WO2023011110A1 - Communication method and apparatus - Google Patents

Abstract

The present application relates to the technical field of communications, and discloses a communication method and apparatus, which are used for supporting the allocation of cyclic shifts to an antenna port when the cyclic shifts cannot be allocated to the antenna port by means of the existing method for allocating cyclic shifts at equal intervals. The method comprises: determining the number M of combs for sending a reference signal, wherein M is determined by the greatest common factor R of X and (I), X is the number of antenna ports for the reference signal, (I) is the maximum number of cyclic shifts on one comb, X and (I) are positive integers, and M is an integer greater than 1; and sending the reference signal on the M combs.

Description

A communication method and device

Cross References to Related Applications

This application claims the priority of a Chinese patent application with application number 202110884500.6 and application title "A Communication Method and Device" submitted to the China Patent Office on August 3, 2021, the entire contents of which are incorporated in this application by reference.

technical field

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

Background technique

In long term evolution (long term evolution, LTE) and new radio (new radio, NR) and other systems, reference signal sequences, such as demodulation reference signal (demodulation reference signal, DMRS) sequence and sounding reference signal (sounding reference signal, SRS) The sequence is a sequence generated according to the base sequence (base sequence, BS), where the base sequence can be a sequence generated by a ZC (Zadoff-Chu) sequence, such as the ZC sequence itself, or a sequence generated by a ZC sequence through cyclic shift, Or intercept the generated sequence for the ZC sequence.

For the same base sequence, different reference signal sequences can be obtained by using different cyclic shifts. The network device may allocate different cyclic shifts to different antenna ports of the terminal device to ensure the orthogonality of reference signal sequences between different antenna ports and avoid interference. However, the existing cyclic shift allocation is to allocate equal-spaced cyclic shifts to different antenna ports of the same terminal device. As the number of antenna ports increases or the number of available cyclic shifts decreases, the existing equal-spaced allocation The way of cyclic shift cannot meet the requirement, in this case, how to assign cyclic shift to the antenna ports becomes a problem to be solved.

Contents of the invention

Embodiments of the present application provide a communication method and device for allocating cyclic shifts to antenna ports when the existing method of allocating cyclic shifts at equal intervals cannot allocate cyclic shifts to antenna ports.

所述X、所述

是正整数；在同一时频资源上发送所述参考信号，所述参考信号是根据X个循环移位生成的，其中，所述X不能被所述

整除，所述X个循环移位为

个循环移位中值不同且不等间隔的循环移位。 In the first aspect, the embodiment of the present application provides a communication method, the method includes: determining the number X of antenna ports and the maximum number of cyclic shifts of the reference signal

The X, the

is a positive integer; the reference signal is sent on the same time-frequency resource, and the reference signal is generated according to X cyclic shifts, wherein the X cannot be determined by the

divisible, the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts.

Wherein, sending reference signals including X antenna ports on the same time-frequency resource indicates that the resource elements (resource element, RE) occupied by the reference signals of X antenna ports are the same, for example, the time-frequency resource may be on the same symbol Multiple consecutive REs or multiple REs at equal intervals on the same symbol (that is, comb teeth).

整除，无法为天线端口等间隔分配循环移位时，可以在

个循环移位中确定出X个值不同且不等间隔的循环移位分配给天线端口，从而支持无法为天线端口等间隔分配循环移位时，终端设备对参考信号的发送。 Using the above method, the number of antenna ports X of the reference signal cannot be determined by the maximum cyclic shift number of the reference signal

Evenly divisible, when it is not possible to assign cyclic shifts to the antenna ports at equal intervals, you can use the

Among the cyclic shifts, X cyclic shifts with different values and unequal intervals are determined and allocated to the antenna ports, so as to support the transmission of the reference signal by the terminal device when the cyclic shifts cannot be allocated to the antenna ports at equal intervals.

个循环移位{循环移位0，循环 移位1，…，循环移位

}中除去{循环移位i，循环移位

循环移位

…，循环移位

}外的循环移位，其中，所述循环移位0，循环移位1，…，循环移位

是

个按照从小到大顺序排序、且等间隔的循环移位，所述i是大于或等于0且小于

的任意一个整数。可选的，所述i由网络设备指示。 In a possible design, the X cyclic shifts are the

Rotate {Rotate 0, Rotate 1, ..., Rotate

} remove {circular shift i, cyclic shift

cyclic shift

..., cyclic shift

} outside the cyclic shift, wherein, the cyclic shift 0, cyclic shift 1, ..., cyclic shift

yes

Circular shifts sorted in ascending order and equally spaced, the i is greater than or equal to 0 and less than

any integer of . Optionally, the i is indicated by a network device.

个循环移位中确定出满足上述要求的X个循环移位，可以保证

个循环移位中除X个循环移位外剩余的

个循环移位的正交性，使得多个终端设备可以在同一时频资源上通过使用的循环移位不同实现码分复用，有利于提高资源利用率。 In the above design, the

X cyclic shifts that meet the above requirements are determined from the cyclic shifts, which can guarantee

The rest of the cyclic shifts except X cyclic shifts

The orthogonality of each cyclic shift enables multiple terminal devices to implement code division multiplexing by using different cyclic shifts on the same time-frequency resource, which is beneficial to improve resource utilization.

为6、所述X为4时，所述X个循环移位包括所述

个循环移位中以下中的一项；循环移位1、循环移位2、循环移位4、循环移位5；或，循环移位0、循环移位2、循环移位3、循环移位5；或，循环移位0、循环移位1、循环移位3、循环移位4。 In one possible design, when the

is 6, and when the X is 4, the X cyclic shifts include the

One of the following cyclic shifts; cyclic shift 1, cyclic shift 2, cyclic shift 4, cyclic shift 5; or, cyclic shift 0, cyclic shift 2, cyclic shift 3, cyclic shift Bit 5; or, Rotate 0, Rotate 1, Rotate 3, Rotate 4.

In the above design, it is beneficial to realize that the terminal device sending the reference signal including 2 antenna ports and the terminal device sending the reference signal including 4 antenna ports send reference signals in the same time-frequency resource, and they are orthogonal to each other, so as to improve resource utilization.

个循环移位中的所述X个循环移位。可选的，所述指示信息可以是位图或索引号；其中，所述位图用于指示所述

个循环移位中所述X个循环移位的分布；所述索引号用于指示多个循环移位集合中的一个，其中每个循环移位集合由

个循环移位中的至少一个循环移位组成，所述索引号所指示的循环移位集合由所述X个循环移位组成。 In a possible design, the X cyclic shifts are indicated by indication information from the network device, where the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts. Optionally, the indication information may be a bitmap or an index number; wherein, the bitmap is used to indicate the

The distribution of the X cyclic shifts in the cyclic shifts; the index number is used to indicate one of a plurality of cyclic shift sets, wherein each cyclic shift set consists of

The set of cyclic shifts indicated by the index number is composed of the X cyclic shifts.

In the above design, the implementation manners of the network device instructing the cyclic shift to the terminal device are enriched, which is beneficial to meet different communication requirements.

In a possible design, before sending the reference signal on the same time-frequency resource, the method further includes: generating X reference signal sequences according to the X cyclic shifts; generating X reference signal sequences according to the X reference signal sequences; A signal sequence generates the reference signal.

的最大公因子R确定，所述X为所述参考信号的天线端口数、所述

为一个梳齿上的最大循环移位数，所述X、所述

是正整数、所述M是大于1的整数；在M个梳齿上发送所述参考信号。 In the second aspect, the embodiment of the present application provides a communication method, the method includes: determining the number M of comb teeth used for sending reference signals, and the M is determined by X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum number of cyclic shifts on a comb, the X, the

is a positive integer, and the M is an integer greater than 1; the reference signal is sent on M comb teeth.

整除，无法天线端口等间隔分配循环移位时，可以灵活配置参考信号资源所占梳齿的个数，将参考信号包括的天线端口对应在多个梳齿上，在每个梳齿上为天线端口等间隔分配循环移位，从而支持终端设备对参考信号的发送。 Using the above method, the number of antenna ports X in the reference signal cannot be shifted by the maximum number of cyclic shifts on a comb

Evenly divisible, when the cyclic shift cannot be allocated at equal intervals to the antenna ports, the number of comb teeth occupied by the reference signal resource can be flexibly configured, and the antenna ports included in the reference signal correspond to multiple comb teeth, and each comb tooth is an antenna Ports are allocated with cyclic shifts at equal intervals, so as to support the transmission of reference signals by terminal equipment.

的最大公因子R确定，包括：所述M等于所述X除以所述R的值。 In one possible design, the M consists of X and

The determination of the greatest common factor R includes: said M is equal to the value of said X divided by said R.

个循环移位中的值不同且等间隔的循环移位，所述梳齿上发送的参考信号是根据所述R个循环移位生成的。 In a possible design, each of the M combs corresponds to R antenna ports, where the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts are

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts.

In a possible design, the M comb teeth are continuous, or the M comb teeth are equally spaced.

整除，所述

为所述参考信号的最大循环移位数，所述X个循环移位为

个循环移位中值不同且不等间隔的循环移位。 In the third aspect, the embodiment of the present application provides a communication method, the method includes: receiving a reference signal including X antenna ports on the same time-frequency resource; performing channel estimation according to the reference signal and the X reference signal sequences, the The X reference signal sequences are generated according to X cyclic shifts, wherein the X cannot be

divisible, the

is the maximum cyclic shift number of the reference signal, and the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts.

个循环移位{循环移位0，循环移位1，…，循环移位

}中除去{循环移位i，循环移位

循环移位

…，循环移位

}外的循环移位，其中，所述循环移位0，循环移位1，…，循环移位

是

个按照从小到大顺序排序、且等间隔的循环移位，所述i是大于或等于0且小于

的整数。 In a possible design, the X cyclic shifts are the

Rotate {Rotate 0, Rotate 1, ..., Rotate

} remove {circular shift i, cyclic shift

cyclic shift

..., cyclic shift

} outside the cyclic shift, wherein, the cyclic shift 0, cyclic shift 1, ..., cyclic shift

yes

Circular shifts sorted from small to large and equally spaced, the i is greater than or equal to 0 and less than

an integer of .

为6、所述X为4时，所述X个循环移位包括

个循环移位中以下中的一项；循环移位1、循环移位2、循环移位4、循环移位5；或，循环移位0、循环移位2、循环移位3、循环移位5；或，循环移位0、循环移位1、循环移位3、循环移位4。 In one possible design, when the

is 6, and when the X is 4, the X cyclic shifts include

One of the following cyclic shifts; cyclic shift 1, cyclic shift 2, cyclic shift 4, cyclic shift 5; or, cyclic shift 0, cyclic shift 2, cyclic shift 3, cyclic shift Bit 5; or, Rotate 0, Rotate 1, Rotate 3, Rotate 4.

In a possible design, the method further includes: indicating the i to a terminal device sending the reference signal.

个循环移位中的所述X个循环移位。可选的，所述指示信息可以是位图或索引号；其中，所述位图用于指示所述

个循环移位中所述X个循环移位的分布；所述索引号用于指示多个循环移位集合中的一个，其中每个循环移位集合由

个循环移位中的至少一个循环移位组成，所述索引号所指示的循环移位集合由所述X个循环移位组成。 In a possible design, the X cyclic shifts are indicated by indication information, where the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts. Optionally, the indication information may be a bitmap or an index number; wherein, the bitmap is used to indicate the

The distribution of the X cyclic shifts in the cyclic shifts; the index number is used to indicate one of a plurality of cyclic shift sets, wherein each cyclic shift set consists of

The set of cyclic shifts indicated by the index number is composed of the X cyclic shifts.

In a possible design, the method further includes: sending the indication information to a terminal device that sends the reference signal.

的最大公因子R确定，所述X为参考信号的天线端口数、所述

为一个梳齿上的最大循环移位数，所述X、所述

是正整数、所述M是大于1的整数；在M个梳齿上接收所述参考信号。 In a fourth aspect, the embodiment of the present application provides a communication method, the method includes: determining the number M of comb teeth, and the M is determined by X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum cyclic shift number on a comb, the X, the

is a positive integer, and the M is an integer greater than 1; the reference signal is received on M comb teeth.

的最大公因子R确定，包括：所述M等于所述X除以所述R的值。 In one possible design, the M consists of X and

The determination of the greatest common factor R includes: said M is equal to the value of said X divided by said R.

个循环移位中的值不同且等间隔的循环移位，所述梳齿上发送的参考信号是根据所述R个循环移位生成的。 In a possible design, each of the M combs corresponds to R antenna ports, where the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts are

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts.

In a possible design, the M comb teeth are continuous, or the M comb teeth are equally spaced.

In the fifth aspect, the embodiment of the present application provides a communication device, which has a method to realize the above-mentioned first aspect or any one of the possible design methods of the first aspect, or realize the above-mentioned second aspect or any one of the second aspect The functions of the method in the possible designs may be realized by hardware, or by executing corresponding software by hardware. The hardware or software includes one or more modules (or units) corresponding to the above functions, such as a transceiver unit and a processing unit.

In one possible design, the device may be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can perform any of the above-mentioned first aspect or the first aspect. A method in a possible design, or a method in a possible design that implements the above second aspect or any of the second aspects.

In a possible design, the device may be a terminal device.

In the sixth aspect, the embodiment of the present application provides a communication device, which has a method in design to realize the above third aspect or any possible design of the third aspect, or realize the above fourth aspect or any one of the fourth aspect The functions of the method in the possible designs may be realized by hardware, or by executing corresponding software by hardware. The hardware or software includes one or more modules (or units) corresponding to the above functions, such as a transceiver unit and a processing unit.

In one possible design, the device may be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can perform any of the third aspect or the third aspect. A method in a possible design, or a method in a possible design that implements the fourth aspect or any of the fourth aspects.

In one possible design, the device may be a network device.

In the seventh aspect, the embodiment of the present application provides a communication system, the communication system includes a terminal device and a network device, and the terminal device can execute the method in the above-mentioned first aspect or any possible design of the first aspect, The network device may execute the method in the third aspect or any possible design of the third aspect; or the terminal device may execute the method in the second aspect or any possible design of the second aspect , the network device may execute the method in any possible design of the fourth aspect or the fourth aspect.

In the eighth aspect, the embodiments of the present application provide a computer-readable storage medium, in which computer programs or instructions are stored, and when the computer programs or instructions are executed by a communication device, the above-mentioned first aspect or the first aspect can be realized. The method described in any possible design of one aspect, or realize the method described in any possible design of the above second aspect or the second aspect, or realize the above third aspect or any of the third aspects The method described in one possible design, or the method described in any possible design for realizing the fourth aspect or the fourth aspect.

In the ninth aspect, the embodiment of the present application also provides a computer program product, including computer programs or instructions, when the computer programs or instructions are executed by the communication device, any possible design of the above-mentioned first aspect or the first aspect can be realized The method described in, or the method described in any possible design for realizing the second aspect or the second aspect above, or the method described in any possible design for realizing the third aspect or the third aspect method, or the method described in the fourth aspect or any possible design of the fourth aspect.

In the tenth aspect, the embodiment of the present application also provides a chip, the chip is coupled with the memory, and is used to read and execute the program or instruction stored in the memory to realize the above first aspect or any possibility of the first aspect The method described in the design, or the method described in the second aspect or any possible design of the second aspect, or the third aspect or any possible design of the third aspect The method described above, or the method described in implementing the fourth aspect or any possible design of the fourth aspect.

For the technical effects that can be achieved from the third aspect to the tenth aspect, please refer to the technical effects that can be achieved in the first aspect or the second aspect, and will not be repeated here.

Description of drawings

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

FIG. 2A and FIG. 2B are schematic diagrams of communication scenarios provided by the embodiment of the present application;

FIG. 3A and FIG. 3B are schematic diagrams of the comb teeth occupied by the reference signal provided by the embodiment of the present application;

FIG. 4 is a schematic diagram of multiplexing the same time-frequency resource by reference signals of different terminal devices provided in an embodiment of the present application;

FIG. 5 is one of the schematic diagrams of the communication method provided by the embodiment of the present application;

FIG. 6 is one of the schematic diagrams of the comb teeth occupied by the SRS provided by the embodiment of the present application;

FIG. 7 is the second schematic diagram of the communication method provided by the embodiment of the present application;

FIG. 8 is one of the schematic diagrams of the distribution of cyclic shift values on the comb teeth provided by the embodiment of the present application;

FIG. 9 is the second schematic diagram of the distribution of cyclic shift values on the comb teeth provided by the embodiment of the present application;

Figure 10 is the second schematic diagram of the comb teeth occupied by the SRS provided by the embodiment of the present application;

Figure 11 is the third schematic diagram of the comb teeth occupied by the SRS provided by the embodiment of the present application;

Figure 12 is the third schematic diagram of the distribution of cyclic shift values on the comb teeth provided by the embodiment of the present application;

FIG. 13 is the fourth schematic diagram of the distribution of cyclic shift values on the comb teeth provided by the embodiment of the present application;

FIG. 14 is one of the schematic diagrams of the communication device provided by the embodiment of the present application;

FIG. 15 is the second schematic diagram of the communication device provided by the embodiment of the present application.

Detailed ways

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: global system of mobile communication (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE Time division duplex (time division duplex, TDD), universal mobile communication system (univeRMal mobile telecommunications system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, fifth generation (5th generation, 5G) Mobile communication system or new radio (new radio, NR), etc., the 5G mobile communication system described in this application includes non-standalone (non-standalone, NSA) 5G mobile communication system and/or independent network (standalone, SA ) 5G mobile communication system. The technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system may also be a public land mobile network (PLMN) network, a device-to-device (D2D) network, a machine-to-machine (M2M) network, an IoT network or other networks .

The architecture of the communication system applied in the embodiment of the present application may be shown in FIG. 1 . The communication system includes a radio access network 100 and a core network 200 . Optionally, the communication system may also include the Internet 300 . Wherein, the radio access network 100 may include at least one network device, such as 110a and 110b in FIG. 1 , and may also include at least one terminal device, such as 120a-120j in FIG. 1 . Wherein, 110a is a base station, 110b is a micro station, 120a, 120e, 120f and 120j are mobile phones, 120b is a car, 120c is a fuel dispenser, 120d is a home access point (HAP) arranged indoors or outdoors, 120g is a laptop, 120h is a printer, and 120i is a drone. Wherein, the same terminal device or network device may provide different functions in different application scenarios. For example, the mobile phones in Figure 1 include 120a, 120e, 120f and 120j. The mobile phone 120a can connect to the base station 110a, connect to the car 120b, communicate directly with the mobile phone 120e, and access the HAP. The mobile phone 120b can access the HAP and communicate with the mobile phone 120a. For direct communication, the mobile phone 120f can be connected to the micro station 110b, connected to the laptop 120g, connected to the printer 120h, and the mobile phone 120j can control the drone 120i.

The terminal device is connected to the network device, and the network device is connected to the core network. Core network equipment and network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the network equipment can be integrated on the same physical equipment, or a physical equipment can integrate part of the core network equipment. device functions and functions of some network devices. Terminal devices and network devices may be connected to each other in a wired or wireless manner. FIG. 1 is only a schematic diagram. The communication system may also include other devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .

Network equipment, also known as wireless access network equipment, can be a base station (base station), evolved base station (evolved NodeB, eNodeB), transmission reception point (transmission reception point, TRP), fifth generation (5th generation, 5G ) the next generation NodeB (gNB) in the mobile communication system, the base station in the sixth generation (6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; It may also be a module or unit that completes some functions of the base station, for example, it may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and also completes the function of the service data adaptation protocol (SDAP); the DU completes the functions of the base station The functions of the wireless link control layer and the medium access control (medium access control, MAC) layer can also complete the functions of part or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the third generation partnership project (3rd generation partnership project, 3GPP) related technical specifications. The network device may be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), or a relay node or a donor node. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

A terminal device may also be called a terminal, a user equipment (user equipment, UE), a mobile station, a mobile terminal, and the like. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (internet of things, IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

Network equipment and terminal equipment can be fixed or mobile. Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

The roles of network equipment and terminal equipment may be relative. For example, the helicopter or UAV 120i in FIG. 1 may be configured as a mobile network equipment. , the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, communication between 110a and 120i is performed through a wireless air interface protocol. Of course, communication between 110a and 120i may also be performed through an interface protocol between network devices. In this case, compared to 110a, 120i is also a network device. Therefore, both network equipment and terminal equipment can be collectively referred to as communication devices, 110a and 110b in FIG. 1 can be referred to as communication devices with network device functions, and 120a-120j in FIG. 1 can be referred to as communication devices with terminal device functions .

Communication between network devices and terminal devices, between network devices and network devices, between terminal devices and terminal devices can be performed through licensed spectrum, or through license-free spectrum, or through licensed spectrum and license-free spectrum at the same time Communication: Communication can be performed through a frequency spectrum below 6 gigahertz (GHz), or can be performed through a frequency spectrum above 6 GHz, and can also be performed using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.

In the embodiments of the present application, the functions of the network device may also be performed by modules (such as chips) in the network device, or may be performed by a control subsystem including the functions of the network device. Here, the control subsystem including network device functions may be the control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal equipment may also be performed by a module (such as a chip or a modem) in the terminal equipment, or may be performed by a device including the functions of the terminal equipment.

In this application, the network device sends downlink signals or downlink information to the terminal device, and the downlink information is carried on the downlink channel; the terminal device sends uplink signals or uplink information to the network device, and the uplink information is carried on the uplink channel. In order to communicate with the network device, the terminal device needs to establish a wireless connection with the cell controlled by the network device. A cell with which a terminal device has established a wireless connection is called the serving cell of the terminal device. When the terminal equipment communicates with the serving cell, it will also be interfered by signals from neighboring cells.

In addition, in the embodiments of the present application, the time-domain symbols may be Orthogonal Frequency Division Multiplexing (OFDM) symbols, or Discrete Fourier Transform-spread-OFDM (Discrete Fourier Transform-spread-OFDM) symbols. , DFT-s-OFDM) symbols. Unless otherwise specified, the symbols in the embodiments of the present application refer to time-domain symbols.

As shown in FIG. 2A, the communication system may be in a single carrier scenario or a carrier aggregation scenario (carrier aggregation, CA), and the network device and the terminal device communicate through a wireless network. One or more cells may be included under the network device. When the transmission direction of the communication system is uplink transmission, the terminal equipment is the sending end, and the network equipment is the receiving end; when the transmission direction of the communication system is downlink transmission, the network equipment is the sending end, and the terminal equipment is the receiving end.

As shown in Figure 2B, the communication system can also be in the scenario of dual connectivity (dual connectivity, DC) or coordinated multipoint transmission (coordinated multipoint transmission/reception, CoMP), the communication system includes network device a, network device b and terminal Device, network device a is the network device when the terminal device initially accesses, responsible for radio resource control (radio resource control, RRC) communication with the terminal device, network device b is added during RRC reconfiguration, and is used to provide Additional wireless resources. A terminal device configured with carrier aggregation is connected to network device a and network device b. The link between network device a and terminal device may be called the first link, and the link between network device b and terminal device may be Call it the second link.

The above-mentioned communication system applicable to this application is only an example, and the communication system applicable to this application is not limited thereto. For example, the number of network devices and terminal devices included in the communication system can also be other numbers, or the scenario of using a single network device , multi-carrier aggregation scenarios, dual link scenarios or D2D communication scenarios, CoMP scenarios, etc. The CoMP can be one or more scenarios in non-coherent joint transmission (NCJT), coherent joint transmission (CJT), joint transmission (JT), etc.

In order to facilitate the understanding of those skilled in the art, some terms in the embodiments of the present application are explained below.

1), comb teeth, comb teeth are a plurality of resource elements (resource elements, REs) at equal intervals on one symbol, where one RE occupies one symbol in the time domain and one subcarrier in the frequency domain , that is, one subcarrier in one symbol in the time domain is one RE.

2), reference signal and reference signal sequence. In the communication system, terminal equipment can send reference signals to network equipment, such as sending DMRS, SRS, etc. to network equipment, so that network equipment can perform operations such as estimating channel quality based on the reference signal; network equipment can also send reference signals to terminal equipment , such as sending a channel-state information reference signal (channel-state information reference signal, CSI-RS) to the terminal device, etc., for the terminal device to estimate the channel quality and report the channel quality information back to the network device.

通过如下公式生成： A reference signal sequence can be a sequence generated by the base sequence. For example, when the reference signal is SRS, the SRS sequence r _u,v (n) of length M can be generated by the base sequence of length M

Generated by the following formula:

in,

可以是基于ZC序列生成的序列，在上述例子中，基序列是ZC序列循环扩充后得到，除此之外。基序列也可以由其他方式生成，例如是ZC序列本身，或者是ZC序列通过循环移位生成的序列。 Among them, N _ZC is the length of the ZC sequence; α is the cyclic shift, which is configured by the network device; q is the root index (root index), which is determined according to u and v; j is the imaginary unit. u is the sequence group number, v is the sequence number, v=0 or v=1, u=0,1,...,29; the specific values of u and v are configured by the network device. base sequence

It may be a sequence generated based on the ZC sequence. In the above example, the base sequence is obtained after cyclic expansion of the ZC sequence, otherwise. The base sequence can also be generated by other methods, such as the ZC sequence itself, or a sequence generated by the ZC sequence through cyclic shift.

Currently, the cyclic shift is configured by the network device. For the same base sequence, different SRS sequences can be obtained by using different cyclic shifts. If there are two cyclic shifts, when their values α ₁ and α ₂ satisfy α ₁ mod 2π≠α ₂ mod 2π, the sequence x ₁ (m) obtained from the base sequence r(m) and α ₁ , and The sequence x ₂ (m) obtained from the base sequence r(m) and α ₂ is mutually orthogonal, that is, the cross-correlation coefficient is zero. Among them, the length of the sequences x ₁ (m) and x ₂ (m) is M, m=0,1...M-1, and the cross-correlation coefficient is defined as:

Since the cross-correlation coefficient is 0, the SRS sequences obtained based on the same base sequence and different cyclic shifts can be allocated to different terminal devices, and these terminal devices can send these SRS sequences on the same time-frequency resources. When the terminal When the delay spread of the channel of the device is smaller than the corresponding threshold value, these SRS sequences will not cause interference between terminal devices.

个天线端口，共对应

个序列。 It should be understood that, in each embodiment of the present application, one reference signal resource includes one or more antenna ports, and each antenna port may correspond to a sequence, and each sequence may be generated according to the method in each embodiment of the present application, and then generated including multiple Reference signal at the antenna port. Example: An SRS resource includes

antenna ports, corresponding to

sequence.

3), SRS resource and SRS sequence, the network device can issue SRS resource configuration information to the terminal device through RRC signaling, etc., and the SRS resource configuration information includes the number of antenna ports, the transmission comb value (transmissionComb), the comb tooth offset Set (combOffset) and other information. Wherein, the SRS adopts a comb-shaped (comb) transmission manner in the frequency domain, that is, for a single terminal device, the SRS of the antenna port is transmitted for every K _TC subcarriers in the frequency domain. The transmission comb value K _TC in NR supports K _TC =2 or K _TC =4 configuration. For the terminal device, after determining the sending comb density, that is, after transmitting the comb value K _TC , the combOffset can also be determined. When the comb value K _TC = 2 is transmitted in NR, the combOffset is one of {0, 1}, and K _TC = 4, combOffset is one of {0, 1, 2, 3}.

As shown in Figure 3A, a rectangular grid in Figure 3A represents one RE, and when the transmission comb value K _TC is 2, multiple REs are divided into comb 0 numbered 0 (comb 0 is defined by all combs in Figure 3A RE numbered 0) and comb tooth 1 numbered 1 (comb tooth 1 is composed of all REs numbered 1 in Figure 3A). When the comb tooth offset is 0, the terminal device sends SRS on comb tooth 0, that is, sends SRS on all REs numbered 0 in FIG. 3A .

As shown in Figure 3B, a rectangular grid in Figure 3B represents one RE, and the transmission comb tooth value is 4, and multiple REs are divided into comb tooth 0 numbered 0 (comb tooth 0 is represented by all numbers in Figure 3B 0), comb tooth 1 numbered 1 (comb tooth 1 is composed of all REs numbered 1 in Figure 3B), comb tooth 2 numbered 2 (comb tooth 2 is composed of all RE numbers numbered 2 in Figure 3B REs) and comb teeth 3 numbered 3 (comb teeth 3 consist of all REs numbered 3 in Figure 3B). When the comb tooth offset is 1, the terminal device sends SRS on comb tooth 1, that is, the terminal device sends SRS on all REs numbered 1 in FIG. 3B .

In addition, it should be understood that different terminal devices may be configured with different comb tooth offsets to implement frequency division multiplexing. As shown in Figure 4, a rectangular grid in Figure 4 represents one RE, and when the transmission comb value is 4, multiple REs are divided into comb 0 numbered 0 (comb 0 is defined by All REs numbered 0), comb 1 numbered 1 (comb 1 is composed of all REs numbered 1 in Figure 4), comb 2 numbered 2 (comb 2 is composed of all numbers in Figure 4 2) and comb tooth 3 numbered 3 (comb tooth 3 is composed of all REs numbered 3 in Figure 4). If the comb tooth offset configured for terminal device 1 is 0, then terminal device 1 sends SRS on comb tooth 0, and if the comb tooth offset configured for terminal device 2 is 2, then terminal device 2 sends SRS on comb tooth 2.

表示最大循环移位数，另外需要理解的是循环移位也可以称为循环移位值。 The SRSs of different terminal devices may use the same time-frequency resource, and at this time, different antenna ports of the SRSs of different terminal devices are multiplexed through different cyclic shifts (cs). Different antenna ports of the SRS of a terminal device may also use the same time-frequency resource, and at this time, different antenna ports of the SRS are multiplexed through different cyclic shifts. At present, the protocol specifies the maximum number of cyclic shifts supported by different transmission comb values (also called comb values). The corresponding relationship between the specific transmission comb values and the supported maximum cyclic shifts is shown in Table 1 below. Among them, K _TC represents the transmission comb value,

Indicates the maximum number of cyclic shifts. In addition, it should be understood that a cyclic shift can also be called a cyclic shift value.

Table 1

As shown in Table 1, it can be seen that when the transmission comb value is 2, the SRS generated according to 8 cyclic shifts can be sent at most on one comb; when the transmission comb value is 4, at most Send the SRS generated according to 12 cyclic shifts; when the transmission comb tooth value is 8, send the SRS generated according to 6 cyclic shifts at most on one comb tooth. Still taking the above-mentioned Figure 3A and Figure 3B as an example, when the transmission comb tooth value is 2 and the comb tooth offset is 0, SRS generated according to 8 cyclic shifts can be sent at most on the RE occupied by the SRS, that is to say , 8 SRSs can be sent on one comb (such as the comb composed of all REs numbered 0 in Figure 3A), and these 8 SRSs are orthogonally multiplexed on the same comb through 8 cyclic shift values, That is, on the same time-frequency resource; on the comb corresponding to the transmission comb value of 4 and the comb bias of 1, that is, when the transmission comb value is 4 and the comb bias is 1, the SRS occupies The SRS generated according to 12 cyclic shifts can be sent on the RE at most, that is to say, 12 SRSs can be sent on one comb (as shown on the comb composed of all REs numbered 1 in Figure 3B). The SRS is orthogonally multiplexed on the same comb through 12 cyclic shift values, that is, on the same time-frequency resource.

对应的

个循环移位可以采用以下公式确定： As an example: for the maximum number of cyclic shifts

corresponding

A cyclic shift can be determined using the following formula:

Among them, a _i represents the cyclic shift i, which means that the number is i cyclic shift,

个循环移位值中任意编号相邻的两个循环移位之间的间隔为

It can be seen from the above formula that the determined according to the above formula

The interval between two adjacent cyclic shifts with any number in the cyclic shift value is

从

个循环移位中为X个天线端口分配的X个循环移位满足按照从小到大排列，任意相邻的两个循环移位的差的绝对值相等、且等于

与X的比值与P的积，其中P为

个循环移按照从小到大排列，任意相邻的两个循环移位的差的绝对值，也即为

个循环移中任意编号相邻的两个循环移位的差的绝对值，也可以称为循环移位间隔。 The current cyclic shift allocation method is to allocate equal-spaced cyclic shifts to different antenna ports of the same terminal device. The allocation of equal-spaced cyclic shifts to different antenna ports of a terminal device can be understood as: if a terminal device needs to allocate The number of antenna ports for cyclic shift is X, and the maximum number of cyclic shifts is

from

The X cyclic shifts allocated to the X antenna ports in the cyclic shifts are arranged in ascending order, and the absolute values of the differences between any two adjacent cyclic shifts are equal and equal to

The product of the ratio of X to P, where P is

The cyclic shifts are arranged in ascending order, and the absolute value of the difference between any two adjacent cyclic shifts is

The absolute value of the difference between any number of adjacent cyclic shifts in a cyclic shift can also be called the cyclic shift interval.

为6、

个循环移位中循环移位0的值为0、循环移位1的值为π/3、循环移位2的值为2π/3、循环移位3的值为π、循环移位4的值为4π/3、循环移位5的值为5π/3为例，P为π/3、

与X的比值与P的积为2π/3，则为3个天线端口分配的3循环移位按从小到大排序可以为循环移位0、循环移位2和循环移位4，也可以为循环移位1、循环移位3和循环移位5，满足任意相邻的两个循环移位的差的绝对值为2π/3。 With X as 3,

for 6,

In the cyclic shift, the value of cyclic shift 0 is 0, the value of cyclic shift 1 is π/3, the value of cyclic shift 2 is 2π/3, the value of cyclic shift 3 is π, and the value of cyclic shift 4 The value is 4π/3, and the value of cyclic shift 5 is 5π/3 as an example, P is π/3,

The product of the ratio to X and P is 2π/3, then the 3 cyclic shifts assigned to the 3 antenna ports can be cyclic shift 0, cyclic shift 2, and cyclic shift 4 in ascending order, and can also be The cyclic shift 1, the cyclic shift 3 and the cyclic shift 5 satisfy that the absolute value of the difference between any two adjacent cyclic shifts is 2π/3.

为6的情况下，无法满足为4个天线端口分配的4个等间隔的循环移位，会影响终端设备对参考信号的发送。因此，在无法为终端设备分配等间隔的循环移位的情形下，应当如何为终端设备进行循环移位的分配，是当前亟需解决的技术问题。 However, as the number of antenna ports increases or the number of available cyclic shifts decreases, the existing method of allocating cyclic shifts at equal intervals cannot meet requirements, which affects the transmission of reference signals by terminal equipment. For example: beam management SRS, non-codebook SRS, antenna switching SRS and other types of SRS can support up to 4 antenna ports, at the maximum cyclic shift value

In the case of 6, the 4 equally spaced cyclic shifts allocated for 4 antenna ports cannot be satisfied, which will affect the transmission of the reference signal by the terminal equipment. Therefore, how to allocate cyclic shifts to the terminal equipment is a technical problem that needs to be solved urgently at present when the cyclic shifts at equal intervals cannot be allocated to the terminal equipment.

The communication method provided by the embodiment of the present application can support allocating cyclic shifts to antenna ports when the existing method of allocating cyclic shifts at equal intervals cannot allocate cyclic shifts to antenna ports, and supports terminal equipment to allocate reference signals sent to improve communication performance.

Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. In each embodiment of the present application, the reference signal can be SRS, such as beam management SRS, non-codebook SRS, antenna switching SRS, etc., and can also be other reference signals, such as DMRS, etc. In the introduction of various embodiments below, It is assumed that the reference signal is an SRS as an example, and the reference signal resource is also an SRS resource as an example. That is, all the SRSs described later can be replaced by reference signals.

Fig. 5 is a schematic diagram of a communication method provided by an embodiment of the present application, the method includes:

所述X、所述

是正整数。其中图5中的

中以K表示。 S501: The terminal device determines the number X of antenna ports and the maximum number of cyclic shifts of the SRS

The X, the

is a positive integer. where in Figure 5

Expressed in K.

In a possible implementation, the network device may indicate the SRS resource configuration to the terminal device by sending the first signaling to the terminal device. Wherein, the first signaling may be RRC signaling, media access control layer (media access control, MAC) control element (control element, CE) signaling, and the like. The SRS resource configuration may include the number X of antenna ports of the SRS, the transmission comb value K _TC, etc., and may also include information such as the time domain position of the SRS, the frequency domain position, the port number of the antenna port, and the comb tooth offset. After the terminal device receives the first signaling from the network device, it can determine the number of antenna ports X of the SRS, and according to the transmission comb value K _TC , and the corresponding relationship between the transmission comb value and the maximum cyclic shift number (as shown in Table 1), determine the maximum cyclic shift number of SRS

为6。 As an example, the network device indicates to the terminal device that the number of SRS antenna ports X is 4 and the transmission comb value K _TC is 8. The corresponding relationship of the number of bits can determine the maximum cyclic shift number of SRS

for 6.

整除，所述X个循环移位为

个循环移位中值不同且不等间隔的循环移位。 S502: The terminal device sends an SRS on the same time-frequency resource, and the network device receives the SRS, and the SRS is generated according to X cyclic shifts, wherein the X cannot be obtained by the

divisible, the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts.

Sending SRSs including X antenna ports on the same time-frequency resource means that the SRSs of X antenna ports occupy the same REs. The time-frequency resources can be multiple consecutive REs on the same symbol or multiple REs at equal intervals on the same symbol, and multiple REs at equal intervals on the same symbol can also be called comb teeth. Taking the frequency resource as a comb as an example, the terminal device may determine the comb used to send the SRS according to the SRS resource configuration indicated by the network device. As an example, assuming that the transmission comb value K _TC =4 and the comb offset is 1, the comb teeth (i.e., frequency resources) for transmitting SRSs containing X antenna ports are shown in Figure 6, where one The rectangular grid represents one RE, one RE is a symbol in the time domain, and one subcarrier in the frequency domain, and multiple REs are divided into comb 0 numbered 0 (comb 0 is composed of all numbers in Figure 6 0), comb tooth 1 numbered 1 (comb tooth 1 is composed of all REs numbered 1 in Figure 6), comb tooth 2 numbered 2 (comb tooth 2 is composed of all RE numbers numbered 2 in Figure 6 Composed of REs) and comb 3 numbered 3 (comb 3 is composed of all REs numbered 3 in FIG.

时，对于最大循环移位数对应的

个循环移位，也即循环移位0、循环移位1、循环移位2、…循环移位

可以采用如下方式确定： In one implementation, when the maximum number of cyclic shifts is

, for the maximum number of cyclic shifts corresponding to

cyclic shifts, that is, cyclic shift 0, cyclic shift 1, cyclic shift 2, ... cyclic shift

It can be determined as follows:

个循环移位中的第i+1个循环移位，

表示循环移位i的编号，

为最大循环移位数

f(i)为变量函数，其中f(i)可以等于i，或者

其中，

Among them, α _i represents the cyclic shift i, that is, the cyclic shift i numbered i or

The i+1th cyclic shift in the cyclic shifts,

Indicates the number of cyclic shift i,

is the maximum number of cyclic shifts

f(i) is a variable function, where f(i) can be equal to i, or

in,

为6，f(i)等于i为例，则

对于i＝0，a ₀＝0，也就是循环移位0的值为0。对于i＝1，a ₁＝π/3，也就是循环移位1的值为π/3。以此类推，循环移位2的值为2π/3、循环移位值3的值为π、循环移位4的值为4π/3、循环移位5的值为5π/3。循环移位0、循环移位1、循环移位2、循环移位3、循环移位4、循环移位5为从小到大顺序排序、且间隔均为π/3的6个循环移位。 Rotate with maximum number of bits

is 6, f(i) is equal to i as an example, then

For i=0, a ₀ =0, that is, the value of cyclic shift 0 is 0. For i=1, a ₁ =π/3, that is, the value of cyclic shift 1 is π/3. By analogy, the value of cyclic shift 2 is 2π/3, the value of cyclic shift 3 is π, the value of cyclic shift 4 is 4π/3, and the value of cyclic shift 5 is 5π/3. Cyclic shift 0, cyclic shift 1, cyclic shift 2, cyclic shift 3, cyclic shift 4, and cyclic shift 5 are 6 cyclic shifts sorted from small to large with intervals of π/3.

整除时，也即

时，采用等间隔分配循环移位的方式，无法在

个循环移位中为X个天线端口分配X个循环移位，X个循环移位满足从小到大排列，任意相邻的两个循环移位的差的绝对值相等、且等于

与P的积，其中，P为

个循环移位按照从小到大排列，任意相邻的两个循环移位的差的绝对值。以X为4、

为6，

个循环移位中循环移位0的值为0、循环移位1的值为π/3、循环移位2的值为2π/3、循环移位3的值为π、循环移位4的值为4π/3、循环移位5的值为5π/3为例，P为π/2，6个循环移位中任意2个循环移位的差的绝对值均不为

与X的比值与P的积，在6个循环移位中不能为4天线端口分配值不同、且等间隔的4个循环移位。 When the number of antenna ports X of the SRS cannot be

When divisible, that is

When , the method of allocating cyclic shifts at equal intervals cannot be used in

Among the cyclic shifts, X cyclic shifts are assigned to X antenna ports, and the X cyclic shifts are arranged from small to large, and the absolute value of the difference between any two adjacent cyclic shifts is equal and equal to

and P, where P is

The cyclic shifts are arranged in ascending order, and the absolute value of the difference between any two adjacent cyclic shifts. Take X as 4,

is 6,

In the cyclic shift, the value of cyclic shift 0 is 0, the value of cyclic shift 1 is π/3, the value of cyclic shift 2 is 2π/3, the value of cyclic shift 3 is π, and the value of cyclic shift 4 The value of 4π/3, the value of cyclic shift 5 is 5π/3 as an example, P is π/2, and the absolute value of the difference between any two cyclic shifts among the 6 cyclic shifts is not

For the product of the ratio of X and P, in the 6 cyclic shifts, 4 cyclic shifts with different values and equal intervals cannot be allocated to the 4 antenna ports.

整除时， 可以为X个天线端口分配

个循环移位中值不同且不等间隔的X循环移位，也即可以在

个循环移位为X天线端口分配任意X个值不同的循环移位。仍以上述X为4、

为6，6个循环移位中循环移位0的值为0、循环移位1的值为π/3、循环移位2的值为2π/3、循环移位3的值为π、循环移位4的值为4π/3、循环移位5的值为5π/3为例，则可以为终端设备的4个天线端口，在6个循环移位(循环移位0-循环移位5)中分配任意值不同的4个循环移位，如为4天线端口分配循环移位0、循环移位1、循环移位3和循环移位4等。 In order to support the method of allocating cyclic shifts at equal intervals, when the cyclic shifts cannot be allocated to the antenna ports, the cyclic shifts are allocated to the antenna ports. In a possible implementation, when the number of antenna ports X of the SRS cannot be allocated by

When divisible, X antenna ports can be assigned

The X cyclic shifts with different values and unequal intervals in the cyclic shifts, that is, they can be in

cyclic shifts assigns any X number of cyclic shifts with different values to the X antenna ports. Still with the above X as 4,

The value of cyclic shift 0 among the 6 cyclic shifts is 0, the value of cyclic shift 1 is π/3, the value of cyclic shift 2 is 2π/3, the value of cyclic shift 3 is π, and the value of cyclic shift 3 is π. The value of the shift 4 is 4π/3, and the value of the cyclic shift 5 is 5π/3 as an example, then it can be 4 antenna ports of the terminal device, in 6 cyclic shifts (cyclic shift 0-cyclic shift 5 ) to assign any 4 cyclic shifts with different values, such as assigning cyclic shift 0, cyclic shift 1, cyclic shift 3, and cyclic shift 4 to 4 antenna ports.

个循环移位中的X个值不同且等不间隔的循环移位可以由网络设备指示给终端设备。例如网络设备可以在指示SRS资源配置的第一信令中携带指示信息，用于指示终端设备

个循环移位中的X个值不同且不等间隔的循环移位。 Among them, for

Among the cyclic shifts, X cyclic shifts with different values and no equal intervals may be indicated by the network device to the terminal device. For example, the network device may carry indication information in the first signaling indicating SRS resource configuration, which is used to indicate the terminal equipment

X cyclic shifts with different values and unequal intervals among the cyclic shifts.

个循环移位中的X个循环移位可以由来自网络设备的位图(bitmap)指示，所述位图用于指示

个循环移位中X个循环移位的分布。 As an example,

The X cyclic shifts in the N cyclic shifts can be indicated by a bitmap (bitmap) from the network device, which is used to indicate

The distribution of X cyclic shifts in cyclic shifts.

相等，位图的第一位指示

个循环移位中第一个循环移位(即循环移位0)是否可用，依次类推位图的第二位指示

个循环移位中第二个循环移位(即循环移位1)是否可用，……，具体可以通过1指示循环移位可用，通过0指示循环移位不可用。以

为6、X为4，位图为“011011”为例，则指示X个循环移位为

个循环移位中的循环移位1、循环移位2、循环移位4、循环移位5。 Among them, the length (number of bits) of the bitmap can be compared with the maximum number of cyclic shifts

equal, the first bit of the bitmap indicates

Whether the first cyclic shift (that is, cyclic shift 0) in the cyclic shifts is available, and so on, the second bit of the bitmap indicates

Whether the second cyclic shift (that is, cyclic shift 1) in the cyclic shifts is available, ... specifically, 1 may be used to indicate that the cyclic shift is available, and 0 may be used to indicate that the cyclic shift is not available. by

is 6, X is 4, and the bitmap is "011011" as an example, it indicates that X cyclic shifts are

cyclic shift 1, cyclic shift 2, cyclic shift 4, and cyclic shift 5 among the cyclic shifts.

个循环移位中的X个循环移位还可以由来自网络设备的索引号指示，所述索引号用于指示多个循环移位集合中的一个，其中每个循环移位集合由

个循环移位中的至少一个循环移位组成，所述索引号所指示的循环移位集合由X个循环移位组成。 As another example,

The X cyclic shifts in the N cyclic shifts can also be indicated by an index number from the network device, which is used to indicate one of a plurality of cyclic shift sets, wherein each cyclic shift set is represented by

The set of cyclic shifts indicated by the index number consists of X cyclic shifts.

分别预先定义循环移位集合索引表，或者由网络设备针对不同的最大循环移位数

配置循环移位集合索引表后，通过广播或组播等方式发送给终端设备。在循环移位集合索引表中每一个表项对应一个预设的循环移位集合，并且每一个表项与一个索引号对应。示例的，当

为6时，循环移位集合索引表可以如下表2所示： Specifically, network devices and terminal devices can pre-set different maximum cyclic shift numbers

Respectively pre-define the cyclic shift set index table, or the network device for different maximum cyclic shift

After the cyclic shift set index table is configured, it is sent to the terminal device through broadcast or multicast. Each entry in the cyclic shift set index table corresponds to a preset cyclic shift set, and each entry corresponds to an index number. example, when

When it is 6, the cyclic shift set index table can be shown in Table 2 below:

The index number set of cyclic shifts 0 0,3 1 1, 4 2 2,5 3 1, 2, 4, 5 4 0, 2, 3, 5 5 0, 1, 3, 4

Table 2

为6、X为4、索引号为3为例，索引号3指示X个循环移位为

个循环移位中的循环移位1、循环移位2、循环移位4、循环移位5。 by

is 6, X is 4, and the index number is 3. For example, the index number 3 indicates that X cyclic shifts are

cyclic shift 1, cyclic shift 2, cyclic shift 4, and cyclic shift 5 among the cyclic shifts.

个循环移位中不同的循环移位，实现不同终端设备在同一时频资源(如梳齿)上发送SRS，当为多个天线端口分配的多个循环移位可以满足值不同且等间隔时，基于多个天线端口对应的多个循环移位生成的多个SRS序列的正交性较好，干扰较少。因此，在一些实施中，当X不能被

整除时，可以优先保障

个循环移位中除X个循环移位外剩余的

个循环移位的正交性。 In addition, considering that network devices can be assigned to different terminal devices

Different cyclic shifts among different cyclic shifts enable different terminal devices to send SRS on the same time-frequency resource (such as comb teeth). When multiple cyclic shifts allocated to multiple antenna ports can meet the requirements of different values and equal intervals , multiple SRS sequences generated based on multiple cyclic shifts corresponding to multiple antenna ports have better orthogonality and less interference. Therefore, in some implementations, when X cannot be

When divisible, priority can be guaranteed

The rest of the cyclic shifts except X cyclic shifts

Orthogonality of cyclic shifts.

整除时，可以优先保障剩余的

个循环移位满足值不同且等间隔。 That is, when X cannot be

When divisible, the remaining

The cyclic shifts satisfy different and equally spaced values.

整除时，为了保障剩余的

个循环移位满足值不同且等间隔，可以限定为X个天线端口分配的X个循环移位，为

个循环移位{循环移位0，循环移位1，…，循环移位

}中除去{循环移位i，循环移位

循环移位

…，循环移位

}外的循环移位。也可以按照该限定条件从

个循环移位中选择为X个天线端口分配的X个循环移位，以保障剩余的

个循环移位满足值不同且等间隔。其中，i是大于或等于0且小于

的任意一个整数。或者，本申请实施例的上述技术方案可以理解为：确定参考信号的天线端口数X和最大循环移位数

所述X、所述

是正整数； As an example, when X cannot be

When divisible, in order to ensure the remaining

The cyclic shifts satisfy the values of different and equal intervals, which can be limited to X cyclic shifts allocated to X antenna ports, as

Rotate {Rotate 0, Rotate 1, ..., Rotate

} remove {circular shift i, cyclic shift

cyclic shift

..., circular shift

} outside the cyclic shift. It is also possible to follow this qualification from

Select X cyclic shifts allocated to X antenna ports among cyclic shifts to guarantee the remaining

The cyclic shifts satisfy different and equally spaced values. where i is greater than or equal to 0 and less than

any integer of . Alternatively, the above technical solution of the embodiment of the present application can be understood as: determining the number X of antenna ports and the maximum number of cyclic shifts of the reference signal

The X, the

is a positive integer;

整除，所述X个循环移位为

个循环移位中值不同且不等间隔的循环移位，所述

个循环移位为

个循环移位中值不同且等间隔的循环移位。 Send the reference signal on the same time-frequency resource, the reference signal is generated according to X cyclic shifts, wherein the X cannot be determined by the

divisible, the X cyclic shifts are

The cyclic shifts with different values and unequal intervals in the cyclic shifts, the

cyclic shift is

The cyclic shifts with different median values and equal intervals.

个循环移位可以是分配给不同终端设备的循环移位，例如所述X个循环移位分配给终端设备1，所述

个循环移位分配给终端设备2。 Optionally, the X cyclic shifts and the

The X cyclic shifts may be cyclic shifts allocated to different terminal devices, for example, the X cyclic shifts are allocated to terminal device 1, the

cyclic shifts are assigned to terminal device 2.

为6、X为4、

个循环移位中循环移位0的值为0、循环移位1的值为π/3、循环移位2的值为2π/3、循环移位3的值为π、循环移位4的值为4π/3、循环移位5的值为5π/3为例，则

个循环移中任意编号相邻的两个循环移位的差的绝对值P等于π/3、

0≤i＜3，i可以为0、1、2，当i为0时，X个循环移位包括

个循环移位中的循环移位1、循环移位2、循环移位4、循环移位5，未使用的2个循环移位(循环移位0和循环移位3)的差的绝对值为π等于6/2与π/3的积，满足值不同且等间隔的条件，具有较好的正交性，可以由网络设备分配给其它终端设备使用。 by

is 6, X is 4,

In the cyclic shift, the value of cyclic shift 0 is 0, the value of cyclic shift 1 is π/3, the value of cyclic shift 2 is 2π/3, the value of cyclic shift 3 is π, and the value of cyclic shift 4 The value is 4π/3, and the value of cyclic shift 5 is 5π/3 as an example, then

The absolute value P of the difference between any number of adjacent cyclic shifts in a cyclic shift is equal to π/3,

0≤i<3, i can be 0, 1, 2, when i is 0, X cyclic shifts include

Cyclic shift 1, cyclic shift 2, cyclic shift 4, cyclic shift 5 in cyclic shifts, the absolute value of the difference between the unused 2 cyclic shifts (cyclic shift 0 and cyclic shift 3) π is equal to the product of 6/2 and π/3, which satisfies the condition that the values are different and equally spaced, has good orthogonality, and can be allocated by network equipment to other terminal equipment for use.

个循环移位中的循环移位0、循环移位2、循环移位3、循环移位5，未使用的2个循环移位(循环移位1和循环移位4)的差的绝对值为π等于6/2与π/3的积，满足值不同且等间隔的条件，具有较好的正交性，可以由网络设备分配给其它终端设备使用。 When i is 1, X cyclic shifts include

Cyclic shift 0, cyclic shift 2, cyclic shift 3, cyclic shift 5 in cyclic shifts, the absolute value of the difference between the unused 2 cyclic shifts (cyclic shift 1 and cyclic shift 4) π is equal to the product of 6/2 and π/3, which satisfies the condition that the values are different and equally spaced, has good orthogonality, and can be allocated by network equipment to other terminal equipment for use.

个循环移位中的循环移位0、循环移位1、循环移位3、循环移位4，未使用的2个循环移位(循环移位2和循环移位5)的差的绝对值为π等于6/2与π/3的积，满足值不同且等间隔的条件，具有较好的正交性，可以由网络设备分配给其它终端设备使用。 When i is 2, X cyclic shifts include

Cyclic shift 0, cyclic shift 1, cyclic shift 3, cyclic shift 4 in cyclic shifts, the absolute value of the difference between the unused 2 cyclic shifts (cyclic shift 2 and cyclic shift 5) π is equal to the product of 6/2 and π/3, which satisfies the condition that the values are different and equally spaced, has good orthogonality, and can be allocated by network equipment to other terminal equipment for use.

个循环移位中的X个循环移位。 In some possible implementations, the network device may also indicate to the terminal device the i

X cyclic shifts in cyclic shifts.

个循环移位中X个循环移位的位图、索引号、i等可以通过网络设备向终端设备发送的指示SRS资源的第一信令指示，也可以通过其它信令指示。 Among them, used to indicate

The bitmap, index number, i, etc. of the X cyclic shifts among the cyclic shifts may be indicated by the first signaling indicating the SRS resource sent by the network device to the terminal device, or may be indicated by other signaling.

After obtaining the X cyclic shifts allocated to the X antenna ports, the terminal device can generate X SRS sequences according to the base sequence and the X cyclic shifts, and generate and send SRSs according to the X SRS sequences. Taking X as 4, the X cyclic shifts allocated to X antenna ports are cyclic shift 1 "π/3", cyclic shift 2 "2π/3", cyclic shift 4 "4π/3", cyclic shift Take bit 5 "5π/3" as an example, the terminal device can shift 1 "π/3", cyclic shift 2 "2π/3", cyclic shift 4 "4π/3", cyclic shift 5 "5π/3" generates 4 SRS sequences, each of the 4 antenna ports corresponds to a SRS sequence, and by mapping the SRS sequence corresponding to each antenna port to the corresponding subcarrier (instant frequency resource), the content of SRS post-transmission for 4 antenna ports.

S503: The network device performs channel estimation according to the SRS and the X SRS sequences.

整除，所述

为所述SRS的最大循环移位数，所述X个循环移位为

个循环移位中值不同且不等间隔的循环移位。 Wherein, the X SRS sequences are generated according to X cyclic shifts, wherein, the X cannot be

divisible, the

is the maximum cyclic shift number of the SRS, and the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts.

Since the transmission of the SRS through the channel will be affected by noise and multipath in the channel, the SRS received by the network device is a deformed SRS. The network device can determine the original X SRS sequences based on the X cyclic shifts indicated to the terminal device. Based on the original X SRS sequences and the deformed SRS obtained through channel transmission, the network device can determine the network device and The channel between terminal devices is estimated.

The above method embodiments mainly start from the point of view of cyclic shifts with different X values and unequal intervals indicated to the terminal device, and solve the problem that the existing equal interval The way of allocating cyclic shifts cannot meet the requirements, which affects the problem that the terminal equipment sends the SRS. In some implementations, it is also possible to flexibly configure the number of comb teeth of SRS resources to solve the problem of increasing the number of antenna ports or the number of available cyclic shifts by flexibly configuring the number of comb teeth of SRS resources. Reduce the problem that the existing method of assigning cyclic shifts at equal intervals cannot meet the requirements and affect the transmission of the SRS by the terminal equipment. The following describes in detail in conjunction with the embodiments.

Fig. 7 is a schematic diagram of another communication method provided by the embodiment of the present application, the method includes:

S701: The terminal device determines the number M of comb teeth used for sending the SRS, where M is an integer greater than 1.

In the method of allocating cyclic shifts at equal intervals, when the network device configures SRS resources for the terminal device, the network device will not indicate to the terminal device the number M of comb teeth used to send SRS, and the terminal device sends on one comb tooth by default. SRS. As shown in Figure 8, a rectangular grid in Figure 8 represents one RE, and when the transmission comb value K _TC is 4, multiple REs are divided into comb 0 numbered 0 (comb 0 is represented by Figure 8 Comb tooth 1 with number 1 (comb tooth 1 is composed of all RE with number 1 in Figure 8), comb tooth 2 with number 2 (comb tooth 2 is composed of all REs with number 1 in Figure 8 RE numbered 2) and comb tooth 3 numbered 3 (comb tooth 3 is composed of all REs numbered 3 in Figure 8). If the comb offset is 0, the terminal device sends SRS on comb 0; if the comb offset is 1, the terminal transmits SRS on comb 1; if the comb offset is 2, the terminal sends SRS on comb 1; SRS is sent on comb tooth 2. If the comb tooth offset is 3, the terminal device sends SRS on comb tooth 3. In Figure 8, the comb tooth offset is 0, and the terminal device sends SRS on comb tooth 0 as an example. Identifies the comb tooth used by the terminal device to send SRS.

整除时，也即

时，采用等间隔分配循环移位的方式，无法在

个循环移位中为X个天线端口分配X个循环移位满足从小到大排列，任意相邻的两个循环移位的差的绝对值相等、且等于

与X的比值与P的积，其中P为

个循环移位按照从小到大排列， 任意相邻的两个循环移位的差的绝对值。需要理解的是，一个梳齿上的最大循环移位数

也可以称为SRS的最大循环移位数

可以根据SRS的传输梳齿值K _TC，以及传输梳齿值与最大循环移位数的对应关系(如表1)确定，对于

个循环移位的值的确定方式，可以参照图5所示的方法实施例中的实现，不再进行赘述。 The number of antenna ports X of the SRS cannot be shifted by the maximum number of cyclic shifts on a comb

When divisible, that is

When , the method of allocating cyclic shifts at equal intervals cannot be used in

Among the cyclic shifts, X cyclic shifts are assigned to X antenna ports to meet the arrangement from small to large, and the absolute value of the difference between any two adjacent cyclic shifts is equal and equal to

The product of the ratio of X to P, where P is

The cyclic shifts are arranged in ascending order, and the absolute value of the difference between any two adjacent cyclic shifts. What needs to be understood is that the maximum number of cyclic shifts on a comb

It can also be called the maximum cyclic shift number of SRS

It can be determined according to the transmission comb value K _TC of the SRS, and the corresponding relationship between the transmission comb value and the maximum cyclic shift number (as shown in Table 1), for

The manner of determining the value of a cyclic shift may refer to the implementation in the method embodiment shown in FIG. 5 , and details are not repeated here.

为12，如果

个循环移位中循环移位0的值为0、循环移位1的值为π/6、循环移位2的值为π/3、循环移位3的值为3π/6、循环移位4的值为2π/3、…、循环移位10的值为11π/6、循环移位11的值为2π，则P为π/6、

与P的积为π/4，12个循环移位中任意2个循环移位的差的绝对均不等于π/4，在12个循环移位中不能为8天线端口分配值不同、且等间隔的8个循环移位。 Taking the number of antenna ports X as 8, the transmission comb value K _TC as 4, and the terminal device sending SRS on comb 0 shown in Figure 8 as an example, it can be seen from Table 1 that when the transmission comb value K _TC is 4 , the maximum number of cyclic shifts on a comb tooth

is 12, if

In a cyclic shift, the value of cyclic shift 0 is 0, the value of cyclic shift 1 is π/6, the value of cyclic shift 2 is π/3, the value of cyclic shift 3 is 3π/6, and the value of cyclic shift The value of 4 is 2π/3, ..., the value of cyclic shift 10 is 11π/6, and the value of cyclic shift 11 is 2π, then P is π/6,

The product with P is π/4, and the absolute difference between any two cyclic shifts in the 12 cyclic shifts is not equal to π/4. In the 12 cyclic shifts, the 8 antenna ports cannot be assigned different values, and equal 8 cyclic shifts of interval.

整除，但是由于发送SRS梳齿的个数为2、可以让每个梳齿仅对应部分SRS的天线端口，实现在每个梳齿为终端设备的天线端口分配等间隔的循环移位。仍以

个循环移位中循环移位0的值为0、循环移位1的值为π/6、循环移位2的值为π/3、循环移位3的值为3π/6、循环移位4的值为2π/3、…、循环移位10的值为11π/6、循环移位11的值为2π为例，可以让梳齿0上发送根据4个循环移位(对应4个天线端口)生成的SRS、梳齿1上也发送根据4个循环移位(对应4个天线端口)生成的SRS，则梳齿0和梳齿1均对应4个天线端口，最大循环移位数

能够被4整除，可以为每个梳齿对应的4个天线端口分配

个循环移位中的4个值不同、且等间隔的循环移位。 As shown in Figure 9, when the terminal device sends SRS on comb 0 and comb 1 shown in Figure 8, although X still cannot be

Evenly divisible, but since the number of sending SRS combs is 2, each comb can only correspond to a part of the antenna port of the SRS, so that each comb can be allocated to the antenna ports of the terminal device with equal intervals of cyclic shift. still with

In a cyclic shift, the value of cyclic shift 0 is 0, the value of cyclic shift 1 is π/6, the value of cyclic shift 2 is π/3, the value of cyclic shift 3 is 3π/6, and the value of cyclic shift The value of 4 is 2π/3, ..., the value of cyclic shift 10 is 11π/6, and the value of cyclic shift 11 is 2π. For example, comb tooth 0 can be sent according to 4 cyclic shifts (corresponding to 4 antennas port) and SRS generated by 4 cyclic shifts (corresponding to 4 antenna ports) are also sent on comb 1, then both comb 0 and comb 1 correspond to 4 antenna ports, and the maximum cyclic shift

Divisible by 4, the 4 antenna ports corresponding to each comb can be allocated

The 4 values in the cyclic shifts are different and equally spaced cyclic shifts.

For example: assign cyclic shift 0 "0", cyclic shift 3 "3π/6", cyclic shift 6 "π", cyclic shift 9 "3π/2" to the 4 antenna ports corresponding to comb tooth 0, and The four antenna ports corresponding to the comb tooth 1 are also assigned cyclic shift 0 "0", cyclic shift 3 "3π/6", cyclic shift 6 "π", and cyclic shift 9 "3π/2". Or assign cyclic shift 0 "0", cyclic shift 3 "3π/6", cyclic shift 6 "π", cyclic shift 9 "3π/2" to the 4 antenna ports corresponding to comb tooth 0. The four antenna ports corresponding to tooth 1 are assigned cyclic shift 1 "π/6", cyclic shift 4 "2π/3", cyclic shift 7 "7π/6", cyclic shift 10 "5π/3" and so on.

Therefore, the embodiment of the present application can start from the perspective of flexibly configuring the number of comb teeth (that is, the number of comb teeth is not limited to 1). Implements assigning cyclic shifts to antenna ports.

的最大公因子R，确定梳齿的个数M，如令M等于X除以R的值，或在SRS资源配置中携带梳齿的个数M。 The number M of comb teeth of the SRS may be indicated by the network device to the terminal device through SRS resource configuration or the like. As an example, the network device can be based on the number of antenna ports X of the SRS and the maximum number of cyclic shifts of the SRS

The greatest common factor R of , determines the number M of comb teeth, such as setting M equal to the value of X divided by R, or the number M of comb teeth carried in the SRS resource configuration.

For SRS resource configuration, the network device may indicate to the terminal device by sending the first signaling to the terminal device. Wherein, the first signaling may be RRC signaling, MAC CE signaling and the like. The SRS resource configuration may include the number X of antenna ports of the SRS, the transmission comb value K _TC, etc., and may also include information such as the time domain position of the SRS, the frequency domain position, the port number of the antenna port, and the comb tooth offset. After the terminal device receives the first signaling from the network device, it can determine the number of antenna ports X of the SRS, and according to the transmission comb value K _TC , and the corresponding relationship between the transmission comb value and the maximum cyclic shift number (as shown in Table 1), determine the maximum cyclic shift number of SRS

的最大公因子R确定，如令M等于X除以R的值。例如，在X为4、

为6时，R为2，M等于4/2，为2。 In other implementations, for the determination of the number M of comb teeth, the terminal device can also be directly based on X and

Determined by the greatest common factor R, such as making M equal to the value of X divided by R. For example, where X is 4,

When it is 6, R is 2, and M is equal to 4/2, which is 2.

In addition, the M comb teeth may be continuous or equally spaced. As an example, it is possible to pre-configure the M combs on the network device and the terminal device through a protocol to be continuous, that is, in the frequency domain, the M combs are adjacent and the numbers of the M combs are continuous; Protocols, etc. pre-configure M combs on network devices and terminal devices to be equally spaced, for example, pre-configure M combs with intervals of 1 or 2 combs between the two closest combs in the frequency domain. Of course, the specific distribution of the M comb teeth can also be indicated by the network device through a bitmap or the like. For example, when the transmission comb value K _TC is 4, the comb bias is 0, and the number of combs M is 2, the network device can use the bitmap 1100 to indicate the occupancy of comb 0 and comb 1, comb 0 and comb 1 is continuous, and the bitmap 1010 can also indicate that comb tooth 0 and comb tooth 2 are occupied, and comb tooth 0 and comb tooth 2 are discontinuous.

Taking the transmission comb value K _TC of SRS as 4, the comb bias as 1, the number of combs as M as 2, and the M combs as an example, the terminal device sends the SRS transmission including X antenna ports. Combs (i.e., frequency resources) As shown in FIG. 10 , combs for sending SRS are comb 1 and comb 2 . Take the transmission comb value K _TC of SRS as 4, the comb bias as 1, the number of combs as M as 2, and the distance between the two nearest combs in the intermediate frequency domain of M combs is 1 comb as an example , then the terminal device transmits the combs of the SRS (i.e. frequency resources) including X antenna ports. As shown in FIG.

Among them, one rectangular grid in Figure 10 and Figure 11 represents one RE, and multiple REs are divided into comb teeth 0 numbered 0 (comb tooth 0 is composed of all REs numbered 0 in Figure 10 or Figure 11), numbered Comb tooth 1 is 1 (comb tooth 1 is composed of all REs numbered 1 in Figure 10 or 11), comb tooth 2 is numbered 2 (comb tooth 2 is composed of all REs numbered 2 in Figure 10 or 11 Composition) and comb teeth 3 numbered 3 (comb teeth 3 are composed of all REs numbered 3 in Figure 10 or Figure 11).

S702: The terminal device sends the SRS on M combs, and the network device receives the SRS on the M combs.

In the embodiment of the present application, the implementation of determining the M comb teeth by the network device may refer to the implementation of determining the M comb teeth by the terminal device, and details are not repeated here. After the M combs are determined, the terminal device can send the SRS on the M combs, and the network device can receive the SRS on the M combs.

个循环移位中的值不同且等间隔的循环移位，在梳齿上发送的SRS是根据所述R个循环移位生成的。 Specifically, the number of antenna ports corresponding to each of the M combs may be the same or different. Taking the same number of antenna ports corresponding to each of the M combs as an example, each comb corresponds to R antenna ports, and the R cyclic shifts corresponding to the R antenna ports are

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the SRS sent on the comb teeth is generated according to the R cyclic shifts.

In some implementations, the network device may indicate to the terminal device the R cyclic shifts corresponding to each comb among the M combs by using cyclic shift indication information or the like. Wherein, the R cyclic shifts corresponding to each comb tooth may be the same or different. The R cyclic shifts corresponding to each comb tooth are the same, which can be understood as: for example, for one of the M comb teeth, the corresponding cyclic shifts are cyclic shift 0, cyclic shift 2, and cyclic shift 4, Then, for other comb teeth in the M comb teeth, the corresponding cyclic shifts are also cyclic shift 0, cyclic shift 2 and cyclic shift 4. Or, for other comb teeth among the M comb teeth, there are also three corresponding cyclic shifts, and the values of these three cyclic shifts are equal to cyclic shift 0, cyclic shift 2 and cyclic shift 4 respectively.

Further, the R cyclic shifts corresponding to each of the M comb teeth can also be different and satisfy a predetermined relationship, for example: the R cyclic shifts corresponding to the comb teeth with the smallest number among the M comb teeth are cyclic shifts Shift A, cyclic shift B, ..., cyclic shift R, then the R cyclic shifts corresponding to the comb teeth with the second smallest number among the M comb teeth are cyclic shift A+1, cyclic shift B+1, ..., cyclic shift R+1, R cyclic shifts corresponding to other comb teeth, and so on.

The cyclic shift indication information may be included in the SRS resource configuration indicated by the first signaling and be indicated by the network device to the terminal device, or may be indicated by the network device to the terminal device through other signaling.

为6、

个循环移位中循环移位0的值为0、循环移位1的值为π/3、循环移位2的值为2π/3、循环移位3的值为π、循环移位4的值为4π/3、循环移位5的值为5π/3。具体而言，网络设备可以通过指示信息指示M个梳齿中的第一梳齿，例如梳齿1，并且预先定义了M个梳齿中每个梳齿之间的间隔为1，因此，终端设备可以根据第一梳齿梳齿1、M的数值，以及M个梳齿之间的间隔而确定M个梳齿分别为梳齿1和梳齿2。或者，网络设备可以通过指示信息直接将M个梳齿分别为梳齿1和梳齿2指示给终端设备。 Take the transmission comb value K _TC of the SRS as 8, the number of antenna ports X as 4, and the determined number of combs M as 2 as an example. The network device can indicate M comb teeth as comb teeth 1 and comb teeth 2, and the maximum number of cyclic shifts

for 6,

In the cyclic shift, the value of cyclic shift 0 is 0, the value of cyclic shift 1 is π/3, the value of cyclic shift 2 is 2π/3, the value of cyclic shift 3 is π, and the value of cyclic shift 4 The value is 4π/3, and the value of cyclic shift 5 is 5π/3. Specifically, the network device may indicate the first comb among the M combs, such as comb 1, through the indication information, and the interval between each of the M combs is predefined as 1. Therefore, the terminal The device can determine the M comb teeth as comb teeth 1 and comb teeth 2 according to the values of comb teeth 1 and M of the first comb teeth, and the interval between the M comb teeth. Alternatively, the network device may directly indicate the M comb teeth as comb tooth 1 and comb tooth 2 to the terminal device through indication information.

的数值可知X和

的最大公因子R为2，在M个梳齿中每个梳齿可以对应2个天线端口。如图12所示，当M个梳齿中每个梳齿上对应的循环移位相同时，循环移位指示信息可以仅指示多个循环移位中的首个循环移位，并且预先定义了多个循环移位之间的间隔，终端设备可以根据首个循环移位以及循环移位之间的间隔确定每个梳齿上的每个循环移位。或者，可以仅指示多个循环移位中的首个循环移位，并且预先定义了多个循环移位之间是等间隔的循环移位，终端设备可以根据首个循环移位，每个梳齿上的循环移位的个数以及等间隔分布的信息确定在每个梳齿上的每个循环移位间隔。例如，网络设备通过循环移位指示信息指示循环移位0，

个循环移位中包括循环移位0的满足值不同、且等间隔的R个循环移位为循环移位0和循环移位3，终端设备确定梳齿1和梳齿2对应的R个循环移位均为循环移位0和循环移位3。 According to X and

The values of X and

The greatest common factor R of is 2, and each of the M combs can correspond to 2 antenna ports. As shown in Figure 12, when the corresponding cyclic shifts on each of the M combs are the same, the cyclic shift indication information may only indicate the first cyclic shift among the multiple cyclic shifts, and the predefined For the interval between multiple cyclic shifts, the terminal device can determine each cyclic shift on each comb tooth according to the first cyclic shift and the interval between cyclic shifts. Alternatively, only the first cyclic shift among the multiple cyclic shifts may be indicated, and cyclic shifts at equal intervals between the multiple cyclic shifts are predefined, and the terminal device may set each comb according to the first cyclic shift The number of cyclic shifts on the teeth and the information distributed at equal intervals determine each cyclic shift interval on each comb tooth. For example, the network device indicates that the cyclic shift is 0 through the cyclic shift indication information,

Among the cyclic shifts, R cyclic shifts with different satisfying values including cyclic shift 0 and equal intervals are cyclic shift 0 and cyclic shift 3, and the terminal device determines the R cycles corresponding to comb tooth 1 and comb tooth 2 The shifts are both cyclic shift 0 and cyclic shift 3.

为6、

个循环移位中循环移位0的值为0、循环移位1的值为π/3、循环移位2的值为2π/3、循环移位3的值为π、循环移位4的值为4π/3、循环移位5的值为5π/3。X和

的最大公因子R仍为2，在M个梳齿中每个梳齿可以对应2个天线端口。如图13所示，当M个梳齿中每个梳齿上对应的循环移位不同时，网络设备可以通过循环移位指示信息指示循环移位0和循环移位1，并且预先定义了指示的每个循环移位与M个梳齿的对应关系，例如：编号最小的循环移位对应M个梳齿中编号最小的梳齿、编号次小的循环移位对应M个梳齿中编号次小的梳齿、其它循环移位对应的梳齿以此类推。终端设备可以根据循环移位指示信息所指示的循环移位确定每个梳齿对应的首个循环移位，并进一步根据首个循环移位确定每个梳齿上的循环移位，确定方法与上述示例相同，此处不再赘述。例如：

个循环移位中包括循环移位0的满足值不同、且等间隔的R个循环移位为循环移位0和循环移位3，

个循环移位中包括循环移位1的满足值不同、且等间隔的R个循环移位为循环移位1和循环移位4，终端设备确定梳齿1对应的R个循环移位为循环移位0和循环移位3、梳齿2对应的R个循环移位为循环移位1和循环移位4。当M个梳齿中每个梳齿上对应的循环移位不同时，作为一种可选的实施方式，网络设备可以通过循环移位指示信息仅仅指示一个循环移位，例如仅仅指示循环移位0，并且预先定义了多个梳齿所对应的首个循环移位之间的间隔。终端设备可以根据循环移位指示信息所指示的循环移位确定M个梳齿中，编号最小的梳齿所对应的首个循环移位为循环移位0，并且根据预定义的多个梳齿所对应 的首个循环移位之间的间隔确定其他梳齿所对应的首个循环移位，进而再根据首个循环移位确定每个梳齿上的每个循环移位。举例而言，M个梳齿为梳齿1和梳齿2，每个梳齿上的循环移位的个数R为3个，最大循环移位数

为12。预先定义了梳齿1和梳齿2之间的首个循环移位之间的间隔为2，并且每个梳齿上的循环移位等间隔分布。网络设备向终端设备指示循环移位0，那么终端设备能够确定梳齿1所对应的首个循环移位为循环移位0，由于梳齿1和梳齿2之间的首个循环移位之间的间隔为2，因此，梳齿2所对应的循环移位为循环移位2。进一步的，对于梳齿1，由于梳齿1上的每个循环移位是等间隔分布的，因此，能够确定梳齿1所对应的循环移位分别为循环移位0、循环移位4和循环移位8。同样的，对于梳齿2，能够确定梳齿2所对应的循环移位分别为循环移位2、循环移位6和循环移位10。 Still taking the transmission comb value K _TC of the SRS as 8, the number of antenna ports X as 4, and the determined number of combs M as 2 as an example. The network device indicates that the M comb teeth are comb teeth 1 and comb teeth 2, and the maximum number of cyclic shifts

for 6,

In the cyclic shift, the value of cyclic shift 0 is 0, the value of cyclic shift 1 is π/3, the value of cyclic shift 2 is 2π/3, the value of cyclic shift 3 is π, and the value of cyclic shift 4 The value is 4π/3, and the value of cyclic shift 5 is 5π/3. X and

The greatest common factor R of is still 2, and each of the M combs can correspond to 2 antenna ports. As shown in Figure 13, when the corresponding cyclic shifts on each of the M combs are different, the network device can indicate the cyclic shift 0 and the cyclic shift 1 through the cyclic shift indication information, and predefine the indication The corresponding relationship between each cyclic shift and M comb teeth, for example: the cyclic shift with the smallest number corresponds to the comb tooth with the smallest number among the M comb teeth, and the cyclic shift with the second smallest number corresponds to the second numbered comb tooth among the M comb teeth. Small comb teeth, comb teeth corresponding to other cyclic shifts, and so on. The terminal device can determine the first cyclic shift corresponding to each comb tooth according to the cyclic shift indicated by the cyclic shift indication information, and further determine the cyclic shift on each comb tooth according to the first cyclic shift. The determination method is the same as The above examples are the same and will not be repeated here. For example:

Among the cyclic shifts, R cyclic shifts with different satisfying values including cyclic shift 0 and equal intervals are cyclic shift 0 and cyclic shift 3,

Among the cyclic shifts, R cyclic shifts with different satisfying values including cyclic shift 1 and equal intervals are cyclic shift 1 and cyclic shift 4, and the terminal device determines that the R cyclic shifts corresponding to comb tooth 1 are cyclic The R cyclic shifts corresponding to shift 0, cyclic shift 3, and comb tooth 2 are cyclic shift 1 and cyclic shift 4. When the corresponding cyclic shift on each of the M combs is different, as an optional implementation, the network device can indicate only one cyclic shift through the cyclic shift indication information, for example, only indicate the cyclic shift 0, and the interval between the first cyclic shifts corresponding to multiple comb teeth is predefined. The terminal device can determine the first cyclic shift corresponding to the comb tooth with the smallest number among the M comb teeth according to the cyclic shift indicated by the cyclic shift indication information as the cyclic shift 0, and according to the predefined number of comb teeth The intervals between the corresponding first cyclic shifts determine the first cyclic shifts corresponding to other comb teeth, and then determine each cyclic shift on each comb tooth according to the first cyclic shifts. For example, M comb teeth are comb teeth 1 and comb teeth 2, the number R of cyclic shifts on each comb tooth is 3, and the maximum number of cyclic shifts

for 12. The interval between the first cyclic shifts between comb tooth 1 and comb tooth 2 is predefined as 2, and the cyclic shifts on each comb tooth are equally spaced. The network device indicates cyclic shift 0 to the terminal device, then the terminal device can determine that the first cyclic shift corresponding to comb tooth 1 is cyclic shift 0, because the difference between the first cyclic shift between comb tooth 1 and comb tooth 2 The interval between them is 2, therefore, the cyclic shift corresponding to comb tooth 2 is cyclic shift 2. Further, for comb tooth 1, since each cyclic shift on comb tooth 1 is distributed at equal intervals, it can be determined that the cyclic shifts corresponding to comb tooth 1 are cyclic shift 0, cyclic shift 4 and Rotate by 8. Similarly, for the comb tooth 2, it can be determined that the cyclic shifts corresponding to the comb tooth 2 are cyclic shift 2, cyclic shift 6, and cyclic shift 10, respectively.

Among them, a rectangular grid in Figure 12 and Figure 13 represents one RE, and multiple REs are divided into comb teeth 0 numbered 0 (comb tooth 0 is composed of all REs numbered 0 in Figure 12 or Figure 13), numbered Comb tooth 1 is 1 (comb tooth 1 is composed of all REs numbered 1 in Figure 12 or 13), comb tooth 2 is numbered 2 (comb tooth 2 is composed of all REs numbered 2 in Figure 12 or 13 Composition) and comb tooth 3 numbered 3 (comb tooth 3 is composed of all RE numbered 3 in Figure 12 or Figure 13), comb tooth 4 numbered 4 (comb tooth 4 is composed of all numbered REs in Figure 12 or Figure 13 4), comb teeth 5 numbered 5 (comb teeth 5 consist of all REs numbered 5 in Figure 12 or Figure 13), comb teeth 6 numbered 6 (comb teeth 6 are formed by Figure 12 or All REs numbered 6 in 13) and comb teeth 7 numbered 7 (comb teeth 7 are composed of all REs numbered 7 in Figure 12 or Figure 13).

After the terminal device determines the R cyclic shifts corresponding to each of the M combs, it can generate the R antennas corresponding to each comb according to the base sequence and the R cyclic shifts corresponding to each comb. The port generates R SRS sequences. And for each comb, the corresponding R SRS sequences are mapped to the comb, and the SRS is sent, and the network device can receive the SRS sent by the terminal device on the corresponding comb.

In this way, the R antenna ports occupying the same comb among the X antenna ports are code-division orthogonal, and since the corresponding R cyclic shifts are equally spaced, better orthogonality can be ensured, while occupying different combs The antenna ports of the teeth are frequency-division orthogonal, which can also ensure better orthogonality.

It can be understood that, in order to implement the functions in the foregoing embodiments, the network device and the terminal device include hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software with reference to the units and method steps of the examples described in the embodiments disclosed in the present application. Whether a certain function is executed by hardware or computer software drives the hardware depends on the specific application scenario and design constraints of the technical solution.

FIG. 14 and FIG. 15 are schematic structural diagrams of possible communication devices provided by the embodiments of the present application. These communication apparatuses may be used to realize the functions of the terminal device or the network device in the foregoing method embodiments, and thus also realize the beneficial effects of the foregoing method embodiments. In this embodiment of the application, the communication device may be one of the terminal devices 120a-120j as shown in FIG. 1, or it may be the network device 110a or 110b as shown in FIG. 1, or it may be a terminal device Or a module (such as a chip) of a network device.

As shown in FIG. 14 , a communication device 1400 includes a processing unit 1410 and a transceiver unit 1420 . The communication apparatus 1400 is configured to realize the functions of the terminal device or the network device in the method embodiment shown in FIG. 5 or FIG. 7 above.

When the communication device 1400 is used to implement the functions of the terminal device in the method embodiment shown in FIG. 5:

所述X、 所述

是正整数； A processing unit 1410, configured to determine the number X of antenna ports and the maximum number of cyclic shifts of the reference signal

The X, the

is a positive integer;

整除，所述X个循环移位为

个循环移位中值不同且不等间隔的循环移位。 The transceiver unit 1420 is configured to send the reference signal on the same time-frequency resource, the reference signal is generated according to X cyclic shifts, wherein the X cannot be determined by the

divisible, the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts.

个循环移位{循环移位0，循环移位1，…，循环移位

}中除去{循环移位i，循环移位

循环移位

…，循环移位

}外的循环移位，其中，所述循环移位0，循环移位1，…，循环移位

是

个按照从小到大顺序排序、且等间隔的循环移位，所述i是大于或等于0且小于

的任意一个整数。 In a possible design, the X cyclic shifts are the

Rotate {Rotate 0, Rotate 1, ..., Rotate

} remove {circular shift i, cyclic shift

cyclic shift

..., cyclic shift

} outside the cyclic shift, wherein, the cyclic shift 0, cyclic shift 1, ..., cyclic shift

yes

Circular shifts sorted from small to large and equally spaced, the i is greater than or equal to 0 and less than

any integer of .

为6、所述X为4时，所述X个循环移位包括所述

个循环移位中以下中的一项；循环移位1、循环移位2、循环移位4、循环移位5；或，循环移位0、循环移位2、循环移位3、循环移位5；或，循环移位0、循环移位1、循环移位3、循环移位4。 In one possible design, when the

is 6, and when the X is 4, the X cyclic shifts include the

One of the following cyclic shifts; cyclic shift 1, cyclic shift 2, cyclic shift 4, cyclic shift 5; or, cyclic shift 0, cyclic shift 2, cyclic shift 3, cyclic shift Bit 5; or, Rotate 0, Rotate 1, Rotate 3, Rotate 4.

In a possible design, the i is indicated by a network device.

个循环移位中的所述X个循环移位可选的，所述指示信息可以是位图或索引号；其中，所述位图用于指示所述

个循环移位中所述X个循环移位的分布；所述索引号用于指示多个循环移位集合中的一个，其中每个循环移位集合由

个循环移位中的至少一个循环移位组成，所述索引号所指示的循环移位集合由所述X个循环移位组成。 In a possible design, the X cyclic shifts are indicated by indication information from the network device, where the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts are optional, and the indication information can be a bitmap or an index number; wherein, the bitmap is used to indicate the

The distribution of the X cyclic shifts in the cyclic shifts; the index number is used to indicate one of a plurality of cyclic shift sets, wherein each cyclic shift set consists of

The set of cyclic shifts indicated by the index number is composed of the X cyclic shifts.

In a possible design, the processing unit 1410 is further configured to generate X reference signal sequences according to the X cyclic shifts before the transceiver unit 1420 sends the reference signal on the same time-frequency resource ; Generate the reference signal according to the X reference signal sequences.

When the communication device 1400 is used to implement the functions of the terminal device in the method embodiment shown in FIG. 7:

的最大公因子R确定，所述X为所述参考信号的天线端口数、所述

为一个梳齿上的最大循环移位数，所述X、所述

是正整数、所述M是大于1的整数； A processing unit 1410, configured to determine the number M of comb teeth used to send the reference signal, where M is determined by X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum cyclic shift number on a comb, the X, the

is a positive integer, and the M is an integer greater than 1;

The transceiver unit 1420 is configured to send the reference signal on the M comb teeth.

的最大公因子R确定，包括：所述M等于所述X除以所述R的值。 In one possible design, the M consists of X and

The determination of the greatest common factor R includes: said M is equal to the value of said X divided by said R.

个循环移位中的值不同且等间隔的循环移位，所述梳齿上发送的参考信号是根据所述R个循环移位生成的。 In a possible design, each of the M combs corresponds to R antenna ports, where the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts are

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts.

In a possible design, the M comb teeth are continuous, or the M comb teeth are equally spaced.

When the communication device 1400 is used to realize the function of the network device in the method embodiment shown in FIG. 5:

A transceiver unit 1420, configured to receive a reference signal including X antenna ports on the same time-frequency resource;

整除，所述

为所述参考信号的最大循环移位数，所述X个循环移位为

个循环移位中值不同且不 等间隔的循环移位。 The processing unit 1410 is configured to perform channel estimation according to the reference signal and X reference signal sequences, the X reference signal sequences are generated according to X cyclic shifts, wherein the X cannot be

divisible, the

is the maximum cyclic shift number of the reference signal, and the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts.

个循环移位{循环移位0，循环移位1，…，循环移位

}中除去{循环移位i，循环移位

循环移位

…，循环移位

}外的循环移位，其中，所述循环移位0，循环移位1，…，循环移位

是

个按照从小到大顺序排序、且等间隔的循环移位，所述i是大于或等于0且小于

的整数。 In a possible design, the X cyclic shifts are the

Rotate {Rotate 0, Rotate 1, ..., Rotate

} remove {circular shift i, cyclic shift

cyclic shift

..., circular shift

} outside the cyclic shift, wherein, the cyclic shift 0, cyclic shift 1, ..., cyclic shift

yes

Circular shifts sorted from small to large and equally spaced, the i is greater than or equal to 0 and less than

an integer of .

为6、所述X为4时，所述X个循环移位包括

个循环移位中以下中的一项；循环移位1、循环移位2、循环移位4、循环移位5；或，循环移位0、循环移位2、循环移位3、循环移位5；或，循环移位0、循环移位1、循环移位3、循环移位4。 In one possible design, when the

is 6, and when the X is 4, the X cyclic shifts include

One of the following cyclic shifts; cyclic shift 1, cyclic shift 2, cyclic shift 4, cyclic shift 5; or, cyclic shift 0, cyclic shift 2, cyclic shift 3, cyclic shift Bit 5; or, Rotate 0, Rotate 1, Rotate 3, Rotate 4.

In a possible design, the transceiving unit 1420 is further configured to indicate the i to the terminal device sending the reference signal.

个循环移位中的所述X个循环移位。可选的，所述指示信息可以是位图或索引号；其中，所述位图用于指示所述

个循环移位中所述X个循环移位的分布；所述索引号用于指示多个循环移位集合中的一个，其中每个循环移位集合由

个循环移位中的至少一个循环移位组成，所述索引号所指示的循环移位集合由所述X个循环移位组成。 In a possible design, the X cyclic shifts are indicated by indication information, where the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts. Optionally, the indication information may be a bitmap or an index number; wherein, the bitmap is used to indicate the

The distribution of the X cyclic shifts in the cyclic shifts; the index number is used to indicate one of a plurality of cyclic shift sets, wherein each cyclic shift set consists of

The set of cyclic shifts indicated by the index number is composed of the X cyclic shifts.

In a possible design, the transceiving unit 1420 is further configured to send the indication information to the terminal device that sends the reference signal.

When the communication device 1400 is used to realize the function of the network device in the method embodiment shown in FIG. 7:

的最大公因子R确定，所述X为参考信号的天线端口数、所述

为一个梳齿上的最大循环移位数，所述X、所述

是正整数、所述M是大于1的整数； A processing unit 1410, configured to determine the number M of comb teeth, said M consisting of X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum cyclic shift number on a comb, the X, the

is a positive integer, and the M is an integer greater than 1;

The transceiver unit 1420 is configured to receive the reference signal on the M comb teeth.

的最大公因子R确定，包括：所述M等于所述X除以所述R的值。 In one possible design, the M consists of X and

The determination of the greatest common factor R includes: said M is equal to the value of said X divided by said R.

个循环移位中的值不同且等间隔的循环移位，所述梳齿上发送的参考信号是根据所述R个循环移位生成的。 In a possible design, each of the M combs corresponds to R antenna ports, where the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts are

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts.

In a possible design, the M comb teeth are continuous, or the M comb teeth are equally spaced.

In a possible design, the transceiving unit 1420 is further configured to indicate the M to a terminal device sending the reference signal.

More detailed descriptions about the processing unit 1410 and the transceiver unit 1420 can be directly obtained by referring to the relevant descriptions in the method embodiment shown in FIG. 5 or FIG. 7 , and will not be repeated here.

As shown in FIG. 15 , a communication device 1500 includes a processor 1510 and an interface circuit 1520 . The processor 1510 and the interface circuit 1520 are coupled to each other. It can be understood that the interface circuit 1520 may be a transceiver or an input/output interface. Optionally, the communication device 1500 may further include a memory 1530 for storing instructions executed by the processor 1510 or storing input data required by the processor 1510 to execute the instructions or storing data generated by the processor 1510 after executing the instructions.

When the communication device 1500 is used to implement the method shown in FIG. 5 or FIG. 7 , the processor 1510 is used to implement the functions of the processing unit 1410, and the interface circuit 1520 is used to implement the functions of the transceiver unit 1420.

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information from other modules in the terminal device (such as radio frequency modules or antennas), and the information is sent to the terminal device by the network device; or, the terminal device chip sends information to other modules in the terminal device (such as radio frequency modules or antenna) to send information, which is sent by the terminal device to the network device.

When the above communication device is a module applied to network equipment, the network equipment module implements the functions of the network equipment in the above method embodiments. The network equipment module receives information from other modules in the network equipment (such as radio frequency modules or antennas), and the information is sent to the network equipment by the terminal equipment; or, the network equipment module sends information to other modules in the network equipment (such as radio frequency modules or antenna) to send information, which is sent by the network device to the terminal device. The network device module here may be a baseband chip of the network device, or a DU or other modules, and the DU here may be a DU under an open radio access network (O-RAN) architecture.

It can be understood that the processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), 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. A general-purpose processor can be a microprocessor, or any conventional processor.

The method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only Memory, registers, hard disk, removable hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and storage medium can be located in the ASIC. In addition, the ASIC can be located in a network device or a terminal device. Certainly, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer program or instructions can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions can be downloaded from a website, computer, A server or data center transmits to another website site, computer, server or data center by wired or wireless means. 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 a data center integrating one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disk; or it may be a semiconductor medium, such as a solid-state hard disk. The computer readable storage medium may be a volatile or a nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In addition, it should be understood that in the embodiments of the present application, the word "exemplary" is used as an example, illustration or explanation. Any embodiment or design described herein as "example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present concepts in a concrete manner.

In addition, in this embodiment of the application, information, signal (signal), message (message), and channel (channel) can sometimes be used interchangeably. It should be noted that when the differences are not emphasized, the meanings they want to express are consistent of. "的(of)", "corresponding (corresponding, relevant)" and "corresponding (corresponding)" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meanings they intend to express are consistent.

The terms "comprising" and "having" in the embodiments of the present application, claims and drawings are not exclusive. For example, a process, method, system, product or device including a series of steps or modules is not limited to the listed steps or modules, and may also include unlisted steps or modules. The terms "system" and "network" are often used interchangeably herein. "At least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the contextual objects are an "or" relationship; in the formulas of this application, the character "/" indicates that the contextual objects are a "division" Relationship. "Including at least one of A, B and C" may mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

It can be understood that the various numbers involved in the embodiments of the present application are only for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial numbers of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic.

Claims (48)

A communication method, characterized in that, comprising: Determine the number M of the comb teeth used to send the reference signal, the M is determined by X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum cyclic shift number on a comb, the X, the

is a positive integer, and the M is an integer greater than 1; The reference signal is sent on M comb teeth. The method according to claim 1, wherein said M consists of X and

Determined by the greatest common factor R, including: The M is equal to the value of dividing the X by the R. The method according to claim 1 or 2, wherein each of the M combs corresponds to R antenna ports, wherein the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts shifted to

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts. The method according to any one of claims 1-3, characterized in that, the M comb teeth are continuous, or the M comb teeth are equally spaced. A communication method, characterized in that, comprising: Determine the number of antenna ports X and the maximum number of cyclic shifts for the reference signal

The X, the

is a positive integer; Send the reference signal on the same time-frequency resource, the reference signal is generated according to X cyclic shifts, where the X cannot be determined by the

divisible, the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts. The method according to claim 5, wherein the X cyclic shifts are the

cyclic shift

remove

outside the cyclic shift, where the

yes

Circular shifts sorted in ascending order and equally spaced, the i is greater than or equal to 0 and less than

any integer of . The method according to claim 5 or 6, wherein when said

is 6, and when the X is 4, the X cyclic shifts include the

One of the following cyclic shifts; Rotate 1, Rotate 2, Rotate 4, Rotate 5; or, Rotate 0, Rotate 2, Rotate 3, Rotate 5; or, Rotate 0, rotate 1, rotate 3, rotate 4. The method according to claim 6, wherein said i is indicated by a network device. The method according to any one of claims 5-8, wherein the X cyclic shifts are indicated by indication information from a network device, wherein the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts. The method according to any one of claims 5-9, wherein before sending the reference signal on the same time-frequency resource, the method further comprises: generating X reference signal sequences according to the X cyclic shifts; Generate the reference signal according to the X reference signal sequences. A communication method, characterized in that, comprising: Determine the number M of comb teeth, said M consists of X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum number of cyclic shifts on a comb, the X, the

is a positive integer, and the M is an integer greater than 1; The reference signal is received on M comb teeth. The method of claim 11, wherein said M consists of X and

Determined by the greatest common factor R, including: The M is equal to the value of dividing the X by the R. The method according to claim 11 or 12, wherein each of the M combs corresponds to R antenna ports, wherein the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts shifted to

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts. The method according to any one of claims 11-13, characterized in that, the M comb teeth are continuous, or the M comb teeth are equally spaced. A communication method, characterized in that, comprising: Receive reference signals including X antenna ports on the same time-frequency resource; Perform channel estimation according to the reference signal and X reference signal sequences, the X reference signal sequences are generated according to X cyclic shifts, wherein the X cannot be determined by

divisible, the

is the maximum cyclic shift number of the reference signal, and the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts. The method according to claim 15, wherein the X cyclic shifts are the

cyclic shift

remove

outside the cyclic shift, where the

yes

Circular shifts sorted from small to large and equally spaced, the i is greater than or equal to 0 and less than

an integer of . The method according to claim 15 or 16, wherein when said

is 6, and when the X is 4, the X cyclic shifts include

One of the following cyclic shifts; Rotate 1, Rotate 2, Rotate 4, Rotate 5; or, Rotate 0, Rotate 2, Rotate 3, Rotate 5; or, Rotate 0, rotate 1, rotate 3, rotate 4. The method of claim 16, further comprising: indicating the i to the terminal device sending the reference signal. The method according to any one of claims 15-18, wherein the X cyclic shifts are indicated by indication information, wherein the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts. The method of claim 19, further comprising: Send the indication information to the terminal device that sends the reference signal. A communication device, characterized by comprising a transceiver unit and a processing unit; The processing unit is configured to determine the number M of comb teeth used to send the reference signal, and the M is determined by X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum number of cyclic shifts on a comb, the X, the

is a positive integer, and the M is an integer greater than 1; The transceiver unit is configured to send the reference signal on M comb teeth. The apparatus of claim 21, wherein said M is equal to said X divided by said R value. The device according to claim 21 or 22, wherein each of the M combs corresponds to R antenna ports, wherein the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts shifted to

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts. The device according to any one of claims 21-23, characterized in that, the M comb teeth are continuous, or the M comb teeth are equally spaced. A communication device, characterized by comprising a transceiver unit and a processing unit; The processing unit is configured to determine the number X of antenna ports and the maximum number of cyclic shifts of the reference signal

The X, the

is a positive integer; The transceiver unit is configured to send the reference signal on the same time-frequency resource, the reference signal is generated according to X cyclic shifts, wherein the X cannot be determined by the

divisible, the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts. The apparatus according to claim 25, wherein the X cyclic shifts are the

cyclic shift

remove

outside the cyclic shift, where the

yes

Circular shifts sorted from small to large and equally spaced, the i is greater than or equal to 0 and less than

any integer of . The device according to claim 25 or 26, wherein when said

is 6, and when the X is 4, the X cyclic shifts include the

One of the following cyclic shifts; Rotate 1, Rotate 2, Rotate 4, Rotate 5; or, Rotate 0, Rotate 2, Rotate 3, Rotate 5; or, Rotate 0, rotate 1, rotate 3, rotate 4. The apparatus of claim 26, wherein said i is indicated by a network device. The apparatus according to any one of claims 25-28, wherein the X cyclic shifts are indicated by indication information from a network device, wherein the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts. The device according to any one of claims 25-29, wherein the processing unit is further configured to, before the transceiver unit transmits the reference signal on the same time-frequency resource, according to the X Generate X reference signal sequences by cyclic shifting; generate the reference signal according to the X reference signal sequences. A communication device, characterized by comprising a transceiver unit and a processing unit; The processing unit is used to determine the number M of comb teeth, and the M is composed of X and

Determined by the greatest common factor R, the X is the number of antenna ports of the reference signal, the

is the maximum number of cyclic shifts on a comb, the X, the

is a positive integer, and the M is an integer greater than 1; The transceiver unit is configured to receive the reference signal on the M comb teeth. 31. The apparatus of claim 31 wherein said M is equal to said X divided by said R. The device according to claim 31 or 32, wherein each of the M combs corresponds to R antenna ports, wherein the R antenna ports correspond to R cyclic shifts, and the R cyclic shifts shifted to

The values in the R cyclic shifts are different and equally spaced cyclic shifts, and the reference signal sent on the comb teeth is generated according to the R cyclic shifts. The device according to any one of claims 31-33, characterized in that, the M comb teeth are continuous, or the M comb teeth are equally spaced. A communication device, characterized by comprising a transceiver unit and a processing unit; The transceiver unit is configured to receive a reference signal including X antenna ports on the same time-frequency resource; The processing unit is configured to perform channel estimation according to the reference signal and X reference signal sequences, the X reference signal sequences are generated according to X cyclic shifts, wherein the X cannot be

divisible, the

is the maximum cyclic shift number of the reference signal, and the X cyclic shifts are

The cyclic shifts with different values and unequal intervals among the cyclic shifts. The apparatus according to claim 35, wherein the X cyclic shifts are the

cyclic shift

remove

outside the cyclic shift, where the

yes

Circular shifts sorted from small to large and equally spaced, the i is greater than or equal to 0 and less than

an integer of . Apparatus as claimed in claim 35 or 36, characterized in that when said

is 6, and when the X is 4, the X cyclic shifts include

One of the following cyclic shifts; Rotate 1, Rotate 2, Rotate 4, Rotate 5; or, Rotate 0, Rotate 2, Rotate 3, Rotate 5; or, Rotate 0, rotate 1, rotate 3, rotate 4. The apparatus according to claim 36, wherein the transceiving unit is further configured to indicate the i to a terminal device sending the reference signal. The device according to any one of claims 35-38, wherein the X cyclic shifts are indicated by indication information, wherein the indication information is used to indicate the

The X cyclic shifts in the cyclic shifts. The apparatus according to claim 39, wherein the transceiving unit is further configured to send the indication information to a terminal device that sends the reference signal. A communications device, characterized by comprising a processor configured to execute the method according to any one of claims 1-10. A communications device, characterized by comprising a processor configured to execute the method according to any one of claims 11-20. A communications device, characterized by comprising a processor configured to execute instructions stored in a memory, so that the method according to any one of claims 1-10 is implemented. A communications device, characterized by comprising a processor configured to execute instructions stored in a memory, so that the method according to any one of claims 11-20 is implemented. A computer program product, characterized by comprising program code, when the program code is executed, the method according to any one of claims 1-10 is realized. A computer program product, characterized by comprising program code, when the program code is executed, the method according to any one of claims 11-20 is realized. A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, the implementation of any one of claims 1-10 Methods. A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, the implementation of any one of claims 11-20 Methods.

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