CN110870267B

CN110870267B - Method and device used in user and base station of wireless communication

Info

Publication number: CN110870267B
Application number: CN201780093001.7A
Authority: CN
Inventors: 吴克颖
Original assignee: Nantong Langheng Communication Technology Co ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2022-03-29
Anticipated expiration: 2037-08-11
Also published as: CN110870267A; WO2019028885A1

Abstract

The application discloses a method and a device used in a user and a base station of wireless communication. The user equipment receives a first signaling; a first wireless signal and a second wireless signal are received in a first time-frequency resource. Wherein the target recipient of the second wireless signal is not the user equipment, the transmit powers of the first and second wireless signals are first and second powers, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first and second powers, and a first set of resource particles; the resource particles occupied by the second wireless signal are outside the first set of resource particles; the user equipment also receives a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set. The method can improve the receiving performance of the wireless signal.

Description

Method and device used in user and base station of wireless communication

Technical Field

The present application relates to a method and an apparatus for transmitting a wireless signal in a wireless communication system, and more particularly, to a method and an apparatus for transmitting a wireless signal in a wireless communication system supporting multi-user superposition Transmission (multiusersuperservation Transmission).

Background

In a conventional 3GPP (3rd generation partner Project) cellular system, downlink radio signals of multiple users are multiplexed by one or more of { TDM (Time Division Multiplexing), FDM (Frequency Division Multiplexing), CDM (Code Division Multiplexing) }. A new multiplexing method (RP-150496) is introduced in 3GPP R (Release) 13, that is, a multi-user superposition Transmission (MUST), which essentially distinguishes downlink wireless signals of two users by using different received powers. The two users typically include a near user (with low path loss to the serving base station) and a far user (with high path loss to the serving base station), and the base station allocates a lower transmit power for the first signal for the near user and a higher transmit power for the second signal for the far user. The far user directly demodulates the second signal (i.e. the first signal is treated as noise), while the near user firstly demodulates the second signal (considering that the far user of the near user has lower path loss and the decoding success probability is high), then removes the influence of the second signal from the received signal to obtain a residual signal, and decodes the residual signal to obtain the first signal, which is the SIC (Successive Interference Cancellation) algorithm.

According to the discussion of 3GPP RAN (Radio Access Network ) WG (Working Group) 1, an NR (New Radio, New Radio communication) system will support a reference signal PTRS (Phase error tracking reference signal) for channel Phase tracking.

Disclosure of Invention

The inventor finds that under the MUST transmission, interference exists between the data of the near user and the PTRS of the far user. Such interference may degrade the performance of the near user in estimating the equivalent channel of the far user, and affect the demodulation of the second signal for the far user by the near user, thereby degrading the performance of the near user in receiving the first signal for itself.

In view of the above, the present application discloses a solution. It should be noted that although the initial motivation of the present application is for PTRS under MUST transmission, the present application is also applicable to other transmission schemes and other signals. Without conflict, embodiments and features in embodiments in the user equipment of the present application may be applied to the base station and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

The application discloses a method in a user equipment used for wireless communication, characterized by comprising:

-receiving a first signaling;

-receiving a first wireless signal and a second wireless signal in a first time frequency resource;

wherein a target recipient of the second wireless signal is a communication device other than the user equipment, transmission powers of the first and second wireless signals are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; if the first resource particle set is not an empty set, further comprising:

-receiving a first reference signal in the first set of resource elements;

wherein at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

As an embodiment, the essence of the above method is that the user equipment is a near user operating under a MUST, the first and second radio signals are radio signals for the near and far users, respectively, and the first reference signal comprises a PTRS of the far user. The method has the advantages that the near user is allowed to obtain the configuration information related to the PTRS of the far user, such as occupied time domain resources and frequency domain resources, so that the PTRS of the far user is utilized to carry out more accurate estimation on the equivalent channel experienced by the wireless signal of the far user, and the interference elimination performance of the wireless signal aiming at the far user is improved.

As an embodiment, the resource element is re (resourceelement).

As an embodiment, the resource elements occupy the duration of one multicarrier symbol in the time domain and occupy the bandwidth of one subcarrier in the frequency domain.

As an embodiment, the multicarrier symbol is an OFDM (orthogonal frequency Division Multiplexing) symbol.

As an embodiment, the multicarrier symbol is a DFT-S-OFDM (Discrete Fourier Transform Spread OFDM) symbol.

As an embodiment, the multicarrier symbol is an FBMC (Filter Bank Multi Carrier) symbol.

As one embodiment, the unit of the first power and the second power is W (watts).

As one example, the first power and the second power are both in units of mW (milliwatts).

As an embodiment, the target recipient of the first wireless signal is the user equipment.

As an embodiment, the target recipient of the second wireless signal being a communication device other than the user equipment means: the user equipment does not perform channel coding on the second wireless signal.

As an embodiment, the target recipient of the second wireless signal being a communication device other than the user equipment means: the ue does not receive a second signaling, where the second signaling is used to determine configuration information of a target wireless signal, where the configuration information includes at least one of { MCS (Modulation and Coding Scheme, NDI (New Data Indicator, New Data Indicator)), RV (Redundancy Version), HARQ (Hybrid Automatic Repeat reQuest ) process number, corresponding RS (ReferenceSignals ) port, and corresponding transmitting antenna port }, and the second wireless signal belongs to the target wireless signal.

As an embodiment, the target recipient of the second wireless signal being a communication device other than the user equipment means: the user equipment does not pass the block of bits carried by the second radio signal to higher layers.

As an embodiment, the first signaling and the second signaling are respectively identified by a first integer and a second integer, and the first integer and the second integer are not equal.

As an embodiment, the first integer and the second integer are used to generate scrambling sequences (scrambling sequences) of the first signaling and the second signaling, respectively.

As an embodiment, the first integer is a C-RNTI (Cell-Radio Network Temporary Identifier) of the user equipment.

As one embodiment, the second integer is a C-RNTI of a target recipient of the second wireless signal.

As an embodiment, the transmission power of the first reference signal is the second power.

As an embodiment, the first signaling includes scheduling information of the first wireless signal, where the scheduling information of the first wireless signal includes at least one of { occupied time domain resource, occupied frequency domain resource, MCS, HARQ process number, RV, NDI, corresponding RS port, corresponding transmit antenna port }.

As an embodiment, the first signaling is used to determine a modulation scheme of the second wireless signal.

As an embodiment, the modulation scheme of the second wireless signal is fixed.

In one embodiment, the modulation scheme of the second radio signal is fixed to qpsk (quadrature Phase Shift keying).

For one embodiment, the first set of resource elements is an empty set.

As an embodiment, the first set of resource particles is not an empty set.

As one embodiment, the MCS of the second wireless signal is used to determine whether the first set of resource elements is an empty set.

As an embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine whether the first resource element set is an empty set.

As an embodiment, { MCS of the second radio signal, number of frequency units occupied by the first time-frequency resource in a frequency domain } is used to determine whether the first set of resource elements is an empty set.

As an embodiment, a ratio between the first power and the second power is a non-negative real number not greater than 1.

As an embodiment, the ratio between the first power and the second power is one of K candidate ratios, and the first signaling is used to determine the ratio between the first power and the second power from the K candidate ratios.

As a sub-embodiment of the above embodiment, any one of the K candidate ratios is a non-negative real number not greater than 1.

As one embodiment, the first signaling is used to determine whether the second wireless signal is present.

As an embodiment, the first signaling is used to determine a transmitting antenna port corresponding to the second wireless signal.

As an embodiment, the first signaling is used to determine an RS port corresponding to the second wireless signal.

As an embodiment, a modulation scheme of the second wireless signal is used to determine the first set of resource elements.

As one embodiment, the first signaling is used to determine an MCS of the second wireless signal.

As an embodiment, the first signaling includes a first field, and the first field is used to determine at least one of { whether the second wireless signal exists, a ratio between the first power and the second power, a modulation scheme of the second wireless signal, a transmitting antenna port corresponding to the second wireless signal, and an RS port corresponding to the second wireless signal }.

As a sub-implementation of the foregoing embodiment, the first field indicates at least one of { whether the second radio signal exists, a ratio between the first power and the second power, a modulation scheme of the second radio signal, a transmission antenna port corresponding to the second radio signal, and an RS port corresponding to the second radio signal }.

As a sub-embodiment of the above embodiment, the first field comprises 2 bits.

As a sub-embodiment of the above embodiment, the first field comprises 4 bits.

As a sub-embodiment of the above embodiment, the first field comprises 6 bits.

As a sub-embodiment of the above embodiment, the first field indicates an MCS of the second wireless signal.

As one embodiment, the MCS of the second wireless signal is used to determine the first set of resource elements.

As an embodiment, the { the first time-frequency resource, the modulation scheme of the second radio signal } is used to determine the first set of resource elements.

As an embodiment, { the first time-frequency resource, MCS of the second radio signal } is used to determine the first set of resource elements.

As an embodiment, a relationship between { the first time/frequency resource, the modulation scheme of the second radio signal } and the first resource element set is configured in advance.

As an embodiment, a relationship between { the first time/frequency resource, the modulation scheme of the second radio signal } and the first resource element set is fixed (does not need to be configured).

As an embodiment, a relationship between { the first time-frequency resource, the MCS of the second radio signal } and the first resource element set is pre-configured.

As an embodiment, the relationship between { the first time-frequency resource, the MCS of the second radio signal } and the first resource element set is fixed (does not need to be configured).

As one embodiment, the first signaling includes a second domain, which is used to determine the first time-frequency resource.

As a sub-embodiment of the above embodiment, the second field comprises a positive integer number of bits.

As one embodiment, the first wireless signal and the second wireless signal are transmitted by the same M1 antenna ports, the M1 being a positive integer.

As an embodiment, the first wireless signal is transmitted by M2 antenna ports, the second wireless signal is transmitted by M3 antenna ports, and the M2 and the M3 are positive integers, respectively.

As a sub-embodiment of the foregoing embodiment, at least one of the M2 antenna ports is different from any of the M3 antenna ports.

As a sub-embodiment of the above-mentioned embodiment, at least one of the M2 antenna ports is the same as one of the M3 antenna ports.

As a sub-embodiment of the above-described embodiments, any one of the M2 antenna ports and any one of the M3 antenna ports are not identical.

As a sub-embodiment of the above embodiment, the M2 antenna ports are a subset of the M3 antenna ports, and the M2 is smaller than the M3.

As a sub-embodiment of the above embodiment, the M3 antenna ports are a subset of the M2 antenna ports, the M2 is greater than the M3.

As a sub-embodiment of the above embodiment, the M2 is not equal to the M3.

As a sub-embodiment of the above embodiment, the M2 is equal to the M3.

As an embodiment, the first signaling is dynamic signaling.

As an embodiment, the first signaling is physical layer signaling.

As an embodiment, the first signaling is dynamic signaling for DownLink Grant (DownLink Grant).

As an embodiment, an antenna port is formed by superimposing a plurality of antennas through antenna Virtualization (Virtualization), and mapping coefficients of the plurality of antennas to the antenna port form a beamforming vector of the antenna port.

As a sub-embodiment of the above embodiment, the beamforming vector corresponding to one antenna port is formed by Kronecker product of one analog beamforming vector and one digital beamforming vector.

As an embodiment, the two antenna ports are not identical means that: the two antenna ports correspond to different beamforming vectors.

As an embodiment, the two antenna ports are not identical means that: small-scale characteristics of a channel experienced by a wireless signal transmitted on one antenna port cannot be inferred from small-scale characteristics of a channel experienced by a wireless signal transmitted on another antenna port.

As a sub-embodiment of the foregoing embodiment, the small scale characteristic includes a channel impulse response.

As an embodiment, the first antenna port being associated to the second antenna port means: the first antenna port and the second antenna port are the same antenna port.

As an embodiment, the first antenna port being associated to the second antenna port means: the first antenna port and the second antenna port correspond to the same beamforming vector.

As an embodiment, the first antenna port being associated to the second antenna port means: the first antenna port and the second antenna port are QCL (Quasi Co-Located).

As an embodiment, two antenna ports are QCL means: the large-scale characteristics of the channel experienced by a radio signal transmitted on one antenna port can be inferred from the large-scale characteristics (properties) of the channel experienced by a radio signal transmitted on another antenna port. The large-scale characteristics include one or more of { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay), angle of arrival (angle of arrival), angle of departure (angle of departure), spatial correlation }.

As an embodiment, two antenna ports are QCL means: the two antenna ports correspond to the same analog beamforming vector.

As an embodiment, two antenna ports being of the QCL means: the user equipment may receive the wireless signals transmitted on the two antenna ports with the same beamforming vector.

As an embodiment, two antenna ports being of the QCL means: the user equipment may receive the wireless signals transmitted on the two antenna ports with the same analog beamforming vector.

As an embodiment, two antenna ports being of the QCL means: the user equipment may receive the wireless signals transmitted on the two antenna ports with the same spatial filtering.

As an embodiment, at least one antenna port for transmitting said first reference signal is associated with { one antenna port for transmitting said first wireless signal, one antenna port for transmitting said second wireless signal }.

As an embodiment, any antenna port used for transmitting the first reference signal is associated with { one antenna port used for transmitting the first wireless signal, one antenna port used for transmitting the second wireless signal }.

As an embodiment, at least one antenna port for transmitting said first reference signal is associated to one antenna port for transmitting said second radio signal.

As an embodiment, any antenna port used for transmitting the first reference signal is associated to one antenna port used for transmitting the second radio signal.

As an embodiment, any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal.

As an embodiment, the first antenna port not being associated to the second antenna port means: the first antenna port and the second antenna port are not the same antenna port.

As an embodiment, the first antenna port not being associated to the second antenna port means: the first antenna port and the second antenna port correspond to different beamforming vectors.

As an embodiment, the first antenna port not being associated to the second antenna port means: the first antenna port and the second antenna port are not QCL.

As an embodiment, the first Reference Signal includes one of { CSI-RS (Channel State Information-Reference Signal), DMRS (DeModulation Reference Signals), TRS (fine/frequency tracking Reference Signals), TRS (Phase error tracking Reference Signals) }.

As one embodiment, the first reference signal includes a PTRS.

As an embodiment, the first time-frequency resource includes a positive integer number of consecutive time units in a time domain.

As an embodiment, the first time-frequency resource includes a positive integer number of discontinuous time units in a time domain.

As an embodiment, the time unit is the duration of one multicarrier symbol.

As one embodiment, the time unit is one sub-frame.

As an embodiment, the time unit is a slot (slot).

As one example, the time unit is 1 millisecond (ms).

As an embodiment, the first time-frequency resource includes a positive integer number of consecutive frequency units in a frequency domain.

As an embodiment, the first time-frequency resource includes a positive integer number of discontinuous frequency units in a frequency domain.

As an embodiment, the frequency unit is a bandwidth occupied by one subcarrier.

As an embodiment, the frequency unit is one RB (Resource Block).

As an embodiment, the frequency unit is a PRB (Physical Resource Block).

As an embodiment, the first set of resource elements includes a positive integer number of consecutive time units in the time domain.

As one embodiment, the first set of resource elements includes a positive integer number of non-contiguous time units in the time domain.

As an embodiment, the first set of resource elements comprises a positive integer number of consecutive frequency units in the frequency domain.

As an embodiment, the first set of resource elements comprises a positive integer number of discontinuous frequency units in the frequency domain.

As an embodiment, the first set of resource elements includes a positive integer number of consecutive multicarrier symbols in the time domain.

As one embodiment, the first set of resource elements includes a positive integer number of non-contiguous multicarrier symbols in the time domain.

As an embodiment, the first set of resource elements includes a positive integer number of consecutive subcarriers in the frequency domain.

As an embodiment, the first set of resource elements includes a positive integer number of non-contiguous subcarriers in the frequency domain.

As an embodiment, the set of resource elements in the first time-frequency resource that do not belong to the first set of resource elements is not an empty set.

As an embodiment, the first wireless signal includes downlink data.

As one embodiment, the second wireless signal includes downlink data.

As an embodiment, the first wireless signal and the second wireless signal are respectively transmitted on a downlink physical layer data channel (i.e. a downlink channel capable of carrying physical layer data).

As an embodiment, the first signaling is transmitted on a downlink physical layer control channel (i.e. a downlink channel that can only be used to carry physical layer signaling).

According to an aspect of the application, the first signaling is used for determining whether the first radio signal occupies the first set of resource elements.

According to an aspect of the application, the first radio signal occupies resource elements outside the first set of resource elements.

As an embodiment, the above method has the advantage of avoiding interference between the first radio signal and the first reference signal, so that the ue can perform more accurate estimation on the equivalent channel experienced by the second radio signal, and the performance of interference cancellation on the second radio signal is improved, thereby improving the reception performance of the first radio signal. While also improving the accuracy of the channel estimate for the intended recipient of the second wireless signal.

As an embodiment, the first signaling is used to determine whether at least one antenna port used for transmitting the first reference signal is associated to at least one antenna port used for transmitting the first wireless signal.

As an embodiment, the first wireless signal occupies resource elements outside the first set of resource elements if at least one antenna port for transmitting the first reference signal is associated to at least one antenna port for transmitting the first wireless signal.

As an embodiment, the first wireless signal occupies the first set of resource elements if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal.

As an embodiment, the first signaling is used to determine whether the first wireless signal occupies the first set of resource elements if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal.

As an embodiment, if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal, a ratio between the first power and the second power is used for determining whether the first wireless signal occupies the first set of resource elements.

As an embodiment, the above method has the advantage that, according to the possible interference strength between the first wireless signal and the first reference signal, dynamically deciding whether to avoid the interference between the first wireless signal and the first reference signal is required, and a better compromise is achieved between the receiving performance and the utilization rate of wireless resources.

As an embodiment, if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal and the ratio between the first power and the second power is smaller than a first threshold, the first wireless signal occupies the first set of resource elements; the first radio signal occupies resource elements outside the first set of resource elements if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first radio signal and the ratio between the first power and the second power is greater than or equal to the first threshold. The first threshold is a positive real number.

As a sub-embodiment of the above embodiment, the first threshold is preconfigured.

As a sub-embodiment of the above-mentioned embodiment, the first threshold value is related to at least one of { MCS of the first radio signal, MCS of the second radio signal, modulation scheme of the first radio signal, modulation scheme of the second radio signal }.

As an embodiment, if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal and a ratio between the first power and the second power is greater than a fourth threshold, the first wireless signal occupies the first set of resource elements; the first radio signal occupies resource elements outside the first set of resource elements if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first radio signal and the ratio between the first power and the second power is less than or equal to the fourth threshold. The fourth threshold is a positive real number.

As a sub-embodiment of the above embodiment, the fourth threshold is preconfigured.

As a sub-embodiment of the above-mentioned embodiment, the fourth threshold value is related to at least one of { MCS of the first radio signal, MCS of the second radio signal, modulation scheme of the first radio signal, modulation scheme of the second radio signal }.

As an embodiment, the first signaling is used to determine whether at least one antenna port used to transmit the first wireless signal and at least one antenna port used to transmit the second wireless signal are the same.

As an embodiment, if at least one antenna port for transmitting the first wireless signal and at least one antenna port for transmitting the second wireless signal are the same, the at least one antenna port for transmitting the first reference signal is associated to the at least one antenna port for transmitting the first wireless signal.

As an embodiment, if any antenna port for transmitting the first wireless signal and any antenna port for transmitting the second wireless signal are not the same, any antenna port for transmitting the first reference signal is not associated to any antenna port for transmitting the first wireless signal.

According to an aspect of the application, it is characterized in that the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of the resource particles in the first set of resource particles in the frequency domain.

As an embodiment, the frequency unit is a bandwidth occupied by one subcarrier.

As an embodiment, the frequency unit is one RB.

As an embodiment, the frequency unit is one PRB.

As an embodiment, the frequency unit is a bandwidth occupied by a positive integer number of consecutive subcarriers.

As an embodiment, the frequency unit consists of a positive integer number of consecutive subcarriers.

As an embodiment, if the number of frequency units occupied by the first time-frequency resource in the frequency domain is W1, the density of the resource particles in the first set of resource particles in the frequency domain is FD 1; if the number of frequency units occupied by the first time-frequency resource in the frequency domain is W2, the density of the resource particles in the first set of resource particles in the frequency domain is FD 2; the W1 and the W2 are each positive integers, the FD1 and the FD2 are each non-negative real numbers not greater than 1. The W1 is greater than the W2, the FD1 is greater than or equal to the FD 2.

As an embodiment, the density of the resource elements in the first set of resource elements in the frequency domain is one of the V1 first densities. The number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of the resource elements in the first set of resource elements in the frequency domain from the V1 first densities. The V1 is a positive integer, any one of the V1 first densities is a non-negative real number not greater than 1.

As a sub-embodiment of the above embodiment, the V1 first densities are fixed (not necessarily configured).

As a sub-embodiment of the above embodiment, the V1 first densities are configured by higher layer signaling.

As a sub-embodiment of the above embodiment, the V1 first densities are configured by RRC signaling.

As a sub-embodiment of the above embodiment, the V1 first densities are cell-common.

As a sub-embodiment of the above embodiment, the smallest first density of the V1 first densities is 0.

As a sub-embodiment of the above embodiment, the V1 first densities are arranged sequentially, the V1 first parameters are arranged sequentially from small to large, and the V1 first parameters are respectively non-negative integers. If the number of frequency units occupied by the first time-frequency resource in the frequency domain is greater than or equal to the V-th first parameter of the V1 first parameters and less than the V + 1-th first parameter of the V1 first parameters, the density of the resource particles in the first resource particle set in the frequency domain is the V-th first density of the V1 first densities. The V is a non-negative integer less than the V1 minus 1. If the number of the frequency units occupied by the first time-frequency resource in the frequency domain is greater than or equal to the V1-1 first parameter of the V1 first parameters, the density of the resource particles in the first resource particle set in the frequency domain is the V1-1 first density of the V1 first densities.

As a reference example of the above sub-embodiment, the V1 first densities are arranged in order from small to large.

As a reference example of the above sub-embodiment, any two first parameters of the V1 first parameters are not equal.

As a reference example of the above sub-embodiment, the V1 first parameters are fixed (do not need to be configured).

As a reference example of the above sub-embodiments, the V1 first parameters are configured by higher layer signaling.

As a reference example of the foregoing sub-embodiments, the V1 first parameters are configured by RRC (Radio Resource Control) signaling.

As a reference example of the above sub-embodiment, the V1 first parameters are cell-common.

As a reference example of the foregoing sub-embodiments, the V1 first parameters are UE-specific (UE-specific).

As a reference example of the above-described sub-embodiments, the smallest first parameter of the V1 first parameters is 0.

As an embodiment, a modulation scheme of the second wireless signal is used to determine a density of resource particles in the first set of resource particles in a time domain.

As one embodiment, the MCS of the second wireless signal is used to determine a density in a time domain of resource elements in the first set of resource elements.

As an embodiment, if the MCS of the second wireless signal is T1, the density of the resource elements in the first set of resource elements in the time domain is TD 1; if the MCS of the second wireless signal is T2, the density of the resource elements in the first set of resource elements in the time domain is TD 2; the T1 and the T2 are respectively non-negative integers, and the TD1 and the TD2 are respectively non-negative real numbers not greater than 1. The T1 is greater than the T2, and the TD1 is greater than or equal to the TD 2.

As one embodiment, the density of the resource particles in the first resource particle set in the time domain is one of V2 second densities. The MCS of the second wireless signal is used to determine a density in the time domain of the resource elements in the first set of resource elements from the V2 second densities. The V2 is a positive integer, any one of the V2 second densities is a non-negative real number not greater than 1.

As a sub-embodiment of the above embodiment, the V2 second densities are fixed (do not need to be configured).

As a sub-embodiment of the above embodiment, the V2 second densities are configured by higher layer signaling.

As a sub-embodiment of the above embodiment, the V2 second densities are configured by RRC signaling.

As a sub-embodiment of the above embodiment, the V2 second densities are cell-common.

As a sub-embodiment of the above embodiment, the smallest second density of the V2 second densities is 0.

As a sub-embodiment of the above embodiment, the V2 second densities are sequentially arranged, the V2 second parameters are sequentially arranged from small to large, and the V2 second parameters are respectively non-negative integers. If the MCS of the second wireless signal is greater than or equal to the xth of the V2 second parameters and less than the xth +1 of the V2 second parameters, the density in the time domain of the resource elements in the first set of resource elements is the xth of the V2 second densities. The x is a non-negative integer less than the V2 minus 1. If the MCS of the second wireless signal is greater than or equal to the V2-1 of the V2 second parameters, the density in the time domain of the resource particles in the first set of resource particles is the V2-1 of the V2 second densities.

As a reference example of the above sub-embodiment, the V2 second densities are arranged in order from small to large.

As a reference example of the above sub-embodiment, any two of the V2 second parameters are not equal.

As a reference example of the above sub-embodiment, the V2 second parameters are fixed (do not need to be configured).

As a reference example of the above sub-embodiments, the V2 second parameters are configured by higher layer signaling.

As a reference example of the above sub-embodiments, the V2 second parameters are configured by RRC signaling.

As a reference example of the above sub-embodiment, the V2 second parameters are cell-common.

As a reference example of the above sub-embodiments, the V2 second parameters are UE-specific (UE-specific).

As a reference example of the above-described sub-embodiment, the smallest second parameter of the V2 second parameters is 0.

As an embodiment, the Modulation scheme of the second wireless signal is one of BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying), 8PSK (Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, and 256 QAM.

As an embodiment, if a modulation order (modulation order) corresponding to a modulation mode of the second wireless signal is P1, the density of the resource elements in the first resource element set in the time domain is TD 3; if the modulation order corresponding to the modulation mode of the second wireless signal is P2, the density of the resource particles in the first resource particle set in the time domain is TD 4; the P1 and the P2 are positive integers, respectively, and the TD3 and the TD4 are non-negative real numbers not greater than 1, respectively. The P1 is greater than the P2, and the TD3 is greater than or equal to the TD 4.

As an embodiment, if at least one of { density of resource particles in the first set of resource particles in frequency domain, density of resource particles in the first set of resource particles in time domain } is 0, the first set of resource particles is combined into an empty set.

As an example, the MCS of a wireless signal refers to the MCS index (MCSindex) to which the wireless signal is assigned.

As an example, the MCS index of a wireless signal is a non-negative integer no greater than 15.

As an example, the MCS index of a wireless signal is a non-negative integer no greater than 31.

According to one aspect of the application, the method is characterized by comprising the following steps:

-determining a second set of resource elements;

wherein the first signaling is used to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource.

According to an aspect of the present application, if the second set of resource elements is not an empty set, further comprising:

-receiving a second reference signal in the second set of resource elements;

wherein at least one antenna port for transmitting the second reference signal is associated to at least one antenna port for transmitting the first wireless signal.

As an embodiment, there is no resource particle belonging to both the first set of resource particles and the second set of resource particles, i.e. the intersection of the first set of resource particles and the second set of resource particles is an empty set.

As an embodiment, the transmission power of the second reference signal is the first power.

As an embodiment, a ratio of the transmission power of the first reference signal to the transmission power of the second reference signal is equal to a ratio of the second power to the first power.

As an embodiment, the transmission power of the second reference signal is the second power.

As one embodiment, the MCS of the first wireless signal is used to determine whether the second set of resource elements is an empty set.

As an embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine whether the second resource element set is an empty set.

As an embodiment, { MCS of the first wireless signal, number of frequency units occupied by the first time-frequency resource in a frequency domain } is used to determine whether the second set of resource elements is an empty set.

As an embodiment, the second set of resource elements is combined as an empty set if at least one antenna port for transmitting the first reference signal is associated to at least one antenna port for transmitting the first wireless signal and a density in a time domain and a density in a frequency domain of resource elements of the first set of resource elements is greater than or equal to a first target density and a second target density, respectively. The first target density is a density of reference signals required by the user equipment to perform phase tracking (phase tracking) in a time domain, and the second target density is a density of reference signals required by the user equipment to perform phase tracking (phase tracking) in a frequency domain.

As an embodiment, if at least one antenna port for transmitting the first reference signal is associated to at least one antenna port for transmitting the first wireless signal, and { the density of resource particles in the first set of resource particles in the time domain is smaller than a first target density, the density of resource particles in the first set of resource particles in the frequency domain is smaller than a second target density } holds, the second set of resource particles is not an empty set. The first target density is a density of reference signals required by the user equipment to perform phase tracking (phase tracking) in a time domain, and the second target density is a density of reference signals required by the user equipment to perform phase tracking (phase tracking) in a frequency domain.

As an embodiment, the second set of resource elements is not an empty set if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal.

As an embodiment, if at least one antenna port for transmitting the first reference signal is associated to at least one antenna port for transmitting the first wireless signal, the second set of resource elements comprises Q1 resource elements; the second set of resource elements comprises Q2 resource elements if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal. The Q1 and the Q2 are each positive integers, the Q1 being less than the Q2.

As an embodiment, the user equipment performs joint channel estimation for the first reference signal and the second reference signal.

As an embodiment, the user equipment performs joint phase tracking (phase tracking) for the first reference signal and the second reference signal.

As an embodiment, the user equipment performs channel estimation for the first reference signal and the second reference signal respectively.

As an embodiment, the user equipment performs phase tracking (phase tracking) for the first reference signal and the second reference signal, respectively.

As an embodiment, the first reference signal and the second reference signal are transmitted by the same positive integer number of antenna ports.

As an embodiment, at least one antenna port used for transmitting the first reference signal and any antenna port used for transmitting the second reference signal are different.

As an embodiment, at least one antenna port for transmitting the first reference signal is the same as one antenna port for transmitting the second reference signal.

As an embodiment, any antenna port used for transmitting the first reference signal and any antenna port used for transmitting the second reference signal are different.

As an embodiment, the second reference signal comprises one of { CSI-RS, DMRS, TRS, PTRS }.

As one embodiment, the second reference signal includes a PTRS.

As an embodiment, the second set of resource elements includes a positive integer number of consecutive time units in the time domain.

As an embodiment, the second set of resource elements includes a positive integer number of non-contiguous time units in the time domain.

As an embodiment, the second set of resource elements comprises a positive integer number of consecutive frequency units in the frequency domain.

As an embodiment, the second set of resource elements comprises a positive integer number of discontinuous frequency units in the frequency domain.

As an embodiment, the second set of resource elements includes a positive integer number of consecutive multicarrier symbols in the time domain.

As an embodiment, the second set of resource elements includes a positive integer number of non-contiguous multicarrier symbols in the time domain.

As an embodiment, the second set of resource elements includes a positive integer number of consecutive subcarriers in the frequency domain.

As an embodiment, the second set of resource elements includes a positive integer number of non-contiguous subcarriers in the frequency domain.

As an embodiment, the set of resource elements in the first time-frequency resource that do not belong to the second set of resource elements is not an empty set.

As an embodiment, the first signaling is used to determine a modulation scheme of the first wireless signal.

As an embodiment, a modulation scheme of the first radio signal is used to determine the second set of resource elements.

As one embodiment, the MCS of the first wireless signal is used to determine the second set of resource elements.

As an embodiment, the { the first time-frequency resource, the modulation scheme of the first radio signal } is used to determine the second set of resource elements.

As an embodiment, { the first time-frequency resource, MCS of the first wireless signal } is used to determine the second set of resource elements.

As an embodiment, a relationship between { the first time/frequency resource, the modulation scheme of the first radio signal } and the second resource element set is configured in advance.

As an example, the relationship between { the first time/frequency resource, the modulation scheme of the first radio signal } and the second resource element set is fixed (does not need to be configured).

As an embodiment, a relationship between { the first time-frequency resource, the MCS of the first wireless signal } and the second resource element set is pre-configured.

As an embodiment, the relationship between { the first time-frequency resource, the MCS of the first wireless signal } and the second resource element set is fixed (does not need to be configured).

As an embodiment, the first signaling is used to determine a third set of resource elements, the third set of resource elements comprising a positive integer number of resource elements, the third set of resource elements belonging to the first time-frequency resource.

As a sub-embodiment of the above embodiment, the { the first set of resource elements, the third set of resource elements } is used to determine the second set of resource elements.

As a sub-embodiment of the above embodiment, the second set of resource elements is composed of resource elements of the third set of resource elements that do not belong to the first set of resource elements.

As a sub-embodiment of the above embodiment, the first set of resource elements and the second set of resource elements constitute the third set of resource elements.

As a sub-embodiment of the above-described embodiment, { the first time-frequency resource, the modulation scheme of the first radio signal }' is used to determine the third resource element set.

As a sub-embodiment of the above-described embodiment, { the first time-frequency resource, MCS of the first wireless signal } is used to determine the third set of resource elements.

As a sub-embodiment of the above-described embodiment, a relationship between { the first time/frequency resource, the modulation scheme of the first radio signal } and the third resource element set is configured in advance.

As a sub-embodiment of the above-described embodiment, a relationship between { the first time/frequency resource, the modulation scheme of the first radio signal } and the third resource element set is fixed (does not need to be arranged).

As a sub-embodiment of the above-described embodiment, a relationship between { the first time/frequency resource, the MCS of the first wireless signal } and the third resource element set is configured in advance.

As a sub-embodiment of the above-described embodiment, a relationship between { the first time-frequency resource, the MCS of the first wireless signal } and the third resource element set is fixed (does not need to be configured).

For one embodiment, the second wireless signal occupies the second set of resource elements.

According to an aspect of the application, the first signaling is used for determining whether the second wireless signal occupies the second set of resource elements.

According to an aspect of the application, the second wireless signal occupies resource elements outside the second set of resource elements.

As an embodiment, the above method has the advantages of avoiding interference between the second radio signal and the second reference signal, improving the accuracy of channel estimation of the user equipment, and also improving the reception performance of the target receiver of the second radio signal on the second radio signal.

As one embodiment, the first signaling indicates whether the second wireless signal occupies the second set of resource elements.

As one embodiment, a ratio between the first power and the second power is used to determine whether the second wireless signal occupies the second set of resource elements.

As an example, if a ratio between the first power and the second power is less than a second threshold, the second wireless signal occupies the second set of resource elements; otherwise the second wireless signal occupies resource particles outside the second set of resource particles. The second threshold is a positive real number.

As a sub-embodiment of the above embodiment, the second threshold is preconfigured.

As a sub-embodiment of the above-mentioned embodiment, the second threshold value is related to at least one of { MCS of the first radio signal, MCS of the second radio signal, modulation scheme of the first radio signal, modulation scheme of the second radio signal }.

As an embodiment, the above method has the advantage that, according to the possible interference strength of the second wireless signal and the second reference signal, dynamically deciding whether to avoid interference between the second wireless signal and the second reference signal is needed, and a better compromise is achieved between reception performance and utilization of wireless resources.

As an example, if a ratio between the first power and the second power is greater than a third threshold, the second wireless signal occupies the second set of resource elements; otherwise the second wireless signal occupies resource particles outside the second set of resource particles. The third threshold is a positive real number.

As a sub-embodiment of the above embodiment, the third threshold is preconfigured.

As a sub-embodiment of the above-mentioned embodiment, the third threshold value is related to at least one of { MCS of the first radio signal, MCS of the second radio signal, modulation scheme of the first radio signal, modulation scheme of the second radio signal }.

According to an aspect of the present application, it is characterized in that the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of the resource particles in the second set of resource particles in the frequency domain.

As an embodiment, if the number of frequency units occupied by the first time-frequency resource in the frequency domain is W1, the density of the resource particles in the second set of resource particles in the frequency domain is FD 3; if the number of frequency units occupied by the first time-frequency resource in the frequency domain is W2, the density of the resource particles in the second set of resource particles in the frequency domain is FD 4; the W1 and the W2 are each positive integers, the FD3 and the FD4 are each non-negative real numbers not greater than 1. The W1 is greater than the W2, the FD3 is greater than or equal to the FD 4.

As an embodiment, the density of the resource elements in the second set of resource elements in the frequency domain is one of the V3 first densities. The number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of the resource elements in the second resource element set in the frequency domain from the V3 first densities. The V3 is a positive integer, any one of the V3 first densities is a non-negative real number not greater than 1.

As a sub-embodiment of the above embodiment, the V3 first densities are fixed (not necessarily configured).

As a sub-embodiment of the above embodiment, the V3 first densities are configured by higher layer signaling.

As a sub-embodiment of the above embodiment, the V3 first densities are configured by RRC signaling.

As a sub-embodiment of the above embodiment, the V3 first densities are cell-common.

As a sub-embodiment of the above embodiment, the smallest first density of the V3 first densities is 0.

As a sub-embodiment of the above embodiment, the V3 first densities are arranged sequentially, the V3 first parameters are arranged sequentially from small to large, and the V3 first parameters are respectively non-negative integers. If the number of frequency units occupied by the first time-frequency resource in the frequency domain is greater than or equal to the w-th first parameter of the V3 first parameters and less than the w + 1-th first parameter of the V3 first parameters, the density of the resource particles in the second resource particle set in the frequency domain is the w-th first density of the V3 first densities. The w is a non-negative integer less than the V3 minus 1. If the number of the frequency units occupied by the first time-frequency resource in the frequency domain is greater than or equal to the V3-1 first parameter of the V3 first parameters, the density of the resource particles in the second resource particle set in the frequency domain is the V3-1 first density of the V3 first densities.

As a reference example of the above sub-embodiment, the V3 first densities are arranged in order from small to large.

As a reference example of the above sub-embodiment, any two first parameters of the V3 first parameters are not equal.

As a reference example of the above sub-embodiment, the V3 first parameters are fixed (do not need to be configured).

As a reference example of the above sub-embodiments, the V3 first parameters are configured by higher layer signaling.

As a reference example of the above sub-embodiments, the V3 first parameters are configured by RRC signaling.

As a reference example of the above sub-embodiment, the V3 first parameters are cell-common.

As a reference example of the above sub-embodiments, the V3 first parameters are UE-specific (UE-specific).

As a reference example of the above-described sub-embodiments, the smallest first parameter of the V3 first parameters is 0.

As an embodiment, at least the former of { the modulation scheme of the first radio signal, the modulation scheme of the second radio signal } is used to determine the density of the resource elements in the second set of resource elements in the time domain.

As an embodiment, at least the former of { MCS of the first wireless signal, MCS of the second wireless signal } is used to determine a density of resource elements in the second set of resource elements in a time domain.

As one embodiment, the MCS of the first wireless signal is used to determine a density of resource elements in the second set of resource elements in the time domain.

As an embodiment, if the MCS of the first wireless signal is T1, the density of the resource elements in the second set of resource elements in the time domain is TD 5; if the MCS of the second wireless signal is T2, the density of resource elements in the second set of resource elements in the time domain is TD 6; the T1 and the T2 are respectively non-negative integers, and the TD5 and the TD6 are respectively non-negative real numbers not greater than 1. The T1 is greater than the T2, and the TD5 is greater than or equal to the TD 6.

As an embodiment, the density of the resource particles in the second resource particle set in the time domain is one of the V4 second densities. The MCS of the first wireless signal is used to determine a density in the time domain of resource elements in the second set of resource elements from the V4 second densities. The V4 is a positive integer, any one of the V4 second densities is a non-negative real number not greater than 1.

As a sub-embodiment of the above embodiment, the V4 second densities are fixed (do not need to be configured).

As a sub-embodiment of the above embodiment, the V4 second densities are configured by higher layer signaling.

As a sub-embodiment of the above embodiment, the V4 second densities are configured by RRC signaling.

As a sub-embodiment of the above embodiment, the V4 second densities are cell-common.

As a sub-embodiment of the above embodiment, the smallest second density of the V4 second densities is 0.

As a sub-embodiment of the above embodiment, the V4 second densities are sequentially arranged, the V4 second parameters are sequentially arranged from small to large, and the V4 second parameters are respectively non-negative integers. If the MCS of the first wireless signal is greater than or equal to the y-th one of the V4 second parameters and less than the y + 1-th one of the V4 second parameters, the density in the time domain of the resource elements in the second set of resource elements is the y-th one of the V4 second densities. The y is a non-negative integer less than the V4 minus 1. If the MCS of the first wireless signal is greater than or equal to the V4-1 of the V4 second parameters, the density of the resource elements in the second set of resource elements in the time domain is the V4-1 of the V4 second densities.

As a reference example of the above sub-embodiment, the V4 second densities are arranged in order from small to large.

As a reference example of the above sub-embodiment, any two of the V4 second parameters are not equal.

As a reference example of the above sub-embodiment, the V4 second parameters are fixed (do not need to be configured).

As a reference example of the above sub-embodiments, the V4 second parameters are configured by higher layer signaling.

As a reference example of the above sub-embodiments, the V4 second parameters are configured by RRC signaling.

As a reference example of the above sub-embodiment, the V4 second parameters are cell-common.

As a reference example of the above sub-embodiments, the V4 second parameters are UE-specific (UE-specific).

As a reference example of the above-described sub-embodiment, the smallest second parameter of the V4 second parameters is 0.

As an embodiment, the modulation scheme of the first wireless signal is used to determine the density of the resource elements in the second set of resource elements in the time domain.

As an embodiment, the modulation scheme of the first wireless signal is one of { BPSK, QPSK, 8PSK, 16QAM, 64QAM, 256QAM }.

As an embodiment, if a modulation order (modulation order) corresponding to a modulation scheme of the first radio signal is P1, the density of the resource elements in the second resource element set in the time domain is TD 7; if the modulation order corresponding to the modulation mode of the first wireless signal is P2, the density of the resource elements in the second resource element set in the time domain is TD 8; the P1 and the P2 are positive integers, respectively, and the TD7 and the TD8 are non-negative real numbers not greater than 1, respectively. The P1 is greater than the P2, and the TD7 is greater than or equal to the TD 8.

As an embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource particles in the third set of resource particles in the frequency domain.

As an embodiment, if the number of frequency units occupied by the first time-frequency resource in the frequency domain is W1, the density of the resource elements in the third set of resource elements in the frequency domain is FD 5; if the number of frequency units occupied by the first time-frequency resource in the frequency domain is W2, the density of the resource particles in the third set of resource particles in the frequency domain is FD 6; the W1 and the W2 are each positive integers, the FD5 and the FD6 are each non-negative real numbers not greater than 1. The W1 is greater than the W2, the FD5 is greater than or equal to the FD 6.

As an embodiment, the density of the resource elements in the third set of resource elements in the frequency domain is one of the V5 first densities. The number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of the resource elements in the third resource element set in the frequency domain from the V5 first densities. The V5 is a positive integer, any one of the V5 first densities is a non-negative real number not greater than 1.

As a sub-embodiment of the above embodiment, the V5 first densities are fixed (not necessarily configured).

As a sub-embodiment of the above embodiment, the V5 first densities are configured by higher layer signaling.

As a sub-embodiment of the above embodiment, the V5 first densities are configured by RRC signaling.

As a sub-embodiment of the above embodiment, the V5 first densities are cell-common.

As a sub-embodiment of the above embodiment, the smallest first density of the V5 first densities is 0.

As a sub-embodiment of the above embodiment, the V5 first densities are arranged sequentially, the V5 first parameters are arranged sequentially from small to large, and the V5 first parameters are respectively non-negative integers. If the number of frequency units occupied by the first time-frequency resource in the frequency domain is greater than or equal to the u-th first parameter of the V5 first parameters and less than the u + 1-th first parameter of the V5 first parameters, the density of the resource elements in the third set of resource elements in the frequency domain is the u-th first density of the V5 first densities. The u is a non-negative integer less than the V5 minus 1. If the number of the frequency units occupied by the first time-frequency resource in the frequency domain is greater than or equal to the V5-1 first parameter of the V5 first parameters, the density of the resource particles in the third resource particle set in the frequency domain is the V5-1 first density of the V5 first densities.

As a reference example of the above sub-embodiment, the V5 first densities are arranged in order from small to large.

As a reference example of the above sub-embodiment, any two first parameters of the V5 first parameters are not equal.

As a reference example of the above sub-embodiment, the V5 first parameters are fixed (do not need to be configured).

As a reference example of the above sub-embodiments, the V5 first parameters are configured by higher layer signaling.

As a reference example of the above sub-embodiments, the V5 first parameters are configured by RRC signaling.

As a reference example of the above sub-embodiment, the V5 first parameters are cell-common.

As a reference example of the above sub-embodiments, the V5 first parameters are UE-specific (UE-specific).

As a reference example of the above-described sub-embodiments, the smallest first parameter of the V5 first parameters is 0.

As one embodiment, the MCS of the first wireless signal is used to determine a density of resource elements in the third set of resource elements in a time domain.

As an embodiment, if the MCS of the first wireless signal is T1, the density of the resource elements in the third set of resource elements in the time domain is TD 9; if the MCS of the first wireless signal is T2, the density of the resource elements in the third set of resource elements in the time domain is TD 10; the T1 and the T2 are respectively non-negative integers, and the TD9 and the TD10 are respectively non-negative real numbers not greater than 1. The T1 is greater than the T2, and the TD9 is greater than or equal to the TD 10.

As an embodiment, the density of the resource particles in the third resource particle set in the time domain is one of the V6 second densities. The MCS of the first wireless signal is used to determine a density in the time domain of the resource elements in the third set of resource elements from the V6 second densities. The V6 is a positive integer, any one of the V6 second densities is a non-negative real number not greater than 1.

As a sub-embodiment of the above embodiment, the V6 second densities are fixed (do not need to be configured).

As a sub-embodiment of the above embodiment, the V6 second densities are configured by higher layer signaling.

As a sub-embodiment of the above embodiment, the V6 second densities are configured by RRC signaling.

As a sub-embodiment of the above embodiment, the V6 second densities are cell-common.

As a sub-embodiment of the above embodiment, the smallest second density of the V6 second densities is 0.

As a sub-embodiment of the above embodiment, the V6 second densities are sequentially arranged, the V6 second parameters are sequentially arranged from small to large, and the V6 second parameters are respectively non-negative integers. If the MCS of the first wireless signal is greater than or equal to the z-th of the V6 second parameters and less than the z + 1-th of the V6 second parameters, the density in the time domain of the resource elements in the third set of resource elements is the z-th of the V6 second densities. The z is a non-negative integer less than the V6 minus 1. If the MCS of the first wireless signal is greater than or equal to the V6-1 of the V6 second parameters, the density of the resource elements in the third set of resource elements in the time domain is the V6-1 of the V6 second densities.

As a reference example of the above sub-embodiment, the V6 second densities are arranged in order from small to large.

As a reference example of the above sub-embodiment, any two of the V6 second parameters are not equal.

As a reference example of the above sub-embodiment, the V6 second parameters are fixed (do not need to be configured).

As a reference example of the above sub-embodiments, the V6 second parameters are configured by higher layer signaling.

As a reference example of the above sub-embodiments, the V6 second parameters are configured by RRC signaling.

As a reference example of the above sub-embodiment, the V6 second parameters are cell-common.

As a reference example of the above sub-embodiments, the V6 second parameters are UE-specific (UE-specific).

As a reference example of the above-described sub-embodiment, the smallest second parameter of the V6 second parameters is 0.

As an embodiment, the modulation scheme of the first radio signal is used to determine the density of the resource elements in the third set of resource elements in the time domain.

As an embodiment, if the modulation order (modulation order) corresponding to the modulation scheme of the first radio signal is P1, the density of the resource elements in the third resource element set in the time domain is TD 11; if the modulation order corresponding to the modulation mode of the first wireless signal is P2, the density of the resource elements in the third set of resource elements in the time domain is TD 12; the P1 and the P2 are positive integers, respectively, and the TD11 and the TD12 are non-negative real numbers not greater than 1, respectively. The P1 is greater than the P2, and the TD11 is greater than or equal to the TD 12.

As an embodiment, the density of resource particles in the second set of resource particles in the frequency domain is equal to the density of resource particles in the first set of resource particles in the frequency domain.

As an embodiment, the density in the time domain of the resource particles in the second set of resource particles is equal to the density in the time domain of the resource particles in the third set of resource particles minus the density in the time domain of the resource particles in the first set of resource particles.

As an embodiment, the density in the time domain of the resource particles in the second set of resource particles is equal to the density in the time domain of the resource particles in the first set of resource particles.

As an embodiment, the density of the resource particles in the second set of resource particles in the frequency domain is equal to the density of the resource particles in the third set of resource particles in the frequency domain minus the density of the resource particles in the first set of resource particles in the frequency domain.

As an embodiment, if at least one of { density of resource particles in the second set of resource particles in frequency domain, density of resource particles in the second set of resource particles in time domain } is 0, the second set of resource particles is combined as an empty set.

According to an aspect of the present application, the user equipment performs interference cancellation on the second wireless signal in the first time-frequency resource.

As an embodiment, if the second radio signal occupies the second set of resource elements, the user equipment performs interference cancellation on the second radio signal in the second set of resource elements.

As an embodiment, the Interference Cancellation is SIC (Successive Interference Cancellation).

As an embodiment, the interference cancellation refers to: the user equipment recovers the second wireless signal from the wireless signal received in the first time-frequency resource, and then removes the influence of the second wireless signal from the wireless signal received in the first time-frequency resource to obtain a residual signal.

As a sub-embodiment of the above embodiment, the user equipment recovers the first radio signal from the residual signal.

As an embodiment, the interference cancellation refers to: the user equipment demodulates the second wireless signal to obtain a first recovery symbol block; the effect of the first recovered symbol block is then subtracted from the received wireless signal in the first time-frequency resource to obtain a residual signal.

As an embodiment, the interference cancellation refers to: the user equipment carries out channel estimation aiming at a first given reference signal to obtain a first channel matrix; demodulating the second wireless signal to obtain a first recovery symbol block; the product of the first channel matrix and the first recovered symbol block is then subtracted from the received wireless signal in the first time-frequency resource to obtain a residual signal.

As a sub-embodiment of the above-described embodiment, the first given reference signal and the second radio signal are transmitted by the same positive integer number of antenna ports.

As a sub-embodiment of the above embodiment, the first given reference signal comprises at least one of { DMRS, PTRS, TRS }.

As a sub-embodiment of the above-mentioned embodiments, the first given reference signal comprises the first reference signal.

As an embodiment, the interference cancellation refers to: the user equipment demodulates and decodes the second wireless signal to obtain a first recovery bit block; then coding and modulating the first recovery bit block by using the MCS corresponding to the second wireless signal to obtain a second recovery symbol block; the effect of the second recovered symbol block is then subtracted from the received wireless signal in the first time-frequency resource to obtain a residual signal.

As an embodiment, the interference cancellation refers to: the user equipment carries out channel estimation aiming at a first given reference signal to obtain a first channel matrix; demodulating and decoding the second wireless signal to obtain a first recovery bit block; then coding and modulating the first recovery bit block by using the MCS corresponding to the second wireless signal to obtain a second recovery symbol block; the user equipment then subtracts the product of the first channel matrix and the second recovered symbol block from the received wireless signal in the first time-frequency resource to obtain a residual signal.

As an embodiment, the interference cancellation refers to: the user equipment demodulates the second wireless signal to obtain a first recovery symbol block; the first wireless signal is then demodulated using the first recovered symbol block.

As an embodiment, the interference cancellation refers to: the user equipment demodulates and decodes the second wireless signal to obtain a first recovery bit block; the first wireless signal is then demodulated using the first recovered bit block.

The application discloses a method in a base station used for wireless communication, characterized by comprising:

-transmitting first signalling;

-transmitting a first wireless signal and a second wireless signal in a first time-frequency resource;

wherein a target recipient of the first wireless signal and a target recipient of the second wireless signal are different communication devices, transmission powers of the first wireless signal and the second wireless signal are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; if the first resource particle set is not an empty set, further comprising:

-transmitting a first reference signal in the first set of resource elements;

As an embodiment, the target recipient of the first wireless signal and the target recipient of the second wireless signal are different communication devices means: the intended recipient of the second wireless signal does not perform demodulation and channel coding on the first wireless signal.

As an embodiment, the target recipient of the first wireless signal and the target recipient of the second wireless signal are different communication devices means: the intended recipient of the second wireless signal does not receive the first signaling.

-determining a second set of resource elements;

-transmitting a second reference signal in the second set of resource elements;

According to one aspect of the present application, the base station superimposes the first wireless signal and the second wireless signal, and then transmits the superimposed signal in the first time-frequency resource.

As an embodiment, the superposition means that the first symbol block and the second symbol block are weighted and then added to obtain a first superposed symbol block; the first superimposed symbol block is used to generate a superimposed wireless signal, which is transmitted in the first time-frequency resource. The first symbol block and the second symbol block are respectively generated by a first bit block and a second bit block after channel coding (channelization) and a Modulation Mapper (Modulation Mapper) in sequence, the first wireless signal carries the first bit block, and the second wireless signal carries the second bit block. The first bit block and the second bit block each comprise a positive integer number of bits; the weighting coefficients used for the weighting are all positive real numbers.

As a sub-embodiment of the above-mentioned embodiment, the superimposed wireless signal is the superimposed signal.

As a sub-embodiment of the above embodiment, the superimposed wireless signal is output after the first superimposed symbol block sequentially passes through a layer mapper, a precoding, a resource element mapper, and a multi-carrier symbol generation.

As a sub-embodiment of the foregoing embodiment, the superimposed wireless signal is output after the first superimposed symbol block sequentially passes through a layer mapper, a conversion precoder, a precoding, a resource element mapper, and a multicarrier symbol generation.

As an embodiment, the superposition means that the third bit block and the fourth bit block are input to the same modulation mapper (modulation mapper), and the output of the modulation mapper is used to generate a superposed radio signal, which is transmitted in the first time-frequency resource. The third bit block and the fourth bit block are generated after a first bit block and a second bit block are subjected to channel coding respectively, the first wireless signal carries the first bit block, and the second wireless signal carries the second bit block. The first and second bit blocks each include a positive integer number of bits.

As a sub-embodiment of the above embodiment, the superimposed radio signal is output after the output of the modulation mapper sequentially passes through a layer mapper, a precoding, a resource element mapper, and a multi-carrier symbol generation.

As a sub-embodiment of the above embodiment, the superimposed radio signal is output after the output of the modulation mapper sequentially passes through a layer mapper, a conversion precoder, a precoding, a resource element mapper, and a multi-carrier symbol generation.

As an embodiment, the superposition means that the third symbol block and the fourth symbol block are weighted and then added to obtain a second superposed symbol block; the second superimposed symbol block is used to generate a superimposed wireless signal, which is transmitted in the first time-frequency resource. The third symbol block and the fourth symbol are respectively the output of a first bit block and a second bit block after channel coding, modulation Mapper, Layer Mapper (Layer Mapper) and Precoding (Precoding) in sequence; the first wireless signal carries the first bit block and the second wireless signal carries the second bit block. The first and second bit blocks each include a positive integer number of bits.

As a sub-embodiment of the above embodiment, the superimposed radio signal is output after the second superimposed symbol sequentially passes through the resource element mapper and the multi-carrier symbol occurs.

As an embodiment, the superposition means that the fifth symbol block and the sixth symbol block are weighted and then added to obtain a third superposed symbol block; the third superimposed symbol block is used to generate a superimposed wireless signal, which is transmitted in the first time-frequency resource. The fifth symbol block and the sixth symbol block are respectively output after a first bit block and a second bit block are sequentially subjected to channel coding, modulation Mapper, Layer Mapper (Layer Mapper), conversion precoder (transform precoder) and Precoding (Precoding). The first wireless signal carries the first bit block and the second wireless signal carries the second bit block. The first and second bit blocks each include a positive integer number of bits.

As an embodiment, a given wireless signal carrying a given block of bits means: the given wireless signal is an output of the given bit block after channel coding (channelization), Modulation Mapper (Modulation Mapper), Layer Mapper (Layer Mapper), Precoding (Precoding), Resource Element Mapper (Resource Element Mapper), and multi-carrier symbol Generation (Generation) in sequence.

As an embodiment, a given wireless signal carrying a given block of bits means: the given wireless signal is an output of the given bit block after sequentially performing channel coding, modulation mapper, layer mapper, conversion precoder (for generating complex-valued signal), precoding, resource element mapper, and multi-carrier symbol generation.

As an embodiment, a given wireless signal carrying a given block of bits means: the given block of bits is used to generate the given wireless signal.

The application discloses a user equipment used for wireless communication, which is characterized by comprising:

a first receiver module to receive a first signaling;

a second receiver module that receives a first wireless signal and a second wireless signal in a first time-frequency resource;

wherein a target recipient of the second wireless signal is a communication device other than the user equipment, transmission powers of the first and second wireless signals are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; the second receiver module further receives a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set; wherein at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

As an embodiment, the above user equipment for wireless communication is characterized in that the first signaling is used to determine whether the first radio signal occupies the first set of resource elements.

As an embodiment, the above user equipment for wireless communication is characterized in that the first radio signal occupies resource elements other than the first set of resource elements.

As an embodiment, the user equipment configured for wireless communication as described above is characterized in that the second receiver module further determines a second set of resource elements; wherein the first signaling is used to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource.

As an embodiment, the above user equipment used for wireless communication is characterized in that the second receiver module further receives a second reference signal in the second set of resource elements if the second set of resource elements is not an empty set; wherein at least one antenna port for transmitting the second reference signal is associated to at least one antenna port for transmitting the first wireless signal.

As an embodiment, the user equipment used for wireless communication as described above is characterized in that the second radio signal occupies the second set of resource elements.

As an embodiment, the above user equipment for wireless communication is characterized in that the first signaling is used to determine whether the second radio signal occupies the second set of resource elements.

As an embodiment, the user equipment used for wireless communication described above is characterized in that the second radio signal occupies resource elements outside the second set of resource elements.

As an embodiment, the user equipment used for wireless communication is characterized in that the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of the resource particles in the first set of resource particles in the frequency domain.

As an embodiment, the user equipment used for wireless communication is characterized in that the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of the resource particles in the second set of resource particles in the frequency domain.

As an embodiment, the user equipment configured for wireless communication is characterized in that the second receiver module performs interference cancellation on the second wireless signal in the first time-frequency resource.

The application discloses a base station device used for wireless communication, which is characterized by comprising:

the first transmitter module transmits a first signaling;

a second transmitter module that transmits the first wireless signal and the second wireless signal in the first time-frequency resource;

wherein a target recipient of the first wireless signal and a target recipient of the second wireless signal are different communication devices, transmission powers of the first wireless signal and the second wireless signal are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; the second transmitter module further transmits a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set; wherein at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first signaling is used to determine whether the first wireless signal occupies the first set of resource elements.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first wireless signal occupies resource elements other than the first set of resource elements.

As an embodiment, the base station apparatus for wireless communication described above is characterized in that the second transmitter module further determines a second set of resource elements; wherein the first signaling is used to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource.

As an embodiment, the above base station apparatus for wireless communication is characterized in that if the second set of resource elements is not an empty set, the second transmitter module further transmits a second reference signal in the second set of resource elements; wherein at least one antenna port for transmitting the second reference signal is associated to at least one antenna port for transmitting the first wireless signal.

As an embodiment, the base station apparatus for wireless communication described above is characterized in that the second radio signal occupies the second set of resource elements.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first signaling is used to determine whether the second wireless signal occupies the second set of resource elements.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second radio signal occupies resource elements other than the second set of resource elements.

As an embodiment, the above base station device used for wireless communication is characterized in that the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource particles in the first set of resource particles in the frequency domain.

As an embodiment, the above base station device used for wireless communication is characterized in that the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource particles in the second set of resource particles in the frequency domain.

As an embodiment, the base station apparatus used for wireless communication described above is characterized in that the second transmitter module superimposes the first wireless signal and the second wireless signal, and then transmits the superimposed signal in the first time-frequency resource.

As an example, compared with the conventional scheme, the method has the following advantages:

allowing a near user operating in the MUST to obtain configuration information related to the PTRS of a far user, so as to perform more accurate estimation on an equivalent channel experienced by a wireless signal of the far user by using the PTRS of the far user, improve interference cancellation performance on the wireless signal of the far user, and improve reception performance on the wireless signal of the far user.

Interference between the data of the near user and the PTRS of the far user is avoided, enabling the near user to make a more accurate estimation of the equivalent channel experienced by the radio signal of the far user, resulting in a more efficient interference cancellation. Meanwhile, the accuracy of channel estimation of the far user is improved.

And dynamically deciding whether a rate matching or puncturing mode needs to be used for the data of the near user to avoid the interference between the data of the near user and the PTRS of the far user according to the possible interference strength between the data of the near user and the PTRS of the far user, and achieving a better compromise between the receiving performance and the utilization rate of wireless resources.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

fig. 1 shows a flow diagram of first signaling, first wireless signals, second wireless signals, and first reference signals according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

fig. 4 illustrates a schematic diagram of an NR (new radio) node and a UE according to an embodiment of the present application;

FIG. 5 shows a flow diagram of wireless transmission according to one embodiment of the present application;

fig. 6 shows a schematic diagram of a distribution of a first set of resource elements and a second set of resource elements in a first time-frequency resource according to an embodiment of the present application;

fig. 7 shows a schematic diagram of a distribution of a first set of resource elements and a second set of resource elements in a first time-frequency resource according to another embodiment of the present application;

figure 8 shows a schematic diagram of a first signaling according to an embodiment of the present application;

fig. 9 shows a schematic diagram of a relationship between a number of frequency units occupied by a first time-frequency resource in a frequency domain and a density of resource particles in a given set of resource particles in the frequency domain, and a relationship between an MCS of a given wireless signal and a density of resource particles in the given set of resource particles in a time domain, according to an embodiment of the application;

FIG. 10 shows a schematic diagram of a first wireless signal and a second wireless signal superimposed according to an embodiment of the present application;

FIG. 11 shows a schematic diagram of a first wireless signal and a second wireless signal superimposed according to another embodiment of the present application;

fig. 12 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 13 shows a block diagram of a processing device for use in a base station according to an embodiment of the present application.

Example 1

Embodiment 1 illustrates a flowchart of first signaling, a first wireless signal, a second wireless signal, and a first reference signal, as shown in fig. 1. The dashed box in fig. 1 is optional.

In embodiment 1, the ue in this application receives a first signaling first, and then receives a first radio signal and a second radio signal in a first time-frequency resource. Wherein a target recipient of the second wireless signal is a communication device other than the user equipment, transmission powers of the first and second wireless signals are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; the user equipment also receives a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set; wherein at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

As an embodiment, the resource element is re (resourceelement).

As an embodiment, the target recipient of the second wireless signal being a communication device other than the user equipment means: the user equipment does not receive a second signaling, wherein the second signaling is used for determining configuration information of a target wireless signal, the configuration information comprises at least one of { MCS, NDI, RV, HARQ process number, corresponding RS port and corresponding transmitting antenna port }, and the second wireless signal belongs to the target wireless signal.

As an embodiment, the first integer is a C-RNTI of the user equipment.

For one embodiment, the first set of resource elements is an empty set.

As an embodiment, the first set of resource particles is not an empty set.

As an embodiment, any one of the K candidate ratios is a non-negative real number not greater than 1.

As an embodiment, the first signaling includes a first field, where the first field indicates at least one of { whether the second radio signal exists, a ratio between the first power and the second power, a modulation scheme of the second radio signal, a transmission antenna port corresponding to the second radio signal, and an RS port corresponding to the second radio signal }.

As a sub-embodiment of the above embodiment, the first field comprises 2 bits.

As a sub-embodiment of the above embodiment, the first field comprises 4 bits.

As a sub-embodiment of the above embodiment, the first field comprises 6 bits.

As an embodiment, the modulation scheme of the second wireless signal is fixed.

As an embodiment, the modulation scheme of the second wireless signal is fixed to QPSK.

As one embodiment, the first set of resource elements is used to determine the first set of time frequency resources.

As a sub-embodiment of the above embodiment, the M2 is not equal to the M3.

As a sub-embodiment of the above embodiment, the M2 is equal to the M3.

As an embodiment, the first signaling is dynamic signaling.

As an embodiment, the first signaling is physical layer signaling.

As an embodiment, the first reference signal comprises one of { CSI-RS, DMRS, TRS, PTRS }.

As an embodiment, the time unit is the duration of one multicarrier symbol.

As an embodiment, the frequency unit is a bandwidth occupied by one subcarrier.

As an embodiment, the first wireless signal includes downlink data.

As one embodiment, the second wireless signal includes downlink data.

As a sub-embodiment of the foregoing embodiment, the Downlink Physical layer data CHannel is a PDSCH (Physical Downlink Shared CHannel).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer data channel is sPDSCH (short PDSCH).

As a sub-embodiment of the above embodiment, the downlink physical layer data channel is NR-PDSCH (new radio PDSCH).

As a sub-embodiment of the above embodiment, the downlink physical layer data channel is NB-PDSCH (NarrowBand band PDSCH).

As a sub-embodiment of the foregoing embodiment, the downlink Physical layer control CHannel is a PDCCH (Physical downlink control CHannel).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer control channel is an sPDCCH (short PDCCH).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer control channel is an NR-PDCCH (New Radio PDCCH).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer control channel is an NB-PDCCH (narrow band PDCCH).

As an embodiment, the first resource element set is combined into an empty set, and the dashed box does not exist.

As an embodiment, the first set of resource elements is not an empty set, and the dashed box exists.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Fig. 2 illustrates a network architecture 200 of LTE (Long-Term Evolution), LTE-a (Long-Term Evolution Advanced) and future 5G systems. The LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200. The EPS 200 may include one or more UEs (User Equipment) 201, E-UTRAN-NR (Evolved UMTS terrestrial radio access network-new radio) 202, 5G-CN (5G-Core network, 5G Core network)/EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) 220, and internet service 230. The UMTS is compatible with Universal Mobile Telecommunications System (Universal Mobile Telecommunications System). The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown in fig. 2, the EPS provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services. The E-UTRAN-NR includes NR (new radio ) node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an X2 interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5G-CN/EPC210 through an S1 interface. The 5G-CN/EPC210 includes an MME211, other MMEs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213. The MME211 is a control node that handles signaling between the UE201 and the 5G-CN/EPC 210. In general, the MME211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (PSs).

As a sub-embodiment, the UE201 corresponds to the UE in the present application.

As a sub-embodiment, the gNB203 corresponds to the base station in this application.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of radio protocol architecture for the user plane and the control plane, as shown in fig. 3.

Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several protocol layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW213 on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer packets to reduce radio transmission overhead, security by ciphering the packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.

As a sub-embodiment, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.

As a sub-embodiment, the radio protocol architecture in fig. 3 is applicable to the base station in the present application.

As a sub-embodiment, the first signaling in this application is generated in the PHY 301.

As a sub-embodiment, the first wireless signal in the present application is generated in the PHY 301.

As a sub-embodiment, the second wireless signal in the present application is generated in the PHY 301.

As a sub-embodiment, the first reference signal in the present application is generated in the PHY 301.

As a sub-embodiment, the second reference signal in this application is generated in the PHY 301.

Example 4

Embodiment 4 illustrates a schematic diagram of an NR node and a UE as shown in fig. 4. Fig. 4 is a block diagram of a UE450 and a gNB410 in communication with each other in an access network.

gNB410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a modulation mapper 471, a demodulator 472, a transmitter/receiver 418, and an antenna 420.

The UE450 includes a controller/processor 459, memory 460, a data source 467, a transmit processor 468, a receive processor 456, a modulation mapper 457, a demodulator 458, a transmitter/receiver 454, and an antenna 452.

In the DL (Downlink), at the gNB, upper layer data packets from the core network are provided to a controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In the DL, the controller/processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the UE450 based on various priority metrics. Controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to UE 450. The transmit processor 416 and the modulation mapper 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the UE450, and the modulation mapper 471 implements mapping of signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). Transmit processor 416 performs spatial precoding/beamforming on the coded and modulated symbols to generate one or more spatial streams, then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the transmit processor 416 into a radio frequency stream that is then provided to a different antenna 420.

In the DL (Downlink), at the UE450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and demodulator 458 implement the various signal processing functions of the L1 layer. Receive processor 456 converts the baseband multicarrier symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are detected over multiple antennas to recover any spatial streams destined for the UE 450. The symbols for each spatial stream are demodulated and recovered in a demodulator 458 and soft decisions are generated. Receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the gNB410 on the physical channels. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor can be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing. The controller/processor 459 is also responsible for error detection using an Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocol to support HARQ operations.

In the UL (Uplink), at the UE450, a data source 467 is used to provide upper layer data packets to the controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the gNB410 described in the DL, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the gNB410, implementing L2 layer functions for the user plane and the control plane. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the gNB 410. A modulation mapper 457 performs modulation mapping and a transmit processor 468 performs channel coding and multi-antenna spatial precoding/beamforming processing, and then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the transmit processor 468 into a radio frequency symbol stream that is provided to the antenna 452.

In UL (Uplink), the function at the gNB410 is similar to the reception function at the UE450 described in DL. Each receiver 418 receives radio frequency signals through its respective antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a receive processor 470. The receive processor 470 and the demodulator 472 collectively implement the functions of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the UL, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network. Controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocol to support HARQ operations.

As an embodiment, the UE450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor.

As a sub-embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving the first signaling in the present application, receiving the first wireless signal in the present application, receiving the second wireless signal in the present application, determining the first set of resource elements in the present application, receiving the first reference signal in the present application, determining the second set of resource elements in the present application, receiving the second reference signal in the present application, and performing the interference cancellation in the present application.

As a sub-embodiment, the gNB410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor.

As a sub-embodiment, the gNB410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending the first signaling in the present application, sending the first wireless signal in the present application, sending the second wireless signal in the present application, determining the first set of resource elements in the present application, sending the first reference signal in the present application, determining the second set of resource elements in the present application, sending the second reference signal in the present application, and performing superposition between the first wireless signal and the second wireless signal.

As a sub-embodiment, the UE450 corresponds to the UE in this application.

As a sub-embodiment, the gNB410 corresponds to the base station in the present application.

As an embodiment, at least one of { the antenna 452, the receiver 454, the receive processor 456, the demodulator 458, the controller/processor 459} is used for receiving the first signaling; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the modulation mapper 471, the controller/processor 475 is used for sending the first signaling.

As an embodiment, at least one of { the antenna 452, the receiver 454, the receive processor 456, the demodulator 458, the controller/processor 459} is used for receiving the first wireless signal; at least one of the antenna 420, the transmitter 418, the transmission processor 416, the modulation mapper 471, the controller/processor 475 is used to transmit the first wireless signal.

As an embodiment, at least one of { the antenna 452, the receiver 454, the reception processor 456, the demodulator 458, the controller/processor 459} is used for receiving the second wireless signal; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the modulation mapper 471, the controller/processor 475 is used to transmit the second wireless signal.

As an embodiment, at least one of the antenna 452, the receiver 454, the receive processor 456, the demodulator 458, the controller/processor 459 is used to receive the first reference signal; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the modulation mapper 471, the controller/processor 475 is used to transmit the first reference signal.

For one embodiment, at least one of the receive processor 456 and the demodulator 458 is configured to perform the interference cancellation.

As an embodiment, at least one of the transmission processor 416 and the modulation mapper 471 is used to perform superposition between the first wireless signal and the second wireless signal.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, base station N1 is the serving cell maintenance base station for user equipment U2. In fig. 5, the steps in block F1 and block F2, respectively, are optional.

For N1, send the first signaling in step S11; transmitting a first wireless signal and a second wireless signal in a first time-frequency resource in step S12; transmitting a first reference signal in a first set of resource elements in step S101; a second reference signal is transmitted in a second set of resource elements in step S102.

For U2, receiving first signaling in step S21; receiving a first wireless signal and a second wireless signal in a first time-frequency resource in step S22; receiving a first reference signal in a first set of resource elements in step S201; a second reference signal is received in a second set of resource elements in step S202.

In embodiment 5, the target recipient of the second wireless signal is a communication device other than the user equipment, the transmission powers of the first wireless signal and the second wireless signal are a first power and a second power, respectively, and the first signaling is used by the U2 to determine the first time-frequency resource, the ratio between the first power and the second power, and a first resource element set; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }. The first signaling is used by the U2 to determine the second set of resource elements, the second set of resource elements including a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource; at least one antenna port for transmitting the second reference signal is associated to at least one antenna port for transmitting the first wireless signal.

As an embodiment, the resource element is re (resourceelement).

As an embodiment, the first integer and the second integer are used by the N1 and the U2 to generate scrambling sequences (scrambling sequences) of the first signaling and the second signaling, respectively.

For one embodiment, the first set of resource elements is an empty set.

As an embodiment, the first set of resource particles is not an empty set.

As an embodiment, the first signaling is used by the U2 to determine at least one of { whether the second wireless signal exists, a ratio between the first power and the second power, a modulation scheme of the second wireless signal, a transmitting antenna port corresponding to the second wireless signal, an RS port corresponding to the second wireless signal, and an MCS of the second wireless signal }.

As an embodiment, the modulation scheme of the second wireless signal is used by the U2 to determine the first set of resource elements.

As one embodiment, the MCS of the second wireless signal is used by the U2 to determine the first set of resource elements.

For one embodiment, the first time-frequency resource is used by the U2 to determine the first set of resource elements.

As one embodiment, the first reference signal includes a PTRS.

For one embodiment, the first signaling is used by the U2 to determine whether the first wireless signal occupies the first set of resource elements.

As one embodiment, the first wireless signal occupies resource elements outside the first set of resource elements.

As an embodiment, the first signaling is used by the U2 to determine whether at least one antenna port used for transmitting the first reference signal is associated with at least one antenna port used for transmitting the first wireless signal.

As an embodiment, if any antenna port used for transmitting the first reference signal is not associated to any antenna port used for transmitting the first wireless signal, the ratio between the first power and the second power is used by the U2 for determining whether the first wireless signal occupies the first set of resource elements.

As an embodiment, the first signaling is used by the U2 to determine whether at least one antenna port used to transmit the first wireless signal and at least one antenna port used to transmit the second wireless signal are the same.

As an embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used by the U2 to determine the density of resource elements in the first set of resource elements in the frequency domain.

As one embodiment, the MCS of the second wireless signal is used by the U2 to determine a density in the time domain of resource elements in the first set of resource elements.

For one embodiment, the U2 performs joint channel estimation for the first reference signal and the second reference signal.

As one embodiment, the U2 performs joint phase tracking (phase tracking) for the first reference signal and the second reference signal.

As an embodiment, the U2 performs channel estimation for the first reference signal and the second reference signal respectively.

As one embodiment, the U2 performs phase tracking (phase tracking) for the first reference signal and the second reference signal, respectively.

As one embodiment, the second reference signal includes a PTRS.

As an example, at least the former of { the modulation scheme of the first radio signal, the modulation scheme of the second radio signal } is used by the U2 to determine the second resource element set.

As an embodiment, at least the former of the MCS of the first wireless signal, the MCS of the second wireless signal is used by the U2 to determine the second set of resource elements.

For one embodiment, the first time-frequency resource is used by the U2 to determine the second set of resource elements.

As an embodiment, the first signaling is used by the U2 to determine a third set of resource elements, the third set of resource elements comprising a positive integer number of resource elements, the third set of resource elements belonging to the first time-frequency resource.

For one embodiment, the first signaling is used by the U2 to determine whether the second wireless signal occupies the second set of resource elements.

As one embodiment, the second wireless signal occupies resource elements outside the second set of resource elements.

For one embodiment, a ratio between the first power and the second power is used by the U2 to determine whether the second wireless signal occupies the second set of resource elements.

As an embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used by the U2 to determine the density of resource elements in the second set of resource elements in the frequency domain.

As an embodiment, at least the former of { the modulation scheme of the first radio signal, the modulation scheme of the second radio signal } is used by the U2 to determine the density of the resource elements in the second set of resource elements in the time domain.

As an embodiment, at least the former of the MCS of the first wireless signal, the MCS of the second wireless signal is used by the U2 to determine the density of resource elements in the second set of resource elements in the time domain.

As one embodiment, the U2 performs interference cancellation on the second wireless signal in the first time-frequency resource.

As a sub-embodiment of the above embodiment, the Interference Cancellation refers to SIC (Successive Interference Cancellation).

As an embodiment, the N1 superimposes the first wireless signal and the second wireless signal, and then transmits the superimposed signal in the first time-frequency resource.

As an embodiment, time resources occupied by any two of { the first reference signal, the second reference signal, the first wireless signal, the second wireless signal } are partially or completely overlapping.

As an example, the first set of resource elements is an empty set, and the block F1 in fig. 1 does not exist.

As an example, the first set of resource elements is not an empty set, and the block F1 in fig. 1 exists.

As an example, the second set of resource elements is an empty set, and the block F2 in fig. 1 does not exist.

As an example, the second set of resource elements is not an empty set, and the block F2 in fig. 1 exists.

Example 6

Embodiment 6 illustrates a schematic diagram of the distribution of the first resource element set and the second resource element set in the first time-frequency resource, as shown in fig. 6.

In embodiment 6, the first time-frequency resource, the first set of resource elements, and the second set of resource elements each include a positive integer number of resource elements. The first set of resource elements and the second set of resource elements belong to the first time-frequency resource, respectively. The resource particles occupy the duration of one multi-carrier symbol in the time domain and occupy the bandwidth of one sub-carrier in the frequency domain. There is not one resource particle belonging to both the first set of resource particles and the second set of resource particles. At least one antenna port for transmitting the first reference signal is associated with { at least one antenna port for transmitting the first wireless signal in this application, at least one antenna port for transmitting the second wireless signal in this application }. A square in fig. 6 represents a resource particle.

As one embodiment, the multicarrier symbol is an OFDM symbol.

As one embodiment, the multicarrier symbol is a DFT-S-OFDM symbol.

As one embodiment, the multicarrier symbol is an FBMC symbol.

As an embodiment, the first time-frequency resource comprises a positive integer number of consecutive multicarrier symbols in the time domain.

As one embodiment, the first time-frequency resource includes a positive integer number of discontinuous multicarrier symbols in a time domain.

As one embodiment, the first time-frequency resource includes a positive integer number of consecutive subcarriers in a frequency domain.

As one embodiment, the first time-frequency resource includes a positive integer number of discontinuous subcarriers in a frequency domain.

As one embodiment, the user equipment performs joint channel estimation for the first reference signal, the second reference signal and a first auxiliary reference signal. The right-hand hatched squares in fig. 6 indicate the resource elements occupied by the first auxiliary reference signal.

As a sub-embodiment of the above-mentioned embodiments, the first auxiliary reference signal and the second wireless signal are transmitted by the same positive integer number of antenna ports

As a sub-embodiment of the above embodiment, the first auxiliary reference signal comprises at least one of { DMRS, TRS }.

As an embodiment, the first signaling in this application is used to determine the first set of resource elements and the second set of resource elements.

As an embodiment, the second set of resource particles is composed of resource particles of a third set of resource particles that do not belong to the first set of resource particles, the third set of resource particles includes a positive integer number of resource particles, and the third set of resource particles belongs to the first time-frequency resource. The squares filled with left oblique lines and the squares filled with cross lines in fig. 6 together constitute the third set of resource elements.

As a sub-embodiment of the above embodiment, the first signaling is used to determine the third set of resource elements.

As a sub-implementation of the foregoing embodiment, the density in the time domain of the resource particles in the second resource particle set is equal to the density in the time domain of the resource particles in the third resource particle set minus the density in the time domain of the resource particles in the first resource particle set.

As a sub-implementation of the above-mentioned embodiment, the density of the resource particles in the second set of resource particles in the frequency domain is equal to the density of the resource particles in the third set of resource particles in the frequency domain minus the density of the resource particles in the first set of resource particles in the frequency domain.

As an embodiment, the first wireless signal is transmitted by M2 antenna ports, the second wireless signal is transmitted by M3 antenna ports, and at least one of the M2 antenna ports is the same as one of the M3 antenna ports. The M2 and the M3 are each positive integers.

As a sub-embodiment of the above embodiment, the M2 is not equal to the M3.

As a sub-embodiment of the above embodiment, the M2 is equal to the M3.

As one embodiment, the first signaling is used to determine whether the second wireless signal occupies the second set of resource elements.

As an embodiment, a ratio between the first power in this application and the second power in this application is used to determine whether the second wireless signal occupies the second set of resource elements.

Example 7

Embodiment 7 illustrates a schematic diagram of the distribution of the first set of resource elements and the second set of resource elements in the first time-frequency resource, as shown in fig. 7.

In embodiment 7, the first time-frequency resource, the first set of resource elements, and the second set of resource elements each include a positive integer number of resource elements. The first set of resource elements and the second set of resource elements belong to the first time-frequency resource, respectively. The resource particles occupy the duration of one multi-carrier symbol in the time domain and occupy the bandwidth of one sub-carrier in the frequency domain. There is not one resource particle belonging to both the first set of resource particles and the second set of resource particles. At least one antenna port for transmitting the first reference signal is associated to { at least one antenna port for transmitting the second wireless signal in this application. A square in fig. 7 represents a resource particle.

As an embodiment, the first wireless signal is transmitted by M2 antenna ports, the second wireless signal is transmitted by M3 antenna ports, at least one antenna port of the M2 antenna ports is different from any antenna port of the M3 antenna ports, and M2 and M3 are positive integers respectively.

As a sub-embodiment of the above embodiment, the M2 is not equal to the M3.

As a sub-embodiment of the above embodiment, the M2 is equal to the M3.

As one embodiment, the first wireless signal occupies the first set of resource elements.

As one embodiment, the first signaling is used to determine whether the first wireless signal occupies the first set of resource elements.

As an embodiment, a ratio between the first power in this application and the second power in this application is used to determine whether the first radio signal occupies the first set of resource elements.

As an embodiment, the user equipment in the present application performs channel estimation on the first reference signal and the second reference signal respectively.

As an embodiment, the user equipment in the present application performs phase tracking (phase tracking) on the first reference signal and the second reference signal respectively.

As an embodiment, the user equipment in the present application performs joint channel estimation for the first reference signal and the first auxiliary reference signal. In fig. 7, the squares filled with right-oblique lines indicate resource elements occupied by the first auxiliary reference signal.

As a sub-embodiment of the above-described embodiment, the first auxiliary reference signal and the second wireless signal are transmitted by the same positive integer number of antenna ports.

As an embodiment, the user equipment in the present application performs joint channel estimation for the second reference signal and a second auxiliary reference signal. In fig. 7, the small dot filled squares represent the resource elements occupied by the second auxiliary reference signal.

As a sub-embodiment of the above-mentioned embodiments, the second auxiliary reference signal and the first wireless signal are transmitted by the same positive integer number of antenna ports.

As a sub-embodiment of the above embodiment, the second auxiliary reference signal comprises at least one of { DMRS, TRS }.

Example 8

Embodiment 8 illustrates a schematic diagram of first signaling, as shown in fig. 8.

In embodiment 8, the first signaling includes a first field and a second field, and the first field and the second field respectively include a positive integer number of bits. The first domain is used to determine at least one of { whether the second wireless signal exists in the present application, a ratio between the first power in the present application and the second power in the present application, a modulation scheme of the second wireless signal, a transmission antenna port corresponding to the second wireless signal, and an RS port corresponding to the second wireless signal }. The modulation scheme of the second radio signal is used to determine the first set of resource elements in this application.

For one embodiment, the first field includes 2 bits.

For one embodiment, the first field includes 4 bits.

For one embodiment, the first field includes 6 bits.

As one embodiment, the first domain indicates an MCS of the second wireless signal.

As an embodiment, the first signaling includes scheduling information of the first wireless signal in the present application, where the scheduling information of the first wireless signal includes at least one of { occupied time domain resource, occupied frequency domain resource, MCS, HARQ process number, RV, NDI, corresponding RS port, and corresponding transmitting antenna port }.

As an embodiment, the first signaling is used to determine whether at least one antenna port used for transmitting the first reference signal in the present application is associated to at least one antenna port used for transmitting the first wireless signal in the present application.

Example 9

Embodiment 9 illustrates a relationship between the number of frequency units occupied by the first time-frequency resource in the frequency domain and the density of resource elements in a given set of resource elements in the frequency domain, and a relationship between the MCS of a given wireless signal and the density of resource elements in the given set of resource elements in the time domain.

In embodiment 9, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource particles in the given set of resource particles in the frequency domain; the MCS of the given wireless signal is used to determine a density in a time domain of resource particles in the given set of resource particles. The given set of resource particles is any one of { the first set of resource particles in this application, the second set of resource particles in this application, and the third set of resource particles in embodiment 6 }. If the given set of resource elements is the first set of resource elements, the given wireless signal is the second wireless signal in this application; otherwise the given wireless signal is the first wireless signal in this application.

In embodiment 9, the density in the frequency domain of the resource elements in the given set of resource elements is one of a first densities; a is a positive integer, and any one of the A first densities is a non-negative real number not greater than 1. The A first densities are arranged in sequence, and the A first parameters are arranged from small to large in sequence; the a first parameters are each non-negative integers. If the number of frequency units occupied by the first time-frequency resource on the frequency domain is greater than or equal to the ith first parameter in the A first parameters and is less than the (i + 1) th first parameter in the A first parameters, the density of the resource particles in the given resource particle set on the frequency domain is the ith first density in the A first densities; a non-negative integer from 0 to a minus 2. And if the number of the frequency units occupied by the first time-frequency resource on the frequency domain is greater than or equal to the A-1 first parameter of the A first parameters, the density of the resource particles in the given resource particle set on the frequency domain is the A-1 first density of the A first densities.

A density in a time domain of resource particles in the given set of resource particles is one of B second densities; the B is a positive integer, and any one of the B second densities is a non-negative real number not greater than 1. The B second densities are arranged in sequence, and the B second parameters are arranged from small to large in sequence; the B second parameters are each non-negative integers. If the MCS of the given wireless signal is greater than or equal to the jth one of the B second parameters and less than the j +1 th one of the B second parameters, the density in the time domain of the resource elements in the given set of resource elements is the jth one of the B second densities; a non-negative integer of said j from 0 to said B minus 2. The density in the time domain of the resource elements in the given set of resource elements is the B-1 st second density of the B second densities if the MCS for the given wireless signal is greater than or equal to the B-1 st second parameter of the B second parameters.

As an embodiment, any two first parameters of the a first parameters are not equal.

As an embodiment, the a first parameters are fixed (not required to be configured).

As an embodiment, the a first parameters are configured by higher layer signaling.

As an embodiment, the a first parameters are configured by RRC signaling.

As an embodiment, the a first parameters are cell-common.

As an embodiment, the a first parameters are UE-specific.

As an example, the a first densities are fixed (do not need to be configured).

As an embodiment, the a first densities are configured by higher layer signaling.

As an embodiment, the a first densities are configured by RRC signaling.

As an embodiment, the a first densities are cell-common.

As an embodiment, the a first densities are arranged in order from small to large.

As an embodiment, the smallest first density of the a first densities is 0.

As an embodiment, the smallest first parameter of the a first parameters is 0.

As an embodiment, the value of a is associated with the given set of resource particles.

As an embodiment, the values of the a first densities are associated with the given set of resource particles.

As an embodiment, the values of the a first parameters are related to the given set of resource elements.

As an embodiment, any two of the B second parameters are not equal.

As an embodiment, the B second parameters are fixed (not required to be configured).

As an embodiment, the B second parameters are configured by higher layer signaling.

As an embodiment, the B second parameters are configured by RRC signaling.

As an embodiment, the B second parameters are cell-common.

As an embodiment, the B second parameters are UE-specific.

As an example, the B second densities are fixed (do not need to be configured).

As an embodiment, the B second densities are configured by higher layer signaling.

As an embodiment, the B second densities are configured by RRC signaling.

As an embodiment, the B second densities are cell-common.

As an embodiment, the B second densities are arranged in order from small to large.

As an embodiment, the smallest second density of the B second densities is 0.

As an embodiment, the smallest second parameter of the B second parameters is 0.

As an embodiment, the value of B is associated with the given set of resource particles.

As an embodiment, the values of the B second densities are associated with the given set of resource particles.

As an embodiment, the values of the B second parameters are related to the given set of resource elements.

As one embodiment, when the given set of resource particles is the first set of resource particles, the a equals a1, the B equals B1; when the given set of resource particles is the second set of resource particles, a equals a2, B equals B; when the given set of resource particles is the third set of resource particles, the A equals A3, the B equals B3. Said A1, said A2, said A3, said B1, said B2, said B3 are positive integers, respectively.

As a sub-example of the above-described embodiment, { the a1, the a2, and the A3}, at least two of which take on values independent of each other.

As a sub-embodiment of the above embodiment, at least one of the a1, the a2, and the A3 is not equal to the other two.

As a sub-embodiment of the above embodiment, the a1, the a2 and the A3 are equal.

As a sub-embodiment of the above-described embodiment, at least two of { the B1, the B2, and the B3} have values independent of each other.

As a sub-embodiment of the above embodiment, at least two of the B1, the B2, and the B3 are equal.

As a sub-embodiment of the above embodiment, at least one of the B1, the B2, and the B3 is not equal to the other two.

As a sub-embodiment of the above embodiment, the B1, the B2 and the B3 are equal.

As a sub-embodiment of the above-described embodiment, values of at least two of { a1 first parameters, a2 first parameters, and A3 first parameters } are independent of each other.

As a sub-example of the above-described embodiment, at least two values of { a1 first densities, a2 first densities, A3 first densities } are independent of each other.

As a sub-embodiment of the above-described embodiment, at least two values of { B1 second parameters, B2 second parameters, and B3 second parameters } are independent of each other.

As a sub-example of the above-described embodiment, at least two values of { B1 second densities, B2 second densities, and B3 second densities } are independent of each other.

Example 10

Embodiment 10 illustrates a schematic diagram of superimposing a first wireless signal and a second wireless signal, as shown in fig. 10.

In embodiment 10, the base station in the present application superimposes the first wireless signal and the second wireless signal, and then performs the sameAnd sending the superposed signal in the first time-frequency resource. The first wireless signal carries a first bit block, the second wireless signal carries a second bit block, and the first bit block and the second bit block respectively comprise a positive integer number of bits. The superposition means that the first symbol block and the second symbol block are weighted and then added to obtain a superposed symbol block; the superimposed symbol block is used to generate a superimposed wireless signal, and the base station transmits the superimposed wireless signal in the first time-frequency resource, wherein the superimposed wireless signal is a signal generated by superimposing the first wireless signal and the second wireless signal, that is, the superimposed signal. The first symbol block and the second symbol block are respectively generated after the first bit block and the second bit block sequentially undergo channel coding (channelization) and Modulation Mapper (Modulation Mapper), and weighting coefficients used for the weighting are both positive real numbers, and in fig. 10, the weighting coefficients corresponding to the first symbol block and the second symbol block are respectively positive real numbers

And

As an embodiment, the superimposed symbol block being used to generate the superimposed wireless signal refers to: the superposed wireless signal is output after the superposed symbol block sequentially passes through a layer mapper, a precoding unit, a resource element mapper and a multi-carrier symbol.

As an embodiment, the superimposed symbol block being used to generate the superimposed wireless signal refers to: the superposed wireless signal is output after the superposed symbol block sequentially passes through a layer mapper, a conversion precoder, a precoding, a resource element mapper and a multi-carrier symbol.

As one embodiment, the α is a positive real number less than 0.5.

As an example, the ratio between the first power in this application and the second power in this application is α/(1- α).

As an embodiment, at least one of the transmission processor 416 and the adjustment mapper 471 in embodiment 4 is used to perform the superposition.

As an embodiment, a target receiver of the first wireless signal performs interference cancellation on the second wireless signal in the first time-frequency resource to obtain a residual signal; the first wireless signal is then recovered from the residual signal.

As a sub-embodiment of the above embodiment, the Interference Cancellation is SIC (Successive Interference Cancellation).

As a sub-embodiment of the above-described embodiment, at least one of the reception processor 456 and the demodulator 458 in embodiment 4 is used to perform the interference cancellation.

As a sub-embodiment of the foregoing embodiment, the interference cancellation refers to: the target receiver of the first wireless signal recovers the second wireless signal from the wireless signal received in the first time-frequency resource, and then removes the effect of the second wireless signal from the wireless signal received in the first time-frequency resource to obtain the remaining signal.

As a sub-embodiment of the foregoing embodiment, the interference cancellation refers to: a target receiver of the first wireless signal demodulates the second wireless signal to obtain a first recovery symbol block; the effect of the first recovered symbol block is then subtracted from the received wireless signal in the first time-frequency resource to obtain the residual signal.

As a reference example of the above sub-embodiment, the first recovered symbol block is an estimate of the second symbol block.

As a sub-embodiment of the foregoing embodiment, the interference cancellation refers to: a target receiver of the first wireless signal carries out channel estimation aiming at a first given reference signal to obtain a first channel matrix; demodulating the second wireless signal to obtain a first recovery symbol block; the product of the first channel matrix and the first recovered symbol block is then subtracted from the received wireless signal in the first time-frequency resource to obtain the residual signal.

As a reference example of the above sub-embodiments, the first given reference signal and the second radio signal are transmitted by the same positive integer number of antenna ports.

As a reference example of the above sub-examples, the first given reference signal includes at least one of { DMRS, PTRS, TRS }.

As a reference example of the above sub-embodiments, the first given reference signal comprises the first reference signal in the present application.

As a sub-embodiment of the foregoing embodiment, the interference cancellation refers to: demodulating and decoding the second wireless signal by a target receiver of the first wireless signal to obtain a first recovery bit block; then coding and modulating the first recovery bit block by using the MCS corresponding to the second wireless signal to obtain a second recovery symbol block; the effect of the second recovered symbol block is then subtracted from the received wireless signal in the first time-frequency resource to obtain the residual signal.

As a reference example of the above sub-embodiment, the first recovered bit block is an estimate of the second bit block.

As a reference example of the above sub-embodiment, the second recovered symbol block is an estimate of the second symbol block.

As a sub-embodiment of the foregoing embodiment, the interference cancellation refers to: a target receiver of the first wireless signal carries out channel estimation aiming at a first given reference signal to obtain a first channel matrix; demodulating and decoding the second wireless signal to obtain a first recovery bit block; then coding and modulating the first recovery bit block by using the MCS corresponding to the second wireless signal to obtain a second recovery symbol block; the product of the first channel matrix and the second recovered symbol block is then subtracted from the received wireless signal in the first time-frequency resource to obtain the residual signal.

As a sub-embodiment of the foregoing embodiment, the interference cancellation refers to: a target receiver of the first wireless signal demodulates the second wireless signal to obtain a first recovery symbol block; the first wireless signal is then demodulated using the first recovered symbol block.

As a sub-embodiment of the foregoing embodiment, the interference cancellation refers to: demodulating and decoding the second wireless signal by a target receiver of the first wireless signal to obtain a first recovery bit block; the first wireless signal is then demodulated using the first recovered block of bits.

As an embodiment, the modulation scheme of the second wireless signal is one of { BPSK, QPSK, 8PSK, 16QAM, 64QAM, 256QAM }.

Example 11

Embodiment 11 illustrates a schematic diagram in which a first wireless signal and a second wireless signal are superimposed, as shown in fig. 11.

In embodiment 11, the base station in the present application superimposes the first wireless signal and the second wireless signal, and then transmits the superimposed signal in the first time-frequency resource in the present application. The first wireless signal carries a first bit block, the second wireless signal carries a second bit block, and the first bit block and the second bit block respectively comprise a positive integer number of bits. The superposition means that the third bit block and the fourth bit block are input to the same modulation mapper (modulation mapper), and the output of the modulation mapper is used to generate the superposed wireless signal. And the base station sends the superposed wireless signal in the first time-frequency resource, wherein the superposed wireless signal is a signal generated by superposing the first wireless signal and the second wireless signal, namely the superposed signal. The third bit block and the fourth bit block are generated after the first bit block and the second bit block are subjected to channel coding, respectively. The constellation diagram corresponding to the modulation mapper is shown in fig. 11, where each constellation point (constellation point) corresponds to 4 input bits, where two significant bits (mostsignifiancertbits), i.e. the two bits on the left in fig. 11, are from the fourth bit block; the two secondary bits (least significant bits), i.e. the two bits on the right in fig. 11, are from the third block of bits.

As an embodiment, the channel coding includes rate matching (ratelocking).

As an embodiment, the use of the output of the modulation mapper to generate a superimposed wireless signal refers to: the superposed wireless signal is output after the output of the modulation mapper sequentially passes through a layer mapper, a precoding unit, a resource element mapper and a multi-carrier symbol.

As an embodiment, the use of the output of the modulation mapper to generate a superimposed wireless signal refers to: the superposed wireless signal is output after the output of the modulation mapper sequentially passes through a layer mapper, a conversion precoder, a precoding, a resource element mapper and a multi-carrier symbol.

Example 12

Embodiment 12 is a block diagram illustrating a processing apparatus used in a user equipment, as shown in fig. 12. In fig. 12, a processing apparatus 1200 in a user equipment is mainly composed of a first receiver module 1201 and a second receiver module 1202.

In embodiment 12, a first receiver module 1201 receives first signaling; the second receiver module 1202 receives the first wireless signal and the second wireless signal in the first time-frequency resource; the second receiver module 1202 also receives a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set.

In embodiment 12, the target recipient of the second wireless signal is a communication device other than the user equipment, the transmission powers of the first and second wireless signals are a first power and a second power, respectively, and the first signaling is used by the second receiver module 1202 to determine the first time-frequency resource, the ratio between the first power and the second power, and the first set of resource particles; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

For one embodiment, the first signaling is used by a second receiver module 1202 to determine whether the first wireless signal occupies the first set of resource elements.

As an embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used by the second receiver module 1202 to determine the density of resource particles in the first set of resource particles in the frequency domain.

For one embodiment, the second receiver module 1202 also determines a second set of resource particles; wherein the first signaling is used by the second receiver module 1202 to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource.

As a sub-embodiment of the above embodiment, if the second set of resource elements is not an empty set, the second receiver module 1202 further receives a second reference signal in the second set of resource elements; wherein at least one antenna port for transmitting the second reference signal is associated to at least one antenna port for transmitting the first wireless signal.

As a sub-embodiment of the above embodiment, the second wireless signal occupies the second set of resource elements.

As a sub-embodiment of the above embodiment, the first signaling is used by the second receiver module 1202 to determine whether the second wireless signal occupies the second set of resource elements.

As a sub-embodiment of the above embodiment, the second wireless signal occupies resource elements outside the second set of resource elements.

As a sub-implementation of the foregoing embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used by the second receiver module 1202 to determine the density of resource particles in the second set of resource particles in the frequency domain.

For one embodiment, the second receiver module 1202 performs interference cancellation on the second wireless signal in the first time-frequency resource.

As a sub-embodiment, the first receiver module 1201 includes at least one of { antenna 452, receiver 454, receive processor 456, demodulator 458, controller/processor 459, memory 460, data source 467} in embodiment 4.

As a sub-embodiment, the second receiver module 1202 includes at least one of { antenna 452, receiver 454, receive processor 456, demodulator 458, controller/processor 459, memory 460, data source 467} in embodiment 4.

Example 13

Embodiment 13 is a block diagram illustrating a processing apparatus used in a base station, as shown in fig. 13. In fig. 13, a processing means 1300 in a base station is mainly composed of a first transmitter module 1301 and a second transmitter module 1302.

In embodiment 13, the first transmitter module 1301 transmits a first signaling; the second transmitter module 1302 transmits the first wireless signal and the second wireless signal in the first time-frequency resource; the second transmitter module 1302 also transmits a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set.

In embodiment 13, the target recipient of the first wireless signal and the target recipient of the second wireless signal are different communication devices, the transmission powers of the first wireless signal and the second wireless signal are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

As an embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used by the second transmitter module 1302 to determine the density of resource elements in the first set of resource elements in the frequency domain.

For one embodiment, the second transmitter module 1302 further determines a second set of resource elements; wherein the first signaling is used to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource.

As a sub-embodiment of the above embodiment, if the second set of resource elements is not an empty set, the second transmitter module 1302 further transmits a second reference signal in the second set of resource elements; wherein at least one antenna port for transmitting the second reference signal is associated to at least one antenna port for transmitting the first wireless signal.

As a sub-embodiment of the above embodiment, the first signaling is used to determine whether the second wireless signal occupies the second set of resource elements.

As a sub-implementation of the foregoing embodiment, the number of frequency units occupied by the first time-frequency resource in the frequency domain is used by the second transmitter module 1302 to determine the density of resource elements in the second resource element set in the frequency domain.

For one embodiment, the second transmitter module 1302 may superimpose the first wireless signal and the second wireless signal and then transmit the superimposed signal in the first time-frequency resource.

For one embodiment, the first transmitter module 1301 includes at least one of { antenna 420, transmitter 418, transmit processor 416, modulation mapper 471, controller/processor 475, memory 476} in embodiment 4.

For one embodiment, the second transmitter module 1302 includes at least one of the { antenna 420, transmitter 418, transmit processor 416, modulation mapper 471, controller/processor 475, memory 476} of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, Machine Type Communication (MTC) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, equipment such as low-cost panel computer. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B), a TRP (Transmitter Receiver Point), and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method in a user equipment used for wireless communication, comprising:

-receiving first signaling, the first signaling being physical layer signaling;

wherein a target recipient of the second wireless signal is a communication device other than the user equipment, transmission powers of the first and second wireless signals are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; at least one of an MCS of the second wireless signal or a number of frequency units occupied by the first time-frequency resource over a frequency domain is used to determine whether the first set of resource elements is an empty set; if the first resource particle set is not an empty set, further comprising:

-receiving a first reference signal in the first set of resource elements;

2. The method of claim 1, wherein the first signaling is used to determine whether the first wireless signal occupies the first set of resource elements.

3. The method according to claim 1 or 2, wherein the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource elements in the first set of resource elements in the frequency domain.

4. The method according to claim 1 or 2, comprising:

-determining a second set of resource elements;

wherein the first signaling is used to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource, further comprising if the second set of resource elements is not an empty set

-receiving a second reference signal in the second set of resource elements;

5. The method of claim 4, wherein the first signaling is used to determine whether the second wireless signal occupies the second set of resource elements; or the second wireless signal occupies resource particles outside the second set of resource particles.

6. The method of claim 4, wherein the number of frequency bins occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource elements in the second set of resource elements in the frequency domain.

7. The method according to claim 1 or 2, wherein the user equipment performs interference cancellation on the second radio signal in the first time-frequency resource.

8. A method in a base station used for wireless communication, comprising:

-transmitting first signaling, the first signaling being physical layer signaling;

wherein a target recipient of the first wireless signal and a target recipient of the second wireless signal are different communication devices, transmission powers of the first wireless signal and the second wireless signal are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; at least one of an MCS of the second wireless signal or a number of frequency units occupied by the first time-frequency resource over a frequency domain is used to determine whether the first set of resource elements is an empty set; if the first resource particle set is not an empty set, further comprising:

-transmitting a first reference signal in the first set of resource elements;

9. The method of claim 8, wherein the first signaling is used to determine whether the first wireless signal occupies the first set of resource elements.

10. The method according to claim 8 or 9, wherein the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource elements in the first set of resource elements in the frequency domain.

11. The method according to claim 8 or 9, comprising:

-determining a second set of resource elements;

-transmitting a second reference signal in the second set of resource elements;

12. The method of claim 11, wherein the first signaling is used to determine whether the second wireless signal occupies the second set of resource elements; or the second wireless signal occupies resource particles outside the second set of resource particles.

13. The method of claim 11, wherein the number of frequency bins occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource elements in the second set of resource elements in the frequency domain.

14. The method of claim 8 or 9, wherein the base station superimposes the first wireless signal and the second wireless signal and then transmits the superimposed signal in the first time-frequency resource.

15. A user device configured for wireless communication, comprising:

a first receiver module to receive a first signaling, the first signaling being physical layer signaling;

wherein a target recipient of the second wireless signal is a communication device other than the user equipment, transmission powers of the first and second wireless signals are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; at least one of an MCS of the second wireless signal or a number of frequency units occupied by the first time-frequency resource over a frequency domain is used to determine whether the first set of resource elements is an empty set; the second receiver module further receives a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set; wherein at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

16. The UE of claim 15, wherein the first signaling is used to determine whether the first radio signal occupies the first set of resource elements.

17. The UE of claim 15 or 16, wherein the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource elements in the first set of resource elements in the frequency domain.

18. The user equipment as claimed in claim 15 or 16, wherein the second receiver module further determines a second set of resource elements;

wherein the first signaling is used to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource, the second receiver module further receiving a second reference signal in the second set of resource elements if the second set of resource elements is not an empty set;

19. The user equipment of claim 18, wherein the first signaling is used to determine whether the second radio signal occupies the second set of resource elements; alternatively, the first and second electrodes may be,

the second wireless signal occupies resource particles outside of the second set of resource particles.

20. The ue of claim 18, wherein the number of frequency bins occupied by the first time-frequency resource in the frequency domain is used by the second receiver module 1202 to determine a density of resource particles in the second set of resource particles in the frequency domain.

21. The user equipment of claim 15 or 16, wherein the second receiver module performs interference cancellation on the second wireless signal in the first time-frequency resource.

22. A base station device used for wireless communication, comprising:

a first transmitter module, configured to transmit a first signaling, where the first signaling is a physical layer signaling;

wherein a target recipient of the first wireless signal and a target recipient of the second wireless signal are different communication devices, transmission powers of the first wireless signal and the second wireless signal are a first power and a second power, respectively, the first signaling is used to determine the first time-frequency resource, a ratio between the first power and the second power, and a first set of resource elements; the first time-frequency resource and the first resource particle set respectively comprise a positive integer number of resource particles, and the first resource particle set belongs to the first time-frequency resource; the resource particles occupied by the second wireless signal are outside the first set of resource particles; at least one of an MCS of the second wireless signal or a number of frequency units occupied by the first time-frequency resource over a frequency domain is used to determine whether the first set of resource elements is an empty set; the second transmitter module further transmits a first reference signal in the first set of resource elements if the first set of resource elements is not an empty set; wherein at least one antenna port for transmitting the first reference signal is associated to at least the latter of { at least one antenna port for transmitting the first wireless signal, at least one antenna port for transmitting the second wireless signal }.

23. The base station device of claim 22, wherein the first signaling is used to determine whether the first wireless signal occupies the first set of resource elements.

24. The base station device according to claim 22 or 23, wherein the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource particles in the first set of resource particles in the frequency domain.

25. The base station device of claim 22 or 23, wherein the second transmitter module further determines a second set of resource elements;

wherein the first signaling is used to determine the second set of resource elements, the second set of resource elements comprising a positive integer number of resource elements, the second set of resource elements belonging to the first time-frequency resource;

the second transmitter module further transmits a second reference signal in the second set of resource elements if the second set of resource elements is not an empty set;

26. The base station device of claim 25, wherein the first signaling is used to determine whether the second wireless signal occupies the second set of resource elements; alternatively, the first and second electrodes may be,

the second wireless signal occupies the second set of resource elements.

27. The base station device of claim 25, wherein the number of frequency units occupied by the first time-frequency resource in the frequency domain is used to determine the density of resource elements in the second set of resource elements in the frequency domain.

28. The base station apparatus of claim 22 or 23, wherein the second transmitter module superimposes the first wireless signal and the second wireless signal, and then transmits the superimposed signal in the first time-frequency resource.