WO2019029716A1

WO2019029716A1 - Method and device for processing data

Info

Publication number: WO2019029716A1
Application number: PCT/CN2018/100015
Authority: WO
Inventors: 吴艺群; 徐修强; 陈雁
Original assignee: 华为技术有限公司
Priority date: 2017-08-11
Filing date: 2018-08-10
Publication date: 2019-02-14
Also published as: CN109391303A; CN109391303B

Abstract

Provided in the present invention are a method and device for processing data, capable of reducing interference between different transport layers. The method comprises: mapping a modulation symbol to at least one transport layer; determining a first target preprocessing matrix in a preprocessing matrix set, any two preprocessing matrices of the preprocessing matrix set being different from each other; utilizing the first target preprocessing matrix to preprocess the modulation symbol on a first transport layer of the at least one transport layer to produce a processed modulation symbol on the first transport layer, the preprocessing specifically being: Y = W * X, X expressing the input of the preprocessing, Y expressing the output of the preprocessing, and W being the preprocessing matrix; mapping the preprocessed modulation symbol on the first transport layer to a transport resource for transmission to a receiving end.

Description

Method and apparatus for processing data

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No. No. No. No. No.

Technical field

Embodiments of the present application relate to the field of communications, and more particularly, to a method and apparatus for transmitting data in the field of communications.

Background technique

With the development of the network system, the capacity of the terminal device is increasing, and the multi-user multiple-input multiple-output (MIMO) technology enables multiple terminal devices to perform on the same time-frequency resource. Sending or receiving data, multiple data streams of multiple terminal devices can be regarded as data streams of different antennas, and data streams of different antennas correspond to different transport layers, thereby improving data throughput and saving time-frequency resources. However, how to reduce the interference between different transport layers is an urgent problem to be solved.

Summary of the invention

The present application provides a method and apparatus for processing data that can reduce interference of data of different transport layers.

In a first aspect, a method for processing data is provided, comprising: mapping modulation symbols onto at least one transport layer; determining a first target pre-processing matrix in the set of pre-processing matrices, any two of the pre-processing matrix sets The pre-processing matrix is different; the modulation symbols on the first transport layer in the at least one transport layer are pre-processed by using the first target pre-processing matrix to obtain a modulation symbol on the pre-processed first transport layer. The pre-processing is specifically: Y=W*X, X characterizes the input of the pre-processing, Y characterizes the output of the pre-processing, W is a pre-processing matrix; modulation on the pre-processed first transport layer The symbol map is sent to the receiving end on the transmission resource.

In the embodiment of the present application, any two pre-processing matrices in the pre-processing matrix set are different, so that different transport layers may select different pre-processing matrices for pre-processing, which may reduce interference of different transport layers.

It should be understood that the modulation symbol can be at least one modulation symbol included in the data stream.

Optionally, the pre-processing step in orthogonal frequency division multiplexing (OFDM) technology may be after transmission layer mapping, before pre-coding of the spatial domain.

Optionally, in the method of discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM), the preprocessing step may be after the transport layer mapping, the discrete Fourier transform prior to.

Optionally, the pre-processing matrix in the pre-processing matrix set is pre-processed by the transport layer mapped modulation symbol sequence, and the pre-processing matrix of the mapped modulation symbol sequence of different transport layers is different, so that the transport layer can be reduced. Interference with the transport layer. Optionally, the transmitting end may be a terminal device, and one terminal device may generate modulation symbols of multiple transport layers, or may only generate one modulation symbol of the transport layer, when the modulation symbols of multiple transport layers generated by the terminal device are respectively After pre-processing, data interference between different transport layers is reduced. When multiple senders send data to the same receiver, the data sent by different senders appears to belong to different transport layers at the receiving end. After the data sent by each sender is preprocessed, the different senders can be reduced. Interference.

Optionally, the sending end may be a network device, and the receiving end may be a terminal device; optionally, the sending end may be a terminal device, and the receiving end may be a network device.

In some implementations, the set of pre-processing matrices includes at least one sparse matrix, each column of the sparse matrix including at least one zero element. It is also possible to treat an element near zero as a zero element. When the matrix in the preprocessing matrix set includes a sparse matrix, when the sparse matrix is used to process the modulation symbols of the transport layer, the zero elements in the sparse matrix can be reduced or even eliminated. The modulation symbol of the transport layer interferes with other transport layers at the resource location corresponding to the zero element, and the process of pre-preprocessing by the receiving end is relatively simple, which can reduce the complexity of the system.

In some implementations, the first target pre-processing matrix is orthogonal to a first pre-processing matrix in the set of pre-processing matrices. In this way, when the first transport layer is pre-processed by using the first target pre-processing matrix, and the second transport layer is pre-processed by using the first pre-processing matrix, interference between the first transport layer and the second transport layer can be avoided.

In some implementations, the mapping of the modulated symbol on the pre-processed first transport layer to the receiving end on the transmission resource includes: modulating the pre-processed first transport layer The symbol performs precoding processing to obtain a precoding symbol; and mapping the precoding symbol on the transmission resource to the receiving end. It should be understood that the precoding may be spatial domain coding.

In some implementations, the pre-processing the modulation symbols on the first transport layer in the at least one transport layer by using the first target pre-processing matrix to obtain the pre-processed first transport layer The modulation symbol includes: performing block processing on the modulation symbols on the first transmission layer to obtain a plurality of modulation symbols; and preprocessing the plurality of modulation symbols by using the first target pre-processing matrix to obtain a The pre-processed modulation symbols on the first transport layer.

Optionally, the pre-processing matrix of each of the modulation symbols may be the same or different, which is not limited by the embodiment of the present application.

In some implementations, the at least one transport layer is specifically a plurality of transport layers. Correspondingly, the method further includes: the sending end utilizing a second target pre-processing matrix pair in the pre-processing matrix set Performing a pre-processing operation on the modulation symbols on the second transport layer in the at least one transport layer to obtain a pre-processed modulation symbol on the second transport layer; correspondingly, the pre-processed first transport layer Transmitting the modulation symbol mapping on the transmission resource to the receiving end, including: mapping the pre-processed modulation symbol on the first transport layer and the pre-processed modulation symbol on the second transport layer to The transmission resource is sent to the receiving end; wherein the first target pre-processing matrix is the same as or different from the second target pre-processing matrix. That is, the transmitting end can preprocess different target preprocessing matrices for different transport layers, which can reduce the interference of modulation symbols of different transport layers.

In some implementations, the method further includes: before the mapping of the modulation symbols on the pre-processed first transport layer to a receiving end on a transmission resource, or in the pre-processing Before the pre-coding process is performed on the modulation symbols on the first transmission layer, the modulation symbols on the pre-processed first transmission layer are subjected to discrete Fourier transform to obtain a transformed modulation symbol sequence.

In some implementations, the modulation symbols include real and imaginary parts. When constructing the input of the pre-processing, the transmitting end may open the real part and the imaginary part of the modulation symbol of the first transport layer, for example, the real part and the imaginary part of the modulation symbol are spaced apart, and then the real part and the imaginary part are processed. The column width of the pre-processing matrix is twice the column width of the processing modulation symbol, so that the pre-processed diversity gain can be further obtained.

In some implementations, the sending end is a terminal device, and before determining the first target pre-processing matrix in the pre-processing matrix set, the method further includes: receiving indication information sent by the network device, where The indication information is used to indicate the first target pre-processing matrix in the pre-processing set; wherein the determining the first target pre-processing matrix in the pre-processing matrix set comprises: according to the indication information, from the pre- A first target pre-processing matrix is determined in the processing matrix set.

In some implementations, the indication information is used to indicate an index of the first target pre-processing matrix in the pre-processing matrix set, or the indication information is used to indicate that the pre-processing matrix set is pre- Processing a matrix subset and an index of the first target pre-processing matrix in the pre-processing subset.

In some implementations, the indication information is used to indicate a modulation mode and an index of a first target pre-processing matrix in a pre-processing matrix set corresponding to the modulation mode, or the indication information is used to indicate a waveform and a An index of a target pre-processing matrix in the set of pre-processing matrices corresponding to the waveform, or the indication information is used to indicate that the modulation mode, the waveform, and the first target pre-processing matrix correspond to the waveform and the modulation mode The index in the preprocessing matrix set.

Optionally, the protocol specifies that the network device has a one-to-one correspondence between the modulation mode and the preprocessing matrix set, for example, the correspondence may be referred to as a first correspondence, and the indication information is used to indicate the modulation mode and the first Determining the first target pre-processing matrix from the pre-processing matrix set according to the indication information, when the target pre-processing matrix is indexed in the pre-processing matrix set corresponding to the modulation mode, including: indicating according to the indication information The modulation mode and the first correspondence determine a pre-processing matrix set corresponding to the modulation mode, and determine a first target pre-processing matrix in the determined pre-processing matrix set according to the index.

Optionally, the protocol specifies that the network device advance configuration waveform has a one-to-one correspondence with the preprocessing matrix set. For example, the correspondence relationship may be referred to as a second correspondence relationship, where the indication information is used to indicate the waveform and the first target pre- And determining, according to the indication information, the first target pre-processing matrix from the set of pre-processing matrices according to the indication information, including: a waveform according to the indication information, and a second Corresponding relationship determines a pre-processing matrix set corresponding to the waveform, and determines a first target pre-processing matrix in the determined pre-processing matrix set according to the index.

Optionally, the protocol specifies that the network device configures the waveform in advance and the modulation mode has a one-to-one correspondence with the pre-processing matrix set. For example, the correspondence relationship may be referred to as a third correspondence relationship, where the indication information is used for a modulation mode, a waveform, and Determining, by the first target pre-processing matrix, the first target pre-processing matrix from the pre-processing matrix set according to the indication information, in the index of the pre-processing matrix set corresponding to the waveform and the modulation mode, including: Determining a pre-processing matrix set corresponding to the waveform according to the waveform and the modulation mode indicated by the indication information and the second correspondence relationship, and determining the first target pre-processing matrix in the determined pre-processing matrix set according to the index.

A second aspect provides a method for processing data, including: receiving, by a receiving end, a modulation symbol on a first transmission layer that is pre-processed on a transmission resource by a transmitting end; and receiving, by the receiving end, a pre-processed The modulation symbols on a transport layer are pre-processed, and the specific solution is preprocessed as X=W ^-1 *Y, Y represents the input of the solution pre-processing, X represents the output of the solution pre-processing, and W ^-1 is the solution Preprocessing matrix.

Optionally, W ⁻¹ may be obtained according to the inverse W transform in the first aspect. Which matrix W is selected in the first aspect for pre-processing, and the pre-preprocessing also selects the inverse matrix W ^{−1 of the} matrix W for solution pre-processing. That is, the solution pre-processing is the inverse process of the first aspect. In order to avoid redundancy, it is not exemplified here.

In a third aspect, there is provided apparatus for transmitting information for performing the method of any of the first aspect or the first aspect of the first aspect. 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.

In a fourth aspect, an apparatus for transmitting information is provided, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path for storing instructions for executing instructions stored in the memory to control the receiver to receive signals and to control the transmitter to transmit signals And when the processor executes the instructions stored by the memory, the executing causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.

In a fifth aspect, a computer readable storage medium is provided, the instructions being stored in a computer readable storage medium, when executed on a computer, causing the computer to perform any of the possible implementations of the first aspect or the first aspect The method in the way.

In a sixth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the first aspect or the first aspect of the first aspect.

In a seventh aspect, the present application provides a communication chip in which an instruction is stored, and when it is run on a transmitting end, causes the transmitting end to perform the method described in the above first aspect.

DRAWINGS

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.

FIG. 2 is a schematic diagram of an application scenario of an embodiment of the present application.

FIG. 3 is a schematic diagram of another application scenario of an embodiment of the present application.

FIG. 4 is a schematic diagram of still another application scenario of the embodiment of the present application.

FIG. 5 is a schematic diagram of still another application scenario of the embodiment of the present application.

FIG. 6 is a schematic diagram of a method for processing data according to an embodiment of the present application.

FIG. 7 is a schematic block diagram of an apparatus for processing data according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of another apparatus for processing data according to an embodiment of the present application.

Detailed ways

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

The technical solution of the embodiment of the present application can be applied to various communication systems, for example, a global system for mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access. (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, future fifth generation (5th Generation, 5G) Communication system or New Radio (NR) system.

In order to facilitate the understanding of the embodiments of the present application, the communication system applicable to the embodiment of the present application will be described in detail first with reference to FIG. 1 shows a schematic diagram of a communication system suitable for a method and apparatus for data transmission in accordance with an embodiment of the present application. As shown in FIG. 1, the communication system 100 includes a network device 102, which may include multiple antennas, such as

antennas

104, 106, 108, 110, 112, and 114. Additionally, network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer) , demodulator, demultiplexer or antenna, etc.).

It should be understood that the network device may be a base station (Base Transceiver Station, BTS) in Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), or a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA). ), may also be an evolved base station (evolutional node B, eNB or eNodeB) in Long Term Evolution (LTE), or a relay station, an access point or a Radio Radio Unit (RRU), or an in-vehicle device, wearable The device and the network side device in the future 5G system, such as a transmission point (TP), a transmission reception point (TRP), a base station, a small base station device, and the like, are not specifically limited in this embodiment of the present application.

Network device 102 can communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. Network device 102 can communicate with any number of terminal devices similar to

terminal device

116 or 122.

It should be understood that the terminal device may also be referred to as a user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication. Device, user agent, or user device. The terminal device may be a station (station, ST) in a wireless local area network (WLAN), and may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, or a wireless local loop (wireless local Loop, WLL) station, personal digital assistant (PDA) device, handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, and next-generation communication system, For example, the terminal device in the 5G network or the terminal device in the public land mobile network (PLMN) network in the future is not limited in this embodiment.

As shown in FIG. 1, terminal device 116 is in communication with antenna 112 and/or antenna 114 of network device 102, wherein signals transmitted by antenna 112 and/or antenna 114 are transmitted over forward link 118 to terminal device 116 for receiving reverse chains. The signal transmitted by the terminal device 116 transmitted by the path 120. In addition, terminal device 122 is in communication with antenna 104 and/or antenna 106, wherein signals transmitted by antenna 104 and/or antenna 106 are transmitted to terminal device 122 over forward link 124 and receive terminals transmitted over reverse link 126. The signal transmitted by device 122.

For example, in a frequency division duplex (FDD) system, for example, the forward link 118 can utilize a different frequency band than that used by the reverse link 120, and the forward link 124 can utilize the reverse link. 126 different frequency bands used.

As another example, in a time division duplex (TDD) system and a full duplex system, the forward link 118 and the reverse link 120 can use a common frequency band, a forward link 124, and a reverse link. Link 126 can use a common frequency band.

Each antenna (or set of antennas consisting of multiple antennas) and/or regions designed for communication is referred to as a sector of network device 102. For example, the antenna group can be designed to communicate with terminal devices in sectors of the network device 102 coverage area. In the process in which network device 102 communicates with

terminal devices

116 and 122 via

forward links

118 and 124, respectively, the transmit antenna of network device 102 may utilize beamforming to improve the signal to noise ratio of

forward links

118 and 124. Furthermore, when the network device 102 uses beamforming to transmit signals to the terminal devices 116 and the terminal devices 122 that are randomly dispersed in the relevant coverage area, the neighboring cells are compared with the manner in which the network device transmits signals to all of its terminal devices through a single antenna. Mobile devices in the middle are subject to less interference.

Network device 102, terminal device 116 or terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device can process the data for transmission.

In addition, the communication system 100 may be a public land mobile network (PLMN) network or a device to device (D2D) network or a machine to machine (M2M) network or other network, and FIG. 1 is only for easy understanding. For a simplified schematic of the example, other network devices may also be included in the network, which are not shown in FIG.

For example, the sending end in the embodiment of the present application may be the terminal device 116 or the terminal device 122, and the receiving end may be the network device 102. For example, the sending end in the embodiment of the present application may be the network device 102, and the receiving end may be the terminal. The device 116 or the terminal device 122, of course, is not limited in this embodiment. In the device to device (D2D) scenario, both the sending end and the receiving end may be terminal devices or have relays. In the scenario of the device, the sending end or the receiving end may be a relay device.

To facilitate understanding of the embodiments of the present application, a schematic diagram of a process of processing data in an OFDM system is briefly described below with reference to FIG. The object being processed is a codeword.

In the first step, the transmitting end first scrambles or interleaves the code word to generate scrambled bits or interleaved bits. Scrambling is the use of a bit sequence to XOR a bit in a code block, the length of the bit sequence being the same as the number of bits in the code block, and interleaving refers to reordering the bits in the code block. Generally, this step may be one of scrambling or interleaving, or a combination of scrambling and interleaving, including the operation of first scrambling or interleaving or scrambling, or there may be no scrambling or interleaving. .

In the second step, the scrambling bit or the interleaving bit of the first step is mapped into a modulation symbol, wherein the commonly used mapping modes include a binary phase shift keying (BPSK) modulation mode and a π/2-BPSK modulation mode. , quadrature phase shift keying (QPSK) modulation mode, π/4-QPSK modulation mode, 16 quadrature amplitude modulation (QAM), 64QAM, 256QAM, and the like.

In the third step, the sequence of modulation symbols corresponding to each code block is mapped to one or more spatial transport layers. Transport layer mapping is typically used in the case of multi-antenna transmission. If the terminal device uses a single antenna transmission, there is at most one spatial transport layer.

In the fourth step, the modulation symbols mapped by the transport layer are spatially pre-coded, and the modulation symbols preprocessed by different transport layers are mapped to different antenna ports. Assuming that there are v spatial transport layers and P antenna ports, the corresponding spatial domain precoding can be expressed as equation (1), where V is a precoding matrix, and the V size is P×v, y ⁽⁰⁾ (i), y ⁽¹⁾ (i),...y ^(v-1) (i) is the modulation symbol of v spatial transport layers, z ⁽⁰⁾ (i), z ⁽¹⁾ (i),...z ^{(P-1 )} (i) is a precoding the modulation symbols.

In the fifth step, the precoded modulation symbols are mapped to a plurality of REs through resource particle (RE) mapping. These REs are then subjected to orthogonal frequency division multiplexing (OFDM) modulation to generate OFDM symbols. The OFDM symbol is then transmitted through an antenna port.

Further, in order to understand the embodiments of the present application, a schematic diagram of a process of processing data in a DFT-s-OFDM system will be briefly described below with reference to FIG. 3 is different from FIG. 2 in that the modulation symbols on the transport layer after the transport layer mapping in the third step are subjected to discrete Fourier transform (DFT) transform, and the symbols after the DFT transform are mapped to multiple REs. These REs are OFDM modulated to generate DFT-s-OFDM symbols, and DFT-s-OFDM symbols are transmitted through the antenna port. The processing in the above OFDM system and in the DFT-s-OFDM system can be regarded as a processing method for generating two different waveforms.

In the scenario of FIG. 2 or FIG. 3, there is interference between data in different transport layers. Therefore, the embodiment of the present application, as shown in FIG. 4, is different from FIG. 2 in that the transport layer in FIG. 2 can be mapped. The modulation symbols on the transport layer are pre-processed using a pre-processing matrix. Different transport layers are pre-processed with different pre-processing matrices, which can reduce the interference of modulation symbols between the transport layer and the transport layer. Optionally, in the embodiment of the present application, as shown in FIG. 5, different from FIG. 3, the modulation symbols on the transport layer after the transport layer mapping in FIG. 3 may be preprocessed by using a pre-processing matrix, and then obtained by pre-processing. The modulation symbols on the transport layer are then subjected to DFT transform on the modulated symbols on the pre-processed transport layer. Different transport layers are processed by different pre-processing matrices, which can reduce the interference of modulation symbols between the transport layer and the transport layer. The method for processing data in the embodiment of the present application is specifically described below with reference to the accompanying drawings.

FIG. 6 shows a method 200 for processing data according to an embodiment of the present application. The method may be performed by a transmitting end, and the method 200 includes:

S210. Map modulation symbols to at least one transport layer. For example, S210 may be the transport layer mapping step in FIGS. 4 and 5.

S220. Determine a first target pre-processing matrix in the pre-processing matrix set, where any two pre-processing matrices in the pre-processing matrix set are different.

Optionally, the set of preprocessing matrices includes at least one sparse matrix, each column of the sparse matrix includes at least one zero element, or those elements close to zero may be regarded as zero elements. When the matrix in the pre-processing matrix set includes a sparse matrix, when the sparse matrix is used to process the modulation symbols of the transport layer, the zero elements in the sparse matrix can weaken the symbols multiplied by the zero elements in the modulation symbols, so that Reducing interference with other transport layer data, and the process of pre-preprocessing by the receiver is relatively simple, which can reduce the complexity of the system.

Optionally, there are two pre-processing matrix orthogonalities in the pre-processing matrix set, for example, the first target pre-processing matrix is orthogonal to the first pre-processing matrix, such that when the first target pre-processing matrix is used, the first The transport layer performs pre-processing, and the second transport layer is pre-processed by using the first pre-processing matrix to avoid interference between the first transport layer and the second transport layer.

Optionally, if the sending end is the first terminal device, the first terminal device may map the modulation symbol on one or more transport layers, if the first terminal device maps the modulation symbol on multiple transport layers, The multiple transmission layers may be pre-processed by using multiple different pre-processing matrices in the pre-processing matrix set to avoid symbol interference between different transport layers of the first terminal device. Similarly, the first transmitting end may be the first terminal. The second transmitting device may be a second terminal device, where the first terminal device may map the modulation symbol on a transport layer, the first terminal device adopts a first pre-processing matrix, and the modulation symbol on the transport layer, and the second The terminal device may map the modulation symbol on another transmission layer, and the second terminal device uses the second pre-processing matrix to adjust the modulation symbol on the transmission layer, the first pre-processing matrix and the second pre-processing matrix are different, so that The interference of the transport layer of different first terminal devices and the transport layer of the second terminal device is reduced.

Optionally, at the receiving end, if data of different transport layers of one terminal device or data of a transport layer of different terminal devices can be well distinguished by a spatial domain, that is, interference between different transport layers is small, The same pre-processing matrix can also be used when pre-processing each transport layer. That is, the division of the spatial domain can reduce the interference of different transmission layers. Therefore, different transmission layers can adopt the same pre-processing matrix, which is not limited in the embodiment of the present application.

As an example, for example, the pre-processing matrix set includes the pre-processing matrix shown in at least one of Table 1, Table 2, Table 3, Table 4, and Table 5. The preprocessing matrix in Table 1 is a 4×1 matrix, and accordingly, one modulation symbol can be mapped into four modulation symbols; the preprocessing matrix in Table 2 and Table 3 is a 4×2 matrix, and accordingly, The two modulation symbols are mapped into four modulation symbols; the preprocessing matrix in Table 4 is a 4×3 matrix, and accordingly, three modulation symbols can be mapped into four modulation symbols; the preprocessing matrix in Table 5 is A 4x4 matrix, correspondingly, can map four modulation symbols into four modulation symbols. For example, the preprocessing matrix corresponding to the preprocessing matrix index 0-15 in Table 1 is a sparse matrix, wherein the preprocessing matrix index 0-11 corresponds to a preprocessing matrix having a sparsity of 2 for each column (each column has 2 zeros) Element), the preprocessing matrix index 12-15 corresponds to the preprocessing matrix, the sparsity of each column is 3 (each column has 3 zero elements); the preprocessing matrix corresponding to the preprocessing matrix index 0-23 in Table 2 is a sparse matrix , wherein the preprocessing matrix index 0-11 corresponds to the preprocessing matrix, the sparsity of each column is 3 (each column has 3 zero elements), and the sparsity of each column of the preprocessing matrix corresponding to the preprocessing matrix index 12-23 is 2 (each column has 2 zero elements); the preprocessing matrix corresponding to the preprocessing matrix index 0-11 in Table 3, Table 4 and Table 5 is a sparse matrix, and each column of the preprocessing matrix corresponding to the preprocessing matrix index 0-11 The sparsity is 2 (two zero elements per column). The positions of the non-zero elements corresponding to different pre-processing matrices in the pre-processing matrix having the same sparsity in the same table are different.

Table 1

Table 2

table 3

Table 4

table 5

Table 6

Table 7

It should be understood that the possible forms of the exemplary pre-processing matrix in Tables 1 to 7 are not limited thereto, and may include, for example, the Gold code, the Zadoff-Chu code, and the Walsh code in the prior art. Corresponding sequences, such as PN code and Gray complementary code, the sequences corresponding to these codes form a pre-processing matrix according to certain rules.

Optionally, how to determine the first target pre-processing matrix in the pre-processing matrix set may be determined by a protocol, and the transmitting end is a terminal device, and the pre-processing matrix set includes multiple pre-processing matrices, and each pre-processing matrix exists. A unique index, for example, when the network device obtains the ID of the terminal device, the protocol may specify that the ID of the terminal device is used to calculate an index of the pre-processing matrix in the pre-processing matrix set. Or, if the sending end is a terminal device, and the receiving end is a network device, the terminal device may receive the indication information sent by the network device, where the indication information is used to indicate the first target pre-processing matrix in the pre-processing matrix set, S220, including The terminal device determines the first target pre-processing matrix in the pre-processing matrix set according to the indication information. Specifically, the indication information may indicate the first target pre-processing matrix in the following five manners.

In the first manner, it is assumed that each pre-processing matrix included in the pre-processing matrix set has a unique index value, and the indication information may indicate an index of the first target pre-processing matrix, so that the terminal device can be based on the first target. An index of the pre-processing matrix determines the first target pre-processing matrix. For example, the pre-processing matrix set includes the pre-processing matrix in Table 1. The index of the first target pre-processing matrix indicated by the first indication information is 5, and the first target pre-processing matrix is the last one corresponding to the index 5 in the second row. matrix. For another example, all the pre-processing matrices in Tables 1 to 5 may be uniformly indexed, and the indication information may indicate that any one of the tables 1 to 5 is the first target pre-processing matrix.

In the second mode, it is assumed that the pre-processing matrix set includes a plurality of pre-processing matrix subsets, and each pre-processing matrix in each pre-processing matrix subset has a unique index in the pre-processing matrix subset, and the indication information may indicate The pre-processing matrix subset and the index of the first target pre-processing matrix in the pre-processing matrix subset. For example, each set in Tables 1 to 5 may have an index, and the pre-processing matrix in each of Tables 1 to 5 has an index in the table, and the indication information may indicate one of the tables and indicate the The index of the pre-processing matrix in the table, for example, the pre-processing matrix subset can be divided by the size of the matrix, assuming that the pre-processing matrix subset includes Table 1, Table 2, Table 4, and Table 5, if the size of the pre-processing matrix is L×M indicates that the pre-processing matrix subset can be indicated by L and M. For example, the pre-processing matrix in Table 1 is 4×1, and the pre-processing matrix in Table 2 is 4×2, and the pre-processing in Table 4 The matrix is 4×3, the preprocessing matrix in Table 5 is 4×4, the indication information indicates that the preprocessing matrix subset is L=4 and M=4, and the index of the first target preprocessing matrix in the preprocessing matrix subset is 5, Then the terminal device can determine that the first target pre-processing matrix is the last matrix of the second row in Table 5.

In the third mode, it is assumed that there are multiple pre-processing matrix sets, each pre-processing matrix set corresponds to one modulation mode, and different pre-processing matrix sets may correspond to different modulation modes, and each pre-processing matrix set is pre-processed. The matrix has a unique index in the set of pre-processing matrices, and the indication information may indicate a modulation mode and an index of the first target pre-processing matrix in the set of pre-processing matrices corresponding to the modulation mode. For example, the size of the pre-processing matrix of Table 2 and Table 3 is 4×2, assuming that Table 2 corresponds to BPSK modulation corresponding to QPSK modulation table 3, the indication information indicates that the modulation mode is BPSK, and the BPSK modulation mode corresponds to the first in the pre-processing matrix set. The index of the target pre-processing matrix is 6, and the terminal device can determine that the first target pre-processing matrix is the first matrix of the third row of Table 3 (the total three rows of Table 3).

In the fourth mode, it is assumed that there are multiple pre-processing matrix sets, each pre-processing matrix set corresponds to one waveform, and different pre-processing matrix sets may correspond to different waveforms, and each pre-processing matrix in each pre-processing matrix set There is a unique index in the set of pre-processing matrices, the indication information may indicate the waveform and the index of the first target pre-processing matrix in the set of pre-processing matrices corresponding to the waveform. For example, the size of the pre-processing matrix of Tables 1 and 6 is 4×1, assuming that Table 1 corresponds to an OFDM waveform, Table 6 corresponds to a DFT-s-OFDM waveform, and the indication information indicates that the waveform is DFT-s-OFDM, corresponding to the pre-processing matrix. The index of the first target pre-processing matrix in the subset is 1, and the terminal device can determine that the first target pre-processing matrix is the second matrix of the second row (Table 6 of four rows) in Table 6.

In the fifth mode, it is assumed that there are multiple pre-processing matrix sets, each pre-processing matrix set corresponds to one waveform and modulation mode, and different pre-processing matrices may correspond to different waveforms and modulation modes, each of each pre-processing matrix set Each pre-processing matrix has a unique index in the pre-processing matrix set, and the indication information may indicate the waveform and the modulation mode and the index of the pre-processing matrix subset of the first target pre-processing matrix corresponding to the waveform and the modulation mode. For example, suppose Table 2 corresponds to OFDM waveform and QPSK modulation, Table 3 corresponds to OFDM waveform and BPSK modulation, Table 6 corresponds to DFT-s-OFDM waveform and QPSK modulation, and Table 7 corresponds to DFT-s-OFDM waveform and BPSK modulation, if indication information The indication waveform is DFT-s-OFDM, the modulation mode is QPSK, and the index of the first target pre-processing matrix corresponding to the pre-processing matrix subset is 5, the terminal device can determine that the first target pre-processing matrix is the second row in Table 6. The last matrix of (four rows in Table 6).

Optionally, the network device may send the indication information to the terminal device by using downlink control information or high transport layer signaling.

Optionally, for multi-antenna transmission, there may be multiple transport layers, and the pre-processing matrix corresponding to each transport layer may be different, so the indication information may indicate that a pre-processing matrix is a pre-processing matrix of a certain transport layer, and the pre-preparation The matrix that processes the continuous index of the matrix is a pre-processing matrix of another transport layer. For example, if the index of the pre-processing matrix of the first transport layer is 1, and assuming that there are three transport layers, the index of the pre-processing matrix of the second transport layer is 2. The index of the pre-processing matrix of the third transport layer is 3.

S230: Perform pre-processing on the modulation symbols on the first transport layer in the at least one transport layer by using the first target pre-processing matrix to obtain a pre-processed modulation symbol on the first transport layer, where the pre-processing Specifically: Y=W*X, X characterizes the input of the pre-processing, Y characterizes the output of the pre-processing, and W is a pre-processing matrix. Alternatively, S230 may be the pre-processing operation in FIG. 4 or FIG. 5.

It should be understood that the number of columns of W is equal to the number of rows of X.

As an example, assume that there are ν transport layers, ν is an integer greater than or equal to 1, and the symbols on the first transport layer in the ν transport layers are x(0)...x(M-1), where M is the first The number of modulation symbols on a transmission layer, that is, X is (x(0)...x(M-1)) ^T , W is a matrix of L×M, and L is called a spread length, then Y=W*X , Y is a matrix of L × 1, for example, L=4, M=1 in Table 1; L=4, M=2 in Table 2; L=4, M=2 in Table 3; L=4 in Table 4. , M = 3; in Table 5, L = 4, M = 1. Optionally, the preprocessing matrices of each of the v transport layers are different, which can reduce interference between the transport layer and the transport layer. Alternatively, L can be equal to M. Optionally, when L is equal to M, W may be an identity matrix, that is, the modulation symbol on the first transport layer after preprocessing the data of the first transport layer by using the unit matrix W may be equal to the first transmission before pre-processing. Modulation symbol on the layer.

Optionally, S230, comprising: performing block processing on the modulation symbols on the first transport layer to obtain multiple block modulation symbols; and preprocessing the multiple block modulation symbols by using the first target pre-processing matrix And obtaining a modulation symbol on the first transport layer after preprocessing.

As an example, the modulation symbols x(0)...x(M-1) on the first transport layer may be subjected to block processing, for example, uniform block processing may be performed in the order of modulation symbols, for example, M modulations The symbols are divided into M/K blocks, each block has K modulation symbols x(i)...x(i+K-1), then W is a matrix of L×K, and each modulation symbol can be preprocessed separately. Expressed by the formula (2), each modulation symbol may adopt a different pre-processing matrix, or the M/K block modulation symbols on the first transmission layer adopt the same pre-processing matrix, for example, using the first target pre-processing matrix pair M The /K block modulation symbols are separately preprocessed.

Optionally, the at least one transport layer is specifically a plurality of transport layers. Correspondingly, the method 200 further includes: the sending end using the second target pre-processing matrix in the pre-processing matrix set to transmit the at least one Performing a pre-processing operation on the modulation symbols on the second transport layer in the layer to obtain a modulation symbol on the pre-processed second transport layer; correspondingly, the modulation symbol on the pre-processed first transport layer The mapping is sent to the receiving end on the transmission resource, including: mapping, on the transmission resource, the modulation symbol on the pre-processed first transport layer and the modulation symbol on the pre-processed second transport layer The receiving end sends, wherein the first target pre-processing matrix is the same as or different from the second target pre-processing matrix. That is, the transmitting end can preprocess different target preprocessing matrices for different transport layers, which can reduce mutual interference between modulation symbols of different transport layers. For example, the first target pre-processing matrix may be orthogonal to the second target pre-processing matrix (ie, the inner product of each column of the first target pre-processing matrix and each column of the second target pre-processing matrix is 0) Mutual interference between modulation symbols on the first transport layer and modulation symbols on the second transport layer can be avoided. For another example, the first target pre-processing matrix may be a first sparse matrix, and the second pre-processing matrix may be a second sparse matrix, where the zero elements in the first sparse matrix are different from the positions of the zero elements in the second sparse matrix, such that a zero element in the first sparse matrix may weaken a symbol multiplied by a zero element in a modulation symbol on the first transport layer, and a zero element in the second sparse matrix may reduce or even eliminate a modulation symbol of the transport layer at the zero Interference with other transport layers at the resource location corresponding to the element.

As an alternative embodiment, the modulation symbols include real and imaginary parts. Thus, in S230, when the pre-processed input X is constructed, the real part and the imaginary part of the modulation symbol can be processed. For example, the real part of the modulation symbol x represents real(x), and the imaginary part is represented as imag(x). Then, the preprocessing operation can be performed by the formula (3), wherein W in the formula (3) is a matrix of L × 2K, where K represents the number of modulation symbols, and L is the number of modulation symbols after preprocessing. Alternatively, the pre-processing operation can also be performed using equation (4). For example, the preprocessing matrix in Table 3 may be a preprocessing matrix in Equation (3) or Equation (4), so that one modulation symbol can be processed at a time for the 4×2 preprocessing matrix in Table 3, and the transmitting end performs The real and imaginary parts of the modulation symbol are processed during processing, and the four modulation symbols after processing using the pre-processing matrix in Table 3 include two zero elements. If it is necessary to perform pre-processing on the same modulation symbol x, W in equation (3) can be obtained by row transformation in W in equation (4), or W in equation (4) can be obtained from equation (3). The W in the row is transformed. Equation (3) or formula (4) processes the real part and the imaginary part of the modulation symbol separately, and the diversity gain of the real part and the diversity gain of the imaginary part can be respectively obtained, so that the pre-processed diversity gain can be further obtained.

Alternatively, if K QPSK modulation symbols are pre-processed, the pre-processing matrix processing K QPSK modulation symbols can process 2K BPSK modulation symbols, for example, in Table 3, for BPSK modulation, K=2, L=4, that is, one pre-processing can process two BPSK modulation symbols. For QPSK modulation, the modulation symbol of QPSK is twice the modulation symbol of BPSK. Therefore, for QPSK modulation, K=1, L=4, using Table 3 The number of QPSK modulation symbol processing in the pre-processing matrix is half the number of BPSK modulation symbol processing.

S240. Map the modulation symbols on the pre-processed first transport layer to the receiving end on the transmission resource.

Optionally, the method S240 includes: performing precoding processing on the pre-processed modulation symbols on the first transport layer to obtain pre-coded symbols; mapping the pre-coded symbols on the transmission resource to the receiving Send it. That is, the precoding process may be the spatial precoding process in FIG. 4, except that the symbol of the first transport layer in the precoded object is specifically the modulation symbol on the first transport layer preprocessed in the embodiment of the present application. Or the precoding process may be the spatial domain coding in FIG. 5, except that the symbol of the first transport layer in the precoded object is specifically the DFT transform modulation of the modulation symbol on the first transport layer in the embodiment of the present application. symbol.

Optionally, the method 200 further includes: before the mapping, the mapping of the modulation symbols on the pre-processed first transport layer to the receiving end on the transmission resource, or after the pre-processing Before the precoding process is performed on the modulation symbols on the first transport layer, the transmitting end performs discrete Fourier transform on the modulated symbols on the preprocessed first transport layer to obtain a transformed modulated symbol sequence. That is, the step of the DFT transform in FIG. 5, the DFT transform may be such that the transmitted signal has a single carrier characteristic, and the transmitting end may perform DFT transform on the modulated symbol on the preprocessed first transport layer, or may be The pre-processed modulation symbols on the first transport layer and the pre-processed modulation symbols on the second transport layer are DFT-transformed. Or DFT transforming the modulation symbols on each of the pre-processed transport layers on the at least one transport layer. Specifically, it is assumed that the first transmission layer includes M modulation symbols, M modulation symbols are divided into M/K blocks, each block has K modulation symbols, and K modulation symbols for each block are processed by using L×K preprocessing matrix. Performing pre-processing to obtain L modulation symbols, then including ML/K modulation symbols for the first transmission layer after pre-processing, and ML/(NK) sets for ML/K modulation symbols, modulation symbols for each set Corresponding to one SC-FDMA symbol, N represents the number of subcarriers, and the DFT transform is the same as in LTE, and the DFT transform is performed using the number of subcarriers N.

Optionally, for the modulation symbols that need to perform DFT transform, a specific pre-processing matrix may be selected, so that the energy of the frequency domain signal obtained by the DFT transform is relatively concentrated, so that the Peak-to-Average Ratio can be further reduced. For example, the selected specific pre-processing matrix set may include the pre-processing matrix in Table 6 and/or Table 7, and the spectra corresponding to the pre-processing matrix in Table 6 and Table 7 are relatively concentrated, so that the pre-processing corresponding to the spectrum set is utilized. The matrix preprocesses the modulation symbols on the first transport layer, obtains the pre-processed modulation symbols on the first transport layer, and then performs DFT transform on the pre-processed modulation symbols on the first transport layer, and the purpose of the DFT transform It is to reduce the peak-to-average ratio of the transmitted signal. Therefore, it is assumed that preprocessing with a preprocessing matrix corresponding to Table 6 and/or Table 7 can further reduce the peak-to-average ratio of the transmitted signal.

Table 6

Table 7

Optionally, after preprocessing the M modulation symbols by using the L×K preprocessing matrix, the number of modulation symbols becomes ML/K, that is, the preprocessed modulation symbols are L/K times before preprocessing. Assume that the number of allocated physical resource blocks is N' _PRB . When preprocessing is performed using the L×K preprocessing matrix, the transport block size (TBS) used in the encoding process can be based on the TBS index and equivalent. The number of physical resource blocks N _{PRB is} obtained by looking up the table (for example, looking up an existing TBS form). The number of equivalent physical resource blocks N _PRB can be obtained according to formula (5)

among them,

Indicates the rounding.

Therefore, the method for processing data provided by the embodiments of the present application selects different pre-processing matrices to pre-process modulation symbols of different transport layers, which can reduce interference between the transport layer and the transport layer, and helps to obtain diversity. Gain. Also, when the modulation symbol includes the real part and the imaginary part, the real part and the imaginary part can be processed to obtain more diversity gain. Further, when there is an orthogonal pre-processing matrix in the pre-processing matrix set, when the transmitting end selects an orthogonal pre-processing matrix to process modulation symbols of different transport layers, interference between different transport layers can be reduced. Further, when there is a sparse matrix in the preprocessing matrix set, when the transmitting end selects the sparse matrix to preprocess the first transport layer, the interference of the first transport layer to other transport layers may also be reduced, and the solution at the receiving end may be simplified. Pretreatment process.

Optionally, the process of the pre-processing of the receiving end may be: the receiving end receives the pre-processed modulation symbol on the first transport layer mapped by the transmitting end on the transmission resource; and the receiving end receives the pre-processed first The modulation symbols on the transport layer are pre-processed, and the specific solution is preprocessed as X=W ^-1 *Y, Y represents the input of the solution pre-processing, X represents the output of the solution pre-processing, and W ^-1 is the solution The processing matrix, W ^-1 can be obtained according to the inverse W transform in the method 200, and which matrix W is selected in the method 200 for pre-processing, the solution pre-processing also selects the inverse matrix W ^{-1 of the} matrix W for pre-preprocessing, that is, The pre-processing is the inverse of the method 200. In order to avoid redundancy, it is not exemplified here.

The method of processing data according to an embodiment of the present application is described in detail above with reference to FIGS. 2 through 6, and an apparatus for processing data according to an embodiment of the present application will be described below with reference to FIGS. 7 and 8.

FIG. 7 is a schematic block diagram of an apparatus 300 for processing data, which may be a sender in method 200, in accordance with an embodiment of the present application. As shown in FIG. 7, the apparatus 300 includes: a processing unit 310 and a transceiver unit 320, wherein

The processing unit 310 is configured to map modulation symbols to at least one transport layer;

The processing unit 310 is further configured to determine a first target pre-processing matrix in the pre-processing matrix set, where any two pre-processing matrices in the pre-processing matrix set are different;

The processing unit 310 is further configured to perform pre-processing on the modulation symbols on the first transport layer in the at least one transport layer by using the first target pre-processing matrix to obtain modulation on the pre-processed first transport layer. a symbol, the preprocessing is specifically: Y=W*X, X characterizes the input of the preprocessing, Y characterizes the output of the preprocessing, and W is a preprocessing matrix;

The transceiver unit 320 is configured to map the modulated symbol on the pre-processed first transport layer to the receiving end on the transmission resource.

As an optional embodiment, the preprocessing matrix set includes at least one sparse matrix, and each column of the sparse matrix includes at least one zero element.

As an optional embodiment, the first target pre-processing matrix is orthogonal to the first pre-processing matrix in the pre-processing matrix set.

As an optional embodiment, the processing unit 310 is further configured to: perform pre-coding processing on the pre-processed modulation symbols on the first transport layer to obtain pre-coded symbols; and the sending unit 320 is specifically configured to: Mapping the precoding symbol to the receiving end on the transmission resource.

As an optional embodiment, the processing unit 310 is specifically configured to perform block processing on the modulation symbols on the first transport layer to obtain multiple block modulation symbols, and use the first target pre-processing matrix to separately The plurality of modulation symbols are preprocessed to obtain modulation symbols on the preprocessed first transport layer.

As an optional embodiment, the at least one transport layer is specifically a plurality of transport layers, and correspondingly, the processing unit 310 is further configured to: use the second target pre-processing matrix in the pre-processing matrix set to Performing a pre-processing operation on the modulation symbols on the second transport layer in the at least one transport layer to obtain a pre-processed modulation symbol on the second transport layer;

The transceiver unit 320 is further configured to: map, on the transmission resource, the modulation symbol on the pre-processed first transmission layer and the modulation symbol on the pre-processed second transmission layer to the receiving Transmitting; wherein the first target pre-processing matrix is the same as or different from the second target pre-processing matrix.

As an optional embodiment, the processing unit 310 is further configured to: before the mapping, by using the modulation symbol on the pre-processed first transport layer, on the transmission resource, before sending to the receiving end, The modulation symbols on the first transmission layer are subjected to discrete Fourier transform to obtain a transformed modulation symbol sequence.

As an alternative embodiment, the modulation symbols include real and imaginary parts.

As an optional embodiment, the device is a terminal device, and the transceiver unit 320 is further configured to: before the determining the first target pre-processing matrix in the pre-processing matrix set, receive the indication information sent by the network device, The indication information is used to indicate the first target pre-processing matrix in the pre-processing set; the processing unit 310 is specifically configured to: determine, according to the indication information, a first target pre-determination from the pre-processing matrix set Processing matrix.

In an optional embodiment, the indication information is used to indicate an index of the first target pre-processing matrix in the pre-processing matrix set, or the indication information is used to indicate that the pre-processing matrix set is pre- Processing a matrix subset and an index of the first target pre-processing matrix in the pre-processing subset.

As an optional embodiment, the indication information indicates a modulation mode and an index of the first target pre-processing matrix, and the processing unit 310 is further configured to: use the pre-processing matrix set corresponding to the modulation mode The pre-processing matrix indicated by the index is determined as the target pre-processing matrix; or

The indication information indicates a waveform and an index of the first target pre-processing matrix. The processing unit 310 is further configured to: determine a pre-processing matrix indicated by the index in the pre-processing matrix set corresponding to the waveform. Preprocessing the matrix for the target; or,

The indication information indicates a modulation mode, a waveform, and an index of the first target pre-processing matrix. Correspondingly, the processing unit 310 is further configured to: set a pre-processing matrix corresponding to the combination of the waveform and the modulation mode. The pre-processing matrix indicated by the index is determined as the target pre-processing matrix.

It should be understood that the apparatus 300 herein is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (eg, a shared processor, a proprietary processor, or a group) for executing one or more software or firmware programs. Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality. In an optional example, those skilled in the art may understand that the apparatus 300 may be specifically the sending end in the foregoing embodiment, and the apparatus 300 may be used to perform various processes and/or steps corresponding to the sending end in the foregoing method embodiment. To avoid repetition, we will not repeat them here.

The foregoing device 300 corresponds to the transmitting end in the method embodiment, and the corresponding unit performs corresponding steps, for example, the sending unit performs the step sent in the method embodiment, and the receiving unit performs the step received in the method embodiment, except for sending and receiving. Other steps can be performed by the processing unit. For the function of the specific unit, reference may be made to the corresponding method embodiment, and details are not described.

The transmitting end of each of the foregoing solutions has a function of implementing corresponding steps performed by the transmitting end in the foregoing method; the function may be implemented by hardware, or may be implemented by hardware corresponding software. The hardware or software includes one or more units corresponding to the above functions; for example, the transmitting unit may be replaced by a transmitter, the receiving unit may be replaced by a receiver, and other modules, such as a processing unit, etc., may be replaced by a processor, respectively performing Transmission operations, reception operations, and related processing operations in various method embodiments.

FIG. 8 is a schematic block diagram of an apparatus 400 for processing data in accordance with an embodiment of the present application, for example, the apparatus may be a transmitting end in the method 200. As shown in FIG. 8, the apparatus 800 includes a transceiver 410, a processor 420, and a memory 430. The memory 430 is configured to store instructions for executing the instructions stored by the memory 430 to control the transceiver 410 to receive signals or transmit signals.

The processor 420 is configured to map modulation symbols to at least one transport layer; the processor 420 is further configured to determine, in the pre-processing matrix set, a first target pre-processing matrix, where any two of the pre-processing matrix sets The processor 420 is further configured to preprocess the modulation symbols on the first transport layer in the at least one transport layer by using the first target pre-processing matrix to obtain the first pre-processed a modulation symbol on the transport layer, the pre-processing being specifically: Y=W*X, X characterizing the input of the pre-processing, Y characterizing the output of the pre-processing, W being a pre-processing matrix; transceiver 410 for The modulation symbol mapping on the pre-processed first transport layer is sent to the receiving end on the transmission resource.

It should be understood that the apparatus 400 may be specifically the transmitting end in the embodiment related to the foregoing method 200, and may be used to perform various steps and/or processes corresponding to the sending end in the embodiment related to the method 200 described above. Optionally, the memory 430 can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory can also store information of the device type. The processor 410 can be configured to execute instructions stored in the memory such that the apparatus 400 performs the various steps and/or processes of the embodiments associated with the method 200 corresponding to the transmitting end.

It should be understood that the transceiver described above can include a transmitter and a receiver. The transceiver may further include an antenna, and the number of antennas may be one or more. The memory can be a separate device or integrated into the processor. The above various devices or parts of the device can be integrated into the chip for implementation, such as integration into a baseband chip.

It should be understood that in the embodiment of the present application, the processor 420 may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application specific integrated circuits (ASICs). Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The present application also provides a chip in which instructions are stored which, when run on the chip, cause the chip to perform the various steps and/or processes of the method of the embodiment shown in FIG.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. 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 particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A method for processing data, the method being applied to a transmitting end, the method comprising:

Mapping modulation symbols onto at least one transport layer;

Determining, in a set of pre-processing matrices, a first target pre-processing matrix, wherein any two pre-processing matrices in the pre-processing matrix set are different;

Pre-processing the modulation symbols on the first transport layer in the at least one transport layer by using the first target pre-processing matrix to obtain a modulation symbol on the pre-processed first transport layer, where the pre-processing is specifically : Y = W * X, X characterizes the input of the preprocessing, Y characterizes the output of the preprocessing, and W is a preprocessing matrix;

Mapping the modulation symbols on the pre-processed first transport layer to the receiving end on the transmission resource.
The method of claim 1 wherein said set of pre-processing matrices comprises at least one sparse matrix, each column of said sparse matrices comprising at least one zero element.
The method according to claim 1 or 2, wherein the first target pre-processing matrix is orthogonal to the first pre-processing matrix in the pre-processing matrix set.
The method according to any one of claims 1 to 3, wherein the mapping of the modulated symbol on the pre-processed first transport layer to the receiving end on the transmission resource comprises:

Precoding the modulation symbols on the preprocessed first transport layer to obtain precoded symbols;

Mapping the precoding symbol to the receiving end on the transmission resource.
The method according to any one of claims 1 to 4, wherein the pre-processing of modulation symbols on the first transport layer in the at least one transport layer is performed by using the first target pre-processing matrix Obtaining a modulation symbol on the first transport layer after preprocessing, including:

Performing a block processing on the modulation symbols on the first transport layer to obtain a plurality of modulation symbols;

And preprocessing the multi-block modulation symbols by using the first target pre-processing matrix to obtain modulation symbols on the pre-processed first transport layer.
The method according to any one of claims 1 to 5, wherein the at least one transport layer is specifically a plurality of transport layers, and correspondingly, the method further comprises:

Performing a pre-processing operation on the modulation symbols on the second transport layer in the at least one transport layer by using a second target pre-processing matrix in the pre-processing matrix set to obtain a pre-processed modulation symbol on the second transport layer ;

Correspondingly, the mapping, on the transmission resource, the modulation symbol on the pre-processed first transport layer is sent to the receiving end, including:

Mapping the modulated symbols on the pre-processed first transport layer and the modulated symbols on the pre-processed second transport layer to the receiving end on the transmission resource;

The first target pre-processing matrix is the same as or different from the second target pre-processing matrix.
The method according to any one of claims 1 to 6, wherein the method further comprises:

Performing a discrete Fourier transform on the modulated symbols on the preprocessed first transport layer before mapping the modulated symbols on the preprocessed first transport layer to the receiving end on the transmission resource , the transformed modulation symbol sequence is obtained.
The method according to any one of claims 1 to 7, wherein the transmitting end is a terminal device, and before the determining the first target pre-processing matrix in the pre-processing matrix set, the method further includes:

Receiving indication information sent by the network device, where the indication information is used to indicate the first target pre-processing matrix in the pre-processing set;

The determining the first target pre-processing matrix in the pre-processing matrix set includes:

Determining a first target pre-processing matrix from the set of pre-processing matrices according to the indication information.
The method according to claim 8, wherein the indication information is used to indicate an index of the first target pre-processing matrix in the pre-processing matrix set, or the indication information is used to indicate the A pre-processing matrix subset in the pre-processing matrix set and an index of the first target pre-processing matrix in the pre-processing sub-set.
The method according to claim 8, wherein the indication information indicates a modulation mode and an index of a first target pre-processing matrix, and correspondingly, determining, according to the indication information, from the pre-processing matrix set a target pre-processing matrix, comprising: determining a pre-processing matrix indicated by the index in the pre-processing matrix set corresponding to the modulation mode as the target pre-processing matrix; or

The indication information indicates a waveform and an index of the first target pre-processing matrix, and correspondingly, determining, according to the indication information, the first target pre-processing matrix from the pre-processing matrix set, including: corresponding to the waveform a preprocessing matrix indicated by the index in the set of preprocessing matrices is determined as the target preprocessing matrix; or

The indication information indicates a modulation mode, a waveform, and an index of the first target pre-processing matrix, and correspondingly, determining, according to the indication information, the first target pre-processing matrix from the pre-processing matrix set, including: And a pre-processing matrix indicated by the index in the pre-processing matrix set corresponding to the combination of the waveform and the modulation mode is determined as the target pre-processing matrix.
An apparatus for processing data, the apparatus comprising:

a processing unit, configured to map modulation symbols to at least one transport layer;

The processing unit is further configured to determine a first target pre-processing matrix in the pre-processing matrix set, where any two pre-processing matrices in the pre-processing matrix set are different;

The processing unit is further configured to preprocess the modulation symbols on the first transport layer in the at least one transport layer by using the first target pre-processing matrix to obtain a pre-processed modulation symbol on the first transport layer. The preprocessing is specifically: Y=W*X, X characterizes the input of the preprocessing, Y characterizes the output of the preprocessing, and W is a preprocessing matrix;

The transceiver unit is configured to map the modulated symbol on the pre-processed first transport layer to the receiving end on the transmission resource.
The apparatus according to claim 11, wherein said set of preprocessing matrices comprises at least one sparse matrix, each column of said sparse matrix comprising at least one zero element.
The apparatus according to claim 11 or 12, wherein the first target pre-processing matrix is orthogonal to a first pre-processing matrix in the set of pre-processing matrices.
The device according to any one of claims 11 to 13, wherein the processing unit is further configured to:

Precoding the modulation symbols on the preprocessed first transport layer to obtain precoded symbols;

The sending unit is specifically configured to: map the precoding symbol to the receiving end and send the precoding symbol to the receiving end.
The device according to any one of claims 11 to 14, wherein the processing unit is specifically configured to:

Performing a block processing on the modulation symbols on the first transport layer to obtain a plurality of modulation symbols;

And preprocessing the multi-block modulation symbols by using the first target pre-processing matrix to obtain modulation symbols on the pre-processed first transport layer.
The device according to any one of claims 11 to 15, wherein the at least one transport layer is specifically a plurality of transport layers, and correspondingly, the processing unit is further configured to:

Performing a pre-processing operation on the modulation symbols on the second transport layer in the at least one transport layer by using a second target pre-processing matrix in the pre-processing matrix set to obtain a pre-processed modulation symbol on the second transport layer ;

The transceiver unit is further configured to:

Mapping the modulated symbols on the pre-processed first transport layer and the modulated symbols on the pre-processed second transport layer to the receiving end on the transmission resource;

The first target pre-processing matrix is the same as or different from the second target pre-processing matrix.
The device according to any one of claims 11 to 16, wherein the processing unit is further configured to:

Performing a discrete Fourier transform on the modulated symbols on the preprocessed first transport layer before mapping the modulated symbols on the preprocessed first transport layer to the receiving end on the transmission resource , the transformed modulation symbol sequence is obtained.
The device according to any one of claims 11 to 17, wherein the device is a terminal device, and the transceiver unit is further configured to:

Receiving the indication information sent by the network device, where the indication information is used to indicate the first target pre-processing matrix in the pre-processing set, before determining the first target pre-processing matrix in the pre-processing matrix set;

The processing unit is specifically configured to: determine, according to the indication information, a first target pre-processing matrix from the set of pre-processing matrices.
The apparatus according to claim 18, wherein the indication information is used to indicate an index of the first target pre-processing matrix in the pre-processing matrix set, or the indication information is used to indicate the A pre-processing matrix subset in the pre-processing matrix set and an index of the first target pre-processing matrix in the pre-processing sub-set.
The apparatus according to claim 18, wherein the indication information indicates a modulation mode and an index of a first target pre-processing matrix, and correspondingly, the processing unit is further configured to: correspond to the modulation mode Preprocessing the matrix indicated by the index in the set of preprocessing matrix is determined as the target preprocessing matrix; or

The indication information indicates a waveform and an index of the first target pre-processing matrix. The processing unit is further configured to determine, as the pre-processing matrix indicated by the index in the pre-processing matrix set corresponding to the waveform, The target preprocessing matrix; or

The indication information indicates a modulation mode, a waveform, and an index of the first target pre-processing matrix. Correspondingly, the processing unit is further configured to: set a pre-processing matrix corresponding to the combination of the waveform and the modulation mode The pre-processing matrix indicated by the index is determined as the target pre-processing matrix.
A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, the computer program causing the apparatus for processing data to perform the method of any one of claims 1 to 10.