Communication method and apparatus

Abstract

The present application provides a communication method and apparatus. The method comprises: acquiring first information, wherein the first information may be used for indicating a parameter related to a first reference signal sequence on a first bandwidth part (BWP), the first BWP belongs to a first frequency domain resource set, the first frequency domain resource set may comprise K first frequency domain resources, correspondingly, the first BWP may comprise P second frequency domain resources, the second frequency domain resources are some or all of the first frequency domain resources, K is a positive integer greater than or equal to 2, and P is a positive integer less than or equal to K; and determining the first reference signal sequence on the basis of the first information. In the present application, a related parameter of a reference signal sequence on a BWP is indicated, to accurately obtain the reference signal sequence, thereby improving communication efficiency in communications on a plurality of frequency domain resources.

Description

Communication methods and devices

[0001] This application claims priority to Chinese Patent Application No. 202411983194.1, filed on December 27, 2024, entitled "Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of wireless communication, and more particularly to communication methods and apparatus. Background Technology

[0003] Currently, operator spectrum is relatively dispersed. Using carrier aggregation (CA) results in a large number of serving cells, leading to poor user experience across all frequency bands, high network power consumption, and high terminal implementation complexity. Each carrier in CA can be called a component carrier (CC).

[0004] To further improve communication efficiency, designing a reference signal sequence for the bandwidth part (BWP) has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides a communication method and apparatus that accurately obtains a reference signal sequence by indicating relevant parameters of a reference signal sequence on a bandwidth part (BWP), thereby improving the communication efficiency of communication of multiple frequency domain resources.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] Firstly, a communication method is provided. This method can be applied to a terminal, or it can be a component of the terminal (e.g., a processor, circuit, chip, or chip system), or it can be a logic module or software capable of implementing all or part of the terminal's functions. The method may include: acquiring first information. This first information can be used to indicate parameters related to a first reference signal sequence on a first BWP. The first BWP belongs to a first frequency domain resource set. The first frequency domain resource set may include K first frequency domain resources. Correspondingly, the first BWP may include P second frequency domain resources. For example, the second frequency domain resources may be some or all of the frequency domain resources in the first frequency domain resources. For example, K is a positive integer greater than or equal to 2. P is a positive integer less than or equal to K. The first reference signal sequence is determined based on the first information.

[0008] This application improves the communication efficiency of multiple frequency domain resource communication by accurately obtaining the reference signal sequence by indicating the relevant parameters of the reference signal sequence on the BWP.

[0009] In one possible design, the parameters associated with the first reference signal sequence on the first BWP include at least one of the following: a first parameter; a second parameter; or a third parameter. For example, the first parameter may be used to determine a first offset of the frequency domain start position of the first reference signal sequence relative to a first frequency domain position. For example, the second parameter may be used to determine a scrambling identifier. This scrambling identifier may be used to determine the first reference signal sequence. For example, the third parameter may be used to determine the length of the second reference signal sequence. The first reference signal sequence may be a portion of the second reference signal sequence.

[0010] This application provides various parameters for configuring the first reference signal sequence, so as to flexibly configure the first reference signal sequence according to different scenarios, obtain a more accurate first reference signal sequence, and improve communication efficiency.

[0011] In one possible design, the number of first frequency domain positions can be one. Alternatively, the number of first frequency domain positions can be N. For example, N is a positive integer greater than or equal to 2 and less than or equal to P.

[0012] This application is applicable to configuring one or more first frequency domain locations for a first frequency domain resource set, so that a first device can obtain an accurate first reference signal sequence more flexibly based on the one or more first frequency domain locations.

[0013] In one possible design, the second parameter can be used to indicate Q scrambling identifiers. These Q scrambling identifiers are associated with a first set of frequency domain resources. For example, Q is a positive integer less than or equal to P.

[0014] This application is applicable to situations where scrambling identifiers are configured for the entire first frequency domain resource set, allowing for flexible indication of scrambling identifiers corresponding to different frequency domain resources, thereby improving communication efficiency and avoiding mutual interference between signals from different users under multi-user scheduling.

[0015] In one possible design, the second parameter can be used to indicate R fourth parameters. These fourth parameters can be used to determine the scrambling identifier corresponding to at least one second frequency domain resource. For example, R is a positive integer less than or equal to P.

[0016] This application is applicable to situations where scrambling identifiers are configured separately for each frequency domain resource, allowing for flexible indication of the scrambling identifiers corresponding to different frequency domain resources, thereby improving communication efficiency and avoiding mutual interference between signals from different users under multi-user scheduling.

[0017] In one possible design, the second parameter can be used to indicate a first scrambling identifier. This first scrambling identifier corresponds to a target frequency domain resource among P second frequency domain resources. For example, the target frequency domain resource is at least one of the P second frequency domain resources. A second offset may exist between the first scrambling identifier and the second scrambling identifier. For example, the second scrambling identifier corresponds to other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource.

[0018] The embodiments of this application can flexibly indicate scrambling identifiers for different frequency domain resources by indicating a scrambling identifier and using the offset between scrambling identifiers, thus saving the resource consumption caused by the second parameter.

[0019] In one possible design, the second offset can be determined in at least one of the following ways: the first information may further include a fifth parameter. This fifth parameter can be used to determine the second offset. And / or, obtain third information. This third information can be used to indicate the second offset. And / or, determine the second offset based on protocol predefined parameters.

[0020] This application provides multiple methods for determining the second offset, so as to adopt appropriate methods in different scenarios, accurately indicate the second offset, and thus accurately determine the scrambling identifier corresponding to each frequency domain resource, thereby improving communication quality.

[0021] In one possible design, the length of the second reference signal sequence can be the bandwidth of the first frequency domain resource set. Alternatively, the length of the second reference signal sequence can be the bandwidth of any one or more of the first frequency domain resources.

[0022] This application provides a variety of possible second reference signal sequence lengths so that the appropriate length can be used to determine the first reference signal sequence in different scenarios, thereby improving the system's versatility.

[0023] In one possible design, the first reference signal sequence can be composed of a third reference signal sequence. Alternatively, the first reference signal sequence can be composed of M third reference signal sequences. For example, M is a positive integer greater than or equal to 2 and less than or equal to P.

[0024] This application can construct a first reference signal sequence by generating multiple third reference signal sequences separately. Considering that the scrambling identifiers can be different during the generation of the reference signal sequences, the reference signal sequences corresponding to each frequency domain resource can avoid interfering with other signals in multi-user scheduling scenarios, thereby improving communication efficiency.

[0025] In one possible design, the first reference signal sequence may include at least one of the following sequences: a demodulation reference signal (DMRS) sequence; or a channel state information-reference signal (CSI-RS) sequence.

[0026] This application is applicable to the generation of various reference signal sequences, improving the system's versatility.

[0027] In one possible design, where the first reference signal sequence includes a CSI-RS sequence, the first offset may include a third offset and a fourth offset. For example, the third offset may be an offset of the frequency domain start position of the first BWP relative to a first frequency domain position. The fourth offset may be an offset of the frequency domain resources of the CSI-RS sequence relative to the frequency domain start position of the first BWP. The frequency domain resources of this CSI-RS sequence belong to P second frequency domain resources.

[0028] This application provides multiple ways to indicate the first offset, so as to adopt the appropriate method to indicate the first offset in different scenarios and improve the universality of the system.

[0029] In one possible design, the method may further include: acquiring second information. This second information can be used to indicate the generation method of the first reference signal sequence. For example, the generation method of the first reference signal may include at least one of the following: generating the first reference signal sequence based on one first frequency domain position; generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; generating the first reference signal sequence based on a third reference signal sequence; or generating the first reference signal sequence based on M third reference signal sequences.

[0030] This application can also flexibly indicate the generation method of the first reference signal sequence, so as to select a more appropriate method to obtain an accurate first reference signal sequence in different scenarios and improve communication performance.

[0031] In one possible design, the second information can be carried through the first field of the downlink control information (DCI).

[0032] This application can indicate the second information through the first field in the DCI, and can flexibly indicate the generation method of the first reference signal, thereby improving communication efficiency.

[0033] In one possible design, the first field can be the number of antenna ports corresponding to the first reference signal sequence. Alternatively, the first field can be the number of streams corresponding to the first reference signal sequence. Or, the first field can be the number of code division multiplexing (CDM) groups without data.

[0034] This application provides a way to reuse the first field with various other fields, thereby eliminating the need to configure the first field separately and reducing resource consumption.

[0035] Secondly, a communication method is provided. This method can be applied to a network device, or it can be a component of the network device (e.g., a processor, circuit, chip, or chip system), or it can be a logic module or software capable of implementing all or part of the functions of the network device. Alternatively, this method can be applied to a terminal, or it can be a component of the terminal (e.g., a processor, circuit, chip, or chip system), or it can be a logic module or software capable of implementing all or part of the terminal's functions. The method may include: generating first information. This first information can be used to indicate parameters related to a first reference signal sequence on a first BWP. The first BWP belongs to a first frequency domain resource set. The first frequency domain resource set may include K first frequency domain resources. Correspondingly, the first BWP may include P second frequency domain resources. For example, the second frequency domain resources may be some or all of the frequency domain resources in the first frequency domain resources. For example, K is a positive integer greater than or equal to 2. P is a positive integer less than or equal to K. Transmitting the first information.

[0036] In one possible design, the parameters associated with the first reference signal sequence on the first BWP include at least one of the following: a first parameter; a second parameter; or a third parameter. For example, the first parameter may be used to determine a first offset of the frequency domain start position of the first reference signal sequence relative to a first frequency domain position. For example, the second parameter may be used to determine a scrambling identifier. This scrambling identifier may be used to determine the first reference signal sequence. For example, the third parameter may be used to determine the length of the second reference signal sequence. The first reference signal sequence may be a portion of the second reference signal sequence.

[0037] In one possible design, the number of first frequency domain positions can be one. Alternatively, the number of first frequency domain positions can be N. For example, N is a positive integer greater than or equal to 2 and less than or equal to P.

[0038] In one possible design, the second parameter can be used to indicate Q scrambling identifiers. These Q scrambling identifiers are associated with a first set of frequency domain resources. For example, Q is a positive integer less than or equal to P.

[0039] In one possible design, the second parameter can be used to indicate R fourth parameters. These fourth parameters can be used to determine the scrambling identifier corresponding to at least one second frequency domain resource. For example, R is a positive integer less than or equal to P.

[0040] In one possible design, the second parameter can be used to indicate a first scrambling identifier. This first scrambling identifier corresponds to a target frequency domain resource among P second frequency domain resources. For example, the target frequency domain resource is at least one of the P second frequency domain resources. A second offset may exist between the first scrambling identifier and the second scrambling identifier. For example, the second scrambling identifier corresponds to other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource.

[0041] In one possible design, the second offset is determined based on a predefined protocol. For example, the first information may also include a fifth parameter, which can be used to indicate the second offset. Another example is that the method may include: generating third information, which can be used to indicate the second offset; and then sending the third information.

[0042] In one possible design, the length of the second reference signal sequence can be the bandwidth of the first frequency domain resource set. Alternatively, the length of the second reference signal sequence can be the bandwidth of any one or more of the first frequency domain resources.

[0043] In one possible design, the first reference signal sequence can be composed of a third reference signal sequence. Alternatively, the first reference signal sequence can be composed of M third reference signal sequences. For example, M is a positive integer greater than or equal to 2 and less than or equal to P.

[0044] In one possible design, the first reference signal sequence may include at least one of the following sequences: a DMRS sequence; or a CSI-RS sequence.

[0045] In one possible design, where the first reference signal sequence includes a CSI-RS sequence, the first offset may include a third offset and a fourth offset. For example, the third offset may be an offset of the frequency domain start position of the first BWP relative to a first frequency domain position. The fourth offset may be an offset of the frequency domain resources of the CSI-RS sequence relative to the frequency domain start position of the first BWP. The frequency domain resources of this CSI-RS sequence belong to P second frequency domain resources.

[0046] In one possible design, the method may further include: sending second information. This second information can be used to indicate the generation method of the first reference signal sequence. For example, the generation method of the first reference signal may include at least one of the following: generating the first reference signal sequence based on one first frequency domain position; generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; generating the first reference signal sequence based on one third reference signal sequence; or generating the first reference signal sequence based on M third reference signal sequences.

[0047] In one possible design, the second information can be carried through the first field in the DCI.

[0048] In one possible design, the first field can be a field indicating the number of antenna ports corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of streams corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of CDM groups without data.

[0049] In one possible design, the method may further include: determining a first reference signal sequence.

[0050] Thirdly, a communication device is provided. This device can be a terminal, a communication module implementing the functions corresponding to the terminal, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip), a system-on-chip (SoC) containing a modem module, or a system-in-package (SIP) chip. It can also be a logic module or software capable of implementing all or part of the terminal functions. The communication device may include: a processing unit configured to acquire first information. This first information can be used to indicate parameters related to a first reference signal sequence on a first baseband window (BWP). The first BWP belongs to a first frequency domain resource set. The first frequency domain resource set may include K first frequency domain resources. Correspondingly, the first BWP may include P second frequency domain resources. For example, the second frequency domain resources may be some or all of the frequency domain resources in the first frequency domain resources. For example, K is a positive integer greater than or equal to 2. P is a positive integer less than or equal to K. The processing unit is further configured to determine a first reference signal sequence based on the first information.

[0051] In one possible design, the parameters associated with the first reference signal sequence on the first BWP include at least one of the following: a first parameter; a second parameter; or a third parameter. For example, the first parameter may be used to determine a first offset of the frequency domain start position of the first reference signal sequence relative to a first frequency domain position. For example, the second parameter may be used to determine a scrambling identifier. This scrambling identifier may be used to determine the first reference signal sequence. For example, the third parameter may be used to determine the length of the second reference signal sequence. The first reference signal sequence may be a portion of the second reference signal sequence.

[0052] In one possible design, the number of first frequency domain positions can be one. Alternatively, the number of first frequency domain positions can be N. For example, N is a positive integer greater than or equal to 2 and less than or equal to P.

[0053] In one possible design, the second parameter can be used to indicate Q scrambling identifiers. These Q scrambling identifiers are associated with a first set of frequency domain resources. For example, Q is a positive integer less than or equal to P.

[0054] In one possible design, the second parameter can be used to indicate R fourth parameters. These fourth parameters can be used to determine the scrambling identifier corresponding to at least one second frequency domain resource. For example, R is a positive integer less than or equal to P.

[0055] In one possible design, the second parameter can be used to indicate a first scrambling identifier. This first scrambling identifier corresponds to a target frequency domain resource among P second frequency domain resources. For example, the target frequency domain resource is at least one of the P second frequency domain resources. A second offset may exist between the first scrambling identifier and the second scrambling identifier. For example, the second scrambling identifier corresponds to other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource.

[0056] In one possible design, the second offset can be determined in at least one of the following ways: the first information may further include a fifth parameter. This fifth parameter can be used to determine the second offset. And / or, the processing unit is also used to acquire third information. This third information can be used to indicate the second offset. And / or, the second offset is determined based on a protocol predefined value.

[0057] In one possible design, the length of the second reference signal sequence can be the bandwidth of the first frequency domain resource set. Alternatively, the length of the second reference signal sequence can be the bandwidth of any one or more of the first frequency domain resources.

[0058] In one possible design, the first reference signal sequence can be composed of a third reference signal sequence. Alternatively, the first reference signal sequence can be composed of M third reference signal sequences. For example, M is a positive integer greater than or equal to 2 and less than or equal to P.

[0059] In one possible design, the first reference signal sequence may include at least one of the following sequences: a DMRS sequence; or a CSI-RS sequence.

[0060] In one possible design, where the first reference signal sequence includes a CSI-RS sequence, the first offset may include a third offset and a fourth offset. For example, the third offset may be an offset of the frequency domain start position of the first BWP relative to a first frequency domain position. The fourth offset may be an offset of the frequency domain resources of the CSI-RS sequence relative to the frequency domain start position of the first BWP. The frequency domain resources of this CSI-RS sequence belong to P second frequency domain resources.

[0061] In one possible design, the processing unit is further configured to: acquire second information. This second information can be used to indicate the generation method of the first reference signal sequence. For example, the generation method of the first reference signal can include at least one of the following: generating the first reference signal sequence based on one first frequency domain position; generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; generating the first reference signal sequence based on one third reference signal sequence; or generating the first reference signal sequence based on M third reference signal sequences.

[0062] In one possible design, the second information can be carried through the first field in the DCI.

[0063] In one possible design, the first field can be a field indicating the number of antenna ports corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of streams corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of CDM groups without data.

[0064] Fourthly, a communication device is provided. This device can be a network device, a communication module implementing the corresponding functions of a network device, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the functions of a network device. Alternatively, the communication device can be a terminal, a communication module implementing the corresponding functions of a terminal, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the terminal functions. The communication device may include: a processing unit for generating first information. The first information can be used to indicate parameters related to a first reference signal sequence on a first BWP. The first BWP belongs to a first frequency domain resource set. The first frequency domain resource set may include K first frequency domain resources. Correspondingly, the first BWP may include P second frequency domain resources. For example, the second frequency domain resources may be some or all of the frequency domain resources in the first frequency domain resources. For example, K is a positive integer greater than or equal to 2. P is a positive integer less than or equal to K. The transceiver unit is used to send the first piece of information.

[0065] In one possible design, the parameters associated with the first reference signal sequence on the first BWP include at least one of the following: a first parameter; a second parameter; or a third parameter. For example, the first parameter may be used to determine a first offset of the frequency domain start position of the first reference signal sequence relative to a first frequency domain position. For example, the second parameter may be used to determine a scrambling identifier. This scrambling identifier may be used to determine the first reference signal sequence. For example, the third parameter may be used to determine the length of the second reference signal sequence. The first reference signal sequence may be a portion of the second reference signal sequence.

[0066] In one possible design, the number of first frequency domain positions can be one. Alternatively, the number of first frequency domain positions can be N. For example, N is a positive integer greater than or equal to 2 and less than or equal to P.

[0067] In one possible design, the second parameter can be used to indicate Q scrambling identifiers. These Q scrambling identifiers are associated with a first set of frequency domain resources. For example, Q is a positive integer less than or equal to P.

[0068] In one possible design, the second parameter can be used to indicate R fourth parameters. These fourth parameters can be used to determine the scrambling identifier corresponding to at least one second frequency domain resource. For example, R is a positive integer less than or equal to P.

[0069] In one possible design, the second parameter can be used to indicate a first scrambling identifier. This first scrambling identifier corresponds to a target frequency domain resource among P second frequency domain resources. For example, the target frequency domain resource is at least one of the P second frequency domain resources. A second offset may exist between the first scrambling identifier and the second scrambling identifier. For example, the second scrambling identifier corresponds to other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource.

[0070] In one possible design, the second offset is determined based on a predefined protocol. For example, the first information may also include a fifth parameter. This fifth parameter can be used to indicate the second offset. As another example, the processing unit is further configured to generate third information. This third information can be used to indicate the second offset. The transceiver unit is further configured to send the third information.

[0071] In one possible design, the length of the second reference signal sequence can be the bandwidth of the first frequency domain resource set. Alternatively, the length of the second reference signal sequence can be the bandwidth of any one or more of the first frequency domain resources.

[0072] In one possible design, the first reference signal sequence can be composed of a third reference signal sequence. Alternatively, the first reference signal sequence can be composed of M third reference signal sequences. For example, M is a positive integer greater than or equal to 2 and less than or equal to P.

[0073] In one possible design, the first reference signal sequence may include at least one of the following sequences: a DMRS sequence; or a CSI-RS sequence.

[0074] In one possible design, where the first reference signal sequence includes a CSI-RS sequence, the first offset may include a third offset and a fourth offset. For example, the third offset may be an offset of the frequency domain start position of the first BWP relative to a first frequency domain position. The fourth offset may be an offset of the frequency domain resources of the CSI-RS sequence relative to the frequency domain start position of the first BWP. The frequency domain resources of this CSI-RS sequence belong to P second frequency domain resources.

[0075] In one possible design, the transceiver unit is further configured to: transmit second information. This second information can be used to indicate the generation method of the first reference signal sequence. For example, the generation method of the first reference signal can include at least one of the following: generating the first reference signal sequence based on one first frequency domain position; generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; generating the first reference signal sequence based on one third reference signal sequence; or generating the first reference signal sequence based on M third reference signal sequences.

[0076] In one possible design, the second information can be carried through the first field in the DCI.

[0077] In one possible design, the first field can be a field indicating the number of antenna ports corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of streams corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of CDM groups without data.

[0078] In one possible design, the processing unit is also used to: determine a first reference signal sequence.

[0079] Fifthly, a communication device is provided. This device can be a terminal, a communication module implementing the functions corresponding to the terminal, or a chip responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the terminal functions. The communication device may include: a processor configured to acquire first information. This first information can be used to indicate parameters related to a first reference signal sequence on a first BWP. The first BWP belongs to a first frequency domain resource set. The first frequency domain resource set may include K first frequency domain resources. Correspondingly, the first BWP may include P second frequency domain resources. For example, the second frequency domain resources may be some or all of the frequency domain resources in the first frequency domain resources. For example, K is a positive integer greater than or equal to 2. P is a positive integer less than or equal to K. The processor is further configured to determine a first reference signal sequence based on the first information.

[0080] In one possible design, the parameters associated with the first reference signal sequence on the first BWP include at least one of the following: a first parameter; a second parameter; or a third parameter. For example, the first parameter may be used to determine a first offset of the frequency domain start position of the first reference signal sequence relative to a first frequency domain position. For example, the second parameter may be used to determine a scrambling identifier. This scrambling identifier may be used to determine the first reference signal sequence. For example, the third parameter may be used to determine the length of the second reference signal sequence. The first reference signal sequence may be a portion of the second reference signal sequence.

[0081] In one possible design, the number of first frequency domain positions can be one. Alternatively, the number of first frequency domain positions can be N. For example, N is a positive integer greater than or equal to 2 and less than or equal to P.

[0082] In one possible design, the second parameter can be used to indicate Q scrambling identifiers. These Q scrambling identifiers are associated with a first set of frequency domain resources. For example, Q is a positive integer less than or equal to P.

[0083] In one possible design, the second parameter can be used to indicate R fourth parameters. These fourth parameters can be used to determine the scrambling identifier corresponding to at least one second frequency domain resource. For example, R is a positive integer less than or equal to P.

[0084] In one possible design, the second parameter can be used to indicate a first scrambling identifier. This first scrambling identifier corresponds to a target frequency domain resource among P second frequency domain resources. For example, the target frequency domain resource is at least one of the P second frequency domain resources. A second offset may exist between the first scrambling identifier and the second scrambling identifier. For example, the second scrambling identifier corresponds to the scrambling identifier of other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource.

[0085] In one possible design, the second offset can be determined in at least one of the following ways: the first information may further include a fifth parameter. This fifth parameter can be used to determine the second offset. And / or, the processor is also used to acquire third information. This third information can be used to indicate the second offset. And / or, the second offset is determined based on protocol predefined parameters.

[0086] In one possible design, the length of the second reference signal sequence can be the bandwidth of the first frequency domain resource set. Alternatively, the length of the second reference signal sequence can be the bandwidth of any one or more of the first frequency domain resources.

[0087] In one possible design, the first reference signal sequence can be composed of a third reference signal sequence. Alternatively, the first reference signal sequence can be composed of M third reference signal sequences. For example, M is a positive integer greater than or equal to 2 and less than or equal to P.

[0088] In one possible design, the first reference signal sequence may include at least one of the following sequences: a DMRS sequence; or a CSI-RS sequence.

[0089] In one possible design, where the first reference signal sequence includes a CSI-RS sequence, the first offset may include a third offset and a fourth offset. For example, the third offset may be an offset of the frequency domain start position of the first BWP relative to a first frequency domain position. The fourth offset may be an offset of the frequency domain resources of the CSI-RS sequence relative to the frequency domain start position of the first BWP. The frequency domain resources of this CSI-RS sequence belong to P second frequency domain resources.

[0090] In one possible design, the processor is further configured to: acquire second information. This second information can be used to indicate the generation method of the first reference signal sequence. For example, the generation method of the first reference signal can include at least one of the following: generating the first reference signal sequence based on one first frequency domain position; generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; generating the first reference signal sequence based on one third reference signal sequence; or generating the first reference signal sequence based on M third reference signal sequences.

[0091] In one possible design, the second information can be carried through the first field in the DCI.

[0092] In one possible design, the first field can be a field indicating the number of antenna ports corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of streams corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of CDM groups without data.

[0093] Sixthly, a communication device is provided. This communication device can be a network device, a communication module implementing the corresponding functions of a network device, or a chip responsible for communication functions implementing the corresponding functions of a network device, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the functions of a network device. Alternatively, the communication device can be a terminal, a communication module implementing the corresponding functions of a terminal, or a chip responsible for communication functions implementing the corresponding functions of a terminal, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the terminal functions. The communication device may include: a processor for generating first information. The first information can be used to indicate parameters related to a first reference signal sequence on a first BWP. The first BWP belongs to a first frequency domain resource set. The first frequency domain resource set may include K first frequency domain resources. Correspondingly, the first BWP may include P second frequency domain resources. For example, the second frequency domain resources may be some or all of the frequency domain resources in the first frequency domain resources. For example, K is a positive integer greater than or equal to 2. P is a positive integer less than or equal to K. The transceiver is used to send the first message.

[0094] In one possible design, the parameters associated with the first reference signal sequence on the first BWP include at least one of the following: a first parameter; a second parameter; or a third parameter. For example, the first parameter may be used to determine a first offset of the frequency domain start position of the first reference signal sequence relative to a first frequency domain position. For example, the second parameter may be used to determine a scrambling identifier. This scrambling identifier may be used to determine the first reference signal sequence. For example, the third parameter may be used to determine the length of the second reference signal sequence. The first reference signal sequence may be a portion of the second reference signal sequence.

[0095] In one possible design, the number of first frequency domain positions can be one. Alternatively, the number of first frequency domain positions can be N. For example, N is a positive integer greater than or equal to 2 and less than or equal to P.

[0096] In one possible design, the second parameter can be used to indicate Q scrambling identifiers. These Q scrambling identifiers are associated with a first set of frequency domain resources. For example, Q is a positive integer less than or equal to P.

[0097] In one possible design, the second parameter can be used to indicate R fourth parameters. These fourth parameters can be used to determine the scrambling identifier corresponding to at least one second frequency domain resource. For example, R is a positive integer less than or equal to P.

[0098] In one possible design, the second parameter can be used to indicate a first scrambling identifier. This first scrambling identifier corresponds to a target frequency domain resource among P second frequency domain resources. For example, the target frequency domain resource is at least one of the P second frequency domain resources. A second offset may exist between the first scrambling identifier and the second scrambling identifier. For example, the second scrambling identifier corresponds to other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource.

[0099] In one possible design, the second offset is determined based on a predefined protocol. For example, the first information may also include a fifth parameter, which can be used to indicate the second offset. As another example, the processor is further configured to generate third information, which can also be used to indicate the second offset. The transceiver is further configured to transmit the third information.

[0100] In one possible design, the length of the second reference signal sequence can be the bandwidth of the first frequency domain resource set. Alternatively, the length of the second reference signal sequence can be the bandwidth of any one or more of the first frequency domain resources.

[0101] In one possible design, the first reference signal sequence can be composed of a third reference signal sequence. Alternatively, the first reference signal sequence can be composed of M third reference signal sequences. For example, M is a positive integer greater than or equal to 2 and less than or equal to P.

[0102] In one possible design, the first reference signal sequence may include at least one of the following sequences: a DMRS sequence; or a CSI-RS sequence.

[0103] In one possible design, where the first reference signal sequence includes a CSI-RS sequence, the first offset may include a third offset and a fourth offset. For example, the third offset may be an offset of the frequency domain start position of the first BWP relative to a first frequency domain position. The fourth offset may be an offset of the frequency domain resources of the CSI-RS sequence relative to the frequency domain start position of the first BWP. The frequency domain resources of this CSI-RS sequence belong to P second frequency domain resources.

[0104] In one possible design, the transceiver is further configured to: transmit second information. This second information can be used to indicate the generation method of the first reference signal sequence. For example, the generation method of the first reference signal can include at least one of the following: generating the first reference signal sequence based on one first frequency domain position; generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; generating the first reference signal sequence based on a third reference signal sequence; or generating the first reference signal sequence based on M third reference signal sequences.

[0105] In one possible design, the second information can be carried through the first field in the DCI.

[0106] In one possible design, the first field can be a field indicating the number of antenna ports corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of streams corresponding to the first reference signal sequence. Alternatively, the first field can be a field indicating the number of CDM groups without data.

[0107] In one possible design, the processor is also used to: determine a first reference signal sequence.

[0108] A seventh aspect provides a communication system, comprising a terminal and a network device. For example, the terminal can be used to execute the methods of the first aspect and its various possible implementations, and / or execute the methods of the second aspect and its various possible implementations. For example, the network device can be used to execute the methods of the second aspect and its various possible implementations.

[0109] Eighthly, a chip is provided, comprising interface circuitry and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the first and second aspects. The one or more processors are executable to carry out the computer program or instructions, which, when executed, cause the communication device to implement the methods in any possible design or implementation of the first and second aspects. The interface circuitry is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0110] Ninthly, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions; when the computer instructions are executed on a computer, the computer causes the computer to perform a communication method as designed in any of the foregoing aspects.

[0111] A tenth aspect provides a computer program product. The computer program product includes a computer program or instructions that, when executed on a computer, cause the computer to perform a communication method as designed in any of the foregoing aspects.

[0112] The beneficial effects of the methods in any of the second to tenth aspects mentioned above can be referred to the description of the beneficial effects of the methods in the first aspect, and will not be repeated here. Attached Figure Description

[0113] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0114] Figure 2 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0115] Figure 3 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0116] Figure 4 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0117] Figure 5 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0118] Figure 6 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0119] Figure 7 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0120] Figure 8 is a schematic diagram of a reference signal sequence provided in an embodiment of this application;

[0121] Figure 9 is a schematic diagram of a communication method provided in an embodiment of this application;

[0122] Figure 10 is a schematic diagram of frequency domain resource relationships provided in an embodiment of this application;

[0123] Figure 11 is a schematic diagram of a joint carrier provided in an embodiment of this application;

[0124] Figure 12 is a schematic diagram showing the relationship between a portion of the bandwidth and the position of the first frequency domain according to an embodiment of this application;

[0125] Figure 13 is a schematic diagram showing another partial bandwidth and the positional relationship of the first frequency domain provided in an embodiment of this application;

[0126] Figure 14 is a schematic diagram showing the relationship between the frequency domain resources and the first portion of the bandwidth of a first reference signal sequence provided in an embodiment of this application;

[0127] Figure 15 is a schematic diagram showing the relationship between the frequency domain resources and the first portion of the bandwidth of another first reference signal sequence provided in an embodiment of this application;

[0128] Figure 16 is a schematic diagram illustrating the relationship between a scrambling identifier and frequency domain resources provided in an embodiment of this application;

[0129] Figure 17 is a schematic diagram illustrating the relationship between another scrambling identifier and frequency domain resources provided in an embodiment of this application;

[0130] Figure 18 is a schematic diagram showing the relationship between a second reference signal sequence and a first reference signal sequence and a third reference signal sequence provided in an embodiment of this application.

[0131] Figure 19 is a schematic diagram showing the relationship between another second reference signal sequence and the first and third reference signal sequences provided in an embodiment of this application.

[0132] Figure 20 is a schematic diagram showing the relationship between a second reference signal sequence and a first reference signal sequence provided in an embodiment of this application;

[0133] Figure 21 is a schematic diagram showing the relationship between another second reference signal sequence and the first reference signal sequence provided in an embodiment of this application;

[0134] Figure 22 is a schematic diagram showing the positional relationship between a second reference signal sequence, a third reference signal sequence, and a first frequency domain provided in an embodiment of this application.

[0135] Figure 23 is a schematic diagram showing the positional relationship between another second reference signal sequence, a third reference signal sequence and a first frequency domain provided in an embodiment of this application;

[0136] Figure 24 is a schematic diagram of another communication method provided in an embodiment of this application;

[0137] Figure 25 is a schematic diagram of a communication device provided in an embodiment of this application;

[0138] Figure 26 is a schematic diagram of another communication device provided in an embodiment of this application. Detailed Implementation

[0139] Figure 1 is a schematic diagram of the architecture of a communication system 1000 provided in an embodiment of this application. As shown in Figure 1, the communication system 1000 includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is wirelessly connected to the RAN node 110. Terminals and RAN nodes can be interconnected via wired or wireless means. The communication system 1000 may also include a core network 200. The RAN node 110 is connected to the core network 200 via wireless or wired means. The core network equipment in core network 200 and the RAN node 110 in RAN 100 can be independent and different physical devices, or they can be the same physical device that integrates the logical functions of the core network equipment and the logical functions of the RAN node. Communication system 1000 may also include Internet 300.

[0140] RAN100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a future communications network, or a future radio access system as defined in the 3rd generation partnership project (3GPP). RAN100 can also include two or more of the above-mentioned different radio access systems. RAN100 can also be an open RAN (O-RAN).

[0141] RAN nodes, also known as radio access network devices, RAN entities, or access nodes, are used to help terminals access communication systems wirelessly. In one application scenario, an RAN node can be a base station (BS), an evolved NodeB (eNodeB / eNB), a transmission reception point (TRP), a generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a future base station in a future communication network, or a base station in a future mobile communication system. RAN nodes can be macro base stations (as shown in Figure 1, 110a), micro base stations or indoor stations (as shown in Figure 1, 110b), relay nodes, or master nodes.

[0142] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing different functions of the base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). An RU can also be called a radio frequency unit. Here, the CU performs the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), and can also perform the functions of the service data adaptation protocol (SDAP). The DU performs the functions of the base station's radio link control layer and medium access control (MAC) layer, and can also perform some or all of the physical layer functions. For specific descriptions of these protocol layers, refer to the relevant 3GPP technical specifications. The RU can be used to implement radio frequency signal transmission and reception. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as within a baseband unit (BBU). RUs can be included in radio frequency equipment, such as remote radio units (RRUs) or active antenna units (AAUs). CUs can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0143] In different systems, RAN nodes may have different names. For example, in an open radio access network (O-RAN) system, a CU can be called an open CU (O-CU), a DU can be called an open DU (O-DU), and an RU can be called an open RU (O-RU). The RAN nodes in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules. For example, an RAN node can be a server loaded with the corresponding software modules. The embodiments of this application do not limit the specific technology or device form used in the RAN nodes. For ease of description, a base station is used as an example of a RAN node in the following description.

[0144] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from a base station. Terminals can also be called terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal.

[0145] In some examples, the core network 200 may include any core network device such as the access and mobility management function (AMF) entity, the session management function (SMF) entity, the user plane function (UPF) entity, the sensing service control function (SSCF), the sensing data processing function (SDPF), and the unified data management (UDM).

[0146] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.

[0147] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminals 120j that access the wireless access network 100 through 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.

[0148] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0149] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0150] In this application, the base station sends downlink signals or downlink information to the terminal, with the downlink information carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, with the uplink information carried on the uplink channel. To communicate with the base station, the terminal needs to establish a radio connection on a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with this serving cell, it is also susceptible to interference from signals from neighboring cells.

[0151] In a wireless communication system, communication devices are included, and these devices can communicate wirelessly using air interface resources. These communication devices can include network devices and terminal devices; network devices can also be called base station devices, i.e., the wireless access network devices mentioned above. Air interface resources can include at least one of time-domain resources, frequency-domain resources, code resources, and spatial resources. These communication devices can also be called communication apparatuses.

[0152] The solutions provided in this application can be applied to wireless communication between communication devices. Wireless communication can include: wireless communication between network devices and terminals, wireless communication between network devices, and wireless communication between terminals. In this application, the term "wireless communication" can also be simply referred to as "communication," and the term "communication" can also be described as "data transmission," "information transmission," or "transmission."

[0153] In various embodiments of this application, configuration and pre-configuration may be involved. Configuration refers to a network device sending configuration information or parameter values ​​of certain parameters to a terminal via messages or signaling, so that the terminal can determine communication parameters or resources for transmission based on these values ​​or information. Pre-configuration is similar to configuration; it can be parameter information or parameter values ​​pre-negotiated between the network device and the terminal, parameter information or parameter values ​​specified by standard protocols for the network device and / or the terminal, or parameter information or parameter values ​​pre-stored in the network device and / or the terminal. This application does not limit this.

[0154] Optionally, configuration can also be understood as: instructions.

[0155] Furthermore, these values ​​and parameters can be changed, updated, or reconfigured.

[0156] In the embodiments of 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 sending directly via the air interface or sending indirectly via the air interface from other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include receiving directly from YY via the air interface or receiving indirectly from YY via the air interface from 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.

[0157] 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 buses, wiring, or interfaces.

[0158] It is understandable that information may undergo necessary processing, such as encoding and modulation, between the source and destination, but the destination can understand the valid information from the source. Similar statements in this application can be interpreted in a similar way and will not be elaborated further.

[0159] In the embodiments of this application, "instruction" can include direct and indirect instructions, as well as explicit and implicit instructions. For example, the information indicated by a certain piece of information (hereinafter referred to as instruction information) is called the information to be instructed. In the specific implementation process, 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 an association 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 predefined) arrangement order of various information, thereby reducing the instruction overhead to a certain extent. The embodiments of this application do not limit the specific method of instruction. It is understood that for the sender of the instruction information, the instruction information can be used to indicate the information to be instructed; for the receiver of the instruction information, the instruction information can be used to determine the information to be instructed.

[0160] Figure 2 illustrates two system architectures for satellite communication applications. Satellite base stations can provide communication services to terminals. For example, a satellite base station transmits downlink data to a terminal, where the data is encoded using channel coding, and the channel-coded data is then modulated by constellation before being transmitted to the terminal. Similarly, a terminal transmits uplink data to a satellite base station; the uplink data can also be encoded using channel coding, and the encoded data is then modulated by constellation before being transmitted to the satellite base station. Furthermore, as shown in Figure 3, satellite base stations can also communicate with terrestrial base stations; that is, a satellite can act as both a base station and a terminal.

[0161] In the embodiments of this application, the satellite may be a drone, a hot air balloon, a low-Earth orbit satellite, a medium-Earth orbit satellite, a high-Earth orbit satellite, etc. The satellite may also refer to a non-terrestrial base station or non-terrestrial equipment.

[0162] It should be understood that the embodiments of this application can be applied to scenarios of network devices communicating with each other. The scenario shown in Figure 3 can also be regarded as an example of network devices communicating with each other, wherein the satellite base station and the ground base station can be regarded as a network device respectively.

[0163] As one implementation method, the embodiments of this application can be applied to an inter-satellite link communication system, such as the communication between satellite #1 and satellite #2 as shown in Figure 4.

[0164] Inter-satellite link communication systems can be divided into two main parts: an acquisition, pointing, and tracking (APT) subsystem and a communication subsystem. The APT subsystem can include an APT module and an APT transmitter / receiver. The communication subsystem can include a communication module and transceiver antennas. For example, the communication subsystem is responsible for transmitting inter-satellite information and is the core of the inter-satellite communication system. The APT subsystem is responsible for acquisition, alignment, and tracking between satellites. Specifically, it determines the direction of arrival of the incident signal (acquisition); adjusts the transmitted wave to aim at the receiving direction (alignment); and continuously adjusts the alignment and acquisition of the APT throughout the communication process (tracking). To minimize attenuation and interference in the channel while maintaining high security and transmission rate, the APT must be adjusted in real time to continuously adapt to changes.

[0165] Current APT systems are optical systems, which suffer from the difficulty of optical alignment and the need for mechanical pointing adjustments. Most existing communication subsystems are optical communication systems, with some microwave band systems, and most employ a single high-gain antenna. Existing APT systems and communication subsystems are independent systems. The disadvantages are that optical communication is susceptible to vibration and other factors, resulting in unstable data rates; millimeter-wave frequencies are low, leading to low communication capacity, and the antenna requires mechanical pointing adjustments.

[0166] As another implementation, the embodiments of this application can be applied to scenarios of terminal-to-terminal communication, such as Internet of Things (IoT) communication systems.

[0167] Figure 5 illustrates a scenario of wireless screen projection for the Internet of Things (IoT) applicable to an embodiment of this application. A terminal (e.g., a smartphone) establishes a network connection with a television. The smartphone transmits the content to be projected onto the television. After receiving the content transmitted by the smartphone, the television displays the content on its screen.

[0168] It should be understood that the screen projection scenario shown in Figure 5 can be regarded as an example of terminal-to-terminal communication, in which the smartphone and the television can be regarded as a terminal respectively.

[0169] As another implementation method, the embodiments of this application can be applied to integrated access and backhaul (IAB) systems.

[0170] Figure 6 illustrates a scenario of an IAB system applicable to an embodiment of this application. For example, an IAB may include an IAB donor, IAB nodes, and terminals. The link between the IAB donor and IAB nodes is a backhaul link, and the link between the terminal and IAB nodes is an access link. This embodiment can be applied to both communicating parties in a backhaul link or in an access link.

[0171] Figure 7 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application.

[0172] The embodiments of this application can also be applied to O-RAN network architecture. Therefore, Figure 7 illustrates a scenario under the O-RAN architecture. In the O-RAN architecture, access network devices can be divided into three functional entities: O-RU, O-DU, and O-CU. The O-RU is similar to the aforementioned RU, the O-DU is similar to the aforementioned DU, and the O-CU is similar to the aforementioned CU. The interfaces between the functional entities can refer to relevant technologies; for example, the interface between O-CU and O-DU can be called the F1 interface, and the interface between O-DU and O-RU can be called the low-layer split (LLS) interface. The embodiments of this application will not be elaborated further here. The O-RAN network architecture may also include a near-real-time RAN intelligent controller (RIC) and service management and orchestration (SMO).

[0173] The near real-time RIC is primarily used to collect network information and perform necessary optimization tasks. The near real-time RIC communicates with the O-CU and O-DU via the E2 interface. The near real-time RIC may include a QoS management module, a radio connection management module, an interference management module, and a mobility management module.

[0174] The System Management Object (SMO) can include multiple functional modules, such as a non-real-time RIC, a configuration module, a policy module, a design module, and an inventory module. The main functions of the SMO can include operations, administration, and maintenance (OAM) of cloud infrastructure. For example, it can operate, maintain, and manage cloud infrastructure through the O2 interface. The SMO can also operate, maintain, and manage the RAN through the O1 interface. The SMO can also include a non-real-time RIC, such as one that combines artificial intelligence (AI) and big data analytics technologies to achieve non-real-time macro-control and intervention of the O-RAN through the A1 interface. Each functional entity in the O-RAN can function as an independent entity and communicate with the SMO independently using the O1 interface. In some examples, the SMO and near-real-time RIC can communicate through either the A1 or O1 interface; the appropriate communication path can be selected based on the actual situation, which will not be elaborated further in this application. It should be understood that the above system application scenarios are merely examples, and this application can also be applied to other scenarios, which will not be listed here.

[0175] Currently, operator spectrum is quite fragmented, with a single operational spectrum potentially containing more than 10 carriers. Carrier aggregation (CA) in related technologies results in a large number of serving cells, leading to poor user experience across all frequency bands, high network power consumption, and increased terminal implementation complexity. The 3GPP protocol specifies that NR CA can aggregate up to 16 component carriers (CCs). Its maximum bandwidth can reach 6.4 GHz (equivalent to 16 × 400 MHz).

[0176] Carrier aggregation can provide greater bandwidth to a single terminal by aggregating multiple carriers (CCs). This allows the terminal to enjoy bandwidth equal to the total bandwidth of all CCs, significantly improving peak rates. For example, in some application scenarios, three CCs can be aggregated. In this case, a terminal can be served by three carriers simultaneously. One carrier can be a primary component carrier (PCC), and the other two can be secondary component carriers (SCCs). For example, the cell containing the PCC can be called the primary cell (PCell), and the cell containing the SCCs can be called the secondary cell (SCell). In the embodiments of this application, a carrier can also be referred to as a cell.

[0177] Based on whether the CCs belong to the same frequency band and are continuous in the frequency domain, Continuous Aspect Ratios (CAs) can be divided into the following categories: intra-band contiguous CAs, intra-band non-contiguous CAs, and inter-band CAs. In intra-band contiguous CAs, the CCs belong to the same frequency band and are continuous in the frequency domain. In intra-band non-contiguous CAs, the CCs belong to the same frequency band but are not continuous in the frequency domain. In inter-band CAs, the CCs belong to different frequency bands. In this case, the CCs are usually discontinuous in the frequency domain.

[0178] In some cases, CC aggregation needs to meet certain requirements, such as those involving frequency bands and bandwidth. For example, whether the combination of frequency bands and bandwidth is compatible with CA, etc.

[0179] In related technologies, network devices can configure carriers based on a specific subcarrier spacing (SCS) (i.e., SCS-specific carriers) through radio resource control (RRC). Each cell corresponds to a common resource block (CRB) 0 (or point A), and different carriers belonging to the same cell correspond to the same CRB 0. This CRB 0 can be used to generate a reference signal sequence. For example, a sequence k can be generated based on subcarrier 0 of CRB 0. A portion of this sequence k can be used as a reference signal sequence. Referring to Figure 8, network devices or terminals can generate a sequence k with the same length as the bandwidth. The starting position of this sequence k is subcarrier 0 of CRB 0. The reference signal sequence transmitted on the BWP can be determined based on the actual position of the BWP within the bandwidth. The portion of the sequence overlapping with the diagonally lined area is extracted as the reference signal sequence.

[0180] Accordingly, network devices can allocate a portion of the bandwidth (BWP) for communication to terminals. This BWP can be configured for a specific terminal, meaning each terminal has its own dedicated BWP. In related technologies, a cell typically has a maximum of four BWPs. Network devices can use downlink control information (DCI) to indicate the BWP identifier to inform the terminal of the BWP being used. In some examples, the frequency domain resource location of the BWP can also be indicated. In scenarios implementing multi-user (MU) scheduling, the BWPs of multiple terminals often overlap, meaning some frequency domain resources are allocated to multiple terminals simultaneously. For terminals with single-carrier capability, cell selection or reselection can support communication on different carriers. Configuring BWPs via RRC for BWP handover (because carrier handover often means a change in BWP) will result in some communication latency.

[0181] In the MU scheduling scenario, the sequences sent by different terminals on their corresponding BWPs can be made orthogonal by scrambling. For example, a certain scrambling identifier can be used to scramble the reference signal sequence on the reference signal resource.

[0182] For example, for the generation of the demodulation reference signal (DMRS) sequence for the physical downlink shared channel (PDSCH), assuming the DMRS sequence is r(n), the DMRS sequence can be determined by referring to Formula 1.

[0183] Where j represents the imaginary part, and n represents the nth position in the DMRS sequence. c() represents a pseudo-random sequence. For example, the length of the pseudo-random sequence can be determined by a gold sequence of length 31, with an output length of M. PN The sequence c(n), where n = 0, 1, 2, 3, ..., M PN -1. In the random sequence generation process, a pseudo-random sequence is obtained by modulo 2 processing of two m sequences. Referring to Equation 2, c(n)=(x1(n+N) C )+x2(n+N C ))mod2 x1(n+31)=(x1(n+3)+x1(n))mod2 x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2

[0184] ...Formula 2

[0185] Where, N C =1600, the initialization of the first m-sequence x1(n) is x1(0)=1, x1(n′)=0, n′=1,2,3,…,30. The initialization of the second m-sequence x1(n) is determined based on formula 3.

[0186] For example, c init It can be determined according to Formula 4.

[0187] Where l represents the symbol number of the orthogonal frequency division multiplexing (OFDM). This is represented as the slot number within the frame. init This is a scrambling indicator.

[0188] In some cases, it can be determined in the following way in, and It can be determined in the following ways. For example, if the high-level parameter dmrs-Downlink is provided in the DMRS-DownlinkConfig IE, then formula 5 can be used to determine it. And determine with reference to Formula 6

[0189] Where λ represents a code division multiplexing (CDM) group.

[0190] otherwise, as well as

[0191] It is understandable that n SCID The value of ∈{0,1} can be given by the DMRS sequence initialization field (domain) in the DCI associated with the PDSCH transmission, if this field (domain) exists, and if the DCI format is 1_1, 1_2, 1_3, or 4_2. Otherwise, n SCID =0.

[0192] Accordingly, embodiments of this application provide the following four types of high-level parameter indications. The situation.

[0193] Case 1: When the PDSCH is scheduled by the physical downlink control channel (PDCCH) using DCI format 1_1, 1_2, or 1_3, and the cyclic redundancy check (CRC) is scrambled by the cell radio network temporary identifier (C-RNTI), the modulation and coding scheme control radio network temporary identifier (MCS-C-RNTI), or the configured scheduling radio network temporary identifier (CS-RNTI). Should These can be determined or given by the high-level parameters scrapblingID0 and scrapblingID1 in the DMRS-DownlinkConfig IE.

[0194] Case 2: When PDSCH is scheduled by PDCCH using DCI format 1_0, and CRC is scrambled by C-RNTI, MCS-C-RNTI, or CS-RNTI, Should It can be given by the high-level parameter scrapblingID0 in DMRS-DownlinkConfig IE.

[0195] Scenario 3: For cases where multicast is provided in the public multimedia broadcast service (MBS) frequency resources, and the PDSCH is scheduled by the PDCCH using DCI format 4_2, and the CRC is scrambled by the group radio network temporary identifier (G-RNTI) or the group configured scheduling radio network temporary identifier (G-CS-RNTI). Should These can be determined or given by the high-level parameters scrapblingID0 and scrapblingID1 in the DMRS-DownlinkConfig IE.

[0196] Scenario 4: For cases where PDSCH is provided in public MBS frequency resources, and PDSCH is scheduled by PDCCH, and CRC is scrambled by G-RNTI, G-CS-RNTI, MCCH-RNTI, or multicast-MCCH-RNTI, Should It can be given by the high-level parameter scrapblingID0 in DMRS-DownlinkConfig IE.

[0197] In other examples, where high-level parameters are not configured, in, Indicates the physical cell identifier.

[0198] Of course, the above description only uses the DMRS sequence of PDSCH as an example. For the DMRS sequence of PUSCH, if transform precoding of PUSCH is not enabled, the generation method of the DMRS sequence of PUSCH can refer to the generation method of the DMRS sequence of PDSCH, the difference being that the higher-level parameters are replaced with the higher-level parameters scrapblingID0 and scrapblingID1 in DMRS-UplinkConfig IE. For example, the embodiments of this application provide the following four higher-level parameter indications. The situation.

[0199] Scenario 5: When the physical uplink control channel (PUSCH) is scheduled by the PDCCH using DCI format 0_1, 0_2, or 0_3, or when it is transmitted through a PUSCH with configuration authorization, Should These can be determined or given by the high-level parameters scrapblingID0 and scrapblingID1 in the DMRS-uplinkConfig IE.

[0200] Case 6: When PUSCH is scheduled by PDCCH using DCI format 0_0, and CRC is scrambled by C-RNTI, MCS-C-RNTI, or CS-RNTI, Should It can be given by the high-level parameter scrapblingID0 in DMRS-uplinkConfig IE.

[0201] Case 7: For cases where multicast is provided in public MBS frequency resources, and PUSCH is scheduled by PDCCH using DCI format 4_2, and CRC is scrambled by G-RNTI or G-CS-RNTI. Should These can be determined or given by the high-level parameters scrapblingID0 and scrapblingID1 in the DMRS-uplinkConfig IE.

[0202] Case 8: For cases where parameters are provided, PUSCH configuration is provided for each message (massage, msg) A, and PUSCH transmission is triggered by a type 2 random access procedure, Should It can be given by the high-level parameters msgA-ScramblingID0 and msgA-ScramblingID1 in msgA-DMRS-Config IE.

[0203] Accordingly, for n SCID For the values ​​∈{0,1}, if the DCI format used is 0_1, 0_2, or 0_3, then n SCID This can be given by the DMRS sequence initialization field (domain) in the DCI associated with the PUSCH transport, if the field (domain) exists; or, for a PUSCH transport of type 1 with configuration authorization, n SCID It can be indicated by the higher-layer parameter dmrs-SeqInitialization, if it exists; or, for PUSCH transmissions of type 2 random access procedures, n SCID The mapping between the preamble and the PUSCH timing, along with the associated DMRS resources, can be used to determine the PUSCH transmission based on configuration grants in the RRC inactive state; or, for PUSCH transmissions based on configuration grants in the RRC inactive state, n SCID This can be determined by the mapping and association of DMRS resources between the synchronization signal and physical broadcast channel block (SS / PBCH) and PUSCH timing. Otherwise, n SCID =0.

[0204] For the DMRS sequence of PUSCH, if transform precoding of PUSCH is enabled, the DMRS sequence r(n) can be determined with reference to Equation 7.

[0205] in, This indicates the number of Reinforcement Blocks (RBs) occupied by the PUSCH, where δ is a parameter of the sequence r(n). For the case where δ is 1, it can depend on the following configuration. For example, if the higher-level parameter dmrs-UplinkTransformPrecoding is configured, the PUSCH uses... Modulation, the PUSCH transmission is not a msg3 transmission, and the transmission is not scheduled in the common search space using DCI format 0_0, then... Initialization can be based on c init Confirmed. This c init You can refer to Formula 8 to determine this.

[0206] It can be seen that Formula 8 is similar to Formula 4, the difference being... Replace with n SCID Where n SCID=0, unless given by the DCI in a transmission scheduled by DCI format 0_1; or given by the DCI in a transmission scheduled by DCI format 0_2 if the antenna port field in DCI format 0_2 is not 0 bits; or given by the DCI in a transmission scheduled by DCI format 0_3; or, for PUSCH transmissions scheduled by type 1 configuration grant, given by the higher-layer parameter antenna port. For example, the following two cases:

[0207] Case 9: If parameters are provided, PUSCH is scheduled via DCI format 0_1, or if the antenna port field in DCI format 0_2 is not 0 bits, or via DCI format 0_3, or via PUSCH transmission with configuration authorization. Should These can be determined or given by the high-level parameters pi2BPSK-ScramblingID0 and pi2BPSK-ScramblingID1 in the DMRS-uplinkConfig IE, respectively.

[0208] Case 10: If parameters are provided, PUSCH is scheduled by DCI format 0_0, and CRC is scrambled by C-RNTI, MCS-C-RNTI, or CS-RNTI; or if the antenna port field in DCI format 0_2 is 0 bits, then it is scheduled by DCI format 0_2. Should This can be given by the high-level parameter pi2BPSK-ScramblingID0 in the DMRS-uplinkConfig IE.

[0209] In other examples, where high-level parameters are not configured,

[0210] In some cases, when the cyclic shift parameter α = 0, It can be determined according to formula 9

[0211] Where e is the natural constant. Let n be a base sequence, and 0 ≤ n ≤ M. ZC M ZC This can be the length of the sequence. The base sequence can be divided into multiple base sequence groups, where u is the group number, ranging from 0 to 29, for a total of 30 group numbers. Each base sequence group includes one or more base sequences, and v represents the base sequence number within each group. For example, It can be determined in the following ways.

[0212] like, for example, The higher-level parameter nPUSCH-Identity is configured via the DMRS-UplinkConfig IE. Furthermore, the higher-level parameter dmrs-UplinkTransformPrecoding is not configured, or the higher-level parameter dmrs-UplinkTransformPrecoding is configured but PUSCH is not used. -BPSK modulation. Furthermore, PUSCH is not scheduled via random access response (RAR) UL authorization, nor via DCI format 0_0 scheduling, where the CRC is scrambled by TC-RNTI.

[0213] For example, For example, the high-level parameter dmrs-UplinkTransformPrecoding is configured, and PUSCH uses... -BPSK modulation, PUSCH is not a msg3 transmission, and the transmission is not scheduled by DCI format 0_0 in the common search space.

[0214] In other cases

[0215] For cases where neither group transitions nor sequence transitions are enabled, f gh =0, and v=0.

[0216] For cases where group transitions are enabled but sequence transitions are not, v = 0, and The pseudo-random sequence can be described with reference to the previous example, and it is initialized as follows:

[0217] For cases where sequence transitions are enabled but group transitions are disabled, f gh =0, and v is determined by referring to Formula 10.

[0218] The pseudo-random sequence can be described with reference to the previous example, and it is initialized as follows:

[0219] Sequence transitions and group transitions can be indicated by corresponding high-level parameters. For specific implementation, please refer to relevant technologies. This application does not limit the implementation.

[0220] As can be seen, the DMRS sequence determination process mentioned above requires the generation of a pseudo-random sequence. This pseudo-random sequence generation is based on scrambling identifiers. Of course, the specific implementation process can be found in relevant technologies, and will not be elaborated upon in this application's embodiments.

[0221] Based on the communication direction, DMRS can be divided into uplink DMRS and downlink DMRS. Based on the time-frequency resource location of the DMRS, it can be divided into front-loaded DMRS and additional DMRS. A front-loaded DMRS can be considered as a pilot located relatively early in the overall channel resource location. An additional DMRS can be considered as a pilot located relatively late in the overall channel resource location. The additional DMRS can improve the accuracy of channel estimation. Of course, for the specific implementation method of DMRS, please refer to relevant technologies; the embodiments in this application will not be elaborated further.

[0222] During resource mapping for DMRS, the device can assume that the DMRS quantizes the transmitted power based on a scaling factor and maps it to a physical resource element (RE). During mapping, the subcarriers and time-domain symbols to be mapped need to be determined. Accordingly, the subcarriers to be mapped can be determined based on a reference point. Equation 11 provides one method for mapping a reference signal.

[0223] Here, k represents the subcarrier identifier in the frequency domain, and l represents the symbol identifier in the time domain. r() is the aforementioned sequence r(). There is a pre-configured association between k′, l′, and Δ. The reference symbol indicates the identification. The specific implementation process of this formula can be found in related technologies, and will not be elaborated further in the embodiments of this application.

[0224] During the generation of DMRS, network devices can configure the frequency domain resource location of DMRS, and terminals can determine k and the corresponding parameters mentioned above based on the reference point and the frequency domain resource location of DMRS.

[0225] For example, in the DMRS determination process of a PDCCH, if the corresponding PDCCH is associated with the common search space of control resource set (CORESET) 0 and type 0-PDCCH, and is addressed to the system information (SI) radio network temporary identity (RNTI), then reference point k is subcarrier 0 of the resource block with the smallest number in CORESET 0. Otherwise, reference point k is subcarrier 0 in common resource block 0.

[0226] For example, consider the reference point in the DMRS determination process for a PDSCH. For a PDSCH carrying remaining minimum system information (RMSI), subcarrier 0 can be in the smallest numbered common resource block (RB) in the CORESET configured in the physical broadcast channel (PBCH). Otherwise, subcarrier 0 is in common RB 0.

[0227] For example, the reference point in the uplink DMRS determination process can be subcarrier 0 in common RB 0.

[0228] Obviously, based on the descriptions of the above embodiments, the determination of the DMRS sequence requires scrambling identifiers (i.e., c) init This is generated. Furthermore, during the mapping process, the sequence also needs to be mapped to the corresponding resources based on the reference point.

[0229] In current communication processes, a Pilot Buffer (BWP) belongs to a carrier or frequency band, and this BWP is a continuous frequency domain resource. Therefore, data transmission in a BWP corresponds to a scrambling identifier, and the pilot sequence in this BWP is uniformly generated based on the carrier to which the BWP belongs. For example, the pilot sequence is uniformly generated based on CRB 0 of this carrier as a reference point.

[0230] However, when a cell supports frequency domain resources of multiple carriers or multiple frequency bands, how to generate the pilot sequence within the BWP becomes a problem that needs to be solved.

[0231] Therefore, this application provides a communication method that, in a communication scenario where a cell supports multiple frequency domain resources, accurately obtains the reference signal sequence by indicating the relevant parameters of the reference signal sequence on the BWP, thereby improving the communication efficiency of communication for multiple frequency domain resources.

[0232] The communication method and apparatus will be further described below with reference to the accompanying drawings. It is understood that the embodiments of this application use a terminal and network device as examples of the execution subjects in the interactive illustration, but this application does not limit the execution subjects of the interactive illustration. The method executed by the terminal in this application can also be implemented by modules in the terminal (e.g., circuits, processors, chips, or chip systems), or by logical nodes, logical modules, or software that can implement all or part of the terminal functions.

[0233] In the embodiments of this application, the term "wireless communication" can also be abbreviated as "communication", and the term "communication" can also be described as "data transmission", "information transmission" or "transmission".

[0234] Figure 9 is a schematic diagram of a communication method provided in an embodiment of this application.

[0235] This communication process is applicable to, but not limited to, the communication scenarios shown in Figures 1 to 7. This method can be applied to LTE, LTE frequency division duplex (FDD) systems, LTE TDD, 5G systems, or NR systems, future communication systems (such as future communication systems), V2X (where V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), long-term evolution-vehicle (LTE-V), vehicle-to-everything (V2X), MTC, IoT, long-term evolution-machine (LTE-M), machine-to-machine (M2M), and device-to-device (D2D) wireless communication scenarios. The method may include the following steps:

[0236] S101, the first device acquires the first information.

[0237] For example, the first information can be used to indicate (or determine) parameters associated with a first reference signal sequence on the first BWP. In various embodiments of this application, the reference signal can also be referred to as a pilot. The first BWP can belong to a first frequency domain resource set. The first frequency domain resource set includes K first frequency domain resources. The first BWP can include P second frequency domain resources. For example, K is a positive integer greater than or equal to 2. P is a positive integer less than or equal to K.

[0238] In various embodiments of this application, the first reference signal (or third reference signal) on the first BWP can also be referred to as the first reference signal (or third reference signal) in the first BWP. The first reference signal (or third reference signal) on the second frequency domain resource can also be referred to as the first reference signal (or third reference signal) in the second frequency domain resource, or as the first reference signal (or third reference signal) of the second frequency domain resource. For a description of the third reference signal, please refer to the following embodiments.

[0239] For example, the second frequency domain resource can be a portion of the first frequency domain resource. Alternatively, the second frequency domain resource can be all the frequency domain resources in the first frequency domain resource set, meaning the second frequency domain resource is the same as the first frequency domain resource. Referring to Figure 10, assume the first frequency domain resource set includes four first frequency domain resources, such as first frequency domain resource 0, first frequency domain resource 1, first frequency domain resource 2, and first frequency domain resource 3. The first BWP includes two second frequency domain resources, such as second frequency domain resource 0 and second frequency domain resource 1. It can be seen that first frequency domain resource 2 and second frequency domain resource 1 are the same frequency domain resource, and second frequency domain resource 0 is a portion of the first frequency domain resource 1.

[0240] It is worth noting that the gaps between the first frequency domain resources in Figure 10 are used to represent the frequency domain guard intervals between the first frequency domain resources. In some examples, the frequency domain range occupied by the frequency domain guard interval may be very small, such as occupying a few RBs, a few REs, or a few subcarriers. Accordingly, the frequency domain resources corresponding to the first BWP and the frequency domain guard interval may not be used for signal transmission, and this application embodiment does not limit this. For example, the first device may not consider the reference signal sequence corresponding to this part of the resources.

[0241] The parameters related to the first reference signal sequence on the first BWP are described in more detail in the following embodiments, which can be referred to in the following embodiments.

[0242] In some cases, it can be assumed that the first reference signal sequence can subsequently be transmitted on the first BWP. For example, the first BWP may be a BWP assigned to the terminal by the network device. The terminal and the network device can communicate on the first BWP. For instance, the terminal can transmit the uplink first reference signal sequence on the first BWP, and the network device can also transmit the downlink first reference signal sequence on the first BWP.

[0243] In some embodiments, the first frequency domain resource and the second frequency domain resource can be any frequency domain resource such as a band, subband, or carrier. In other embodiments, the first frequency domain resource and the second frequency domain resource can also be a portion of the frequency domain resources within a band, subband, or carrier. For example, the first frequency domain resource is a carrier frequency (CC), and the second frequency domain resource is a portion of the CC; or, the first frequency domain resource is a frequency domain resource within a certain frequency band, and the second frequency domain resource is a portion of the frequency domain resources corresponding to the first frequency domain resource. Subsequent embodiments will use the example of the first frequency domain resource being a carrier and the second frequency domain resource being a carrier or a portion of the carrier's frequency domain resources for description, but it is understood that this application does not limit this approach.

[0244] Optionally, the frequency band in this application may be the operating band defined by the NR protocol in the prior art, or it may be a portion of the frequency domain resources within the operating band. A frequency band may refer to a segment of frequency domain resources, which may include continuous resources or discontinuous resources; this application does not limit this.

[0245] In some embodiments, the first frequency domain resource set may also be referred to as a uni-carrier, joint carrier, or CC group, etc., and this application embodiment does not limit this. For example, the first frequency domain resource set may include multiple CCs. The network device can perform overall resource scheduling and configuration based on the first frequency domain resource set. The first frequency domain resource set can be regarded as a virtual single CC, that is, a logical single CC. For example, the first frequency domain resource set can share a radio frequency channel. For another example, the signal transmission process in the first frequency domain resource set can be regarded as a large-scale fast fourier transform (FFT) operation, etc. In some examples, the network device can configure multiple first frequency domain resource sets (i.e., uni-carrier, joint carrier, or CC group). Each first frequency domain resource set (i.e., uni-carrier, joint carrier, or CC group) includes one or more CCs.

[0246] Optionally, the first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group) can be divided / configured according to the frequency band or frequency domain range where the CC is located. For example, multiple CCs in frequency range (FR) 1 form a first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group), multiple CCs in FR2 form a first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group), multiple CCs in FR3 form a first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group), and so on.

[0247] Optionally, the multiple CCs of the terminal may include an anchor carrier and a capacity carrier. For example, the anchor carrier may include at least one of the following functions: camping, receiving paging, low-power (LP) wake-up signal (WUS), etc. For example, the terminal may send uplink LP-WUS. As another example, the capacity carrier may include communication functions, such as sending and receiving service data. In various embodiments of this application, the anchor carrier may also be referred to as a coverage carrier, that is, a CC that guarantees the basic coverage performance of the terminal. Refer to Figure 11 for a schematic diagram of a joint carrier.

[0248] Optionally, the anchor carrier and capacity carrier for a terminal can come from one network device (such as a base station) or from multiple network devices (such as a base station).

[0249] Optionally, multiple CCs in a first frequency domain resource set (i.e., a unified carrier, a joint carrier, or a CC group) can be co-located (or quasi-co-located (QCL)) or non-co-located.

[0250] Optionally, the first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group) may include the first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group) for downlink (DL) and the first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group) for uplink (UL). Alternatively, a first frequency domain resource set (i.e., unified carrier, joint carrier, or CC group) may include either DL resources or UL resources.

[0251] Optionally, the first frequency domain resource set (i.e., a unified carrier, a joint carrier, or a CC group) may include a first frequency domain resource set (i.e., a unified carrier, a joint carrier, or a CC group) for transmission and a first frequency domain resource set (i.e., a unified carrier, a joint carrier, or a CC group) for reception. Alternatively, a first frequency domain resource set (i.e., a unified carrier, a joint carrier, or a CC group) may include both transmission resources and reception resources.

[0252] It can be seen that flexible separate management of uplink and downlink is possible for the first frequency domain resource set (i.e., unified carrier, joint carrier or CC group).

[0253] In the embodiments of this application, "uplink" can refer to "sending" and "downlink" can refer to "receiving".

[0254] In some embodiments, the first device can be a terminal or a network device. For example, if the first device is a terminal, then the terminal can receive the first information. Correspondingly, the network device can send the first information. As another example, if the first device is a network device, then the network device can generate the first information itself. In some examples, when the network device generates the first information, it can also send the generated first information; this application embodiment does not impose limitations.

[0255] In some embodiments, the first reference signal sequence may include a DMRS sequence. As another example, the first reference signal sequence may include a channel state information-reference signal (CSI-RS) sequence. Yet another example is that the first reference signal sequence may include both a DMRS sequence and a CSI-RS sequence.

[0256] The embodiments of this application are applicable to the generation of various reference signal sequences, thereby improving the system's versatility.

[0257] S102, the first device determines the first reference signal sequence based on the first information.

[0258] For example, if the first device is a terminal, the terminal can determine the first reference signal sequence on the first BWP based on the first information obtained in S101. For example, the terminal executes S101 first and then S102.

[0259] In some examples, where the first device is a network device, one scenario is that S101 is executed first, followed by S102. Another scenario is that the network device may not execute S102, for example, the network device can determine the first reference signal sequence itself. Then, S101 is executed, such as when the network device can obtain the first information based on the first reference signal sequence.

[0260] Optionally, if the first device is a network device, and the network device needs to indicate first information to the terminal, the network device can generate the first information. Furthermore, the network device can send the first information. The first reference signal sequence is associated with the first information.

[0261] S103, the first device transmits a first reference signal sequence. Correspondingly, the second device receives the first reference signal sequence. Alternatively, the second device transmits the first reference signal sequence. Correspondingly, the first device receives the first reference signal sequence.

[0262] Optionally, for the case where S103 is the first device receiving the first reference signal sequence, S101, S102 and S103 can be performed simultaneously; or, S103 can be executed first, followed by S101 and S102. This application does not limit this.

[0263] For example, a first device can generate a first reference signal sequence based on the frequency domain resources corresponding to a first reference signal in a first BWP. For example, the first device can generate the first reference signal sequence based on parameters related to the first reference signal sequence on the first BWP, and the frequency domain resources corresponding to the first reference signal in the first BWP. The first device can transmit the first reference signal sequence. For example, a second device can receive the first reference signal sequence. In various embodiments of this application, transmitting a reference signal sequence can also be understood as transmitting a reference signal.

[0264] In some embodiments, the second device may be a terminal or a network device. For example, the first device may be a terminal and the second device may be a network device. Or, for example, the first device may be a network device and the second device may be a terminal.

[0265] It is understood that S103 is an optional step, meaning that the first device may or may not send the first reference signal sequence. The specific implementation can be determined based on the first device, and this application embodiment does not limit this.

[0266] This application embodiment considers a communication scenario where a cell supports multiple frequency domain resources. By indicating the relevant parameters of the reference signal sequence on the BWP, the reference signal sequence can be accurately obtained, thereby improving the communication efficiency of communication across multiple frequency domain resources.

[0267] The parameters associated with the first reference signal sequence on the first BWP will be described in more detail below.

[0268] In the communication method provided in this application embodiment, the first information can be considered as configuration information of the first reference signal sequence. This first information may include one or more parameters for configuring the first reference signal sequence. For example, parameters related to the first reference signal sequence on the first BWP may include one or more of a first parameter, a second parameter, and a third parameter. This application embodiment provides multiple parameters for configuring the first reference signal sequence, so as to flexibly configure the first reference signal sequence according to different scenarios, obtain a more accurate first reference signal sequence, and improve communication efficiency.

[0269] In some embodiments, the parameters associated with the first reference signal sequence on the first BWP may include a first parameter. For example, the first parameter may be used to determine a first offset of the frequency domain start position of the first reference signal sequence relative to a first frequency domain position. For example, the first frequency domain position may be the reference point mentioned in the foregoing embodiments, or reference RB0, or subcarrier 0 of reference RB0, or common RB0, etc., and is not limited in the embodiments of this application. In various embodiments of this application, the offset may also be referred to as bias.

[0270] Optionally, the first parameter can be used to determine the frequency domain start position of the first reference signal sequence. For example, the first parameter can be used to indicate a first offset. The first device can determine the frequency domain start position of the first reference signal sequence based on the first frequency domain position and the first offset.

[0271] In some embodiments, the first device can determine the frequency domain start position of the first reference signal sequence based on the first frequency domain position and the first offset. When the first device obtains a second reference signal sequence, it can select a portion of the second reference signal sequence as the first reference signal sequence based on the frequency domain start position of the first reference signal sequence. The second reference signal sequence is the sequence r() mentioned in the foregoing embodiments. This sequence can be based on a pseudo-random sequence c. initIt can be seen that the first reference signal sequence is related to the time-frequency resources of the first reference signal (such as the frequency domain starting position of the first reference signal sequence).

[0272] For example, the number of first frequency domain positions can be one. In this case, the first device can generate a second reference signal sequence based on this one first frequency domain position. The first device can determine the corresponding first reference signal sequence from the second reference signal sequence based on a first offset between the first reference signal sequence and the first frequency domain position.

[0273] For example, the first frequency domain position can be the aforementioned reference point. The first device can obtain k in the aforementioned formula 11 based on the first frequency domain position and the first offset, and then, combined with other parameters in formula 11 (such as k′, l′, and Δ), and the sequence r(), can obtain the first reference signal sequence. Specific implementation details can be found in the foregoing embodiments, and will not be repeated in this application. That is, the first frequency domain position can be considered as the reference point for the first reference signal sequence (such as a DMRS sequence or a CSI-RS sequence). For example, the first frequency domain position can be subcarrier 0 of the first frequency domain resource set (or subcarrier 0 of reference RB0).

[0274] Referring to Figure 12, assuming there is one first frequency domain position, i.e., first frequency domain position 0, then the first device can determine (or generate) the first reference signal sequence on the first BWP, such as a DMRS sequence or a CSI-RS sequence, based on this first frequency domain position 0.

[0275] For example, the number of first frequency domain positions can be N. N is a positive integer greater than or equal to 2 and less than or equal to P. That is, for one or more first frequency domain resources, the first frequency domain position belonging to that one or more first frequency domain resources can be determined.

[0276] Optionally, one first frequency domain location can correspond to one first frequency domain resource. For example, suppose the first frequency domain resource set includes 8 first frequency domain resources, or 8 CCs. A maximum of 8 first frequency domain locations can be configured, that is, each CC corresponds to one first frequency domain location.

[0277] Optionally, one first frequency domain position can correspond to at least two first frequency domain resources. For example, the set of first frequency domain resources can be configured with 5 first frequency domain positions, such as the first first frequency domain position corresponding to CC 1; the second first frequency domain position corresponding to CC 2; the third first frequency domain position corresponding to CC 3 and CC 4; the fourth first frequency domain position corresponding to CC 5; and the fifth first frequency domain position corresponding to CC 6, CC 7 and CC 8.

[0278] Of course, the above allocation is only an exemplary description. The embodiments of this application do not limit the specific number of first frequency domain positions, nor do they limit the correspondence between each frequency domain resource and the first frequency domain position.

[0279] For example, the first device can obtain multiple k from the aforementioned formula 11 based on multiple first frequency domain positions and a first offset. Then, combining other parameters in formula 11 (such as k′, l′, and Δ) and the sequence r(), multiple third reference signal sequences can be obtained. These multiple third reference signal sequences can constitute a first reference signal sequence. For instance, referring to Figure 10, if a second frequency domain resource is part or all of a first frequency domain resource, it can be considered that the second frequency domain resource is related to the first frequency domain resource. The first frequency domain position corresponding to the first frequency domain resource can then be used to determine the first reference signal sequence on the second frequency domain resource. In other words, the first frequency domain position corresponds to the second frequency domain resource. Therefore, for each second frequency domain resource, the third reference signal sequence corresponding to the second frequency domain resource can be determined based on the first frequency domain position corresponding to the second frequency domain resource. The specific determination process can refer to the process of determining the first reference signal sequence in the case of one first frequency domain position, which will not be repeated in this embodiment. Correspondingly, the third reference signal sequences corresponding to each of the multiple second frequency domain resources together constitute the first reference signal sequence.

[0280] These multiple first frequency domain positions can be considered as reference points for a first reference signal sequence (such as a DMRS sequence or a CSI-RS sequence). For example, any one of these multiple first frequency domain positions can be a subcarrier 0 of a certain first frequency domain resource (or a subcarrier 0 of reference RB0). Alternatively, the multiple first frequency domain positions can be subcarrier 0 of certain frequency bands, certain carriers, or certain subbands in the first frequency domain resource set (or subcarrier 0 of reference RB0).

[0281] Referring to Figure 13, assume there are two first frequency domain positions: first frequency domain position 0 and first frequency domain position 1. First frequency domain position 1 is located in the first BWP (i.e., BWP 0). Then, the first reference signal sequence on BWP 0 can be divided into two parts, each of which can determine (or generate) a third reference signal sequence. For example, BWP 0 includes second frequency domain resource 0 and second frequency domain resource 1. Second frequency domain resource 1 is a portion of the frequency domain resource in first frequency domain resource 2, and first frequency domain position 1 is related to first frequency domain resource 2. Therefore, the third reference signal sequence corresponding to the second frequency domain resource 1 can be determined based on first frequency domain position 1, as shown in the second part of Figure 13. Second frequency domain resource 0 is a portion of the frequency domain resource in first frequency domain resource 1, and first frequency domain position 0 is related to both first frequency domain resource 0 and first frequency domain resource 1. Therefore, the third reference signal sequence corresponding to the second frequency domain resource 0 can be determined based on first frequency domain position 0, as shown in the first part of Figure 13. These two parts of the third reference signal sequence constitute the first reference signal sequence.

[0282] It is clear that during the generation of the first reference signal sequence corresponding to the first BWP, if it is necessary to determine (or generate) a third reference signal sequence based on multiple first frequency domain positions, then the number of third reference signal sequences determined depends on how many first frequency domain positions are associated with the P second frequency domain resources. There is a case where the P second frequency domain resources included in the first BWP are associated with only one first frequency domain position; in this case, the determination of the first reference signal sequence on the first BWP can be done in the manner shown in Figure 12.

[0283] It is understandable that a network device can configure multiple first frequency domain locations based on a first frequency domain resource set, and the number of first frequency domain locations configured by the network device can be greater than or equal to N. That is, in determining the first reference signal sequence, the number of first frequency domain locations that need to be considered is part or all of the multiple first frequency domain locations configured by the network device. For example, in a scenario where the first reference signal sequence consists of multiple third reference signal sequences, one possibility is that a third reference signal sequence is determined for each second frequency domain resource included in the first BWP. Another possibility is that a portion of the first BWP contains second frequency domain resources, and each of these second frequency domain resources is assigned a third reference signal sequence. A third reference signal sequence can be determined by multiple second frequency domain resources within that portion. For example, if the first BWP includes four second frequency domain resources, second frequency domain resource 1 determines third reference signal sequence 1, second frequency domain resource 2 determines third reference signal sequence 2, and second frequency domain resource 3 and second frequency domain resource 4 together determine third reference signal sequence 3. In the process of determining the third reference signal sequence 3, the length of the second reference signal sequence can be considered as the total bandwidth of frequency domain resources 3 and 4. Of course, the above is merely an exemplary description, and this application embodiment does not limit which second frequency domain resources jointly determine a third reference signal sequence.

[0284] In some embodiments, for the above embodiments, it is assumed that the first reference signal sequence is a DMRS sequence. Accordingly, the frequency domain resources of the DMRS sequence are a portion of the frequency domain resources in the first BWP. For example, the frequency domain resources of the DMRS sequence can be indicated to the terminal by the network device through physical layer signaling (such as DCI). Accordingly, the first device transmits the DMRS sequence on the frequency domain resources of the DMRS sequence in the first BWP during the transmission of the DMRS sequence. Refer to Figure 14 for the relationship between the frequency domain resources of the DMRS sequence and BWP 0. For example, the DMRS sequence can be determined (or generated) based on the frequency domain resources of the entire DMRS sequence, that is, the frequency domain resources of the DMRS sequence correspond to a first frequency domain position. Or, the DMRS sequence can be determined (or generated) based on multiple first frequency domain positions. Each first frequency domain position is associated with one or more second frequency domain resources. These multiple DMRS sequences constitute a complete DMRS sequence.

[0285] In some examples, where the first reference signal sequence includes a CSI-RS sequence, the first offset indicated by the first parameter may include a third offset and a fourth offset. For example, the third offset may be an offset of the frequency domain start position of the first BWP relative to a first frequency domain position. The fourth offset may be an offset of the frequency domain resources of the CSI-RS sequence relative to the frequency domain start position of the first BWP. The frequency domain resources of the CSI-RS sequence belong to P second frequency domain resources.

[0286] Referring to Figure 15, assuming the first reference signal sequence is a CSI-RS sequence, one scenario is that the first parameter directly indicates the first offset, i.e., the frequency domain offset between the first frequency domain position (e.g., first frequency domain position 0) and the frequency domain resources of the CSI-RS sequence. Another scenario is that the first frequency domain position (e.g., first frequency domain position 0) and the frequency domain resources of the CSI-RS sequence can be jointly indicated by the third and fourth offsets. That is, the first parameter can indicate the frequency domain offset between the first frequency domain position (e.g., first frequency domain position 0) and the frequency domain start position of the first BWP (e.g., BWP 0), i.e., the third offset, and the frequency domain offset between the frequency domain start position of the first BWP (e.g., BWP 0) and the frequency domain resources of the CSI-RS sequence, i.e., the fourth offset. The first device can determine the CSI-RS sequence based on the first offset, or based on the third and fourth offsets.

[0287] It is understandable that there can be one or more first frequency domain positions. In the case where there are multiple first frequency domain positions, the first offset determined for each first frequency domain position can be replaced by the third and fourth offsets corresponding to that first frequency domain position.

[0288] This application provides multiple ways to indicate the first offset, so as to use an appropriate method to indicate the first offset in different scenarios and improve the system's versatility.

[0289] The embodiments of this application are applicable to configuring one or more first frequency domain locations for a first frequency domain resource set, so that a first device can obtain an accurate first reference signal sequence more flexibly based on the one or more first frequency domain locations.

[0290] In other embodiments, the parameters associated with the first reference signal sequence on the first BWP may include a second parameter. For example, the second parameter may be used to determine a scrambling identifier. This scrambling identifier may be used to determine (or generate) the first reference signal sequence. For instance, referring to the foregoing embodiments, the scrambling identifier needs to be considered in determining the second reference signal sequence. The specific process of determining the second reference signal sequence based on the scrambling identifier can be found in related technologies, and will not be elaborated further in this application.

[0291] In various embodiments of this application, the identifier may be an identity (ID) or an index.

[0292] In some examples, the scrambling identifier can be associated with a first frequency domain resource set. For instance, the scrambling identifier can be configured for a first frequency domain resource set. In other words, the scrambling identifier can be configured at the frequency domain resource set level.

[0293] For example, multiple scrambling identifiers can be configured for a first set of frequency domain resources. In this case, the second parameter can indicate Q of the multiple scrambling identifiers, where Q is a positive integer less than or equal to P. That is, the second parameter can determine the scrambling identifier corresponding to one or more frequency domain resources among the P second frequency domain resources included in the first BWP.

[0294] Optionally, one second frequency domain resource can correspond to one scrambling identifier, or one scrambling identifier can correspond to one second frequency domain resource. Assuming the first BWP includes 8 second frequency domain resources, then the second parameter can indicate 8 scrambling identifiers, that is, one scrambling identifier corresponds to each second frequency domain resource.

[0295] Optionally, multiple second frequency domain resources can correspond to one scrambling identifier, or one scrambling identifier can correspond to multiple second frequency domain resources. Assuming the first BWP includes 8 second frequency domain resources, the second parameter can indicate 5 scrambling identifiers. For example, second frequency domain resource 1 corresponds to scrambling identifier 1; second frequency domain resource 2 corresponds to scrambling identifier 2; second frequency domain resources 3 and 4 correspond to scrambling identifier 3; second frequency domain resource 5 corresponds to scrambling identifier 4; and second frequency domain resources 6, 7, and 8 correspond to scrambling identifier 5.

[0296] For example, referring to Figure 16, assuming the first reference signal sequence within BWP 0 corresponds to one scrambling identifier, i.e., scrambling identifier 0, and that BWP 0 includes one second frequency domain resource, i.e., second frequency domain resource 0, then the first reference signal sequence within BWP 0 can be determined (or generated) based on scrambling identifier 0. Assuming the first reference signal sequence within BWP 1 corresponds to two scrambling identifiers, the first reference signal sequence within BWP 1 can consist of two parts: the third reference signal sequence of second frequency domain resource 1 and the third reference signal sequence of second frequency domain resource 2. For example, second frequency domain resource 1 corresponds to scrambling identifier 1, and second frequency domain resource 2 corresponds to scrambling identifier 2. Then, the third reference signal sequence of second frequency domain resource 1 can be determined (or generated) based on scrambling identifier 1, and the third reference signal sequence of second frequency domain resource 2 can be determined (or generated) based on scrambling identifier 2.

[0297] It is understood that the first reference signal sequence and the third reference signal sequence in Figure 16 can be DMRS sequences or CSI-RS sequences, and this application embodiment does not limit them.

[0298] Understandably, the first device can determine (generate) a reference signal sequence (such as a first reference signal sequence, a third reference signal sequence, etc.) on the frequency domain resource corresponding to the scrambling identifier based on the scrambling identifier, so as to ensure that the reference signals transmitted in different BWPs are mutually orthogonal and avoid interference.

[0299] When the first device is a terminal and the second device is a network device, the network device can also send fourth information to the terminal, and the terminal receives the fourth information from the network device. This fourth information can be used to indicate M scrambling identifiers. M is a positive integer greater than or equal to 2. It can be assumed that the first frequency domain resource set is configured with a total of M scrambling identifiers, and the aforementioned Q scrambling identifiers are the Q scrambling identifiers among these M scrambling identifiers. For example, the fourth information can be carried through higher-layer signaling, such as through RRC signaling or a MAC control element (CE). For example, the network device can configure 4 scrambling identifiers for DMRS based on the first frequency domain resource set, such as scrambling identifier 0, scrambling identifier 1, scrambling identifier 2, and scrambling identifier 3. The network device can indicate to the terminal through physical layer signaling (such as DCI) the scrambling identifiers that may be used to generate DMRS on the first BWP, that is, indicate some or all of the 4 scrambling identifiers. The first BWP may include multiple second frequency domain resources, such as multiple frequency bands, multiple carriers, or multiple sub-bands. Different second frequency domain resources can use different scrambling identifiers. Alternatively, some second-frequency domain resources may use the same scrambling identifier. Taking four scrambling identifiers as an example, two bits can be used to indicate the scrambling identifiers required by the second-frequency domain resources in generating the DMRS sequence.

[0300] For example, a network device can configure four scrambling identifiers for CSI-RS based on a first set of frequency domain resources, such as scrambling identifier 5, scrambling identifier 6, scrambling identifier 7, and scrambling identifier 8. The network device can indicate to the terminal via higher-layer signaling (such as RRC signaling) the scrambling identifiers that may be used on the first BWP to generate CSI-RS, i.e., indicating some or all of the four scrambling identifiers. A CSI-RS resource can include multiple second-frequency domain resources, such as multiple frequency bands, multiple carriers, or multiple sub-bands. Different second-frequency domain resources can use different scrambling identifiers. Alternatively, some second-frequency domain resources may use the same scrambling identifier. Taking four scrambling identifiers as an example, 2 bits can be used to indicate the scrambling identifiers required by the second-frequency domain resources to generate the CSI-RS sequence.

[0301] For example, a network device can indicate the scrambling identifier of one or more CSI-RS sequences corresponding to a CSI-RS resource in a CSI-RS resource configuration information. For instance, if a CSI-RS resource includes two second frequency domain resources, a scrambling identifier for a CSI-RS sequence can be configured for each second frequency domain resource. That is, the network device can configure scrambling identifiers for CSI-RS sequences for each of the one or more second frequency domain resources included in the CSI-RS resource.

[0302] The embodiments of this application are applicable to situations where scrambling identifiers are configured for the entire first frequency domain resource set. This allows for flexible indication of scrambling identifiers corresponding to different frequency domain resources, thereby improving communication efficiency and avoiding mutual interference between signals from different users under multi-user scheduling.

[0303] In some examples, the scrambling identifier can be associated with a first frequency domain resource. For instance, the scrambling identifier can be configured for a first frequency domain resource, meaning it can be configured at the frequency domain resource level. Then, based on the relationship between the second and first frequency domain resources—such as which first frequency domain resource the second frequency domain resource belongs to—the second frequency domain resource can be determined based on the scrambling identifier associated with its respective first frequency domain resource.

[0304] For example, multiple scrambling identifiers can be configured for a first frequency domain resource in a first frequency domain resource set. For instance, multiple scrambling identifiers can be configured for each frequency band, subband, or carrier. Then, the second parameter can be used to indicate R fourth parameters. For example, the fourth parameter can be used to determine the scrambling identifier corresponding to at least one of P second frequency domain resources. Here, R is a positive integer less than or equal to P. Referring to Figure 17, three fourth parameters can be used to indicate the scrambling identifiers corresponding to three second frequency domain resources. Alternatively, two or one fourth parameter can be used to indicate the scrambling identifiers corresponding to three second frequency domain resources. This means that multiple scrambling identifiers corresponding to second frequency domain resources are indicated by a single fourth parameter. The scrambling identifier corresponding to each second frequency domain resource is related to the scrambling identifier configured for the first frequency domain resource. For example, if the network device configures one or more scrambling identifiers for first frequency domain resource 0, and second frequency domain resource 0 is part or all of the frequency domain resources in first frequency domain resource 0, then the scrambling identifier corresponding to second frequency domain resource 0 indicated by the fourth parameter can be one of the one or more scrambling identifiers corresponding to the first frequency domain resource 0. The same applies to the scrambling identifiers corresponding to other second frequency domain resources, and will not be repeated in the embodiments of this application.

[0305] It is understood that the frequency domain resources corresponding to the first reference signal sequence and / or the third reference signal sequence in Figure 17 can be part of the frequency domain resources in BWP.

[0306] Optionally, a second frequency domain resource can correspond to a fourth parameter, or a fourth parameter can correspond to a second frequency domain resource. For example, if the second parameter can indicate P fourth parameters, then each fourth parameter is used to determine the scrambling identifier corresponding to one of the P second frequency domain resources. In other words, the second parameter indicates the scrambling identifier corresponding to each second frequency domain resource in the first BWP. Assuming the first BWP includes 8 second frequency domain resources, then the second parameter can indicate 8 fourth parameters. Each fourth parameter corresponds to one second frequency domain resource and is used to indicate the scrambling identifier corresponding to that second frequency domain resource.

[0307] Referring again to Figure 17, assume that the first frequency domain resource 0 corresponds to two scrambling identifiers, such as scrambling identifier 0 and scrambling identifier 3; assume that the first frequency domain resource 1 corresponds to two scrambling identifiers, such as scrambling identifier 1 and scrambling identifier 4; and assume that the first frequency domain resource 2 corresponds to two scrambling identifiers, such as scrambling identifier 2 and scrambling identifier 5. Then, for the first reference signal sequence on BWP0, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 0 (e.g., scrambling identifier 0) using one fourth parameter. Accordingly, the first reference signal sequence of the second frequency domain resource 0 in BWP0 can be determined (or generated) based on scrambling identifier 0. For the first reference signal sequence on BWP1, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 1 (e.g., scrambling identifier 1) and the scrambling identifier corresponding to the second frequency domain resource 2 (e.g., scrambling identifier 2) by indicating two fourth parameters, respectively. Accordingly, the third reference signal sequence of the second frequency domain resource 1 in BWP 1 can be determined (or generated) based on scrambling identifier 1, and the third reference signal sequence of the second frequency domain resource 2 in BWP 1 can be determined (or generated) based on scrambling identifier 2.

[0308] Optionally, multiple second frequency domain resources can correspond to one fourth parameter, or one fourth parameter can correspond to multiple second frequency domain resources. For example, one fourth parameter corresponds to one scrambling identifier. For instance, some second frequency domain resources may correspond to the same scrambling identifier (or be understood as having the same value for the scrambling identifier). In this case, a fourth parameter can be used to indicate these second frequency domain resources with the same scrambling identifier, thereby saving the resources consumed by the second parameter. In the various embodiments of this application, the value of the scrambling identifier can be understood as a specific identifier value, such as a scrambling ID of 100, where the value of the scrambling ID is 100. The value of the scrambling identifier can be simply referred to as the scrambling identifier.

[0309] Still assuming the first BWP includes 8 second frequency domain resources, then the second parameter can indicate 5 fourth parameters. For example, fourth parameter 1 indicates that second frequency domain resource 1 corresponds to scrambling identifier 1; fourth parameter 2 indicates that second frequency domain resource 2 corresponds to scrambling identifier 2; fourth parameter 3 indicates that second frequency domain resources 3 and 4 correspond to scrambling identifier 3; fourth parameter 4 indicates that second frequency domain resource 5 corresponds to scrambling identifier 4; and fourth parameter 5 indicates that second frequency domain resources 6, 7, and 8 correspond to scrambling identifier 5. It can be understood that the 3rd and 4th frequency domain resources correspond to the same scrambling identifier; and the 6th, 7th, and 8th frequency domain resources correspond to the same scrambling identifier.

[0310] Referring again to Figure 17, assume that the first frequency domain resource 0 corresponds to two scrambling identifiers, such as scrambling identifier 0 and scrambling identifier 3; assume that the first frequency domain resource 1 corresponds to two scrambling identifiers, such as scrambling identifier 1 and scrambling identifier 4; and assume that the first frequency domain resource 2 corresponds to two scrambling identifiers, such as scrambling identifier 0 and scrambling identifier 2. Then, for the first reference signal sequence on BWP0, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 0 (e.g., scrambling identifier 0) using one fourth parameter. Accordingly, the first reference signal sequence of the second frequency domain resource 0 in BWP0 can be determined (or generated) based on scrambling identifier 0. For the first reference signal sequence on BWP1, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 1 (e.g., scrambling identifier 1) and the scrambling identifier corresponding to the second frequency domain resource 2 (e.g., scrambling identifier 0) respectively by indicating two fourth parameters. Accordingly, the third reference signal sequence of the second frequency domain resource 1 in BWP 1 can be determined (or generated) based on scrambling identifier 1, and the third reference signal sequence of the second frequency domain resource 2 in BWP 1 can be determined (or generated) based on scrambling identifier 0. In this example, the fourth parameter indicating the scrambling identifier corresponding to the second frequency domain resource 2 can be the same as the fourth parameter indicating the scrambling identifier corresponding to the second frequency domain resource 0. That is, the total number of fourth parameters remains two.

[0311] Alternatively, suppose the first frequency domain resource 0 corresponds to two scrambling identifiers, such as scrambling identifier 0 and scrambling identifier 3; suppose the first frequency domain resource 1 corresponds to two scrambling identifiers, such as scrambling identifier 1 and scrambling identifier 4; suppose the first frequency domain resource 2 corresponds to two scrambling identifiers, such as scrambling identifier 1 and scrambling identifier 2. Then, for the first reference signal sequence on BWP0, the network device can indicate the scrambling identifier (e.g., scrambling identifier 0) corresponding to the second frequency domain resource 0 through a fourth parameter. Accordingly, the first reference signal sequence of the second frequency domain resource 0 in BWP0 can be determined (or generated) based on scrambling identifier 0. For the first reference signal sequence on BWP1, the network device can indicate the scrambling identifier (e.g., scrambling identifier 1) corresponding to the second frequency domain resource 1 and the scrambling identifier (e.g., scrambling identifier 1) corresponding to the second frequency domain resource 2 through an indication of a fourth parameter. Accordingly, the third reference signal sequence of the second frequency domain resource 1 in BWP 1 can be determined (or generated) based on scrambling identifier 1, and the third reference signal sequence of the second frequency domain resource 2 in BWP 1 can be determined (or generated) based on scrambling identifier 1.

[0312] Optionally, multiple second frequency domain resources can correspond to one fourth parameter, or one fourth parameter can correspond to multiple second frequency domain resources. For example, one fourth parameter can correspond to multiple scrambling identifiers. For example, although some second frequency domain resources correspond to different scrambling identifiers (or can be understood as having different values ​​for the scrambling identifiers), the scrambling identifier numbers can be the same. Optionally, the fourth parameter can indicate the number of the scrambling identifier. In various embodiments of this application, the number of the scrambling identifier can be understood as which scrambling identifier is among the multiple scrambling identifiers configured for the first frequency domain resource. For example, if the number of the scrambling identifier is 2, it indicates the second scrambling identifier among the multiple scrambling identifiers configured for the first frequency domain resource, and the value of the second scrambling identifier can be, for example, 50. For example, the first frequency domain resource corresponding to second frequency domain resource 1 is configured with two scrambling identifiers, such as scrambling identifier A and scrambling identifier B; the first frequency domain resource corresponding to second frequency domain resource 2 is configured with two scrambling identifiers, namely scrambling identifier C and scrambling identifier D. Although the scrambling identifiers are different, both second frequency domain resource 1 and second frequency domain resource 2 may use the first scrambling identifier. For example, second frequency domain resource 1 uses scrambling identifier A, and second frequency domain resource 2 uses scrambling identifier C. Therefore, a fourth parameter can be used to indicate the scrambling identifiers of these two second frequency domain resources. For example, if the fourth parameter indicates that the scrambling identifier number is 1, then both second frequency domain resource 1 and second frequency domain resource 2 use the first scrambling identifier. Optionally, the scrambling identifier number can start from 0 (e.g., 0 represents the first scrambling identifier) ​​or from 1 (e.g., 1 represents the first scrambling identifier), and this application does not limit this.

[0313] Of course, having the same scrambling identifier value does not necessarily mean that the scrambling sequences are the same. For example, different second frequency domain resources may use the same scrambling identifier, but the scrambling sequences corresponding to that scrambling identifier may be different for different second frequency domain resources. This application does not impose any limitations on this.

[0314] Referring again to Figure 17, assume that the first frequency domain resource 0 corresponds to two scrambling identifiers, such as scrambling identifier 0 (the first scrambling identifier of the first frequency domain resource 0) and scrambling identifier 3 (the second scrambling identifier of the first frequency domain resource 0); assume that the first frequency domain resource 1 corresponds to two scrambling identifiers, such as scrambling identifier 1 (the first scrambling identifier of the first frequency domain resource 1) and scrambling identifier 4 (the second scrambling identifier of the first frequency domain resource 1); assume that the first frequency domain resource 2 corresponds to two scrambling identifiers, such as scrambling identifier 2 (the first scrambling identifier of the first frequency domain resource 2) and scrambling identifier 5 (the second scrambling identifier of the first frequency domain resource 2). Then, for the first reference signal sequence on BWP0, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 0 (e.g., the first scrambling identifier, i.e., scrambling identifier 0) through a fourth parameter. Accordingly, the first reference signal sequence of the second frequency domain resource 0 in BWP0 can be determined (or generated) based on scrambling identifier 0. For the first reference signal sequence on BWP1, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 1 (e.g., the second scrambling identifier, i.e., scrambling identifier 4) and the scrambling identifier corresponding to the second frequency domain resource 2 (e.g., the first scrambling identifier, i.e., scrambling identifier 2) respectively by indicating two fourth parameters. Correspondingly, the third reference signal sequence of the second frequency domain resource 1 in BWP1 can be determined (or generated) based on scrambling identifier 4, and the third reference signal sequence of the second frequency domain resource 2 in BWP1 can be determined (or generated) based on scrambling identifier 2. In this example, the fourth parameter indicating the scrambling identifier corresponding to the second frequency domain resource 2 can be the same fourth parameter as the fourth parameter indicating the scrambling identifier corresponding to the second frequency domain resource 0. That is, the total number of fourth parameters remains two.

[0315] Alternatively, suppose the first frequency domain resource 0 corresponds to two scrambling identifiers, such as scrambling identifier 0 (the first scrambling identifier of the first frequency domain resource 0) and scrambling identifier 3 (the second scrambling identifier of the first frequency domain resource 0); suppose the first frequency domain resource 1 corresponds to two scrambling identifiers, such as scrambling identifier 1 (the first scrambling identifier of the first frequency domain resource 1) and scrambling identifier 4 (the second scrambling identifier of the first frequency domain resource 1); suppose the first frequency domain resource 2 corresponds to two scrambling identifiers, such as scrambling identifier 2 (the first scrambling identifier of the first frequency domain resource 2) and scrambling identifier 5 (the second scrambling identifier of the first frequency domain resource 2). Then, for the first reference signal sequence on BWP0, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 0 (e.g., the first scrambling identifier, i.e., scrambling identifier 0) through a fourth parameter. Accordingly, the first reference signal sequence of the second frequency domain resource 0 in BWP0 can be determined (or generated) based on scrambling identifier 0. For the first reference signal sequence on BWP1, the network device can indicate the scrambling identifier corresponding to the second frequency domain resource 1 (e.g., the second scrambling identifier, i.e., scrambling identifier 4) and the scrambling identifier corresponding to the second frequency domain resource 2 (e.g., the second scrambling identifier, i.e., scrambling identifier 5) by indicating a fourth parameter. Accordingly, the third reference signal sequence of the second frequency domain resource 1 in BWP1 can be determined (or generated) based on scrambling identifier 4, and the third reference signal sequence of the second frequency domain resource 2 in BWP1 can be determined (or generated) based on scrambling identifier 5.

[0316] In some examples, it is assumed that the first BWP includes three second frequency domain resources, such as three frequency bands, three carriers, or three sub-bands. Different scrambling identifiers can be configured for the first frequency domain resources corresponding to each second frequency domain resource. For example, the first frequency domain resource 0 corresponding to second frequency domain resource 0 is configured with scrambling identifiers 00 and 01; the first frequency domain resource 1 corresponding to second frequency domain resource 1 is configured with scrambling identifiers 10 and 11; and the first frequency domain resource 2 corresponding to second frequency domain resource 2 is configured with scrambling identifiers 20 and 21. The network device can instruct the terminal via signaling (such as higher-layer signaling or physical-layer signaling) which scrambling identifiers might be used to generate the first reference signal sequence from the second frequency domain resources in the first BWP. One approach is for the network device to instruct, via signaling (such as higher-layer signaling or physical-layer signaling), that second frequency domain resources 0, 1, and 2 all use the first scrambling identifier, or all use the second scrambling identifier. Another approach is for the network device to instruct the second frequency domain resource 0 to use the first scrambling identifier, the second frequency domain resource 1 to use the second scrambling identifier, and the second frequency domain resource 2 to use the first scrambling identifier via signaling (such as higher-layer signaling or physical-layer signaling). In other examples, the scrambling identifiers configured for some first frequency domain resources may be partially or entirely the same as those configured for other first frequency domain resources, allowing for situations where the scrambling identifiers corresponding to some second frequency domain resources are identical during the indicative process. This application does not limit this approach.

[0317] It is understood that the aforementioned second frequency domain resource can be either a DMRS frequency domain resource or a CSI-RS frequency domain resource, and this application embodiment does not limit it. For example, a DMRS sequence on a BWP can correspond to multiple scrambling identifiers; or, a CSI-RS sequence of at least one CSI-RS resource in a BWP can correspond to multiple scrambling identifiers.

[0318] The embodiments of this application are applicable to situations where scrambling identifiers are configured separately for each frequency domain resource. This allows for flexible indication of the scrambling identifiers corresponding to different frequency domain resources, thereby improving communication efficiency and avoiding mutual interference between signals from different users under multi-user scheduling.

[0319] In some other examples, the second parameter can be used to indicate a first scrambling identifier. This first scrambling identifier can also be called a target scrambling identifier, etc., and this application embodiment does not limit this. The first scrambling identifier can correspond to a target frequency domain resource among P second frequency domain resources. For example, the target frequency domain resource can be at least one of the P second frequency domain resources. A second offset can exist between the second scrambling identifier and the first scrambling identifier. For example, the second scrambling identifier can correspond to other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource. That is, the first device can determine the scrambling identifier corresponding to other second frequency domain resources among the P second frequency domain resources besides the target frequency domain resource based on the first scrambling identifier and the second offset. In other examples, the target frequency domain resource can also be called a third frequency domain resource, etc., and this application embodiment does not limit this.

[0320] For example, the second parameter can indicate a first scrambling identifier. For instance, this first scrambling identifier could be a scrambling identifier corresponding to one or more second frequency domain resources in the first BWP. For the scrambling identifiers corresponding to the remaining second frequency domain resources (i.e., second scrambling identifiers), there can be a certain offset from the first scrambling identifier, such as a second offset. Then, the first device can determine the scrambling identifiers corresponding to the remaining second frequency domain resources based on the second offset. It is understood that the second offset can be an offset between the values ​​of the scrambling identifiers; or, the second offset can also be an offset between the numbers of the scrambling identifiers. For the case where the second offset is an offset between the numbers of the scrambling identifiers, the values ​​of the scrambling identifiers corresponding to different scrambling identifier numbers can be pre-configured. Alternatively, the association between the offset of the scrambling identifier value and the offset of the scrambling identifier number can be pre-configured, as well as the correspondence between the scrambling identifier value and the scrambling identifier number can be pre-configured. This allows the first device to accurately determine the scrambling identifier corresponding to the second frequency domain resource and then generate a first reference signal sequence based on the scrambling identifier.

[0321] The embodiments of this application can flexibly indicate scrambling identifiers for different frequency domain resources by indicating a scrambling identifier and using the offset between scrambling identifiers, thus saving the resource consumption caused by the second parameter.

[0322] The aforementioned second offset can be obtained using at least one of the following methods:

[0323] Method 1:

[0324] In some examples, the first information may include a fifth parameter, which can be used to determine the second offset. That is, the second offset may be carried in the first information and indicated together with the second parameter.

[0325] Method 2:

[0326] The first device can acquire third information, which is used to indicate the second offset. For example, if the first device is a terminal and the second device is a network device, the network device can send the third information. Correspondingly, the terminal can receive the third information. This third information can be used to indicate the second offset.

[0327] For example, if the first device is a network device, that network device can generate third-party information on its own. In some examples, the network device can send this generated third-party information.

[0328] Method 3:

[0329] The first device can determine the second offset based on a predefined protocol. In this case, the second offset can be considered to be pre-configured on the first device.

[0330] Of course, the first device can obtain the second offset through one or more of the above methods. When multiple second offsets are obtained using multiple methods, the second offset obtained by a certain method can be selected according to a preset rule, or the multiple second offsets can be processed to obtain a more reasonable second offset, etc. The embodiments of this application do not limit this.

[0331] This application provides various methods for determining the second offset, so as to adopt appropriate methods in different scenarios, accurately indicate the second offset, and thus accurately determine the scrambling identifier corresponding to each frequency domain resource, thereby improving communication quality.

[0332] In some examples, the scrambling identifier described above can be indicated using log2A bits, where A is the number of scrambling identifiers configured in the network device. Of course, it can also be indicated using more or fewer bits; this embodiment of the application does not limit this.

[0333] In some other embodiments, the parameters associated with the first reference signal sequence on the first BWP may include a third parameter. For example, the third parameter may be used to determine the length of the second reference signal sequence. The first reference signal sequence may be a portion of the second reference signal sequence. For instance, the second reference sequence may be considered to be the sequence r() mentioned in the foregoing embodiments. Accordingly, the first reference signal sequence is a portion of the sequence r(). The first device may determine the length of the sequence r() based on the third parameter.

[0334] In some examples, the length of the second reference signal sequence can be the bandwidth of the first frequency domain resource set. That is, the second reference signal sequence can be determined based on the bandwidth of the first frequency domain resource set. The first device selects a portion of the second reference signal sequence as the first reference signal sequence.

[0335] Referring to Figure 18, the first device can determine the length of the second reference signal sequence based on the bandwidth of the first frequency domain resource set, and determine the second reference signal sequence based on that length. Accordingly, the first reference signal sequence on BWP 0 is a partial sequence of the second reference signal sequence. The third reference signal sequence of the second frequency domain resource 1 in BWP 1 is another partial sequence of the second reference signal sequence. The third reference signal sequence of the second frequency domain resource 2 in BWP 1 is yet another partial sequence of the second reference signal sequence.

[0336] For example, the length of the second reference signal sequence can be the bandwidth of any one or more first frequency domain resources. In this case, the second reference signal sequence can be determined based on the bandwidth of the one or more first frequency domain resources. For instance, for the second frequency domain resources included in the first BWP, the first frequency domain resource to which the second frequency domain resource belongs corresponds to a first frequency domain position. And the first frequency domain position is the frequency domain start position of the first frequency domain resource. Then, the first device can determine the second reference signal sequence based on the bandwidth of the first frequency domain resource. Referring to Figure 19, for the second frequency domain resource 2 in BWP 1, the second frequency domain resource 2 belongs to some or all of the frequency domain resources in the first frequency domain resource 2, and assuming that the frequency domain start position of the first frequency domain resource 2 is a first frequency domain position (i.e., a reference point), then the first device can determine the second reference signal sequence 2 based on the bandwidth of the first frequency domain resource 2. Furthermore, based on the offset between the frequency domain position of the second frequency domain resource 2 and the first frequency domain position (i.e., the reference point), and referring to the manner described in Formula 11 above, a portion of the sequence in the second reference signal sequence 2 can be determined as the third reference signal sequence of the second frequency domain resource 2.

[0337] For example, regarding the second frequency domain resource included in the first BWP, the first frequency domain resource to which the second frequency domain resource belongs corresponds to a first frequency domain position. This first frequency domain position is the frequency domain starting position of other first frequency domain resources. Therefore, the first device can determine the second reference signal sequence based on the bandwidth of multiple first frequency domain resources. For example, the bandwidth of these multiple first frequency domain resources is the total bandwidth of the multiple first frequency domain resources sharing the first frequency domain position. Referring to Figure 19, regarding the second frequency domain resource 1 in BWP 1, this second frequency domain resource 1 belongs to some or all of the frequency domain resources in the first frequency domain resource 1. Assuming that the first frequency domain resource 1 and the first frequency domain resource 0 share a first frequency domain position (i.e., a reference point), this first frequency domain position can be the frequency domain starting position of the first frequency domain resource 0. Then, the first device can determine the second reference signal sequence 1 based on the total bandwidth of the first frequency domain resource 0 and the first frequency domain resource 1. Furthermore, based on the offset between the frequency domain position of the second frequency domain resource 1 and the first frequency domain position (i.e., the reference point), and referring to the method described in Formula 11 above, a portion of the sequence in the second reference signal sequence 1 can be determined as the third reference signal sequence of the second frequency domain resource 1. Similarly, for the second frequency domain resource 0 in BWP 0, the second reference signal sequence 1 can be determined by referring to the above method. Furthermore, based on the offset between the frequency domain position of the second frequency domain resource 0 and the first frequency domain position (i.e., the reference point), and referring to the method described in Formula 11 above, a portion of the sequence in the second reference signal sequence 1 can be determined as the first reference signal sequence of the second frequency domain resource 0.

[0338] It can be seen that the first reference signal sequence on BWP 1 can be composed of the third reference signal sequence of the second frequency domain resource 1 in BWP 1 and the third reference signal sequence of the second frequency domain resource 2 in BWP 1. However, the length of the corresponding second reference signal sequence can be different in different processes of determining the third reference signal sequence. For example, in the process of determining the third reference signal sequence of the second frequency domain resource 1 in BWP 1, the second reference signal sequence 1 is determined based on the total bandwidth of the first frequency domain resource 0 and the first frequency domain resource 1 as the length of the second reference signal sequence; while in the process of determining the third reference signal sequence of the second frequency domain resource 2 in BWP 1, the second reference signal sequence 2 is determined based on the bandwidth of the first frequency domain resource 2 as the length of the second reference signal sequence.

[0339] This application provides various possible second reference signal sequence lengths to determine the first reference signal sequence using an appropriate length in different scenarios, thereby improving the system's versatility.

[0340] In the communication method provided in this application embodiment, the first reference signal sequence may be composed of a third reference signal sequence. In some embodiments, the first frequency domain resource set is configured with a first frequency domain location. The first device determines (or generates) a second reference signal sequence based on the bandwidth of the first frequency domain resource set. In this case, the first BWP may include one or more second frequency domain resources. That is, even if the first BWP includes multiple second frequency domain resources, the third reference signal sequence corresponding to each second frequency domain resource is obtained based on the same second reference signal sequence. Therefore, it is not necessary to determine the third reference signal sequence corresponding to each second frequency domain resource separately, but the first reference signal sequence can be determined based on the multiple second frequency domain resources as a whole (of course, the first reference signal sequence can also be regarded as a third reference signal sequence, that is, in this case, the first reference signal sequence and the third reference signal sequence are the same).

[0341] Referring to Figure 18, BWP 0 includes one second frequency domain resource, such as second frequency domain resource 0. Assume the first frequency domain resource set is configured with a first frequency domain position, which is the frequency domain start position of first frequency domain resource 0. The first device can determine a second reference signal sequence based on the bandwidth of the first frequency domain resource set. The first device can determine a third reference signal based on the first frequency domain position 0 and a first offset indicated by a first parameter; this third reference signal sequence is the first reference signal sequence in Figure 18.

[0342] Referring to Figure 20, although BWP 1 includes a second frequency domain resource 1 and a second frequency domain resource 2, assuming the first frequency domain resource set is configured with a first frequency domain position, which is first frequency domain position 0, the second reference signal sequence can be determined based on the bandwidth of both the second frequency domain resource 1 and the second frequency domain resource 2. Then, the first device can determine a third reference signal based on the first frequency domain position 0 and the first offset indicated by the first parameter; this third reference signal sequence is the first reference signal sequence in Figure 20.

[0343] For example, if a first device determines (or generates) a second reference signal sequence based on the bandwidth of one or more first frequency domain resources, the first BWP may include one or more second frequency domain resources. These multiple second frequency domain resources correspond to a first frequency domain position, which is the frequency domain starting position of the bandwidth of the one or more first frequency domain resources, and it can be considered that the one or more first frequency domain resources share this first frequency domain position. This situation is similar to the case described above where the second reference signal sequence is determined (or generated) based on the bandwidth of a set of first frequency domain resources. In this case, the set of first frequency domain resources can be configured with one or more first frequency domain positions. The first frequency domain positions corresponding to the multiple second frequency domain resources belong to one or more first frequency domain positions configured in the set of first frequency domain resources.

[0344] As shown in Figure 21, although BWP 1 includes second frequency domain resource 0 and second frequency domain resource 1, both second frequency domain resources determine the second reference signal sequence based on the total bandwidth of first frequency domain resource 1 and first frequency domain resource 2. Therefore, the first device can determine a third reference signal based on the first frequency domain position 0 and the first offset indicated by the first parameter. This third reference signal sequence is the first reference signal sequence in Figure 21. It can be seen that the first frequency domain resource set shown in Figure 21 is configured with two first frequency domain positions: first frequency domain position 0 (the first frequency domain position required to determine the first reference signal sequence) and first frequency domain position 1. Of course, the first frequency domain resource set can also be configured with only one first frequency domain position 0; this embodiment does not limit this.

[0345] It is understandable that, for a first frequency domain location corresponding to the second frequency domain resource included in the first BWP, the first device can determine a third reference signal sequence. For example, the first device can determine a portion of the second reference signal sequence as the third reference signal sequence based on the first frequency domain location and the first offset indicated by the first parameter, and this third reference signal sequence is also the first reference signal sequence.

[0346] In other embodiments, the first reference signal sequence may be composed of M third reference signal sequences. For example, M is a positive integer greater than or equal to 2 and less than or equal to P. Referring again to the first reference signal sequence of BWP 1 shown in Figures 18 and 19, it may be composed of third reference signal sequences corresponding to multiple second frequency domain resources in BWP 1. For the configuration shown in Figures 18 and 19, the first frequency domain resource set may be configured with one first frequency domain position, or it may be configured with multiple first frequency domain positions; this application embodiment does not limit this.

[0347] It is worth noting that, for BWP 1 shown in Figure 18, in one case, a first reference signal sequence can be directly determined as shown in Figure 20. In another case, for multiple first frequency domain positions, the first parameter indicates the first offset 1 between the second frequency domain resource 1 and the first frequency domain position 0, and the first offset 2 between the second frequency domain resource 2 and the first frequency domain position 1. Referring to Figure 22, the first offset 2 can be 0. In this case, during the determination of the third reference signal corresponding to the second frequency domain resource 2, the frequency domain offset between the first frequency domain position 0 and the first frequency domain position 1 can be known by default. This allows the third reference signal corresponding to the second frequency domain resource 2 to be determined based on the first offset 2 and the first frequency domain position 1, combined with Formula 11.

[0348] For example, for a first frequency domain position, the first parameter indicates the first offset 3 between the second frequency domain resource 1 and the first frequency domain position 0, and the first offset 4 between the second frequency domain resource 2 and the first frequency domain position 0. Then, the first device can still determine two third reference signal sequences from the same second reference signal sequence based on different first offsets. Referring to Figure 23, for different second frequency domain resources, the third reference signal corresponding to each second frequency domain resource can be determined based on different first offsets and the same first frequency domain position, combined with Formula 11.

[0349] It is understood that in various embodiments of this application, the number of third reference signal sequences may be related to the number of first frequency domain positions, the length of the second reference signal sequence, or both the number of first frequency domain positions and the length of the second reference signal sequence.

[0350] This application embodiment can construct a first reference signal sequence by generating multiple third reference signal sequences. Considering that the scrambling identifiers can be different during the generation of the reference signal sequences, the reference signal sequences corresponding to each frequency domain resource can avoid interfering with other signals in multi-user scheduling scenarios, thereby improving communication efficiency.

[0351] In the communication method provided in this application embodiment, the first device may further determine the generation method of the first reference signal sequence, so that the first device determines the first reference signal sequence based on the generation method. Therefore, the method may further include: the first device may further acquire second information. The second information may be used to indicate the generation method of the first reference signal sequence.

[0352] For example, if the first device is a terminal and the second device is a network device, the terminal can receive the second information. Correspondingly, the network device can send the second information.

[0353] For example, if the first device is a network device, the network device can generate the second information itself. In some examples, the network device can also send the generated second information. In some examples, the second information and the first information can be carried by the same signaling or by different signaling; this application does not limit this.

[0354] For example, the first reference signal may be generated based on a single first frequency domain position. In this case, the number of first frequency domain positions is one.

[0355] For example, the generation of the first reference signal may include generating a first reference signal sequence based on N first frequency domain positions. In this case, the number of first frequency domain positions is N.

[0356] For example, the generation of the first reference signal may include generating the first reference signal sequence based on a third reference signal sequence. This can be referred to the description of the foregoing related embodiments, and will not be repeated in the embodiments of this application.

[0357] For example, the generation of the first reference signal may include generating the first reference signal sequence based on M third reference signal sequences. This can be referred to the description of the foregoing related embodiments, and will not be repeated in the embodiments of this application.

[0358] The first device can determine the first reference signal sequence according to the generation method of the first reference signal. The specific process of determining the first reference signal sequence can be referred to the description of the corresponding embodiments above, and will not be repeated in the embodiments of this application.

[0359] The embodiments of this application can also flexibly indicate the generation method of the first reference signal sequence, so as to select a more suitable method to obtain an accurate first reference signal sequence in different scenarios and improve communication performance.

[0360] In some embodiments, the second information may be carried by higher-level signaling, such as by RRC signaling or MAC CE.

[0361] In other embodiments, the second information can be carried by a DCI. For example, it can be carried by a first field in the DCI. In various embodiments of this application, a field can also be called a domain, information field, etc., and this application does not limit the terminology.

[0362] The embodiments of this application can indicate the second information through the first field in the DCI, which can flexibly indicate the generation method of the first reference signal and improve communication efficiency.

[0363] For example, the first field can be the number of antenna ports corresponding to the first reference signal sequence. For instance, if the number of antenna ports indicated by the first field reaches a first threshold, a unified reference signal sequence can be used. This situation can be considered a non-MU scheduling scenario, or a single-user (SU) scheduling scenario. The reason is that when the terminal uses a large number of antenna ports, it can be considered that the terminal is implementing multi-stream communication, and the remaining spatial domain will be relatively small, making it unsuitable for other terminals to use the same time-frequency resource, and therefore unsuitable for MU scheduling. For example, the first threshold can be 2, 4, etc., and this application embodiment does not limit it. Optionally, the first threshold can be predefined by the protocol, or the second device can inform the first device of the first threshold through signaling. For example, the network device informs the terminal of the first threshold through signaling.

[0364] The "unified reference signal sequence" mentioned above can be considered as the first BWP determining the first reference signal sequence using CRB 0 of the first frequency domain resource set as the first frequency domain position. The specific process for determining the reference signal can be found in relevant technical implementations, and will not be elaborated upon in this application's embodiments.

[0365] For example, the first field can be the number of flows corresponding to the first reference signal sequence. For instance, if the number of flows indicated by the first field reaches a second threshold, a unified reference signal sequence can be used. This situation can be considered a non-MU scheduling scenario, or a SU scheduling scenario. For example, the second threshold can be 2, 4, etc., and this application embodiment does not limit it. Optionally, the second threshold can be predefined by the protocol, or the second device can inform the first device of the second threshold through signaling. For example, the network device informs the terminal of the second threshold through signaling.

[0366] For example, the first field can be the number of CDM groups without data. For instance, if the number of CDM groups without data indicated by the first field reaches the third threshold, a unified reference signal sequence can be used. This situation can be considered a non-MU scheduling scenario, or a SU scheduling scenario. For example, the third threshold can be the number of DMRS CDM groups occupied by the terminal's DMRS, etc., which is not limited in this application embodiment. The reason is that if the number of DMRS CDM groups without data is the same as the number of CDM groups occupied by the terminal's DMRS, it can be considered that all DMRS CDM groups on this time-frequency resource are used by this terminal, and there are no remaining CDM groups for other terminals to use. In other words, there are no time-frequency resources shared with other terminals in this time-frequency resource, which can also be considered a SU scheduling scenario. Optionally, the third threshold can be predefined by the protocol, or the second device can inform the first device of the third threshold through signaling. For example, the network device informs the terminal of the third threshold through signaling.

[0367] This application provides a way to reuse the first field with various other fields, thereby eliminating the need to configure the first field separately and reducing resource consumption.

[0368] It is worth noting that the frequency domain resources of the first reference signal in the above embodiments of this application and in Figures 10-21 may be part or all of the frequency domain resources in the first BWP. The figures are only an exemplary description, and the embodiments of this application are not limited here.

[0369] Figure 24 is a schematic diagram of another communication method provided by an embodiment of this application.

[0370] This communication process is applicable to, but not limited to, the communication scenarios shown in Figures 1 to 7. This method can be applied to LTE, LTE FDD, LTE TDD, 5G, or NR systems, as well as future communication systems (such as future communication systems), V2X (which can include V2N, vehicle-to-vehicle V2V, V2I, V2P, etc.), LTE-V, vehicle-to-everything (V2V), MTC, IoT, LTE-M, M2M, D2D, and other wireless communication scenarios. The method may include the following steps:

[0371] S201, the second device generates the first information.

[0372] For example, the second device could be a terminal or a network device.

[0373] It is understood that the first information can be referred to the description of the corresponding embodiments in Figures 9 to 23 above, and the embodiments of this application will not be repeated here.

[0374] S202, the second device sends the first information. Correspondingly, the first device receives the first information.

[0375] Optionally, the second device can also send a second message. Accordingly, the first device receives the second message.

[0376] Optionally, the second device may also determine the first reference signal sequence.

[0377] Optionally, the second device may also transmit a first reference signal sequence. Correspondingly, the first device receives the first reference signal sequence. The first reference signal sequence is associated with the first information.

[0378] Optionally, the second device may receive the first reference signal sequence. For example, the first device may transmit the first reference signal sequence. The first reference signal sequence is associated with the first information.

[0379] For the specific implementation process in S201 and S202, please refer to the description of the corresponding embodiments in Figures 9 to 23 above. The embodiments of this application will not be repeated here.

[0380] It is understood that each of the above embodiments of this application can be implemented independently or in combination with each other; there is no absolute subordinate relationship between the embodiments, and they can be combined with each other under any conditions to obtain the corresponding effect.

[0381] It is understood that, in order to achieve the functions in the above embodiments, the network device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the units and method steps described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0382] Figures 25 and 26 are schematic diagrams illustrating possible communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of terminals or network devices in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device can be the RAN node 110 shown in Figure 1, wherein the RAN node can also be referred to as an access network device or a network device. The communication device can also be a module (such as a chip) applied to a network device. The communication device can be the terminal 120 shown in Figure 1, and the communication device can also be a module (such as a chip) applied to the terminal.

[0383] In this embodiment, the device for implementing the terminal's functions can be a terminal itself, or a device capable of supporting the terminal in implementing those functions, such as a chip system. This device can be installed in the terminal or used in conjunction with the terminal. Similarly, the device for implementing the network device's functions can be a network device, or a device capable of supporting the network device in implementing those functions, such as a chip system. This device can be installed in the network device or used in conjunction with the network device.

[0384] In this embodiment of the application, the chip system may be composed of chips, or it may include chips and other discrete devices.

[0385] As shown in Figure 25, the communication device 2500 includes a processing unit 2510 and a transceiver unit 2520. The communication device 2500 is used to implement the functions of the terminal or network device in the method embodiments shown in Figures 9 and 24 above.

[0386] When the communication device 2500 is used to implement the functions of the terminal in the method embodiment shown in FIG9: the processing unit 2510 is used to acquire first information. The processing unit 2510 is also used to determine a first reference signal sequence based on the first information. The communication device 2500 may further include: a transceiver unit 2520 used to perform operations related to sending and receiving, which is not limited in this application embodiment.

[0387] When the communication device 2500 is used to implement the functions of the network device in the method embodiment shown in FIG9: the processing unit 2510 is used to generate first information. The transceiver unit 2510 is used to send the first information.

[0388] For a more detailed description of the processing unit 2510 and the transceiver unit 2520, please refer to the relevant description of the method embodiments shown in Figures 9 and 24.

[0389] As shown in Figure 26, the communication device 2600 includes a processor 2610 and an interface circuit 2620. The processor 2610 and the interface circuit 2620 are coupled together. It is understood that the interface circuit 2620 can be a transceiver or an input / output interface. Optionally, the communication device 2600 may also include a memory 2630 for storing instructions executed by the processor 2610, or storing input data required by the processor 2610 to execute instructions, or storing data generated after the processor 2610 executes instructions. Sometimes, the interface circuit 2620 can also be understood as part of the processor 2610, in which case the communication device 2600 includes the processor 2610.

[0390] When the communication device 2600 is used to implement the methods shown in FIG9 and FIG24, the processor 2610 is used to implement the functions of the processing unit 2510, and the interface circuit 2620 is used to implement the functions of the transceiver unit 2520.

[0391] When the aforementioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal receiving information from a network device can be understood as the information being first received by other modules (such as an RF module or antenna) within the terminal, and then sent to the terminal chip by these modules. The terminal chip sending information to a network device can be understood as the information being forwarded to other modules (such as an RF module or antenna) within the network device, and then sent back to the network device by these modules.

[0392] When the aforementioned communication device is a chip used in a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from the terminal, which can be understood as the information being first received by other modules (such as an RF module or antenna) in the network device, and then sent to the network device chip by these modules. The network device chip sends information to the terminal, which can be understood as the information being sent down to other modules (such as an RF module or antenna) in the terminal, and then sent back to the terminal by these modules.

[0393] In this application, entity A sends information to entity B, either directly or indirectly through other entities. Similarly, entity B receives information from entity A, either directly or indirectly through other entities. Entities A and B can be RAN nodes or terminals, or modules within RAN nodes or terminals. Information transmission and reception can be between RAN nodes and terminals, such as between a base station and a terminal; between two RAN nodes, such as between a CU and a DU; or between different modules within a single device, such as between a terminal chip and other modules of the terminal, or between a base station chip and other modules of the base station.

[0394] It is understood that the processor in the embodiments of this application can be a central processing unit (CPU), or one or more of other general-purpose processors, digital signal processors (DSPs), microprocessor units (MPUs), microcontroller units (MCUs), graphics processing units (GPUs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), artificial intelligence processors (AI processors), or neural processing units (NPUs); or, the processor mentioned in the embodiments of this application can be application-specific integrated circuits (ASICs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components (or parts), or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor, etc.

[0395] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in memory, such as volatile memory and / or non-volatile memory. The non-volatile memory can be flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), or electrically erasable programmable read-only memory (EEPROM). The volatile memory can be a cache or random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes a variety of forms, such as 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). The memory can also be in registers, hard disks, portable hard disks, compact disc (CD) ROMs, or any other form of storage medium well known in the art.

[0396] 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. An exemplary storage medium is coupled to the processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a base station or terminal. The processor and storage medium can also exist as discrete components in a base station or terminal.

[0397] 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 programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless 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 medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0398] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology 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.

[0399] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0400] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0401] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0402] The terms "first" and "second," etc., used in the specification and drawings of the embodiments of this application are used to distinguish different objects or to distinguish different processing of the same object. The terms "first" and "second," etc., can distinguish identical or similar items with substantially the same function and effect. For example, "first device" and "second device" are merely to distinguish different devices and do not limit their order. Those skilled in the art will understand that the terms "first" and "second," etc., do not limit the quantity or execution order, and that "first" and "second," etc., do not necessarily imply that they are different.

[0403] Furthermore, the terms "comprising" and "having," and any variations thereof, used in the description of the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0404] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0405] It is understood that the term "embodiment" used throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of the embodiments of this application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It is understood that in the various embodiments of the embodiments of this application, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0406] It is understood that in the embodiments of this application, "...when" and "if" both refer to the corresponding processing that will be carried out under certain objective circumstances, and are not limited to a time, nor do they require a judgment action during implementation, nor do they imply any other limitations.

[0407] It is understood that some optional features in the embodiments of this application can be implemented independently in certain scenarios without relying on other features, such as the current solution on which they are based, to solve the corresponding technical problems and achieve the corresponding effects. Alternatively, they can be combined with other features as needed in certain scenarios. Correspondingly, the apparatus given in the embodiments of this application can also implement these features or functions, which will not be elaborated here.

[0408] In the embodiments of this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, and in the various implementation methods / methods / implementations within each embodiment, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the various implementation methods / methods / implementations within each embodiment are consistent and can be mutually referenced. The technical features in different embodiments and the various implementation methods / methods / implementations within each embodiment can be combined to form new embodiments, implementation methods, methods, or implementation approaches based on their inherent logical relationships. The following descriptions of the embodiments of this application do not constitute a limitation on the scope of protection of the embodiments of this application.

Claims

1. A communication method characterized by comprising: The method comprises: obtaining first information, wherein the first information is used to indicate parameters related to a first reference signal sequence on a first bandwidth part (BWP), the first BWP belongs to a first frequency domain resource set, the first frequency domain resource set comprises K first frequency domain resources, the first BWP comprises P second frequency domain resources, the second frequency domain resources are part or all of the first frequency domain resources, K is a positive integer greater than or equal to 2, and P is a positive integer less than or equal to K; determining the first reference signal sequence according to the first information.

2. A communication method characterized by comprising: The method comprises: generating first information, wherein the first information is used to indicate parameters related to a first reference signal sequence on a first bandwidth part (BWP), the first BWP belongs to a first frequency domain resource set, the first frequency domain resource set comprises K first frequency domain resources, the first BWP comprises P second frequency domain resources, the second frequency domain resources are part or all of the first frequency domain resources, K is a positive integer greater than or equal to 2, and P is a positive integer less than or equal to K; sending the first information.

3. The method according to claim 1 or 2, characterized in that, The parameters related to the first reference signal sequence on the first BWP comprise at least one of the following parameters: a first parameter, wherein the first parameter is used to determine a first offset of a frequency domain starting position of the first reference signal sequence relative to a first frequency domain position; or a second parameter, wherein the second parameter is used to determine a scrambling identifier, and the scrambling identifier is used to determine the first reference signal sequence; or a third parameter, wherein the third parameter is used to determine a length of a second reference signal sequence, and the first reference signal sequence is part of the second reference signal sequence.

4. The method of claim 3, wherein, The number of the first frequency domain positions is 1; or the number of the first frequency domain positions is N, wherein N is a positive integer greater than or equal to 2 and less than or equal to P.

5. The method according to claim 3 or 4, characterized in that, The second parameter is used to indicate Q scrambling identifiers related to the first frequency domain resource set, wherein Q is a positive integer less than or equal to P.

6. The method according to claim 3 or 4, characterized in that, The second parameter is used to indicate R fourth parameters, wherein the fourth parameters are used to determine scrambling identifiers corresponding to at least one second frequency domain resource, and R is a positive integer less than or equal to P.

7. The method according to claim 3 or 4, characterized in that, The second parameter is used to indicate one first scrambling identifier corresponding to a target frequency domain resource in the P second frequency domain resources, wherein the target frequency domain resource is at least one second frequency domain resource in the P second frequency domain resources, and there is a second offset between the first scrambling identifier and a second scrambling identifier corresponding to other second frequency domain resources in the P second frequency domain resources except the target frequency domain resource.

8. The method according to any one of claims 3-7, characterized in that, The length of the second reference signal sequence is a bandwidth of the first frequency domain resource set; or the length of the second reference signal sequence is a bandwidth of any one or more first frequency domain resources.

9. The method according to any one of claims 3-8, characterized in that, The first reference signal sequence is composed of one third reference signal sequence; or, the first reference signal sequence is composed of M third reference signal sequences, where M is a positive integer greater than or equal to 2 and less than or equal to P.

10. The method according to any one of claims 3-9, characterized in that, The first reference signal sequence includes at least one of the following sequences: A demodulation reference signal (DMRS) sequence; or A channel state information reference signal (CSI-RS) sequence.

11. The method of claim 10, wherein, The first reference signal sequence includes the CSI-RS sequence, and the first offset includes a third offset and a fourth offset, where the third offset is an offset of a frequency domain starting position of the first BWP relative to a first frequency domain position, and the fourth offset is an offset of a frequency domain resource of the CSI-RS sequence relative to the frequency domain starting position of the first BWP, and the frequency domain resource of the CSI-RS sequence belongs to the P second frequency domain resources.

12. The method of claim 1, wherein, The method further includes: Obtaining second information, where the second information is used to indicate a generation manner of the first reference signal sequence. The generation manner of the first reference signal includes at least one of the following: Generating the first reference signal sequence based on one first frequency domain position; Generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; Generating the first reference signal sequence based on one third reference signal sequence; or Generating the first reference signal sequence based on M third reference signal sequences, where M is a positive integer greater than or equal to 2 and less than or equal to P.

13. The method of claim 2, wherein, The method further includes: Transmitting second information, where the second information is used to indicate a generation manner of the first reference signal sequence. The generation manner of the first reference signal includes at least one of the following: Generating the first reference signal sequence based on one first frequency domain position; Generating the first reference signal sequence based on N first frequency domain positions, where N is a positive integer greater than or equal to 2 and less than or equal to P; Generating the first reference signal sequence based on one third reference signal sequence; or Generating the first reference signal sequence based on M third reference signal sequences, where M is a positive integer greater than or equal to 2 and less than or equal to P.

14. The method according to claim 12 or 13, characterized in that, The second information is carried in a first field in a downlink control information (DCI).

15. The method of claim 14, wherein, The first field is a field of a number of antenna ports corresponding to the first reference signal sequence; or The first field is a field of a number of streams corresponding to the first reference signal sequence; or The first field is a field of a number of code division multiplexing (CDM) groups without data.

16. A communications device, characterized by A module for performing the method of any one of claims 1-15.

17. A communications device, characterized by A processor and an interface circuit for receiving signals from other communication devices and transmitting signals to the processor or sending signals from the processor to other communication devices, and the processor is used to implement the method of any one of claims 1-15 through a logic circuit or an execution code instruction.

18. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method of any one of claims 1-15.

19. A computer program product comprising computer programs or instructions, characterized in that, The computer program or instructions, when executed by a communication device, implement the method of any one of claims 1-15.

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