Communication method and communication apparatus

Abstract

Provided in the present application are a communication method and a communication apparatus. The method comprises: a terminal device receiving configuration information, and sending a reference signal on the basis of the configuration information. The configuration information is used for determining a frequency-domain bandwidth X1 for transmitting a reference signal N times, and a frequency-domain bandwidth X2 for transmitting the reference signal a single time, where X1, X2 and N are all integers greater than 1, and X2*N＝X1. By determining two-stage frequency-domain bandwidths X1 and X2 for transmitting a reference signal, the method further reduces the bandwidth for transmitting the reference signal a single time by a terminal device, and increases the transmit power for sending the reference signal a single time by the terminal device, thereby improving the accuracy of channel measurement estimation based on the reference signal.

Description

Communication method and communication apparatus

[0001] This application claims priority to the Chinese Patent Application No. 202411098495.6, filed on August 9, 2024, and entitled "Communication method and communication apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of wireless communication, and more particularly, to a communication method and a communication apparatus. BACKGROUND

[0003] In wireless communication, in order to transmit and receive data, obtain system synchronization and feedback channel information, etc., a reference signal is transmitted between a sending end and a receiving end. For example, the sending end transmits a reference signal to the receiving end, and the receiving end receives the reference signal, and then can perform corresponding operations based on the reference information, such as performing channel measurement to obtain corresponding channel state information. Among them, the reference signal is divided into uplink reference signal and downlink reference signal.

[0004] Suppose the reference signal is an uplink reference signal, when the channel bandwidth that needs to be measured by the network device is large, the terminal device can transmit the uplink reference signal to the network device multiple times through frequency hopping. The terminal device transmits the uplink reference signal multiple times on multiple time domain symbols, and the uplink reference signal transmitted on each symbol occupies a part of the total bandwidth configured for the uplink reference signal. For example, the terminal device can transmit the uplink reference signal on 4 time domain symbols through frequency hopping, and the uplink reference signal occupies one fourth of the overall configured bandwidth on each symbol.

[0005] In existing protocols, considering that the uplink power of the terminal device is limited, the terminal device generally transmits the uplink reference signal to the network device multiple times through frequency hopping to improve the power spectrum density of the uplink reference signal by reducing the bandwidth of the uplink reference signal transmitted by the terminal device at a time. However, by reducing the bandwidth of the uplink reference signal transmitted by the terminal device at a time, the frequency domain noise reduction effect of the network device on channel estimation based on the uplink reference signal is affected, resulting in a decrease in the accuracy of the network device in measuring and estimating the channel based on the uplink reference signal. SUMMARY

[0006] The present application provides a communication method and a communication apparatus to improve the accuracy of channel estimation.

[0007] In a first aspect, a communication method is provided. The method can be performed by a terminal side, or can also be performed by other subjects, which are not limited in the present application. The terminal side includes a terminal device, or a functional module in the terminal device, a communication module, a chip, a chip system or a circuit (such as a modem chip, a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core), or a functional module capable of invoking and executing a program in the terminal device, etc. For ease of description, the following will be described by taking the terminal device as an example.

[0008] The method includes: receiving, by a terminal device, configuration information, the configuration information being used to determine a frequency hopping pattern of a reference signal, the frequency hopping pattern including a first-level frequency hopping pattern and a second-level frequency hopping pattern, the first-level frequency hopping pattern corresponding to a frequency domain bandwidth X1 of N times of transmission of the reference signal, the second-level frequency hopping pattern corresponding to a frequency domain bandwidth X2 of single transmission of the reference signal, wherein X1, X2 and N are all integers greater than 1, and X2*N = X1; and transmitting, by the terminal device, the reference signal according to the configuration information.

[0009] It should be understood that the N times of the reference signal can be regarded as reference signals belonging to the same group of transmission. The N times of the reference signal are transmitted in the same group, and the frequency domain bandwidth of the N times of the reference signal transmitted in the same group is X1. Alternatively, it can be understood that the first-level frequency hopping pattern can be used to determine the frequency domain bandwidth X1 of the N times of the reference signal transmitted in the same group, and the second-level frequency hopping pattern can be used to determine the frequency domain bandwidth X2 of the single transmission of the reference signal in the same group.

[0010] It should also be understood that the first-level frequency hopping pattern can correspond to one frequency hopping sub-band, for example, a first-level frequency hopping sub-band, and the first-level frequency hopping sub-band corresponds to the frequency domain bandwidth X1. The second-level frequency hopping pattern can correspond to one frequency hopping sub-band, for example, a second-level frequency hopping sub-band, and the second-level frequency hopping sub-band corresponds to the frequency domain bandwidth X2, and the N second-level frequency hopping sub-bands constitute the first-level frequency hopping sub-band. Alternatively, it can be understood that the first-level frequency hopping sub-band includes N second-level frequency hopping sub-bands.

[0011] It should also be understood that the frequency hopping pattern in the present application can also be referred to as a frequency hopping pattern, the first-level frequency hopping pattern can be referred to as a first-level frequency hopping pattern, and the second-level frequency hopping pattern can be referred to as a second-level frequency hopping pattern.

[0012] According to the method provided in the application, the terminal device determines the first-level frequency hopping pattern and the second-level frequency hopping pattern of the transmission reference signal through configuration information. In the method, by defining the first-level frequency hopping pattern and the second-level frequency hopping pattern, the bandwidth of the terminal device for transmitting the reference signal at a time is further reduced, the transmission power of the terminal device for transmitting the reference signal at a time is improved, and the accuracy of the estimation of the channel measurement based on the reference signal is improved.

[0013] In combination with the first aspect, in some possible implementation manners, the frequency domain resources occupied by the N times of the transmission reference signal are continuous, the frequency domain starting positions between the first-level frequency hopping patterns are different, and in the case that the first-level frequency hopping patterns are continuous in the time domain resources, the frequency domain intervals between the frequency domain starting positions are greater than the frequency domain bandwidth X1.

[0014] It should be understood that the frequency domain resources occupied by the N times of the transmission reference signal are continuous, which means that the frequency domain resources occupied by the N times of the transmission reference signal are continuous in the order of the time domain resources; or the frequency domain resources occupied by the N times of the transmission reference signal are discontinuous in the order of the time domain resources, and the frequency domain resources occupied by the N times of the transmission reference signal are combined to occupy the frequency domain bandwidth X1.

[0015] It should also be understood that the N times of the reference signal can occupy the same frequency domain starting position and different frequency domain offset positions; or the N times of the reference signal can occupy different frequency domain starting positions and the same frequency domain offset position.

[0016] In combination with the first aspect, in some possible implementation manners, the first-level frequency hopping pattern is determined based on one or more of the following information:

[0017] The value of the N, the counting rule of the transmission of the reference signal, the frequency domain bandwidth X1, or the frequency domain starting position of the transmission of the N times of the reference signal in the first-level frequency hopping pattern.

[0018] In combination with the first aspect, in some possible implementation manners, the value of the N is determined based on one or more of the following manners:

[0019] Manner 1: The value of the N is obtained from a protocol predefined value set of the N;

[0020] Manner 2: The value of the N is determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2;

[0021] Manner 3: The value of the N is determined based on the frequency domain bandwidth X1, the frequency domain bandwidth X2, and a frequency domain repetition factor R.

[0022] It should be understood that, in the case of implementation of the above-mentioned manner 1, the configuration information can include indication information for obtaining the value of N from the predefined set of values of N, and the terminal device can obtain the corresponding N from the predefined set of values of N through the indication information.

[0023] It should also be understood that the frequency domain bandwidth X1 and the frequency domain bandwidth X2 can be sent to the terminal device through the configuration information, and accordingly, the terminal device can determine the value of N based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2; or the frequency domain bandwidth X1, the frequency domain bandwidth X2 and the frequency domain repetition factor R can be sent to the terminal device through the configuration information, and accordingly, the terminal device can determine the value of N based on the frequency domain bandwidth X1, the frequency domain bandwidth X2 and the frequency domain repetition factor R; or the frequency domain bandwidth X1 and the frequency domain bandwidth X2 can be sent to the terminal device through the configuration information, and the terminal device is predefined or preconfigured with the frequency domain repetition factor, and accordingly, the terminal device can determine the value of N based on the frequency domain bandwidth X1, the frequency domain bandwidth X2 and the frequency domain repetition factor R. In combination with the first aspect, in some possible implementation manners, the counting rule of the transmitted N times of the reference signal is to jointly count the N times of the transmitted reference signal, and the joint counting refers to that the N times of the transmitted reference signal correspond to the same value of the transmission counter.

[0024] It should be understood that the N times of the transmitted reference signal correspond to the same count value in the transmission counter. Alternatively, it can be understood that the same group of N times of the transmitted reference signal corresponding to the first-level frequency hopping pattern correspond to the same count value in the transmission counter.

[0025] In a possible implementation manner, the value n of the transmission counter satisfies: SRS , and satisfies:

[0026] , or

[0027] , wherein, indicates the number of slots in a system frame, nf indicates the system frame number, indicates the slot number in a system frame, T offset indicates the slot offset value, T SRS indicates the slot period, l' indicates the symbol number, and R indicates the symbol repetition factor.

[0028] It should be understood that “·” or “*” in the formulas of the present application all represent “multiplication”, and “ / ” represents “division”.

[0029] In combination with the first aspect, in some possible implementation manners, in the case of a frequency domain bandwidth , the pilot sequence length corresponding to the single transmission of the reference signal satisfies: .

[0030] In the case of a frequency domain bandwidth , the pilot sequence length corresponding to the reference signal of a single transmission satisfies:

[0031] wherein m SRS,b represents the number of frequency domain resource blocks occupied by the reference signal of N times of transmission, represents the number of subcarriers corresponding to each frequency domain resource block, K TC represents the number of combs, P F represents a high-level parameter frequency domain spreading factor.

[0032] In combination with the first aspect, in some possible implementation manners, the configuration information comprises a first-level frequency domain position index n b1 corresponding to the first-level frequency hopping pattern, wherein the first-level frequency domain position index n b1 satisfies:

[0033] or,

[0034] wherein n RRC represents a frequency domain starting position index of the reference signal, m SRS,b represents the number of frequency domain resource blocks occupied by the reference signal of a single transmission, n SRS represents a value of a transmission counter corresponding to the reference signal, b hop represents a frequency hopping parameter.

[0035] In combination with the first aspect, in some possible implementation manners, the configuration information comprises a second-level frequency domain position index n b2 corresponding to the second-level frequency hopping pattern, wherein the second-level frequency domain position index n b2 is used to determine N frequency domain resource positions respectively occupied by N times of the reference signal of transmission.

[0036] In combination with the first aspect, in some possible implementation manners, the transmitting the reference signal according to the configuration information comprises:

[0037] based on the first-level frequency domain position index n b1 corresponding to the first-level frequency hopping pattern and the second-level frequency domain position index n b2 corresponding to the second-level frequency hopping pattern, obtaining an index n b (i,j) of a frequency domain resource position of the reference signal transmitted for the i-th time in the j-th group;

[0038] ​transmitting the reference signal at the frequency domain resource location,

[0039] wherein the index n b (i,j) satisfies:

[0040] n b (i,j) = n b1 *N + n b2 ;

[0041] or,

[0042] wherein the first level frequency domain location index n b1 satisfies:

[0043] or,

[0044] wherein the second level frequency domain location index n b2 is used to determine N frequency domain resource locations occupied by N transmissions of the reference signal respectively, the n RRC represents a frequency domain starting location index of the reference signal, m SRS,b represents a number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS represents a value of a transmission counter corresponding to the reference signal, b hop represents a frequency hopping parameter, the value of i is equal to the value of n SRS , the first level frequency hopping pattern has a same value of the transmission counter corresponding to N transmissions of the reference signal, the j represents any one of N transmissions of the reference signal in a same group corresponding to the i, the first level frequency domain location index n b1 is same for N transmissions of the reference signal in the same group, and the second level frequency domain location index n b2 is different for N transmissions of the reference signal in the same group.

[0045] It should be understood that the first level frequency domain location index can be understood as a frequency domain location index used to determine a group level (for example, N transmissions of the reference signal can be regarded as a same group), and the second level frequency domain location index can be understood as a specific frequency domain location index of each transmission of the reference signal in the N transmissions of the reference signal in the group. The first level frequency domain location index and the second level frequency domain location index can be used to determine a specific frequency domain resource location of each transmission of the reference signal in the N transmissions of the reference signal.

[0046] In combination with the first aspect, in some possible implementation manners, before transmitting the reference signal according to the configuration information, the method further includes:

[0047] jointly design a transmission sequence of the reference signals in the N times of transmission;

[0048] The transmitting the reference signals according to the configuration information comprises:

[0049] According to the configuration information, the N times of the reference signals are transmitted according to the transmission sequence of the reference signals in the N times of transmission which are jointly designed.

[0050] Based on the above technical solutions, the transmission sequence of the N times of the reference signals is jointly designed, so that the frequency domain noise reduction of the N times of the reference signals for channel estimation can be realized, and the channel estimation accuracy is further improved.

[0051] In combination with the first aspect, in some possible implementation manners, when the frequency domain resources between the reference signals are adjacent, the sequence of the reference signals is adjacent; or when the transmission counter values between the reference signals are adjacent, the sequence of the reference signals is adjacent.

[0052] In combination with the first aspect, in some possible implementation manners, the configuration information comprises a first parameter, and the first parameter comprises one or more of the following parameters: a frequency domain starting position, a frequency domain offset, a frequency hopping parameter, a transmission comb, a comb offset, or a frequency hopping pattern index.

[0053] It should be understood that the frequency domain starting position, the frequency domain offset, the frequency hopping parameter, the transmission comb, the comb offset, or the frequency hopping pattern index included in the first parameter can be used to determine at least one frequency hopping pattern in the first-level frequency hopping pattern and the second-level frequency hopping pattern. For examples of how to determine the frequency hopping pattern, please refer to the related description in the specific embodiments.

[0054] The second aspect provides a communication method. The method can be executed by a network side, or can also be executed by other subjects, which is not limited in the present application. The network side comprises a network device, or a functional module in the network device, a communication module chip, a chip system or a circuit, or a central unit (CU) or a distributed unit (DU) in the network device, or a functional module capable of calling and executing a program in the network device. For the convenience of description, the following will be described by taking the network device as an example.

[0055] The method comprises:

[0056] The network device determines configuration information, which is used to determine a first-level frequency hopping pattern and a second-level frequency hopping pattern of transmitting a reference signal, the first-level frequency hopping pattern corresponds to a frequency domain bandwidth X1 of transmitting N times of the reference signal, and the second-level frequency hopping pattern corresponds to a frequency domain bandwidth X2 of transmitting the reference signal once, where X1, X2, and N are all integers greater than 1, and X2*N = X1; and the network device transmits the configuration information.

[0057] It should be understood that the transmission referred to in the present application includes receiving and / or transmitting. The configuration information can be used by the terminal device to determine the specific position of transmitting the reference signal, and the configuration information can also be used by the network device to determine the specific position of receiving the reference signal from the terminal device.

[0058] It should also be understood that the second aspect corresponds to the first aspect, and the related description and technical effects can be referred to the description of the first aspect.

[0059] In combination with the second aspect, in some possible implementation manners, the frequency domain resources occupied by the N times of the reference signal are continuous, the frequency domain starting positions of the first-level frequency hopping patterns are different, and in the case that the first-level frequency hopping patterns are continuous in the time domain resources, the frequency domain intervals between the frequency domain starting positions are greater than the frequency domain bandwidth X1.

[0060] In combination with the second aspect, in some possible implementation manners, the first-level frequency hopping pattern is determined based on one or more of the following information:

[0061] The value of N, the counting rule of transmitting the reference signal, the frequency domain bandwidth X1, or the frequency domain starting position of transmitting the N times of the reference signal in the first-level frequency hopping pattern.

[0062] In combination with the second aspect, in some possible implementation manners, the value of N is determined based on one or more of the following manners:

[0063] Manner 1: The value of N is obtained from a protocol predefined set of values of N.

[0064] Manner 2: The value of N is determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2.

[0065] Manner 3: The value of N is determined based on the frequency domain bandwidth X1, the frequency domain bandwidth X2, and a frequency domain repetition factor R.

[0066] In combination with the second aspect, in some possible implementation manners, the counting rule of transmitting the reference signal is to jointly count the N times of the reference signal, and the joint counting refers to that the N times of the reference signal correspond to the same value of a transmission counter.

[0067] With reference to the second aspect, in some possible implementation manners,

[0068] the value n of the transmission counter SRS , satisfies:

[0069] or

[0070] wherein, denotes the number of slots within a system frame, nf denotes the system frame number, denotes the slot number within a system frame, T offset denotes the slot offset value, T SRS denotes the slot period, l' denotes the symbol number, and R denotes the symbol repetition factor.

[0071] With reference to the second aspect, in some possible implementation manners, in the case of a frequency domain bandwidth , the pilot sequence length corresponding to the reference signal of a single transmission satisfies:

[0072] in the case of a frequency domain bandwidth , the pilot sequence length corresponding to the reference signal of a single transmission satisfies:

[0073] wherein, m SRS,b denotes the number of frequency domain resource blocks occupied by the reference signal of the N transmissions, denotes the number of subcarriers corresponding to each frequency domain resource block, K TC denotes the number of combs, P F denotes a high-layer parameter frequency domain spreading factor.

[0074] With reference to the second aspect, in some possible implementation manners, the configuration information comprises a first-level frequency domain location index n b1 corresponding to the first-level frequency hopping pattern, the first-level frequency domain location index n b1 satisfies:

[0075] or

[0076] wherein, n RRC denotes the frequency domain starting location index of the reference signal, m SRS,b denotes the number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS denotes the value of the transmission counter corresponding to the reference signal, b hop denotes a frequency hopping parameter. ​​

[0077] In some possible implementation modes of the second aspect, the configuration information comprises a second-level frequency domain position index n b2 corresponding to the second frequency hopping pattern, wherein the second-level frequency domain position index n b2 is used to determine N frequency domain resource positions respectively occupied by N transmissions of the reference signal.

[0078] In some possible implementation modes of the second aspect, the first frequency hopping pattern corresponds to a first-level frequency domain position index n b , and the first-level frequency domain position index n b is used to determine a first frequency domain position, wherein the first frequency domain position refers to a frequency domain position of the first frequency hopping pattern used for transmitting the reference signal N times, and the first-level frequency domain position index n b satisfies:

[0079] wherein n RRC represents a frequency domain starting position index of the reference signal, m SRS,b represents a number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS represents a value of a transmission counter corresponding to the reference signal, b hop represents a frequency hopping parameter.

[0080] In some possible implementation modes of the second aspect, a first-level frequency domain position index n b1 corresponding to the first frequency hopping pattern and a second-level frequency domain position index n b2 corresponding to the second frequency hopping pattern are used to determine an index n b (i, j) of a frequency domain resource position of the reference signal in the i th group and the j th transmission, wherein the index n b (i, j) satisfies:

[0081] n b (i, j) = n b1 *N + n b2 ;

[0082] or,

[0083] wherein the first-level frequency domain position index n b1 satisfies:

[0084] or,

[0085] wherein the second-level frequency domain position index n b2 is used to determine N frequency domain resource positions respectively occupied by N transmissions of the reference signal, and the n RRC represents a frequency domain starting position index of the reference signal, mSRS,b denotes the number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS denotes the value of a transmission counter corresponding to the reference signal, b hop denotes a frequency hopping parameter, the value of i is equal to the value of n SRS , the value of the transmission counter corresponding to the N times of transmission of the reference signal in the same group is the same, j denotes any one of the N times of transmission of the reference signal in the same group corresponding to i, the first-level frequency domain position index n b1 corresponding to the N times of transmission of the reference signal in the same group is the same, the second-level frequency domain position index n b2 corresponding to the N times of transmission of the reference signal in the same group is different.

[0086] In combination with the second aspect, in some possible implementation manners, when the frequency domain resources between the reference signals are adjacent, the sequences of the reference signals are adjacent; or, when the values of the transmission counters between the reference signals are adjacent, the sequences of the reference signals are adjacent.

[0087] In combination with the second aspect, in some possible implementation manners, the configuration information includes one or more of the following parameters: a frequency domain starting position, a frequency domain offset, a frequency hopping parameter, a transmission comb, a comb offset, or a frequency hopping pattern index.

[0088] A third aspect provides a communication method. The method can be executed by a terminal side, or can also be executed by other subjects, which are not limited in the present application. Wherein, the terminal side includes a terminal device, or a chip, a chip system or a circuit (such as a modem chip, a base band chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core) in the terminal device, or a functional module capable of calling and executing programs in the terminal device, etc. For the convenience of description, the following will be described by taking the terminal device as an example.

[0089] The method includes: receiving configuration information, the configuration information being used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, the first frequency domain bandwidth X1 being used to transmit N times of reference signals, and the second frequency domain bandwidth X2 being used to transmit a single time of the reference signal, wherein X1, X2 and N are all integers greater than 1, and X2*N = X1; and transmitting the reference signal according to the configuration information.

[0090] According to the method provided in the application, the terminal device determines the first frequency domain bandwidth X1 and the second frequency domain bandwidth X2 of the transmission reference signal through the configuration information. In the method, by defining two levels of frequency domain bandwidth X1 and X2, the bandwidth of the terminal device for single transmission of the reference signal is further reduced, the transmission power of the terminal device for single transmission of the reference signal is improved, and the accuracy of the estimation of the channel measurement based on the reference signal is improved.

[0091] In combination with the third aspect, in some possible implementation manners, the configuration information further includes one or more of the following: the value of N, a frequency hopping parameter, a frequency hopping pattern index, a frequency domain starting position, a frequency domain offset, a transmission comb, or a comb offset.

[0092] In combination with the third aspect, in some possible implementation manners, the counting rule of the transmission of the reference signal is to jointly count the N times of the transmission of the reference signal, the joint counting refers to that the N times of the transmission of the reference signal correspond to the same value of a transmission counter, the value n of the transmission counter satisfies: SRS

[0093]

[0094] wherein, indicates the number of slots in a system frame, and nf indicates a system frame number, indicates the slot number in a system frame, T offset indicates a slot offset value, T SRS indicates a slot period, l' indicates a symbol number, and R indicates a symbol repetition factor.

[0095] It should be understood that the counting rule of the transmission of the reference signal can be predefined or preconfigured by the system.

[0096] In combination with the third aspect, in some possible implementation manners, the first frequency domain bandwidth X1 corresponds to a first level frequency domain position index n b1 , and the first level frequency domain position index n b1 satisfies:

[0097] or,

[0098] wherein, n RRC indicates a frequency domain starting position index of the reference signal, m SRS,b indicates the number of frequency domain resource blocks occupied by the single transmission of the reference signal, and the m SRS,b is determined according to the second frequency domain bandwidth X2, n SRS indicates the value of the transmission counter corresponding to the reference signal, and b hop ​​indicates a frequency hopping parameter.

[0099] In some possible implementation modes, the second frequency domain bandwidth X2 and the second level frequency domain location index n b2 Correspondingly, the second level frequency domain location index n b2 is used to determine the frequency domain resource location of the reference signal in a single transmission of N times of the reference signal.

[0100] In some possible implementation modes, according to the configuration information, the reference signal is transmitted, including:

[0101] based on the first level frequency domain location index n b1 and the second level frequency domain location index n b2 , the index n b (i,j) of the frequency domain resource location of the reference signal transmitted for the i-th time in the j-th group is obtained;

[0102] the reference signal is transmitted at the frequency domain resource location,

[0103] wherein the index n b (i,j) satisfies:

[0104] n b (i,j) = n b1 *N + n b2 ;

[0105] or,

[0106] the first level frequency domain location index n b1 satisfies:

[0107] or,

[0108] wherein the second level frequency domain location index n b2 is used to determine the frequency domain resource location of the reference signal in a single transmission of N times of the reference signal, and the n RRC indicates a frequency domain starting location index of the reference signal, m SRS,b indicates a number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS indicates a value of a transmission counter corresponding to the reference signal, b hop indicates a frequency hopping parameter, a value of the i is equal to a value of the n SRS , and the j indicates any one of N times of the reference signal in a same group corresponding to the i, and the first level frequency domain location index n b1The second-level frequency domain position index n corresponding to the reference signal transmitted N times in the same group is the same b2 Different.

[0109] In combination with the third aspect, in some possible implementation manners,

[0110] In the case of a frequency domain bandwidth The pilot sequence length corresponding to the reference signal transmitted once satisfies:

[0111] In the case of a frequency domain bandwidth The pilot sequence length corresponding to the reference signal transmitted once satisfies:

[0112] Wherein, m SRS,b represents the number of frequency domain resource blocks occupied by the transmitted reference signal transmitted once, represents the number of subcarriers corresponding to each frequency domain resource block, K TC represents the number of combs, P F represents a high-level parameter frequency domain expansion factor.

[0113] In combination with the third aspect, in some possible implementation manners, before transmitting the reference signal according to the configuration information, the method further includes:

[0114] jointly designing the transmission sequence of the reference signal transmitted N times;

[0115] The transmitting the reference signal according to the configuration information includes:

[0116] transmitting the reference signal N times according to the transmission sequence of the reference signal transmitted N times after joint design according to the configuration information.

[0117] Based on the above technical solution, the transmission sequence of the reference signal N times is jointly designed, so that the frequency domain noise reduction of the channel estimation of the reference signal N times can be realized, and the channel estimation accuracy is further improved.

[0118] In combination with the third aspect, in some possible implementation manners, the value of N is determined based on one or more of the following manners:

[0119] Manner 1: obtaining the value of N from a value set of N predefined by a protocol;

[0120] Manner 2: determining the value of N based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2;

[0121] ​​Manner 3: determining the value of N based on the frequency domain bandwidth X1, the frequency domain bandwidth X2 and the frequency domain repetition factor R.

[0122] It should be understood that the value of N can be determined by the network device based on any one or more of the above manners 1-3, and sent to the terminal device through configuration information; or the value of N can be predefined by the system; or the value of N can be determined by the terminal device based on the above manners.

[0123] In combination with the third aspect, in some possible implementation manners, in the case that the frequency domain resources between the reference signals are adjacent, the sequences of the reference signals are adjacent; or in the case that the transmission counter values between the reference signals are adjacent, the sequences of the reference signals are adjacent.

[0124] A fourth aspect provides a communication method. The method can be executed by a network side, or can also be executed by other subjects, which are not limited in the present application. The network side includes a network device, or a chip, a system or a circuit in the network device, or a central unit (CU) or a distributed unit (DU) in the network device, or a functional module capable of invoking and executing a program in the network device. For ease of description, the following is described by taking the execution by the network device as an example.

[0125] The method includes:

[0126] determining configuration information, the configuration information being used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, the first frequency domain bandwidth X1 being used to transmit N times of reference signals, the second frequency domain bandwidth X2 being used to transmit the reference signals once, wherein X1, X2 and N are all integers greater than 1, and X2*N=X1;

[0127] sending the configuration information.

[0128] It should also be understood that the fourth aspect corresponds to the third aspect, and the related description and technical effects can be referred to the description of the third aspect.

[0129] In combination with the fourth aspect, in some possible implementation manners, the configuration information further includes one or more of the following:

[0130] the value of N, a frequency hopping parameter, a frequency hopping pattern index, a frequency domain starting position, a frequency domain offset, a transmission comb or a comb offset.

[0131] In some possible implementation manners, the counting rule of the reference signal transmission is to jointly count N times of the reference signal transmission, which means that the N times of the reference signal transmission correspond to the same value of a transmission counter, and the value n of the transmission counter satisfies: SRS

[0132]

[0133] wherein, N represents the number of times of the reference signal transmission, N represents the number of times of the reference signal transmission, and n represents the value of the transmission counter. T represents the number of slots in a system frame, and nf represents the system frame number. T represents the slot number in a system frame, T represents the slot offset value, T represents the slot period, l' represents the symbol number, and R represents the symbol repetition factor. offset SRS

[0134] In some possible implementation manners, the first frequency domain bandwidth X1 corresponds to a first-level frequency domain position index n b1 , and the first-level frequency domain position index n b1 satisfies:

[0135]

[0136] wherein, n RRC represents the frequency domain starting position index of the reference signal, m SRS,b represents the number of frequency domain resource blocks occupied by a single transmission of the reference signal, and the m SRS,b is determined according to the second frequency domain bandwidth X2, n SRS represents the value of the transmission counter corresponding to the reference signal, and b hop represents the frequency hopping parameter.

[0137] In some possible implementation manners, the second frequency domain bandwidth X2 corresponds to a second-level frequency domain position index n b2 , and the second-level frequency domain position index n b2 is used to determine the frequency domain resource position of a single transmission of the reference signal in N times of the reference signal transmission.

[0138] In some possible implementation manners, the first-level frequency domain position index n b1 and the second-level frequency domain position index n b2 are used to determine the index n b (i,j) of the frequency domain resource position of the jth transmission of the ith group of the reference signal, and the index n b (i,j) satisfies:​​​​​

[0139] n b (i,j)=n b1 *N+n b2 ;

[0140] or,

[0141] wherein the first level frequency domain position index n b1 satisfies:

[0142] or,

[0143] wherein the second level frequency domain position index n b2 is used to determine the frequency domain resource position of the reference signal of a single transmission of N times of the reference signal transmission, the n RRC represents the frequency domain starting position index of the reference signal, m SRS,b represents the number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS represents the value of the transmission counter corresponding to the reference signal, b hop represents the frequency hopping parameter, the value of the i is equal to the value of the n SRS , the j represents any one of N times of the reference signal transmission in the same group corresponding to the i, the first level frequency domain position index n b1 corresponding to the N times of the reference signal transmission in the same group is the same, and the second level frequency domain position index n b2 corresponding to the N times of the reference signal transmission in the same group is different.

[0144] In combination with the fourth aspect, in some possible implementation manners, in the case of a frequency domain bandwidth , the pilot sequence length corresponding to a single transmission of the reference signal satisfies:

[0145] In the case of a frequency domain bandwidth , the pilot sequence length corresponding to a single transmission of the reference signal satisfies:

[0146] wherein m SRS,b represents the number of frequency domain resource blocks occupied by a single transmission of the reference signal, represents the number of subcarriers corresponding to each frequency domain resource block, K TC represents the number of combs, and P F represents a high-level parameter frequency domain spreading factor.

[0147] ​​In some possible implementation manners, the value of N is determined based on one or more of the following manners in combination with the fourth aspect:

[0148] Manner 1: the value of N is obtained from a value set of N predefined by a protocol;

[0149] Manner 2: the value of N is determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2;

[0150] Manner 3: the value of N is determined based on the frequency domain bandwidth X1, the frequency domain bandwidth X2 and a frequency domain repetition factor R.

[0151] In combination with the fourth aspect, in some possible implementation manners, in a case where the frequency domain resources between the reference signals are adjacent, the sequences of the reference signals are adjacent; or,

[0152] in a case where the transmission counter values between the reference signals are adjacent, the sequences of the reference signals are adjacent.

[0153] The fifth aspect provides a communication apparatus, which is configured to execute the method in any of the possible implementation manners of the first aspect to the fourth aspect. Specifically, the apparatus can include units and / or modules for executing the method in any of the possible implementation manners of the first aspect to the fourth aspect, such as a processing unit and / or a communication unit.

[0154] In an implementation manner, the apparatus is a communication device (such as a terminal device or a network device). When the apparatus is a communication device, the communication unit can be a transceiver, or an input / output interface; and the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0155] In another implementation manner, the apparatus is a chip, a chip system or a circuit or a communication module for a communication device (such as a terminal device or a network device). When the apparatus is a chip, a chip system or a circuit for a communication device, the communication unit can be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuit on the chip, the chip system or the circuit, etc.; and the processing unit can be at least one processor, a processing circuit or a logic circuit, etc.

[0156] The sixth aspect provides a communication apparatus, which includes at least one processor configured to execute a computer program or instructions to perform the method in any of the possible implementation manners of the first aspect to the fourth aspect. Optionally, the apparatus further includes a memory configured to store the computer program or instructions. Optionally, the apparatus further includes a communication interface coupled to the processor, which can be configured to input the computer program or instructions into the processor, or output information in the processor.

[0157] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device).

[0158] In another implementation, the apparatus is a chip, a chip system or a circuit or a communication module for a communication device (e.g., a terminal device, or a network device).

[0159] In a seventh aspect, a processor is provided, configured to perform the method provided in any of the first aspect to the fourth aspect.

[0160] For the sending and obtaining / receiving operations involved in the processor, if no special description is made, or if it does not contradict the actual role or the inherent logic in the related description, it can be understood as the processor output and receive, input operations, and can also be understood as the sending and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in the present application.

[0161] Optionally, the apparatus further comprises a memory for storing programs, and the at least one processor is configured to execute the computer programs or instructions in the memory.

[0162] Optionally, the apparatus further comprises a communication interface, which is coupled with the processor and can be used to input information to the processor or output information in the processor.

[0163] In an eighth aspect, a computer readable storage medium is provided, which stores program codes for execution by a device, and the program codes comprise codes for performing the method in any of the possible implementation manners of the first aspect to the fourth aspect.

[0164] In a ninth aspect, a computer program product containing instructions is provided, which, when the computer program product is run on a computer, causes the computer to perform the method in any of the possible implementation manners of the first aspect to the fourth aspect.

[0165] In a tenth aspect, a chip is provided, which comprises a processor and a communication interface, and the processor reads instructions on a memory through the communication interface and executes the method provided in any of the implementation manners of the first aspect to the fourth aspect.

[0166] Optionally, the chip is a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core.

[0167] Optionally, as an implementation form, the chip further comprises a memory, the memory storing a computer program or instructions, and the processor is configured to execute the computer program or instructions stored on the memory, and when the computer program or instructions are executed, the processor is configured to execute the method provided in any one of the implementation forms of the first aspect to the fourth aspect.

[0168] In an eleventh aspect, a computer program product containing instructions, which when executed on a computer, cause the computer to perform the method provided in any one of the implementation forms of the first aspect to the fourth aspect.

[0169] In a twelfth aspect, a communication system is provided, comprising the terminal device and the network device as described above. BRIEF DESCRIPTION OF DRAWINGS

[0170] FIG. 1 is a schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0171] FIG. 2 is another schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0172] FIG. 3 is a schematic diagram of frequency hopping transmission of SRS.

[0173] FIG. 4 is another schematic diagram of frequency hopping transmission of SRS.

[0174] FIG. 5 is a schematic diagram of a tree structure corresponding to C SRS = 18 in a SRS bandwidth configuration table.

[0175] FIG. 6 is a schematic diagram of a communication method 600 provided by embodiments of the present application.

[0176] FIG. 7 is a schematic diagram of frequency hopping transmission of SRS provided by embodiments of the present application.

[0177] FIG. 8 is another schematic diagram of frequency hopping transmission of SRS provided by embodiments of the present application.

[0178] FIG. 9 is another schematic diagram of frequency hopping transmission of SRS provided by embodiments of the present application.

[0179] FIG. 10 is a schematic diagram of a first level frequency hopping pattern and a second level frequency hopping pattern suitable for embodiments of the present application.

[0180] FIG. 11 is a schematic diagram of a second level frequency hopping pattern suitable for embodiments of the present application.

[0181] FIG. 12 is a schematic diagram of a communication apparatus 1200 provided by embodiments of the present application.

[0182] FIG. 13 is a schematic diagram of another communication apparatus 1300 provided by embodiments of the present application.

[0183] FIG. 14 is a schematic diagram of a chip system 1400 according to an embodiment of the present application. DETAILED DESCRIPTION

[0184] The technical solutions in the present application will be described below with reference to the drawings.

[0185] The technical solutions provided in the present application can be applied to various communication systems, such as a 5th generation (5G) or new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like. The technical solutions provided in the present application can also be applied to future communication systems. The technical solutions provided in the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and internet of things (IoT) communication systems. The technical solutions provided in the present application can also be applied to low frequency scenarios, high frequency scenarios, terahertz, and the like.

[0186] The technical solutions provided in the present application can also be applied to non terrestrial network (NTN) systems such as inter-satellite communication and satellite communication. As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with a base station. The satellite can act as a base station or a terminal device. The satellite can refer to a drone, a hot air balloon, a low earth orbit satellite, a medium earth orbit satellite, a high earth orbit satellite, and the like. The satellite can also refer to a non-ground base station or a non-ground device, and the like.

[0187] A device in a communication system can send a signal to another device or receive a signal from another device. The signal can include information, signaling, or data, and the like. The device can be replaced by an entity, a network entity, a network element, a communication device, a communication module, a node, a communication node, and the like. The present disclosure describes the device as an example. For example, the communication system can include at least one terminal device and at least one network device. The network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the network device.

[0188] The terminal device in the embodiments of the present application can be a device or module with corresponding communication functions for accessing the above-mentioned communication system. The terminal device can include various devices with wireless communication functions, which can be used to connect people, things, machines, etc. The terminal device can be widely used in various scenarios, such as cellular communication, D2D, V2X, peer to peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city UAV, robot, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. The terminal device can be a user equipment (UE) of the 3rd generation partnership project (3GPP) standard, a terminal, a fixed device, a mobile station device or a mobile device, a subscriber unit, a handheld device, a vehicle-mounted device, a wearable device, a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a notebook computer, a wireless modem, a handset, a laptop computer, a computer with wireless transceiver function, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a target tracking device, an aircraft (such as a drone, a helicopter, a multi-copter, a quad-copter, or an airplane, etc.), a ship, a remote control device, a smart home device, an industrial device, a transport vehicle with wireless communication function, a communication module, a road side unit (RSU) with terminal function, or a device built-in in the above-mentioned device (such as a communication module, a modem or a chip in the above-mentioned device, etc.), or other processing devices connected to the wireless modem. For the convenience of description, the terminal device will be described as an example of a terminal or UE hereinafter.

[0189] It should be understood that in certain scenarios, a UE can also be used to function as a base station. For example, a UE can function as a scheduling entity that provides sidelink signals between UEs in V2X, D2D, or P2P, etc. scenarios.

[0190] In the embodiments of the present application, the device for realizing the function of the terminal device, i.e., the terminal device, can be a terminal device or a device capable of supporting the terminal device to realize the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the terminal device. In the embodiments of the present application, the chip system can be composed of a chip or can include a chip and other discrete devices. In addition, program instructions for performing corresponding communication functions can also be configured in the device.

[0191] The network device in the embodiments of the present application can be a device or module with corresponding communication function. The network device can be a device for communicating with a terminal device, and the network device can also be referred to as an access network device or a radio access network device, for example, the network device can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) for accessing a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: node B (NodeB), evolved node B (eNB), next generation node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmission point, primary station, secondary station, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being arranged in the foregoing device or apparatus. The base station can also be a mobile switching center and a device assuming a base station function in D2D, V2X, M2M communication, a network side device in a future communication network, a device assuming a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form of the network device.

[0192] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device communicating with another base station.

[0193] In some deployments, the network device mentioned by embodiments of the application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)) and a DU node. For example, the network device can include a gNB-CU-CP, a gNB-CU-UP and a gNB-DU.

[0194] In some deployments, a plurality of RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a CU, a DU, a CU-CP, a CU-UP, or a radio unit (RU) (or radio frequency unit), etc. The CU and the DU can be separately arranged, or can be included in the same network element, such as a BBU. The RU can be included in a radio frequency device or a radio frequency unit, such as an RRU, an AAU or an RRH.

[0195] In some deployments, the CU is a logical node that carries the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer and other control functions of the access network device. The CU is connected to network nodes such as core networks through some interfaces, which can be E2 interfaces, etc. Optionally, the CU has part of the functions of the core network. The CU (such as the PDCP layer and higher layers) is connected to the DU (such as the radio link control (RLC) layer and lower layers) through some interfaces, which can be F1 interfaces, etc. In some examples, these interfaces (such as the F1 interface) can provide control plane (C-Plane) and user plane (U-Plane) functions (such as interface management, system information management, UE context management, RRC message transmission, etc.). The F1 application protocol (F1AP) is an application protocol of the F1 interface, which defines the signaling procedures of the F1 in some examples. The F1 interface supports the control plane (F1 control plane, F1-C), the user plane (F1 user plane, F1-U).

[0196] In some deployments, a CU can be split into a CU-CP and a CU-UP. The CU-CP is a logical node that carries the control plane part of PDCP (PDCP-C) layer and RRC layer, and is used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network that is used to implement the control plane function. The network element in the core network that is used to implement the control plane function can be an access and mobility function network element. The CU-UP is a logical node that carries the user plane part of PDCP (PDCP-U) layer and SDAP layer, and is used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network that is used to implement the user plane function. The network element in the core network that is used to implement the user plane function. The above configurations of the CU and the DU are merely examples, and the CU and the DU can have other functions according to needs. For example, the CU or the DU can be configured to have more protocol layer functions, or the CU or the DU can be configured to have partial processing functions of the protocol layers. For example, partial functions of the RLC layer and functions of the protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of the protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements. For example, functions that need to meet a relatively short delay requirement in processing time are arranged in the DU, and functions that do not need to meet the delay requirement are arranged in the CU.

[0197] In some deployments, a DU is a logical node that carries an RLC layer, a medium access control (MAC) layer, a higher physical (Higher PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and other processing functions.

[0198] In some deployments, a RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, a RU can be a TRP or a RRH or other similar functional entity. In some examples, a Low-PHY includes portions of PHY processing such as fast Fourier transform (FFT), inverse fast Fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. A RU communicates with one or more UEs over a wireless link.

[0199] A DU and a RU can or can not be co-located. A DU and a RU exchange control plane and user plane information over a fronthaul link via a lower-layer split-control, user and synchronization (LLS-CUS) interface. The LLS-CUS can include interfaces and interfaces that provide control plane and user plane, respectively. In some examples, the control plane refers to real-time control between a DU and a RU. A DU and a RU have an interface of a fronthaul link (e.g., referred to as a LLS-M interface) to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between a DU and a RU.

[0200] A DU and a RU can cooperate to collectively implement the functionality of a PHY layer. A DU can be connected to one or more RUs. The functionality that a DU and a RU have can be configured in multiple ways according to design. For example, a DU is configured to implement baseband functionality and a RU is configured to implement mid- RF functionality. As another example, a DU is configured to implement high-layer functionality in a PHY layer and a RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in a PHY layer can include a portion of functionality of a PHY layer that is closer to a MAC layer, and the low-layer functionality in a PHY layer can include another portion of functionality of a PHY layer that is closer to a mid-RF side.

[0201] In one possible design, a processing unit in a BBU that implements baseband functionality is referred to as a base band high (BBH) unit, and a processing unit in a RRU / AAU / RRH that implements baseband functionality is referred to as a base band low (BBL) unit.

[0202] The CU (or CU-CP and CU-UP), DU, or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, the radio access network can also be an open radio access network (O-RAN) architecture, in which the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). Any of the CUs (or CU-CPs, CU-UPs), DUs, and RUs in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0203] In the embodiments of the present application, the device for implementing the function of the network device can be a network device, or a device capable of supporting the network device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the network device. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In addition, program instructions for performing corresponding communication functions can also be configured in the device. In the embodiments of the present application, only the device for implementing the function of the network device is taken as an example for description, and the scheme of the embodiments of the present application is not limited.

[0204] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on aircraft, balloons, and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in the embodiments of the present application. In addition, the terminal device and the network device can be hardware devices, or software functions running on special-purpose hardware, general-purpose hardware, such as virtualized functions instantiated on a platform (for example, a cloud platform), or entities including special-purpose or general-purpose hardware devices and software functions. The specific forms of the terminal device and the network device are not limited in the present application.

[0205] First, a communication system suitable for the embodiments of the present application is briefly introduced as follows.

[0206] Referring to FIG. 1, FIG. 1 is a schematic diagram of a wireless communication system suitable for the embodiments of the present application.

[0207] As shown in FIG. 1, the wireless communication system includes a radio access network 100. The radio access network 100 can be a future (e.g., a future communication system) radio access network, or a legacy (e.g., a 5G, 4G, 3G or 2G) radio access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be connected to each other or connected to one or more network devices (110a, 110b, collectively referred to as 110) in the radio access network 100. Network elements in the wireless communication system are connected through interfaces (e.g., NG, Xn), or air interfaces.

[0208] FIG. 1 is only a schematic diagram, and the wireless communication system can further include other devices, such as a core network (CN) device, a wireless relay device, and / or a wireless backhaul device, etc., which are not shown in FIG. 1.

[0209] Referring to FIG. 2, FIG. 2 is another schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0210] As shown in FIG. 2, the wireless communication system can include a core network device, an access network device (e.g., a RAN), and a terminal device. The access network device communicates with the core network device through a backhaul link, and communicates with the terminal device through an air interface. For example, a BBU in the access network device communicates with the core network through a backhaul link, and a RU in the access network device communicates with the terminal device through an air interface. The BBU can communicate with the RU through a front-haul link, and the BBU and the RU can be co-located or not co-located. In some deployments, the BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through a mid-haul link.

[0211] FIG. 2 is only a schematic diagram, and the wireless communication system can further include other devices, which are not shown in FIG. 2.

[0212] In order to facilitate better understanding of the technical solutions of the present application, some related technologies involved in the technical solutions of the present application are introduced.

[0213] 1. Reference signal (RS)

[0214] Reference signals are also called pilot signals. In a communication system, it is necessary to transmit and receive data, acquire system synchronization and feedback channel information, estimate uplink or downlink channels. Channel estimation refers to the process of reconstructing or recovering received signals to compensate for signal distortion caused by channel fading and noise, which uses reference signals known by the transmitter and the receiver to obtain time-domain and frequency-domain changes of the channel. The above-mentioned reference signals are also called reference signals, which are distributed in different resource elements (REs) in the time-frequency two-dimensional space within the orthogonal frequency division multiplexing (OFDM) symbol, and have known amplitudes and phases.

[0215] At the physical layer, uplink communication can include transmission of uplink physical channels and uplink signals. The uplink physical channels include random access channels (PRACH), physical uplink control channels (PUCCH), physical uplink shared channels (PUSCH), etc., and the uplink signals include sounding reference signals (SRS), physical uplink control channel demodulation reference signals (PUCCH-DMRS), physical uplink shared channel demodulation reference signals (PUSCH-DMRS), demodulation reference signals (DMRS), phase tracking signals (PTRS), positioning SRS or SRS for positioning, etc.

[0216] At the physical layer, the downlink communication can include transmission of downlink physical channels and downlink signals. Among them, the downlink physical channels include a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), etc., and the downlink signals include a primary synchronization signal (PSS) / secondary synchronization signal (SSS), a physical downlink control channel demodulation reference signal (PDCCH-DMRS), a physical downlink shared channel demodulation reference signal (PDSCH-DMRS), a demodulation reference signal (DMRS), a phase tracking signal (PTRS), a channel state information reference signal (CSI-RS), a cell reference signal (CRS), a tracking reference signal (TRS), a positioning RS, a synchronization signal block (SSB), etc.

[0217] 2. Resource.

[0218] The resource in the embodiments of the present application can be a resource set or a resource that the network device can configure for the terminal device.

[0219] The resource set can include at least one of a channel state information (CSI) synchronization signal block (CSI-SSB) resource set, a CSI interference measurement (CSI-IM) resource set, a non zero power-channel state information reference signal (NZP-CSI-RS) resource set, or a zero power-channel state information reference signal (ZP-CSI-RS) resource set.

[0220] The reference signal in the embodiments of the present application can correspond to a resource, the reference signal can occupy the resource, and one resource can be referred to as a resource of the reference signal. The resource in the embodiments of the present application can include a frequency domain resource and / or a time domain resource, and the like. The resource can also include at least one of a CSI-SSB resource, or a CSI-IM resource, or an NZP-CSI-RS resource, a ZP-CSI-RS resource, a sounding reference signal (SRS) resource, a demodulation reference signal (DMRS) resource, a PTRS resource, a CRS resource, or a TRS resource. In the embodiments of the present application, a CSI-RS resource is taken as an example for introduction, and the CSI-RS resource is also written as a channel state information reference signal (CSI-RS) resource in the present document. The CSI-RS resource can also be replaced by other resources. The CSI-RS resource can also be understood as a resource occupied by the CSI-RS, and can also be replaced by a resource corresponding to the CSI-RS, or a resource of the CSI-RS.

[0221] 3. Sounding reference signal.

[0222] Sounding Reference Signal (SRS): is an uplink channel sounding signal, sent by the terminal device, received by the network device. In the sending method of SRS, including the time-frequency resource of sending SRS, sending beam, sending power, etc., which are generally configured by the network device for the terminal device. In the framework of 3GPP related protocols, the network device can configure one or more SRS resource sets for the terminal device, and each SRS resource set has one or more SRS resources.

[0223] In addition, in the 3GPP related protocol, different SRS resource sets bear different functions, and generally an SRS resource set can support four functions: {beamManagement, codebook, nonCodebook, antennaSwitching}, i.e. {beam management, codebook, non-codebook, antenna switching}, or can be abbreviated as {BM, CB, NCB, AS}. The network device can configure the usage of each SRS resource set through RRC signaling to inform the terminal device of the function of the corresponding SRS resource set. For example, when the usage of the SRS resource set is antennaSwitching, the SRS corresponding to the SRS resource set is generally used to obtain complete uplink channel information. Assuming that in the TDD system, the channel has the property of uplink reciprocity, i.e. the uplink channel and the downlink channel have consistency, then the SRS corresponding to the SRS resource set can also obtain the channel of downlink transmission (or the precoding of downlink transmission) through uplink channel measurement.

[0224] SRS can be used for uplink channel quality estimation and channel selection, calculating the signal-to-interference-plus-noise ratio (SINR) of the uplink channel, and can also be used for obtaining the uplink channel coefficient. In the TDD scenario, the uplink and downlink channels have reciprocity, and SRS can also be used to obtain the downlink channel coefficient. The uplink / downlink channel coefficients estimated by the network device according to the SRS can be used to determine the uplink / downlink precoding matrix, improve the uplink / downlink transmission rate, and increase the system capacity.

[0225] The network device configures the time-frequency resource position occupied by the SRS resource and the transmission mode adopted for transmitting the SRS on the SRS resource through high-layer signaling such as RRC signaling or medium access control (MAC-CE) signaling. The configuration information of each SRS resource (for example, the high-layer parameter SRS-Resource) at least contains the index number of the SRS resource, the time-frequency position information occupied by the SRS resource, the SRS transmission port number, etc., and can be determined through configuration parameters such as those in Table 1. The minimum sounding bandwidth of the SRS resource supported by NR is 4 physical resource blocks (PRBs), and the frequency hopping bandwidths of different SRS resources have an integer multiple relationship and the frequency hopping pattern has a tree structure.

[0226] Table 1 SRS resource configuration parameters

[0227] The time-domain type of the SRS resource configuration includes periodic, semi-static, and aperiodic. The configuration information of the periodic SRS resource includes a period (for example, 2 ms, 5 ms, 10 ms, etc.) and a bias parameter. After the network device configures the SRS resource through RRC signaling, the terminal device will transmit the SRS on the determined SRS resource according to the configuration information in a specific periodic slot. The configuration information of the aperiodic SRS resource does not include a period and a bias parameter, but only includes a time-domain bias parameter K that triggers the downlink control information (DCI) signaling of the SRS. When the terminal device receives the DCI signaling at the nth time and the signaling indicates to trigger the SRS, the terminal device will transmit the SRS on the corresponding SRS resource at the n+K time, where K and n are positive integers.

[0228] In a possible implementation manner, different terminal devices can occupy the same time-domain resource (for example, a symbol) or frequency-domain resource (for example, a subcarrier) when transmitting the SRS to the network device.

[0229] For example, different terminal devices occupy different subcarriers corresponding to the same symbol to send SRS to the network device. One terminal device can not send SRS on each subcarrier corresponding to the symbol, but selects a specific subcarrier beam set based on a transmission comb value (comb) and sends SRS on the subcarriers in the specific subcarrier beam set. For example, a terminal device can use a configured transmission comb number and comb offset to determine the specific subcarriers it occupies to send SRS. For example, the comb number is 2, indicating that each terminal device occupies 6 subcarriers on each resource block (RB), and the comb offset is 0, indicating that the terminal device occupies the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers to transmit SRS, and the comb offset is 1, indicating that the terminal device occupies the 2nd, 4th, 6th, 8th, 10th, and 12th subcarriers to transmit SRS.

[0230] When the comb number is greater than 1, different terminal devices are allowed to be frequency division multiplexed within the same OFDM symbol, i.e., different terminal devices occupy different subcarriers in the same RB within the same OFDM symbol to transmit SRS. For example, a transmission comb spacing of 2 allows two groups of terminal devices to be frequency multiplexed with a single subcarrier offset between the two groups. The larger the comb number, the larger the number of terminal devices that can be multiplexed within the same OFDM symbol, but the fewer the resource elements (e.g., time-frequency resources) used by each terminal device to transmit SRS, in which case the quality of SRS measurement can be reduced.

[0231] For another example, different terminal devices occupy the same resource elements (e.g., the same time domain resources and the same frequency domain resources) and use different cyclically shifted base sequences to send SRS. Each terminal device can be configured to send a base sequence (e.g., a Zadoff-Chu sequence) with a specific cyclic shift as SRS. That is, by selecting a base sequence and using different cyclic shifts to shift each SRS, the SRS sent by different terminal devices is orthogonalized, assuming that the SRS sent by terminal device #1 using a first cyclic shift is orthogonal to the SRS sent by terminal device #2 using a second cyclic shift. Therefore, even if terminal device #1 and terminal device #2 occupy the same resource elements to send SRS, the interference between the SRS of terminal device #1 and terminal device #2 received by the network device is still very small.

[0232] The length of the base sequence can be determined based on the number of resource elements allocated for the SRS, for example, the length of the base sequence is equal to the number of resource elements allocated for the SRS. The length of the base sequence can also be related to the number of resource blocks allocated for the SRS and the number of used combs, or the length of the base sequence can be related to the number of available cyclic shifts and the number of combs allocated for the SRS. For example, when the number of combs = 2, the maximum number of available cyclic shifts = 8; when the number of combs = 4, the maximum number of available cyclic shifts = 12; when the number of combs = 8, the maximum number of available cyclic shifts = 6.

[0233] It should be understood that the different cyclic shifts described above can also be allocated to multiple antenna ports of the same terminal device for transmitting SRS. For example, one SRS resource set of a terminal device contains 2 SRS resources, for example, a first SRS resource and a second SRS resource, the first SRS resource contains antenna port 1 and antenna port 2, and the second SRS resource contains antenna port 3 and antenna port 4. Four cyclic shifts can be configured to the four antenna ports of the terminal device for transmitting SRS.

[0234] In another possible implementation manner, the terminal device can transmit SRS in a frequency hopping manner, that is, multiple SRS transmitted by the terminal device can be switched between different frequency bands in the frequency domain resource.

[0235] It should be understood that frequency hopping refers to switching the transmission of multiple SRS of the terminal device between different frequency bands in the frequency domain resource.

[0236] For example, when the transmission bandwidth of a single SRS transmitted by the terminal device is less than the maximum value of the SRS transmission bandwidth (for example, 272 resource blocks), the terminal device can configure the SRS resource in a frequency hopping manner and use different parts of the SRS transmission bandwidth to transmit SRS.

[0237] For example, in the NR protocol, the uplink power of the SRS transmitted by the terminal device to the network device is limited, resulting in low accuracy of the channel state information obtained by the network device based on the received SRS reference signal. In order to improve the accuracy of the channel estimation obtained by the network device based on the SRS, the bandwidth of a single SRS transmitted by the terminal device can be reduced to improve the frequency power spectrum density of the SRS, thereby ensuring the uplink power of a single SRS and improving the accuracy of the channel state information obtained by the network device.

[0238] Referring to FIG. 3, FIG. 3 is a schematic diagram of frequency hopping transmission of SRS. FIG. 3 shows a schematic diagram of single-bandwidth SRS transmission, 2-time sub-band frequency hopping SRS transmission, and 4-time sub-band frequency hopping SRS transmission. In the multiple-time sub-band frequency hopping SRS transmission process, the frequency domain resource position of each SRS frequency hopping transmission is random, and the sequence of each SRS frequency hopping transmission is independent, which causes the SRS transmitted each time to experience different multipath benefits, thereby causing the SRS signals to interfere with each other at the network device, increasing the difficulty of channel estimation, and affecting the accuracy of channel estimation.

[0239] Specifically, the introduction of frequency hopping transmission of SRS is as follows:

[0240] SRS can support frequency hopping transmission, and the specific frequency hopping characteristics can be determined by parameters in the time domain and the frequency domain.

[0241] The determination process of the time domain position of SRS is as follows:

[0242] For example, in the time domain, SRS occupies N S (nrofSymbols) symbols (such as 1, 2, 4) in a time slot, the repetition parameter (repetitionFactor, R) ∈ {1, 2, 4}, and R ≤ N S , that is, R times on each symbol.

[0243] According to repetitionFactor, it can be seen that:

[0244] When R = N S , that is, SRS transmission in the time slot is not supported in the frequency hopping manner;

[0245] When R = 1, N S = 2, 4, SRS transmission in the time slot is supported in the frequency hopping manner, and the frequency hopping is specifically in units of one OFDM symbol;

[0246] When R = 2, N S = 4, SRS transmission in the time slot is supported in the frequency hopping manner, and the frequency hopping is specifically in units of a pair of OFDM symbols (that is, 2 OFDM symbols);

[0247] Among them, for periodic SRS and semi-static SRS, corresponding period and time domain offset parameters need to be configured. Periodic SRS and semi-static SRS can be transmitted in the time slot in the frequency hopping manner, or can be transmitted in the time slot (that is, according to the period of SRS) in the frequency hopping manner. Non-periodic SRS frequency hopping can only be performed in the time slot (that is, all frequency hopping is completed after triggering once);

[0248] The determination process of the frequency domain position of SRS is as follows:

[0249] For example, the network device configures the SRS resource for the terminal device through RRC signaling, and the RRC signaling indicates the number of ports included in the SRS resource, the frequency domain position and the time domain position occupied by the SRS resource, the period used, the comb, the cyclic shift value, the sequence ID and the like. Among them, the frequency domain position of the SRS resource is determined by a set of frequency domain parameters in the RRC signaling (in the existing 3GPP protocol, the frequency domain parameters include n RRC , n shift , B SRS , C SRS , b hop ), and the terminal device can determine the bandwidth and the starting position of the frequency domain occupied by the SRS through the frequency domain parameters and the rules predetermined by the protocol.

[0250] Among them, C SRS is the index number of the SRS bandwidth configuration of the cell, B SRS is the index number of the SRS bandwidth configuration of the user, b hop indicates whether SRS frequency hopping is performed (or indicates the frequency hopping bandwidth occupied by the SRS in one symbol), n shift indicates the offset value of the SRS transmission starting from the low frequency of the uplink system bandwidth (or indicates the starting frequency domain position of the SRS frequency hopping bandwidth), and n RRC indicates the frequency domain starting position index of the user SRS (or indicates the frequency domain position of the starting frequency hopping sub-band of the SRS).

[0251] Among them, the starting position of the SRS frequency domain: the terminal device determines the overall frequency domain starting position of the SRS in the frequency domain according to the parameters n RRC and n shift configured by the network device for the terminal device.

[0252] The configuration bandwidth (or frequency hopping bandwidth) of the SRS: the terminal device determines the number m SRS,b′ of RBs occupied by the SRS as a whole according to the parameters b hop and C SRS configured by the network device for the terminal device and the following table 3, wherein b′=b hop . For example, assuming that b hop =0 and C SRS =9, it can be determined that m SRS,b′ =32 by searching table 3.

[0253] The bandwidth of each symbol of the SRS (or the bandwidth of the frequency hopping sub-band): the terminal device determines the number m SRS,b of RBs occupied by the SRS in each symbol according to the parameters B SRS and C SRS configured by the network device for the terminal device and the following table 3, wherein b=BSRS For example, assume B SRS = 2, C SRS = 9, by looking up Table 3, it can be determined that m SRS,b = 8.

[0254] When b hop ≥ B SRS , the terminal device does not enable frequency hopping mode. That is, the terminal device transmits SRS in a non-frequency hopping mode. It should be understood that in the case of transmitting SRS in a non-frequency hopping mode, the terminal device transmits SRS once covering the entire configured bandwidth of the SRS resource.

[0255] When b hop < B SRS , the terminal device enables frequency hopping mode. That is, the terminal device transmits SRS in a frequency hopping mode. It should be understood that in the case of transmitting SRS in a frequency hopping mode, the terminal device transmits SRS each time covering only a part (i.e., one frequency hopping sub-band) of the configured bandwidth of the SRS resource, and the terminal device transmits SRS multiple times in one frequency hopping period to cover the entire configured bandwidth of the SRS resource.

[0256] The current SRS transmission mode is as follows:

[0257] (1) If b hop ≥ B SRS (non-frequency hopping), the value of the frequency domain position index n b is fixed (constant) and satisfies:

[0258] (2) If b hop < B SRS (frequency hopping), the value of the frequency domain position index n b is fixed (constant) and satisfies:

[0259] wherein,

[0260] n SRS is the SRS transmission number specific to the terminal device (the transmission count of the terminal device), n SRS satisfies:

[0261] wherein, the related descriptions of the specific parameters involved in the above formula and the specific values can be referred to Table 2 as follows:

[0262] Table 2

[0263] It should be noted that the example is illustrated by taking Figure 4 as an example. One block in Figure 4 represents 4 RBs in the frequency domain, therefore, the configuration bandwidth of the SRS resource includes 48 RBs, and the SRS occupies 12 RBs in one time domain symbol, therefore, the terminal device can send the SRS in a frequency hopping manner in 4 time domain symbols, and the bandwidth of each time domain symbol is one fourth of the overall configuration bandwidth. In Figure 4, the small black blocks represent 4 RBs carrying the SRS. It should be noted that the 4 time domain symbols in Figure 4 can be 4 continuous time domain symbols or 4 non-continuous time domain symbols, and the embodiments of the present application do not limit this, and the frequency hopping manner shown in Figure 4 is only used to illustrate the occupation manner of the frequency domain resource of the SRS, and does not limit the occupation manner of the time domain resource of the SRS.

[0264] In combination with the example in Figure 4 described above, the frequency hopping times of one frequency hopping period in the example are the times of sending the SRS by the terminal device in one frequency hopping period. For example, the frequency hopping times in Figure 4 are 4.

[0265] Optionally, the frequency hopping times are equal to Wherein, N b According to C SRS and Table 3.

[0266] For example, assuming that b hop = 0, C SRS = 9, and B SRS = 2, the frequency hopping times are equal to 2 x 2 = 4.

[0267] Table 3

[0268] Based on the parameters in the SRS bandwidth configuration table described in Table 3 above. Taking C SRS = 18 as an example, the corresponding row in the SRS bandwidth configuration table is as shown in bold in Table 3. It can be seen that when the value of B SRS is 0, 1, 2, and 3 respectively, the total bandwidth of 72 RBs can be divided according to the tree structure. The bandwidth division corresponding to different values of B SRS can be seen from Figure 5.

[0269] In combination with the SRS frequency hopping diagrams shown in Figures 3 and 4 above, and the SRS bandwidth configuration table shown in Table 3, in the process of multiple sub-band frequency hopping SRS sending, the frequency domain resource position of each SRS frequency hopping sending is random, and the sequence of each SRS frequency hopping sending is independent, which causes the SRSs sent each time to experience different multipath benefits, thereby causing the SRS signals to interfere with each other at the network device, increasing the difficulty of channel estimation, and affecting the accuracy of channel estimation.

[0270] Therefore, the application provides a communication method, which reduces mutual interference between SRS signals of frequency hopping transmission, and improves the accuracy of channel estimation.

[0271] Before introducing the scheme of the application, the following points are explained.

[0272] (1) In the application, "indication" can include direct indication, indirect indication, display indication, and implicit indication. When describing that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0273] In the application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, a protocol), thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be transmitted as a whole, or can be transmitted separately as a plurality of sub-information, and the transmission period and / or transmission opportunity of the sub-information can be the same or different.

[0274] (2) In the application, "transmit" and "receive" represent the direction of signal transmission. For example, "transmitting information to XX" can be understood as that the destination of the information is XX, which can include direct transmission through the air interface, or indirect transmission through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct reception from YY through the air interface, or indirect reception from YY through the air interface from other units or modules. "Transmit" can also be understood as "output" of the chip interface, and "receive" can also be understood as "input" of the chip interface. In other words, transmission and reception can be carried out between devices, for example, between network devices and terminal devices, or can be carried out within a device, for example, between components, modules, chips, software modules or hardware modules in the device through a bus, wire or interface.

[0275] (3) In various embodiments of the application, the terms and / or descriptions of different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0276] (4) In the present application, “first”, “second”, and “#1”, “#2”, and “#n1”, “#n2”, etc. are only for convenience of description, used to distinguish objects, and do not limit the scope of the embodiments of the present application. They are not used to describe the order or sequence of features. It should be understood that the objects thus described can be interchanged under appropriate circumstances in order to be able to describe solutions other than the embodiments of the present application.

[0277] (5) In the present application, “predefined” can mean standard protocol predefined, or can also mean pre-agreed or pre-negotiated between devices. In the present application, “protocol” can refer to a standard protocol in the field of communication, which can include, for example, 5G protocol, NR protocol and related protocols applied in future communication systems, and the present application does not limit it. “Predefined” can include predefinition. For example, protocol definition. “Preconfigured” can be implemented by pre-saving the corresponding code, table or other means that can be used to indicate related information in the device, and the present application does not limit its implementation, for example.

[0278] (6) In the present application, words such as “exemplarily” and “for example” are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as “example” in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of the word “example” is intended to present the concept in a specific way. In the embodiments of the present application, “of”, “corresponding” and “corresponding” can be used interchangeably at times, and it should be pointed out that when their differences are not emphasized, the meanings they express are consistent.

[0279] The method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments provided by the present application can be applied in the communication system shown in FIG. 1, without limitation.

[0280] It should be understood that the embodiments of the present application can be applicable to a communication scenario of terminal side and network side communication. Exemplarily, the network side can include a network device, a CU or a DU in the network device, or a module (such as a circuit, a chip or a chip system, etc.) in the network device, or a logical node, a logical module or software capable of realizing all or part of the function of the access network device, and the terminal side can include a terminal device, a communication module in the terminal device, or a circuit or a chip (such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip containing a modem core, or a system in package (SIP) chip) responsible for the communication function in the terminal device, or a logical node, a logical module or software capable of realizing all or part of the function of the access network device. For ease of description, the following communication method is described taking the network device and the terminal device as the execution subject. When the terminal side is other nodes, chips, circuits or entities, or when the network side is other nodes, chips, circuits or entities, the corresponding specific implementation manners are similar and will not be described herein.

[0281] It should also be understood that in the following embodiments, the terminal device and the network device are exemplarily described. The terminal device can be replaced by a component (such as a chip or a chip system or a circuit) of the terminal device, and the network device can be replaced by a component (such as a chip or a chip system or a circuit) of the network device.

[0282] Referring to FIG. 6, FIG. 6 is a schematic diagram of a communication method 600 provided by an embodiment of the present application. The method 600 shown in FIG. 6 can include the following steps.

[0283] 601, the network device sends configuration information to the terminal device, and correspondingly, the terminal device receives the configuration information of the network device.

[0284] It should be understood that the configuration information is used to determine the first-level frequency hopping pattern and the second-level frequency hopping pattern. The first-level frequency hopping pattern corresponds to a frequency domain bandwidth X1 of multiple (such as N times) transmissions of a reference signal, and the second-level frequency hopping pattern corresponds to a frequency domain bandwidth X2 of a single transmission of a reference signal. Wherein X1, X2 and N are all integers greater than 1, and X2*N=X1.

[0285] It should also be understood that the configuration information can also be used to determine the frequency domain bandwidth X1 (or referred to as the first frequency domain bandwidth X1) and the frequency domain bandwidth X2 (the second frequency domain bandwidth X2).

[0286] It should also be understood that the reference signal in the embodiments of the present application is exemplarily described taking SRS as an example, and the method provided by the present application can also be applicable to other reference signals, which will not be enumerated one by one.

[0287] It should also be understood that the configuration information can be transmitted by an RRC configuration message, an RRC reconfiguration message, a MAC-CE, or DCI carrying transmission, or by separate signaling.

[0288] In one possible implementation manner, the configuration information includes a first parameter, and the first parameter includes one or more of the following parameters: a value of N, a frequency domain starting position, a frequency domain offset value, a frequency hopping parameter, a transmission comb, a comb offset value, or a frequency hopping pattern index, and the like. Wherein, the value of N, the frequency hopping parameter and the frequency hopping pattern index can be used to determine the frequency domain bandwidth X1 and the frequency domain bandwidth X2.

[0289] As an example, the first parameter is used to determine the first level frequency hopping pattern.

[0290] It should be understood that the frequency domain starting position can be used to determine the starting position of the first level frequency hopping pattern in the frequency domain for transmitting the SRS; the frequency domain offset value can be used to determine the offset value size of the frequency hopping bandwidth of the first level frequency hopping pattern for transmitting the SRS; the frequency hopping parameter can be used to determine the configuration bandwidth of the first level frequency hopping pattern for transmitting the SRS (or referred to as the frequency hopping bandwidth corresponding to the first level frequency hopping pattern, for example, X1); the transmission comb can be used to determine the number of subcarriers occupied by the frequency domain resources for multiple times of transmitting the SRS in the first level frequency hopping pattern; the comb offset value can be used to determine the position of the frequency domain resources for multiple times of transmitting the SRS in the first level frequency hopping pattern; the frequency hopping pattern index corresponds to the first level frequency hopping pattern in one-to-one correspondence, and the frequency hopping pattern index is used to determine the position of the frequency domain resources for transmitting the SRS corresponding to the first level frequency hopping pattern.

[0291] For example, the first parameter (for example, the frequency hopping parameter) can be used to determine the configuration bandwidth of the SRS, and the configuration bandwidth of the SRS includes one or more frequency hopping subbands. For example, the configuration bandwidth of the SRS includes L frequency hopping subbands, and L is a positive integer. Exemplarily, the terminal device can determine the frequency hopping subband occupied by the SRS according to the frequency hopping parameter b hop and C SRS and Table 3 above to determine the number m of RBs occupied by the SRS as a whole SRS,b′ , that is, the configuration bandwidth of the SRS (or referred to as the frequency hopping bandwidth), wherein b' = b hop . The terminal device can determine the number m of RBs occupied by the SRS on each symbol according to the parameter B SRS and C SRS and Table 3 above to determine the number m of RBs occupied by the SRS on each symbol SRS,b , that is, the number of RBs occupied by the frequency hopping subband, wherein b = B SRS

[0292] The bandwidth of each frequency hopping sub-band is the same (i.e., the number of RBs occupied by each frequency hopping sub-band is the same). For example, any two frequency hopping sub-bands do not overlap, i.e., there is no same RB in any two frequency hopping sub-bands. The first frequency hopping sub-band is any one of the one or more frequency hopping sub-bands, and the second frequency hopping sub-band is any one of the other frequency hopping sub-bands except the first frequency hopping sub-band in the one or more frequency hopping sub-bands. It can be seen that the first frequency hopping sub-band is different from the second frequency hopping sub-band.

[0293] It should be understood that the frequency domain bandwidth corresponding to each of the one or more frequency hopping sub-bands (e.g., the first frequency hopping sub-band, the second frequency hopping sub-band) can be understood as the frequency domain bandwidth corresponding to the first-level frequency hopping pattern, for example, the frequency domain bandwidth is X1.

[0294] It should also be understood that the first parameter is used to determine the specific manner of the first-level frequency hopping pattern. For details, reference can be made to the above description of the specific location of the frequency domain resource for transmitting the SRS in FIGS. 3 and 4. For example, the first-level frequency hopping pattern can be regarded as the resource location of the frequency domain bandwidth corresponding to any one of the four consecutive time domain symbols shown in FIG. 4 (e.g., one time domain symbol in FIG. 4 corresponds to the frequency domain resource location of the four black squares).

[0295] It should be understood that the first-level frequency hopping pattern can be determined based on one or more of the following information: the value of N, the counting rule of the transmission counter of the first-level frequency hopping pattern for transmitting the SRS, the frequency domain bandwidth X1, or the frequency domain starting position of the reference signal transmitted N times in the first-level frequency hopping pattern.

[0296] The value of N is the number of transmissions of SRS within the same group.

[0297] It should be understood that the N times of transmission of SRS within the same group can also be understood as: the N times of SRS transmitted continuously are grouped. The N is an integer greater than or equal to 1.

[0298] It should also be understood that when N = 1, it can represent that a single SRS transmission of a single symbol can be counted as one SRS transmission; when N > 1, it can represent that multiple SRS transmissions of multiple symbols are counted as one SRS transmission.

[0299] It should also be understood that the value of N can be predefined by the system / protocol, or determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2, or determined based on the frequency domain bandwidth X1, the frequency domain bandwidth X2, and the frequency domain repetition factor R. For details of how the terminal device determines the value of N, reference can be made to the detailed description in step 602, which will not be repeated here.

[0300] The counting rule of the transmission counter of the first-level frequency hopping pattern for transmitting the SRS is used to determine the transmission count of the current SRS.

[0301] It should be understood that the transmission counter is determined according to the value of N, n f , T offset , T SRS , one or more of l' and R. Wherein, n f represents the number of slots within a system frame, offset represents the system frame number, T SRS represents the slot offset value, T SRS represents the slot period, l' represents the symbol number, and R represents the symbol repetition factor.

[0302] It should be understood that the transmission counter can adopt one or more of the following ways to determine the transmission count of the current SRS:

[0303] Method one: independently count the transmission of a single SRS, and the transmission count of the SRS is n SRS , which can satisfy the following formula:

[0304] Method two: jointly count multiple SRS transmissions, that is, multiple SRSs with consecutive transmission counts are grouped into a group, and SRSs in the same group correspond to the same SRS transmission count, and the value of the transmission counter corresponding to the count is n SRS , which can satisfy the following formula:

[0305] Method three: jointly count multiple SRS transmissions, that is, multiple SRSs with consecutive transmission counts are grouped into a group, and SRSs in the same group correspond to the same SRS transmission count, and the value of the transmission counter corresponding to the count is n SRS,b , which can satisfy the following formula:

[0306] Wherein, the frequency domain bandwidth X1 of each group of SRS transmissions can be determined according to at least one of m TC , K F , P SRS and N.

[0307] For example, the frequency domain bandwidth X1 of each group of SRS transmissions can be determined in one or more of the following ways to determine the pilot sequence of SRS transmission:

[0308] Method four: based on the values of parameters B SRS , C SRSpilot sequence length of each SRS transmission satisfies:

[0309] Way five: based on parameter B SRS , C SRS , N, look up Table 3 above to determine the frequency domain bandwidth X1=N*M of each group of SRS transmission SRS pilot sequence length of each SRS transmission satisfies:

[0310] Way six: based on parameter B SRS , C SRS , N, look up Table 3 above to determine the frequency domain bandwidth M=N*M of each group of SRS transmission SRS , then the pilot sequence of all or part of SRS transmission within each group is jointly designed. For example, the pilot sequence length of N times of SRS transmission within each group may satisfy the following formula:

[0311] wherein the frequency domain starting position of each group of SRS transmission can be used to determine the frequency domain starting position of the group of SRS transmission.

[0312] It should be understood that the frequency domain starting position is related to the SRS transmission count. Assuming that multiple SRS transmissions within the same group are jointly counted, i.e., multiple SRS transmissions within the same group correspond to the same SRS transmission count, then the multiple SRS transmissions within the same group of SRS transmission occupy the same frequency domain starting position and different frequency domain offset positions.

[0313] As another example, the first parameter is used to determine a second-level frequency hopping pattern.

[0314] It should be understood that the second-level frequency hopping pattern can be understood as dividing the time domain symbol corresponding to a first-level frequency hopping pattern into x time domain sub-symbols, and dividing the frequency domain bandwidth X1 corresponding to the first-level frequency hopping pattern into x frequency domain bandwidths. Wherein each of the x frequency domain bandwidths is X2, X2*x=X1, and x is a positive integer greater than 1. The second-level frequency hopping pattern corresponds to the frequency domain bandwidth X2 of a single transmission SRS, and the first-level frequency hopping pattern corresponds to the frequency domain bandwidth X1 of multiple (e.g., x times) transmission SRS.

[0315] It should also be understood that the frequency domain starting position can be used to determine the position of the first frequency domain resource for transmitting SRS in the second level frequency hopping pattern; the frequency domain offset value can be used to determine the position of the frequency domain resource for transmitting SRS corresponding to the second level frequency hopping pattern; the frequency hopping parameter can be used to determine the configuration bandwidth (for example, X2) of the second level frequency hopping pattern for transmitting SRS; the transmission comb is used to determine the number of subcarriers occupied by the frequency domain resource for single transmission of SRS in the second level frequency hopping pattern; the comb offset value is used to determine the specific position of the frequency domain resource for single transmission of SRS in the second level frequency hopping pattern; the frequency hopping pattern index corresponds to the second level frequency hopping pattern one by one, and the frequency hopping pattern index is used to determine the specific position of the frequency domain resource for single transmission of SRS in the second level frequency hopping pattern.

[0316] For example, the first parameter can be used to determine the second level frequency hopping pattern. How to determine the specific position of the frequency domain resource for single transmission of SRS in the second level frequency hopping pattern according to the first parameter will be exemplarily introduced below:

[0317] Taking C SRS = 63, b hop = 0, B SRS = 1 as an example, that is, the total bandwidth of SRS transmission = 272 RB, which is completed by frequency hopping. For example, SRS is transmitted by frequency hopping in one or more of the following ways:

[0318] Mode seven: first level frequency hopping.

[0319] Referring to FIG. 7, it is assumed that each symbol SRS transmission occupies 16 RBs, and 17 frequency hopping transmissions are used to complete the SRS transmission of 272 RB bandwidth. As shown in FIG. 7, the frequency domain position index (or understood as the first frequency domain position index n b1 ) for transmitting SRS is {0, 8, 16, 7, 15, 6, 14, 5, 13, 4, 12, 3, 11, 2, 10, 1, 9} respectively, so that the SRS transmission of 272 RB bandwidth is completed by 17 frequency hopping transmissions.

[0320] Mode eight: second level frequency hopping.

[0321] Among them, the second level frequency domain position index is introduced for each SRS transmission.

[0322] It is assumed that the bandwidth occupied by single SRS transmission is equal to the bandwidth determined based on the parameter m SRS,b query table 3:

[0323] The N times of adjacent SRS transmissions are divided into the same group, and the multiple times of SRS transmissions in the same group occupy adjacent frequency domain resources. The transmission counter of the multiple times of SRS transmissions in the same group is counted only once, and the multiple times of SRS transmissions are jointly counted by defining a new SRS transmission counting method. Among them, the multiple times of SRS transmissions with continuous transmission counting are divided into the same group, and the multiple times of SRS transmissions in the same group correspond to the same SRS counting. The counting value n SRS may be determined according to the value of n n f , T offset , T SRS , one or more of l' and R, for example, n SRS may satisfy:

[0324] or

[0325] wherein the first-level frequency hopping pattern corresponds to a first-level frequency domain position index n b1 , and the first-level frequency domain position index n b1 may be used to determine a first frequency domain position. The first-level frequency domain position may be used to indicate a frequency domain position where SRSs in the same group are transmitted. The first-level frequency domain position is a frequency domain position where multiple (for example, N) times of SRSs can be transmitted. The first-level frequency domain position index n b1 may be determined according to at least one of n RRC , m SRS,b , n SRS and b hop , for example, the n b may satisfy:

[0326] wherein the second-level frequency hopping pattern corresponds to a second-level frequency domain position index n b2 , and the second-level frequency domain position index n b2 is used to determine a second frequency domain position, and the second frequency domain position is within the range of the first frequency domain position, and the second frequency domain position is used to indicate a frequency domain position where each time of transmitting a reference signal in N times of transmitting the reference signal in the same group.

[0327] The frequency domain resource position occupied by the multiple times of transmitting SRSs in the same group in the transmission of the first-level frequency hopping pattern is determined by the second-level frequency hopping pattern index n b2 . The second-level frequency hopping pattern index n b2 may be carried in the configuration information indicated to the terminal device, and used by the terminal device to determine the specific position of the frequency domain resource occupied by the multiple times of transmitting SRSs in the same group.

[0328] Assume that in the first-level frequency hopping pattern, four SRSs are transmitted within the same group, i.e., N=4. The four transmitted SRSs occupy four frequency domain resource positions, as shown in Figure 4:

[0329] Table 4

[0330] For example, the second-level frequency hopping pattern index "0" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission within each group. b2 They are {0, 1, 2, 3} respectively; the second-level frequency hopping pattern index "1" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission in each group. b2 The indices are {1, 2, 3, 0}; the second-level frequency hopping pattern index "2" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission within each group. b2 The indices are {2, 3, 0, 1}; the second-level frequency hopping pattern index "3" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission within each group. b2 They are {3, 0, 1, 2}, etc.

[0331] It should be understood that the terminal device can be based on the first-level frequency domain location index n b1 Second-level frequency domain position index n b2 Determine the i-th (i=n) SRS The frequency domain resource location n occupied by the j-th SRS transmission in group ) b (i,j), the n b (i,j) can be determined according to n b1 N and n b2 At least one of them is determined, for example, n b (i,j) satisfies:

[0332] n b (i,j)=n b1 *N+n b2

[0333] Where, n b2 The specific size can be determined by referring to Table 4.

[0334] Referring to Figure 8, assuming each symbol of SRS transmission occupies 16 RBs, and 20 = (17 mod 4) * 4 frequency hopping operations are used to complete the 272 RB bandwidth of SRS transmission, dividing each 16 RB into a sub-band, and the 272 RBs into 17 sub-bands, the first-level frequency domain position index n b1 They are {0,0,0,0,3,3,3,3,1,1,1,1,1,4,4,4,4,2,2,2,2}, and the second-level frequency domain position index n b2{0, 1, 2, 3}, and the final determined frequency domain resource position of each SRS transmission is {0, 1, 2, 3, 12, 13, 14, 15, 4, 5, 6, 7, 16, 0, 1, 2, 8, 9, 10, 11}.

[0335] It should be understood that, for the first level frequency domain position index n b1 , m SRS,b is determined according to the value of n b1 , and the corresponding frequency domain block is {frequency domain subband 0~frequency domain subband 3} when n b1 =0, the corresponding frequency domain block is {frequency domain subband 4~frequency domain subband 7} when n SRS,b =1, and so on; for the second level frequency domain position index, m b2 (16) RBs in each of the above frequency domain blocks are divided into a sub-frequency domain block, each sub-frequency domain block is sequentially numbered based on the frequency point from low to high, corresponding to a second level frequency domain position index, n b2 =0 corresponds to the first sub-frequency domain block in the frequency domain block, n SRS,b =1 corresponds to the second sub-frequency domain block in the frequency domain block, and so on.

[0336] Method nine: two-level frequency hopping.

[0337] Among them, two-level frequency domain position index is introduced for each SRS transmission.

[0338] Assuming that, in the case that the bandwidth occupied by a single SRS transmission is less than the bandwidth determined based on the parameter m SRS,b , refer to Table 3:

[0339] N times of adjacent SRS transmissions are divided into the same group, and the frequency domain resources occupied by multiple SRS transmissions in the same group are adjacent. The transmission counter of multiple SRS transmissions in the same group only counts once, and the joint counting of multiple SRS transmissions is realized by defining a new SRS transmission counting method. Among them, multiple SRS transmissions with continuous transmission counting are divided into the same group, and multiple SRS transmissions in the same group correspond to the same SRS counting. The counting value n SRS in the transmission counter can be determined according to one or more of N, n f , T offset , T SRS , l' and R, for example, n SRS may satisfy:

[0340] or

[0341] Among them, the first-level frequency hopping pattern and the first-level frequency domain position index n b1 Correspondingly, the first-level frequency domain position index n b1 This can be used to determine the first frequency domain location. This first-level frequency domain location can be used to indicate the frequency domain location of the same group of transmitted SRS. This first-level frequency domain location is the frequency domain location where multiple (e.g., greater than or equal to N) SRS can be transmitted. The first-level frequency domain location index can follow the protocol n involved in Figures 3 and 4 above. b1 Define n b1 According to n RRC m SRS,b n SRS N b and F b (n SRS At least one of ) is determined, for example, the n b1 It can satisfy:

[0342] Among them, the second-level frequency hopping pattern and the second-level frequency domain position index n b2 Correspondingly, the second-level frequency domain position index n b2 It can be used to determine a second frequency domain position within the range of a first frequency domain position. This second frequency domain position can be used to indicate the frequency domain position of each transmitted reference signal in N transmissions within the same group.

[0343] Through the second-level frequency hopping pattern index n b2 This determines the frequency domain resource locations occupied by multiple SRS transmissions within the same group in the first-level frequency hopping pattern. The second-level frequency hopping pattern index is n. b2 It can be carried in the configuration information and indicated to the terminal device, so that the terminal device can determine the specific location of the frequency domain resources occupied by multiple SRS transmissions within the same group.

[0344] It should be understood that the terminal device can be based on the first-level frequency domain location index n b1 Second-level frequency domain position index n b2 Determine the i-th (i=n) SRS The frequency domain resource location n occupied by the j-th SRS transmission in group ) b (i,j), the n b (i,j) can be determined according to n RRC m SRS,b F b (n SRS ), N, n b2 , and N b At least one of them is determined, for example, n b (i,j) can satisfy:

[0345] wherein n b2 The specific size can be determined by referring to Table 4.

[0346] It should also be understood that the first-level frequency domain position index n b1 of the multiple SRS transmissions within the same group is the same, and the second-level frequency domain position index n b2 is different. Wherein the frequency domain pilot sequence length of the single SRS transmission within the same group is It can satisfy:

[0347] Referring to FIG. 9, assuming that each symbol SRS transmission occupies 4 RBs, 17*4 frequency hopping is used to complete SRS transmission of 272 RB bandwidth, the first-level frequency domain position index n b1 of the SRS transmission is {0, 8, 16, 7, 15, 6, 14, 5, 13, 4, 12, 3, 11, 2, 10, 1, 9} respectively, and the second-level frequency domain position index n b2 is {0, 1, 2, 3} respectively. Wherein each 4 RBs is divided into a sub-band, 272 RBs are divided into 68 sub-bands, and the corresponding second-level combined frequency domain position index of each SRS transmission is {0, 1, 2, 3, 32, 33, 34, 35, 64, 65, 66, 67…, 36, 37, 38, 39} respectively.

[0348] It should be understood that in this mode nine, for the first-level frequency domain position index n b1 , m SRS,b (16) RBs are divided into a frequency domain block, each frequency domain block is sequentially numbered based on the frequency point from low to high, corresponding to a first-level frequency domain position index, when the first-level frequency domain position index n b1 = 0, the corresponding frequency domain block is {frequency domain sub-band 0}, when the first-level frequency domain position index n b1 = 1, the corresponding frequency domain block is {frequency domain sub-band 1}, and so on; for the second-level frequency domain position index n b2 , m RBs in each of the above frequency domain blocks are divided into a sub-frequency domain block, each sub-frequency domain block is sequentially numbered based on the frequency point from low to high, corresponding to a second-level frequency domain position index n b2 , when the second-level frequency domain position index n b2 = 0, the first sub-frequency domain block in the frequency domain block is corresponding, when the second-level frequency domain position index n b2 = 1, the second sub-frequency domain block in the frequency domain block is corresponding, and so on.

[0349] Based on the above detailed description about the first parameter for determining at least one of the first level frequency hopping pattern and the second level frequency hopping pattern, the possible pattern design of the first level frequency hopping pattern and the second level frequency hopping pattern will be exemplarily introduced below in combination with FIG. 10-FIG. 11.

[0350] Referring to FIG. 10, FIG. 10 is a schematic diagram of the first level frequency hopping pattern and the second level frequency hopping pattern determined based on the above-mentioned determination manner of the location of the frequency domain resource in the first frequency hopping pattern and the second frequency hopping pattern. Among them, the location of the frequency domain resource of the first level frequency hopping pattern on two time slots is a non-continuous bandwidth, and the combination of the location of the frequency domain resource of the second level frequency hopping pattern on different symbols in any one of the two time slots is a continuous bandwidth.

[0351] As shown in (1) of FIG. 10, it is assumed that the bandwidth corresponding to the first level frequency hopping pattern is divided into N parts (for example, N=4), the repetition factor R=1, and SRS is transmitted on 4 symbols in the time slot by occupying different frequency domain resources. Among them, the transmission of 4 SRSs in the same time slot completes the transmission of multiple SRSs corresponding to the first level frequency hopping pattern. The bandwidth corresponding to the second level frequency hopping pattern is the bandwidth corresponding to each of the 4 times of transmitting SRS.

[0352] As shown in (2) of FIG. 10, it is assumed that the bandwidth corresponding to the first level frequency hopping pattern is divided into N parts (for example, N=2), the repetition factor R=2, and SRS is transmitted on 2 symbols in the time slot by occupying different frequency domain resources, and SRS is transmitted on 2 symbols by occupying the same frequency domain resource. Among them, the transmission of 4 SRSs in the same time slot completes the transmission of multiple SRSs corresponding to the first level frequency hopping pattern. The bandwidth corresponding to the second level frequency hopping pattern is the bandwidth corresponding to each of the 4 times of transmitting SRS. Among them, (2) of FIG. 10 shows the second level frequency hopping pattern in multiple adjacent time slots.

[0353] As can be seen, in the process of transmitting SRS, SRS transmission is completed according to the second level frequency hopping pattern in the same time slot, and SRS transmission is completed according to the first level frequency hopping pattern between different time slots. Optionally, the above-mentioned 4 times of SRS transmission can also be 4 symbols of adjacent time slots, which will not be listed one by one in this application.

[0354] Referring to FIG. 11, FIG. 11 is a schematic diagram of a second level frequency hopping pattern. It is assumed that the bandwidth corresponding to the first level frequency hopping pattern is 16 RBs, and the bandwidth corresponding to the second level frequency hopping pattern is 4 RBs. The specific location of the frequency domain resource of the second frequency hopping pattern in the same time slot is as shown in any one of FIG. 11.

[0355] According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB1, RB2, RB3, and RB4, as shown in (1) of FIG. 11. According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB2, RB3, RB4, and RB1, as shown in (2) of FIG. 11. According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB3, RB4, RB1, and RB2, as shown in (3) of FIG. 11. According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB4, RB1, RB2, and RB3, as shown in (4) of FIG. 11. According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB2, RB4, RB1, and RB3, as shown in (5) of FIG. 11. According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB1, RB3, RB2, and RB4, as shown in (6) of FIG. 11. According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB3, RB1, RB4, and RB2, as shown in (7) of FIG. 11. According to the time sequence, the frequency domain resources of the second level frequency hopping pattern for single transmission of SRS on the corresponding frequency domain resources in the same time slot are RB4, RB2, RB3, and RB1, as shown in (8) of FIG. 11.

[0356] It can be understood that each of RB1, RB2, RB3, and RB4 can include a plurality of RBs, which can be respectively regarded as a resource block group (RBG). For example, each of RB1, RB2, RB3, and RB4 can include 4 RBs, which can be respectively regarded as RBG1, RBG2, RBG3, and RBG4. One RBG includes 4 RBs, and the frequency domain resource bandwidth included in each RBG can be represented as 4RB=X2.

[0357] It should be understood that only the schematic diagram of multiple SRS transmissions in the same time slot on different symbols is shown in FIG. 11, and of course, the multiple SRS transmissions can be on different symbols in the same time slot or OFDM symbols in different time slots, which is not limited in the present application.

[0358] It should also be understood that the configuration information in step 601 can also include one or more SRS resource sets for allocating resources for SRS transmission. Wherein, one SRS resource set contains one or more SRS resources, and the SRS resource contains time domain resources or frequency domain resources for SRS signal transmission. Wherein, one SRS resource contains one or more antenna ports for SRS signal transmission. Or it can be understood that one SRS resource set indicates one or more time-frequency domain resources for SRS transmission and one or more antenna ports for SRS transmission.

[0359] In one possible implementation, one SRS resource set contains a usage indication information ('usage') for indicating the usage of the SRS resource set, and the usage can be antenna switching, codebook, non-codebook, or beam management.

[0360] For example, the network device can obtain the channel state information CSI of the downlink with reciprocity between the uplink and the downlink by receiving and measuring the SRS signal corresponding to the SRS resource set with the usage of antenna switching.

[0361] For another example, the network device can obtain the channel state information CSI of the uplink by receiving and measuring the SRS signal corresponding to the SRS resource set with the usage of codebook, that is, when the precoding mode of the uplink of the terminal device is codebook, the network device obtains the transmitted precoding matrix indicator (TPMI) by receiving and measuring the SRS signal, and indicates the transmission precoding of the uplink of the terminal device by the SRS resource indicator (SRI) and the TPMI.

[0362] For another example, the network device can obtain the channel state information CSI of the uplink by receiving and measuring the SRS signal corresponding to the SRS resource set with the usage of non-codebook, that is, when the precoding mode of the uplink of the terminal device is non-codebook, the network device obtains the uplink transmission precoding weight by receiving and measuring the SRS signal, and indicates the transmission precoding of the uplink of the terminal device by the SRS resource indicator (SRI).

[0363] For another example, the network device can select the transmit and receive beams for the uplink and downlink transmission of the terminal device by receiving and measuring the SRS signal corresponding to the SRS resource set with the usage of beam management.

[0364] It should be understood that the above-mentioned type of SRS resource set can be configured as periodic, semi-static or aperiodic. For periodic or semi-static SRS resources, periodic SRS resources are configured by a configuration message indicating the period and slot offset of the SRS resources. Among them, the semi-static SRS resource can be dynamically activated and deactivated by DCI signaling, and / or MAC-CE signaling.

[0365] It should also be understood that there is a mapping relationship between the SRS port (which can also be referred to as an antenna port) and the SRS time-frequency domain resource, that is, the SRS information configuration indicates that a specific SRS port transmits SRS on a specific SRS time-frequency domain resource. The SRS time domain resource can span N adjacent symbols within a slot, or occupy multiple symbols of different slots.

[0366] 602, the terminal device sends a reference signal to the network device, and correspondingly, the network device receives the reference signal of the terminal device.

[0367] For example, after the terminal device receives the configuration information from the network device, the terminal device sends a reference signal to the network device according to the configuration information. For example, the terminal device sends a reference signal using a corresponding pilot sequence at the position of the corresponding frequency domain resource based on the configuration information in step 601.

[0368] In one possible implementation manner, the terminal device sends N times of SRS to the network device at N frequency domain resource positions in the first-level frequency hopping pattern according to the first-level frequency hopping pattern and the second-level frequency hopping pattern, where N is an integer greater than 1.

[0369] It should be understood that the N times of SRS sent by the terminal device occupy completely different frequency domain resources.

[0370] Optionally, the terminal device jointly designs the pilot sequences of the N times of SRS sent according to the specific positions of the second-level frequency hopping pattern in the first-level frequency hopping pattern according to the first-level frequency hopping pattern and the second-level frequency hopping pattern.

[0371] For example, the length of the sequence of the N times of SRS sent by the terminal device is The is related to the total number of frequency domain subcarriers occupied by the N times of sent SRS. Among them, the can be expressed as:

[0372] Among them, N is the number of sent SRSs of joint sequence design, m SRS,b Actually, the number of RBs occupied by each SRS in the frequency domain is specified, and the m SRS,b According to the C SRS and B SRS configuration. is the number of subcarriers on each RB. K TC is the number of combs, P F ∈{2,4} high layer parameter frequency domain spreading factor.

[0373] It should also be understood that the specific value of N can be determined based on one or more of the following ways:

[0374] Way ten: the specific value of N is determined based on a set of N values predefined by the protocol.

[0375] It should be understood that the terminal device can be predefined by the protocol / system one or more sets of N values, and the terminal device can obtain the specific value of N from the one or more sets of N values according to a certain predefined rule / protocol or indication information. Wherein, the set of N values includes one or more specific values of N.

[0376] It should also be understood that the way ten can also be understood as: the specific value of N is determined based on a set of N values predefined by the protocol.

[0377] Way eleven: the specific value of N is determined based on the frequency domain bandwidth X1 corresponding to the first level frequency hopping pattern and the frequency domain bandwidth X2 corresponding to the second level frequency hopping pattern.

[0378] For example, N=X1 / X2.

[0379] It should be understood that the terminal device can determine the specific value of N according to the specific values of the frequency domain bandwidth X1 and the frequency domain bandwidth X2, and based on a certain operation / computation rule. Wherein, the specific operation / computation rule can be determined by the terminal device itself or indicated by other devices, which is not limited by the present application.

[0380] It should also be understood that the way eleven can also be understood as: the specific value of N is determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2.

[0381] Way twelve: the specific value of N is determined based on the frequency domain bandwidth X1 corresponding to the first level frequency hopping pattern, the frequency domain bandwidth X2 corresponding to the second level frequency hopping pattern and the frequency domain repetition factor R.

[0382] For example, N=R*(X1 / X2).

[0383] It should be understood that the terminal device can determine the specific value of N according to the specific values of the frequency domain bandwidth X1, the frequency domain bandwidth X2 and the repetition factor R, and based on a certain operation / computation rule. Wherein, the specific operation / computation rule can be determined by the terminal device itself or indicated by other devices, which is not limited by the present application.

[0384] It should also be understood that the twelfth mode can also be understood as: the specific value of N is determined based on the frequency domain bandwidth X1, the frequency domain bandwidth X2 and the repetition factor R.

[0385] It should be understood that the value of N can be predefined or preconfigured, or determined by the network device and sent to the terminal device, or determined by the terminal device itself.

[0386] It should be understood that there can also be a mapping relationship between the SRS sequence obtained by joint sequence design of the N times of SRS transmission and the SRS sequence of single transmission.

[0387] It is assumed that the N times of SRS sequences transmitted by the terminal device can be represented as: Therefore, the N times of continuously transmitted SRS sequences can have a certain relationship with the position of the frequency domain resource of the N times of SRS transmission, or the value of the transmission counter of the multiple times of SRS transmission.

[0388] As an example, in the case that the frequency domain resources of the N times of transmitted SRS sequences are adjacent, the specific positions of the transmitted SRS sequences in the joint sequence are adjacent.

[0389] It is assumed that the sequence of the i-th SRS transmission is: The sequence of the i+1-th SRS transmission is: n , n+1 , 2n-1 , The sequence of the i+2-th SRS transmission is: 2n , 2n+1 , 3n-1 , The sequence of the i+3-th SRS transmission is: n-1 . Wherein, i is an integer, and

[0390] As another example, in the case that the values of the transmission counter of the N times of transmitted SRS sequences are adjacent, the specific positions of the transmitted SRS sequences in the joint sequence are adjacent.

[0391] It is assumed that the sequence of the i-th SRS transmission is: n-1 , The sequence of the i+1-th SRS transmission is: n , n+1 , 2n-1 , The sequence of the i+2-th SRS transmission is: 2n , 2n+1 , 3n-1 , The sequence of the i+3-th SRS transmission is: Wherein, i is an integer, and

[0392] 603, the network device performs channel measurement.

[0393] For example, after the network device receives the multiple SRSs sent by the terminal device, the network device performs channel measurement on the received SRSs. Accordingly, the network device can obtain the channel state information (CSI) of the downlink, or the CSI information of the uplink, or the related information of the transceiving beam based on the received SRSs.

[0394] Specifically, the network device receives the multiple SRSs sent by the terminal device at the time-frequency domain resource positions indicated by the configuration information in step 601. Assuming that the transmission sequence of the N SRSs sent by the terminal device is jointly designed, the network device performs joint channel estimation on the received N SRSs, thereby improving the channel estimation accuracy of the network device.

[0395] The above FIG. 6 is a communication method provided by the present application. The terminal device determines a first-level frequency hopping pattern and a second-level frequency hopping pattern for sending a reference signal based on the configuration information of the network device. The first-level frequency hopping pattern adopts non-continuous sub-band frequency hopping transmission, and the second-level frequency hopping pattern adopts continuous sub-band frequency hopping transmission. By defining the two-level frequency hopping pattern, the bandwidth of the terminal device for transmitting the reference signal at a single time is further reduced, the transmission power of the terminal device for sending the reference signal at a single time is improved, and the estimation accuracy of the channel measurement based on the reference signal is improved.

[0396] In addition, the transmission sequence of the N reference signals is jointly designed, so that the frequency domain noise reduction of the N reference signals for channel estimation can be realized, the frequency interference between the multiple reference signals sent by the terminal device and received by the network device is reduced, and the channel estimation accuracy is further improved.

[0397] In addition, the sub-bands of the multiple reference signals sent by the terminal device are jointly designed, so that the frequency interference between the reference signals is further reduced, and the channel estimation accuracy of the network device based on the reference signal is improved.

[0398] It can be understood that in the embodiments of the present application, the interaction between the terminal device and the network device is mainly taken as an example for illustrative description, and the present application is not limited thereto. The terminal device can be replaced by a receiving end device, and the receiving end device can be a terminal device or a network device. The network device can be replaced by a sending end device, and the sending end device can be a terminal device or a network device.

[0399] It can also be understood that some optional features in the embodiments of the present application can not depend on other features in some scenarios, or can be combined with other features in some scenarios, without limitation.

[0400] It can also be understood that the solutions in the various embodiments of the present application can be reasonably combined for use, and the explanation or description of each term appearing in the embodiments can be mutually referenced or explained in various embodiments, and this is not limited.

[0401] It can also be understood that the methods and operations implemented by the devices (such as terminal devices and network devices) in the various method embodiments described above can also be implemented by components (such as chips or circuits) of the devices, and this is not limited.

[0402] The above describes the method provided by the embodiments of the present application in detail in combination with FIG. 6. The following describes the apparatus provided by the embodiments of the present application in combination with FIG. 12 to FIG. 14. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the method embodiments described above, and this will not be described here for brevity.

[0403] Referring to FIG. 12, FIG. 12 is a schematic diagram of a communication apparatus 1200 provided by an embodiment of the present application. The apparatus 1200 includes a transceiver unit 1210. The transceiver unit 1210 can be used to implement corresponding communication functions. The transceiver unit 1210 can also be referred to as a communication interface or a communication unit. The apparatus 1200 further includes a processing unit 1220. The processing unit 1220 can be used for processing, such as performing beam measurement. The processing unit 1220 can be used for processing, such as performing beam measurement (or referred to as channel measurement). The functions of the processing unit 1220 can be implemented by one or more processors. Specifically, the processor can include a modem chip, or a system on chip (SoC) chip or a SIP chip containing a modem core.

[0404] Optionally, the apparatus 1200 can further include a storage unit, which can be used to store instructions and / or data. The processing unit 1220 can read the instructions and / or data in the storage unit, so that the apparatus implements the foregoing method embodiments.

[0405] Optionally, the transceiver unit 1210 can include a receiving unit and a sending unit. The receiving unit can be used to perform receiving related operations (such as operations of receiving data or messages), and the sending unit can be used to perform sending related operations (such as operations of sending data or messages).

[0406] In a first possible design, the apparatus 1200 can be a terminal device in the foregoing embodiments, and the apparatus 1200 can implement steps or procedures corresponding to steps or procedures performed by a terminal device in the foregoing method embodiments. The transceiver unit 1210 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of a terminal device in the foregoing method embodiments, e.g., the transceiver unit 1210 can be configured to perform steps 601 and 602 in the embodiment of FIG. 6. The processing unit 1220 can be configured to perform operations related to processing of a terminal device in the foregoing method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages), e.g., the processing unit 1220 can be configured to perform step 603 in the embodiment of FIG. 6.

[0407] In a possible implementation, the transceiver unit 1210 is configured to receive configuration information, the configuration information being used to determine a first level frequency hopping pattern and a second level frequency hopping pattern, the first level frequency hopping pattern corresponding to a frequency domain bandwidth X1 for transmitting N times of reference signals, and the second level frequency hopping pattern corresponding to a frequency domain bandwidth X2 for transmitting a single time of reference signals, where X1, X2, and N are integers greater than 1, and X2*N = X1. The processing unit 1220 is configured to transmit, by the transceiver unit 1210, the reference signals according to the configuration information.

[0408] In another possible implementation, the transceiver unit 1210 is configured to receive configuration information, the configuration information being used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, the first frequency domain bandwidth X1 being used for transmitting N times of reference signals, and the second frequency domain bandwidth X2 being used for transmitting a single time of reference signals, where X1, X2, and N are integers greater than 1, and X2*N = X1. The processing unit 1220 is configured to transmit, by the transceiver unit 1210, the reference signals according to the configuration information.

[0409] In a second possible design, the apparatus 1200 can be a network device in the foregoing embodiments, and the apparatus 1200 can implement steps or procedures corresponding to steps or procedures performed by a network device in the foregoing method embodiments. The transceiver unit 1210 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of a network device in the foregoing method embodiments, e.g., the transceiver unit 1210 can be configured to perform steps 601 and 602 in the embodiment of FIG. 6. The processing unit 1220 can be configured to perform operations related to processing of a network device in the foregoing method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages), e.g., the processing unit 1220 can be configured to perform step 603 in the embodiment of FIG. 6.

[0410] In a possible implementation, the processing unit 1220 is configured to determine configuration information, the configuration information being used to determine a first level frequency hopping pattern and a second level frequency hopping pattern, the first level frequency hopping pattern corresponding to a frequency domain bandwidth X1 for transmitting N times of reference signals, the second level frequency hopping pattern corresponding to a frequency domain bandwidth X2 for transmitting a single time of reference signals, where X1, X2, and N are integers greater than 1, and X2*N = X1; and the transceiver 1210 is further configured to transmit the configuration information.

[0411] In another possible implementation, the processing unit 1220 is configured to determine configuration information, the configuration information being used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, the first frequency domain bandwidth X1 being used for transmitting N times of reference signals, the second frequency domain bandwidth X2 being used for transmitting a single time of reference signals, where X1, X2, and N are integers greater than 1, and X2*N = X1; and the transceiver 1210 is further configured to transmit the configuration information.

[0412] It should be understood that the specific process in which each unit performs the corresponding steps described above has been described in detail in the method embodiments described above, and thus is not described herein again for the sake of brevity.

[0413] It should also be understood that the apparatus 1200 herein is embodied in the form of functional units. The term “unit” herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combination of logical circuit and / or other suitable components supporting the described functions. In an optional example, those skilled in the art can understand that the apparatus 1200 can be embodied as the communication apparatus in the above-described embodiments, and can be used to perform the processes and / or steps corresponding to the communication apparatus in each of the method embodiments described above. Thus, the description is not repeated herein for the sake of brevity.

[0414] The apparatus 1200 of each of the above-described solutions has a function of implementing the corresponding steps performed by the communication apparatus in the above-described methods. The function can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, which performs the transceiving operation and the related processing operation in each of the method embodiments, respectively.

[0415] In addition, the transceiver unit 1210 described above can also be a transceiver circuit (for example, can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit.

[0416] It should be noted that the apparatus in FIG. 12 can be a communication device in the foregoing embodiments, or can be a chip or a chip system, for example, a system on chip (SoC). The transceiver unit can be an input / output circuit, a communication interface; the processing unit can be a processor or a microprocessor integrated on the chip or an integrated circuit. This is not limited herein.

[0417] Referring to FIG. 13, FIG. 13 is a schematic diagram of another communication apparatus 1300 provided in an embodiment of the present application. The apparatus 1300 includes a processor 1313, and the processor 1313 is coupled with a memory 1320. The memory 1320 is configured to store computer programs or instructions and / or data. The processor 1313 is configured to execute the computer programs or instructions stored in the memory 1320, or read the data stored in the memory 1320, to perform the methods in the foregoing method embodiments.

[0418] Optionally, the processor 1313 is one or more.

[0419] Optionally, the memory 1320 is one or more.

[0420] Optionally, the memory 1320 and the processor 1313 are integrated together, or are separately arranged.

[0421] Optionally, as shown in FIG. 13, the apparatus 1300 further includes a transceiver 1330, and the transceiver 1330 is configured to receive and / or send signals. For example, the processor 1313 is configured to control the transceiver 1330 to receive and / or send signals. The transceiver 1330 can also be divided into a receiver and / or a transmitter. The receiver is configured to receive signals, and the transmitter is configured to send signals. The receiver is configured to perform the receiving operation related to the method shown in FIG. 6, and the transmitter is configured to perform the sending operation related to the method shown in FIG. 6.

[0422] For example, the processor 1313 can have the function of the processing unit 1220 shown in FIG. 12, the memory 1320 can have the function of a storage unit, and the transceiver 1330 can have the function of the transceiver unit 1210 shown in FIG. 12.

[0423] As an example, the apparatus 1300 is configured to implement the operations performed by the communication apparatus in the foregoing method embodiments.

[0424] For example, the processor 1313 is configured to execute the computer programs or instructions stored in the memory 1320, to implement the related operations of the terminal device or the network device in the foregoing method embodiments.

[0425] It should be appreciated that a processor as mentioned in this application can be any known or future developed processor, and more particularly, a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like. The general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, microcontroller, or state machine, etc.

[0426] It should also be appreciated that a memory as mentioned in this application can be any known or future developed memory, and more particularly, a volatile memory or a non-volatile memory. The non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM). For example, the RAM can be used as the external cache. By way of example and not limitation, the RAM includes the following types: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0427] It should be noted that when the processor is a general processor, a DSP, an ASIC, a FPGA, or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, the memory (storage module) can be integrated in the processor.

[0428] It should also be noted that the memory described herein is intended to include, but is not limited to, the memory types and any other suitable type of memory.

[0429] Referring to FIG. 14, FIG. 14 is a schematic diagram of a chip system 1400 provided by embodiments of the present application. The chip system 1400 (or also referred to as a processing system) includes a logic circuit 1410 and an input / output interface 1420.

[0430] The logic circuit 1410 can be a processing circuit in the chip system 1400. The logic circuit 1410 can be coupled to a storage unit, and invoke instructions in the storage unit, so that the chip system 1400 can implement the methods and functions of embodiments of the present application. The input / output interface 1420 can be an input / output circuit in the chip system 1400, and output information processed by the chip system 1400, or input data or signaling information to be processed by the chip system 1400.

[0431] Optionally, the logic circuit 1410 can be implemented by one or more processors, including the one or more processors or processing portions in the one or more processors.

[0432] Optionally, the input / output interface 1420 can include a transceiver circuit, a transceiver, an input / output circuit or a communication interface.

[0433] As an option, the chip system 1400 is configured to implement operations performed by a communication apparatus (such as a terminal device, or a network device) in the above method embodiments.

[0434] For example, the logic circuit 1410 is configured to implement processing-related operations performed by a communication apparatus (such as a terminal device, or a network device) in the above method embodiments; and the input / output interface 1420 is configured to implement sending and / or receiving-related operations performed by a communication apparatus (such as a terminal device, or a network device) in the above method embodiments.

[0435] Embodiments of the present application also provide a computer readable storage medium, having stored thereon computer instructions for implementing the method performed by a communication apparatus (such as a terminal device, or a network device) in the above method embodiments.

[0436] For example, the computer program is executed by a computer, so that the computer can implement the method performed by a communication apparatus (such as a terminal device, or a network device) in the above method embodiments.

[0437] Embodiments of the present application also provide a computer program product, including instructions, which are executed by a computer to implement the method performed by a communication apparatus (such as a terminal device, or a network device) in the above method embodiments.

[0438] The embodiments of the present application further provide a communication system, which comprises the terminal device and / or the network device in the above embodiments. For example, the system comprises the terminal device and the network device in FIG. 6.

[0439] The explanations and beneficial effects of the related contents in any of the above-provided devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0440] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0441] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. For example, the computer can be a personal computer, a server, a network device, etc. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc. For example, the foregoing available media includes but is not limited to: a variety of media that can store program codes such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0442] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: receiving configuration information, the configuration information being used to determine a starting position of a first frequency domain resource and starting positions of N second frequency domain resources, the N second frequency domain resources being within a frequency domain range of the first frequency domain resource, the N second frequency domain resources being used to transmit reference signals, N being an integer greater than 1; transmitting the reference signals according to the configuration information.

2. The method of claim 1, wherein, The starting positions of the N second frequency domain resources are determined based on the starting position of the first frequency domain resource.

3. The method according to claim 1 or 2, characterized in that, The transmitting the reference signals according to the configuration information comprises: transmitting the reference signals according to the starting positions of the N second frequency domain resources.

4. The method according to any one of claims 1 to 3, characterized in that, The starting positions of the N second frequency domain resources correspond to N second frequency domain resource indexes.

5. The method of claim 4, wherein, N = 4, and the N second frequency domain resource indexes satisfy any one of the following conditions: {0, 1, 2, 3}, {1, 2, 3, 0}, {2, 3, 0, 1}, {3, 0, 1, 2}, {1, 3, 0, 2}, {0, 2, 1, 3}, {2, 0, 3, 1}, or {3, 1, 2, 0}.

6. The method according to any one of claims 1 to 5, characterized in that, The N reference signals on the N second frequency domain resources correspond to the same SRS count value.

7. The method according to any one of claims 1 to 6, characterized in that, The reference signals comprise SRSs, the N second frequency domain resources are located in different orthogonal frequency division multiplexing (OFDM) symbols, and time domain resources are continuous.

8. The method according to any one of claims 1 to 7, characterized in that, The configuration information comprises one or more of the following: a value of the N, a frequency hopping parameter, a frequency hopping pattern index, a frequency domain starting position, a frequency domain offset, a transmission comb, or a comb offset.

9. A communication method characterized by comprising: The method comprises: receiving configuration information, the configuration information being used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, the first frequency domain bandwidth X1 being used to transmit N times of reference signals, and the second frequency domain bandwidth X2 being used to transmit the reference signals once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1; transmitting the reference signals according to the configuration information.

10. The method of claim 9, wherein, Before the transmitting the reference signals according to the configuration information, the method further comprises: jointly designing a transmission sequence of the N times of the reference signals; The transmitting the reference signals according to the configuration information comprises: transmitting the N times of the reference signals according to the jointly designed transmission sequence of the N times of the reference signals.

11. A communication method characterized by comprising: The method comprises: determining configuration information, the configuration information being used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, the first frequency domain bandwidth X1 being used to transmit N times of reference signals, and the second frequency domain bandwidth X2 being used to transmit the reference signals once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1; transmitting the configuration information.

12. The method according to any one of claims 9 to 11, characterized in that, The configuration information comprises one or more of the following: a value of the N, a frequency hopping parameter, a frequency hopping pattern index, a frequency domain starting position, a frequency domain offset, a transmission comb, or a comb offset.

13. The method of claim 12, wherein, The counting rule of the reference signal is to count the N times of the reference signal transmission jointly, the joint counting refers to the value of the same transmission counter corresponding to the N times of the reference signal transmission, the value n of the transmission counter satisfies: SRS , meets: Or wherein denotes the number of slots within a system frame, nf denotes the system frame number, denotes a slot number within a system frame, T offset denotes a slot offset value, T SRS denotes a slot period, l' denotes a symbol number, and R denotes a symbol repetition factor.

14. The method of claim 13, wherein, The first frequency domain bandwidth X1 and the first level frequency domain position index n b1 Correspondingly, the first level frequency domain position index n b1 , satisfies: or wherein n RRC represents the frequency domain starting position index of the reference signal, m SRS,b represents the number of frequency domain resource blocks occupied by a single transmission of the reference signal, the m SRS,b is determined according to the second frequency domain bandwidth X2, n SRS represents the value of the transmission counter corresponding to the reference signal, b hop represents the frequency hopping parameter.

15. The method according to claim 13 or 14, characterized in that, The second frequency domain bandwidth X2 corresponds to a second level frequency domain position index n b2 Correspondingly, the second level frequency domain position index n b2 The frequency domain resource position of the reference signal of a single transmission in the N times of transmission of the reference signal is determined.

16. The method according to claim 14 or 15, characterized in that the first level frequency domain position index n b1 and the second level frequency domain position index n b2 an index n b (i,j) for determining the frequency domain resource position of the reference signal of the i-th group of the j-th transmission b (i,j), satisfying: n b (i,j) = n b1 *N + n b2 ; or wherein the first frequency domain position index n b1 satisfies: or wherein the second-level frequency domain position index n b2 for determining the frequency domain resource position of the reference signal of a single transmission of N transmissions of the reference signal, the n RRC represents a frequency domain starting position index of the reference signal, m SRS,b represents a number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS represents a value of a transmission counter corresponding to the reference signal, b hop represents a frequency hopping parameter, the value of the i SRS is equal to the value of the n b1 , the j represents any one of N transmissions of the reference signal in the same group corresponding to the i, the N transmissions of the reference signal in the same group corresponding to the i b2 have the same first-level frequency domain position index n and different second-level frequency domain position index n .

17. The method of any one of claims 9 to 16, wherein In the frequency domain bandwidth In the case of a single transmission, the pilot sequence length corresponding to the reference signal of the single transmission Satisfies: In the frequency domain bandwidth In the case of a single transmission, the pilot sequence length corresponding to the reference signal of the single transmission Satisfies: wherein m SRS,b represents the number of frequency domain resource blocks occupied by a single said reference signal transmission, denotes the number of subcarriers corresponding to each frequency domain resource block, K TC denotes the number of combs, P F denotes a higher layer parameter frequency domain spreading factor.

18. The method according to any one of claims 9 to 17, characterized in that, the value of the N is determined based on one or more of the following manners: Manner 1: the value of the N is obtained from a set of values of N predefined by a protocol. Manner 2: determining the value of the N based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2; Manner 3: determining the value of the N based on the frequency domain bandwidth X1, the frequency domain bandwidth X2 and a frequency domain repetition factor R.

19. The method of any one of claims 9-18, wherein, in a case where frequency domain resources between the reference signals are adjacent, sequences of the reference signals are adjacent; or, in a case where transmission counter values between the reference signals are adjacent, sequences of the reference signals are adjacent.

20. A communications device, characterized by comprising a module or unit for performing the method of any one of claims 1-19.

21. A communications device, characterized by comprising a processor configured to execute computer program or instructions to cause the apparatus to perform the method of any one of claims 1-19.

22. The apparatus of claim 21, wherein, the apparatus further comprises a memory for storing the computer program or instructions; and / or, the apparatus further comprises a communication interface coupled to the processor, the communication interface configured to input and / or output information.

23. A computer-readable storage medium, characterized in that, The computer readable storage medium has stored thereon computer programs or instructions that, when executed on a communication apparatus, cause the communication apparatus to perform the method of any one of claims 1-19.

24. A computer program product, characterised in that, The computer program product comprises computer programs or instructions for performing the method of any one of claims 1-19. The computer program product comprises computer programs or instructions for performing the method of any one of claims 1-19.

Images