WO2017148430A1

WO2017148430A1 - Information transmission method and apparatus

Info

Publication number: WO2017148430A1
Application number: PCT/CN2017/075524
Authority: WO
Inventors: 龚政委; 王龙保
Original assignee: 华为技术有限公司
Priority date: 2016-03-04
Filing date: 2017-03-03
Publication date: 2017-09-08

Abstract

An embodiment of the present invention provides an information transmission method. The method comprises: a first device obtains N layers of symbol data sequences; performing scrambling processing on each layer of symbol data sequences among the N layers of symbol data sequences to obtain a scramble signal; and sending the scramble signal to a second device, N being a positive integer. The method for performing multiple-layer information multiplexing transmission based on a scramble signal can improve performance gain of a system.

Description

Method and device for transmitting information

Technical field

Embodiments of the present invention relate to the field of communications and, more particularly, to methods and apparatus for transmitting information.

Background technique

Orthogonal multiple access technology is widely used in 3rd-generation (3G) and 4th-generation (4G) mobile communication systems. Here, "orthogonal" means that one resource block of the system can only be allocated to at most one user, and different users occupy "orthogonal" frequency resources. With the continuous evolution of wireless cellular networks, orthogonal multiple access technology has gradually failed to meet the increasing capacity requirements of cellular networks, such as massive access and spectrum efficiency. At the same time, non-orthogonal multiple access technology is gradually attracting more and more attention from industry and academia. "Non-orthogonal" means that multiple users can share system resources such as spectrum in a non-orthogonal manner. It is hoped that future wireless cellular networks, such as the 5th-Generation (5G) mobile communication system, can effectively solve the problem of capacity increase by means of non-orthogonal multiple access technology.

In the non-orthogonal multiple access technology, the transmitting end may superimpose at least two data streams to be sent by a plurality of users that are far-nearly paired to a certain time-frequency resource of the system for transmission. The non-orthogonal multiple-access (NOMA) access technology studied in the standard independently encodes, modulates, and hierarchically maps data of different layers of at least two users, and allocates different powers for data of different layers. A distribution coefficient is used to superimpose data according to the power distribution coefficient and output a signal, and the receiving side can also implement multi-user demodulation by power allocation among multiple users. However, this multiple access technology can only implement multi-user detection based on power allocation, the application scenario is limited, and the system performance gain is also limited. Especially for non-near-far users, the performance of this type of NOMA multiple access method is not optimal.

Summary of the invention

Embodiments of the present invention provide a method and apparatus for transmitting information, which can improve performance gain of a system.

In a first aspect, a method for transmitting information is provided, comprising: acquiring a modulated N-layer modulated signal to be transmitted to at least one terminal device, where N is a positive integer greater than or equal to 2; and the N is on the target resource Each layer of the layer modulated signal is multiplied by a corresponding linear processing coefficient of the layer to obtain a linearly processed signal of each layer, and the linear processed signals of all layers are added to obtain a superimposed output signal, and the linear processing is performed. The coefficient is a complex number; the superimposed output signal is transmitted to the at least one terminal device by the each target resource.

In the embodiment of the present invention, the multi-layer signals of the at least one terminal device are separately modulated, and the modulated signals of each of the N-layer modulated signals are linearly processed and superimposed to obtain a superimposed output signal on the target resource, and may be The superimposed output signal is sent to the terminal device, and the method of transmitting the information can improve the performance gain of the system.

In an embodiment of the embodiments of the present invention, a method for transmitting information may be used in a multiple access system, including an orthogonal multiple access system and a non-orthogonal multiple access system, and the system may include a receiving end and a transmitting The method for transmitting information may be performed by the transmitting end, and the transmitting end may be a network side device, for example, the transmitting end may be a base station.

The "target" in the "target resource" in the embodiment of the present invention refers to the description of the embodiment, and does not imply the meaning of selection. The target resource may be a certain resource in the actual transmission, and is not allowed here. limited.

The linear processing coefficient can be a complex number, so that the amplitude and phase of the modulated signal can be changed in two dimensions to obtain a linearly processed signal.

In conjunction with the first aspect, in an implementation of the first aspect, the constellation of the superimposed output signal includes M constellation points,

m _i is the modulation order of the i-th layer modulation signal, and the amplitude or phase of the M constellation points or the probability distribution of the real or imaginary part satisfies the Gaussian distribution.

It should be understood that the Gaussian distribution defined in the embodiment of the present invention may be approximately satisfying the Gaussian distribution, allowing a certain range of errors to exist. The amplitude or phase of the M constellation points or the probability distribution of the real or imaginary parts satisfying the Gaussian distribution can further improve the performance gain of the system.

Each layer of the modulated signal may have different modulation modes, and the same modulation mode may include different multiple constellation points. When the linear processing coefficient is constant, each layer of the modulated signal may correspond to multiple linear processed signals, and thus There are multiple superimposed output signals.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the modulating signal of each layer of the N layer modulated signals is multiplied by a linear processing corresponding to the layer on a target resource. The coefficient, the linearly processed signal of each layer is obtained by multiplying the modulated signal of each layer by a corresponding linear processing coefficient, or a corresponding linear processing coefficient and a power distribution coefficient, to obtain a linear processed signal of each layer .

In an embodiment of the present invention, when two or more terminal devices are included in the system, different power allocation coefficients may be set for different terminal devices to distinguish different terminal devices, so that the terminal device may not Restricted by the far and near pairing scene. That is, the difference in channel quality between any two terminal devices in the embodiment of the present invention may be less than a certain channel quality threshold.

In an embodiment of the embodiment of the present invention, the power allocation coefficient may be determined according to the near and far characteristics of the terminal device. In addition, the power allocation coefficient is only related to the number of layers of data, regardless of the number of the resource. That is to say, the power distribution coefficients of the same layer number of data on different resources can be the same.

In an embodiment of the embodiment of the present invention, the order in which the network side device linearly processes the signal and allocates the power allocation coefficient may be exchanged, that is, the network side device may linearly process the signal first, and then the linearly processed signal. The power distribution coefficient is assigned, and the superimposed output signal is finally output. The network side device may also first allocate a power allocation coefficient to the signal, then allocate a linear processing coefficient to the data on different resources of different layers, and finally output the superimposed output signal.

In an embodiment of the embodiment of the present invention _, the linear processing coefficient of the i-th layer modulation signal x _i,j on the j-th resource can be determined by the following method

Where i = 1, 2, ... N, j = 1, 2, ... J, J is the total number of resource numbers, and J is an integer: a row vector that determines the linear processing coefficients of all layer signals on the jth resource

The amplitude or phase of the output signal superposed by the linear processing signals of all layers on the jth resource satisfies the Gaussian distribution, and is selected from the row vectors.

Here the linear processing coefficients of the different layers on the same resource are as follows:

Where γ is a fixed value.

The linear processing coefficients on different resources may be a permutation combination of β ⁱ when the above i takes different values.

In an embodiment of the embodiment of the present invention, determining a row vector composed of linear processing coefficients of all layer signals on the jth resource

Including: determining N elements in the row vector, and obtaining M vectors according to N elements, where M=N! And selecting a vector from the M vectors as a row vector, so that the amplitude or phase of the output signal superposed by the linear processing signals of all layers on the jth resource satisfies a Gaussian distribution.

Optionally, as an embodiment of the embodiment of the present invention, a vector may be selected from the M vectors as the row vector corresponding to the jth resource in the following manner: a predefined vector.

among them

Include N elements in the row vector, according to the vector

Determining a row vector corresponding to the jth resource with a predefined randomly selected rule

For example, suppose M vectors obtained from N elements are written as

Randomly selected rules can be

Where m can be a randomly selected value in [0, M-1].

Optionally, as another embodiment of the embodiment of the present invention, a vector may be selected from the M vectors as the row vector corresponding to the jth resource in the following manner: a predefined vector.

among them

Include N elements in the row vector, according to the vector

The relationship with the resource number j determines the row vector corresponding to the jth resource

For example, suppose M vectors obtained from N elements are written as

Randomly selected rules can be

Where m can be obtained by the j and M remainder operations.

In an embodiment of the embodiment of the present invention, the superimposed output signal of all layer signal outputs on the jth resource is

The total superimposed output signal output on all resources is X = [x ₁ , x ₂ , ... x _j ..., x _J ].

The power-distributed signal of the multi-layer data can be output on different resources. For example, the output signal on the resource element (RE) corresponding to the resource number j can be

In an embodiment of the present invention, determining the N-layer data of the at least one terminal device may be implemented by acquiring at least one transport block (TB) of the at least one terminal device, and encoding the at least one transport block. The data is serially converted and converted to obtain N-layer data.

In an embodiment of the embodiment of the present invention, the N layer data may be from the same terminal device or may be from different terminal devices. The N layer data may be obtained for the same transport block of the same terminal device, or may be obtained for different transport blocks of the same terminal device. For example, the N-layer data may be obtained by serial-to-parallel conversion only after encoding the same transport block of the same terminal device, or may be obtained by serial-to-parallel conversion for different transport blocks of the same terminal device, and may also be different for different terminal devices. The transport block is encoded and then obtained by serial-to-parallel conversion.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the at least one terminal device includes a first terminal device and a second terminal device, and a channel quality and a location of the first terminal device The absolute value of the difference in channel quality of the second terminal device is smaller than a channel quality threshold, and the channel quality threshold is a positive integer.

When the absolute value of the difference in channel quality between two terminal devices is greater than or equal to the channel quality threshold, the two terminal devices are considered as far-end paired users. When the absolute value of the difference in channel quality between two terminal devices is less than the channel quality threshold, the two terminals can be regarded as non-near-far users. The embodiments of the present invention may not limit the distance between the terminal devices.

In the embodiment of the present invention, for users with different channel qualities, on the basis of linear processing of the modulated signal, by increasing the allocated power allocation coefficient, the power distribution coefficient can further increase the user with different channel quality in the output signal. The degree of discrimination of the signal. That is, the far-near paired users can be further distinguished by assigning power allocation coefficients.

In an embodiment of the present invention, if the number of terminal devices is 1, the linear processing coefficients of the modulated signals of the same layer may be the same or different on different resources.

In one embodiment of the invention, if the number of terminal devices is greater than one, the linear processing coefficients of the modulated signals of the same layer are different on different resources.

When the modulation signals of all layers are from the same terminal device, that is, single user information is transmitted, the linear processing coefficients of the modulated signals of the same layer are the same or different on different resources. When the N-layer modulated signals are from different terminal devices, that is, when multi-user information is transmitted, the linear processing coefficients of the modulated signals of the same layer are different on different resources.

In an embodiment of the present invention, the network side device may further send the data layer number N to the terminal device. Modulation and Encoding Strategy (MCS) of each layer of data and layer number i of data obtained by the transport block of the terminal device, so that the terminal device receives the signal transmitted by the network side device, according to N, MCS and i decodes the received signal. The method by which the terminal device decodes the received signal according to N, MCS, and i can be performed according to the method in the prior art.

A second aspect provides a method for transmitting information, including: receiving, by a target resource, a superimposed output signal sent by a network side device, where the superimposed output signal is each layer of a modulated signal in an N layer modulated signal multiplied by the layer corresponding to the layer The sum of linear processing coefficients, the linear processing coefficient being a complex number, N being a positive integer greater than or equal to 2; demodulating the superimposed output signal according to a linear processing coefficient of each layer of the modulated signal.

With reference to the second aspect, in an implementation manner of the second aspect, the constellation of the superimposed output signal includes M constellation points,

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the demodulating the superimposed output signal according to a linear processing coefficient of each layer of the modulated signal includes: The superposed output signal is demodulated by a linear processing coefficient of each layer of the modulated signal, or a corresponding linear processing coefficient and power partitioning coefficient.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the method is performed by at least a first terminal device and a second terminal device, a channel quality of the first terminal device, and the The absolute value of the difference in channel quality of the second terminal device is less than a channel quality threshold, and the channel quality threshold is a positive integer.

A third aspect provides an apparatus for transmitting information, including: an acquiring unit, configured to acquire a modulated N-layer modulated signal to be transmitted to at least one terminal device, where N is a positive integer greater than or equal to 2; Multiplying each layer of the modulation signal acquired by the acquiring unit on the target resource by a linear processing coefficient corresponding to the layer, obtaining a linear processing signal of each layer, and adding the linear processing signals of all layers to obtain Superimposing an output signal, the linear processing coefficient is a complex number; and a sending unit, configured to send, by using the each target resource, the superimposed output signal obtained by the processing unit to the at least one terminal device.

In conjunction with the third aspect, in an implementation of the third aspect, the constellation of the superimposed output signal includes M constellation points,

In conjunction with the third aspect and the foregoing implementation manner, in another implementation manner of the third aspect, the processing unit is configured to multiply each layer of the modulated signal acquired by the acquiring unit by a different linearity on the target resource. Processing the coefficients to obtain a linearly processed signal for each layer includes: a processing unit configured to multiply the modulated signal of each layer by a linear processing coefficient corresponding to the layer, or a corresponding linear processing coefficient and a power distribution coefficient, to obtain the The linear processing signal for each layer.

With reference to the third aspect and the foregoing implementation manner, in another implementation manner of the third aspect, the at least one terminal device includes a first terminal device and a second terminal device, and a channel quality and a location of the first terminal device The absolute value of the difference in channel quality of the second terminal device is smaller than a channel quality threshold, and the channel quality threshold is a positive integer.

The apparatus for transmitting information provided by the third aspect may be used to perform any of the above first aspect or the first aspect. The method in the way of implementation. In particular, the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.

The fourth aspect provides an apparatus for transmitting information, including: a receiving unit, configured to receive, by using a target resource, a superimposed output signal sent by a network side device, where the superimposed output signal is a modulated signal of each layer in the N layer modulated signal. Multiplied by the sum of the linear processing coefficients corresponding to the layer, the linear processing coefficient is a complex number, N is a positive integer greater than or equal to 2; and a demodulation unit is configured to perform a linear processing coefficient pair according to the modulation signal of each layer The superimposed output signal obtained by the receiving unit is demodulated.

With reference to the fourth aspect, in an implementation manner of the fourth aspect, the constellation of the superimposed output signal includes M constellation points,

m _i is the i-th layer modulation order of the modulation signal, or probability amplitude of the M constellation points of a phase or real or imaginary part of the distribution of a Gaussian distribution.

With reference to the fourth aspect and the foregoing implementation manner, in another implementation manner of the fourth aspect, the demodulation unit is configured to obtain, according to the linear processing coefficient of the modulation signal of each layer, the receiving unit Demodulating the superimposed output signal includes: demodulating unit configured to demodulate the superimposed output signal according to a linear processing coefficient of the modulation signal of each layer, or a linear processing coefficient and a power distribution coefficient.

With reference to the fourth aspect and the foregoing implementation manner, in another implementation manner of the fourth aspect, the apparatus includes at least a first terminal device and a second terminal device, a channel quality of the first terminal device, and the The absolute value of the difference in channel quality of the two terminal devices is smaller than the channel quality threshold, and the channel quality threshold is a positive integer.

The apparatus for transmitting information provided by the fourth aspect may be used to perform the method in any of the above possible implementations of the second aspect or the second aspect. In particular, the apparatus comprises means for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.

In all the above embodiments of the embodiments of the present invention, N is the total number of layers of data, and J is the total number of resource numbers.

The method for transmitting information in the embodiment of the present invention may be used in a Soft Multiplexing Multiple Access (SMMA) technology. The SMMA technology may be understood to be different when the information is transmitted and mapped after the information is transmitted. The data of different layers is linearly processed on the resource, so that the probability distribution of the amplitude or phase of the superimposed output signal obtained by superimposing the linear processing signals of all layers on the same resource satisfies the Gaussian distribution. Of course, those skilled in the art may not refer to this technology as SMMA, and may also be referred to as other technical names.

The SMMA technique in the embodiment of the present invention can increase the linearity of the modulated signal, so that the probability distribution of the amplitude or phase of the superimposed output signal obtained by superimposing the linear processed signals of all layers on the same resource satisfies the Gaussian distribution, thereby improving the system. Performance gain.

Sparse Code Multiple Access (SCMA) technology is another typical non-orthogonal multiple access and transmission technology. The SCMA technology can independently code, sparse code and hierarchically map data of different layers of different users, and allocate different power allocation coefficients for data of different layers, and superimpose and output signals according to the power distribution coefficient. The essence of SCMA technology is spread spectrum, that is, before the information is transmitted, the spectrum is broadened and linearly processed to obtain a strong anti-interference ability and a high transmission rate. However, when the code rate is high, the spread gain is smaller than the coding gain at the same equivalent code rate, which makes the performance gain of the SCMA technology in the high bit rate scenario limited. The SMMA technology in the embodiment of the present invention can enable the system to obtain a shaping gain, which can further improve the performance gain of the system.

Compared with the NOMA technology, the SMMA technology in the embodiment of the present invention performs linear processing on the modulated signal according to the power allocation coefficient by linear processing, so as to ensure that the user pairing scene is no longer restricted by the far-near pairing user, that is, the channel of the terminal device in the SMMA technology. Unlimited quality, SMMA can be used in any terminal equipment Technology for information transmission.

In a fifth aspect, a system for transmitting information is provided, the system comprising the apparatus for transmitting information provided by the third aspect and the apparatus for transmitting information provided by the fourth aspect.

A sixth aspect provides a method for transmitting information, including: acquiring, by a first device, an N-layer symbol data sequence, where N is a positive integer; and the first device pairs each of the N-symbol data sequences Performing a scrambling process to obtain a scrambled signal; the first device transmitting the scrambled signal to the second device.

In the embodiment of the present invention, each layer of the symbol data sequence is scrambled, and the scrambled signal is obtained according to the processing result, and the scrambled signal is sent to another device, so that another device demodulates the scrambled signal. A method of implementing multi-user detection for information transmission based on scrambling processing can improve the performance gain of the system.

In an embodiment of the embodiments of the present invention, the N-layer symbol data sequence may be generated by the first device.

With reference to the sixth aspect, in an implementation manner of the sixth aspect, when N>1, the first device performs scrambling processing on each layer of the symbol data sequence in the N-layer symbol data sequence to obtain scrambling The signal includes: the first device separately performs scrambling processing on the N-layer symbol data sequence to obtain an N-layer scrambled symbol data signal; and the first device superimposes the N-layer scrambled symbol data signal to obtain The scrambling signal.

In an embodiment of the present invention, when N=1, the first device performs scrambling on the symbol data sequence to obtain a scrambled signal, and may directly send the scrambled signal to the second device, without performing the N layer. Superimposed.

With reference to the sixth aspect and the foregoing implementation manner, in another implementation manner of the sixth aspect, the first device performing scrambling processing on each layer of the symbol data sequence in the N-layer symbol data sequence includes: The first device determines a scrambling sequence corresponding to each layer of symbol data sequence; the first device multiplies the scrambling coefficient in the scrambling sequence by symbol data of the corresponding symbol data sequence.

With reference to the sixth aspect and the foregoing implementation manner, in another implementation manner of the sixth aspect, the length of the scrambling sequence is assumed to be Q, and the data selection index of the symbol data sequence is j, the scrambling sequence The coefficient selection index q satisfies a remainder operation q=j%Q, wherein the coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and a data selection index of the symbol data sequence j is used to indicate symbol data in the symbol data sequence.

The length of the sequence in the embodiment of the present invention refers to the number of elements in the sequence. For example, the length of the scrambling sequence Q refers to the inclusion of Q scrambling coefficients in the scrambling sequence.

With reference to the sixth aspect and the foregoing implementation manner, in another implementation manner of the sixth aspect, the determining, by the first device, the scrambling sequence corresponding to each layer of the symbol data sequence comprises: Determining N scrambling sequence selection indexes, wherein each layer of symbol data sequence corresponds to one scrambling sequence selection index, and each scrambling sequence selection index corresponds to one scrambling sequence; from a predefined scrambling sequence set, selecting and Each of the scrambling sequences selects a scrambling sequence corresponding to the index.

With reference to the sixth aspect and the foregoing implementation manner, in another implementation manner of the sixth aspect, when N>1, at least two of the N scrambling sequence selection indexes are different from each other.

When the scrambling sequence selection index of the multi-layer symbol data sequence is the same, the multi-layer symbol data sequence corresponds to a common scrambling sequence, and additional dimensions need to be added to distinguish the symbol data sequences of different layers, such as the power dimension.

With reference to the sixth aspect and the foregoing implementation manner, in another implementation manner of the sixth aspect, the determining, by the number of layers N of the symbol data sequence, the N scrambling sequence selection indexes comprises: the first device receiving station Determining, by the first device, the N scrambling sequence selection indexes; or, the first device randomly determining the N according to the number value of the first device and the size P of the predefined scrambling sequence set Scrambling sequence selection index; or, first The device cyclically selects the N scrambling sequence selection indexes according to the size P of the predefined set of scrambling sequences. Where P is a positive integer greater than or equal to N.

In an embodiment of the present invention, each first device may have a number value. When the number values of the first device are different, the index may be selected according to different scrambling sequences. In other words, according to the first device. The number value selects a scrambling sequence selection index corresponding to the number value from the predetermined set of scrambling sequences.

In an example of the embodiment of the present invention, when the first device is a user equipment and the second device is a base station, scheduling may be performed by the base station. For example, the base station may determine N scrambling sequence selection indices and transmit N scrambling sequence selection indices to the user equipment.

In an example of the embodiment of the present invention, when the first device is a user equipment and the second device is a base station, the user equipment may further determine N scrambling sequences according to the number of the own number and the size of the predefined set of scrambling sequences. Select an index.

With reference to the sixth aspect and the foregoing implementation manner, in another implementation manner of the sixth aspect, the method further includes: the first device acquiring a base sequence of length P, where P is a positive integer, and P≥2; the first device performs the full arrangement of the elements in the base sequence to obtain Q sequences, wherein Q satisfies Q=P! The first device forms a scrambling matrix of P rows and Q columns according to the Q sequences, wherein each row of the scrambling matrix constitutes a scrambling sequence, and the set of P scrambling sequences is the sum A set of scrambling sequences, the P scrambling sequence selection index being an integer from 0 to P-1.

With reference to the sixth aspect and the foregoing implementation manner, in another implementation manner of the sixth aspect, N is determined by the first device, or N is carried according to the indication information of the second device, or N is predefined.

In an embodiment of the embodiment of the present invention, each of the N scrambling sequence selection indexes may be any one of P scrambling sequence selection indexes.

The first device in the embodiment of the present invention may be a network side device or a user equipment. For example, the first device and the second device are one network side device and the other is a user device.

In the embodiment of the present invention, the size of the scrambling sequence set refers to the number of scrambling sequences in the set of multiple scrambling sequences.

A seventh aspect, a method for transmitting information, includes: receiving, by a second device, a scrambled signal sent by a first device, where the scrambled signal is each of the N-layer symbol data sequences acquired by the first device pair The layer symbol data sequence is subjected to scrambling processing, and N is a positive integer; the second device demodulates the scrambled signal.

With reference to the seventh aspect, in an implementation manner of the seventh aspect, the method further includes: the second device determining an overlay number N of the symbol data sequence; the second device randomly determining the N layer The scrambling sequence selection index corresponding to the symbol data sequence respectively; wherein the demodulating the scrambled signal by the second device by the second device comprises: the second device respectively corresponding to the N-layer symbol data sequence The scrambling sequence selection index demodulates the scrambled signal.

With reference to the seventh aspect and the foregoing implementation manner, in another implementation manner of the seventh aspect, the determining, by the second device, the number of layers N of the symbol data sequence comprises: the second device receiving the first The number of superimposed layers N of the symbol data sequence transmitted by the device; or the second device acquires a predetermined maximum number of superimposed layers, and uses the maximum number of superimposed layers as the superimposed layer number N of the symbol data sequence.

With reference to the seventh aspect and the foregoing implementation manner, in another implementation manner of the seventh aspect, the length of the scrambling sequence is Q, and the data selection index of the symbol data sequence is j, the scrambling sequence The coefficient selection index q satisfies a remainder operation q=j%Q, wherein the coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and a data selection index of the symbol data sequence j is used to indicate symbol data in the symbol data sequence.

With reference to the seventh aspect and the foregoing implementation manner, in another implementation manner of the seventh aspect, when N>1, the scrambling signal is a superposition of the N-layer scrambled symbol data signals, and each layer of scrambled symbol data The signal is obtained by the first device scrambling the symbol data sequence of the corresponding layer.

With reference to the seventh aspect and the foregoing implementation manner, in another implementation manner of the seventh aspect, the method further includes: the second device sending, to the first device, N scrambling sequence selection indexes, where each The layer symbol data sequence corresponds to a scrambling sequence selection index.

The beneficial effects of the steps of the seventh aspect are the same as those of the corresponding steps of the sixth aspect. To avoid repetition, details are not described herein again.

The eighth aspect provides an apparatus for transmitting information, including: a first acquiring unit, configured to acquire an N-layer symbol data signal, where N is a positive integer; and a processing unit, configured to acquire the Each layer of the symbol data sequence in the N-layer symbol data sequence is scrambled to obtain a scrambled signal, and the transmitting unit is configured to send the scrambled signal to the second device.

With reference to the eighth aspect, in an implementation manner of the eighth aspect, when N>1, the processing unit is specifically configured to perform scrambling processing on the N-layer symbol data sequence to obtain an N-layer scrambled symbol data signal. And superimposing the N-layer scrambled symbol data signal to obtain the scrambled signal.

In conjunction with the eighth aspect and the foregoing implementation manner, in another implementation manner of the eighth aspect, the processing unit is specifically configured to determine a scrambling sequence corresponding to each layer of symbol data sequence, where the scrambling sequence is The scrambling coefficient is multiplied by the symbol data of the corresponding symbol data sequence.

With reference to the eighth aspect and the foregoing implementation manner, in another implementation manner of the eighth aspect, the length of the scrambling sequence is Q, and the data selection index of the symbol data sequence is j, the scrambling sequence The coefficient selection index q satisfies a remainder operation q=j%Q, wherein the coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and a data selection index of the symbol data sequence j is used to indicate symbol data in the symbol data sequence.

With reference to the eighth aspect and the foregoing implementation manner, in another implementation manner of the eighth aspect, the processing unit is specifically configured to determine N scrambling sequence selection indexes according to the number of layers N of the symbol data sequence, and from the predefined And selecting, in the set of scrambling sequences, a scrambling sequence corresponding to each of the scrambling sequence selection indexes, wherein each layer of symbol data sequence corresponds to one scrambling sequence selection index, and each scrambling sequence selection index corresponds to one scrambling sequence.

With reference to the eighth aspect and the foregoing implementation manner, in another implementation manner of the eighth aspect, when N>1, at least two of the N scrambling sequence selection indexes are different from each other.

With reference to the eighth aspect and the foregoing implementation manner, in another implementation manner of the eighth aspect, the device further includes a receiving unit, where the receiving unit is configured to receive the N plus The scrambling sequence selects an index; or the processing unit is specifically configured to use, according to the number value of the first device, the predefined scrambling sequence The size of the set P randomly determines the N scrambling sequence selection indexes; or the processing unit is specifically configured to cyclically select the N scrambling sequence selection indexes according to the size P of the predefined scrambling sequence set. . Where P is a positive integer greater than or equal to N.

In conjunction with the eighth aspect and the foregoing implementation manner, in another implementation manner of the eighth aspect, the device further includes: a second acquiring unit, where the second acquiring unit is specifically configured to acquire a base sequence of length P Wherein, P is a positive integer, and P ≥ 2; the processing unit is further configured to perform full alignment of the elements in the base sequence to obtain Q sequences, and form P rows and Q columns according to the Q sequences. Disturbance matrix, where Q satisfies Q=P! Each row of the scrambling matrix constitutes a scrambling sequence, and the set of P scrambling sequences is the set of scrambling sequences, and the P scrambling sequence selection indexes are integers from 0 to P-1.

The apparatus for transmitting information provided by the eighth aspect may be used to perform the method in any of the possible implementation manners of the sixth aspect or the sixth aspect. In particular, the apparatus comprises means for performing the method of any of the sixth aspect or the sixth aspect of the sixth aspect, the beneficial effects of each unit also corresponding to the beneficial effects of the steps of the sixth aspect, in order to avoid duplication , will not be described in detail here.

The ninth aspect provides an apparatus for transmitting information, including: a first receiving unit, configured to receive a scrambled signal sent by a first device, where the scrambled signal is an N-layer symbol data acquired by the first device pair The signal data sequence of each layer in the sequence is subjected to scrambling processing, and N is a positive integer; and a demodulation unit is configured to demodulate the scrambled signal received by the first receiving unit.

With reference to the ninth aspect, in an implementation manner of the ninth aspect, the device further includes: a determining unit, configured to determine, respectively, an additive layer number N of the symbol data sequence and the N layer symbol data sequence respectively And the scrambling unit is configured to demodulate the scrambled signal according to a scrambling sequence selection index corresponding to the N-layer symbol data sequence respectively.

In conjunction with the ninth aspect and the foregoing implementation manner, in another implementation manner of the ninth aspect, the apparatus further includes a second receiving unit, where the second receiving unit is configured to receive the The number of superimposed layers N of the symbol data sequence; or the determining unit is configured to obtain a predetermined maximum number of superimposed layers, and the maximum number of superimposed layers is used as the superimposed layer number N of the symbol data sequence.

With reference to the ninth aspect and the foregoing implementation manner, in another implementation manner of the ninth aspect, the length of the scrambling sequence is assumed to be Q, and the data selection index of the symbol data sequence is j, the scrambling sequence The coefficient selection index q satisfies a remainder operation q=j%Q, wherein the coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and a data selection index of the symbol data sequence j is used to indicate symbol data in the symbol data sequence.

With reference to the ninth aspect and the foregoing implementation manner, in another implementation manner of the ninth aspect, when N>1, the scrambled signal is a superposition of the N-layer scrambled symbol data signal, and each layer scrambles the symbol data. The signal is obtained by the first device scrambling the symbol data sequence of the corresponding layer.

In conjunction with the ninth aspect and the foregoing implementation manner, in another implementation manner of the ninth aspect, the apparatus further includes: a sending unit, configured to send, to the first device, N scrambling sequence selection indexes, where each The layer symbol data sequence corresponds to a scrambling sequence selection index.

The apparatus for transmitting information provided by the ninth aspect may be used to perform any of the seventh aspect or the seventh aspect described above. The method in the way of implementation. In particular, the apparatus comprises means for performing the method of any of the above-mentioned seventh aspect or any of the possible implementations of the seventh aspect, the beneficial effects of each unit also corresponding to the beneficial effects of the steps of the seventh aspect, in order to avoid duplication , will not be described in detail here.

DRAWINGS

1 is a schematic diagram of a scenario of a communication system to which an embodiment of the present invention is applicable.

FIG. 2 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention.

FIG. 3 is a schematic flowchart of a method for transmitting information according to another embodiment of the present invention.

4 is a block diagram of an apparatus for transmitting information according to an embodiment of the present invention.

FIG. 5 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention.

FIG. 6 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention.

FIG. 7 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention.

FIG. 8 is a schematic interaction flowchart of a method for transmitting information according to an embodiment of the present invention.

FIG. 9 is a block diagram of an apparatus for transmitting information according to an embodiment of the present invention.

FIG. 10 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention.

FIG. 11 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention.

FIG. 12 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

It should be understood that the technical solution of the embodiments of the present invention can be applied to a multi-carrier transmission system adopting a non-orthogonal multiple access technology, for example, using orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing). OFDM), Filter Bank Multi-Carrier (FBMC), Generalized Frequency Division Multiplexing (GFDM), Filtered Orthogonal Frequency Division Multiplexing (Filtered-OFDM, F-OFDM) system, etc. . It should be understood that the embodiment of the present invention is only described by using a communication system using the SMMA technology as an example, but the embodiment of the present invention is not limited thereto.

The communication system shown in FIG. 1 may include a network side device 101 and a plurality of terminal devices, for example, three terminal devices 102, 103, 104 are shown in FIG. The network device may be a wireless communication transmitting device and/or a wireless communication receiving device. The terminal device may also be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device can encode and modulate the data for transmission. Specifically, the wireless communication transmitting device can acquire a certain number of data bits to be transmitted to the wireless communication receiving device through the channel. Such data bits can be included in the transport block of data.

In the embodiment of the present invention, the terminal device may communicate with one or more core networks via a radio access network (RAN), and the terminal device may be referred to as an access terminal or a user equipment (User Equipment, UE). , subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless Communication-enabled handheld devices, computing devices, or other linear processing devices connected to wireless modems, in-vehicle devices, wearable Equipment and terminal equipment in future 5G networks.

The embodiments of the present invention can be applied to various communication scenarios, such as information transmission of Device to Device (D2D), information transmission of Machine to Machine (M2M), and macro-micro communication.

In the embodiment of the present invention, the network side device may be used to communicate with the terminal device, where the network side device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA). Base Transceiver Station (BTS), which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or a Long Term Evolution (LTE) system. The evolved base station (Evolutional Node B, eNB or eNodeB), or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a base station device in a future 5G network.

According to the embodiment of the present invention, the base station and the multiple UEs may use the non-orthogonal multiple access technology to communicate through the air interface, and the multiple UEs may reuse the same time-frequency resource when communicating with the base station. Non-orthogonal air interface access allows multiple codewords to be superimposed on a single resource. A resource may be defined as a resource granularity jointly defined by at least two dimensions, such as symbols on the time domain, subcarriers in the frequency domain, and antenna ports on the airspace.

The communication system of the embodiment of the present invention may be a multiple access system, for example, the system is an SMMA system, the network side device is, for example, a base station, and the terminal device is, for example, a terminal device. The embodiment of the present invention is described by taking only the SMMA system, the base station, and the terminal device as an example, but the embodiment of the present invention is not limited thereto.

101. The base station determines an N layer modulated signal.

The base station can determine an N-layer modulated signal, N is the total number of layers of transmitted data, and N is a positive integer greater than or equal to two. For example, N may be obtained according to information reported by the terminal device to the base station.

The N-layer modulated signal here may be from one terminal device or from multiple terminal devices. The modulated signal is obtained by encoding, serial-to-parallel, and then modulating the transport block of the terminal device. The N-layer modulated signal may be obtained by serial-to-parallel conversion modulation mapping of the transmission blocks of the same terminal device, or may be obtained by serial-to-parallel conversion modulation mapping of transmission blocks of different terminal devices. The transport block may be one or more, and as long as there is one transport block, the multi-layer modulated signal can be obtained by serial-to-parallel conversion.

The base station separately performs modulation mapping on the bit sequences of each layer of data, so that each layer of the bit sequence can be mapped to different resources, that is, the modulation signals of different layer bit sequence mappings on any of the resources, thereby obtaining the resources j. The modulation signal x _{i,j of} the i-th bit sequence, where i=1, 2, . . . N, j=1, 2, . . . , J, J is the total number of resource numbers, and J is a positive integer.

102. The base station linearly processes and superimposes the modulated signals on the specific resources to obtain a superimposed output signal.

The base station may separately perform linear processing on the modulated signals of each of the N layers of modulated signals on different resources to obtain a linear processed signal of the modulated signals of each layer on different resources. Here, only the processing of the modulated signal on a specified resource (for example, the target resource) by the base station is taken as an example. The processing on other resources is the same as the processing of the specified resource, and will not be described here.

The base station can linearly process each layer of the modulated signal on the specified resource to obtain a linearly processed signal for each layer. The linearly processed signals of all layers are added to obtain a superimposed output signal. Each layer of modulated signals can correspond to different constellation points, and multiple superimposed output signals can be obtained by linear processing and superposition. When the probability distribution of the amplitude or phase of the plurality of superimposed output signals satisfies the Gaussian distribution, the performance gain of the system can be further improved.

For example, the base station may first obtain a linear processing coefficient of the i-th layer data on the jth resource.

Where i=1, 2,...N, j is a positive integer. Linear processing coefficient when the jth resource is the specified resource

There can be N values. Wherein, the N linear processing coefficients may be empirical values. A modulation vector composed of different layers on a specified resource is linearly processed by a row vector composed of N linear processing coefficients. Then select from the determined row vectors

A coefficient that performs linear prelinear processing as a modulation signal of the i-th layer on the jth resource. among them,

The ith element of the row vector.

In an embodiment of the present invention, the base station may determine a superposition coefficient vector group according to the N linear processing coefficients, where the number of elements of the vector group is M, M=N! Each element in the vector group is a row vector, and different elements in the vector group (ie, different row vectors) correspond to different arrangements of N linear processing coefficients. The base station may select a row vector composed of linear pre-linear processing coefficients when all layer data is transmitted on the j-th resource according to the vector group. For example, the row vector corresponding to the jth resource may be a vector element randomly selected from the vector group according to a certain rule, and may also be selected according to the relationship between the resource numbers j and M, for example, the remainder operation according to j and M Obtain.

The linear processing coefficient that the base station can determine when transmitting the ith layer modulated signal on a designated resource (eg, the jth resource)

After, according to

Linearly processing the mapping sequence x _i,j of the i-th layer modulation signal on the j-th resource to obtain a linear processing signal of the i-th layer modulation signal on the j-th resource

After obtaining the linear processing signals of all layers on the specified resource, the base station can superimpose the linear processing signals of all layers to obtain a superimposed output signal.

The base station may determine the power allocation coefficients of the modulated signals of different layers after obtaining the linear processed signals of the different layer modulated signals on different resources, and allocate power allocation coefficients to the linear processed signals on different layers and different resources, and according to the power allocation. The coefficients superimpose the linearly processed signals of different layers to obtain a superimposed output signal. For example, according to the power allocation coefficient α _{i of} the i-th layer modulation signal on the j-th resource, it can be determined that the output signal when all layer signals are transmitted on the j-th resource is

The base station may also determine an output signal when different values are taken to determine that the superimposed output signal when all layer signals are transmitted on all resources is X=[x ₁ , x ₂ , . . . x _j ..., x _J ], where J is a resource. The total number of the number.

The power allocation coefficient here may be determined according to the method used in the NOMA technology or the SCMA technology, or may be determined in other manners, and may not be limited herein. For example, the power allocation coefficient can be set according to the near and far characteristics of the terminal device.

In an embodiment of the embodiments of the present invention, the base station linearly processes and superimposes the modulated signals to obtain the superimposed output signals in a plurality of manners.

For example, the base station can process and superimpose the modulated signals of different layers according to the linear processing coefficients to obtain a superimposed output signal.

For another example, the base station may further process and superimpose the modulated signals of different layers according to the linear processing coefficient and the power allocation coefficient to obtain a superimposed output signal. In this way, increasing the power allocation coefficient can make the distance of different terminal devices no longer limited.

In an embodiment of the embodiment of the present invention, the linear pre-linear processing of the signal and the order of the power allocation coefficients of the network side device can be exchanged, that is, the network side device can perform linear processing on the signal first, and then linearly process the signal. The signal distributes the power distribution coefficient and finally outputs the superimposed output signal. The network side device may also first allocate a power allocation coefficient to the signal, then allocate a linear processing coefficient to the data on different resources of different layers, and finally output the superimposed output signal.

When the modulation signals of different layers are linearly processed, and the obtained amplitude or phase of the linear processed signals of different layers are different, the correct demodulation of the data of different layers can be ensured by the receiving side, so that the channels between the terminal devices can be made. The quality is no longer limited, that is, the terminal devices are no longer limited by the near-field matching scenario.

103. The base station sends a superimposed output signal to the terminal device.

The base station may send the superimposed output signal to the terminal device, and the base station may separately send the superimposed output signal when all layer signals are transmitted to the terminal device on each resource. There are at least one terminal device here. When the N layer data in step 101 is data obtained by the transport block of the same terminal device, step 103 may only transmit the superimposed output signal to the terminal device.

In addition, the base station may further send N, a Modulation and Encoding Strategy (MCS) of each layer of data, and a data layer number i obtained by the transmission block of the terminal device to the terminal device, so that the terminal device receives the superimposed output. After the signal, the received signal is decoded according to N, MCS and i.

104. The terminal device demodulates the received superimposed output signal.

After receiving the superimposed output signal corresponding to each target resource sent by the base station, the terminal device may demodulate the superimposed output signal. The terminal device may receive a superimposed output signal on each target resource. When the modulation signal of each layer corresponds to multiple constellation points, the terminal device may receive a plurality of superimposed output signals.

The terminal device may demodulate each superimposed output signal according to a linear processing coefficient of each of the N layers of modulated signals on the different resources, wherein the linear processing coefficient corresponds to each target resource.

The terminal device may further demodulate each superposed output signal according to a linear processing coefficient and a power allocation coefficient of each of the N layers of the modulated signals on the different resources, wherein the linear processing coefficient and the power allocation coefficient Corresponding to each of the target resources described. At this time, the signals of users with different channel qualities can be distinguished by the power allocation coefficient, that is, the far-near matching users can be further distinguished by allocating the power allocation coefficients.

201. Acquire at least one transport block.

The base station can acquire at least one transport block that needs to be transmitted to the terminal device. It should be understood that the transport blocks herein may be one or multiple.

When there are multiple transport blocks, multiple transport blocks may be from the same terminal device or from different terminal devices.

202: Encode the obtained transport block.

The base station can encode the obtained transport block to obtain a coded transport block.

When the number of transport blocks acquired in step 201 is plural, the plurality of transport blocks may be separately encoded. In FIG. 3, only one transport block is taken as an example for illustration. The linear processing manner of each transport block in the plurality of transport blocks is similar to the linear processing manner of one transport block in FIG. 3, and details are not described herein again.

203. Perform serial-to-parallel conversion on the encoded data.

The base station can perform serial-to-parallel conversion on the encoded data to obtain parallel multi-layer data. In FIG. 3, two layers of data are taken as an example for illustration. The linear processing of each layer of data is similar, and will not be further described herein.

204. Modulate and map the multi-layer transport blocks separately.

The base station can separately perform modulation mapping on the bit sequence of the multi-layer data to obtain the adjustment of the i-th layer data on the j-th resource. Signal. Where i = 1, 2, ... N, j = 1, 2, ... J, J is the total number of resource numbers, and J is a positive integer, and N is a positive integer.

205. Perform linear processing on modulated signals of different layers on different resources.

When the base station can take different values for i and j, all modulated signals of the i-th layer data on the j-th resource are linearly processed, for example, such that each modulated signal is multiplied by a linear processing coefficient to obtain an i-th on the j-th resource. Linear processing of layer data.

The base station may first acquire linear processing coefficients of the i-th layer data on the j-th resource, and then linearly process the modulated signals according to the linear processing coefficients.

The resources in the embodiment of the present invention may be multiple, and the manner in which the signals are linearly processed and transmitted on each resource is similar. To avoid repetition, details are not repeatedly described.

206, assigning a power allocation coefficient to the linear processed signal.

The base station may first obtain power allocation coefficients of different layer data, and then allocate power allocation coefficients to the linear processing signals of different layers according to the power allocation coefficients.

207. Determine an output signal and send the output signal to the terminal device.

The base station can determine the output signal according to the power allocation coefficient and the linear processing signal, and the output signal on the same resource can be a superimposed output signal obtained by linear processing and superposition of all layer modulation signals on the resource. For example, the base station may determine, according to the power allocation coefficient of the i-th layer data on the j-th resource and the linear processing signal of the i-th layer data on the j-th resource, a superimposed output signal when all layer data is transmitted on the j-th resource, And transmitting the superimposed output signal to the terminal device.

The probability distribution of the amplitude or phase of the plurality of superimposed output signals obtained for different modulation channels should satisfy the Gaussian distribution, so that the superimposed output signals of the same resource can obtain the shaping gain, thereby improving the performance gain of the system.

Steps 201 to 207 of the method of transmitting information of FIG. 3 may be performed by a network side device, for example, by a base station. The following step 208 can be performed by the terminal device.

208. The terminal device demodulates the received superimposed output signal.

Step 208: The specific implementation method for demodulating the received superimposed signal by the terminal device may refer to step 104. To avoid repetition, details are not described herein again.

The steps of the embodiment of FIG. 3 in the embodiment of the present invention correspond to the steps of the apparatus in the embodiment of FIG. 2, and details are not described herein again to avoid repetition.

The method of transmitting information according to an embodiment of the present invention is described in detail above with reference to FIG. 2 and FIG. 3. Hereinafter, an apparatus for transmitting information according to an embodiment of the present invention will be described in detail with reference to FIG. 4 to FIG.

4 is a block diagram of an apparatus for transmitting information according to an embodiment of the present invention. The apparatus 10 of Figure 4 can be a network side device, such as a base station. In some scenarios, such as a D2D scenario, device 10 may also be another terminal device. The device 10 may include an acquisition unit 11, a processing unit 12, and a transmission unit 13.

The obtaining unit 11 is configured to obtain the modulated N-layer modulated signal to be transmitted to the at least one terminal device, where N is a positive integer greater than or equal to 2.

The processing unit 12 is configured to multiply each layer of the modulated signal acquired by the acquiring unit on the target resource by a linear processing coefficient corresponding to the layer, obtain a linear processing signal of each layer, and add linear processing signals of all layers, Get Superimpose the output signal. Among them, the linear processing coefficient is a complex number.

The sending unit 13 is configured to send, by using the standard resource, the superimposed output signal obtained by the processing unit to the at least one terminal device.

In the embodiment of the present invention, the multi-layer signals of the at least one terminal device are separately modulated, and the modulated signals of each of the N-layer modulated signals are linearly processed and superimposed to obtain a superimposed output signal on the target resource, and may be The superimposed output signal is sent to the terminal device, which can improve the performance gain of the system.

The apparatus 10 for transmitting information according to an embodiment of the present invention may correspond to a network side device in a method of transmitting information according to an embodiment of the present invention. The respective units/modules and other operations or functions in the device 10 are respectively used to implement the corresponding processes of the network side device (for example, the base station) in the method flowchart 2 and FIG. 3, and are not described herein again for brevity.

FIG. 5 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention. The device 20 of Figure 5 can be a terminal device. In some scenarios, such as a macro-micro communication scenario, device 20 may also be another network-side device. The device 20 may include a receiving unit 21 and a demodulating unit 22.

The receiving unit 21 is configured to receive, by the target resource, a superimposed output signal sent by the network side device. The superimposed output signal is a sum of each layer of the N-modulation signal multiplied by a linear processing coefficient corresponding to the layer, the linear processing coefficient is a complex number, and N is a positive integer greater than or equal to 2.

The demodulation unit 22 is configured to demodulate the superimposed output signal obtained by the receiving unit according to the linear processing coefficient of each layer of the modulated signal.

In the embodiment of the present invention, the terminal device can receive the superimposed output signal sent by the network side device, and demodulate the superimposed output signal, and the linear processing coefficient of the superimposed signal is a complex number, which can improve the performance gain of the system.

The apparatus 20 for transmitting information according to an embodiment of the present invention may correspond to a terminal apparatus in a method of transmitting information according to an embodiment of the present invention. The respective units/modules and other operations or functions in the device 20 are respectively implemented in order to implement the corresponding processes of the terminal device in the method flowchart 2 and FIG. 3, and are not described herein again for brevity.

FIG. 6 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention. The apparatus 30 of Figure 6 can be a network side device, such as a base station. In some scenarios, such as a D2D scenario, device 30 may also be another terminal device. Apparatus 30 can include a transmitter 31, a processor 32, and a memory 33.

The processor 32 is configured to acquire the modulated N-layer modulated signal to be transmitted to the at least one terminal device, where N is a positive integer greater than or equal to 2.

The processor 32 is further configured to multiply each layer of the N-modulation signal by a linear processing coefficient corresponding to the layer on each target resource in the target resource set to obtain a linear processing signal of each layer, and The linearly processed signals of all layers are added to obtain a superimposed output signal corresponding to each of the target resources, wherein the linear processing coefficients are complex numbers.

The transmitter 31 is configured to send, by each target resource, a superimposed output signal corresponding to the target resource to the at least one terminal device.

The apparatus 30 for transmitting information according to an embodiment of the present invention may correspond to a network side device in the method of transmitting information according to an embodiment of the present invention. The respective units/modules and other operations or functions in the device 30 are respectively used to implement the corresponding processes of the network side device (for example, the base station) in the method flowchart 2 and FIG. 3, and are not described herein again for brevity.

The various components of the above described device 30, such as the transmitter 31, the processor 32 and the memory 33, may be routed through the bus system 34 are coupled together. The bus system 34 may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure. The above-described memory 33 may include read only memory and random access memory, and provides instructions and data to the processor 32. A portion of the memory 33 may also include a non-volatile random access memory. For example, the memory 33 can store aggregated configuration information. The processor 32 can be used to execute the instructions stored in the memory, and when the processor executes the instructions, the processor can execute the corresponding processes of the corresponding devices in the foregoing method embodiments in FIG. 2 and FIG. 3. For brevity, no further description is provided herein. .

FIG. 7 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention. The device 40 of Figure 7 can be a terminal device. In some scenarios, such as in a macro-micro communication scenario, device 40 may also be another network-side device. Apparatus 40 can include a receiver 41, a processor 42, and a memory 43.

The receiver 41 is configured to receive, by each target resource in the target resource set, a superimposed output signal corresponding to the target resource that is sent by the network side device. The superimposed output signal is a sum of each layer of the N-modulation signal multiplied by a linear processing coefficient corresponding to the layer, the linear processing coefficient is a complex number, and N is a positive integer greater than or equal to 2;

Processor 42 can demodulate the M superimposed output signals.

The apparatus 40 for transmitting information according to an embodiment of the present invention may correspond to a terminal apparatus in a method of transmitting information according to an embodiment of the present invention. The respective units/modules and other operations or functions in the device 40 are respectively implemented in order to implement the corresponding processes of the terminal device in the method flowchart 2 and FIG. 3, and are not described herein again for brevity.

The various components of device 40 described above, such as receiver 41, processor 42 and memory 43, may be coupled together by bus system 44. The bus system 44 may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure. The memory 43 described above may include read only memory and random access memory and provide instructions and data to the processor 42. A portion of the memory 43 may also include a non-volatile random access memory. For example, the memory 43 can store aggregated configuration information. The processor 42 can be used to execute the instructions stored in the memory, and when the processor executes the instructions, the processor can execute the corresponding processes of the corresponding devices in the foregoing method embodiments in FIG. 2 and FIG. 3. For brevity, no further description is provided herein. .

FIG. 8 is a schematic interaction flowchart of a method for transmitting information according to an embodiment of the present invention. In the system for transmitting information in the embodiment of the present invention, the system includes at least a first device and a second device. In an embodiment of the present invention, when the first device is a base station, the second device may be a UE; when the first device is a UE, the second device may be a base station.

301. The first device acquires an N-layer symbol data sequence.

In an embodiment of the embodiment of the present invention, the N-layer symbol data sequence may be from the same first device or from different first devices. In addition, the N-layer symbol data sequence may be obtained by the same transport block of the same first device, or may be obtained by different transport blocks of the same first device. For example, the N-layer data may be obtained by serial-to-parallel conversion only after encoding the same transport block of the same first device, or may be obtained by serial-to-parallel conversion for different transport blocks of the same first device, or may be different. The different transport blocks of the first device are encoded and then obtained by serial-to-parallel conversion.

As an embodiment of the present invention, the N-layer symbol data sequence in the embodiment of the present invention may be obtained by: acquiring, by the first device, at least one transport block that needs to be transmitted to the second device, and performing the obtained transport block The encoding, the serial conversion are converted into multi-layer data, and the bit sequence of the multi-layer data is separately modulated and mapped, thereby obtaining an N-layer symbol data sequence.

The N in the embodiment of the present invention may be determined by the first device, for example, the first device is a base station, and the second device is a UE, and the first device sends the indication information to the second device, where the indication information includes the number of layers N. The N may be the first device that receives the indication information of the second device and is determined according to the indication information. For example, the first device is the UE, the second device is the base station, and the second device sends the indication information to the first device, where the indication information includes The number of layers sent is N. N can also be a predefined number of layers.

302. The first device performs scrambling processing on each layer of the symbol data sequence in the N-layer symbol data sequence to obtain a scrambled signal.

When N>1, the first device scrambles each layer of the symbol data sequence in the N-layer symbol data sequence to obtain a scrambled symbol data signal corresponding to each layer, and superimposes the N-layer scrambled symbol data signal. Scramble the signal. For example, when N>1, the scrambling signal is expressed as

Where x _{j is} the superimposed output signal corresponding to the data selection index _{j of} the symbol data sequence,

The data of the nth layer symbol data sequence selects the output signal of the modulation symbol corresponding to the index j,

Is the coefficient of n-th layer scrambled symbol data corresponding to the selected index j, idx n-th layer data symbol scrambling sequence corresponding to a sequence selected index _n.

When N=1, the first device scrambles the symbol data sequence to obtain a scrambled signal, and can directly send the scrambled signal to the second device, without performing superposition of the N layer.

In an embodiment of the present invention, the scrambling process for each layer of the symbol data sequence may first determine a scrambling sequence corresponding to each layer of the symbol data sequence, and then multiply the scrambling coefficient in the scrambling sequence by the corresponding symbol data. The symbolic data of the sequence.

In an embodiment of the present invention, the first device may determine a scrambling sequence corresponding to each layer of symbol data sequence by determining N scrambling sequence selection indexes according to the number of layers N of the symbol data sequence, where each layer The symbol data sequence corresponds to a scrambling sequence selection index, and each scrambling sequence selection index corresponds to one scrambling sequence. And from the predefined set of scrambling sequences, the scrambling sequence corresponding to each scrambling sequence selection index is selected.

In an embodiment of the present invention, when N>1, at least two scrambling sequence selection indexes in the N scrambling sequence selection indexes are different from each other.

There are various ways to determine the index of the N scrambling sequence selection in the embodiment of the present invention.

For example, when the first device is the UE and the second device is the base station, the UE may receive the N scrambling sequence selection indexes scheduled by the base station. Specifically, the base station may send N scrambling sequence selection indexes to the UE.

For example, when the first device is the UE and the second device is the base station, the UE may further determine N scrambling sequence selection indexes according to the device number value of the UE and the size P of the predefined scrambling sequence set. Specifically, the UE may find a set of scrambling sequences corresponding thereto according to its own number value, and determine N scrambling sequence selection indexes from the set of scrambling sequences, and each scrambling sequence selection index may be used to indicate scrambling. Any one of the scrambling sequences in the sequence set.

For another example, when the first device is a base station and the second device is a UE, the base station may cyclically select N scrambling sequence selection indexes according to the size P of the predefined set of scrambling sequences.

In an embodiment of the present invention, the scrambling sequence set may be a scrambling matrix formed by Q sequences obtained by fully arranging elements in a base sequence of length P. Specifically, the first device can obtain A base sequence of length P, and the elements in the base sequence are fully arranged to obtain Q sequences, which constitute a scrambling matrix of P rows and Q columns, wherein P is a positive integer and P ≥ 2. Each row of the scrambling matrix constitutes a scrambling sequence, P rows have a total of P scrambling sequences, P sets of scrambling sequences constitute a set of scrambling sequences, and P scrambling sequence selection indexes are from 0 to P-1 The integer.

For example, determining the number of superimposed transport layers P, and obtaining a base sequence of length P, the base sequence is a column vector as follows:

According to the above base sequence

The elements are all arranged, get P! Arrange the sequence, use all the permutation sequences as the column vector of a scrambling matrix, construct a scrambling matrix of size P*Q, where Q satisfies Q=P! . For example, a scrambling matrix consisting of a base sequence {β ₀ , β ₁ , β ₂ } of length 3 is 3*6:

A row vector of the scrambling matrix is used as a scrambling sequence, and the P*Q scrambling matrix corresponds to a set of scrambling sequences of size P, each scrambling sequence having a length of Q.

Assuming that s ⁿ is the modulation output signal corresponding to the nth layer, and the base sequence length is N, then the design of the base sequence needs to satisfy at least one of the following conditions: (1) N-layer symbol data linear superimposed output

The corresponding constellation points have the largest Euclidean distance, and (2) the N-layer symbol data is linearly superimposed and output.

At least one of the amplitude and phase of the corresponding constellation point satisfies a Gaussian distribution, and (3) the elements of the base sequence are plural

At least one of the amplitude and phase corresponding to different elements is different, where A _P is amplitude information,

For phase information, for example, a sequence of length 3 may be {0.6071, 0.9809, 1.2919}.

In an embodiment of the present invention, scrambling the layer symbol data sequence by using the scrambling sequence comprises: determining a coefficient selection index of the corresponding scrambling sequence according to the data selection index of the symbol data sequence, according to the scrambled coefficient The selection index determines the scrambling coefficient, and linearly multiplies the data symbol corresponding to the data selection index of the symbol data sequence and the corresponding scrambling coefficient.

The index of the symbol data sequence in the embodiment of the present invention may be determined by the scrambling sequence and the coefficient selection index of the scrambling sequence. For example, the symbol data of the symbol data sequence corresponding to the scrambling coefficient in the scrambling sequence can be determined by assuming that the length of the scrambling sequence is Q, the coefficient selection index of the scrambling sequence is q, and the index of the symbol data sequence is j, q satisfies the remainder operation q=j%Q, wherein the coefficient selection index of the scrambling sequence is used to indicate the scrambling coefficient in the scrambling sequence, and the index of the symbol data sequence is used to indicate the symbol data in the symbol data sequence.

303. The first device sends a scrambling signal to the second device, and the second device receives the scramble signal.

After the first device obtains the scrambled signal through step 302, the scrambled signal may be sent to the second device, so that the second device demodulates the scrambled signal and the like.

304. The second device demodulates the received scrambled signal.

After receiving the scrambling signal, the second device may demodulate the scrambled signal according to the scrambling sequence selection index corresponding to the superimposed layer number N and the N layer symbol data sequence of the symbol data sequence respectively.

In an embodiment of the embodiment of the present invention, the second device may determine the number of overlay layers N in the following manner. The second device may receive the superimposed layer number N of the symbol data sequence sent by the first device, and the second device may further obtain a predefined maximum number of superimposed layers, and use the maximum superimposed layer number as the superimposed layer number N of the symbol data sequence. .

When the first device is the UE and the second device is the base station, the scrambling sequence selection index in the embodiment of the present invention may be The UE is determined and scheduled by the base station, so that the base station can determine and send N scrambling sequence selection indexes to the UE, wherein each layer of symbol data sequence corresponds to a scrambling sequence selection index, and the scrambling sequence selection index can find the corresponding scrambling. sequence.

The debit in the embodiment of the present invention can also refer to the modulation and coding strategy MCS of each layer of the symbol data sequence. The specific decoding method can refer to the method in the prior art, and details are not described herein again.

The embodiment of the present invention implements multi-user detection based on the scrambling process, and does not limit the distance between the users, so that the application performance of the multiple access technology can be expanded while improving the performance gain of the system, and is not limited to the near and far. Pair users.

FIG. 9 is a block diagram of an apparatus for transmitting information according to an embodiment of the present invention. The device 50 of FIG. 9 may be the first device in the method flow of FIG. 8, and may be a network side device, such as a base station, or a terminal device. The device 50 may include a first acquisition unit 51, a processing unit 52, and a transmission unit 53.

The first obtaining unit 51 is configured to acquire an N-layer symbol data signal, where N is a positive integer.

The processing unit 52 is configured to perform scrambling processing on each layer of the symbol data sequence in the N-layer symbol data sequence acquired by the first acquiring unit to obtain a scrambled signal.

The transmitting unit 53 is configured to send a scramble signal to the second device.

The apparatus 50 for transmitting information according to an embodiment of the present invention may correspond to the first apparatus in the method of transmitting information of the embodiment shown in FIG. 8 of the embodiment of the present invention. The respective units/modules and other operations or functions in the device 50 are respectively implemented in order to implement the corresponding processes of the first device in the method flowchart 5. For brevity, no further details are provided herein.

FIG. 10 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention. The device 60 of FIG. 10 may be a network side device or a terminal device. The device 60 may include a first receiving unit 61 and a demodulating unit 62.

The first receiving unit 61 is configured to receive a scrambling signal sent by the first device, where the scrambling signal is obtained by performing scrambling processing on each layer of the symbol data sequence in the acquired N-layer symbol data sequence by the first device, where N is a positive integer. .

The demodulation unit 62 is configured to demodulate the scrambled signal received by the first receiving unit.

The apparatus 60 for transmitting information according to an embodiment of the present invention may correspond to the second apparatus in the method of transmitting information of the embodiment shown in FIG. 8 of the embodiment of the present invention. The respective units/modules and other operations or functions in the device 60 are respectively implemented in order to implement the corresponding processes of the second device in the method flowchart 5. For brevity, no further details are provided herein.

FIG. 11 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention. The device 70 of Figure 11 can be the first device in the method embodiment of Figure 7. Device 70 may include a transmitter 71, a processor 72, and a memory 73.

The processor 72 is configured to acquire an N-layer symbol data signal, and perform scrambling processing on each layer of the symbol data sequence in the acquired N-layer symbol data sequence to obtain a scrambled signal. Where N is a positive integer.

The transmitter 71 is configured to transmit a scrambled signal to the second device.

The various components of device 70 described above, such as transmitter 71, processor 72, and memory 73, may be coupled together by bus system 74. The bus system 74 may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure. The memory 73 described above may include read only memory and random access memory and provide instructions and data to the processor 72. A portion of the memory 73 may also include a non-volatile random access memory. For example, the memory 73 can store aggregated configuration information. The processor 42 can be used to execute the instructions stored in the memory, and the processor can execute the corresponding process of the first device in FIG. 7 in the foregoing method embodiment. For brevity, no further details are provided herein.

The apparatus 70 for transmitting information according to an embodiment of the present invention may correspond to the first apparatus in the method of transmitting information according to an embodiment of the present invention. The respective units/modules and other operations or functions in the device 70 are respectively implemented in order to implement the corresponding processes of the first device in the method flowchart 7. For brevity, no further details are provided herein.

FIG. 12 is a block diagram of an apparatus for transmitting information according to another embodiment of the present invention. The device 80 of Figure 12 can be the second device of the method embodiment of Figure 7. Apparatus 80 can include a receiver 81, a processor 82, and a memory 83.

The receiver 81 is configured to receive a scrambled signal transmitted by the first device. The scrambling signal is obtained by performing scrambling processing on each layer of the symbol data sequence in the acquired N-layer symbol data sequence by the first device, where N is a positive integer.

The processor 82 is operative to demodulate the received scrambled signal.

The various components of device 80 described above, such as receiver 81, processor 82, and memory 83, may be coupled together by bus system 84. The bus system 84 can include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure. The memory 83 described above may include read only memory and random access memory and provide instructions and data to the processor 82. A portion of the memory 83 may also include a non-volatile random access memory. For example, the memory 83 can store aggregated configuration information. The processor 82 can be used to execute the instructions stored in the memory, and the processor can execute the corresponding process of the second device in FIG. 7 in the foregoing method embodiment. For brevity, no further details are provided herein.

The apparatus 80 for transmitting information according to an embodiment of the present invention may correspond to the second apparatus in the method of transmitting information according to an embodiment of the present invention. The respective units/modules and other operations or functions in the device 80 are respectively implemented in order to implement the corresponding processes of the second device in the method flowchart 7. For brevity, no further details are provided herein.

Those skilled in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the steps and composition of the various embodiments have been generally described in terms of function in the foregoing description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present invention.

The methods or steps described in connection with the embodiments disclosed herein may be implemented in hardware, a software program executed by a linear processor, or a combination of both. Software programs can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, A CD-ROM, or any other form of storage medium known in the art.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited thereto. A person skilled in the art can make various equivalent modifications or substitutions to the embodiments of the embodiments of the present invention, and such modifications or substitutions are within the scope of the embodiments of the present invention.

Claims

A method for transmitting information, comprising:

The first device acquires an N-layer symbol data sequence, where N is a positive integer;

The first device performs scrambling processing on each layer of the symbol data sequence in the N-layer symbol data sequence to obtain a scramble signal;

The first device sends the scrambled signal to a second device.
The method according to claim 1, wherein, when N>1, the first device performs scrambling processing on each layer of the symbol data sequence in the N-layer symbol data sequence, and obtaining the scrambled signal comprises:

The first device performs scrambling processing on the N-layer symbol data sequence to obtain an N-layer scrambled symbol data signal;

The first device superimposes the N-layer scrambled symbol data signals to obtain the scrambled signals.
The method according to claim 1 or 2, wherein the scrambling process of each layer of the symbol data sequence in the N-layer symbol data sequence by the first device comprises:

Determining, by the first device, a scrambling sequence corresponding to each layer of symbol data sequence;

The first device multiplies the scrambling coefficient in the scrambling sequence by the symbol data in the corresponding symbol data sequence.
The method according to claim 3, wherein the length of the scrambling sequence is Q, the data selection index of the symbol data sequence is j, and the coefficient selection index q of the scrambling sequence satisfies the remainder operation q =j%Q, wherein a coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and a data selection index j of the symbol data sequence is used to indicate the symbol data sequence Symbol data.
The method according to claim 3 or 4, wherein the determining, by the first device, the scrambling sequence corresponding to each layer of symbol data sequence comprises:

Determining N scrambling sequence selection indexes according to the number of layers N of the symbol data sequence, wherein each layer of symbol data sequence corresponds to one scrambling sequence selection index, and each scrambling sequence selection index corresponds to one scrambling sequence;

From the predefined set of scrambling sequences, a scrambling sequence corresponding to each of the scrambling sequence selection indices is selected.
The method according to claim 5, wherein when N>1, at least two of the N scrambling sequence selection indexes are different from each other.
The method according to claim 5 or 6, wherein the determining the N scrambling sequence selection indexes according to the number of layers N of the symbol data sequence comprises:

Receiving, by the first device, the N scrambling sequence selection indexes indicated by the second device; or

Determining, by the first device, the N scrambling sequence selection indexes according to the number value of the first device and the size P of the predefined scrambling sequence set, where P is a positive integer greater than or equal to N; or ,

The first device cyclically selects the N scrambling sequence selection indexes according to the size P of the predefined set of scrambling sequences.
The method of any of claims 5-7, wherein the method further comprises:

The first device acquires a base sequence of length P, where P is a positive integer, and P≥2;

The first device performs full alignment of the elements in the base sequence to obtain Q sequences, where Q satisfies Q=P! ;

The first device forms a scrambling matrix of P rows and Q columns according to the Q sequences, wherein each row of the scrambling matrix constitutes a scrambling sequence, and the set of P scrambling sequences is the scrambling Sequence set, the P plus The scrambling sequence selection index is an integer from 0 to P-1.
The method according to any one of claims 1-8, wherein N is determined by the first device, or N is carried according to the indication information of the second device, or N is a pre- The number of sent layers defined.
A method for transmitting information, comprising:

The second device receives the scrambled signal sent by the at least one first device, where the scrambled signal is obtained by performing scrambling processing on each layer of the symbol data sequence in the acquired N-layer symbol data sequence by the first device, where N is Positive integer

The second device demodulates the scrambled signal.
The method of claim 10, wherein the method further comprises:

The second device acquires the number of superposition layers N of the symbol data sequence;

The second device randomly determines a scrambling sequence selection index corresponding to the N-layer symbol data sequence respectively;

among them,

Demodulating the scrambled signal by the second device includes:

The second device demodulates the scrambled signal according to a scrambling sequence selection index corresponding to the N-layer symbol data sequence respectively.
The method according to claim 11, wherein the determining, by the second device, the number of layers N of the sequence of symbol data comprises:

Receiving, by the second device, the number of superimposed layers N of the symbol data sequence sent by the first device; or

Obtaining, by the second device, a preset number N of layers of the symbol data sequence; or

The second device determines an overlay number N of the symbol data sequence according to the indication information of the second device.
The method according to claim 12, wherein the length of the scrambling sequence is Q, the data selection index of the symbol data sequence is j, and the coefficient selection index q of the scrambling sequence satisfies a remainder operation q=j%Q, wherein a coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and a data selection index j of the symbol data sequence is used to indicate the symbol data sequence Symbol data in .
The method according to any one of claims 10-13, wherein when N>1, the scrambled signal is a superposition of N-layer scrambled symbol data signals, and each layer of scrambled symbol data signals is The first device performs scrambling processing on the symbol data sequence of the corresponding layer.
The method of any of claims 11-13, wherein the method further comprises:

The second device sends N scrambling sequence selection indexes to the first device, where each layer symbol data sequence corresponds to one scrambling sequence selection index.
An apparatus for transmitting information, comprising:

a first acquiring unit, configured to acquire an N-layer symbol data sequence, where N is a positive integer;

a processing unit, configured to perform scrambling processing on each layer of the symbol data sequence in the N-layer symbol data sequence acquired by the first acquiring unit, to obtain a scramble signal;

And a sending unit, configured to send the scrambled signal to the second device.
The apparatus according to claim 16, wherein when N>1, the processing unit is specifically configured to perform scrambling processing on the N-layer symbol data sequence to obtain an N-layer scrambled symbol data signal, and The N-layer scrambled symbol data signal is superimposed to obtain the scrambled signal.
The apparatus according to claim 16 or 17, wherein the processing unit is specifically configured to determine a scrambling sequence corresponding to each layer of symbol data sequence, and multiply a scrambling coefficient in the scrambling sequence by a corresponding Symbol data for the symbolic data sequence.
The apparatus according to claim 18, wherein the length of the scrambling sequence is Q, the data selection index of the symbol data sequence is j, and the coefficient selection index q of the scrambling sequence satisfies a remainder operation q=j%Q, wherein a coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and a data selection index j of the symbol data sequence is used to indicate the symbol data sequence Symbol data in .
The apparatus according to claim 18 or 19, wherein the processing unit is specifically configured to determine N scrambling sequence selection indexes according to the number of layers N of the symbol data sequence, and from the predefined set of scrambling sequences, A scrambling sequence corresponding to each of the scrambling sequence selection indexes is selected, wherein each layer of symbol data sequence corresponds to one scrambling sequence selection index, and each scrambling sequence selection index corresponds to one scrambling sequence.
The apparatus according to claim 20, wherein when N>1, at least two of the N scrambling sequence selection indexes are different from each other.
The apparatus according to claim 20 or 21, wherein said apparatus further comprises a receiving unit,

The receiving unit is specifically configured to receive the N scrambling sequence selection indexes indicated by the second device; or, the processing unit is specifically configured to use, according to the number value of the first device, the predefined The size P of the set of scrambling sequences randomly determines the N scrambling sequence selection indexes, and P is a positive integer greater than or equal to N; or

The processing unit is specifically configured to cyclically select the N scrambling sequence selection indexes according to the size P of the predefined set of scrambling sequences.
The device according to any one of claims 20 to 22, wherein the device further comprises:

a second acquiring unit, where the second acquiring unit is specifically configured to obtain a base sequence of length P, where P is a positive integer, and P≥2;

The processing unit is further configured to perform full alignment of the elements in the base sequence to obtain Q sequences, and form a scrambling matrix of P rows and Q columns according to the Q sequences, wherein Q satisfies Q=P! Each row of the scrambling matrix constitutes a scrambling sequence, and the set of P scrambling sequences is the set of scrambling sequences, and the P scrambling sequence selection indexes are integers from 0 to P-1.
The device according to any one of claims 16 to 23, wherein N is determined by the first device, or N is carried according to the indication information of the second device, or N is a pre- The number of sent layers defined.
An apparatus for transmitting information, comprising:

a first receiving unit, configured to receive a scrambling signal sent by the first device, where the scrambling signal is obtained by performing scrambling processing on each layer of the symbol data sequence in the acquired N-layer symbol data sequence by the first device, N is a positive integer;

And a demodulation unit, configured to demodulate the scrambled signal received by the first receiving unit.
The device of claim 25, wherein the device further comprises:

An obtaining unit, configured to acquire an overlay layer number N of the symbol data sequence;

a determining unit, configured to randomly determine a scrambling sequence selection index corresponding to the N-layer symbol data sequence respectively;

among them,

The demodulation unit is specifically configured to demodulate the scrambled signal according to a scrambling sequence selection index corresponding to the N-layer symbol data sequence respectively.
The device according to claim 26, wherein the acquiring unit is configured to receive the superimposed layer number N of the symbol data sequence sent by the first device, or obtain a predefined sequence of the symbol data. The number of superimposed layers N, or the number of superimposed layers N of the symbol data sequence is determined according to the indication information of the second device.
The apparatus according to claim 27, wherein said length of said scrambling sequence is Q, said data selection index of said sequence of symbol data is j, and coefficient selection index q of said scrambling sequence satisfies a remainder operation q=j%Q, The coefficient selection index q of the scrambling sequence is used to indicate a scrambling coefficient in the scrambling sequence, and the data selection index j of the symbol data sequence is used to indicate symbol data in the symbol data sequence.
The apparatus according to any one of claims 25 to 28, wherein, when N > 1, the scrambled signal is a superposition of N-layer scrambled symbol data signals, and each layer of scrambled symbol data signals is The first device performs scrambling processing on the symbol data sequence of the corresponding layer.
The device of any of claims 26-28, wherein the device further comprises:

And a sending unit, configured to send, to the first device, N scrambling sequence selection indexes, where each layer of symbol data sequence corresponds to one scrambling sequence selection index.