WO2021062872A1

WO2021062872A1 - Communication method and device

Info

Publication number: WO2021062872A1
Application number: PCT/CN2019/109814
Authority: WO
Inventors: 曲秉玉; 龚名新; 位祎
Original assignee: 华为技术有限公司
Priority date: 2019-10-03
Filing date: 2019-10-03
Publication date: 2021-04-08
Also published as: CN114503487B; CN114503487A

Abstract

A communication method and device. The communication method comprises: determining a reference signal sequence having a length of M, M being an integer greater than 1; transmitting the reference signal sequence, the reference signal sequence being determined on the basis of a first base sequence having a length of M, the first base sequence belonging to a first sequence group, the first sequence group being determined from X sequence groups according to a first group of indices u, where u ∈ {0, 1,..., X-1}, X being an integer greater than 30, the base sequence having the length of M in the first sequence group being determined on the basis of a ZC sequence having a length of N, wherein a value range of M at least comprises two elements in a first integer set, the first integer set comprises integers greater than or equal to X/2 and less than or equal to X, when M belongs to the first integer set, N is the smallest prime integer greater than or equal to X, or N is the smallest prime integer greater than or equal to S, and S=max(X, 2M). The method enables provision of more sequences.

Description

Communication method and device

Technical field

This application relates to the field of mobile communication technology, and in particular to a communication method and device.

Background technique

In systems such as long term evolution (LTE) and new radio (NR), uplink reference signals, such as uplink demodulation reference signal (DMRS) and uplink sounding reference signal (SRS) ) And the sequence of the random access preamble signal are both generated according to the base sequence (base sequence). The base sequence may be generated according to a (Zadoff-Chu, ZC) sequence. For example, the base sequence may be the ZC sequence itself, or the base sequence may be a sequence generated by cyclic expansion or interception of the ZC sequence.

As an example, the upstream sounding reference signal is SRS, and the terminal device needs to determine the SRS sequence according to the base sequence before sending the SRS. In the 3rd generation partnership project (3GPP) standard, a variety of M SRS sequences are defined. Among them, when M is an integer greater than or equal to 36 and less than 72, 30 base sequences are defined, where the 30 base sequences are generated from 30 different roots of the ZC sequence of length N. Further, the 30 base sequences are divided into 30 groups, and the base sequences of different groups can be allocated to different cells. When M is an integer greater than or equal to 72, 60 base sequences are defined, where the 60 base sequences are generated from 60 different root ZC sequences of length N. Further, the 60 base sequences are divided into 30 groups, and the base sequences of different groups can be allocated to different cells. The 3GPP standard also defines that a base sequence of length M is generated from a ZC sequence of length N, where N is the largest prime number less than or equal to M.

The base sequence in a sequence group will be allocated to a cell for the terminal equipment of the cell to generate the SRS sequence. However, generally speaking, in a cell, each terminal device that transmits a reference signal sequence of the same length on the same time-frequency resource uses a reference signal sequence generated by the same base sequence in the group. In other words, at present, there is only one base sequence for generating SRS sequences of the same length in a cell. At this time, each terminal device uses different time-domain cyclic shifts and/or time-frequency domain resources to ensure the correctness between SRS sequences. Intercourse.

Since the number of time-domain cyclic shifts and the number of available time-frequency domain resources that can actually obtain better orthogonality in the system are limited, when the number of terminal devices in a cell is large, the available SRS in a cell The number of sequences cannot satisfy the number of huge terminal devices. This leads to the need to allow different terminal devices in a cell to send SRS sequences in turn in a time division manner, so the period for sending SRS is longer. However, the channel has time-varying characteristics. Due to the long period of the SRS, the channel state information obtained by the base station through the SRS differs greatly from the actual channel state information, which affects the performance of the system.

In order to improve the accuracy of the channel state information, each cell needs to support more terminal devices to simultaneously transmit SRS sequences, which requires an increase in the number of base sequences with the same length that can be used in each cell. It can be seen that the current trend is to require more base sequences, for example, from the current 30 sequence groups to 60 sequence groups, and each sequence group has at least one base sequence of length M. However, since the length of the ZC sequence currently used to generate the base sequence of length M is N, and N is the largest prime number less than or equal to M, then for a shorter base sequence, such as M=36, the length of the ZC sequence used N is 31, and a ZC sequence with a length of 31 can only generate 30 base sequences at most, which cannot achieve the goal of capacity expansion.

Summary of the invention

The embodiments of the present application provide a communication method and device for providing more sequences.

In the first aspect, a communication method is provided. The execution subject of the method may be a terminal device or a chip applied to the terminal device. In the following, the execution subject is a terminal device as an example for description. The method includes: determining a reference signal sequence, the length of the reference signal sequence is M, and M is an integer greater than 1, sending the reference signal sequence; the reference signal sequence is determined by a first base sequence of length M, The first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X- 1}, the X is an integer greater than 30, and the base sequence of length M in the first sequence group is determined by the ZC sequence of length N; wherein the value range of M includes at least the first integer set The first integer set is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to the first integer set, the N is greater than or equal to X Or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

In a second aspect, a communication method is provided. The execution subject of the method may be a network device or a chip applied to the network device. The following describes the example that the execution subject is a network device. The method includes: a network device sends configuration information, the configuration information is used to configure a first base sequence, the network device receives a reference signal sequence, the reference signal sequence is determined by the first base sequence of length M , The first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X -1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence with a length of M, and the at least one base sequence with a length of M is determined by a ZC sequence with a length of N , Wherein the value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M When belonging to the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

In the above-mentioned solutions of the first and second aspects, the sequence groups in the system are expanded from 30 to X, and X is an integer greater than 30. Wherein, each of the X sequence groups includes at least one base sequence of length M. That is, there are at least X base sequences of length M in the system. When M belongs to the first set of integers, N is the smallest prime number greater than or equal to X, that is, for a base sequence of length M, the length of the ZC sequence used to generate the base sequence N is the smallest prime number greater than or equal to X ; Or, when N is the smallest prime number greater than or equal to S, for the smaller value of M, the value of N becomes larger, so that more base sequences can be generated based on the ZC sequence of length N, and thus the increase can be achieved The number of sequence groups and at least one base sequence of length M in each sequence group is expanded.

In the above solutions of the first and second aspects, the first base sequence is determined by the first ZC sequence of length N. In a possible design, the root q of the first ZC sequence Satisfy:

among them,

Z is a positive integer, u'is an integer determined according to the first group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to

The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.

In another possible design, the root q of the first ZC sequence satisfies:

q=(e+B)mod N, where B is a predefined value or an integer determined according to the sequence number of the reference signal sequence, and e is according to the group index u of the first sequence group and all The length of the first ZC sequence is an integer determined by N.

Adopting any one of the above two possible designs can satisfy the X sequence groups of the above design, that is, there are at least X base sequences of length M in the system. Moreover, the cross-correlation value between the reference signal sequences generated by any two base sequences in the X base sequences of length M is small, so any two base sequences in the X base sequences of length M The interference between the reference signal sequences generated by the sequence is relatively low. Therefore, the network device can allocate one or a smaller number of sequence groups to cells with fewer terminal devices, and can allocate more sequence groups to cells with more terminal devices, so as to shorten the reference signal sequence transmission cycle as much as possible. At the same time, since the interference between the reference signal sequences generated by the X base sequences is relatively low, no matter what sequence group allocation method the network device uses, it can ensure that the interference between the reference signal sequences in the cell is low. And to ensure that the interference between the reference signal sequences between the cells is also low.

In combination with the foregoing one possible design, the Z is the smallest prime number greater than or equal to X; or, the Z is the smallest prime number greater than or equal to 30C.

Given the possible values of Z, X sequence groups provided in the embodiment of the present application can be obtained.

A possible combination of the above design, the set includes a first sequence Q ₁ is a root ZC sequence and a length of ₁ N determined base sequence of length M ₁ and q ₂ from the root of N ₂ and a length of the ZC The sequence determines the _{base sequence of length M 2} and the root q ₁ and root q ₂ satisfy the following formula:

Here is an example of constructing the first sequence group using the method of the embodiment of the present application.

In a possible design, the corresponding relationship between u'and u satisfies:

When u∈{30,31,...,X-1}, u'=g(u), g(u)∈{0,1,2,...,30C-1}-{0, C,2·C,...,29·C}.

Exemplary,

When u∈ {0,1, ..., 29} when, u '= C · u, and the first sequence group q ₁ comprises a root of N ₂ and a length of a ZC sequence of length M ₂ determined The base sequence of, the base sequence _{of length M 2} determined by the ZC sequence with _{root of q 2} and length N ₂ and the base sequence _{of length M 3} determined by the ZC sequence with _{root of q 3} and length N ₃ , And the root q ₁ , the root q ₁ and the root q ₁ satisfy the following formula:

Here is a corresponding relationship between u'and u. When the existing base sequence is retained in the system, it can also ensure the mutual relationship between the reference signal sequences generated by any two base sequences belonging to any two different sequence groups. The correlation value is small, that is, the interference between the reference signals generated by any two base sequences belonging to any two different sequence groups is low. When the network equipment allocates the any two sequence groups to the terminal equipment in the same cell, it can ensure that the interference between the reference signal sequences in the cell is low; when the network equipment allocates the any two sequence groups to different When the terminal equipment in the small area, it can ensure that the interference between the reference signal sequences between the cells is low.

In a third aspect, a communication method is provided, and the execution subject of the method may be a terminal device or a chip applied to the terminal device. In the following, the execution subject is a terminal device as an example for description. The method includes: determining a reference signal sequence, the length of the reference signal sequence is M, and M is an integer greater than 1, sending the reference signal sequence; the reference signal sequence is determined by a first base sequence of length M, The first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X- 1}, the X is an integer greater than 30, the base sequence of length M in the first sequence group is determined by the ZC sequence of length N; there is a first sequence group set in the X sequence groups, The first sequence group set includes 30 sequence groups among the X sequence groups; wherein, when the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M; When the first sequence group does not belong to the first sequence group set, the value range of M includes at least two elements in the first integer set, and the first integer set is greater than or equal to X/2 and A set of integers less than or equal to X, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X; or, when the first sequence group does not belong to the first sequence When grouping, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

In a fourth aspect, a communication method is provided, and the execution subject of the method is a network device, or a chip applied to the network device. In the following, the execution subject is a network device as an example for description. The method includes: the network device sends configuration information, the configuration information is used to configure a first base sequence, the network device receives a reference signal sequence, and the reference signal sequence is generated by The first base sequence of length M is determined, the first base sequence belongs to a first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence of length M, and the at least one length of M The base sequence is determined by a ZC sequence of length N; there is a first sequence group set in the X sequence groups, and the first sequence group set includes 30 sequence groups in the X sequence groups; wherein, When the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M; when the first sequence group does not belong to the first sequence group set, the value of M The range includes at least two elements in the first set of integers, the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to the first set of integers, The N is the smallest prime number greater than or equal to X; or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M ).

In the solutions of the third aspect and the fourth aspect, the sequence groups in the system are expanded from 30 to X, and X is an integer greater than 30. There is a first sequence group set in the X sequence groups, and the first sequence group set is composed of 30 sequence groups in the X sequence groups. When the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M. When the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to X. For example, when M=36 and X=60, there are 30 sequence groups in 60 sequence groups, and at least one of the base sequences with a length of 36 in each of the 30 sequence groups is It is generated from a ZC sequence with a length of 31, and at least one of the base sequences with a length of 36 in each of the other 30 sequence groups is generated from a base sequence with a length of 61. Through this scheme, the goal of expanding the sequence group can be achieved.

In the solutions of the third aspect and the fourth aspect, the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,

With the above possible design, the X sequence groups of the above design can be satisfied, that is, there are at least X base sequences of length M in the system.

In a possible design, when the first sequence group belongs to the first sequence group set, the Z is 31;

When the first sequence group does not belong to the first sequence group set, the Z is the smallest prime number greater than or equal to X, or the Z is the smallest prime number greater than or equal to 30C.

The possible values of Z are given here, and X sequence groups provided in the embodiment of the present application can be obtained.

In a possible design, the first sequence group set is composed of sequence groups whose group index is 0-29, and the corresponding relationship between u'and u satisfies:

u∈{0,1,...,29}, u'=u; or, u∈{30,31,...,X-1}, u'∈{0,1,...,30C -1}-{0,C,2C,...,29C}.

Exemplarily, u∈{30,31,...,X-1},

Here is a possible correspondence between u'and u. When the existing base sequence is retained in the system, it can ensure that the reference signal sequence generated by any two base sequences belonging to any two different sequence groups is The cross-correlation value is small, that is, the interference between the reference signals generated by any two base sequences belonging to any two different sequence groups is low. When the network equipment allocates the any two sequence groups to the terminal equipment in the same cell, it can ensure that the interference between the reference signal sequences in the cell is low; when the network equipment allocates the any two sequence groups to different When the terminal equipment in the small area, it can ensure that the interference between the reference signal sequences between the cells is low.

In a fifth aspect, a communication device is provided. For beneficial effects, reference may be made to the description in the first aspect, which will not be repeated here. The communication device has the function of implementing the behavior in the method embodiment of the first aspect. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the communication device includes: a transceiving unit and a processing unit, the processing unit is configured to determine a reference signal sequence, the reference signal sequence length is M, and M is an integer greater than 1; the transceiving unit Unit for sending the reference signal sequence; wherein the reference signal sequence is determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, and the first sequence group is Determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X-1}, the X is an integer greater than 30, in the first sequence group The base sequence of length M is determined by the ZC sequence of length N;

Wherein, the value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to In the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M). These modules can perform the corresponding functions in the above-mentioned method example of the first aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In a sixth aspect, a communication device is provided. For beneficial effects, reference may be made to the description in the first aspect, which will not be repeated here. The communication device has the function of realizing the behavior in the method embodiment of the second aspect. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the communication device includes: a transceiving unit and a processing unit, the transceiving unit is configured to send configuration information based on the control of the processing unit, and the configuration information is used to configure the first base sequence, Receiving a reference signal sequence, the reference signal sequence being determined by the first base sequence of length M;

Wherein, the first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,..., X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence with a length of M, and the at least one base sequence with a length of M is determined by a ZC sequence with a length of N of;

Wherein, the value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to In the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M). These modules can perform the corresponding functions in the above-mentioned method example of the second aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In a seventh aspect, a communication device is provided. For beneficial effects, reference may be made to the description in the third aspect, which will not be repeated here. The communication device has the function of implementing the behavior in the method embodiment of the third aspect. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the communication device includes: a transceiving unit and a processing unit, the processing unit is configured to determine a reference signal sequence, the reference signal sequence length is M, and M is an integer greater than 1; the transceiving unit Unit for sending the reference signal sequence;

[Corrected according to Rule 91 09.04.2020]
Wherein, the reference signal sequence is determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, and the first sequence group is selected from X sequence groups according to a first group index u X is an integer greater than 30 in the u∈{0,1,...X-1}, and the base sequence of length M in the first sequence group is composed of ZC of length N The sequence is determined; there is a first sequence group set in the X sequence groups, and the first sequence group set includes 30 sequence groups in the X sequence groups;

Wherein, when the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M;

Alternatively, when the first sequence group does not belong to the first sequence group set, the value range of M includes at least two elements in a first integer set, and the first integer set is greater than or equal to X/ 2 is a set consisting of integers less than or equal to X, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X;

Or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M). These modules can perform the corresponding functions in the method example of the third aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In an eighth aspect, a communication device is provided. For beneficial effects, reference may be made to the description in the third aspect, which will not be repeated here. The communication device has the function of implementing the behavior in the method embodiment of the fourth aspect. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the communication device includes: a transceiving unit and a processing unit, the transceiving unit is configured to send configuration information based on the control of the processing unit, and the configuration information is used to configure the first base sequence, Receiving a reference signal sequence, the reference signal sequence being determined by the first base sequence of length M;

Wherein, the first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,..., X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence with a length of M, and the at least one base sequence with a length of M is determined by a ZC sequence with a length of N There is a first sequence group set in the X sequence groups, and the first sequence group set includes 30 sequence groups in the X sequence groups;

Or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M). These modules can perform the corresponding functions in the above-mentioned method example of the fourth aspect. For details, please refer to the detailed description in the method example, which will not be repeated here.

In a ninth aspect, a communication device is provided. The communication device may be the terminal device in the foregoing method embodiment, or a chip set in the terminal device. The communication device includes a communication interface, a processor, and optionally, a memory. The memory is used to store a computer program or instruction, and the processor is coupled with the memory and a communication interface. When the processor executes the computer program or instruction, the communication device executes the method executed by the terminal device in the foregoing method embodiment.

In a tenth aspect, a communication device is provided. The communication device may be the network device in the foregoing method embodiment, or a chip set in the network device. The communication device includes a communication interface, a processor, and optionally, a memory. The memory is used to store a computer program or instruction, and the processor is coupled with the memory and a communication interface. When the processor executes the computer program or instruction, the communication device executes the method executed by the network device in the foregoing method embodiment.

In an eleventh aspect, a computer program product is provided. The computer program product includes: computer program code, which when the computer program code is running, causes the methods executed by the terminal device in the above aspects to be executed.

In a twelfth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is executed, the method executed by the network device in the above aspects is executed.

In a thirteenth aspect, the present application provides a chip system, which includes a processor, and is configured to implement the functions of the terminal device in the methods of the foregoing aspects. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a fourteenth aspect, the present application provides a chip system, which includes a processor, and is configured to implement the functions of the network device in the methods of the foregoing aspects. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a fifteenth aspect, this application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the terminal device in the above aspects is implemented.

In a sixteenth aspect, the present application provides a computer-readable storage medium that stores a computer program, and when the computer program is executed, the method executed by the network device in the above aspects is implemented.

Description of the drawings

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the application;

FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the application;

FIG. 3 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 4 is a schematic structural diagram of another communication device provided by an embodiment of this application;

FIG. 5 is a schematic diagram of another structure of a communication device provided by an embodiment of this application;

FIG. 6 is a schematic diagram of still another structure of a communication device provided by an embodiment of this application;

FIG. 7 is a schematic diagram of still another structure of another communication device provided by an embodiment of this application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Before introducing this application, first briefly explain some terms in the embodiments of this application, so as to facilitate the understanding of those skilled in the art.

1) Terminal devices, including devices that provide users with voice and/or data connectivity, such as handheld devices with wireless connection functions, or processing devices connected to wireless modems. The terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. The terminal equipment can include UE, wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine communication (machine-to-machine/machine communication). -type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station) , Access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, and mobile devices with built-in computers, and so on. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA), and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).

2) Network equipment, for example, includes access network (access network, AN) equipment, such as a base station (for example, an access point). It can also refer to devices that communicate with wireless terminal devices over the air interface, such as other terminal devices. Or, for example, a network device in a V2X technology is a roadside unit (RSU). The base station can be used to convert received air frames and Internet Protocol (IP) packets into each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include a long term evolution (LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolutional NodeB) in a long term evolution-advanced (LTE-A) system, Or it may include the next generation node B (gNB) in the 5G NR system, or it may include the centralized unit (CU) in the cloud radio access network (Cloud RAN) system. And distributed unit (DU), the embodiment of the present application is not limited.

3) Reference signal (RS) is a signal used for channel estimation or channel sounding in a communication system. In the embodiment of the present application, the RS sequence may be an uplink sounding reference signal (SRS) sequence, a demodulation reference signal (DMRS) sequence, and a physical random access channel (PRACH). )sequence. The RS sequence may also be a downlink DMRS sequence.

For example, SRS is used as a reference signal sent by terminal equipment. The network side equipment obtains uplink channel state information by measuring the SRS sequence sent by the terminal equipment. In a time division duplex (TDD) system, network-side equipment can use the reciprocity of uplink and downlink channel state information to obtain downlink channel state information through uplink channel state information. The channel state information is used for precoding and modulation and coding method determination during downlink data transmission. Accurate channel state information helps to improve data transmission efficiency.

4) Base sequence (base sequence), a sequence used to generate the RS sequence. For example, suppose the base sequence of length M is r(m), m=0,1,2,...,M-1, where M is an integer greater than 1. The RS sequence generated by r(m) can be: Aexp(jαm)r(m), where m=0,1,2,...,M-1, M is an integer greater than 1; α is determined by the time domain The value determined by the cyclic shift, α is a real number; j is an imaginary unit; A is a complex number.

5) ZC sequence, a sequence used to generate the base sequence. The base sequence can be the ZC sequence itself, or the ZC sequence is generated by cyclic shift expansion or interception of the generated sequence.

For example, the ZC sequence z _q (n) of length N is:

[Corrected according to Rule 91 23.03.2020]

Among them, N is an integer greater than 1, q is the root index of the ZC sequence, which is a natural number that is relatively prime to N, and 0<q<N.

The sequence of length M generated from the ZC sequence, that is, the base sequence r(m) can be z _q (mmod N), where m=0,1,...,M-1.

6) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "Multiple" refers to two, three or more. In view of this, "multiple" may also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two, three or more. For example, including at least one means including one, two or more, and does not limit which ones are included. For example, including at least one of A, B and C, then the included can be A, B, C, A and B, A and C, B and C, or A and B and C. "At least two" can be understood as two, three or more. In the same way, the understanding of "at least one" and other descriptions is similar. "And/or" describes the association relationship of the associated object, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, or B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

And, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or order of multiple objects. Importance. For example, the first base sequence and the second base sequence are only for distinguishing different base sequences, and do not indicate the difference in priority or importance of the two base sequences.

In the 3GPP standard, the length M of a variety of SRS sequences is determined. For each value of M greater than or equal to 36 and less than 72, 30 base sequences are respectively defined; for each value of M greater than or equal to 72, 60 base sequences are respectively defined. These base sequences are generated from ZC sequences with the same length and different root indexes. For an SRS sequence of length M, the length N of the ZC sequence that generates the SRS sequence can be determined. Currently, N is defined as the largest prime number less than or equal to M.

Further, these 30 base sequences or 60 base sequences are divided into 30 groups, and the base sequences of different groups can be allocated to different cells for use by terminal devices in the cells.

At present, the root index q defined in the 3GPP standard can be determined by formula (2):

In formula (2), u is the group index of the sequence group, and v is the root sequence number in each sequence group. Among them, when M is an integer greater than or equal to 36 and less than 72, u=0,1,...,29, which means that there are 30 groups; v=0, that is, there is a root sequence number in each sequence group, and it can also be It is understood that each sequence group has a base sequence that can be used to generate an SRS sequence of length M. When M is an integer greater than or equal to 72, u=0,1,...,29, which means that there are 30 groups; v=0 or v=1, that is, there are two root numbers in each sequence group. It is understood that there are two base sequences for generating SRS sequences of length M in each sequence group. u and v may be determined by the configuration information sent by the network side device.

Specifically, when M is an integer greater than or equal to 36 and less than 72, taking M=36 as an example, the length of the ZC sequence that generates the base sequence is 31, that is, the length of the ZC sequence that generates 30 sets of base sequences is 31. Refer to Table 1 for the relationship between the root index of these ZC sequences and the group number of the base sequence.

Table 1

When M is an integer greater than or equal to 72, taking M=72 as an example, the length of the ZC sequence that generates the base sequence is 71, that is, the ZC sequence of length 71 is the ZC sequence that generates 30 sets of base sequences, and the root index of these ZC sequences The relationship with the group number of the base sequence can be referred to Table 2:

Table 2

Generally speaking, the terminal equipment in the same cell uses the same u and v at the same time. That is to say, each terminal device in the same cell transmits an SRS sequence of the same length at the same time, and the SRS sequence of the same length is generated using the same base sequence in a sequence group. When the SRS sequence is generated from the same base sequence, each terminal device uses different time domain cyclic shifts and/or time-frequency domain resources to ensure the orthogonality between the SRS sequences. Considering that the cross-correlation between the reference signal sequences determined by two base sequences with the same length in the same sequence group is poor, then the two base sequences with the same length in the same sequence group are allocated to different terminal devices. , It may cause large interference between different terminal devices. Therefore, even when there are 60 root indicators, that is, when there are two base sequences with the same length in a sequence group, users in a cell will not use the same sequence group on the same time-frequency resources. Two base sequences with the same length generate reference signals to avoid interference between different terminal devices as much as possible.

When M is greater than or equal to 72, two base sequences with the same length in the same sequence group are used as hopping sequences, that is, at different moments, the base sequence used by a terminal device can be used in the two base sequences. The hopping is performed in accordance with the designed pattern to randomize the interference between cells. In the sequence hopping process, at the same moment, all terminal devices in a cell that send the SRS sequence of the same length still use the same base sequence to generate the SRS sequence. When the network side device does not enable the hopping sequence, it can only use the 30 root indicators in the first row of Table 2, and the root indicators used by all terminal devices in a cell that send SRS sequences with the same length are the same. When the terminal device generates the SRS sequence, different cyclic shifts and frequency domain resources are used to ensure the orthogonality of the SRS sequence of different terminal devices.

It can be seen that in the current system, at the same time, there is only one base sequence that can be used by a terminal device that transmits an SRS sequence of the same length in a cell. Since the number of time-domain cyclic shifts and the number of available time-frequency domain resources that can actually obtain better orthogonality in the system are limited, when the number of terminal devices in a cell is large, the available SRS in a cell The number of sequences cannot satisfy the number of huge terminal devices. This leads to the need to allow different terminal devices in the cell to send SRS sequences in turn in a time-division manner, so the period of sending SRS is longer. It is easy to cause the channel state information obtained by the network side device through the SRS to be quite different from the actual channel state information, which affects the performance of the system.

In order to improve the accuracy of the channel state information, each cell needs to support more terminal devices to simultaneously transmit SRS sequences, which requires an increase in the number of base sequences of the same length used in each cell.

One of the current solutions is to add one, two or three base sequences to each sequence group. The newly added base sequences are not included in the existing 30 base sequences, and the newly added base sequences can guarantee the same The cross-correlation value of the SRS sequence generated by any cyclic shift of any two base sequences with the same length in the group is sufficiently low. For example, at the same time, the number of base sequences with the same length that can be used in each group changes from one to two, three, or four. Correspondingly, it can support that the number of terminal devices in a cell is doubled, tripled, or quadrupled, and the SRS transmission period of the terminal device can be reduced to 1/2, 1/3, or 1/4 of the original.

Since the length of the ZC sequence currently used to generate the base sequence of length M is N, N is the largest prime number less than or equal to M. Then for a base sequence with a shorter length, for example, M=36, the length of the ZC sequence used is N=31, and the ZC sequence with a length of 31 can only generate 30 base sequences at most, which cannot achieve the goal of expansion.

In view of this, the embodiment of the present application provides a possible solution, in which the sequence group in the system is expanded from 30 to X, and X is an integer greater than 30. Wherein, each of the X sequence groups includes at least one base sequence of length M. That is, there are at least X base sequences of length M in the system.

In a possible design, the base sequence of length M is generated from the ZC sequence of length N, when

When N is the smallest prime number greater than or equal to X, that is, for a base sequence of length M, the length N of the ZC sequence used to generate the base sequence is the smallest prime number greater than or equal to X. Then, for the smaller value of M, the value of N becomes larger, so that more base sequences can be generated based on the ZC sequence of length N, and then the number of sequence groups can be increased, and each sequence group has at least An expansion target of a base sequence of length M. It should be noted that in this article,

Means all greater than or equal to

A set of integers less than or equal to X.

In another possible design, there is a first sequence group set in the X sequence groups, and the first sequence group set is composed of 30 sequence groups in the X sequence groups. The base sequence of length M is generated from the ZC sequence of length N. When the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M. When the first sequence group does not belong to the first sequence group set and

When, N is the smallest prime number greater than or equal to X. For example, when M=36 and X=60, there are 30 sequence groups in 60 sequence groups, and at least one of the base sequences with a length of 36 in each of the 30 sequence groups is composed of A ZC sequence with a length of 31 is generated, and at least one of the base sequences with a length of 36 in each of the other 30 sequence groups is generated by a base sequence with a length of 61. In this way, the goal of expanding the sequence group can be achieved.

The technical solutions provided by the embodiments of the present application can be applied to a 5G NR system, or can be applied to an LTE system, or can be applied to a next-generation mobile communication system or other similar communication systems, and are not specifically limited.

Please refer to FIG. 1, which is an application scenario of an embodiment of this application. Figure 1 includes network equipment and terminal equipment, and the terminal equipment is connected to a network equipment. Of course, the number of terminal devices in Figure 1 is just an example. In practical applications, network devices can provide services for multiple terminal devices, and all or some of the multiple terminal devices can be provided by the embodiments of this application. The method sends a signal to the network device.

The following describes the technical solutions provided by the embodiments of the present application in conjunction with the drawings.

The embodiment of the present application provides a communication method. Please refer to FIG. 2 which is a flowchart of the method. In the following introduction process, the application of this method to the network architecture shown in FIG. 1 is taken as an example. In addition, the method can be executed by two communication devices, such as a first communication device and a second communication device, where the first communication device can be a network device or can support the network device to implement the functions required by the method. The communication device or the first communication device may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, and of course it may also be other communication devices, such as a chip system. The same is true for the second communication device. The second communication device may be a network device or a communication device capable of supporting the functions required by the network device to implement the method, or the second communication device may be a terminal device or capable of supporting the terminal device to implement the method. The communication device with the required functions can of course also be other communication devices, such as a chip system. And there are no restrictions on the implementation of the first communication device and the second communication device. For example, the first communication device may be a network device, the second communication device is a terminal device, or both the first communication device and the second communication device are network devices. The device, or the first communication device and the second communication device are both terminal devices, or the first communication device is a network device, and the second communication device is a communication device capable of supporting the terminal device to implement the functions required by the method, and so on. Among them, the network device is, for example, a base station.

For ease of introduction, in the following, the method is executed by a network device and a terminal device as an example, that is, the first communication device is a terminal device and the second communication device is a network device as an example. If this embodiment is applied to the network architecture shown in FIG. 1, therefore, the network device described below may be the network device in the network architecture shown in FIG. 1, and the terminal device described below may be the network device shown in FIG. 1. The terminal equipment in the network architecture shown.

S201. The network device sends configuration information, where the configuration information is used to configure a first base sequence, the length of the first base sequence is M, the first base sequence belongs to a first sequence group, and the first sequence group is based on The first group index u is determined from X sequence groups, and u∈{0,1,...,X-1}, X is an integer greater than 30, and the first base sequence is composed of a length of N The first ZC sequence is determined, or the first base sequence is determined by a ZC sequence of length N. It should be understood that the value of u can start from 0 or 1, so the relationship of X and the value of the parameter can be changed correspondingly, which will not be repeated here. In addition, the first sequence group here is determined from X sequence groups according to the first group index u, or the first sequence group is a sequence group associated with the first group index u, and the sequence group It is one of X sequence groups.

Among them, the base sequence of length M in each sequence group is determined by the ZC sequence of length N. M, X, and N can have an association relationship. According to the value of M belonging to the first integer set, the way to determine N is and The way to determine N is different according to the value of M that does not belong to the first set of integers. The following describes the possible association relationships of M, X, and N respectively.

In the first possible design, when

When, N is the smallest prime number greater than or equal to X. For ease of description, in this article, we will

Defined as the first set of integers. A corresponding example, M satisfies

And N is the smallest prime number greater than or equal to X.

For the value of N, in the second possible design, N is the smallest prime number greater than or equal to S, and S=max(X, 2M). It should be noted that A=max(B, C) means that the value of A is the larger of the value of B and the value of C.

In a third possible design, there is a first sequence group set in the X sequence groups, and the first sequence group set is composed of 30 sequence groups in the X sequence groups. When the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M. When the first sequence group does not belong to the first sequence group set and M belongs to the first integer set, N is the smallest prime number greater than or equal to X. Similar to the third possible design, the first sequence group belongs to the first sequence group set, and N is the largest prime number less than or equal to M, or the first sequence group does not belong to the first sequence group set and M belongs to the first set of integers, and N is the smallest prime number greater than or equal to X.

In the fourth possible design, there is a first sequence group set in the X sequence groups, and the first sequence group set is composed of 30 sequence groups in the X sequence groups. When the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M. When the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M). Similar to the fourth possible design, the first sequence group belongs to the first sequence group set, and N is the largest prime number less than or equal to M. Or the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

This application aims to increase the number of sequence groups to expand the sequence capacity. The purpose of expanding the sequence capacity can be achieved through any one of the four possible designs mentioned above. To put it simply, the existing 30 base sequences are increased to X base sequences, and X is an integer greater than 30. The X sequence groups provided in the embodiments of this application can be used to construct more reference signal sequences to satisfy The demand for the number of reference signal sequences. It should be noted that the reference signal sequence is, for example, an SRS sequence, a DMRS sequence, a PRACH sequence, etc., which are not specifically limited.

The embodiments of the present application provide X sequence groups, each of the X sequence groups includes at least one base sequence of length M, that is, there are at least X sequence groups of length M in total in the X sequence groups. The number of base sequences of length M included in different sequence groups may be the same or different, which is not limited in the embodiments of the present application. Each sequence group can include multiple base sequences of different lengths. For example, taking the first sequence group as an example, the first sequence group includes N1 base sequences with a length of M1 and N2 base sequences with a length of M2. M1 is not equal to M2, and both N1 and N2 are greater than or equal to 1. Integer. It should be noted that the embodiment of this application can store these X sequence groups. For example, the network equipment, terminal equipment, memory, storage unit or chip and other devices involved in the embodiment of this application, or other entities with storage functions, can store These X sequence groups.

It should be understood that the network equipment, terminal equipment, memory, storage unit or chip and other devices involved in the embodiments of the present application, or other entities with storage functions may also generate one of the X sequence groups, or the embodiments of the present application When a new sequence needs to be used or the next communication is required, another sequence group in the X sequence groups can be generated, or a base sequence in one sequence group in the X sequence groups can be generated, or the embodiment of the present application When a new sequence needs to be used or the next communication is required, another base sequence of one sequence group among the X sequence groups can be generated. In the embodiment of the present application, each time a base sequence in a sequence group of X sequence groups is generated, the method of determining N according to the value of M belonging to the first set of integers is different from the way according to which the value of M does not belong to the first integer. There are different ways to determine N by the set. For details, see the four possible designs mentioned above.

The four possible designs mentioned above are described in detail below.

In the first possible design, the value range of the length M of the first base sequence includes at least two elements in the first integer set, that is, there are at least two possible values of M in the first integer set . When M belongs to the first set of integers, N is the smallest prime number greater than or equal to X. That is, for the first base sequence of length M, if M belongs to the first integer set, then the length N of the first ZC sequence generating the first base sequence is the smallest prime number greater than or equal to X. It should be understood that the intersection of the value range of M and the first integer set includes at least two elements in the first integer set, for example, the value range of M includes at least M1 and M2, and the first integer set includes at least M1 and M2. When two different values of M, for example, M1≠M2, and M1 and M2 belong to the first integer set, the value of N corresponding to M1 is the same as the value of N corresponding to M2.

It should be noted that the association relationship between M and N may be the same M and the corresponding N, or different M corresponding to the same N, or different M corresponding to different N. Exemplarily, when the value of M is M1, the value corresponding to N is N1, when the value of M is M2, the value corresponding to N is N2, where M1=M2, N1=N2; or M1≠M2 , And M1 and M2 belong to the first integer set, then N1=N2; or M1 and M2 do not belong to the first integer set, M1≠M2, then N1≠N2.

Exemplarily, multiple base sequences may be allocated to one or more cells, for the terminal equipment of the cell to generate a reference signal sequence. For example, taking the terminal device 1 included in a certain cell as an example, at the first moment, the terminal device 1 uses, for example, the base sequence 1 of the multiple base sequences to generate a reference signal sequence, and at the second moment, the terminal device 1 uses the multiple base sequences. For example, base sequence 2 in each base sequence generates a reference signal sequence. The length of the base sequence 1 is M1, the length of the ZC sequence generating the base sequence 1 is N1, the length of the base sequence 2 is M2, and the length of the ZC sequence generating the base sequence 1 is N2. Suppose M1=M2, then N1=N2; suppose M1≠M2, and M1 and M2 belong to the first integer set, then N1=N2; suppose M1 and M2 do not belong to the first integer set, M1≠M2, then N1≠N2.

For another example, taking terminal device 1 and terminal device 2 as an example, terminal device 1 and terminal device 2 are located in different cells, terminal device 1 uses base sequence 1 to generate a reference signal sequence, and terminal device 2 uses base sequence 2 to generate a reference signal sequence. The length of the base sequence 1 is M1, the length of the ZC sequence generating the base sequence 1 is N1, the length of the base sequence 2 is M2, and the length of the ZC sequence generating the base sequence 1 is N2. Assuming M1=M2, then N1=N2; assuming M1≠M2, then N1=N2 or N1≠N2.

Exemplarily, a correspondence between the possible values of the length M of the first base sequence and the possible values of the length N of the first ZC sequence may be as shown in Table 3, where X=60. A possible correspondence between the possible values of M and the possible values of N.

table 3

MM	NN
1212	6161
24twenty four	6161
3636	6161
4848	6161
6060	6161

It should be understood that, when the storage space of the terminal device or the network side device allows, the corresponding relationship shown in Table 3 may also be used.

Optionally, when M does not belong to the first integer set, the length N of the first ZC sequence for generating the first base sequence is at least one of the following possibilities:

(1) N is the largest prime number less than or equal to M;

(2) N is the largest prime number less than or equal to 2M;

(3) N is the smallest prime number greater than or equal to M;

(4) N is the smallest prime number greater than or equal to 2M.

With the first possible design, when the length of the first base sequence is shorter, that is, for a smaller value of M, the value of N becomes larger, so that the first ZC sequence with a length of N can be Generate more base sequences, and then achieve the expansion goal of increasing the number of sequence groups and at least one base sequence of length M in each sequence group.

Exemplarily, if X is 60, then the first set of integers is a set of integers greater than or equal to 30 and less than or equal to 60. The possible values of the length M of the first base sequence are, for example, 36, 48, 72, and 192, then 36 and 48 in the value set of M belong to the first integer set. When M is equal to 36 or 48, N is the smallest prime number greater than or equal to 60, that is, N=61. A ZC sequence with a length of 61 has 60 different roots, that is, 60 base sequences with a length of M can be generated, and it can be guaranteed that each sequence group in the 60 sequence groups has at least one base sequence with a length of M, that is, the realization sequence Expansion, optional, the value of X can also take other values.

In the second possible design, the length N of the first ZC sequence is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

That is, when 2M is an integer less than or equal to X, the length N of the first ZC sequence is the smallest prime number greater than or equal to X; when 2M is an integer greater than X, the length of the first ZC sequence N is the smallest prime number greater than or equal to 2M.

Using the second possible design, when the length of the first base sequence is shorter, that is, for a smaller value of M, that is, when 2M is less than or equal to X, the length of the first ZC sequence is N The value of becomes larger, so that more base sequences can be generated based on the first ZC sequence of length N, and then the expansion goal of increasing the number of sequence groups and having at least one base sequence of length M in each sequence group . For example, X is 60, M=36, and N is the smallest prime number greater than or equal to 72, that is, N=73. It can be seen that, compared with the current M=36 and N=31, N in the embodiment of the present application becomes larger, so that more base sequences can be constructed. A ZC sequence with a length of 73 has 72 different roots, that is, at least 60 base sequences with a length of M can be generated, and it can be ensured that each sequence group in the 60 sequence groups has at least one base sequence with a length of M. Sequence expansion.

In a third possible design, the embodiment of the present application defines a first sequence group set, and the first sequence group set is a set composed of 30 sequence groups among the X sequence groups. When the first sequence group belongs to the first sequence group set, the length N of the first ZC sequence is the largest prime number less than or equal to M. When the first sequence group does not belong to the first sequence group set and M belongs to the first integer set, N of the first ZC sequence is the smallest prime number greater than or equal to X.

Exemplarily, when the first sequence group does not belong to the first sequence group set, the corresponding relationship between the possible values of the length M of the first base sequence and the possible values of the length N of the first ZC sequence may be as shown in Table 4. As shown, Table 4 shows a possible correspondence between the possible values of M and the possible values of N when X=60.

Table 4

MM	NN
1212	6161
24twenty four	6161
3636	6161
4848	6161
6060	6161

It should be understood that, if the storage space of the terminal device or the network side device allows, the corresponding relationship shown in Table 4 may also be used.

Optionally, when the first sequence group does not belong to the first sequence group set and M does not belong to the first integer set, the length N of the first ZC sequence that generates the first base sequence is the following possibilities At least one of:

(1) N is the largest prime number less than or equal to M;

(2) N is the largest prime number less than or equal to 2M;

(3) N is the smallest prime number greater than or equal to M;

(4) N is the smallest prime number greater than or equal to 2M.

Exemplarily, when M=36 and X=60, there are 30 sequence groups in the 60 sequence groups, and the length of each sequence group in the 30 sequence groups is at least one base sequence in the 36 base sequence It is generated from a ZC sequence with a length of 31, and at least one of the base sequences with a length of 36 in each of the other 30 sequence groups is generated from a ZC sequence with a length of 61. With the third possible design, the purpose of expanding the sequence group can be achieved.

In the fourth possible design, the embodiment of the present application defines a first sequence group set, and the first sequence group set is a set composed of 30 sequence groups among the X sequence groups. When the first sequence group belongs to the first sequence group set, the length N of the first ZC sequence is the largest prime number less than or equal to M.

When the first sequence group does not belong to the first sequence group set, the root N of the first ZC sequence is the smallest prime number greater than or equal to S, and the S=max(X, 2M). That is, when 2M is an integer less than or equal to X, the length N of the first ZC sequence is the smallest prime number greater than or equal to X; when 2M is an integer greater than X, the length of the first ZC sequence N is the smallest prime number greater than or equal to 2M.

Exemplarily, when M=36 and X=60, there are 30 sequence groups in the 60 sequence groups, and the length of each sequence group in the 30 sequence groups is at least one base sequence in the 36 base sequence It is generated from a ZC sequence of length 31. At least one of the base sequences of length 36 in each of the other 30 sequence groups is generated from the ZC sequence with the smallest prime number greater than or equal to S, S=max(X, 2M)=max (60,72)=72, that is to say, at least one of the base sequences of length 36 in each of the other 30 sequence groups is generated by the ZC sequence of length 73. With the fourth possible design, the purpose of expanding the sequence group can be achieved.

In the embodiment of the present application, there are X sequence groups in the system, and the network device can determine a sequence group from the X sequence groups, that is, the first sequence group, and allocate the first sequence group to the terminal device. That is, a set of base sequences allocated to the terminal device, the set of base sequences includes the base sequence allocated to the terminal device for determining the reference signal sequence, that is, the first base sequence.

In some embodiments, the network device may allocate the base sequence of the first sequence group to the terminal device through configuration information, and the configuration information may be specific signaling (such as dedicated radio resource control (RRC) signaling). When the above-mentioned first sequence group corresponds to a cell, the first sequence group can also be used by network equipment through cell-level signaling (such as cell-specific RRC signaling, system information block (system information block, SIB) signaling, and master information). The master information block (MIB) signaling, etc.) uniformly allocates the base sequence of the first sequence group to multiple terminal devices in the cell served by the network device. The configuration can directly indicate the sequence or the sequence index, or configure some or all of the parameters of the sequence, so that the receiving end can generate the sequence. Alternatively, the network device may also allocate the first sequence group to the terminal device in other possible manners, which is not limited in this embodiment of the present application, and other possible manners are not described herein again.

The terminal device can determine the base sequence under each reference signal sequence length according to the allocated first sequence group. Optionally, the terminal device determines the first base sequence according to the length M of the reference signal sequence. Optionally, the terminal device may determine the first base sequence through other configuration information.

It should be noted that, in this embodiment, the first sequence group allocated to the terminal device does not necessarily require the terminal device to store all the base sequences of the first sequence group according to the result of the allocation, but the terminal device The reference signal sequence to be sent can be generated according to the first base sequence in the base sequence in the first sequence group when needed according to a predefined rule and/or other signaling configuration.

It should be understood that among the X sequence groups, base sequences in different sequence groups can be allocated to terminal equipment in the same cell. For example, the base sequence in the second sequence group is used for some terminal equipment in cell 1 to determine reference signals. , The base sequence in the third sequence group is used for another part of the terminal equipment in cell 1 to determine the reference signal; or the base sequence in the same sequence group can be allocated to terminal equipment in different cells; or, the base sequence in the same sequence group The base sequence can only be allocated to terminal equipment in the same cell. This embodiment does not limit this.

S202: The terminal device determines a reference signal sequence with a length of M.

S203: The terminal device sends a reference signal sequence of length M, and the network device receives the reference signal sequence.

In the embodiment of the present application, the first sequence group allocated by the network device to the terminal device is determined from the X sequence groups according to the first group index u. Each sequence group in the X sequence groups corresponds to a group index, and the value of the group index is different for different sequence groups, so that different sequence groups can be distinguished. Exemplarily, the first group index u may be determined according to the sequence ID (sequenceID) of the first base sequence, for example

among them,

Is the sequence identifier of the first base sequence, and Y is a positive integer, for example, Y=X. For example, the group index of X sequence groups is {0,1,...,X-1}, and the first group index u belongs to {0,1,...,X-1}.

If the network device allocates the first sequence group to the terminal device, the network device can inform the terminal device of the first group index u. Exemplarily, the network device may send first indication information to the terminal device, where the first indication information is used to indicate the first group index u. Alternatively, it may also be considered that the configuration information sent by the network device to the terminal device includes the first indication information. The terminal device receives the first indication information, and according to the first indication information, determines that it is the first sequence group allocated to itself, thereby determining the base sequence allocated to itself. In some embodiments, the first correspondence may be predefined, and the first correspondence may indicate the correspondence between the group index and the sequence group, so that the terminal device may determine the allocated sequence according to the first indication information and the first correspondence. group. Alternatively, the first correspondence relationship may indicate the correspondence relationship between the group index and the multiple base sequences, so that the terminal device may determine the multiple base sequences to be allocated according to the first indication information and the first correspondence relationship. Alternatively, the first correspondence relationship may indicate the group index and the corresponding relationship between the length of the multiple ZC sequences and the root index, so that the terminal device may determine multiple ZC sequences according to the first indication information and the first correspondence relationship, and then may be based The multiple ZC sequences determine multiple base sequences. In some embodiments, the first correspondence relationship may be implemented in the form of a table.

It should be noted that the first indication information may be displayed configuration, for example, the first indication information indicates the group index of the first sequence group; or, the first indication information may also be implicitly obtained through the configuration of other information. The embodiment of the application does not limit this.

In the embodiment of the present application, the terminal device may determine the reference signal sequence according to the first base sequence belonging to the first sequence group. It should be understood that the terminal device determining the reference signal sequence may be the terminal device generating the reference signal sequence according to the first base sequence and a predefined rule, or the reference signal sequence may be obtained according to the first base sequence and the second correspondence, so The second relationship can be considered as the corresponding relationship between the reference signal sequence and the first base sequence. The embodiment of the application does not limit this. In the same way, the above-mentioned first base sequence is determined by a first ZC sequence with a length of N. It can be understood that the first base sequence may be generated from the first ZC sequence, or the first base sequence may be based on The first ZC sequence and the third corresponding relationship are obtained. The embodiment of the application does not limit this.

In a possible design, the first base sequence is generated from the first ZC sequence, and the reference signal sequence is generated from the first base sequence. Alternatively, the first base sequence is obtained according to the first ZC sequence and the third correspondence, and the reference signal sequence is generated from the first base sequence.

Exemplarily, the first base sequence satisfies formula (1):

r(m)=z _q (m mod N), m=0,1,...,M-1 (1)

Wherein, z _q (n), n=0,1,..., N-1 is the first ZC sequence, N is the length of the first ZC sequence, and q is the root of the first ZC sequence . The terminal device may determine the reference signal sequence of length M according to the first base sequence, and the reference signal sequence x(m) of length M satisfies:

x(m)=A exp(jαm)r(m) (2)

In formula (2), A is a complex number, j is an imaginary unit, exp represents an exponential function with e as the base, α is a real number determined according to the cyclic shift value, and the cyclic shift value can be the configuration of the terminal device according to the network device Information is determined, or determined according to predefined rules.

It should be noted that, in this embodiment, the terminal device is not required to store X sequence groups, but it is said that the terminal device can be configured according to predefined rules and/or other signaling, and can be based on the X sequence groups when needed. The first sequence in the group The first base sequence in the group generates the reference signal sequence to be transmitted. Of course, if the storage space of the terminal device or the network side device allows, X sequence groups can also be stored.

In different possible designs, the root of the first ZC sequence used to generate the first base sequence may have different characteristics, which will be introduced separately below.

In a possible implementation, the root q of the first ZC sequence satisfies formula (3):

Among them, in formula (3),

Indicates rounding down, the same applies to the following.

Among them, Z is a positive integer, u'is an integer determined according to the first set of index u, u'∈{0,1,...,30C-1}, C is greater than or equal to

The smallest integer. B is a predefined value or an integer determined according to the sequence number of the reference signal sequence. For example, B can be

Among them, v is the serial number of the reference signal sequence.

Optionally, when B is an integer determined according to the sequence number v of the reference signal, v may be notified by the network device to the terminal device through the second indication information, for example, the configuration information sent by the network device to the terminal device may include the second indication information . With reference to the foregoing introduction, the terminal device may determine the first sequence group according to the first indication information, and the terminal device may determine the first base sequence according to the second indication information to generate the reference signal sequence. It should be noted that the first instruction information and the second instruction information may be sent through the same instruction, or may be sent through different instructions, which is not limited in the embodiment of the present application.

If the first base sequence adopts the above-mentioned first possible design or the above-mentioned second possible design, optionally, Z is a positive integer, exemplarily, Z is the smallest prime number greater than or equal to X, or Z is greater than Or the smallest prime number equal to 30C. For example, X=60, Z=61, the corresponding relationship between u'and the first group index u is u'=u, B is a predefined integer 0, and the root of the first ZC sequence satisfies:

In the X sequence groups obtained by this design, each sequence group has at least one base sequence of length M, that is to say, there are at least X sequence groups of length M in total in the X sequence groups Base sequence, and the interference between the reference signal sequences generated from any two base sequences of the X base sequences of length M is relatively low. Therefore, the network device can allocate one or a smaller number of sequence groups to cells with fewer terminal devices, and can allocate more sequence groups to cells with more terminal devices, so as to shorten the reference signal sequence transmission cycle as much as possible. At the same time, since the interference between the reference signal sequences generated by the X base sequences is relatively low, no matter what sequence group allocation method the network device uses, it can ensure that the interference between the reference signal sequences in the cell is low. And to ensure that the interference between the reference signal sequences between the cells is also low.

Exemplarily, take X=60 and M=36 as an example:

In the first possible design, N=61, then according to different values of the first group index u, the root of the first ZC sequence is shown in Table 5:

table 5

第一组索引First set of indexes	00	11	22	33	44	55	66	77	88	99	1010	1111	1212	1313	1414
第一ZC序列的根Root of the first ZC sequence	11	22	33	44	55	66	77	88	99	1010	1111	1212	1313	1414	1515
第一组索引First set of indexes	1515	1616	1717	1818	1919	2020	21twenty one	22twenty two	23twenty three	24twenty four	2525	2626	2727	2828	2929
ZC序列根指标ZC sequence root index	1616	1717	1818	1919	2020	21twenty one	22twenty two	23twenty three	24twenty four	2525	2626	2727	2828	2929	3030
第一组索引First set of indexes	3030	3131	3232	3333	3434	3535	3636	3737	3838	3939	4040	4141	4242	4343	4444
第一ZC序列的根Root of the first ZC sequence	3131	3232	3333	3434	3535	3636	3737	3838	3939	4040	4141	4242	4343	4444	4545
第一组索引First set of indexes	4545	4646	4747	4848	4949	5050	5151	5252	5353	5454	5555	5656	5757	5858	5959
第一ZC序列的根Root of the first ZC sequence	4646	4747	4848	4949	5050	5151	5252	5353	5454	5555	5656	5757	5858	5959	6060

As shown in Table 5, X=60, there are 60 sequence groups and the corresponding roots of 60 first ZC sequences. Any two of the 60 base sequences of length M obtained from the above 60 first ZC sequences The cross-correlation value between the reference signal sequences generated by the sequence is small.

In the second possible design, N=73, then according to different values of the first group index u, the root of the first ZC sequence is shown in Table 6:

Table 6

第一组索引First set of indexes	00	11	22	33	44	55	66	77	88	99	1010	1111	1212	1313	1414
第一ZC序列的根Root of the first ZC sequence	11	22	44	55	66	77	88	1010	1111	1212	1313	1414	1616	1717	1818
第一组索引First set of indexes	1515	1616	1717	1818	1919	2020	21twenty one	22twenty two	23twenty three	24twenty four	2525	2626	2727	2828	2929
ZC序列根指标ZC sequence root index	1919	2020	22twenty two	23twenty three	24twenty four	2525	2626	2828	2929	3030	3131	3232	3434	3535	3636
第一组索引First set of indexes	3030	3131	3232	3333	3434	3535	3636	3737	3838	3939	4040	4141	4242	4343	4444
第一ZC序列的根Root of the first ZC sequence	3737	3838	3939	4141	4242	4343	4444	4545	4747	4848	4949	5050	5151	5353	5454
第一组索引First set of indexes	4545	4646	4747	4848	4949	5050	5151	5252	5353	5454	5555	5656	5757	5858	5959
第一ZC序列的根Root of the first ZC sequence	5555	5656	5757	5959	6060	6161	6262	6363	6565	6666	6767	6868	6969	7171	7272

As shown in Table 6, X=60, there are 60 sequence groups and the corresponding roots of 60 first ZC sequences. Any two of the 60 base sequences of length M obtained from the above 60 first ZC sequences The cross-correlation value between the reference signal sequences generated by the sequence is small.

If the first base sequence adopts the above-mentioned third possible design or the above-mentioned fourth possible design, the value of Z is different according to the relationship between the first sequence group and the first sequence group set, and the value of Z is also different :

Optionally, when the first sequence group belongs to the first sequence group set, Z is 31;

Optionally, when the first sequence group does not belong to the first sequence group set, Z is the smallest prime number greater than or equal to X, or Z is the smallest prime number greater than or equal to 30C.

In the X sequence groups obtained by this design, it can also be ensured that each sequence group has at least one base sequence of length M, that is, there are at least X lengths in total in the X sequence groups. Is a base sequence of M, and the cross-correlation value between the reference signal sequences generated by any two base sequences of the X base sequences of length M is relatively small, so the X base sequences of length M have a relatively small cross-correlation value. The interference between the reference signal sequences generated by any two base sequences in the sequence is very low. Therefore, the network device can allocate one or a smaller number of sequence groups to cells with fewer terminal devices, and can allocate more sequence groups to cells with more terminal devices, so as to shorten the reference signal sequence transmission cycle as much as possible. At the same time, since the interference between the reference signal sequences generated by the X base sequences is relatively low, no matter what sequence group allocation method the network device uses, it can ensure that the interference between the reference signal sequences in the cell is low. And to ensure that the interference between the reference signal sequences between the cells is also low.

Optionally, the first sequence group set is composed of sequence groups whose group indexes are 0-29. When the first sequence group belongs to the first sequence group set, that is, when u∈{0,1,...,29}, the corresponding relationship between u'and u is u'=u. When the first sequence group does not belong to the first sequence group set, that is, when u ∈ {30,31,...,X-1}, the corresponding relationship between u'and u is u'=g( u), g(u)∈{0,1,2,...,30C-1}-{0,C,2·C,...,29·C}. For example, in some possible implementations,

Exemplarily, for example, X=60, M=36, when u∈{0,1,...,29}, N=31, Z=31, u'=u, that is

When u ∈ {30,31,...,X-1}, Z=61, in the third possible design, N=61, then

In the fourth possible design, N=73, then

The corresponding relationship between u'and u is u'=g(u), g(u)∈{0,1,2,...,30C-1}-{0,C,2·C,..., 29·C}, for example, in some possible implementations,

With this design, when the existing base sequence is retained in the system, it can be ensured that the cross-correlation value between the reference signal sequences generated by any two base sequences belonging to any two different sequence groups is small, that is, the cross-correlation value between any two base sequences belonging to any two different sequence groups is small. The interference between reference signals generated by any two base sequences of two different sequence groups is low. For example, it can be ensured that the interference before the reference signal sequence generated by the base sequence of length M1 in the first sequence group and the reference signal sequence generated by the base sequence of length M2 in the second sequence group is low, where M1 and M2 can be equal or not. not equal. In this way, when the network equipment assigns any two sequence groups to the terminal equipment in the same cell, it can ensure that the interference between the reference signal sequences in the cell is low; when the network equipment assigns the any two sequence groups to the terminal equipment in the same cell, When the sequence group is allocated to terminal equipment in different cells, it can ensure that the interference between the reference signal sequences between the cells is low.

Optionally, in the first possible design or the second possible design, the first sequence group includes a base sequence with _{a length of M 1} determined by a ZC sequence with a _{root of q 1} and a length of N _{1 and} _{The base sequence of length M 2} is determined by the ZC sequence with root q ₂ and length N ₂ , and root q ₁ and root q ₂ satisfy the following formula:

With this scheme, when the existing base sequence is not retained in the system, it can be ensured that the cross-correlation value between the reference signal sequences generated by any two base sequences belonging to any two different sequence groups is small, that is, they belong to any two groups. The interference between reference signals generated by any two base sequences of different sequence groups is low. For example, it can be ensured that the interference before the reference signal sequence generated by the base sequence of length M1 in the first sequence group and the reference signal sequence generated by the base sequence of length M2 in the second sequence group is low, where M1 and M2 can be equal or not. not equal. In this way, when the network equipment assigns any two sequence groups to the terminal equipment in the same cell, it can ensure that the interference between the reference signal sequences in the cell is low; when the network equipment assigns the any two sequence groups to the terminal equipment in the same cell, When the sequence group is allocated to terminal equipment in different cells, it can ensure that the interference between the reference signal sequences between the cells is low.

Optionally, in the first possible design or the second possible design, when u ∈ {30,31,...,X-1}, the corresponding relationship between u'and u is u'=g (u),g(u)∈{0,1,...,30C-1}-{0,C,2·C,...,29·C}, as an example of g(u) ,

When u∈{0,1,...,29}, u'=C·u, C is greater than or equal to

And the first sequence group includes a base sequence _{of length M 1} determined by a ZC sequence with a _{root of q 1} and length N ₁ _{and a base sequence of length M 1 determined by a ZC sequence with root of q 2} and length N ₂ The base sequence of length M _{2 and} _{the base sequence of length M 3} determined by the ZC sequence of _{root q 3} and length N ₃ , and root q ₁ , root q ₂ and root q ₃ satisfy the following formulas:

With this scheme, when the existing base sequence is retained in the system, it can be ensured that the cross-correlation value between the reference signal sequences generated by any two base sequences belonging to any two different sequence groups is small, that is, they belong to any two groups. The interference between reference signals generated by any two base sequences of different sequence groups is low. For example, it can be ensured that the interference before the reference signal sequence generated by the base sequence of length M1 in the first sequence group and the reference signal sequence generated by the base sequence of length M2 in the second sequence group is low, where M1 and M2 can be equal or not. not equal. In this way, when the network equipment assigns any two sequence groups to the terminal equipment in the same cell, it can ensure that the interference between the reference signal sequences in the cell is low; when the network equipment assigns the any two sequence groups to the terminal equipment in the same cell, When the sequence group is allocated to terminal equipment in different cells, it can ensure that the interference between the reference signal sequences between the cells is low.

In another possible implementation manner, the root q of the first ZC sequence satisfies formula (4):

q=(e+B)mod N (4)

Among them, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.

In a possible implementation manner in which the network device configures B for the terminal device, the network device may configure the serial number of the reference signal sequence for the terminal device to instruct the terminal device to determine B according to the serial number of the reference signal sequence. Exemplarily, in the embodiment of the present application, B=f(v) may be defined, and v is the serial number of the reference signal sequence. The network device can inform the terminal device of the v configured for it through the second indication information, so that the terminal device can determine v according to the second indication information, and determine the root q of B and the first ZC sequence. Exemplarily, f(v) can be: v or -v or v·(-1) ^2·e or -v·(-1) ^2·e

e is an integer determined according to the first group index u of the first sequence group and the length N of the first ZC sequence. In the embodiment of this application, considering that the current group index u has been defined, and the embodiment of this application newly adds a sequence group, in order to achieve compatibility with the existing group index u, the embodiment of this application may define a corresponding relationship with u U', u'are integers greater than or equal to 0 and less than or equal to X-1, then e can be considered as a value determined according to the length N and u'of the first ZC sequence.

Exemplarily, when X=60, the correspondence relationship between e and N and u′ satisfies at least one correspondence relationship in Table 7.

Table 7

It should be noted that q may be determined in other possible ways, which is not limited in the embodiment of the present application, as long as e and q satisfy formula (4) and Table 7.

It should be noted that the embodiment of this application can store these X sequence groups. For example, the network equipment, terminal equipment, memory, storage unit or chip and other devices involved in the embodiment of this application, or other entities with storage functions, can store The corresponding relationship between e and N and u'is shown in Table 7.

The above design can satisfy the X sequence groups designed above, each sequence group has at least one base sequence of length M, that is to say, there are at least X length of M sequence in the X sequence groups. Base sequence, and the cross-correlation value between the reference signal sequences generated by any two of the X base sequences of length M is small, so any of the X base sequences of length M The interference between the reference signal sequences generated by the two base sequences is relatively low. Therefore, the network device can allocate one or a smaller number of sequence groups to cells with fewer terminal devices, and can allocate more sequence groups to cells with more terminal devices, so as to shorten the reference signal sequence transmission cycle as much as possible. At the same time, since the interference between the reference signal sequences generated by the X base sequences is relatively low, no matter what sequence group allocation method the network device uses, it can ensure that the interference between the reference signal sequences in the cell is low. And to ensure that the interference between the reference signal sequences between the cells is also low.

Since the embodiment of the present application expands the sequence groups in the system from 30 to X, X is an integer greater than 30. Wherein, each of the X sequence groups includes at least one base sequence of length M. Based on the five possible designs provided above, it is possible to provide more base sequences and achieve the purpose of expanding sequences. In this way, the number of reference signal sequences available in a cell, for example, the number of SRS sequences can meet the number of more terminal devices, so that different terminal devices in the cell do not need to send SRS sequences in turn, and will not cause transmission. The period of the SRS is longer, so that the channel state information obtained by the network device according to the received SRS has a small difference from the actual channel state information, that is, the accuracy of the channel state information determined by the network device is improved.

In addition, the present application can ensure the interference power between the reference signals in the cell by using the above method, and can also ensure that the interference power between the reference signals between the cells is very small.

In the above-mentioned embodiments provided in the present application, the methods provided in the embodiments of the present application are respectively introduced from the perspective of interaction between a terminal device and a network device. In order to realize each function in the method provided in the above embodiments of the application, the terminal device and the network device may include a hardware structure and/or a software module, and the above functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether a certain function of the above-mentioned functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.

The communication device used to implement the foregoing method in the embodiments of the present application will be described below with reference to the accompanying drawings. Therefore, the above content can all be used in the subsequent embodiments, and the repeated content will not be repeated.

FIG. 3 is a schematic block diagram of a communication device 300 according to an embodiment of the present application. The communication device 300 can execute the behaviors and functions of the terminal equipment in the foregoing method embodiments, and in order to avoid repetition, details are not described herein again. The communication device 300 may be a terminal device or a chip applied to the terminal device. The communication device 300 includes: a processing unit 310 and a transceiving unit 320,

In a possible design, the processing unit 310 is configured to determine a reference signal sequence, the length of the reference signal sequence is M, and M is an integer greater than 1, and the transceiver unit 320 is configured to send the reference signal sequence;

[Corrected according to Rule 91 09.04.2020]
Wherein, the reference signal sequence is determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, and the first sequence group is selected from X sequence groups according to a first group index u X is an integer greater than 30 in the u∈{0,1,...X-1}, and the base sequence of length M in the first sequence group is composed of ZC of length N The sequence is determined; among them,

The value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to the first set of integers, When an integer is set, the N is the smallest prime number greater than or equal to X;

or,

N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

Wherein, the processing unit 310 may be specifically used to determine:

Exemplarily, the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,

Optionally, the Z is the smallest prime number greater than or equal to X; or, the Z is the smallest prime number greater than or equal to 30C.

Exemplary, the first sequence comprises a set of Q ₁ and a length of a root ZC sequence is N ₁ determined base sequence of length M ₁ and q ₂ from the root of N ₂ and a length of the ZC sequence length determined Is the base sequence of M ₂ and the root q ₁ and root q ₂ satisfy the following formula:

Optional, u∈{30,31,...,X-1}, u'=g(u), g(u)∈{0,1,2,...,30C-1}-{ 0,C,2·C,...,29·C};

or,

Exemplarily, u∈{0,1,...,29}, u'=C·u, the first sequence group includes a length M determined by a ZC sequence with a _{root of q 1} and a length of N ₁ A base sequence of _1, _{a base sequence of length M 2} determined by a ZC sequence with a _{root of q 2} and length N ₂ and a base sequence _{of M 3} determined by a ZC sequence with _{root of q 3} and length N ₃ , And root q ₁ , root q ₂ and root q ₃ satisfy the following formula:

Optionally, the g(u) satisfies the following formula:

q=(e+B)mod N;

Wherein, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence, and e is determined according to the group index u of the first sequence group and the length N of the first ZC sequence Integer.

Among them, all relevant content of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

In another possible design, the processing unit 310 is configured to determine a reference signal sequence, the length of the reference signal sequence is M, and M is an integer greater than 1, and the transceiver unit 320 is configured to send the reference signal sequence;

Or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

Wherein, the processing unit 310 is specifically configured to determine:

among them,

Optionally, when the first sequence group belongs to a first sequence group set, the Z is 31;

Exemplarily, the first sequence group set is composed of sequence groups whose group index is 0-29, where:

u∈{0,1,...,29}, u'=u; or,

u∈{30,31,...,X-1}, u'∈{0,1,...,30C-1}-{0,C,2C,...,29C}.

Optionally, when u∈{30,31,...,X-1},

FIG. 4 is a schematic block diagram of a communication device 400 according to an embodiment of the present application. The communication device 400 can execute the behavior function of the network device in the foregoing method embodiment, and in order to avoid repetition, it will not be described in detail here. The communication device 400 may be a network device or a chip applied to the network device. The communication device 400 includes: a processing unit 410 and a transceiver unit 420,

In a possible design, the transceiver unit 420 is configured to send configuration information based on the control of the processing unit 410. The configuration information is used to configure a first base sequence and receive a reference signal sequence. The reference signal sequence is composed of a length of The first base sequence of M is determined;

Wherein, the value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to In the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).

Wherein, the processing unit 410 is specifically configured to determine:

among them,

Z is a positive integer, u'is an integer determined according to the group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to

The root q satisfies the following formula:

q=(e+B)mod N;

In another possible design, the transceiver unit 420 is configured to send configuration information based on the control of the processing unit 410. The configuration information is used to configure the first base sequence and receive the reference signal sequence. The reference signal sequence is determined by the length Determined for the first base sequence of M;

Wherein, the processing unit 410 is specifically configured to determine:

among them,

u∈{0,1,...,29}, u'=u; or,

u∈{30,31,...,X-1}, u'∈{0,1,...,30C-1}-{0,C,2C,...,29C}.

Optionally, when u∈{30,31,...,X-1},

FIG. 5 is a schematic block diagram of a communication device 500 according to an embodiment of the present application. The communication device 500 can execute each step executed by the terminal device in the foregoing method embodiment, and may also be used to execute each step executed by the network device in the foregoing method embodiment. In order to avoid repetition, it will not be described in detail here. The communication device 500 may be a terminal device or a chip used in a terminal device. The communication device 500 may also be a network device or a chip used in a network device. The communication device 500 includes:

The memory 510 is used to store programs;

The communication interface 520 is used to communicate with other devices;

The processor 530 is configured to execute a program in the memory 510. When the program is executed, the processor 530 is configured to determine a reference signal sequence, and receive the reference signal sequence through the communication interface 520, where the reference The signal sequence length is M, M is an integer greater than 1, the reference signal sequence is determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, and the first sequence group is Determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X-1}, the X is an integer greater than 30, in the first sequence group The base sequence of length M is determined by the ZC sequence of length N; wherein, the value range of M includes at least two elements in the first integer set, and the first integer set is greater than or equal to X/2 A set of integers less than or equal to X, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S =max(X, 2M).

Alternatively, the processor 530 is configured to determine a reference signal sequence, and receive a reference signal sequence through the communication interface 520, where the reference signal sequence length is M, M is an integer greater than 1, and the reference signal sequence is Determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u ∈{0,1,...,X-1}, the X is an integer greater than 30, and the base sequence of length M in the first sequence group is determined by the ZC sequence of length N; There is a first sequence group set in the X sequence groups, and the first sequence group set includes 30 sequence groups among the X sequence groups;

Alternatively, the processor 530 is configured to send configuration information through the communication interface 520, where the configuration information is used to configure the first base sequence, and to receive a reference signal sequence through the communication interface 520, where the reference signal sequence has a length of M The first base sequence is determined; wherein, the first base sequence belongs to a first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u ∈{0,1,...,X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence of length M, and the at least one base sequence of length M The sequence is determined by the ZC sequence of length N;

Still alternatively, the processor 530 is configured to send configuration information through the communication interface 520, where the configuration information is used to configure the first base sequence, and receive a reference signal sequence through the communication interface 520, where the reference signal sequence has a length of M The first base sequence is determined; wherein, the first base sequence belongs to a first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u ∈{0,1,...,X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence of length M, and the at least one base sequence of length M The sequence is determined by a ZC sequence of length N; there is a first sequence group set in the X sequence groups, and the first sequence group set includes 30 sequence groups in the X sequence groups;

It should be understood that the communication device 500 shown in FIG. 5 may be a chip or a circuit. For example, a chip or circuit may be installed in a terminal device or a chip or circuit may be installed in a network device. The aforementioned communication interface 520 may also be a transceiver. The transceiver includes a receiver and a transmitter. Further, the communication device 500 may also include a bus system.

Among them, the processor 530, the memory 510, the receiver and the transmitter are connected by a bus system, and the processor 530 is used to execute the instructions stored in the memory 510 to control the receiver to receive signals and to control the transmitter to send signals to complete the communication of this application. The steps of the network device in the method. Among them, the receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers. The memory 510 may be integrated in the processor 530, or may be provided separately from the processor 530.

As an implementation manner, the functions of the receiver and transmitter may be implemented by a transceiver circuit or a dedicated transceiver chip. The processor 530 may be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.

The embodiment of the present application does not limit the specific connection medium between the aforementioned communication interface 520, the processor 530, and the memory 510. In the embodiment of the present application, in FIG. 5, the memory 510, the processor 530, and the communication interface 520 are connected by a bus. The bus is represented by a thick line in FIG. It is not limited. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only one thick line is used to represent in FIG. 5, but it does not mean that there is only one bus or one type of bus.

In the embodiment of the present application, the processor 530 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement Or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory 510 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory (volatile memory). For example, random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this. The memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function for storing program instructions and/or data.

It should be noted that the communication device in the foregoing embodiment may be a terminal device or a circuit, and may also be a chip applied to a terminal device or other combination devices or components having the functions of the foregoing terminal device. When the communication device is a terminal device, the transceiver unit may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module may be a processor, such as a central processing unit (CPU). When the communication device is a component with the above-mentioned terminal device function, the transceiver unit may be a radio frequency unit, and the processing module may be a processor. When the communication device is a chip system, the transceiver unit may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.

Fig. 6 shows a simplified schematic diagram of a possible design structure of the terminal device involved in the foregoing embodiment. The terminal equipment includes a transmitter 601, a receiver 602, a controller/processor 603, a memory 604, and a modem processor 605.

The transmitter 601 is used to transmit an uplink signal, and the uplink signal is transmitted to the network device described in the foregoing embodiment via an antenna. On the downlink, the antenna receives the downlink signal (DCI) transmitted by the network device in the above embodiment. The receiver 602 is used to receive a downlink signal (DCI) received from an antenna. In the modem processor 605, the encoder 606 receives service data and signaling messages to be sent on the uplink, and processes the service data and signaling messages. The modulator 607 further processes (for example, symbol mapping and modulation) the encoded service data and signaling messages and provides output samples. The demodulator 609 processes (e.g., demodulates) the input samples and provides symbol estimates. The decoder 608 processes (e.g., decodes) the symbol estimate and provides decoded data and signaling messages sent to the terminal device. The encoder 606, the modulator 607, the demodulator 609, and the decoder 608 can be implemented by a synthesized modem processor 605. These units are processed according to the wireless access technology adopted by the wireless access network.

The controller/processor 603 controls and manages the actions of the terminal device, and is used to execute the processing performed by the terminal device in the foregoing embodiment. For example, it is used to control the terminal device to receive the configuration information from the network device, determine the reference signal sequence according to the received configuration information, and send the reference signal sequence to the network device and/or other processes of the technology described in this application. As an example, the controller/processor 603 is used to support the terminal device to execute the process S202 in FIG. 2.

Fig. 7 shows a schematic structural diagram of a simplified communication device. It is easy to understand and easy to illustrate. In FIG. 7, the communication device uses a network device as an example. The network device may be applied to the system shown in FIG. 1, and may be the network device in FIG. 1, which performs the functions of the network device in the foregoing method embodiment. The network device 700 may include one or more radio frequency units, such as a remote radio unit (RRU) 710 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU). )720. The RRU 710 may be called a communication module, which corresponds to the transceiver unit 420 in FIG. 4. Optionally, the communication module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 711 And radio frequency unit 712. The RRU 710 part is mainly used for receiving and sending of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal equipment. The 720 part of the BBU is mainly used for baseband processing, control of the base station, and so on. The RRU 710 and the BBU 720 may be physically set together, or may be physically separated, that is, a distributed base station.

The BBU 720 is the control center of the base station, and may also be called a processing module, which may correspond to the processing unit 410 in FIG. 4, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing module) may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.

In an example, the BBU 720 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) of a single access standard, or can support different access standards. Wireless access network (such as LTE network, 5G network or other networks). The BBU 720 further includes a memory 721 and a processor 722. The memory 721 is used to store necessary instructions and data. The processor 722 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 721 and the processor 722 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

The embodiments of the present application also provide a communication system. Specifically, the communication system includes a terminal device and a network device, or may also include more terminal devices and network devices.

The terminal equipment and the network equipment are respectively used to implement the functions of the above-mentioned related equipment in FIG. 2. For details, please refer to the relevant descriptions in the above method embodiments, which will not be repeated here.

An embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method performed by the terminal device and the network device in FIG. 2.

The embodiments of the present application also provide a computer program product, including instructions, which when run on a computer, cause the computer to execute the method executed by the terminal device and the network device in FIG. 2.

The embodiment of the present application provides a chip system. The chip system includes a processor and may also include a memory for realizing the functions of the terminal device and the network device in the foregoing method. The chip system can be composed of chips, or it can include chips and other discrete devices.

As another embodiment of the present application, the memory, storage unit, terminal equipment, network equipment or chip and other devices involved in the present application, or other entities with storage functions, can store the X sequence groups, and can store these X sequence groups. Part of the sequence groups in a sequence group can also store all sequence groups in the X sequence groups: group 0, group 1, group 2, ... group X-1. The base sequence of length M in each sequence group is determined by the ZC sequence of length N, where N corresponds to different sequence groups are variables (can be represented by N ₀ , N ₁ …, or in other ways ). When the value u ₁ of X belongs to the first set of integers, and the value u _{2 of} X does not belong to the first set of integers, the method of determining the parameter N is different.

In an embodiment, the value of X may be a set of multiple integers or intervals. When the value of X is in a different interval, the method of determining the parameter N is different.

The specific difference may be in the form shown in the above-mentioned embodiment. For example, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M). This embodiment may be used alone as an embodiment, or may be combined with each of the foregoing embodiments. For example, a sequence in the sequence group in this embodiment can satisfy various possible ones of the foregoing embodiments. As another embodiment of the present invention, the processor, chip, terminal, base station, or processing unit involved in the present invention, or other entities with computing functions, can also generate one sequence group among X sequence groups; or Generate a sequence in a sequence group in the X sequence group. When you need to use new parameters or the next communication, generate another sequence group of X sequence groups, or generate another sequence of one sequence group in X sequence groups, when the value of X is generated during the first generation When u ₁ belongs to the first integer set, and the value of X in the second generation process u ₂ does not belong to the first integer set, the method of determining the above parameter N is different. The specific difference may be in the form shown in the foregoing embodiment, and will not be repeated here.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

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

In the several embodiments provided in this application, it should be understood that the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be Other division methods, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual communication connections may be indirect couplings or communication connections through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.

In addition, the units in the device embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

It is understandable that the processor in the embodiment of the present application may be a central processing unit (central processing unit, CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits. (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

The methods in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction may be transmitted from a website, computer, server, or The data center transmits to another website, computer, server, or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL for short) or wireless (for example, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, Hard disk, magnetic tape), optical medium (for example, digital video disc (digital video disc, DVD for short)), or semiconductor medium (for example, SSD), etc.

An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in the ASIC. In addition, the ASIC can be located in a network device or a terminal device. Of course, the processor and the storage medium may also exist as discrete components in the sending device or the receiving device.

In the various embodiments of this application, if there is no special description and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be mutually cited. The technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

It can be understood that the various numerical numbers involved in the embodiments of the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of each process mentioned above does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A communication method, characterized in that it comprises:

Determining a reference signal sequence, and sending the reference signal sequence;

Wherein, the length of the reference signal sequence is M, M is an integer greater than 1, the reference signal sequence is determined by a first base sequence of length M, and the first base sequence belongs to a first sequence group. The first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X-1}, the X is an integer greater than 30, the The base sequence of length M in the first sequence group is determined by the ZC sequence of length N; among them,

The value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to the first set of integers, In the case of a set of integers, the N is the smallest prime number greater than or equal to X;

or,

N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The method according to claim 1, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,
Z is a positive integer, u'is an integer determined according to the first group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The method of claim 2, wherein:

The Z is the smallest prime number greater than or equal to X; or, the Z is the smallest prime number greater than or equal to 30C.
The method according to claim 2 or 3, wherein the first sequence group includes a base sequence with a length of M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 and a base sequence with a length of M 1 determined by the root of q 2 And the ZC sequence of length N 2 determines the base sequence of length M 2 and the root q 1 and root q 2 satisfy the following formula:
The method according to any one of claims 2-4, wherein:

u∈{30,31,...,X-1}, u'=g(u), g(u)∈{0,1,2,...,30C-1}-{0,C, 2·C,...,29·C}; or,

u∈{0,1,...,29}, u'=C·u, the first sequence group includes a base sequence of length M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 , The base sequence of length M 2 determined by the ZC sequence with root of q 2 and length N 2 and the base sequence of length M 3 determined by the ZC sequence with root of q 3 and length N 3 , and the root q 1. Root q 2 and root q 3 satisfy the following formula:
The method of claim 5, wherein the g(u) satisfies the following formula:
The method according to claim 1, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

q=(e+B)mod N;

Wherein, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence, and e is an integer determined according to the group index u of the first sequence group and the length N of the first ZC sequence.
A communication method, characterized in that it comprises:

Determining a reference signal sequence, and sending the reference signal sequence;

Wherein, the length of the reference signal sequence is M, M is an integer greater than 1, the reference signal sequence is determined by a first base sequence of length M, and the first base sequence belongs to a first sequence group. The first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,...,X-1}, the X is an integer greater than 30, the The base sequence of length M in the first sequence group is determined by the ZC sequence of length N; there is a first sequence group set in the X sequence groups, and the first sequence group set includes the X sequence groups 30 sequence groups in

Wherein, when the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M;

Alternatively, when the first sequence group does not belong to the first sequence group set, the value range of M includes at least two elements in a first integer set, and the first integer set is greater than or equal to X/ 2 is a set consisting of integers less than or equal to X, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X;

Or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The method according to claim 8, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,
Z is a positive integer, u'is an integer determined according to the first group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The method of claim 9, wherein:

When the first sequence group belongs to the first sequence group set, the Z is 31;

When the first sequence group does not belong to the first sequence group set, the Z is the smallest prime number greater than or equal to X, or the Z is the smallest prime number greater than or equal to 30C.
The method according to claim 10, wherein the first sequence group set is composed of sequence groups whose group index is 0-29, wherein,

u∈{0,1,...,29}, u'=u; or,

u∈{30,31,...,X-1}, u'∈{0,1,...,30C-1}-{0,C,2C,...,29C}.
The method of claim 11, wherein:

When u ∈ {30,31,...,X-1},
A communication method, characterized in that it comprises:

The network device sends configuration information, where the configuration information is used to configure the first base sequence;

Receiving, by the network device, a reference signal sequence, where the reference signal sequence is determined by the first base sequence of length M;

Wherein, the first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,..., X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence with a length of M, and the at least one base sequence with a length of M is determined by a ZC sequence with a length of N of;

Wherein, the value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to In the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The method according to claim 13, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,

Z is a positive integer, u'is an integer determined according to the group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The method of claim 14, wherein:

The Z is the smallest prime number greater than or equal to X; or, the Z is the smallest prime number greater than or equal to 30C.
The method according to claim 14 or 15, wherein the first sequence group includes a base sequence with a length of M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 and a base sequence with a length of M 1 determined by the root of q 2 And the ZC sequence of length N 2 determines the base sequence of length M 2 and the root q 1 and root q 2 satisfy the following formula:
The method according to any one of claims 14-16, wherein:

u∈{30,31,...,X-1}, u'=g(u), g(u)∈{0,1,2,...,30C-1}-{0,C, 2·C,...,29·C}; or,

u∈{0,1,...,29}, u'=C·u, the first sequence group includes a base sequence of length M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 , The base sequence of length M 2 determined by the ZC sequence with root of q 2 and length N 2 and the base sequence of length M 3 determined by the ZC sequence with root of q 3 and length N 3 , and the root q 1. Root q 2 and root q 3 satisfy the following formula:
The method of claim 17, wherein the g(u) satisfies the following formula:
The method according to claim 13, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

q=(e+B)mod N;

Wherein, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence, and e is an integer determined according to the group index u of the first sequence group and the length N of the first ZC sequence.
A communication method, characterized in that it comprises:

The network device sends configuration information, where the configuration information is used to configure the first base sequence;

Receiving, by the network device, a reference signal sequence, the reference signal sequence being determined by the first base sequence of length M;

Wherein, the first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,..., X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence with a length of M, and the at least one base sequence with a length of M is determined by a ZC sequence with a length of N There is a first sequence group set in the X sequence groups, and the first sequence group set includes 30 sequence groups in the X sequence groups;

Wherein, when the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M;

Alternatively, when the first sequence group does not belong to the first sequence group set, the value range of M includes at least two elements in a first integer set, and the first integer set is greater than or equal to X/ 2 is a set consisting of integers less than or equal to X, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X;

Or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The method according to claim 20, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,
Z is a positive integer, u'is an integer determined according to the first group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The method of claim 21, wherein when the first sequence group belongs to the first sequence group set, the Z is 31;

When the first sequence group does not belong to the first sequence group set, the Z is the smallest prime number greater than or equal to X, or the Z is the smallest prime number greater than or equal to 30C.
The method according to claim 22, wherein the first sequence group set is composed of sequence groups whose group index is 0-29, wherein,

u∈{0,1,...,29}, u'=u; or,

u∈{30,31,...,X-1}, u'∈{0,1,...,30C-1}-{0,C,2C,...,29C}.
The method of claim 23, wherein:

When u ∈ {30,31,...,X-1},
[Corrected according to Rule 91 09.04.2020]
A communication device, characterized in that it comprises:
A processing unit, configured to determine a reference signal sequence, the length of the reference signal sequence is M, and M is an integer greater than 1;
A transceiver unit, configured to send the reference signal sequence;
Wherein, the reference signal sequence is determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, and the first sequence group is derived from X sequence groups according to a first group index u And the u∈{0,1,...,X-1}, the X is an integer greater than 30, the base sequence of length M in the first sequence group is determined by the length of N Is determined by the ZC sequence; among them,
The value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to the first set of integers, When an integer is set, the N is the smallest prime number greater than or equal to X;
or,
N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The device of claim 25, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,
Z is a positive integer, u'is an integer determined according to the first group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The device of claim 26, wherein:

The Z is the smallest prime number greater than or equal to X; or, the Z is the smallest prime number greater than or equal to 30C.
The device according to claim 26 or 27, wherein the first sequence group comprises a base sequence with a length of M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 and a base sequence with a length of M 1 determined by the root of q 2 And the ZC sequence of length N 2 determines the base sequence of length M 2 and the root q 1 and root q 2 satisfy the following formula:
The device according to any one of claims 26-28, wherein:

u∈{30,31,...,X-1}, u'=g(u), g(u)∈{0,1,2,...,30C-1}-{0,C, 2·C,...,29·C}; or,

u∈{0,1,...,29}, u'=C·u, the first sequence group includes a base sequence of length M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 , The base sequence of length M 2 determined by the ZC sequence with root of q 2 and length N 2 and the base sequence of length M 3 determined by the ZC sequence with root of q 3 and length N 3 , and the root q 1. Root q 2 and root q 3 satisfy the following formula:
The device of claim 29, wherein the g(u) satisfies the following formula:
The device of claim 25, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

q=(e+B)mod N;

Wherein, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence, and e is an integer determined according to the group index u of the first sequence group and the length N of the first ZC sequence.
A communication device, characterized in that it comprises:

A processing unit, configured to determine a reference signal sequence, the length of the reference signal sequence is M, and M is an integer greater than 1;

A transceiver unit, configured to send the reference signal sequence;

Wherein, the reference signal sequence is determined by a first base sequence of length M, the first base sequence belongs to a first sequence group, and the first sequence group is selected from X sequence groups according to a first group index u And the u ∈ {0,1,...,X-1}, the X is an integer greater than 30, the base sequence of length M in the first sequence group is determined by A first sequence group set exists in the X sequence groups, and the first sequence group set includes 30 sequence groups in the X sequence groups;

Wherein, when the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M;

Alternatively, when the first sequence group does not belong to the first sequence group set, the value range of M includes at least two elements in a first integer set, and the first integer set is greater than or equal to X/ 2 is a set consisting of integers less than or equal to X, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X;

Or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The device according to claim 32, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,
Z is a positive integer, u'is an integer determined according to the first group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The device of claim 33, wherein:

When the first sequence group belongs to the first sequence group set, the Z is 31;

When the first sequence group does not belong to the first sequence group set, the Z is the smallest prime number greater than or equal to X, or the Z is the smallest prime number greater than or equal to 30C.
The apparatus according to claim 34, wherein the first sequence group set is composed of sequence groups with sequence group group indexes ranging from 0 to 29, wherein,

u∈{0,1,...,29}, u'=u; or,

u∈{30,31,...,X-1}, u'∈{0,1,...,30C-1}-{0,C,2C,...,29C}.
The device of claim 35, wherein:

When u ∈ {30,31,...,X-1},
A communication device, characterized by comprising a processing unit and a transceiving unit, wherein the transceiving unit is based on the control of the processing unit and is configured to:

Sending configuration information, where the configuration information is used to configure the first base sequence;

Receiving a reference signal sequence, the reference signal sequence being determined by the first base sequence of length M;

Wherein, the first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,..., X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence with a length of M, and the at least one base sequence with a length of M is determined by a ZC sequence with a length of N of;

Wherein, the value range of M includes at least two elements in a first set of integers, and the first set of integers is a set of integers greater than or equal to X/2 and less than or equal to X, and when the M belongs to In the first set of integers, the N is the smallest prime number greater than or equal to X; or, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The device of claim 37, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,

Z is a positive integer, u'is an integer determined according to the group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The device of claim 38, wherein:

The Z is the smallest prime number greater than or equal to X; or, the Z is the smallest prime number greater than or equal to 30C.
The device according to claim 38 or 39, wherein the first sequence group comprises a base sequence with a length of M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 and a base sequence with a length of M 1 determined by the root of q 2 And the ZC sequence of length N 2 determines the base sequence of length M 2 and the root q 1 and root q 2 satisfy the following formula:
The device according to any one of claims 38-40, wherein:

u∈{30,31,...,X-1}, u'=g(u), g(u)∈{0,1,2,...,30C-1}-{0,C, 2·C,...,29·C}; or,

u∈{0,1,...,29}, u'=C·u, the first sequence group includes a base sequence of length M 1 determined by a ZC sequence with a root of q 1 and a length of N 1 , The base sequence of length M 2 determined by the ZC sequence with root of q 2 and length N 2 and the base sequence of length M 3 determined by the ZC sequence with root of q 3 and length N 3 , and the root q 1. Root q 2 and root q 3 satisfy the following formula:
The device of claim 41, wherein the g(u) satisfies the following formula:
The device of claim 37, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

q=(e+B)mod N;

Wherein, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence, and e is an integer determined according to the group index u of the first sequence group and the length N of the first ZC sequence.
A communication device, characterized by comprising a processing unit and a transceiving unit, wherein the transceiving unit is based on the control of the processing unit and is configured to:

Sending configuration information, where the configuration information is used to configure the first base sequence;

Receiving a reference signal sequence, the reference signal sequence being determined by the first base sequence of length M;

Wherein, the first base sequence belongs to the first sequence group, the first sequence group is determined from X sequence groups according to the first group index u, and the u∈{0,1,..., X-1}, the X is an integer greater than 30, the first sequence group includes at least one base sequence with a length of M, and the at least one base sequence with a length of M is determined by a ZC sequence with a length of N There is a first sequence group set in the X sequence groups, and the first sequence group set includes 30 sequence groups in the X sequence groups;

Wherein, when the first sequence group belongs to the first sequence group set, N is the largest prime number less than or equal to M;

Alternatively, when the first sequence group does not belong to the first sequence group set, the value range of M includes at least two elements in a first integer set, and the first integer set is greater than or equal to X/ 2 is a set consisting of integers less than or equal to X, and when the M belongs to the first set of integers, the N is the smallest prime number greater than or equal to X;

Or, when the first sequence group does not belong to the first sequence group set, N is the smallest prime number greater than or equal to S, and the S=max(X, 2M).
The apparatus of claim 44, wherein the first base sequence is determined by a first ZC sequence of length N, and the root q of the first ZC sequence satisfies the following formula:

among them,
Z is a positive integer, u'is an integer determined according to the first group index u, u'∈{0,1,...,30C-1}, C is greater than or equal to
The smallest integer of, B is a predefined value or an integer determined according to the sequence number of the reference signal sequence.
The apparatus of claim 45, wherein when the first sequence group belongs to the first sequence group set, the Z is 31;

When the first sequence group does not belong to the first sequence group set, the Z is the smallest prime number greater than or equal to X, or the Z is the smallest prime number greater than or equal to 30C.
The apparatus according to claim 46, wherein the first sequence group set is composed of sequence groups whose group index is 0-29, wherein,

u∈{0,1,...,29}, u'=u; or,

u∈{30,31,...,X-1}, u'∈{0,1,...,30C-1}-{0,C,2C,...,29C}.
The method of claim 47, wherein:

When u ∈ {30,31,...,X-1},
A communication device, wherein the communication device includes a processor, the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory , Enabling the device to implement the method according to any one of claims 1-7 or 8-12 or 13-19 or 20-24.
A computer-readable storage medium, characterized in that, the computer-readable storage medium stores a computer program, and when the computer program is executed by a computer, the computer executes claims 1-7 or 8-12 or The method of any one of 13-19 or 20-24.