CN115706615A - Communication method and communication device - Google Patents

Abstract

The application provides a communication method and a communication device, which are used for providing a construction mode of a sequence on a large bandwidth resource, and reducing the implementation complexity and saving the overhead by a cyclic extension mode when the number of RBs of a first resource for bearing the sequence is large, and improving the communication efficiency. In the method, a communication device generates a first sequence, wherein the sequence length of the first sequence is positively correlated with the number of RBs of a first resource occupied by a first channel, and when the number of RBs of the first resource is greater than a first threshold, the first sequence is a sequence obtained by circularly expanding a 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 in the first channel.

Description

Communication method and communication device

Technical Field

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

Background

With the increasing demand of people for material culture, more and more scenes need the support of higher transmission rate. In order to meet the traffic transmission rate requirement, large bandwidth support is usually required. Due to the limited size of the bandwidth resources available for low frequency band wireless systems, wireless systems are constantly evolving towards higher frequency bands.

Currently, in a low-frequency band wireless communication system, a signal transmitting device may transmit a sequence on a wireless channel to carry information to be transmitted through the sequence. Accordingly, the signal receiving device may receive the sequence over the wireless channel, and obtain the information carried by the sequence by parsing the received sequence. The wireless channel may include a data channel, a control channel, etc., among others.

However, the sequences currently transmitted over the wireless channel are constructed based on a smaller bandwidth resource (e.g., one Resource Block (RB)) in a low frequency band communication system. In a communication system with a high frequency band, the bandwidth resources (e.g., a plurality of RBs) available between different devices are large, which results in that the sequence constructed based on the small bandwidth resources is no longer applicable.

Therefore, how to implement the structure of the sequence in a large bandwidth resource is a technical problem to be solved urgently.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for providing a construction mode of a sequence on a large bandwidth resource, and reducing implementation complexity and saving cost through a circular expansion mode and improving communication efficiency when the number of RBs of a first resource for bearing the sequence is large.

A first aspect of the present application provides a communication method, which may be executed by a communication apparatus, or may be executed by a component (e.g., a processor, a chip, a system of chips, or the like) of the communication apparatus, or may be implemented by a logic module or software capable of implementing all or part of the functions of the communication apparatus, and in the first aspect and possible implementations thereof, the communication method is described as being executed by a sending device as an example. In the method, a communication device generates a first sequence, wherein the sequence length of the first sequence is positively correlated with the number of RBs of a first resource occupied by a first channel, and when the number of RBs of the first resource is greater than a first threshold, the first sequence is a sequence obtained by circularly expanding a 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 in the first channel.

Based on the above technical solution, in a first sequence carried on a first channel and sent by a communication device, a sequence length of the first sequence is positively correlated to the number of resource blocks, RBs, of a first resource occupied by the first channel, 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 a second sequence. Compared with the sequence constructed by the smaller bandwidth resource (for example, one RB) in the communication system based on the low frequency band, which is currently transmitted on the wireless channel, the first sequence is transmitted on the first channel based on the first resource, the number of RBs of the first resource is greater than the first threshold, and the first threshold is greater than or equal to 1, that is, the first sequence constructed by the larger bandwidth resource is transmitted on the first channel, and the first sequence is a cyclically extended sequence of the second sequence. Therefore, a construction mode of the sequence on the large bandwidth resource is provided, and when the number of RBs of the first resource for bearing the sequence is large, the implementation complexity is reduced and the overhead is saved in a cyclic extension mode, and the communication efficiency is improved.

The communication device for generating the first sequence may also be referred to as a sending device, and specifically may be a network device or a terminal device.

Furthermore, the generation sequence may also be expressed as a production sequence, a construction sequence, or the like.

A second aspect of the present application provides a communication method, which may be executed by a communication apparatus, or may be executed by a component (such as a processor, a chip, a system of chips, or the like) of the communication apparatus, or may be implemented by a logic module or software that can implement all or part of the functions of the communication apparatus, and in the first aspect and possible implementations thereof, the communication method is described as being executed by a sending device as an example. In the method, a communication device receives a first sequence, wherein the first sequence is carried in a first channel; the sequence length of the first sequence is positively correlated with the number of Resource Blocks (RBs) of a 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 circularly expanding a 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 a first sequence carried on a first channel and received by a communication device, a sequence length of the first sequence is positively correlated to the number of resource blocks RB of a 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 cyclically extending a second sequence. Compared with the sequence constructed by the smaller bandwidth resource (for example, one RB) in the communication system based on the low frequency band, which is currently transmitted on the wireless channel, the first sequence is transmitted on the first channel based on the first resource, the number of RBs of the first resource is greater than the first threshold, and the first threshold is greater than or equal to 1, that is, the first sequence constructed by the larger bandwidth resource is transmitted on the first channel, and the first sequence is a cyclically extended sequence of the second sequence. Therefore, a construction mode of the sequence on the large bandwidth resource is provided, and when the number of RBs of the first resource for bearing the sequence is large, the implementation complexity is reduced and the overhead is saved in a cyclic extension mode, and the communication efficiency is improved.

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 first sequence is a cyclic extension of the second sequence, and the cyclic extension satisfies the following conditions:

P(n)＝S(n mod A),n＝0,…,L-1；

wherein P is the first sequence, and L is the length of the first sequence; s is the second sequence, A is the length of the second sequence, A is smaller than L, mod indicates the remainder operation, and n is the sequence index.

Based on the above technical solution, when the number of RBs of the first resource for carrying 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. A specific implementation 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 a second resource, and the second resource is used for carrying the second sequence.

Based on the above technical solution, the length of the second sequence is determined by the number of subcarriers included in the second resource for carrying the second sequence, and specifically, the length of the second sequence is positively correlated to the number of subcarriers. That is, the larger the number of subcarriers included in the second resource is, the larger the length value of the second sequence is; 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 manner 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,

the number of subcarriers occupied by one RB.

In a possible implementation manner 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 determined based on the number of subcarriers included in the first resource.

Based on the above technical solution, when the number of RBs of the first resource for carrying the first sequence is not greater than the first threshold, the first sequence constructed based on the smaller bandwidth resource is transmitted on the first channel. The length of the first sequence is determined by the number of subcarriers included in a first resource for carrying the first sequence, and specifically, the length of the first sequence is positively correlated to the number of subcarriers. That is, the larger the number of subcarriers included in the first resource is, the larger the length value of the first sequence is; conversely, the smaller the number of subcarriers included in the first resource, the smaller the length value of the first sequence.

In a possible implementation manner 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 of a length of

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

the number of subcarriers occupied by one RB.

In a possible implementation manner of the first aspect or the second aspect, the second sequence is a Low peak to average power ratio type one (Low PAPR sequence type 1), and the Low PAPR sequence type1 satisfies:

wherein r is the second sequence,

for the base sequence of the Low PAPR sequence type1 sequence, α represents a cyclic shift parameter, e is a natural constant, j is an imaginary 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, and specifically may be a Low PAPR sequence type1 sequence. In other words, when the number of RBs of the first resource for carrying the sequence is large, the second sequence 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 the coverage requirement.

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

wherein the content of the first and second substances,

the number of sub-carriers occupied by one RB,

is the index value of the second resource.

Based on the foregoing technical solution, it can be known from the foregoing description that the parameter α in the Low PAPR sequence type1 sequence is associated with an index value for carrying the second resource of the second sequence, and specifically, the index value is a frequency domain index value. Therefore, the parameter α in different Low PAPR sequence type1 sequences can be determined based on different frequency domain index values of the second resource, different second sequences can be constructed based on different frequency domain index values of the second resource, and indication of multi-stream multiplexing and/or multi-user multiplexing can be realized through multiple combination modes of different second sequences.

In a possible implementation form of the first aspect or the second aspect, the cyclic shift parameter comprises 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 achieve determination of multiple cyclic shift parameters. Different second sequences may be constructed based on different cyclic shift parameters, and the indication of multi-stream multiplexing and/or multi-user multiplexing may be achieved in a variety of combinations of different second sequences.

Alternatively, the randomly generated parameters may include Quadrature Phase Shift Keying (QPSK) symbols, binary Phase Shift Keying (BPSK) symbols, or other parameters.

In a possible implementation manner 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 different values of the cyclic shift parameter are used for indicating 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 type1 sequence, because cyclic shift parameters in the Low PAPR sequence type1 sequence may have a plurality of different values, different cyclic shift parameters construct different second sequences, and different first sequences may be obtained by a plurality of combination ways of the different second sequences, and multi-stream multiplexing and/or multi-user multiplexing is realized by the different first sequences.

In a possible implementation manner of the first aspect or the second aspect, the second sequence is a Low peak to average power ratio type two Low PAPR sequence type2, and the Low PAPR sequence type2 satisfies:

wherein r is the second sequence,

is a base sequence of a Low PAPR sequence type2 sequence.

Based on the above technical solution, the second sequence may be a peak to average power ratio (PAPR) sequence, and specifically may be a Low PAPR sequence type2 sequence. In other words, when the number of RBs of the first resource for carrying the sequence is large, the second sequence 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 the coverage requirement.

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

Based on the above technical solution, the first threshold may be a value greater than 1, and specifically, the value of the first threshold may be 9 or 10. Therefore, when the number of RBs in the first resource is greater than 9 or 10, the first sequence is a sequence obtained by cyclically extending the second sequence.

In a possible implementation manner of the first aspect, the method further includes: transmitting first indication information indicating that transform precoding (transformat precoding) of the first channel is enabled; or, the first indication information is used to indicate that when data is carried on the first channel where the first sequence is located, the data is subjected to transform precoding.

Based on the above technical solution, when the communication apparatus for sending the first sequence is a sending device, the sending device may further send first indication information to indicate that transform precoding of the first channel is enabled, where the transform precoding that enables the first channel indicates that Discrete Fourier Transform (DFT) transform is performed on data carried on the first channel, so as to obtain frequency domain data.

In one possible implementation manner of the second aspect, the method further includes: receiving first indication information, wherein the first indication information is used for indicating that the conversion precoding of the first channel is enabled; or, the first indication information is used to indicate that when data is carried on the first channel where the first sequence is located, the data is subjected to transform precoding.

Based on the foregoing technical solution, when the communication apparatus for receiving the first sequence is a receiving device, the receiving device may further receive first indication information, which is used to indicate that transform precoding of the first channel is enabled, where the transform precoding that enables the first channel indicates that Discrete Fourier Transform (DFT) transform is performed on data carried on the first channel, so as to obtain frequency domain data.

In one possible implementation form of the first or second aspect,

the first channel is a Physical Uplink Control Channel (PUCCH), where the first sequence is a sequence of format0 (PUCCH format 0) carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format1 (PUCCH format 1) carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a demodulation reference signal (DMRS) of a format1 (PUCCH format 1) carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a DMRS of a format4 (PUCCH format 4) carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Downlink Shared Channel (PDSCH), wherein the first sequence is a sequence of a DMRS carried in the PDSCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Shared Channel (PUSCH), where the first sequence is a sequence of a 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, and the larger the number of RBs of the first resource occupied by the first channel is, the larger the sequence length value of the first sequence is; conversely, the smaller the number of RBs of the first resource occupied by the first channel is, the smaller the sequence length value of the first sequence is. In other words, the sequence length of the first sequence and the number of RBs of the first resource occupied by the first channel may be in a direct proportional relationship. While in different implementations of the first channel the coefficients of the direct proportional relationship may be different. For example, when the sequence carried on the first channel is in a comb structure, the coefficient of the direct proportional relationship may be smaller than 1, for example, 0.1, 0.3, 0.5 or other values, which is not limited herein. As another example, when the sequence carried on the first channel is not in a comb structure, the coefficient of the direct proportional relationship may be equal to 1.

In a possible implementation manner of the first aspect or the second aspect, the number of RBs of the first resource is a positive integer multiple of 2, the number of RBs of the first resource is a positive integer multiple of 3, the number of RBs of the first 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 in the first channel subjected to a modulation manner of a single-carrier waveform.

Based on the above technical solution, the first sequence may be specifically carried on the first channel passing through the modulation mode of the single carrier waveform, and compared with the problem of a larger PAPR in the modulation mode of the multi-carrier waveform, the modulation mode using the single carrier waveform may reduce the PAPR and provide a larger output power and a higher power amplifier efficiency, thereby achieving the purpose of improving coverage and reducing energy consumption.

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

Alternatively, the modulation scheme of the single-carrier waveform may be a single-carrier waveform such as single carrier-QAM (quadrature amplitude modulation, SC-QAM).

A third aspect of the present application provides a communication apparatus, comprising a processing unit and a transceiving unit;

the processing unit is configured to generate a first sequence, where a sequence length of the first sequence is positively correlated to the number of resource blocks RB of a first resource occupied by a 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 a second sequence, and the first threshold is greater than or equal to 1;

the transceiver is configured to transmit the first sequence, where the first sequence is carried in the first channel.

A fourth aspect of the present application provides a communication apparatus, including a processing unit and a transceiving unit;

the receiving and sending unit is used for receiving a first sequence, and the first sequence is loaded on the first channel; the sequence length of the first sequence is positively correlated with the number of Resource Blocks (RBs) of a 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 circularly expanding a second sequence, and the first threshold is greater than or equal to 1;

the processing unit is used for analyzing the first sequence.

In a possible implementation manner of the third aspect or the fourth aspect, the first sequence obtained by cyclically extending 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, A is smaller than L, mod indicates the remainder operation, and n is the sequence index.

In a possible implementation manner of the third aspect or the fourth aspect, the second sequence is determined based on a number of subcarriers included in a second resource, and the second resource is used for carrying the second sequence.

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

the number of subcarriers occupied by one RB.

In a possible implementation manner 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 determined based on the number of subcarriers included in the first resource.

In a possible implementation manner 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 has a length of

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

the number of subcarriers occupied by one RB.

In a possible implementation manner of the third aspect or the fourth aspect, the second sequence is a Low PAPR sequence type1, and the Low PAPR sequence type1 satisfies:

wherein r is the second sequence,

alpha is a cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.

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

wherein, the first and the second end of the pipe are connected with each other,

the number of sub-carriers occupied by one RB,

is the index value of the second resource.

In one possible implementation form of the third aspect or the fourth aspect,

the cyclic shift parameter comprises a randomly generated parameter; or the like, or, alternatively,

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

In one possible implementation form of the third aspect or the fourth aspect,

different values of the cyclic shift parameter are used for indicating that the second sequence is a sequence corresponding to the same data stream; and/or the presence of a gas in the gas,

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 manner of the third aspect or the fourth aspect, the second sequence is a Low peak to average power ratio type two Low PAPR sequence type2, and the Low PAPR sequence type2 satisfies:

wherein r is the second sequence,

is a base sequence of a Low PAPR sequence type2 sequence.

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

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

and sending first indication information, wherein the first indication information is used for indicating that the switching precoding of the first channel is enabled.

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

first indication information is received, wherein the first indication information is used for indicating that the conversion precoding of the first channel is enabled.

In one possible implementation form of the third aspect or the fourth aspect,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format0 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format1 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a demodulation reference signal (DMRS) of a format1 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a DMRS sequence of a format4 carried in the PUCCH; or the like, or, alternatively,

the first channel is a physical downlink data channel (PDSCH), wherein the first sequence is a sequence of a DMRS (demodulation reference signal) borne in the PDSCH; or the like, or a combination thereof,

the first channel is a physical uplink data channel (PUSCH), wherein the first sequence is a sequence of a DMRS carried in the PUSCH.

In a possible implementation manner of the third aspect or the fourth aspect, the number of RBs of the first resource is a positive integer multiple of 2, the number of RBs of the first resource is a positive integer multiple of 3, the number of RBs of the first 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 in the first channel that is subjected to a modulation manner of a single-carrier waveform.

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

A fifth aspect of embodiments of the present application provides a communication apparatus, including at least one logic circuit and an input/output interface;

the input/output interface is used for outputting a first sequence;

the logic circuit is configured to perform a method as set forth in the first aspect or any one of the possible implementations of the first aspect.

A sixth aspect of embodiments herein provides a communications apparatus, comprising at least one logic circuit and an input-output interface;

the input/output interface is used for inputting a first sequence;

the logic circuit is configured to perform a method according to any one of the second aspect or the second possible implementation manner.

A seventh aspect of embodiments of the present application provides a computer-readable storage medium storing one or more computer-executable instructions that, when executed by a processor, cause the processor to perform the method according to the first aspect or any one of the possible implementations of the first aspect; alternatively, when the computer executable instructions are executed by a processor, the processor performs the method according to the second aspect or any one of the possible implementations of the second aspect.

An eighth aspect of the embodiments of the present application provides a computer program product (or computer program) storing one or more computers, where when the computer program product is executed by a processor, the processor executes the method of the first aspect or any one of the possible implementation manners of the first aspect; alternatively, the computer program product, when executed by the processor, performs the method of the second aspect or any one of the possible implementations of the second aspect.

A ninth aspect of the present embodiment provides a chip system, where the chip system includes at least one processor, and is configured to support a communication device to implement the functions in the first aspect or any one of the possible implementation manners of the first aspect.

In one possible design, the system-on-chip may further include a memory, which stores program instructions and data necessary for the communication device. The chip system may be constituted by a chip, or may include a chip and other discrete devices. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data to the at least one processor.

A tenth aspect of an embodiment of the present application provides a communication system including the communication apparatus of the third aspect and the communication apparatus of the fourth aspect; alternatively, the communication system includes the communication apparatus of the fifth aspect and the communication apparatus of the sixth aspect.

For technical effects brought by any one of the design manners in the third aspect to the tenth aspect, reference may be made to the technical effects brought by different implementation manners in the first aspect and the second aspect, and details are not repeated here.

It will be appreciated that for components in the device, the "sending" described above may be referred to as "outputting" and the "receiving" may be referred to as "inputting".

It can be seen from the above technical solutions that, in a first sequence carried on a first channel and transmitted or received by a communication device, a sequence length of the first sequence is positively correlated with a number of resource blocks RB of a 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 cyclically extending a second sequence. Compared with the sequence constructed by the smaller bandwidth resource (for example, one RB) in the communication system based on the low frequency band currently transmitted on the wireless channel, the first sequence is transmitted on the first channel based on the first resource, the number of RBs of the first resource is greater than the first threshold, and the first threshold is greater than or equal to 1, that is, the first sequence constructed by the larger bandwidth resource is transmitted on the first channel, and the first sequence is a cyclically extended sequence of the second sequence. Therefore, a construction mode of the sequence on the large bandwidth resource is provided, and when the number of RBs of the first resource for bearing the sequence is large, the implementation complexity is reduced and the overhead is saved in a cyclic extension mode, and the communication efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of a communication system provided herein;

fig. 2 is a schematic diagram of a terminal device provided in the present application;

FIG. 3 is a schematic diagram of a network device provided herein;

FIG. 4 is a schematic diagram of a communication method provided herein;

FIG. 5 is a schematic diagram of a communication device provided herein;

FIG. 6 is another schematic diagram of a communication device provided herein;

fig. 7 is another schematic diagram of a communication device provided herein.

Detailed Description

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

First, some terms in the embodiments of the present application are explained so as to be easily understood by those skilled in the art.

(1) Terminal equipment (or called terminal, user terminal, end user, etc.): may be a wireless terminal device capable of receiving network device scheduling and indication information, which may be a device providing voice and/or data connectivity to a user, or a handheld device having wireless connection capability, or other processing device connected to a wireless modem.

A terminal may communicate with one or more core networks or the internet via a Radio Access Network (RAN), and may be a mobile terminal device such as a mobile telephone (or called a "cellular" phone), a computer, and a data card, such as a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, that exchanges languages and/or data with the RAN. Examples of the wireless communication devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), tablet computers (pads), and computers with wireless transceiving functions. A wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a Mobile Station (MS), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a Subscriber Station (SS), a user terminal device (CPE), a terminal (terminal), a User Equipment (UE), a 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 Public Land Mobile Network (PLMN) for future evolution, and the like.

In addition, the terminal according to the present application may be widely applied to various scenarios, for example, device-to-device (D2D), vehicle-to-object (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, auto-driving, remote medical treatment, smart grid, smart furniture, smart office, smart wearing, smart transportation, smart city, and the like. The terminal can be cell-phone, panel computer, take the computer of wireless transceiving function, wearable equipment, vehicle, unmanned aerial vehicle, helicopter, aircraft, steamer, robot, arm, intelligent house equipment etc.. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal.

(2) A network device: may be a device in a wireless network, for example, a network device may be a Radio Access Network (RAN) node (or device) that accesses a terminal device to the wireless network, which may also be referred to as a base station. Currently, some examples of RAN equipment are: a new generation base station (gbodeb), a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., a home evolved Node B or a home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wi-Fi) Access Point (AP) in a 5G communication system. In addition, in one network configuration, the network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node.

Furthermore, the network device may also include a core network device, which includes, for example, an access and mobility management function (AMF), a User Plane Function (UPF), a Session Management Function (SMF), or the like.

In this application, the network device may be other apparatuses that provide wireless communication functions for the terminal device, where possible. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.

In this application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, for example, a system on chip, and the apparatus may be installed in the network device. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a network device is taken as an example, and the technical solution provided in the embodiment of the present application is described.

(3) Configuration and pre-configuration: in the application, both configuration and pre-configuration are used.

The configuration means that the base station or the server sends configuration information of some parameters or values of the parameters to the terminal through messages or signaling, so that the terminal determines communication parameters or resources during transmission according to the values or the information.

The pre-configuration is similar to the configuration, and can be a mode that a base station or a server sends parameter information or values to a terminal; or corresponding parameters or parameter values may be defined, or related parameters or values may be written in the terminal device in advance. This is not limited in this application. Further, these values and parameters may be changed or updated.

(4) The terms "system" and "network" may be used interchangeably in this application. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a alone, A and B together, and B alone, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. And, unless specifically stated otherwise, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the order, sequence, priority, or importance of the plurality of objects.

It should be noted that the technical solution in the embodiment of the present application is applicable to a communication system in which ground communication and satellite communication are merged, and the communication system may also be referred to as a non-terrestrial network (NTN) communication system. The terrestrial communication system may be, for example, a Long Term Evolution (LTE) system, a Universal Mobile Telecommunications System (UMTS), a 5G communication system, a New Radio (NR) system, or a communication system developed in the next step of the 5G communication system, and the like, which is not limited herein.

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 some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic architecture diagram of a communication system 1000 to which an embodiment of the present application is applied.

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 further include an internet 300. The radio access network 100 may include at least one radio access network device (e.g., 110a and 110b in fig. 1) and may further include at least one terminal (e.g., 120a-120j in fig. 1). In addition, the radio access network device may be a macro base station (e.g., 110a in fig. 1), a micro base station or an indoor station (e.g., 110b in fig. 1), a relay node or a donor node, and the like. It is to be understood that all or part of the functions of the radio access network device in the present application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform). The embodiments of the present application do not limit the specific technologies and the specific device forms adopted by the radio access network device. For convenience of description, the following description will be made with a base station as an example of the radio access network apparatus.

In the present application, the base station and the terminal may be fixed or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons and satellite vehicles. The embodiment of the application does not limit the application scenarios of the base station and the terminal.

The roles of base station and terminal may be relative, e.g., helicopter or drone 120i in fig. 1 may be configured to move the base station, for those terminals 120j that access radio access network 100 through 120i, terminal 120i is the base station; however, for the base station 110a, 120i is a terminal, i.e. the base station 110a and 120i communicate with each other via a wireless air interface protocol. Of course, 110a and 120i may communicate with each other through an interface protocol between the base station and the base station, and in this case, 120i is also the base station as compared to 110 a. Therefore, the base station and the terminal may be collectively referred to as a communication apparatus, 110a and 110b in fig. 1 may be referred to as a communication apparatus having a base station function, and 120a to 120j in fig. 1 may be referred to as a communication apparatus having a terminal function.

The base station and the terminal, the base station and the base station, and the terminal can communicate through a licensed spectrum, an unlicensed spectrum, or both; communication may be performed in a frequency spectrum of 6 gigahertz (GHz) or less, in a frequency spectrum of 6GHz or more, or in a frequency spectrum of 6GHz or less and in a frequency spectrum of 6GHz or more. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

In the embodiment of the present application, the functions of the base station may also be performed by a module (e.g., a chip) in the base station, or may also be performed by a control subsystem including the functions of the base station. The control subsystem including the base station function may be a control center in an application scenario of the terminal, such as a smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal may also be performed by a module (e.g., a chip or a modem) in the terminal, or by a device including the functions of the terminal. It will be appreciated that all or part of the functionality of the base station may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g. a cloud platform).

In the present application, a base station sends a downlink signal (or downlink information) to a terminal, where the downlink signal (or downlink information) is carried on a downlink channel; the terminal sends an uplink signal (or uplink information) to the base station, and the uplink signal (or uplink information) is carried on an uplink channel.

In the network architecture corresponding to fig. 1, the hardware structure related to the relevant device includes a terminal device and a network device, and fig. 2 and fig. 3 are schematic diagrams of the hardware structures implemented by the terminal device and the network device, respectively. 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, the transceiver 203 including a transmitter 2031, a receiver 2032, and an antenna 2033. Receiver 1032 may be configured to receive transmission control information via antenna 1033, and transmitter 1031 may be configured to transmit transmission information to network device 20 via antenna 1033. The transmitter 2031 may be configured to transmit transmission control configuration information to the terminal device 10 via the antenna 2033, and the receiver 2032 may be configured to receive transmission information transmitted by the terminal device 10 via the antenna 2033.

For example, in the network architectures shown in fig. 1 to 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. Next, sequence configurations of Low PAPR sequence type1 and Low PAPR sequence type2 related to sequence configuration procedure in the radio system related to Low frequency band in the present application will be described.

1. Low PAPR sequence type1 sequence

Low PAPR sequence

Defined as a base sequence

Cyclic shift (cyclic shift) with a value of α, wherein the Low PAPR sequence type1 sequence satisfies:

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

It should be noted that in this embodiment and the following embodiments, there may be a plurality of implementation manners for the superscript δ. For example, when a Low PAPR sequence type1 sequence is carried in a data channel, the value is 1; for another example, when the Low PAPR sequence type1 sequence is carried in the control channel, the value is 1; for another example, when the Low PAPR sequence type1 sequence is carried in the data channel, the value is 0; for another example, when the Low PAPR sequence type1 sequence is carried in the control channel, the value is 0.

Denotes a Low PAPR sequence type1 sequence, e is a natural constant,

base sequence representing Low PAPR sequence type1 sequence, M _ZC Is the sequence length of the Low PAPR sequence type1 sequence, and

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

the number of subcarriers occupied by one RB.

It should be noted that the number of subcarriers occupied by one RB may be 12 or other values, and the number of subcarriers occupied by only one RB in this embodiment and the following embodiments may be 12 (that is, the number of subcarriers occupied by only one RB is 12)

) The description is given for the sake of example.

Based on the base sequence of the Low PAPR sequence type1 sequence, multiple sequences can be defined by different values of α and δ.

Furthermore, the base sequence

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

u∈{0,1,…,29}；

that is, u takes the value of an integer from 0 to 29.

In addition, the sequence number v is a number within a sequence group, and there are two cases:

1. when 1/2 is less than or equal to m/2 ^δ When the length is less than or equal to 5, each sequence group comprises a base sequence (v = 0) with the length of

2. When m/2 is more than or equal to 6 ^δ Each sequence set comprises two base sequences (v =0,1) of length

Base sequence

Is dependent on the sequence length (M) of the Low PAPR sequence type1 sequence _ZC ) The base sequence can be represented as

Will be described in the following for M _ZC Different values of (2) to the base sequence

The implementation of (a) is described:

implementation mode one, base sequence length M _ZC 36 or more. Namely at

Then, the base sequence satisfies:

x _q (m)＝exp(-jπqm(m+1)/N _ZC )；

length N _ZC Is less than M _ZC The maximum prime number of.

Implementation two, the base sequence length is less than 36, i.e., M _ZC E {6,12,18,24}, the base sequence satisfies:

wherein the content of the first and second substances,

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

In the alternative,

length of sequence of (1) and M _ZC Are equal in size.

Alternatively to this, the first and second parts may,

the sequence of (c) is related to the value of u.

Implementation mode three, M _ZC Where =30, the base sequence expression is as follows:

2. low PAPR sequence type2 sequence

Low PAPR sequence

Defined as a base sequence

Satisfies the following conditions:

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 is a preconfigured value or a configured value of the network device.

Indicates a Low PAPR sequence type2 sequence,

represents a base sequence of a Low PAPR sequence type2 sequence, M is a sequence length of the Low PAPR sequence type2 sequence, and

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

the number of subcarriers occupied by one RB.

Furthermore, the base sequence

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

u∈{0,1,…,29}；

that is, u takes the value of an integer from 0 to 29.

In addition, the sequence number v is the number within the sequence group, when 1/2 ≦ m/2 ^δ Each sequence group comprises a base sequence (v = 0) with a length of

Base sequence of Low PAPR sequence type2 sequence

Can be expressed as

Satisfies the following conditions:

wherein the content of the first and second substances,

is associated with a sequence length M, different values for M will be referred to the base sequence in the following

The implementation of (c) is described:

implementation mode one, when the length of the base sequence is more than or equal to 30, namely M is more than or equal to 30, the sequence

For complex modulation symbols, it can be obtained from pi/2-BPSK modulation applying Gold sequences.

In the second implementation mode, the length of the base sequence is less than 30, namely when M =6, the sequence

Satisfies the following conditions:

wherein

The pre-configured sequence or the network device configured sequence is represented by a table.

Alternatively to this, the first and second parts may,

the length of the sequence(s) is equal to the value of M _ ZC.

Alternatively to this, the first and second parts may,

the sequence of (c) is related to the value of u.

When the implementation mode is three, M is E {12,18,24}, the sequence

Can be obtained by pi/2-BPSK modulation.

With the increasing demand of people for material culture, more and more scenes need the support of higher transmission rate. In order to meet the traffic transmission rate requirement, large bandwidth support is usually required. Due to the limited size of the bandwidth resources available for low frequency band wireless systems, wireless systems are constantly evolving towards higher frequency bands. Currently, in a low frequency band wireless communication system, a signal transmitting device may transmit a sequence on a wireless channel to carry information to be transmitted through the sequence. Accordingly, the signal receiving device may receive the sequence over the wireless channel, and obtain the information carried by the sequence by parsing the received sequence. The wireless channel may include a data channel, a control channel, etc., among others.

Specifically, both the data channel and the control channel need to design a proper sequence to support multi-stream multiplexing or multi-user multiplexing. For a data channel, a DMRS sequence needs to be designed for multiflow multiplexing, different data streams are distinguished by the DMRS sequence, and the different data streams may be used to support single-user multiflow transmission or multi-user multiplexing transmission. For control channels, multi-user multiplexing requires a sequence to be designed according to the control channel format. The PUCCH format0 carries information bits by sequences, and distinguishes different users by sequences, thereby performing user multiplexing. The PUCCH format1 carries information bits by a sequence, and distinguishes different users by a sequence and a time domain orthogonal code, thereby performing user multiplexing. The PUCCH format4 carries information bits in a coding mode, and different users are distinguished through DMRS sequences for user multiplexing.

Exemplarily, in NR, a waveform used by a data channel and a sequence type employed by a DMRS are as shown in table 1.

TABLE 1

Illustratively, the types of sequences employed in the multiplexing design of the uplink control channel in NR are shown in table 2.

TABLE 2

The following describes various implementation procedures shown in table 1 and table 2 in combination with the sequence construction manner of the aforementioned Low PAPR sequence type1 sequence and Low PAPR sequence type2 sequence.

Embodiment one, sequence of DMRS for NR PDSCH shown in table 1.

As shown in table 1, the NR PDSCH supports only cyclic prefix (cyclic prefix orthogonal frequency division multiplexing, CP-OFDM) waveforms. The DMRS sequence of the PDSCH adopts a Gold sequence and is used for supporting multi-stream multiplexing or multi-user multiplexing.

However, the use of CP OFDM waveform in NR PDSCH leads to high PAPR, which easily leads to power backoff of Power Amplifier (PA), and reduces PA efficiency. In the high frequency band, the coverage area is degraded, and the capacity of the cell edge is limited. In addition, the DMRS of the NR PDSCH uses a Gold sequence, which causes a problem of high PAPR and makes it impossible to ensure a coverage.

Therefore, for implementation of the first embodiment, how to design the DMRS of the NR PDSCH needs to be considered, so as to enable multi-stream transmission, improve multiplexing capability, and simultaneously consider low PAPR performance. In addition, for different PDSCH resources, the number of occupied RBs may be different or the starting positions of RBs may be different, and how to perform multiplexing in this case is also a technical problem to be solved.

Embodiment two, sequences of DMRSs for NR PUSCH shown in table 1.

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

wherein r (n) represents a DMRS sequence of PUSCH;

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

Specifically, under the condition of network equipment configuration or pre-configuration,

is a Low PAPR sequence Type2 sequence; and in other cases of the same, the data is,

is a Low PAPR sequence Type1 sequence with cyclic shifts α =0, δ =1;

optionally, the condition configured or preconfigured by the network device may include one or more of the following:

1. the network equipment configures a high-level parameter demodulation reference signal-uplink transmission precoding (dmrs-uplink transformampcoding);

2. the data transmitted on the PUSCH is configured or preconfigured by the network equipment and is modulated by pi/2-BPSK;

3. the network device configuring or pre-configuring transmission on the PUSCH is not based on transmission of message 3 (msg 3);

4. the network device configuration or pre-configuration is not transmission of downlink control information of various 0 (DCI format 0) schedules in the common search space.

In other words, when the conditions of the network device configuration or pre-configuration include one or more of the following,

is a Low paprs sequence Type2 sequence; and in other cases of the same, the data is,

is a Low PAPR sequence Type1 sequence.

u is the sequence group number, formed by

It is determined that,

configured by a higher layer parameter or as a cell ID;

v is the sequence number, v and f _gh Determining whether group hopping (group hopping) is enabled and sequence hopping (sequence hopping) is enabled;

is the length of the reference signal, or the number of the sub-carriers occupied by the PUSCH.

In embodiment two, since the current NR PUSCH supports two waveforms DFT-s-OFDM and CP OFDM, the DFT-s-OFDM waveform has lower PAPR and larger coverage than the CP OFDM waveform. Also, DMRS of NR PUSCH uses a low PAPR sequence for demodulation.

However, NR PUSCH only supports single stream transmission, and user transmission rate and cell capacity are limited. Therefore, how to design DMRS of NR PUSCH needs to be considered, so that multiflow is enabled, multiplexing capability is improved, and low PAPR performance is also considered. In addition, for different PUSCH resources, the number of occupied RBs is different or the starting position of the RB is different, and how to perform multiplexing in this case is also a technical problem to be solved.

Embodiment three, for the sequences of NR PUCCH format0 shown in table 2.

As shown in table 2, the NR PUCCH format0 carries information bits by sequences and distinguishes different users by sequences, thereby supporting multi-user multiplexing. Generally, PUCCH format0 occupies only 1 RB, that is, the sequence length of PUCCH format0 is the number of subcarriers occupied by one RB (i.e., 12). The sequence x (n) of the PUCCH format0 satisfies the following condition:

wherein the content of the first and second substances,

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

wherein, the related parameters are defined as follows:

is the time slot number of the radio frame;

l is an OFDM symbol in PUCCH transmission;

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

l' is the index of the OFDM symbol within the slot, relative to the first OFDM symbol of the PUCCH transmission within the slot;

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

m _cs determining according to the information carried by the PUCCH format 0;

m _int according to the relation of the resource block sequence number in the interlace, or, the value is 0;

function n _cs By means of the definition of the pseudo-random sequence,

the number of sub-carriers occupied by one RB is 1 RB, so the PUCCH format0 only occupies

The sequence length (i.e., 12) of the PUCCH format0 may be represented.

In embodiment three, the sequence of the NR PUCCH format0 uses a Low PAPR sequence Type1 sequence, having a Low PAPR characteristic. However, the NR PUCCH format0 only occupies one RB, and cannot fully utilize the transmission power of the device in an unlicensed frequency band, thereby degrading the coverage performance. When increasing the number of RBs occupied by the NR PUCCH format0, how to design a sequence of the NR PUCCH format0 needs to be considered, so that the multiplexing capability is improved after the number of RBs is increased, and the low PAPR performance is also considered. In addition, for PUCCH format0 carried by different PUCCH resources, the number of occupied RBs is different or the starting position of the RB is different, and how to multiplex in this case is also a technical problem to be solved urgently.

Embodiment four, DMRSs for the sequences of NR PUCCH format1 shown in table 2 and NR PUCCH format1 shown in table 2.

As shown in table 2, NR PUCCH format1 carries information bits by sequences, and different users are distinguished by PUCCH format1 sequences and DMRS sequences, thereby supporting multi-user multiplexing. The R15/R16 PUCCH format1 only occupies 1 RB, that is, the sequence length of the PUCCH format1 is 12. The sequence z of the PUCCH format1 satisfies:

wherein, the first and the second end of the pipe are connected with each other,

is a Low PAPR sequence Type1 sequence and δ =0; the sequence group number u and the sequence number v are determined according to group hopping (group hopping) and sequence hopping (sequence hopping); cyclic shift parameter alpha of Low PAPR sequence Type1 sequence _l From m _cs Determination of m _cs Determining according to the information carried by the PUCCH format0

Wherein the relevant parameters are defined as follows:

is the time slot number of the radio frame;

l is an OFDM symbol in PUCCH transmission;

l =0 first OFDM symbol relative to PUCCH transmission;

l' is the index of the OFDM symbol within the slot, relative to the first OFDM symbol of the PUCCH transmission within the slot;

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

m _cs ＝0；

m _int according to the relation of the resource block sequence number in the interlace, or, the value is 0;

function n _cs Defined by a pseudo-random sequence;

the number of sub-carriers occupied by one RB, since PUCCH format1 only occupies 1 RB, the number of sub-carriers occupied by one RB is small

The sequence length (i.e., 12) of the PUCCH format1 may be represented.

In addition, the DMRS sequence of NR PUCCH format1 is defined as follows:

wherein

May be pre-configured or network device configured;

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

In the fourth embodiment, the sequence of the NR PUCCH format1 and the DMRS of the NR PUCCH format1 are based on the Low PAPR sequence Type1 sequence, and have a Low PAPR characteristic. However, since the NR PUCCH format1 occupies only one RB, the transmission power of the device cannot be fully utilized in an unlicensed frequency band, and thus, there is a problem that coverage performance is degraded. When increasing the number of RBs in the NR PUCCH format1, how to design the sequence of the NR PUCCH format1 and the DMRS sequence of the NR PUCCH format1 needs to be considered, so that the multiplexing capability is improved after increasing the number of RBs, and the low PAPR performance is also considered. In addition, for PUCCH formats 1 carried by different PUCCH resources, the number of occupied RBs is different or the starting position of the RB is different, and how to perform multiplexing in this case is also a technical problem to be solved urgently.

Embodiment five DMRS for NR PUCCH format4 shown in table 2.

As shown in table 2, the NR PUCCH format4 carries information bits by coding, and distinguishes different users by DMRS sequences, thereby performing user multiplexing. Currently, PUCCH format4 only occupies 1 RB, that is, the DMRS sequence length of PUCCH format4 is 12.

DMRS sequence r of PUCCH format4 _l (m) satisfies:

wherein, the definition of the related parameters is as follows:

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

specifically, under the condition of network equipment configuration or pre-configuration,

is Low PAPR seqA uence Type2 sequence; and in other cases of the same, the data is,

is a Low PAPR sequence Type1 sequence, and the cyclic shift α is according to the initial cyclic shift m of PUCCH format4 ₀ Determining, δ =0;

optionally, the condition configured or preconfigured by the network device includes one or more of the following:

1. the network equipment configures a high-level parameter demodulation reference signal-uplink transmission precoding (dmrs-uplink transformforward precoding);

2. the data transmitted on the PUSCH is configured or preconfigured by the network equipment and is modulated by pi/2-BPSK;

in other words, when the conditions under which the network device is configured or preconfigured include one or more of the following,

is a Low PAPR sequence Type2 sequence; and in other cases of the same, the data is,

is a Low PAPR sequence Type1 sequence.

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

the number of sub-carriers occupied by one RB, the PUCCH format4 only occupies 1 RB, then

May represent a sequence length of the PUCCH format4,

in embodiment five, the DMRS of the NR PUCCH format4 uses a Low PAPR sequence Type1 or Low PAPR sequence Type2 sequence, having a Low PAPR characteristic. However, since the NR PUCCH format4 occupies only one RB, the transmission power of the device cannot be fully utilized in the unlicensed frequency band, and there is a problem that the coverage performance is degraded. When increasing the number of RBs in the NR PUCCH format4, how to design a DMRS sequence in the NR PUCCH format4 needs to be considered, so that the multiplexing capability is improved after the number of RBs is increased, and the low PAPR performance is also considered. In addition, for PUCCH formats 4 carried by different PUCCH resources, the number of occupied RBs is different or the starting position of the RB is different, and how to multiplex in this case is also a technical problem to be solved urgently.

In summary, the sequence currently transmitted over the wireless channel is constructed based on a smaller bandwidth resource (e.g., one RB) in the communication system of the low frequency band. In a communication system with a high frequency band, the bandwidth resources (e.g., a plurality of RBs) available between different devices are large, which results in that the sequence constructed based on the small bandwidth resources is no longer applicable. In other words, how to implement the structure of the sequence in a large bandwidth resource is a technical problem to be solved urgently.

In order to solve the above technical problem, the present application provides a communication method and a communication apparatus, which are used to provide a method for constructing a sequence over a large bandwidth resource, and when the number of RBs of a first resource for carrying the sequence is large, reduce implementation complexity and save overhead by means of cyclic extension, and improve communication efficiency. In addition, in some embodiments, multi-stream multiplexing or multi-user multiplexing is realized by using a low PAPR sequence, so that a user rate or a system capacity is improved, and meanwhile, the problem of flexible multiplexing of users when different numbers of RBs and different starting positions of RBs are solved, so that the system capacity is further improved.

Therefore, how to implement the structure of the sequence in a large bandwidth resource is a technical problem to be solved urgently.

Referring to fig. 4, a schematic diagram of a communication method provided in the present application is shown, which includes the following steps.

S101, the sending equipment generates a first sequence.

In this embodiment, the transmitting device generates a first sequence in step S101, where a sequence length of the first sequence is directly related to the number of RB of a resource block of a first resource occupied by a 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 a second sequence, and the first threshold is greater than or equal to 1. The first sequence is used for carrying information bits, DMRS and the like.

Further, generating the first sequence may also be expressed as generating the first sequence, constructing the first sequence, and so forth.

S102, the sending equipment sends a first sequence to the receiving equipment.

In this embodiment, in step S102, the sending device sends the first sequence generated in step S101 to the receiving device, and accordingly, the receiving device receives the first sequence in step S102.

Optionally, the sending device may process the first sequence in step S102 to obtain a processed first sequence, and then send the processed sequence in step S102. The processing procedure may include one or more of scrambling processing, encryption processing, compression processing, and the like, which is not limited herein.

Accordingly, the receiving device receives the processed first sequence in step S102, and performs a corresponding processing procedure on the processed sequence to obtain the first sequence. The processing procedure may include one or more of descrambling, decryption, and decompression, which is not limited herein.

In one possible implementation, in addition to transmitting the first sequence in step S102, the method further includes: transmitting first indication information indicating that transform precoding (transformat precoding) of the first channel is enabled; or, the first indication information is used to indicate that when data is carried on the first channel where the first sequence is located, the data is subjected to transform precoding. Accordingly, the receiving device also receives the first indication information in step S102.

The first indication information may be carried in the same message as the first sequence, and the first indication information may be carried in a different message from the first sequence, which is not limited herein.

Based on the foregoing technical solution, when the communication apparatus for transmitting the first sequence is a transmitting device, the transmitting device may further send first indication information, which is used to indicate that transform precoding of the first channel is enabled, where the transform precoding that enables the first channel indicates that Discrete Fourier Transform (DFT) transform is performed on data carried on the first channel, so as to obtain frequency domain data.

S103, the receiving equipment analyzes the first sequence.

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

In a possible implementation manner, the first sequence is a cyclic extension of the second sequence, and a sequence obtained by the cyclic extension of the first 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, A is smaller than L, mod indicates the remainder operation, and n is the sequence index.

Specifically, when the number of RBs of the first resource used for carrying the first sequence is large, the first sequence may cyclically extend 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 a second resource, and the second resource is used for carrying the second sequence.

Specifically, the length of the second sequence is determined by the number of subcarriers included in the second resource for carrying the second sequence, and specifically, the length of the second sequence is positively correlated to the number of subcarriers. That is, the larger the number of subcarriers included in the second resource is, the larger the length value of the second sequence is; conversely, the smaller the number of subcarriers included in the second resource is, the smaller the length value of the second sequence is.

In one possible implementation, 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,

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 of the first resource for carrying the first sequence is not greater than the first threshold, the first sequence constructed based on the smaller bandwidth resource is transmitted on the first channel. The length of the first sequence is determined by the number of subcarriers included in a first resource for carrying the first sequence, and specifically, the length of the first sequence is positively correlated to the number of subcarriers. That is, the larger the number of subcarriers included in the first resource is, the larger the length value of the first sequence is; conversely, the smaller the number of subcarriers included in the first resource is, the smaller the length value of the first sequence is.

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 The number of RBs of the first resource is,

the number of subcarriers occupied by one RB.

In a possible implementation manner of the first aspect or the second aspect, the second sequence is a Low peak to average power ratio type one (Low PAPR sequence type 1), and the Low PAPR sequence type1 satisfies:

wherein r is the second sequence,

alpha is a cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.

Specifically, the second sequence may be a peak to average power ratio (PAPR) sequence, and specifically may be a Low PAPR sequence type1 sequence. In other words, when the number of RBs of the first resource for carrying the sequence is large, the second sequence 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 the coverage requirement.

Wherein, for the cyclic shift parameter α in the Low PAPR sequence type1, the α satisfies:

wherein the content of the first and second substances,

the number of sub-carriers occupied by one RB,

is the index value of the second resource.

Specifically, as can be seen from the above description, the parameter α in the Low PAPR sequence type1 sequence is associated with an index value of the second resource for carrying the second sequence, and specifically, the index value is a frequency domain index value. Therefore, the parameter α in different Low PAPR sequence type1 sequences can be determined based on different frequency domain index values of the second resource, different second sequences can be constructed based on different frequency domain index values of the second resource, and indication of multi-stream multiplexing and/or multi-user multiplexing can be realized through multiple combination modes of different second sequences.

Further, for the cyclic shift parameter α in the Low PAPR sequence type1, the cyclic shift parameter includes a randomly generated parameter; or, the cyclic shift parameter is associated with an index value of the second resource.

In particular, the cyclic shift parameter may be determined based on a randomly generated parameter or based on an index value of the second resource to enable determination of the plurality of cyclic shift parameters. Different second sequences may be constructed based on different cyclic shift parameters, and the indication of multi-stream multiplexing and/or multi-user multiplexing may be achieved in a variety of combinations of different second sequences.

Alternatively, the randomly generated parameters may include Quadrature Phase Shift Keying (QPSK) symbols, binary Phase Shift Keying (BPSK) symbols, or other parameters.

In addition, different values of the cyclic shift parameter are used for indicating that the second sequence is a sequence corresponding to the same data stream; and/or different values of the cyclic shift parameter are used for indicating that the second sequence is a sequence corresponding to the same communication device.

Specifically, when the second sequence is a Low PAPR sequence type1 sequence, since cyclic shift parameters in the Low PAPR sequence type1 sequence may have a plurality of different values, different cyclic shift parameters construct different second sequences, different first sequences may be obtained in a plurality of combination manners of the different second sequences, and multi-stream multiplexing and/or multi-user multiplexing may be implemented by the different first sequences.

The following description will be given taking as an example that the sequence length L of the first sequence is an integer multiple (for example, multiple q, and q is an integer greater than 1) of the sequence length a of the second sequence.

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

wherein S (n) represents a second sequence, e is a natural constant, superscript j is an imaginary unit, superscript alpha represents a cyclic shift parameter, and superscript n represents a sequence index;

is a base sequence of the Low PAPR sequence type1 sequence or

Is a base sequence of the Low PAPR sequence type2 sequence.

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

wherein, S (n) represents a second sequence, e is a natural constant, superscript j is an imaginary unit, superscript beta represents a cyclic shift parameter, and superscript n is a sequence index;

is a base sequence of the Low PAPR sequence type1 sequence or

Is a base sequence of the Low PAPR sequence type2 sequence.

In this implementation example, the manner that α is not equal to β may be set to obtain different first sequences, so that the first sequences corresponding to different users (or different data streams) are different, thereby implementing multi-user multiplexing (or multi-stream multiplexing).

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

and the second of the q second sequences satisfies:

…

and the q second sequences of the q second sequences satisfy:

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

is a base sequence of the Low PAPR sequence type1 sequence or

A base sequence of the Low PAPR sequence type2 sequence;

further, α ₀ 、α ₁ 、…α _q Satisfies the following conditions:

wherein the content of the first and second substances,

the number of sub-carriers occupied by one RB,

for the resource carrying q second sequences (e.g. the resource carrying the first one of the q second sequences has an index value of 0, the resource carrying the first one of the q second sequences has an index value of 1, \ 8230;, the bearer carriesThe index value of the resource of the first one of the q second sequences is q-1), α _int A pre-configured value or a value configured for the network device.

In this implementation example, different α can be configured for different users (or different data flows) in a pre-configured manner or a network device configuration manner _int 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 one possible implementation manner, the second sequence is a Low peak-to-average power ratio type two Low PAPR sequence type2, and the Low PAPR sequence type2 satisfies:

wherein r is the second sequence,

is a base sequence of a Low PAPR sequence type2 sequence.

Specifically, the second sequence may be a peak to average power ratio (PAPR) sequence, and specifically may be a Low PAPR sequence type2 sequence. In other words, when the number of RBs of the first resource for carrying the sequence is large, the second sequence 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 the coverage requirement.

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

Specifically, the first threshold may be a value greater than 1, and 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 cyclically extending the second sequence.

In one possible implementation, 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 a positive integer multiple of 5, or the number of RBs of the first resource is 1.

In a possible implementation manner, the first sequence is carried in the first channel which is modulated by a single carrier waveform.

Specifically, on the first channel, the first sequence may be specifically carried on the first channel that is subjected to the modulation scheme of the single carrier waveform, and compared with the problem that the modulation scheme of the multi-carrier waveform has a relatively large PAPR, the modulation scheme using the single carrier waveform may reduce the PAPR and provide a higher output power and a higher power amplifier efficiency, thereby achieving the purposes of improving coverage and reducing energy consumption.

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

Optionally, the modulation method of the single-carrier waveform may be a single-carrier waveform such as single carrier-QAM (quadrature amplitude modulation, SC-QAM).

In one possible implementation form of the method,

the first channel is a Physical Uplink Control Channel (PUCCH), where the first sequence is a sequence of format0 (PUCCH format 0) carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format1 (PUCCH format 1) carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a demodulation reference signal (DMRS) of a format1 (PUCCH format 1) carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a DMRS of a format4 (PUCCH format 4) carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Downlink Shared Channel (PDSCH), wherein the first sequence is a sequence of a DMRS carried in the PDSCH; or the like, or, alternatively,

the first channel is a Physical Uplink Shared Channel (PUSCH), and the first sequence is a sequence of a 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, and the larger the number of RBs of the first resource occupied by the first channel is, the larger the sequence length value of the first sequence is; conversely, the smaller the number of RBs of the first resource occupied by the first channel is, the smaller the sequence length value of the first sequence is. In other words, the sequence length of the first sequence and the number of RBs of the first resource occupied by the first channel may be in a direct proportional relationship. While in different implementations of the first channel the coefficients of the direct proportional relationship may be different. For example, when the sequence carried on the first channel is in a comb structure, the coefficient of the direct proportional relationship may be smaller than 1, for example, 0.1, 0.3, 0.5 or other values, which is not limited herein. As another example, when the sequence carried on the first channel is not comb-shaped, the coefficient of the direct proportional relationship may be equal to 1.

Based on the technical solution shown in fig. 4, in a first sequence carried on a first channel and transmitted by a transmitting device (or received by a receiving device), a sequence length of the first sequence is positively correlated with a number of resource blocks RB of a 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 cyclically extending a second sequence. Compared with the sequence constructed by the smaller bandwidth resource (for example, one RB) in the communication system based on the low frequency band, which is currently transmitted on the wireless channel, the first sequence is transmitted on the first channel based on the first resource, the number of RBs of the first resource is greater than the first threshold, and the first threshold is greater than or equal to 1, that is, the first sequence constructed by the larger bandwidth resource is transmitted on the first channel, and the first sequence is a cyclically extended sequence of the second sequence. Therefore, a construction mode of the sequence on the large bandwidth resource is provided, and when the number of RBs of the first resource for bearing the sequence is large, the implementation complexity is reduced and the overhead is saved in a cyclic extension mode, and the communication efficiency is improved.

As can be seen from the implementation shown in fig. 4, there are many different implementations of the first channel and the first sequence. The implementation processes shown in the first to fifth embodiments are modified with reference to the communication method shown in fig. 4.

In the following embodiments, the first threshold value in the embodiment shown in fig. 4 is denoted as a threshold value K, the first sequence is denoted as r (n), and the second sequence is denoted as a threshold value K

Sixth embodiment, an improvement of the sequence of DMRS for PDSCH, i.e., an improvement of first embodiment.

Wherein, the sixth embodiment designs a DMRS sequence with low PAPR for PDSCH multi-stream multiplexing or multi-user multiplexing. The DMRS sequence of the PDSCH is specifically provided, and is a specific implementation of the first sequence in the embodiment shown in fig. 4.

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

n＝0,1,…,L-1；

the definition of the relevant parameters includes:

r (n) is a DMRS sequence of the PDSCH;

the system can be formed by a Low PAPR sequence type1 or a Low PAPR sequence type 2;

n is a sequence index;

l is the sequence length;

N _RB the number of RBs used for PDSCH;

in a system where the number of subcarriers contained in one RB is NR

Corresponding L denotes the use of N _RB Length of DMRS sequence for PDSCH transmission of one RB, or it can be understood that L denotes using N _RB Total number of subcarriers for PDSCH transmission of the RBs;

δ＝1；

the values of the sequence group number u and the sequence number v may be determined according to the configuration of group hopping (group hopping) and/or sequence hopping (sequence hopping).

As will be pointed out below

Various implementations of (a) are described.

The first condition is as follows:

is a Low PAPR sequence type1 sequence, and the cyclic shift parameter α is used to distinguish different sequences. Thus, different values of the cyclic shift parameter a may be used to distinguish different data streams, or to distinguish different UEs.

1. Number of RBs N used when PDSCH _RB Less than or equal to the threshold K, or equivalently, when the DMRS sequence length L of the PDSCH is less than or equal to the threshold K.N _RB When the utility model is used, the water is discharged,

the sequence consists of a Low PAPR sequence type1 sequence with the sequence length L.

Satisfies the following conditions:

2. number of RBs N used when PDSCH _RB >Threshold K, or equivalently, when DMRS sequence length L of PDSCH>Threshold K.N _RB When the utility model is used, the water is discharged,

one period corresponding to the length of W RBs is as long as

A sequence with the length of L is obtained by cyclic extension based on the Low PAPR sequence type1 sequence,

satisfies the following conditions:

in the implementation, a subscript u represents a number of a sequence group, a subscript v represents a number in the sequence group, a superscript α represents a cyclic shift parameter, a superscript δ is a preconfigured value or a configured value of network equipment, a superscript j is an imaginary unit, and a superscript n is a sequence index;

wherein e is a natural constant, and the natural constant is,

represents a Low PAPR sequence type1 sequence having a sequence length L and

has a sequence length of L;

base sequence representing Low PAPR sequence type1 sequence. Further, W<K, i.e. W, is an integer greater than 0 and less than K.

In addition, the Low PAPR sequence type1 sequence in the first case may refer to the related implementation in the aforementioned "first and Low PAPR sequence type1 sequences", which is not described herein again.

Optionally, W =1, that is, a generated Low PAPR sequence type1 based on one RB length, obtains a sequence with a length L through cyclic extension.

Optionally, W =2, that is, a generated LowPAPR sequence type1 based on one RBG length, which is composed of 2 RBs, obtains a sequence with a length of L through cyclic extension.

Optionally, K =9 or 10.

In the case of the second situation, the user can select the first situation,

is a Low PAPR sequence type2 sequence.

1. Number of RBs N used when PDSCH _RB Less than or equal to the threshold K, or equivalently, when the DMRS sequence length L of the PDSCH is less than or equal to the threshold K.N _RB When the temperature of the water is higher than the set temperature,

the sequence length is L, and the sequence length is L.

Satisfies the following conditions:

2. number of RBs N used when PDSCH _RB >Threshold K, or equivalently, when DMRS sequence length L of PDSCH>Threshold K.N _RB When the temperature of the water is higher than the set temperature,

one cycle length corresponding to W RB lengths is

And performing cyclic extension on the Low PAPR sequence type2 sequence to obtain a sequence with the length of L.

Satisfies the following conditions:

in the above implementation, the subscript u represents the number of the sequence group, the subscript v represents the number within the sequence group, the superscript α represents the cyclic shift parameter, and the superscript δ is a preconfigured value or a configured value of the network device.

Wherein the content of the first and second substances,

represents a Low PAPR sequence type2 sequence and

the length of the sequence of (a) is L,

a base sequence representing a Low PAPR sequence type2 sequence, e being a natural constant,

the number of subcarriers occupied by one RB. Further, W<K, i.e., W, is an integer greater than 0 and less than K.

In addition, the Low PAPR sequence type2 column in the second case may refer to the related implementation in the "second and Low PAPR sequence type sequences", which is not described herein again.

Optionally, W =1, that is, a generated Low PAPR sequence type2 based on one RB length, obtains a sequence with a length L through cyclic extension.

Optionally, W =2, that is, lowPAPR sequence type2 based on generation of one RBG length, obtains a sequence with length L through cyclic extension, where one RBG is composed of 2 RBs.

Optionally, K =9 or 10.

Further, optional constraints on DMRS sequence construction for PDSCH include one or more of:

alternatively to this, the first and second parts may,

wherein delta ₂ ,δ ₃ ,δ ₅ Is a non-negative integer.

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

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

Alternatively, when transform Precoding (PDSCH) 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, PDSCH transmission uses a single carrier waveform. For example, the PDSCH transmission uses DFT-s-OFDM.

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

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

When the PAPR sequence type1 is Low, the following requirements are met:

the index of 1 st W RB is 1, \8230;, the index of 1 st W RB is 1

An index of W RBs of

W denotes indexing every W RBs.

One possible approach 1 is to index every W RBs with W RBs as granularity. The values of the cyclic shift parameter α are the same for each W RBs, and the values of the cyclic shift parameter α are different for different W RBs, i.e.

When the W =1, the voltage is set to zero,

may be an index of each RB of the PDSCH. When W =2, one RBG is composed of 2 RBs,

may be an index of each RBG of PDSCH.

One possible processing mode 2 is to index every W RBs with W RBs as granularity. Shift the cycle by e ^jαn The QPSK symbols are replaced with randomly generated QPSK symbols. When the W =1, the voltage is set to zero,

may be an index of each RB of the PDSCH. When W =2, one RBG is composed of 2 RBs,

may be an index of each RBG of the PDSCH.

Based on the technical scheme of the sixth embodiment, multi-stream multiplexing of the downlink PDSCH can be performed by using a single-carrier waveform, and meanwhile, the DMRS sequence of the PDSCH has low PAPR performance, so that the coverage requirement can be met. Good multi-stream multiplexing can be performed even when the number of RBs occupied by different PDSCHs is different or the RB starting positions are different. And, while guaranteeing the downlink PDSCH coverage, has improved the data rate or system capacity.

Embodiment seven, improvement of the sequence of the DMRS for PUSCH, i.e., improvement of embodiment two.

Wherein, the seventh embodiment designs a DMRS sequence with low PAPR for PUSCH multi-stream multiplexing or multi-user multiplexing. The DMRS sequence of the PDSCH is specifically provided, and serves as a specific implementation manner of the first sequence in the embodiment shown in fig. 4.

Wherein, the DMRS sequence r (n) of the PUSCH satisfies the following conditions:

n＝0,1,…,L-1；

the definition of the relevant parameters includes:

r (n) is a DMRS sequence of PUSCH;

the system can be formed by a Low PAPR sequence type1 or a Low PAPR sequence type 2;

n is a sequence index;

l is the sequence length;

N _RB the number of RBs used for PUSCH;

number of subcarriers contained for one RB, in NR systems

Corresponding L denotes the use of N _RB Length of DMRS sequence for PUSCH transmission of RB, or it can be understood that L denotes using N _RB Total number of subcarriers for PDSCH transmission of a number of RBs;

δ＝1；

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

As will be pointed out below

Various implementations of (a) are described.

Is Low PAPR sequence type1, and the cyclic shift parameter α is used to distinguish different sequences. Thus, different values of the cyclic shift parameter α may be used to distinguish between different data streams, or alternatively, between different UEs.

1. Number of RBs N used when PUSCH _RB Less than or equal to the threshold K, or equivalently, when the DMRS sequence length L of the PUSCH is less than or equal to the threshold K.N _RB /2 ^δ When the utility model is used, the water is discharged,

the sequence consists of a Low PAPR sequence type1 sequence with the sequence length L.

Satisfies the following conditions:

2. number of RBs N used when PUSCH _RB >Threshold K, or equivalently, when DMRS sequence length L of PUSCH>Threshold value K.N _RB /2 ^δ When the temperature of the water is higher than the set temperature,

one period corresponding to the length of W RBs is as long as

And performing cyclic extension on the Low PAPR sequence type1 sequence to obtain a sequence with the length of L.

Satisfies the following conditions:

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

wherein, e is a natural constant, and the natural constant is,

represents a Low PAPR sequence type1 sequence having a sequence length of L and

has a sequence length of L;

base sequence representing Low PAPR sequence type1 sequence. Further, W<K, i.e., W, is an integer greater than 0 and less than K.

Optionally, W =1, that is, a generated Low PAPR sequence type1 based on one RB length, obtains a sequence of length L through cyclic extension.

Optionally, W =2, that is, a generated LowPAPR sequence type1 based on one RBG length, which is composed of 2 RBs, obtains a sequence with a length of L through cyclic extension.

Optionally, K =9 or 10.

In the case of the second situation, the user can select the first situation,

is Low PAPR sequence type 2.

1. Number of RBs N used when PUSCH is used _RB Less than or equal to the threshold K, or equivalently, when the DMRS sequence length L of the PUSCH is less than or equal to the threshold K.N _RB /2 ^δ When the temperature of the water is higher than the set temperature,

the sequence length L is the sequence length of the Low PAPR sequence type2 sequence.

Satisfies the following conditions:

2. number of RBs N used when PUSCH _RB >Threshold K, or equivalently, when DMRS sequence length L of PUSCH>Threshold value K.N _RB /2 ^δ When the temperature of the water is higher than the set temperature,

one period corresponding to the length of W RBs is as long as

And performing cyclic extension on the Low PAPR sequence type2 sequence to obtain a sequence with the length of L.

Satisfies the following conditions:

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

Wherein the content of the first and second substances,

represents a Low PAPR sequence type2 sequence and

has a sequence length of L and a sequence length of L,

a base sequence representing a Low PAPR sequence type2 sequence, e being a natural constant,

is the number of subcarriers occupied by one RB. Further, W<K, i.e., W, is an integer greater than 0 and less than K.

Optionally, W =1, that is, a generated Low PAPR sequence type2 based on one RB length, obtains a sequence of length L through cyclic extension.

Optionally, W =2, that is, lowPAPR sequence type2 based on generation of one RBG length, obtains a sequence with length L through cyclic extension, where one RBG is composed of 2 RBs.

Optionally, K =9 or 10.

Further, optional constraints on DMRS sequence construction for PUSCH include one or more of:

alternatively to this, the first and second parts may,

wherein delta ₂ ,δ ₃ ,δ ₅ Is a non-negative integer.

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

When the PAPR sequence type1 is Low, the following requirements are met:

the index of 1 st W RB is 1, \8230;, the index of 1 st W RB is 1

An index of W RBs of

W denotes indexing every W RBs.

One possible approach 1 is to index every W RBs with W RBs as granularity. The values of the cyclic shift parameter α are the same for each W RBs, and the values of the cyclic shift parameter α are different for different W RBs, i.e.

When the W =1, the voltage is set to zero,

may be an index of PUSCH per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUSCH per RBG.

One possible processing mode 2 is to index every W RBs with W RBs as granularity. Shift the cycle by e ^jαn The QPSK symbols are replaced with randomly generated QPSK symbols. When the W =1, the voltage is set to zero,

may be an index of PUSCH per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUSCH per RBG.

Based on the seventh technical scheme of the embodiment, multi-stream multiplexing is performed on the downlink PUSCH by using a single carrier waveform, and meanwhile, the DMRS sequence of the PUSCH has a low PAPR performance, and thus, the coverage requirement can be met. And under the condition that different PUSCHs occupy different RB numbers or different RB initial positions, good multi-stream multiplexing can be carried out. In addition, the data rate or the system capacity is improved while the downlink PUSCH coverage is ensured.

Eighth embodiment, is an improvement on the sequence of PUCCH format0, that is, an improvement on the third embodiment.

Wherein, the seventh embodiment designs a DMRS sequence with low PAPR for PUSCH multi-stream multiplexing or multiuser multiplexing. Specifically, a sequence of the PUCCH format0 is provided, and the sequence of the PUCCH format0 is used as a specific implementation manner of the first sequence in the embodiment shown in fig. 4.

Wherein, the sequence r (n) of the PUCCH format0 satisfies the following conditions:

n＝0,1,…,L-1；

the definition of the relevant parameters includes:

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

may be a Low PAPR sequence type1 configuration;

n is a sequence index;

l is the sequence length;

N _RB the number of RBs used for PDSCH;

number of subcarriers contained for one RB, in NR systems

Corresponding L denotes the use of N _RB Length of DMRS sequence for PDSCH transmission of one RB, or it can be understood that L denotes using N _RB Total number of subcarriers for PDSCH transmission of a number of RBs;

δ＝1；

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

In particular, the method comprises the following steps of,

may be a Low PAPR sequence type1, and the cyclic shift parameter α is used to distinguish different sequences. Thus, different values of the cyclic shift parameter a may be used to distinguish between different UEs.

1. Number of RBs N used when PUCCH format0 _RB Less than or equal to the threshold value K, or equivalently, when the PUCCH format0 sequence length L is less than or equal to the threshold value K.N _RB When the utility model is used, the water is discharged,

the sequence consists of a Low PAPR sequence type1 sequence with the sequence length L.

Satisfies the following conditions:

2. number N of RBs used when PUCCH format0 is used _RB >Threshold K, or equivalently, when PUCCH format0 sequence length L>Threshold value K.N _RB When the temperature of the water is higher than the set temperature,

one period corresponding to the length of W RBs is as long as

And performing cyclic extension on the Low PAPR sequence type1 sequence to obtain a sequence with the length of L.

Satisfies the following conditions:

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

wherein e is a natural constant, and the natural constant is,

base sequence representing Low PAPR sequence type1 sequence. Further, W<K, i.e. W, is an integer greater than 0 and less than K.

In addition, the Low PAPR sequence type1 sequence in the first case may refer to the related implementation in the aforementioned "first and Low PAPR sequence type1 sequences", which is not described herein again.

Optionally, W =1, that is, a generated Low PAPR sequence type1 based on one RB length, obtains a sequence of length L through cyclic extension.

Optionally, W =2, that is, a generated LowPAPR sequence type1 based on one RBG length, which is composed of 2 RBs, obtains a sequence with a length of L through cyclic extension.

Optionally, K =9 or 10.

Alternatively to this, the first and second parts may,

wherein delta ₂ ,δ ₃ ,δ ₅ Is a non-negative integer.

In a possible implementation manner, the PUCCH format0 sequence may be further optimized to reduce a PAPR of the PUCCH format0 sequence.

Specifically, when the PUCCH format0 sequence satisfies the condition of using the short sequence cyclic extension, and when

Is Low PAPR sequence type1, satisfy:

the index of the 1 st W RB is 1, \8230;, the 1 st

An index of W RBs of

W denotes indexing every W RBs.

One possible approach 1 is to index every W RBs with W RBs as granularity. The value of the cyclic shift parameter α is the same for every W RBs, and the value of the cyclic shift parameter α is different for different W RBs, i.e.

When the W =1, the voltage is set to zero,

may be an index of PUCCH format0 per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUCCH format0 per RBG.

One possible approach 2 is to index every W RBs with W RBs as granularity. Shift the cycle by e ^jαn Replaced with randomly generated QPSK symbols. When the W =1, the voltage is set to zero,

may be an index of PUCCH format0 per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUCCH format0 per RBG.

Based on the technical solution of the eighth embodiment, multi-stream multiplexing of the PUCCH format0 when the number of used RBs is greater than 1 is enabled, and meanwhile, the sequence of the PUCCH format0 has low PAPR performance, which can meet the coverage requirement. When different PUCCH formats 0 occupy different numbers of RBs or different RB starting positions, good multiflow multiplexing can be performed. In addition, the flexible multiplexing capability is improved and the system capacity is improved while the PUCCH format0 coverage is ensured.

Ninth, an improvement on the sequence of the PUCCH format1 and the DMRS of the PUCCH format1 shown in table 2, that is, an improvement on fourth embodiment.

The ninth embodiment designs a DMRS sequence with a low PAPR for multi-user multiplexing of PUCCH format 1. Specifically, a PUCCH format1 sequence and a DMRS sequence of PUCCH format1 are provided, and the PUCCH format1 sequence and the DMRS sequence of PUCCH format1 are used as a specific implementation manner of the first sequence in the embodiment shown in fig. 4.

The PUCCH format1 sequence r (n) meets the following requirements:

n＝0,1,…,L-1；

the definition of the relevant parameters includes:

r (n) is a PUCCH format1 sequence;

d (0) is a complex modulation symbol;

ω (m) is pre-configured by a protocol or network device;

the system can be formed by a Low PAPR sequence type1 or a Low PAPR sequence type 2;

n is a sequence index;

l is the sequence length;

N _RB the number of RBs used for PUSCH;

in a system where the number of subcarriers contained in one RB is NR

Corresponding L denotes the use of N _RB Length of DMRS sequence for PUSCH transmission of RB, or it may be understood that L denotes using N _RB Total number of subcarriers for PDSCH transmission of a number of RBs;

δ＝1；

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

The DMRS sequence r (n) of the PUCCH format1 satisfies the following condition:

n＝0,1,…,L-1；

m＝0,1,…,N ^{PUCCH 1} -1；

the definition of the relevant parameters includes:

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

ω (m) is an orthogonal sequence;

the system can be formed by a Low PAPR sequence type1 or a Low PAPR sequence type 2;

n is a sequence index;

l is the sequence length;

N _RB the number of RBs used for PUSCH;

in a system where the number of subcarriers contained in one RB is NR

Corresponding L denotes the use of N _RB Length of DMRS sequence for PUSCH transmission of RB, or it can be understood that L denotes using N _RB Total number of subcarriers for PDSCH transmission of the RBs;

δ＝1；

the values of the sequence group number u and the sequence number v can be determined according to the configuration of group hopping (group hopping) and/or sequence hopping (sequence hopping);

m is the number of symbols occupied by the PUCCH format 1;

N ^{PUCCH 1} a value configured for a pre-configured value or a network device; optionally, N ^{PUCCH 1} Values of 0, 2, 4, 6, 8, 10 or 12.

In particular, the method comprises the following steps of,

may be a Low PAPR sequence type1 configuration, and the cyclic shift parameter α is used to distinguish different sequences. Thus, different values of the cyclic shift parameter a may be used to distinguish between different UEs.

1. Number of RBs N used when PUCCH format1 _RB Less than or equal to the threshold value K, or equivalently, when the length L of the PUCCH format1 sequence is less than or equal to the threshold value K.N _RB When the temperature of the water is higher than the set temperature,

the sequence consists of a Low PAPR sequence type1 sequence with the sequence length L.

Satisfies the following conditions:

2. when PUCCH format1 is usedRB number N _RB >Threshold K, or equivalently, when PUCCH format1 sequence length L>Threshold value K.N _RB When the utility model is used, the water is discharged,

one period corresponding to the length of W RBs is as long as

And performing cyclic extension on the Low PAPR sequence type1 sequence to obtain a sequence with the length of L.

Satisfies the following conditions:

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

wherein e is a natural constant, and the natural constant is,

represents a Low PAPR sequence type1 sequence having a sequence length of L and

has a sequence length of L;

base sequence representing Low PAPR sequence type1 sequence. Further, W<K, i.e. W, is an integer greater than 0 and less than K.

In addition, the aforementioned Low PAPR sequence type1 sequence may refer to the related implementation in the aforementioned "first and Low PAPR sequence type1 sequences", which is not described herein again.

Optionally, W =1, that is, a generated Low PAPR sequence type1 based on one RB length, obtains a sequence of length L through cyclic extension.

Optionally, W =2, that is, a generated LowPAPR sequence type1 based on one RBG length, which is composed of 2 RBs, obtains a sequence with a length of L through cyclic extension.

Optionally, K =9 or 10.

Alternatively to this, the first and second parts may,

wherein delta ₂ ,δ ₃ ,δ ₅ Is a non-negative integer.

In a possible implementation manner, the PUCCH format1 sequence and the DMRS sequence of the PUCCH format1 may be further optimized to reduce PAPR of the PUCCH format1 sequence and the DMRS sequence of the PUCCH format 1.

Specifically, when the PUCCH format1 sequence or the DMRS sequence of the PUCCH format1 satisfies a condition of using short sequence cyclic extension, and when

When the PAPR sequence type1 is Low, the following requirements are met:

the index of 1 st W RB is 1, \8230;, the index of 1 st W RB is 1

An index of W RBs of

W denotes indexing every W RBs.

One possible approach 1 is to index every W RBs with W RBs as granularity. The values of the cyclic shift parameter α are the same for each W RBs, and the values of the cyclic shift parameter α are different for different W RBs, i.e.

When the W =1, the voltage is set to zero,

may be an index of PUCCH format1 or DMRS sequence of PUCCH format1 per RB. When W =2, one RBG is composed of 2 RBs,

the index may be PUCCH format1 or the index of the DMRS sequence of PUCCH format1 per RBG.

One possible processing mode 2 is to index every W RBs with W RBs as granularity. Shift the cycle by e ^jαn The QPSK symbols are replaced with randomly generated QPSK symbols. When the W =1, the voltage is set to zero,

may be an index of PUCCH format1 or DMRS sequence of PUCCH format1 per RB. When W =2, one RBG is composed of 2 RBs,

the index may be PUCCH format1 or the index of the DMRS sequence of PUCCH format1 per RBG.

Based on the technical scheme shown in the ninth embodiment, multi-user multiplexing of the PUCCH format1 when the number of RBs used is greater than 1 is enabled, and meanwhile, the sequence of the PUCCH format1 has low PAPR performance and can meet the coverage requirement. When different PUCCH formats 1 occupy different numbers of RBs or different RB starting positions, good multiflow multiplexing can be performed. In addition, the flexible multiplexing capability is improved and the system capacity is improved while the PUCCH format1 coverage is ensured.

Embodiment ten, improvement on the DMRS sequence of the PUCCH format4, that is, improvement on embodiment five.

The tenth embodiment designs a DMRS sequence with a low PAPR for multi-user multiplexing of PUCCH format 4. Specifically, a DMRS sequence of PUCCH format4 is provided, and the DMRS sequence of PUCCH format4 is a specific implementation manner of the first sequence in the embodiment shown in fig. 4.

The DMRS sequence r (n) of PUCCH format4 satisfies:

n＝0,1,…,L-1；

the definition of the relevant parameters includes:

r (n) is a DMRS sequence of PUSCH;

the system can be formed by a Low PAPR sequence type1 or a Low PAPR sequence type 2;

n is a sequence index;

l is the sequence length;

N _RB the number of RBs used for PUSCH;

number of subcarriers contained for one RB, in NR systems

Corresponding L denotes the use of N _RB Length of DMRS sequence for PUSCH transmission of RB, or it may be understood that L denotes using N _RB Total number of subcarriers for PDSCH transmission of a number of RBs;

δ＝1；

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

As will be pointed out below

Various implementations of (a) are described.

In the case of the first situation, the first,

is Low PAPR sequence type1, and the cyclic shift parameter α is used to distinguish different sequences. Thus, different values of the cyclic shift parameter a may be used to distinguish different data streams, or to distinguish different UEs.

1. Number of RBs N used when PUCCH format4 is used _RB Is less than or equal to the threshold K, or equivalently, when the DMRS sequence length L of the PUCCH format4 is less than or equal to the threshold K.N _RB When the utility model is used, the water is discharged,

the sequence consists of a Low PAPR sequence type1 sequence with the sequence length L.

Satisfies the following conditions:

2. number N of RBs used when PUCCH format4 is used _RB >Threshold K, or equivalently, when DMRS sequence length L of PUCCH format4>Threshold value K.N _RB When the temperature of the water is higher than the set temperature,

one period corresponding to the length of W RBs is as long as

And performing cyclic extension on the Low PAPR sequence type1 sequence to obtain a sequence with the length of L.

Satisfies the following conditions:

in the implementation, a subscript u represents a number of a sequence group, a subscript v represents a number in the sequence group, a superscript α represents a cyclic shift parameter, a superscript δ is a preconfigured value or a configured value of network equipment, a superscript j is an imaginary unit, and a superscript n is a sequence index;

wherein, e is a natural constant, and the natural constant is,

represents a Low PAPR sequence type1 sequence having a sequence length of L and

has a sequence length of L;

base sequence representing Low PAPR sequence type1 sequence. Further, W<K, i.e. W, is an integer greater than 0 and less than K.

Optionally, W =1, that is, a generated Low PAPR sequence type1 based on one RB length, obtains a sequence of length L through cyclic extension.

Optionally, W =2, that is, lowPAPR sequence type1 based on generation of one RBG length, obtains a sequence with length L through cyclic extension, where one RBG is composed of 2 RBs.

Optionally, K =9 or 10.

In the case of the second situation, the first situation,

is Low PAPR sequence type 2.

1. Number N of RBs used when PUCCH format4 is used _RB Is less than or equal to the threshold K, or equivalently, when the DMRS sequence length L of the PUCCH format4 is less than or equal to the threshold K.N _RB When the temperature of the water is higher than the set temperature,

is composed of a Low PAPR sequence type2 sequence with the sequence length of L

2. Number N of RBs used when PUCCH format4 is used _RB >Threshold K, or equivalently, when DMRS sequence length L of PUCCH format4>Threshold K.N _RB When the utility model is used, the water is discharged,

one cycle length corresponding to W RB lengths is

The length L sequence is obtained by performing cyclic extension on the basis of the Low PAPR sequence type2 sequence, and the mathematical expression is as follows:

in the above implementation, the subscript u represents the number of the sequence group, the subscript v represents the number within the sequence group, the superscript α represents the cyclic shift parameter, and the superscript δ is a preconfigured value or a configured value of the network device.

Wherein the content of the first and second substances,

represents a Low PAPR sequence type2 sequence and

the length of the sequence of (a) is L,

a base sequence representing a Low PAPR sequence type2 sequence, e being a natural constant,

is the number of subcarriers occupied by one RB. Further, i.e., W is an integer greater than 0 and less than K.

Optionally, W =1, that is, a generated Low PAPR sequence type2 based on one RB length, obtains a sequence with a length L through cyclic extension.

Optionally, W =2, that is, lowPAPR sequence type2 based on generation of one RBG length, obtains a sequence with length L through cyclic extension, where one RBG is composed of 2 RBs.

Optionally, K =9 or 10.

Alternatively to this, the first and second parts may,

wherein delta ₂ ,δ ₃ ,δ ₅ Is a non-negative integer.

Optionally, when the PUCCH format4 uses an uplink single-carrier waveform, the DMRS sequence of the PUCCH format4 is obtained by the foregoing method.

Optionally, when the uplink single-carrier waveform used by the PUCCH format4 is DFT-s-OFDM, the DMRS sequence r (n) of the PUCCH format4 is obtained by the above method.

Alternatively, when transform precoding (transform precoding) of the PUCCH format4 is enabled, that is, when the PUCCH format4 uses transform precoding, the DMRS sequence r (n) of the PUCCH format4 is obtained by the above method.

In a possible implementation manner, the DMRS sequence of the PUCCH format4 may be further optimized to reduce a PAPR of the DMRS sequence of the PUCCH format 4.

Specifically, when the DMRS sequence of the PUCCH format4 satisfies the condition of using the short sequence cyclic extension, and when

When the PAPR is Low PAPR sequence type1, the requirements are as follows:

the index of the 1 st W RB is 1, \8230;, the 1 st

Indexes of W RBs of

W denotes indexing every W RBs.

One possible approach 1 is to index every W RBs with W RBs as granularity. The values of the cyclic shift parameter α are the same for each W RBs, and the values of the cyclic shift parameter α are different for different W RBs, i.e.

When the W =1, the voltage is set to zero,

may be an index of PUCCH format4 per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUCCH format4 per RBG.

One possible approach 2 is to index every W RBs with W RBs as granularity. The values of the cyclic shift parameter α of each W RBs are the same, and the values of the cyclic shift parameter α of different W RBs are different, that is, the value of α is a QPSK symbol generated randomly. When the W =1, the voltage is set to zero,

may be an index of PUCCH format4 per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUCCH format4 per RBG.

In a possible implementation manner, the payload of the PUCCH format4 (where the payload of the PUCCH format4 is denoted as control information) may be further optimized to reduce the PAPR of the control information.

Specifically, when the DMRS sequence of the PUCCH format4 satisfies the condition of using short sequence cyclic spreading, the control information performs DFT precoding with W RBs as a granularity, thereby forming a plurality of DFT processing sub-elements. The index of 1 st W RB is 1, \8230;, the index of 1 st W RB is 1

An index of W RBs of

W denotes indexing every W RBs. Let us remember

The output of each DFT processing subunit is

And satisfies the following conditions:

satisfaction of the relevant parameters:

a processing result obtained by at least performing conversion pre-coding (for example, scrambling, modulation, block-wise spreading, and the like) processing on the control information, wherein n is a position index of the processing result;

e ^jαn is a cyclically shifted coefficient; alpha is a cyclic shift parameter;

is the result after the cyclic shift processing;

optionally, the result after the cyclic shift process (i.e. the result after the cyclic shift process)

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

One possible approach 1 is to index every W RBs with W RBs as granularity. The value of the cyclic shift parameter α is the same for every W RBs, and the value of the cyclic shift parameter α is different for different W RBs, i.e.

When the W =1, the voltage is set to zero,

may be an index of PUCCH format4 per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUCCH format4 per RBG.

One possible processing mode 2 is to index every W RBs with W RBs as granularity. Shift the cycle by e ^jαn The QPSK symbols are replaced with randomly generated QPSK symbols. When the W =1, the voltage is set to zero,

may be an index of PUCCH format4 per RB. When W =2, one RBG is composed of 2 RBs,

may be an index of PUCCH format4 per RBG.

Based on the technical scheme shown in the tenth embodiment, multi-user multiplexing of the PUCCH format4 when the number of RBs used is greater than 1 is enabled, and meanwhile, the sequence of the PUCCH format4 has low PAPR performance and can meet the coverage requirement. And under the condition that different PUCCH formats 4 occupy different RB numbers or different RB initial positions, good multi-user multiplexing can be carried out. In addition, the flexible multiplexing capability is improved and the system capacity is improved while the PUCCH format4 coverage is ensured.

In addition, through the technical solutions shown in the sixth to tenth embodiments, 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 in terms of a method, and the apparatus to which the present application relates will be described below.

Please refer to fig. 5, which is a schematic diagram illustrating an implementation of a communication apparatus according to an embodiment of the present application, where the communication apparatus can specifically execute an implementation process related to a 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 one implementation, when the communication apparatus 500 is configured to perform the aforementioned process of generating the sequence, the following process is performed in the communication apparatus 500.

The processing unit 501 is configured to generate a first sequence, where a sequence length of the first sequence is positively correlated to the number of RB resource blocks of a first resource occupied by a first channel, and when the number of RB resource blocks of the first resource is greater than a first threshold, the first sequence is a sequence obtained by performing cyclic extension on a second sequence, where the first threshold is greater than or equal to 1;

the transceiver 502 is configured to transmit the first sequence, where the first sequence is carried in the first channel.

In a possible implementation manner of the third aspect or the fourth aspect, the first sequence is a cyclic extension of the second sequence, and the cyclic extension satisfies the following conditions:

P(n)＝S(n mod A),n＝0,…,L-1；

wherein P is the first sequence, and L is the length of the first sequence; s is the second sequence, A is the length of the second sequence, A is smaller than L, mod indicates the remainder operation, and n is the sequence index.

In a possible implementation manner, the second sequence is determined based on the number of subcarriers included in a second resource, and the second resource is used for carrying the second sequence.

In one possible implementation, 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,

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.

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

The number of RBs of the first resource is,

the number of subcarriers occupied by one RB.

In a possible implementation manner, the second sequence is a Low PAPR sequence type1, and the Low PAPR sequence type1 satisfies:

wherein r is the second sequence,

alpha is a cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.

In one possible implementation, the α satisfies:

wherein the content of the first and second substances,

the number of sub-carriers occupied by one RB,

is an index value of the second resource.

In one possible implementation of the method according to the invention,

the cyclic shift parameter comprises a randomly generated parameter; or the like, or a combination thereof,

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

In one possible implementation of the method according to the invention,

different values of the cyclic shift parameter are used for indicating that the second sequence is a sequence corresponding to the same data stream; and/or the presence of a gas in the gas,

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 one possible implementation, the second sequence is a Low peak to average power ratio type two Low PAPR sequence type2, and the Low PAPR sequence type2 satisfies:

wherein r is the second sequence,

is a base sequence of a Low PAPR sequence type2 sequence.

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

In one possible implementation of the method according to the invention,

the transceiving unit 501 is further configured to send first indication information, where the first indication information is used to indicate that the transform precoding of the first channel is enabled.

In one possible implementation of the method according to the invention,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format0 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format1 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a demodulation reference signal (DMRS) of a format1 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a DMRS sequence of a format4 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a physical downlink data channel (PDSCH), wherein the first sequence is a sequence of a DMRS (demodulation reference signal) borne in the PDSCH; or the like, or, alternatively,

the first channel is a physical uplink data channel (PUSCH), wherein the first sequence is a sequence of a DMRS carried in the PUSCH.

In one possible implementation, 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 a positive integer multiple of 5, or the number of RBs of the first resource is 1.

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

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

In one implementation, when the communication apparatus 500 is configured to perform the foregoing process of parsing the sequence, the following process is performed in the communication apparatus 500.

The transceiver 502 is configured to receive a first sequence, where the first sequence is carried in the first channel; the sequence length of the first sequence is positively correlated with the number of Resource Blocks (RBs) of a 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 circularly expanding a second sequence, and the first threshold is greater than or equal to 1;

the processing unit is used for analyzing the first sequence.

In a possible implementation manner, the first sequence is a cyclic extension of the second sequence, and a sequence obtained by the cyclic extension of the first sequence satisfies:

P(n)＝S(n mod A),n＝0,…,L-1；

wherein P is the first sequence, and L is the length of the first sequence; s is the second sequence, A is the length of the second sequence, A is smaller than L, mod indicates the remainder operation, and n is the sequence index.

In a possible implementation manner, the second sequence is determined based on the number of subcarriers included in a second resource, and the second resource is used for carrying the second sequence.

In one possible implementation, 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,

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.

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

The number of RBs of the first resource is,

the number of subcarriers occupied by one RB.

In one possible implementation, the second sequence is a Low PAPR sequence type1, and the Low PAPR sequence type1 satisfies:

wherein r is the second sequence,

alpha is a cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.

In one possible implementation, the α satisfies:

wherein the content of the first and second substances,

the number of sub-carriers occupied by one RB,

is an index value of the second resource.

In one possible implementation of the method according to the invention,

the cyclic shift parameter comprises a randomly generated parameter; or the like, or a combination thereof,

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

In one possible implementation of the method according to the invention,

different values of the cyclic shift parameter are used for indicating that the second sequence is a sequence corresponding to the same data stream; and/or the presence of a gas in the atmosphere,

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 one possible implementation manner, the second sequence is a Low peak-to-average power ratio type two Low PAPR sequence type2, and the Low PAPR sequence type2 satisfies:

wherein r is the second sequence,

of the Low PAPR sequence type2 sequenceA base sequence.

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

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

and sending first indication information, wherein the first indication information is used for indicating that the switching precoding of the first channel is enabled.

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

first indication information is received, wherein the first indication information is used for indicating that the conversion precoding of the first channel is enabled.

In one possible implementation of the method according to the invention,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format0 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format1 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a demodulation reference signal (DMRS) of a format1 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a DMRS sequence of a format4 carried in the PUCCH; or the like, or, alternatively,

the first channel is a physical downlink data channel (PDSCH), wherein the first sequence is a sequence of a DMRS (demodulation reference signal) borne in the PDSCH; or the like, or, alternatively,

the first channel is a physical uplink data channel (PUSCH), wherein the first sequence is a sequence of a DMRS carried in the PUSCH.

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 a positive integer multiple of 5, or the number of RBs of the first resource is 1.

In a possible implementation manner, the first sequence is carried in the first channel which is modulated by a single carrier waveform.

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

It should be noted that, for details of the information execution process of the units of the communication apparatus 500, corresponding technical effects, and the like, reference may be specifically made to the description of the foregoing method embodiments in the present application, and details are not described herein again.

Referring to fig. 6, a communication apparatus according to the foregoing embodiments is provided for an embodiment of the present application, and the communication apparatus may specifically be a terminal device in the foregoing embodiments, where a schematic diagram of a possible logical structure of the communication apparatus 600, and the communication apparatus 600 may include, but is not limited to, at least one processor 601 and a communication port 602. Further optionally, the apparatus may further include at least one of a memory 603 and a bus 604, and in this embodiment, the at least one processor 601 is configured to control the operation of the communication apparatus 600.

Further, the processor 601 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like. It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

It should be noted that the communication apparatus shown in fig. 6 may be specifically configured to implement other steps implemented by the terminal device in the foregoing corresponding method embodiment, and implement a technical effect corresponding to the terminal device, and the specific implementation manner of the communication apparatus shown in fig. 6 may refer to descriptions in the foregoing method embodiments, and details are not repeated here.

Referring to fig. 7, a schematic structural diagram of a communication device according to the foregoing embodiment is provided in the present application, where the communication device may specifically be a network device according to the foregoing embodiment, and a structure of the communication device may refer to the structure shown in fig. 7.

The communication device includes at least one processor 711 and at least one network interface 714. Further optionally, the communication device further comprises 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, by a bus, and in this embodiment, the connection may include various interfaces, transmission lines or buses, which is not limited in this embodiment. An 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 via a communication link. For example, the network interface 714 may include a network interface between the communication apparatus and the core network device, such as an S1 interface, and the network interface may include a network interface between the communication apparatus and another communication apparatus (e.g., another network device or a core network device), such as an X2 or Xn interface.

The processor 711 is mainly used for processing communication protocols and communication data, controlling the entire communication device, executing software programs, and processing data of the software programs, for example, for supporting the communication device to perform the actions described in the embodiments. The communication device may include a baseband processor and a central processing unit, the baseband processor is mainly used for processing a communication protocol and communication data, and the central processing unit is mainly used for controlling the whole terminal device, executing a software program, and processing data of the software program. The processor 711 in fig. 7 may integrate functions of a baseband processor and a central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by 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 the communication data may be built in the processor, or may be stored in the memory in the form of a software program, and the software program is executed by the processor to realize the baseband processing function.

The memory is primarily used for storing software programs and data. The memory 712, which may be separate, is coupled to the processor 711. Alternatively, the memory 712 may be integrated with the processor 711, for example, within one chip. The memory 712 can store program codes for executing the technical solutions of the embodiments of the present application, and is controlled by the processor 711, and the executed computer program codes can also be regarded as drivers of the processor 711.

Fig. 7 shows only one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be a memory element on the same chip as the processor, that is, an on-chip memory element, or a separate memory element, which is not limited in this embodiment.

A transceiver 713 may be used to support the reception or transmission of radio frequency signals between the communication device and the terminal and the transceiver 713 may be coupled to an antenna 715. The transceiver 713 includes a transmitter Tx and a receiver Rx. In particular, one or more antennas 715 may receive a radio frequency signal, and the receiver Rx of the transceiver 713 is configured to receive the radio frequency signal from the antenna, convert the radio frequency signal into a digital baseband signal or a digital intermediate frequency signal, and provide the digital baseband signal or the digital intermediate frequency signal to the processor 711, so that the processor 711 performs further processing on the digital baseband signal or the 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 a modulated digital baseband signal or a digital intermediate frequency signal from the processor 711, convert the modulated digital baseband signal or the digital intermediate frequency signal into a radio frequency signal, and transmit the radio frequency signal through the one or more antennas 715. Specifically, the receiver Rx may selectively perform one or more stages of down-mixing and analog-to-digital conversion processes on the rf signal to obtain a digital baseband signal or a digital intermediate frequency signal, and the sequence of the down-mixing and analog-to-digital conversion processes is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing and digital-to-analog conversion processes on the modulated digital baseband signal or the modulated digital intermediate frequency signal to obtain the rf signal, and the sequence of the up-mixing and digital-to-analog conversion processes is adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

A transceiver may also be referred to as a transceiver unit, transceiver, transceiving means, etc. Optionally, a device for implementing a receiving function in the transceiver unit may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit may be regarded as a sending unit, that is, the transceiver unit includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

It should be noted that the communication apparatus shown in fig. 7 may be specifically configured to implement the steps implemented by the network device in the foregoing method embodiments and implement the technical effect corresponding to the network device, and the specific implementation manner of the communication apparatus shown in fig. 7 may refer to the description in each of the foregoing method embodiments, and is not described here any more.

The embodiment of the present application further provides a computer-readable storage medium storing one or more computer-executable instructions, where when the computer-executable instructions are executed by a processor, the processor executes the method according to the implementation manner corresponding to the terminal device in the foregoing embodiment.

Embodiments of the present application further provide a computer-readable storage medium storing one or more computer-executable instructions, where when the computer-executable instructions are executed by a processor, the processor executes the method according to the implementation manner corresponding to the network device in the foregoing embodiments.

The embodiment of the present application further provides a computer program product (or called computer program) storing one or more computers, and when the computer program product is executed by the processor, the processor executes the method described in the implementation manner corresponding to the terminal device.

The embodiment of the present application further provides a computer program product storing one or more computers, and when the computer program product is executed by the processor, the processor executes the method described in the implementation manner corresponding to the network device.

The embodiment of the present application further provides a chip system, where the chip system includes at least one processor, and is configured to support a terminal device to implement the functions related to the implementation manner corresponding to the terminal device. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data to the at least one processor. In one possible design, the system-on-chip may further include a memory for storing necessary program instructions and data for the terminal device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

The embodiment of the present application further provides a chip system, where the chip system includes at least one processor, and is configured to support a network device to implement the functions related to the implementation manner corresponding to the network device. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data to the at least one processor. In one possible design, the system-on-chip may further include a memory, storage, for storing necessary program instructions and data for the network device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

The embodiment of the present application further provides a communication system, and the network system architecture includes the terminal device and the network device in any of the above embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims (40)

1. A method of communication, comprising:

generating a first sequence, wherein the sequence length of the first sequence is positively correlated with the number of Resource Blocks (RBs) of first resources occupied by a first channel, and when the number of RBs of the first resources is greater than a first threshold, the first sequence is obtained by circularly expanding a second sequence, and the first threshold is greater than or equal to 1;

and sending the first sequence, wherein the first sequence is loaded in the first channel.

2. A method of communication, comprising:

receiving a first sequence, wherein the first sequence is carried in the first channel; the sequence length of the first sequence is positively correlated with the number of Resource Blocks (RBs) of a first resource occupied by a first channel, and when the number of RBs of the first resource is greater than a first threshold, the first sequence is a sequence obtained by circularly expanding a second sequence, wherein the first threshold is greater than or equal to 1;

and resolving the first sequence.

3. The method according to claim 1 or 2, wherein the cyclic extension of the first sequence to the second sequence results in a sequence satisfying:

P(n)＝S(n mod A)，n＝0，...，L-1；

wherein P is the first sequence, and L is the length of the first sequence; s is the second sequence, A is the length of the second sequence, A is smaller than L, mod indicates a remainder operation, and n is a sequence index.

4. The method according to any of claims 1 to 3, wherein the second sequence is determined based on a number of subcarriers included in a second resource, and wherein the second resource is used for carrying the second sequence.

5. The method of 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,

the number of subcarriers occupied by one RB.

6. The method of any of claims 1 to 5, wherein the first sequence is determined based on a number of subcarriers included in the first resource when the number of RBs of the first resource is not greater than the first threshold.

7. The method of claim 6, wherein the first sequence is of a length of

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

the number of subcarriers occupied by one RB.

8. The method of any of claims 1 to 7, wherein the second sequence is a Low PAPR type1, and the Low PAPR type1 satisfies:

wherein r is the second sequence,

and alpha is a cyclic shift parameter, e is a natural constant, j is an imaginary number unit, and n is a sequence index.

9. The method of claim 8, wherein α satisfies:

wherein the content of the first and second substances,

the number of sub-carriers occupied by one RB,

is an index value of the second resource.

10. The method according to claim 8 or 9,

the cyclic shift parameters comprise randomly generated parameters; or the like, or, alternatively,

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

11. The method according to any one of claims 8 to 10,

different values of the cyclic shift parameter are used for indicating that the second sequence is a sequence corresponding to the same data stream; and/or the presence of a gas in the gas,

different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same communication apparatus.

12. The method of any of claims 1 to 7, wherein the second sequence is a Low peak to average power ratio type two Low PAPR sequence type2, and wherein the Low PAPR sequence type2 satisfies:

wherein r is the second sequence,

is a base sequence of a Low PAPR sequence type2 sequence.

13. The method according to any one of claims 1 to 12, wherein the first threshold value is 9 or 10.

14. The method of any one of claims 1,3 to 13, further comprising:

and sending first indication information, wherein the first indication information is used for indicating that the conversion precoding of the first channel is enabled.

15. The method of any one of claims 2 to 13, further comprising:

receiving first indication information, wherein the first indication information is used for indicating that the conversion precoding of the first channel is enabled.

16. The method of any one of claims 1 to 15,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format0 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format1 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a demodulation reference signal (DMRS) of a format1 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a DMRS of a format4 carried in the PUCCH; or the like, or, alternatively,

the first channel is a physical downlink data channel (PDSCH), wherein the first sequence is a sequence of a DMRS (demodulation reference signal) borne in the PDSCH; or the like, or a combination thereof,

the first channel is a physical uplink data channel (PUSCH), wherein the first sequence is a sequence of a DMRS borne in the PUSCH.

17. The method of any 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 of the first resource is a positive integer multiple of 5 or the number of RBs of the first resource is 1.

18. The method according to any of claims 1 to 17, wherein said first sequence is carried on said first channel modulated by a single carrier waveform.

19. The method of claim 18, wherein the modulation scheme of the single-carrier waveform is discrete fourier transform spread orthogonal frequency division multiplexing, DFT-s-OFDM.

20. A communication device, comprising a processing unit and a transceiving unit;

the processing unit is configured to generate a first sequence, where a sequence length of the first sequence is positively correlated with the number of resource blocks RB of a first resource occupied by a 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 a second sequence, and the first threshold is greater than or equal to 1;

the transceiver is configured to send the first sequence, where the first sequence is carried in the first channel.

21. A communication apparatus, comprising a processing unit and a transceiving unit;

the transceiver unit is configured to receive a first sequence, where the first sequence is carried in the first channel; the sequence length of the first sequence is positively correlated with the number of Resource Blocks (RBs) of a first resource occupied by a first channel, and when the number of RBs of the first resource is greater than a first threshold value, the first sequence is a sequence obtained by circularly expanding a second sequence, wherein the first threshold value is greater than or equal to 1;

the processing unit is configured to parse the first sequence.

22. The apparatus according to claim 20 or 21, wherein the cyclic extension of the first sequence for the second sequence results in a sequence satisfying:

P(n)＝S(n mod A)，n＝0，...，L-1；

wherein P is the first sequence, and L is the length of the first sequence; s is the second sequence, A is the length of the second sequence, A is smaller than L, mod indicates a remainder operation, and n is a sequence index.

23. The apparatus of any of claims 20 to 22, wherein the second sequence is determined based on a number of subcarriers included in a second resource, and wherein the second resource is used for carrying the second sequence.

24. The apparatus of 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,

the number of subcarriers occupied by one RB.

25. The apparatus of any of claims 20 to 24, wherein the first sequence is determined based on a number of subcarriers included in the first resource when the number of RBs of the first resource is not greater than the first threshold.

26. The apparatus of claim 25, wherein the first sequence is of length if the number of RBs of the first resource is not greater than the first threshold

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

the number of subcarriers occupied by one RB.

27. The apparatus of any of claims 20 to 26, wherein the second sequence is a Low PAPR sequence type1, and wherein the Low PAPR sequence type1 satisfies:

wherein r is the second sequence,

is said LThe base sequence of the ow PAPR sequence type1 sequence, alpha represents a cyclic shift parameter, e is a natural constant, j is an imaginary unit, and n is a sequence index.

28. The apparatus of claim 27, wherein a satisfies:

wherein the content of the first and second substances,

the number of sub-carriers occupied by one RB,

is the index value of the second resource.

29. The apparatus of claim 27 or 28,

the cyclic shift parameters comprise randomly generated parameters; or the like, or, alternatively,

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

30. The apparatus of any one of claims 27 to 29,

different values of the cyclic shift parameter are used for indicating that the second sequence is a sequence corresponding to the same data stream; and/or the presence of a gas in the atmosphere,

different values of the cyclic shift parameter are used to indicate that the second sequence is a sequence corresponding to the same communication apparatus.

31. The apparatus according to any of claims 20 to 26, wherein the second sequence is a Low peak to average power ratio type two Low PAPR sequence type2, and the Low PAPR sequence type2 satisfies:

wherein r is the second sequence,

is a base sequence of a Low PAPR sequence type2 sequence.

32. The apparatus according to any one of claims 20 to 31, wherein the first threshold value is 9 or 10.

33. The apparatus of any one of claims 20, 22 to 32, further comprising:

and sending first indication information, wherein the first indication information is used for indicating that the conversion precoding of the first channel is enabled.

34. The apparatus of any one of claims 21 to 32, further comprising:

receiving first indication information, wherein the first indication information is used for indicating that conversion precoding of the first channel is enabled.

35. The apparatus of any one of claims 20 to 34,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format0 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a format1 carried in the PUCCH; or the like, or, alternatively,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a demodulation reference signal (DMRS) of a format1 carried in the PUCCH; or the like, or a combination thereof,

the first channel is a Physical Uplink Control Channel (PUCCH), wherein the first sequence is a sequence of a DMRS of a format4 carried in the PUCCH; or the like, or, alternatively,

the first channel is a physical downlink data channel (PDSCH), wherein the first sequence is a sequence of a DMRS (demodulation reference signal) borne in the PDSCH; or the like, or, alternatively,

the first channel is a physical uplink data channel (PUSCH), wherein the first sequence is a sequence of a DMRS borne in the PUSCH.

36. The apparatus of any of claims 20 to 35, 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 of the first resource is a positive integer multiple of 5, or the number of RBs of the first resource is 1.

37. The apparatus according to any of claims 20 to 36, wherein the first sequence is carried on the first channel modulated by a single carrier waveform.

38. The apparatus of claim 37, wherein the modulation scheme of the single-carrier waveform is discrete fourier transform spread orthogonal frequency division multiplexing, DFT-s-OFDM.

39. A communications apparatus, comprising:

a processor and a memory;

the memory is to store program instructions;

the processor is configured to execute the program instructions to cause the communication device to implement the method of any of claims 1-19.

40. A computer-readable storage medium for storing a computer program or instructions for causing a computer to perform the method of any one of claims 1 to 19 when the computer program or instructions are run on the computer.

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