WO2023036051A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2023036051A1
WO2023036051A1 PCT/CN2022/116602 CN2022116602W WO2023036051A1 WO 2023036051 A1 WO2023036051 A1 WO 2023036051A1 CN 2022116602 W CN2022116602 W CN 2022116602W WO 2023036051 A1 WO2023036051 A1 WO 2023036051A1
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symbol
type
symbol component
length
information
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PCT/CN2022/116602
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English (en)
French (fr)
Inventor
刘凤威
徐明慧
张佳胤
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP22866515.4A priority Critical patent/EP4391467A1/en
Priority to CA3231177A priority patent/CA3231177A1/en
Publication of WO2023036051A1 publication Critical patent/WO2023036051A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the embodiments of the present application relate to the field of wireless communication, and in particular, to a communication method and device.
  • the guard interval can resist the multipath effect in the following ways:
  • the guard interval can remove inter symbol interference (ISI) between adjacent received symbols;
  • ISI inter symbol interference
  • the guard interval converts the linear convolution of the channel and the symbol into a circular convolution of the channel and the symbol.
  • the symbol receiving end can use frequency domain equalization method to eliminate multipath effects.
  • the guard interval can be zero guard interval (zero padding, ZP), or cyclic prefix (cyclic prefix, CP) or cyclic suffix (cyclic suffix, CS).
  • cyclic prefix CP
  • cyclic suffix cyclic suffix
  • CP cyclic prefix
  • the existing CP configuration method can realize the resistance to part of the multipath effect, but in the actual environment, there may be a path (hereinafter referred to as path P) whose delay difference with the first path exceeds the length of the CP.
  • the difference between the moment of arriving at the receiving end through the first path and the moment of arriving at the receiving end through the path P exceeds the duration of CP, wherein, the moment of arriving at the receiving end through the first path of the transmitted signal is earlier than The time at which the transmitted signal reaches the receiving end through other paths.
  • the received signal corresponding to the path P cannot completely fall into the conventional fast Fourier transform (FFT) receiving window, that is, a part of the signal that reaches the receiving end through the path P will be lost, and at the same time, the conventional FFT of the first OFDM symbol In the FFT receiving window, the signal that reached the receiving end through the path P in the previous time slot will also be received.
  • FFT fast Fourier transform
  • the time delay difference between the path P and the first path is longer, more signals arriving through the path P are lost, and at the same time, the received interference of the previous time slot arriving through the path P is also more. When the lost signal and received interference are large enough, it will affect the performance of the first OFDM symbol.
  • the embodiment of the present application provides a communication method and device to ensure the performance of the first OFDM symbol when the delay difference between the path P and the first path exceeds the length of the CP.
  • the present application provides a communication method, the method includes: a terminal device acquires first information and second information, the first information is used to determine the length of a symbol component of the first type, and the second information is used to determining at least one of a length of a second-type symbol component and a length of a third-type symbol component, the length of the first-type symbol component being greater than the length of the third-type symbol component; the terminal device according to the first The information and the second information determine a plurality of block signals, each of the block signals includes a plurality of modulation symbols, and each block signal in the plurality of block signals is processed to obtain an OFDM corresponding to the block signal symbols, and transmit the OFDM symbols.
  • the first block signal includes the first type symbol component and the second type symbol component
  • the second block signal includes the first type symbol component and the second type symbol component in the first block signal The same modulation symbol as the second type symbol component
  • the k+1th block signal includes the same modulation symbol as the second type symbol component and the third type symbol component in the kth block signal, k ⁇ 2, k is an integer.
  • the FFT receiving window corresponding to the first OFDM symbol can be delayed backward compared with the conventional FFT receiving window, so that the signal of the first OFDM symbol that reaches the path P can completely fall into the first FFT receiving window , to reduce the inter-symbol interference on the first OFDM symbol.
  • the first OFDM symbol is a DMRS symbol
  • the estimation accuracy of the channel based on DMRS estimation is guaranteed, thereby ensuring the demodulation performance.
  • the first type symbol components are the first X modulation symbols in the first block signal;
  • the starting modulation symbol of the modulation symbol with the same first type symbol component is m-1 modulation symbols different from the last modulation symbol of the second block signal, where the value of m is based on the duration of the cyclic prefix Determined, m>1, X>1;
  • the second type symbol component in the k-1th block signal is the last Y modulation symbol in the k-1th block signal, and in the k-th block signal
  • the end modulation symbol of the modulation symbol that is the same as the second type symbol component in the k-1 block signal is different from the last modulation symbol of the k block signal by m modulation symbols, Y ⁇ 1;
  • the third type symbol component in the kth block signal is the first Z modulation symbols in the kth block signal, Z ⁇ X, Z ⁇ 1, in the k+1th block signal wherein, the first modulation symbol of the modulation symbol that is the same as the third type symbol component
  • the length of the symbol component of the third type is a first preset value; the second information indicates the sum of the length of the symbol component of the second type and the length of the cyclic prefix.
  • the second information can be carried or indicated by multiplexing existing fields or adding new fields, and then indicating the lengths of various second-type symbol components can be realized.
  • the first information indicates a difference between the length of the first type of symbol component and the length of the third type of symbol component.
  • the configuration of a type symbol component is simple and convenient.
  • the terminal device determines a plurality of block signals according to the first information and the second information
  • the terminal device determines the number of transmission blocks according to the first information and the second information size
  • the terminal device determines a plurality of block signals corresponding to the third information according to the size of the transmission block
  • the third information is information that the terminal device needs to send to the network device.
  • the terminal device determines the second The number of modulation symbols included in one type of symbol component, and the number of modulation symbols included in the second type of symbol component is determined according to the length of the second type of symbol component, and the number of modulation symbols included in the third type of symbol component is determined according to the length of the third type of symbol component The number of modulation symbols included in the three types of symbol components.
  • the terminal device determines the number of first resource units according to the number of modulation symbols included in the first type symbol component, the number of modulation symbols included in the second type symbol component, and the number of modulation symbols included in the third type symbol component,
  • the first number of resource units indicates the number of resource units corresponding to the same modulation symbol between different block signals in a time slot.
  • the terminal device determines the size of the transmission block according to the second number of resource units and the first number of resource units, and the second number of resource units is the number of resource units used to transmit the third information in one time slot .
  • the resources reserved for inter-block replication are considered, and then the difference between the actual code rate and the configured code rate can be achieved within a certain range, and the demodulation performance can be guaranteed.
  • the terminal device may determine the size of the transport block according to the second resource unit number and the first resource unit number in the following manner: the terminal device determines the size of the transport block according to the second resource unit number The difference between the number of resource units and the first number of resource units determines the size of the transport block; or, the terminal device determines the size of the transport block according to the difference between the second number of resource units and the first quantization value, and the The first quantization value is obtained by quantizing the first resource unit number according to a preset interval.
  • the resources reserved for inter-block replication are taken into account when calculating the size of the transmission block, so that demodulation performance can be guaranteed.
  • the unit of the length of the first type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the second type symbol component The unit of length is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the unit of the length of the third type symbol component is the number of samples after IFFT, or the absolute time unit , or the number of samples after IFFT under the specified number of FFT points.
  • the present application provides a communication method, which includes: the network device sends first information and second information to the terminal device, the first information is used to determine the length of the first type of symbol component, and the second The information is used to determine at least one of a length of a second type of symbol component and a length of a third type of symbol component, the length of the first type of symbol component being greater than the length of the third type of symbol component.
  • the network device receives a plurality of OFDM symbols from the terminal device, determines a receiving window corresponding to each OFDM symbol in the plurality of OFDM symbols, and obtains a demodulated signal of each OFDM symbol according to the receiving window corresponding to each OFDM symbol .
  • the plurality of OFDM symbols are in one-to-one correspondence with a plurality of block signals, wherein each block signal includes a plurality of modulation symbols, and the first block signal includes the first type symbol component and the second type symbol component; the second block signal includes the same modulation symbol as the first type symbol component and the second type symbol component in the first block signal; the k+1th block signal includes the same modulation symbol as the kth
  • the modulation symbols of the second type symbol component and the third type symbol component in the block signal are the same, k ⁇ 2, and k is an integer.
  • the FFT receiving window corresponding to the first OFDM symbol can be delayed backwards compared with the conventional FFT receiving window, so that the signal of the first OFDM symbol reached through the path P can completely fall into the first FFT receiving window Within, the inter-symbol interference on the first OFDM symbol is reduced.
  • the first OFDM symbol is a DMRS symbol, the estimation accuracy of the channel based on DMRS estimation is guaranteed, thereby ensuring the demodulation performance.
  • the first type symbol components are the first X modulation symbols in the first block signal;
  • the starting modulation symbol of the modulation symbol with the same first type symbol component is m-1 modulation symbols different from the last modulation symbol of the second block signal, where the value of m is based on the duration of the cyclic prefix Determined, m>1, X>1;
  • the second type symbol component in the k-1th block signal is the last Y modulation symbol in the k-1th block signal, and in the k-th block signal
  • the end modulation symbol of the modulation symbol that is the same as the second type symbol component in the k-1 block signal is different from the last modulation symbol of the k block signal by m modulation symbols, Y ⁇ 1;
  • the third type symbol component in the kth block signal is the first Z modulation symbols in the kth block signal, Z ⁇ X, Z ⁇ 1, in the k+1th block signal wherein, the first modulation symbol of the modulation symbol that is the same as the third type symbol component
  • the network device determines the length of the plurality of OFDM symbols according to the length of the first type symbol component.
  • the receiving window corresponding to the first OFDM symbol in the symbol, the starting point of the receiving window corresponding to the first OFDM symbol is associated with the length of the first type symbol component, and the network device according to the duration of the cyclic prefix The time determines the receiving window corresponding to the kth OFDM symbol.
  • the interval between the end point of the receiving window corresponding to the first OFDM symbol and the starting point of the receiving window corresponding to the second OFDM symbol is T1 sampling points
  • the end of the receiving window corresponding to the kth OFDM symbol is T2 sampling points
  • T1 ⁇ T2 the interval between the point and the starting point of the receiving window corresponding to the k+1th OFDM symbol
  • the receiving window corresponding to the first OFDM symbol is delayed according to the length of the first type of symbol component, and the method of determining the receiving window of other OFDM symbols remains unchanged, which can reduce the intersymbol interference on the first OFDM symbol. Simple and easy to implement.
  • the network device when the network device determines the receiving window corresponding to the first OFDM symbol among the plurality of OFDM symbols according to the length of the first type symbol component, the network device according to the The length of the symbol component of the first type determines at least one candidate receiving window, and the network device determines the receiving window corresponding to the first OFDM symbol from the at least one candidate receiving window according to preset parameters.
  • the interval between any two adjacent starting points among the starting points of the at least one candidate receiving window is ⁇ T sampling points, ⁇ T is a preset value, and ⁇ T is a positive integer.
  • a receiving window with better performance can be selected from multiple candidate receiving windows as the receiving window corresponding to the first OFDM symbol.
  • the network device determines the received signal of the block signal corresponding to each OFDM symbol according to the demodulated signal of each OFDM symbol, and the network device determines the received signal of the block signal corresponding to each OFDM symbol according to the first information and the second information
  • the received signal of the block signal corresponding to each OFDM symbol is demapped, and the network device obtains received bit information according to the demapped result.
  • the network device demaps the received signal of the block signal corresponding to each OFDM symbol according to the first information and the second information, but is not limited to the following manner:
  • Mode 1 The network device performs demapping according to the received signal corresponding to the first type of symbol component and the received signal corresponding to the second type of symbol component in the received signal of the first block signal, and the network device performs demapping according to the received signal of the first type of symbol component Demapping the received signal corresponding to the third type symbol component and the received signal corresponding to the second type symbol component among the received signals of the k block signals;
  • Mode 2 The network device uses the received signal corresponding to the first type symbol component in the first block signal in the received signal of the second block signal, and the second type symbol component corresponding to the first block signal The received signal of the k+1th block signal is demapped, and the network device is based on the received signal corresponding to the third type symbol component in the kth block signal in the received signal of the k+1th block signal, and all the received signals corresponding to the kth block signal performing demapping on the received signal of the second type symbol component;
  • the network device corresponds to the first type of the first block signal in the received signal of the first block signal according to the received signal corresponding to the first type of symbol component in the received signal of the second block signal
  • the average value of the received signal of the second type of symbol component of the block signal is demapped, and the received signal of the kth block signal corresponding to the received signal of the third type of symbol component and the k+1th block signal the average value of the received signal corresponding to the third type symbol component in the kth block signal in the received signal, and the sum of the received signal corresponding to the second type symbol component in the received signal of the kth block signal Demapping is performed on an average value of the received signal corresponding to the second type of symbol component in the kth block signal in the received signal of the k+1 block signal.
  • Mode 4 When the network device determines that the noise power of the received signal of the kth block signal is lower than the noise power of the received signal of the k+1th block signal, the network device according to the kth block Demapping the received signal corresponding to the third type symbol component and the received signal corresponding to the second type symbol component in the received signal of the signal; determining the noise of the received signal of the kth block signal in the network device When the power is higher than the noise power of the received signal of the k+1th block signal, the network device corresponds to the third type of symbol component in the kth block signal in the received signal of the k+1th block signal Demapping is performed on the received signal of the received signal and the received signal corresponding to the second type symbol component of the kth block signal.
  • the success rate of demodulation can be improved.
  • the network device determines the size of the transmission block according to the first information and the second information, and the network device decodes the received bit information according to the size of the transmission block to obtain the third information, and the third information is information that the terminal device needs to send to the network device.
  • the network device determines the second The number of modulation symbols included in one type of symbol component, and the number of modulation symbols included in the second type of symbol component is determined according to the length of the second type of symbol component, and the number of modulation symbols included in the third type of symbol component is determined according to the length of the third type of symbol component The number of modulation symbols included in the three types of symbol components; the network device according to the number of modulation symbols included in the first type of symbol components, the number of modulation symbols included in the second type of symbol components, and the number of modulation symbols included in the third type of symbol components The number of modulation symbols determines the first number of resource units, and the first number of resource units indicates the number of resource units corresponding to the same modulation symbol between different block signals in a time slot; the network device according to the second number of resource units and the first number of resource units A number of resource units determines the size of the transport block, and the second number of resource
  • the resources reserved for inter-block replication are considered, and then the difference between the actual code rate and the configured code rate can be achieved within a certain range, and the demodulation performance can be guaranteed.
  • the network device determines the size of the transport block according to the second resource unit number and the first resource unit number
  • the network device determines the size of the transport block according to the second resource unit number and the first resource unit number
  • a difference in the number of resource units determines the size of the transport block; or, the network device determines the size of the transport block according to a difference between the second number of resource units and a first quantization value, and the first quantization value is The first number of resource units is obtained after being quantized according to a preset interval.
  • the resources reserved for inter-block duplication are taken into consideration when calculating the size of the transmission block, so that the demodulation performance can be guaranteed.
  • the length of the symbol component of the third type is a first preset value; the first information indicates the sum of the length of the symbol component of the second type and the length of the cyclic prefix.
  • the second information can be carried or indicated by multiplexing existing fields or adding new fields, and then indicating the lengths of various second-type symbol components can be implemented.
  • the first information further indicates a difference between the length of the first type of symbol component and the length of the third type of symbol component.
  • the configuration of a type symbol component is simple and convenient.
  • the unit of the length of the first type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the second type symbol component The unit of length is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the unit of the length of the third type symbol component is the number of samples after IFFT, or the absolute time unit , or the number of samples after IFFT under the specified number of FFT points.
  • the present application provides a communication device, the device is a terminal device or a module for realizing functions of the terminal device, and the device includes a transceiver module and a processing module;
  • the transceiver module is used to acquire first information and second information, the first information is used to determine the length of the first type symbol component, and the second information is used to determine the length of the second type symbol component and the third At least one of the lengths of type symbol components, the length of the first type symbol component is greater than the length of the third type symbol component;
  • the processing module is configured to determine according to the first information and the second information a plurality of block signals, each of which includes a plurality of modulation symbols, and processing each block signal in the plurality of block signals to obtain an OFDM symbol corresponding to the block signal;
  • the transceiver module is configured to send the OFDM symbol.
  • the first block signal includes the first type symbol component and the second type symbol component
  • the second block signal includes the first type symbol component and the second type symbol component in the first block signal The same modulation symbol as the second type symbol component
  • the k+1th block signal includes the same modulation symbol as the second type symbol component and the third type symbol component in the kth block signal, k ⁇ 2, k is an integer
  • the first type symbol components are the first X modulation symbols in the first block signal;
  • the starting modulation symbol of the modulation symbol with the same first type symbol component is m-1 modulation symbols different from the last modulation symbol of the second block signal, where the value of m is based on the duration of the cyclic prefix Determined, m>1, X>1;
  • the second type symbol component in the k-1th block signal is the last Y modulation symbol in the k-1th block signal, and in the k-th block signal
  • the end modulation symbol of the modulation symbol that is the same as the second type symbol component in the k-1 block signal is different from the last modulation symbol of the k block signal by m modulation symbols, Y ⁇ 1;
  • the third type symbol component in the kth block signal is the first Z modulation symbols in the kth block signal, Z ⁇ X, Z ⁇ 1, in the k+1th block signal wherein, the first modulation symbol of the modulation symbol that is the same as the third type symbol component
  • the length of the symbol component of the third type is a first preset value; the second information indicates the sum of the length of the symbol component of the second type and the length of the cyclic prefix.
  • the first information indicates a difference between the length of the first type of symbol component and the length of the third type of symbol component.
  • the processing module is configured to determine the size of a transport block according to the first information and the second information when determining multiple block signals according to the first information and the second information ; determining multiple block signals corresponding to third information according to the size of the transmission block, where the third information is information that the terminal device needs to send to the network device.
  • the processing module is configured to, when determining the size of a transport block according to the first information and the second information, determine the first The number of modulation symbols included in the type symbol component, and the number of modulation symbols included in the second type symbol component is determined according to the length of the second type symbol component, and the third type is determined according to the length of the third type symbol component The number of modulation symbols included in the type symbol component; determine the number of modulation symbols included in the first type symbol component, the number of modulation symbols included in the second type symbol component, and the number of modulation symbols included in the third type symbol component A number of resource units, the first number of resource units indicates the number of resource units corresponding to the same modulation symbol between different block signals in a time slot; the transmission block is determined according to the second number of resource units and the first number of resource units The size of the second resource unit is the number of resource units used to transmit the third information in one time slot.
  • the processing module is configured to, when determining the size of the transport block according to the second number of resource units and the first number of resource units, The difference between the number of resource units determines the size of the transport block; or, the size of the transport block is determined according to the difference between the second number of resource units and a first quantization value, the first quantization value being the first resource
  • the number of units is quantified according to a preset interval.
  • the unit of the length of the first type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the second type symbol component The unit of length is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the unit of the length of the third type symbol component is the number of samples after IFFT, or the absolute time unit , or the number of samples after IFFT under the specified number of FFT points.
  • the present application provides a communication device, the device is a network device or a device for implementing functions of the network device, and the device includes a transceiver module and a processing module;
  • the transceiver module is configured to send first information and second information to the terminal device, the first information is used to determine the length of the first type of symbol component, and the second information is used to determine the length of the second type of symbol component and at least one of the length of the third type symbol component, the length of the first type symbol component is greater than the length of the third type symbol component; the transceiver module is used to receive a plurality of OFDM symbols from a terminal device, the The plurality of OFDM symbols are in one-to-one correspondence with a plurality of block signals, wherein each of the block signals includes a plurality of modulation symbols, and the first block signal includes the first type symbol component and the second type symbol component; the second block signal includes the same modulation symbol as the first type symbol component and the second type symbol component in the first block signal; the k+1th block signal includes the same modulation symbol as the kth block signal In the signal, the second type symbol component and the third type symbol component are the same modulation symbol, k ⁇ 2, k is an integer; the processing
  • the first type symbol components are the first X modulation symbols in the first block signal;
  • the starting modulation symbol of the modulation symbol with the same first type symbol component is m-1 modulation symbols different from the last modulation symbol of the second block signal, where the value of m is based on the duration of the cyclic prefix Determined, m>1, X>1;
  • the second type symbol component in the k-1th block signal is the last Y modulation symbol in the k-1th block signal, and in the k-th block signal
  • the end modulation symbol of the modulation symbol that is the same as the second type symbol component in the k-1 block signal is different from the last modulation symbol of the k block signal by m modulation symbols, Y ⁇ 1;
  • the third type symbol component in the kth block signal is the first Z modulation symbols in the kth block signal, Z ⁇ X, Z ⁇ 1, in the k+1th block signal wherein, the first modulation symbol of the modulation symbol that is the same as the third type symbol component
  • the processing module is configured to determine the plurality of OFDM symbols according to the length of the first type symbol component when determining the receiving window corresponding to each OFDM symbol in the plurality of OFDM symbols
  • the receiving window corresponding to the first OFDM symbol in the OFDM symbol, the starting point of the receiving window corresponding to the first OFDM symbol is associated with the length of the first type symbol component; determine the first according to the duration of the cyclic prefix
  • the receiving window corresponding to k OFDM symbols wherein, the interval between the end point of the receiving window corresponding to the first OFDM symbol and the starting point of the receiving window corresponding to the second OFDM symbol is T1 sampling points, and the kth
  • the interval between the end point of the receiving window corresponding to each OFDM symbol and the starting point of the receiving window corresponding to the k+1th OFDM symbol is T2 sampling points, T1 ⁇ T2, and T1 and T2 are positive integers.
  • the processing module is configured to determine the receiving window corresponding to the first OFDM symbol among the plurality of OFDM symbols according to the length of the first type symbol component, according to the first The length of a type of symbol component determines at least one candidate receiving window, and determines the receiving window corresponding to the first OFDM symbol from the at least one candidate receiving window according to preset parameters; wherein, the starting point of the at least one candidate receiving window The interval between any two adjacent starting points among the starting points is ⁇ T sampling points, and ⁇ T is a preset value and is a positive integer.
  • the processing module is further configured to determine the received signal of the block signal corresponding to each OFDM symbol according to the demodulated signal of each OFDM symbol, according to the first information and the second information The received signal of the block signal corresponding to the OFDM symbol is demapped, and received bit information is obtained according to the demapped result.
  • the processing module demaps the received signal of the block signal corresponding to each OFDM symbol according to the first information and the second information, but is not limited to the following manner:
  • Mode 1 The processing module performs demapping according to the received signal corresponding to the first type of symbol component and the received signal corresponding to the second type of symbol component in the received signal of the first block signal, and the processing module performs demapping according to the first type of symbol component Demapping the received signal corresponding to the third type symbol component and the received signal corresponding to the second type symbol component among the received signals of the k block signals;
  • Method 2 The processing module is based on the received signal corresponding to the first type symbol component in the first block signal in the received signal of the second block signal, and the second type symbol component corresponding to the first block signal
  • the received signal of the k+1th block signal is demapped, and the processing module is based on the received signal of the k+1th block signal corresponding to the third type of symbol component in the kth block signal, and the corresponding kth block signal. performing demapping on the received signal of the second type symbol component;
  • Mode 3 The processing module according to the received signal corresponding to the first type of symbol component in the received signal of the first block signal and the first type in the received signal of the second block signal corresponding to the first block signal The average value of the received signal of the symbol component, and the received signal of the received signal of the first block signal corresponding to the second type of symbol component and the received signal of the second block signal corresponding to the first The average value of the received signal of the second type of symbol component of the block signal is demapped, and the received signal of the kth block signal corresponding to the received signal of the third type of symbol component and the k+1th block signal the average value of the received signal corresponding to the third type symbol component in the kth block signal in the received signal, and the sum of the received signal corresponding to the second type symbol component in the received signal of the kth block signal Demapping is performed on an average value of the received signal corresponding to the second type of symbol component in the kth block signal in the received signal of the k+1 block signal.
  • Mode 4 When the processing module determines that the noise power of the received signal of the kth block signal is lower than the noise power of the received signal of the k+1th block signal, the processing module according to the kth block In the received signal of the signal, the received signal corresponding to the third type symbol component and the received signal corresponding to the second type symbol component are demapped; the noise of the received signal of the kth block signal is determined in the processing module When the power is higher than the noise power of the received signal of the k+1th block signal, the processing module according to the third type symbol component in the received signal of the k+1th block signal corresponding to the kth block signal Demapping is performed on the received signal of the received signal and the received signal corresponding to the second type symbol component of the kth block signal.
  • the processing module is further configured to determine the size of the transport block according to the first information and the second information; decode the received bit information according to the size of the transport block to obtain the third information, and the third information is information that the terminal device needs to send to the network device.
  • the processing module is configured to, when determining the size of a transport block according to the first information and the second information, determine the first The number of modulation symbols included in the type symbol component, and the number of modulation symbols included in the second type symbol component is determined according to the length of the second type symbol component, and the third type is determined according to the length of the third type symbol component.
  • the number of modulation symbols included in the type symbol component is determined according to the number of modulation symbols included in the first type symbol component, the number of modulation symbols included in the second type symbol component, and the number of modulation symbols included in the third type symbol component.
  • a number of resource units, the first number of resource units indicates the number of resource units corresponding to the same modulation symbol between different block signals in a time slot, and the transmission block is determined according to the second number of resource units and the first number of resource units
  • the size of the second resource unit is the number of resource units used to transmit the third information in one time slot.
  • the processing module is configured to, when determining the size of the transport block according to the second number of resource units and the first number of resource units, The difference between the number of resource units determines the size of the transport block; or, the size of the transport block is determined according to the difference between the second number of resource units and a first quantization value, the first quantization value being the first resource
  • the number of units is quantified according to a preset interval.
  • the length of the symbol component of the third type is a first preset value; the first information indicates the sum of the length of the symbol component of the second type and the length of the cyclic prefix.
  • the first information further indicates a difference between the length of the first type of symbol component and the length of the third type of symbol component.
  • the unit of the length of the first type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the second type symbol component The unit of length is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the unit of the length of the third type symbol component is the number of samples after IFFT, or the absolute time unit , or the number of samples after IFFT under the specified number of FFT points.
  • the present application further provides a device.
  • the device can perform the method design described above.
  • the apparatus may be a chip or a circuit capable of performing the function corresponding to the above method, or a device including the chip or circuit.
  • the apparatus includes: a memory, configured to store computer executable program codes; and a processor, and the processor is coupled to the memory.
  • the program codes stored in the memory include instructions, and when the processor executes the instructions, the device or the device installed with the device executes the method in any one of the above possible designs.
  • the device may further include a communication interface, which may be a transceiver, or, if the device is a chip or a circuit, the communication interface may be an input/output interface of the chip, such as an input/output pin.
  • a communication interface which may be a transceiver, or, if the device is a chip or a circuit, the communication interface may be an input/output interface of the chip, such as an input/output pin.
  • the device includes corresponding functional units for respectively implementing the steps in the above method.
  • the functions may be implemented by hardware, or may be implemented by executing corresponding software through hardware.
  • Hardware or software includes one or more units corresponding to the functions described above.
  • the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is run on a device, the method in any one of the above-mentioned possible designs is executed.
  • the present application provides a computer program product, the computer program product includes a computer program, and when the computer program is run on a device, the method in any one of the above possible designs is executed.
  • the present application provides a communication system, the system includes a terminal device and a network device, wherein the terminal device is used to implement any possible design in the first aspect, and the network device is used to implement any of the possible designs in the first aspect. any possible design.
  • Fig. 1 is the schematic diagram of the first diameter and diameter P in the present application
  • FIG. 2A is a schematic structural diagram of a mobile communication system applied in an embodiment of the present application.
  • FIG. 2B is a schematic diagram of a baseband functional module of a communication system in an embodiment of the present application.
  • Fig. 3 is the schematic diagram of the power consumption and the linearity index of the power amplifier in the embodiment of the present application.
  • FIG. 4B is a schematic diagram of signal generation of SC-QAM in an embodiment of the present application.
  • FIG. 5 is an overview flowchart of a communication method in an embodiment of the present application.
  • Fig. 6B is a schematic diagram B of division of the length difference between NCP and ECP in the embodiment of the present application;
  • Fig. 6E is a schematic diagram E of dividing the length difference between NCP and ECP in the embodiment of the present application.
  • FIG. 8 is a schematic diagram of generating a block signal in an embodiment of the present application.
  • FIG. 9 is a schematic diagram of time-domain symbols after OFDM symbols are added with CPs in an embodiment of the present application.
  • FIG. 10 is one of schematic diagrams of receiving windows of OFDM symbols in an embodiment of the present application.
  • FIG. 11 is the second schematic diagram of the receiving window of the OFDM symbol in the embodiment of the present application.
  • Fig. 12 is one of the structural schematic diagrams of a device in the embodiment of the present application.
  • Fig. 13 is the second structural schematic diagram of a device in the embodiment of the present application.
  • this application can be applied to but not limited to the following scenarios: multi-site transmission (the same user equipment (User Equipment, UE) transmits signals between multiple transmission points at the same time), backhaul, wireless broadband to the home (wireless to the x, WTTx), enhanced mobile broadband (eMBB), device to device (device to device, D2D) and other scenarios.
  • multi-site transmission the same user equipment (User Equipment, UE) transmits signals between multiple transmission points at the same time
  • backhaul wireless broadband to the home (wireless to the x, WTTx), enhanced mobile broadband (eMBB), device to device (device to device, D2D) and other scenarios.
  • eMBB enhanced mobile broadband
  • D2D device to device
  • the network elements involved in this application may include but not limited to terminal equipment and network equipment.
  • the network device may be a device capable of communicating with the terminal device.
  • Network devices can be base stations, relay stations or access points.
  • the base station can be a base transceiver station (base transceiver station, BTS) in a global system for mobile communication (GSM) or a code division multiple access (code division multiple access, CDMA) network, or a broadband
  • a base station (NodeB, NB) in code division multiple access (wideband code division multiple access, WCDMA) may also be a base station (evolutional NodeB, eNB) in LTE.
  • the network device may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • cloud radio access network cloud radio access network, CRAN
  • the network device may also be a base station device in a 5G network or a next-generation network (such as 6G), or a network device in a future evolved shared land mobile network (public land mobile network, PLMN) network.
  • a network device can also be a wearable device or an in-vehicle device.
  • a terminal device may be a UE, an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a terminal agent, or a terminal device, among others.
  • the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (PDA), a Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or next-generation networks (such as 6G) or terminal devices in future evolved PLMN networks wait.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the technical solutions provided by the embodiments of the present application can be applied to various communication systems. For example: it can be applied to long term evolution (long term evolution, LTE) system or 5G system, and can also be applied to other future-oriented new systems, such as 6G system, programmable user plane system, which is not specifically limited in the embodiment of the present application . Also, the term “system” and “network” may be used interchangeably.
  • the baseband functional modules of the communication system used in this application may be as shown in FIG. 2B .
  • Resource element (resource element, RE) mapping module used to map signals that can be mapped to subcarriers in the frequency domain to subcarriers;
  • IFFT Inverse Fast Fourier Transformation
  • Add CP module it is used to copy the tail X l signals of OFDM symbol 1 in the unit of OFDM symbol 1, and add them to the head of the OFDM symbol 1; then connect the end to end of adjacent OFDM symbols, and send them out in chronological order .
  • X1 is a predefined or preconfigured CP length determination.
  • the receiving end includes but not limited to the following modules:
  • Removing CP and FFT module used to remove the CP from the received signal according to the position of the FFT receiving window, serial-parallel convert it into multiple OFDM symbols, and convert multiple OFDM symbols to the frequency domain to obtain OFDM demodulated signals;
  • Inverse Discrete Fourier Transformation Inverse Discrete Fourier Transformation, IDFT
  • IDFT Inverse Discrete Fourier Transformation
  • each signal in the block signal is a QAM modulated signal.
  • each signal in the received signal of the block signal is not a standard QAM modulated signal.
  • Deblocking mapping module used for parallel-to-serial conversion of the received signal of the block signal
  • QAM demodulation module used to demodulate the modulation symbols after the parallel-to-serial conversion into received bit information
  • Decoding module used to complete the decoding of the received bit information according to the redundant code of the check code.
  • the sending end may further include a digital-to-analog-converter (DAC), a power amplifier (power amplifier, PA), a mixer, and the like.
  • the receiving end may also include an analog-to-digital converter (analog-to-digital converter, ADC), a low noise amplifier (low noise amplifier, LNA), a mixer, and the like. It can be understood that the sending end and the receiving end may also include other modules, which is not limited in this application.
  • y(k) is the signal to be mapped on the subcarrier
  • N is the number of subcarriers in the scheduling bandwidth
  • x(i) is the modulation symbol
  • the modulation method includes quadrature amplitude modulation (QAM) modulation , Quadrature phase shift keying (quadrature phase shift keying, QPSK) modulation, ⁇ /2 phase shift binary phase shift keying ( ⁇ /2 shifted binary phase shift keying, ⁇ /2-BPSK) modulation, amplitude phase shift Keying (amplitude phase shift keying, APSK) modulation, non-uniform QAM modulation, etc.
  • QAM quadrature amplitude modulation
  • QPSK Quadrature phase shift keying
  • ⁇ /2 phase shift binary phase shift keying ⁇ /2 shifted binary phase shift keying, ⁇ /2-BPSK
  • amplitude phase shift Keying amplitude phase shift keying, APSK
  • single-carrier waveforms such as DFT-s-OFDM have low PAPR, they are widely used in various communication systems (such as LTE systems, NR systems). Among them, under the same power, a lower PAPR waveform can provide greater output power and higher power amplifier efficiency, thereby achieving the purpose of improving coverage and reducing energy consumption. The advantages of coverage and power consumption brought by the lower PAPR waveform are particularly obvious on the terminal equipment side. Furthermore, in the existing versions of the LTE system and the NR system, single-carrier waveforms are used for uplink transmission.
  • the NR standard in the frequency band above 52.6 GHz may introduce DFT-s-OFDM waveform or single carrier quadrature amplitude modulation (single carrier-quadrature amplitude modulation, SC-QAM) waveform in the downlink.
  • DFT-s-OFDM waveform or single carrier quadrature amplitude modulation (single carrier-quadrature amplitude modulation, SC-QAM) waveform in the downlink.
  • SC-QAM single carrier quadrature amplitude modulation
  • Multipath refers to the propagation phenomenon of radio signals traveling from a transmitting antenna to a receiving antenna through multiple paths.
  • High frequency refers to the frequency band above 6GHz, mainly including 28GHz, 39GHz, 60GHz, 73GHz, etc. Because of its rich spectrum resources, it has become a hot spot for research and development in the industry to solve the growing communication needs. In particular, the spectrum from 52.6 to 71 GHz is characterized by large bandwidth. In order to make full use of this spectrum resource and increase the peak rate or throughput, the industry proposes to increase the bandwidth occupied by a single carrier from the current 400 MHz of NR to about 2 GHz or more. At the same time, due to the limitations of the hardware of the terminal equipment and the increasingly high requirements for data demodulation delay, the maximum number of FFT points and the maximum number of resource blocks are limited.
  • ⁇ means approximately equal to, and it is obtained by rounding up according to the formula, such as: round(x) means that x is rounded up.
  • the calculation formula of NCP is: round(144*1e9/(SCS*2048)), the unit is nanosecond (ns), and the unit of SCS is Hz; where, NCP refers to the CP length excluding special symbols, and special symbols refer to First symbol every 0.5ms.
  • FIG. 4A a schematic diagram of signal generation of CP-DFT-s-OFDM is shown in FIG. 4A .
  • the signal generation and transmission process of CP-DFT-s-OFDM are as follows: source bit encoding (corresponding to the source bit generation module and encoding module in Figure 2B), modulation (corresponding to the QAM modulation module in Figure 2B), serial-to-parallel conversion ( Corresponding to the mapping/permutation module in Figure 2B), DFT (corresponding to the DFT module in Figure 2B), subcarrier mapping (corresponding to the RE mapping module in Figure 2B), IFFT, adding CP (copying the signal at the end of the symbol to the head, In Fig. 4A, the symbol at the bottom is copied to the top), which is transmitted via the antenna after parallel-to-serial conversion.
  • the black circle can be understood as subcarrier mapping.
  • cyclic prefix SC-QAM (cyclic prefix-SC-QAM, CP-SC-QAM) can also generate a guard interval based on CP, and its signal generation schematic diagram is shown in Figure 4B.
  • the signal generation of CP-SC-QAM does not have DFT, subcarrier mapping and IFFT operations/modules, but more operations/modules of upsampling and filters.
  • the length of the FFT receiving window corresponding to each OFDM symbol is the length of one OFDM symbol
  • the starting position of the FFT receiving window corresponding to each OFDM symbol is determined according to the end position of the CP.
  • the start position of the FFT receiving window corresponding to the first OFDM symbol is the end position of the CP corresponding to the first OFDM symbol in the received signal corresponding to the first path.
  • the start position of the FFT receiving window corresponding to the second OFDM symbol is the end position of the CP corresponding to the second OFDM symbol in the received signal corresponding to the first path.
  • point A is the position where the cyclic prefix is intercepted in each OFDM symbol, for example, the signal from point A in the first OFDM symbol to the end position of the first OFDM symbol is copied to the beginning of the first OFDM symbol Before the start position, it is used as the CP corresponding to the first OFDM symbol.
  • the signal from point A in the second OFDM symbol to the end position of the second OFDM symbol is copied before the start position of the second OFDM symbol as the CP corresponding to the second OFDM symbol.
  • the received signal corresponding to the path P cannot completely fall into the FFT receiving window determined by the above method. Specifically, for the first OFDM symbol, a part of the signal arriving at the receiving end through the path P will be lost (as shown by the thick line square in Figure 1), and the part of the signal shown by the thick line square does not fall into the first
  • the FFT receiving window corresponding to OFDM symbols, and this part of the signal is located before point A in the first OFDM symbol, that is, this part of the signal is not copied before the start position of the first OFDM symbol, therefore, this part of the signal can be considered is a useful signal that is lost.
  • the FFT receiving window corresponding to the first OFDM symbol will also receive the signal from the previous time slot through the path P to the receiving end (as shown by the thick circle in Figure 1), which will cause interference to the first OFDM symbol .
  • the lost signal and received interference are large enough, it will affect the performance of the first OFDM symbol.
  • the estimation accuracy of the channel estimated based on the DMRS will be reduced, thereby reducing the demodulation performance.
  • the path P can refer to any one of the paths whose time delay with the first path exceeds the CP, or the path P means that the time delay with the first path exceeds the NCP and the time delay with the first path is the longest or a path whose energy exceeds the first preset threshold and whose time delay with the first path exceeds the NCP, or whose power exceeds the second preset threshold and whose time delay with the first path exceeds the NCP.
  • the embodiment of the present application provides a communication method that can reduce the loss of useful signals of the first OFDM symbol and reduce interference, thereby ensuring the performance of the first OFDM symbol.
  • the method includes:
  • Step 500 The network device sends the first information and the second information to the terminal device.
  • the first information is used to determine the length of the first type of symbol component
  • the second information is used to determine at least one of the length of the second type of symbol component and the length of the third type of symbol component
  • the first type of symbol component The length of is greater than the length of the third type symbol component.
  • the unit of the length of the first type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points. For example, if the specified number of FFT points is 2048, then the specified number of FFT points is The number of samples after IFFT is 288, and its length is twice the length of the NCP.
  • the unit of the length of the second type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points.
  • the unit of the length of the third type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points.
  • the unit of the length of NCP (or ECP) is ns, which is the absolute time unit. Therefore, the unit of the length of NCP (or ECP) can be converted into the number of samples after IFFT, or the specified number of FFT points under IFFT After the number of sample points, the unit of the length of the NCP (or ECP) and the length unit of the first type symbol component (or the unit of the length of the second type symbol component or the unit of the length of the third type symbol component) can be converted by the unit ) for unification.
  • the length of the symbol component of the first type can be configured independently or through a difference.
  • the difference value can also be understood as a difference value.
  • the lengths of the first type symbol components are individually configured.
  • the first information may indicate the length or the index of the length of the symbol component of the first type.
  • the length of the symbol component of the first type is configured by means of a difference.
  • the first information may indicate the difference between the length of the first type of symbol component and the length of the third type of symbol component or the difference between the length index of the first type of symbol component and the length index of the third type of symbol component, or the difference between the length index of the first type of symbol component and the length index of the third type of symbol component.
  • the information may indicate the difference between the length of the first type symbol component and the length of the second type symbol component or the difference between the length index of the first type symbol component and the length index of the second type symbol component.
  • the lengths of multiple first-type symbol components and the lengths of multiple third-type symbol components are preconfigured, where the length of each first-type symbol component corresponds to an index, and the length of each third-type symbol component corresponds to an index index.
  • the first information may indicate a difference between the length index of the first type symbol component and the length index of the third type symbol component
  • the second information may indicate the length index of the third type symbol component.
  • the terminal device may determine the length index of the first type of symbol component according to the first information and the second information, and then determine the length of the first type of symbol component.
  • the lengths of multiple first-type symbol components and the lengths of multiple second-type symbol components are preconfigured, where the length of each first-type symbol component corresponds to an index, and the length of each second-type symbol component corresponds to an index.
  • the first information may indicate a difference between the length index of the first type symbol component and the length index of the second type symbol component
  • the second information may indicate the length index of the second type symbol component.
  • the terminal device may determine the length index of the first type of symbol component according to the first information and the second information, and then determine the length of the first type of symbol component.
  • the length of the preconfigured symbol component and the corresponding index can be directly stored in the network device and the terminal device without signaling notification; optionally, the length of the preconfigured symbol component and the corresponding index can also be The terminal equipment is notified through network equipment signaling, which is not limited in this application.
  • the length of the first type of symbol component is configured by the difference value
  • the above two examples are only exemplified by the difference value of the length index.
  • the length index can also be directly replaced by the length , as yet another implementation manner, for the sake of brevity, details are not described here.
  • the second information is used to determine the length of the symbol component of the second type.
  • the length of the symbol component of the third type may be preconfigured or predefined by the protocol.
  • the length of the symbol component of the third type is a first preset value, where the first preset value may be pre-configured or predefined by a protocol.
  • the second information indicates the sum of the length of the second type symbol component and the length of the NCP.
  • the length sum of the length of the second type symbol component and the length of NCP can be between the length of NCP and the length of ECP, or the length sum of the length of the second type symbol component and the length of NCP can also be greater than or equal to the length of ECP ( For example 2 times ECP).
  • the sum of the length of the second type symbol component and the length of the NCP may also be referred to as the length of the equivalent CP. It can be understood that the sum of the length of the second-type symbol component and the length of the NCP is calculated after converting the unit of the length of the NCP and the unit of the length of the second-type symbol component into the same unit.
  • the terminal device may determine the length of the second type of symbol component according to the sum of the length of the second type of symbol component and the length of the NCP, and the length of the NCP.
  • Example 1 uses Example 1 and Example 2 as examples to illustrate the first implementation of the second information:
  • the length of the symbol component of the third type is the first preset value, and the second information is only used to determine the length of the symbol component of the second type.
  • the second information may be carried in a configuration information element (for example, PUSCH-Config) of a physical uplink shared channel (physical uplink share channel, PUSCH), specifically, existing fields may be multiplexed in PUSCH-Config Or add a new field to carry or indicate the second information.
  • SCPHeadandTail indicates that the sum of the length of the second type symbol component and the length of NCP is NCP
  • SCPHeadandTail indicates that the sum of the length of the second type symbol component and the length of the NCP is NCP+15/16*(ECP-NCP).
  • SCPHeadandTail indicates that the sum of the length of the second type symbol component and the length of the NCP is NCP+7/16*(ECP-NCP).
  • SCPHeadandTail when the value of SCPHeadandTail is 0, SCPHeadandTail indicates that the sum of the length of the second type symbol component and the length of the NCP is NCP, at this time, the length of the second type symbol component is 0, generally speaking, the length of the second type symbol component is not 0, therefore, the value of SCPHeadandTail is generally not 0, in this case, 0 can be used as the default value.
  • M being 15 is only an example, and other values are also possible.
  • the length difference between NCP and ECP is evenly divided as an example.
  • the length difference between NCP and 2 times ECP can also be divided evenly, or the length difference between NCP and 0.8 times ECP can also be divided Evenly divide the difference in length, which is not limited in this application.
  • the value of SCPHeadandTail can also be multiple values in (0, 1, ..., M), and the network device can further indicate one of the multiple values as the configuration used by the terminal device.
  • the network device may send a media access control control element (media access control control element, MAC CE) message or downlink control information (downlink control information, DCI) to indicate one of multiple values to the terminal device.
  • media access control control element media access control control element, MAC CE
  • DCI downlink control information
  • the network device sends an RRC message to the terminal device, the RRC message includes a PUSCH-Config information element, the PUSCH-Config information element includes SCPHeadandTail, and the values of SCPHeadandTail are 3, 5, and 7.
  • the network device may also send DCI to the terminal device, and the DCI indicates that the value of SCPHeadandTail is 3. Furthermore, the terminal device may determine the length of the second type of symbol component according to the value of SCPHeadandTail being 3.
  • the network device uses DCI to directly indicate a value of SCPHeadandTail for the terminal device
  • the overhead of each DCI is large.
  • the network device may need to frequently send DCI to indicate a new SCPHeadandTail, and the DCI overhead problem is more obvious.
  • the network device can first indicate multiple values of SCPHeadandTail, and then further indicate one of the multiple values of SCPHeadandTail through DCI, thereby reducing DCI overhead.
  • the network device can indicate the values of 3 SCPHeadandTail through the RRC message or the MAC CE message, and then send DCI to the terminal device according to the current channel condition, and the DCI is used to indicate one of the 3 SCPHeadandTail values.
  • the DCI only needs 2 bits to indicate one of the 3 SCPHead and Tail values.
  • the network device can send DCI to the terminal device to update the value of SCPHeadandTail.
  • the DCI can still indicate the value of 3 SCPHeadandTail One of them, the DCI overhead is still 2 bits. Therefore, the overhead of DCI can be reduced by adopting the above method.
  • Example 1 Using the method provided in Example 1 above, by multiplexing existing fields or adding new fields in the configuration information element of PUSCH to carry or indicate the second information, it is possible to implement targeted configuration of the second type for each terminal device.
  • the length of the symbol component, this method is highly flexible and easy to implement.
  • SCP1 ⁇ SCP K are the sum of the lengths of K second type symbol components and the length of NCP. That is to say, the second information may be indicated by cyclicPrefix, specifically, indicating the sum of the length of the second type symbol component and the length of the NCP.
  • the cyclicPrefix option can also indicate multiple of: ⁇ extended, SCP1, SCP2, ..., SCP K ⁇ , and the network device can further indicate one of the multiple cyclicPrefix options as a configuration used by the terminal device.
  • the network device may send a MAC CE or DCI to indicate a specific cyclicPrefix option to the terminal device.
  • the network device sends an RRC message to the terminal device, the RRC message includes BWP configuration, the BWP configuration includes a cyclicPrefix option (that is, second information), and the cyclicPrefix option indicates SCP1 and SCP2.
  • example 2 Compared with the existing CP that can only be selected in NCP and ECP, example 2 provides more choices of CP lengths, for example, SCP1, SCP2,..., SCP K, and can be compatible at the same time existing system.
  • the second information is used to determine the length of the second type of symbol component and the length of the third type of symbol component.
  • the second information may respectively indicate the length of the second type of symbol component and the length of the third type of symbol component.
  • the second information may be carried in a PUSCH configuration information element (for example, PUSCH-Config).
  • fields SCPHeadPart and SCPTailPart may be added in PUSCH-Config to carry or indicate the second information.
  • SCPHeadPart and SCPTailPart respectively indicate the length or length index of the third type symbol component and the length or length index of the second type symbol component. That is, SCPHeadPart and SCPTailPart indicate the length or index of the length of the third type symbol component and the length or index of the length of the second type symbol component as the second information.
  • each combination includes the length of a first type symbol component, the length of a second type symbol component and the length of a third type symbol component, each combination corresponds to an index, the index Corresponding to the length of a first-type symbol component, the length of a second-type symbol component, and the length of a third-type symbol component.
  • the first information and the second information can be used as one piece of information, and the information indicates a set of indexes corresponding to the length of the first type symbol component, the length of the second type symbol component, and the length of the third type symbol component by indicating the combined index .
  • the corresponding relationship between the combined index and the length of the symbol component can be configured to the terminal device in advance, for example, in the form of a mapping relationship table.
  • the terminal device receives the combined index, it can directly obtain the corresponding symbol component by looking up the table. length, further saving signaling overhead.
  • the second information may be carried in a PUSCH configuration information element (for example, PUSCH-Config), for example, a new field is added in the PUSCH-Config, and the new field may carry or indicate the second information.
  • the new field indicates the length of the symbol component of the third type and the sum of the length of the symbol component of the second type and the length of the NCP.
  • the new field may be represented by SCPHeadandTail, and the value of SCPHeadandTail may be one of (0, 1, . . . , M), where M is a positive integer greater than or equal to 2.
  • the size of M depends on the number of shares obtained by evenly dividing the difference between NCP and ECP, so that the sum of the length of the second type symbol component and the length of NCP can be between NCP and ECP.
  • Values of 8 to 15 all indicate that the length of the third type symbol component is H2, where H1 and H2 are pre-configured or predefined by the protocol.
  • the specific method of determining the sum of the length of the second type symbol component and the length of the NCP according to the value of SCPHeadandTail can refer to the relevant content of the above example 1, and the repetition will not be repeated.
  • the value of SCPHeadandTail is 8-15, it is necessary to first convert the value of SCPHeadandTail to the range of 0-7. Specifically, when the value of SCPHeadandTail is 8-15, the difference between the value of SCPHeadandTail and 8 may be obtained first, and the sum of the length of the second-type symbol component and the length of the NCP may be determined according to the difference.
  • the sum of the length of the second type symbol component and the length of the NCP is the same as the sum of the length of the second type symbol component and the length of the NCP when the value of SCPHeadandTail is 4, or It is described that when the value of SCPHeadandTail is 12, the length of the second type of symbol component is the same as that of the second type of symbol component when the value of SCPHeadandTail is 4.
  • the sum of the length of the second type symbol component and the length of the NCP is the same as when the value of SCPHeadandTail is W, the sum of the length of the second type symbol component and the length of the NCP
  • the length of the second type of symbol component is the same as that of the second type of symbol component when the value of SCPHeadandTail is W, wherein, 1 ⁇ W ⁇ 7 , W is an integer.
  • Dh corresponds to the third type
  • Dh and Dt are indicated by way of joint coding, wherein the joint coding value ranges from 0 to 19, and each joint coding value corresponds to a unique set of Dh and Dt.
  • the joint coding value ranges from 0 to 19
  • each joint coding value corresponds to a unique set of Dh and Dt.
  • the value range of Dh is 0-B max
  • Step 510 The terminal device determines multiple block signals according to the first information and the second information, and each block signal includes multiple modulation symbols.
  • the terminal device may determine the size of the transmission block according to the first information and the second information.
  • the configuration code rate is configured by the network device for the terminal device, for example, it can be obtained according to the MCS table lookup.
  • both ends of the sending and receiving information need to re-determine the size of the transmission block, that is, according to the number of effective resource units (considering the resources reserved for inter-block replication ) to resize the transport block. It can be understood that the re-determined size of the transport block in the scenario where there is inter-block copy is smaller than the size of the determined transport block in the scenario where there is no inter-block copy (for example, the NCP scenario).
  • the terminal device can determine the number of sampling points M1 after IFFT of the first type of symbol component and the number of samples after IFFT of the second type of symbol component according to the first information and the second information.
  • the terminal device may determine the first number of resource units N1 according to the number of modulation symbols included in the first type of symbol components, the number of modulation symbols included in the second type of symbol components, and the number of modulation symbols included in the third type of symbol components.
  • the unit number N1 indicates the total number of resource units corresponding to the same modulation symbol between different block signals in a time slot.
  • Step 3 the terminal device can determine the size of the transport block according to the second number of resource units N2 and the first number of resource units N1, the second number of resource units N2 being the number of resource units used to transmit the third information in one time slot.
  • a time slot includes a symbol used to transmit DMRS
  • S symbols are used to transmit symbols of uplink data or measurement information or feedback information (excluding DMRS symbols)
  • the number of effective resources reduced by the symbol components repeated between blocks in the entire time slot is:
  • N2 is the number of resource units corresponding to S symbols in one time slot. Wherein, N2 may refer to the definition in the existing protocol, and specifically, refer to section 5.1.2.3 of the protocol 38.214.
  • the terminal device may adopt but not limited to the following manner:
  • the terminal device determines the size of the transport block according to the difference between the second number N2 of resource units and the first number N1 of resource units.
  • Adopting method 1 the resources reserved for inter-block replication are considered when calculating the size of the transmission block, which can ensure that the difference between the code rate and the configured code rate is within a certain range, thereby ensuring demodulation performance.
  • the difference between the second number of resource units N2 and the first number of resource units N1 is the effective number of resource units, which can also be understood as the number of resource units after removing resources reserved for inter-block copying.
  • the terminal device determines the size of the transport block according to the difference between the second number of resource units N2 and a first quantization value, where the first quantization value is obtained by quantizing the first number of resource units N1 at a preset interval.
  • the difference between the second resource unit number N2 and the first quantized value is the effective resource unit number.
  • q(N1) can be floor(N1/ ⁇ N)* ⁇ N, floor(...) means rounding down
  • ⁇ N is the preset quantization interval
  • ⁇ N 45
  • the value of q(N1) is 630.
  • Method 2 can consider the resources reserved for inter-block replication when calculating the size of the transmission block, and at the same time reserve a certain tolerance range for the calculation of N2 on both sides of the transceiver, and achieve a better balance between code rate improvement and transmission block reduction A compromise, and at the same time, a certain error can also be allowed when both the transceiver and the transceiver end calculate N2.
  • Coding module used to add redundancy codes, check codes, etc. to the original source bits
  • QAM modulation module used to map encoded bits into modulation symbols according to the modulation order
  • Mapping/arranging module used to map or arrange modulation symbols into multiple block signals, or called serial-to-parallel conversion.
  • the QAM modulation module maps modulation symbols to blocks in sequence, and completes the serial-to-parallel conversion, as shown in the left figure of Figure 7, the arrow from top to bottom indicates that the modulation symbols in a block follow the order from top to bottom
  • the order of mapping is sequentially mapped, and the dotted arrows from left to right indicate the mapping process of modulation symbols between multiple blocks, that is, after the modulation signal mapping in a block is completed, continue to map to the block on the right adjacent to the block modulation symbol.
  • the thick black line represents the resource or location reserved for the copy operation, and the QAM modulation symbol is not mapped.
  • a copy operation is performed, that is, part of the modulation symbols of one block is copied to another adjacent block.
  • the copy operation in this application refers to "forward copy", that is, copying the previous block The modulation symbols of the to the next block.
  • the direction indicated by arrow 1 indicates that the first type of symbol component on block 1 (that is, the shaded part shown by the left oblique line in the DMRS block) is copied to block 2
  • the direction indicated by arrow 2 indicates that The second type symbol component on block 1 (that is, the shaded part shown by the cross line in the DMRS block) is copied to block 2
  • the direction indicated by arrow 3 represents the third type symbol component on block 2 (that is, the data block 0
  • the shaded part shown by the vertical line) is copied to block 3
  • the direction indicated by arrow 4 indicates that the second type symbol component on block 2 (that is, the shaded part shown by the cross line on data block 0) is copied to block 3 .
  • the direction indicated by arrow 5 indicates that the third type of symbol component on block 3 (that is, the shaded part shown by the vertical line on data block 1) is copied to block 4, and the direction indicated by arrow 6 indicates the second type of symbol component on block 3 (that is, the shaded part shown by the crosshatch on data block 1) is copied to block 4.
  • the multiple block signals have the following characteristics: the first block signal includes the first type symbol component and the second type symbol component, and the second block signal includes the first type symbol component and the second type symbol component in the first block signal Modulation symbols with the same symbol components, the k+1th block signal includes the same modulation symbols as the second type symbol component and the third type symbol component in the kth block signal, k ⁇ 2, k is an integer.
  • the first type symbol component is the first X modulation symbols in the first block signal, and in the second block signal, the start of the same modulation symbol as the first type symbol component in the first block signal
  • There is a difference of m-1 modulation symbols between the modulation symbol and the last modulation symbol of the second block signal where the value of m is determined according to the duration of the NCP, m>1, X>1, X is an integer, and m is integer.
  • the duration of the m modulation symbols is the same or approximately equal to the duration of the NCP.
  • the duration of the m modulation symbols is approximately equal to the duration of the NCP, which may be understood as a difference between the duration of the m modulation symbols and the duration of the NCP is smaller than a preset threshold.
  • the modulation symbol that is the same as the first type of symbol component in the first block signal is denoted as the symbol component P in the second block signal
  • the symbol component in the second block signal The difference between the start modulation symbol of P and the last modulation symbol of the second block signal is m-1 modulation symbols, which can also be described as, the start symbol of the symbol component P in the second block signal and the second block signal
  • the last modulation symbol interval of m-2 modulation symbols wherein, these m-2 modulation symbols do not include the start modulation symbol of the symbol component P in the second block signal, nor include the last modulation symbol of the second block signal
  • a modulation symbol, m-2> 0.
  • the second type symbol component in the k-1th block signal is the last Y modulation symbol in the k-1th block signal, in the kth block signal, and the second type symbol in the k-1th block signal There is a difference of m modulation symbols between the end modulation symbol of the modulation symbol with the same component and the last modulation symbol of the k-th block signal, Y ⁇ 1, and Y is an integer.
  • the modulation symbol that is the same as the second type symbol component in the k-1th block signal is denoted as the symbol component Q in the kth block signal
  • the modulation symbol in the kth block signal The difference between the end modulation symbol of the symbol component Q and the last modulation symbol of the kth block signal is m modulation symbols, which can also be described as, the end modulation symbol of the symbol component Q in the kth block signal is different from the kth block signal
  • the third type of symbol component in the kth block signal is the first Z modulation symbols in the kth block signal, Z ⁇ X, Z ⁇ 1, Z is an integer, in the k+1th block signal, and the kth
  • the difference between the start modulation symbol of the modulation symbols with the same third type symbol component and the last modulation symbol of the k+1th symbol is m-1 modulation symbols in the block signal.
  • the modulation symbol that is the same as the third type symbol component in the kth block signal is recorded as the symbol component R in the k+1th block signal, and the k+1th block signal
  • the starting modulation symbol of the symbol component R in the block signal is m-1 modulation symbols different from the last modulation symbol of the k+1th block signal, which can also be described as, the symbol component R in the k+1th block signal
  • the starting modulation symbol of and the last modulation symbol of the k+1th block signal are separated by m-2 modulation symbols, where the m-2 modulation symbols do not include the symbol component R in the k+1th block signal
  • three block signals are taken as an example to illustrate the specific structure of the block signals obtained in the embodiment of the present application.
  • the duration of m modulation symbols is the same as the duration of NCP, and it can also be understood that the number of modulation symbols corresponding to the NCP duration is m, that is, the boundary point A of each block is the position of the modulation symbol corresponding to the CP start position .
  • the symbol component corresponding to the head border of the first block signal is the first type symbol component (corresponding to dH0 in Figure 8), and the symbol component corresponding to the tail border of the first block signal is the second type symbol component (corresponding to dT0 in Figure 8).
  • the first type of symbol component in the first block signal is copied to the right of the boundary point A of the second block signal, which is the symbol component P in the second block signal, and the symbol component P in the second block signal
  • the first modulation symbol of is different from the last modulation symbol of the second block signal by m-1 modulation symbols.
  • the starting modulation symbol of the symbol component P in the second block signal refers to the first modulation symbol on the right side of point A in the second block signal.
  • the starting modulation symbol of the symbol component P in the second block signal is the n+1th modulation symbol in the second block signal
  • the last modulation symbol in the second block signal is the second block signal
  • the difference between the start modulation symbol of the symbol component P in the second block signal and the last modulation symbol of the second block signal is [(m+n)-(n+1) ] modulation symbols.
  • the second type of symbol component in the first block signal is copied to the left of the boundary point A of the second block signal, which is the symbol component Q in the second block signal, and the symbol component Q in the second block signal
  • the end modulation symbol of is different from the last modulation symbol of the second block signal by m modulation symbols.
  • the end modulation symbol of the symbol component Q in the second block signal refers to the first modulation symbol on the left side of point A in the second block signal.
  • the end modulation symbol of symbol component Q in the second block signal is the nth modulation symbol in the second block signal
  • the last modulation symbol in the second block signal is the nth modulation symbol in the second block signal m+n modulation symbols
  • the difference between the start modulation symbol of symbol component Q in the second block signal and the last modulation symbol of the second block signal is [(m+n)-n] modulation symbols.
  • the end modulation symbol of the symbol component Q in the second block signal and the start modulation symbol of the symbol component P in the second block signal are adjacent modulation symbols.
  • the symbol component corresponding to the head frame of the second block signal is the third type symbol component (corresponding to dH1 in Figure 8), and the symbol component corresponding to the tail frame of the second block signal is the second type symbol component ( Corresponds to dT1 in Figure 8).
  • the third type of symbol component in the second block signal is copied to the right of the boundary point A of the third block signal, which is the symbol component R in the third block signal, and the symbol component R in the third block signal
  • the first modulation symbol of is different from the last modulation symbol of the third block signal by m-1 modulation symbols.
  • the starting modulation symbol of the symbol component R in the third block signal refers to the first modulation symbol on the right side of point A in the third block signal.
  • the second type of symbol component in the second block signal is copied to the left of the boundary point A of the third block signal, which is the symbol component Q in the third block signal, and the symbol component Q in the third block signal
  • the end modulation symbol of is different from the last modulation symbol of the 3rd block signal by m modulation symbols.
  • the terminal device processes each block signal among the multiple block signals, which may mean that each block signal needs to perform the following operations in sequence: DFT, RE mapping, IFFT, and adding CP.
  • DFT digital to analog converter
  • RE mapping RE mapping
  • IFFT IFFT
  • adding CP CP
  • the block signal shown in Figure 8 is processed by DFT, RE mapping, and IFFT to obtain OFDM symbols, and a schematic diagram of the time-domain symbols after adding CP to the OFDM symbols, wherein the dotted box represents the signal corresponding to the equivalent CP.
  • the signals corresponding to the thick dashed box in Figure 9 are the same, so that all the signals corresponding to the time range of the thick solid line arrows realize the head-to-tail cycle characteristics, and the cycle length is the length of the NCP and the length of the signal corresponding to the tail frame (i.e. The sum of the length of the second type of symbol components), which is equivalent to the duration of the equivalent CP compared to NCP, which extends the duration corresponding to the second type of symbol components, and the duration of the equivalent CP of the second symbol is a thick line The duration of the box. Therefore, when the channels experienced by multiple terminal devices have different time delays, the equivalent CP with flexible and adjustable duration or length can be realized by configuring or setting the lengths of the second type symbol components with different lengths for multiple terminal devices.
  • the equivalent CP here has the same meaning as the sum of the length of the second type symbol component and the length of the NCP indicated by the second information, and can be referred to each other.
  • the second type symbol component is used to realize the flexible equivalent CP, and has longer length than NCP, and the first type symbol component and the third type symbol component are used to guarantee the receiving window (the thick dotted line arrow time in Fig. 9
  • the phase continuity at the edge of the receiving window makes the phase transition of the signal at the edge of the receiving window smooth without affecting the performance of the adjacent channel leakage power ratio (ACLR).
  • ACLR adjacent channel leakage power ratio
  • the receiving window corresponding to the first OFDM symbol can be delayed, so that the received signal of the first OFDM symbol arriving through the path P can also be received
  • the window is completely received, and at the same time, it is guaranteed that the received signal arriving through the first path can also be completely received, so as to reduce the impact of the path exceeding the NCP length on the performance of the first OFDM symbol.
  • P 1 is the average power of the first path
  • P p is the average power of the path P
  • the value of P th can be 15.
  • Step 530 The terminal device sends OFDM symbols.
  • the terminal device may sequentially process each block signal among the multiple block signals, obtain an OFDM symbol corresponding to the block signal, and send the OFDM symbol, that is, send an OFDM symbol each time an OFDM symbol is obtained , without waiting for the processing of other block signals to be completed, and then send them together with OFDM symbols respectively corresponding to other signals.
  • the terminal device sequentially processes each block signal in the multiple block signals to obtain OFDM symbols respectively corresponding to the multiple block signals, and the terminal device sequentially sends the OFDM symbols respectively corresponding to the multiple block signals in chronological order.
  • the receiving window corresponding to each OFDM symbol refers to the FFT receiving window corresponding to each OFDM symbol.
  • the network device can determine the receiving window corresponding to the first OFDM symbol in the following ways, but not limited to:
  • the network device can determine the receiving window corresponding to the first OFDM symbol according to the length of the first type of symbol component, and the starting point of the receiving window corresponding to the first OFDM symbol is associated with the length of the first type of symbol component.
  • the starting point of the receiving window corresponding to the first OFDM symbol may be a sampling point associated with the last modulation symbol of the first type symbol component in the first OFDM symbol.
  • the FFT receiving window of the first OFDM symbol is delayed by ⁇ t1 compared with the conventional FFT receiving window (as shown in the dotted box), corresponding to N delay1 sampling points after IFFT (or before FFT) .
  • ⁇ t1 and N delay1 sampling points after IFFT (or before FFT) are determined according to the length of the symbol component of the first type.
  • Method B The network device can determine the first receiving window corresponding to the first OFDM symbol and the starting point of the receiving window corresponding to the first OFDM symbol according to the difference between the length of the first type of symbol component and the length of the third type of symbol component Associated with the difference between the length of the first type of symbol component and the length of the third type of symbol component.
  • the starting point of the first receiving window may be the sampling point associated with the difference between the length of the first type symbol component and the length of the third type symbol component in the first OFDM symbol.
  • the FFT receiving window of the first OFDM symbol is delayed by ⁇ t2 as a whole, corresponding to N delay2 sampling points after IFFT (or before FFT).
  • ⁇ t2 and N delay2 sampling points after IFFT are determined according to the length of the first type symbol component and the difference between the length of the third type symbol component.
  • ⁇ t1> ⁇ t2 N delay1 >N delay2 .
  • the distance between any two adjacent starting points among the multiple candidate receiving window starting points is ⁇ T sampling points, ⁇ T is a preset value, and ⁇ T is a positive integer.
  • the preset parameters may include but not limited to noise power, bit error rate, minimum bit error rate, and one or more of QAM demodulated signal variance (mean squared error, MSE). Therefore, the network device can select the signal corresponding to the signal with the smallest noise power, or the lowest bit error rate or bit error rate, or the smallest variance of the QAM demodulated signal through the signals obtained by the receiving windows corresponding to the first OFDM symbol.
  • the receiving window of is used as the receiving window corresponding to the finally determined first OFDM symbol.
  • a sliding FFT receiving window is determined for the first OFDM symbol.
  • the kth time is delayed by k* ⁇ T sampling points after IFFT (or before FFT), and ⁇ T is the sliding FFT receiving window sliding step size.
  • the third sliding receiving window is the sampling point after N delay1 IFFT (or before FFT) of the conventional FFT receiving window. Then, the network device selects the FFT receiving window with the best performance as the FFT receiving window corresponding to the first OFDM symbol, for example, the noise power of the signal obtained through the FFT receiving window with the best performance is the smallest, and the bit error rate Or the lowest bit error rate or the smallest variance of the QAM demodulated signal. Alternatively, the network device selects the first FFT receiving window that can correctly demodulate the first OFDM symbol. For example, the network device can determine the first FFT receiving window that can correctly demodulate the first OFDM symbol according to the order of k values from small to large. FFT receiving window is used as the FFT receiving window corresponding to the first OFDM symbol.
  • the network device can determine the receiving window corresponding to each OFDM symbol according to the duration of the NCP.
  • the interval between the end point of the receiving window corresponding to the first OFDM symbol and the starting point of the receiving window corresponding to the second OFDM symbol is T1 sampling points
  • the end point of the receiving window corresponding to the kth OFDM symbol is the same as
  • the interval of the starting point of the receiving window corresponding to +1 OFDM symbol is T2 sampling points, T1 ⁇ T2, and T1 and T2 are positive integers.
  • the interval between the end point of the receiving window corresponding to the first OFDM symbol and the starting point of the receiving window corresponding to the second OFDM symbol (hereinafter referred to as the first OFDM symbol for short)
  • the interval between the receiving window corresponding to one OFDM symbol and the receiving window corresponding to the second OFDM symbol) is smaller than the interval between other adjacent receiving windows.
  • Step 550 The network device acquires the demodulated signal of each OFDM symbol according to the receiving window corresponding to each OFDM symbol.
  • the network device determines the receiving window corresponding to each OFDM symbol, it can obtain the OFDM symbol after de-CP is determined according to the receiving window corresponding to each OFDM symbol, and then perform the FFT operation in units of OFDM symbols, that is, to obtain The OFDM demodulated signal of each OFDM symbol is followed by subsequent channel equalization and DFT operations to obtain a received signal in units of blocks.
  • the network device demodulates the received signal of each block signal according to the first type symbol component, the second type symbol component and the third type symbol component to obtain received bit information.
  • the k-th block signal and the k+1-th block signal are respectively transmitted once.
  • the received signal corresponding to the first type symbol component and the second type symbol component in the received signal of the first block signal is different from the first symbol component in the first block signal.
  • the type sign component and the second type sign component are not identical.
  • the second block signal since the signal is interfered during transmission, although the second block signal includes the same modulation symbols as the first type symbol component and the second type symbol component in the first block signal, the reception of the second block signal The received signal corresponding to the first type of symbol component in the first block signal in the signal, and the received signal corresponding to the second type of symbol component in the first block signal are not corresponding to the first type in the received signal of the first block signal.
  • the received signal for the symbol components is identical to the received signal for the corresponding second type of symbol components.
  • the block signal includes multiple modulated signals
  • the received signal of the block signal includes received signals respectively corresponding to the multiple modulated signals.
  • the arrangement order of multiple modulation symbols in the block signal will not be changed. Therefore, the arrangement order of the received signals corresponding to the multiple modulated signals in the received signal of the block signal is the same as that of the multiple modulated symbols in the block signal. The arrangement order of the symbols is consistent.
  • the arrangement order of multiple modulation symbols in the block signal is modulation symbol 1, modulation symbol 2, and modulation symbol 3, and the received signals corresponding to the multiple modulated signals in the received signal of the block signal are arranged
  • the sequence is the received signal corresponding to modulation symbol 1, the received signal corresponding to modulation symbol 2, and the received signal corresponding to modulation symbol 3.
  • the i-th QAM modulation symbol of , n(i, t) represents the noise corresponding to the i-th QAM modulation symbol in the received signal of the t-th block signal received by the receiving end (for example, a network device);
  • A( i, t) represents the received signal corresponding to the i-th QAM modulation symbol among the received signals of the t-th block signal.
  • the received signals corresponding to the same QAM modulation symbol in the received signals of different block signals are different.
  • the first type symbol component and the second type symbol component in the first block signal are denoted as A 1
  • the first type symbol component in the second block signal and the first block signal and The second type of QAM modulation symbol with the same symbol component is denoted as B 1
  • the received signal corresponding to A 1 in the received signal of the first block signal is denoted as A 1 *
  • the received signal of the second block signal corresponds to B 1
  • the received signal of is denoted as B 1 * .
  • a 1 is the same as B 1 , because the signal is affected by interference and noise during transmission, A 1 * is different from A 1 , B 1 * is different from B 1 , and A 1 * is different from B 1 * .
  • the third-type symbol component and the second-type symbol component in the kth (k>1) block signal are denoted as A k
  • the k+1th block signal and the kth block signal The modulation symbol with the same three-type symbol component and the second-type symbol component is denoted as B k
  • the received signal corresponding to A k in the received signal of the kth block signal is denoted as A k *
  • the received signal corresponding to B k is denoted as B k * .
  • a k is the same as B k , and because signals are affected by interference and noise during transmission, A k * is different from A k , B k * is different from B k , and A k * is different from B k * .
  • the received signal of the block signal can be demapped in the following ways, but not limited to:
  • the network device performs demapping according to A 1 * , wherein A 1 * is used for demodulating A 1 ;
  • the network device performs demapping according to A k * , where A k * is used to demodulate A k .
  • the corresponding QAM modulation on the received signal blocks of the multiple block signals is sequentially performed in the block according to the mapping order of the QAM modulation symbols of the transmitting end in the order of the receiving time of the blocks between the blocks.
  • Demapping parallel-to-serial conversion
  • B 1 * , B 2 * , ... B k * ... B L * are skipped in sequence.
  • L is the total number of received signals of the block signal in one time slot.
  • demodulation is further completed according to the demapped received signal corresponding to the QAM modulated signal, and received bit information is acquired.
  • the demodulation of A k is completed according to the received signal corresponding to the QAM modulated signal after A k * demapping, that is, the signal obtained by A k * demapping is placed in the sequence S rx , and the signal obtained by A k * demapping is placed in S rx
  • the position in is the same as the position of the QAM modulation symbol corresponding to A k in the sequence S tx , where S rx represents the sequence composed of signals obtained by demapping the block signal of the entire time slot, and S tx represents the entire time slot to be mapped into a block A sequence of all QAM modulation symbols of a signal.
  • the network device performs demapping according to B 1 * , where B 1 * is used to demodulate A 1 ;
  • the network device performs demapping according to B k * , where B k * is used to demodulate A k .
  • the signal on the kth block is updated A k * to B k * , and then the blocks are received in order of block reception time, and the blocks are modulated according to the QAM of the transmitting end
  • the mapping order of the symbols sequentially demaps (parallel-serial conversion) the received signals of the corresponding QAM modulated signals on the received signal blocks of multiple block signals, wherein, during demapping, B 1 * , B 2 * , ... B k * ... B L * .
  • L is the total number of received signals of the block signal in one time slot.
  • demodulation is further completed according to the demapped received signal corresponding to the QAM modulated signal, and received bit information is obtained.
  • the demodulation of A k is completed according to the received signal corresponding to the QAM modulated signal after the updated A k * demapping, and the signal obtained by the updated A k * demapping is placed in the sequence S rx , and the updated A k *
  • the position of the demapped signal in S rx is the same as the position of the QAM modulation symbol corresponding to A k in the sequence Sqam, where S rx represents the sequence composed of signals obtained by demapping the block signal of the entire time slot, and S tx represents A sequence of all QAM modulation symbols to be mapped into a block signal on the entire time slot.
  • the above method 1 and method 2 indicate that the received signal of the modulation symbol corresponding to the same information content needs to be demodulated only once, and does not need to be demodulated twice, thereby improving the demodulation efficiency.
  • the network device performs demapping according to the average value of A 1 * and B 1 * , wherein the average value of A 1 * and B 1 * is used for demodulation of A1;
  • the network device performs demapping according to the average value of A k * and B k * , wherein the average value of A k * and B k * is used to demodulate A k .
  • the average value here can also be replaced by a weighted average value, etc., which is not limited in the present application.
  • a k * on the received signal of the kth block signal is updated as: A k * and B k *
  • the remaining steps are the same as in mode 1, that is, the blocks are in the order of the receiving time of the blocks, and the corresponding QAM modulation signals on the received signal blocks of multiple block signals are sequentially mapped in the block according to the mapping order of the QAM modulation symbols at the transmitting end.
  • Demapping parallel-serial conversion
  • L is the total number of received signals of the block signal in one time slot.
  • demodulation is further completed according to the demapped received signal corresponding to the QAM modulated signal, and received bit information is acquired.
  • the demodulation of A k is completed according to the received signal corresponding to the QAM modulated signal after the updated A k * demapping, and the signal obtained by the updated A k * demapping is placed in the sequence S rx , and the updated A k *
  • the position of the demapped signal in S rx is the same as the position of the QAM modulation symbol corresponding to A k in the sequence S tx , where S rx represents the sequence composed of signals obtained by demapping the block signal of the entire time slot, S tx Indicates the sequence composed of all QAM modulation symbols to be mapped into a block signal on the entire time slot.
  • the above method 3 combines two parts of received signals corresponding to modulation symbols of the same information content to demodulate, which can improve the success rate of demodulation.
  • Method 4 When the network device determines that the noise power of the received signal of the first block signal is lower than the noise power of the received signal of the second block signal, the network device performs demapping according to A 1 * , and the network device determines the first When the noise power of the received signal of the block signal is higher than the noise power of the received signal of the second block signal, the network device performs demapping according to B 1 * , such as updating A 1 * to B 1 * before demapping. Wherein, A 1 * and B 1 * are used to demodulate A 1 .
  • the network device determines that the noise power of the received signal of the kth block signal is lower than the noise power of the received signal of the k+1th block signal, the network device performs demapping according to A k * , and the network device determines the kth block When the noise power of the received signal of the signal is higher than the noise power of the received signal of the k+1th block signal, the network device performs demapping according to B k * , such as updating A k * to B k * before demapping.
  • a k * and B k * are used to demodulate A k .
  • the above method 4 selects the received signals of the part of modulation symbols with lower noise power for demodulation, which can improve the success rate of demodulation.
  • each compensation factor update corresponds to the demodulation mode.
  • Mode 1 The compensation factor of A k * is not updated, that is, the compensation factor based on A k * in the equalization process is retained as the final compensation factor.
  • Mode 2 update the compensation factor of A k * to the corresponding compensation factor of B k * .
  • Way 3 The compensation factor of A k * is updated to the compensation factor corresponding to the average value of A k * and B k * .
  • Method 4 When the noise power of the received signal of the kth block signal is lower than the noise power of the received signal of the k+1th block signal, the compensation factor of A k * is not updated, and the received signal of the kth block signal When the noise power of is higher than the noise power of the received signal of the k+1th block signal, the compensation factor of A k * is updated to the compensation factor corresponding to B k * .
  • the network device can determine the size of the transmission block in the same manner as the terminal device, and determine redundancy code, check code and other information based on the size of the transmission block, and complete the decoding of the received bit information based on these information.
  • the receiving window corresponding to the first OFDM symbol can be delayed backwards compared with the conventional receiving window, so that the signal of the first OFDM symbol reached through the path P can completely fall into the first OFDM symbol.
  • the inter-symbol interference on the first OFDM symbol is reduced.
  • the first OFDM symbol is a DMRS symbol, the estimation accuracy of the channel based on DMRS estimation is guaranteed, thereby ensuring the demodulation performance.
  • the value of m is determined according to the duration of the NCP, m>1, the position of the fourth type of symbol component is similar to the position of the second type of symbol component corresponding to the copy of the previous OFDM symbol, wherein, the fourth The symbolic components of type do not map signals.
  • the signal may not be mapped at the position where the last OFDM symbol of the previous time slot corresponds to the second type symbol component, so as to avoid its influence on the first symbol of the next time slot.
  • all symbols may have head components and tail components of the same length, that is, at this time, the length of the first type symbol component is the same as that of the third type symbol component.
  • receiving window 0 is a conventional FFT receiving window.
  • the starting point of the receiving window 0 may also be located at the sampling point corresponding to the last modulation symbol of dH0.
  • the starting point of the receiving window 0 may also be located at any sampling point between the sampling point corresponding to the last modulation symbol of CP and the sampling point corresponding to the last modulation symbol of dH0.
  • the method provided by the above embodiment shown in FIG. 5 can also be applied to sending OFDM symbols from a network device to a terminal device.
  • the sending of OFDM symbols from a terminal device to a network device is used as an example for illustration.
  • Fig. 12 shows a possible exemplary block diagram of an apparatus involved in the embodiment of the present application.
  • the apparatus 1200 includes: a transceiver module 1210 and a processing module 1220, and the transceiver module 1210 may include a receiving unit and a sending unit.
  • the processing module 1220 is used to control and manage the actions of the device 1200 .
  • the transceiver module 1210 is used to support the communication between the device 1200 and other network entities.
  • the device 1200 may further include a storage unit for storing program codes and data of the device 1200 .
  • each module in the apparatus 1200 may be implemented by software.
  • the processing module 1220 may be a processor or a controller, such as a general-purpose central processing unit (central processing unit, CPU), a general-purpose processor, digital signal processing (digital signal processing, DSP), an application-specific integrated circuit (application specific integrated circuits, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can realize or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosed content of the embodiments of the present application.
  • the processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and so on.
  • the transceiver module 1210 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is collectively referred to as, in a specific implementation, the communication interface may include multiple interfaces, and the storage unit may be a memory.
  • the processing module 1220 in the device 1200 can support the device 1200 to execute the actions of the terminal device in the above method examples, for example, it can support the device 1200 to execute steps 510 and 5 in FIG. Step 520.
  • the transceiver module 1210 may support communication between the apparatus 1200 and the network equipment, for example, the transceiver module 1210 may support the apparatus 1200 to execute steps 500 and 530 in FIG. 5 .
  • the device 1200 includes:
  • the transceiver module 1210 is configured to acquire first information and second information, the first information is used to determine the length of the first type symbol component, and the second information is used to determine the length of the second type symbol component and the second information At least one of the lengths of three types of symbol components, the length of the first type of symbol components is greater than the length of the third type of symbol components;
  • the processing module 1220 is configured to determine a plurality of block signals according to the first information and the second information, each of the block signals includes a plurality of modulation symbols; for each block in the plurality of block signals The signal is processed to obtain an OFDM symbol corresponding to the block signal;
  • the first block signal includes the first type symbol component and the second type symbol component
  • the second block signal includes the first type symbol component and the second type symbol component in the first block signal The same modulation symbol as the second type symbol component
  • the k+1th block signal includes the same modulation symbol as the second type symbol component and the third type symbol component in the kth block signal, k ⁇ 2, k is an integer
  • the transceiver module 1210 is configured to send the OFDM symbol.
  • the first type symbol components are the first X modulation symbols in the first block signal;
  • the starting modulation symbol of the modulation symbol with the same first type symbol component is m-1 modulation symbols different from the last modulation symbol of the second block signal, where the value of m is based on the duration of the cyclic prefix Hence, m>1, X>1;
  • the second type symbol component in the k-1th block signal is the last Y modulation symbol in the k-1th block signal, and in the k-th block signal, it is the same as the k-1th There is a difference of m modulation symbols between the end modulation symbol of the modulation symbol with the same second type symbol component in the block signal and the last modulation symbol of the kth block signal, Y ⁇ 1;
  • the third type symbol component in the kth block signal is the first Z modulation symbols in the kth block signal, Z ⁇ X, Z ⁇ 1, in the k+1th block signal,
  • the first modulation symbol of the modulation symbol that is the same as the third type symbol component in the kth block signal is m-1 modulation symbols different from the last modulation symbol of the k+1th symbol.
  • the length of the third type symbol component is a first preset value
  • the second information indicates the sum of the length of the second type symbol component and the length of the cyclic prefix.
  • the first information indicates a difference between the length of the first type of symbol component and the length of the third type of symbol component.
  • the processing module 1220 is configured to, when determining multiple block signals according to the first information and the second information, determine the transmission block according to the first information and the second information Size, according to the size of the transmission block, determine multiple block signals corresponding to the third information, where the third information is information that the terminal device needs to send to the network device.
  • the processing module 1220 is configured to, when determining the transport block size according to the first information and the second information, determine the second The number of modulation symbols included in one type of symbol component, and the number of modulation symbols included in the second type of symbol component is determined according to the length of the second type of symbol component, and the number of modulation symbols included in the third type of symbol component is determined according to the length of the third type of symbol component
  • the number of modulation symbols included in the three types of symbol components determined according to the number of modulation symbols included in the first type of symbol components, the number of modulation symbols included in the second type of symbol components, and the number of modulation symbols included in the third type of symbol components
  • the first number of resource units, the first number of resource units indicates the number of resource units corresponding to the same modulation symbol between different block signals in a time slot; the transmission is determined according to the second number of resource units and the first number of resource units
  • the size of the block, the second number of resource units is the number of resource units used to transmit the third information in one time slot.
  • the processing module 1220 is configured to, when determining the size of the transport block according to the second number of resource units and the first number of resource units, according to the second number of resource units and the first number of resource units
  • the size of the transport block is determined by a difference between the number of resource units; or, the size of the transport block is determined according to a difference between the second number of resource units and a first quantization value, and the first quantization value is the first
  • the number of resource units is obtained after being quantized according to a preset interval.
  • the unit of the length of the first type symbol component is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the second type symbol component The unit of length is the number of samples after IFFT, or the absolute time unit, or the number of samples after IFFT under the specified number of FFT points;
  • the unit of the length of the third type symbol component is the number of samples after IFFT, or the absolute time unit , or the number of samples after IFFT under the specified number of FFT points.
  • the apparatus 1200 may correspond to the terminal device in the foregoing method embodiments, and the operations and/or functions of each module in the apparatus 1200 are to implement corresponding steps of the method of the terminal device in the foregoing method embodiments , so the beneficial effects of the foregoing method embodiments can also be achieved, and for the sake of brevity, details are not described here.
  • the processing module 1220 in the apparatus 1200 may support the apparatus 1200 to execute the actions of the network device in the above method examples.
  • the supporting device 1200 may execute step 540 and step 550 in FIG. 5 .
  • the transceiver module 1210 may support communication between the apparatus 1200 and the terminal device, for example, the transceiver module 1210 may support the apparatus 1200 to execute step 500 and step 530 in FIG. 5 .
  • the device 1200 includes:
  • the transceiver module 1210 is configured to send first information and second information to the terminal device, the first information is used to determine the length of the first type of symbol component, and the second information is used to determine the length of the second type of symbol component at least one of a length and a length of a third type of symbol component, the length of the first type of symbol component being greater than the length of the third type of symbol component;
  • the transceiver module 1210 is configured to receive a plurality of OFDM symbols from a terminal device, and the plurality of OFDM symbols correspond to a plurality of block signals one by one, wherein each block signal includes a plurality of modulation symbols, and the first A block signal includes the first type symbol component and the second type symbol component; the second block signal includes the first type symbol component and the second type symbol component in the first block signal The same modulation symbol; the k+1th block signal includes the same modulation symbol as the second type symbol component and the third type symbol component in the kth block signal, k ⁇ 2, k is an integer;
  • the processing module 1220 is configured to determine a receiving window corresponding to each OFDM symbol in the plurality of OFDM symbols; and obtain a demodulated signal of each OFDM symbol according to the receiving window corresponding to each OFDM symbol.
  • the first type symbol components are the first X modulation symbols in the first block signal;
  • the starting modulation symbol of the modulation symbol with the same first type symbol component is m-1 modulation symbols different from the last modulation symbol of the second block signal, where the value of m is based on the duration of the cyclic prefix Hence, m>1, X>1;
  • the second type symbol component in the k-1th block signal is the last Y modulation symbol in the k-1th block signal, and in the k-th block signal, it is the same as the k-1th There is a difference of m modulation symbols between the end modulation symbol of the modulation symbol with the same second type symbol component in the block signal and the last modulation symbol of the kth block signal, Y ⁇ 1;
  • the third type symbol component in the kth block signal is the first Z modulation symbols in the kth block signal, Z ⁇ X, Z ⁇ 1, in the k+1th block signal,
  • the first modulation symbol of the modulation symbol that is the same as the third type symbol component in the kth block signal is m-1 modulation symbols different from the last modulation symbol of the k+1th symbol.
  • the processing module 1220 is configured to determine the multiple OFDM symbols according to the length of the first type symbol component when determining the receiving window corresponding to each OFDM symbol in the multiple OFDM symbols.
  • the receiving window corresponding to the first OFDM symbol in the first OFDM symbol, the starting point of the receiving window corresponding to the first OFDM symbol is associated with the length of the first type symbol component; determined according to the duration of the cyclic prefix Receive window corresponding to the kth symbol.
  • the interval between the end point of the receiving window corresponding to the first OFDM symbol and the starting point of the receiving window corresponding to the second OFDM symbol is T1 sampling points
  • the end of the receiving window corresponding to the kth OFDM symbol is T2 sampling points
  • T1 ⁇ T2 the interval between the point and the starting point of the receiving window corresponding to the k+1th OFDM symbol
  • the processing module 1220 is configured to determine the receiving window corresponding to the first OFDM symbol among the plurality of OFDM symbols according to the length of the symbol component of the first type, according to the The length of the first type symbol component determines at least one candidate receiving window; determines the receiving window corresponding to the first OFDM symbol from the at least one candidate receiving window according to preset parameters; wherein, the at least one candidate receiving window
  • the interval between any two adjacent starting points among the starting points is ⁇ T sampling points, ⁇ T is a preset value, and ⁇ T is a positive integer.
  • the processing module 1220 is configured to determine the received signal of the block signal corresponding to each OFDM symbol according to the demodulated signal of each OFDM symbol; according to the first information and the second information Demapping is performed on the received signal of the block signal corresponding to each OFDM symbol; according to the demapped result, received bit information is obtained.
  • the processing module 1220 is configured to, when demapping the received signal of the block signal corresponding to each OFDM symbol according to the first information and the second information, according to the first Demapping is performed on the received signal corresponding to the first type of symbol component and the received signal corresponding to the second type of symbol component in the received signal of the block signal, and the network device corresponds to the received signal of the kth block signal according to The received signal of the third type symbol component is demapped with the received signal corresponding to the second type symbol component; or, according to the received signal of the second block signal corresponding to the first type symbol component in the first block signal The received signal of the received signal and the received signal corresponding to the second type symbol component of the first block signal are demapped, and the network device is based on the received signal of the k+1th block signal corresponding to the kth block signal The received signal of the third type of symbol component and the received signal of the second type of symbol component corresponding to the kth block signal are demapped; or, according to the received signal of the
  • the processing module 1220 is configured to, when demapping the received signal of the block signal corresponding to each symbol according to the first information and the second information, at the kth When the noise power of the received signal of the block signal is lower than the noise power of the received signal of the k+1th block signal, according to the sum of the received signal corresponding to the third type of symbol component in the received signal of the kth block signal Demapping the received signal corresponding to the second type of symbol component;
  • the noise power of the received signal of the kth block signal is higher than the noise power of the received signal of the k+1th block signal, according to the received signal of the k+1th block signal corresponding to the kth block performing demapping on the received signal of the symbol component of the third type in the signal and the received signal of the symbol component of the second type corresponding to the kth block signal.
  • the fifth information further includes an identifier of a frequency band available to the fifth secondary base station in the first frequency band combination, or an identifier of a frequency band selected by the network device in the first frequency band combination. ID of the frequency band.
  • the apparatus 1200 may correspond to the method of the network device in the foregoing method embodiments, and the operations and/or functions of the various modules in the apparatus 1200 are respectively for realizing the method of the network device in the foregoing method embodiments
  • the corresponding steps can therefore also achieve the beneficial effects of the foregoing method embodiments, and for the sake of brevity, details are not described here.
  • Fig. 13 shows a schematic structural diagram of a communication device 1300 according to an embodiment of the present application.
  • the apparatus 1300 includes: a processor 1301 .
  • the apparatus 1300 is a terminal device or a chip in a terminal device, in a possible implementation manner, when the processor 1301 is used to call an interface to perform the following actions:
  • the first information is used to determine the length of the first type of symbol component
  • the second information is used to determine the length of the second type of symbol component and the length of the third type of symbol component At least one, the length of the first type symbol component is greater than the length of the third type symbol component; multiple block signals are determined according to the first information and the second information, and each block signal includes multiple modulating symbols; processing each block signal in the plurality of block signals to obtain an OFDM symbol corresponding to the block signal; sending the OFDM symbol.
  • the first block signal includes the first type symbol component and the second type symbol component
  • the second block signal includes the first type symbol component and the second type symbol component in the first block signal The same modulation symbol as the second type symbol component
  • the k+1th block signal includes the same modulation symbol as the second type symbol component and the third type symbol component in the kth block signal, k ⁇ 2, k is an integer.
  • apparatus 1300 may also be used to perform other steps and/or operations on the terminal device side in the foregoing embodiments, and details are not described here for brevity.
  • the apparatus 1300 is a network device or a chip in a network device, in a possible implementation manner, when the processor 1301 is used to call an interface to perform the following actions:
  • each of the block signals includes a plurality of modulation symbols
  • the first block signal includes the first type symbol component and the second type symbol component
  • the second block signal includes the same as the first
  • the modulation symbols of the first type symbol component and the second type symbol component in the block signal are the same
  • the k+1th block signal includes the same modulation symbols as the second type symbol component and the third type symbol component in the kth block signal Modulation symbols with the same type symbol component, k ⁇ 2, k is an integer
  • apparatus 1300 may also be used to perform other steps and/or operations on the network device side in the foregoing embodiments, and details are not described here for brevity.
  • the processor 1301 may call an interface to perform the above sending and receiving actions, where the called interface may be a logical interface or a physical interface, which is not limited.
  • the physical interface can be implemented through a transceiver.
  • the apparatus 1300 further includes a transceiver 1303 .
  • the apparatus 1300 further includes a memory 1302, and the memory 1302 may store the program codes in the foregoing method embodiments, so as to be called by the processor 1301.
  • the apparatus 1300 includes a processor 1301, a memory 1302, and a transceiver 1303, the processor 1301, the memory 1302, and the transceiver 1303 communicate with each other through an internal connection path to transmit control and/or data signals.
  • the processor 1301, the memory 1302, and the transceiver 1303 may be implemented by a chip, and the processor 1301, the memory 1302, and the transceiver 1303 may be implemented in the same chip, or may be respectively implemented in different chips, Or a combination of any two of these functions can be implemented in one chip.
  • the memory 1302 may store program codes, and the processor 1301 calls the program codes stored in the memory 1302 to implement corresponding functions of the apparatus 1300 .
  • a processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other available Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, system on chip (system on chip, SoC), central processor unit (central processor unit, CPU), or network processor (network processor, NP), can also be a digital signal processing circuit (digital signal processor, DSP), can also be a microcontroller (micro controller unit, MCU), can also be a programmable controller (programmable logic device, PLD) or other Integrated chip.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • FPGA field programmable gate array
  • Programmable logic devices discrete gate or transistor logic devices, discrete hardware components, system on chip (system on chip, SoC), central processor unit
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM direct memory bus random access memory
  • direct rambus RAM direct rambus RAM
  • the embodiments of the present application also provide a computer-readable storage medium, in which computer program codes are stored.
  • computer program codes When the computer program codes are executed, the methods in the foregoing method embodiments are executed.
  • the embodiment of the present application also provides a computer program product, which, when the computer program product is run on a computer, causes the computer to execute the methods in the foregoing method embodiments.
  • the embodiment of the present application also provides a communication device, which can exist in the product form of a chip.
  • the structure of the device includes a processor and an interface circuit.
  • the processor is used to communicate with other devices through a receiving circuit, so that the device performs the aforementioned
  • the method embodiment is a method performed by a terminal device or a network device.
  • the embodiment of the present application also provides a wireless communication system, including a terminal device and a network device, and the terminal device and the network device can execute the methods in the foregoing method embodiments.
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic.
  • the various numerical numbers or serial numbers involved in the above-mentioned various processes are only for convenience of description, and shall not constitute any limitation to the implementation process of the embodiment of the present application.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory ROM, random access memory RAM, magnetic disk or optical disk, and other media capable of storing program codes.

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Abstract

一种通信方法及装置，该方法包括：终端设备获取第一信息和第二信息，第一信息用于确定第一类型符号分量的长度，第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，第一类型符号分量的长度大于第三类型符号分量的长度。终端设备根据第一信息和第二信息确定多个块信号，并对多个块信号中的每个块信号进行处理，得到与块信号对应的OFDM符号。终端设备发送OFDM符号。采用上述方法可以实现第1个OFDM符号对应的FFT接收窗相较于常规的FFT接收窗向后延迟，降低第1个OFDM符号上的符号间干扰。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2021年09月07日提交中国专利局、申请号为202111044235.7、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及无线通信领域，尤其涉及一种通信方法及装置。
背景技术
为了抵抗信道的多径效应，在符号间添加保护间隔的技术被提出。其中，保护间隔可以通过如下方式来抵抗多径效应：
其一，保护间隔可以去除相邻接收符号间的符号间干扰(inter symbol interference,ISI)；
其二，在经过多径信道后，保护间隔将信道与符号的线性卷积转换为信道与符号的循环卷积。当接收信号被转换为符号与多径信道的循环卷积后，符号接收端可以采用频域均衡方法消除多径效应。
保护间隔可以为零保护间隔(zero padding,ZP)、或者循环前缀(cyclic prefix，CP)或者循环后缀(cyclic suffix，CS)。通常，循环前缀(cyclic prefix，CP)被用作符号间的保护间隔。现有的CP配置方法可以实现抵抗一部分多径效应的影响，但是实际环境中可能存在与第一条径的时延差超过CP长度的径(以下简称径P)。可以理解为，对于相同的发送信号，经历第一条径到达接收端的时刻与经历径P到达接收端的时刻相差超过CP的持续时间，其中，该发送信号经历第一条径到达接收端的时刻早于该发送信号经历其他径到达接收端的时刻。
其中，径P对应的接收信号不能完整落入常规的快速傅里叶变换(fast Fourier transform，FFT)接收窗，即会丢掉一部分经历径P到达接收端的信号，同时第1个OFDM符号的常规的FFT接收窗内还会接收到上一个时隙经历径P到达接收端的信号。随着径P与第一条径的时延差越长，丢掉的经历径P到达信号越多，同时接收到的经历径P到达的上一个时隙的干扰也越多。当丢掉的信号和受到的干扰足够大时，将会影响第1个OFDM符号的性能。
发明内容
本申请实施例提供一种通信方法及装置，用以实现在径P与第一条径的时延差超过CP长度时，保障第1个OFDM符号的性能。
第一方面，本申请提供一种通信方法，该方法包括：终端设备获取第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；所述终端设备根据所述第一信息和所述第二信息确定多个块信号，每个所述块信号包括多个调制符号，对所述多个块信号中的每个块信号进行处 理，得到与所述块信号对应的OFDM符号，并发送所述OFDM符号。其中，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数。
采用上述方法可以实现第1个OFDM符号对应的FFT接收窗相较于常规的FFT接收窗向后延迟，使得经历径P达到的第1个OFDM符号的信号可以完整落入第个FFT接收窗内，降低第1个OFDM符号上的符号间干扰，当第1个OFDM符号是DMRS符号时，保障了基于DMRS估计的信道的估计精度，进而保证了解调性能。
在一种可能的设计中，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
在一种可能的设计中，所述第三类型符号分量的长度为第一预设值；所述第二信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
采用上述设计，可以通过复用已有的字段或增加新的字段来承载或指示第二信息，进而可以实现指示多种第二类型符号分量的长度。
在一种可能的设计中，所述第一信息指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
采用上述设计，通过指示第一类型符号分量的长度与第三类型符号分量的长度的差值或第一类型符号分量的长度索引与第三类型符号分量的长度索引的差值，可以实现对第一类型符号分量的配置，方法简便。
在一种可能的设计中，在所述终端设备根据所述第一信息和所述第二信息确定多个块信号时，所述终端设备根据所述第一信息和第二信息确定传输块的大小，所述终端设备根据所述传输块的大小确定第三信息对应的多个块信号，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
在一种可能的设计中，在所述终端设备根据所述第一信息和所述第二信息确定传输块的大小时，所述终端设备根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数。所述终端设备根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数。所述终端设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所 述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
采用上述设计，在重新确定的传输块大小时，考虑为块间复制预留的资源，进而可以实现实际码率和配置码率的差异在一定的范围，保证解调性能。
在一种可能的设计中，所述终端设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小可以采用但不限于以下方式：所述终端设备根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；或者，所述终端设备根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
采用上述设计，在计算传输块的大小时考虑为块间复制预留的资源，进而可以实现保证解调性能。
在一种可能的设计中，所述第一类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第二类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第三类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数。
第二方面，本申请提供一种通信方法，该方法包括：网络设备向终端设备发送第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度。所述网络设备从终端设备接收多个OFDM符号，确定所述多个OFDM符号中的每个OFDM符号对应的接收窗，并根据每个OFDM符号对应的接收窗获取每个OFDM符号的解调信号。所述多个OFDM符号与多个块信号一一对应，其中，每个所述块信号包括多个调制符号，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数。
采用上述方法可以实现第1个OFDM符号对应的FFT接收窗相较于常规的FFT接收窗向后延迟，使得经历径P达到的第1个OFDM符号的信号均可以完整落入第个FFT接收窗内，降低第1个OFDM符号上的符号间干扰，当第1个OFDM符号是DMRS符号时，保障了基于DMRS估计的信道的估计精度，进而保证了解调性能。
在一种可能的设计中，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
在一种可能的设计中，在网络设备确定所述多个OFDM符号中的每个OFDM符号对 应的接收窗时，所述网络设备根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗，所述第1个OFDM符号对应的接收窗的起始点与所述第一类型符号分量的长度关联，所述网络设备根据所述循环前缀的持续时间确定第k个OFDM符号对应的接收窗。其中，所述第1个OFDM符号对应的接收窗的结束点与第2个OFDM符号对应的接收窗的起始点的间隔为T1个采样点，所述第k个OFDM符号对应的接收窗的结束点与所述第k+1个OFDM符号对应的接收窗的起始点的间隔为T2个采样点，T1<T2，T1和T2为正整数。
采用上述设计，根据第一类型符号分量的长度延迟第1个OFDM符号对应的接收窗，而其他OFDM符号的接收窗的确定方式不变，可以降低第1个OFDM符号上的符号间干扰，方案简便容易实现。
在一种可能的设计中，在所述网络设备根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗时，所述网络设备根据所述第一类型符号分量的长度确定至少一个候选接收窗，所述网络设备根据预设参数从所述至少一个候选接收窗中确定所述第1个OFDM符号对应的接收窗。其中，所述至少一个候选接收窗的起始点中的任意两个相邻的起始点的间隔为△T个采样点，△T为预设值，△T为正整数。
采用上述设计可以从多个候选接收窗中选择性能较好的接收窗作为第1个OFDM符号对应的接收窗。
在一种可能的设计中，所述网络设备根据每个OFDM符号的解调信号确定每个OFDM符号对应的块信号的接收信号，所述网络设备根据所述第一信息和所述第二信息对每个OFDM符号对应的块信号的接收信号进行解映射，所述网络设备根据解映射后的结果，获得接收比特信息。
在一种可能的设计中，所述网络设备根据所述第一信息和所述第二信息对每个OFDM符号对应的块信号的接收信号进行解映射可以采用但不限于以下方式：
方式1：所述网络设备根据第1个块信号的接收信号中对应所述第一类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射，所述网络设备根据第k个块信号的接收信号中对应所述第三类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射；
方式2：所述网络设备根据第2个块信号的接收信号中对应第1个块信号中所述第一类型符号分量的接收信号，以及对应第1个块信号的所述第二类型符号分量的接收信号进行解映射，所述网络设备根据第k+1个块信号的接收信号中对应第k个块信号中所述第三类型符号分量的接收信号，以及对应第k个块信号的所述第二类型符号分量的接收信号进行解映射；
采用上述方式1和方式2仅需要解调一次相同的信息内容对应的调制符号的接收信号，不需要解调两次，进而可以提升解调效率。
方式3：所述网络设备根据第1个块信号的接收信号中对应所述第一类型符号分量的接收信号与第2个块信号的接收信号中对应第1个块信号中所述第一类型符号分量的接收信号的平均值，以及所述第1个块信号的接收信号中对应所述第二类型符号分量的接收信号和所述第2个块信号的接收信号中对应所述第1个块信号的所述第二类型符号分量的接收信号的平均值进行解映射，以及第k个块信号的接收信号中对应所述第三类型符号分量的接收信号与第k+1个块信号的接收信号中对应所述第k个块信号中第三类型符号分量的 接收信号的平均值，以及所述第k个块信号的接收信号中对应所述第二类型符号分量的接收信号和所述第k+1个块信号的接收信号中对应所述第k个块信号中第二类型符号分量的接收信号的平均值进行解映射。
采用上述方式3结合两部分对应相同的信息内容的调制符号的接收信号进行解调，可以提升解调的成功率。
方式4：在所述网络设备确定所述第k个块信号的接收信号的噪声功率低于所述第k+1个块信号的接收信号的噪声功率时，所述网络设备根据第k个块信号的接收信号中对应所述第三类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射；在所述网络设备确定所述第k个块信号的接收信号的噪声功率高于所述第k+1个块信号的接收信号的噪声功率时，所述网络设备根据第k+1个块信号的接收信号中对应第k个块信号中所述第三类型符号分量的接收信号，以及对应第k个块信号的所述第二类型符号分量的接收信号进行解映射。
采用上述方式4选择噪声功率较低的那部分调制符号的接收信号进行解调，可以提升解调的成功率。
在一种可能的设计中，所述网络设备根据所述第一信息和第二信息确定传输块的大小，所述网络设备根据所述传输块的大小译码所述接收比特信息，获得第三信息，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
在一种可能的设计中，在所述网络设备根据所述第一信息和所述第二信息确定传输块的大小时，所述网络设备根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数；所述网络设备根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数；所述网络设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
采用上述设计，在重新确定的传输块大小时，考虑为块间复制预留的资源，进而可以实现实际码率和配置码率的差异在一定的范围，保证解调性能。
在一种可能的设计中，在所述网络设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小时，所述网络设备根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；或者，所述网络设备根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
采用上述设计在计算传输块的大小时考虑为块间复制预留的资源，进而可以保证解调性能。
在一种可能的设计中，所述第三类型符号分量的长度为第一预设值；所述第一信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
采用上述设计，可以通过复用已有的字段或增加新的字段来承载或指示第二信息，进而可以实现指示多种第二类型符号分量的长度。
在一种可能的设计中，所述第一信息还指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
采用上述设计，通过指示第一类型符号分量的长度与第三类型符号分量的长度的差值或第一类型符号分量的长度索引与第三类型符号分量的长度索引的差值，可以实现对第一类型符号分量的配置，方法简便。
在一种可能的设计中，所述第一类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第二类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第三类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数。
第三方面，本申请提供一种通信装置，所述装置为终端设备或用于实现终端设备的功能的模块，所述装置包括收发模块和处理模块；
所述收发模块，用于获取第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；所述处理模块，用于根据所述第一信息和所述第二信息确定多个块信号，每个所述块信号包括多个调制符号，对所述多个块信号中的每个块信号进行处理，得到与所述块信号对应的正交频分复用OFDM符号；所述收发模块，用于发送所述OFDM符号。其中，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；
在一种可能的设计中，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
在一种可能的设计中，所述第三类型符号分量的长度为第一预设值；所述第二信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
在一种可能的设计中，所述第一信息指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
在一种可能的设计中，所述处理模块，用于在根据所述第一信息和所述第二信息确定多个块信号时，根据所述第一信息和第二信息确定传输块的大小；根据所述传输块的大小确定第三信息对应的多个块信号，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
在一种可能的设计中，所述处理模块，用于在根据所述第一信息和所述第二信息确定传输块的大小时，根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调 制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数；根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数；根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
在一种可能的设计中，所述处理模块，用于在根据第二资源单元数和所述第一资源单元数确定所述传输块的大小时，根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；或者，根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
在一种可能的设计中，所述第一类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第二类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第三类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数。
第四方面，本申请提供一种通信装置，所述装置为网络设备或用于实现网络设备的功能的装置，该装置包括收发模块和处理模块；
所述收发模块，用于向终端设备发送第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；所述收发模块，用于从终端设备接收多个OFDM符号，所述多个OFDM符号与多个块信号一一对应，其中，每个所述块信号包括多个调制符号，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；所述处理模块，用于确定所述多个OFDM符号中的每个OFDM符号对应的接收窗，根据每个OFDM符号对应的接收窗获取每个OFDM符号的解调信号。
在一种可能的设计中，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
在一种可能的设计中，所述处理模块，用于在确定所述多个OFDM符号中的每个OFDM符号对应的接收窗时，根据所述第一类型符号分量的长度确定所述多个OFDM符 号中的第1个OFDM符号对应的接收窗，所述第1个OFDM符号对应的接收窗的起始点与所述第一类型符号分量的长度关联；根据所述循环前缀的持续时间确定第k个OFDM符号对应的接收窗；其中，所述第1个OFDM符号对应的接收窗的结束点与第2个OFDM符号对应的接收窗的起始点的间隔为T1个采样点，所述第k个OFDM符号对应的接收窗的结束点与所述第k+1个OFDM符号对应的接收窗的起始点的间隔为T2个采样点，T1<T2，T1和T2为正整数。
在一种可能的设计中，所述处理模块，用于在根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗时，根据所述第一类型符号分量的长度确定至少一个候选接收窗，根据预设参数从所述至少一个候选接收窗中确定所述第1个OFDM符号对应的接收窗；其中，所述至少一个候选接收窗的起始点中的任意两个相邻起始点的间隔为△T个采样点，△T为预设值且为正整数。
在一种可能的设计中，所述处理模块，还用于根据每个OFDM符号的解调信号确定每个OFDM符号对应的块信号的接收信号，根据所述第一信息和所述第二信息对OFDM符号对应的块信号的接收信号进行解映射，根据解映射后的结果，获得接收比特信息。
在一种可能的设计中，所述处理模块根据所述第一信息和所述第二信息对每个OFDM符号对应的块信号的接收信号进行解映射可以采用但不限于以下方式：
方式1：所述处理模块根据第1个块信号的接收信号中对应所述第一类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射，所述处理模块根据第k个块信号的接收信号中对应所述第三类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射；
方式2：所述处理模块根据第2个块信号的接收信号中对应第1个块信号中所述第一类型符号分量的接收信号，以及对应第1个块信号的所述第二类型符号分量的接收信号进行解映射，所述处理模块根据第k+1个块信号的接收信号中对应第k个块信号中所述第三类型符号分量的接收信号，以及对应第k个块信号的所述第二类型符号分量的接收信号进行解映射；
方式3：所述处理模块根据第1个块信号的接收信号中对应所述第一类型符号分量的接收信号与第2个块信号的接收信号中对应第1个块信号中所述第一类型符号分量的接收信号的平均值，以及所述第1个块信号的接收信号中对应所述第二类型符号分量的接收信号和所述第2个块信号的接收信号中对应所述第1个块信号的所述第二类型符号分量的接收信号的平均值进行解映射，以及第k个块信号的接收信号中对应所述第三类型符号分量的接收信号与第k+1个块信号的接收信号中对应所述第k个块信号中第三类型符号分量的接收信号的平均值，以及所述第k个块信号的接收信号中对应所述第二类型符号分量的接收信号和所述第k+1个块信号的接收信号中对应所述第k个块信号中第二类型符号分量的接收信号的平均值进行解映射。
方式4：在所述处理模块确定所述第k个块信号的接收信号的噪声功率低于所述第k+1个块信号的接收信号的噪声功率时，所述处理模块根据第k个块信号的接收信号中对应所述第三类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射；在所述处理模块确定所述第k个块信号的接收信号的噪声功率高于所述第k+1个块信号的接收信号的噪声功率时，所述处理模块根据第k+1个块信号的接收信号中对应第k个块信号中所述第三类型符号分量的接收信号，以及对应第k个块信号的所述第二类型符号分量的 接收信号进行解映射。
在一种可能的设计中，所述处理模块，还用于根据所述第一信息和第二信息确定传输块的大小；根据所述传输块的大小译码所述接收比特信息，获得第三信息，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
在一种可能的设计中，所述处理模块，用于在根据所述第一信息和所述第二信息确定传输块的大小时，根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数，根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数，根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
在一种可能的设计中，所述处理模块，用于在根据第二资源单元数和所述第一资源单元数确定所述传输块的大小时，根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；或者，根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
在一种可能的设计中，所述第三类型符号分量的长度为第一预设值；所述第一信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
在一种可能的设计中，所述第一信息还指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
在一种可能的设计中，所述第一类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第二类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第三类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数。
上述第三方面至第四方面中任一种可能设计可以达到的技术效果，可以参照上述第一方面和第二方面中相应的可能设计可以带来的技术效果描述，重复之处不予赘述。
第五方面，本申请还提供一种装置。该装置可以执行上述方法设计。该装置可以是能够执行上述方法对应的功能的芯片或电路，或者是包括该芯片或电路的设备。
在一种可能的实现方式中，该装置包括：存储器，用于存储计算机可执行程序代码；以及处理器，处理器与存储器耦合。其中存储器所存储的程序代码包括指令，当处理器执行所述指令时，使该装置或者安装有该装置的设备执行上述任意一种可能的设计中的方法。
其中，该装置还可以包括通信接口，该通信接口可以是收发器，或者，如果该装置为芯片或电路，则通信接口可以是该芯片的输入/输出接口，例如输入/输出管脚等。
在一种可能的设计中，该装置包括相应的功能单元，分别用于实现以上方法中的步骤。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元。
第六方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，当所述计算机程序在装置上运行时，执行上述任意一种可能的设计中的方法。
第七方面，本申请提供一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在装置上运行时，执行上述任意一种可能的设计中的方法。
第八方面，本申请提供一种通信系统，所述系统包括终端设备和网络设备，其中，终端设备用于实现第一方面中的任意一种可能的设计，网络设备用于实现第一方面中的任意一种可能的设计。
附图说明
图1为本申请中第一条径和径P的示意图；
图2A为本申请的实施例应用的移动通信系统的架构示意图；
图2B本申请的实施例中的通信系统基带功能模块的示意图；
图3为本申请的实施例中功放的功耗与线性度指标的示意图；
图4A为本申请的实施例中CP-DFT-s-OFDM的信号生成示意图；
图4B为本申请的实施例中SC-QAM的信号生成示意图；
图5为本申请的实施例中一种通信方法的概述流程图；
图6A为本申请的实施例中NCP与ECP的长度差值的划分示意图A；
图6B为本申请的实施例中NCP与ECP的长度差值的划分示意图B；
图6C为本申请的实施例中NCP与ECP的长度差值的划分示意图C；
图6D为本申请的实施例中NCP与ECP的长度差值的划分示意图D；
图6E为本申请的实施例中NCP与ECP的长度差值的划分示意图E；
图7为本申请的实施例中QAM调制模块将调制符号按顺序依次映射至块的示意图；
图8为本申请的实施例中生成块信号的示意图；
图9为本申请的实施例中OFDM符号添加CP后的时域符号示意图；
图10为本申请的实施例中OFDM符号的接收窗的示意图之一；
图11为本申请的实施例中OFDM符号的接收窗的示意图之二；
图12为本申请的实施例中一种装置的结构示意图之一；
图13为本申请的实施例中一种装置的结构示意图之二。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。本申请的说明书和权利要求书及上述附图中的术语“第一”、第二”以及相应术语标号等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，这仅仅是描述本申请的实施例中对相同属性的对象在描述时所采用的区分方式。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，以便包含一系列单元的过程、方法、系统、产品或设备不必限于那些单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它单元。
在本申请的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，在 本申请的描述中，“至少一项”是指一项或者多项，“多项”是指两项或两项以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。本申请中，除特殊说明外，各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法中的技术特征根据其内在的逻辑关系可以组合形成新的实施例、实施方式、实施方法、或实现方法。以下所述的本申请实施方式并不构成对本申请保护范围的限定。
参阅图2A所示，本申请可以适用但不限于以下场景：多站点传输(同一个用户设备(User Equipment,UE)同时与多个传输点间传输信号)、回传、无线宽带到户(wireless to the x，WTTx)、增强移动宽带(enhanced mobile broadband，eMBB)、设备到设备(device to device，D2D)等场景。
本申请涉及的网元可以包括但不限于终端设备和网络设备。
其中，网络设备可以是能和终端设备通信的设备。网络设备可以是基站、中继站或接入点。其中，基站可以是全球移动通信系统(global system for mobile communication，GSM)或码分多址(code division multiple access，CDMA)网络中的基站收发信台(base transceiver Station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的基站(NodeB，NB)，还可以是LTE中的基站(evolutional NodeB，eNB)。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器。网络设备还可以是5G网络或下一代网络(例如6G)中的基站设备或者未来演进的共用陆地移动网(public land mobile network,PLMN)网络中的网络设备。网络设备还可以是可穿戴设备或车载设备。
终端设备可以是UE、接入终端、终端单元、终端站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、终端代理或终端装置等。其中，接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络或下一代网络(例如6G)中的终端设备或者未来演进的PLMN网络中的终端设备等。
本申请实施例提供的技术方案可以应用于各种通信系统。例如：可以适用于长期演进(long term evolution，LTE)系统或5G系统，也可以适用于其它面向未来的新系统等，例如6G系统、可编程用户面系统，本申请实施例对此不作具体限定。此外，术语“系统”可以和“网络”相互替换。
本申请所使用的通信系统基带功能模块可以如图2B所示。
其中，发射端主要包括但不限于以下模块：
信源比特生成模块：用于根据传输块大小生成原始信源比特，原始信源比特承载需要发送的信息；
编码模块：用于对原始信源比特添加冗余码、校验码等；
正交幅度调制(quadrature amplitude modulation,QAM)调制模块：用于将编码后的比特按调制阶数映射成调制符号；
映射/排列模块：用于将一个时隙内的所有调制符号按映射规则或排列规则分为多个块信号，或者称之为串并转换；
离散傅里叶变换(Discrete Fourier Transformation,DFT)模块：用于以块信号为单位将多个块信号转换至能映射至频域子载波的信号；
资源单元(resource element,RE)映射模块：用于将能映射至频域子载波的信号映射到子载波；
逆快速傅里叶变换(Inverse Fast Fourier Transformation,IFFT)模块：用于将映射至子载波的信号以OFDM符号为单位转换至时域以采样点为单位的信号。
加CP模块：用于以OFDM符号为单位，复制OFDM符号l的尾部X l个信号，并添加至该OFDM符号l的头部；然后将相邻OFDM符号的首尾相连，按时间顺序依次发送出去。其中，X l是预定义或预配置的CP长度确定。
接收端包括但不限于以下模块：
去CP和FFT模块：用于将接收到的信号根据FFT接收窗的位置去掉CP，串并转换为多个OFDM符号，并将多个OFDM符号转换至频域，得到OFDM解调信号；
信道均衡模块：用于基于频域的解调参考信号(demodulation reference signal,DMRS)接收信号完成信道估计，并基于该信道估计结果完成频域的接收信号的信道均衡；
RE解映射模块：用于从指定的子载波位置取出信号，以块为单位排列；
逆离散傅里叶变换(Inverse Discrete Fourier Transformation,IDFT)模块：用于将以块为单位的信号转换至时域以QAM调制符号为单位的信号，得到块信号的接收信号；其中，以QAM调制符号为单位是指：块信号中的每个信号是一个QAM调制信号。但由于接收端有噪声的影响等，块信号的接收信号中的每个信号不是标准的QAM调制信号。
解块映射模块：用于对块信号的接收信号进行并串转换；
QAM解调模块：用于将并串转换之后的调制符号解调为接收比特信息；
译码模块：用于根据校验码冗余码等完成接收比特信息的译码。
此外，发送端还可以包括数字模拟转换器(digital-to-analog-converter，DAC)，功率放大器(power amplifier,PA)、混频器等。接收端还可以包括模拟数字转换器(analog-to-digital converter,ADC)，低噪放(low noise amplifier,LNA)、混频器等。可以理解的是，发送端和接收端还可以包括其他模块，本申请对此不作限定。
以下对本申请实施例涉及的技术概念进行简要说明：
1.离散傅里叶变换扩展的正交频分复用(discrete fourier transformation-spread-OFDM,DFT-s-OFDM)
在新空口(new radio,NR)系统中，上行传输支持循环前缀正交频分复用(cyclic prefix-orthogonal frequency division multiplexing，CP-OFDM)波形和DFT-s-OFDM波形。其中，DFT-s-OFDM继承于长期演进(long term evolution,LTE)系统，DFT-s-OFDM又称之为单载波波形，DFT-s-OFDM相比CP-OFDM具有峰均功率比(peak-to-average power ratio，PAPR)低的特点，其调制好的数据排列完成后，在映射至频域子载波前需先做DFT，即：
Figure PCTCN2022116602-appb-000001
其中，y(k)为待映射在子载波上的信号，N为调度带宽内的子载波个数，x(i)为调制符号，调制方法包括正交幅度调制(quadrature amplitude modulation,QAM)调制、正交相移键控(quadrature phase shift keying，QPSK)调制，π/2相移的二相移项键控(π/2 shifted binary phase shift keying，π/2-BPSK)调制，幅度相移键控(amplitude phase shift keying,APSK)调制，非均匀QAM调制等。
进一步地，发送端将经离散傅里叶变换后的信号映射到子载波上，然后经IFFT和加CP后发出。接收端在频域完成信号均衡之后，会对同一个OFDM符号上调度带宽内的子载波上的N个接收信号做一个IDFT的操作，进而得到QAM调制信号对应的接收信号，并基于此完成译码得到发送端发送的信息。
由于DFT-s-OFDM等单载波波形具有较低的PAPR，因此，在各类通信系统(例如LTE系统，NR系统)中被广泛应用。其中，在相同的功放下，较低的PAPR的波形可以提供更大的输出功率和更高的功放效率，从而达到提升覆盖和降低能耗的目的。而较低的PAPR波形带来的覆盖和功耗优势在终端设备侧尤为明显，进而，在LTE系统和NR系统的现有版本中，单载波波形均应用于上行传输。
在更高频段(例如NR后续演进所支持的52.6GHz以上频段)，功放的功耗与线性度指标x更差或线性工作区更小。例如，如图3所示，在越高的频段，线性工作区越小，P1dB对应的输入功率越低，其中，P1dB是指理论增益曲线与实际增益曲线相差1dB的工作点。因此，低PAPR特性将尤为重要，DFT-s-OFDM波形等单载波波形可能得到更广泛的应用。例如，52.6GHz以上频段的NR标准可能在下行引入DFT-s-OFDM波形或单载波正交幅度调制(single carrier-quadrature amplitude modulation,SC-QAM)波形。
2.多径
多径是指无线电信号从发射天线经过多个路径抵达接收天线的传播现象。
3.高频
高频是指6GHz以上频段，主要包括28GHz、39GHz、60GHz、73GHz等，因其丰富的频谱资源成为业界用于解决日益增长的通信需求而研究和开发的热点。特别是52.6～71GHz这段频谱，其显著特点为大带宽，为了充分利用这段频谱资源，提高峰值速率或吞吐，业界提出将单个载波所占用的带宽从现在NR的400MHz增加至约2GHz或更高，同时由于终端设备的硬件等的限制，以及对数据解调时延越来越高的要求，限制了最大的FFT点数和最大资源块数，其中，FFT点数越高，实现FFT的复杂度越高。示例性地，现在支持的最大FFT点数为4096，最大资源块数为275，在这个限制下，子载波间隔分别为120kHz，240kHz，480kHz，960kHz所支持的带宽分别为400MHz、800MHz、1600MHz、3200MHz。因此，为了在有限FFT点数下，尽量增加带宽，大子载波间隔如960kHz甚至1920kHz的研究被提出。
4.CP
CP是指将OFDM符号尾部的信号复制到头部构成的。现有协议中，CP的长度主要有两种，分别为常规循环前缀(normal cyclic prefix，NCP)和扩展循环前缀(extended cyclic prefix，ECP)。其中，NCP的持续时间小于ECP的持续时间，NCP在一个时隙内的开销也小于ECP在一个时隙内的开销。下文如无特殊说明循环前缀是指常规循环前缀，常规循环前缀用NCP表示。由于ECP的持续时间更长，因此可以抵抗时延更长的信道，同时其开销较大，具体的，CP持续时间与子载波映射中的子载波间隔(subcarrier spacing,SCS)有关。 SCS越大，CP持续时间越短，能抵抗的多径时延越短。
各个SCS有关对应的NCP和ECP的时间长度分别如下表1所示：
表1 不同SCS对应的NCP和ECP持续时间
SCS 120kHz 240kHz 480kHz 960kHz 1920kHz 3840kHz
NCP ～586ns ～293ns ～146ns ～73ns ～37ns ～18ns
ECP ～2083ns ～1042ns ～521ns ～260ns ～130ns ～65ns
其中“～”表示约等于，根据公式取四舍五入得到，如：round(x)即对x取四舍五入。NCP的计算公式为：round(144*1e9/(SCS*2048))，单位为纳秒(ns)，SCS的单位为Hz；其中，NCP是指不包括特殊符号的CP长度，特殊符号是指每0.5ms的第一个符号。ECP的计算公式为：round(512*1e9/(SCS*2048))，单位为ns。其中，1e9＝10 9，上述两个公式中的“/”表示除号，“*”表示乘号。
由上表可知，子载波间隔增加，NCP持续时间变短。当SCS增加至960kHz甚至更高时，其对应的CP持续时间较短，较难抵抗长时延的信道，进而影响数据解调性能。ECP虽可以抵抗长时延的信道，但是由于使用ECP的网络设备必须将ECP应用到其服务的所有终端设备上，使得部分不需要ECP的终端设备因ECP的配置引入的开销比较大，降低了这部分终端设备的吞吐，影响网络整体的数据传输速率。
示例性地，针对DFT-s-OFDM，通过在每两个DFT-s-OFDM符号间加入不同的保护间隔可以实现抵抗信道的多径效应。其中，循环前缀被用作符号间的保护间隔。针对不同的保护间隔，可以将DFT-s-OFDM分为常规的循环前缀DFT-s-OFDM(cyclic prefix-DFT-s-OFDM,CP-DFT-s-OFDM)(即在符号头部添加普通循环前缀)，零尾DFT-s-OFDM(zero tail-DFT-s-OFDM,ZT-DFT-s-OFDM)(在符号尾部添加近似零功率的信号)，特殊字DFT-s-OFDM(unique word-DFT-s-OFDM,UW-DFT-s-OFDM)(在符号头部添加特殊字生成的信号)等。
以CP-DFT-s-OFDM举例，CP-DFT-s-OFDM的信号生成示意图如图4A所示。CP-DFT-s-OFDM的信号生成及发射过程如下：源比特编码(对应图2B中的信源比特生成模块和编码模块)，调制(对应图2B中的QAM调制模块)，串并转换(对应图2B中的映射/排列模块)，DFT(对应图2B中的DFT模块)，子载波映射(对应图2B中的RE映射模块)，IFFT，添加CP(复制符号尾部的信号至头部，图4A中示意为复制底部的符号至顶部)，在并串转换后经由天线发送。其中，黑色圈可以理解为子载波映射。
另外，循环前缀SC-QAM(cyclic prefix-SC-QAM,CP-SC-QAM)也可以基于CP生成保护间隔，其信号生成示意图如图4B所示。相比CP-DFT-s-OFDM，CP-SC-QAM的信号生成没有DFT、子载波映射和IFFT的操作/模块，而是多了上采样和滤波器的操作/模块。
需要说明的是，本申请实施例中所涉及的符号或OFDM符号可以是指CP-DFT-s-OFDM符号，或其他符号，本申请实施例对此不作限定，下文仅以CP-DFT-s-OFDM符号为例进行说明，为了描述简便，将CP-DFT-s-OFDM符号简称为OFDM符号。
如图1所示，每个OFDM符号对应的FFT接收窗的长度为一个OFDM符号的长度，每个OFDM符号对应的FFT接收窗的起始位置是根据CP的结束位置确定的。示例性地，第1个OFDM符号对应的FFT接收窗的起始位置为第一条径对应的接收信号中第1个OFDM符号对应的CP的结束位置。第2个OFDM符号对应的FFT接收窗的起始位置为 第一条径对应的接收信号中第2个OFDM符号对应的CP的结束位置。其中，A点为每个OFDM符号中截取循环前缀的位置，例如，从第1个OFDM符号中A点至第1个OFDM符号的结束位置之间的信号被复制到第1个OFDM符号的起始位置之前，作为第1个OFDM符号对应的CP。又例如，从第2个OFDM符号中A点至第2个OFDM符号的结束位置之间的信号被复制到第2个OFDM符号的起始位置之前，作为第2个OFDM符号对应的CP。
当径P与第一条径的时延差超过CP长度时，径P对应的接收信号不能完整落入采用上述方式确定的FFT接收窗内。具体的，针对第1个OFDM符号，经历径P到达接收端的信号会被丢掉一部分(如图1中的粗线方块所示)，其中，粗线方块所示的这部分信号未落入第1个OFDM符号对应的FFT接收窗，且该部分信号位于第1个OFDM符号中的A点之前，即该部分信号未被复制第1个OFDM符号的起始位置之前，因此，该部分信号可以认为是被丢失的有用信号。
同时，第1个OFDM符号对应的FFT接收窗内还会接收到上一个时隙经历径P到达接收端的信号(如图1中的粗线圆圈所示)，进而对第1个OFDM符号造成干扰。当丢掉的信号和受到的干扰足够大时，将会影响第1个OFDM符号的性能。尤其是当第1个OFDM符号是DMRS所在的OFDM符号时，会降低基于DMRS估计的信道的估计精度，进而降低解调性能。
其中，径P可以是指与第一条径的时延超过CP的径中的任意一条径，或者径P为与第一条径的时延超过NCP且与第一条径的时延最长的径，或者能量超过第一预设阈值的径且与第一条径的时延超过NCP的径，或者功率超过第二预设阈值且与第一条径的时延超过NCP的径。
因此，本申请实施例提供一种通信方法，可以减少第一个OFDM符号有用信号的丢失以及降低干扰，进而保证第一个OFDM符号的性能，具体的，如图5所示，该方法包括：
步骤500：网络设备向终端设备发送第一信息和第二信息。
其中，第一信息用于确定第一类型的符号分量的长度，第二信息用于确定第二类型的符号分量的长度和第三类型的符号分量的长度中的至少一个，第一类型符号分量的长度大于第三类型符号分量的长度。
可以理解的是，第一信息和第二信息可以分别对应不同的字段，由一个消息携带，例如无线资源控制(radio resource control，RRC)消息，或者第一信息和第二信息可以由不同消息携带，或者第一信息和/或第二信息是预配置或者由协议预定义，不需要网络设备发送给终端设备。
此外，第一类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数，例如，指定的FFT点数为2048，则指定的FFT点数下IFFT后的样点数为288，其长度为NCP长度的两倍。同理，第二类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数。第三类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数。
可以理解的是，IFFT后的样点数、绝对时间单位、指定的FFT点数下IFFT后的样点数之间可以相互转换。此外，一般地，NCP(或ECP)的长度的单位为ns，即绝对时间单位，因此，可以将NCP(或ECP)的长度的单位转换为IFFT后的样点数，或者指定的FFT 点数下IFFT后的样点数，即可以通过单位换算将NCP(或ECP)的长度的单位与第一类型符号分量的长度单位(或第二类型符号分量的长度的单位或第三类型符号分量的长度的单位)进行统一。
以下对第一信息和第二信息的具体实现方式进行说明：
1、第一信息
在一种实现方式中，第一类型符号分量的长度可以单独配置或通过差值的方式配置。其中差值也可以理解为差分值。
在一示例中，第一类型符号分量的长度进行单独配置。具体的，第一信息可以指示第一类型符号分量的长度或长度的索引。
例如，第一信息可以承载在带宽部分或部分带宽(bandwidth part，BWP)的配置中。具体的，可以在带宽部分的配置中增加新的字段，利用该新的字段来承载第一信息，指示第一类型符号分量的长度。示例性的，该新的字段可以命名为SCPfortheFirstSym，当然，也可以命名为其他名字，本申请不予限制第一类型符号分量。
在另一示例中，第一类型符号分量的长度通过差值的方式配置。具体的，第一信息可以指示第一类型符号分量的长度与第三类型符号分量的长度的差值或第一类型符号分量的长度索引与第三类型符号分量的长度索引的差值，或者第一信息可以指示第一类型符号分量的长度与第二类型符号分量的长度的差值或第一类型符号分量的长度索引与第二类型符号分量的长度索引的差值。
例如，预配置多个第一类型符号分量的长度和多个第三类型符号分量的长度，其中，每个第一类型符号分量的长度对应一个索引，每个第三类型符号分量的长度对应一个索引。第一信息可以指示第一类型符号分量的长度索引与第三类型符号分量的长度索引的差值，第二信息可以指示第三类型符号分量的长度索引。终端设备可以根据第一信息和第二信息确定第一类型符号分量的长度索引，进而确定第一类型符号分量的长度。
又例如，预配置多个第一类型符号分量的长度和多个第二类型符号分量的长度，其中，每个第一类型符号分量的长度对应一个索引，每个第二类型符号分量的长度对应一个索引。第一信息可以指示第一类型符号分量的长度索引与第二类型符号分量的长度索引的差值，第二信息可以指示第二类型符号分量的长度索引。终端设备可以根据第一信息和第二信息确定第一类型符号分量的长度索引，进而确定第一类型符号分量的长度。
需要说明的是，上述预配置的符号分量的长度与对应的索引可以直接存储在网络设备和终端设备，不需要信令通知；可选的，预配置的符号分量的长度与对应的索引也可以通过网络设备信令通知给终端设备，本申请不予限制。
可以理解的是，在第一类型符号分量长度通过差值的方式配置的实现方式下，上述两个例子仅以长度索引差值的方式进行举例，可替换的，长度索引也可以直接替换为长度，作为又一种实现方式，为了简洁，不予赘述。
2、第二信息
在第一种实现方式中，第二信息用于确定第二类型符号分量的长度。其中，第三类型符号分量的长度可以是预配置的或协议预定义的。
示例性地，在指定SCS下，第三类型符号分量的长度为第一预设值，其中，第一预设值可以是预配置或协议预定义的。第二信息指示第二类型符号分量的长度和NCP的长度之和。其中，第二类型符号分量的长度和NCP的长度之和可以介于NCP的长度和ECP的长 度之间，或者第二类型符号分量的长度和NCP的长度之和还可以大于等于ECP的长度(例如2倍ECP)。此外，第二类型符号分量的长度和NCP的长度之和又可以称为等效CP的长度。可以理解的是，第二类型符号分量的长度和NCP的长度之和，是在将NCP的长度的单位与第二类型符号分量的长度的单位换算为同一个单位后计算得到的。
终端设备可以根据第二类型符号分量的长度和NCP的长度之和，以及NCP的长度可以确定第二类型符号分量的长度。
以下仅以示例1和示例2为例说明第二信息的第一种实现方式：
示例1：
第三类型符号分量的长度为第一预设值，第二信息仅用于确定第二类型符号分量的长度。示例性的，可以在物理上行共享信道(physical uplink share channel,PUSCH)的配置信元(例如，PUSCH-Config)中承载第二信息，具体的，可以在PUSCH-Config中复用已有的字段或增加新的字段来承载或指示第二信息。一种可能的实现方式，该新的字段指示第二类型符号分量的长度和NCP的长度之和，例如，该新的字段可以用SCPHeadandTail表示，SCPHeadandTail的取值可以为(0,1,…,M)中的一个，M为大于等于2的正整数。M的大小取决于将NCP与ECP的长度差值均匀划分得到的份数，以使第二类型符号分量的长度和NCP的长度之和可以介于NCP的长度和ECP的长度之间。当然，该新的字段也可以命名为其他名字，本申请不予限制。
如图6A所示，当M＝15时，NCP与ECP的长度差值被均匀划分16份，当SCPHeadandTail取值为0时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP，当SCPHeadandTail取值为15时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+15/16*(ECP-NCP)。其中，当SCPHeadandTail的取值为7时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+7/16*(ECP-NCP)。
如图6B所示，当M＝15时，NCP与ECP的长度差值被均匀划分16份，当SCPHeadandTail取值为0时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+1/16*(ECP-NCP)，当SCPHeadandTail取值为15时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为ECP。其中，当SCPHeadandTail的取值为7时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+8/16*(ECP-NCP)。
如图6C所示，当M＝15时，NCP与ECP的长度差值被均匀划分为15份，当SCPHeadandTail取值为0时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP长度，当SCPHeadandTail取值为15时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为ECP长度。当SCPHeadandTail取值为7时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+7/15*(ECP-NCP)。
如图6D所示，当M＝15时，NCP与ECP的长度差值被均匀划分为17份，当SCPHeadandTail取值为0时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+1/17*(ECP-NCP)，当SCPHeadandTail取值为15时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+(15+1)/17*(ECP-NCP)。当SCPHeadandTail取值为7时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长 度之和为NCP+(7+1)/17*(ECP-NCP)。
需要说明的是，如图6A和图6C所示，当SCPHeadandTail取值为0时，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP，此时，第二类型符号分量的长度为0，一般来说，第二类型符号分量的长度不为0，因此，SCPHeadandTail的取值一般不为0，在这种情况下，0可以作为缺省值。此外，M取值为15仅为举例，还可以是其他值。在上述举例中，以将NCP与ECP的长度差值进行均匀划分为例进行说明，此外，还可以将NCP与2倍ECP的长度差值进行均匀划分，或者，还可以将NCP与0.8倍ECP的长度差值进行均匀划分，本申请对此不作限定。
此外，SCPHeadandTail的取值还可以为(0,1,…,M)中的多个，网络设备还可以进一步指示多种取值中的一种作为终端设备使用的配置。示例性地，网络设备可以向终端设备发送媒体接入控制控制元素(media access control control element，MAC CE)消息或下行控制信息(downlink control information，DCI)指示多个取值中的一个。例如，网络设备向终端设备发送RRC消息，RRC消息包括PUSCH-Config信元，PUSCH-Config信元包括SCPHeadandTail，SCPHeadandTail的取值为3，5，7。网络设备还可以向终端设备发送DCI，DCI指示SCPHeadandTail的取值为3。进而，终端设备可以根据SCPHeadandTail的取值为3确定第二类型符号分量的长度。
示例性地，当网络设备采用DCI为终端设备直接指示一个SCPHeadandTail的取值时，每个DCI的开销较大，例如，在M＝15时，DCI需要采用4比特指示一个SCPHeadandTail的取值。且当信道情况不稳定时，网络设备可能需要经常发送DCI指示新的SCPHeadandTail，DCI的开销问题更为明显。而采用上述方法，网络设备可以先指示多个SCPHeadandTail的取值，然后再通过DCI进一步指示多个SCPHeadandTail的取值中的一个，进而可以实现减小DCI的开销。例如，网络设备可以通过RRC消息或MAC CE消息指示3个SCPHeadandTail的取值，然后再根据当前信道情况向终端设备发送DCI，该DCI用于指示3个SCPHeadandTail的取值中的一个，此时，DCI仅需要2比特就可以实现指示3个SCPHeadandTail的取值中的一个。此外，由于信道情况改变，在网络设备需要指示新的SCPHeadandTail的取值时，网络设备可以向终端设备发送DCI，用以更新SCPHeadandTail的取值，此时的DCI仍可以指示3个SCPHeadandTail的取值中的一个，DCI的开销仍为2比特。因此，采用上述方法能够实现减小DCI的开销。
采用上述示例1提供的方法，通过在PUSCH的配置信元中复用已有的字段或增加新的字段来承载或指示第二信息，可以实现对每个终端设备有针对性地配置第二类型符号分量的长度，该方法灵活度较高，实现简便。
示例2：
第三类型符号分量的长度为第一预设值，第二信息仅用于确定第二类型符号分量的长度。示例性的，第二信息可以承载在带宽部分或部分带宽(bandwidth part，BWP)的配置中，例如增加新的选项，该新的选项用于承载或指示第二信息。示例性的，该新的选项可以用cyclicPrefix选项表示，cyclicPrefix选项可以指示：{extended,SCP1,SCP2,…,SCP K}中的一个，其中，extended表示ECP，SCP1～SCP K为添加的配置，K为正整数，SCP1～SCP K的含义可以通过协议预先定义，例如，SCP1～SCP K为K种第二类型符号分量的长度和NCP的长度之和。也就是说，第二信息可以通过cyclicPrefix来指示，具体的，指示第二类型符号分量的长度和NCP的长度之和。
可选的，cyclicPrefix选项还可以指示：{extended,SCP1,SCP2,…,SCP K}中的多个，网络设备还可以进一步指示多个cyclicPrefix选项中的一种作为终端设备使用的配置。例如，网络设备可以向终端设备发送MAC CE或DCI指示具体的cyclicPrefix选项。例如，网络设备向终端设备发送RRC消息，RRC消息包括BWP的配置，BWP的配置包括cyclicPrefix选项(也就是第二信息)，cyclicPrefix选项指示SCP1,SCP2。进一步的，网络设备还可以向终端设备发送DCI，DCI指示具体的cyclicPrefix选项，例如SCP1。进而，终端设备可以根据SCP1确定第二类型符号分量的长度。具体效果可以参考上述关于网络设备指示多个SCPHeadandTail的取值的相关描述，重复之处不再赘述。
采用上述示例2提供的方法，相比现有的CP仅能在NCP和ECP中选择，示例2提供了更多种CP长度的选择，例如，SCP1,SCP2,…,SCP K，且同时能够兼容现有系统。
在第二种实现方式中，第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度。
以下结合方式1至方式4进一步说明第二信息的第二种实现方式：
方式1：第二信息可以分别指示第二类型符号分量的长度和第三类型符号分量的长度。例如，第二信息可以承载在PUSCH的配置信元(例如，PUSCH-Config)中，具体的，可以在PUSCH-Config中增加字段SCPHeadPart和SCPTailPart，用于承载或指示第二信息。示例性的，SCPHeadPart和SCPTailPart分别指示第三类型符号分量的长度或长度的索引和第二类型符号分量的长度或长度的索引。也就是说，SCPHeadPart和SCPTailPart作为第二信息指示第三类型符号分量的长度或长度的索引和第二类型符号分量的长度或长度的索引。
方式2：预配置多个组合，每个组合包括一个第二类型符号分量的长度和一个第三类型符号分量的长度，每个组合对应一个索引，该索引对应一个第二类型符号分量的长度和一个第三类型符号分量的长度，第二信息通过指示组合的索引指示一组第二类型符号分量的长度和第三类型符号分量的长度。
此外，还可以预配置多个组合，每个组合包括一个第一类型符号分量的长度、一个第二类型符号分量的长度和一个第三类型符号分量的长度，每个组合对应一个索引，该索引对应一个第一类型符号分量的长度、一个第二类型符号分量的长度和一个第三类型符号分量的长度。此时第一信息和第二信息可以作为一个信息，该信息通过指示组合的索引指示一组第一类型符号分量的长度、第二类型符号分量的长度和第三类型符号分量的长度对应的索引。
其中，组合的索引与符号分量的长度的对应关系可以提前配置给终端设备，例如以映射关系表的形式体现，当终端设备收到组合的索引时，可以直接通过查表得到对应的符号分量的长度，进一步节省信令开销。
方式3：第二信息可以指示第三类型符号分量的长度，以及第二类型符号分量的长度与NCP的长度之和。
示例性地，第二信息可以承载在PUSCH的配置信元(例如，PUSCH-Config)中，例如，在PUSCH-Config中增加新的字段，该新的字段可以承载或指示第二信息。具体的，该新的字段指示第三类型符号分量的长度以及第二类型符号分量的长度和NCP的长度之和。例如，该新的字段可以用SCPHeadandTail表示，SCPHeadandTail的取值可以为(0,1,…,M)中的一个，M为大于等于2的正整数。M的大小取决于将NCP与ECP的差值均匀划分 得到的份数，以使第二类型符号分量的长度和NCP的长度之和可以介于NCP和ECP之间。如图6E所示，当M＝15时，NCP与ECP的差值被均匀划分8份，其中，SCPHeadandTail的取值为0～7，均表示第三类型符号分量的长度为H1，SCPHeadandTail的取值为8～15，均表示第三类型符号分量的长度为H2，其中，H1和H2为预配置或协议预定义的。在SCPHeadandTail的取值为0～7时，根据SCPHeadandTail的取值确定第二类型符号分量的长度和NCP的长度之和的具体方法可以参考上述示例1的相关内容，重复之处不再赘述。在SCPHeadandTail的取值为8～15时，需要首先将SCPHeadandTail的取值转换到0～7的范围内。具体的，在SCPHeadandTail的取值为8～15时，可以先求得SCPHeadandTail的取值与8的差值，并根据该差值确定第二类型符号分量的长度和NCP的长度之和。
例如，在SCPHeadandTail的取值为12时，SCPHeadandTail指示第三类型符号分量的长度为H2，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+(12-8)/8(ECP-NCP)。在SCPHeadandTail的取值为4时，SCPHeadandTail指示第三类型符号分量的长度为H1，SCPHeadandTail指示第二类型符号分量的长度和NCP的长度之和为NCP+4/8(ECP-NCP)。可见，在SCPHeadandTail的取值为12时，第二类型符号分量的长度和NCP的长度之和与在SCPHeadandTail的取值为4时，第二类型符号分量的长度和NCP的长度之和相同，或者描述为在SCPHeadandTail的取值为12时，第二类型符号分量的长度与在SCPHeadandTail的取值为4时，第二类型符号分量的长度相同。同理，在SCPHeadandTail的取值为8+W时，第二类型符号分量的长度和NCP的长度之和与在SCPHeadandTail的取值为W时，第二类型符号分量的长度和NCP的长度之和相同，或者描述为，在SCPHeadandTail的取值为8+W时，第二类型符号分量的长度与在SCPHeadandTail的取值为W时，第二类型符号分量的长度相同，其中，1≤W≤7，W为整数。
如表2所示，当SCPHeadandTail的取值为0～7时，Dh的取值为H1，当SCPHeadandTail的取值为8～15时，Dh的取值为H2。其中，Dh对应第三类型的符号分类的长度，Dt对应第二类型符号分量的长度。例如，以表2中的第3行为例，当SCPHeadandTail的取值为1时，Dh的取值为H1，当SCPHeadandTail的取值为9时，Dh的取值为H2，当SCPHeadandTail的取值为1时Dt对应的第二类型符号分量的长度，与当SCPHeadandTail的取值为9时Dt对应的第二类型符号分量的长度相同，且Dt的第二类型符号分量的长度可以根据SCPHeadandTail的取值为1进行计算，即Dt的第二类型符号分量的长度为1/8(ECP-NCP)。
表2
Figure PCTCN2022116602-appb-000002
方式4：第二信息可以指示第二类型符号分量的长度和第三类型符号分量的长度之和，以及第二类型符号分量的长度；或者，第二信息可以指示第二类型符号分量的长度和第三类型符号分量的长度之和，以及第三类型符号分量的长度。
示例性地，如表3所示，假设0≤Dh+Dt≤7，Dh≤Dt，Dt的取值范围为0～7，Dh的取值范围为0～3，其中，Dh对应第三类型的符号分类的长度，Dt对应第二类型的符号分类的长度。Dh和Dt采用联合编码的方式进行指示，其中，联合编码取值范围为0～19，每个联合编码的取值对应唯一一组Dh与Dt。例如，如表3可知，当联合编码取值为3时，Dt的取值为1，Dh的取值为1，Dh+Dt＝2。又例如，当联合编码取值为2时，Dt的取值为0，Dh的取值为2，Dh+Dt＝2。可见，相同的Dh与Dt之和可以对应不同的联合编码的取值。示例性地，当Dh+Dt＝3时，联合编码的取值可以为4或5；当Dh+Dt＝4时，联合编码的取值可以为6或7或8；当Dh+Dt＝5时，联合编码的取值可以为9或10或11；当Dh+Dt＝6时，联合编码的取值可以为12或13或14或15；当Dh+Dt＝7时，联合编码的取值可以为16或17或18或19。
又例如，假设0≤Dh+Dt≤8，Dh≤Dt，Dt的取值范围为0～7，Dh的取值范围为0～3，Dh和Dt采用联合编码的方式指示可以如表4所示；或者，假设0≤Dh+Dt≤8，Dh≤Dt，Dt的取值范围为0～8，Dh的取值范围为0～4，Dh和Dt采用联合编码的方式指示可以如表5所示。需要说明的是，关于Dh和Dt采用联合编码的方式指示不仅限于表3～表5的举例，还有其他的指示方式，例如，假设0≤Dh+Dt≤A max，Dh<＝Dt，Dt的取值范围为0～B max，Dh的取值范围为0～C max可类似举例，其中B max<＝A max,C max<＝floor(A max/2)。
示例性地，网络设备可以为终端设备提前配置表3或表4或表5，Dt的取值与第二类型符号分量的长度的对应关系，以及Dh的取值与第三类型符号分量的长度的对应关系。网络设备向终端设备发送第二信息，第二信息指示联合编码的取值，终端设备根据联合编码的取值以及表3或表4或表5确定Dt的取值和Dh的取值，并根据Dt的取值与第二类型符号分量的长度的对应关系确定第二类型符号分量的长度，以及Dh的取值与第三类型符号分量的长度的对应关系确定第三类型符号分量的长度。
需要说明的是，上述表3或表4或表5、Dt的取值与第二类型符号分量的长度的对应关系，以及Dh的取值与第三类型符号分量的长度的对应关系可以直接存储在网络设备和终端设备，不需要信令通知；可选的，表3或表4或表5、Dt的取值与第二类型符号分量的长度的对应关系，以及Dh的取值与第三类型符号分量的长度的对应关系也可以通过网络设备信令通知给终端设备，本申请不予限制。
表3
Figure PCTCN2022116602-appb-000003
Figure PCTCN2022116602-appb-000004
表4
Figure PCTCN2022116602-appb-000005
表5
Figure PCTCN2022116602-appb-000006
需要说明的是，上述第一类型符号分量的长度、第二类型符号分量的长度和第三类型符号分量的长度的配置方式仅为举例，还可以有其他的配置方式，本申请对此不作限定。
步骤510：终端设备根据第一信息和第二信息确定多个块信号，每个块信号包括多个调制符号。
其中，本申请中涉及的调制符号可以是BPSK调制符号，π/2BPSK调制符号，正交相移键控(quaternary phase shift keying，QSPK)调制符号，16QAM调制符号，64QAM调制符号，256QAM调制符号中的任意一种，本申请对此不作限定。
以下结合附图说明确定终端设备根据第一信息和第二信息确定多个块信号的具体过程：
具体的，终端设备可以根据第一信息和第二信息确定传输块的大小。
需要说明的是，由于后一个块信号需要复制前一个块信号中的部分调制符号，相比不存在块间复制的场景(又可称为NCP场景)，以上行传输为例，PUSCH除了第一个OFDM符号的每个OFDM符号上的有效资源数会变少。因此，当传输总信息量(如上行数据、测量信息、反馈信息等)不变时，在块间复制的场景下，每个时频资源所承载的信息，多于在 不存在块间复制的场景下，每个时频资源所承载的信息，导致码率升高，即实际码率大于配置码率。其中，配置码率是网络设备为终端设备配置的，例如可以根据MCS查表获得。
因此，为了实际码率和配置码率的差异在一定的范围内，收发信息的两端均需要重新确定的传输块的大小，即根据有效的资源单元数(考虑为块间复制预留的资源)重新确定传输块的大小。可以理解的是，存在块间复制的场景下重新确定的传输块的大小小于不存在块间复制的场景下(例如NCP场景)确定的传输块的大小。
示例性地，终端设备确定传输块的大小可以包括以下步骤：
步骤一，终端设备可以根据第一信息和第二信息确定第一类型符号分量、第二类型符号分量和/或第三类型符号分量的长度，根据第一类型符号分量的长度可以确定第一类型符号分量包括的调制符号数，以及根据第二类型符号分量的长度确定第二类型符号分量包括的调制符号数，以及根据第三类型符号分量的长度确定第三类型符号分量包括的调制符号数。
具体的，以符号分量的长度单位为绝对时间为例，终端设备可以根据第一信息和第二信息确定第一类型符号分量的绝对时间Q1、第二类型符号分量的绝对时间Q2和第三类型符号分量的绝对时间Q3，则第一类型符号分量包括的调制符号数满足QAM1＝ceil(Q1*SCS*N RB*N RE/RB)，第二类型符号分量包括的调制符号数满足QAM2＝ceil(Q2*SCS*N RB*N RE/RB)，第三类型符号分量包括的调制符号数满足QAM3＝ceil(Q3*SCS*N RB*N RE/RB)。
以符号分量的长度单位为IFFT后的采样点数为例，终端设备可以根据第一信息和第二信息确定第一类型符号分量的IFFT后的采样点数M1、第二类型符号分量的IFFT后的采样点数M2和第三类型符号分量的IFFT后的采样点数M3，则第一类型符号分量包括的调制符号数满足QAM1＝ceil(M1/N fft*N RB*N RE/RB)，第二类型符号分量包括的调制符号数满足QAM2＝ceil(M2/N fft*N RB*N RE/RB)，第三类型符号分量包括的调制符号数满足QAM3＝ceil(M3/N fft*N RB*N RE/RB)。
以符号分量的长度单位为指定的FFT点数下IFFT后的采样点为例，终端设备可以根据第一信息和第二信息确定第一类型符号分量在指定的FFT点数下IFFT后的采样点数S1、第二类型符号分量在指定的FFT点数下IFFT后的采样点数S2和第三类型符号分量在指定的FFT点数下IFFT后的采样点数S3，则第一类型符号分量包括的调制符号数满足QAM1＝ceil(S1/N fft-r*N RB*N RE/RB)，第二类型符号分量包括的调制符号数满足QAM2＝ceil(S2*/N fft-r*N RB*N RE/RB)，第三类型符号分量包括的调制符号数满足QAM3＝ceil(S3/N fft-r*N RB*N RE/RB)。
其中，ceil(x)表示对x向上取整，此外，向上取整还可以替换为向下取整或四舍五入。Q1、Q2、Q3单位为秒(s)，N RB为分配给终端设备的调度带宽包括的资源块(Resource Block,RB)数，N RE/RB为每个RB在频域包含的RE数，一般取值为12，SCS为子载波间隔，单位为Hz，N fft表示当前BWP下实际的FFT点数，如BWP带宽为1600MHz，SCS为480kHz时，N fft为4096，N fft-r为指定的或参考的FFT点数，如2048，或4096，或512，或256。
步骤二，终端设备可以根据第一类型符号分量包括的调制符号数、第二类型符号分量包括的调制符号数和第三类型符号分量包括的调制符号数确定第一资源单元数N1，第一资源单元数N1指示一个时隙内不同块信号间的相同调制符号对应的资源单元总数。
步骤三，终端设备可以根据第二资源单元数N2和第一资源单元数N1确定传输块的大 小，第二资源单元数N2为一个时隙内用于传输第三信息的资源单元数。
其中，第三信息为终端设备需要发送给网络设备的信息。示例性地，第三信息可以为上行数据或测量信息或反馈信息，如信道质量信息(channel quality information,CQI)，参考信号接收功率(reference signal received power，RSRP)，发射预编码矩阵信息(transmitted precoding matrix information，TPMI)，混合自动重传请求确认信息(hybrid automatic repeat request-acknowledgment,HARQ-ACK)等。
示例性地，假设一个时隙包括一个用于传输DMRS的符号，S个符号用于传输上行数据或测量信息或反馈信息(不包括DMRS符号)的符号，E个特殊符号(例如，特殊符号是根据包括第一类型符号分量的块信号确定的，在当前的举例中，特殊符号为第一个OFDM符号，即E＝1)，则整个时隙因块间重复的符号分量减少的有效资源数(即第一资源单元数)为：
N1＝QAM3*(S-E)+QAM1*E+QAM2*S
N2为一个时隙内S个符号对应的资源单元数。其中，N2可以参考现有协议中的定义，具体可以参考协议38.214的5.1.2.3节内容。
示例性地，在终端设备根据第二资源单元数N2和第一资源单元数N1确定传输块的大小时，终端设备可以采用但不限于以下方式：
方式1：终端设备根据第二资源单元数N2与第一资源单元数N1的差值确定传输块的大小。采用方式1，在计算传输块的大小时考虑为块间复制预留的资源，可以保证码率与配置码率的差异在一定范围内，进而保证解调性能。第二资源单元数N2与第一资源单元数N1的差值为有效的资源单元数，也可以理解为去掉块间复制预留的资源后的资源单元数。
方式2：终端设备根据第二资源单元数N2和第一量化值的差值确定传输块的大小，第一量化值是第一资源单元数N1按照预设间隔量化后得到的。第二资源单元数N2与第一量化值的差值为有效的资源单元数。
示例性地，第一量化值为q(N1)，其中，q(N1)表示对N1按预设间隔量化，q(N1)满足0<＝q(N1)<＝N1。例如，q(N1)可以为floor(N1/△N)*△N，floor(...)表示向下取整，△N为预设量化间隔，当N1＝670，预设量化间隔△N是45时，q(N1)取值为630。当N1＝635，预设间隔△N是45时，q(N1)取值为630。
采用方式2可以在计算传输块的大小时考虑为块间复制预留的资源，同时对收发端双方计算N2预留一定的容差范围，在码率提升和传输块减少之间取得较好的折中，同时，还可以允许收发端双方计算N2时有一定的误差。
在确定传输块的大小之后，以下结合图2B说明生成多个块信号的过程：
信源比特生成模块：用于根据传输块的大小将第三信息生成原始信源比特；
编码模块：用于对原始信源比特添加冗余码、校验码等；
QAM调制模块：用于将编码后的比特按调制阶数映射成调制符号；
映射/排列模块：用于将调制符号按映射或排列为多个块信号，或者称之为串并转换。示例性地，QAM调制模块将调制符号按顺序依次映射至块，并完成串并转换，如图7的左图所示，从上至下的箭头表示在一个块内调制符号按照从上往下的顺序依次映射，从左往右的虚线箭头表示多个块之间调制符号的映射过程，即在一个块内的调制信号映射完成后，继续向与该块相邻的右侧的块中映射调制符号。其中黑色粗线部分表示预留给复制操 作的资源或位置，不映射QAM调制符号。在完成调制符号到块的映射后，执行复制操作，即将一个块的部分调制符号复制至相邻的另一个块上，本申请中的复制操作是指“前向复制”，即复制前一个块的调制符号至后一个块。如图7右图所示，箭头1指示的方向表示块1上第一类型符号分量(也就是DMRS块中左斜线所示的阴影部分)被复制到块2上，箭头2指示的方向表示块1上第二类型符号分量(也就是DMRS块中交叉线所示的阴影部分)被复制到块2上，箭头3指示的方向表示块2上第三类型符号分量(也就是数据块0上竖线所示的阴影部分)被复制到块3上，箭头4指示的方向表示块2上第二类型符号分量(也就是数据块0上交叉线所示的阴影部分)被复制到块3上。箭头5指示的方向表示块3上第三类型符号分量(也就是数据块1上竖线所示的阴影部分)被复制到块4上，箭头6指示的方向表示块3上第二类型符号分量(也就是数据块1上交叉线所示的阴影部分)被复制到块4上。
其中，多个块信号具有以下特征：第1个块信号包括第一类型符号分量和第二类型符号分量，第2个块信号包括与第1个块信号中第一类型符号分量和第二类型符号分量相同的调制符号，第k+1个块信号包括与第k个块信号中第二类型符号分量和第三类型符号分量相同的调制符号，k≥2，k为整数。
示例性地，第一类型符号分量为第1个块信号中的前X个调制符号，在第2个块信号中，与第1个块信号中第一类型符号分量相同的调制符号的起始调制符号与第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据NCP的持续时间确定的，m＞1，X＞1，X为整数，m为整数。其中，m个调制符号的持续时间与NCP的持续时间相同或近似相等。示例性地，m个调制符号的持续时间与NCP的持续时间近似相等可以理解为m个调制符号的持续时间与NCP的持续时间的差值小于预设阈值。
为了描述简便，在第2个块信号中，与第1个块信号中第一类型符号分量相同的调制符号记为第2个块信号中的符号分量P，第2个块信号中的符号分量P的起始调制符号与第2个块信号的最后一个调制符号相差m-1个调制符号，还可以描述为，第2个块信号中的符号分量P的起始符号与第2个块信号的最后一个调制符号间隔m-2个调制符号，其中，这m-2个调制符号不包括第2个块信号中的符号分量P的起始调制符号，也不包括第2个块信号的最后一个调制符号,m-2>＝0。
第k-1个块信号中的第二类型符号分量为第k-1个块信号中的最后Y个调制符号，在第k块信号中，与第k-1个块信号中第二类型符号分量相同的调制符号的结束调制符号与第k块信号的最后一个调制符号相差m个调制符号，Y≥1，Y为整数。为了描述简便，在第k个块信号中，与第k-1个块信号中第二类型符号分量相同的调制符号记为第k个块信号中的符号分量Q，第k个块信号中的符号分量Q的结束调制符号与第k个块信号的最后一个调制符号相差m个调制符号，还可以描述为，第k个块信号中的符号分量Q的结束调制符号与第k个块信号的最后一个调制符号间隔m-1个调制符号，其中，这m-1个调制符号不包括第k个块信号中的符号分量Q的结束调制符号，也不包括第k个块信号的最后一个调制符号,m-1>＝0。
第k块信号中的第三类型符号分量为第k块信号中的前Z个调制符号，Z＜X，Z≥1，Z为整数，在第k+1个块信号中，与第k个块信号中第三类型符号分量相同的调制符号的起始调制符号与第k+1个符号的最后一个调制符号相差m-1个调制符号。为了描述简便，在第k+1个块信号中，与第k个块信号中第三类型符号分量相同的调制符号记为第k+1个 块信号中的符号分量R，第k+1个块信号中的符号分量R的起始调制符号与第k+1个块信号的最后一个调制符号相差m-1个调制符号，还可以描述为，第k+1个块信号中的符号分量R的起始调制符号与第k+1个块信号的最后一个调制符号间隔m-2个调制符号，其中，这m-2个调制符号不包括第k+1个块信号中的符号分量R的起始调制符号，也不包括第k+1个块信号的最后一个调制符号，m-2>＝0。
如图8所示，以3个块信号为例说明本申请实施例中获得的块信号的具体结构。
每个块信号中的分界点A与B之间包含m个调制符号，B点为每个块信号的最后一个调制符号的结束位置。其中，m个调制符号的持续时间与NCP的持续时间相同，也可以理解为NCP持续时间对应的调制符号数为m，即每个块的分界点A为CP起始位置对应的调制符号的位置。
其中，第1个块信号的头部边框对应的符号分量为第一类型符号分量(对应图8中的dH0)，第一个块信号的尾部边框对应的符号分量为第二类型符号分量(对应图8中的dT0)。
第1个块信号中的第一类型符号分量被复制至第2个块信号的分界点A的右边，即为第2个块信号中的符号分量P，第2个块信号中的符号分量P的起始调制符号与第2个块信号的最后一个调制符号相差m-1个调制符号。第2个块信号中的符号分量P的起始调制符号是指在第2个块信号中A点右侧的第一个调制符号。例如，第2个块信号中的符号分量P的起始调制符号为第2个块信号中的第n+1个调制符号，第2个块信号中的最后一个调制符号为第2个块信号中的第m+n个调制符号，则第2个块信号中的符号分量P的起始调制符号与第2个块信号的最后一个调制符号相差[(m+n)-(n+1)]个调制符号。
第1个块信号中的第二类型符号分量被复制至第2个块信号的分界点A的左边，即为第2个块信号中的符号分量Q，第2个块信号中的符号分量Q的结束调制符号与第2个块信号的最后一个调制符号相差m个调制符号。第2个块信号中的符号分量Q的结束调制符号是指在第2个块信号中A点左侧的第一个调制符号。例如，第2个块信号中的符号分量Q的结束调制符号为第2个块信号中的第n个调制符号，第2个块信号中的最后一个调制符号为第2个块信号中的第m+n个调制符号，则第2个块信号中的符号分量Q的起始调制符号与第2个块信号的最后一个调制符号相差[(m+n)-n]个调制符号。
因此，第2个块信号中的符号分量Q的结束调制符号与第2个块信号中的符号分量P的起始调制符号为相邻的调制符号。
类似地，第2个块信号的头部边框对应的符号分量为第三类型符号分量(对应图8中的dH1)，第2个块信号的尾部边框对应的符号分量为第二类型符号分量(对应图8中的dT1)。
第2个块信号中的第三类型符号分量被复制至第3个块信号的分界点A的右边，即为第三个块信号中的符号分量R，第3个块信号中的符号分量R的起始调制符号与第3个块信号的最后一个调制符号相差m-1个调制符号。第3个块信号中的符号分量R的起始调制符号是指在第3个块信号中A点右侧的第一个调制符号。
第2个块信号中的第二类型符号分量被复制至第3个块信号的分界点A的左边，即为第3个块信号中的符号分量Q，第3个块信号中的符号分量Q的结束调制符号与第3个块信号的最后一个调制符号相差m个调制符号。
步骤520：终端设备对多个块信号中的每个块信号进行处理，得到与块信号对应的OFDM符号。
其中，终端设备对多个块信号中的每个块信号进行处理，可以是指每个块信号需要依次执行如下操作：DFT、RE映射、IFFT、添加CP。具体可以参阅图2B所示的相关内容，重复之处不再赘述。
如图9所示为图8所示块信号经DFT、RE映射、IFFT处理后得到OFDM符号，并为OFDM符号添加CP后的时域符号示意图，其中，虚线框表示等效CP对应的信号。
由前述分析可知，图9中粗虚线框对应的信号相同，使得粗实线箭头时间范围内对应的所有信号实现首尾循环特性，且循环长度为NCP的长度与尾部边框对应的信号的长度(即第二类型符号分量的长度)之和，即相当于等效CP持续时间相比于NCP延长了第二类型符号分量对应的持续时间，第二个符号的等效CP的持续时间即一个粗线框的持续时间。因此，当多个终端设备经历的信道有不同时延时，可以通过给多个终端设备配置或设置不同长度的第二类型符号分量的长度，实现持续时间或长度灵活可调的等效CP。
其中，这里的等效CP与上述第二信息指示的第二类型符号分量的长度与NCP的长度之和的含义相同，可以互相参考。
其中，第二类型符号分量用于实现灵活的等效CP，且相比NCP有更长的长度，第一类型符号分量和第三类型符号分量用于保证接收窗(图9中粗虚线箭头时间范围)边缘的相位连续性，使得接收窗边缘的信号相位平滑过渡，不影响邻道泄漏功率比(adjacent channel leakage power ratio,ACLR)的性能。
进一步的，由于第一类型符号分量的长度大于第三类型符号分量长度，可以通过延迟第1个OFDM符号对应的接收窗，使得经历径P到达的第1个OFDM符号的接收信号也能被接收窗完整接收，同时保证经历第一条径到达的接收信号也能被完整接收，以降低超过NCP长度的径对第1个OFDM符号的性能的影响。其中，径P与第一条径的时延差大于NCP的持续时间，此外，径P与第一条径的功率差小于或等于指定阈值P thdB(P p-P 1<＝P thdB)或大于或等于-P thdB(P p-P 1>＝-P thdB)。其中，P 1为第一条径的平均功率，P p为径P的平均功率，P th的取值可以为15。
此外，需要说明的是，由于上述获取灵活CP的复制操作仅在时隙内的符号间执行，即不会将当前时隙的信号复制至到下一个时隙，也不会将当前时隙的信号复制至前一个时隙。
步骤530：终端设备发送OFDM符号。
示例性地，终端设备可以依次对多个块信号中的每个块信号进行处理，得到与该块信号对应的OFDM符号，并发送该OFDM符号，即每次得到一个OFDM符号就发送一个OFDM符号，不必等待其他块信号处理完成后，与其他信号分别对应的OFDM符号一起发送。或者，终端设备依次对多个块信号中的每个块信号进行处理，得到多个块信号分别对应的OFDM符号，终端设备按时间顺序依次发送多个块信号分别对应的OFDM符号。
步骤540：网络设备确定多个OFDM符号中的每个OFDM符号对应的接收窗。
其中，每个OFDM符号对应的接收窗是指每个OFDM符号对应的FFT接收窗。
网络设备可以采用但不限于以下方式确定第1个OFDM符号对应的接收窗：
方式A：网络设备可以根据第一类型符号分量的长度确定第1个OFDM符号对应的接收窗，第1个OFDM符号对应的接收窗的起始点与第一类型符号分量的长度关联。
示例性地，第1个OFDM符号对应的接收窗的起始点可以为第1个OFDM符号中与第一类型符号分量的最后一个调制符号关联的采样点。如图10所示，第1个OFDM符号 的FFT接收窗相较于常规的FFT接收窗(如虚线框所示)整体延迟了△t1，对应N delay1个IFFT后(或者FFT前)的采样点。其中，△t1和N delay1个IFFT后(或者FFT前)的采样点是根据第一类型符号分量的长度确定的。
方式B：网络设备可以根据第一类型符号分量的长度和第三类型符号分量的长度之差确定第1个OFDM符号对应的第1个接收窗，第1个OFDM符号对应的接收窗的起始点与第一类型符号分量的长度和第三类型符号分量的长度之差关联。
示例性地，第1个接收窗的起始点可以为第1个OFDM符号中与第一类型符号分量的长度和与第三类型符号分量的长度的差值的关联的采样点。第1个OFDM符号的FFT接收窗相较于常规的FFT接收窗整体延迟了△t2，对应N delay2个IFFT后(或者FFT前)的采样点。其中，△t2和N delay2个IFFT后(或者FFT前)的采样点是根据第一类型符号分量的长度和与第三类型符号分量的长度的差值确定的。其中，△t1＞△t2，N delay1＞N delay2。
方式C：网络设备根据第一类型符号分量的长度或第一类型符号分量的长度与第三类型符号分量的长度之差确定多个候选接收窗，网络设备根据预设参数从多个候选接收窗中选择其中一个作为第1个OFDM符号对应的接收窗。
示例性地，多个候选接收窗的起始点中的任意两个相邻的起始点的间隔为△T个采样点，△T为预设值，△T为正整数。其中，预设参数可以包括但不限于噪声功率，误码率，误比特率最低，QAM解调信号的方差(mean squared error，MSE)中的一个或多个。因此，网络设备可以通过多个第1个OFDM符号对应的接收窗分别得到的信号，选择其中噪声功率最小，或误码率或误比特率最低，或QAM解调信号的方差最小的信号所对应的接收窗作为最终确定的第1个OFDM符号对应的接收窗。
例如，针对第1个OFDM符号确定一个滑动FFT接收窗，从常规的FFT接收窗开始，第k次延迟k*△T个IFFT后(或者FFT前)的采样点，△T为滑动FFT接收窗的滑动步长。其中，△T可以根据N delay1确定，△T＝N delay1/S，S为滑动次数，其中，滑动FFT接收窗可以不包括常规的FFT接收窗，假设S＝3，第1个滑动接收窗为常规的FFT的接收窗延迟N delay1/3个IFFT后(或者FFT前)的采样点，第2个滑动接收窗为常规的FFT的接收窗延迟2N delay1/3个IFFT后(或者FFT前)的采样点，第3个滑动接收窗为常规的FFT的接收窗延迟N delay1个IFFT后(或者FFT前)的采样点。然后，网络设备从其中选择最优的性能的FFT接收窗作为第1个OFDM符号对应的FFT接收窗，例如，通过该最优的性能的FFT接收窗得到的信号的噪声功率最小，误码率或误比特率最低或QAM解调信号的方差最小。或者，网络设备选择首个能够正确解调第1个OFDM符号的FFT接收窗，例如，网络设备可以根据k的取值从小到大的顺序确定的能够正确解调第1个OFDM符号的第一个FFT接收窗作为第1个OFDM符号对应的FFT接收窗。
可以理解的是，上述方式C还可应用于第一类型符号分量的长度与第三类型符号分量的长度相同的场景。
如前分析可知，如果是常规的接收窗，会导致经历径P(与第一条径的时延超过NCP的径)到达的第1个OFDM符号的部分信号落在接收窗外，同时会有一部分经历径P到达的上一个时隙的部分信号落入接收窗内，影响第1个OFDM符号的性能。而采用本申请提供方法可以使得经历径P到达的第1个OFDM符号的接收信号也能被第1个OFDM符号对应的接收窗完整接收，以降低超过NCP长度的径对第1个OFDM符号的性能的影响。
除第1个OFDM符号之外的OFDM符号，网络设备可以根据NCP的持续时间确定每 个OFDM符号对应的接收窗。其中，第1个OFDM符号对应的接收窗的结束点与第2个OFDM符号对应的接收窗的起始点的间隔为T1个采样点，第k个OFDM符号对应的接收窗的结束点与第k+1个OFDM符号对应的接收窗的起始点的间隔为T2个采样点，T1<T2，T1和T2为正整数。可以理解为，由于第1个OFDM符号对应的接收窗的延迟，使得第1个OFDM符号对应的接收窗的结束点与第2个OFDM符号对应的接收窗的起始点的间隔(以下简称为第1个OFDM符号对应的接收窗与第2个OFDM符号对应的接收窗之间的间隔)小于其他相邻接收窗之间的间隔。
步骤550：网络设备根据每个OFDM符号对应的接收窗获取每个OFDM符号的解调信号。
可以理解的是，网络设备在确定每个OFDM符号对应的接收窗之后，可以获得根据每个OFDM符号对应的接收窗确定去CP后的OFDM符号，然后以OFDM符号为单位执行FFT操作，即获取每个OFDM符号的OFDM解调信号，并继续后续的信道均衡、DFT操作，得到以块为单位的接收信号。
进一步地，网络设备根据第一类型符号分量、第二类型符号分量以及第三类型符号分量解调每个块信号的接收信号，获得接收比特信息。
根据前文的描述可知，存在一部分信号在整个时隙上传输了两次，如在第k个块信号和第k+1个块信号上各传输一次。但是，需要说明的是，由于信号在传输过程中受到干扰，第1个块信号的接收信号中对应第一类型符号分量和第二类型符号分量的接收信号与第1个块信号中的第一类型符号分量和第二类型符号分量并非完全相同。同理，由于信号在传输过程中受到干扰，虽然第2个块信号包括与第1个块信号中第一类型符号分量和第二类型符号分量相同的调制符号，但是第2个块信号的接收信号中对应第1个块信号中第一类型符号分量的接收信号，以及对应第1个块信号的第二类型符号分量的接收信号，并非与第1个块信号的接收信号中对应第一类型符号分量的接收信号和对应第二类型符号分量的接收信号完全相同。
可以理解的是，由上文可知，对于发送端，块信号包括多个调制信号，相应的，对于接收端，块信号的接收信号包括与多个调制信号分别对应的接收信号。一般地，在信号传输过程中，不会改变块信号中多个调制符号的排列顺序，因此，块信号的接收信号中与多个调制信号分别对应的接收信号排列顺序与块信号中多个调制符号的排列顺序保持一致，例如，块信号中多个调制符号的排列顺序为调制符号1，调制符号2，调制符号3，则块信号的接收信号中与多个调制信号分别对应的接收信号排列顺序为调制符号1对应的接收信号，调制符号2对应的接收信号，调制符号3对应的接收信号。
例如，接收信号表示为A(i,t)＝x(i,t)+n(i,t)，x(i,t)为发射端(例如，终端设备)发送的第t个块信号中的第i个QAM调制符号，n(i,t)表示接收端(例如，网络设备)接收到的第t个块信号的接收信号中的在第i个QAM调制符号上对应的噪声；A(i,t)表示第t个块信号的接收信号中对应第i个QAM调制符号的接收信号。
由于不同块信号的接收信号中不同QAM调制符号上的噪声不同，导致在不同块信号的接收信号中对应同一个QAM调制符号的接收信号不同。
为了描述方便，这里将第1个块信号中的第一类型符号分量和第二类型符号分量，记为A 1，第2个块信号中与第1个块信号中的第一类型符号分量和第二类型符号分量相同的QAM调制符号，记为B 1，第1个块信号的接收信号中对应A 1的接收信号，记为A 1 *，第 2个块信号的接收信号中对应B 1的接收信号，记为B 1 *。其中，A 1与B 1相同，由于信号在传输过程中受到干扰和噪声影响，A 1 *与A 1不同，B 1 *与B 1不同，A 1 *与B 1 *不同。
同理，将第k(k>1)个块信号中的第三类型符号分量和第二类型符号分量，记为A k，第k+1个块信号中与第k个块信号中的第三类型符号分量和第二类型符号分量相同的调制符号，记为B k，第k个块信号的接收信号中对应A k的接收信号，记为A k *，第k+1个块信号的接收信号中对应B k的接收信号，记为B k *。其中，A k与B k相同，由于信号在传输过程中受到干扰和噪声影响，A k *与A k不同，B k *与B k不同，A k *与B k *不同。
因此，在恢复出以块为单位的接收信号后，可以采用但不限于以下几种方式对块信号的接收信号进行解映射：
方式1：
网络设备根据A 1 *进行解映射，其中，A 1 *用于对A 1的解调；
网络设备根据A k *进行解映射，其中，A k *用于对A k的解调。
示例性地，在确定多个块信号的接收信号之后，块间以块的接收时间顺序，块内按发射端QAM调制符号的映射顺序依次将多个块信号的接收信号块上的对应QAM调制信号的接收信号解映射(并串转换)，其中，在解映射时，依次跳过B 1 *、B 2 *、…B k *…B L *。其中，L为一个时隙内块信号的接收信号的总数。进一步地，根据解映射后的对应QAM调制信号的接收信号进一步完成解调，获取接收比特信息。其中，根据A k *解映射后对应QAM调制信号的接收信号完成对A k的解调，即将A k *解映射得到的信号放置序列S rx中，A k *解映射得到的信号在S rx中的位置与A k对应的QAM调制符号在序列S tx中的位置相同，其中S rx表示解映射整个时隙的块信号得到的信号组成的序列，S tx表示整个时隙上待映射为块信号的所有QAM调制符号组成的序列。
方式2：
网络设备根据B 1 *进行解映射，其中，B 1 *用于对A 1的解调；
网络设备根据B k *进行解映射，其中，B k *用于对A k的解调。
示例性地，在确定多个块信号的接收信号之后，将第k个块上的信号更新A k *为B k *，然后块间以块的接收时间为顺序，块内按发射端QAM调制符号的映射顺序依次将多个块信号的接收信号块上的对应QAM调制信号的接收信号解映射(并串转换)，其中，在解映射时，依次跳过B 1 *、B 2 *、…B k *…B L *。其中，L为一个时隙内块信号的接收信号的总数。进一步地，根据解映射后的对应QAM调制信号的接收信号进一步完成解调，获取接收比特信息。其中，根据更新后的A k *解映射后对应QAM调制信号的接收信号完成对A k的解调，即将更新后的A k *解映射得到的信号放置序列S rx中，更新后的A k *解映射得到的信号在S rx中的位置与A k对应的QAM调制符号在序列Sqam中的位置相同，其中S rx表示解映射整个时隙的块信号得到的信号组成的序列，S tx表示整个时隙上待映射为块信号的所有QAM调制符号组成的序列。
因此，上述方式1和方式2表明仅需要解调一次相同的信息内容对应的调制符号的接收信号，不需要解调两次，进而可以提升解调效率。
方式3：
网络设备根据A 1 *与B 1 *的平均值进行解映射，其中，A 1 *与B 1 *的平均值用于对A1的解调；
网络设备根据A k *与B k *的平均值进行解映射，其中，A k *与B k *的平均值用于对A k的 解调。
可以理解的是，这里的平均值还可以替换为加权平均值等，本申请对此不作限定。
示例性地，在确定多个块信号的接收信号之后，以第k个块信号的接收信号为例，第k个块信号的接收信号上的A k *更新为：A k *与B k *的平均值，剩余步骤与方式1同，即块间以块的接收时间为顺序，块内按发射端QAM调制符号的映射顺序依次将多个块信号的接收信号块上的对应QAM调制信号的接收信号解映射(并串转换)，其中，在解映射时，依次跳过B 1 *、B 2 *、…B k *…B L *。其中，L为一个时隙内块信号的接收信号的总数。进一步地，根据解映射后的对应QAM调制信号的接收信号进一步完成解调，获取接收比特信息。其中，根据更新后的A k *解映射后对应QAM调制信号的接收信号完成对A k的解调，即将更新后的A k *解映射得到的信号放置序列S rx中，更新后的A k *解映射得到的信号在S rx中的位置与A k对应的QAM调制符号在序列S tx中的位置相同，其中S rx表示解映射整个时隙的块信号得到的信号组成的序列，S tx表示整个时隙上待映射为块信号的所有QAM调制符号组成的序列。
因此，上述方式3结合两部分对应相同的信息内容的调制符号的接收信号进行解调，可以提升解调的成功率。
方式4：在网络设备确定第1个块信号的接收信号的噪声功率低于第2个块信号的接收信号的噪声功率时，网络设备根据A 1 *进行解映射，在网络设备确定第1个块信号的接收信号的噪声功率高于第2个块信号的接收信号的噪声功率时，网络设备根据B 1 *进行解映射，如在解映射前，将A 1 *更新为B 1 *。其中，A 1 *和B 1 *用于对A 1的解调。
在网络设备确定第k个块信号的接收信号的噪声功率低于第k+1个块信号的接收信号的噪声功率时，网络设备根据A k *进行解映射，在网络设备确定第k个块信号的接收信号的噪声功率高于第k+1个块信号的接收信号的噪声功率时，网络设备根据B k *进行解映射，如在解映射前，将A k *更新为B k *。其中，A k *和B k *用于对A k的解调。
因此，上述方式4选择噪声功率较低的那部分调制符号的接收信号进行解调，可以提升解调的成功率。
需要说明的是，上述方式1至方式4还需同时更新第k个块信号对应A k *(k>＝1)的补偿因子(用于译码)。每一种的补偿因子更新均与解调方式对应。
方式1：不更新A k *的补偿因子，即保留均衡过程中基于A k *的补偿因子为最终的补偿因子。
方式2：将A k *的补偿因子更新为B k *对应的补偿因子。
方式3：将A k *的补偿因子更新为A k*与B k *的平均值对应的补偿因子。
方式4：在第k个块信号的接收信号的噪声功率低于第k+1个块信号的接收信号的噪声功率时，不更新A k *的补偿因子，在第k个块信号的接收信号的噪声功率高于第k+1个块信号的接收信号的噪声功率时，将A k *的补偿因子更新为B k *对应的补偿因子。
进一步地，网络设备可以采用与终端设备相同的方式确定传输块的大小，并基于传输块的大小确定冗余码、校验码等信息，并基于这些信息完成接收比特信息的译码。
采用本申请实施例提供的方法，可以实现第1个OFDM符号对应的接收窗相较于常规接收窗向后延迟，使得经历径P达到的第1个OFDM符号的信号均可以完整落入第1个接收窗内，降低第1个OFDM符号上的符号间干扰，当第1个OFDM符号是DMRS符号时，保障了基于DMRS估计的信道的估计精度，进而保证了解调性能。
此外，在一些实施例中，通过在第1个块信号上预留第四类型的符号分量，其中，第四类型的符号分量的结束调制符号与第1个块信号的最后一个调制符号相差m个调制符号，m的取值是根据NCP的持续时间确定的，m＞1，第四类型的符号分量的位置类似于复制前一个OFDM符号对应的第二类型符号分量的位置，其中，第四类型的符号分量不映射信号。采用上述方法使得在常规接收窗下，不丢失第1个OFDM符号经历径P到达的有用信息。另外，还可以在上一个时隙的最后一个OFDM符号对应第二类型符号分量的位置，不映射信号，以避免其对下一个时隙的第一个符号的影响。此时，所有符号可以有相同长度的头部分量和尾部分量，即此时第一类型符号分量的长度与第三类型符号分量的长度相同。
上述在第1个OFDM符号上预留第四类型的符号分量的方案还可以直接应用于非DMRS的信号，当第1个OFDM符号是DMRS信号时，可以通过设计特殊的DMRS序列，使得其在图11中黑色粗线框对应位置的信号功率较低，达到类似的目的。此外，在图11所示实施例中，接收窗0为常规的FFT接收窗。此外，接收窗0的起始点还可以位于dH0的最后的一个调制符号对应的采样点。或者，接收窗0的起始点还可以位于CP的最后的一个调制符号对应的采样点至dH0的最后的一个调制符号对应的采样点之间的任意一个采样点。
此外，可以理解的是，上述图5所示实施例提供的方法，也可以应用于网络设备向终端设备发送OFDM符号，这里仅以终端设备向网络设备发送OFDM符号为例进行说明。
图12示出了本申请实施例中所涉及的一种装置的可能的示例性框图，该装置1200包括：收发模块1210和处理模块1220，收发模块1210可以包括接收单元和发送单元。处理模块1220用于对装置1200的动作进行控制管理。收发模块1210用于支持装置1200与其他网络实体的通信。可选地，装置1200还可以包括存储单元，所述存储单元用于存储装置1200的程序代码和数据。
可选地，所述装置1200中各个模块可以是通过软件来实现。
可选地，处理模块1220可以是处理器或控制器，例如可以是通用中央处理器(central processing unit，CPU)，通用处理器，数字信号处理(digital signal processing，DSP)，专用集成电路(application specific integrated circuits，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。收发模块1210可以是通信接口、收发器或收发电路等，其中，该通信接口是统称，在具体实现中，该通信接口可以包括多个接口，存储单元可以是存储器。
当装置1200为终端设备或终端设备中的芯片时，装置1200中的处理模块1220可以支持装置1200执行上文中各方法示例中终端设备的动作，例如可以支持装置1200执行图5中的步骤510和步骤520。
收发模块1210可以支持装置1200与网络设备之间的通信，例如，收发模块1210可以支持装置1200执行图5中的步骤500，步骤530。
例如，可以如下：
在一种实现方式中，所述装置1200包括：
所述收发模块1210，用于获取第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；
所述处理模块1220，用于根据所述第一信息和所述第二信息确定多个块信号，每个所述块信号包括多个调制符号；对所述多个块信号中的每个块信号进行处理，得到与所述块信号对应的OFDM符号；
其中，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；
所述收发模块1210，用于发送所述OFDM符号。
在一种可能的设计中，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；
第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；
所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
在一种可能的设计中，所述第三类型符号分量的长度为第一预设值；
所述第二信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
在一种可能的设计中，所述第一信息指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
在一种可能的设计中，所述处理模块1220，用于在根据所述第一信息和所述第二信息确定多个块信号时，根据所述第一信息和第二信息确定传输块的大小，根据所述传输块的大小确定第三信息对应的多个块信号，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
在一种可能的设计中，所述处理模块1220，用于在根据所述第一信息和所述第二信息确定传输块的大小时，根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数；根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数；根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
在一种可能的设计中，所述处理模块1220，用于在根据第二资源单元数和所述第一资 源单元数确定所述传输块的大小时，根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；或者，根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
在一种可能的设计中，所述第一类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第二类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数；所述第三类型符号分量的长度的单位为IFFT后的样点数，或者绝对时间单位，或者指定的FFT点数下IFFT后的样点数。
应理解，根据本申请实施例的装置1200可对应于前述方法实施例中终端设备，并且装置1200中的各个模块的操作和/或功能分别为了实现前述方法实施例中终端设备的方法的相应步骤，因此也可以实现前述方法实施例中的有益效果，为了简洁，这里不作赘述。
当装置1200为网络设备或网络设备中的芯片时，装置1200中的处理模块1220可以支持装置1200执行上文中各方法示例中网络设备的动作。例如可以支持装置1200执行图5中的步骤540和步骤550。
收发模块1210可以支持装置1200与终端设备之间的通信，例如，收发模块1210可以支持装置1200执行图5中的步骤500和步骤530。
例如，可以如下：
在一种实现方式中，所述装置1200包括：
所述收发模块1210，用于向终端设备发送第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；
所述收发模块1210，用于从终端设备接收多个OFDM符号，所述多个OFDM符号与多个块信号一一对应，其中，每个所述块信号包括多个调制符号，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；
所述处理模块1220，用于确定所述多个OFDM符号中的每个OFDM符号对应的接收窗；根据每个OFDM符号对应的接收窗获取每个OFDM符号的解调信号。
在一种可能的设计中，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；
第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；
所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符 号。
在一种可能的设计中，所述处理模块1220，用于在确定所述多个OFDM符号中的每个OFDM符号对应的接收窗时，根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗，所述第1个OFDM符号对应的接收窗的起始点与所述第一类型符号分量的长度关联；根据所述循环前缀的持续时间确定第k个符号对应的接收窗。
其中，所述第1个OFDM符号对应的接收窗的结束点与第2个OFDM符号对应的接收窗的起始点的间隔为T1个采样点，所述第k个OFDM符号对应的接收窗的结束点与所述第k+1个OFDM符号对应的接收窗的起始点的间隔为T2个采样点，T1<T2，T1和T2为正整数。
在一种可能的设计中，所述处理模块1220，用于在根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗时，根据所述第一类型符号分量的长度确定至少一个候选接收窗；根据预设参数从所述至少一个候选接收窗中确定所述第1个OFDM符号对应的接收窗；其中，所述至少一个候选接收窗的起始点中的任意两个相邻的起始点的间隔为△T个采样点，△T为预设值，△T为正整数。
在一种可能的设计中，所述处理模块1220，用于根据每个OFDM符号的解调信号确定每个OFDM符号对应的块信号的接收信号；根据所述第一信息和所述第二信息对每个OFDM符号对应的块信号的接收信号进行解映射；根据解映射后的结果，获得接收比特信息。
在一种可能的设计中，所述处理模块1220，用于在根据所述第一信息和所述第二信息对每个OFDM符号对应的块信号的接收信号进行解映射时，根据第1个块信号的接收信号中对应所述第一类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射，所述网络设备根据第k个块信号的接收信号中对应所述第三类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行解映射；或者，根据第2个块信号的接收信号中对应第1个块信号中所述第一类型符号分量的接收信号，以及对应第1个块信号的所述第二类型符号分量的接收信号进行解映射，所述网络设备根据第k+1个块信号的接收信号中对应第k个块信号中所述第三类型符号分量的接收信号，以及对应第k个块信号的所述第二类型符号分量的接收信号进行解映射；或者，根据第1个块信号的接收信号中对应所述第一类型符号分量的接收信号与第2个块信号的接收信号中对应第1个块信号中所述第一类型符号分量的接收信号的平均值，以及所述第1个块信号的接收信号中对应所述第二类型符号分量的接收信号和所述第2个块信号的接收信号中对应所述第1个块信号的所述第二类型符号分量的接收信号的平均值进行解映射，以及第k个块信号的接收信号中对应所述第三类型符号分量的接收信号与第k+1个块信号的接收信号中对应所述第k个块信号中第三类型符号分量的接收信号的平均值，以及所述第k个块信号的接收信号中对应所述第二类型符号分量的接收信号和所述第k+1个块信号的接收信号中对应所述第k个块信号中第二类型符号分量的接收信号的平均值进行解映射。
在一种可能的设计中，所述处理模块1220，用于在根据所述第一信息和所述第二信息对每个符号对应的块信号的接收信号进行解映射时，在所述第k个块信号的接收信号的噪声功率低于所述第k+1个块信号的接收信号的噪声功率时，根据第k个块信号的接收信号中对应所述第三类型符号分量的接收信号和对应所述第二类型符号分量的接收信号进行 解映射；
在所述第k个块信号的接收信号的噪声功率高于所述第k+1个块信号的接收信号的噪声功率时，根据第k+1个块信号的接收信号中对应第k个块信号中所述第三类型符号分量的接收信号，以及对应第k个块信号的所述第二类型符号分量的接收信号进行解映射。
在一种可能的设计中，所述第五信息还包括所述第五辅基站在所述第一频段组合中可用的频段的标识，或所述网络设备在所述第一频段组合中选择的频段的标识。
应理解，根据本申请实施例的装置1200可对应于前述方法实施例中网络设备的方法，并且装置1200中的各个模块的操作和/或功能分别为了实现前述方法实施例中网络设备的方法的相应步骤，因此也可以实现前述方法实施例中的有益效果，为了简洁，这里不作赘述。
图13示出了根据本申请实施例的通信装置1300的示意性结构图。如图13所示，所述装置1300包括：处理器1301。
当装置1300为终端设备或终端设备中的芯片时，一种可能的实现方式中，当所述处理器1301用于调用接口执行以下动作：
获取第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；根据所述第一信息和所述第二信息确定多个块信号，每个所述块信号包括多个调制符号；对所述多个块信号中的每个块信号进行处理，得到与所述块信号对应的OFDM符号；发送所述OFDM符号。其中，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数。
应理解，所述装置1300还可用于执行前文实施例中终端设备侧的其他步骤和/或操作，为了简洁，这里不作赘述。
当装置1300为网络设备或网络设备中的芯片时，一种可能的实现方式中，当所述处理器1301用于调用接口执行以下动作：
向终端设备发送第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；从终端设备接收多个OFDM符号，所述多个OFDM符号与多个块信号一一对应，其中，每个所述块信号包括多个调制符号，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；确定所述多个OFDM符号中的每个OFDM符号对应的接收窗；根据每个OFDM符号对应的接收窗获取每个OFDM符号的解调信号。
应理解，所述装置1300还可用于执行前文实施例中网络设备侧的其他步骤和/或操作，为了简洁，这里不作赘述。
应理解，所述处理器1301可以调用接口执行上述收发动作，其中，调用的接口可以是 逻辑接口或物理接口，对此不作限定。可选地，物理接口可以通过收发器实现。可选地，所述装置1300还包括收发器1303。
可选地，所述装置1300还包括存储器1302，存储器1302中可以存储上述方法实施例中的程序代码，以便于处理器1301调用。
具体地，若所述装置1300包括处理器1301、存储器1302和收发器1303，则处理器1301、存储器1302和收发器1303之间通过内部连接通路互相通信，传递控制和/或数据信号。在一个可能的设计中，处理器1301、存储器1302和收发器1303可以通过芯片实现，处理器1301、存储器1302和收发器1303可以是在同一个芯片中实现，也可能分别在不同的芯片实现，或者其中任意两个功能组合在一个芯片中实现。该存储器1302可以存储程序代码，处理器1301调用存储器1302存储的程序代码，以实现装置1300的相应功能。
上述本申请实施例揭示的方法可以应用于处理器中，或者由处理器实现。处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序代码，当计算机程序代码被执行时，前述方法实施例中的方法被执行。
本申请实施例还提供一种计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行前述方法实施例中的方法。
本申请实施例还提供一种通信装置，该装置可以以芯片的产品形态存在，该装置的结构中包括处理器和接口电路，该处理器用于通过接收电路与其它装置通信，使得该装置执行前述方法实施例终端设备或网络设备执行的方法。
本申请实施例还提供一种无线通信系统，包括终端设备和网络设备，该终端设备和网络设备可以执行前述方法实施例中的方法。
应理解，在本申请实施例中，编号“第一”、“第二”…仅仅为了区分不同的对象，比如为了区分不同的参数信息或者消息，并不对本申请实施例的范围构成限制，本申请实施例并不限于此。
还应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。上述各个过程涉及的各种数字编号或序号仅为描述方便进行的区分，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖 在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (38)

  1. 一种通信方法，其特征在于，该方法包括：
    终端设备获取第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；
    所述终端设备根据所述第一信息和所述第二信息确定多个块信号，每个所述块信号包括多个调制符号；
    其中，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；
    所述终端设备对所述多个块信号中的每个块信号进行处理，得到与所述块信号对应的正交频分复用OFDM符号；
    所述终端设备发送所述OFDM符号。
  2. 如权利要求1所述的方法，其特征在于，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；
    第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；
    所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
  3. 如权利要求2所述的方法，其特征在于，所述第三类型符号分量的长度为第一预设值；
    所述第二信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述第一信息指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
  5. 如权利要求1-4任一项所述的方法，其特征在于，所述终端设备根据所述第一信息和所述第二信息确定多个块信号，包括：
    所述终端设备根据所述第一信息和第二信息确定传输块的大小；
    所述终端设备根据所述传输块的大小确定第三信息对应的多个块信号，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
  6. 如权利要求5所述的方法，其特征在于，所述终端设备根据所述第一信息和所述第二信息确定传输块的大小，包括：
    所述终端设备根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调 制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数；
    所述终端设备根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数；
    所述终端设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
  7. 如权利要求6所述的方法，其特征在于，所述终端设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，包括：
    所述终端设备根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；
    或者，所述终端设备根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
  8. 一种通信方法，其特征在于，该方法包括：
    网络设备向终端设备发送第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；
    所述网络设备从终端设备接收多个OFDM符号，所述多个OFDM符号与多个块信号一一对应，其中，每个所述块信号包括多个调制符号，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；
    所述网络设备确定所述多个OFDM符号中的每个OFDM符号对应的接收窗；
    所述网络设备根据每个OFDM符号对应的接收窗获取每个OFDM符号的解调信号。
  9. 如权利要求8所述的方法，其特征在于，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；
    第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；
    所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
  10. 如权利要求9所述的方法，其特征在于，所述网络设备确定所述多个OFDM符号中的每个OFDM符号对应的接收窗，包括：
    所述网络设备根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗，所述第1个OFDM符号对应的接收窗的起始点与所述第一类型符号分量的长度关联；
    所述网络设备根据所述循环前缀的持续时间确定第k个OFDM符号对应的接收窗；
    其中，所述第1个OFDM符号对应的接收窗的结束点与第2个OFDM符号对应的接收窗的起始点的间隔为T1个采样点，所述第k个OFDM符号对应的接收窗的结束点与所述第k+1个OFDM符号对应的接收窗的起始点的间隔为T2个采样点，T1<T2，T1和T2为正整数。
  11. 如权利要求10所述的方法，其特征在于，所述网络设备根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗，包括：
    所述网络设备根据所述第一类型符号分量的长度确定至少一个候选接收窗；
    所述网络设备根据预设参数从所述至少一个候选接收窗中确定所述第1个OFDM符号对应的接收窗；
    其中，所述至少一个候选接收窗的起始点中的任意两个相邻起始点的间隔为△T个采样点，△T为预设值且为正整数。
  12. 如权利要求8-11任一项所述的方法，其特征在于，还包括：
    所述网络设备根据每个OFDM符号的解调信号确定每个OFDM符号对应的块信号的接收信号；
    所述网络设备根据所述第一信息和所述第二信息对OFDM符号对应的块信号的接收信号进行解映射；
    所述网络设备根据解映射后的结果，获得接收比特信息。
  13. 如权利要求8-11任一项所述的方法，其特征在于，还包括：
    所述网络设备根据所述第一信息和第二信息确定传输块的大小；
    所述网络设备根据所述传输块的大小译码所述接收比特信息，获得第三信息，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
  14. 如权利要求13所述的方法，其特征在于，所述网络设备根据所述第一信息和所述第二信息确定传输块的大小，包括：
    所述网络设备根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数；
    所述网络设备根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数；
    所述网络设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
  15. 如权利要求14所述的方法，其特征在于，所述网络设备根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，包括：
    所述网络设备根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；
    或者，所述网络设备根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
  16. 如权利要求8-15任一项所述的方法，其特征在于，所述第三类型符号分量的长度 为第一预设值；
    所述第一信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
  17. 如权利要求8-16任一项所述的方法，其特征在于，所述第一信息还指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
  18. 一种通信装置，其特征在于，所述装置为终端设备或终端设备内的芯片，该装置包括：收发单元和处理单元；
    所述收发单元，用于获取第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；
    所述处理单元，用于根据所述第一信息和所述第二信息确定多个块信号，每个所述块信号包括多个调制符号；其中，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；对所述多个块信号中的每个块信号进行处理，得到与所述块信号对应的正交频分复用OFDM符号；
    所述收发单元，用于发送所述OFDM符号。
  19. 如权利要求18所述的装置，其特征在于，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；
    第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；
    所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
  20. 如权利要求19所述的装置，其特征在于，所述第三类型符号分量的长度为第一预设值；
    所述第二信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
  21. 如权利要求18-20任一项所述的装置，其特征在于，所述第一信息指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
  22. 如权利要求18-21任一项所述的装置，其特征在于，所述处理单元，用于在根据所述第一信息和所述第二信息确定多个块信号时，根据所述第一信息和第二信息确定传输块的大小；根据所述传输块的大小确定第三信息对应的多个块信号，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
  23. 如权利要求22所述的装置，其特征在于，所述处理单元，用于在根据所述第一信息和所述第二信息确定传输块的大小时，根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型 符号分量包括的调制符号数；
    根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数；
    根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
  24. 如权利要求23所述的装置，其特征在于，所述处理单元，用于在根据第二资源单元数和所述第一资源单元数确定所述传输块的大小时，根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；或者，根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
  25. 一种通信装置，其特征在于，所述装置为网络设备或网络设备内的芯片，该装置包括：收发单元和处理单元；
    所述收发单元，用于向终端设备发送第一信息和第二信息，所述第一信息用于确定第一类型符号分量的长度，所述第二信息用于确定第二类型符号分量的长度和第三类型符号分量的长度中的至少一个，所述第一类型符号分量的长度大于所述第三类型符号分量的长度；从终端设备接收多个OFDM符号，所述多个OFDM符号与多个块信号一一对应，其中，每个所述块信号包括多个调制符号，所述第1个块信号包括所述第一类型符号分量和所述第二类型符号分量；第2个块信号包括与所述第1个块信号中所述第一类型符号分量和所述第二类型符号分量相同的调制符号；第k+1个块信号包括与第k个块信号中所述第二类型符号分量和所述第三类型符号分量相同的调制符号，k≥2，k为整数；
    所述处理单元，用于确定所述多个OFDM符号中的每个OFDM符号对应的接收窗；根据每个OFDM符号对应的接收窗获取每个OFDM符号的解调信号。
  26. 如权利要求25所述的装置，其特征在于，所述第一类型符号分量为所述第1个块信号中的前X个调制符号；在所述第2个块信号中，与所述第1个块信号中所述第一类型符号分量相同的调制符号的起始调制符号与所述第2个块信号的最后一个调制符号相差m-1个调制符号，其中，m的取值是根据循环前缀的持续时间确定的，m＞1，X＞1；
    第k-1个块信号中的所述第二类型符号分量为所述第k-1个块信号中的最后Y个调制符号，在所述第k块信号中，与所述第k-1个块信号中所述第二类型符号分量相同的调制符号的结束调制符号与所述第k块信号的最后一个调制符号相差m个调制符号，Y≥1；
    所述第k块信号中的所述第三类型符号分量为所述第k块信号中的前Z个调制符号，Z＜X，Z≥1，在所述第k+1个块信号中，与所述第k个块信号中所述第三类型符号分量相同的调制符号的起始调制符号与所述第k+1个符号的最后一个调制符号相差m-1个调制符号。
  27. 如权利要求26所述的装置，其特征在于，所述处理单元，用于在确定所述多个OFDM符号中的每个OFDM符号对应的接收窗时，根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗，所述第1个OFDM符号对应的接收窗的起始点与所述第一类型符号分量的长度关联；根据所述循环前缀的持续时间确定第k个OFDM符号对应的接收窗；
    其中，所述第1个OFDM符号对应的接收窗的结束点与第2个OFDM符号对应的接 收窗的起始点的间隔为T1个采样点，所述第k个OFDM符号对应的接收窗的结束点与所述第k+1个OFDM符号对应的接收窗的起始点的间隔为T2个采样点，T1<T2，T1和T2为正整数。
  28. 如权利要求27所述的装置，其特征在于，所述处理单元，用于在根据所述第一类型符号分量的长度确定所述多个OFDM符号中的第1个OFDM符号对应的接收窗时，根据所述第一类型符号分量的长度确定至少一个候选接收窗；根据预设参数从所述至少一个候选接收窗中确定所述第1个OFDM符号对应的接收窗；
    其中，所述至少一个候选接收窗的起始点中的任意两个相邻起始点的间隔为△T个采样点，△T为预设值且为正整数。
  29. 如权利要求25-28任一项所述的装置，其特征在于，所述处理单元，还用于根据每个OFDM符号的解调信号确定每个OFDM符号对应的块信号的接收信号；根据所述第一信息和所述第二信息对OFDM符号对应的块信号的接收信号进行解映射；根据解映射后的结果，获得接收比特信息。
  30. 如权利要求25-28任一项所述的装置，其特征在于，所述处理单元，还用于根据所述第一信息和第二信息确定传输块的大小；根据所述传输块的大小译码所述接收比特信息，获得第三信息，所述第三信息为所述终端设备需要发送给所述网络设备的信息。
  31. 如权利要求30所述的装置，其特征在于，所述处理单元，用于在根据所述第一信息和所述第二信息确定传输块的大小时，根据所述第一类型符号分量的长度确定所述第一类型符号分量包括的调制符号数，以及根据所述第二类型符号分量的长度确定所述第二类型符号分量包括的调制符号数，以及根据所述第三类型符号分量的长度确定所述第三类型符号分量包括的调制符号数；
    根据所述第一类型符号分量包括的调制符号数、所述第二类型符号分量包括的调制符号数和所述第三类型符号分量包括的调制符号数确定第一资源单元数，所述第一资源单元数指示一个时隙内不同块信号间的相同调制符号对应的资源单元数；
    根据第二资源单元数和所述第一资源单元数确定所述传输块的大小，所述第二资源单元数为一个时隙内用于传输所述第三信息的资源单元数。
  32. 如权利要求31所述的装置，其特征在于，所述处理单元，用于在根据第二资源单元数和所述第一资源单元数确定所述传输块的大小时，根据第二资源单元数与所述第一资源单元数的差值确定所述传输块的大小；
    或者，根据第二资源单元数和第一量化值的差值确定所述传输块的大小，所述第一量化值是所述第一资源单元数按照预设间隔量化后得到的。
  33. 如权利要求25-32任一项所述的装置，其特征在于，所述第三类型符号分量的长度为第一预设值；
    所述第一信息指示所述第二类型符号分量的长度和所述循环前缀的长度之和。
  34. 如权利要求25-33任一项所述的装置，其特征在于，所述第一信息还指示所述第一类型符号分量的长度与所述第三类型符号分量的长度的差值。
  35. 一种通信装置，其特征在于，包括用于执行如权利要求1至17中的任一项所述方法的模块。
  36. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信 号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至17中任一项所述的方法。
  37. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至17中任一项所述的方法。
  38. 一种通信系统，其特征在于，所述系统包括终端设备和网络设备，所述终端设备用于实现如权利要求1至7中任一项所述的方法，所述网络设备用于实现如权利要求8至17中任一项所述的方法。
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US20150256376A1 (en) * 2014-03-09 2015-09-10 Allen LeRoy Limberg Iterative-diversity COFDM broadcasting with improved shaping gain
CN107026724A (zh) * 2016-02-02 2017-08-08 北京三星通信技术研究有限公司 一种信号发送与接收的方法和用户设备
CN112217753A (zh) * 2019-07-12 2021-01-12 成都华为技术有限公司 符号处理的方法与装置
WO2021081831A1 (zh) * 2019-10-30 2021-05-06 华为技术有限公司 符号处理的方法与装置

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US20150256376A1 (en) * 2014-03-09 2015-09-10 Allen LeRoy Limberg Iterative-diversity COFDM broadcasting with improved shaping gain
CN107026724A (zh) * 2016-02-02 2017-08-08 北京三星通信技术研究有限公司 一种信号发送与接收的方法和用户设备
CN112217753A (zh) * 2019-07-12 2021-01-12 成都华为技术有限公司 符号处理的方法与装置
WO2021081831A1 (zh) * 2019-10-30 2021-05-06 华为技术有限公司 符号处理的方法与装置

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