WO2019011183A1 - 无线通信方法和无线通信设备 - Google Patents

无线通信方法和无线通信设备 Download PDF

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WO2019011183A1
WO2019011183A1 PCT/CN2018/094751 CN2018094751W WO2019011183A1 WO 2019011183 A1 WO2019011183 A1 WO 2019011183A1 CN 2018094751 W CN2018094751 W CN 2018094751W WO 2019011183 A1 WO2019011183 A1 WO 2019011183A1
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communication
base station
communication device
waveform
waveform parameter
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PCT/CN2018/094751
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English (en)
French (fr)
Inventor
吴亮
徐略均
张在琛
党建
陈晓
郑黎丽
呂本舜
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索尼公司
吴亮
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Application filed by 索尼公司, 吴亮 filed Critical 索尼公司
Priority to CN201880025101.0A priority Critical patent/CN110537336B/zh
Priority to US16/614,381 priority patent/US11088735B2/en
Priority to CN202210345222.1A priority patent/CN114598369A/zh
Priority to EP18831547.7A priority patent/EP3654543A4/en
Priority to AU2018301048A priority patent/AU2018301048A1/en
Publication of WO2019011183A1 publication Critical patent/WO2019011183A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—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
    • H04B7/0619—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 using feedback from receiving side
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    • H—ELECTRICITY
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    • 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
    • H04B7/0619—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 using feedback from receiving side
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    • 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
    • H04B7/0697—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 spatial multiplexing
    • H—ELECTRICITY
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    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/0026—Interference mitigation or co-ordination of multi-user interference
    • H04J11/003—Interference mitigation or co-ordination of multi-user interference at the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
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    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
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    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present invention generally relates to a wireless communication method and a wireless communication device, and more particularly to a method and apparatus for eliminating interference in a mobile communication system.
  • the interference problem has become one of the key issues limiting system throughput.
  • a lot of research has been done on this, mainly to reduce the influence of interference from both the transmitting end and the receiving end.
  • the frequency domain and time domain resources are dynamically allocated.
  • trigger information is transmitted between base stations to control transmit power and other resources.
  • Carrier aggregation is another way, mainly for users at the cell edge, receiving data through the scheduling of cross-carriers.
  • an approximate blank subframe technique is proposed to create a protection subframe for the interfered user by reducing the activity level of the interference source in certain subframes. During the protection subframe, the interference source does not transmit any signal, only the Interfering users are active.
  • interference suppression technology which is a linear filtering process on the received signal to suppress interference
  • maximum likelihood receiving technology this technology
  • Optimal system performance can be obtained, but due to the complexity is too high, it is difficult to achieve in practical systems
  • the successive interference cancellation technology which is a compromise between complexity and performance.
  • Interference alignment technology is a technology that can effectively combat interference in recent years. It divides the signal space into two parts: the desired signal space and the interference signal space.
  • the precoding technique overlaps the interference at the receiving end, thereby compressing the interference signal.
  • the occupied signal capacity eliminates the influence of the interference signal on the desired signal, so as to increase the degree of freedom of the system and effectively improve the system throughput.
  • New waveforms will be used in future mobile communication systems, such as Universal Filtered Multicarrier (UFMC), Filtered Orthogonal Frequency Division Multiplexing (F-OFDM), etc. Interference caused by different sub-bands at different frequency offsets.
  • UFMC Universal Filtered Multicarrier
  • F-OFDM Filtered Orthogonal Frequency Division Multiplexing
  • the interference cancellation techniques described above are based on conventional waveforms without considering the characteristics of new waveforms that may be employed in future mobile communication systems.
  • the interference cancellation scheme for a new waveform for future communication, and more preferably, the interference cancellation scheme can also be compatible with a conventional waveform.
  • the present invention proposes an interference cancellation scheme that addresses one or more of the problems described above.
  • an electronic device for wirelessly communicating with two sets of communication devices including processing circuitry configured to: acquire and communicate with the first group of communication devices Corresponding first waveform parameter, the first waveform parameter being related to formation of a signal waveform for communication of the first group of communication devices; notifying the first group of waveform parameters to the second group of communication devices
  • the second set of communication devices are enabled to determine a precoding matrix for communication of the second set of communication devices based on the first waveform parameter.
  • a second communication device of a first group of communication devices in a communication system comprising the first group of communication devices and a second group of communication devices
  • the second communication device includes processing circuitry configured to determine for use based on a first waveform parameter associated with the first set of communication devices and a second waveform parameter associated with the second set of communication devices a precoding matrix of communications of the first group of communication devices, wherein the first waveform parameter relates to formation of a signal waveform for communication of the first group of communication devices, the second waveform parameter being used for The formation of a signal waveform of the communication of the second group of communication devices is related.
  • a communication method in a communication system comprising a base station, a first group of communication devices consisting of the first communication device and the second communication device, and a third communication device And a second group of communication devices comprising a fourth communication device, the method comprising: reporting, by the first communication device of the first group of communication devices, a waveform parameter to the base station, the waveform parameter and the first communication Relating to the formation of a signal waveform transmitted by the device; reporting, by the second communication device of the first group of communication devices, channel state information estimated by the second communication device to the base station; The waveform parameters and channel state information acquired by the first group of communication devices are notified to the fourth one of the second group of communication devices; and the fourth communication device determines for the second group of communication devices based on the following content a precoding matrix of the third communication device: a waveform parameter of the third communication device, channel state information estimated by the fourth communication device, and a slave Waveform parameters acquired by the base station and the
  • a base station device in a communication system, the base station device comprising processing circuitry, the processing circuit configured to: first based on a first terminal device served by the base station device Determining, by the waveform parameter and a second waveform parameter of the second terminal device served by the neighboring base station, a precoding matrix to be used by the first terminal device, wherein the first waveform parameter is sent by the first terminal device
  • the waveform of the second terminal is related to the formation of a signal waveform transmitted by the second terminal device.
  • a second communication device of a group of communication devices comprising a first communication device and the second communication device in communication with each other, the second communication device comprising Processing circuitry configured to determine, based on the first waveform parameter of the first communication device and a second waveform parameter of a terminal device served by the base station acquired from a base station, to be determined by the first communication a precoding matrix used by the device, wherein the first waveform parameter is related to formation of a signal waveform sent by the first communication device, and the second waveform parameter is related to formation of a signal waveform sent by the terminal device .
  • a communication method in a communication system comprising: acquiring, by a base station, a first waveform parameter of a first terminal device served by the base station; Obtaining, by the base station, a second waveform parameter of the second terminal device served by the neighboring base station; determining, by the base station, the pre-use to be used by the first terminal device, based on the first waveform parameter and the second waveform parameter And an encoding matrix, wherein the first waveform parameter is related to formation of a signal waveform sent by the first terminal device, and the second waveform parameter is related to formation of a signal waveform sent by the second terminal device.
  • a computer storage medium having stored thereon a program, which, when executed, causes a computer to implement the communication method as described above.
  • Figure 1 schematically shows a block diagram of UFMC uplink transmission.
  • Fig. 2 schematically shows a communication scenario in which interference exists according to the first embodiment of the present invention.
  • FIG. 3 shows a signaling interaction diagram of an interference cancellation scheme according to a first embodiment of the present invention.
  • Fig. 4 schematically shows a communication scenario in which interference exists according to a second embodiment of the present invention.
  • FIG. 5 shows a signaling interaction diagram of an interference cancellation scheme according to a second embodiment of the present invention.
  • Fig. 6 is a view schematically showing a communication scenario in which interference exists according to a third embodiment of the present invention.
  • FIG. 7 shows a signaling interaction diagram of an interference cancellation scheme according to a third embodiment of the present invention.
  • FIG. 8 shows a schematic configuration block diagram of a smartphone as one example of a user equipment.
  • FIG. 9 shows a schematic configuration block diagram of an eNB as one example of a base station.
  • Figure 10 shows a block diagram of a schematic configuration of computer hardware.
  • the present invention proposes an interference cancellation scheme suitable for a new waveform (for example, time domain filtering based UFMC, F-OFDM).
  • a new waveform for example, time domain filtering based UFMC, F-OFDM.
  • the following will mainly describe the scheme of the present invention by taking UFMC as an example.
  • the solution of the present invention is also applicable to a conventional multi-carrier waveform, including Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM), Discrete Fourier Transform Spread Spectrum Orthogonal Fourier transform spread OFDM (DFT-S-OFDM) and the like.
  • CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing
  • DFT-S-OFDM Discrete Fourier Transform Spread Spectrum Orthogonal Fourier transform spread OFDM
  • Figure 1 shows a schematic block diagram of a multi-user UFMC uplink transmission.
  • the total N subcarriers are divided into B subbands, each subband occupies N/B subcarriers, and each user can be assigned one or more subbands.
  • the frequency domain signal X i of length N B is transformed into the time domain by an N-point inverse fast Fourier transform (IFFT).
  • IFFT inverse fast Fourier transform
  • the time domain signal passes through a filter of length L, and then the filtered signal is transmitted to the receiving end over the wireless channel.
  • the received signal is first pre-processed in the time domain, for example, by means of continuous phase rotation in the time domain.
  • a zero-fill operation is performed on the received one frame signal for subsequent 2N point fast Fourier transform (FFT), which is used to transform the time domain signal into the frequency domain.
  • FFT 2N point fast Fourier transform
  • Demodulation is performed after the FFT.
  • the transmitting end has a total of N subcarriers, and the receiving end performs a 2N point FFT, according to the corresponding relationship in the frequency domain, the frequency domain signal of the receiving end carries only useful information on even subcarriers. Therefore, in demodulation, information on even subcarriers is used to recover information on the N subcarriers at the transmitting end.
  • FIG. 2 shows a scenario in which interference exists between D2D user equipment groups in a cell coverage area according to the first embodiment of the present invention, where user equipment i1 and user equipment i2 are a group of user equipments performing D2D communication, and user equipment j1 And user equipment j2 is another group of user equipments that perform D2D communication.
  • the two sets of user equipments are located within the coverage of the base station 1 and operate in the same frequency band, so there is interference between them.
  • the communication link between each group of user equipment is shown in solid lines in Figure 2, and the interference links between the two sets of user equipment are shown in dashed lines.
  • the user equipment i1 and the user equipment j1 are transmission devices
  • the user equipment i2 and the user equipment j2 are reception devices.
  • N is the size of the IFFT transform.
  • ⁇ i,j represents the frequency offset between the jth user and the ith user.
  • the received signals of the user equipment i2 and the user equipment j2 shown in FIG. 2 can be expressed as:
  • X i1 and X j1 in the above equation represent frequency domain signals transmitted by user equipment i1 and user equipment j1, respectively.
  • [ ⁇ ] T represents transposition
  • [ ⁇ ] H represents conjugate transposition
  • F m represents the Topplitz matrix of the coefficients of the filter used by the mth user equipment (the filter of length L shown in Figure 1), the size of the matrix Is (N+L FIR -1) ⁇ N, and the first column is [f m (0), f m (1), ..., f m (L FIR -1), 0,...,0 ] T
  • L FIR represents the length of the filter
  • H m,n is the Topplitz matrix formed by the channel coefficients from the nth user equipment to the mth user equipment, the size of the matrix is (N+L FIR + L ch -2) ⁇ (N + L FIR -1), and the first column is [h m,n (0), h m,n (1),...,h m,n (L ch -1 ), 0,...,0] T
  • L ch represents
  • the channel matrix is defined. They are all 2N 1 ⁇ N 1 matrices.
  • Channel matrix The transmission channel characteristics of the user equipment i1 to the user equipment i2, the user equipment j1 to the user equipment i2, the user equipment i1 to the user equipment j2, and the user equipment j1 to the user equipment j2 are respectively reflected.
  • the filter coefficient matrix F in the equations (3) and (4) represents a waveform parameter related to the formation of a signal waveform.
  • the waveform parameters discussed in the present invention are not limited to the matrix F described above, and in other systems (e.g., F-OFDM), the waveform parameters may appear in different forms.
  • (1:2:2N 1 ,:) indicates that the matrix is taken out at intervals N1 line.
  • the present invention proposes a precoding based interference cancellation method.
  • P i1 and P j1 represent the frequency domain precoding matrices used by user equipment i1 and user equipment j1 , respectively.
  • the vector space G i2,i1 P i1 should be orthogonal to the vector space G i2,j1 P j1 such that for user equipment i2, the signal from the user equipment i1 (useful signal) will be with the signal from the user equipment j1 (Interference signal) is orthogonal.
  • the vector space P i1 is orthogonal to the vector space (G i2, i1 ) H G i2, j1 P j1 , where ( ⁇ ) H represents the conjugate transpose.
  • the vector space G j2,i1 P i1 should be orthogonal to the vector space G j2,j1 P j1 such that for the user equipment j2, the signal (interference signal) from the user equipment i1 will be with the signal from the user equipment j1. (useful signal) orthogonal.
  • the vector space P j1 and the vector space (G j2, i1 ) H G j2, j1 P j1 are orthogonal.
  • the defined G j1, orth is a matrix of N 1 ⁇ N 1 .
  • the frequency domain precoding matrix P j1 of the user equipment j1 is composed of N 1 /2 feature vectors of the matrix G j1, orth .
  • the precoding matrix P i1 of the user equipment i1 can be obtained in a similar manner.
  • the signals transmitted by the user equipment i1 and the user equipment j1 can be expressed as:
  • S i1 and S j1 are frequency domain information vectors of user equipment i1 and user equipment j1.
  • waveform parameters for example, filter coefficient matrix F
  • the transmitting end performs precoding using such a precoding matrix, so that the interference signal and the useful signal are in a space orthogonal to each other, thereby realizing the effect of interference cancellation.
  • FIG. 3 shows a signaling interaction diagram of a scheme for eliminating interference between two sets of user equipment in the scenario shown in FIG. 2.
  • the user equipment i1, j1 is a transmitting device
  • the user equipments i2, j2 are receiving devices.
  • step S300 the user equipments i1, i2 and the user equipments j1, j2 transmit a D2D communication request to the base station, and simultaneously report their own location information to the base station.
  • the base station indicates to the two sets of user equipments that the D2D communication request is agreed in step S310, and allocates spectrum resources to the respective user equipments in step S320. For example, the base station may allocate the same spectrum resource to two sets of user equipments for the purpose of saving spectrum resources or when the spectrum resources are limited. In this case, the base station indicates that the two sets of user equipments will perform interference cancellation.
  • the user equipment i1 and the user equipment j1 report their own waveform parameters to the base station in step S330.
  • the waveform parameters determine the formation of signal waveforms transmitted by user equipment i1, j1 and may, for example, include one or more of the following: multi-carrier filter type, filter length, filter out-of-band attenuation, FFT ⁇ IFFT transformation Length, carrier spacing, number of data streams transmitted in parallel, length of discrete Fourier transform (DFT) extension, and so on.
  • step S340 the user equipment i1 transmits a training sequence for the user equipment i2 and the user equipment j2 to estimate the state of the channel from the user equipment i1.
  • user equipment j1 sends a training sequence for user equipment i2 and user equipment j2 to estimate the channel from user j1.
  • the user equipment i2 estimates the status information of the channels from the user equipments i1 and j1 based on the received training sequences from the user equipments i1 and j1, and reports the estimated channel state information to the base station.
  • the user equipment j2 estimates the state information of the channels from the user equipments i1 and j1 based on the received training sequence, and reports the estimated channel state information to the base station, as shown in step S350.
  • the base station notifies information about one user equipment group to another group of user equipments in step S360. Specifically, the base station sends the waveform parameter of the user equipment i1 and the channel state information estimated by the user equipment i2 to the user equipment j2, and sends the waveform parameter of the user equipment j1 and the channel state information estimated by the user j2 to the user equipment i2. .
  • the user equipment j2 as the receiving device can obtain the waveform parameters of the other group of transmitting devices i1 and the channel state information estimated by the receiving device i2 from the base station, that is, the equations (3) and (4) are obtained.
  • the matrix F i1 and the matrices H i2, i1 and H i2, j1 are obtained.
  • the user equipment j2 can obtain the matrices H j2, i1 and H j2, j1 in the equations (3) and (4) by channel estimation performed by itself.
  • the user equipment j2 may previously receive waveform parameters (not shown) of the transmitting device j1 from the transmitting device j1 of the same group, that is, the filter matrix F j1 in the equations (3) and (4). It should be noted that the user equipment j2 can acquire its waveform parameters from the user equipment j1 at any time after establishing communication with the user equipment j1. Alternatively, the user equipment j2 may also obtain the waveform parameters of the user equipment j1 from the base station.
  • the user equipment j2 can determine the channel matrix according to equations (3) and (4). Further, the equivalent channel matrix is determined according to the equation (5), and the precoding matrix P j1 for the transmission device j1 of the same group is calculated according to the equation (6), as shown in step S370. In the same manner, the user equipment i2 as the receiving device can also calculate the precoding matrix P i1 of the transmitting device i1 of the same group based on the information received from the base station and the channel estimation result performed by itself.
  • step S380 the user equipment i2 and the user equipment j2 respectively feed back the calculated frequency domain precoding matrix to the user equipment i1 and the user equipment j1 of the corresponding transmitting end.
  • user equipment i2 and user equipment j2 may send precoding matrix indices to user equipment i1 and user equipment j1, respectively.
  • the user equipment i1 and the user equipment j1 transmit signals using the received precoding matrix, as shown in step S390.
  • FIG. 4 shows a scenario in which inter-cell interference and D2D user equipment interference exist simultaneously according to the second embodiment of the present invention.
  • the edge regions which use the same time and frequency resources, therefore have interference with each other, that is, inter-cell interference.
  • the user equipment i1 and the user equipment i2 are a group of user equipments performing D2D communication inside the cell 1, and they use the same time and frequency resources as the user equipment j, so the user equipment i1 and the user equipment i2 are subject to the from the cell during the communication process.
  • the user equipment i1 is a transmitting device and the user device i2 is a receiving device.
  • each resource block has Subcarriers. Therefore, in the frequency domain, the received signal of the base station 1 can be expressed as:
  • the received signal of base station 2 can be expressed as:
  • the received signal of user equipment i2 can be expressed as:
  • ⁇ m, (n, k) represents the frequency offset between the user equipment k and the base station m in the cell n
  • ⁇ 1 (2, j) represents the user equipment j in the cell 2 and the base station 1 Frequency offset
  • ⁇ (m, p), (n, k) represents the frequency offset between user equipment k in cell n and user equipment p in cell m, eg ⁇ (1, i2), (1, j ) indicates the frequency offset between the user equipment j in the cell 1 and the user equipment i2 in the cell 1.
  • the frequency domain signal transmitted by the user equipment n for example, X (1, j) represents the frequency domain signal transmitted by the user equipment j in the cell 1.
  • F (m, n) represents a Toplice matrix composed of filter coefficients used by the user equipment n in the cell m, for example, F (1, j) represents a filter coefficient matrix used by the user equipment j in the cell 1.
  • the matrix F represents waveform parameters related to the formation of a signal waveform, but the waveform parameters in the present invention are not limited thereto.
  • the size of the matrix F (m,n) is (N+L FIR -1) ⁇ N, and the first column is [f (m,n) (0),f (m,n) (1),... , f (m,n) (L FIR -1), 0,...,0] T , where L FIR represents the length of the filter.
  • H m,(n,k) is a Toplice matrix composed of channel coefficients from the user equipment k of the cell n to the base station m, for example, H 1, (2, j) represents the user equipment j in the cell 2 to the base station a channel coefficient matrix of 1 whose size is (N+L FIR + L ch -2) ⁇ (N + L FIR -1), and the first column is [h m, (n, k) (0), h m,(n,k) (1),...,h m,(n,k) (L ch -1),0,...,0] T , where L ch denotes the length of the channel.
  • H (m, p), (n, k) is a Toplice matrix composed of channel coefficients from user equipment k of cell n to user equipment p of cell m, for example, H (1, i2), (1, j) represents a channel coefficient matrix from the user equipment j of the cell 1 to the user equipment i2 of the cell 1, the size of the matrix being (N+L FIR + L ch -2) ⁇ (N + L FIR - 1), and One column is [h (m,p),(n,k) (0),h (m,p),(n,k) (1),...,h (m,p),(n,k) (L ch -1), 0,...,0] T .
  • I a zero-fill matrix
  • I an identity matrix with rank N+L FIR + L ch -2.
  • D 1 , D 2 and D 3 are noise components.
  • symbol Representation definition that is, define the longer expression in equations (9)-(11) as the channel matrix
  • the size of these channel matrices is 2N 1 ⁇ N 1 .
  • the present invention proposes a pre-coding based interference cancellation method.
  • P (1,j) , P (1,i1) and P (2,j) represent the frequency domain precoding matrix of the user equipment j of the cell 1, the user equipment i1 of the cell 1 and the user equipment j of the cell 2, respectively.
  • the vector space G 1,(2,j) P (2,j) should be orthogonal to the vector space G 1,(1,j) P (1,j) such that for the base station 1, from the cell 2
  • the signal (interference signal) of the user equipment j in the middle is orthogonal to the signal (useful signal) from the user equipment j in the cell 1. Therefore, it can be concluded that the vector space P (1, j) and the vector space (G 1, (1, j) ) H G 1, (2, j) P (2, j) are orthogonal, where ( ⁇ ) H represents a total The yoke is transposed.
  • the vector space G 2,(1,j) P (1,j) should be orthogonal to the vector space G 2,(2,j) P (2,j) such that for the base station 2, from the cell 1
  • the signal (interference signal) of the user equipment j in the orthogonality is orthogonal to the signal (useful signal) from the user equipment j in the cell 2. Therefore, it can be concluded that the vector space P (1, j) and the vector space (G 2, (1, j) ) H G 2, (2, j) P (2, j) are orthogonal.
  • the defined G (2, j), orth is a matrix of N 1 ⁇ N 1 .
  • the frequency domain precoding matrix P (2, j) of the user equipment j of the cell 2 is composed of the matrix G (2, j),
  • the N 1 / 2 feature vectors of orth are constructed.
  • the precoding matrix P (1,j) of the user equipment j of the cell 1 can be calculated in a similar manner.
  • the vector space G (1, i2), (1, j) P (1, j) and the vector space G (1, I2), (1, i1) P (1, i1) are orthogonal such that for the user equipment i2, the signal from the user equipment j in the cell 1 (interference signal) and the signal from the transmitting device i1 of the D2D communication (useful signal) orthogonal. From this, the vector space P (1, i1) and the vector space can be obtained. Orthogonal, that is, the precoding matrix P (1, i1) of the user equipment i1 of the cell 1 corresponds to The zero space can be expressed as follows:
  • S is the frequency domain information vector of the user equipment.
  • FIG. 5 shows a signaling interaction diagram of a scheme for eliminating inter-cell interference and D2D user equipment interference in the scenario shown in FIG.
  • user equipment i1 is a transmitting device
  • user equipment i2 is a receiving device.
  • step S501 the user equipment i1, i2 transmits a D2D communication request to the base station 1.
  • the base station 1 instructs the user equipment i1, i2 to agree to the D2D communication request in step S502.
  • step S503 the user equipments i1, i2 and the user equipment j of the cell 1 report their own location information to the base station 1, and the user equipment j of the cell 2 reports its location information to the base station 2. It should be noted that the manner of reporting location information is not limited to the one shown in the figure.
  • the user equipment i1, i2 may report the location information while transmitting the D2D communication request, and the user equipment j in the two cells may also report to the base station 1 or the base station 2 before the user equipment i1, i2 sends the D2D communication request. Its own location information.
  • the base station 1 and the base station 2 can respectively allocate spectrum resources to the user equipments managed by them, and instruct the user equipments to perform interference cancellation, as shown in step S504.
  • step S505 in response to the indication from the base station, the user equipment j in the cell 1 reports its own waveform parameters to the base station 1, and the user equipment j in the cell 2 reports the waveform parameters to the base station 2, as the user equipment i1 of the transmitting end of the D2D communication
  • the receiving device i2 reports its own waveform parameters.
  • step S506 the user equipment j in the cell 1 transmits a training sequence for the base station 1, the base station 2, and the user equipment i2 to estimate the state of the channel of the user j from the cell 1. Furthermore, the user equipment j in the cell 2 transmits a training sequence for the base station 1 and the base station 2 to estimate the state of the channel of the user j from the cell 2. Furthermore, the user equipment i1 in the cell 1 also transmits a training sequence for the user equipment i2 to estimate the state of the channel from the user equipment i1.
  • step S507 the base station 1, the base station 2, and the user equipment i2 perform channel estimation based on the received training sequence. Specifically, each of the base station 1 and the base station 2 estimates state information of a channel from the user j of the cell 1 and a channel of the user j from the cell 2, and the user equipment i2 estimates the channel from the user equipment i1 and the cell from the cell 1 Status information of the channel of the user equipment j.
  • the base station 1 and the base station 2 exchange the respective estimated channel state information with each other in step S508, and exchange waveform information of the respective managed user equipment j. Specifically, the base station 1 notifies the base station 2 of the waveform information reported by the user equipment j in the cell 1, and the base station 2 notifies the base station 1 of the waveform information reported by the user equipment j in the cell 2.
  • the base station 1 and the base station 2 obtain the matrix F and the matrix H in the equations (9) and (10), and thus the channel matrix can be determined according to the equations (9) and (10). Further determining an equivalent channel matrix G 1, (1, j) , G 1, (2, j) , G 2, (1, j) , G 2, (2, j) according to equation (12 ) , and according to Equation (13) obtains precoding matrices P (1, j) and P (2, j) for user equipment j in cell 1 and user equipment j in cell 2, as shown in step S509.
  • step S510 the base station 1 transmits the obtained precoding matrix P (1,j) for the user equipment j in the cell 1 to the user equipment j in the cell 1, and simultaneously transmits the precoding matrix to the cell.
  • the base station 2 transmits the obtained precoding matrix P (2,j) for the user equipment j in the cell 2 to the user equipment j in the cell 2.
  • base station 1 and base station 2 may only transmit precoding matrix indices.
  • user equipment j in cell 1 and user equipment j in cell 2 can transmit signals (not shown) using the received precoding matrix.
  • the base station 1 further transmits the waveform parameter of the user equipment j in the cell 1 to the user equipment i2 in the cell 1.
  • the base station 1 is not limited to notifying the user equipment i2 of the waveform parameter of the user equipment j at this time, but may also receive the user equipment in the cell 1 before this step.
  • the waveform parameter is notified to the user equipment i2 at any time after the reported waveform parameter.
  • the user equipment i2 in the cell 1 obtains the matrix F and the matrix H in the equation (11), and thus can determine the channel matrix according to the equation (11). Further, the equivalent channel matrix G (1, i2), (1, j) , G (1, i2), (1, i1) is determined according to the equation (12 ) . Since the base station 1 also notifies the user equipment i2 of the precoding matrix P (1,j) determined for the user equipment j in the cell 1 in step S510, the user equipment i2 can obtain the user equipment i1 according to the equation (14).
  • the precoding matrix P (1, i1) is as shown in step S512.
  • the user equipment i2 feeds back the obtained precoding matrix P (1, i1) to the user equipment i1 in step S513.
  • the user equipment i1 can transmit a signal (not shown ) to the user equipment i2 using the received precoding matrix P (1, i1 ).
  • FIG. 6 shows a scenario in which interference exists between D2D communication user groups outside the coverage of the base station according to the third embodiment of the present invention.
  • user equipment i1 and user equipment i2 are a group of user equipments performing D2D communication
  • user equipment j1 and user equipment j2 are another group of user equipments performing D2D communication
  • the frequency bands are therefore interfering with each other.
  • interference exists between two sets of user equipments performing D2D communication, and thus can be based on the equations (1)-(6) in the manner described in the first embodiment.
  • the transmitting device (user equipment i1, j1) in each group of user equipment determines a frequency domain precoding matrix.
  • the difference between this embodiment and the first embodiment is that two sets of user equipments are located outside the coverage of the base station, and there is no base station in the communication scenario, so the signaling interaction procedure is different from the first embodiment.
  • Figure 7 shows a signaling interaction diagram of a scheme for eliminating interference between two sets of user equipment in the scenario shown in Figure 6.
  • step S700 the user equipment i1 transmits a D2D communication request to the user equipment i2, and the user equipment j1 transmits a D2D communication request to the user equipment j2.
  • step S710 the user equipment i2 and the user equipment j2 agree to the D2D communication request, and allocate spectrum resources to the user equipment i1 and the user equipment j1, respectively.
  • the user equipment i2 and the user equipment j2 notify each other of the allocated spectrum resources, as shown in step S720.
  • the spectrum resources allocated by the user equipment i2 and the user equipment j2 are the same, there is interference between the two sets of user equipments at this time, and therefore the user equipment i2 and the user equipment j2 instruct the user equipment i1 and the user equipment j1 to perform interference cancellation.
  • the user equipment i1 and the user equipment j1 respectively transmit their own waveform parameters to the user equipment i2 and the user equipment j2 in step S730.
  • step S740 the user equipment i1 transmits a training sequence for the user equipment i2 and the user equipment j2 to estimate the state of the channel from the user equipment i1.
  • user equipment j1 sends a training sequence for user equipment i2 and user equipment j2 to estimate the channel from user j1.
  • the user equipment i2 estimates the status information of the channels from the user equipments i1 and j1 based on the received training sequences from the user equipments i1 and j1.
  • the user equipment j2 estimates the status information of the channels from the user equipments i1 and j1 based on the received training sequence, as shown in step S750.
  • the user equipment i2 and the user equipment j2 mutually exchange the received waveform parameters and the respective estimated channel state information in step S760. Specifically, the user equipment i2 transmits the waveform parameter of the user equipment i1 and the channel state information estimated by the user equipment i2 to the user equipment j2, and the user equipment j2 sets the waveform parameter of the user equipment j1 and the channel state information estimated by the user equipment j2. Send to user device i2.
  • the user equipment i2 and the user equipment j2 as receiving devices obtain the matrix F and the matrix H in the equations (3) and (4), whereby the channel matrix H can be determined, and the equivalent is determined according to the equation (5).
  • the channel matrix G, and the precoding matrices P i1 and P j1 for the transmitting devices i1, j1 are calculated according to equation (6), as shown in step S770.
  • step S780 the user equipment i2 and the user equipment j2 respectively transmit the calculated frequency domain precoding matrix to the user equipment i1 and the user equipment j1.
  • user equipment i2 and user equipment j2 may transmit a precoding matrix index.
  • the user equipment i1 and the user equipment j1 use the precoding matrix to transmit a signal in step S790.
  • the interference cancellation scheme of the present invention has been described above with respect to a new waveform based on time domain filtering (e.g., UFMC) in conjunction with Figures 2 through 7, however, the present invention is equally applicable to conventional waveforms.
  • the waveform parameters will not be considered.
  • the above filter coefficient matrix F can be replaced with a cyclic prefix matrix, and the cyclic prefix matrix can be expressed as:
  • I N represents an identity matrix with rank N
  • N cp represents the length of the cyclic prefix
  • the solution of the present invention can be applied to interference cancellation in a communication scenario in which a new waveform and a conventional waveform coexist, and has good backward compatibility.
  • the present invention is also applicable to hybrid single carrier technology as well as multi-carrier technology.
  • D2D user equipment inter-group interference cancellation in the first embodiment it is assumed that the user equipments i1 and i2 adopt UFMC, and the user equipments j1 and j2 adopt DFT-S-OFDM.
  • the received signals of user equipment i2 and user equipment j2 can be expressed as:
  • T j1 represents a cyclic prefix matrix, where the length of the cyclic prefix is set to L FIR -1.
  • X i1 P i1 W(N 1 )s i1 , s i1 represents time domain information of the user i1;
  • X j1 P j1 W(N 1 )s j1 , s j1 represents time domain information of the user j1.
  • the precoding matrices P i1 and P j1 can be determined according to the method in the first embodiment.
  • the interference cancellation scheme proposed by the present invention has been described above in connection with various embodiments.
  • the scheme considers the characteristics of a new waveform for future mobile communication in determining the precoding matrix, and thus the useful signal space and interference can be utilized by using the precoding matrix.
  • the signal spaces are orthogonal to each other for better interference cancellation.
  • the solution of the present invention can also effectively reduce interference caused by frequency offsets of different users.
  • the solution of the present invention can also be applied to a conventional waveform, and thus has good backward compatibility.
  • the base station in the above embodiments may include any type of evolved Node B (eNB), such as a macro eNB and a small eNB.
  • the small eNB may be an eNB covering a cell smaller than the macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB.
  • the network side device or base station may also include any other type of base station, such as a NodeB and a base transceiver station (BTS).
  • BTS base transceiver station
  • the base station can include: a body (also referred to as a base station device) configured to control wireless communication; and one or more remote wireless headends (RRHs) disposed at a different location than the body.
  • a body also referred to as a base station device
  • RRHs remote wireless headends
  • various types of terminal devices can also operate as base stations by performing base station functions temporarily or semi-persistently.
  • the user equipment in the above embodiment can be implemented, for example, as a communication terminal device (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/encrypted dog type mobile router, and a digital camera device).
  • a communication terminal device such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/encrypted dog type mobile router, and a digital camera device.
  • an in-vehicle terminal device such as a car navigation device
  • M2M machine-to-machine
  • MTC machine type communication
  • the terminal device or user device may also be a wireless communication module (such as an integrated circuit module including a single wafer) installed on each of the above terminals.
  • terminal device or user device will be described below with reference to FIG. 8 using a smart phone as an example.
  • Fig. 8 shows a block diagram of a schematic configuration of a smartphone.
  • the smart phone 2500 includes a processor 2501, a memory 2502, a storage device 2503, an external connection interface 2504, an imaging device 2506, a sensor 2507, a microphone 2508, an input device 2509, a display device 2510, a speaker 2511, and a wireless communication interface. 2512, one or more antenna switches 2515, one or more antennas 2516, a bus 2517, a battery 2518, and an auxiliary controller 2519.
  • the processor 2501 may be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and the other layers of the smartphone 2500.
  • the memory 2502 includes a RAM and a ROM, and stores data and programs executed by the processor 2501.
  • the storage device 2503 may include a storage medium such as a semiconductor memory and a hard disk.
  • the external connection interface 2504 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smartphone 2500.
  • USB universal serial bus
  • the image pickup device 2506 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image.
  • Sensor 2507 can include a set of sensors, such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor.
  • the microphone 2508 converts the sound input to the smartphone 2500 into an audio signal.
  • the input device 2509 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 2510, and receives an operation or information input from a user.
  • the display device 2510 includes screens such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smartphone 2500.
  • the speaker 2511 converts the audio signal output from the smartphone 2500 into a sound.
  • the wireless communication interface 2512 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication.
  • Wireless communication interface 2512 may generally include, for example, a baseband (BB) processor 2513 and radio frequency (RF) circuitry 2514.
  • the BB processor 2513 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing for wireless communication.
  • the RF circuit 2514 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 2516.
  • the wireless communication interface 2512 may be a chip module on which the BB processor 2513 and the RF circuit 2514 are integrated. As shown in FIG. 8, the wireless communication interface 2512 can include a plurality of BB processors 2513 and a plurality of RF circuits 2514. However, the wireless communication interface 2512 can also include a single BB processor 2513 or a single RF circuit
  • the wireless communication interface 2512 can also support additional types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes.
  • the wireless communication interface 2512 can include a BB processor 2513 and RF circuitry 2514 for each wireless communication scheme.
  • Each of the antenna switches 2515 switches the connection destination of the antenna 2516 between a plurality of circuits included in the wireless communication interface 2512, such as circuits for different wireless communication schemes.
  • Each of the antennas 2516 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the wireless communication interface 2512 to transmit and receive wireless signals.
  • smart phone 2500 can include multiple antennas 2516.
  • smart phone 2500 can also include a single antenna 2516.
  • smart phone 2500 can include an antenna 2516 for each wireless communication scheme.
  • the antenna switch 2515 can be omitted from the configuration of the smartphone 2500.
  • the bus 2517 has a processor 2501, a memory 2502, a storage device 2503, an external connection interface 2504, an imaging device 2506, a sensor 2507, a microphone 2508, an input device 2509, a display device 2510, a speaker 2511, a wireless communication interface 2512, and an auxiliary controller 2519. connection.
  • Battery 2518 provides power to various components of smart phone 2500 via feeders, which are shown partially as dashed lines in the figure.
  • the secondary controller 2519 operates the minimum required function of the smartphone 2500, for example, in a sleep mode.
  • the transceiver of the terminal device can be implemented by the wireless communication interface 2512. At least a portion of the functions of the functional units of the terminal device may also be implemented by the processor 2501 or the auxiliary controller 2519. For example, the power consumption of the battery 2518 can be reduced by performing a portion of the functions of the processor 2501 by the auxiliary controller 2519. Further, the processor 2501 or the auxiliary controller 2519 can perform at least a part of the functions of the respective functional units of the terminal device by executing the program stored in the memory 2502 or the storage device 2503.
  • the implementation of the base station will be described below with reference to FIG. 9 with the eNB as an example.
  • FIG. 9 shows a block diagram of a schematic configuration of an eNB.
  • the eNB 2300 includes one or more antennas 2310 and base station devices 2320.
  • the base station device 2320 and each antenna 2310 may be connected to each other via a radio frequency (RF) cable.
  • RF radio frequency
  • Each of the antennas 2310 includes a single or multiple antenna elements, such as multiple antenna elements included in a multiple input multiple output (MIMO) antenna, and is used by the base station device 2320 to transmit and receive wireless signals.
  • the eNB 2300 may include a plurality of antennas 2310.
  • multiple antennas 2310 can be compatible with multiple frequency bands used by eNB 2300.
  • FIG. 9 illustrates an example in which the eNB 2300 includes a plurality of antennas 2310, the eNB 2300 may also include a single antenna 2310.
  • the base station device 2320 includes a controller 2321, a memory 2322, a network interface 2323, and a wireless communication interface 2325.
  • the controller 2321 can be, for example, a CPU or a DSP, and operates various functions of higher layers of the base station device 2320. For example, controller 2321 generates data packets based on data in signals processed by wireless communication interface 2325 and delivers the generated packets via network interface 2323. The controller 2321 can bundle data from a plurality of baseband processors to generate bundled packets and deliver the generated bundled packets. The controller 2321 may have a logical function that performs control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby eNBs or core network nodes.
  • the memory 2322 includes a RAM and a ROM, and stores programs executed by the controller 2321 and various types of control data such as a terminal list, transmission power data, and scheduling data.
  • the network interface 2323 is a communication interface for connecting the base station device 2320 to the core network 2324. Controller 2321 can communicate with a core network node or another eNB via network interface 2323. In this case, the eNB 2300 and the core network node or other eNBs may be connected to each other through a logical interface such as an S1 interface and an X2 interface.
  • the network interface 2323 can also be a wired communication interface or a wireless communication interface for wireless backhaul lines. If the network interface 2323 is a wireless communication interface, the network interface 2323 can use a higher frequency band for wireless communication than the frequency band used by the wireless communication interface 2325.
  • the wireless communication interface 2325 supports any cellular communication schemes, such as Long Term Evolution (LTE) and LTE-Advanced, and provides wireless connectivity to terminals located in cells of the eNB 2300 via the antenna 2310.
  • Wireless communication interface 2325 can typically include, for example, BB processor 2326 and RF circuitry 2327.
  • the BB processor 2326 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs layers (eg, L1, Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP)) Various types of signal processing.
  • BB processor 2326 may have some or all of the above described logic functions.
  • the BB processor 2326 can be a memory that stores a communication control program, or a module that includes a processor and associated circuitry configured to execute the program.
  • the update program can cause the functionality of the BB processor 2326 to change.
  • the module can be a card or blade that is inserted into the slot of the base station device 2320. Alternatively, the module can also be a chip mounted on a card or blade.
  • the RF circuit 2327 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 2310.
  • the wireless communication interface 2325 can include a plurality of BB processors 2326.
  • multiple BB processors 2326 can be compatible with multiple frequency bands used by eNB 2300.
  • the wireless communication interface 2325 can include a plurality of RF circuits 2327.
  • multiple RF circuits 2327 can be compatible with multiple antenna elements.
  • FIG. 9 illustrates an example in which the wireless communication interface 2325 includes a plurality of BB processors 2326 and a plurality of RF circuits 2327, the wireless communication interface 2325 may also include a single BB processor 2326 or a single RF circuit 2327.
  • the transceiver of the base station side device can be implemented by the wireless communication interface 2325. At least a portion of the functionality of each unit may also be performed by controller 2321.
  • the controller 2321 can perform at least a portion of the functions of the units by executing a program stored in the memory 2322.
  • the series of processes performed by each device or component in the above embodiments may be implemented by software, hardware, or a combination of software and hardware.
  • the program included in the software may be stored in advance in, for example, a storage medium provided inside or outside each device or component.
  • these programs are written to a random access memory (RAM) and executed by a processor (e.g., a CPU) to perform the various processes described in the above embodiments.
  • RAM random access memory
  • FIG. 10 is a block diagram showing an example configuration of computer hardware that executes the scheme of the present invention in accordance with a program.
  • a central processing unit (CPU) 1001 a read only memory (ROM) 1002, and a random access memory (RAM) 1003 are connected to one another via a bus 1004.
  • CPU central processing unit
  • ROM read only memory
  • RAM random access memory
  • the input/output interface 1005 is further connected to the bus 1004.
  • the input/output interface 1005 is connected to an input unit 1006 formed of a keyboard, a mouse, a microphone, or the like; an output unit 1007 formed of a display, a speaker, or the like; a storage unit 1008 formed of a hard disk, a nonvolatile memory, or the like;
  • a communication unit 1009 formed of a network interface card (such as a local area network (LAN) card, a modem, etc.); and a drive 1010 that drives the removable medium 1011 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
  • LAN local area network
  • the CPU 1001 loads the program stored in the storage unit 1008 into the RAM 1003 via the input/output interface 1005 and the bus 1004, and executes the program to execute the above processing.
  • a program to be executed by a computer (CPU 1001) may be recorded on a removable medium 1011 as a package medium, such as a magnetic disk (including a floppy disk), an optical disk (including a compact disk-read only memory (CD-ROM)), A digital versatile disc (DVD) or the like, a magneto-optical disc, or a semiconductor memory is formed. Further, a program to be executed by a computer (CPU 1001) can also be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.
  • a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.
  • the program can be installed in the storage unit 1008 via the input/output interface 1005.
  • the program can be received by the communication unit 1009 via a wired or wireless transmission medium, and the program is installed in the storage unit 1008.
  • the program may be pre-installed in the ROM 1002 or the storage unit 1008.
  • the program to be executed by the computer may be a program that performs processing in accordance with the order described in this specification, or may be a program that executes processing in parallel or performs processing when needed, such as when called.
  • the present invention can also be configured as follows.
  • An electronic device for wirelessly communicating with two sets of communication devices including processing circuitry configured to: acquire first waveform parameters associated with the first set of communication devices, A first waveform parameter is associated with formation of a signal waveform for communication of the first set of communication devices; notifying the first set of communication parameters to the second set of communication devices to enable the second set of communication devices to A precoding matrix for communication of the second group of communication devices is determined based on the first waveform parameter.
  • the first group of communication devices of the two sets of communication devices includes a first communication device and a second communication device
  • the second group of communication devices includes a third communication device and a fourth communication device
  • the processing circuit is further configured to Acquiring the first waveform parameter related to formation of a signal waveform transmitted by the first communication device; notifying the fourth communication device to the fourth communication device to enable the fourth communication device
  • a precoding matrix to be used by the third communication device is determined based on the first waveform parameter.
  • the processing circuit is further configured to: acquire channel state information estimated by the second communication device; notify the fourth communication device of the acquired channel state information, so that the fourth communication device can be based on
  • the channel state information is used to determine a precoding matrix to be used by the third communication device.
  • the channel state information estimated by the second communications device includes: channel state information of a channel between the first communications device and the second communications device, and the third communications device and the second Channel state information for the channel between communication devices.
  • the precoding matrix is configured to precode a signal to be sent by the third communications device for interference cancellation.
  • the processing circuit is further configured to: acquire a second waveform parameter related to the second set of communication devices, the second waveform parameter being related to formation of a signal waveform for communication of the second group of communication devices; Notifying the first set of communication devices of the second set of waveform parameters to enable the first set of communication devices to determine precoding for communication of the first set of communication devices based on the second waveform parameter matrix.
  • the processing circuit is further configured to: allocate the same communication resource to the two sets of communication devices; and instruct the two sets of communication devices to report the first waveform parameter and the second waveform parameter, respectively.
  • the first waveform parameter includes one or more of the following: multi-carrier filter type, filter length, filter out-of-band attenuation, fast Fourier transform, fast inverse Fourier transform (FFT ⁇ IFFT) Transform length, carrier spacing, number of data streams transmitted in parallel, length of discrete Fourier transform (DFT) extension.
  • the signal waveform comprises one or more of the following: a generalized filtered multi-carrier (UFMC), a cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) with weighted splicing addition (WOLA), flexible Cyclic prefix-orthogonal frequency division multiplexing (FCP-OFDM), filtering-orthogonal frequency division multiplexing (F-OFDM), cyclic prefix-orthogonal frequency division multiplexing, discrete Fourier transform spread spectrum orthogonal frequency division Multiplexing (DFT-S-OFDM).
  • UFMC generalized filtered multi-carrier
  • CP-OFDM cyclic prefix-orthogonal frequency division multiplexing
  • WOLA weighted splicing addition
  • FCP-OFDM flexible Cyclic prefix-orthogonal frequency division multiplexing
  • F-OFDM filtering-orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform
  • a second communication device of a first group of communication devices in a communication system comprising the first group of communication devices and a second group of communication devices
  • the second communication device comprising a processing circuit
  • the circuitry is configured to determine communications for the first set of communication devices based on first waveform parameters associated with the first set of communication devices and second waveform parameters associated with the second set of communication devices a precoding matrix, wherein the first waveform parameter relates to formation of a signal waveform for communication of the first set of communication devices, the second waveform parameter being in communication with the second set of communication devices Related to the formation of signal waveforms.
  • the first group of communication devices includes a first communication device and the second communication device
  • the second group of communication devices includes a third communication device and a fourth communication device
  • the processing circuit is further configured to: Determining the first waveform parameter related to the formation of the signal waveform transmitted by the first communication device and the second waveform parameter related to the formation of the signal waveform transmitted by the third communication device A precoding matrix used by the first communication device.
  • the processing circuit is further configured to: estimate channel state information of a channel between the first communication device and the second communication device, and estimate between the third communication device and the second communication device Channel state information for the channel.
  • the processing circuit is further configured to: determine, by the first communication, based on channel state information estimated by the processing circuit and channel state information estimated by a fourth one of the second group of communication devices The precoding matrix used by the device.
  • the processing circuit is further configured to generate a precoding matrix index for transmission to the first communication device based on the determined precoding matrix.
  • a communication method in a communication system comprising a base station, a first group of communication devices consisting of the first communication device and the second communication device, and a second group consisting of the third communication device and the fourth communication device a communication device, the method comprising: reporting, by the first communication device of the first group of communication devices, a waveform parameter to the base station, the waveform parameter being related to formation of a signal waveform sent by the first communication device; Reporting, by the second communication device of the first group of communication devices, channel state information estimated by the second communication device to the base station; waveform parameters acquired by the base station from the first group of communication devices and Channel state information is notified to a fourth one of the second group of communication devices; determining, by the fourth communication device, a precoding matrix for a third one of the second group of communication devices based on : a waveform parameter of the third communication device, channel state information estimated by the fourth communication device, and the first group of communication devices acquired from the base station Waveform parameters and channel status information.
  • a base station device in a communication system comprising processing circuitry, the processing circuit configured to: based on a first waveform parameter of a first terminal device served by the base station device and a service served by a neighboring base station Determining, by the second waveform parameter of the second terminal device, a precoding matrix to be used by the first terminal device, wherein the first waveform parameter is related to formation of a signal waveform sent by the first terminal device, The two waveform parameters are related to the formation of a signal waveform transmitted by the second terminal device.
  • the processing circuit is further configured to: estimate channel state information; determine a precoding matrix to be used by the first terminal device based on the estimated channel state information and channel state information estimated by the neighboring base station.
  • the channel state information estimated by the processing circuit includes channel state information of a channel between the first terminal device and the base station device, and a channel between the second terminal device and the base station device. Channel status information.
  • the processing circuit is further configured to: generate a precoding matrix index to be sent to the first terminal device based on the determined precoding matrix, wherein the precoding matrix is to be used for the first terminal device to be sent
  • the signal is precoded for interference cancellation.
  • the processing circuit is further configured to: notify the first waveform parameter of the first terminal device to a second one of a group of communication devices managed by the base station device, such that the second communication
  • the device can determine a precoding matrix to be used by the first one of the set of communication devices based on the first waveform parameter.
  • the processing circuit is further configured to: allocate, to the first terminal device and the group of communication devices, the same communication resource as the communication resource allocated by the neighboring base station to the second terminal device; A terminal device reports the first waveform parameter; and instructs the first communication device to send a waveform parameter of the first communication device to the second communication device.
  • the first group of communication devices including the first communication device and the second communication device
  • the second communication device including processing circuitry, the processing circuit configured to Determining a precoding matrix to be used by the first communication device based on a first waveform parameter of the first communication device and a second waveform parameter of a terminal device served by the base station acquired from a base station, wherein The first waveform parameter is related to the formation of a signal waveform transmitted by the first communication device, and the second waveform parameter is related to the formation of a signal waveform transmitted by the terminal device.
  • the processing circuit is further configured to: estimate channel state information of a channel between the first communication device and the second communication device, and estimate a channel between the terminal device and the second communication device Channel status information.
  • the processing circuit is further configured to determine a precoding matrix to be used by the first communication device based on the estimated channel state information.
  • a communication method in a communication system comprising: acquiring, by a base station, a first waveform parameter of a first terminal device served by the base station; acquiring, by the base station, a neighboring base station from a neighboring base station a second waveform parameter of the second terminal device; determining, by the base station, a precoding matrix to be used by the first terminal device based on the first waveform parameter and the second waveform parameter, wherein the first waveform The parameter relates to formation of a signal waveform transmitted by the first terminal device, the second waveform parameter being related to formation of a signal waveform transmitted by the second terminal device.
  • the method further includes: estimating channel state information by the base station; acquiring, by the base station, channel state information estimated by the neighboring base station from the neighboring base station; and determining, by the base station, based on the estimated channel state information and The acquired channel state information is used to determine a precoding matrix to be used by the first terminal device.
  • the method further includes: transmitting, by the base station, the first waveform parameter of the first terminal device to a second one of a group of communication devices managed by the base station; by the second communication device Acquiring a third waveform parameter of the first one of the set of communication devices, wherein the third waveform parameter is related to formation of a signal waveform sent by the first communication device; by the second communication device A precoding matrix to be used by the first communication device is determined based on the first waveform parameter and the third waveform parameter.

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Abstract

一种用于与两组通信设备进行无线通信的电子设备，包括处理电路，处理电路被配置为：获取与第一组通信设备有关的第一波形参数，第一波形参数与用于第一组通信设备的通信的信号波形的形成有关；将第一波形参数通知给第二组通信设备，以使第二组通信设备能够基于第一波形参数来确定用于第二组通信设备的通信的预编码矩阵。还公开了一种无线通信方法、基站和一组通信设备中的第二无线通信设备。

Description

无线通信方法和无线通信设备 技术领域
本发明总体涉及无线通信方法和无线通信设备，具体地，涉及在移动通信***中消除干扰的方法和设备。
背景技术
随着移动通信的不断发展，干扰问题成为了限制***吞吐量的关键问题之一。对此已经进行了大量研究，主要是从发射端和接收端两个方面减小干扰的影响。在发送端，频域和时域资源被动态地分配。在频域，触发信息在基站之间进行传输，从而控制发射功率和其他资源。载波聚合是另外一种方式，主要针对小区边缘的用户，通过交叉载波的调度对数据进行接收。在时域，提出了近似空白子帧技术，通过降低干扰源在某些子帧中的活跃程度来为被干扰用户创建保护子帧，在保护子帧期间，干扰源不发射任何信号，只有被干扰用户是活跃的。在接收端，提出了一些增强的接收机算法，主要包含以下几种技术：干扰抑制技术，这种技术是对接收的信号进行线性滤波处理，从而抑制干扰；最大似然接收技术，这种技术可以获得最优的***性能，但是由于复杂度太高，在实际***中很难实现；逐次干扰消除技术，这种技术在复杂度和性能方面进行了折中。这些技术提高了复用因子，但***总的自由度并没有改变。
干扰对齐技术是近几年提出的能有效对抗干扰的一种技术，其将信号空间划分为期望信号空间和干扰信号空间两个部分，通过预编码技术使干扰在接收端重叠，从而压缩干扰信号所占的信号容量，消除干扰信号对期望信号的影响，以达到增加***的自由度，有效提高***吞吐量的目的。
在未来移动通信***中将会使用新的波形，例如，通用滤波多载波(Universal filtered multicarrier，UFMC),滤波-正交频分复用(Filtered orthogonal frequency division multiplexing，F-OFDM)等，以消除不同子带在不同频偏下所产生的干扰。然而，以上所述的干扰消除技术均是基于传统的波形，而没有考虑未来移动通信***中可能采用的新波形的特性。
因此，期望提出一种用于面向未来通信的新波形的干扰消除方案，并 且更佳的是该干扰消除方案也能够兼容传统波形。
发明内容
为此，本发明提出了能够解决上述的一个或多个问题的干扰消除方案。
根据本发明的一个方面，提供了一种用于与两组通信设备进行无线通信的电子设备，所述电子设备包括处理电路，所述处理电路被配置为：获取与所述第一组通信设备有关的第一波形参数，所述第一波形参数与用于所述第一组通信设备的通信的信号波形的形成有关；将所述第一波形参数通知给所述第二组通信设备，以使所述第二组通信设备能够基于所述第一波形参数来确定用于所述第二组通信设备的通信的预编码矩阵。
根据本发明的另一个方面，提供了一种通信***中的第一组通信设备中的第二通信设备，所述通信***包括所述第一组通信设备和第二组通信设备，所述第二通信设备包括处理电路，所述处理电路被配置为：基于与所述第一组通信设备有关的第一波形参数以及与所述第二组通信设备有关的第二波形参数，来确定用于所述第一组通信设备的通信的预编码矩阵，其中，所述第一波形参数与用于所述第一组通信设备的通信的信号波形的形成有关，所述第二波形参数与用于所述第二组通信设备的通信的信号波形的形成有关。
根据本发明的另一个方面，提供了一种通信***中的通信方法，所述通信***包括基站、由第一通信设备和第二通信设备组成的第一组通信设备、以及由第三通信设备和第四通信设备组成的第二组通信设备，所述方法包括：由所述第一组通信设备中的第一通信设备向所述基站报告波形参数，所述波形参数与所述第一通信设备所发送的信号波形的形成有关；由所述第一组通信设备中的第二通信设备向所述基站报告由所述第二通信设备估计的信道状态信息；由所述基站将从所述第一组通信设备获取的波形参数和信道状态信息通知给所述第二组通信设备中的第四通信设备；由所述第四通信设备基于以下内容来确定用于所述第二组通信设备中的第三通信设备的预编码矩阵：所述第三通信设备的波形参数、由所述第四通信设备估计的信道状态信息、以及从所述基站获取的所述第一组通信设备的波形参数和信道状态信息。
根据本发明的另一个方面，提供了一种通信***中的基站设备，所述 基站设备包括处理电路，所述处理电路被配置为：基于由所述基站设备服务的第一终端设备的第一波形参数和由相邻基站服务的第二终端设备的第二波形参数来确定将由所述第一终端设备使用的预编码矩阵，其中，所述第一波形参数与所述第一终端设备所发送的信号波形的形成有关，所述第二波形参数与所述第二终端设备所发送的信号波形的形成有关。
根据本发明的另一个方面，提供了一组通信设备中的第二通信设备，所述一组通信设备包括互相通信的第一通信设备和所述第二通信设备，所述第二通信设备包括处理电路，所述处理电路被配置为：基于所述第一通信设备的第一波形参数以及从基站获取的由所述基站服务的终端设备的第二波形参数，来确定将由所述第一通信设备使用的预编码矩阵，其中，所述第一波形参数与所述第一通信设备所发送的信号波形的形成有关，所述第二波形参数与所述终端设备所发送的信号波形的形成有关。
根据本发明的另一个方面，提供了一种通信***中的通信方法，所述方法包括：由基站获取所述基站所服务的第一终端设备的第一波形参数；由所述基站从相邻基站获取所述相邻基站所服务的第二终端设备的第二波形参数；由所述基站基于所述第一波形参数和所述第二波形参数来确定将由所述第一终端设备使用的预编码矩阵，其中，所述第一波形参数与所述第一终端设备所发送的信号波形的形成有关，所述第二波形参数与所述第二终端设备所发送的信号波形的形成有关。
根据本发明的另一个方面，提供了一种其上存储有程序的计算机存储介质，所述程序在被执行时使得计算机实现如上所述的通信方法。
附图说明
可以通过参考下文中结合附图所给出的描述来更好地理解本发明，其中在所有附图中使用了相同或相似的附图标记来表示相同或者相似的部件。附图连同下面的详细说明一起包含在本说明书中并且形成本说明书的一部分，而且用来进一步说明本发明的优选实施例和解释本发明的原理和优点。在附图中：
图1示意地示出了UFMC上行传输的框图。
图2示意地示出了根据本发明第一实施例的存在干扰的通信场景。
图3示出了根据本发明第一实施例的干扰消除方案的信令交互图。
图4示意地示出了根据本发明第二实施例的存在干扰的通信场景。
图5示出了根据本发明第二实施例的干扰消除方案的信令交互图。
图6示意地示出了根据本发明第三实施例的存在干扰的通信场景。
图7示出了根据本发明第三实施例的干扰消除方案的信令交互图。
图8示出了作为用户设备的一个示例的智能电话的示意性配置框图。
图9示出了作为基站的一个示例的eNB的示意性配置框图。
图10示出了计算机硬件的示意性配置框图。
具体实施方式
本发明提出了适用于新波形(例如，基于时域滤波的UFMC、F-OFDM)的干扰消除方案，以下将主要以UFMC为例来描述本发明的方案。然而，需要说明的是，本发明的方案也适用于传统的多载波波形，包括循环前缀-正交频分复用(Cyclic prefix orthogonal frequency division multiplexing,CP-OFDM)，离散傅里叶变换扩频正交频分复用(Discrete Fourier transform spread OFDM,DFT-S-OFDM)等。
图1示出了多用户UFMC上行传输的示意性框图。如图1所示，总的N个子载波被划分为B个子带，每个子带占用N/B个子载波，可以给每个用户分配一个或者多个子带。对于第i个子带而言，长度为N B的频域信号X i经过N点快速傅立叶逆变换(IFFT)被变换到时域。在IFFT之后，针对每个子带，时域信号经过长度为L的滤波器，然后经滤波的信号通过无线信道被传输至接收端。
在接收端，首先对接收到的信号进行时域上的预处理，例如，通过时域的连续相位旋转来进行频偏补偿。此外，对接收到的一帧信号进行填零操作，以便随后进行2N点快速傅立叶变换(FFT)，FFT用于将时域信号变换到频域。在FFT之后进行解调。因为发送端共有N个子载波，接收端进行2N点FFT，所以根据频域上的对应关系，接收端的频域信号只有偶数的子载波上携带有用信息。因此在解调中，利用偶数的子载波上的信息来恢复发送端的N个子载波上的信息。
图2示出了根据本发明第一实施例在小区覆盖范围内的D2D用户设备组之间存在干扰的场景，其中用户设备i1和用户设备i2是进行D2D通信的一组用户设备，用户设备j1和用户设备j2是进行D2D通信的另一 组用户设备。这两组用户设备位于基站1的覆盖范围内，并且工作在相同的频段，因此相互之间存在干扰。图2中以实线示出了每组用户设备之间的通信链路，以虚线示出了两组用户设备之间的干扰链路。在下文中，假定用户设备i1和用户设备j1是发送设备，用户设备i2和用户设备j2是接收设备。
定义IFFT变换矩阵W(N)为
Figure PCTCN2018094751-appb-000001
其中，N为IFFT变换的大小。
此外，定义频偏矩阵为：
Figure PCTCN2018094751-appb-000002
其中，ε i,j表示第j个用户与第i个用户之间的频偏。
在本文中假设每个资源块有
Figure PCTCN2018094751-appb-000003
个子载波。因此在频域，图2中所示的用户设备i2和用户设备j2的接收信号可以被分别表示为：
Figure PCTCN2018094751-appb-000004
Figure PCTCN2018094751-appb-000005
其中，X (m)＝[X (m)(0),X (m)(1),…,X (m)(N 1-1)] T表示第m个用户设备发射的频域信号，例如以上等式中的X i1和X j1分别表示用户设备i1和用户设备j1发送的频域信号。此外，[·] T表示转置；[·] H表示共轭转置；
Figure PCTCN2018094751-appb-000006
表示取矩阵的前N 1行的元素；F m表示第m个用户设备使用的滤波器(图1中所示的长度为L的滤波器)的系数构成的托普利兹矩阵，该矩阵的大小为(N+L FIR-1)×N，并且第一列是[f m(0),f m(1),...,f m(L FIR-1),0,...,0] T，其中L FIR表示滤波器的长度；H m,n是从第n个用户设备到第m个用户设备的信道系数构成的托普利兹矩阵，该矩阵的大小为(N+L FIR+L ch-2)×(N+L FIR-1)，并且第一列为[h m,n(0),h m,n(1),...,h m,n(L ch-1),0,...,0] T，其中L ch表示信道的长度；
Figure PCTCN2018094751-appb-000007
是填零矩阵，其中
Figure PCTCN2018094751-appb-000008
是秩为N+L FIR+L ch-2的单位矩阵；Z i2和Z j2为噪声分 量。在等式(3)和(4)中，符号
Figure PCTCN2018094751-appb-000009
表示定义，以便将较长的表达式以更简洁的符号来表示。如符号
Figure PCTCN2018094751-appb-000010
所示，在等式(3)和(4)中，定义了信道矩阵
Figure PCTCN2018094751-appb-000011
它们均为2N 1×N 1的矩阵。信道矩阵
Figure PCTCN2018094751-appb-000012
分别反映了用户设备i1到用户设备i2、用户设备j1到用户设备i2、用户设备i1到用户设备j2、用户设备j1到用户设备j2的传输信道特性。
需要说明的是，在UFMC***中，针对每个子带引入了滤波器，该滤波器决定了所发送信号的波形。因此可以认为等式(3)和(4)中的滤波器系数矩阵F表示与信号波形的形成有关的波形参数。然而，本发明中所讨论的波形参数并不限于上述矩阵F，在其它***(例如F-OFDM)中，波形参数可能表现为不同的形式。
如上所述，在UFMC***中，接收端在将信号经过2N点FFT变换到频域后，只有偶数的子载波上携带有用信息，因此定义如下的等效信道矩阵：
Figure PCTCN2018094751-appb-000013
其中，
Figure PCTCN2018094751-appb-000014
(1:2:2N 1,:)表示间隔地取出矩阵
Figure PCTCN2018094751-appb-000015
的N1行。
为了消除图2所示的两组D2D用户设备之间的干扰，本发明提出了 基于预编码的干扰消除方法。令P i1和P j1分别表示用户设备i1和用户设备j1使用的频域预编码矩阵。
首先，向量空间G i2,i1P i1应与向量空间G i2,j1P j1正交，以使得对于用户设备i2来说，来自用户设备i1的信号(有用信号)将与来自用户设备j1的信号(干扰信号)正交。由此可得到向量空间P i1与向量空间(G i2,i1) HG i2,j1P j1正交，其中(·) H表示共轭转置。
其次，向量空间G j2,i1P i1应与向量空间G j2,j1P j1正交，以使得对于用户设备j2来说，来自用户设备i1的信号(干扰信号)将与来自用户设备j1的信号(有用信号)正交。由此可得到向量空间P j1和向量空间(G j2，i1) HG j2，j1P j1正交。
因此，(G i2,i1) HG i2,j1P j1构成的向量空间和(G j2,i1) HG j2,j1P j1构成的向量空间是同一空间，从而可以得到：
Figure PCTCN2018094751-appb-000016
其中，所定义的G j1,orth是N 1×N 1的矩阵。为了使得两个用户设备组之间 的干扰可以被消除，用户设备j1的频域预编码矩阵P j1由矩阵G j1,orth的N 1/2个特征向量构成。以类似的方式可以获得用户设备i1的预编码矩阵P i1。
在获得了频域预编码矩阵P i1和P j1之后，用户设备i1和用户设备j1所发送的信号可以表示为：
X i1＝P i1S i1            --(7)
X j1＝P j1S j1          --(8)
其中，S i1和S j1是用户设备i1和用户设备j1的频域信息向量。
由上可见，在计算频域预编码矩阵的过程中，考虑了波形参数(例如滤波器系数矩阵F)，由此所计算的预编码矩阵能够适应于新波形的特性。发送端利用这样的预编码矩阵进行预编码，能够使得干扰信号和有用信号处于相互正交的空间，从而实现干扰消除的效果。
图3示出了在图2所示的场景中消除两组用户设备之间的干扰的方案的信令交互图。在图3中，同样假定用户设备i1，j1为发送设备，用户设备i2，j2为接收设备。
如图3所示，在步骤S300，用户设备i1，i2以及用户设备j1，j2向向基站发送D2D通信请求，并同时向基站报告自身的位置信息。
基站在步骤S310向两组用户设备指示同意了D2D通信请求，并在步骤S320为各个用户设备分配频谱资源。例如，出于节约频谱资源的考虑，或者在频谱资源有限的情况下，基站可以为两组用户设备分配相同的频谱资源。在此情况下，基站指示这两组用户设备将执行干扰消除。
响应于基站的指示，用户设备i1和用户设备j1在步骤S330将自己的 波形参数报告给基站。波形参数决定着用户设备i1，j1所发送的信号波形的形成，并且例如可以包括以下中的一个或多个：多载波滤波器类型、滤波器长度、滤波器带外衰减、FFT\IFFT的变换长度、载波间隔，并行传输的数据流的数目、离散傅里叶变换(DFT)扩展的长度等。
随后，在步骤S340，用户设备i1发送训练序列，以供用户设备i2和用户设备j2估计来自用户设备i1的信道的状态。同样，用户设备j1发送训练序列，以供用户设备i2和用户设备j2估计来自用户j1的信道。
用户设备i2根据接收到的来自用户设备i1和j1的训练序列而估计来自用户设备i1和j1的信道的状态信息，并将估计的信道状态信息报告给基站。同样地，用户设备j2根据接收到的训练序列而估计来自用户设备i1和j1的信道的状态信息，并将估计的信道状态信息报告给基站，如步骤S350所示。
基站在步骤S360将有关一个用户设备组的信息通知给另一组的用户设备。具体来说，基站将用户设备i1的波形参数以及用户设备i2所估计的信道状态信息发送给用户设备j2，并且将用户设备j1的波形参数以及用户j2所估计的信道状态信息发送给用户设备i2。
由此，作为接收设备的用户设备j2可以从基站获得另一组的发送设备i1的波形参数以及接收设备i2所估计的信道状态信息，即，获得了等式(3)和(4)中的矩阵F i1以及矩阵H i2,i1和H i2,j1。此外，用户设备j2通过自身执行的信道估计能够得到等式(3)和(4)中的矩阵H j2,i1和H j2,j1。此外，用户设备j2可以预先从同一组的发送设备j1接收该发送设备j1的波形参数(图中未示出)，即等式(3)和(4)中的滤波器矩阵F j1。需要说明的是，用户设备j2可以在与用户设备j1建立通信后的任何时间从用户设备j1获取其波形参数。替选地，用户设备j2也可以从基站获得用户设备j1的波形参数。
此时，用户设备j2能够根据等式(3)和(4)确定信道矩阵
Figure PCTCN2018094751-appb-000017
Figure PCTCN2018094751-appb-000018
进而根据等式(5)确定等效信道矩阵，以及根据等式(6)计算用于同一组的发送设备j1的预编码矩阵P j1，如步骤S370所示。以相同的方式，作为接收设备的用户设备i2也能够根据从基站接收的信息以及自身执行的信道估计结果来计算同一组的发送设备i1的预编码矩阵P i1。
然后，在步骤S380，用户设备i2和用户设备j2分别将所计算的频域预编码矩阵反馈至与其相对应的发送端的用户设备i1和用户设备j1。例如，用户设备i2和用户设备j2可以分别向用户设备i1和用户设备j1发送预编码矩阵索引。
之后，用户设备i1和用户设备j1利用接收到的预编码矩阵来发送信号，如步骤S390所示。
图4示出了根据本发明第二实施例同时存在着小区间干扰和D2D用户设备干扰的场景。如图4所示，存在着分别由基站1和基站2管理的两个小区，每个基站服务于若干个用户设备，其中小区1中的用户设备j与小区2中的用户设备j位于各自小区的边缘区域，它们使用相同的时间、频率资源，因此相互之间存在着干扰，即，小区间干扰。用户设备i1和用户设备i2是在小区1内部进行D2D通信的一组用户设备，它们使用与用户设备j相同的时间、频率资源，因此用户设备i1和用户设备i2在通信过程中会受到来自小区1的用户设备j的上行信号的干扰，即，D2D用户设备干扰。在下文中，假定用户设备i1是发送设备，用户设备i2是接收设备。
在传输过程中，每个资源块有
Figure PCTCN2018094751-appb-000019
个子载波。因此在频域，基站1的接收信号可以表示为：
Figure PCTCN2018094751-appb-000020
基站2的接收信号可以表示为：
Figure PCTCN2018094751-appb-000021
用户设备i2的接收信号可以表示为：
Figure PCTCN2018094751-appb-000022
其中，ε m,(n,k)表示小区n中的用户设备k与基站m之间的频偏，例如，ε 1,(2,j)表示小区2中的用户设备j与基站1之间的频偏；ε (m,p),(n,k)表示小区n中的用户设备k与小区m中的用户设备p之间的频偏，例如ε (1,i2),(1,j)表示小区1中的用户设备j与小区1中的用户设备i2之间的 频偏。此外，X (m,n)＝[X (m,n)(0),X (m,n)(1),…,X (m,n)(N 1-1)] T表示小区m中的用户设备n发送的频域信号，例如，X (1,j)表示小区1中的用户设备j发送的频域信号。
Figure PCTCN2018094751-appb-000023
表示取矩阵的前N1行的元素。F (m,n)表示小区m中的用户设备n使用的滤波器系数构成的托普利兹矩阵，例如F (1,j)表示小区1中的用户设备j使用的滤波器系数矩阵。与第一实施例类似地，矩阵F代表与信号波形的形成有关的波形参数，但本发明中的波形参数不限于此。矩阵F (m,n)的大小为(N+L FIR-1)×N，并且第一列是[f (m,n)(0),f (m,n)(1),...,f (m,n)(L FIR-1),0,...,0] T，其中L FIR表示滤波器的长度。H m,(n,k)是由从小区n的用户设备k到基站m的信道系数构成的托普利兹矩阵，例如，H 1,(2,j)表示小区2中的用户设备j到基站1的信道系数矩阵，该矩阵的大小为(N+L FIR+L ch-2)×(N+L FIR-1)，并且第一列为[h m,(n,k)(0),h m,(n,k)(1),...,h m,(n,k)(L ch-1),0,...,0] T，其中L ch表示信道的长度。H (m,p),(n,k)是由从小区n的用户设备k到小区m的用户设备p的信道系数构成的托普利兹矩阵，例如，H (1,i2),(1,j)表示从小区1的用户设备j到小区1的用户设备i2的信道系数矩阵，该矩阵的大小为(N+L FIR+L ch-2)×(N+L FIR-1)，并且第一列为[h (m，p)，(n，k)(0)，h (m，p)，(n，k)(1)，…，h (m，p)，(n，k)(L ch-1)，0，…，0] T。此外，
Figure PCTCN2018094751-appb-000024
是填零矩阵，其中
Figure PCTCN2018094751-appb-000025
是秩为N+L FIR+L ch-2的单位矩阵。D 1，D 2和D 3为噪 声分量。符号
Figure PCTCN2018094751-appb-000026
表示定义，也就是说，将等式(9)-(11)中的较长的表达式定义为信道矩阵
Figure PCTCN2018094751-appb-000027
Figure PCTCN2018094751-appb-000028
这些信道矩阵的大小均为2N 1×N 1。
因为在UFMC***中，接收端在将信号经过2N点FFT变换到频域后，只有偶数的子载波上携带有用信息，因此定义如下的等效信道矩阵：
Figure PCTCN2018094751-appb-000029
其中，
Figure PCTCN2018094751-appb-000030
表示间隔地取出矩阵
Figure PCTCN2018094751-appb-000031
的N1行。
为了消除图4所示的小区间干扰以及小区中的服务用户设备对D2D用户设备的干扰，本发明提出了基于预编码的干扰消除方法。令P (1,j)，P (1,i1)和P (2,j)分别表示小区1的用户设备j、小区1的用户设备i1和小区2的用户设备j的频域预编码矩阵。
首先，向量空间G 1,(2,j)P (2,j)应与向量空间G 1,(1,j)P (1,j)正交，以使得对于基站1来说，来自小区2中的用户设备j的信号(干扰信号)与来自小区1中的用户设备j的信号(有用信号)正交。因此可得出向量空间P (1,j)和 向量空间(G 1,(1,j)) HG 1,(2,j)P (2,j)正交，其中(·) H表示共轭转置。
其次，向量空间G 2,(1,j)P (1,j)应与向量空间G 2,(2,j)P (2,j)正交，以使得对于基站2来说，来自小区1中的用户设备j的信号(干扰信号)与来自小区2中的用户设备j的信号(有用信号)正交。因此可得出向量空间P (1,j)和向量空间(G 2,(1,j)) HG 2,(2,j)P (2,j)正交。
因此，(G 2,(1,j)) HG 2,(2,j)P (2,j)构成的向量空间和(G 1,(1,j)) HG 1,(2,j)P (2,j)构成的向量空间是同一空间，从而可以得到：
Figure PCTCN2018094751-appb-000032
其中，所定义的G (2,j),orth是N 1×N 1的矩阵。为了使得小区1的用户设备j与小区2的用户设备j之间的干扰可被消除，小区2的用户设备j的频域预编码矩阵P (2,j)由矩阵G (2,j),orth的N 1/2个特征向量构成。以类似的方法可以计算得到小区1的用户设备j的预编码矩阵P (1,j)。
另一方面，为了消除小区1中的用户设备j对于D2D用户设备i2的干扰，应满足向量空间G (1,i2),(1,j)P (1,j)与向量空间G (1,i2),(1,i1)P (1,i1)正交，以使得对于用户设备i2而言，来自小区1中的用户设备j的信号(干扰信号)与来自D2D通信的发送设备i1的信号(有用信号)正交。由此可以得到 向量空间P (1,i1)和向量空间
Figure PCTCN2018094751-appb-000033
正交，也就是说，小区1的用户设备i1的预编码矩阵P (1,i1)对应于
Figure PCTCN2018094751-appb-000034
的零空间，可以表示如下：
Figure PCTCN2018094751-appb-000035
在获得了频域预编码矩阵P (1,j)，P (1,i1)和P (2,j)之后，小区1中的用户设备j、小区1中的用户设备i1和小区2中的用户设备j所发送的信号可以分别表示为：
X (1,j)＝P (1,j)S (1,j)         --(15)
X (1,i1)＝P (1,i1)S (1,i1)         --(16)
X (2,j)＝P (2,j)S (2,j)          --(17)
其中，S是用户设备的频域信息向量。
图5示出了在图4所示的场景中消除小区间干扰以及D2D用户设备干扰的方案的信令交互图。在图5中，假定执行D2D通信的一组用户设备中用户设备i1为发送设备，用户设备i2为接收设备。
如图5所示，在步骤S501，用户设备i1，i2向基站1发送D2D通信请求。基站1在步骤S502向用户设备i1，i2指示同意了D2D通信请求。随后在步骤S503，用户设备i1，i2以及小区1的用户设备j向基站1报告自身的位置信息，并且小区2的用户设备j向基站2报告其位置信息。需要说明的是，报告位置信息的方式并不限于图中所示。例如，用户设备i1，i2可以在发送D2D通信请求的同时报告位置信息，两个小区中的用户设备j也可能在用户设备i1，i2发送D2D通信请求之前就已向基站1或基站2报告了自身的位置信息。
随后，例如经过协商，基站1和基站2可以分别对其管理的用户设备分配频谱资源，并指示这些用户设备执行干扰消除，如步骤S504所示。
在步骤S505，响应于基站的指示，小区1中的用户设备j向基站1报告自己的波形参数，小区2中的用户设备j向基站2报告波形参数，作为D2D通信的发送端的用户设备i1向接收设备i2报告自己的波形参数。
在步骤S506，小区1中的用户设备j发送训练序列，以供基站1、基站2以及用户设备i2估计来自小区1的用户j的信道的状态。此外，小区2中的用户设备j发送训练序列，以供基站1和基站2估计来自小区2的用户j的信道的状态。此外，小区1中的用户设备i1也发送训练序列，以供用户设备i2估计来自用户设备i1的信道的状态。
在步骤S507，基站1、基站2以及用户设备i2基于接收到的训练序列而进行信道估计。具体地，基站1和基站2中的每一个均估计来自小区1的用户j的信道和来自小区2的用户j的信道的状态信息，用户设备i2估计来自用户设备i1的信道和来自小区1的用户设备j的信道的状态信息。
基站1和基站2在步骤S508互相交换各自估计的信道状态信息，并且交换各自管理的用户设备j的波形信息。具体地，基站1将小区1中的用户设备j所报告的波形信息通知给基站2，基站2将小区2中的用户设备j所报告的波形信息通知给基站1。
由此，基站1和基站2获得了等式(9)和(10)中的矩阵F和矩阵H,因此能够根据等式(9)和(10)确定信道矩阵
Figure PCTCN2018094751-appb-000036
Figure PCTCN2018094751-appb-000037
进而根据等式(12)确定等效信道矩阵G 1,(1,j)，G 1,(2,j)，G 2,(1,j)，G 2,(2,j)，以及根据等式(13)获得用于小区1中的用户设备j和小区2中的用户设备j的预编码矩阵P (1,j)和P (2,j)，如步骤S509所示。
然后，在步骤S510，基站1将所获得的用于小区1中的用户设备j的预编码矩阵P (1,j)发送给小区1中的用户设备j，同时将该预编码矩阵发 送给小区1中的用户设备i2。基站2将所获得的用于小区2中的用户设备j的预编码矩阵P (2,j)发送给小区2中的用户设备j。例如，基站1和基站2可以仅发送预编码矩阵索引。随后，小区1中的用户设备j和小区2中的用户设备j可以利用接收到的预编码矩阵来发送信号(未示出)。
在步骤S511，基站1进一步将小区1中的用户设备j的波形参数发送给小区1中的用户设备i2。需要说明的是，在本发明中，基站1不限于在此时将该用户设备j的波形参数通知给用户设备i2，而是还可以在此步骤之前，在接收到由小区1中的用户设备j报告的波形参数之后的任何时间向用户设备i2通知该波形参数。
至此，小区1中的用户设备i2获得了等式(11)中的矩阵F和矩阵H,因此能够根据等式(11)确定信道矩阵
Figure PCTCN2018094751-appb-000038
进而根据等式(12)确定等效信道矩阵G (1,i2),(1,j)，G (1,i2),(1,i1)。由于基站1在步骤S510将为小区1中的用户设备j确定的预编码矩阵P (1,j)也通知给用户设备i2，因此用户设备i2可以根据等式(14)获得用于用户设备i1的预编码矩阵P (1,i1)，如步骤S512所示。
随后，用户设备i2在步骤S513将所获得的预编码矩阵P (1,i1)反馈给用户设备i1。由此，用户设备i1可以利用接收到的预编码矩阵P (1,i1)来向用户设备i2发送信号(未示出)。
图6示出了根据本发明第三实施例在基站覆盖范围以外的D2D通信用户组之间存在干扰的场景。如图6所示，用户设备i1和用户设备i2是进行D2D通信的一组用户设备，用户设备j1和用户设备j2是进行D2D 通信的另一组用户设备，这两组用户设备工作在相同的频段，因此相互之间存在干扰。
与第一实施例相同，在本实施例中干扰存在于进行D2D通信的两组用户设备之间，因此可以基于等式(1)-(6)，以第一实施例中描述的方式来为每组用户设备中的发送设备(用户设备i1，j1)确定频域预编码矩阵。
本实施例与第一实施例的不同之处在于，两组用户设备位于基站的覆盖范围之外，通信场景中不存在基站，因此信令交互流程与第一实施例有所不同。
图7示出了在图6所示的场景中消除两组用户设备之间的干扰的方案的信令交互图。
如图7所示，在步骤S700，用户设备i1向用户设备i2发送D2D通信请求，用户设备j1向用户设备j2发送D2D通信请求。
在步骤S710，用户设备i2和用户设备j2同意该D2D通信请求，并分别对用户设备i1和用户设备j1分配频谱资源。
随后，用户设备i2和用户设备j2互相通知所分配的频谱资源，如步骤S720所示。考虑用户设备i2和用户设备j2分配的频谱资源相同的情况，此时两组用户设备之间存在干扰，因此用户设备i2和用户设备j2指示用户设备i1和用户设备j1执行干扰消除。
响应于用户设备i2和用户设备j2的指示，用户设备i1和用户设备j1在步骤S730将自己的波形参数分别发送给用户设备i2和用户设备j2。
随后，在步骤S740，用户设备i1发送训练序列，以供用户设备i2和用户设备j2估计来自用户设备i1的信道的状态。同样，用户设备j1发送训练序列，以供用户设备i2和用户设备j2估计来自用户j1的信道。
用户设备i2根据接收到的来自用户设备i1和j1的训练序列而估计来自用户设备i1和j1的信道的状态信息。同样地，用户设备j2根据接收到的训练序列而估计来自用户设备i1和j1的信道的状态信息，如步骤S750所示。
用户设备i2和用户设备j2在步骤S760相互交换所接收到的波形参数以及各自估计的信道状态信息。具体来说，用户设备i2将用户设备i1的波形参数以及用户设备i2所估计的信道状态信息发送给用户设备j2，用 户设备j2将用户设备j1的波形参数以及用户设备j2所估计的信道状态信息发送给用户设备i2。
至此，作为接收设备的用户设备i2和用户设备j2获得了等式(3)和(4)中的矩阵F以及矩阵H，由此能够确定信道矩阵H，进而根据等式(5)确定等效信道矩阵G，以及根据等式(6)计算用于发送设备i1，j1的预编码矩阵P i1和P j1，如步骤S770所示。
然后，在步骤S780，用户设备i2和用户设备j2分别将所计算的频域预编码矩阵发送至用户设备i1和用户设备j1。例如，用户设备i2和用户设备j2可以发送预编码矩阵索引。随后，用户设备i1和用户设备j1在步骤S790利用该预编码矩阵来发送信号。
以上结合图2至图7针对基于时域滤波的新波形(例如UFMC)描述了本发明的干扰消除方案，然而，本发明也同样适用于传统波形。在应用于传统波形时，将不考虑波形参数。例如在CP-OFDM的情况下，由于没有针对每个子带的滤波器，因此可以将上文中的滤波器系数矩阵F替换为加循环前缀矩阵，加循环前缀矩阵可以表示为：
Figure PCTCN2018094751-appb-000039
其中，I N表示秩为N的单位矩阵，N cp表示循环前缀的长度。
除此之外，计算预编码矩阵的方式以及设备之间的信令流程与上文描述的相同。因此，本发明的方案能够适用于新波形与传统波形共存的通信场景下的干扰消除，具有良好的后向兼容性。
此外，本发明也能够适用于混合单载波技术以及多载波技术。以第一实施例中的D2D用户设备组间干扰消除为例，假设用户设备i1和i2采用UFMC，而用户设备j1和j2采用DFT-S-OFDM。在频域中，用户设备i2和用户设备j2的接收信号可以表示为：
Figure PCTCN2018094751-appb-000040
Figure PCTCN2018094751-appb-000041
其中T j1表示加循环前缀矩阵，这里设置循环前缀的长度为L FIR-1。
此外，X i1＝P i1W(N 1)s i1，s i1表示用户i1的时域信息；X j1＝P j1W(N 1)s j1，s j1表示用户j1的时域信息。
随后，可以根据第一实施例中的方法来确定预编码矩阵P i1和P j1。
以上结合各个实施例描述了本发明提出的干扰消除方案，该方案在确定预编码矩阵的过程中考虑了面向未来移动通信的新波形的特性，因此利用该预编码矩阵能够使得有用信号空间与干扰信号空间相互正交，从而实现更好的干扰消除效果。此外，通过预编码过程，本发明的方案还可以有效减小不同用户频偏所引起的干扰。此外，本发明的方案还能够适用于传统的波形，因此具有良好的后向兼容性。
本发明能够应用于各种产品。例如，上述实施例中的基站可以包括任何类型的演进型节点B(eNB)，诸如宏eNB和小eNB。小eNB可以是覆盖比宏小区小的小区的eNB，诸如微微eNB、微eNB和家庭(毫微微) eNB。代替地，该网络侧设备或基站也可以包括任何其他类型的基站，诸如NodeB和基站收发台(BTS)。基站可以包括：被配置为控制无线通信的主体(也称为基站设备)；以及设置在与主体不同的地方的一个或多个远程无线头端(RRH)。另外，各种类型的终端设备也可以通过暂时地或半持久性地执行基站功能而作为基站工作。
另一方面，上述实施例中的用户设备例如可以被实现为通信终端设备(诸如智能电话、平板个人计算机(PC)、笔记本式PC、便携式游戏终端、便携式/加密狗型移动路由器和数字摄像装置)或者车载终端设备(诸如汽车导航设备)，还可以被实现为执行机器对机器(M2M)通信的终端设备，也称为机器类型通信(MTC)终端设备。此外，该终端设备或用户设备也可以是安装在上述终端中的每个终端上的无线通信模块(诸如包括单个晶片的集成电路模块)。
以下结合图8以智能电话作为一个示例来描述终端设备或用户设备的实现。
图8示出了智能电话的示意性配置的框图。如图8所示，智能电话2500包括处理器2501、存储器2502、存储装置2503、外部连接接口2504、摄像装置2506、传感器2507、麦克风2508、输入装置2509、显示装置2510、扬声器2511、无线通信接口2512、一个或多个天线开关2515、一个或多个天线2516、总线2517、电池2518以及辅助控制器2519。
处理器2501可以为例如CPU或片上***(SoC)，并且控制智能电话2500的应用层和另外层的功能。存储器2502包括RAM和ROM，并且存储数据和由处理器2501执行的程序。存储装置2503可以包括存储介质，诸如半导体存储器和硬盘。外部连接接口2504为用于将外部装置(诸如存储卡和通用串行总线(USB)装置)连接至智能电话2500的接口。
摄像装置2506包括图像传感器(诸如电荷耦合器件(CCD)和互补金属氧化物半导体(CMOS))，并且生成捕获图像。传感器2507可以包括一组传感器，诸如测量传感器、陀螺仪传感器、地磁传感器和加速度传感器。麦克风2508将输入到智能电话2500的声音转换为音频信号。输入装置2509包括例如被配置为检测显示装置2510的屏幕上的触摸的触摸传感器、小键盘、键盘、按钮或开关，并且接收从用户输入的操作或信息。显示装置2510包括屏幕(诸如液晶显示器(LCD)和有机发光二极管(OLED)显示器)，并且显示智能电话2500的输出图像。扬声器2511将从智能电话2500输出的音频信号转换为声音。
无线通信接口2512支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且执行无线通信。无线通信接口2512通常可以包括例如基带(BB)处理器2513和射频(RF)电路2514。BB处理器2513可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路2514可以包括例如混频器、滤波器和放大器，并且经由天线2516来传送和接收无线信号。无线通信接口2512可以是其上集成有BB处理器2513和RF电路2514的一个芯片模块。如图8所示，无线通信接口2512可以包括多个BB处理器2513和多个RF电路2514。但是，无线通信接口2512也可以包括单个BB处理器2513或单个RF电路2514。
此外，除了蜂窝通信方案之外，无线通信接口2512还可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线局域网(LAN)方案。在此情况下，无线通信接口2512可以包括针对每种无线通信方案的BB处理器2513和RF电路2514。
天线开关2515中的每一个在包括在无线通信接口2512中的多个电路(例如用于不同的无线通信方案的电路)之间切换天线2516的连接目的地。
天线2516中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口2512传送和接收无线信号。如图8所示，智能电话2500可以包括多个天线2516。但是，智能电话2500也可以包括单个天线2516。
此外，智能电话2500可以包括针对每种无线通信方案的天线2516。在此情况下，可以从智能电话2500的配置中省略天线开关2515。
总线2517将处理器2501、存储器2502、存储装置2503、外部连接接口2504、摄像装置2506、传感器2507、麦克风2508、输入装置2509、显示装置2510、扬声器2511、无线通信接口2512以及辅助控制器2519彼此连接。电池2518经由馈线向智能电话2500的各个部件提供电力，馈线在图中被部分地示为虚线。辅助控制器2519例如在睡眠模式下操作智能电话2500的最小必需功能。
在图8所示的智能电话2500中，终端设备的收发装置可以由无线通信接口2512实现。终端设备的各功能单元的功能的至少一部分也可以由处理器2501或辅助控制器2519实现。例如，可以通过由辅助控制器2519 执行处理器2501的部分功能而减少电池2518的电力消耗。此外，处理器2501或辅助控制器2519可以通过执行存储器2502或存储装置2503中存储的程序而执行终端设备的各功能单元的功能的至少一部分。
以下结合图9以eNB作为一个示例来描述基站的实现。
图9示出了eNB的示意性配置的框图。如图9所示，eNB 2300包括一个或多个天线2310以及基站设备2320。基站设备2320和每个天线2310可以经由射频(RF)线缆彼此连接。
天线2310中的每一个均包括单个或多个天线元件(诸如包括在多输入多输出(MIMO)天线中的多个天线元件)，并且用于基站设备2320发送和接收无线信号。如图9所示，eNB 2300可以包括多个天线2310。例如，多个天线2310可以与eNB 2300使用的多个频带兼容。虽然图9示出eNB 2300包括多个天线2310的示例，但是eNB 2300也可以包括单个天线2310。
基站设备2320包括控制器2321、存储器2322、网络接口2323以及无线通信接口2325。
控制器2321可以为例如CPU或DSP，并且操作基站设备2320的较高层的各种功能。例如，控制器2321根据由无线通信接口2325处理的信号中的数据来生成数据分组，并经由网络接口2323来传递所生成的分组。控制器2321可以对来自多个基带处理器的数据进行捆绑以生成捆绑分组，并传递所生成的捆绑分组。控制器2321可以具有执行如下控制的逻辑功能：该控制诸如为无线资源控制、无线承载控制、移动性管理、接纳控制和调度。该控制可以结合附近的eNB或核心网节点来执行。存储器2322包括RAM和ROM，并且存储由控制器2321执行的程序和各种类型的控制数据(诸如终端列表、传输功率数据以及调度数据)。
网络接口2323为用于将基站设备2320连接至核心网2324的通信接口。控制器2321可以经由网络接口2323与核心网节点或另外的eNB进行通信。在此情况下，eNB 2300与核心网节点或其他eNB可以通过逻辑接口(诸如S1接口和X2接口)而彼此连接。网络接口2323还可以为有线通信接口或用于无线回程线路的无线通信接口。如果网络接口2323为无线通信接口，则与无线通信接口2325所使用的频带相比，网络接口2323可以使用较高频带以用于无线通信。
无线通信接口2325支持任何蜂窝通信方案(诸如长期演进(LTE) 和LTE-先进)，并且经由天线2310来提供到位于eNB 2300的小区中的终端的无线连接。无线通信接口2325通常可以包括例如BB处理器2326和RF电路2327。BB处理器2326可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行层(例如L1、介质访问控制(MAC)、无线链路控制(RLC)和分组数据汇聚协议(PDCP))的各种类型的信号处理。代替控制器2321，BB处理器2326可以具有上述逻辑功能的一部分或全部。BB处理器2326可以为存储通信控制程序的存储器，或者为包括被配置为执行程序的处理器和相关电路的模块。更新程序可以使BB处理器2326的功能改变。该模块可以为***到基站设备2320的槽中的卡或刀片。可替代地，该模块也可以为安装在卡或刀片上的芯片。同时，RF电路2327可以包括例如混频器、滤波器和放大器，并且经由天线2310来传送和接收无线信号。
如图9所示，无线通信接口2325可以包括多个BB处理器2326。例如，多个BB处理器2326可以与eNB 2300使用的多个频带兼容。如图9所示，无线通信接口2325可以包括多个RF电路2327。例如，多个RF电路2327可以与多个天线元件兼容。虽然图9示出无线通信接口2325包括多个BB处理器2326和多个RF电路2327的示例，但是无线通信接口2325也可以包括单个BB处理器2326或单个RF电路2327。
在图9所示的eNB 2300中，基站侧设备的收发装置可以由无线通信接口2325实现。各单元的功能的至少一部分也可以由控制器2321执行。例如，控制器2321可以通过执行存储在存储器2322中的程序而执行各单元的功能的至少一部分。
在上述实施例中由每个设备或组件执行的一系列处理可以由软件、硬件或者软件和硬件的组合来实现。包括在软件中的程序可以事先存储在例如每个设备或组件的内部或外部所设置的存储介质中。作为一个示例，在执行期间，这些程序被写入随机存取存储器(RAM)并且由处理器(例如CPU)来执行，从而执行在上述实施例中描述的各种处理。
图10是示出了根据程序执行本发明的方案的计算机硬件的示例配置框图。
在计算机1000中，中央处理单元(CPU)1001、只读存储器(ROM)1002以及随机存取存储器(RAM)1003通过总线1004彼此连接。
输入/输出接口1005进一步与总线1004连接。输入/输出接口1005连 接有以下组件：以键盘、鼠标、麦克风等形成的输入单元1006；以显示器、扬声器等形成的输出单元1007；以硬盘、非易失性存储器等形成的存储单元1008；以网络接口卡(诸如局域网(LAN)卡、调制解调器等)形成的通信单元1009；以及驱动移动介质1011的驱动器1010，该移动介质1011诸如是磁盘、光盘、磁光盘或半导体存储器。
在具有上述结构的计算机中，CPU 1001将存储在存储单元1008中的程序经由输入/输出接口1005和总线1004加载到RAM 1003中，并且执行该程序，以便执行上述处理。
要由计算机(CPU 1001)执行的程序可以被记录在作为封装介质的移动介质1011上，该封装介质以例如磁盘(包括软盘)、光盘(包括压缩光盘-只读存储器(CD-ROM))、数字多功能光盘(DVD)等)、磁光盘、或半导体存储器来形成。此外，要由计算机(CPU 1001)执行的程序也可以经由诸如局域网、因特网、或数字卫星广播的有线或无线传输介质来提供。
当移动介质1011安装在驱动器1010中时，可以将程序经由输入/输出接口1005安装在存储单元1008中。另外，可以经由有线或无线传输介质由通信单元1009来接收程序，并且将程序安装在存储单元1008中。可替选地，可以将程序预先安装在ROM 1002或存储单元1008中。
要由计算机执行的程序可以是根据本说明书中描述的顺序来执行处理的程序，或者可以是并行地执行处理或当需要时(诸如，当调用时)执行处理的程序。
本文中所描述的各个设备或单元仅是逻辑意义上的，并不严格对应于物理设备或实体。例如，本文所描述的每个单元的功能可能由多个物理实体来实现，或者，本文所描述的多个单元的功能可能由单个物理实体来实现。此外需要说明的是，在一个实施例中描述的特征、部件、元素、步骤等并不局限于该实施例，而是也可应用于其它实施例，例如替代其它实施例中的特定特征、部件、元素、步骤等，或者与其相结合。
以上已经结合附图详细描述了本发明的实施例以及技术效果，但是本发明的范围不限于此。本领域普通技术人员应该理解的是，取决于设计要求和其他因素，在不偏离本发明的原理和精神的情况下，可以对本文中所讨论的实施方式进行各种修改或变化。本发明的范围由所附权利要求或其等同方案来限定。
此外，本发明也可以被配置如下。
一种用于与两组通信设备进行无线通信的电子设备，所述电子设备包括处理电路，所述处理电路被配置为：获取与所述第一组通信设备有关的第一波形参数，所述第一波形参数与用于所述第一组通信设备的通信的信号波形的形成有关；将所述第一波形参数通知给所述第二组通信设备，以使所述第二组通信设备能够基于所述第一波形参数来确定用于所述第二组通信设备的通信的预编码矩阵。
其中，所述两组通信设备中的第一组通信设备包括第一通信设备和第二通信设备，第二组通信设备包括第三通信设备和第四通信设备，所述处理电路还被配置为：获取与所述第一通信设备所发送的信号波形的形成有关的所述第一波形参数；将所述第一波形参数通知给所述第四通信设备，以使所述第四通信设备能够基于所述第一波形参数来确定将由所述第三通信设备使用的预编码矩阵。
所述处理电路还被配置为：获取由所述第二通信设备估计的信道状态信息；将所获取的信道状态信息通知给所述第四通信设备，以使所述第四通信设备能够基于所述信道状态信息来确定将由所述第三通信设备使用的预编码矩阵。
其中，所述第二通信设备所估计的信道状态信息包括：所述第一通信设备与所述第二通信设备之间的信道的信道状态信息，以及所述第三通信设备与所述第二通信设备之间的信道的信道状态信息。
其中，所述预编码矩阵用于对所述第三通信设备将要发送的信号进行预编码，以用于干扰消除。
所述处理电路还被配置为：获取与所述第二组通信设备有关的第二波形参数，所述第二波形参数与用于所述第二组通信设备的通信的信号波形的形成有关；将所述第二波形参数通知给所述第一组通信设备，以使所述第一组通信设备能够基于所述第二波形参数来确定用于所述第一组通信设备的通信的预编码矩阵。
所述处理电路还被配置为：向所述两组通信设备分配相同的通信资源；以及指示所述两组通信设备分别报告所述第一波形参数和所述第二波形参数。
其中，所述第一波形参数包括以下中的一个或多个：多载波滤波器类型、滤波器长度、滤波器带外衰减、快速傅里叶变换\快速傅里叶逆变换(FFT\IFFT)的变换长度、载波间隔，并行传输的数据流的数目、离散傅 里叶变换(DFT)扩展的长度。
其中，所述信号波形包括以下中的一个或多个：通用滤波多载波(UFMC)、具有加权叠接相加(WOLA)的循环前缀-正交频分复用(CP-OFDM)、灵活的循环前缀-正交频分复用(FCP-OFDM)、滤波-正交频分复用(F-OFDM)、循环前缀-正交频分复用、离散傅里叶变换扩频正交频分复用(DFT-S-OFDM)。
一种通信***中的第一组通信设备中的第二通信设备，所述通信***包括所述第一组通信设备和第二组通信设备，所述第二通信设备包括处理电路，所述处理电路被配置为：基于与所述第一组通信设备有关的第一波形参数以及与所述第二组通信设备有关的第二波形参数，来确定用于所述第一组通信设备的通信的预编码矩阵，其中，所述第一波形参数与用于所述第一组通信设备的通信的信号波形的形成有关，所述第二波形参数与用于所述第二组通信设备的通信的信号波形的形成有关。
其中，所述第一组通信设备包括第一通信设备和所述第二通信设备，所述第二组通信设备包括第三通信设备和第四通信设备，所述处理电路还被配置为：基于与所述第一通信设备所发送的信号波形的形成有关的所述第一波形参数以及与所述第三通信设备所发送的信号波形的形成有关的所述第二波形参数，来确定将由所述第一通信设备使用的预编码矩阵。
所述处理电路还被配置为：估计所述第一通信设备与所述第二通信设备之间的信道的信道状态信息，以及估计所述第三通信设备与所述第二通信设备之间的信道的信道状态信息。
所述处理电路还被配置为：基于由所述处理电路估计的信道状态信息、以及由所述第二组通信设备中的第四通信设备估计的信道状态信息，来确定将由所述第一通信设备使用的预编码矩阵。
所述处理电路还被配置为：基于确定的预编码矩阵，生成预编码矩阵索引以发送至所述第一通信设备。
一种通信***中的通信方法，所述通信***包括基站、由第一通信设备和第二通信设备组成的第一组通信设备、以及由第三通信设备和第四通信设备组成的第二组通信设备，所述方法包括：由所述第一组通信设备中的第一通信设备向所述基站报告波形参数，所述波形参数与所述第一通信设备所发送的信号波形的形成有关；由所述第一组通信设备中的第二通信设备向所述基站报告由所述第二通信设备估计的信道状态信息；由所述基 站将从所述第一组通信设备获取的波形参数和信道状态信息通知给所述第二组通信设备中的第四通信设备；由所述第四通信设备基于以下内容来确定用于所述第二组通信设备中的第三通信设备的预编码矩阵：所述第三通信设备的波形参数、由所述第四通信设备估计的信道状态信息、以及从所述基站获取的所述第一组通信设备的波形参数和信道状态信息。
一种通信***中的基站设备，所述基站设备包括处理电路，所述处理电路被配置为：基于由所述基站设备服务的第一终端设备的第一波形参数和由相邻基站服务的第二终端设备的第二波形参数来确定将由所述第一终端设备使用的预编码矩阵，其中，所述第一波形参数与所述第一终端设备所发送的信号波形的形成有关，所述第二波形参数与所述第二终端设备所发送的信号波形的形成有关。
所述处理电路还被配置为：估计信道状态信息；基于所估计的信道状态信息以及由所述相邻基站估计的信道状态信息，来确定将由所述第一终端设备使用的预编码矩阵。
其中，由所述处理电路估计的信道状态信息包括所述第一终端设备与所述基站设备之间的信道的信道状态信息，以及所述第二终端设备与所述基站设备之间的信道的信道状态信息。
所述处理电路还被配置为：基于确定的预编码矩阵，生成预编码矩阵索引以发送至所述第一终端设备，其中，所述预编码矩阵用于对所述第一终端设备将要发送的信号进行预编码，以用于干扰消除。
所述处理电路还被配置为：将所述第一终端设备的所述第一波形参数通知给由所述基站设备管理的一组通信设备中的第二通信设备，以使得所述第二通信设备能够基于所述第一波形参数来确定将由所述一组通信设备中的第一通信设备使用的预编码矩阵。
所述处理电路还被配置为：向所述第一终端设备和所述一组通信设备分配与所述相邻基站分配给所述第二终端设备的通信资源相同的通信资源；指示所述第一终端设备报告所述第一波形参数；指示所述第一通信设备向所述第二通信设备发送所述第一通信设备的波形参数。
一组通信设备中的第二通信设备，所述一组通信设备包括互相通信的第一通信设备和所述第二通信设备，所述第二通信设备包括处理电路，所述处理电路被配置为：基于所述第一通信设备的第一波形参数以及从基站获取的由所述基站服务的终端设备的第二波形参数，来确定将由所述第一 通信设备使用的预编码矩阵，其中，所述第一波形参数与所述第一通信设备所发送的信号波形的形成有关，所述第二波形参数与所述终端设备所发送的信号波形的形成有关。
所述处理电路还被配置为：估计所述第一通信设备与所述第二通信设备之间的信道的信道状态信息，以及估计所述终端设备与所述第二通信设备之间的信道的信道状态信息。
所述处理电路还被配置为：基于所估计的信道状态信息来确定将由所述第一通信设备使用的预编码矩阵。
一种通信***中的通信方法，所述方法包括：由基站获取所述基站所服务的第一终端设备的第一波形参数；由所述基站从相邻基站获取所述相邻基站所服务的第二终端设备的第二波形参数；由所述基站基于所述第一波形参数和所述第二波形参数来确定将由所述第一终端设备使用的预编码矩阵，其中，所述第一波形参数与所述第一终端设备所发送的信号波形的形成有关，所述第二波形参数与所述第二终端设备所发送的信号波形的形成有关。
所述方法还包括：由所述基站估计信道状态信息；由所述基站从所述相邻基站获取由所述相邻基站估计的信道状态信息；由所述基站基于所估计的信道状态信息以及所获取的信道状态信息，来确定将由所述第一终端设备使用的预编码矩阵。
所述方法还包括：由所述基站将所述第一终端设备的所述第一波形参数发送至由所述基站管理的一组通信设备中的第二通信设备；由所述第二通信设备获取所述一组通信设备中的第一通信设备的第三波形参数，其中，所述第三波形参数与所述第一通信设备所发送的信号波形的形成有关；由所述第二通信设备基于所述第一波形参数和所述第三波形参数，来确定将由所述第一通信设备使用的预编码矩阵。

Claims (27)

  1. 一种用于与两组通信设备进行无线通信的电子设备，所述电子设备包括处理电路，所述处理电路被配置为：
    获取与所述第一组通信设备有关的第一波形参数，所述第一波形参数与用于所述第一组通信设备的通信的信号波形的形成有关；
    将所述第一波形参数通知给所述第二组通信设备，以使所述第二组通信设备能够基于所述第一波形参数来确定用于所述第二组通信设备的通信的预编码矩阵。
  2. 根据权利要求1所述的电子设备，其中，所述两组通信设备中的第一组通信设备包括第一通信设备和第二通信设备，第二组通信设备包括第三通信设备和第四通信设备，所述处理电路还被配置为：
    获取与所述第一通信设备所发送的信号波形的形成有关的所述第一波形参数；
    将所述第一波形参数通知给所述第四通信设备，以使所述第四通信设备能够基于所述第一波形参数来确定将由所述第三通信设备使用的预编码矩阵。
  3. 根据权利要求2所述的电子设备，所述处理电路还被配置为：
    获取由所述第二通信设备估计的信道状态信息；
    将所获取的信道状态信息通知给所述第四通信设备，以使所述第四通信设备能够基于所述信道状态信息来确定将由所述第三通信设备使用的预编码矩阵。
  4. 根据权利要求3所述的电子设备，其中，所述第二通信设备所估计的信道状态信息包括：所述第一通信设备与所述第二通信设备之间的信道的信道状态信息，以及所述第三通信设备与所述第二通信设备之间的信道的信道状态信息。
  5. 根据权利要求2或3所述的电子设备，其中，所述预编码矩阵用于对所述第三通信设备将要发送的信号进行预编码，以用于干扰消除。
  6. 根据权利要求1所述的电子设备，所述处理电路还被配置为：
    获取与所述第二组通信设备有关的第二波形参数，所述第二波形参数与用于所述第二组通信设备的通信的信号波形的形成有关；
    将所述第二波形参数通知给所述第一组通信设备，以使所述第一组通信设备能够基于所述第二波形参数来确定用于所述第一组通信设备的通信的预编码矩阵。
  7. 根据权利要求6所述的电子设备，所述处理电路还被配置为：
    向所述两组通信设备分配相同的通信资源；以及
    指示所述两组通信设备分别报告所述第一波形参数和所述第二波形参数。
  8. 根据权利要求1所述的电子设备，其中，所述第一波形参数包括以下中的一个或多个：多载波滤波器类型、滤波器长度、滤波器带外衰减、快速傅里叶变换\快速傅里叶逆变换(FFT\IFFT)的变换长度、载波间隔，并行传输的数据流的数目、离散傅里叶变换(DFT)扩展的长度。
  9. 根据权利要求1所述的电子设备，其中，所述信号波形包括以下中的一个或多个：通用滤波多载波(UFMC)、具有加权叠接相加(WOLA)的循环前缀-正交频分复用(CP-OFDM)、灵活的循环前缀-正交频分复用(FCP-OFDM)、滤波-正交频分复用(F-OFDM)、循环前缀-正交频分复用、离散傅里叶变换扩频正交频分复用(DFT-S-OFDM)。
  10. 一种通信***中的第一组通信设备中的第二通信设备，所述通信***包括所述第一组通信设备和第二组通信设备，所述第二通信设备包括处理电路，所述处理电路被配置为：
    基于与所述第一组通信设备有关的第一波形参数以及与所述第二组通信设备有关的第二波形参数，来确定用于所述第一组通信设备的通信的预编码矩阵，
    其中，所述第一波形参数与用于所述第一组通信设备的通信的信号波形的形成有关，所述第二波形参数与用于所述第二组通信设备的通信的信号波形的形成有关。
  11. 根据权利要求10所述的第二通信设备，其中，所述第一组通信设备包括第一通信设备和所述第二通信设备，所述第二组通信设备包括第三通信设备和第四通信设备，所述处理电路还被配置为：
    基于与所述第一通信设备所发送的信号波形的形成有关的所述第一波形参数以及与所述第三通信设备所发送的信号波形的形成有关的所述第二波形参数，来确定将由所述第一通信设备使用的预编码矩阵。
  12. 根据权利要求11所述的第二通信设备，所述处理电路还被配置为：
    估计所述第一通信设备与所述第二通信设备之间的信道的信道状态信息，以及估计所述第三通信设备与所述第二通信设备之间的信道的信道状态信息。
  13. 根据权利要求12所述的第二通信设备，所述处理电路还被配置为：
    基于由所述处理电路估计的信道状态信息、以及由所述第二组通信设备中的第四通信设备估计的信道状态信息，来确定将由所述第一通信设备使用的预编码矩阵。
  14. 根据权利要求11或13所述的第二通信设备，所述处理电路还被配置为：
    基于确定的预编码矩阵，生成预编码矩阵索引以发送至所述第一通信设备。
  15. 一种通信***中的通信方法，所述通信***包括基站、由第一通信设备和第二通信设备组成的第一组通信设备、以及由第三通信设备和第四通信设备组成的第二组通信设备，所述方法包括：
    由所述第一组通信设备中的第一通信设备向所述基站报告波形参数，所述波形参数与所述第一通信设备所发送的信号波形的形成有关；
    由所述第一组通信设备中的第二通信设备向所述基站报告由所述第二通信设备估计的信道状态信息；
    由所述基站将从所述第一组通信设备获取的波形参数和信道状态信息通知给所述第二组通信设备中的第四通信设备；
    由所述第四通信设备基于以下内容来确定用于所述第二组通信设备中的第三通信设备的预编码矩阵：所述第三通信设备的波形参数、由所述第四通信设备估计的信道状态信息、以及从所述基站获取的所述第一组通信设备的波形参数和信道状态信息。
  16. 一种通信***中的基站设备，所述基站设备包括处理电路，所述处理电路被配置为：
    基于由所述基站设备服务的第一终端设备的第一波形参数和由相邻基站服务的第二终端设备的第二波形参数来确定将由所述第一终端设备使用的预编码矩阵，
    其中，所述第一波形参数与所述第一终端设备所发送的信号波形的形成有关，所述第二波形参数与所述第二终端设备所发送的信号波形的形成有关。
  17. 根据权利要求16所述的基站设备，所述处理电路还被配置为：
    估计信道状态信息；
    基于所估计的信道状态信息以及由所述相邻基站估计的信道状态信息，来确定将由所述第一终端设备使用的预编码矩阵。
  18. 根据权利要求17所述的基站设备，其中，由所述处理电路估计 的信道状态信息包括所述第一终端设备与所述基站设备之间的信道的信道状态信息，以及所述第二终端设备与所述基站设备之间的信道的信道状态信息。
  19. 根据权利要求16或17所述的基站设备，所述处理电路还被配置为：
    基于确定的预编码矩阵，生成预编码矩阵索引以发送至所述第一终端设备，
    其中，所述预编码矩阵用于对所述第一终端设备将要发送的信号进行预编码，以用于干扰消除。
  20. 根据权利要求16所述的基站设备，所述处理电路还被配置为：将所述第一终端设备的所述第一波形参数通知给由所述基站设备管理的一组通信设备中的第二通信设备，以使得所述第二通信设备能够基于所述第一波形参数来确定将由所述一组通信设备中的第一通信设备使用的预编码矩阵。
  21. 根据权利要求20所述的基站设备，所述处理电路还被配置为：
    向所述第一终端设备和所述一组通信设备分配与所述相邻基站分配给所述第二终端设备的通信资源相同的通信资源；
    指示所述第一终端设备报告所述第一波形参数；
    指示所述第一通信设备向所述第二通信设备发送所述第一通信设备的波形参数。
  22. 一组通信设备中的第二通信设备，所述一组通信设备包括互相通信的第一通信设备和所述第二通信设备，所述第二通信设备包括处理电路，所述处理电路被配置为：
    基于所述第一通信设备的第一波形参数以及从基站获取的由所述基站服务的终端设备的第二波形参数，来确定将由所述第一通信设备使用的预编码矩阵，
    其中，所述第一波形参数与所述第一通信设备所发送的信号波形的形成有关，所述第二波形参数与所述终端设备所发送的信号波形的形成有关。
  23. 根据权利要求22所述的第二通信设备，所述处理电路还被配置为：估计所述第一通信设备与所述第二通信设备之间的信道的信道状态信息，以及估计所述终端设备与所述第二通信设备之间的信道的信道状态信息。
  24. 根据权利要求23所述的第二通信设备，所述处理电路还被配置为：基于所估计的信道状态信息来确定将由所述第一通信设备使用的预编码矩阵。
  25. 一种通信***中的通信方法，所述方法包括：
    由基站获取所述基站所服务的第一终端设备的第一波形参数；
    由所述基站从相邻基站获取所述相邻基站所服务的第二终端设备的第二波形参数；
    由所述基站基于所述第一波形参数和所述第二波形参数来确定将由所述第一终端设备使用的预编码矩阵，
    其中，所述第一波形参数与所述第一终端设备所发送的信号波形的形成有关，所述第二波形参数与所述第二终端设备所发送的信号波形的形成有关。
  26. 根据权利要求25所述的通信方法，还包括：
    由所述基站估计信道状态信息；
    由所述基站从所述相邻基站获取由所述相邻基站估计的信道状态信息；
    由所述基站基于所估计的信道状态信息以及所获取的信道状态信息，来确定将由所述第一终端设备使用的预编码矩阵。
  27. 根据权利要求25或26所述的通信方法，还包括：
    由所述基站将所述第一终端设备的所述第一波形参数发送至由所述基站管理的一组通信设备中的第二通信设备；
    由所述第二通信设备获取所述一组通信设备中的第一通信设备的第三波形参数，其中，所述第三波形参数与所述第一通信设备所发送的信号波形的形成有关；
    由所述第二通信设备基于所述第一波形参数和所述第三波形参数，来确定将由所述第一通信设备使用的预编码矩阵。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130078991A1 (en) * 2009-09-23 2013-03-28 Electronics And Telecommunications Research Institute Method and device for managing interference in neighbouring cells having multiple sending and receiving nodes
US20140269409A1 (en) * 2013-03-14 2014-09-18 Telefonaktiebolaget L M Ericsson (Publ) Explicit signaling of number of receiver antennas
CN104717035A (zh) * 2015-02-27 2015-06-17 南京邮电大学 一种基于d2d通信的蜂窝网络的干扰对齐方法
CN105591677A (zh) * 2015-12-23 2016-05-18 中国电子科技集团公司第五十四研究所 一种基于干扰对齐技术的d2d协作多点传输方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011083774A1 (ja) 2010-01-08 2011-07-14 パナソニック株式会社 通信装置及び通信方法
JP5854150B2 (ja) * 2012-09-19 2016-02-09 富士通株式会社 無線通信システム、無線通信装置、及び無線通信システムにおける無線通信方法
CN104935365B (zh) * 2014-03-21 2019-01-01 日本电气株式会社 用于多用户传输的方法和设备
WO2016122437A1 (en) * 2015-01-29 2016-08-04 Intel IP Corporation System and methods for precoded transmissions for narrowband transmissions within wider system bandwidth
CN105991231B (zh) * 2015-02-28 2021-07-30 中兴通讯股份有限公司 获取信道状态信息csi的方法及装置
US10256880B2 (en) * 2015-07-01 2019-04-09 Lg Electronics Inc. Codebook configuration method in multi-antenna wireless communication system and device for same
US10064217B2 (en) 2015-10-16 2018-08-28 Samsung Electronics Co., Ltd. Method and apparatus for enabling flexible numerology in multi-user MIMO system
CN105680925A (zh) * 2016-03-04 2016-06-15 上海师范大学 一种基于干扰对齐的d2d用户的功率控制方法
KR102331127B1 (ko) * 2017-04-25 2021-11-26 삼성전자 주식회사 상향링크 이동통신 시스템을 위한 자원할당 및 프리코딩 방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130078991A1 (en) * 2009-09-23 2013-03-28 Electronics And Telecommunications Research Institute Method and device for managing interference in neighbouring cells having multiple sending and receiving nodes
US20140269409A1 (en) * 2013-03-14 2014-09-18 Telefonaktiebolaget L M Ericsson (Publ) Explicit signaling of number of receiver antennas
CN104717035A (zh) * 2015-02-27 2015-06-17 南京邮电大学 一种基于d2d通信的蜂窝网络的干扰对齐方法
CN105591677A (zh) * 2015-12-23 2016-05-18 中国电子科技集团公司第五十四研究所 一种基于干扰对齐技术的d2d协作多点传输方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3654543A4 *

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