Communication method and communication apparatus

Abstract

Provided in the present application is a communication method. The method may comprise: a terminal device receiving instruction information, and, on the basis of the instruction information, sending a reference signal according to updated frequency domain resources, wherein the instruction information instructs to update frequency domain resources for transmitting the reference signal, and the frequency domain resources comprise at least one of the following: the positions of frequency domain resources for transmitting the reference signal, the number of frequency domain resources for transmitting the reference signal, or the order of frequency domain resources for transmitting the reference signal. In the method, a terminal device can dynamically adjust, by means of instruction information, frequency domain resources for transmitting a reference signal, thereby reducing inter-cell reference signal interference and improving channel estimation accuracy.

Description

Communication method and communication apparatus

[0001] This application claims priority to the Chinese Patent Application No. 202411100779.4, 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., reference signals are transmitted between the sending end and the 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, the network device configures resources for transmitting the uplink reference signal to the terminal device. In a real network environment, the state of the terminal device may change dynamically. When there is a new terminal device accessing the network device, or some terminal devices are interfered by a strong adjacent cell, the network device needs to reconfigure and schedule the resource configuration between the terminal devices through radio resource control (RRC) signaling. Considering that the transmission delay of RRC signaling is large, it may not be able to track the dynamic changes of the terminal device or the dynamic changes of the inter-cell reference signal interference in time, which will cause large inter-cell reference signal interference, thereby affecting the accuracy of channel estimation based on the uplink reference signal by the network device. SUMMARY

[0005] The present application provides a communication method and a communication apparatus, which dynamically adjusts the frequency domain resources of the transmitted reference signal to reduce the interference between inter-cell reference signals, so as to improve the accuracy of channel estimation.

[0006] 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. For ease of description, the following will be described by taking the terminal device as an example.

[0007] The method includes: receiving indication information, the indication information indicating that a frequency domain resource for transmitting a reference signal is updated, the frequency domain resource including at least one of a frequency domain resource position for transmitting the reference signal, a frequency domain resource quantity for transmitting the reference signal, or a frequency domain resource sequence for transmitting the reference signal; and transmitting the reference signal according to the indication information and in the updated frequency domain resource.

[0008] According to the method provided in the present application, the terminal device can dynamically adjust the frequency domain resource for transmitting the reference signal through the indication information, and specifically can adjust one or more of the frequency domain resource position, the frequency domain resource quantity, or the frequency domain resource sequence for transmitting the reference signal, so as to dynamically adjust the frequency domain resource for transmitting the reference signal, reduce the interference between reference signals of different cells, and improve the channel estimation accuracy.

[0009] In combination with the first aspect, in some possible implementation manners, the indication information includes one or more of the following:

[0010] The transmission comb, the comb offset value, the frequency hopping parameter, the frequency hopping pattern index, the frequency domain start position, or the frequency domain offset value.

[0011] In a possible implementation manner, the indication information can be carried in one or more of the following signaling: RRC signaling, medium access control-control element (MAC-CE) signaling, or downlink control information (DCI) signaling.

[0012] In combination with the first aspect, in some possible implementation manners, the indication information includes the transmission comb, the transmission comb being related to the frequency domain resource quantity for transmitting the reference signal, and the transmission comb being used to update one or more of the frequency domain subcarrier quantity, the frequency domain subcarrier position, or the length of the reference signal transmission sequence occupied by the transmission of the reference signal.

[0013] In some possible implementation modes of the first aspect, the indication information comprises a comb offset value, the transmission comb offset value is related to a frequency domain resource position for transmitting the reference signal, and the comb offset value is used to update a frequency domain subcarrier position occupied by the reference signal.

[0014] In some possible implementation modes of the first aspect, the indication information comprises the frequency hopping pattern index, the frequency hopping pattern index is related to a frequency domain resource sequence for transmitting the reference signal, and the frequency hopping pattern index is used to update a sequence of a plurality of frequency domain subbands occupied by the reference signal transmitted continuously for multiple times.

[0015] In some possible implementation modes of the first aspect, the frequency hopping pattern index comprises an index of a first-level frequency hopping pattern and / or an index of a second-level frequency hopping pattern, the first frequency hopping pattern corresponds to a frequency domain bandwidth X1 for transmitting the reference signal for N times, and the second frequency hopping pattern corresponds to a frequency domain bandwidth X2 for transmitting the reference signal for one time, wherein X1, X2, and N are all integers greater than 1, and X2*N=X1.

[0016] In some possible implementation modes of the first aspect, the indication information comprises the frequency domain starting position and / or the frequency domain offset value, the frequency domain starting position and the frequency domain offset value are related to a frequency domain resource sequence for transmitting the reference signal, and the frequency domain starting position and / or the frequency domain offset value are used to update a sequence of a plurality of frequency domain subbands occupied by the reference signal transmitted continuously for multiple times.

[0017] In some possible implementation modes of the first aspect, the receiving the indication information comprises:

[0018] receiving the indication information at a first time point,

[0019] According to the indication information, transmitting the reference signal according to the updated frequency domain resource comprises:

[0020] According to the indication information, transmitting the reference signal according to the updated frequency domain resource at a second time point,

[0021] wherein a time interval between the first time point and the second time point is not zero.

[0022] It should be understood that the time interval between the first time and the second time can be the processing time of the terminal device for determining the updated frequency hopping pattern according to the received indication information. Accordingly, in a possible implementation manner, after the terminal device receives the indication information, and determines the updated frequency hopping pattern according to the indication information, the terminal device can further send response / feedback information, such as acknowledgement (ACK) feedback or negative acknowledgement (NACK) feedback, to the network device.

[0023] In combination with the first aspect, in some possible implementation manners, before the receiving the indication information, the method further includes: receiving configuration information, the configuration information being used to determine a first-level frequency hopping pattern and a second-level frequency hopping pattern for transmitting the reference signal, the first-level frequency hopping pattern corresponding to a frequency domain bandwidth X1 for transmitting the reference signal N times, and the second-level frequency hopping pattern corresponding to a frequency domain bandwidth X2 for transmitting the reference signal once, where X1, X2, and N are all integers greater than 1, and X2*N=X1.

[0024] In a possible implementation manner, before the receiving the indication information, the method further 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 for transmitting the reference signal N times, and the second frequency domain bandwidth X2 being used for transmitting the reference signal once, where X1, X2, and N are all integers greater than 1, and X2*N=X1.

[0025] It should be understood that the N times of the reference signal can be regarded as reference signals belonging to the same group of transmissions. The N times of the reference signal are transmitted in the same group, and the N times of the reference signal transmitted in the same group correspond to the frequency domain bandwidth 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 reference signal transmitted once in the same group.

[0026] Based on the above scheme, the terminal device determines the first-level frequency hopping pattern and the second-level frequency hopping pattern for transmitting the reference signal through the configuration information. In this 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 once is further reduced, the transmission power of the terminal device for transmitting the reference signal once is improved, and the accuracy of the estimation of the channel measurement based on the reference signal is improved.

[0027] In some possible implementation manners of the first aspect, the frequency domain resources occupied by the N times of the reference signal in the transmission 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.

[0028] In some possible implementation manners of the first aspect, the first level frequency hopping pattern is determined based on one or more of the following information:

[0029] the value of N, a counting rule of the reference signal in the transmission, the frequency domain bandwidth X1, or a frequency domain starting position of the N times of the reference signal in the first level frequency hopping pattern.

[0030] In some possible implementation manners of the first aspect, the configuration information includes one or more of the following:

[0031] 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.

[0032] In some possible implementation manners of the first aspect, the value of N is determined based on one or more of the following manners:

[0033] Manner 1: the value of N is obtained from a set of pre-defined values of N based on a protocol;

[0034] Manner 2: the value of N is determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2;

[0035] 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.

[0036] It should be understood that, in the case that the value of N is determined based on the above-mentioned manner 1, the configuration information can include indication information for obtaining the value of N from the set of pre-defined values of N, and the terminal device can obtain the corresponding N from the set of pre-defined values of N through the indication information.

[0037] In some possible implementation manners of the first aspect, the counting rule of the reference signal in the transmission is joint counting of the N times of the reference signal in the transmission, and the joint counting refers to that the N times of the reference signal correspond to the same value of a transmission counter.

[0038] It should be understood that the N times of the reference signal in the transmission correspond to the same value of the transmission counter. Alternatively, it can be understood that the same group of the N times of the reference signal corresponding to the first level frequency hopping pattern correspond to the same value of the transmission counter.

[0039] In a possible implementation manner, the value n of the transmission counter satisfies: SRS , and satisfies:

[0040] or

[0041] wherein, denotes the number of slots in a system frame, n f denotes a system frame number, denotes a slot number in 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.

[0042] With reference to the first aspect, in some possible implementation manners,

[0043] In the case of a frequency domain bandwidth , the pilot sequence length corresponding to the reference signal of a single transmission satisfies:

[0044] In the case of a frequency domain bandwidth , the pilot sequence length corresponding to the reference signal of a single transmission satisfies:

[0045] wherein, m SRS,b denotes the number of frequency domain resource blocks occupied by a single transmission of the reference signal, denotes the number of subcarriers corresponding to each frequency domain resource block, K TC denotes the number of combs, and P F denotes a high-level parameter frequency domain spreading factor.

[0046] With reference to the first 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, and the first-level frequency domain location index n b1 satisfies:

[0047] or

[0048] 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, and b hop ​​indicates a frequency hopping parameter.

[0049] It should be understood that the "·" or "*" involved in the formula of the present application all represent "multiplication", and " / " represents "division".

[0050] In combination with the first aspect, in some possible implementation manners, the first frequency domain bandwidth X1 corresponds to a first-level frequency domain position index n b1 Correspondingly, the first-level frequency domain position index n b1 satisfies:

[0051] Or,

[0052] Wherein, n RRC indicates a frequency domain starting position 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, and the m SRS,b is determined according to the second frequency domain bandwidth X2, n SRS indicates a value of a transmission counter corresponding to the reference signal, b hop indicates a frequency hopping parameter.

[0053] In combination with the first aspect, in some possible implementation manners, the configuration information includes second-level frequency domain position indexes n b2 corresponding to the second-level frequency hopping pattern, and the second-level frequency domain position indexes n b2 are used to determine N frequency domain resource positions respectively occupied by N transmissions of the reference signal.

[0054] In combination with the first aspect, in some possible implementation manners, 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 is used to determine a frequency domain resource position of a single transmission of the reference signal in the N transmissions of the reference signal.

[0055] In combination with the first aspect, in some possible implementation manners, 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 of the ith group of the jth transmission, and the index n b (i,j) satisfies: n b (i,j) = n b1 *N+n b2 ;

[0056] Or,

[0057] wherein the first-level frequency-domain position index n b1 satisfies:

[0058] or,

[0059] the second-level frequency-domain position index n b2 is used to determine N frequency-domain resource positions occupied by N transmissions of the reference signal respectively, 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 i is equal to the value of n SRS , values of the transmission counter corresponding to N transmissions of the reference signal in the first-level frequency hopping pattern are the same, the j represents any one of N transmissions of the reference signal in the same group corresponding to the i, the first-level frequency-domain position index n b1 corresponding to N transmissions of the reference signal in the same group is the same, and the second-level frequency-domain position index n b2 corresponding to N transmissions of the reference signal in the same group is different.

[0060] With reference to the first aspect, in some possible implementation manners, according to the configuration information, the reference signal is transmitted, including:

[0061] based on 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) of a frequency-domain resource position of the reference signal transmitted for the i-th time in the j-th group is obtained;

[0062] the reference signal is transmitted at the frequency-domain resource position,

[0063] wherein the index n b (i,j) satisfies: n b (i,j) = n b1 *N+n b2 ;

[0064] or,

[0065] the first-level frequency-domain position index n b1 satisfies:

[0066] Or,

[0067] wherein, the second level frequency domain position index n b2 for determining the frequency domain resource position of the reference signal of each transmission of the N times of the reference signal, 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 the reference signal of each transmission, 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 the N times of the reference signal transmitted in the same group corresponding to the i, the first level frequency domain position index n b1 of the N times of the reference signal transmitted in the same group is the same, and the second level frequency domain position index n b2 of the N times of the reference signal transmitted in the same group is different.

[0068] It should be understood that the first level frequency domain position index can be understood as a frequency domain position index for determining a group level (for example, the N times of the reference signal can be regarded as the same group), and the second level frequency domain position index can be understood as a specific frequency domain position index for determining each reference signal in the N times of the reference signal in the group. The first level frequency domain position index and the second level frequency domain position index can be used to determine the specific frequency domain resource position of each transmission of the reference signal in the N times of the reference signal.

[0069] In combination with the first aspect, in some possible implementation manners, when the frequency domain resources of the reference signals are adjacent, the sequence of the reference signals is adjacent; or, when the values of the transmission counters between the reference signals are adjacent, the sequence of the uplink reference signals is adjacent.

[0070] In combination with the first aspect, in some possible implementation manners, the configuration information includes a first parameter, the first parameter is used to determine at least one of the first level frequency hopping pattern and the second level frequency hopping pattern, and the first parameter 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.

[0071] 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 of the first level frequency hopping pattern and the second level frequency hopping pattern. For specific examples of how to determine the frequency hopping pattern, please refer to the related description in the specific embodiments.

[0072] In a second aspect, a communication method is provided. The method can be performed by a network side, or can also be performed by other subjects, which are not limited in the present application. The network side includes a network device, or a functional module, a communication module, a chip, a chip 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 way of example of being performed by a network device.

[0073] The method includes: determining indication information, the indication information indicating that a frequency domain resource for transmitting a reference signal is updated, the frequency domain resource including at least one of a frequency domain resource position for transmitting the reference signal, a frequency domain resource quantity for transmitting the reference signal, or a frequency domain resource sequence for transmitting the reference signal; and transmitting the indication information.

[0074] In a possible implementation manner, the indication information can be carried in one or more of the following signaling: RRC signaling, medium access control-control element (MAC-CE or MAC-CE) signaling, or downlink control information (DCI) signaling. The MAC-CE can also be referred to as media access control-control element (media access control-control element).

[0075] According to the method provided in the present application, the network device can dynamically adjust the frequency domain resource for transmitting the reference signal by transmitting the indication information, and specifically can adjust one or more of the frequency domain resource position, the frequency domain resource quantity, or the frequency domain resource sequence for transmitting the reference signal, thereby dynamically adjusting the frequency domain resource for transmitting the reference signal, reducing the interference between reference signals of different cells, and improving the channel estimation accuracy.

[0076] In combination with the second aspect, in some possible implementation manners, the indication information includes one or more of the following:

[0077] a transmission comb, a comb offset value, a frequency hopping parameter, a frequency hopping pattern index, a frequency domain start position, or a frequency domain offset value.

[0078] In a possible implementation manner, the indication information can be carried in one or more of the following signaling: RRC signaling, MAC-CE signaling, or DCI signaling.

[0079] With reference to the second aspect, in some possible implementation manners, the indication information comprises the transmission comb, the transmission comb being related to a quantity of frequency domain resources for transmitting the reference signal, and the transmission comb being used for updating one or more of a quantity of frequency domain subcarriers occupied by the reference signal, a position of the frequency domain subcarriers, or a length of a transmission sequence of the reference signal.

[0080] With reference to the second aspect, in some possible implementation manners, the indication information comprises a comb offset value, the transmission comb offset value being related to a position of a frequency domain resource for transmitting the reference signal, and the comb offset value being used for updating a position of a frequency domain subcarrier occupied by the reference signal.

[0081] With reference to the second aspect, in some possible implementation manners, the indication information comprises the frequency hopping pattern index, the frequency hopping pattern index being related to an order of frequency domain resources for transmitting the reference signal, and the frequency hopping pattern index being used for updating an order of a plurality of frequency domain subbands occupied by the reference signal transmitted continuously for a plurality of times.

[0082] With reference to the second aspect, in some possible implementation manners, the frequency hopping pattern index comprises an index of a first-level frequency hopping pattern and / or an index of a second-level frequency hopping pattern, the first frequency hopping pattern corresponding to a frequency domain bandwidth X1 for transmitting the reference signal for N times, and the second frequency hopping pattern corresponding to a frequency domain bandwidth X2 for transmitting the reference signal for one time, where X1, X2, and N are integers greater than 1, and X2*N=X1.

[0083] With reference to the second aspect, in some possible implementation manners, the indication information comprises the frequency domain starting position and / or the frequency domain offset value, the frequency domain starting position and the frequency domain offset value being related to an order of frequency domain resources for transmitting the reference signal, and the frequency domain starting position and / or the frequency domain offset value being used for updating an order of a plurality of frequency domain subbands occupied by the reference signal transmitted continuously for a plurality of times.

[0084] With reference to the second aspect, in some possible implementation manners, before the indication information is sent, the method further comprises:

[0085] sending configuration information, the configuration information being used for determining a first-level frequency hopping pattern and a second-level frequency hopping pattern for transmitting the reference signal, the first-level frequency hopping pattern corresponding to a frequency domain bandwidth X1 for transmitting the reference signal for N times, and the second-level frequency hopping pattern corresponding to a frequency domain bandwidth X2 for transmitting the reference signal for one time, where X1, X2, and N are integers greater than 1, and X2*N=X1.

[0086] In some possible implementation manners, before the sending the indication information, the method further includes: sending 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 the reference signal once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0087] It should be understood that the N times of the reference signals can be regarded as reference signals belonging to the same group of transmissions. The N times of the reference signals are transmitted in the same group, and the N times of the reference signals in the same group correspond to the frequency domain bandwidth 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 signals transmitted in the same group, and the second-level frequency hopping pattern can be used to determine the frequency domain bandwidth X2 of the reference signal transmitted once in the same group.

[0088] In some possible implementation manners, the first-level frequency hopping pattern is determined based on one or more of the following information:

[0089] the value of N, the counting rule of transmitting the reference signals, the frequency domain bandwidth X1, or the frequency domain starting position of transmitting the N times of the reference signals in the first-level frequency hopping pattern.

[0090] In some possible implementation manners, the configuration information includes one or more of the following:

[0091] the value of N, the frequency hopping parameter, the frequency hopping pattern index, the frequency domain starting position, the frequency domain offset, the transmission comb, or the comb offset.

[0092] In some possible implementation manners, the value of N is determined based on one or more of the following manners:

[0093] Manner 1: the value of N is obtained from a set of predefined values of N based on a protocol;

[0094] Manner 2: the value of N is determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2;

[0095] 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.

[0096] It should be understood that, in the case where the value of N is determined based on the above-mentioned manner 1, the configuration information can include indication information used to obtain the value of N from the set of predefined values of N, and the terminal device can obtain the corresponding N from the set of predefined values of N through the indication information.

[0097] In conjunction with the second aspect, in some possible implementations, the counting rule for transmitting the reference signal is to jointly count the N transmitted reference signals, whereby the joint counting refers to the N transmitted reference signals corresponding to the value of the same transmission counter.

[0098] It should be understood that the N transmitted reference signals correspond to the same count value in the transmission counter. Alternatively, it can be understood as: the same set of N transmitted reference signals corresponding to the first-level frequency hopping pattern corresponds to the same count value in the transmission counter.

[0099] In one possible implementation, the value of the transmission counter is n. SRS ,satisfy:

[0100] or

[0101] in, This represents the number of time slots within a system frame, where nf represents the system frame number. T represents the slot number within a system frame. offset T represents the time slot offset value. SRS represents the time slot period, l' represents the symbol number, and R represents the symbol repetition factor.

[0102] In conjunction with the second aspect, among some possible implementation methods,

[0103] In frequency domain bandwidth In the case of a single transmission, the length of the pilot sequence corresponding to the reference signal is... satisfy:

[0104] In frequency domain bandwidth In the case of a single transmission, the length of the pilot sequence corresponding to the reference signal is... satisfy:

[0105] Where, m SRS,b This indicates the number of frequency domain resource blocks occupied by a single transmission of the reference signal. K represents the number of subcarriers corresponding to each frequency domain resource block. TC P represents the number of combs. F This represents the frequency domain spread factor of the higher-level parameters.

[0106] In conjunction with the second aspect, in some possible implementations, the configuration information includes a first-level frequency domain position index n for indicating the first-level frequency hopping pattern. b1 The first-level frequency domain position index n b1 ,satisfy:

[0107] or,

[0108] wherein, n RRC denotes a frequency domain starting position index of the reference signal, m SRS,b denotes a number of frequency domain resource blocks occupied by a single transmission of the reference signal, n SRS denotes a value of a transmission counter corresponding to the reference signal, b hop denotes a frequency hopping parameter.

[0109] With reference to the second 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:

[0110] or,

[0111] wherein, n RRC denotes a frequency domain starting position index of the reference signal, m SRS,b denotes a 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 denotes a value of a transmission counter corresponding to the reference signal, b hop denotes a frequency hopping parameter.

[0112] With reference to the second aspect, in some possible implementation manners, the configuration information includes a second level frequency domain position index n b2 corresponding to the second level frequency hopping pattern, and 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.

[0113] With reference to the second aspect, 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 a frequency domain resource position of a single transmission of the reference signal in the N transmissions of the reference signal.

[0114] With reference to the second aspect, in some possible implementation manners, 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 of a frequency domain resource position of the reference signal of the i-th group of the j-th transmission.(i,j), the index n b (i,j), satisfying: n b (i,j) = n b1 *N+n b2 ;

[0115] or,

[0116] wherein the first-level frequency domain position index n b1 satisfies:

[0117] or,

[0118] the second-level frequency domain position index n b2 is used for determining N frequency domain resource positions respectively occupied by 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 is equal to the value of the n SRS , the first-level frequency hopping pattern is transmitted, the value of the transmission counter corresponding to N transmissions of the reference signal is same, the j represents any one of N transmissions of the reference signal in the same group corresponding to the i, the first-level frequency domain position index n b1 of N transmissions of the reference signal in the same group is same, and the second-level frequency domain position index n b2 of N transmissions of the reference signal in the same group is different.

[0119] In combination with the second aspect, 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 for obtaining an index n b (i,j) of a frequency domain resource position of the reference signal transmitted for the i-th group and the j-th time, the index n b (i,j) satisfies: n b (i,j) = n b1 *N+n b2 ;

[0120] or,

[0121] the first-level frequency domain position index n b1 satisfies:

[0122] or

[0123] wherein the second level frequency domain position index n b2 for determining the frequency domain resource position of the reference signal of each transmission of the N transmissions of the reference signal, the n RRC denotes the frequency domain starting position index of the reference signal, m SRS,b denotes the number of frequency domain resource blocks occupied by each transmission of the reference signal, n SRS denotes the value of the transmission counter corresponding to the reference signal, b hop denotes the frequency hopping parameter, the value of the i is equal to the value of the n SRS , the j denotes any one of the N transmissions of the reference signal in the same group corresponding to the i, the first level frequency domain position index n b1 of the N transmissions of the reference signal in the same group is the same, and the second level frequency domain position index n b2 of the N transmissions of the reference signal in the same group is different.

[0124] It should be understood that the first level frequency domain position index can be understood as a frequency domain position index used for determining the group level (for example, the N transmissions of the reference signal can be regarded as the same group), and the second level frequency domain position index can be understood as a specific frequency domain position index used for determining each transmission of the reference signal in the N transmissions of the reference signal in the group. The first level frequency domain position index and the second level frequency domain position index can be used to determine the specific frequency domain resource position of each transmission of the N transmissions of the reference signal.

[0125] In combination with the second aspect, in some possible implementation manners, in the case that the frequency domain resources between the reference signals are adjacent, the sequence of the reference signals is adjacent; or

[0126] in the case that the values of the transmission counter between the reference signals are adjacent, the sequence of the uplink reference signals is adjacent.

[0127] In combination with the second aspect, in some possible implementation manners, the configuration information comprises a first parameter, the first parameter is used for determining at least one of the first level frequency hopping pattern and the second level frequency hopping pattern, 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.

[0128] In a third aspect, a communication apparatus is provided. The apparatus is configured to execute the method in any possible implementation of the first aspect or the second aspect. Specifically, the apparatus can include a unit and / or module configured to execute the method in any possible implementation of the first aspect or the second aspect, such as a processing unit and / or a communication unit.

[0129] In an implementation, 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.

[0130] In another implementation, the apparatus is a chip, chip system or circuit, or a communication module for a communication device, such as a terminal device, or a network device. When the apparatus is a chip, chip system or 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 circuitry, etc. on the chip, chip system or circuit; and the processing unit can be at least one processor, a processing circuit or a logic circuit, etc.

[0131] In a fourth aspect, a communication apparatus is provided. The apparatus includes at least one processor configured to execute computer programs or instructions to perform the method in any possible implementation of the first aspect or the second aspect. Optionally, the apparatus further includes a memory configured to store the computer programs or instructions. Optionally, the apparatus further includes a communication interface coupled to the processor, and configured to input the computer programs or instructions to the processor, or output information in the processor.

[0132] In an implementation, the apparatus is a communication device, such as a terminal device, or a network device.

[0133] In another implementation, the apparatus is a chip, chip system or circuit, or a communication module for a communication device, such as a terminal device, or a network device.

[0134] In a fifth aspect, a processor is provided. The processor is configured to perform the method in the first aspect or the second aspect.

[0135] For the sending and obtaining / receiving operations involved in the processor, if there is no special description, or if it does not contradict the actual role or inherent logic in the related description, it can be understood as the processor output and receive, input, etc. operations, and can also be understood as the sending and receiving operations performed by the radio frequency circuit and the antenna, which are not limited in the present application.

[0136] Optionally, the apparatus further comprises a memory for storing a program; and the at least one processor is configured to execute the computer program or instructions in the memory.

[0137] Optionally, the apparatus further comprises a communication interface. The communication interface is coupled to the processor and is configured to input information to the processor or output information from the processor.

[0138] In a sixth aspect, a computer readable storage medium is provided. The computer readable medium stores program codes for execution by an apparatus. The program codes include codes for performing the method in any possible implementation of the first aspect or the second aspect.

[0139] In a seventh aspect, a computer program product containing instructions that, when executed on a computer, cause the computer to perform the method in any possible implementation of the first aspect or the second aspect.

[0140] In an eighth aspect, a chip is provided. The chip includes a processor and a communication interface. The processor is configured to read instructions from a memory via the communication interface and perform the method in any possible implementation of the first aspect or the second aspect.

[0141] Optionally, the chip is a Modem chip, a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core.

[0142] Optionally, as an implementation, the chip further includes a memory. The memory stores computer programs or instructions. The processor is configured to execute the computer programs or instructions in the memory. When the computer programs or instructions are executed, the processor is configured to perform the method in any possible implementation of the first aspect or the second aspect.

[0143] In a ninth aspect, a computer program product containing instructions that, when executed on a computer, cause the computer to perform the method in any possible implementation of the first aspect or the second aspect.

[0144] In a tenth aspect, a communication system is provided. The communication system includes the terminal device and the network device as described above. BRIEF DESCRIPTION OF DRAWINGS

[0145] FIG. 1 is a schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0146] FIG. 2 is another schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0147] FIG. 3 is a diagram illustrating frequency hopping transmission of SRS.

[0148] FIG. 4 is a diagram illustrating another frequency hopping transmission of SRS.

[0149] FIG. 5 is a diagram illustrating a tree structure corresponding to C SRS = 18.

[0150] FIG. 6 is a diagram illustrating a communication method 600 according to an embodiment of the present application.

[0151] FIG. 7 is a diagram illustrating frequency hopping transmission of SRS according to an embodiment of the present application.

[0152] FIG. 8 is a diagram illustrating another frequency hopping transmission of SRS according to an embodiment of the present application.

[0153] FIG. 9 is a diagram illustrating another frequency hopping transmission of SRS according to an embodiment of the present application.

[0154] FIG. 10 is a diagram illustrating a first level frequency hopping pattern and a second level frequency hopping pattern according to an embodiment of the present application.

[0155] FIG. 11 is a diagram illustrating a second level frequency hopping pattern according to an embodiment of the present application.

[0156] FIG. 12 is a diagram illustrating a communication apparatus 1200 according to an embodiment of the present application.

[0157] FIG. 13 is a diagram illustrating another communication apparatus 1300 according to an embodiment of the present application.

[0158] FIG. 14 is a diagram illustrating a chip system 1400 according to an embodiment of the present application. DETAILED DESCRIPTION

[0159] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0160] The technical solutions provided in the present application can be applied to various communication systems, for example, 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, such as a future mobile communication system. 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 an internet of things (IoT) communication system. The technical solutions provided in the present application can also be applied to a low-frequency scenario, a high-frequency scenario, a terahertz, and the like.

[0161] The technical solutions provided in the present application can also be applied to a non-terrestrial network (NTN) system, such as an inter-satellite communication and a satellite communication. As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides a communication service 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 be an unmanned aerial vehicle, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, a high-orbit satellite, and the like. The satellite can also be a non-ground base station or a non-ground device.

[0162] 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.

[0163] 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 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.

[0164] 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.

[0165] 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.

[0166] 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 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 adopted by the network device.

[0167] 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 serve as a device communicating with another base station.

[0168] 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.

[0169] 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.

[0170] 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).

[0171] 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.

[0172] 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.

[0173] 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.

[0174] A DU and a RU can or can not be co-located. A DU and a RU exchange control plane information 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.

[0175] 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 the 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 the PHY layer that is closer to a mid-RF side.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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 embodiments of the present application do not limit the scenarios in which the network device and the terminal device are located. 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 (e.g., 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.

[0180] First, a communication system suitable for the embodiments of the present application is briefly introduced as follows.

[0181] Referring to FIG. 1, FIG. 1 is a schematic diagram of a wireless communication system suitable for the embodiments of the present application.

[0182] 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.

[0183] 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.

[0184] Referring to FIG. 2, FIG. 2 is another schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0185] 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, 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, 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, and the BBU and the RU can or can not be 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.

[0186] FIG. 2 is only a schematic diagram, and the wireless communication system can further include other devices, which are not shown in FIG. 2.

[0187] 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.

[0188] 1. Reference signal (RS)

[0189] 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 a process of reconstructing or recovering a received signal to compensate for signal distortion caused by channel fading and noise, which uses a reference signal known by the transmitter and the receiver to obtain time-domain and frequency-domain variations of the channel. The reference signal is also called a reference signal, which is distributed in different resource elements (REs) in the time-frequency two-dimensional space within an orthogonal frequency division multiplexing (OFDM) symbol, and has a known amplitude and phase.

[0190] At the physical layer, uplink communication can include transmission of uplink physical channels and uplink signals. The uplink physical channels include a random access channel (PRACH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), etc., and the uplink signals include a sounding reference signal (SRS), a physical uplink control channel demodulation reference signal (PUCCH-DMRS), a physical uplink shared channel demodulation reference signal (PUSCH-DMRS), a demodulation reference signal (DMRS), a phase tracking signal (PTRS), a positioning SRS or SRS for positioning, etc.

[0191] 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.

[0192] 2. Resource.

[0193] 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.

[0194] 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.

[0195] In the embodiments of the present application, a reference signal 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 resource is taken as an example of a channel state information reference signal (CSI-RS) resource, and the CSI-RS resource is also written as a channel state information reference signal (CSIRS) resource in the present document. The CSIRS 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.

[0196] 3. Sounding reference signal.

[0197] 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.

[0198] 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, nonCodebook, 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.

[0199] 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.

[0200] 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 MAC-CE signaling. The configuration information (for example, the high-layer parameter SRS-Resource) of each 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 the configuration parameters 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.

[0201] Table 1 SRS resource configuration parameters

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] In another possible implementation manner, the terminal device can transmit SRS in a frequency hopping manner, that is, multiple SRS transmitted by one terminal device can switch between different frequency bands in the frequency domain resource.

[0210] It should be understood that frequency hopping refers to switching transmission of multiple SRS of a terminal device between different frequency bands in the frequency domain resource.

[0211] For example, when the transmission bandwidth of a single SRS transmission of a 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 using frequency hopping, and use different parts of the SRS transmission bandwidth to transmit SRS.

[0212] 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 transmission of the terminal device can be reduced to improve the frequency power spectral density of the SRS, thereby ensuring the uplink power of a single SRS transmission and improving the accuracy of the channel state information obtained by the network device.

[0213] 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.

[0214] Specifically, the introduction of frequency hopping transmission of SRS is as follows:

[0215] 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.

[0216] The determination process of the time domain position of SRS is as follows:

[0217] 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.

[0218] According to repetitionFactor, it can be seen that:

[0219] When R = N S , that is, SRS transmission in the time slot is not supported in the frequency hopping manner;

[0220] 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;

[0221] 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);

[0222] 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);

[0223] The determination process of the frequency domain position of SRS is as follows:

[0224] For example, network devices configure SRS resources for terminal devices via RRC signaling. The RRC signaling indicates the number of ports included in the SRS resource, its frequency and time domain locations, the period used, comb teeth, cyclic shift value, and sequence identifier (ID). The frequency domain location of the SRS resource is determined by a set of frequency domain parameters in the RRC signaling (in existing 3GPP protocols, these parameters include n...). RRC n shift B SRS C SRS b hop Terminal devices can determine the bandwidth and starting position of the frequency domain occupied by SRS through these frequency domain parameters and the rules predetermined by the protocol.

[0225] Among them, C SRS Index number B configured for cell-specific SRS bandwidth. SRS Configure an index number for the user's specific SRS bandwidth, b hop Indicates whether SRS frequency hopping is performed (or in other words, indicates the frequency hopping bandwidth occupied by SRS on one symbol), n shift The offset value that can be used for SRS transmission, starting at a low frequency range in the uplink system bandwidth (or indicating the starting frequency domain position of the SRS frequency hopping bandwidth), n RRC Indicates the frequency domain starting position index of the user's SRS (or the frequency domain position of the starting frequency hopping subband of the SRS).

[0226] The starting position of the SRS frequency domain is determined by the parameter n configured for the terminal device by the network device. RRC and parameter n shift Determine the overall frequency domain starting position of the SRS.

[0227] SRS configured bandwidth (or frequency hopping bandwidth): The terminal device is configured with parameters b by the network device according to the parameters b configured for the terminal device. hop and parameter C SRS And the number of RBs m that the SRS accounts for in total is determined in Table 3 below. SRS,b′ , where b′=b hop For example, suppose b hop =0, C SRS =9, by looking up Table 3, we can determine m SRS,b′ =32.

[0228] Bandwidth occupied by each symbol of SRS (or bandwidth occupied by a frequency hopping subband): The terminal device uses parameter B configured by the network device for the terminal device. SRS and parameter C SRS And the number of RBs m that SRS occupies on each symbol is determined in Table 3 below. SRS,b, where b = B SRS For example, assume B SRS = 2, C SRS = 9, by looking up Table 3, it can be determined that m SRS,b = 8.

[0229] 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.

[0230] 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 of the configured bandwidth of the SRS resource (that is, one frequency hopping sub-band), and the terminal device transmits SRS multiple times in one frequency hopping period can cover the entire configured bandwidth of the SRS resource.

[0231] The current SRS transmission mode is as follows:

[0232] (1) If b hop ≥ B SRS (non-frequency hopping), the value of the frequency domain position index n b is fixed (constant) and satisfies:

[0233] (2) If b hop < B SRS (frequency hopping), the value of the frequency domain position index n b is fixed (constant) and satisfies:

[0234] wherein,

[0235] n SRS is the SRS transmission number specific to the terminal device (the transmission count of the terminal device), n SRS satisfies:

[0236] wherein, the related descriptions and specific values of the specific parameters involved in the above formula can be referred to Table 2 as follows:

[0237] Table 2

[0238] 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.

[0239] In combination with the example in Figure 4 described above, the frequency hopping number of one frequency hopping period is the number of times that the terminal device sends the SRS in one frequency hopping period. For example, the frequency hopping number in Figure 4 is 4.

[0240] Optionally, the frequency hopping number is equal to Wherein, N b According to C SRS and Table 3.

[0241] For example, assuming that b hop = 0, C SRS = 9, and B SRS = 2, the frequency hopping number is equal to 2 x 2 = 4.

[0242] Table 3

[0243] 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.

[0244] 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 transmission, 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.

[0245] In addition, based on the existing NR protocol, the reference signal resource allocation of the terminal device is generally configured to the terminal device by the network device through RRC. Since the terminal devices to be served in the network and the number of terminal devices both dynamically change, when a new terminal device is connected to the network or some terminal devices are interfered by a stronger adjacent cell, the reference signal resource allocation between the terminal devices needs to be scheduled through RRC reconfiguration. However, due to the large delay of RRC signaling, the dynamic changes of the served terminal devices or the dynamic changes of the inter-cell reference signal interference cannot be tracked in time, resulting in large inter-cell reference signal interference and affecting the accuracy of channel estimation based on the uplink reference signal by the network device.

[0246] Therefore, the present application proposes a communication method, which reduces the interference between inter-cell reference signals to improve the accuracy of channel estimation.

[0247] Before introducing the scheme of the present application, the following points are explained.

[0248] (1) In the present application, "indication" can include direct indication, indirect indication, explicit indication, and implicit indication. When it is described 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.

[0249] In the present application, the information indicated by the indication information is referred to as the 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 pre-agreed (for example, the protocol stipulates) arrangement order of each information, thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately in multiple sub-information, and the sending period and / or sending time of these sub-information can be the same or different.

[0250] (2) In the present application, “sending” and “receiving” represent the direction of signal transmission. For example, “sending information to XX” can be understood as that the destination of the information is XX, which can include direct transmission through the air interface, and also includes 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, and also can include indirect reception from YY through the air interface by other units or modules. “Sending” can also be understood as the “output” of the chip interface, and “receiving” can also be understood as the “input” of the chip interface. In other words, sending and receiving 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 within a device through a bus, wire or interface.

[0251] (3) In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0252] (4) In the present application, “first”, “second”, and “#1”, “#2”, and “#n1”, “#n2”, etc. are only for convenience of description, used for distinguishing 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, so as to be able to describe schemes other than the embodiments of the present application.

[0253] (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 standard protocols in the field of communication, which can include 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. “Preconfiguration” can be realized by pre-saving corresponding codes, tables or other ways that can be used to indicate related information in devices, and the present application does not limit its implementation manner.

[0254] (6) In this application, the words "exemplary", "for example", and the like are used to mean example, illustration, or instance, and do not imply any preference or superiority. In fact, the use of the word "exemplary" is intended to present concepts in a concrete manner. In the embodiments of this application, "of", "corresponding", and "corresponding" are sometimes mixed, and it should be pointed out that when their differences are not emphasized, the meanings expressed are consistent.

[0255] The method provided by the embodiments of the present application will be described in detail below with reference to the drawings. The embodiments provided by the present application can be applied to the communication system shown in FIG. 1, without limitation.

[0256] It should be understood that the embodiments of the present application can be applied to the communication scenarios 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 logic node, a logic module or software capable of realizing all or part of the functions 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) in the terminal device responsible for communication functions, or a logic node, a logic module or software capable of realizing all or part of the functions 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 again.

[0257] It should also be understood that in the following embodiments, the terminal device and the network device are exemplarily described. Among them, 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.

[0258] 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.

[0259] 601, the network device sends configuration information to the terminal device, and correspondingly, the terminal device receives the configuration information of the network device.

[0260] 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. Among them, the first-level frequency hopping pattern corresponds to the frequency domain bandwidth X1 of the multiple (for example, N times) transmission of the reference signal, and the second-level frequency hopping pattern corresponds to the frequency domain bandwidth X2 of the single transmission of the reference signal. Wherein X1, X2, N are all integers greater than 1, and X2*N=X1.

[0261] 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).

[0262] It should also be understood that the reference signal in the embodiments of the present application is taken as an example of SRS to introduce the technical solutions in the embodiments of the present application. Of course, the method provided by the present application can also be applied to other reference signals, which will not be enumerated one by one.

[0263] It should also be understood that the configuration information can be transmitted by RRC configuration message, RRC reconfiguration message, MAC-CE, or DCI, or by separate signaling.

[0264] In a possible implementation manner, the configuration information includes a first parameter, and the first parameter includes one or more of the following parameters: the value of N, the frequency domain starting position, the frequency domain offset value, the frequency hopping parameter, the transmission comb, the comb offset value, or the 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.

[0265] As an example, the first parameter is used to determine the first-level frequency hopping pattern.

[0266] 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 resource of the multiple transmissions of the SRS in the first-level frequency hopping pattern; the comb offset value can be used to determine the position of the frequency domain resource for the multiple transmissions of the SRS in the first-level frequency hopping pattern; the frequency hopping pattern index corresponds to the first-level frequency hopping pattern one by one, and the frequency hopping pattern index is used to determine the position of the frequency domain resource of the SRS corresponding to the first-level frequency hopping pattern.

[0267] 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.hop and C SRS and the number of RBs occupied by the SRS as a whole determined by Table 3 above SRS,b′ , i.e., the configuration bandwidth (or frequency hopping bandwidth) of the SRS, where b' = b hop The terminal device can determine the number of RBs occupied by the SRS in each symbol according to the parameter B SRS and C SRS and the number of RBs occupied by the SRS in each symbol determined by Table 3 above SRS,b , i.e., the number of RBs occupied by the frequency hopping sub-band, where b = B SRS

[0268] wherein 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). Exemplarily, any two frequency hopping sub-bands do not overlap, i.e., there is no same RB between any two frequency hopping sub-bands. Wherein 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 in the one or more frequency hopping sub-bands except the first frequency hopping sub-band, it can be seen that the first frequency hopping sub-band is different from the second frequency hopping sub-band.

[0269] It should be understood that the frequency domain bandwidth corresponding to each frequency hopping sub-band (e.g., the first frequency hopping sub-band, the second frequency hopping sub-band) in the one or more frequency hopping sub-bands can be understood as the frequency domain bandwidth corresponding to a first-level frequency hopping pattern, for example, the frequency domain bandwidth is X1.

[0270] It should also be understood that the first parameter is used to determine the specific manner of the first-level frequency hopping pattern, which can refer to the above-mentioned related content of determining the specific location of the frequency domain resource for transmitting the SRS in FIG. 3 and FIG. 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).

[0271] 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 N times of reference signals transmitted in the first-level frequency hopping pattern.

[0272] wherein the value of N is the number of transmissions of the SRS within the same group.

[0273] It should be understood that the N times of SRS transmitted 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.

[0274] It should also be understood that when N = 1, a single SRS transmission of a single symbol can be counted as one SRS transmission; when N > 1, multiple SRS transmissions of multiple symbols can be counted as one SRS transmission.

[0275] 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. How the terminal device specifically determines the value of N can be referred to the detailed introduction in step 602, which will not be repeated here.

[0276] Wherein, the counting rule of the transmission counter of the first level frequency hopping pattern sending SRS is used to determine the transmission count of the current SRS.

[0277] It should be understood that the transmission counter is determined according to one or more of the values of N, n f , T offset , T SRS , l' and R. Wherein, n f represents the number of slots in a system frame, n 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.

[0278] It should be understood that the transmission counter can determine the transmission count of the current SRS in one or more of the following ways:

[0279] Method one: independently counting the transmission of a single SRS, the transmission count of the SRS, the corresponding counting value n SRS of the transmission counter can satisfy the following formula:

[0280] Method two: jointly counting multiple SRS transmissions, that is, grouping multiple SRSs with consecutive transmission counts into a group, and the SRSs in the same group correspond to the same SRS transmission count, the corresponding counting value n SRS of the transmission counter can satisfy the following formula:

[0281] Method three: jointly counting multiple SRS transmissions, that is, grouping multiple SRSs with consecutive transmission counts into a group, and the SRSs in the same group correspond to the same SRS transmission count, the corresponding counting value n SRS of the transmission counter can satisfy the following formula:

[0282] wherein the frequency domain bandwidth X1 of each SRS transmission can be determined according to m SRS,b , K TC , P F and N.

[0283] For example, the frequency domain bandwidth X1 of each SRS transmission can be determined in one or more of the following ways, to determine the pilot sequence of SRS transmission:

[0284] Way four: based on the value of parameter B SRS , C SRS , look up Table 3 above to determine the frequency domain bandwidth X1 = M SRS of each SRS transmission, and the pilot sequence length of single SRS transmission satisfies:

[0285] Way five: based on the value of parameter B SRS , C SRS , N, look up Table 3 above to determine the frequency domain bandwidth X1 = N*M SRS of each SRS transmission, and the pilot sequence length of single SRS transmission satisfies:

[0286] Way six: based on the value of parameter B SRS , C SRS , N, look up Table 3 above to determine the frequency domain bandwidth M = N*M SRS of each SRS transmission, and the pilot sequence length of all or part of SRS transmission in each group can be jointly designed. For example, the pilot sequence length of N times of SRS transmission in each group may satisfy the following formula:

[0287] wherein the frequency domain starting position of each SRS transmission can be used to determine the frequency domain starting position of SRS transmission in the same group.

[0288] It should be understood that the frequency domain starting position is related to SRS transmission count. Assuming that multiple SRS transmissions in the same group are jointly counted, i.e., multiple SRS transmissions in the same group correspond to the same SRS transmission count, then the multiple SRS transmissions in the same SRS transmission group occupy the same frequency domain starting position and different frequency domain offset positions.

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

[0290] 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. 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 (for example, x times) transmission SRS.

[0291] 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 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 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 SRS in the second level frequency hopping pattern.

[0292] 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 SRS in the second level frequency hopping pattern according to the first parameter will be exemplarily introduced below:

[0293] C SRS = 63, b hop = 0, B SRS = 1, that is, the total SRS transmission bandwidth = 272 RB, which is completed by frequency hopping. For example, the SRS is transmitted by frequency hopping in one or more of the following ways:

[0294] Way seven: one level frequency hopping.

[0295] Referring to FIG. 7, assuming that each symbol SRS transmission occupies 16 RBs, 17 times of frequency hopping is 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 times of frequency hopping.

[0296] Way eight: two level frequency hopping.

[0297] Among them, the second level frequency domain position index n b2.

[0298] Assuming that the bandwidth occupied by a single SRS transmission is equal to the parameter m SRS,b In the case of the bandwidth determined by Table 3:

[0299] The N adjacent SRS transmissions are divided into the same group, and the frequency domain resources occupied by the multiple SRS transmissions in the same group are adjacent. The transmission counter of the multiple SRS transmissions in the same group is counted only once, and the multiple SRS transmissions are jointly counted by defining a new SRS transmission counting method. Among them, the multiple SRS transmissions with continuous transmission counting are divided into the same group, and the multiple SRS transmissions in the same group correspond to the same SRS counting. The value of the counter in the transmission counter is 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:

[0300] or

[0301] wherein the first-level frequency hopping pattern corresponds to the first-level frequency domain position index n b1 , and the first-level frequency domain position index n b1 may be used to determine the first frequency domain position. The first-level frequency domain position may be used to indicate the frequency domain position where the SRS in the same group is transmitted. The first-level frequency domain position is the frequency domain position where multiple (for example, N) 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:

[0302] wherein the second-level frequency hopping pattern corresponds to the second-level frequency domain position index n b2 , and the second-level frequency domain position index n b2 is used to determine the 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 the frequency domain position of each transmission of the N times of reference signals in the same group.

[0303] The frequency domain resource position occupied by the multiple transmissions of the SRS in the same group in 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 nb2 The specific position of the frequency domain resource occupied by the multiple times of SRS transmission in the same group can be indicated to the terminal device in the configuration information for the terminal device to determine.

[0304] Suppose that 4 times of SRS transmission in the same group in the first-level frequency hopping pattern, i.e., N = 4, the 4 times of SRS transmission occupy 4 frequency domain resource positions respectively, as shown in Table 4:

[0305] Table 4

[0306] 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 in each group b2 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 respectively; 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 in each group b2 respectively; 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 in each group b2 respectively, and so on.

[0307] It should be understood that the terminal device can determine the frequency domain resource position n b1 (i,j) occupied by the jth SRS transmission in the ith group (i = n b2 ) based on the first-level frequency domain position index n SRS and the second-level frequency domain position index n b (i,j) can be determined according to at least one of n b , N and n b1 , for example, n b2 (i,j) satisfies: n b (i,j) = n b *N + n b1 b2

[0308] wherein the specific size of n b2 may be determined by referring to Table 4.

[0309] Referring to FIG. 8, suppose that each symbol SRS transmission occupies 16 RBs, 20 = (17 mod 4) * 4 frequency hopping is used to complete SRS transmission of 272 RB bandwidth, each 16 RB is divided into a sub-band, 272 RB is divided into 17 sub-bands, the first-level frequency domain position index n b1 ​{0, 0, 0, 0, 3, 3, 3, 3, 1, 1, 1, 1, 4, 4, 4, 4, 2, 2, 2, 2}, the second level frequency domain position index n b2 {0, 1, 2, 3}, 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}.

[0310] It should be understood that, for the first level frequency domain position index n b1 , m SRS,b * (16*4=64) RBs are divided into a frequency domain block, each frequency domain block is sequentially numbered from low to high based on the frequency point, corresponding to a first level frequency domain position index, the first level frequency domain position index n b1 =0, the corresponding frequency domain block is {frequency domain subband 0~frequency domain subband 3}, the first level frequency domain position index n b1 =1, the corresponding frequency domain block is {frequency domain subband 4~frequency domain subband 7}, and so on; for the second level frequency domain position index, m SRS,b (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 from low to high based on the frequency point, corresponding to a second level frequency domain position index, the second level frequency domain position index n b2 =0 corresponds to the first sub frequency domain block in the frequency domain block, the second level frequency domain position index n b2 =1 corresponds to the second sub frequency domain block in the frequency domain block, and so on.

[0311] Method nine: two level frequency hopping.

[0312] Among them, for each SRS transmission, two level frequency domain position index is introduced.

[0313] Assume 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 Query table 3:

[0314] N times of adjacent SRS transmission 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 according to the value of N, n f , T offset , T SRSOne or more of l' and R are determined, for example, n SRS It can satisfy:

[0315] or

[0316] 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:

[0317] 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.

[0318] 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.

[0319] 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 (nSRS ), N, n b2 , and N b is determined, for example, n b (i,j) can satisfy:

[0320] wherein n b2 The specific size of n

[0321] It should also be understood that the first-level frequency domain position index n b1 is the same, and the second-level frequency domain position index n b2 is different.

[0322] wherein the frequency domain pilot sequence length of a single SRS transmission within the same group can satisfy:

[0323] 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 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. Among them, each 4 RBs is divided into a sub-band, 272 RBs are divided into 68 sub-bands, and the corresponding two-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.

[0324] It should be understood that, 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 frequency points 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 , (16 / 4 = 4) 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 frequency points from low to high, corresponding to a second-level frequency domain position index n b2 , the second-level frequency domain position index n b2 = 0 corresponds to the first sub-frequency domain block in the frequency domain block, the second-level frequency domain position index n b2 = 1 corresponds to the second sub-frequency domain block in the frequency domain block, and so on.b2 = 1 corresponds to the second sub-frequency domain block within the frequency domain block, and so on.

[0325] 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.

[0326] 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 position of the frequency domain resource in the first frequency hopping pattern and the second frequency hopping pattern. Among them, the position of the frequency domain resource of the first level frequency hopping pattern on the two time slots is a non-continuous bandwidth, and the position combination 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.

[0327] 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 above-mentioned 4 times of transmitting SRS.

[0328] 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 above-mentioned 4 times of transmitting SRS.

[0329] 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.

[0330] 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 position 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.

[0331] 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.

[0332] 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.

[0333] 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.

[0334] 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.

[0335] In one possible implementation, one SRS resource set contains a usage indication information ('usage'), which is used to indicate the usage of the SRS resource set. Specifically, the usage can be antenna switching, codebook, non-codebook, or beam management.

[0336] 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.

[0337] 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.

[0338] 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).

[0339] 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.

[0340] 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.

[0341] 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.

[0342] 602, the network device sends indication information to the terminal device, and correspondingly, the terminal device receives the indication information of the network device.

[0343] It should be understood that the indication information is used to indicate that the frequency hopping pattern of the transmission reference signal is updated (or switched), or it can be understood that the indication information is used for the terminal device to dynamically switch or dynamically update the frequency domain resource of the transmission reference signal, which includes one or more of the following: frequency domain resource location of the transmission reference signal, frequency domain resource quantity of the transmission reference signal, or frequency domain resource order of the transmission reference signal.

[0344] It should also be understood that the indication information can indicate that the updated frequency hopping pattern of the transmission reference signal includes a first-level frequency hopping pattern and / or a second-level frequency hopping pattern. The specific introduction of the first-level frequency hopping pattern and the second-level frequency hopping pattern can be referred to the detailed introduction in the above step 601.

[0345] In one possible implementation manner, the indication information includes one or more of the following: transmission comb, comb offset value, frequency hopping parameter, frequency hopping pattern index, frequency domain starting position, or frequency domain offset value.

[0346] It should be understood that one or more of the transmission comb, the comb offset value, the frequency hopping parameter, the frequency hopping pattern index, the frequency domain starting position, or the frequency domain offset value is used for the terminal device to update the frequency hopping pattern (for example, the first frequency hopping pattern and / or the second frequency hopping pattern) and determine the updated frequency hopping pattern; or one or more of the transmission comb, the comb offset value, the frequency hopping parameter, the frequency hopping pattern index, the frequency domain starting position, or the frequency domain offset value is used for the terminal device to update the frequency domain resource of the transmission reference signal, and determine the updated frequency domain resource.

[0347] It should be understood that the present application exemplarily illustrates the case that the indication information indicates the terminal device to update the second-level frequency hopping pattern. Wherein, the indication information indicates the terminal device to update the first-level frequency hopping pattern, or to update the first-level frequency hopping pattern and the second-level frequency hopping pattern, which are similar to updating the second-level frequency hopping pattern, and the present application will not be described in detail.

[0348] It should also be understood that the first-level frequency hopping pattern in the following examples is exemplarily illustrated by taking pattern #1 as an example, the pattern #1 corresponds to a frequency domain bandwidth X1, and the specific frequency domain position of the pattern #1 is not limited by the present application, for example, the pattern #1 can be a specific example of the first-level frequency hopping pattern in the above step 601 (for example, the first-level frequency hopping pattern shown in FIG. 10). The second-level frequency hopping pattern in the following examples is exemplarily illustrated by taking pattern #1-0, pattern #1-1, pattern #1-4 and pattern #1-5 as examples, the pattern #1-0, pattern #1-1, pattern #1-4 and pattern #1-5 correspond to a frequency domain bandwidth X2, and the specific frequency domain position of the pattern #1-0, pattern #1-1, pattern #1-4 and pattern #1-5 is not limited by the present application, for example, the pattern #1-0 can be the second-level frequency hopping pattern corresponding to the frequency hopping pattern index 0 in the above table 4; the pattern #1-1 can be the second-level frequency hopping pattern corresponding to the frequency hopping pattern index 1 in the above table 4; the pattern #1-4 can be the second-level frequency hopping pattern corresponding to the frequency hopping pattern index 4 in the above table 4; and the pattern #1-5 can be the second-level frequency hopping pattern corresponding to the frequency hopping pattern index 5 in the above table 4.

[0349] As an example, the indication information includes a transmission comb (for example, transmissionComb), which is used to update the number of frequency domain subcarriers occupied by the reference signal in the frequency hopping pattern, the frequency domain subcarrier position, and the length of the reference signal transmission sequence.

[0350] For example, after the terminal device receives the indication information, the terminal device updates the number of frequency domain subcarriers occupied by the reference signal, the frequency domain subcarrier position, and the length of the reference signal transmission sequence based on the transmission comb in the indication information.

[0351] Suppose the terminal device determines according to the configuration information that the first-level frequency hopping pattern is pattern #1 and the second-level frequency hopping pattern is pattern #1-1, wherein the pattern #1-1 corresponds to a frequency domain bandwidth X2 and a transmission comb of 2 (i.e., K TC = 2), the number of frequency domain subcarriers occupied by the terminal device for transmitting the reference signal in each RB within the frequency domain bandwidth X2 is 6, and the frequency domain subcarrier position of each RB within the frequency domain bandwidth X2 is the 1st, 3rd, 5th, 7th, 9th and 11th subcarriers. The indication information includes a transmission comb, which is 3 (i.e., K TC= 3, the terminal device updates the number of frequency domain subcarriers occupied by the terminal device for transmitting the reference signal in each RB within the frequency domain bandwidth X2 to 4, and updates the frequency domain subcarrier positions of each RB within the frequency domain bandwidth X2 to the 1st, 4th, 7th, and 10th subcarriers.

[0352] It should be understood that the terminal device can determine the length of the transmission sequence of the reference signal in any one of the above-described manners four to six shown in step 601. For example, the terminal device determines that the second-level frequency hopping pattern is pattern #1-1 according to the configuration information, the transmission comb is 2, i.e., K TC = 2, and determines the length of the transmission sequence of the reference signal in the above-described manner four based on K TC = 2. The indication information includes that the transmission number is 3, i.e., K TC = 2, and the terminal device can determine the length of the updated transmission sequence of the reference signal in the above-described manner four based on K TC = 3.

[0353] In an exemplary scenario, when the indication information includes a field indicating the transmission comb adopted by the frequency hopping pattern for transmitting the reference signal, the number of bits occupied by the field is related to the maximum value of the transmission comb that can be configured. For example, when the maximum value of the transmission comb that can be configured is 8, the field can occupy 3 bits, where the field is 0 indicates that the transmission comb is 0; the field is 1 indicates that the transmission comb is 1; the field is 2 indicates that the transmission comb is 2; and the field is 8 indicates that the transmission comb is 8. When the maximum value of the transmission comb that can be configured changes, the number of bits occupied by the field can also be adjusted accordingly.

[0354] In another exemplary scenario, when the indication information includes a field indicating the transmission comb, the number of bits occupied by the field is related to the size of the set of values that the transmission comb can take. For example, the set of values that the transmission comb can take is {2, 4, 8}, and the field occupies 2 bits. Where the field is 0 indicates that the frequency hopping pattern for transmitting the reference signal adopts a manner of transmitting the reference signal with a transmission comb of 2; the field is 1 indicates that the frequency hopping pattern for transmitting the reference signal adopts a manner of transmitting the reference signal with a transmission comb of 4; the field is 2 indicates that the frequency hopping pattern for transmitting the reference signal adopts a manner of transmitting the reference signal with a transmission comb of 8; and when the field is a value other than the set {2, 4, 8}, it is an invalid value. When the set of values that can be taken changes, the number of bits occupied by the field can also be adjusted accordingly.

[0355] As an example, the indication information includes a comb offset value (e.g., combOffset), which is used to update the frequency domain subcarrier positions occupied by the terminal device for transmitting the reference signal.

[0356] For example, after receiving the indication information, the terminal device updates the frequency domain subcarrier positions occupied by the reference signal based on the comb offset value in the indication information.

[0357] For example, the terminal device determines the first level frequency hopping pattern as pattern #1 and the second level frequency hopping pattern as pattern #1-1 according to the configuration information, where the frequency domain bandwidth corresponding to the pattern #1-1 is X2, the transmission comb is 2, the comb offset value is 0, the number of frequency domain subcarriers occupied by the terminal device for transmitting the reference signal in each RB within the frequency domain bandwidth X2 is 6, and the frequency domain subcarrier positions of each RB within the frequency domain bandwidth X2 are the 1st, 3rd, 5th, 7th, 9th and 11th subcarriers. The indication information includes the comb offset value, and the comb offset value is 1. The number of frequency domain subcarriers occupied by the terminal device for transmitting the reference signal in each RB within the frequency domain bandwidth X2 is 6, and the frequency domain subcarrier positions of each RB within the frequency domain bandwidth X2 are updated to the 2nd, 4th, 6th, 8th, 10th and 12th subcarriers.

[0358] In an exemplary scenario, when the indication information includes a field indicating the comb offset value adopted by the frequency hopping pattern for transmitting the reference signal, the number of bits occupied by the field is related to the value of the transmission comb. For example, when the transmission comb is 2, it indicates that the SRS port of the frequency domain resource occupies 6 subcarriers on each RB, and the comb offset value can take {0, 1}, and the field can occupy 1 bit. When the transmission comb is 4, it indicates that the SRS port of the frequency domain resource occupies 3 subcarriers on each RB, and the comb offset value can take {0, 1, 2, 3}, and the field can occupy 2 bits, and so on.

[0359] As an example, the indication information includes a frequency hopping parameter, and the terminal device determines a new frequency hopping pattern according to the frequency hopping parameter included in the indication information, and determines the frequency domain position of the reference signal based on the new frequency hopping pattern.

[0360] It should be understood that the related description of how the terminal device determines the frequency hopping pattern based on the frequency hopping parameter can be referred to the detailed description of step 601 above, which will not be repeated here.

[0361] As an example, the indication information includes a frequency hopping pattern index, which corresponds to the updated frequency hopping pattern in a one-to-one manner. The frequency hopping pattern index is used to update the order of the multiple frequency domain subbands occupied by the continuously transmitted multiple reference signals.

[0362] For example, after receiving the indication information, the terminal device updates the order of the multiple frequency domain subbands occupied by the continuously transmitted multiple reference signals based on the frequency hopping pattern index in the indication information.

[0363] For example, the terminal device determines the first level frequency hopping pattern as pattern #1 and the second level frequency hopping pattern as pattern #1-1 according to the configuration information, where the pattern #1-1 corresponds to the frequency hopping pattern index 1 in the above table 4 and the second frequency domain position index is {1, 2, 3, 0}. The indication information includes the frequency hopping pattern index, and the frequency hopping pattern index is 3. The terminal device can determine the updated second frequency domain position index as {3, 0, 1, 2} according to the table 4, and transmit the reference signal based on the updated second frequency domain position index {3, 0, 1, 2}.

[0364] In an exemplary scenario, when the indication information includes a field indicating the frequency hopping pattern index of the transmitted reference signal, the number of bits occupied by the field is related to the number of frequency hopping patterns indicated by the terminal device. For example, the protocol / system predefines a plurality of frequency hopping patterns, and the frequency hopping pattern index is used to indicate a frequency hopping pattern to the terminal device. Accordingly, the terminal device determines the order of the plurality of frequency domain subbands in which the reference signal is transmitted multiple times according to the frequency hopping pattern corresponding to the frequency hopping pattern index indicated by the indication information.

[0365] As an example, the indication information includes a frequency domain starting position and / or a frequency domain offset value, the frequency domain starting position corresponding to the updated frequency hopping pattern one by one, and the frequency domain offset value corresponding to the updated frequency hopping pattern one by one. The frequency domain starting position and / or the frequency domain offset value are used to update the order of the plurality of frequency domain subbands occupied by the plurality of times of continuously transmitted reference signals.

[0366] For example, after the terminal device receives the indication information, the terminal device updates the order of the plurality of frequency domain subbands occupied by the plurality of times of continuously transmitted reference signals, or the order of the plurality of RBs in the same frequency domain subband in which the plurality of times of reference signals are transmitted, based on the frequency domain starting position and / or the frequency domain offset value in the indication information.

[0367] For example, the terminal device determines the first level frequency hopping pattern as pattern #1 and the second level frequency hopping pattern as pattern #1-1 according to the configuration information, where the pattern #1-1 corresponds to the frequency domain bandwidth X2, X2 contains 4 RBs, and the order of the frequency domain positions occupied by the plurality of times of reference signal transmission is RB#1, RB#2, RB#3 and RB#0. The indication information includes a frequency domain starting position, and the frequency domain starting position indicates the frequency domain starting position of the second level frequency hopping pattern. If the frequency domain starting position indicated by the indication information is RB#0, it indicates that the frequency domain starting position of the second level frequency hopping pattern is RB#0, and the corresponding frequency hopping pattern is #1-0, i.e., the order of the frequency domain positions occupied by the plurality of times of reference signal transmission is updated to RB#0, RB#1, RB#2 and RB#3.

[0368] Optionally, the frequency domain starting position indicated by the indication information corresponds to a frequency hopping pattern related to the frequency hopping pattern currently used by the terminal device; or it can be understood that the indication information indicates that the frequency domain starting position of the same group is changed, but the frequency domain interval relationship of the multiple reference signal transmissions is not changed. Assuming that the second level frequency hopping pattern currently used by the terminal device is pattern #1-0, i.e., the frequency domain starting position occupied by the multiple reference signal transmissions is RB#0, and the frequency domain position order of the multiple reference signal transmissions is RB#0, RB#1, RB#2 and RB#3 respectively, and the frequency domain starting position indicated by the indication information is RB#1, the frequency domain starting position RB#1 corresponds to the frequency hopping pattern #1-1, i.e., the frequency domain starting position occupied by the multiple reference signal transmissions is updated to RB#1, and the frequency domain position order of the multiple reference signal transmissions is updated to RB#1, RB#2, RB#3 and RB#0. It can be seen that the frequency domain intervals of the frequency hopping patterns (pattern #1-0 and pattern #1-1) of the multiple reference signal transmissions before and after the update are the same, and the indication information does not change the frequency domain interval of the multiple reference signal transmissions; and assuming that the second level frequency hopping pattern currently used by the terminal device is pattern #1-5, i.e., the frequency domain starting position occupied by the multiple reference signal transmissions is RB#0, and the frequency domain position order of the multiple reference signal transmissions is RB#0, RB#2, RB#1 and RB#3 respectively, and the frequency domain starting position indicated by the indication information is RB#1, the frequency domain starting position RB#1 corresponds to the frequency hopping pattern #1-4, i.e., the frequency domain starting position occupied by the multiple reference signal transmissions is updated to RB#1, and the frequency domain position order of the multiple reference signal transmissions is updated to RB#1, RB#3, RB#0 and RB#2. It can be seen that the frequency domain intervals of the frequency hopping patterns (pattern #1-5 and pattern #1-4) of the multiple reference signal transmissions before and after the update are the same, and the indication information does not change the frequency domain interval of the multiple reference signal transmissions.

[0369] Further assuming that the terminal device determines the first level frequency hopping pattern to be pattern #1 and the second level frequency hopping pattern to be pattern #1-1 according to the configuration information, wherein the frequency domain position order corresponding to pattern #1-1 is RB#1, RB#2, RB#3 and RB#0, the frequency domain offset value corresponding to pattern #1-1 is 1, the indication information includes the frequency domain offset value, and the frequency domain offset value is 0, then the terminal device updates the second level frequency hopping pattern to pattern #1-0 according to the frequency domain offset value 0, i.e., the frequency domain position order occupied by the multiple reference signal transmissions is updated to RB#0, RB#1, RB#2 and RB#3 respectively.

[0370] Optionally, the frequency domain offset value indicated by the indication information corresponds to a frequency hopping pattern related to the frequency hopping pattern currently used by the terminal device; or it can be understood that the frequency domain offset value indicated by the indication information changes the frequency domain starting positions of the multiple reference signal transmissions in the same group, but does not change the frequency domain interval relationship of the multiple reference signal transmissions. Assuming that the second-level frequency hopping pattern currently used by the terminal device is pattern #1-0, i.e., the frequency domain positions occupied by the multiple reference signal transmissions are RB#0, RB#1, RB#2 and RB#3 in sequence, and the frequency domain offset value indicated by the indication information is 1, the corresponding frequency hopping pattern is pattern #1-1, i.e., the frequency domain positions occupied by the multiple reference signal transmissions are updated to RB#1, RB#2, RB#3 and RB#0 in sequence. As can be seen, the frequency domain intervals of the frequency hopping patterns of the multiple reference signal transmissions before and after the update (pattern #1-0 and pattern #1-1) are the same, and the indication information does not change the frequency domain interval of the multiple reference signal transmissions; assuming that the second-level frequency hopping pattern currently used by the terminal device is pattern #1-5, i.e., the frequency domain positions occupied by the multiple reference signal transmissions are RB#0, RB#2, RB#1 and RB#3 in sequence, and the frequency domain offset value indicated by the indication information is 1, the corresponding frequency hopping pattern is pattern #1-4, i.e., the frequency domain positions occupied by the multiple reference signal transmissions are updated to RB#1, RB#3, RB#0 and RB#2 in sequence. As can be seen, the frequency domain intervals of the frequency hopping patterns of the multiple reference signal transmissions before and after the update (pattern #1-5 and pattern #1-4) are the same, and the indication information does not change the frequency domain interval of the multiple reference signal transmissions.

[0371] In an exemplary scenario, the indication information indicates a frequency domain position and / or a frequency domain offset value, wherein different frequency domain positions and / or different frequency domain offset values are associated with a frequency hopping pattern. The terminal device determines the order of the multiple frequency domain subbands for transmitting the multiple reference signals according to the frequency hopping pattern corresponding to the frequency domain position and / or the frequency domain offset value indicated by the indication information.

[0372] Referring to (1) to (4) in FIG. 11, exemplary introduction is made by taking the four different frequency hopping patterns in (4) as examples. The frequency domain positions or frequency domain offset values corresponding to the four frequency hopping patterns shown in (1) to (4) in FIG. 11 can be 0, 1, 2 and 3 respectively. Assuming that the indication information indicates the frequency domain position 0, the terminal device determines to transmit the reference signals in the order of the multiple frequency domain subbands included in the frequency hopping pattern shown in (1) in FIG. 11 according to the frequency domain position 0 indicated by the indication information. Assuming that the indication information indicates the frequency domain position 1, the terminal device determines to transmit the reference signals in the order of the multiple frequency domain subbands included in the frequency hopping pattern shown in (2) in FIG. 11 according to the frequency domain position 1 indicated by the indication information.

[0373] It should be understood that the indication information can further include one or more of the following: identification information of the serving cell, bandwidth part indicator information of the bandwidth part, a reference signal resource set, or a reference signal resource.

[0374] As an example, the indication information further includes identification information of the serving cell, which is used by the terminal device to determine the serving cell to which the frequency hopping pattern is applicable.

[0375] In an exemplary scenario, when the indication information includes a field indicating the identification of the serving cell, the number of bits occupied by the field is related to the maximum number of serving cells that each terminal device can configure. For example, if the protocol restricts the maximum number of serving cells that a terminal device can configure to 32, then the field can occupy 5 bits. Accordingly, the terminal device transmits the reference signal using the corresponding frequency hopping pattern when the terminal device is within the scope of the serving cell indicated by the identification of the serving cell indicated by the indication information.

[0376] As an example, the indication information further includes bandwidth part indicator information of the bandwidth part, and when the indication information includes a field indicating the identification of the bandwidth part, the field indicates the identification of the bandwidth part used by the frequency hopping pattern. The number of bits occupied by the field is related to the value of the bandwidth part indicator field of the DCI of each terminal device. For example, the current protocol restricts the field to occupy 2 bits.

[0377] As an example, the indication information further includes a reference signal resource set, and when the indication information includes a field indicating the reference signal resource set, the field indicates the reference signal resource set (e.g., SRS-ResourceSetId or SRS-ResourceSet indicator) used by the frequency hopping pattern.

[0378] SRS-ResourceSetId, is an identity of the SRS resource set. The number of bits occupied by this field is related to the maximum number of SRS resource sets that can be configured by the terminal device in each cell per bandwidth part. For example, assuming that the maximum number of SRS resource sets that can be configured by the terminal device in each cell per bandwidth part is 192, this field can occupy 8 bits, where a value of 0 of this field indicates a pilot resource set of SRS-ResourceSetId = 0; a value of 1 of this field indicates a pilot resource set of SRS-ResourceSetId = 1. A value of n of this field indicates a pilot resource set of SRS-ResourceSetId = n, and so on. Assuming that the maximum number of SRS resource sets that can be configured by the terminal device in each cell per bandwidth part is another value, the number of bits occupied by this field also needs to be adjusted accordingly.

[0379] SRS-ResourceSet indicator, is a logical index of the SRS resource set. The number of bits occupied by this field is related to the maximum number of pilot resources that can be configured by each terminal device per BWP. For example, assuming that the maximum number of pilot resources that can be configured by each terminal device per BWP is 8, this field can occupy 3 bits, where a value of n of this field indicates that the SRS frequency hopping pattern is applicable to the SRS resource set corresponding to the nth+1 ordered SRS resource set in the BWP. If the value of the maximum number of pilot resources that can be configured by each terminal device per BWP changes, the number of bits occupied by this field also needs to be adjusted accordingly.

[0380] As an example, when the indication information includes a field indicating a reference signal resource, the field indicates the reference signal resource (e.g., SRS-ResourceId, or SRS-Resource indicator) used by the frequency hopping pattern.

[0381] SRS-Resource indicator, is a logical index of SRS resource. The number of bits occupied by this field is related to the maximum number of SRS resources that can be contained in each SRS resource set. For example, if the maximum number of SRS resources that can be contained in each SRS resource set is 8, this field can occupy 3 bits. Wherein, the value n of this field indicates that the SRS frequency hopping pattern applied to the SRS resource corresponds to the SRS resource ranked n+1 in the SRS resource set. If the value of the maximum number of SRS resources that can be contained in each SRS resource set changes, the number of bits occupied by this field also needs to be adjusted accordingly.

[0382] SRS-Resource indicator, is a logical index of SRS resource. The number of bits occupied by this field is related to the maximum number of SRS resources that can be contained in each SRS resource set. For example, if the maximum number of SRS resources that can be contained in each SRS resource set is 8, this field can occupy 3 bits. Wherein, the value n of this field indicates that the SRS frequency hopping pattern applied to the SRS resource corresponds to the SRS resource ranked n+1 in the SRS resource set. If the value of the maximum number of SRS resources that can be contained in each SRS resource set changes, the number of bits occupied by this field also needs to be adjusted accordingly.

[0383] It should be understood that the configuration information in step 601 and the indication information in step 602 can be carried in the same signaling for transmission, for example, the configuration information and the indication information can be carried in one or more of RRC signaling, MAC-CE signaling, or DCI signaling for transmission. The configuration information and the indication information can be carried in different signaling for simultaneous transmission or sequential transmission, which is not limited by the present application.

[0384] 603, the terminal device sends a reference signal to the network device, and correspondingly, the network device receives the reference signal of the terminal device.

[0385] For example, after the terminal device receives the configuration information from the network device, it determines the frequency hopping pattern (for example, the first-level frequency hopping pattern, the second-level frequency hopping pattern) of the reference signal according to the configuration information. Wherein, before the terminal device sends the reference signal to the network device according to the configuration information, the terminal device receives the indication information from the network device, which is used to instruct the terminal device to update the frequency hopping pattern of the reference signal and send the reference signal according to the updated frequency hopping pattern.

[0386] In a possible implementation, the terminal device determines, according to the configuration information, a first-level frequency hopping pattern and a second-level frequency hopping pattern for sending a reference signal. The terminal device updates the frequency hopping pattern of the first-level frequency hopping pattern and / or the second-level frequency hopping pattern according to the indication information, and sends the reference signal to the network device based on the updated first-level frequency hopping pattern and / or the second-level frequency hopping pattern.

[0387] Optionally, the terminal device receives the indication information from the network device at a first time, and the terminal device can send the reference signal to the network device according to the updated frequency hopping pattern at a second time. A time interval between the first time and the second time is not 0.

[0388] It should be understood that the time interval can be a processing time of the terminal device for determining the updated frequency hopping pattern according to the received indication information. Accordingly, in a possible implementation, after the terminal device receives the indication information, and determines the updated frequency hopping pattern according to the indication information, the terminal device can further send response / feedback information, such as ACK feedback or NACK feedback, to the network device.

[0389] Optionally, the terminal device can jointly design pilot sequences of N times of SRSs sent at specific positions of the updated first-level frequency hopping pattern and / or the second-level frequency hopping pattern according to the updated first-level frequency hopping pattern and / or the second-level frequency hopping pattern, where N is an integer greater than 1.

[0390] For details of how the terminal device determines the first-level frequency hopping pattern and / or the second-level frequency hopping pattern, reference can be made to the related description in step 601. For details of how the terminal device determines the updated first-level frequency hopping pattern and / or the second-level frequency hopping pattern according to the indication information, reference can be made to the related description in step 602.

[0391] For example, the length of the sequence of N times of SRSs sent by the terminal device based on the updated first-level frequency hopping pattern and / or the second-level frequency hopping pattern is The total number of frequency domain subcarriers occupied by the N times of SRSs. The total number of frequency domain subcarriers occupied by the N times of SRSs. can be expressed as:

[0392] where N is the number of times of SRSs for joint sequence design, m SRS,b The number of RBs occupied by each SRS in the frequency domain is actually specified, and the m SRS,b According to the C SRS and B SRS configuration. The number of subcarriers on each RB. K TC The number of combs, P F∈ {2,4} higher layer parameter frequency domain spreading factor.

[0393] It should also be understood that the specific value of N can be determined based on one or more of the following manners:

[0394] Manner ten: the specific value of N is obtained based on a set of N values predefined by a protocol.

[0395] It should be understood that the terminal device can be predefined by a protocol / system with 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 signaling information. The set of N values includes one or more specific values of N.

[0396] It should also be understood that manner ten can also be understood as: the specific value of N is determined based on a set of N values predefined by a protocol.

[0397] Manner 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.

[0398] For example, N = X1 / X2.

[0399] It should be understood that the updated first level frequency hopping pattern has the same frequency domain bandwidth as the first level frequency hopping pattern, both of which are X1; the updated second level frequency hopping pattern has the same frequency domain bandwidth as the second level frequency hopping pattern, both of which are X2.

[0400] It should also 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. 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.

[0401] It should also be understood that manner 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.

[0402] Manner 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.

[0403] For example, N = R*(X1 / X2).

[0404] 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. 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.

[0405] It should also be understood that Mode Twelve can also be understood as follows: the specific value of N is determined based on the frequency domain bandwidth X1, the frequency domain bandwidth X2, and the repetition factor R.

[0406] 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.

[0407] 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 single SRS transmission.

[0408] Suppose the N times of SRS sequences transmitted by the terminal device can be represented as: Then 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.

[0409] As an example, in the case where 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.

[0410] Suppose the sequence transmitted by the i-th SRS is: The sequence transmitted by the i+1-th SRS is {r0, r1,..., r n , n+1 , ..., 2n-1}, the sequence transmitted by the i+2-th SRS is {r0, r1,..., r 2n , 2n+1 , ..., 3n-1}, and the sequence transmitted by the i+3-th SRS is {r0, r1,..., r n-1}. Wherein, i is an integer, and

[0411] As another example, in the case where the values of the transmission counters of the N times of transmitted SRS sequences are adjacent, the specific positions of the transmitted SRS sequences in the joint sequence are adjacent.

[0412] Suppose the sequence transmitted by the i-th SRS is {r0, r1,..., r n-1}, the sequence transmitted by the i+1-th SRS is {r0, r1,..., r n , n+1 , ..., 2n-1}, the sequence transmitted by the i+2-th SRS is {r0, r1,..., r 2n , 2n+1 , ..., 3n-1}, and the sequence transmitted by the i+3-th SRS is Wherein, i is an integer, and

[0413] 604, the network device performs channel measurement.

[0414] For example, after the network device receives multiple SRSs sent by the terminal device, the network device performs channel measurement on the received SRSs. Accordingly, the network device can obtain channel state information (CSI) of the downlink, or CSI information of the uplink, or relevant information of the transceiving beam based on the received SRSs.

[0415] Specifically, the network device determines to receive multiple SRSs sent by the terminal device at the time-frequency domain resource position used for transmitting the reference signal based on the configuration information and the indication information in steps 601 and 602. Assuming that the sending sequence of the N SRSs sent by the terminal device is jointly designed in step 603, the network device performs joint channel estimation on the received N SRSs, thereby improving the channel estimation accuracy of the network device.

[0416] The above FIG. 6 is a communication method provided by the present application. The terminal device updates the frequency hopping pattern based on the indication information of the network device. The terminal device transmits the reference signal based on the updated frequency hopping pattern, thereby realizing dynamic switching of the terminal device level frequency hopping pattern, weakening the interference of the reference signals between cells, and improving the estimation accuracy of the network device based on the channel measurement of the reference signal.

[0417] In addition, the subbands of the multiple reference signals sent by the terminal device are jointly designed in sequence, thereby further reducing the frequency interference between the reference signals and improving the channel estimation accuracy of the network device based on the reference signal.

[0418] 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.

[0419] 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.

[0420] It can also be understood that the schemes in the embodiments of the present application can be reasonably combined, and the explanation or description of each term appearing in the embodiments can be mutually referenced or explained in the embodiments, without limitation.

[0421] It can also be understood that the methods and operations implemented by the devices (such as terminal devices and network devices) in the above various method embodiments can also be implemented by components (such as chips or circuits) of the devices, without limitation.

[0422] 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, which will not be described here for brevity.

[0423] Referring to FIG. 12, FIG. 12 is a schematic diagram of a communication apparatus 1200 provided by the embodiments 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 to perform processing, such as beam measurement. The processing unit 1220 can be used to perform processing, such as 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.

[0424] 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.

[0425] Optionally, the transceiver unit 1210 can include a receiving unit and a sending unit. The receiving unit can be used to perform operations related to receiving (such as operations of receiving data or messages), and the sending unit can be used to perform operations related to sending (such as operations of sending data or messages).

[0426] The first possible design is that the apparatus 1200 can be a terminal device in the foregoing embodiments, and the apparatus 1200 can implement steps or procedures corresponding to the steps or procedures performed by the terminal device in the foregoing method embodiments. Specifically, the transceiver unit 1210 can be used to perform operations related to the transceiving (such as operations of sending and / or receiving data or messages) of the terminal device in the foregoing method embodiments, such as the transceiver unit 1210 can be used to perform steps 601, 602 and 603 in the embodiment shown in FIG. 6. The processing unit 1220 can be used to perform operations related to processing of the terminal device in the foregoing method embodiments, or operations other than the transceiving (such as operations other than sending and / or receiving data or messages), such as the processing unit 1220 can be used to perform step 604 in the embodiment shown in FIG. 6.

[0427] In a possible implementation, the transceiver 1210 is configured to receive indication information, the indication information indicating that frequency domain resources for transmitting a reference signal are updated, the frequency domain resources including at least one of a frequency domain resource position of the reference signal, a frequency domain resource quantity of the reference signal, or a frequency domain resource sequence of the reference signal; and the processing unit 1220 is configured to transmit, according to the indication information, the reference signal through the transceiver 1210 according to the updated frequency domain resources.

[0428] 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 processes corresponding to steps or processes performed by the network device in the foregoing method embodiments. The transceiver 1210 can be configured to perform operations related to transceiving (such as operations of transmitting and / or receiving data or messages) of the network device in the foregoing method embodiments, for example, the transceiver 1210 can be configured to perform steps 601, 602, and 603 in the embodiment shown in FIG. 6. The processing unit 1220 can be configured to perform operations related to processing of the network device in the foregoing method embodiments, or operations other than transceiving (such as operations other than transmitting and / or receiving data or messages), for example, the processing unit 1220 can be configured to perform step 604 in the embodiment shown in FIG. 6.

[0429] In a possible implementation, the processing unit 1220 is configured to determine indication information, the indication information indicating that frequency domain resources for transmitting a reference signal are updated, the frequency domain resources including at least one of a frequency domain resource position of the reference signal, a frequency domain resource quantity of the reference signal, or a frequency domain resource sequence of the reference signal; and the transceiver 1210 is configured to transmit the indication information.

[0430] 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 foregoing method embodiments, and thus is not described herein again for the sake of brevity.

[0431] It should also be understood that the apparatus 1200 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 logic circuitry and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the apparatus 1200 can be embodied as a communication device in the foregoing embodiments, and can be configured to perform each process and / or step corresponding to the communication device in the foregoing method embodiments. For the sake of brevity, the foregoing is not described again.

[0432] The apparatus 1200 of each of the foregoing solutions has a function of implementing the corresponding steps performed by the communication apparatus in the foregoing methods. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the foregoing 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 respectively performs the transceiving operations and related processing operations in each method embodiment.

[0433] In addition, the transceiver unit 1210 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.

[0434] It should be noted that the apparatus in FIG. 12 can be a communication device in the foregoing embodiments, or 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; and the processing unit can be a processor or a microprocessor integrated on the chip or an integrated circuit. In this regard, no limitation is made.

[0435] 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, and 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.

[0436] Optionally, the processor 1313 is one or more.

[0437] Optionally, the memory 1320 is one or more.

[0438] Optionally, the memory 1320 is integrated with the processor 1313, or is separately arranged.

[0439] Optionally, as shown in FIG. 13, the apparatus 1300 further includes a transceiver 1330 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 perform the receiving-related operations in the method shown in FIG. 6, and the transmitter is configured to perform the transmitting-related operations in the method shown in FIG. 6.

[0440] As an 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 transceiving unit 1210 shown in FIG. 12.

[0441] As an example, the apparatus 1300 is configured to implement operations performed by a communication apparatus in the various method embodiments.

[0442] For example, the processor 1313 is configured to execute computer programs or instructions stored in the memory 1320 to implement the related operations of a terminal device or a network device in the various method embodiments.

[0443] It should be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0444] It should also be understood that the memory mentioned in the embodiments of the present application can be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (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 an external cache. As an example but not limitation, the RAM includes the following various forms: 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).

[0445] 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 device, a discrete hardware component, the memory (storage module) can be integrated in the processor.

[0446] It should also be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0447] Referring to FIG. 14, FIG. 14 is a schematic diagram of a chip system 1400 provided by an embodiment of the present application. The chip system 1400 (or also can be referred to as a processing system) includes a logic circuit 1410 and an input / output interface 1420.

[0448] 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, invoke instructions in the storage unit, so that the chip system 1400 can implement the methods and functions of the embodiments of the present application. The input / output interface 1420 can be an input / output circuit in the chip system 1400, output the processed information of the chip system 1400, or input the data or signaling information to be processed into the chip system 1400 for processing.

[0449] Optionally, the logic circuit 1410 can be implemented by one or more processors, including the one or more processors or processing parts in the one or more processors.

[0450] Optionally, the input / output interface 1420 can include a transceiver, a transceiver, an input / output circuit or a communication interface.

[0451] As an option, the chip system 1400 is configured to implement the operations performed by the communication apparatus (e.g., terminal device, and network device) in the above various method embodiments.

[0452] For example, the logic circuit 1410 is configured to implement the processing-related operations performed by the communication apparatus (e.g., terminal device, and network device) in the above method embodiments; the input / output interface 1420 is configured to implement the sending and / or receiving-related operations performed by the communication apparatus (e.g., terminal device, and network device) in the above method embodiments.

[0453] The embodiments of the present application also provide a computer readable storage medium, which stores computer instructions for implementing the method performed by the communication apparatus (e.g., terminal device, and network device) in the above various method embodiments.

[0454] For example, the computer program is executed by a computer, so that the computer can implement the method performed by the communication apparatus (e.g., terminal device, and network device) in the above method embodiments.

[0455] The embodiments of the present application also provide a computer program product, which includes instructions executed by a computer to implement the method performed by the communication apparatus (e.g., terminal device, and network device) in the above various method embodiments.

[0456] The embodiments of the present application also provide a communication system, which includes the terminal device and / or network device in the above embodiments. For example, the system includes the terminal device and network device in FIG. 6.

[0457] 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, which will not be repeated here.

[0458] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other manners. For example, the apparatus embodiments described above are only illustrative, 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, apparatuses or units, and can be electrical, mechanical or other forms.

[0459] 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 devices. For example, the computer can be a personal computer, a server or a network device. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted 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.) mode. 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. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as DVD), or semiconductor media (such as solid state disk (SSD) and the like. For example, the foregoing available media includes but is not limited to: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and various media that can store program codes.

[0460] 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 first configuration information, the first configuration information being used to determine frequency domain positions of N symbols, frequency domain positions of at least two symbols in the N symbols being different, wherein the N is a positive integer greater than or equal to 2; transmitting a reference signal based on the frequency domain positions of the N symbols.

2. A communication method characterized by comprising: The method comprises: determining first configuration information, the first configuration information being used to determine frequency domain positions of N symbols, frequency domain positions of at least two symbols in the N symbols being different, wherein the N is a positive integer greater than or equal to 2; transmitting the first configuration information.

3. The method according to claim 1 or 2, characterized in that, The frequency domain positions comprise first-level frequency domain position indexes and second-level frequency domain position indexes.

4. The method according to any one of claims 1 to 3, characterized in that, The frequency domain resource positions of the at least two symbols in the N symbols are different, comprising: the first-level frequency domain position indexes of the at least two symbols in the N symbols are the same, and the second-level frequency domain position indexes are different; or the first-level frequency domain position indexes of the at least two symbols in the N symbols are different, and the second-level frequency domain position indexes are the same; or the first-level frequency domain position indexes of the at least two symbols in the N symbols are different, and the second-level frequency domain position indexes are different.

5. The method according to any one of claims 1 to 4, characterized in that, The SRS count values of the N symbols are the same.

6. The method according to any one of claims 1 to 5, characterized in that, The reference signal sequence lengths corresponding to each of the N symbols are the same.

7. The method according to any one of claims 1 to 6, characterized in that, The first configuration information is used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, the X1 being greater than or equal to the X2.

8. The method of claim 7, wherein, X2*N=X1.

9. The method according to any one of claims 1 to 8, characterized in that, The N symbols can belong to the same time slot or different time slots.

10. The method according to any one of claims 1 to 8, characterized in that, The N=4, and the second-level frequency domain position indexes corresponding to the N symbols are 0, 2, 1 and 3 respectively.

11. A communication method, comprising: The method comprises: receiving indication information, the indication information indicating that frequency domain resources for transmitting a reference signal are updated, the frequency domain resources comprising at least one of the following: frequency domain resource positions for transmitting the reference signal, a frequency domain resource quantity for transmitting the reference signal, or a frequency domain resource order for transmitting the reference signal; transmitting the reference signal according to the updated frequency domain resources according to the indication information.

12. The method of claim 11, wherein, Before the receiving indication information, the method further 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 for transmitting N times of a reference signal, and the second frequency domain bandwidth X2 being used for transmitting the reference signal once, wherein X1, X2 and N are all integers greater than 1, and X2*N=X1.

13. A method of communication, comprising: The method comprises: determining indication information, the indication information indicating that frequency domain resources for transmitting a reference signal are updated, the frequency domain resources comprising at least one of the following: frequency domain resource positions for transmitting the reference signal, a frequency domain resource quantity for transmitting the reference signal, or a frequency domain resource order for transmitting the reference signal; transmitting the indication information.

14. The method of claim 13, wherein, Before the transmitting indication information, the method further comprises: transmit 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 transmission of N times of reference signals, the second frequency domain bandwidth X2 being used for single transmission of the reference signals, wherein X1, X2, N are all integers greater than 1, and X2*N = X1.

15. The method according to any one of claims 11 to 14, characterized in that, The indication information comprises one or more of the following: a transmission comb, a comb offset value, a frequency hopping parameter, a frequency hopping pattern index, a frequency domain start position, or a frequency domain offset value.

16. The method of claim 15, wherein, The indication information comprises the transmission comb, the transmission comb being related to a frequency domain resource quantity for transmission of the reference signals, and the transmission comb being used to update one or more of the following: a frequency domain subcarrier quantity occupied by transmission of the reference signals, a frequency domain subcarrier position occupied by transmission of the reference signals, or a length of a sequence of the reference signals.

17. The method according to claim 15 or 16, characterized in that, The indication information comprises the comb offset value, the transmission comb offset value being related to a frequency domain resource position for transmission of the reference signals, and the comb offset value being used to update a frequency domain subcarrier position occupied by transmission of the reference signals.

18. The method of any one of claims 15-17, wherein, The indication information comprises the frequency hopping pattern index, the frequency hopping pattern index being related to a frequency domain resource sequence for transmission of the reference signals, and the frequency hopping pattern index being used to update a sequence of a plurality of frequency domain subbands occupied by transmission of a plurality of times of the reference signals.

19. The method of claim 18, wherein, The frequency hopping pattern index comprises an index of a first level frequency hopping pattern and / or an index of a second level frequency hopping pattern, the first frequency hopping pattern corresponding to a frequency domain bandwidth X1 for transmission of N times of the reference signals, and the second frequency hopping pattern corresponding to a frequency domain bandwidth X2 for single transmission of the reference signals, wherein X1, X2, N are all integers greater than 1, and X2*N = X1.

20. The method of any one of claims 15-19, wherein, The indication information comprises the frequency domain start position and / or the frequency domain offset value, the frequency domain start position and the frequency domain offset value being related to a frequency domain resource sequence for transmission of the reference signals, and the frequency domain start position and / or the frequency domain offset value being used to update a sequence of a plurality of frequency domain subbands occupied by transmission of a plurality of times of the reference signals.

21. The method according to any one of claims 12, 14 to 20, 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 start position, a frequency domain offset, a transmission comb, or a comb offset.

22. The method according to any one of claims 12, 14 to 21, 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 the N predefined by a protocol; Manner 2: the value of the N is determined based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2; 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.

23. The method of claim 21 or 22, 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 , or wherein denotes the number of slots within a system frame, n f 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.

24. The method of any of claims 12, 14-23, 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 the higher layer parameter frequency domain spreading factor.

25. The method of any one of claims 12, 14-24, 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.

26. The method of any one of claims 12, 14-25, wherein, The second frequency domain bandwidth X2 corresponds to a second level frequency domain position index n b2 The second level frequency domain position index n corresponds to a second frequency domain bandwidth X2 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.

27. The method of any one of claims 12, 14-26, wherein, said first level frequency domain position index n b1 and said second level frequency domain position index n b2 an index n b (i,j) for determining a frequency domain resource position of the reference signal of the i-th group of the j-th transmission b (i,j) satisfies: n b (i,j) = n b1 *N + n b2 ; or said first frequency domain position index n b1 , satisfying: 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 second-level frequency domain position index n b2 of the N transmissions of the reference signal in the same group is different.

28. The method of any of claims 12, 14-27, wherein the sequence of the reference signals is adjacent in a case that frequency domain resources between the reference signals are adjacent; or the sequence of the uplink reference signals is adjacent in a case that transmission counter values between the reference signals are adjacent.

29. A communications device, characterized by a module or unit for performing the method of any of claims 1-28.

30. A communications device, characterized by The apparatus comprises a processor configured to execute computer programs or instructions to cause the apparatus to perform the method of any one of claims 1 to 28.

31. The apparatus of claim 30, wherein, The apparatus further comprises a memory configured to store the computer programs 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.

32. A computer-readable storage medium, comprising: 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 to 28.

33. 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 to 28.

Images