WO2023011247A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2023011247A1
WO2023011247A1 PCT/CN2022/107848 CN2022107848W WO2023011247A1 WO 2023011247 A1 WO2023011247 A1 WO 2023011247A1 CN 2022107848 W CN2022107848 W CN 2022107848W WO 2023011247 A1 WO2023011247 A1 WO 2023011247A1
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sequence
resource
channel
rbs
length
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PCT/CN2022/107848
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English (en)
Chinese (zh)
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刘荣宽
张佳胤
石蒙
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华为技术有限公司
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Publication of WO2023011247A1 publication Critical patent/WO2023011247A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

Definitions

  • the present application relates to the field of wireless technologies, and in particular to a communication method and a communication device.
  • a signal transmitting device can transmit a sequence on a wireless channel, so as to carry information to be sent through the sequence.
  • the signal receiving device can receive the sequence on the wireless channel, and analyze the received sequence to obtain the information carried by the sequence.
  • the wireless channel may include a data channel, a control channel, and the like.
  • the current sequence transmitted on the wireless channel is constructed based on a relatively small bandwidth resource (such as a resource block (RB)) in a low-frequency communication system.
  • a relatively small bandwidth resource such as a resource block (RB)
  • the available bandwidth resources for example, multiple RBs
  • the present application provides a communication method and a communication device, which are used to provide a sequence construction method on large-bandwidth resources, and when the number of RBs used to carry the first resource of the sequence is large, the cyclic extension method is used to reduce the implementation Complexity and save overhead, improve communication efficiency.
  • the first aspect of the present application provides a communication method, the method may be performed by a communication device, or the method may also be performed by a component of the communication device (such as a processor, a chip, or a chip system, etc.), or the method may also be performed by a communication device
  • a component of the communication device such as a processor, a chip, or a chip system, etc.
  • the logic module or software implementation for realizing all or part of the functions of the communication device will be described by taking the communication method executed by the sending device as an example.
  • the communication device generates a first sequence, wherein the sequence length of the first sequence is positively correlated with the number of RBs of the first resource occupied by the first channel, and the number of RBs of the first resource is greater than the number of RBs of the first resource
  • the first sequence is a sequence obtained by performing cyclic extension on the second sequence, and the first threshold is greater than or equal to 1; the communication device sends the first sequence, and the first sequence is carried on the first channel.
  • the sequence length of the first sequence is positively correlated with the number of resource blocks RB of the first resource occupied by the first channel, and in When the number of RBs of the first resource is greater than the first threshold, the first sequence is a sequence obtained by performing cyclic extension on the second sequence.
  • the first sequence is transmitted on the first channel based on the first resource, and the first The number of RBs of the resource is greater than the first threshold and the first threshold is greater than or equal to 1, that is, the first sequence is transmitted on the first channel based on a larger bandwidth resource, and the first sequence is cycled for the second sequence
  • the extended sequence Therefore, a sequence construction method on large-bandwidth resources is provided, and when the number of RBs used to carry the sequence is large, the cyclic extension method reduces implementation complexity and saves overhead, improving communication efficiency.
  • the communication device used to generate the first sequence may also be referred to as a sending device, and specifically may be a network device or a terminal device.
  • the generation sequence can also be expressed as a generation sequence, a construction sequence, and the like.
  • the second aspect of the present application provides a communication method, the method may be performed by a communication device, or the method may also be performed by a component of the communication device (such as a processor, a chip, or a chip system, etc.), or the method may also be performed by a communication device
  • a component of the communication device such as a processor, a chip, or a chip system, etc.
  • the logic module or software implementation for realizing all or part of the functions of the communication device will be described by taking the communication method executed by the sending device as an example.
  • the communication device receives a first sequence, and the first sequence is carried on the first channel; wherein, the sequence length of the first sequence is positively correlated with the number of resource blocks RB of the first resource occupied by the first channel , and when the number of RBs of the first resource is greater than the first threshold, the first sequence is a sequence obtained by performing cyclic extension on the second sequence, and the first threshold is greater than or equal to 1; the communication device parses the first sequence.
  • the sequence length of the first sequence is positively correlated with the number of resource blocks RB of the first resource occupied by the first channel, and in When the number of RBs of the first resource is greater than the first threshold, the first sequence is a sequence obtained by performing cyclic extension on the second sequence.
  • the first sequence is transmitted on the first channel based on the first resource, and the first The number of RBs of the resource is greater than the first threshold and the first threshold is greater than or equal to 1, that is, the first sequence is transmitted on the first channel based on a larger bandwidth resource, and the first sequence is cycled for the second sequence
  • the extended sequence Therefore, a sequence construction method on large-bandwidth resources is provided, and when the number of RBs used to carry the sequence is large, the cyclic extension method reduces implementation complexity and saves overhead, improving communication efficiency.
  • the communication device for parsing the first sequence may also be referred to as a receiving device, and specifically may be a network device or a terminal device.
  • the sequence obtained by performing cyclic extension on the first sequence for the second sequence satisfies:
  • P is the first sequence
  • L is the length of the first sequence
  • S is the second sequence
  • A is the length of the second sequence
  • A is less than L
  • mod indicates a remainder operation
  • n is a sequence index
  • the first sequence may perform cyclic extension on the second sequence based on this implementation manner to obtain the first sequence.
  • a specific implementation manner of constructing the first sequence is provided.
  • the second sequence is determined based on the number of subcarriers included in the second resource, and the second resource is used to bear the second sequence.
  • the length of the second sequence is determined by the number of subcarriers contained in the second resource used to carry the second sequence, and specifically the length of the second sequence is positively correlated with the number of subcarriers. That is, the larger the number of subcarriers included in the second resource, the larger the length value of the second sequence; conversely, the smaller the number of subcarriers included in the second resource, the smaller the length value of the second sequence.
  • the length of the second sequence satisfies:
  • A is the length of the second sequence
  • W is the number of RBs of the second resource, is the number of subcarriers occupied by one RB.
  • the first sequence is based on the number of subcarriers contained in the first resource determined by the number.
  • the first sequence constructed based on relatively small bandwidth resources is transmitted on the first channel.
  • the length of the first sequence is determined by the number of subcarriers contained in the first resource used to carry the first sequence, and specifically the length of the first sequence is positively correlated with the number of subcarriers. That is, the more subcarriers included in the first resource, the larger the length of the first sequence; conversely, the smaller the number of subcarriers included in the first resource, the smaller the length of the first sequence.
  • the length of the first sequence is N RB is the number of RBs of the first resource, is the number of subcarriers occupied by one RB.
  • the second sequence is Low PAPR sequence type 1 (Low PAPR sequence type 1), and the Low PAPR sequence type 1 satisfies:
  • r is the second sequence, is the base sequence of the Low PAPR sequence type 1 sequence, ⁇ represents the cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.
  • the second sequence may be a peak to average power ratio (PAPR) sequence, specifically a Low PAPR sequence type 1 sequence.
  • PAPR peak to average power ratio
  • the second sequence used for cyclic extension to obtain the first sequence is a low PAPR sequence, so that the first sequence has low PAPR performance and can meet coverage requirements.
  • the ⁇ satisfies:
  • the parameter ⁇ in the Low PAPR sequence type 1 sequence is associated with the index value of the second resource used to carry the second sequence, specifically the index value is a frequency domain index value.
  • the parameter ⁇ in different Low PAPR sequence type 1 sequences can be determined based on different frequency domain index values of the second resources, and different second sequences can be constructed based on different frequency domain index values of the second resources, and can be obtained by Multiple combinations of different second sequences implement indication of multi-stream multiplexing and/or multi-user multiplexing.
  • the cyclic shift parameter includes a randomly generated parameter; or, the cyclic shift parameter is associated with an index value of the second resource.
  • the cyclic shift parameter may be determined based on a randomly generated parameter or based on an index value of the second resource, so as to realize determination of multiple cyclic shift parameters.
  • Different second sequences can be constructed based on different cyclic shift parameters, and multiple combinations of different second sequences can be used to indicate multi-stream multiplexing and/or multi-user multiplexing.
  • the randomly generated parameters may include quadrature phase shift keying (quadrature phase shift keying, QPSK) symbols, binary phase shift keying (binary phase shift keying, BPSK) symbols, or other parameters.
  • quadrature phase shift keying quadrature phase shift keying, QPSK
  • binary phase shift keying binary phase shift keying, BPSK
  • different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same data stream; and/or, the cyclic shift parameter Different values of are used to indicate that the second sequence is a sequence corresponding to the same communication device.
  • the second sequence is a Low PAPR sequence type 1 sequence
  • the cyclic shift parameters in the Low PAPR sequence type 1 sequence can have a variety of different values
  • different cyclic shift parameters can construct different The second sequence, and different first sequences can be obtained through multiple combinations of different second sequences, and multi-stream multiplexing and/or multi-user multiplexing can be realized through different first sequences.
  • the second sequence is Low PAPR sequence type 2
  • the Low PAPR sequence type 2 satisfies:
  • r is the second sequence, It is the base sequence of Low PAPR sequence type 2 sequence.
  • the second sequence may be a peak to average power ratio (PAPR) sequence, specifically a Low PAPR sequence type 2 sequence.
  • PAPR peak to average power ratio
  • the second sequence used for cyclic extension to obtain the first sequence is a low PAPR sequence, so that the first sequence has low PAPR performance and can meet coverage requirements.
  • the value of the first threshold is 9 or 10.
  • the first threshold may be a value greater than 1, specifically the value of the first threshold may be 9 or 10. Therefore, when the number of RBs of the first resource is greater than 9 or 10, the first sequence is a sequence obtained by performing cyclic extension on the second sequence.
  • the method further includes: sending first indication information, where the first indication information is used to indicate that transform precoding (transform precoding) of the first channel is enabled; or expressed as , the first indication information is used to indicate that when the data is carried on the first channel where the first sequence is located, the data should be converted and precoded.
  • the sending device may also send first indication information to indicate that switching precoding of the first channel is enabled, where the first channel is enabled.
  • the channel conversion precoding instructs to perform discrete Fourier transform (discrete fourier transform, DFT) transform on the data carried on the first channel to obtain frequency domain data.
  • the method further includes: receiving first indication information, where the first indication information is used to indicate enabling switching precoding of the first channel; or expressed as, the first indication The information is used to indicate that when data is carried on the first channel where the first sequence is located, conversion precoding is performed on the data.
  • the receiving device may also receive first indication information to indicate that the switching precoding of the first channel is enabled, where the first The channel conversion precoding instructs to perform discrete Fourier transform (discrete fourier transform, DFT) transform on the data carried on the first channel to obtain frequency domain data.
  • DFT discrete Fourier transform
  • the first channel is a physical uplink control channel (physical uplink control channel, PUCCH), wherein the first sequence is a sequence of format 0 (PUCCH format 0) carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of format 1 (PUCCH format 1) carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of demodulation reference signal DMRS in format 1 (PUCCH format 1) carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of DMRS in format 4 (PUCCH format 4) carried in the PUCCH; or,
  • the first channel is a physical downlink shared channel (physical downlink shared channel, PDSCH), wherein the first sequence is a sequence of DMRS carried in the PDSCH; or,
  • the first channel is a physical uplink shared channel (PUSCH), wherein the first sequence is a sequence of DMRS carried in the PUSCH.
  • PUSCH physical uplink shared channel
  • sequence length of the first sequence is positively correlated with the number of RBs of the first resource occupied by the first channel, indicating that the more the number of RBs of the first resource occupied by the first channel, the more the number of RBs of the first resource occupied by the first sequence is.
  • the sequence length of the first sequence may be proportional to the number of RBs of the first resource occupied by the first channel.
  • the coefficients of the proportional relationship may be different.
  • the coefficient of the proportional relationship may be less than 1, such as 0.1, 0.3, 0.5 or other values, which are not limited here.
  • the coefficient of the proportional relationship may be equal to 1.
  • the number of RBs of the first resource is a positive integer multiple of 2 or the number of RBs of the first resource is a positive integer multiple of 3 or the first The number of RBs of the resource is a positive integer multiple of 5 or the number of RBs of the first resource is 1.
  • the first sequence is carried on the first channel in a modulation mode of a single carrier waveform.
  • the first sequence can be specifically carried on the first channel through the modulation mode of single carrier waveform.
  • the modulation mode of multi-carrier waveform there is a problem of larger PAPR, and the use of single carrier
  • the waveform modulation method can reduce PAPR, and provide greater output power and higher power amplifier efficiency, thereby achieving the purpose of improving coverage and reducing energy consumption.
  • the modulation method of the single carrier waveform is discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT) -s-OFDM).
  • DFT discrete Fourier transform-spread-orthogonal frequency division multiplexing
  • the modulation mode of the single-carrier waveform may also be a single-carrier waveform such as single carrier-QAM (single carrier-QAM, quadrature amplitude modulation, SC-QAM).
  • single carrier-QAM single carrier-QAM, quadrature amplitude modulation, SC-QAM.
  • the third aspect of the present application provides a communication device, including a processing unit and a transceiver unit;
  • the processing unit is configured to generate a first sequence, wherein the sequence length of the first sequence is positively correlated with the number of resource blocks RB of the first resource occupied by the first channel, and when the number of RB of the first resource is greater than
  • the first sequence is a sequence obtained by performing cyclic extension on the second sequence, and the first threshold is greater than or equal to 1;
  • the transceiver unit is used to send the first sequence, and the first sequence is carried on the first channel.
  • the fourth aspect of the present application provides a communication device, including a processing unit and a transceiver unit;
  • the transceiver unit is configured to receive a first sequence, the first sequence is carried on the first channel; wherein, the sequence length of the first sequence is positively correlated with the number of resource blocks RB of the first resource occupied by the first channel, And when the number of RBs of the first resource is greater than the first threshold, the first sequence is a sequence obtained by performing cyclic extension on the second sequence, and the first threshold is greater than or equal to 1;
  • the processing unit is configured to parse the first sequence.
  • the sequence obtained by performing cyclic extension on the first sequence to the second sequence satisfies:
  • P is the first sequence
  • L is the length of the first sequence
  • S is the second sequence
  • A is the length of the second sequence
  • A is less than L
  • mod indicates a remainder operation
  • n is a sequence index
  • the second sequence is determined based on the number of subcarriers included in the second resource, and the second resource is used to bear the second sequence.
  • the length of the second sequence satisfies:
  • A is the length of the second sequence
  • W is the number of RBs of the second resource, is the number of subcarriers occupied by one RB.
  • the first sequence is based on the number of subcarriers contained in the first resource determined by the number.
  • the length of the first sequence is N RB is the number of RBs of the first resource, is the number of subcarriers occupied by one RB.
  • the second sequence is Low PAPR sequence type 1
  • the Low PAPR sequence type 1 satisfies:
  • r is the second sequence, is the base sequence of the Low PAPR sequence type 1 sequence, ⁇ represents the cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.
  • the ⁇ satisfies:
  • the cyclic shift parameters include randomly generated parameters; or,
  • the cyclic shift parameter is associated with the index value of the second resource.
  • Different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same data stream.
  • Different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same communication device.
  • the second sequence is Low PAPR sequence type 2
  • the Low PAPR sequence type 2 satisfies:
  • r is the second sequence, It is the base sequence of Low PAPR sequence type 2 sequence.
  • the value of the first threshold is 9 or 10.
  • the transceiver unit is further configured to:
  • the transceiver unit is further configured to:
  • Receive first indication information where the first indication information is used to indicate enabling switch precoding of the first channel.
  • the first channel is a physical uplink control channel PUCCH, where the first sequence is a format 0 sequence carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, where the first sequence is a format 1 sequence carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of a demodulation reference signal DMRS in format 1 carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of DMRS in format 4 carried in the PUCCH; or,
  • the first channel is a physical downlink data channel PDSCH, wherein the first sequence is a sequence of DMRS carried in the PDSCH; or,
  • the first channel is a physical uplink data channel PUSCH, wherein the first sequence is a sequence of DMRS carried in the PUSCH.
  • the number of RBs of the first resource is a positive integer multiple of 2 or the number of RBs of the first resource is a positive integer multiple of 3 or the first The number of RBs of the resource is a positive integer multiple of 5 or the number of RBs of the first resource is 1.
  • the first sequence is carried on the first channel in a single carrier waveform modulation manner.
  • the modulation mode of the single carrier waveform is DFT-s-OFDM.
  • the fifth aspect of the embodiment of the present application provides a communication device, including at least one logic circuit and an input and output interface;
  • the input and output interface is used to output the first sequence
  • the logic circuit is configured to execute the method described in the foregoing first aspect or any possible implementation manner of the first aspect.
  • the sixth aspect of the embodiment of the present application provides a communication device, including at least one logic circuit and an input and output interface;
  • the input and output interface is used to input the first sequence
  • the logic circuit is configured to execute the method described in the foregoing second aspect or any possible implementation manner of the second aspect.
  • the seventh aspect of the embodiment of the present application provides a computer-readable storage medium that stores one or more computer-executable instructions.
  • the processor executes any one of the above-mentioned first aspect or the first aspect. or, when the computer-executed instructions are executed by the processor, the processor executes the method described in the second aspect or any possible implementation manner of the second aspect.
  • the eighth aspect of the embodiment of the present application provides a computer program product (or computer program) storing one or more computers.
  • the processor executes the above-mentioned first aspect or the first aspect The method in any possible implementation manner; or, when the computer program product is executed by the processor, the processor executes the method in the second aspect above or in any possible implementation manner of the second aspect.
  • a ninth aspect of the embodiments of the present application provides a system-on-a-chip, where the system-on-a-chip includes at least one processor, configured to support a communication device to implement the functions involved in the above-mentioned first aspect or any possible implementation manner of the first aspect.
  • system-on-a-chip may further include a memory, and the memory is used for storing necessary program instructions and data of the communication device.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor.
  • the tenth aspect of the embodiment of the present application provides a communication system, the communication system includes the communication device of the third aspect and the communication device of the fourth aspect; or, the communication system includes the communication device of the fifth aspect and the sixth aspect communication device.
  • the technical effect brought by any one of the design methods in the third aspect to the tenth aspect can refer to the technical effects brought by the different implementation methods in the above-mentioned first aspect and the second aspect, and will not be repeated here.
  • the sequence length of the first sequence is related to the number of resource blocks RB of the first resource occupied by the first channel Positive correlation, and when the number of RBs of the first resource is greater than the first threshold, the first sequence is a sequence obtained by performing cyclic extension on the second sequence.
  • the first sequence is transmitted on the first channel based on the first resource, and the first The number of RBs of the resource is greater than the first threshold and the first threshold is greater than or equal to 1, that is, the first sequence is transmitted on the first channel based on a larger bandwidth resource, and the first sequence is cycled for the second sequence
  • the extended sequence Therefore, a sequence construction method on large-bandwidth resources is provided, and when the number of RBs used to carry the sequence is large, the cyclic extension method reduces implementation complexity and saves overhead, improving communication efficiency.
  • Fig. 1 is a schematic diagram of the communication system provided by the present application.
  • FIG. 2 is a schematic diagram of a terminal device provided by the present application.
  • FIG. 3 is a schematic diagram of a network device provided by the present application.
  • FIG. 4 is a schematic diagram of the communication method provided by the present application.
  • FIG. 5 is a schematic diagram of a communication device provided by the present application.
  • FIG. 6 is another schematic diagram of the communication device provided by the present application.
  • Fig. 7 is another schematic diagram of the communication device provided by the present application.
  • Terminal equipment it can be a wireless terminal equipment that can receive network equipment scheduling and instruction information, and the wireless terminal equipment can provide voice and/or data connectivity to users device, or a handheld device with a wireless connection, or other processing device connected to a wireless modem.
  • the terminal can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone, mobile phone) ), computers and data cards, such as portable, pocket, hand-held, built-in computer or vehicle-mounted mobile devices, which exchange speech and/or data with the radio access network.
  • RAN radio access network
  • PCS personal communication service
  • cordless telephone session initiation protocol
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PDA tablet computer
  • Pad tablet computer with wireless transceiver function and other equipment.
  • the wireless terminal equipment may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (subscriber station, SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc.
  • the terminal device may also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (PLMN).
  • PLMN public land mobile network
  • terminals involved in this application can be widely used in various scenarios, for example, device to device (device to device, D2D), vehicle to everything (vehicle to everything, V2X) communication, machine type communication (machine-type communication, MTC), thing Internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc.
  • Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal.
  • Network device it can be a device in a wireless network, for example, a network device can be a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network, and can also be called a base station .
  • RAN radio access network
  • some examples of RAN equipment are: generation Node B (generation Node B, gNodeB), transmission reception point (transmission reception point, TRP), evolved Node B (evolved Node B, eNB) and wireless network in the 5G communication system.
  • the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.
  • the network device may also include a core network device, and the core network device includes, for example, an access and mobility management function (access and mobility management function, AMF), a user plane function (user plane function, UPF) or a session management function (session management function, SMF) etc.
  • AMF access and mobility management function
  • UPF user plane function
  • SMF session management function
  • the network equipment may be other devices that provide wireless communication functions for terminal equipment.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • the device for realizing the function of the network device may be a network device, or a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device.
  • the technical solution provided by the embodiment of the present application the technical solution provided by the embodiment of the present application is described by taking the network device as an example for realizing the function of the network device.
  • Configuration means that the base station or the server sends configuration information or values of some parameters to the terminal through messages or signaling, so that the terminal can determine communication parameters or resources during transmission according to these values or information.
  • Pre-configuration is similar to configuration. It can be a way for the base station or server to send parameter information or values to the terminal; it can also be to define the corresponding parameters or parameter values, or to write the relevant parameters or values to the terminal in advance way in the device. This application does not limit this. Furthermore, these values and parameters can be changed or updated.
  • system and “network” in this application may be used interchangeably.
  • “At least one” means one or more, and “plurality” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship.
  • “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items. For example "at least one of A, B and C” includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, ordinal numerals such as “first” and “second” mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects degree.
  • the technical solution of the embodiment of the present application is applicable to a communication system integrating terrestrial communication and satellite communication, and the communication system may also be called a non-terrestrial network (non-terrestrial network, NTN) communication system.
  • the ground communication system may be, for example, a long term evolution (long term evolution, LTE) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a 5G communication system or a new radio (new radio, NR) system, or a 5G communication system
  • LTE long term evolution
  • UMTS universal mobile telecommunications system
  • 5G communication system or a new radio (new radio, NR) system new radio
  • the communication system and the like to be developed in the next step are not limited here.
  • FIG. 1 is a schematic structural diagram of a communication system 1000 applied in an embodiment of the present application.
  • the communication system includes a radio access network 100 and a core network 200 , and optionally, the communication system 1000 may also include the Internet 300 .
  • the radio access network 100 may include at least one radio access network device (such as 110a and 110b in FIG. 1 ), and may also include at least one terminal (such as 120a-120j in FIG. 1 ).
  • the radio access network device may be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), or a relay node or a donor node.
  • radio access network device in this application may also be realized by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform).
  • a platform such as a cloud platform.
  • the embodiment of the present application does not limit the specific technology and specific equipment form adopted by the radio access network equipment.
  • a base station is used as an example of a radio access network device for description below.
  • the base station and the terminal may be fixed or mobile.
  • Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air.
  • the embodiments of the present application do not limit the application scenarios of the base station and the terminal.
  • the helicopter or UAV 120i in FIG. base station for base station 110a, 120i is a terminal, that is, communication between 110a and 120i is performed through a wireless air interface protocol.
  • communication between 110a and 120i may also be performed through an interface protocol between base stations.
  • 120i compared to 110a, 120i is also a base station. Therefore, both the base station and the terminal can be collectively referred to as a communication device, 110a and 110b in FIG. 1 can be referred to as a communication device with a base station function, and 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.
  • the communication between the base station and the terminal, between the base station and the base station, and between the terminal and the terminal can be carried out through the licensed spectrum, the communication can also be carried out through the unlicensed spectrum, and the communication can also be carried out through the licensed spectrum and the unlicensed spectrum at the same time; Communications may be performed on frequency spectrums below megahertz (gigahertz, GHz), or communications may be performed on frequency spectrums above 6 GHz, or communications may be performed using both frequency spectrums below 6 GHz and frequency spectrums above 6 GHz.
  • the embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.
  • the functions of the base station may also be performed by modules (such as chips) in the base station, or may be performed by a control subsystem including the functions of the base station.
  • the control subsystem including base station functions here may be the control center in the application scenarios of the above-mentioned terminals such as smart grid, industrial control, intelligent transportation, and smart city.
  • the functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or may be performed by a device including the terminal function. It can be understood that all or part of the functions of the base station can also be realized by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform).
  • the base station sends a downlink signal (or downlink information) to the terminal, and the downlink signal (or downlink information) is carried on the downlink channel;
  • the terminal sends an uplink signal (or uplink information) to the base station, and the uplink signal (or uplink information) carries on the upstream channel.
  • FIG. 2 and FIG. 3 are schematic diagrams of hardware structures implemented by terminal devices and network devices respectively.
  • the terminal device 10 includes a processor 101 , a memory 102 and a transceiver 103
  • the transceiver 103 includes a transmitter 1031 , a receiver 1032 and an antenna 1033
  • the network device 20 includes a processor 201 , a memory 202 and a transceiver 203
  • the transceiver 203 includes a transmitter 2031 , a receiver 2032 and an antenna 2033 .
  • the receiver 1032 can be used to receive the transmission control information through the antenna 1033 , and the transmitter 1031 can be used to send the transmission information to the network device 20 through the antenna 1033 .
  • the transmitter 2031 may be used to send transmission control configuration information to the terminal device 10 through the antenna 2033 , and the receiver 2032 may be used to receive the transmission information sent by the terminal device 10 through the antenna 2033 .
  • the network architecture may be used to implement a signal transceiving process on a wireless channel between a terminal device and a network device.
  • the following will introduce the sequence construction of Low PAPR sequence type 1 and Low PAPR sequence type 2 involved in the sequence construction process in the wireless system involving the low frequency band in this application.
  • Low PAPR sequence base sequence The value of is a cyclic shift (cyclic shift), where the Low PAPR sequence type1 sequence satisfies:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents the preconfigured value or the value configured by the network device
  • the superscript j represents an imaginary number Unit
  • the superscript n is the sequence index.
  • the value when the Low PAPR sequence type1 sequence is carried on the data channel, the value is 1; for another example, when the Low PAPR sequence type1 sequence is carried on the control channel, the value is 1; for another example, when the Low PAPR sequence type1 sequence is carried on the data channel , the value is 0; as another example, when the Low PAPR sequence type1 sequence is carried on the control channel, the value is 0.
  • the number of subcarriers occupied by one RB can be 12 or other values, and in this embodiment and subsequent embodiments only the number of subcarriers occupied by one RB can be 12 (ie ) as an example for illustration.
  • the base sequence It can be divided into different sequence groups, and the sequence group number u satisfies:
  • u takes on an integer from 0 to 29.
  • sequence number v is the number in the sequence group, and there are the following two cases:
  • the base sequence length M ZC is greater than or equal to 36. that is When , the base sequence satisfies:
  • the length N ZC is the largest prime number smaller than M ZC .
  • the length of the base sequence is less than 36, that is, when M ZC ⁇ 6,12,18,24 ⁇ , the base sequence satisfies:
  • the sequence length of is equal to the value of M ZC .
  • the sequence of is related to the value of u.
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents a pre-configured value or a value configured by a network device.
  • the base sequence It can be divided into different sequence groups, and the sequence group number u satisfies:
  • u takes on an integer from 0 to 29.
  • sequence number v is the number in the sequence group.
  • Base sequence of Low PAPR sequence type2 sequence It can be expressed as satisfy:
  • the length of the base sequence is greater than or equal to 30, that is, when M ⁇ 30, the sequence is a complex modulation symbol, which can be obtained from ⁇ /2-BPSK modulation using a Gold sequence.
  • a pre-configured sequence or a sequence configured by a network device is passed through the table.
  • sequence length of is equal to the value of M_ZC.
  • the sequence of is related to the value of u.
  • a signal transmitting device can transmit a sequence on a wireless channel, so as to carry information to be sent through the sequence.
  • the signal receiving device can receive the sequence on the wireless channel, and analyze the received sequence to obtain the information carried by the sequence.
  • the wireless channel may include a data channel, a control channel, and the like.
  • both the data channel and the control channel need to design appropriate sequences to support multi-stream multiplexing or multi-user multiplexing.
  • multi-stream multiplexing requires the design of DMRS sequences to distinguish different data streams through DMRS sequences. Different data streams can be used to support single-user multi-stream transmission, and can also be used to support multi-user multiplex transmission.
  • multi-user multiplexing needs to design a sequence according to the control channel format.
  • PUCCH format 0 carries information bits through sequences, and distinguishes different users through sequences for user multiplexing.
  • PUCCH format 1 carries information bits through sequences, and distinguishes different users through sequences and time-domain orthogonal codes for user multiplexing.
  • PUCCH format 4 carries information bits by encoding, distinguishes different users through DMRS sequences, and performs user multiplexing.
  • the waveform used by the data channel and the sequence type used by the DMRS are shown in Table 1.
  • Embodiment 1 for the sequence of DMRS of NR PDSCH shown in Table 1.
  • NR PDSCH only supports cyclic prefix-based orthogonal frequency division multiplexing (cyclic prefixed orthogonal frequency division multiplexing, CP-OFDM) waveform.
  • the DMRS sequence of the PDSCH adopts the Gold sequence, which is used to support multi-stream multiplexing, or multi-user multiplexing.
  • the CP OFDM waveform is used in NR PDSCH, which leads to high PAPR, which easily leads to power backoff of the power amplifier (PA) and reduces PA efficiency. In the high frequency band, it will lead to degradation of coverage and limited capacity at the edge of the cell.
  • the DMRS of NR PDSCH uses the Gold sequence, which has the problem of high PAPR, and the coverage cannot be guaranteed.
  • Embodiment 1 it is necessary to consider how to design the DMRS of NR PDSCH, enable multi-stream transmission, improve multiplexing capability, and simultaneously take into account low PAPR performance.
  • PDSCH resources there may be different numbers of occupied RBs or different starting positions of RBs, and how to perform multiplexing in this case is also a technical problem to be solved urgently.
  • Embodiment 2 for the sequence of DMRS of NR PUSCH shown in Table 1.
  • NR PUSCH only supports single-stream transmission, and NR PUSCH supports both DFT-s-OFDM and CP-OFDM waveforms.
  • transform precoding transform precoding
  • PUSCH uses transform precoding or uses DFT-s-OFDM waveform
  • the DMRS sequence r(n) of PUSCH satisfies:
  • r(n) represents the DMRS sequence of PUSCH; It is a Low PAPR sequence Type1 sequence, or, a Low PAPR sequence Type2 sequence.
  • the above network device configuration or preconfiguration conditions may include one or more of the following:
  • the network device is configured with high-layer parameter demodulation reference signal-uplink transmission precoding (dmrs-UplinkTransformPrecoding);
  • the network equipment configures or pre-configures the data transmitted on PUSCH to use ⁇ /2-BPSK modulation
  • the transmission of network device configuration or pre-configuration on PUSCH is not based on the transmission of message 3 (msg3);
  • the network device configuration or pre-configuration is not the transmission scheduled by the downlink control information format 0_0 (DCI format 0_0) in the common search space.
  • the network device configuration or pre-configuration conditions include one or more of the following, is a Low PAPR sequence Type2 sequence; and in other cases, It is a Low PAPR sequence Type1 sequence.
  • u is the sequence group number, by the formula Sure, Configured by high-level parameters or as a cell ID;
  • v is the serial number, and v and f gh are determined by whether group hopping is enabled and whether sequence hopping is enabled;
  • the current NR PUSCH supports two waveforms DFT-s-OFDM and CP OFDM, and the DFT-s-OFDM waveform has a lower PAPR than the CP OFDM waveform, and the coverage is larger.
  • the DMRS of NR PUSCH uses a low PAPR sequence for demodulation.
  • NR PUSCH only supports single-stream transmission, and the user transmission rate and cell capacity are limited. Therefore, it is necessary to consider how to design DMRS for NR PUSCH to enable multi-stream transmission, improve multiplexing capability, and take into account low PAPR performance.
  • DMRS Downlink Reference Signal
  • Embodiment 3 for the sequence of NR PUCCH format 0 shown in Table 2.
  • NR PUCCH format 0 carries information bits through sequences, and distinguishes different users through sequences, thereby supporting multi-user multiplexing.
  • PUCCH format 0 only occupies one RB, that is, the sequence length of PUCCH format 0 is the number of subcarriers occupied by one RB (that is, 12).
  • the sequence x(n) of PUCCH format 0 satisfies:
  • ⁇ 0
  • sequence group number u and sequence number v are determined according to group hopping (group hopping) and sequence hopping (sequence hopping)
  • the cyclic shift parameter ⁇ l of the Low PAPR sequence Type1 sequence is given by m cs determined, ⁇ satisfies:
  • l is an OFDM symbol in PUCCH transmission
  • l' is the index of the OFDM symbol in the slot, relative to the first OFDM symbol transmitted by the PUCCH in the slot;
  • m 0 is the initial cyclic shift value of PUCCH format 0;
  • m cs is determined according to the information carried in PUCCH format 0;
  • m int is related to the resource block number in the interlace, or the value is 0;
  • n cs is defined by a pseudorandom sequence, is the number of subcarriers occupied by one RB, since PUCCH format 0 only occupies one RB, then It can represent the sequence length of PUCCH format 0 (that is, 12).
  • the sequence of NR PUCCH format 0 uses the Low PAPR sequence Type1 sequence, which has low PAPR characteristics.
  • NR PUCCH format 0 only occupies one RB. In the unlicensed frequency band, the transmission power of the device cannot be fully utilized, and there is a problem of degradation in coverage performance.
  • PUCCH format 0 carried by different PUCCH resources there are cases where the number of occupied RBs is different or the starting position of RBs is different. How to multiplex in this case is also a technical problem to be solved urgently.
  • Embodiment 4 for the sequence of NR PUCCH format 1 shown in Table 2 and the DMRS of NR PUCCH format 1 shown in Table 2.
  • NR PUCCH format 1 carries information bits through sequences, and distinguishes different users through PUCCH format 1 sequences and DMRS sequences, thereby supporting multi-user multiplexing.
  • R15/R16PUCCH format 1 only occupies 1 RB, that is, the sequence length of PUCCH format 1 is 12.
  • the sequence z of PUCCH format 1 satisfies:
  • l is an OFDM symbol in PUCCH transmission
  • l' is the index of the OFDM symbol in the slot, relative to the first OFDM symbol transmitted by the PUCCH in the slot;
  • m 0 is the initial cyclic shift value of PUCCH format 1;
  • m int is related to the resource block number in the interlace, or the value is 0;
  • n cs is defined by a pseudorandom sequence
  • PUCCH format 1 is the number of subcarriers occupied by one RB, since PUCCH format 1 only occupies one RB, then It can represent the sequence length of PUCCH format 1 (that is, 12).
  • DMRS sequence of NR PUCCH format 1 is defined as follows:
  • w i (m) is an orthogonal sequence.
  • the sequence of NR PUCCH format 1 and the DMRS of NR PUCCH format 1 are based on the Low PAPR sequence Type1 sequence and have low PAPR characteristics.
  • NR PUCCH format 1 since NR PUCCH format 1 only occupies one RB, in the unlicensed frequency band, the transmission power of the device cannot be fully utilized, and there is a problem of degradation in coverage performance.
  • Embodiment five for the DMRS of NR PUCCH format 4 shown in Table 2.
  • NR PUCCH format 4 carries information bits by encoding, and uses DMRS sequences to distinguish different users for user multiplexing.
  • PUCCH format 4 only occupies 1 RB, that is, the DMRS sequence length of PUCCH format 4 is 12.
  • the DMRS sequence r l (m) of PUCCH format 4 satisfies:
  • the conditions for network device configuration or pre-configuration include one or more of the following:
  • the network device is configured with high-layer parameter demodulation reference signal-uplink transmission precoding (dmrs-UplinkTransformPrecoding);
  • the network equipment configures or pre-configures the data transmitted on PUSCH to use ⁇ /2-BPSK modulation
  • the network device configuration or pre-configuration conditions include one or more of the following, is a Low PAPR sequence Type2 sequence; and in other cases, It is a Low PAPR sequence Type1 sequence.
  • sequence group number u and sequence number v are determined according to group hopping and sequence hopping;
  • PUCCH format 4 is the number of subcarriers occupied by one RB, and PUCCH format 4 only occupies one RB, then It can represent the sequence length of PUCCH format 4,
  • the DMRS of NR PUCCH format 4 uses Low PAPR sequence Type1 or Low PAPR sequence Type2 sequence, which has low PAPR characteristics.
  • NR PUCCH format 4 since NR PUCCH format 4 only occupies one RB, in the unlicensed frequency band, the transmission power of the device cannot be fully utilized, and there is a problem of degradation in coverage performance.
  • PUCCH format 4 carried by different PUCCH resources there are cases where the number of occupied RBs is different or the starting position of RBs is different. How to multiplex in this case is also a technical problem to be solved urgently.
  • the current sequence transmitted on the wireless channel is constructed based on a relatively small bandwidth resource (for example, one RB) in the low-frequency communication system.
  • a relatively small bandwidth resource for example, one RB
  • the available bandwidth resources for example, multiple RBs
  • the present application provides a communication method and a communication device, which are used to provide a sequence construction method on a large bandwidth resource, and when the number of RBs used to carry the sequence is large, through
  • the cyclic extension method reduces implementation complexity and saves overhead, improving communication efficiency.
  • the low PAPR sequence is used to achieve multi-stream multiplexing or multi-user multiplexing, which improves the user rate or system capacity, and at the same time, solves the problem of the user's problem with different RB numbers and different RB starting positions
  • the problem of flexible multiplexing further improves the system capacity.
  • FIG. 4 is a schematic diagram of the communication method provided by this application, and the method includes the following steps.
  • the sending device generates a first sequence.
  • the transmitting device generates a first sequence in step S101, wherein the sequence length of the first sequence is positively correlated with the number of resource blocks RB of the first resource occupied by the first channel, and in the first resource
  • the first sequence is a sequence obtained by performing cyclic extension on the second sequence, and the first threshold is greater than or equal to 1.
  • the first sequence is used for carrying information bits or DMRS and the like.
  • generating the first sequence may also be expressed as generating the first sequence, constructing the first sequence, and so on.
  • the sending device sends the first sequence to the receiving device.
  • step S102 the sending device sends the first sequence generated in step S101 to the receiving device, and correspondingly, the receiving device receives the first sequence in step S102.
  • the sending device may process the first sequence in step S102 to obtain the processed first sequence, and then send the processed sequence in step S102.
  • the processing process may include one or more items of scrambling processing, encryption processing, compression processing, etc., which are not limited here.
  • the receiving device receives the processed first sequence in step S102, and performs corresponding processing on the processed sequence to obtain the first sequence.
  • the processing process may include one or more items such as descrambling processing, decryption processing, and decompression processing, which are not limited here.
  • the sending device further includes: sending first indication information, where the first indication information is used to indicate that switching of the first channel is enabled Precoding (transform precoding); or expressed as, the first indication information is used to indicate that when data is carried on the first channel where the first sequence is located, transform precoding is performed on the data.
  • the receiving device also receives the first indication information in step S102.
  • first indication information and the first sequence may be carried in the same message, and the first indication information and the first sequence may be carried in a different message, which is not limited here.
  • the sending device may also send first indication information to indicate that switching precoding of the first channel is enabled, where the first channel is enabled.
  • the channel conversion precoding instructs to perform discrete Fourier transform (discrete fourier transform, DFT) transform on the data carried on the first channel to obtain frequency domain data.
  • the receiving device parses the first sequence.
  • the first sequence is parsed in step S103 to obtain information bits or DMRS carried by the first sequence.
  • the sequence obtained by performing cyclic extension on the first sequence for the second sequence satisfies:
  • P is the first sequence
  • L is the length of the first sequence
  • S is the second sequence
  • A is the length of the second sequence
  • A is less than L
  • mod indicates a remainder operation
  • n is a sequence index
  • the first sequence may perform cyclic extension on the second sequence based on the implementation manner to obtain the first sequence.
  • the second sequence is determined based on the number of subcarriers included in the second resource, and the second resource is used to bear the second sequence.
  • the length of the second sequence is determined by the number of subcarriers included in the second resource used to carry the second sequence, and specifically the length of the second sequence is positively correlated with the number of subcarriers. That is, the larger the number of subcarriers included in the second resource, the larger the length value of the second sequence; conversely, the smaller the number of subcarriers included in the second resource, the smaller the length value of the second sequence.
  • the length of the second sequence satisfies:
  • A is the length of the second sequence
  • W is the number of RBs of the second resource, is the number of subcarriers occupied by one RB.
  • the first sequence is determined based on the number of subcarriers included in the first resource.
  • the first sequence constructed based on a smaller bandwidth resource is transmitted on the first channel.
  • the length of the first sequence is determined by the number of subcarriers contained in the first resource used to carry the first sequence, and specifically the length of the first sequence is positively correlated with the number of subcarriers. That is, the more subcarriers included in the first resource, the larger the length of the first sequence; conversely, the smaller the number of subcarriers included in the first resource, the smaller the length of the first sequence.
  • the length of the first sequence is N RB is the number of RBs of the first resource, is the number of subcarriers occupied by one RB.
  • the second sequence is Low PAPR sequence type 1 (Low PAPR sequence type 1), and the Low PAPR sequence type 1 satisfies:
  • r is the second sequence, is the base sequence of the Low PAPR sequence type 1 sequence, ⁇ represents the cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.
  • the second sequence may be a peak to average power ratio (PAPR) sequence, specifically, a Low PAPR sequence type 1 sequence.
  • PAPR peak to average power ratio
  • the second sequence used for cyclic extension to obtain the first sequence is a low PAPR sequence, so that the first sequence has low PAPR performance and can meet coverage requirements.
  • the parameter ⁇ in the Low PAPR sequence type 1 sequence is associated with the index value of the second resource used to bear the second sequence, specifically the index value is a frequency domain index value.
  • the parameter ⁇ in different Low PAPR sequence type 1 sequences can be determined based on different frequency domain index values of the second resources, and different second sequences can be constructed based on different frequency domain index values of the second resources, and can be obtained by Multiple combinations of different second sequences implement indication of multi-stream multiplexing and/or multi-user multiplexing.
  • the cyclic shift parameter ⁇ in Low PAPR sequence type 1 includes a randomly generated parameter; or, the cyclic shift parameter is associated with the index value of the second resource.
  • the cyclic shift parameter may be determined based on a randomly generated parameter or based on an index value of the second resource, so as to realize determination of multiple cyclic shift parameters.
  • Different second sequences can be constructed based on different cyclic shift parameters, and multiple combinations of different second sequences can be used to indicate multi-stream multiplexing and/or multi-user multiplexing.
  • the randomly generated parameters may include quadrature phase shift keying (quadrature phase shift keying, QPSK) symbols, binary phase shift keying (binary phase shift keying, BPSK) symbols, or other parameters.
  • quadrature phase shift keying quadrature phase shift keying, QPSK
  • binary phase shift keying binary phase shift keying, BPSK
  • different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same data stream; and/or, different values of the cyclic shift parameter are used to indicate that the second sequence is the same communication device the corresponding sequence.
  • the second sequence is a Low PAPR sequence type 1 sequence
  • the cyclic shift parameters in the Low PAPR sequence type 1 sequence can have many different values
  • different cyclic shift parameters can construct different second sequence
  • different first sequences can be obtained through multiple combinations of different second sequences
  • multi-stream multiplexing and/or multi-user multiplexing can be realized through different first sequences.
  • sequence length L of the first sequence is an integer multiple of the sequence length A of the second sequence (for example, a multiple of q, and q is an integer greater than 1) as an example for illustration.
  • the first sequence corresponding to a certain user is obtained by cyclic extension based on q second sequences, and each of the q second sequences satisfies:
  • S(n) represents the second sequence
  • e is a natural constant
  • superscript j is an imaginary number unit
  • superscript ⁇ represents a cyclic shift parameter
  • superscript n is a sequence index; is the base sequence of the Low PAPR sequence type 1 sequence or It is the base sequence of the Low PAPR sequence type 2 sequence.
  • the first sequence corresponding to another user is obtained by cyclic extension based on q second sequences, and each of the q second sequences satisfies:
  • S(n) represents the second sequence
  • e is a natural constant
  • superscript j is an imaginary number unit
  • superscript ⁇ represents a cyclic shift parameter
  • superscript n is a sequence index; is the base sequence of the Low PAPR sequence type 1 sequence or It is the base sequence of the Low PAPR sequence type 2 sequence.
  • ⁇ it is possible to set ⁇ not equal to ⁇ to obtain different first sequences, so that the first sequences corresponding to different users (or different data streams) are different, thereby realizing multi-user multiplexing (or multi-stream multiplexing ).
  • the first sequence corresponding to a certain user is obtained by cyclic extension based on q second sequences, and the first second sequence among the q second sequences satisfies:
  • S(n) represents the second sequence
  • e is a natural constant
  • superscript j is an imaginary unit
  • superscript n is a sequence index
  • ⁇ int is a pre-configured value or a value configured by a network device.
  • different ⁇ int can be configured for different users (or different data streams) through pre-configuration or network device configuration, so that the first sequences corresponding to different users (or different data streams) are different, so that Realize multi-user multiplexing (or multi-stream multiplexing).
  • the second sequence is Low PAPR sequence type 2
  • the Low PAPR sequence type 2 satisfies:
  • r is the second sequence, It is the base sequence of Low PAPR sequence type 2 sequence.
  • the second sequence may be a peak to average power ratio (PAPR) sequence, specifically a Low PAPR sequence type 2 sequence.
  • PAPR peak to average power ratio
  • the second sequence used for cyclic extension to obtain the first sequence is a low PAPR sequence, so that the first sequence has low PAPR performance and can meet coverage requirements.
  • the value of the first threshold is 9 or 10.
  • the first threshold may be a value greater than 1, and specifically the first threshold may be 9 or 10. Therefore, when the number of RBs of the first resource is greater than 9 or 10, the first sequence is a sequence obtained by performing cyclic extension on the second sequence.
  • the number of RBs of the first resource is a positive integer multiple of 2 or the number of RBs of the first resource is a positive integer multiple of 3 or the number of RBs of the first resource is 5 A positive integer multiple or the number of RBs of the first resource is 1.
  • the first sequence is carried on the first channel that is modulated by a single-carrier waveform.
  • the first sequence can be carried on the first channel through the modulation mode of the single carrier waveform.
  • the modulation method can reduce PAPR, and provide greater output power and higher power amplifier efficiency, thereby achieving the purpose of improving coverage and reducing energy consumption.
  • the modulation manner of the single carrier waveform is discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM).
  • the modulation mode of the single-carrier waveform may also be a single-carrier waveform such as single carrier-QAM (single carrier-QAM, quadrature amplitude modulation, SC-QAM).
  • single carrier-QAM single carrier-QAM, quadrature amplitude modulation, SC-QAM.
  • the first channel is a physical uplink control channel (physical uplink control channel, PUCCH), wherein the first sequence is a sequence of format 0 (PUCCH format 0) carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of format 1 (PUCCH format 1) carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of demodulation reference signal DMRS in format 1 (PUCCH format 1) carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of DMRS in format 4 (PUCCH format 4) carried in the PUCCH; or,
  • the first channel is a physical downlink shared channel (physical downlink shared channel, PDSCH), wherein the first sequence is a sequence of DMRS carried in the PDSCH; or,
  • the first channel is a physical uplink shared channel (PUSCH), wherein the first sequence is a sequence of DMRS carried in the PUSCH.
  • PUSCH physical uplink shared channel
  • sequence length of the first sequence is positively correlated with the number of RBs of the first resource occupied by the first channel, indicating that the more the number of RBs of the first resource occupied by the first channel, the more the number of RBs of the first resource occupied by the first sequence is.
  • the sequence length of the first sequence may be proportional to the number of RBs of the first resource occupied by the first channel.
  • the coefficients of the proportional relationship may be different.
  • the coefficient of the proportional relationship may be less than 1, such as 0.1, 0.3, 0.5 or other values, which are not limited here.
  • the coefficient of the proportional relationship may be equal to 1.
  • the first sequence is transmitted on the first channel based on the first resource, and the first The number of RBs of the resource is greater than the first threshold and the first threshold is greater than or equal to 1, that is, the first sequence is transmitted on the first channel based on a larger bandwidth resource, and the first sequence is cycled for the second sequence
  • the extended sequence Therefore, a sequence construction method on large-bandwidth resources is provided, and when the number of RBs used to carry the sequence is large, the cyclic extension method reduces implementation complexity and saves overhead, improving communication efficiency.
  • the first threshold in the embodiment shown in FIG. 4 is denoted as threshold K
  • the first sequence is denoted as r(n)
  • the second sequence is denoted as
  • Embodiment 6 is an improvement on the DMRS sequence of the PDSCH, that is, an improvement on Embodiment 1.
  • Embodiment 6 designs a DMRS sequence with low PAPR, which is used for PDSCH multi-stream multiplexing or multi-user multiplexing. Specifically, a DMRS sequence of the PDSCH is provided, and the DMRS sequence of the PDSCH is used as a specific implementation manner of the first sequence in the embodiment shown in FIG. 4 .
  • the DMRS sequence r(n) of PDSCH satisfies:
  • n 0,1,...,L-1;
  • r(n) is the DMRS sequence of PDSCH
  • It can be composed of Low PAPR sequence type 1 or Low PAPR sequence type 2;
  • n is the sequence index
  • L is the sequence length
  • N RB is the number of RBs used by PDSCH
  • L is the number of subcarriers contained in one RB, in NR system
  • the corresponding L represents the length of the DMRS sequence transmitted using the PDSCH of N RB RBs, or it can be understood that L represents the total number of subcarriers transmitted using the PDSCH of N RB RBs;
  • sequence group number u and sequence number v can be determined according to the configuration of group hopping and/or sequence hopping.
  • Case 1 It is a Low PAPR sequence type 1 sequence, and the cyclic shift parameter ⁇ is used to distinguish different sequences. Therefore, different values of the cyclic shift parameter ⁇ can be used to distinguish different data streams, or used to distinguish different UEs.
  • the cycle length corresponding to W RB lengths is The sequence of length L obtained by cyclic extension based on the Low PAPR sequence type 1 sequence, satisfy:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents the pre-configured value or the value configured by the network device
  • the superscript j is the imaginary unit
  • the superscript n is the sequence index
  • e is a natural constant
  • W ⁇ K that is, W is an integer greater than 0 and less than K.
  • Low PAPR sequence type 1 sequence involved in the above situation 1 can also refer to the relevant implementation in the aforementioned "1. Low PAPR sequence type 1 sequence", and will not be described here.
  • W 1
  • a sequence of length L is obtained through cyclic extension.
  • K 9 or 10.
  • the cycle length corresponding to W RB lengths is A sequence of length L obtained by cyclic extension based on the Low PAPR sequence type 2 sequence. satisfy:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents a pre-configured value or a value configured by a network device.
  • W ⁇ K that is, W is an integer greater than 0 and less than K.
  • Low PAPR sequence type 2 columns involved in the above case 2 can also refer to the relevant implementation in the aforementioned "2. Low PAPR sequence type sequence", and will not be repeated here.
  • K 9 or 10.
  • the optional constraints of the DMRS sequence construction of the PDSCH include one or more of the following:
  • ⁇ 2 , ⁇ 3 , ⁇ 5 are non-negative integers.
  • the DMRS sequence of the PDSCH is obtained through the above method.
  • the DMRS sequence r(n) of the PDSCH is obtained by the above method.
  • the transform precoding (transform precoding) of the PDSCH is enabled, that is, when the PDSCH uses transform precoding, the DMRS sequence r(n) of the PDSCH is obtained by the above method.
  • the PDSCH transmission uses a single carrier waveform.
  • PDSCH transmission uses DFT-s-OFDM.
  • the DMRS sequence of the PDSCH may be further optimized to reduce the PAPR of the DMRS sequence of the PDSCH.
  • the index of the first W RB is 1, ..., the first The index of each W RB is W indicates that every W RBs are indexed.
  • a possible processing manner 1 is to use W RBs as a granularity, and perform indexing on every W RBs.
  • a possible processing method 2 is to use W RBs as the granularity, and perform indexing on every W RBs. Replace the cyclic shift ej ⁇ n with randomly generated QPSK symbols.
  • the downlink PDSCH is enabled to perform multi-stream multiplexing using a single carrier waveform, and at the same time, the DMRS sequence of the PDSCH has low PAPR performance, which can meet the coverage requirement.
  • Good multi-stream multiplexing can also be performed when the number of RBs occupied by different PDSCHs is different, or the starting positions of RBs are different.
  • the data rate or system capacity is improved.
  • Embodiment 7 is an improvement on the sequence of the DMRS of the PUSCH, that is, an improvement on Embodiment 2.
  • Embodiment 7 designs a DMRS sequence with low PAPR, which is used for PUSCH multi-stream multiplexing or multi-user multiplexing. Specifically, a DMRS sequence of the PUSCH is provided, and the DMRS sequence of the PDSCH is used as a specific implementation manner of the first sequence in the embodiment shown in FIG. 4 .
  • the DMRS sequence r(n) of PUSCH satisfies:
  • n 0,1,...,L-1;
  • r(n) is the DMRS sequence of PUSCH
  • It can be composed of Low PAPR sequence type 1 or Low PAPR sequence type 2;
  • n is the sequence index
  • L is the sequence length
  • N RB is the number of RBs used by PUSCH
  • L is the number of subcarriers contained in one RB, in NR system
  • the corresponding L represents the length of the DMRS sequence transmitted using the PUSCH of N RB RBs, or it can be understood that L represents the total number of subcarriers transmitted using the PDSCH of N RB RBs;
  • sequence group number u and sequence number v can be determined according to the configuration of group hopping and/or sequence hopping.
  • the cycle length corresponding to W RB lengths is A sequence of length L obtained by cyclic extension based on the Low PAPR sequence type 1 sequence. satisfy:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents the pre-configured value or the value configured by the network device
  • the superscript j is the imaginary unit
  • the superscript n is the sequence index
  • e is a natural constant
  • W ⁇ K that is, W is an integer greater than 0 and less than K.
  • W 1
  • a sequence of length L is obtained through cyclic extension.
  • K 9 or 10.
  • the cycle length corresponding to W RB lengths is A sequence of length L obtained by cyclic extension based on the Low PAPR sequence type 2 sequence. satisfy:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents a pre-configured value or a value configured by a network device.
  • W ⁇ K that is, W is an integer greater than 0 and less than K.
  • K 9 or 10.
  • PUSCH DMRS sequence construction includes one or more of the following:
  • ⁇ 2 , ⁇ 3 , ⁇ 5 are non-negative integers.
  • the DMRS sequence of the PUSCH is obtained by the above method.
  • the DMRS sequence r(n) of the PUSCH is obtained by the above method.
  • the transform precoding (transform precoding) of the PUSCH is enabled, that is, when the PUSCH uses transform precoding, the DMRS sequence r(n) of the PUSCH is obtained by the above method.
  • the aforementioned DMRS sequence of the PUSCH may be further optimized to reduce the PAPR of the DMRS sequence of the PDSCH.
  • the index of the first W RB is 1, ..., the first The index of each W RB is W indicates that every W RBs are indexed.
  • a possible processing manner 1 is to use W RBs as a granularity, and perform indexing on every W RBs.
  • a possible processing method 2 is to use W RBs as the granularity, and perform indexing on every W RBs. Replace the cyclic shift ej ⁇ n with randomly generated QPSK symbols.
  • the downlink PUSCH is enabled to perform multi-stream multiplexing using a single-carrier waveform, and at the same time, the DMRS sequence of the PUSCH has low PAPR performance, which can meet the coverage requirement.
  • Good multi-stream multiplexing can also be performed when the number of RBs occupied by different PUSCHs is different, or the starting positions of RBs are different.
  • the data rate or system capacity is improved.
  • the improvement on the sequence of PUCCH format 0 is the improvement on the third embodiment.
  • Embodiment 7 designs a DMRS sequence with low PAPR, which is used for PUSCH multi-stream multiplexing or multi-user multiplexing. Specifically, a sequence of PUCCH format 0 is provided, and the sequence of PUCCH format 0 is used as a specific implementation manner of the first sequence in the embodiment shown in FIG. 4 .
  • n 0,1,...,L-1;
  • r(n) is the sequence of PUCCH format 0;
  • n is the sequence index
  • L is the sequence length
  • N RB is the number of RBs used by PDSCH
  • L is the number of subcarriers contained in one RB, in NR system
  • the corresponding L represents the length of the DMRS sequence transmitted using the PDSCH of N RB RBs, or it can be understood that L represents the total number of subcarriers transmitted using the PDSCH of N RB RBs;
  • sequence group number u and sequence number v can be determined according to the configuration of group hopping and/or sequence hopping.
  • It can be Low PAPR sequence type 1, and the cyclic shift parameter ⁇ is used to distinguish different sequences. Therefore, different values of the cyclic shift parameter ⁇ can be used to distinguish different UEs.
  • the cycle length corresponding to W RB lengths is A sequence of length L obtained by cyclic extension based on the Low PAPR sequence type 1 sequence. satisfy:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents the pre-configured value or the value configured by the network device
  • the superscript j is the imaginary unit
  • the superscript n is the sequence index
  • W ⁇ K that is, W is an integer greater than 0 and less than K.
  • Low PAPR sequence type 1 sequence involved in the above situation 1 can also refer to the relevant implementation in the aforementioned "1. Low PAPR sequence type 1 sequence", and will not be described here.
  • W 1
  • a sequence of length L is obtained through cyclic extension.
  • K 9 or 10.
  • ⁇ 2 , ⁇ 3 , ⁇ 5 are non-negative integers.
  • the aforementioned PUCCH format 0 sequence can be further optimized to reduce the PAPR of the PUCCH format 0 sequence.
  • the index of the first W RB is 1, ..., the first The index of each W RB is W indicates that every W RBs are indexed.
  • a possible processing manner 1 is to use W RBs as a granularity, and perform indexing on every W RBs.
  • a possible processing method 2 is to use W RBs as the granularity, and perform indexing on every W RBs. Replace the cyclic shift ej ⁇ n with randomly generated QPSK symbols.
  • the multi-stream multiplexing of PUCCH format 0 is enabled when the number of RBs used is greater than 1, and the sequence of PUCCH format 0 has low PAPR performance, which can meet the coverage requirement.
  • Good multi-stream multiplexing can also be performed when the number of RBs occupied by different PUCCH format0 is different, or the starting positions of RBs are different.
  • it improves the ability of flexible multiplexing and system capacity.
  • Embodiment 9 for the improvement of the sequence of PUCCH format 1 and the DMRS of PUCCH format 1 shown in Table 2, is the improvement of embodiment 4.
  • Embodiment 9 designs a DMRS sequence with low PAPR, which is used for multi-user multiplexing of PUCCH format1. Specifically, a PUCCH format 1 sequence and a DMRS sequence of PUCCH format 1 are provided, and the PUCCH format 1 sequence and the DMRS sequence of PUCCH format 1 are used as a specific implementation of the first sequence in the embodiment shown in FIG. 4 .
  • PUCCH format 1 sequence r(n) satisfies:
  • n 0,1,...,L-1;
  • r(n) is the PUCCH format 1 sequence
  • d(0) is a complex modulation symbol
  • ⁇ (m) is pre-configured by the protocol or configured by the network device
  • It can be composed of Low PAPR sequence type 1 or Low PAPR sequence type 2;
  • n is the sequence index
  • L is the sequence length
  • N RB is the number of RBs used by PUSCH
  • L is the number of subcarriers contained in one RB, in NR system
  • the corresponding L represents the length of the DMRS sequence transmitted using the PUSCH of N RB RBs, or it can be understood that L represents the total number of subcarriers transmitted using the PDSCH of N RB RBs;
  • sequence group number u and sequence number v can be based on group hopping and/or sequence hopping
  • the configuration of (sequence hopping) is determined.
  • the DMRS sequence r(n) of PUCCH format 1 satisfies:
  • n 0,1,...,L-1;
  • r(m L+n) is the DMRS sequence of PUCCH format 1;
  • ⁇ (m) is an orthogonal sequence
  • It can be composed of Low PAPR sequence type 1 or Low PAPR sequence type 2;
  • n is the sequence index
  • L is the sequence length
  • N RB is the number of RBs used by PUSCH
  • L is the number of subcarriers contained in one RB, in NR system
  • the corresponding L represents the length of the DMRS sequence transmitted using the PUSCH of N RB RBs, or it can be understood that L represents the total number of subcarriers transmitted using the PDSCH of N RB RBs;
  • sequence group number u and sequence number v can be determined according to the configuration of group hopping and/or sequence hopping;
  • m is the number of symbols occupied by PUCCH format 1;
  • N PUCCH 1 is a preconfigured value or a value configured by a network device; optionally, N PUCCH 1 is 0, 2, 4, 6, 8, 10 or 12.
  • It can be composed of Low PAPR sequence type 1, and the cyclic shift parameter ⁇ is used to distinguish different sequences. Therefore, different values of the cyclic shift parameter ⁇ can be used to distinguish different UEs.
  • the cycle length corresponding to W RB lengths is A sequence of length L obtained by cyclic extension based on the Low PAPR sequence type 1 sequence. satisfy:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents the pre-configured value or the value configured by the network device
  • the superscript j is the imaginary unit
  • the superscript n is the sequence index
  • e is a natural constant
  • W ⁇ K that is, W is an integer greater than 0 and less than K.
  • Low PAPR sequence type 1 sequence involved in the above can also refer to the relevant implementation in the aforementioned "1. Low PAPR sequence type 1 sequence", and will not be repeated here.
  • W 1
  • a sequence of length L is obtained through cyclic extension.
  • K 9 or 10.
  • ⁇ 2 , ⁇ 3 , ⁇ 5 are non-negative integers.
  • the aforementioned PUCCH format 1 sequence and the DMRS sequence of PUCCH format 1 can be further optimized to reduce the PAPR of the PUCCH format 1 sequence and the DMRS sequence of PUCCH format 1.
  • the index of the first W RB is 1, ..., the first The index of each W RB is W indicates that every W RBs are indexed.
  • a possible processing manner 1 is to use W RBs as a granularity, and perform indexing on every W RBs.
  • a possible processing method 2 is to use W RBs as the granularity, and perform indexing on every W RBs. Replace the cyclic shift ej ⁇ n with randomly generated QPSK symbols.
  • the multi-user multiplexing of PUCCH format 1 is enabled when the number of RBs used is greater than 1, and the sequence of PUCCH format 1 has low PAPR performance, which can meet the coverage requirement.
  • Good multi-stream multiplexing can also be performed when the number of RBs occupied by different PUCCH format1 is different, or the starting positions of RBs are different.
  • it improves the ability of flexible multiplexing and system capacity.
  • Embodiment 10 is an improvement to the DMRS sequence of PUCCH format 4, that is, an improvement to Embodiment 5.
  • Embodiment 10 designs a DMRS sequence with low PAPR, which is used for multi-user multiplexing of PUCCH format4. Specifically, a DMRS sequence of PUCCH format 4 is provided, and the DMRS sequence of PUCCH format 4 is used as a specific implementation of the first sequence in the embodiment shown in FIG. 4 .
  • the DMRS sequence r(n) of PUCCH format 4 satisfies:
  • n 0,1,...,L-1;
  • r(n) is the DMRS sequence of PUSCH
  • It can be composed of Low PAPR sequence type 1 or Low PAPR sequence type 2;
  • n is the sequence index
  • L is the sequence length
  • N RB is the number of RBs used by PUSCH
  • L is the number of subcarriers contained in one RB, in NR system
  • the corresponding L represents the length of the DMRS sequence transmitted using the PUSCH of N RB RBs, or it can be understood that L represents the total number of subcarriers transmitted using the PDSCH of N RB RBs;
  • sequence group number u and sequence number v can be determined according to the configuration of group hopping and/or sequence hopping.
  • the cycle length corresponding to W RB lengths is A sequence of length L obtained by cyclic extension based on the Low PAPR sequence type 1 sequence. satisfy:
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents the pre-configured value or the value configured by the network device
  • the superscript j is the imaginary unit
  • the superscript n is the sequence index
  • e is a natural constant
  • W ⁇ K that is, W is an integer greater than 0 and less than K.
  • W 1
  • a sequence of length L is obtained through cyclic extension.
  • K 9 or 10.
  • the subscript u represents the number of the sequence group
  • the subscript v represents the number in the sequence group
  • the superscript ⁇ represents the cyclic shift parameter
  • the superscript ⁇ represents a pre-configured value or a value configured by a network device.
  • K 9 or 10.
  • ⁇ 2 , ⁇ 3 , ⁇ 5 are non-negative integers.
  • the DMRS sequence of PUCCH format 4 is obtained by the above method.
  • the DMRS sequence r(n) of PUCCH format 4 is obtained by the above method.
  • the transform precoding (transform precoding) of PUCCH format 4 is enabled, that is, when PUCCH format 4 uses transform precoding, the DMRS sequence r(n) of PUCCH format 4 is obtained by the above method.
  • the aforementioned DMRS sequence of PUCCH format 4 can be further optimized to reduce the PAPR of the DMRS sequence of PUCCH format 4.
  • the index of the first W RB is 1, ..., the first The index of each W RB is W indicates that every W RBs are indexed.
  • a possible processing manner 1 is to use W RBs as a granularity, and perform indexing on every W RBs.
  • a possible processing method 2 is to use W RBs as the granularity, and perform indexing on every W RBs.
  • the value of the cyclic shift parameter ⁇ of every W RBs is the same, and the value of the cyclic shift parameter ⁇ of different W RBs is different, that is, the value of ⁇ is a randomly generated QPSK symbol.
  • the aforementioned payload of PUCCH format 4 (wherein, the payload of PUCCH format 4 is recorded as control information) can be further optimized to reduce the PAPR of the control information.
  • DFT precoding is performed on the control information at a granularity of W RBs to form multiple DFT processing subunits.
  • the index of the first W RB is 1, ..., the first The index of each W RB is W indicates that every W RBs are indexed. record The output of each DFT processing subunit is And satisfy:
  • n is the position index of the processing result
  • e j ⁇ n is the coefficient of the cyclic shift
  • ⁇ is the cyclic shift parameter
  • the result after cyclic shift processing (ie ) needs to be mapped to resources occupied by the PUCCH for transmission.
  • a possible processing manner 1 is to use W RBs as a granularity, and perform indexing on every W RBs.
  • a possible processing method 2 is to use W RBs as the granularity, and perform indexing on every W RBs. Replace the cyclic shift ej ⁇ n with randomly generated QPSK symbols.
  • the multi-user multiplexing of PUCCH format 4 is enabled when the number of RBs used is greater than 1, and the sequence of PUCCH format 4 has low PAPR performance, which can meet the coverage requirements.
  • Good multi-user multiplexing can also be performed when the number of RBs occupied by different PUCCH format4 is different, or the starting positions of RBs are different.
  • it improves the ability of flexible multiplexing and system capacity.
  • a sequence construction method for multi-stream multiplexing or multi-user multiplexing is designed, which can flexibly support multiplexing and improve system capacity while ensuring low PAPR characteristics .
  • FIG. 5 is a schematic diagram of an implementation of a communication device provided by an embodiment of the present application.
  • the communication device may specifically execute the implementation process involved in the terminal device in any of the foregoing embodiments.
  • the communication device 500 includes a processing unit 501 and a transceiver unit 502 .
  • the communication device 500 when the communication device 500 is used to perform the aforementioned process of generating a sequence, the communication device 500 is used to perform the following process.
  • the processing unit 501 is configured to generate a first sequence, wherein the sequence length of the first sequence is positively correlated with the number of resource block RBs of the first resource occupied by the first channel, and the number of RBs of the first resource is When greater than the first threshold, the first sequence is a sequence obtained by performing cyclic extension on the second sequence, and the first threshold is greater than or equal to 1;
  • the transceiving unit 502 is configured to send the first sequence, and the first sequence is carried on the first channel.
  • the sequence obtained by performing cyclic extension on the first sequence to the second sequence satisfies:
  • P is the first sequence
  • L is the length of the first sequence
  • S is the second sequence
  • A is the length of the second sequence
  • A is less than L
  • mod indicates a remainder operation
  • n is a sequence index
  • the second sequence is determined based on the number of subcarriers included in the second resource, and the second resource is used to bear the second sequence.
  • the length of the second sequence satisfies:
  • A is the length of the second sequence
  • W is the number of RBs of the second resource, is the number of subcarriers occupied by one RB.
  • the first sequence is determined based on the number of subcarriers included in the first resource.
  • the length of the first sequence is N RB is the number of RBs of the first resource, is the number of subcarriers occupied by one RB.
  • the second sequence is Low PAPR sequence type 1
  • the Low PAPR sequence type 1 satisfies:
  • r is the second sequence, is the base sequence of the Low PAPR sequence type 1 sequence, ⁇ represents the cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.
  • the ⁇ satisfies:
  • the cyclic shift parameters include randomly generated parameters; or,
  • the cyclic shift parameter is associated with the index value of the second resource.
  • Different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same data stream.
  • Different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same communication device.
  • the second sequence is Low PAPR sequence type 2
  • the Low PAPR sequence type 2 satisfies:
  • r is the second sequence, It is the base sequence of Low PAPR sequence type 2 sequence.
  • the value of the first threshold is 9 or 10.
  • the transceiving unit 501 is further configured to send first indication information, where the first indication information is used to indicate enabling switch precoding of the first channel.
  • the first channel is a physical uplink control channel PUCCH, where the first sequence is a format 0 sequence carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, where the first sequence is a format 1 sequence carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of a demodulation reference signal DMRS in format 1 carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of DMRS in format 4 carried in the PUCCH; or,
  • the first channel is a physical downlink data channel PDSCH, wherein the first sequence is a sequence of DMRS carried in the PDSCH; or,
  • the first channel is a physical uplink data channel PUSCH, wherein the first sequence is a sequence of DMRS carried in the PUSCH.
  • the number of RBs of the first resource is a positive integer multiple of 2 or the number of RBs of the first resource is a positive integer multiple of 3 or the number of RBs of the first resource is 5 A positive integer multiple or the number of RBs of the first resource is 1.
  • the first sequence is carried on the first channel that is modulated by a single-carrier waveform.
  • the modulation manner of the single carrier waveform is DFT-s-OFDM.
  • the communication device 500 when the communication device 500 is used to perform the aforementioned parsing sequence process, the communication device 500 is used to perform the following process.
  • the transceiver unit 502 is configured to receive a first sequence, the first sequence is carried on the first channel; wherein, the sequence length of the first sequence is positively correlated with the number of resource blocks RB of the first resource occupied by the first channel , and when the number of RBs of the first resource is greater than the first threshold, the first sequence is a sequence obtained by performing cyclic extension on the second sequence, and the first threshold is greater than or equal to 1;
  • the processing unit is configured to parse the first sequence.
  • the sequence obtained by performing cyclic extension on the first sequence for the second sequence satisfies:
  • P is the first sequence
  • L is the length of the first sequence
  • S is the second sequence
  • A is the length of the second sequence
  • A is less than L
  • mod indicates a remainder operation
  • n is a sequence index
  • the second sequence is determined based on the number of subcarriers included in the second resource, and the second resource is used to bear the second sequence.
  • the length of the second sequence satisfies:
  • A is the length of the second sequence
  • W is the number of RBs of the second resource, is the number of subcarriers occupied by one RB.
  • the first sequence is determined based on the number of subcarriers included in the first resource.
  • the length of the first sequence is N RB is the number of RBs of the first resource, is the number of subcarriers occupied by one RB.
  • the second sequence is Low PAPR sequence type 1
  • the Low PAPR sequence type 1 satisfies:
  • r is the second sequence, is the base sequence of the Low PAPR sequence type 1 sequence, ⁇ represents the cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.
  • the ⁇ satisfies:
  • the cyclic shift parameters include randomly generated parameters; or,
  • the cyclic shift parameter is associated with the index value of the second resource.
  • Different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same data stream.
  • Different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same communication device.
  • the second sequence is Low PAPR sequence type 2
  • the Low PAPR sequence type 2 satisfies:
  • r is the second sequence, It is the base sequence of Low PAPR sequence type 2 sequence.
  • the value of the first threshold is 9 or 10.
  • the device further includes:
  • the device further includes:
  • Receive first indication information where the first indication information is used to indicate enabling switch precoding of the first channel.
  • the first channel is a physical uplink control channel PUCCH, where the first sequence is a format 0 sequence carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, where the first sequence is a format 1 sequence carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of a demodulation reference signal DMRS in format 1 carried in the PUCCH; or,
  • the first channel is a physical uplink control channel PUCCH, wherein the first sequence is a sequence of DMRS in format 4 carried in the PUCCH; or,
  • the first channel is a physical downlink data channel PDSCH, wherein the first sequence is a sequence of DMRS carried in the PDSCH; or,
  • the first channel is a physical uplink data channel PUSCH, wherein the first sequence is a sequence of DMRS carried in the PUSCH.
  • the number of RBs of the first resource is a positive integer multiple of 2 or the number of RBs of the first resource is a positive integer multiple of 3 or the number of RBs of the first resource is 5 A positive integer multiple or the number of RBs of the first resource is 1.
  • the first sequence is carried on the first channel that is modulated by a single-carrier waveform.
  • the modulation manner of the single carrier waveform is DFT-s-OFDM.
  • FIG. 6 is the communication device involved in the above-mentioned embodiment provided for the embodiment of this application.
  • the communication device may specifically be the terminal device in the above-mentioned embodiment, wherein, a possible logical structure of the communication device 600 Schematically, the communication device 600 may include but not limited to at least one processor 601 and a communication port 602 . Further optionally, the device may further include at least one of a memory 603 and a bus 604. In the embodiment of the present application, the at least one processor 601 is configured to control and process actions of the communication device 600.
  • the processor 601 may be a central processing unit, a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination that realizes computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the communication device shown in FIG. 6 can be specifically used to implement other steps implemented by the terminal device in the foregoing corresponding method embodiments, and realize the corresponding technical effects of the terminal device.
  • the specific implementation of the communication device shown in FIG. 6 is as follows: Reference can be made to the descriptions in the foregoing method embodiments, and details will not be repeated here.
  • FIG 7 is a schematic structural diagram of the communication device involved in the above-mentioned embodiment provided by the embodiment of the present application.
  • the communication device may specifically be the network device in the above-mentioned embodiment, wherein the structure of the communication device may refer to 7 shows the structure.
  • the communication device includes at least one processor 711 and at least one network interface 714 . Further optionally, the communication device further includes at least one memory 712 , at least one transceiver 713 and one or more antennas 715 .
  • the processor 711, the memory 712, the transceiver 713 and the network interface 714 are connected, for example, through a bus. In this embodiment of the application, the connection may include various interfaces, transmission lines or buses, which are not limited in this embodiment.
  • the antenna 715 is connected to the transceiver 713.
  • the network interface 714 is used to enable the communication device to communicate with other communication devices through communication links.
  • the network interface 714 may include a network interface between the communication device and a core network device, such as an S1 interface, and the network interface may include a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as X2 Or Xn interface.
  • a core network device such as an S1 interface
  • the network interface may include a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as X2 Or Xn interface.
  • the processor 711 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs, for example, to support the communication device to perform actions described in the embodiments.
  • the communication device may include a baseband processor and a central processor.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processor is mainly used to control the entire terminal equipment, execute software programs, and process data of the software programs.
  • the processor 711 in FIG. 7 can integrate the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors, interconnected through technologies such as a bus.
  • a terminal device may include multiple baseband processors to adapt to different network standards, a terminal device may include multiple central processors to enhance its processing capability, and various components of the terminal device may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit may also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • Memory is primarily used to store software programs and data.
  • the memory 712 may exist independently and be connected to the processor 711 .
  • the memory 712 may be integrated with the processor 711, for example, integrated into one chip.
  • the memory 712 can store the program codes for executing the technical solutions of the embodiments of the present application, and the execution is controlled by the processor 711 , and various types of computer program codes to be executed can also be regarded as drivers for the processor 711 .
  • Figure 7 shows only one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories.
  • a memory may also be called a storage medium or a storage device.
  • the memory may be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, which is not limited in this embodiment of the present application.
  • the transceiver 713 may be used to support receiving or sending radio frequency signals between the communication device and the terminal, and the transceiver 713 may be connected to the antenna 715 .
  • the transceiver 713 includes a transmitter Tx and a receiver Rx.
  • one or more antennas 715 can receive radio frequency signals
  • the receiver Rx of the transceiver 713 is used to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and convert the digital baseband
  • the signal or digital intermediate frequency signal is provided to the processor 711, so that the processor 711 performs further processing on the digital baseband signal or digital intermediate frequency signal, such as demodulation processing and decoding processing.
  • the transmitter Tx in the transceiver 713 is also used to receive the modulated digital baseband signal or digital intermediate frequency signal from the processor 711, and convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and pass a One or more antennas 715 transmit the radio frequency signal.
  • the receiver Rx can selectively perform one or more stages of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal.
  • the order of the down-mixing processing and analog-to-digital conversion processing The order is adjustable.
  • the transmitter Tx can selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a radio frequency signal.
  • the up-mixing processing and digital-to-analog conversion processing The sequence is adjustable.
  • Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals.
  • a transceiver may also be called a transceiver unit, a transceiver, a transceiver device, and the like.
  • the device used to realize the receiving function in the transceiver unit can be regarded as a receiving unit
  • the device used to realize the sending function in the transceiver unit can be regarded as a sending unit, that is, the transceiver unit includes a receiving unit and a sending unit, and the receiving unit also It can be called receiver, input port, receiving circuit, etc., and the sending unit can be called transmitter, transmitter, or transmitting circuit, etc.
  • the communication device shown in FIG. 7 can specifically be used to implement the steps implemented by the network device in the foregoing method embodiments, and realize the corresponding technical effects of the network device.
  • the specific implementation manner of the communication device shown in FIG. 7 can be Reference is made to the descriptions in the foregoing method embodiments, and details are not repeated here.
  • the embodiment of the present application also provides a computer-readable storage medium that stores one or more computer-executable instructions.
  • the processor executes the method described in the corresponding implementation manner of the terminal device in the foregoing embodiments. method.
  • Embodiments of the present application also provide a computer-readable storage medium that stores one or more computer-executable instructions.
  • the processor When the computer-executable instructions are executed by a processor, the processor performs the implementation described in the corresponding implementation manner of the network device in the foregoing embodiments. method.
  • the embodiment of the present application also provides a computer program product (or computer program) storing one or more computers.
  • the processor executes the method described in the corresponding implementation manner of the terminal device above. .
  • the embodiment of the present application also provides a computer program product storing one or more computers.
  • the processor executes the method described in the corresponding implementation manner of the network device above.
  • An embodiment of the present application further provides a system-on-a-chip, where the system-on-a-chip includes at least one processor, configured to support a terminal device in implementing the functions involved in the implementation manners corresponding to the foregoing terminal device.
  • the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor.
  • the system-on-a-chip may further include a memory, and the memory is used for storing necessary program instructions and data of the terminal device.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • An embodiment of the present application further provides a system-on-a-chip, including at least one processor, configured to support a network device to implement the functions involved in the implementation manner corresponding to the above-mentioned network device.
  • the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor.
  • the chip system may further include a memory, and the memory is used for storing necessary program instructions and data of the network device.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the disclosed system, device and method can 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 displayed 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 above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or part of the contribution to the prior art or all or 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 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 media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de communication et un appareil de communication pour fournir une manière de construire une séquence sur une grande ressource de bande passante (RB), et lorsqu'un nombre de RB d'une première ressource pour transporter une séquence est relativement grand, pour réduire la complexité de mise en œuvre et pour économiser des surdébits d'une manière d'extension cyclique, améliorant ainsi l'efficacité de communication. Dans le procédé, l'appareil de communication génère une première séquence, une longueur de séquence de la première séquence étant corrélée positivement au nombre de RB de la première ressource occupée par un premier canal, et lorsque le nombre de RB de la première ressource est supérieur au premier seuil, la première séquence est une séquence obtenue par réalisation d'une extension cyclique sur une seconde séquence, le premier seuil étant supérieur ou égal à 1. Le dispositif de communication envoie la première séquence, la première séquence étant transportée dans le premier canal.
PCT/CN2022/107848 2021-08-06 2022-07-26 Procédé de communication et appareil de communication WO2023011247A1 (fr)

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CN202110903302.X 2021-08-06

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110249548A1 (en) * 2010-04-07 2011-10-13 Qualcomm Incorporated Efficient zadoff-chu sequence generation
CN103944685A (zh) * 2013-01-18 2014-07-23 华为技术有限公司 扩展参考信号的方法、设备和通信系统
CN110036589A (zh) * 2016-09-30 2019-07-19 瑞典爱立信有限公司 用于ifdma的功率和资源有效的上行链路dmrs序列

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110249548A1 (en) * 2010-04-07 2011-10-13 Qualcomm Incorporated Efficient zadoff-chu sequence generation
CN103944685A (zh) * 2013-01-18 2014-07-23 华为技术有限公司 扩展参考信号的方法、设备和通信系统
CN110036589A (zh) * 2016-09-30 2019-07-19 瑞典爱立信有限公司 用于ifdma的功率和资源有效的上行链路dmrs序列

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