WO2023011247A1

WO2023011247A1 - Communication method and communication apparatus

Info

Publication number: WO2023011247A1
Application number: PCT/CN2022/107848
Authority: WO
Inventors: 刘荣宽; 张佳胤; 石蒙
Original assignee: 华为技术有限公司
Priority date: 2021-08-06
Filing date: 2022-07-26
Publication date: 2023-02-09
Also published as: CN115706615A

Abstract

The present application provides a communication method and a communication apparatus for providing a manner of constructing a sequence on a large bandwidth resource, and when a number of RBs of a first resource for carrying a sequence is relatively large, reducing implementation complexity and saving overheads in a cyclic extension manner, thereby improving communication efficiency. In the method, the communications apparatus generates a first sequence, wherein a sequence length of the first sequence is positively correlated to the number of RBs of the first resource occupied by a 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 a second sequence, the first threshold being greater than or equal to 1. The communication device sends the first sequence, the first sequence being carried in the first channel.

Description

A communication method and communication device

This application claims the priority of the Chinese patent application with the application number 202110903302.X and the title of the invention "a communication method and communication device" submitted to the State Intellectual Property Office of China on August 06, 2021, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to the field of wireless technologies, and in particular to a communication method and a communication device.

Background technique

With the increasing demand for material culture, more and more scenarios require the support of higher transmission rates. In order to meet the service transmission rate requirements, the support of large bandwidth is usually required. Since the available bandwidth resources of the wireless system in the low frequency band are limited, the wireless system is constantly developing to a higher frequency band.

Currently, in a low-frequency wireless communication system, a signal transmitting device can transmit a sequence on a wireless channel, so as to carry information to be sent through the sequence. Correspondingly, 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. Wherein, the wireless channel may include a data channel, a control channel, and the like.

However, 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. However, in a high-frequency communication system, the available bandwidth resources (for example, multiple RBs) between different devices are relatively large, which will make the sequence constructed based on the smaller bandwidth resources no longer applicable.

Therefore, how to realize the construction of sequences in larger bandwidth resources is a technical problem to be solved urgently.

Contents of the invention

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 In the first aspect and its possible implementation manners, 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. In this method, 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 When the first threshold is reached, 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.

Based on the above technical solution, in the first sequence sent by the communication device and 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. Compared with the current wireless channel transmission based on a sequence constructed with a smaller bandwidth resource (for example, one RB) in a low-frequency communication system, 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.

It should be noted that 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.

In addition, 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 In the first aspect and its possible implementation manners, 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. In the method, 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.

Based on the above technical solution, in the first sequence received by the communication device and 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. Compared with currently transmitting a sequence constructed on a wireless channel based on a smaller bandwidth resource (for example, one RB) in a low-frequency communication system, 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.

It should be noted that 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.

In a possible implementation manner of the first aspect or the second aspect, the sequence obtained by performing cyclic extension on the first sequence for the second sequence satisfies:

P(n)=S(n mod A),n=0,...,L-1;

Wherein, 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, and A is less than L, mod indicates a remainder operation, and n is a sequence index.

Based on the above technical solution, when the number of RBs used to bear the first resource of the first sequence is large, 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.

In a possible implementation manner of the first aspect or the second aspect, 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.

Based on the above technical solution, 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.

In a possible implementation of the first aspect or the second aspect, the length of the second sequence satisfies:

Wherein, 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.

In a possible implementation of the first aspect or the second aspect, when the number of RBs of the first resource is not greater than the first threshold, the first sequence is based on the number of subcarriers contained in the first resource determined by the number.

Based on the above technical solution, when the number of RBs used to carry the first resource of the first sequence is not greater than the first threshold, the first sequence constructed based on relatively small bandwidth resources is transmitted on the first channel. Wherein, 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.

In a possible implementation of the first aspect or the second aspect, when the number of RBs of the first resource is not greater than the first threshold, 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.

In a possible implementation of the first aspect or the second aspect, the second sequence is Low PAPR sequence type 1 (Low PAPR sequence type 1), and the Low PAPR sequence type 1 satisfies:

Wherein, r is the second sequence,

is the base sequence of the Low PAPR sequence type 1 sequence, α represents the cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.

Based on the above technical solution, the second sequence may be a peak to average power ratio (PAPR) sequence, specifically a Low PAPR sequence type 1 sequence. In other words, when the number of RBs used to carry the first sequence is large, 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.

In a possible implementation of the first aspect or the second aspect, the α satisfies:

in,

is the number of subcarriers occupied by one RB,

is the index value of the second resource.

Based on the above technical solution, it can be seen from the above description that the parameter α 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. Thereby, the parameter α 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.

In a possible implementation manner of the first aspect or the second aspect, the cyclic shift parameter includes a randomly generated parameter; or, the cyclic shift parameter is associated with an index value of the second resource.

Based on the above technical solution, 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.

Optionally, 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.

In a possible implementation of the first aspect or the second aspect, 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.

Based on the above technical solution, when the second sequence is a Low PAPR sequence type 1 sequence, since 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.

In a possible implementation of the first aspect or the second aspect, the second sequence is Low PAPR sequence type 2, and the Low PAPR sequence type 2 satisfies:

Wherein, r is the second sequence,

It is the base sequence of Low PAPR sequence type 2 sequence.

Based on the above technical solution, the second sequence may be a peak to average power ratio (PAPR) sequence, specifically a Low PAPR sequence type 2 sequence. In other words, when the number of RBs used to carry the first sequence is large, 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.

In a possible implementation manner of the first aspect or the second aspect, the value of the first threshold is 9 or 10.

Based on the above technical solution, 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.

In a possible implementation manner of the first aspect, 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.

Based on the above technical solution, when the communication device used to send the first sequence is a sending device, 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.

In a possible implementation manner of the second aspect, 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.

Based on the above technical solution, when the communication device for receiving the first sequence is a receiving device, 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.

In a possible implementation of the first aspect or the second aspect,

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.

It should be noted that the 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 larger the value of the sequence length is; conversely, the smaller the number of RBs of the first resource occupied by the first channel is, the smaller the value of the sequence length of the first sequence is. In other words, the sequence length of the first sequence may be proportional to the number of RBs of the first resource occupied by the first channel. However, in different implementations of the first channel, the coefficients of the proportional relationship may be different. For example, when the sequence carried on the first channel has a comb structure, 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. For another example, when the sequence carried on the first channel is not in a comb structure, the coefficient of the proportional relationship may be equal to 1.

In a possible implementation of the first aspect or the second aspect, 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.

In a possible implementation manner of the first aspect or the second aspect, the first sequence is carried on the first channel in a modulation mode of a single carrier waveform.

Based on the above technical solution, on the first channel, the first sequence can be specifically carried on the first channel through the modulation mode of single carrier waveform. Compared with 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.

In a possible implementation of the first aspect or the second aspect, the modulation method of the single carrier waveform is discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT) -s-OFDM).

Optionally, 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).

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 For 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 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.

In a possible implementation manner of the third aspect or the fourth aspect, the sequence obtained by performing cyclic extension on the first sequence to the second sequence satisfies:

P(n)=S(n mod A),n=0,...,L-1;

In a possible implementation manner of the third aspect or the fourth aspect, 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.

In a possible implementation manner of the third aspect or the fourth aspect, the length of the second sequence satisfies:

is the number of subcarriers occupied by one RB.

In a possible implementation of the third aspect or the fourth aspect, when the number of RBs of the first resource is not greater than the first threshold, the first sequence is based on the number of subcarriers contained in the first resource determined by the number.

In a possible implementation of the third aspect or the fourth aspect, when the number of RBs of the first resource is not greater than the first threshold, 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.

In a possible implementation of the third aspect or the fourth aspect, the second sequence is Low PAPR sequence type 1, and the Low PAPR sequence type 1 satisfies:

Wherein, r is the second sequence,

In a possible implementation of the third aspect or the fourth aspect, the α satisfies:

in,

is the number of subcarriers occupied by one RB,

is the index value of the second resource.

In a possible implementation of the third aspect or the fourth aspect,

The cyclic shift parameters include randomly generated parameters; or,

The cyclic shift parameter is associated with the index value of the second resource.

In a possible implementation of the third aspect or the fourth aspect,

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 a sequence corresponding to the same communication device.

In a possible implementation of the third aspect or the fourth aspect, the second sequence is Low PAPR sequence type 2, and the Low PAPR sequence type 2 satisfies:

Wherein, r is the second sequence,

It is the base sequence of Low PAPR sequence type 2 sequence.

In a possible implementation manner of the third aspect or the fourth aspect, the value of the first threshold is 9 or 10.

In a possible implementation manner of the third aspect, the transceiver unit is further configured to:

Sending first indication information, where the first indication information is used to indicate enabling switch precoding of the first channel.

In a possible implementation manner of the fourth aspect, 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.

In a possible implementation of the third aspect or the fourth aspect,

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.

In a possible implementation of the third aspect or the fourth aspect, 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.

In a possible implementation manner of the third aspect or the fourth aspect, the first sequence is carried on the first channel in a single carrier waveform modulation manner.

In a possible implementation manner of the third aspect or the fourth aspect, 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. When the computer-executable instructions are executed by a processor, 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. When the computer program product is executed by the processor, 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.

In a possible design, the 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. Optionally, 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.

Wherein, 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.

It should be understood that, for the components in the device, the "sending" mentioned above may be referred to as "output", and the "receiving" may be referred to as "input".

It can be seen from the above technical solutions that in the first sequence sent or received by the communication device and carried on the first channel, 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. Compared with currently transmitting a sequence constructed on a wireless channel based on a smaller bandwidth resource (for example, one RB) in a low-frequency communication system, 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.

Description of drawings

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.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

First, some terms used in the embodiments of the present application are explained, so as to facilitate the understanding of those skilled in the art.

(1) Terminal equipment (or terminal, user, user terminal, terminal user, etc.): 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. For example, personal communication service (PCS) telephone, cordless telephone, session initiation protocol (session initiation protocol, SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), tablet computer (Pad), 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).

In addition, the 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.

(2) 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 . At present, 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. Controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved Node B , or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc. In addition, in a network structure, 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.

In addition, 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.

In this application, in other possible cases, 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.

In this application, 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. In 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.

(3) Configuration and pre-configuration: In the application, both configuration and pre-configuration will be used.

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.

(4) The terms "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.

It should be noted that 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. Wherein, 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 The communication system and the like to be developed in the next step are not limited here.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a schematic structural diagram of a communication system 1000 applied in an embodiment of the present application.

As shown in FIG. 1 , 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 . Wherein, 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 ). In addition, 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. It can be understood that all or part of the functions of the 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). The embodiment of the present application does not limit the specific technology and specific equipment form adopted by the radio access network equipment. For ease of description, a base station is used as an example of a radio access network device for description below.

In this application, 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 roles of the base station and the terminal can be relative. For example, the helicopter or UAV 120i in FIG. base station; however, for base station 110a, 120i is a terminal, that is, communication between 110a and 120i is performed through a wireless air interface protocol. Of course, communication between 110a and 120i may also be performed through an interface protocol between base stations. In this case, 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.

In the embodiments of the present application, 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).

In this application, 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.

In the network architecture corresponding to FIG. 1 , hardware structures related to related devices include terminal devices and network devices. FIG. 2 and FIG. 3 are schematic diagrams of hardware structures implemented by terminal devices and network devices respectively. Wherein, as shown in FIG. 2 , the terminal device 10 includes a processor 101 , a memory 102 and a transceiver 103 , and 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 , and 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 .

Exemplarily, in the above-mentioned network architecture shown in FIG. 1 to FIG. 3 , 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.

1. Low PAPR sequence type1 sequence

low PAPR sequence

base sequence

The value of is a cyclic shift (cyclic shift), where the Low PAPR sequence type1 sequence satisfies:

Among them, the subscript u represents the number of the sequence group, the subscript v represents the number in the sequence group, the superscript α represents the cyclic shift parameter, the superscript δ represents the preconfigured value or the value configured by the network device, and the superscript j represents an imaginary number Unit, the superscript n is the sequence index.

It should be noted that, in this embodiment and subsequent embodiments, there may be multiple implementation manners for the superscript δ. For example, 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.

Indicates the Low PAPR sequence type1 sequence, e is a natural constant,

Indicates the base sequence of Low PAPR sequence type 1 sequence, M _ZC is the sequence length of Low PAPR sequence type 1 sequence, and

(m is the number of RBs carrying the Low PAPR sequence type1 sequence),

is the number of subcarriers occupied by one RB.

It should be noted that 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.

Based on the base sequence of the Low PAPR sequence type 1 sequence, multiple sequences can be defined through different α and δ values.

In addition, the base sequence

It can be divided into different sequence groups, and the sequence group number u satisfies:

u∈{0,1,...,29};

That is, u takes on an integer from 0 to 29.

In addition, the sequence number v is the number in the sequence group, and there are the following two cases:

1. When 1/2≤m/2 ^δ ≤5, each sequence group contains a base sequence (v=0) with a length of

2. When 6≤m/2 ^δ , each sequence group contains two base sequences (v=0,1), and the length is

base sequence

The definition of depends on the sequence length of the Low PAPR sequence type 1 sequence (M _ZC ), the base sequence can be expressed as

The base sequence for different values of M _ZC will be

The implementation is described:

Implementation method 1. The base sequence length M _ZC is greater than or equal to 36. that is

When , the base sequence satisfies:

x _q (m) = exp(-jπqm(m+1)/N _ZC );

The length N _ZC is the largest prime number smaller than M _ZC .

Implementation method 2. The length of the base sequence is less than 36, that is, when M _ZC ∈{6,12,18,24}, the base sequence satisfies:

in,

For a pre-configured sequence or a sequence configured for a network device.

optional,

The sequence length of is equal to the value of M _ZC .

optional,

The sequence of is related to the value of u.

Implementation mode 3, when M _ZC =30, the base sequence expression is as follows:

2. Low PAPR sequence type2 sequence

low PAPR sequence

base sequence

satisfy:

Wherein, the subscript u represents the number of the sequence group, the subscript v represents the number in the sequence group, the superscript α represents the cyclic shift parameter, and the superscript δ represents a pre-configured value or a value configured by a network device.

Indicates the Low PAPR sequence type2 sequence,

Indicates the base sequence of the Low PAPR sequence type 2 sequence, M is the sequence length of the Low PAPR sequence type 2 sequence, and

(m is the number of RBs carrying the Low PAPR sequence type2 sequence),

is the number of subcarriers occupied by one RB.

In addition, the base sequence

u∈{0,1,...,29};

That is, u takes on an integer from 0 to 29.

In addition, the sequence number v is the number in the sequence group. When 1/2≤m/2 ^δ , each sequence group contains a base sequence (v=0), and the length is

Base sequence of Low PAPR sequence type2 sequence

It can be expressed as

satisfy:

in,

The definition of is associated with the sequence length M, the following will be different values of M for the base sequence

The implementation is described:

Implementation method 1. 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 π/2-BPSK modulation using a Gold sequence.

Implementation method 2. The length of the base sequence is less than 30, that is, when M=6, the sequence

satisfy:

in

A pre-configured sequence or a sequence configured by a network device is passed through the table.

optional,

The sequence length of is equal to the value of M_ZC.

optional,

The sequence of is related to the value of u.

Implementation method 3. When M∈{12,18,24}, the sequence

It can be obtained by π/2-BPSK modulation.

With the increasing demand for material culture, more and more scenarios require the support of higher transmission rates. In order to meet the service transmission rate requirements, the support of large bandwidth is usually required. Since the available bandwidth resources of the wireless system in the low frequency band are limited, the wireless system is constantly developing to a higher frequency band. Currently, in a low-frequency wireless communication system, a signal transmitting device can transmit a sequence on a wireless channel, so as to carry information to be sent through the sequence. Correspondingly, 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. Wherein, the wireless channel may include a data channel, a control channel, and the like.

Specifically, both the data channel and the control channel need to design appropriate sequences to support multi-stream multiplexing or multi-user multiplexing. For data channels, 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. For the control channel, 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.

Exemplarily, in NR, the waveform used by the data channel and the sequence type used by the DMRS are shown in Table 1.

Table 1

Exemplarily, the sequence types used in the multiplexing design of the uplink control channel in NR are shown in Table 2.

Table 2

The various implementation processes shown in Table 1 and Table 2 will be described below in combination with the sequence construction methods of the aforementioned Low PAPR sequence type1 sequence and Low PAPR sequence type2 sequence.

Embodiment 1, for the sequence of DMRS of NR PDSCH shown in Table 1.

As 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.

However, 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. In addition, the DMRS of NR PDSCH uses the Gold sequence, which has the problem of high PAPR, and the coverage cannot be guaranteed.

Therefore, for the realization of 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. In addition, for different 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.

As shown in Table 1, NR PUSCH only supports single-stream transmission, and NR PUSCH supports both DFT-s-OFDM and CP-OFDM waveforms. When PUSCH transform precoding (transform precoding) is enabled, that is, when PUSCH uses transform precoding (or uses DFT-s-OFDM waveform), the DMRS sequence r(n) of PUSCH satisfies:

Wherein, r(n) represents the DMRS sequence of PUSCH;

It is a Low PAPR sequence Type1 sequence, or, a Low PAPR sequence Type2 sequence.

Specifically, under conditions configured or pre-configured by network devices,

is a Low PAPR sequence Type2 sequence; and in other cases,

It is a Low PAPR sequence Type1 sequence, and the cyclic shift α=0, δ=1;

Optionally, the above network device configuration or preconfiguration conditions may include one or more of the following:

1. The network device is configured with high-layer parameter demodulation reference signal-uplink transmission precoding (dmrs-UplinkTransformPrecoding);

2. The network equipment configures or pre-configures the data transmitted on PUSCH to use π/2-BPSK modulation;

3. The transmission of network device configuration or pre-configuration on PUSCH is not based on the transmission of message 3 (msg3);

4. 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.

In other words, when 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;

is the length of the reference signal, or the number of subcarriers occupied by the PUSCH.

In the second embodiment, since 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. Moreover, the DMRS of NR PUSCH uses a low PAPR sequence for demodulation.

However, 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. In addition, for different PUSCH 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 3, for the sequence of NR PUCCH format 0 shown in Table 2.

As shown in Table 2, NR PUCCH format 0 carries information bits through sequences, and distinguishes different users through sequences, thereby supporting multi-user multiplexing. Generally, 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:

in,

is a Low PAPR sequence Type1 sequence, δ=0, sequence group number u and sequence number v are determined according to group hopping (group hopping) and sequence hopping (sequence hopping), and the cyclic shift parameter α _l of the Low PAPR sequence Type1 sequence is given by m _cs determined, α satisfies:

Among them, the relevant parameters are defined as follows:

is the slot sequence number of the radio frame;

l is an OFDM symbol in PUCCH transmission;

l=0 relative to the first OFDM symbol of 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;

The function 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).

In the third embodiment, the sequence of NR PUCCH format 0 uses the Low PAPR sequence Type1 sequence, which has low PAPR characteristics. However, 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. When increasing the number of RBs occupied by NR PUCCH format 0, it is necessary to consider how to design the sequence of NR PUCCH format 0 to improve the multiplexing capability after the number of RBs increases while taking into account the low PAPR performance. In addition, for 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.

As 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:

in,

It is a Low PAPR sequence Type1 sequence and δ=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 α _l of Low PAPR sequence Type1 sequence is given by m _cs is determined, m _cs is determined according to the information carried in PUCCH format 0

Among them, the relevant parameters are defined as follows:

is the slot sequence number of the radio frame;

l is an OFDM symbol in PUCCH transmission;

l=0 relative to the first OFDM symbol of PUCCH transmission;

m ₀ is the initial cyclic shift value of PUCCH format 1;

m _cs = 0;

The function n _cs is defined by a pseudorandom sequence;

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).

In addition, the DMRS sequence of NR PUCCH format 1 is defined as follows:

in

Can be pre-configured or network device-configured;

is a Low PAPR sequence Type1 sequence; w _i (m) is an orthogonal sequence.

In Embodiment 4, 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. However, 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. When increasing the number of RBs in NR PUCCH format 1, it is necessary to consider how to design the sequence of NR PUCCH format 1 and the DMRS sequence of NR PUCCH format 1 to improve the multiplexing capability after increasing the number of RBs while taking into account the low PAPR performance. In addition, for the PUCCH format 1 carried by different PUCCH resources, there are cases where the number of occupied RBs is different or the starting position of the RBs is different. How to multiplex in this case is also a technical problem that needs to be solved urgently.

Embodiment five, for the DMRS of NR PUCCH format 4 shown in Table 2.

As shown in Table 2, NR PUCCH format 4 carries information bits by encoding, and uses DMRS sequences to distinguish different users for user multiplexing. Currently, 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:

Among them, the relevant parameters are defined as follows:

It is a Low PAPR sequence Type1 sequence, or, a Low PAPR sequence Type2 sequence;

Specifically, under conditions configured or pre-configured by network devices,

is a Low PAPR sequence Type2 sequence; and in other cases,

It is a Low PAPR sequence Type1 sequence, and the cyclic shift α is determined according to the initial cyclic shift m ₀ of PUCCH format 4, δ=0;

Optionally, the conditions for network device configuration or pre-configuration 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.

The sequence group number u and sequence number v are determined according to group hopping and sequence hopping;

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,

In Embodiment 5, the DMRS of NR PUCCH format 4 uses Low PAPR sequence Type1 or Low PAPR sequence Type2 sequence, which has low PAPR characteristics. However, 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. When increasing the number of RBs in NR PUCCH format 4, it is necessary to consider how to design the DMRS sequence of NR PUCCH format 4 to improve the multiplexing capability after increasing the number of RBs while taking into account the low PAPR performance. In addition, for 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.

To sum up, 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. However, in a high-frequency communication system, the available bandwidth resources (for example, multiple RBs) between different devices are relatively large, which will make the sequence constructed based on the smaller bandwidth resources no longer applicable. In other words, how to realize the construction of sequences in larger bandwidth resources is a technical problem to be solved urgently.

In order to solve the above technical problems, 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. Moreover, in some embodiments, 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.

Please refer to FIG. 4 , which is a schematic diagram of the communication method provided by this application, and the method includes the following steps.

S101. The sending device generates a first sequence.

In this embodiment, 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 When the number of RBs 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. Wherein, the first sequence is used for carrying information bits or DMRS and the like.

In addition, generating the first sequence may also be expressed as generating the first sequence, constructing the first sequence, and so on.

S102. The sending device sends the first sequence to the receiving device.

In this embodiment, in 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.

Optionally, 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. Wherein, the processing process may include one or more items of scrambling processing, encryption processing, compression processing, etc., which are not limited here.

Correspondingly, the receiving device receives the processed first sequence in step S102, and performs corresponding processing on the processed sequence to obtain the first sequence. Wherein, the processing process may include one or more items such as descrambling processing, decryption processing, and decompression processing, which are not limited here.

In a possible implementation manner, in addition to sending the first sequence in step S102, 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. Correspondingly, the receiving device also receives the first indication information in step S102.

Wherein, the 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.

S103. The receiving device parses the first sequence.

In this embodiment, after the first sequence is received in step S102, the first sequence is parsed in step S103 to obtain information bits or DMRS carried by the first sequence.

In a possible implementation manner, the sequence obtained by performing cyclic extension on the first sequence for the second sequence satisfies:

P(n)=S(n mod A),n=0,...,L-1;

Specifically, when the number of RBs used to bear the first resource of the first sequence is large, the first sequence may perform cyclic extension on the second sequence based on the implementation manner to obtain the first sequence.

In a possible implementation manner, 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.

Specifically, 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.

In a possible implementation, the length of the second sequence satisfies:

is the number of subcarriers occupied by one RB.

In a possible implementation manner, when the number of RBs of the first resource is not greater than the first threshold, the first sequence is determined based on the number of subcarriers included in the first resource.

Specifically, when the number of RBs used to carry the first resource of the first sequence is not greater than the first threshold, the first sequence constructed based on a smaller bandwidth resource is transmitted on the first channel. Wherein, 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.

In a possible implementation manner, when the number of RBs of the first resource is not greater than the first threshold, 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.

Wherein, r is the second sequence,

Specifically, the second sequence may be a peak to average power ratio (PAPR) sequence, specifically, a Low PAPR sequence type 1 sequence. In other words, when the number of RBs used to carry the first sequence is large, 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.

Among them, for the cyclic shift parameter α in Low PAPR sequence type 1, the α satisfies:

in,

is the number of subcarriers occupied by one RB,

is the index value of the second resource.

Specifically, it can be seen from the above description that the parameter α 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. Thereby, the parameter α 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.

In addition, for the cyclic shift parameter α in Low PAPR sequence type 1, the cyclic shift parameter includes a randomly generated parameter; or, the cyclic shift parameter is associated with the index value of the second resource.

Specifically, 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.

In addition, 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.

Specifically, when the second sequence is a Low PAPR sequence type 1 sequence, since 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, 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.

In the following, the 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.

In an implementation example, the first sequence corresponding to a certain user (or a certain data stream) is obtained by cyclic extension based on q second sequences, and each of the q second sequences satisfies:

Wherein, S(n) represents the second sequence, e is a natural constant, superscript j is an imaginary number unit, superscript α represents a cyclic shift parameter, and 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.

And the first sequence corresponding to another user (or another data stream) is obtained by cyclic extension based on q second sequences, and each of the q second sequences satisfies:

Wherein, S(n) represents the second sequence, e is a natural constant, superscript j is an imaginary number unit, superscript β represents a cyclic shift parameter, and 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.

In this implementation example, it is possible to set α not equal to β 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 ).

In another implementation example, the first sequence corresponding to a certain user (or a certain data stream) is obtained by cyclic extension based on q second sequences, and the first second sequence among the q second sequences satisfies:

And the second second sequence among the q second sequences satisfies:

…

And the qth second sequence among the q second sequences satisfies:

Wherein, S(n) represents the second sequence, e is a natural constant, superscript j is an imaginary unit, and 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;

In addition, α ₀ , α ₁ , ... α _q satisfy:

in,

is the number of subcarriers occupied by one RB,

is the index value of the resource carrying q second sequences (for example, the index value of the resource carrying the first second sequence among the q second sequences is 0, and the resource carrying the first second sequence among the q second sequences The index value of the resource is 1, ..., the index value of the resource carrying the first second sequence in the q second sequences is q-1), and α _int is a pre-configured value or a value configured by a network device.

In this implementation example, different α _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).

In a possible implementation, the second sequence is Low PAPR sequence type 2, and the Low PAPR sequence type 2 satisfies:

Wherein, r is the second sequence,

It is the base sequence of Low PAPR sequence type 2 sequence.

Specifically, the second sequence may be a peak to average power ratio (PAPR) sequence, specifically a Low PAPR sequence type 2 sequence. In other words, when the number of RBs used to carry the first sequence is large, 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.

In a possible implementation manner, the value of the first threshold is 9 or 10.

Specifically, 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.

In a possible implementation manner, 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.

In a possible implementation manner, the first sequence is carried on the first channel that is modulated by a single-carrier waveform.

Specifically, on the first channel, the first sequence can be carried on the first channel through the modulation mode of the single carrier waveform. Compared with the modulation mode of the multi-carrier waveform, there is a problem of larger PAPR. 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.

In a possible implementation manner, the modulation manner of the single carrier waveform is discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM).

In one possible implementation,

Based on the technical solution shown in Figure 4, what is sent by the sending device (or received by the receiving device) is carried in the first sequence on the first channel, and the sequence length of the first sequence is the same as the first resource occupied by the first channel The number of RBs of resource blocks is positively correlated, 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. Compared with currently transmitting a sequence constructed on a wireless channel based on a smaller bandwidth resource (for example, one RB) in a low-frequency communication system, 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.

It can be seen from the implementation process shown in FIG. 4 that there are many different implementation manners of the first channel and the first sequence. In the following, the implementation process shown in the foregoing embodiments 1 to 5 will be improved in combination with the communication method shown in FIG. 4 .

It should be noted that, in subsequent embodiments, the first threshold in the embodiment shown in FIG. 4 is denoted as threshold K, the first sequence is denoted as r(n), and 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.

Among them, 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 .

Among them, the DMRS sequence r(n) of PDSCH satisfies:

n=0,1,...,L-1;

Definitions of relevant parameters include:

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;

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;

δ=1;

The values of sequence group number u and sequence number v can be determined according to the configuration of group hopping and/or sequence hopping.

The following will target

Different implementations are described.

Case 1:

It is a Low PAPR sequence type 1 sequence, and the cyclic shift parameter α is used to distinguish different sequences. Therefore, different values of the cyclic shift parameter α can be used to distinguish different data streams, or used to distinguish different UEs.

1. When the number of RBs used by PDSCH N _RB ≤ threshold K, or equivalently, when the DMRS sequence length L of PDSCH ≤ threshold K·N _RB ,

It consists of a Low PAPR sequence type 1 sequence with a sequence length of L.

satisfy:

2. When the number of RBs used by PDSCH N _RB >threshold K, or equivalently, when the DMRS sequence length L of PDSCH >threshold K·N _RB ,

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:

In the above implementation, the subscript u represents the number of the sequence group, the subscript v represents the number in the sequence group, the superscript α represents the cyclic shift parameter, the superscript δ represents the pre-configured value or the value configured by the network device, and the superscript j is the imaginary unit, and the superscript n is the sequence index;

where e is a natural constant,

Indicates a Low PAPR sequence type 1 sequence with a sequence length of L and

The sequence length of is L;

Indicates the base sequence of the Low PAPR sequence type 1 sequence. In addition, W<K, that is, W is an integer greater than 0 and less than K.

In addition, the 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.

Optionally, W=1, that is, based on a generated Low PAPR sequence type 1 of RB length, a sequence of length L is obtained through cyclic extension.

Optionally, W=2, that is, based on the generated LowPAPR sequence type 1 of the length of one RBG, a sequence of length L is obtained through cyclic extension, where one RBG consists of two RBs.

Optionally, K=9 or 10.

case two,

It is a Low PAPR sequence type 2 sequence.

It consists of a Low PAPR sequence type 2 sequence with a sequence length of L.

satisfy:

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:

In the above implementation, the subscript u represents the number of the sequence group, the subscript v represents the number in the sequence group, the superscript α represents the cyclic shift parameter, and the superscript δ represents a pre-configured value or a value configured by a network device.

in,

Represents a Low PAPR sequence type2 sequence and

The sequence length of is L,

Represents the base sequence of the Low PAPR sequence type 2 sequence, e is a natural constant,

is the number of subcarriers occupied by one RB. In addition, W<K, that is, W is an integer greater than 0 and less than K.

In addition, the 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.

Optionally, W=1, that is, based on a generated Low PAPR sequence type 2 of RB length, a sequence of length L is obtained through cyclic extension.

Optionally, W=2, that is, based on the generated LowPAPR sequence type 2 of the length of one RBG, a sequence of length L is obtained through cyclic extension, where one RBG consists of two RBs.

Optionally, K=9 or 10.

Further, the optional constraints of the DMRS sequence construction of the PDSCH include one or more of the following:

optional,

Among them δ ₂ , δ ₃ , δ ₅ are non-negative integers.

Optionally, when the PDSCH uses a downlink single carrier waveform, the DMRS sequence of the PDSCH is obtained through the above method.

Optionally, when the downlink single-carrier waveform used by the PDSCH is DFT-s-OFDM, the DMRS sequence r(n) of the PDSCH is obtained by the above method.

Optionally, when 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.

Optionally, the PDSCH transmission uses a single carrier waveform. For example, PDSCH transmission uses DFT-s-OFDM.

In a possible implementation manner, the DMRS sequence of the PDSCH may be further optimized to reduce the PAPR of the DMRS sequence of the PDSCH.

Specifically, when the DMRS sequence of PDSCH satisfies the condition of using short sequence cyclic extension, and when

When it is Low PAPR sequence type 1, it satisfies:

Note that 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. The value of the cyclic shift parameter α of each W RB is the same, and the value of the cyclic shift parameter α of different W RBs is different, that is

When W=1,

It can be the index of each RB of PDSCH. When W=2, one RBG consists of 2 RBs,

It can be the index of each RBG of PDSCH.

A possible processing method 2 is to use W RBs as the granularity, and perform indexing on every W RBs. Replace the cyclic shift ^ejαn with randomly generated QPSK symbols. When W=1,

It can be the index of each RB of PDSCH. When W=2, one RBG consists of 2 RBs,

It can be the index of each RBG of PDSCH.

Based on the technical solution of the sixth embodiment, 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. Moreover, while ensuring the coverage of the downlink PDSCH, 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.

Among them, 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 .

Among them, the DMRS sequence r(n) of PUSCH satisfies:

n=0,1,...,L-1;

Definitions of relevant parameters include:

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;

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;

δ=1;

The following will target

Different implementations are described.

case one,

It is Low PAPR sequence type 1, and the cyclic shift parameter α is used to distinguish different sequences. Therefore, different values of the cyclic shift parameter α can be used to distinguish different data streams, or used to distinguish different UEs.

1. When the number of RBs N _RB used by PUSCH ≤ threshold K, or equivalently, when the DMRS sequence length L of PUSCH ≤ threshold K·N _RB /2 ^δ ,

It consists of a Low PAPR sequence type 1 sequence with a sequence length of L.

satisfy:

2. When the number of RBs used by PUSCH N _RB >threshold K, or equivalently, when the DMRS sequence length L of PUSCH >threshold K N _RB /2 ^δ ,

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:

where e is a natural constant,

Indicates a Low PAPR sequence type 1 sequence with a sequence length of L and

The sequence length of is L;

Optionally, W=2, that is, based on the generated LowPAPR sequence type 1 of the length of an RBG, a sequence of length L is obtained through cyclic extension, wherein an RBG is composed of 2 RBs.

Optionally, K=9 or 10.

case two,

It is Low PAPR sequence type 2.

It consists of a Low PAPR sequence type 2 sequence with a sequence length of L.

satisfy:

The cycle length corresponding to W RB lengths is

satisfy:

in,

Represents a Low PAPR sequence type2 sequence and

The sequence length of is L,

Optionally, K=9 or 10.

Further, the optional constraints of PUSCH DMRS sequence construction include one or more of the following:

optional,

Among them δ ₂ , δ ₃ , δ ₅ are non-negative integers.

Optionally, when the PUSCH uses an uplink single-carrier waveform, the DMRS sequence of the PUSCH is obtained by the above method.

Optionally, when the uplink single carrier waveform used by the PUSCH is DFT-s-OFDM, the DMRS sequence r(n) of the PUSCH is obtained by the above method.

Optionally, when 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.

In a possible implementation manner, the aforementioned DMRS sequence of the PUSCH may be further optimized to reduce the PAPR of the DMRS sequence of the PDSCH.

Specifically, when the DMRS sequence of PUSCH satisfies the condition of using short sequence cyclic extension, and when

When it is Low PAPR sequence type 1, it satisfies:

Note that 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.

When W=1,

It can be the index of each RB of PUSCH. When W=2, one RBG consists of 2 RBs,

It can be the index of each RBG of PUSCH.

It can be the index of each RB of PUSCH. When W=2, one RBG consists of 2 RBs,

It can be the index of each RBG of PUSCH.

Based on the technical solution of the seventh embodiment, 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. In addition, while ensuring downlink PUSCH coverage, the data rate or system capacity is improved.

In the eighth embodiment, the improvement on the sequence of PUCCH format 0 is the improvement on the third embodiment.

Among them, 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 .

Among them, the sequence r(n) of PUCCH format 0 satisfies:

n=0,1,...,L-1;

Definitions of relevant parameters include:

r(n) is the sequence of PUCCH format 0;

It can be composed of Low PAPR sequence type 1;

n is the sequence index;

L is the sequence length;

N _RB is the number of RBs used by PDSCH;

is the number of subcarriers contained in one RB, in NR system

δ=1;

specific,

It can be Low PAPR sequence type 1, and the cyclic shift parameter α is used to distinguish different sequences. Therefore, different values of the cyclic shift parameter α can be used to distinguish different UEs.

1. When the number of RBs N _RB used by PUCCH format 0 ≤ threshold K, or equivalently, when the sequence length L of PUCCH format 0 ≤ threshold K·N _RB ,

It consists of a Low PAPR sequence type 1 sequence with a sequence length of L.

satisfy:

2. When the number of RBs used by PUCCH format 0 N _RB >threshold K, or equivalently, when the sequence length L of PUCCH format 0 >threshold K·N _RB ,

The cycle length corresponding to W RB lengths is

satisfy:

where e is a natural constant,

Optionally, K=9 or 10.

optional,

Among them δ ₂ , δ ₃ , δ ₅ are non-negative integers.

In a possible implementation manner, the aforementioned PUCCH format 0 sequence can be further optimized to reduce the PAPR of the PUCCH format 0 sequence.

Specifically, when the PUCCH format 0 sequence satisfies the condition of using short sequence cyclic extension, and when

When it is Low PAPR sequence type 1, it satisfies:

Note that 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.

When W=1,

It can be the index of each RB of PUCCH format 0. When W=2, one RBG consists of 2 RBs,

It can be the index of each RBG in PUCCH format 0.

Based on the technical solution of Embodiment 8, 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. In addition, while ensuring the coverage of PUCCH format 0, 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.

Among them, 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;

Definitions of relevant parameters include:

r(n) is the PUCCH format 1 sequence;

d(0) is a complex modulation symbol;

ω(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;

is the number of subcarriers contained in one RB, in NR system

δ=1;

The values of 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;

m=0,1,...,N ^{PUCCH 1} -1;

Definitions of relevant parameters include:

r(m L+n) is the DMRS sequence of PUCCH format 1;

ω(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;

is the number of subcarriers contained in one RB, in NR system

δ=1;

The values of 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.

specific,

It can be composed of Low PAPR sequence type 1, and the cyclic shift parameter α is used to distinguish different sequences. Therefore, different values of the cyclic shift parameter α can be used to distinguish different UEs.

1. When the number of RBs N _RB used by PUCCH format 1 ≤ threshold K, or equivalently, when the sequence length L of PUCCH format 1 ≤ threshold K·N _RB ,

It consists of a Low PAPR sequence type 1 sequence with a sequence length of L.

satisfy:

2. When the number of RBs N _RB used by PUCCH format 1 >threshold K, or equivalently, when the sequence length L of PUCCH format 1 >threshold K·N _RB ,

The cycle length corresponding to W RB lengths is

satisfy:

where e is a natural constant,

Indicates a Low PAPR sequence type 1 sequence with a sequence length of L and

The sequence length of is L;

In addition, the 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.

Optionally, K=9 or 10.

optional,

Among them δ ₂ , δ ₃ , δ ₅ are non-negative integers.

In a possible implementation manner, 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.

Specifically, when the PUCCH format 1 sequence or the DMRS sequence of PUCCH format 1 meets the condition of using short sequence cyclic extension, and when

When it is Low PAPR sequence type 1, it satisfies:

Note that 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.

When W=1,

It can be PUCCH format 1 or the index of each RB of the DMRS sequence of PUCCH format 1. When W=2, one RBG consists of 2 RBs,

It can be PUCCH format 1 or the index of each RBG of the DMRS sequence of PUCCH format 1.

Based on the technical solution shown in Embodiment 9, 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. In addition, while ensuring the coverage of PUCCH format 1, 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.

Among them, 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;

Definitions of relevant parameters include:

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;

is the number of subcarriers contained in one RB, in NR system

δ=1;

The following will target

Different implementations are described.

case one,

1. When the number of RBs N _RB used by PUCCH format 4 ≤ threshold K, or equivalently, when the DMRS sequence length L of PUCCH format 4 ≤ threshold K·N _RB ,

It consists of a Low PAPR sequence type 1 sequence with a sequence length of L.

satisfy:

2. When the number of RBs N _RB used by PUCCH format 4 > threshold K, or equivalently, when the DMRS sequence length L of PUCCH format 4 > threshold K·N _RB ,

The cycle length corresponding to W RB lengths is

satisfy:

where e is a natural constant,

Indicates a Low PAPR sequence type 1 sequence with a sequence length of L and

The sequence length of is L;

Optionally, K=9 or 10.

case two,

It is Low PAPR sequence type 2.

Consists of Low PAPR sequence type 2 sequence with sequence length L

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 2 sequence of , the mathematical expression is as follows:

in,

Represents a Low PAPR sequence type2 sequence and

The sequence length of is L,

is the number of subcarriers occupied by one RB. In addition, that is, W is an integer greater than 0 and less than K.

Optionally, K=9 or 10.

optional,

Among them δ ₂ , δ ₃ , δ ₅ are non-negative integers.

Optionally, when PUCCH format 4 uses an uplink single carrier waveform, the DMRS sequence of PUCCH format 4 is obtained by the above method.

Optionally, when PUCCH format 4 uses the uplink single carrier waveform as DFT-s-OFDM, the DMRS sequence r(n) of PUCCH format 4 is obtained by the above method.

Optionally, when 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.

In a possible implementation manner, the aforementioned DMRS sequence of PUCCH format 4 can be further optimized to reduce the PAPR of the DMRS sequence of PUCCH format 4.

Specifically, when the DMRS sequence of PUCCH format 4 satisfies the condition of using short sequence cyclic extension, and when

When it is Low PAPR sequence type 1, it satisfies:

Note that 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.

When W=1,

It can be the index of each RB of PUCCH format 4. When W=2, one RBG consists of 2 RBs,

It can be the index of each RBG in PUCCH format 4.

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 α of every W RBs is the same, and the value of the cyclic shift parameter α of different W RBs is different, that is, the value of α is a randomly generated QPSK symbol. When W=1,

It can be the index of each RBG in PUCCH format 4.

In a possible implementation manner, 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.

Specifically, when the DMRS sequence of PUCCH format 4 satisfies the condition of using short sequence cyclic extension, DFT precoding is performed on the control information at a granularity of W RBs to form multiple DFT processing subunits. Note that 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:

Satisfaction of relevant parameters:

is a processing result obtained by processing the control information at least through conversion precoding (for example, scrambling, modulation, block-wise spreading, etc.), and n is the position index of the processing result;

e ^jαn is the coefficient of the cyclic shift; α is the cyclic shift parameter;

is the result after cyclic shift processing;

Optionally, the result after cyclic shift processing (ie

) needs to be mapped to resources occupied by the PUCCH for transmission.

When W=1,

It can be the index of each RBG in PUCCH format 4.

Based on the technical solution shown in Embodiment 10, 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. In addition, while ensuring the coverage of PUCCH format 4, it improves the ability of flexible multiplexing and system capacity.

In addition, through the technical solutions shown in Embodiment 6 to Embodiment 10, 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 .

The present application has been described above from the perspective of the method, and the devices involved in the present application will be introduced below.

Please refer to FIG. 5 , which 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.

As shown in FIG. 5 , the communication device 500 includes a processing unit 501 and a transceiver unit 502 .

In an implementation manner, 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.

P(n)=S(n mod A),n=0,...,L-1;

In a possible implementation, the length of the second sequence satisfies:

is the number of subcarriers occupied by one RB.

N _RB is the number of RBs of the first resource,

is the number of subcarriers occupied by one RB.

In a possible implementation, the second sequence is Low PAPR sequence type 1, and the Low PAPR sequence type 1 satisfies:

Wherein, r is the second sequence,

In a possible implementation, the α satisfies:

in,

is the number of subcarriers occupied by one RB,

is the index value of the second resource.

In one possible implementation,

The cyclic shift parameters include randomly generated parameters; or,

In one possible implementation,

Wherein, r is the second sequence,

It is the base sequence of Low PAPR sequence type 2 sequence.

In one possible implementation,

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.

In one possible implementation,

In a possible implementation manner, the modulation manner of the single carrier waveform is DFT-s-OFDM.

In an implementation manner, 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.

P(n)=S(n mod A),n=0,...,L-1;

In a possible implementation, the length of the second sequence satisfies:

is the number of subcarriers occupied by one RB.

N _RB is the number of RBs of the first resource,

is the number of subcarriers occupied by one RB.

Wherein, r is the second sequence,

In a possible implementation, the α satisfies:

in,

is the number of subcarriers occupied by one RB,

is the index value of the second resource.

In one possible implementation,

The cyclic shift parameters include randomly generated parameters; or,

In one possible implementation,

Wherein, r is the second sequence,

It is the base sequence of Low PAPR sequence type 2 sequence.

In a possible implementation manner of the third aspect, the device further includes:

In a possible implementation manner of the fourth aspect, the device further includes:

In one possible implementation,

It should be noted that, for the information execution process and corresponding technical effects of the above-mentioned units of the communication device 500 , please refer to the description in the foregoing method embodiment of the present application for details, and details are not repeated here.

Please refer to FIG. 6 , which 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.

In addition, 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. Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

It should be noted that 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.

Please refer to Figure 7, which 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. For example, 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.

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. Those skilled in the art can understand that 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 . Optionally, the memory 712 may be integrated with the processor 711, for example, integrated into one chip. Wherein, 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. Specifically, one or more antennas 715 can receive radio frequency signals, and 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. In addition, 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. Specifically, 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. Optionally, the device used to realize the receiving function in the transceiver unit can be regarded as a receiving unit, and 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.

It should be noted that 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. When the computer-executable instructions are executed by a processor, 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. 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. When the computer program product is executed by the processor, 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. When the computer program product is executed by the processor, 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. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor. In a possible design, 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. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor. In a possible design, 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.

An embodiment of the present application also provides a communication system, where the network system architecture includes the terminal device and the network device in any of the foregoing embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, 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.

In addition, 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. Based on this understanding, 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. .

The above is only the specific implementation of the embodiment of the present application, but the scope of protection of the embodiment of the present application is not limited thereto. Anyone familiar with the technical field can easily Any changes or substitutions that come to mind should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be based on the protection scope of the claims.

Claims

A communication method, characterized in that, comprising:

generating 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 a 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;

sending the first sequence, where the first sequence is carried on the first channel.
A communication method, characterized in that, comprising:

Receiving 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 in the When the number of RBs of the first resource is greater than a 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 first sequence is parsed.
The method according to claim 1 or 2, wherein the first sequence is a sequence obtained by cyclically extending the second sequence to satisfy:

P(n)=S(n mod A),n=0,...,L-1;

Wherein, 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, and A is less than L, mod indicates a remainder operation, and n is a sequence index.
The method according to any one of claims 1 to 3, wherein the second sequence is determined based on the number of subcarriers included in the second resource, and the second resource is used to carry the second sequence.
The method according to claim 4, wherein the length of the second sequence satisfies:

Wherein, 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 method according to any one of claims 1 to 5, wherein when the number of RBs in the first resource is not greater than the first threshold, the first sequence is based on the first resource. Determined by the number of subcarriers included.
The method according to claim 6, wherein when the number of RBs of the first resource is not greater than the first threshold, 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 method according to any one of claims 1 to 7, wherein the second sequence is a low peak-to-average power ratio type-Low PAPR sequence type 1, and the Low PAPR sequence type 1 satisfies:

Wherein, r is the second sequence,
is the base sequence of the Low PAPR sequence type 1 sequence, α represents a cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.
The method according to claim 8, wherein the α satisfies:

in,
is the number of subcarriers occupied by one RB,
is the index value of the second resource.
The method according to claim 8 or 9, characterized in that,

The cyclic shift parameters include randomly generated parameters; or,

The cyclic shift parameter is associated with an index value of the second resource.
The method according to any one of claims 8 to 10, characterized in that,

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 a sequence corresponding to the same communication device.
The method according to any one of claims 1 to 7, wherein the second sequence is Low PAPR sequence type 2, and the Low PAPR sequence type 2 satisfies:

Wherein, r is the second sequence,
It is the base sequence of Low PAPR sequence type 2 sequence.
The method according to any one of claims 1 to 12, characterized in that the value of the first threshold is 9 or 10.
According to the method according to any one of claims 1, 3 to 13, the method further comprises:

Sending first indication information, where the first indication information is used to indicate enabling switch precoding of the first channel.
The method according to any one of claims 2 to 13, further comprising:

receiving first indication information, where the first indication information is used to indicate enabling switch precoding of the first channel.
The method according to any one of claims 1 to 15, characterized in that,

The first channel is a physical uplink control channel PUCCH, wherein the first sequence is a format 0 sequence carried in the PUCCH; or,

The first channel is a physical uplink control channel PUCCH, wherein 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 DMRS sequence of 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 method according to any one of claims 1 to 16, wherein 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 in the first resource is a positive integer multiple of 5 or the number of RBs in the first resource is 1.
The method according to any one of claims 1 to 17, wherein the first sequence is carried on the first channel modulated by a single carrier waveform.
The method according to claim 18, characterized in that, the modulation method of the single carrier waveform is discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-s-OFDM).
A communication device, characterized by comprising 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 the number of RBs of the first resource is When the number 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 transceiver unit is configured to send the first sequence, and the first sequence is carried on the first channel.
A communication device, characterized by comprising 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 equal to the resource block RB of the first resource occupied by the first channel The numbers are positively correlated, and when the number of RBs of the first resource is greater than a 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 device according to claim 20 or 21, wherein the first sequence is a sequence obtained by performing cyclic extension on the second sequence to satisfy:

P(n)=S(n mod A),n=0,...,L-1;

Wherein, 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, and A is less than L, mod indicates a remainder operation, and n is a sequence index.
The device according to any one of claims 20 to 22, wherein the second sequence is determined based on the number of subcarriers included in the second resource, and the second resource is used to carry the second sequence.
The device according to claim 23, wherein the length of the second sequence satisfies:

Wherein, 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 device according to any one of claims 20 to 24, wherein when the number of RBs in the first resource is not greater than the first threshold, the first sequence is based on the first resource. Determined by the number of subcarriers included.
The device according to claim 25, wherein when the number of RBs of the first resource is not greater than the first threshold, 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 device according to any one of claims 20 to 26, wherein the second sequence is a low peak-to-average power ratio type-Low PAPR sequence type 1, and the Low PAPR sequence type 1 satisfies:

Wherein, r is the second sequence,
is the base sequence of the Low PAPR sequence type 1 sequence, α represents a cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.
The device according to claim 27, wherein the α satisfies:

in,
is the number of subcarriers occupied by one RB,
is the index value of the second resource.
Apparatus according to claim 27 or 28, characterized in that

The cyclic shift parameters include randomly generated parameters; or,

The cyclic shift parameter is associated with an index value of the second resource.
Apparatus according to any one of claims 27 to 29, wherein

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 a sequence corresponding to the same communication device.
The device according to any one of claims 20 to 26, wherein the second sequence is Low PAPR sequence type 2, and the Low PAPR sequence type 2 satisfies:

Wherein, r is the second sequence,
It is the base sequence of Low PAPR sequence type 2 sequence.
The device according to any one of claims 20 to 31, wherein the value of the first threshold is 9 or 10.
The device according to any one of claims 20, 22 to 32, wherein the device further comprises:

Sending first indication information, where the first indication information is used to indicate enabling switch precoding of the first channel.
The device according to any one of claims 21 to 32, wherein the device further comprises:

receiving first indication information, where the first indication information is used to indicate enabling switch precoding of the first channel.
Apparatus according to any one of claims 20 to 34, characterized in that

The first channel is a physical uplink control channel PUCCH, wherein the first sequence is a format 0 sequence carried in the PUCCH; or,

The first channel is a physical uplink control channel PUCCH, wherein 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 DMRS sequence of 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 device according to any one of claims 20 to 35, wherein the number of RBs in the first resource is a positive integer multiple of 2, or the number of RBs in the first resource is a positive integer multiple of 3, or The number of RBs in the first resource is a positive integer multiple of 5 or the number of RBs in the first resource is 1.
The device according to any one of claims 20 to 36, wherein the first sequence is carried on the first channel modulated by a single carrier waveform.
The device according to claim 37, wherein the modulation method of the single carrier waveform is discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-s-OFDM).
A communication device, characterized by comprising:

processor and memory;

The memory is used to store program instructions;

The processor is configured to execute the program instructions to enable the communication device to implement the method according to any one of claims 1-19.
A computer-readable storage medium, the computer-readable storage medium is used to store computer programs or instructions, characterized in that, when the computer program or the instructions are run on the computer, the computer can execute the The method described in any one of 1 to 19.