Communication method and communication device

Abstract

The invention provides a communication method, and the method can comprise the steps that terminal equipment receives indication information, and transmits a reference signal according to the indication information and an updated frequency domain resource. Wherein the indication information indicates that frequency domain resources for transmitting the reference signals are updated, and the frequency domain resources comprise at least one of the following items: the position of the frequency domain resources for transmitting the reference signals, the number of the frequency domain resources for transmitting the reference signals or the sequence of the frequency domain resources for transmitting the reference signals. In the method, the terminal equipment can dynamically adjust the frequency domain resource for transmitting the reference signal through the indication information, the interference of the reference signal between cells is reduced, and the channel estimation precision is improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more specifically, to a communication method and a communication device. Background Technology

[0002] In wireless communication, reference signals are transmitted between the transmitting and receiving ends to send and receive data, obtain system synchronization information, and provide feedback channel information. For example, the transmitting end sends a reference signal to the receiving end, which receives the reference signal and can then perform corresponding operations based on the reference information, such as performing channel measurements to obtain relevant channel state information. These reference signals are divided into uplink reference signals and downlink reference signals.

[0003] Assuming the reference signal is an uplink reference signal, network devices allocate resources to terminal devices for transmitting the uplink reference signal. In real-world network environments, the state of terminal devices may change dynamically. When a new terminal device joins the network, or when some terminal devices experience strong interference from neighboring cells, the network device needs to reconfigure and schedule resource allocation among the terminal devices via Radio Resource Control (RRC) signaling. Considering the significant transmission delay of RRC signaling, it may be unable to track the dynamic changes of terminal devices or the dynamic changes of inter-cell reference signal interference in a timely manner, leading to significant inter-cell reference signal interference and thus affecting the accuracy of channel estimation based on the uplink reference signal by the network device. Summary of the Invention

[0004] This application provides a communication method and a communication device that reduces interference between inter-cell reference signals by dynamically adjusting the frequency domain resources of the transmission reference signal, thereby improving the accuracy of channel estimation.

[0005] Firstly, a communication method is provided. This method can be executed by a terminal side, or by other entities, and this application does not limit the scope of execution. The terminal side includes a terminal device, or functional modules, communication modules, chips, chip systems or circuits within the terminal device (such as modem chips, also known as baseband chips, or system-on-chip (SoC) chips or system-in-package (SIP) chips containing modem cores), or functional modules within the terminal device capable of calling and executing programs. For ease of description, the following explanation uses a terminal device as an example.

[0006] The method includes: receiving indication information, the indication information indicating that frequency domain resources for transmitting a reference signal be updated, the frequency domain resources including at least one of the following: the position of the frequency domain resources for transmitting the reference signal, the number of frequency domain resources for transmitting the reference signal, or the order of the frequency domain resources for transmitting the reference signal; and transmitting the reference signal according to the updated frequency domain resources based on the indication information.

[0007] According to the method provided in this application, the terminal device can dynamically adjust the frequency domain resources of the transmission reference signal through indication information. Specifically, it can adjust one or more of the following: the position of the frequency domain resources, the number of frequency domain resources, or the order of frequency domain resources of the transmission reference signal, thereby realizing the dynamic adjustment of the frequency domain resources of the transmission reference signal, reducing the interference of inter-cell reference signals, and improving the channel estimation accuracy.

[0008] In conjunction with the first aspect, in some possible implementations, the indication information includes one or more of the following:

[0009] Transmission comb, comb offset value, frequency hopping parameters, frequency hopping pattern index, frequency domain start position, or frequency domain offset value.

[0010] In one possible implementation, 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.

[0011] In conjunction with the first aspect, in some possible implementations, the indication information includes the transmission comb, which is related to the amount of frequency domain resources for transmitting the reference signal, and the transmission comb is used to update one or more of the following: the number of frequency domain subcarriers occupied by the transmission of the reference signal, the position of the frequency domain subcarriers, or the length of the reference signal transmission sequence.

[0012] In conjunction with the first aspect, in some possible implementations, the indication information includes a comb offset value, which is related to the frequency domain resource location for transmitting the reference signal, and the comb offset value is used to update the frequency domain subcarrier location occupied by the transmission of the reference signal.

[0013] In conjunction with the first aspect, in some possible implementations, the indication information includes the frequency hopping pattern index, which is related to the order of frequency domain resources used to transmit the reference signal, and the frequency hopping pattern index is used to update the order of multiple frequency domain subbands occupied by multiple consecutive transmissions of the reference signal.

[0014] In conjunction with the first aspect, in some possible implementations, the frequency hopping pattern index includes an index of a first-level frequency hopping pattern and / or an index of a second-level frequency hopping pattern, wherein the first frequency hopping pattern corresponds to a frequency domain bandwidth X1 for transmitting the reference signal N times, and the second frequency hopping pattern corresponds to a frequency domain bandwidth X2 for transmitting the reference signal once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0015] In conjunction with the first aspect, in some possible implementations, the indication information includes 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 the frequency domain resource order for transmitting the reference signal, and the frequency domain start position and / or the frequency domain offset value being used to update the order of multiple frequency domain subbands occupied by the reference signal being transmitted multiple times consecutively.

[0016] In conjunction with the first aspect, in some possible implementations, receiving the instruction information includes:

[0017] Receive the instruction information at the first moment.

[0018] According to the instruction information, the reference signal is transmitted according to the updated frequency domain resources, including:

[0019] Based on the indicated information, the reference signal is transmitted at the second time point according to the updated frequency domain resources.

[0020] The time interval between the first time point and the second time point is not zero.

[0021] It should be understood that the time interval between the first and second moments can be the processing time for the terminal device to determine the updated frequency hopping pattern based on the received instruction information. Accordingly, in one possible implementation, after receiving the instruction information and determining the updated frequency hopping pattern based on the instruction information, the terminal device can also send response / feedback information to the network device, such as acknowledgment (ACK) feedback or negative acknowledgment (NACK) feedback.

[0022] In conjunction with the first aspect, in some possible implementations, before 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, wherein the first-level frequency hopping pattern corresponds to a frequency domain bandwidth X1 for transmitting the reference signal N times, and the second-level frequency hopping pattern corresponds to a frequency domain bandwidth X2 for transmitting the reference signal once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0023] In one possible implementation, before receiving the indication information, the method further includes: receiving configuration information for determining a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2, wherein the first frequency domain bandwidth X1 is used to transmit the reference signal N times, and the second frequency domain bandwidth X2 is used to transmit the reference signal once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0024] It should be understood that the N reference signals can be considered as reference signals belonging to the same group of transmissions. The frequency domain bandwidth corresponding to the N reference signals transmitted within this same group is X1. Alternatively, it can be understood that the first-level frequency hopping pattern can be used to determine the frequency domain bandwidth X1 of the N reference signals transmitted within the same group, and the second-level frequency hopping pattern can be used to determine the frequency domain bandwidth X2 of a single transmission of the reference signal within the same group.

[0025] Based on the above scheme, the terminal device determines the first-level frequency hopping pattern and the second-level frequency hopping pattern of the transmission reference signal through configuration information. In this method, by defining the first-level and second-level frequency hopping patterns, the bandwidth of the terminal device's single transmission of the reference signal is further reduced, the transmission power of the terminal device's single transmission of the reference signal is increased, and the accuracy of channel measurement estimation based on the reference signal is improved.

[0026] In conjunction with the first aspect, in some possible implementations, the frequency domain resources occupied by the N transmitted reference signals are continuous, the frequency domain start positions are different between the first-level frequency hopping patterns, and in the case of first-level frequency hopping patterns with continuous time domain resources, the frequency domain interval between the frequency domain start positions is greater than the frequency domain bandwidth X1.

[0027] In conjunction with the first aspect, in some possible implementations, the first-level frequency hopping pattern is determined based on one or more of the following information:

[0028] The value of N, the counting rule for transmitting the reference signal, the frequency domain bandwidth X1, or the frequency domain starting position for transmitting the reference signal N times in the first-level frequency hopping pattern.

[0029] In conjunction with the first aspect, in some possible implementations, the configuration information includes one or more of the following:

[0030] The value of N can be 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.

[0031] In conjunction with the first aspect, in some possible implementations, the value of N is determined based on one or more of the following methods:

[0032] Method 1: Obtain the value of N from the predefined set of values ​​for N in the protocol;

[0033] Method 2: Determine the value of N based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2;

[0034] Method 3: Determine the value of N based on the frequency domain bandwidth X1, the frequency domain bandwidth X2, and the frequency domain repetition factor R.

[0035] It should be understood that, under the implementation of method 1 above, the configuration information may include indication information for obtaining the value of N from the predefined set of values ​​of N. The terminal device can obtain the corresponding N from the predefined set of values ​​of N through the indication information.

[0036] In conjunction with the first 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.

[0037] 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.

[0038] In one possible implementation, the value of the transmission counter is n. SRS ,satisfy:

[0039] or

[0040]

[0041] in, n represents the number of time slots within a system frame. f Indicates the system frame number. T represents the slot number within a system frame. offset T represents the time slot offset value. SRS The time slot period is represented by l′, the symbol number is represented by l′, and the symbol repetition factor is represented by R.

[0042] In conjunction with the first aspect, among some possible ways of implementation,

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

[0044]

[0045] In frequency domain bandwidth In the case of a single transmission, the length of the pilot sequence corresponding to the reference signal is... satisfy:

[0046]

[0047] 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.

[0048] In conjunction with the first 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:

[0049]

[0050] or.

[0051]

[0052] Where, n RRC The frequency domain start index of the reference signal is represented by m. SRS,b n represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission. SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter.

[0053] It should be understood that the "·" or "*" in the formulas of this application represent "multiply", and " / " represents "divide".

[0054] In conjunction with the first aspect, in some possible implementations, 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 ,satisfy:

[0055]

[0056] or.

[0057]

[0058] Where, n RRC The frequency domain start index of the reference signal is represented by m. SRS,bThe m represents the number of frequency domain resource blocks occupied by a single transmission of the reference signal. SRS,b It is determined based on the second frequency domain bandwidth X2, n SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter.

[0059] In conjunction with the first aspect, in some possible implementations, the configuration information includes a second-level frequency domain position index n for indicating the second-level frequency hopping pattern. b2 The second-level frequency domain position index n b2 Used to determine the locations of the N frequency domain resources occupied by the N transmitted reference signals.

[0060] In conjunction with the first aspect, in some possible implementations, the second frequency domain bandwidth X2 and the second-level frequency domain position index n b2 Correspondingly, the second-level frequency domain position index n b2 Used to determine the frequency domain resource location of a single transmission of the reference signal among N transmissions of the reference signal.

[0061] In conjunction with the first aspect, in some possible implementations, the first-level frequency domain position index n corresponding to the first frequency hopping pattern b1 The second-level frequency domain position index n corresponding to the second frequency hopping pattern b2 The index n used to determine the frequency domain resource location of the reference signal in the i-th group and the j-th transmission. b (i, j), the index n b (i, j), satisfying:

[0062] n b (i, j) = n b1 *N+n b2 ;

[0063] or,

[0064]

[0065] Wherein, the first-level frequency domain position index n b1 ,satisfy:

[0066]

[0067] or,

[0068]

[0069] Second-level frequency domain position index n b2 The n frequencies are used to determine the locations of the N frequency domain resources occupied by the N transmitted reference signals. RRCThe frequency domain start index of the reference signal is represented by m. SRS,b n represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission. SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter, where the value of i is related to the value of n. SRS The values ​​of the reference signals transmitted in the first-level frequency hopping pattern are equal, and the values ​​of the transmission counters corresponding to the N transmissions of the reference signals in the same group corresponding to i are the same. j represents any one of the N transmissions of the reference signals in the same group corresponding to i, and n is the first-level frequency domain position index corresponding to the N transmissions of the reference signals in the same group. b1 Similarly, the second-level frequency domain position index n corresponding to the N reference signals transmitted within the same group. b2 different.

[0070] In conjunction with the first aspect, in some possible implementations, sending the reference signal based on the configuration information includes:

[0071] Based on the first-level frequency domain position index n b1 and the second-level frequency domain position index n b2 Obtain the index n of the frequency domain resource location of the reference signal transmitted in the i-th group for the j-th time. b (i,j);

[0072] The reference signal is transmitted at the frequency domain resource location.

[0073] Wherein, the index n b (i,j) satisfies:

[0074] n b (i,j)=n b1 *N+n b2 ;

[0075] or,

[0076]

[0077] First-level frequency domain position index n b1 ,satisfy:

[0078]

[0079] or,

[0080]

[0081] Wherein, the second-level frequency domain position index n b2 The n are used to determine the frequency domain resource location of a single transmission of the reference signal among N transmissions of the reference signal.RRC The frequency domain start index of the reference signal is represented by m. SRS,b n represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission. SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter, where the value of i is related to the value of n. SRS The values ​​of are equal, where j represents any one of the N reference signals transmitted within the same group corresponding to i, and n is the first-level frequency domain position index corresponding to the N reference signals transmitted within the same group. b1 Similarly, the second-level frequency domain position index n corresponding to the N reference signals transmitted within the same group. b2 different.

[0082] It should be understood that the first-level frequency domain position index can be interpreted as the frequency domain position index used to determine the group level (e.g., N reference signals can be considered as the same group), and the second-level frequency domain position index can be interpreted as the specific frequency domain position index used to determine each reference signal within the N reference signals in the group. These first-level and second-level frequency domain position indices can be used to determine the specific frequency domain resource location of each transmitted reference signal within the N reference signals.

[0083] In conjunction with the first aspect, in some possible implementations, the sequences of the reference signals are adjacent when the frequency domain resources of the reference signals are adjacent; or, the sequences of the uplink reference signals are adjacent when the transmission counter values ​​of the reference signals are adjacent.

[0084] In conjunction with the first aspect, in some possible implementations, the configuration information includes a first parameter for determining at least one frequency hopping pattern among the first-level frequency hopping pattern and the second-level frequency hopping pattern. The first parameter includes one or more of the following parameters: frequency domain start position, frequency domain offset, frequency hopping parameter, transmission comb, comb offset, or frequency hopping pattern index.

[0085] It should be understood that the frequency domain start position, frequency domain offset, frequency hopping parameter, transmission comb, comb offset, or frequency hopping pattern index included in the first parameter can all be used to determine at least one frequency hopping pattern in the first-level frequency hopping pattern and the second-level frequency hopping pattern. For specific examples of how to determine the frequency hopping pattern, please refer to the relevant description in the specific embodiments.

[0086] Secondly, a communication method is provided. This method can be executed by the network side, or by other entities, and this application does not limit the scope of execution. The network side includes a network device, or a functional module, communication module, chip, chip system, or circuit within the network device, or a central unit (CU) or distributed unit (DU) within the network device, or a functional module within the network device capable of calling and executing a program. For ease of description, the following explanation uses execution by the network device as an example.

[0087] The method includes: determining indication information, the indication information indicating an update of frequency domain resources for transmitting a reference signal, the frequency domain resources including at least one of the following: the location 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; and sending the indication information.

[0088] In one possible implementation, 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.

[0089] According to the method provided in this application, a network device can dynamically adjust the frequency domain resources of the transmission reference signal by sending indication information. Specifically, it can adjust one or more of the following: the position of the frequency domain resources, the quantity of frequency domain resources, or the order of frequency domain resources of the transmission reference signal, thereby realizing dynamic adjustment of the frequency domain resources of the transmission reference signal, reducing interference between inter-cell reference signals, and improving channel estimation accuracy.

[0090] In conjunction with the second aspect, in some possible implementations, the indication information includes one or more of the following:

[0091] Transmission comb, comb offset value, frequency hopping parameters, frequency hopping pattern index, frequency domain start position, or frequency domain offset value.

[0092] In one possible implementation, the indication information can be carried in one or more of the following signaling methods: RRC signaling, MAC-CE signaling, or DCI signaling.

[0093] In conjunction with the second aspect, in some possible implementations, the indication information includes the transmission comb, which is related to the amount of frequency domain resources for transmitting the reference signal, and the transmission comb is used to update one or more of the following: the number of frequency domain subcarriers occupied by the transmission of the reference signal, the position of the frequency domain subcarriers, or the length of the reference signal transmission sequence.

[0094] In conjunction with the second aspect, in some possible implementations, the indication information includes a comb offset value, which is related to the frequency domain resource location for transmitting the reference signal, and the comb offset value is used to update the frequency domain subcarrier location occupied by the transmission of the reference signal.

[0095] In conjunction with the second aspect, in some possible implementations, the indication information includes the frequency hopping pattern index, which is related to the order of frequency domain resources used to transmit the reference signal, and the frequency hopping pattern index is used to update the order of multiple frequency domain subbands occupied by multiple consecutive transmissions of the reference signal.

[0096] In conjunction with the second aspect, in some possible implementations, the frequency hopping pattern index includes an index of a first-level frequency hopping pattern and / or an index of a second-level frequency hopping pattern, wherein the first frequency hopping pattern corresponds to a frequency domain bandwidth X1 for transmitting the reference signal N times, and the second frequency hopping pattern corresponds to a frequency domain bandwidth X2 for transmitting the reference signal once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0097] In conjunction with the second aspect, in some possible implementations, the indication information includes 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 the frequency domain resource order for transmitting the reference signal, and the frequency domain start position and / or the frequency domain offset value being used to update the order of multiple frequency domain subbands occupied by the reference signal being transmitted multiple times consecutively.

[0098] In conjunction with the second aspect, in some possible implementations, the method further includes, prior to sending the indication information:

[0099] Send configuration information, which is used to determine the first-level frequency hopping pattern and the second-level frequency hopping pattern for transmitting the reference signal. The first-level frequency hopping pattern corresponds to the frequency domain bandwidth X1 for transmitting the reference signal N times, and the second-level frequency hopping pattern corresponds to the frequency domain bandwidth X2 for transmitting the reference signal once. Here, X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0100] In conjunction with the second aspect, in some possible implementations, before 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 to transmit the reference signal N times, and the second frequency domain bandwidth X2 being used to transmit the reference signal once, wherein X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0101] It should be understood that the N reference signals can be considered as reference signals belonging to the same group of transmissions. The frequency domain bandwidth corresponding to the N reference signals transmitted within this same group is X1. Alternatively, it can be understood that the first-level frequency hopping pattern can be used to determine the frequency domain bandwidth X1 of the N reference signals transmitted within the same group, and the second-level frequency hopping pattern can be used to determine the frequency domain bandwidth X2 of a single transmission of the reference signal within the same group.

[0102] In conjunction with the second aspect, in some possible implementations, the first-level frequency hopping pattern is determined based on one or more of the following information:

[0103] The value of N, the counting rule for transmitting the reference signal, the frequency domain bandwidth X1, or the frequency domain starting position for transmitting the reference signal N times in the first-level frequency hopping pattern.

[0104] In conjunction with the second aspect, in some possible implementations, the configuration information includes one or more of the following:

[0105] The value of N can be 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.

[0106] In conjunction with the second aspect, in some possible implementations, the value of N is determined based on one or more of the following methods:

[0107] Method 1: Obtain the value of N from the predefined set of values ​​for N in the protocol;

[0108] Method 2: Determine the value of N based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2;

[0109] Method 3: Determine the value of N based on the frequency domain bandwidth X1, the frequency domain bandwidth X2, and the frequency domain repetition factor R.

[0110] It should be understood that, under the implementation of method 1 above, the configuration information may include indication information for obtaining the value of N from the predefined set of values ​​of N. The terminal device can obtain the corresponding N from the predefined set of values ​​of N through the indication information.

[0111] 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.

[0112] 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.

[0113] In one possible implementation, the value of the transmission counter is n. SRS ,satisfy:

[0114] or

[0115]

[0116] in, n represents the number of time slots within a system frame. f Indicates 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.

[0117] In conjunction with the second aspect, among some possible implementation methods,

[0118] In frequency domain bandwidth In the case of a single transmission, the length of the pilot sequence corresponding to the reference signal is... satisfy:

[0119]

[0120] In frequency domain bandwidth In the case of a single transmission, the length of the pilot sequence corresponding to the reference signal is... satisfy:

[0121]

[0122] 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.

[0123] 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:

[0124]

[0125] or,

[0126]

[0127] Where, n RRC The frequency domain start index of the reference signal is represented by m. SRS,b n represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission. SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter.

[0128] In conjunction with the second aspect, in some possible implementations, 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 ,satisfy:

[0129]

[0130] or,

[0131]

[0132] Where, n RRC The frequency domain start index of the reference signal is represented by m. SRS b represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission, and m SRS,b It is determined based on the second frequency domain bandwidth X2, n SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter.

[0133] In conjunction with the second aspect, in some possible implementations, the configuration information includes a second-level frequency domain position index n for indicating the second-level frequency hopping pattern. b2 The second-level frequency domain position index n b2 Used to determine the locations of the N frequency domain resources occupied by the N transmitted reference signals.

[0134] In conjunction with the second aspect, in some possible implementations, the second frequency domain bandwidth X2 and the second-level frequency domain position index n b2Correspondingly, the second-level frequency domain position index n b2 Used to determine the frequency domain resource location of a single transmission of the reference signal among N transmissions of the reference signal.

[0135] In conjunction with the second aspect, in some possible implementations, the first-level frequency domain position index n corresponding to the first frequency hopping pattern b1 The second-level frequency domain position index n corresponding to the second frequency hopping pattern b2 The index n used to determine the frequency domain resource location of the reference signal in the i-th group and the j-th transmission. b (i, j), the index n b (i, j), satisfying:

[0136] n b (i, j) = n b1 *N+n b2 ;

[0137] or.

[0138]

[0139] Wherein, the first-level frequency domain position index n b1 ,satisfy:

[0140]

[0141] or.

[0142]

[0143] Second-level frequency domain position index n b2 The n frequencies are used to determine the locations of the N frequency domain resources occupied by the N transmitted reference signals. RRC The frequency domain start index of the reference signal is represented by m. SRS,b n represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission. SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter, where the value of i is related to the value of n. SRS The values ​​of the reference signals transmitted in the first-level frequency hopping pattern are equal, and the values ​​of the transmission counters corresponding to the N transmissions of the reference signals in the same group corresponding to i are the same. j represents any one of the N transmissions of the reference signals in the same group corresponding to i, and n is the first-level frequency domain position index corresponding to the N transmissions of the reference signals in the same group. b1 Similarly, the second-level frequency domain position index n corresponding to the N reference signals transmitted within the same group. b2 different.

[0144] In conjunction with the second aspect, in some possible implementations, the first-level frequency domain position index n b1 and the second-level frequency domain position index n b2 The index n used to obtain the frequency domain resource location of the reference signal transmitted in the i-th group for the j-th time. b (i, j), the index n b (i, j) satisfy:

[0145] n b (i, j) = n b1 *N+n b2 ;

[0146] or.

[0147]

[0148] First-level frequency domain position index n b1 ,satisfy:

[0149]

[0150] or.

[0151]

[0152] Wherein, the second-level frequency domain position index n b2 The n are used to determine the frequency domain resource location of a single transmission of the reference signal among N transmissions of the reference signal. RRC The frequency domain start index of the reference signal is represented by m. SRS , b represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission, n SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter, where the value of i is related to the value of n. SRS The values ​​of are equal, where j represents any one of the N reference signals transmitted within the same group corresponding to i, and n is the first-level frequency domain position index corresponding to the N reference signals transmitted within the same group. b1 Similarly, the second-level frequency domain position index n corresponding to the N reference signals transmitted within the same group. b2 different.

[0153] It should be understood that the first-level frequency domain position index can be interpreted as the frequency domain position index used to determine the group level (e.g., N reference signals can be considered as the same group), and the second-level frequency domain position index can be interpreted as the specific frequency domain position index used to determine each reference signal within the N reference signals in the group. These first-level and second-level frequency domain position indices can be used to determine the specific frequency domain resource location of each transmitted reference signal within the N reference signals.

[0154] In conjunction with the second aspect, in some possible implementations, the reference signals are sequentially adjacent when their frequency domain resources are adjacent; or,

[0155] When the transmission counter values ​​between the reference signals are adjacent, the sequences of the uplink reference signals are adjacent.

[0156] In conjunction with the second aspect, in some possible implementations, the configuration information includes a first parameter, which is used to determine at least one frequency hopping pattern among the first-level frequency hopping pattern and the second-level frequency hopping pattern. The first parameter includes one or more of the following parameters: frequency domain start position, frequency domain offset, frequency hopping parameter, transmission comb, comb offset, or frequency hopping pattern index.

[0157] Thirdly, a communication apparatus is provided for performing the method in any possible implementation of the first or second aspect described above. Specifically, the apparatus may include units and / or modules for performing the method in any possible implementation of the first or second aspect, such as processing units and / or communication units.

[0158] In one implementation, the device is a communication device (such as a terminal device or a network device). When the device is a communication device, the communication unit can be a transceiver or an input / output interface; 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.

[0159] In another implementation, the device is a chip, chip system, circuit, or communication module for communication equipment (such as terminal equipment or network equipment). When the device is a chip, chip system, or circuit for communication equipment, the communication unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit may be at least one processor, processing circuit, or logic circuit.

[0160] Fourthly, a communication device is provided, comprising: at least one processor for executing a computer program or instructions to perform the method in any possible implementation of the first or second aspect described above. Optionally, the device further comprises a memory for storing the computer program or instructions. Optionally, the device further comprises a communication interface coupled to the processor, which can be used to input the computer program or instructions to the processor or to output information from the processor.

[0161] In one implementation, the device is a communication device (such as a terminal device or a network device).

[0162] In another implementation, the device is a chip, chip system, circuit, or communication module for communication equipment (such as terminal equipment or network equipment).

[0163] Fifthly, a processor is provided for performing the methods provided in the first or second aspect above.

[0164] Unless otherwise specified, or if it does not contradict its actual function or internal logic in the relevant description, the transmission and acquisition / reception operations involved in the processor can be understood as processor output and reception, input and other operations, or as transmission and reception operations performed by radio frequency circuits and antennas. This application does not limit them in this regard.

[0165] Optionally, the device further includes: a memory for storing a program; correspondingly, at least one processor for executing the computer program or instructions in the memory.

[0166] Optionally, the device also includes a communication interface. The communication interface is coupled to the processor and can be used to input information to the processor or output information from the processor.

[0167] In a sixth aspect, a computer-readable storage medium is provided that stores program code for execution by a device, the program code including methods for performing any possible implementation of the first or second aspect described above.

[0168] In a seventh aspect, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the method in any possible implementation of the first or second aspect described above.

[0169] Eighthly, a chip is provided, the chip including a processor and a communication interface, the processor reading instructions from a memory through the communication interface and executing the method provided by any of the above implementations of the first or second aspect.

[0170] Optionally, the chip is 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.

[0171] Optionally, as one implementation, the chip also includes a memory storing computer programs or instructions, and a processor for executing the computer programs or instructions in the memory. When the computer programs or instructions are executed, the processor is used to perform the method provided by any of the above implementations of the first or second aspect.

[0172] Ninth aspect, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the method provided by any of the above implementations of the first or second aspect.

[0173] In a tenth aspect, a communication system is provided, including the aforementioned terminal equipment and network equipment. Attached Figure Description

[0174] Figure 1 This is a schematic diagram of a wireless communication system applicable to embodiments of this application.

[0175] Figure 2 This is another schematic diagram of a wireless communication system applicable to embodiments of this application.

[0176] Figure 3 This is a schematic diagram of a frequency-hopping SRS transmission.

[0177] Figure 4 This is a schematic diagram of another type of frequency-hopping SRS transmission.

[0178] Figure 5 This is a tree structure diagram corresponding to CSRS=18 in the SRS bandwidth configuration table.

[0179] Figure 6 This is a schematic diagram of a communication method 600 provided in an embodiment of this application.

[0180] Figure 7 This is a schematic diagram of a frequency hopping transmission SRS provided in an embodiment of this application.

[0181] Figure 8 This is a schematic diagram of another frequency hopping transmission SRS provided in an embodiment of this application.

[0182] Figure 9 This is a schematic diagram of another frequency hopping transmission SRS provided in an embodiment of this application.

[0183] Figure 10 This is a schematic diagram of a first-level frequency hopping pattern and a second-level frequency hopping pattern applicable to embodiments of this application.

[0184] Figure 11 This is a schematic diagram of a second-level frequency hopping pattern applicable to embodiments of this application.

[0185] Figure 12 This is a schematic diagram of a communication device 1200 provided in an embodiment of this application.

[0186] Figure 13 This is a schematic diagram of another communication device 1300 provided in an embodiment of this application.

[0187] Figure 14 This is a schematic diagram of a chip system 1400 provided in an embodiment of this application. Detailed Implementation

[0188] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0189] The technical solutions provided in this application can be applied to various communication systems, such as 5th generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, and LTE time division duplex (TDD) systems. The technical solutions provided in this application can also be applied to future communication systems, such as future mobile communication systems. The technical solutions provided in this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and Internet of Things (IoT) communication systems. The technical solutions provided in this application can also be applied to low-frequency scenarios, high-frequency scenarios, and terahertz frequencies.

[0190] The technical solutions provided in this application can also be applied to non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication. As an example, a satellite communication system includes a satellite base station and terminal equipment. The satellite base station provides communication services to the terminal equipment. The satellite base station can also communicate with other base stations. A satellite can act as a base station or as a terminal device. Here, "satellite" can refer to unmanned aerial vehicles (UAVs), hot air balloons, low-Earth orbit (LEO) satellites, medium-Earth orbit (MEO) satellites, high-Earth orbit (HEO) satellites, etc. "Satellite" can also refer to non-terrestrial base stations or non-terrestrial equipment, etc.

[0191] In a communication system, a device can send signals to or receive signals from another device. These signals can include information, signaling, or data. The term "device" can also be replaced by an entity, network entity, network element, communication equipment, communication module, node, communication node, etc. This disclosure uses "device" as an example. For instance, a communication system can include at least one terminal device and at least one network device. The network device can send downlink signals to the terminal device, and / or the terminal device can send uplink signals to the network device.

[0192] The terminal device in this application embodiment can be a device or module that accesses the aforementioned communication system and has corresponding communication functions. The terminal device can include various devices with wireless communication capabilities, which can be used to connect people, objects, machines, etc. The terminal device can be widely applied 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, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, robots, 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. Terminal equipment can be user equipment (UE), terminal, fixed equipment, mobile station equipment or mobile equipment, subscriber unit, handheld device, vehicle-mounted equipment, wearable device, cellular phone, smartphone, session initiation protocol (SIP) phone, wireless data card, personal digital assistant (PDA), computer, tablet computer, laptop computer, wireless modem, handset, laptop computer, computer with wireless transceiver capability, smart book, vehicle, satellite, global positioning system (GPS) device, target tracking device, aircraft (e.g., drone, helicopter, multiple helicopters, four helicopters, or airplanes), ship, remote control device, smart home device, industrial equipment, transportation vehicle with wireless communication capability, communication module, or roadside unit with terminal function, all conforming to the 3GPP standard. The terminal device (RSU) can be a unit or a device built into the aforementioned equipment (e.g., a communication module, modem, or chip in the aforementioned equipment), or other processing devices connected to a wireless modem. For ease of description, the terminal device will be described below as a terminal or UE.

[0193] It should be understood that in certain scenarios, a UE can also be used as a base station. For example, a UE can act as a scheduling entity, providing sidelink signaling between UEs in scenarios such as V2X, D2D, or P2P.

[0194] In this embodiment, the device for implementing the functions of a terminal device, i.e., the terminal device, can be the terminal device itself, or it can be any device capable of supporting the terminal device in implementing the functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed in the terminal device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can also be configured with program instructions for performing corresponding communication functions.

[0195] The network device in this application embodiment can be a device or module with corresponding communication functions. The network device can be a device used to communicate with terminal devices; it can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitter, master station, auxiliary station, motor slide retainer (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. A base station can be a macro base station, micro base station, relay node, donor node, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, a device that performs base station functions in D2D, V2X, and M2M communications, or a device that performs base station functions in future communication systems. A base station can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0196] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0197] In some deployments, the network devices mentioned in the embodiments of this application may be devices including CU, DU, or CU and DU, or devices with control plane CU nodes (central unit-control plane (CU-CP)) and user plane CU nodes (central unit-user plane (CU-UP)) and DU nodes. For example, the network devices may include gNB-CU-CP, gNB-CU-UP, and gNB-DU.

[0198] In some deployments, multiple RAN nodes collaborate to assist terminals in achieving wireless access, with different RAN nodes each implementing some of the base station's functions. For example, RAN nodes can be CUs, DUs, CU-CPs, CU-UPs, or radio units (RUs). CUs and DUs can be set up separately or included in the same network element, such as a BBU. RUs can be included in radio equipment or radio units, such as RRUs, AAUs, or RRHs.

[0199] In some deployments, the CU (Core Unit) is a logical node that carries the Radio Resource Control (RRC) layer, Service Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, and other control functions of the access network equipment. The CU connects to network nodes such as the core network through interfaces, which may be E2 interfaces, etc. Optionally, the CU possesses some core network functions. The CU (e.g., the PDCP layer and higher layers) connects to the DU (e.g., the Radio Link Control (RLC) layer and lower layers) through interfaces, which may be F1 interfaces, etc. In some examples, these interfaces (e.g., the F1 interface) can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). The F1 application protocol (F1AP) is the application protocol for the F1 interface, and in some examples, it defines the F1 signaling procedures. The F1 interface supports both the control plane (F1-C) and the user plane (F1-U).

[0200] In some deployments, the CU can be split into CU-CP and CU-UP. CU-CP is a logical node carrying the RRC layer and the control plane part of PDCP (PDCP-C) layer, used to implement the CU's control plane functions. CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be access and mobility function network elements. CU-UP is a logical node carrying the SDAP layer and the user plane part of PDCP (PDCP-U) layer, used to implement the CU's user plane functions. CU-UP can interact with network elements in the core network used to implement user plane functions. The above CU and DU configurations are merely examples; the functions of CU and DU can be configured as needed. For example, CU or DU can be configured to have more protocol layer functions, or CU or DU can be configured to have only partial protocol layer processing functions. For example, some functions of the RLC layer and the functions of the protocol layer above the RLC layer can be placed in the CU, while the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer can be placed in the DU. Another example is that the functions of the CU or DU can be divided according to service type or other system requirements. For instance, based on latency, functions that need to meet low latency requirements can be placed in the DU, while functions that do not need to meet such latency requirements can be placed in the CU.

[0201] In some deployments, the DU (Distributed Unit) is a logical node that carries the RLC (Real-Time Control) layer, the medium access control (MAC) layer, the higher physical layer (Higher PHY) layer, and other functions. In some examples, the DU can control at least one RU (Remote Root). The DU connects to the RU through interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0202] In some deployments, the RU is a logical node that carries both lower physical layer (PHY) and radio frequency (RF) processing. In some examples, the RU can be a TRP, RRH, or other similar entity. In some examples, the Low-PHY includes portions of the PHY processing, such as Fast Fourier Transform (FFT), Inverse Fast Fourier Transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link.

[0203] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a fronthaul link through a lower-layer split-control, user, and synchronization (LLS-CUS) interface. LLS-CUS may include interfaces providing control and user planes respectively. In some examples, the control plane refers to real-time control between the DU and RU. The DU and RU exchange management information via a fronthaul link interface (such as an LLS-M interface), and the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0204] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0205] In one possible design, the processing unit in the BBU used to implement baseband functions is called the baseband high (BBH) unit, and the processing unit in the RRU / AAU / RRH used to implement baseband functions is called the baseband low (BBL) unit.

[0206] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, a radio access network can also be an open radio access network (O-RAN) architecture. In an O-RAN system, CU can also be called an open CU (open CU, O-CU), DU can also be called an open DU (open DU, O-DU), CU-CP can also be called an open CU-CP (O-CU-CP), CU-UP can also be called an open CU-UP (O-CU-UP), and RU can also be called an open RU (open RU, O-RU). Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0207] In this embodiment, the device for implementing the functions of a network device can be a network device itself, or a device capable of supporting the network device in implementing those functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed within the network device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can be configured with program instructions for performing corresponding communication functions. This embodiment only uses a network device as an example to illustrate the device for implementing the functions of a network device, and does not limit the solution of this embodiment.

[0208] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located. Furthermore, terminal devices and network devices can be hardware devices, software functions running on dedicated hardware, or software functions running on general-purpose hardware, such as virtualization functions instantiated on a platform (e.g., a cloud platform), or entities that include dedicated or general-purpose hardware devices and software functions. This application does not limit the specific form of the terminal devices and network devices.

[0209] First, a brief introduction to the communication system applicable to the embodiments of this application is given below.

[0210] See Figure 1 , Figure 1 This is a schematic diagram of a wireless communication system applicable to embodiments of this application.

[0211] like Figure 1As shown, the wireless communication system includes a wireless access network 100. The wireless access network 100 can be a future (e.g., a future communication system) wireless access network or a traditional (e.g., 5G, 4G, 3G, or 2G) wireless access network. One or more terminal devices (120a-120j, collectively referred to as 12) can be interconnected or connected to one or more network devices (110a, 110b, collectively referred to as 110) within the wireless access network 100. Network elements in the wireless communication system are connected via interfaces (e.g., NG, Xn) or over-the-air interfaces.

[0212] Figure 1 This is just an illustration; the wireless communication system may also include other devices, such as core network (CN) equipment, wireless relay equipment, and / or wireless backhaul equipment. Figure 1 It is not shown in the middle.

[0213] See Figure 2 , Figure 2 This is another schematic diagram of a wireless communication system applicable to embodiments of this application.

[0214] like Figure 2 As shown, this wireless communication system may include core network equipment, access network equipment (such as RAN), and terminal equipment. Access network equipment communicates with the core network equipment via a backhaul link and with the terminal equipment via an air interface. For example, a BBU in the access network equipment communicates with the core network via a backhaul link, while an RU in the access network equipment communicates with the terminal equipment via an air interface. The BBU can communicate with the RU via a fronthaul link. The BBU and RU may or may not be co-located. In some deployments, the BBU includes at least one CU and at least one DU, and the CU and DU communicate with each other via a midhaul link.

[0215] Figure 2 This is just an illustration; the wireless communication system may also include other devices. Figure 2 It is not shown in the middle.

[0216] To facilitate a better understanding of the technical solution of this application, some related technologies involved in the technical solution of this application are introduced.

[0217] 1. Reference signal (RS).

[0218] Reference signals, also known as pilot signals, are essential in communication systems for transmitting and receiving data, obtaining system synchronization and feedback channel information, and estimating the uplink or downlink channel. Channel estimation refers to the process of reconstructing or recovering the received signal to compensate for signal distortion caused by channel fading and noise fading. It uses reference signals known to the transmitter and receiver to track the time and frequency domain changes of the channel. These reference signals are distributed across different resource elements (REs) in the time-frequency two-dimensional space within orthogonal frequency division multiplexing (OFDM) symbols, and have known amplitudes and phases.

[0219] At the physical layer, uplink communication can include the transmission of uplink physical channels and uplink signals. Uplink physical channels include the random access channel (PRACH), the physical uplink control channel (PUCCH), and the physical uplink shared channel (PUSCH), etc. Uplink signals include the sounding reference signal (SRS), the PUCCH de-modulation reference signal (PUCCH-DMRS), the PUSCH demodulation reference signal (PUSCH-DMRS), the phase noise tracking reference signal (PTRS), and the uplink positioning signal (RS), etc.

[0220] At the physical layer, downlink communication can include the transmission of downlink physical channels and downlink signals. Downlink physical channels include the physical broadcast channel (PBCH), the physical downlink control channel (PDCCH), and the physical downlink shared channel (PDSCH). Downlink signals include the primary synchronization signal (PSS) / secondary synchronization signal (SSS), the downlink control channel demodulation reference signal (PDCCH-DMRS), the downlink data channel demodulation reference signal (PDSCH-DMRS), the phase noise tracking signal (PTRS), the channel status information reference signal (CSI-RS), the cell reference signal (CRS) (not present in NR), the time / frequency tracking reference signal (TRS), and the LTE / NR positioning signal (positioning RS).

[0221] 2. Resources.

[0222] The resources in this application embodiment can be a set of resources / or resources that a network device can configure for a terminal device.

[0223] The resource set may include at least one of the following: a channel status 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.

[0224] In this application embodiment, a reference signal can correspond to a resource, and a reference signal can occupy a resource. A resource can be referred to as the resource of the reference signal. The resources in this application embodiment can include frequency domain resources and / or time domain resources, etc. Resources can also include at least one of the following: CSI-SSB resources, or CSI-IM resources, or NZP-CSI-RS resources, ZP-CSI-RS resources, sounding reference signal (SRS) resources, demodulation reference signal (DMRS) resources, PTRS resources, CRS resources, or TRS resources. In this application embodiment, the resource is described as a channel state information reference signal (CSI-RS) resource. CSI-RS resources are also written as channel state information reference signal (CSIRS) resources in this document. CSIRS resources can also be replaced with other resources. CSI-RS resources can also be understood as the resources occupied by CSI-RS, or can be replaced with the resources corresponding to CSI-RS, or replaced with the resources of CSI-RS.

[0225] 3. Detect reference signal.

[0226] Sounding reference signal (SRS): This is an uplink channel sounding signal, transmitted by the terminal device and received by the network device. The transmission method of the SRS includes the time-frequency resources, transmission beam, transmission power, etc., which are generally configured by the network device for the terminal device. Within the 3GPP related protocol framework, the network device can configure one or more SRS resource sets for the terminal device, and each SRS resource set contains one or more SRS resources.

[0227] Furthermore, in 3GPP related protocols, different SRS resource sets perform different functions. Generally, an SRS resource set can support four functions: {beamManagement, codebook, non-codebook, antennaSwitching}, or simply {BM, CB, NCB, AS}. Network devices can configure the usage of each SRS resource set through RRC signaling to inform terminal devices of the function of the corresponding SRS resource set. For example, when the purpose of an SRS resource set is antennaSwitching, the SRS corresponding to that SRS resource set is generally used to obtain complete uplink channel information. Assuming that in a TDD system, the channel has uplink reciprocity, meaning that the uplink and downlink channels are consistent, the SRS corresponding to that SRS resource can also obtain the downlink transmission channel (or downlink transmission precoding) through uplink channel measurement.

[0228] SRS can be used for uplink channel quality estimation and channel selection, calculating the uplink channel signal-to-interference-plus-noise ratio (SINR), and obtaining uplink channel coefficients. In TDD scenarios, where uplink and downlink channels are distinct, SRS can also be used to obtain downlink channel coefficients. Network devices can use the uplink / downlink channel coefficients estimated by SRS to determine the uplink / downlink precoding matrices, improving uplink / downlink transmission rates and increasing system capacity.

[0229] Network devices configure the time-frequency resource location occupied by SRS resources and the transmission method used to transmit SRS on those SRS resources via higher-layer signaling such as RRC signaling or MAC-CE signaling. The configuration information for each SRS resource (e.g., higher-layer parameter SRS resource) includes at least the index number of the SRS resource, the time-frequency location information occupied by the SRS resource, and the SRS transmission port number, which can be determined by the configuration parameters shown in Table 1. The minimum probe bandwidth for SRS resources supported by NR is 4 physical resource blocks (PRBs), and the frequency hopping bandwidths of different SRS resources are integer multiples of each other, with the frequency hopping pattern having a tree structure.

[0230] Table 1 SRS Resource Configuration Parameters

[0231]

[0232] SRS resource configuration can be time-domain typed as periodic, semi-static, or aperiodic. The configuration information for periodic SRS resources includes the period (e.g., 2ms, 5ms, 10ms, etc.) and offset parameters. After the network device configures the SRS resource via RRC signaling, the terminal device will send SRS on the determined SRS resource within a specific periodic slot according to the configuration information. The configuration information for aperiodic SRS resources does not include the period and offset parameters, but only a time-domain offset parameter K for the downlink control information (DCI) signaling that triggers the SRS. When the terminal device receives DCI signaling at time n, and the signaling indicates that the SRS is triggered, it will send SRS on the corresponding SRS resource at time n+K, where K and n are positive integers.

[0233] In one possible implementation, different terminal devices can use the same time-domain resources (e.g., symbols) or frequency-domain resources (e.g., subcarriers) when sending SRS to a network device.

[0234] For example, different terminal devices may use different subcarriers corresponding to the same symbol to transmit SRS to the network device. A terminal device may not transmit SRS on every subcarrier corresponding to a symbol, but instead selects a specific set of subcarrier bundles based on the transmission comb value and transmits SRS on the subcarriers within that specific bundle. For instance, a terminal device can use the configured number of transmission combs and comb offsets to determine the specific subcarriers it uses to transmit SRS. For example, a comb number of 2 means each terminal device occupies 6 subcarriers per resource block (RB), a comb offset of 0 means the terminal device uses subcarriers 1, 3, 5, 7, 9, and 11 to transmit SRS, and a comb offset of 1 means the terminal device uses subcarriers 2, 4, 6, 8, 10, and 12 to transmit SRS.

[0235] When the number of combs is greater than 1, different terminal devices are allowed to use frequency division multiplexing within the same OFDM symbol. This means different terminal devices can use different subcarriers within the same RB (Radio Receptor) of the same OFDM symbol to transmit SRS. For example, a transmission comb spacing of 2 allows two groups of terminal devices to use frequency multiplexing with a single subcarrier offset between the two groups. A larger number of combs allows for a greater number of terminal devices to be multiplexed within the same OFDM symbol, but each terminal device has fewer resource elements (e.g., time-frequency resources) for SRS transmission. In this case, the quality of SRS measurements may be degraded.

[0236] For example, different terminal devices may use the same resource elements (e.g., the same time-domain resources and the same frequency-domain resources) to transmit SRS using different cyclically shifted base sequences. Each terminal device can be configured to transmit a base sequence with a specific cyclic shift (e.g., a Zadoff-Chu sequence) as SRS. That is, by selecting the base sequence and using different cyclic shifts to shift each SRS, the SRS transmitted by different terminal devices are orthogonalized. For example, if the SRS transmitted by terminal device #1 using the first cyclic shift is orthogonal to the SRS transmitted by terminal device #2 using the second cyclic shift, then even if terminal device #1 and terminal device #2 use the same resource elements to transmit SRS, the interference between the SRS received by the network device from terminal device #1 and terminal device #2 remains very small.

[0237] The length of the base sequence can be determined based on the number of resource elements allocated by the SRS; for example, the length of the base sequence can be equal to the number of resource elements allocated by the SRS. The length of the base sequence can also be related to the number of resource blocks allocated to the SRS and the number of combs used, or it can be related to the number of usable cyclic shifts and the number of combs allocated by the SRS. For example, when the number of combs = 2, the maximum usable number of cyclic shifts = 8; when the number of combs = 4, the maximum usable number of cyclic shifts = 12; when the number of combs = 8, the maximum usable number of cyclic shifts = 6.

[0238] It should be understood that the aforementioned different cyclic shifts can also be allocated to multiple antenna ports of the same terminal device for transmitting SRS. For example, an SRS resource set of a terminal device may contain two SRS resources, such as 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 corresponding four antenna ports of the terminal device for transmitting SRS.

[0239] In another possible implementation, the terminal device can transmit SRS by frequency hopping, meaning that multiple SRS transmissions from a single terminal device can switch between different frequency bands.

[0240] It should be understood that frequency hopping refers to the switching of multiple SRS transmissions by a terminal device between different frequency bands within the frequency domain resources.

[0241] For example, if the transmission bandwidth of a single SRS transmission by a terminal device is less than the maximum value of the SRS transmission bandwidth (e.g., 272 resource blocks), the terminal device can use frequency hopping to configure the SRS resources and transmit the SRS using different portions of the SRS transmission bandwidth.

[0242] 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. To improve the accuracy of channel estimation obtained by the network device based on SRS, the bandwidth of the SRS transmitted by the terminal device in a single transmission can be reduced, and the frequency power spectral density of the SRS can be increased, thereby ensuring the uplink power of a single SRS transmission and improving the accuracy of the channel state information obtained by the network device.

[0243] See Figure 3 , Figure 3 This is a schematic diagram of a frequency-hopping SRS transmission. Figure 3The diagram illustrates single-bandwidth SRS transmission, two-subband frequency-hopping SRS transmission, and four-subband frequency-hopping SRS transmission. In the multiple-subband frequency-hopping SRS transmissions, the frequency domain resource location for each SRS frequency hopping transmission is random, and the sequence of each SRS frequency hopping transmission is independent. This results in each transmitted SRS potentially experiencing different multipath effects, leading to mutual interference of SRS signals at network devices, increasing the difficulty of channel estimation, and affecting the accuracy of channel estimation.

[0244] Specifically, the introduction to SRS transmission using frequency hopping is as follows:

[0245] SRS can support frequency hopping transmission, and the specific frequency hopping characteristics can be determined by parameters in both the time domain and the frequency domain.

[0246] The process of determining the time domain location of the SRS is as follows:

[0247] For example, in the time domain, SRS occupies N slots within a time slot. S (nrofSymbols) symbols (e.g., 1, 2, 4), with repetition factor (repetitionFactor, R) ∈ {1, 2, 4}, and satisfying R ≤ N S That is, repeating each symbol R times.

[0248] According to the repetitionFactor:

[0249] When R = N S At that time, SRS transmission in frequency hopping mode within a time slot is not supported;

[0250] When R = 1, N S When the frequency hopping frequency is 2 or 4, SRS can be transmitted in a frequency hopping manner within a time slot, specifically with a frequency hopping unit of one OFDM symbol.

[0251] When R = 2, N S When the value is 4, SRS can be transmitted in a frequency-hopping manner within a time slot, specifically in units of a pair of OFDM symbols (i.e., 2 OFDM symbols).

[0252] 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 frequency hopping mode within a time slot or in frequency hopping mode between time slots (i.e., according to the SRS period). Aperiodic SRS frequency hopping can only be performed within a time slot (i.e., all hopping is completed after one trigger).

[0253] The process for determining the SRS frequency domain location is as follows:

[0254] 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, sequence ID, and other information. 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.

[0255] Among them, C SRS Index number B configured for cell-specific SRS bandwidth. SRS Configure an index number for the user-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 indicates the starting frequency of the uplink system bandwidth available for SRS transmission (or 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).

[0256] 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.

[0257] 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.

[0258] 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 = BSRS For example, suppose B SRS =2, C SRS =9, by looking up Table 3, we can determine m SRS,b =8.

[0259] When b hop ≥B SRS At this time, the terminal device does not enable frequency hopping. That is, the terminal device transmits SRS in a non-frequency hopping manner. It should be understood that when transmitting SRS in a non-frequency hopping manner, the SRS transmitted by the terminal device in one transmission covers the entire configured bandwidth of the SRS resource.

[0260] When b hop <B SRS When this occurs, the terminal device enables frequency hopping. That is, the terminal device transmits SRS in frequency hopping mode. It should be understood that when transmitting SRS in frequency hopping mode, each SRS transmitted by the terminal device only covers a portion of the configured bandwidth of the SRS resource (i.e., one frequency hopping subband). The terminal device can transmit SRS multiple times within one frequency hopping cycle to cover the entire configured bandwidth of the SRS resource.

[0261] The current SRS transmission method is as follows:

[0262] (1) If b hop ≥B SRS (Without frequency hopping), frequency domain position index n b The value is fixed (constant) and satisfies:

[0263]

[0264] (2) If b hop <B SRS (Frequency hopping), frequency domain position index n b The value is fixed (constant) and satisfies:

[0265]

[0266] in.

[0267]

[0268] n SRS The number of SRS transmissions specific to the terminal device (the terminal device's transmit count), n SRS satisfy:

[0269]

[0270] The specific parameters and their values ​​in the above formulas can be found in Table 2 below:

[0271] Table 2

[0272]

[0273]

[0274] It should be noted that, with Figure 4 Let's take an example to illustrate this. Figure 4 In the frequency domain, a square represents 4 RBs. Therefore, the configured bandwidth of SRS resources includes 48 RBs. The number of RBs occupied by SRS on a time domain symbol is 12. Therefore, the terminal device can send SRS on 4 time domain symbols by frequency hopping. The bandwidth of each time domain symbol is one-quarter of the overall configured bandwidth. Figure 4 In the diagram, the small black squares represent the four Resource Blocks (RBs) that carry the SRS. It should be noted that... Figure 4 The four time-domain symbols can be four consecutive time-domain symbols or four non-consecutive time-domain symbols. This application does not limit this. Figure 4 The frequency hopping methods shown are only for illustrating how the SRS occupies frequency domain resources and do not limit how the SRS occupies time domain resources.

[0275] In combination with the above Figure 4 In the example, the number of frequency hopping in one frequency hopping cycle is the number of times the terminal device sends SRS within one frequency hopping cycle. For example, Figure 4 The number of frequency hopping operations is 4.

[0276] Optionally, the number of frequency hopping is equal to Where, N b According to C SRS This is determined using Table 3.

[0277] For example, suppose b hop =0, C SRS =9, B SRS If the frequency hopping count is 2, then the number of frequency hopping counts is 2 × 2 = 4.

[0278] Table 3

[0279]

[0280]

[0281] Based on the parameters in the SRS bandwidth configuration table described in Table 3 above, using C... SRS For example, with a bandwidth of 18, the corresponding row in the SRS bandwidth configuration table is shown in bold in Table 3. It can be seen that in B... SRS When the values ​​are 0, 1, 2, and 3 respectively, the total bandwidth of the 72 RBs can be divided into a tree structure. SRS For the bandwidth allocation corresponding to different values, please refer to [link / reference]. Figure 5 As shown.

[0282] In combination with the above Figure 3 and Figure 4 The SRS frequency hopping diagram shown in Figure 3 and the SRS bandwidth configuration table shown in Table 3 illustrate that during multiple sub-band frequency hopping SRS transmissions, the frequency domain resource location of each SRS frequency hopping transmission is random, and the sequence of each SRS frequency hopping transmission is independent. This results in each transmitted SRS potentially experiencing different multipath effects, leading to mutual interference of SRS signals at network devices, increasing the difficulty of channel estimation, and affecting the accuracy of channel estimation.

[0283] Furthermore, based on the existing NR protocol, the allocation of reference signal resources for terminal devices is generally configured by the network device to the terminal device via RRC. Since the number and types of terminal devices that need to be served in the network change dynamically, when a new terminal device joins the network or some terminal devices experience strong interference from neighboring cells, RRC reconfiguration is required to schedule the allocation of reference signal resources among the terminal devices. However, due to the large delay in RRC signaling, it cannot promptly track the dynamic changes in the serving terminal devices or the dynamic changes in inter-cell reference signal interference, resulting in significant inter-cell reference signal interference and affecting the accuracy of channel estimation based on uplink reference signals by the network device.

[0284] In view of this, this application proposes a communication method that aims to improve the accuracy of channel estimation by reducing interference between inter-cell reference signals.

[0285] Before introducing the scheme of this application, the following points should be noted.

[0286] (1) In this application, “instruction” may include direct instruction, indirect instruction, explicit instruction, and implicit instruction. When describing a certain instruction information for the purpose of instructing A, it can be understood that the instruction information carries A, directly instructs A, or indirectly instructs A.

[0287] In this application, the information indicated by the instruction information is called the information to be instructed. In specific implementations, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is a relationship between the other information and the information to be instructed. It can also indicate only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent. Furthermore, the information to be instructed can be sent as a whole or divided into multiple sub-information pieces, and the sending period and / or timing of these sub-information pieces can be the same or different.

[0288] (2) In this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission via the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY via the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0289] (3) In the various embodiments of this application, unless otherwise specified or logically conflicting, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0290] (4) In this application, the terms "first," "second," "#1," "#2," "#n1," "#n2," etc., are merely for descriptive convenience and are used to distinguish objects, and are not intended to limit the scope of the embodiments of this application. They are not used to describe the order or sequence of features. It should be understood that such described objects can be interchanged where appropriate so as to describe solutions other than those in the embodiments of this application.

[0291] (5) In this application, "predefined" can refer to a standard protocol predefined, or it can refer to a pre-agreed or pre-negotiated agreement between devices. In this application, "protocol" can refer to a standard protocol in the field of communications, such as the 5G protocol, the NR protocol, and related protocols applied in future communication systems, which this application does not limit. "Predefined" can include predefined, for example, protocol definitions. "Preconfiguration" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device, and this application does not limit the implementation method, for example.

[0292] (6) In this application, the words “exemplary,” “for example,” etc., are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as an “example” in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word “example” is intended to present the concept in a concrete manner. In the embodiments of this application, “of,” “corresponding, relevant,” and “corresponding” may sometimes be used interchangeably, and it should be noted that their intended meanings are consistent unless their distinction is emphasized.

[0293] The methods provided by the embodiments of this application are described in detail below with reference to the accompanying drawings. The embodiments provided by this application can be applied to the above-described embodiments. Figure 1 The communication system shown is not limited.

[0294] It should be understood that the embodiments of this application can be applied to communication scenarios where the terminal side and the network side communicate. For example, the network side may include network devices, CUs or DUs within the network devices, or modules (e.g., circuits, chips, or chip systems) within the network devices, or logical nodes, logical modules, or software capable of implementing all or part of the access network device functions. The terminal side may include terminal devices, communication modules within the terminal devices, or circuits or chips (such as modem chips, also known as baseband chips, or system-on-a-chip (SoC) chips containing modem cores, or system-in-package (SIP) chips) within the terminal devices responsible for communication functions, or logical nodes, logical modules, or software capable of implementing all or part of the access network device functions. For ease of description, the following communication methods are described using network devices and terminal devices as the execution entities. When the terminal side is another node, chip, circuit, or entity, or when the network side is another node, chip, circuit, or entity, the corresponding specific implementation methods are similar and will not be repeated.

[0295] It should also be understood that in the following embodiments, terminal devices and network devices are used as examples for illustrative purposes. The term "terminal device" can be replaced by a component of a terminal device (e.g., a chip, chip system, or circuit), and the term "network device" can be replaced by a component of a network device (e.g., a chip, chip system, or circuit).

[0296] See Figure 6 , Figure 6 This is a schematic diagram of a communication method 600 provided in an embodiment of this application. Figure 6 The method 600 shown may include the following steps.

[0297] 601. The network device sends configuration information to the terminal device, and the terminal device receives the configuration information from the network device accordingly.

[0298] It should be understood that this configuration information is used to determine the first-level frequency hopping pattern and the second-level frequency hopping pattern. The first-level frequency hopping pattern corresponds to the frequency domain bandwidth X1 of multiple (e.g., N) transmissions of the reference signal, and the second-level frequency hopping pattern corresponds to the frequency domain bandwidth X2 of a single transmission of the reference signal. X1, X2, and N are all integers greater than 1, and X2*N = X1.

[0299] It should also be understood that this configuration information can also be used to determine the frequency domain bandwidth X1 (or first frequency domain bandwidth X1) and the frequency domain bandwidth X2 (second frequency domain bandwidth X2).

[0300] It should also be understood that the reference signal in this application is SRS as an example to introduce the technical solution in this application. Of course, the method provided in this application can also be applied to other reference signals, which will not be listed one by one in this application.

[0301] It should also be understood that this configuration information can be transmitted via RRC configuration messages, RRC reconfiguration messages, MAC-CE, or DCI carried on the device or via separate signaling.

[0302] In one possible implementation, the configuration information includes a first parameter, which includes one or more of the following parameters: the value of N, the frequency domain start position, the frequency domain offset value, the frequency hopping parameter, the transmission comb, the comb offset value, or the frequency hopping pattern index, etc. 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.

[0303] As an example, the first parameter is used to determine the first-level frequency hopping pattern.

[0304] It should be understood that the frequency domain start position can be used to determine the start position of the first-level frequency hopping pattern in transmitting SRS in the frequency domain; the frequency domain offset value can be used to determine the offset value of the frequency hopping bandwidth of the first-level frequency hopping pattern in transmitting SRS; the frequency hopping parameter can be used to determine the configuration bandwidth of the first-level frequency hopping pattern in transmitting SRS (or the frequency hopping bandwidth corresponding to the first-level frequency hopping pattern, such as X1); the transmission comb can be used to determine the number of subcarriers occupied by the frequency domain resources for multiple transmissions of SRS in the first-level frequency hopping pattern; the comb offset value can be used to determine the position of the frequency domain resources used for multiple transmissions of SRS in the first-level frequency hopping pattern; the frequency hopping pattern index corresponds one-to-one with the first-level frequency hopping pattern, and the frequency hopping pattern index is used to determine the position of the frequency domain resources for transmitting SRS corresponding to the first-level frequency hopping pattern.

[0305] For example, a first parameter (e.g., a frequency hopping parameter) can be used to determine the configured bandwidth of the SRS, which includes one or more frequency hopping subbands. For instance, the configured bandwidth of the SRS includes L frequency hopping subbands, where L is a positive integer. Exemplarily, the terminal device can use the frequency hopping parameter b configured for it by the network device. hop and C SRS And the number of RBs m that the SRS accounts for as a whole, as determined in Table 3 above. SRS,b′ That is, the configuration bandwidth (or frequency hopping bandwidth) of SRS, where b′=b hop The terminal device can use the parameter B configured by the network device for the terminal device. SRS and C SRS And Table 3 determines the number of RBs m that SRS occupies on each symbol. SRS,b That is, the number of RBs occupied by the frequency hopping subband, where b = B SRS

[0306] Each frequency-hopping subband has the same bandwidth (i.e., each frequency-hopping subband occupies the same number of RBs). For example, any two frequency-hopping subbands do not overlap; that is, no two frequency-hopping subbands have the same RBs. The first frequency-hopping subband is any one of one or more frequency-hopping subbands, and the second frequency-hopping subband is any one of the other frequency-hopping subbands besides the first frequency-hopping subband. Therefore, the first frequency-hopping subband and the second frequency-hopping subband are different.

[0307] 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 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.

[0308] It should also be understood that the first parameter is used to determine the specific method of the first-level frequency hopping pattern, which can be referred to above. Figure 3 and Figure 4This relates to determining the specific location of the frequency domain resources for transmitting SRS. For example, the first-level frequency hopping pattern can be viewed as described above. Figure 4 The resource location of the frequency domain bandwidth corresponding to any one of the four consecutive time-domain symbols shown (e.g., Figure 4 One time-domain symbol corresponds to the frequency-domain resource location of the four black squares.

[0309] 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 for transmitting SRS in the first-level frequency hopping pattern, the frequency domain bandwidth X1, or the frequency domain starting position of the Nth transmission of the reference signal in the first-level frequency hopping pattern.

[0310] Here, N is the number of times SRS is sent within the same group.

[0311] It should be understood that the N SRS transmissions within the same group can also be interpreted as: N consecutively transmitted SRS transmissions grouped together. N is an integer greater than or equal to 1.

[0312] 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.

[0313] It should also be understood that the value of N can be predefined by the system / protocol, or determined based on frequency domain bandwidth X1 and frequency domain bandwidth X2, or determined based on frequency domain bandwidth X1, frequency domain bandwidth X2, and frequency domain repetition factor R. For details on how the terminal device determines the value of N, please refer to the detailed explanation in step 602, which will not be repeated here.

[0314] The counting rule of the transmission counter for the first-level frequency hopping pattern transmission SRS is used to determine the current transmission count of the SRS.

[0315] It should be understood that this transmission counter is based on the value of N. n f , T offset T SRS It is determined by one or more of l' and R. n represents the number of time slots within a system frame. f Indicates the system frame number. T represents the slot number within a system frame. offset T represents the time slot offset value. SRS The time slot period is represented by l′, the symbol number is represented by l′, and the symbol repetition factor is represented by R.

[0316] It should be understood that the transmission counter can determine the current SRS transmission count using one or more of the following methods:

[0317] Method 1: Count the transmission of each SRS independently. The transmission counter for this SRS is set to a value of n. SRS The following formula can be satisfied:

[0318]

[0319] Method 2: Combine multiple SRS transmissions for joint counting. This involves grouping consecutively transmitted SRSs together, with each group corresponding to the same SRS transmission count. The corresponding transmission counter takes the value n. SRS The following formula can be satisfied:

[0320]

[0321] Method 3: Jointly count multiple SRS transmissions, that is, group multiple SRSs with consecutive transmission counts together, and the SRSs in the same group correspond to the transmission count of the same SRS. The count value corresponding to this transmission counter is n. SRS The following formula can be satisfied:

[0322]

[0323] The frequency domain bandwidth X1 of each SRS transmission group can be determined according to m. SRS,b , K TC P F At least one of N is determined.

[0324] For example, the frequency domain bandwidth X1 of each SRS transmission can be determined using one or more of the following methods to determine the pilot sequence for SRS transmission:

[0325] Method 4: Based on parameter B SRS C SRS The value of X1 is determined by referring to Table 3 above to determine the frequency domain bandwidth X1 = M for each group of SRS transmissions. SRS The length of the pilot sequence transmitted in a single SRS transmission satisfy:

[0326]

[0327] Method 5: Based on parameter B SRS C SRS The value of N is determined by referring to Table 3 above to determine the frequency domain bandwidth X1 = N*M for each SRS transmission group. SRS The length of the pilot sequence transmitted in a single SRS transmission satisfy:

[0328]

[0329] Method 6: Based on parameter B SRS C SRS The values ​​of and N are used to determine the frequency domain bandwidth M = N * M for each SRS transmission group, referring to Table 3 above. SRS Then, the pilot sequences transmitted by all or part of the SRS within each group are jointly designed. For example, the length of the pilot sequence for N transmissions of the SRS within each group. The following formula can be satisfied:

[0330]

[0331] The frequency domain start position of each SRS transmission group can be used to determine the frequency domain start position of that SRS transmission group.

[0332] It should be understood that the starting position of this frequency domain is related to the SRS transmission count. Assuming that multiple SRS transmissions within the same group are counted together, that is, multiple SRS transmissions within the same group correspond to the same SRS transmission count, then the multiple SRS transmissions within the same group occupy the same starting position of the frequency domain, but different frequency domain offset positions.

[0333] As another example, the first parameter is used to determine the second-level frequency hopping pattern.

[0334] It should be understood that the second-level frequency hopping pattern can be interpreted 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, where 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 SRS transmission, and the first-level frequency hopping pattern corresponds to the frequency-domain bandwidth X1 of multiple (e.g., x) SRS transmissions.

[0335] It should also be understood that the frequency domain start 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 configured bandwidth (e.g., X2) for transmitting SRS in the second-level frequency hopping pattern; the transmission comb is used to determine the number of subcarriers occupied by the frequency domain resource for a single transmission of SRS in the second-level frequency hopping pattern; the comb offset value is used to determine the specific position of the frequency domain resource for a single transmission of SRS in the second-level frequency hopping pattern; the frequency hopping pattern index corresponds one-to-one with the second-level frequency hopping pattern, and the frequency hopping pattern index is used to determine the specific position of the frequency domain resource for a single transmission of SRS in the second-level frequency hopping pattern.

[0336] For example, this first parameter can be used to determine the second-level frequency hopping pattern. The following will exemplarily illustrate how to determine the specific location of the frequency domain resources for a single SRS transmission in the second-level frequency hopping pattern based on the first parameter:

[0337] With C SRS =63,b hop =0, B SRS Taking a value of 1 as an example, the total SRS transmission bandwidth is 272 RB, which is achieved using frequency hopping. For instance, one or more of the following methods can be used to transmit SRS using frequency hopping:

[0338] Method 7: Level 1 frequency hopping.

[0339] See Figure 7 Assuming each symbol of SRS transmission occupies 16 RBs, and 17 frequency hopping transmissions are used to complete the SRS transmission with a bandwidth of 272 RBs. Figure 7 As shown, the frequency domain location index of the transmitted SRS (or can be understood as the first frequency domain location index n) b1 The values ​​are {0, 8, 16, 7, 15, 6, 14, 5, 13, 4, 12, 3, 11, 2, 10, 1, 9}, which completes the SRS transmission with a bandwidth of 272RB through 17 frequency hopping transmissions.

[0340] Method 8: Two-level frequency hopping.

[0341] Specifically, a second-level frequency domain location index n is introduced for each SRS transmission. b2 .

[0342] Assume that the bandwidth occupied by a single SRS transmission is equal to that based on parameter m. SRS,b In the case of the bandwidth determined by querying Table 3:

[0343] N adjacent SRS transmissions are grouped into the same group, with multiple SRS transmissions within the same group occupying adjacent frequency domain resources. The transmission counter for multiple SRS transmissions within the same group counts only once. A new SRS transmission counting method is defined to achieve joint counting of multiple SRS transmissions. Specifically, multiple SRS transmissions with consecutive transmission counts are grouped into the same group, and multiple SRS transmissions within the same group correspond to the same SRS count. The count value in this transmission counter is n. SRS It can be based on the value of N. n f , T offset T SRS One or more of l' and R are determined, for example, n SRS It can satisfy:

[0344] or

[0345]

[0346] 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., N) SRS can be transmitted. The index of this first-level frequency domain location is n. b1 According to n RRC m SRS,b n SRS And at least one of bhop is determined, for example, the n b It can satisfy:

[0347]

[0348] 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 Used to determine a second frequency domain position, which is within the range of a first frequency domain position, and the second frequency domain position is used to indicate the frequency domain position of each transmitted reference signal in the same group of N transmitted reference signals.

[0349] 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.

[0350] Assume that in the first-level frequency hopping pattern, four SRSs are transmitted within the same group, i.e., N=4. The four transmitted SRSs occupy four frequency domain resource positions, as shown in Figure 4:

[0351] Table 4

[0352]

[0353]

[0354] For example, the second-level frequency hopping pattern index "0" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission within each group. b2 They are {0, 1, 2, 3} respectively; the second-level frequency hopping pattern index "1" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission in each group. b2The indices are {1, 2, 3, 0}; the second-level frequency hopping pattern index "2" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission within each group. b2 The indices are {2, 3, 0, 1}; the second-level frequency hopping pattern index "3" is used to indicate the second-level frequency domain position index n occupied by the SRS transmission within each group. b2 They are {3, 0, 1, 2}, etc.

[0355] It should be understood that the terminal device can be based on the first-level frequency domain location index n b1 Second-level frequency domain position index n b2 Determine the i-th (i=n) SRS The frequency domain resource location n occupied by the j-th SRS transmission in group ) b (i,j), the n b (i,j) can be determined according to n b1 N and n b2 At least one of them is determined, for example, n b (i,j) satisfies:

[0356] n b (i,j)=n b1 *N+n b2

[0357] Where, n b2 The specific size can be determined by referring to Table 4.

[0358] See Figure 8 Assuming each symbol of SRS transmission occupies 16 RBs, and 20 = (17 mod 4) * 4 frequency hopping operations are used to complete the 272 RB bandwidth of SRS transmission, dividing each 16 RB into a sub-band, and the 272 RBs into 17 sub-bands, the first-level frequency domain position index n b1 They are {0,0,0,0,3,3,3,3,1,1,1,1,1,4,4,4,4,2,2,2,2}, and the second-level frequency domain position index n b2 The frequencies are {0, 1, 2, 3}, and the frequency domain resource positions for each SRS transmission are determined as {0, 1, 2, 3, 12, 13, 14, 15, 4, 5, 6, 7, 16, 0, 1, 2, 8, 9, 10, 11}.

[0359] It should be understood that this method eight refers to the first-level frequency domain location index n. b1 , will m SRS,b *N (16*4=64) RBs are divided into a frequency domain block. Each frequency domain block is numbered sequentially from low to high frequency, corresponding to a first-level frequency domain position index, n. b1 When = 0, the corresponding frequency domain block is {frequency domain sub-band 0 to frequency domain sub-band 3}, and the first-level frequency domain position index nb1 When m = 1, the corresponding frequency domain block is {frequency domain sub-band 4 to frequency domain sub-band 7}, and so on; for the second-level frequency domain position index, m within each of the above frequency domain blocks is... SRS,b (16) RBs are divided into a sub-frequency domain block. Each sub-frequency domain block is numbered sequentially from low to high frequency, corresponding to a second-level frequency domain position index, n. b2 =0 corresponds to the first sub-frequency block within the frequency domain block, and the second-level frequency domain position index n b2 =1 corresponds to the second sub-frequency block within the frequency domain block, and so on.

[0360] Method 9: Two-level frequency hopping.

[0361] A secondary frequency domain location index is introduced for each SRS transmission.

[0362] Assume that the bandwidth occupied by a single SRS transmission is less than that based on parameter m. SRS,b In the case of the bandwidth determined by querying Table 3:

[0363] N adjacent SRS transmissions are grouped into the same group, with multiple SRS transmissions within the same group occupying adjacent frequency domain resources. The transmission counter for multiple SRS transmissions within the same group counts only once. A new SRS transmission counting method is defined to achieve joint counting of multiple SRS transmissions. Specifically, multiple SRS transmissions with consecutive transmission counts are grouped into the same group, and multiple SRS transmissions within the same group correspond to the same SRS count. The count value in this transmission counter is n. SRS It can be based on the value of N. n f , T offset T SRS One or more of l' and R are determined, for example, n SRS It can satisfy:

[0364] or

[0365]

[0366] 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 above... Figure 3 and Figure 4 The protocol involved in n b1 Define nb1 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:

[0367]

[0368] 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.

[0369] 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.

[0370] It should be understood that the terminal device can be based on the first-level frequency domain location index n b1 Second-level frequency domain position index n b2 Determine the i-th (i=n) SRS The frequency domain resource location n occupied by the j-th SRS transmission in group ) b (i,j), the n b (i,j) can be determined according to n RRC m SRS,b F b (n SRS ), N, n b2 , and N b At least one of them is determined, for example, n b (i,j) can satisfy:

[0371]

[0372] Where, n b2 The specific size can be determined by referring to Table 4.

[0373] It should also be understood that the first-level frequency domain location index n of multiple SRS transmissions within the same group b1 Same, second-level frequency domain position index n b2 different.

[0374] Among them, the length of the frequency domain pilot sequence of a single SRS transmission within the same group It can satisfy:

[0375]

[0376] See Figure 9 Assuming each symbol of SRS transmission occupies 4 RBs, and 17*4 frequency hopping is used to complete the 272 RB bandwidth SRS transmission, the first-level frequency domain position index n of the SRS transmission is... b1 They are {0, 8, 16, 7, 15, 6, 14, 5, 13, 4, 12, 3, 11, 2, 10, 1, 9}, and the second-level frequency domain position index n b2 The indices are {0, 1, 2, 3}. Each 4RB is divided into a sub-band, and 272RBs are divided into 68 sub-bands. The frequency domain position indices after secondary combining for each SRS transmission are {0, 1, 2, 3, 32, 33, 34, 35, 64, 65, 66, 67…, 36, 37, 38, 39}.

[0377] It should be understood that this method nine refers to the first-level frequency domain position index n. b1 , will m SRS,b (16) RBs are divided into a frequency domain block. Each frequency domain block is numbered sequentially from low to high frequency, corresponding to a first-level frequency domain position index, n. b1 When = 0, the corresponding frequency domain block is {frequency domain sub-band 0}, and the first-level frequency domain position index is n. b1 When = 1, the corresponding frequency domain block is {frequency domain subband 1}, and so on; for the second-level frequency domain position index n b2 Within each of the above frequency domain blocks Each RB is divided into a sub-frequency domain block, and each sub-frequency domain block is numbered sequentially from low to high frequency, corresponding to a second-level frequency domain position index n. b2 Second-level frequency domain position index n b2 =0 corresponds to the first sub-frequency block within the frequency domain block, and the second-level frequency domain position index n b2 =1 corresponds to the second sub-frequency block within the frequency domain block, and so on.

[0378] Based on the above detailed description of the first parameter used to determine at least one of the first-level frequency hopping pattern and the second-level frequency hopping pattern, the following will combine... Figures 10-11 The possible pattern designs of the first-level frequency hopping pattern and the second-level frequency hopping pattern are illustrated by way of example.

[0379] See Figure 10 , Figure 10This is a schematic diagram of a first-level frequency hopping pattern and a second-level frequency hopping pattern determined based on the aforementioned method for determining the position of frequency domain resources in the first and second frequency hopping patterns. Specifically, the position of the frequency domain resources of the first-level frequency hopping pattern across the two time slots is a discontinuous bandwidth, while the combined position of the frequency domain resources of the second-level frequency hopping pattern on different symbols within any one of the two time slots constitutes a continuous bandwidth.

[0380] like Figure 10 As shown in (1), assuming the bandwidth corresponding to the first-level frequency hopping pattern is divided into N parts (e.g., N=4), and the repetition factor R=1, SRS is transmitted on four symbols within the same time slot, occupying different frequency domain resources. The transmission of four SRS within the same time slot completes the transmission of multiple SRS 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 four transmitted SRS.

[0381] like Figure 10 As shown in (2), assuming the bandwidth corresponding to the first-level frequency hopping pattern is divided into N parts (e.g., N=2), and the repetition factor R=2, SRS is transmitted on two symbols within the same time slot using different frequency domain resources, and SRS is transmitted on two symbols using the same frequency domain resources. The transmission of four SRS within the same time slot completes the transmission of multiple SRS 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 four transmitted SRS.

[0382] As can be seen, during the SRS transmission process, SRS transmission is completed according to the second-level frequency hopping pattern within the same time slot, and according to the first-level frequency hopping pattern between different time slots. Optionally, the above four SRS transmissions can also be four symbols in adjacent time slots, which will not be listed in this application.

[0383] See Figure 11 , Figure 11 This is a schematic diagram of a second-level frequency hopping pattern. Assuming the bandwidth corresponding to the first-level frequency hopping pattern is 16 RB and the bandwidth corresponding to the second-level frequency hopping pattern is 4 RB, the specific frequency domain resource locations of this second-level frequency hopping pattern within the same time slot are shown below. Figure 11 Any one of them.

[0384] Combination Figure 11 As shown in (1), in the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB1, RB2, RB3, and RB4, respectively; combined with Figure 11 As shown in (2), in the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB2, RB3, RB4, and RB1, respectively; combined with Figure 11 As shown in (3), according to the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB3, RB4, RB1, and RB2, respectively; combined with Figure 11 As shown in (4), in the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB4, RB1, RB2, and RB3, respectively; combined with Figure 11 As shown in (5), in the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB2, RB4, RB1, and RB3, respectively; combined with Figure 11 As shown in (6), in the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB1, RB3, RB2, and RB4, respectively; combined with Figure 11 As shown in (7), in the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB3, RB1, RB4, and RB2, respectively; combined with Figure 11 As shown in (8), in the time domain order, the frequency domain resources of the second-level frequency hopping pattern for a single transmission of SRS in the same time slot are RB4, RB2, RB3, and RB1, respectively.

[0385] It should be understood that Figure 11 The diagram only shows a schematic of multiple SRS transmissions within the same time slot on different symbols. Of course, multiple SRS transmissions can be on different symbols within the same time slot or OFDM symbols in different time slots. This application does not limit this.

[0386] It should also be understood that the configuration information in step 601 may include one or more SRS resource sets, which are used to allocate resources for SRS transmission. An SRS resource set contains one or more SRS resources, which include time-domain or frequency-domain resources for SRS signal transmission. An SRS resource contains one or more antenna ports used for SRS signal transmission. Alternatively, an SRS resource set can be understood as indicating one or more time-frequency domain resources and one or more antenna ports for SRS transmission.

[0387] In one possible implementation, an SRS resource set includes a 'usage' indication that describes the purpose of the SRS resource set, specifically antenna switching, codebook, non-codebook, or beam management.

[0388] For example, network devices can obtain the channel state information (CSI) of the downlink, which is reciprocal between the uplink and downlink channels, by receiving and measuring the SRS signals corresponding to the SRS resource set used for antenna switching.

[0389] For example, network devices can obtain uplink channel state information (CSI) by receiving and measuring the SRS signals corresponding to the SRS resource set used as a codebook. That is, when the uplink precoding method used by the terminal device is codebook, the network device obtains the uplink transmission precoding matrix indicator (TPMI) by receiving and measuring the SRS signals, and uses the TPMI and the SRS resource index (SRI) to indicate the transmission precoding used by the uplink for the terminal device.

[0390] For example, network devices can obtain uplink channel state information (CSI) by receiving and measuring the SRS signals corresponding to the SRS resource set used for non-codebook purposes. That is, when the precoding method used by the terminal device for the uplink is non-codebook, the network device obtains the uplink transmission precoding weights by receiving and measuring the SRS signals, and indicates the transmission precoding used by the uplink for the terminal device through the SRS resource index (SRI).

[0391] For example, network devices can select transmit and receive beams for uplink and downlink transmission of terminal devices by receiving and measuring the SRS signals corresponding to the SRS resource set used for beam management.

[0392] It should be understood that the aforementioned SRS resource set can be configured as periodic, semi-static, or aperiodic. For periodic or semi-static SRS resources, periodic SRS resources are configured using configuration messages indicating the period and slot offset of the SRS resources. Semi-static SRS resources can be dynamically activated and deactivated via DCI signaling and / or MAC-CE signaling.

[0393] It should also be understood that there is a mapping relationship between SRS ports (also known as antenna ports) and SRS time-frequency domain resources. That is, the SRS information configuration instructs a specific SRS port to transmit SRS on a specific SRS time-frequency domain resource. SRS time-domain resources can span N adjacent symbols within a time slot, or occupy multiple symbols in different time slots.

[0394] 602. The network device sends an instruction to the terminal device, and the terminal device receives the instruction from the network device accordingly.

[0395] It should be understood that the indication information is used to instruct the frequency hopping pattern of the transmission reference signal to be updated (or switched), or it can be understood that the indication information is used by the terminal device to dynamically switch or dynamically update the frequency domain resources of the transmission reference signal, which include one or more of the following: the location of the frequency domain resources of the transmission reference signal, the number of frequency domain resources of the transmission reference signal, or the order of the frequency domain resources of the transmission reference signal.

[0396] It should also be understood that the indication information may indicate that the frequency hopping pattern of the updated transmission reference signal includes a first-level frequency hopping pattern and / or a second-level frequency hopping pattern. For a detailed description of the first-level and second-level frequency hopping patterns, please refer to the detailed description in step 601 above.

[0397] In one possible implementation, the indication information includes one or more of the following: transmission comb, comb offset value, frequency hopping parameters, frequency hopping pattern index, frequency domain start position, or frequency domain offset value.

[0398] It should be understood that one or more of the transmission comb, comb offset value, frequency hopping parameter, frequency hopping pattern index, frequency domain start position, or frequency domain offset value are used by the terminal device to update the frequency hopping pattern (e.g., 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, comb offset value, frequency hopping parameter, frequency hopping pattern index, frequency domain start position, or frequency domain offset value are used by the terminal device to update the frequency domain resources of the transmission reference signal and determine the updated frequency domain resources.

[0399] It should be understood that this application uses the example of instructing a terminal device to update the second-level frequency hopping pattern as an example for illustrative purposes. Instructing the terminal device to update the first-level frequency hopping pattern, or updating both the first and second-level frequency hopping patterns, is similar to updating the second-level frequency hopping pattern, and will not be described in detail here.

[0400] It should also be understood that the first-level frequency hopping pattern in the following examples is illustrated using pattern #1 as an example. The frequency domain bandwidth corresponding to pattern #1 is X1. The specific frequency domain location of pattern #1 is not limited in this application. For example, pattern #1 can be a specific example of the first-level frequency hopping pattern in step 601 above (e.g. Figure 10The first-level frequency hopping pattern shown is illustrated below. The second-level frequency hopping patterns in the following examples are illustrated using patterns #1-0, #1-1, #1-4, and #1-5. The frequency domain bandwidth corresponding to these patterns is X2. The specific frequency domain positions of these patterns are not limited in this application. For example, pattern #1-0 can be the second-level frequency hopping pattern corresponding to frequency hopping pattern index 0 in Table 4 above; pattern #1-1 can be the second-level frequency hopping pattern corresponding to frequency hopping pattern index 1 in Table 4 above; pattern #1-4 can be the second-level frequency hopping pattern corresponding to frequency hopping pattern index 4 in Table 4 above; and pattern #1-5 can be the second-level frequency hopping pattern corresponding to frequency hopping pattern index 5 in Table 4 above.

[0401] As an example, the indication information includes a transmission comb (e.g., transmissionComb) used to update the number of frequency domain subcarriers occupied by the transmitted reference signal in the frequency hopping pattern, the position of the frequency domain subcarriers, and the length of the reference signal transmission sequence.

[0402] For example, after receiving the indication information, the terminal device updates the number of frequency domain subcarriers occupied by the transmitted reference signal, the position of the frequency domain subcarriers, and the length of the reference signal transmission sequence based on the transmission comb in the indication information.

[0403] Assume the terminal device determines the first-level frequency hopping pattern as pattern #1 and the second-level frequency hopping pattern as pattern #1-1 based on the configuration information, where the frequency domain bandwidth corresponding to pattern #1-1 is X2 and the transmission comb is 2 (i.e., K). TC =2), the terminal equipment occupies 6 frequency domain subcarriers in each RB within the frequency domain bandwidth X2 for transmitting reference signals, 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 a transmission comb, which is 3 (i.e., K). TC =3), the number of frequency subcarriers of each RB within the frequency domain bandwidth X2 occupied by the terminal equipment for transmitting reference signals is updated to 4, and the position of the frequency subcarriers of each RB within the frequency domain bandwidth X2 is updated to the 1st, 4th, 7th, and 10th subcarriers.

[0404] It should be understood that the terminal device can determine the length of the transmission sequence of the reference signal using any of the methods four to six shown in step 601 above. For example: the terminal device determines the second-level frequency hopping pattern as pattern #1-1 based on the configuration information, and the transmission comb is 2, i.e., K. TC =2, terminal devices are based on K TC =2, and the length of the reference signal transmission sequence is determined using the above method four. This indication information includes a transmission number of 3, i.e., K.TC =2, this terminal device can be based on K TC =3, and the length of the updated reference signal transmission sequence is determined using the above method four.

[0405] In one exemplary scenario, when the indication information includes a field indicating the transmission comb used in the frequency hopping pattern for transmitting the reference signal, the number of bits occupied by this field is related to the maximum configurable value of the transmission comb. For example, when the maximum configurable value of the transmission comb is 8, this field can occupy 3 bits, where a field value of 0 indicates transmission comb 0; a field value of 1 indicates transmission comb 1; a field value of 2 indicates transmission comb 2; and a field value of 8 indicates transmission comb 8. The number of bits occupied by this field can also be adjusted when the maximum configurable value of the transmission comb changes.

[0406] In another example scenario, when the indication information includes a field indicating the transmission comb, the number of bits occupied by this field is related to the size of the set of configurable values ​​for the transmission comb. For example, if the set of possible transmission comb values ​​is {2, 4, 8}, this field occupies 2 bits. A value of 0 in this field indicates that the frequency hopping pattern of the reference signal is transmitted using transmission comb 2; a value of 1 indicates that the frequency hopping pattern of the reference signal is transmitted using transmission comb 4; a value of 2 indicates that the frequency hopping pattern of the reference signal is transmitted using transmission comb 8; and a value other than {2, 4, 8} is invalid. The number of bits occupied by this field can be adjusted accordingly if the set of possible values ​​changes.

[0407] As an example, the indication information includes a comb offset value (e.g., combOffset) used to update the frequency domain subcarrier position occupied by the transmitted reference signal.

[0408] For example, after receiving the indication information, the terminal device updates the frequency domain subcarrier position occupied by the transmitted reference signal based on the comb offset value in the indication information.

[0409] Assume that the terminal device determines the first-level frequency hopping pattern as pattern #1 and the second-level frequency hopping pattern as pattern #1-1 based on the configuration information. Pattern #1-1 corresponds to a frequency domain bandwidth of X2, a transmission comb of 2, and a comb offset of 0. The terminal device occupies 6 frequency domain subcarriers per RB within the frequency domain bandwidth X2 for transmitting the reference signal, and the positions of the frequency domain subcarriers per RB within the frequency domain bandwidth X2 are the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers. The indication information includes a comb offset value of 1. The terminal device occupies 6 frequency domain subcarriers per RB within the frequency domain bandwidth X2 for transmitting the reference signal, and the positions of the frequency domain subcarriers per RB within the frequency domain bandwidth X2 are updated to the 2nd, 4th, 6th, 8th, 10th, and 12th subcarriers.

[0410] In one exemplary scenario, when the indication information includes a field indicating the comb offset value used in the frequency hopping pattern of the transmitted reference signal, the number of bits occupied by this 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, so the comb offset can be {0, 1}, and this 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, so the comb offset can be {0, 1, 2, 3}, and this field can occupy 2 bits, and so on.

[0411] As an example, the indication information includes frequency hopping parameters. The terminal device determines a new frequency hopping pattern based on the frequency hopping parameters included in the indication information, and determines the frequency domain position of the transmitted reference signal based on the new frequency hopping pattern.

[0412] It should be understood that the relevant introduction on how the terminal device determines the frequency hopping pattern based on the frequency hopping parameters can be found in the detailed description of step 601 above, and will not be repeated here.

[0413] As an example, the indication information includes a frequency hopping pattern index, which corresponds one-to-one with the updated frequency hopping pattern. This frequency hopping pattern index is used to update the order of multiple frequency domain subbands occupied by consecutively transmitted reference signals.

[0414] For example, after receiving the indication information, the terminal device updates the order of multiple frequency domain subbands occupied by the reference signals that are transmitted multiple times consecutively based on the frequency hopping pattern index in the indication information.

[0415] Assume that the terminal device determines the first-level frequency hopping pattern as pattern #1 and the second-level frequency hopping pattern as pattern #1-1 based on the configuration information. The index corresponding to pattern #1-1 is frequency hopping pattern index 1 in Table 4 above, and the second frequency domain position index is {1,2,3,0}. The indication information includes the frequency hopping pattern index, and this index is 3. The terminal device can determine the updated second frequency domain position index as {3,0,1,2} based on Table 4, and send a reference signal based on the updated second frequency domain position index {3,0,1,2}.

[0416] In one exemplary scenario, when the indication information includes a field indicating the frequency hopping pattern index for transmitting the reference signal, the number of bits occupied by this field is related to the number of frequency hopping patterns indicated by the terminal device. For example, the protocol / system predefines multiple frequency hopping patterns, and this frequency hopping pattern index is used to indicate one such pattern to the terminal device. Accordingly, the terminal device determines the order of multiple frequency domain subbands for transmitting the reference signal according to the frequency hopping pattern corresponding to the frequency hopping pattern index indicated by the indication information.

[0417] As an example, the indication information includes a frequency domain start position and / or a frequency domain offset value, the frequency domain start position corresponding one-to-one with the updated frequency hopping pattern, and the frequency domain offset value corresponding one-to-one with the updated frequency hopping pattern. The frequency domain start position and / or frequency domain offset value are used to update the order of multiple frequency domain subbands occupied by multiple consecutively transmitted reference signals.

[0418] For example, after receiving the indication information, the terminal device updates the order of multiple frequency sub-bands occupied by multiple consecutively transmitted reference signals, or the order of multiple RBs transmitting multiple reference signals within the same frequency sub-band, based on the frequency domain start position and / or frequency domain offset value in the indication information.

[0419] Suppose that the terminal device determines the first-level frequency hopping pattern as pattern #1 and the second-level frequency hopping pattern as pattern #1-1 based on the configuration information. Pattern #1-1 corresponds to a frequency domain bandwidth of X2, and X2 contains 4 RBs. The frequency domain positions occupied by multiple reference signal transmissions are in the order of RB#1, RB#2, RB#3, and RB#0, respectively. The indication information includes the frequency domain start position, which represents the frequency domain start position of the second-level frequency hopping pattern. If the frequency domain start position indicated by the indication information is RB#0, it can be said that the frequency domain start position of the second-level frequency hopping pattern is RB#0. At this time, the corresponding frequency hopping pattern is #1-0, that is, the frequency domain position order occupied by multiple reference signal transmissions is updated to RB#0, RB#1, RB#2, and RB#3, respectively.

[0420] Optionally, the frequency hopping pattern corresponding to the frequency domain start position indicated by the indication information is related to the frequency hopping pattern currently used by the terminal device; or it can be understood that the frequency domain start position indicated by the indication information changes the frequency domain start position of multiple reference signal transmissions within the same group, but does not change the frequency domain spacing relationship of the multiple reference signal transmissions. For example, if the second-level frequency hopping pattern currently used by the terminal device is pattern #1-0, meaning the frequency domain start position occupied by multiple reference signal transmissions is RB#0, and the frequency domain position order of these multiple reference signal transmissions is RB#0, RB#1, RB#2, and RB#3 respectively, and the frequency domain start position indicated by the indication information is RB#1, then the frequency hopping pattern corresponding to this frequency domain start position RB#1 is pattern #1-1, meaning the frequency domain start position occupied by multiple reference signal transmissions is updated to RB#1, and the frequency domain position order of these multiple reference signal transmissions is updated to RB#1, RB#2, RB#3, and RB#0. As can be seen, the frequency domain spacing of the frequency hopping patterns (patterns #1-0 and #1-1) for multiple reference signal transmissions is the same before and after the update, and this indication information does not change the frequency domain spacing of the multiple reference signal transmissions. Furthermore, assuming that the terminal device currently uses pattern #1-5 as the second-level frequency hopping pattern, meaning the starting position of the frequency domain occupied by the multiple reference signal transmissions is RB#0, and the order of the frequency domain positions of these multiple reference signal transmissions is RB#0, RB#2, RB#1, and RB#3 respectively, when the frequency domain starting position indicated by the indication information is RB#1, the frequency hopping pattern corresponding to this starting position RB#1 is pattern #1-4. That is, the starting position of the frequency domain occupied by the multiple reference signal transmissions is updated to RB#1, and the order of the frequency domain positions of these multiple reference signal transmissions is updated to RB#1, RB#3, RB#0, and RB#2. Again, the frequency domain spacing of the frequency hopping patterns (patterns #1-5 and #1-4) for multiple reference signal transmissions is the same before and after the update, and this indication information does not change the frequency domain spacing of the multiple reference signal transmissions.

[0421] Furthermore, suppose that the terminal device determines the first-level frequency hopping pattern as pattern #1 and the second-level frequency hopping pattern as pattern #1-1 based on the configuration information, where 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 based on the frequency domain offset value 0, that is, the frequency domain position order occupied by multiple reference signal transmissions is updated to RB#0, RB#1, RB#2 and RB#3 respectively.

[0422] Optionally, the frequency hopping pattern corresponding to the frequency offset value indicated by the indication information is related to the frequency hopping pattern currently used by the terminal device; or it can be understood that the frequency offset value indicated by the indication information changes the starting position of the frequency domain of multiple reference signal transmissions within the same group, but does not change the frequency domain spacing relationship of the multiple reference signal transmissions. For example, if the second-level frequency hopping pattern currently used by the terminal device is pattern #1-0, meaning the frequency domain positions occupied by multiple reference signal transmissions are in the order RB#0, RB#1, RB#2, and RB#3 respectively, and the frequency offset value indicated by the indication information is 1, the corresponding frequency hopping pattern is pattern #1-1, meaning the frequency domain positions occupied by multiple reference signal transmissions are updated to RB#1, RB#2, RB#3, and RB#0 respectively. As can be seen, the frequency domain spacing of the frequency hopping patterns (patterns #1-0 and #1-1) for multiple reference signal transmissions is the same before and after the update, and this indication information does not change the frequency domain spacing of the multiple reference signal transmissions. Assuming the terminal device currently uses pattern #1-5 as the second-level frequency hopping pattern, meaning the frequency domain positions occupied by the multiple reference signal transmissions are in the order RB#0, RB#2, RB#1, and RB#3 respectively, when the frequency domain offset value indicated by the indication information is 1, the corresponding frequency hopping pattern is pattern #1-4, meaning the frequency domain positions occupied by the multiple reference signal transmissions are updated to RB#1, RB#3, RB#0, and RB#2 respectively. Again, the frequency domain spacing of the frequency hopping patterns (patterns #1-5 and #1-4) for multiple reference signal transmissions is the same before and after the update, and this indication information does not change the frequency domain spacing of the multiple reference signal transmissions.

[0423] In one exemplary scenario, when the indication information indicates a frequency domain position and / or a frequency domain offset value, 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 multiple frequency domain sub-bands for transmitting reference signals according to the frequency domain position and / or frequency domain offset value indicated by the indication information, and in accordance with the frequency hopping pattern corresponding to that frequency domain position and / or frequency domain offset value.

[0424] See Figure 11 As shown in (1) to (4) in the diagram, four different frequency hopping patterns are illustrated as examples. Among them, Figure 11 The frequency domain positions or frequency domain offset values ​​corresponding to the four frequency hopping patterns shown in (1) to (4) can be 0, 1, 2, and 3, respectively. Assuming that the indication information indicates a frequency domain position of 0, the terminal device determines the frequency hopping pattern to be used based on the frequency domain position 0 indicated by the indication information. Figure 11 The frequency hopping pattern shown in (1) includes the sequential transmission of reference signals in multiple frequency domain sub-bands. Assuming that the indication information indicates frequency domain position 1, the terminal device determines the frequency hopping pattern to be used based on frequency domain position 1 indicated by the indication information. Figure 11 The frequency hopping pattern shown in (2) includes the sequential transmission of reference signals in multiple frequency domain sub-bands.

[0425] It should be understood that the indication information may also include the identification information of the serving cell, the identification information of the bandwidth part indicator, the set of reference signal resources, or one or more of the reference signal resources.

[0426] As an example, the indication information also includes the identification information of the serving cell, which is used by the terminal device to determine the serving cell to which the frequency hopping pattern applies.

[0427] In one exemplary scenario, when the indication information includes a field indicating the identifier of the serving cell, the number of bits occupied by this field is related to the maximum number of serving cells that each terminal device can configure. For example, if the protocol constrains the maximum number of serving cells that a terminal device can configure to be 32, then this field can occupy 5 bits. Accordingly, based on the identifier of the serving cell indicated by the indication information, when the terminal device is within the serving cell range indicated by the identifier of the serving cell, it transmits a reference signal using the corresponding frequency hopping pattern.

[0428] As an example, the indication information also includes identification information for the bandwidth portion. When the indication information includes a field indicating the identification of the bandwidth portion, this field represents the identifier of the bandwidth portion used by the frequency hopping pattern. The number of bits occupied by this field is related to the value of the bandwidth part indicator field in the DCI of each terminal device. For example, the current protocol constrains this field to occupy 2 bits.

[0429] As an example, the indication information may also include a reference signal resource set, whereby the field indicating the reference signal resource set used by the frequency hopping pattern (e.g., SRS-ResourceSetId, or SRS-ResourceSet indicator) may be included.

[0430] SRS-ResourceSetId refers to the 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 the terminal device can configure in each bandwidth portion of each cell. For example, assuming the maximum number of SRS resource sets that the terminal device can configure in each bandwidth portion of each cell is 192, this field can occupy 8 bits. A value of 0 indicates a pilot resource set with SRS-ResourceSetId = 0; a value of 1 indicates a pilot resource set with SRS-ResourceSetId = 1. A value of n indicates a pilot resource set with SRS-ResourceSetId = n, and so on. If the maximum number of SRS resource sets that the terminal device can configure in each BWP of each cell is other than this, the number of bits occupied by this field needs to be adjusted accordingly.

[0431] The SRS-ResourceSet indicator is the 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 per BWP for each terminal device. For example, assuming that the maximum number of pilot resources that can be configured per BWP for each terminal device is 8, this field can occupy 3 bits. The value 'n' in this field indicates that the SRS resource set applicable to this SRS frequency hopping pattern corresponds to the (n+1)th ranked SRS resource set within the BWP. If the value of the maximum number of pilot resources that can be configured per BWP for each terminal device changes, the number of bits occupied by this field also needs to be adjusted accordingly.

[0432] As an example, the indication information may also include a reference signal resource, and when the indication information includes a field indicating the reference signal resource used by the frequency hopping pattern (e.g., SRS-ResourceId, or SRS-Resource indicator), the field indicates the reference signal resource used by the frequency hopping pattern.

[0433] SRS-ResourceId refers to the identity of the SRS resource. The number of bits occupied by this field is related to the maximum number of SRS resources that can be configured per cell per BWP of the terminal device. For example, assuming the maximum number of SRS resources that can be configured per cell per BWP of the terminal device is 192, then this field can occupy 8 bits. Here, a value of 0 in this field represents a pilot resource set with srs-ResourceId = 0, a value of 1 represents a pilot resource set with srs-ResourceId = 1, a value of n represents a pilot resource set with srs-ResourceId = n, and so on. If the maximum number of SRS resource sets that can be configured per cell per BWP of the terminal device is other values, then the number of bits occupied by this field also needs to be adjusted accordingly.

[0434] The SRS-Resource indicator refers to the logical index of the 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, then this field can occupy 3 bits. The value 'n' in this field indicates that the SRS resource applicable to this SRS frequency hopping pattern corresponds to the (n+1)th ranked SRS resource 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.

[0435] It should be understood that the configuration information in step 601 and the indication information in step 602 can be transmitted in the same signaling. For example, the configuration information and indication information can be transmitted in one or more of RRC signaling, MAC-CE signaling, or DCI signaling. The configuration information and indication information can be transmitted simultaneously or sequentially in different signaling, and this application does not limit this.

[0436] 603. The terminal device sends a reference signal to the network device, and the network device receives the reference signal from the terminal device accordingly.

[0437] For example, after receiving configuration information from the network device, the terminal device determines the frequency hopping pattern (e.g., first-level frequency hopping pattern, second-level frequency hopping pattern) for transmitting the reference signal based on the configuration information. Before transmitting the reference signal to the network device according to the configuration information, the terminal device receives instruction information from the network device. This instruction information instructs the terminal device to update the frequency hopping pattern for transmitting the reference signal and to transmit the reference signal according to the updated frequency hopping pattern.

[0438] In one possible implementation, the terminal device determines a first-level frequency hopping pattern and a second-level frequency hopping pattern for transmitting a reference signal based on configuration information. The terminal device updates the frequency hopping patterns of the first-level and / or second-level frequency hopping patterns according to indication information, and transmits the reference signal to the network device based on the updated first-level and / or second-level frequency hopping patterns.

[0439] Optionally, after receiving the instruction information from the network device at the first moment, the terminal device may send a reference signal to the network device at the second moment according to the updated frequency hopping pattern. The time interval between the first and second moments is not zero.

[0440] It should be understood that this time interval can be the processing time for the terminal device to determine the updated frequency hopping pattern based on the received indication information. Accordingly, in one possible implementation, after receiving the indication information and determining the updated frequency hopping pattern based on the indication information, the terminal device can also send response / feedback information to the network device, such as ACK feedback or NACK feedback.

[0441] Optionally, the terminal device can jointly design the pilot sequence of N SRS transmitted at the specific locations of the updated first-level frequency hopping pattern and / or second-level frequency hopping pattern, where N is an integer greater than 1.

[0442] The details regarding the specific determination of the first-level frequency hopping pattern and / or the second-level frequency hopping pattern by the terminal device can be found in the relevant description in step 601 above. The details regarding the determination of the updated first-level frequency hopping pattern and / or the second-level frequency hopping pattern by the terminal device based on the instruction information can be found in the relevant description in step 602 above.

[0443] For example, the length of the N SRS sequence transmitted by the terminal device based on the updated first-level frequency hopping pattern and / or second-level frequency hopping pattern is... Should This is related to the total number of frequency domain subcarriers occupied by the N transmitted SRS. Among them, this... It can be represented as:

[0444]

[0445] Where N is the number of times the SRS is sent in the joint sequence design, and m SRS,b This actually specifies the number of RBs that each SRS occupies in the frequency domain, and this m SRS,b According to C sRS and B SRS Configuration. K is the number of subcarriers on each RB. TC P represents the number of combs. F ∈{2,4} High-level parameter frequency domain spread factor.

[0446] It should also be understood that the specific value of N can be determined based on one or more of the following methods:

[0447] Method 10: Obtain the specific value of N from the predefined set of N values ​​in the protocol;

[0448] It should be understood that a terminal device may have one or more sets of values ​​for N predefined by a protocol / system. The terminal device may obtain the specific value of N from these one or more sets of values ​​for N according to certain predefined rules / protocols or signaling information. These sets of values ​​for N include one or more specific values ​​for N.

[0449] It should also be understood that this method can also be interpreted as: the specific value of N is determined based on the predefined set of N values ​​in the protocol.

[0450] Method 11: Determine the specific value of N 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.

[0451] For example, N = X1 / X2.

[0452] 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, which is X1; the updated second-level frequency hopping pattern has the same frequency domain bandwidth as the second-level frequency hopping pattern, which is X2.

[0453] It should also be understood that the terminal device can determine the specific value of N based on the specific values ​​of frequency domain bandwidth X1 and frequency domain bandwidth X2, and based on a certain operation / calculation rule. The specific operation / calculation rule can be determined by the terminal device itself or instructed by other devices, and this application does not limit this.

[0454] It should also be understood that this method 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.

[0455] Method 12: Determine the specific value of X 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.

[0456] For example, N = R * (X1 / X2).

[0457] It should be understood that the terminal device can determine the specific value of N based on the specific values ​​of frequency domain bandwidth X1, frequency domain bandwidth X2, and repetition factor R, and based on a certain operation / calculation rule. The specific operation / calculation rule can be determined by the terminal device itself or instructed by other devices, and this application does not limit its scope.

[0458] It should also be understood that this method 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.

[0459] 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.

[0460] It should be understood that there can be a mapping relationship between the SRS sequence obtained by the joint sequence design of the N SRS transmissions and the SRS of a single transmission.

[0461] Suppose that the N SRS sequences sent by the terminal device can be represented as: The SRS sequence transmitted N times consecutively may have a certain relationship with the location of the frequency domain resources of the N transmitted SRS, or with the value of the transmission counter of the multiple transmitted SRS.

[0462] As an example, in the case of N transmitted SRS sequences, where the frequency domain resources of the transmitted SRSs are adjacent, the specific positions of the transmitted SRS sequences in the joint sequence are adjacent.

[0463] Assuming, The sequence of the (i+1)th SRS transmission = {r n ,r n+1 ,…,r 2n-1}, the sequence of the (i+2)th SRS transmission = {r 2n ,r 2n+1 ,…,r 3n-1 The sequence of the (i+3)th SRS transmission is {r0, r1, ..., r}. n-1}. Where i is an integer, and

[0464] As another example, in the case of N transmitted SRS sequences, if the transmission counter values ​​of the transmitted SRSs are adjacent, the specific positions of the transmitted SRS sequences in the combined sequence are adjacent.

[0465] Suppose that the sequence of the i-th SRS transmission is {r0, r1, ..., r...} n-1}, the sequence of the (i+1)th SRS transmission = {r n ,r n+1 ,…,r 2n-1}, the sequence of the (i+2)th SRS transmission = {r 2n ,r 2n+1 ,…,r 3n-1}, Where i is an integer, and

[0466] 604, Network device performs channel measurement.

[0467] For example, after receiving multiple SRSs from a terminal device, the network device performs channel measurements on the received SRSs. Accordingly, based on the channel measurements performed by the network device on the received SRSs, it can obtain downlink Channel State Information (CSI), uplink CSI information, or transmit / receive beam information.

[0468] Specifically, based on the configuration and indication information in steps 601 and 602, the network device determines the location at the time-frequency domain resource location used for transmitting reference signals to receive multiple SRSs transmitted from the terminal device. Assuming that the transmission sequence of the N SRSs transmitted by the terminal device in step 603 was jointly designed, the network device performs joint channel estimation on the received N SRSs accordingly, thereby improving the channel estimation accuracy of the network device.

[0469] The above Figure 6 This application provides a communication method in which a terminal device updates its frequency hopping pattern based on indication information from a network device. The terminal device then transmits a reference signal based on the updated frequency hopping pattern, thereby achieving dynamic switching of the frequency hopping pattern at the terminal device level, reducing interference between reference signals between cells, and improving the accuracy of channel measurement estimation by the network device based on the reference signal.

[0470] In addition, the subbands of multiple reference signals transmitted by the terminal device are jointly sequenced to further reduce frequency interference between reference signals and improve the channel estimation accuracy of network devices based on reference signals.

[0471] It is understood that in the various embodiments of this application, the interaction between the terminal device and the network device is mainly used as an example for illustrative purposes. This application is not limited to this. The terminal device can be replaced by a receiving device, which can be either a terminal device or a network device. The network device can be replaced by a sending device, which can be either a terminal device or a network device.

[0472] It is also understood that some optional features in the various embodiments of this application may not depend on other features in some scenarios, or may be combined with other features in some scenarios, without limitation.

[0473] It is also understood that the solutions in the various embodiments of this application can be used in reasonable combinations, and the explanations or descriptions of the various terms appearing in the embodiments can be referenced or explained to each other in the various embodiments, without limitation.

[0474] It is also understood that, in the above-described method embodiments, the methods and operations implemented by a device (such as a terminal device or a network device) can also be implemented by components of the device (such as chips or circuits), without limitation.

[0475] The above, combined with Figure 6 The methods provided in the embodiments of this application are described in detail below. Figures 12 to 14 The apparatus provided in the embodiments of this application is described in detail. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments. Therefore, for content not described in detail, please refer to the method embodiments above. For the sake of brevity, it will not be repeated here.

[0476] See Figure 12 , Figure 12 This is a schematic diagram of a communication device 1200 provided in an embodiment of this application. The device 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 communication unit. The device 1200 also 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 channel measurement). The functions of the processing unit 1220 can be implemented by one or more processors. Specifically, the processor may include a modem chip, or a system-on-a-chip (SoC) chip or a system-in-in-package (SIP) chip containing a modem core.

[0477] Optionally, the device 1200 may further include a storage unit, which can be used to store instructions and / or data, and the processing unit 1220 can read the instructions and / or data in the storage unit to enable the device to implement the aforementioned method embodiments.

[0478] Optionally, the transceiver unit 1210 may include a receiving unit and a sending unit. The receiving unit can be used to perform receiving-related operations (such as receiving data or messages), and the sending unit can be used to perform sending-related operations (such as sending data or messages).

[0479] In a first possible design, the device 1200 can be the terminal device in the aforementioned embodiments, which can implement the steps or processes corresponding to those executed by the terminal device in the above method embodiments. Specifically, the transceiver unit 1210 can be used to perform transceiver-related operations of the terminal device in the above method embodiments (such as sending and / or receiving data or messages). For example, the transceiver unit 1210 can be used to perform... Figure 6 Steps 601, 602, and 603 in the illustrated embodiment. Processing unit 1220 can be used to perform processing-related operations of the terminal device in the above method embodiments, or operations other than sending and receiving (such as operations other than sending and / or receiving data or messages). For example, processing unit 1220 can be used to perform... Figure 6 Step 604 in the illustrated embodiment.

[0480] One possible implementation is that the transceiver unit 1210 is used to receive indication information, which indicates that the frequency domain resources of the transmission reference signal should be updated. The frequency domain resources include at least one of the following: the position of the frequency domain resources of the transmission reference signal, the number of frequency domain resources of the transmission reference signal, or the order of the frequency domain resources of the transmission reference signal; and the processing unit 1220 is used to transmit the reference signal through the transceiver unit 1210 according to the indication information and the updated frequency domain resources.

[0481] In a second possible design, the device 1200 can be a network device as described in the foregoing embodiments. This device 1200 can implement the steps or processes performed by the network device corresponding to those described in the method embodiments above. Specifically, the transceiver unit 1210 can be used to perform transceiver-related operations of the network device in the method embodiments above (such as sending and / or receiving data or messages). For example, the transceiver unit 1210 can be used to perform... Figure 6 Steps 601, 602, and 603 in the illustrated embodiment. Processing unit 1220 can be used to perform processing-related operations of the network device in the above method embodiments, or operations other than sending and receiving (such as operations other than sending and / or receiving data or messages). For example, processing unit 1220 can be used to perform... Figure 6 Step 604 in the illustrated embodiment.

[0482] One possible implementation is that the processing unit 1220 is used to determine indication information, the indication information indicating that the frequency domain resources of the transmission reference signal should be updated, the frequency domain resources including at least one of the following: the position of the frequency domain resources of the transmission reference signal, the number of frequency domain resources of the transmission reference signal, or the order of the frequency domain resources of the transmission reference signal; and the transceiver unit 1210 is used to send the indication information.

[0483] It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0484] It should also be understood that the device 1200 here is embodied in the form of a functional unit. The term "unit" here can refer to an application-specific integrated circuit (ASIC), electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the device 1200 can be specifically the communication device in the above embodiments, and can be used to execute the various processes and / or steps corresponding to the communication device in the above method embodiments; to avoid repetition, these will not be described again here.

[0485] The apparatus 1200 of each of the above-described schemes has the function of implementing the corresponding steps performed by the communication device in the above-described 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 above functions; for example, the transceiver unit can be replaced by a transceiver (e.g., 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 processing units, can be replaced by processors, respectively executing the transceiver operations and related processing operations in each method embodiment.

[0486] In addition, the transceiver unit 1210 may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

[0487] It should be pointed out that, Figure 12 The device mentioned can be the communication equipment in the foregoing embodiments, or it can be a chip or a chip system, such as a system on a chip (SoC). The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip. No limitations are imposed here.

[0488] See Figure 13 , Figure 13 This is a schematic diagram of another communication device 1300 provided in an embodiment of this application. The device 1300 includes a processor 1313, which is coupled to a memory 1320. The memory 1320 is used to store computer programs or instructions and / or data. The processor 1313 is used to execute the computer programs or instructions stored in the memory 1320, or to read the data stored in the memory 1320, in order to execute the methods in the above method embodiments.

[0489] Optionally, there may be one or more processors 1313.

[0490] Optionally, the memory 1320 may be one or more.

[0491] Alternatively, the memory 1320 can be integrated with the processor 1313, or it can be set separately.

[0492] Optionally, such as Figure 13 As shown, the device 1300 also includes a transceiver 1330, which is used for receiving and / or transmitting signals. For example, the processor 1313 is used to control the transceiver 1330 to receive and / or transmit signals. The transceiver 1330 can also be divided into a receiver and / or a transmitter, where the receiver is used to receive signals and the transmitter is used to transmit signals. The receiver is used to perform... Figure 6The receiver-related operations shown in the method are performed by the transmitter. Figure 6 The method shown includes send-related operations.

[0493] As an example, processor 1313 may have Figure 12 The processing unit 1220 shown has the function of a storage unit, the memory 1320 can have the function of a storage unit, and the transceiver 1330 can have... Figure 12 The function of the transceiver unit 1210 shown is illustrated.

[0494] As one option, the device 1300 is used to implement the operations performed by the communication device in the various method embodiments described above.

[0495] For example, processor 1313 is used to execute computer programs or instructions stored in memory 1320 to implement the relevant operations of terminal devices or network devices in the various method embodiments described above.

[0496] It should be understood that the processor mentioned in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0497] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory and / or non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0498] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor.

[0499] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0500] See Figure 14 , Figure 14 This is a schematic diagram of a chip system 1400 provided in an embodiment of this application. The chip system 1400 (or may also be referred to as a processing system) includes logic circuitry 1410 and an input / output interface 1420.

[0501] The logic circuit 1410 can be a processing circuit in the chip system 1400. The logic circuit 1410 can be coupled to a memory unit, calling instructions from the memory unit, enabling the chip system 1400 to implement the methods and functions of the embodiments of this application. The input / output interface 1420 can be an input / output circuit in the chip system 1400, outputting processed information from the chip system 1400, or inputting data or signaling information to be processed into the chip system 1400 for processing.

[0502] Optionally, the logic circuit 1410 may be implemented by one or more processors, including the one or more processors or the processing portion of the one or more processors.

[0503] Optionally, the input / output interface 1420 may include transceiver circuitry, a transceiver, input / output circuitry, or a communication interface.

[0504] As one approach, the chip system 1400 is used to implement operations performed by communication devices (such as terminal devices or network devices) in the various method embodiments described above.

[0505] For example, logic circuit 1410 is used to implement processing-related operations performed by a communication device (such as a terminal device or a network device) in the above method embodiments; input / output interface 1420 is used to implement sending and / or receiving-related operations performed by a communication device (such as a terminal device or a network device) in the above method embodiments.

[0506] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by a communication device (such as a terminal device or a network device) in the above-described method embodiments.

[0507] For example, when the computer program is executed by a computer, it enables the computer to implement the methods described in the embodiments of the above methods, which are executed by a communication device (such as a terminal device or a network device).

[0508] This application also provides a computer program product comprising instructions which, when executed by a computer, implement the methods described above as being performed by a communication device (such as a terminal device or a network device).

[0509] This application also provides a communication system, which includes the terminal devices and / or network devices described in the above embodiments. For example, the system includes... Figure 6 Terminal devices and network devices in the process.

[0510] The explanations and beneficial effects of the relevant contents in any of the devices provided above can be found in the corresponding method embodiments provided above, and will not be repeated here.

[0511] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of apparatus or units may be electrical, mechanical, or other forms.

[0512] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially 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 this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer can be a personal computer, a server, or a network device, etc. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks, SSDs). For example, the aforementioned available media include, but are not limited to, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks, and other media capable of storing program code.

[0513] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: Receive instruction information, the instruction information indicating that the frequency domain resources of the transmitted reference signal be updated, the frequency domain resources including at least one of the following: the position of the frequency domain resources for transmitting the reference signal, the number of frequency domain resources for transmitting the reference signal, or the order of the frequency domain resources for transmitting the reference signal; The reference signal is transmitted according to the updated frequency domain resources based on the indicated information.

2. The method according to claim 1, characterized in that, Before receiving the indication information, the method further includes: Receive configuration information, which is used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2. The first frequency domain bandwidth X1 is used to transmit the reference signal N times, and the second frequency domain bandwidth X2 is used to transmit the reference signal once. X1, X2, and N are all integers greater than 1, and X2*N = X1.

3. A communication method, characterized in that, include: Determine indication information, the indication information indicating that the frequency domain resources for transmitting the reference signal be updated, the frequency domain resources including at least one of the following: the location of the frequency domain resources for transmitting the reference signal, the number of frequency domain resources for transmitting the reference signal, or the order of the frequency domain resources for transmitting the reference signal; Send the instruction information.

4. The method according to claim 3, characterized in that, Before sending the indication information, the method further includes: Send configuration information, which is used to determine a first frequency domain bandwidth X1 and a second frequency domain bandwidth X2. The first frequency domain bandwidth X1 is used to transmit the reference signal N times, and the second frequency domain bandwidth X2 is used to transmit the reference signal once. X1, X2, and N are all integers greater than 1, and X2*N = X1.

5. The method according to any one of claims 1 to 4, characterized in that, The instruction information includes one or more of the following: Transmission comb, comb offset value, frequency hopping parameters, frequency hopping pattern index, frequency domain start position, or frequency domain offset value.

6. The method according to claim 5, characterized in that, The indication information includes the transmission comb, which is related to the amount of frequency domain resources used to transmit the reference signal. The transmission comb is used to update one or more of the following: the number of frequency domain subcarriers occupied by the transmission of the reference signal, the position of the frequency domain subcarriers, or the length of the reference signal transmission sequence.

7. The method according to claim 5 or 6, characterized in that, The indication information includes a comb offset value, which is related to the frequency domain resource location for transmitting the reference signal. The comb offset value is used to update the frequency domain subcarrier location occupied by the transmission of the reference signal.

8. The method according to any one of claims 5 to 7, characterized in that, The indication information includes the frequency hopping pattern index, which is related to the frequency domain resource order for transmitting the reference signal. The frequency hopping pattern index is used to update the order of multiple frequency domain subbands occupied by the reference signal when it is transmitted multiple times consecutively.

9. The method according to claim 8, characterized in that, The frequency hopping pattern index includes the index of the first-level frequency hopping pattern and / or the index of the second-level frequency hopping pattern. The first frequency hopping pattern corresponds to the frequency domain bandwidth X1 of transmitting the reference signal N times, and the second frequency hopping pattern corresponds to the frequency domain bandwidth X2 of transmitting the reference signal once. X1, X2, and N are all integers greater than 1, and X2*N = X1.

10. The method according to any one of claims 5 to 9, characterized in that, The indication information includes the frequency domain start position and / or the frequency domain offset value. The frequency domain start position and the frequency domain offset value are related to the order of frequency domain resources for transmitting the reference signal. The frequency domain start position and / or the frequency domain offset value are used to update the order of multiple frequency domain sub-bands occupied by the reference signal when it is transmitted multiple times consecutively.

11. The method according to any one of claims 2, 4 to 10, characterized in that, The configuration information includes one or more of the following: The value of N can be 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.

12. The method according to any one of claims 2, 4 to 11, characterized in that, The value of N is determined based on one or more of the following methods: Method 1: Obtain the value of N from the predefined set of values ​​for N in the protocol; Method 2: Determine the value of N based on the frequency domain bandwidth X1 and the frequency domain bandwidth X2; Method 3: Determine the value of N based on the frequency domain bandwidth X1, the frequency domain bandwidth X2, and the frequency domain repetition factor R.

13. The method according to claim 11 or 12, characterized in that, The counting rule for transmitting the reference signal is to jointly count the N transmitted reference signals. This joint counting means that the N transmitted reference signals correspond to the same value of a transmission counter, where the value of the transmission counter is n. SRS ,satisfy: or in, n represents the number of time slots within a system frame. f Indicates 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.

14. The method according to any one of claims 2, 4 to 13, characterized in that, In frequency domain bandwidth In the case of a single transmission, the length of the pilot sequence corresponding to the reference signal is... satisfy: In frequency domain bandwidth In the case of a single transmission, the length of the pilot sequence corresponding to the reference signal is... satisfy: 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.

15. The method according to any one of claims 2, 4 to 14, characterized in that, 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 ,satisfy: or, Where, n RRC The frequency domain start index of the reference signal is represented by m. SRS,b The m represents the number of frequency domain resource blocks occupied by a single transmission of the reference signal. SRS,b It is determined based on the second frequency domain bandwidth X2, n SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter.

16. The method according to any one of claims 2, 4 to 15, characterized in that, The second frequency domain bandwidth X2 and the second-level frequency domain position index n b2 Correspondingly, the second-level frequency domain position index n b2 Used to determine the frequency domain resource location of a single transmission of the reference signal among N transmissions of the reference signal.

17. The method according to any one of claims 2, 4 to 16, characterized in that, First-level frequency domain position index n b1 and the second-level frequency domain position index n b2 The index n used to determine the frequency domain resource location of the reference signal transmitted in the i-th group for the j-th time. b (i,j), the index n b (i,j) satisfies: n b (i,j)=n b1 *N+n b2 ; or, First-level frequency domain position index n b1 ,satisfy: or, Wherein, the second-level frequency domain position index n b2 The n are used to determine the frequency domain resource location of a single transmission of the reference signal among N transmissions of the reference signal. RRC The frequency domain start index of the reference signal is represented by m. SRS,b n represents the number of frequency domain resource blocks occupied by the reference signal in a single transmission. SRS b represents the value of the transmission counter corresponding to the reference signal. hop This represents the frequency hopping parameter, where the value of i is related to the value of n. SRS The values ​​of are equal, where j represents any one of the N reference signals transmitted within the same group corresponding to i, and n is the first-level frequency domain position index corresponding to the N reference signals transmitted within the same group. b1 Similarly, the second-level frequency domain position index n corresponding to the N reference signals transmitted within the same group. b2 different.

18. The method according to any one of claims 2, 4 to 17, characterized in that, When the frequency domain resources of the reference signals are adjacent, the sequences of the reference signals are adjacent; or, When the transmission counter values ​​between the reference signals are adjacent, the sequences of the uplink reference signals are adjacent.

19. A communication device, characterized in that, Includes modules or units for performing the method according to any one of claims 1 to 18.

20. A communication device, characterized in that, Includes a processor for executing computer programs or instructions to cause the apparatus to perform the method of any one of claims 1 to 18.

21. The apparatus according to claim 20, characterized in that, The device further includes a memory for storing the computer program or instructions; and / or, The device further includes a communication interface coupled to the processor, the communication interface being used for inputting and / or outputting information.

22. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 18.

23. A computer program product, characterized in that, The computer program product includes a computer program or instructions for performing the method as described in any one of claims 1 to 18.

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