Signal transmission method and apparatus, and storage medium

Abstract

Provided in the present disclosure are a signal transmission method and apparatus, and a storage medium. In the present disclosure, configuration is performed on a sensing reference signal sent to a sensing object, such that a sub-carrier spacing between sub-carriers occupied by the sensing reference signal on a first OFDM symbol is smaller than a sub-carrier spacing between sub-carriers occupied thereby on a second OFDM symbol, and thus the first OFDM symbol with the smaller sub-carrier spacing can support the increasing of the maximum range of a measured delay. Moreover, configuration is performed on the sensing reference signal sent to the sensing object, such that a symbol interval between OFDM symbols occupied by the sensing reference signal on a first sub-carrier is smaller than a symbol interval between OFDM symbols occupied thereby on a second sub-carrier, such that the first sub-carrier with the smaller OFDM symbol interval can support the increasing of the maximum range of a measured Doppler frequency. Thus, the overheads of the sensing reference signal can be reduced while making the sensing reference signal support the maximum range of a measured delay and the maximum range of a measured Doppler frequency.

Description

Signal transmission methods and devices, storage media Technical Field

[0001] This disclosure relates to the field of communications, and in particular to a signal transmission method, apparatus, and storage medium. Background Technology

[0002] The 5G system supports a variety of reference signals (RS), such as Channel State Information Reference Signal (CSI-RS), Demodulation Reference Signal (DMRS), Positioning Reference Signal (PRS), and Sounding Reference Signal (Sounding RS).

[0003] When sensing a target using wireless signals, a sensing reference signal (RS) can be sent to the target. By measuring the signal reflected back from the target, information such as the time delay, angle, and Doppler frequency of the multipath components can be obtained. In related technologies, to improve the accuracy of the sensing measurement's time delay and Doppler frequency, a significant amount of frequency and time resources are typically allocated to the sensing reference signal, resulting in a large overhead.

[0004] Summary of the Invention

[0005] In order to reduce the overhead of the sensing reference signal while taking into account the maximum time delay range and the maximum Doppler frequency range supported by the sensing reference signal, embodiments of this disclosure provide a signal transmission method, apparatus, and storage medium.

[0006] According to a first aspect of the present disclosure, a signal transmission method is provided, the method comprising:

[0007] A sensing reference signal is transmitted to the sensing target, wherein the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the first orthogonal frequency division multiplexing (OFDM) symbol is smaller than the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the second OFDM symbol, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier is smaller than the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier.

[0008] Wherein, the first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensed reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensed reference signal other than the first OFDM symbol; the first subcarrier is at least a portion of the subcarriers used to transmit the sensed reference signal, and the second subcarrier is the subcarrier used to transmit the sensed reference signal other than the first subcarrier.

[0009] According to a second aspect of the present disclosure, a signal transmission method is provided, the method comprising:

[0010] A first communication device transmits a sensing reference signal to a sensing target. The subcarrier spacing of the subcarriers occupied by the sensing reference signal on a first OFDM symbol is smaller than the subcarrier spacing of the subcarriers occupied by the sensing reference signal on a second OFDM symbol. Furthermore, the symbol spacing of the OFDM symbols occupied by the sensing reference signal on the first subcarrier is smaller than the symbol spacing of the OFDM symbols occupied by the sensing reference signal on the second subcarrier. The first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensing reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensing reference signal excluding the first OFDM symbol. The first subcarrier is at least a portion of the subcarriers used for transmitting the sensing reference signal, and the second subcarrier is the subcarrier used for transmitting the sensing reference signal excluding the first subcarrier.

[0011] The sensing target reflects a sensing signal to the second communication device based on the sensing reference signal transmitted to the sensing target;

[0012] The second communication device receives the signal reflected by the sensing target based on the sensing reference signal.

[0013] According to a third aspect of the present disclosure, a communication device is provided, comprising:

[0014] The transceiver module is configured to transmit a sensing reference signal to a sensing target, wherein the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the first orthogonal frequency division multiplexing (OFDM) symbol is smaller than the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the second OFDM symbol, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier is smaller than the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier.

[0015] Wherein, the first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensed reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensed reference signal other than the first OFDM symbol; the first subcarrier is at least a portion of the subcarriers used to transmit the sensed reference signal, and the second subcarrier is the subcarrier used to transmit the sensed reference signal other than the first subcarrier.

[0016] According to a fourth aspect of the present disclosure, a communication device is provided, comprising:

[0017] One or more transceivers;

[0018] The communication device is used to perform the signal transmission method as described in the first aspect above.

[0019] According to a fifth aspect of the present disclosure, a storage medium is provided that stores instructions that, when executed on a communication device, cause the communication device to perform the signal transmission method as described in the first aspect above.

[0020] In this embodiment of the disclosure, by configuring the sensing reference signal sent to the sensing target such that the subcarrier spacing of the subcarriers occupied on the first OFDM symbol is smaller than the subcarrier spacing of the subcarriers occupied on the second OFDM symbol, the first OFDM symbol with a smaller subcarrier spacing can support an increased maximum range of time delay measurement. Furthermore, by configuring the sensing reference signal sent to the sensing target such that the symbol spacing of the OFDM symbol occupied on the first subcarrier is smaller than the symbol spacing of the OFDM symbol occupied on the second subcarrier, the first subcarrier with a smaller OFDM symbol spacing can support an increased maximum range of measured Doppler frequencies. Thus, while taking into account both the maximum time delay range and the maximum Doppler frequency range supported by the sensing reference signal, the overhead of the sensing reference signal can be reduced.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0023] Figure 1 is a schematic diagram of a communication method according to an embodiment of the present disclosure.

[0024] Figure 2 is a schematic diagram of a wireless frame structure according to an embodiment of the present disclosure.

[0025] Figure 3A is a schematic diagram illustrating a periodically allocated sensing signal according to an embodiment of the present disclosure.

[0026] Figure 3B is a schematic diagram illustrating another periodic allocation of sensing signals according to an embodiment of the present disclosure.

[0027] Figure 4 is an interactive schematic diagram of a signal transmission method according to an embodiment of the present disclosure.

[0028] Figure 5A is a schematic diagram of a wireless intra-frame sensing reference signal according to an embodiment of the present disclosure.

[0029] Figure 5B is a schematic diagram of another wireless intra-frame sensing reference signal according to an embodiment of the present disclosure.

[0030] Figure 6 is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure.

[0031] Figure 7 is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure.

[0032] Figure 8A is a schematic diagram of the structure of the communication device 8100 proposed in an embodiment of this disclosure.

[0033] Figure 8B is a schematic diagram of the structure of chip 8200 proposed in an embodiment of this disclosure. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0035] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of at least one associated listed item.

[0036] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various messages, these messages should not be limited to these terms. These terms are used only to distinguish messages of the same type from one another. For example, without departing from the scope of this disclosure, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0037] This disclosure provides a signal transmission method, apparatus, and storage medium.

[0038] In a first aspect, embodiments of this disclosure provide a signal transmission method, the method comprising:

[0039] A sensing reference signal is transmitted to the sensing target, wherein the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the first orthogonal frequency division multiplexing (OFDM) symbol is smaller than the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the second OFDM symbol, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier is smaller than the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier.

[0040] Wherein, the first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensed reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensed reference signal other than the first OFDM symbol; the first subcarrier is at least a portion of the subcarriers used to transmit the sensed reference signal, and the second subcarrier is the subcarrier used to transmit the sensed reference signal other than the first subcarrier.

[0041] In the above embodiments, by configuring the sensing reference signal sent to the sensing target such that the subcarrier spacing of the subcarriers occupied on the first OFDM symbol is smaller than the subcarrier spacing of the subcarriers occupied on the second OFDM symbol, the first OFDM symbol with a smaller subcarrier spacing can support an increased maximum range of time delay measurement. Furthermore, by configuring the sensing reference signal sent to the sensing target such that the symbol spacing of the OFDM symbol occupied on the first subcarrier is smaller than the symbol spacing of the OFDM symbol occupied on the second subcarrier, the first subcarrier with a smaller OFDM symbol spacing can support an increased maximum range of measured Doppler frequencies. Thus, while taking into account both the maximum time delay range and the maximum Doppler frequency range supported by the sensing reference signal, the overhead of the sensing reference signal can be reduced.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the sensing reference signal occupies all subcarriers on the first OFDM symbol and occupies a portion of the subcarriers on the second OFDM symbol; and, the sensing reference signal occupies all OFDM symbols on the first subcarrier and a portion of the OFDM symbol on the second subcarrier.

[0043] In the above embodiments, by configuring the sensing reference signal to occupy all subcarriers on the first OFDM symbol, the maximum range of time delay measurement is improved. Furthermore, by configuring the sensing reference signal to occupy all OFDM symbols on the first subcarrier, the maximum range of measured Doppler frequencies is improved. Moreover, by occupying a portion of the subcarriers on the second OFDM symbol and a portion of the OFDM symbol on the second subcarrier, the overhead of the sensing reference signal is reduced. This allows the overhead of the sensing reference signal to be reduced while taking into account both the maximum time delay range and the maximum Doppler frequency range supported by the sensing reference signal.

[0044] In conjunction with some embodiments of the first aspect, in some embodiments, for the first subcarriers in which all OFDM symbols are occupied by the sensing reference signal, the first subcarriers are either continuous or discontinuous.

[0045] In the above embodiments, the flexibility and diversity of the sensing reference signal are improved by configuring the sensing reference signal to occupy all OFDM symbols on consecutive first subcarriers, or by configuring the sensing reference signal to occupy all OFDM symbols on discontinuous first subcarriers.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, the sensing reference signal appears periodically in time according to a repetition period;

[0047] For the first OFDM symbol whose subcarriers are occupied by the sensing reference signal, the first OFDM symbol is either continuous within a repetition period, or the first OFDM symbol is discontinuous within a repetition period.

[0048] In the above embodiments, the flexibility and diversity of the sensing reference signal are improved by configuring all subcarriers to be occupied on consecutive first OFDM symbols within one repetition period of the sensing reference signal, or by configuring all subcarriers to be occupied on discontinuous first OFDM symbols within one repetition period of the sensing reference signal.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the first OFDM symbol satisfies a first spacing value, the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the second OFDM symbol satisfies a second spacing value; and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier satisfies a third spacing value, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier satisfies a fourth spacing value.

[0050] Wherein, the first interval value is less than the second interval value, and the third interval value is less than the fourth interval value.

[0051] In the above embodiments, by configuring the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the first OFDM symbol to a smaller first spacing value, and the subcarrier spacing of the subcarrier occupied on the second OFDM symbol to a larger second spacing value, and configuring the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier to a smaller third spacing value, and the symbol spacing of the OFDM symbol occupied on the second subcarrier to a larger fourth spacing value, the overhead of the sensing reference signal can be reduced while taking into account the maximum time delay range and the maximum Doppler frequency range supported by the sensing reference signal.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, the first OFDM symbols of the occupied subcarriers whose subcarrier spacing satisfies the first spacing value are continuous within a repetition period, or the first OFDM symbols of the occupied subcarriers whose subcarrier spacing satisfies the first spacing value are discontinuous within a repetition period.

[0053] The second OFDM symbol whose subcarrier spacing of the occupied subcarrier satisfies the second spacing value is continuous within a repetition period, or the second OFDM symbol whose subcarrier spacing of the occupied subcarrier satisfies the second spacing value is discontinuous within a repetition period.

[0054] In the above embodiments, the flexibility and diversity of the sensing reference signal are improved by configuring subcarriers with smaller intervals to occupy consecutive first OFDM symbols within one repetition period, or by configuring subcarriers with smaller intervals to occupy discontinuous first OFDM symbols within one repetition period. Furthermore, the flexibility and diversity of the sensing reference signal are also improved by configuring subcarriers with larger intervals to occupy consecutive second OFDM symbols within one repetition period, or by configuring subcarriers with larger intervals to occupy discontinuous second OFDM symbols within one repetition period.

[0055] In conjunction with some embodiments of the first aspect, in some embodiments, the first subcarriers of the occupied OFDM symbols whose symbol spacing satisfies the third spacing value are continuous, or the first subcarriers of the occupied OFDM symbols whose symbol spacing satisfies the third spacing value are discontinuous.

[0056] The second subcarrier of the occupied OFDM symbol whose symbol spacing satisfies the fourth spacing value is continuous, or the second subcarrier of the occupied OFDM symbol whose symbol spacing satisfies the fourth spacing value is discontinuous.

[0057] In the above embodiments, the flexibility and diversity of the sensing reference signal are improved by configuring the sensing reference signal to occupy OFDM symbols with smaller intervals on consecutive first subcarriers, or by configuring the sensing reference signal to occupy OFDM symbols with smaller intervals on discontinuous first subcarriers. Furthermore, the flexibility and diversity of the sensing reference signal are improved by configuring the sensing reference signal to occupy OFDM symbols with larger intervals on consecutive second subcarriers, or by configuring the sensing reference signal to occupy OFDM symbols with larger intervals on discontinuous second subcarriers.

[0058] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0059] Resource indication information is sent to the sensing target, the resource indication information indicating time-frequency resources for transmitting the sensing reference signal.

[0060] In the above embodiments, by sending resource indication information to the sensing target, indicating the time-frequency resources used for transmitting the sensing reference signal, the sensing target can determine the time-frequency resources used for transmitting the sensing reference signal according to the resource indication information, so as to realize the allocation of time-frequency resources and thus ensure the legitimacy of the communication process based on the sensing reference signal.

[0061] In conjunction with some embodiments of the first aspect, in some embodiments, the resource indication information is used to indicate any of the following:

[0062] The time-frequency resources of the sensing reference signal on the first OFDM symbol and the time-frequency resources of the sensing reference signal on the first subcarrier;

[0063] The time-frequency resources of the sensing reference signal on the first OFDM symbol and the time-frequency resources of the sensing reference signal on the second OFDM symbol;

[0064] The time-frequency resources of the sensing reference signal on the first subcarrier and the time-frequency resources of the sensing reference signal on the second subcarrier.

[0065] In the above embodiments, resource indication information is provided to indicate multiple possible implementations of time-frequency resources used for transmitting sensing reference signals, so as to provide flexibility in the resource indication process.

[0066] In conjunction with some embodiments of the first aspect, in some embodiments, the signal values ​​corresponding to different indices in the sequence of the sensing reference signal are determined based on the signal values ​​at the corresponding indices in the pseudo-random sequence.

[0067] In the above embodiments, by providing a method for determining the sequence carried by the sensing reference signal, it is ensured that the sequence carried by the sensing reference signal can be determined, thereby ensuring the smooth progress of the measurement process for the sensing target.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, the sequence of the sensing reference signal is as follows:

[0069] Where r() represents the sequence carried by the sensing reference signal, c() represents the pseudo-random sequence, and m represents the index in the sequence.

[0070] In the above embodiments, by providing a possible sequence form of the sequence carried by the sensing reference signal, the sequence carried by the sensing reference signal can be determined according to the provided sequence form.

[0071] In conjunction with some embodiments of the first aspect, in some embodiments, the sequence of the sensing reference signal is initialized within each OFDM symbol, or the sequence of the sensing reference signal is initialized at the beginning of each repetition cycle.

[0072] In the above embodiments, two possible implementations for initializing the sequence of sensing reference signals are provided: initialization within each OFDM symbol or initialization at the beginning of each repetition cycle, so as to improve the flexibility of the sequence initialization process of sensing reference signals.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the sequence of the sensing reference signal is initialized within each OFDM symbol, and the initialization parameters of the pseudo-random sequence include at least identification information, a time slot index within a radio frame, and an OFDM symbol index within a time slot.

[0074] In the above embodiments, when the sequence of the sensing reference signal is initialized in each OFDM symbol, possible initialization parameters of the pseudo-random sequence are provided to ensure that the pseudo-random sequence can be determined when the sequence of the sensing reference signal is initialized in each OFDM symbol, thereby ensuring that the sequence carried by the sensing reference signal can be determined, and thus ensuring the smooth progress of the measurement process for the sensing target.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, the sequence of the sensing reference signal is initialized at the beginning of each repetition period, and the initialization parameters of the pseudo-random sequence include at least identification information.

[0076] In the above embodiments, when the sequence of the sensing reference signal is initialized at the beginning of each repetition period, possible initialization parameters of the pseudo-random sequence are provided to ensure that the pseudo-random sequence can be determined when the sequence of the sensing reference signal is initialized at the beginning of each repetition period, thereby ensuring that the sequence carried by the sensing reference signal can be determined, and thus ensuring the smooth progress of the measurement process for the sensing target.

[0077] In conjunction with some embodiments of the first aspect, in some embodiments, the identification information is a cell identifier, or the identification information is a configured identifier.

[0078] In the above embodiments, possible forms of identification information as initialization parameters of pseudo-random sequences are provided so that multiple types of identification information can be used as initialization parameters of pseudo-random sequences, thereby improving the flexibility of the initialization process of pseudo-random sequences.

[0079] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0080] Receive the signal reflected by the sensing target based on the sensing reference signal;

[0081] Based on the signal reflected by the sensing target, the first parameter of the sensing target is determined.

[0082] In the above embodiments, by receiving the signal reflected by the sensing target based on the sensing reference signal, the first parameter of the sensing target is determined based on the signal reflected by the sensing target, thereby improving the measurement performance of the sensing target.

[0083] In conjunction with some embodiments of the first aspect, in some embodiments, the first parameter includes at least one of a time delay parameter, a Doppler frequency parameter, an angle parameter, and a received power parameter.

[0084] In the above embodiments, multiple first parameters that can be measured based on the signal reflected back from the sensing reference signal by the sensing target are provided, so that relevant parameters of the sensing target can be measured as needed, thereby improving the flexibility of the measurement process for the sensing target.

[0085] Secondly, embodiments of this disclosure provide a signal transmission method, the method comprising:

[0086] A first communication device transmits a sensing reference signal to a sensing target. The subcarrier spacing of the subcarriers occupied by the sensing reference signal on a first OFDM symbol is smaller than the subcarrier spacing of the subcarriers occupied by the sensing reference signal on a second OFDM symbol. Furthermore, the symbol spacing of the orthogonal frequency division multiplexing (OFDM) symbols occupied by the sensing reference signal on the first subcarrier is smaller than the symbol spacing of the OFDM symbols occupied by the sensing reference signal on the second subcarrier. The first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensing reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensing reference signal excluding the first OFDM symbol. The first subcarrier is at least a portion of the subcarriers used for transmitting the sensing reference signal, and the second subcarrier is the subcarrier used for transmitting the sensing reference signal excluding the first subcarrier.

[0087] The sensing target reflects a sensing signal to the second communication device based on the sensing reference signal transmitted to the sensing target;

[0088] The second communication device receives the signal reflected by the sensing target based on the sensing reference signal.

[0089] Thirdly, embodiments of this disclosure provide a communication device, including:

[0090] The transceiver module is configured to transmit a sensing reference signal to a sensing target, wherein the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the first OFDM symbol is smaller than the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the second OFDM symbol, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier is smaller than the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier.

[0091] Wherein, the first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensed reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensed reference signal other than the first OFDM symbol; the first subcarrier is at least a portion of the subcarriers used to transmit the sensed reference signal, and the second subcarrier is the subcarrier used to transmit the sensed reference signal other than the first subcarrier.

[0092] Fourthly, embodiments of this disclosure provide a communication device, comprising:

[0093] One or more transceivers;

[0094] The communication device is used to perform the signal transmission method as described in the first aspect and any embodiment of the first aspect.

[0095] Fifthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the signal transmission method as described in the first aspect and any embodiment thereof.

[0096] In a sixth aspect, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the signal transmission method as described in the first aspect and any embodiment thereof.

[0097] In a seventh aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the signal transmission method as described in the first aspect and any embodiment of the first aspect.

[0098] Eighthly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes interface circuitry configured to perform the signal transmission method as described in the first aspect and any embodiment thereof.

[0099] It is understood that the aforementioned network devices, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0100] This disclosure provides a signal transmission method, apparatus, and storage medium. In some embodiments, the terms "signal transmission method" can be used interchangeably with "information processing method," "communication method," and "method for transmitting a sensed reference signal," and the terms "signal transmission apparatus" can be used interchangeably with "information processing apparatus," "communication apparatus," and "method for transmitting a sensed reference signal," and the terms "information processing system" and "communication system" can be used interchangeably.

[0101] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0102] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0103] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0104] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0105] In the embodiments disclosed herein, "multiple" refers to two or more.

[0106] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0107] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0108] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0109] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields," nor do "first" and "second" restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more; for example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0110] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0111] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0112] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0113] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0114] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0115] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0116] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," etc.

[0117] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0118] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0119] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0120] Figure 1 is a schematic diagram of a scenario illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 1, the communication method provided by the embodiment of the present disclosure can be applied to a scenario including a communication device 101 and a sensing target 102.

[0121] In some embodiments, the communication device 101 includes at least one of user equipment (UE), access network equipment, and core network device.

[0122] In some embodiments, user equipment may also be referred to as a terminal. User equipment includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication capabilities, smart car, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0123] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0124] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0125] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0126] In some embodiments, the core network equipment may be a single device comprising multiple network elements, or it may be multiple devices or a group of devices, each comprising all or part of the multiple network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0127] In some embodiments, the core network equipment may include a first network element, such as an Access and Mobility Management Function (AMF).

[0128] In some embodiments, the first network element is used for user access management and mobility management, but is not limited thereto.

[0129] In some embodiments, the core network device may include a second network element, such as a Session Management Function (SMF).

[0130] In some embodiments, the second network element is used for session management of the control plane and user plane, but is not limited thereto.

[0131] In some embodiments, the core network device may include a third network element, such as a User Plane Function (UPF).

[0132] In some embodiments, the third network element is used for user plane data forwarding, traffic statistics, Quality of Service (QoS) management, etc., but is not limited to these.

[0133] In some embodiments, the core network device may include a fourth network element, such as a Policy Control Function (PCF).

[0134] In some embodiments, the fourth network element is used to implement user control policy management, including but not limited to QoS control, service access control, etc.

[0135] In some embodiments, the core network equipment may include a fifth network element, such as a unified data management function (UDM).

[0136] In some embodiments, the fifth network element is used to implement user subscription data management, roaming control, etc., but is not limited to these.

[0137] In some embodiments, the core network device may include a sixth network element, such as an Authentication Server Function (AUSF).

[0138] In some embodiments, the sixth network element is used to implement user authentication, but is not limited thereto.

[0139] In some embodiments, each of the above network elements can be independent of the core network equipment.

[0140] In some embodiments, each of the above network elements may be part of the core network equipment.

[0141] In some embodiments, the sensing target 102 includes at least one of a person, animal, vehicle, drone, building, fixed facility and mobile device.

[0142] In some embodiments, the mobile device is, for example, a terminal. A terminal includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things (IoT) device, car with communication capabilities, smart car, tablet, computer with wireless transceiver capabilities, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0143] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0144] The following embodiments of this disclosure can be applied to all or some of the entities shown in FIG1, but are not limited thereto. The entities shown in FIG1 are illustrative. The application scenarios of the communication method provided by the embodiments of this disclosure may include all or some of the entities in FIG1, or may include other entities outside of FIG1. ​​The number and form of each entity are arbitrary. Each entity may be physical or virtual. The connection relationship between the entities is illustrative. The entities may not be connected or may be connected. The connection may be in any way, such as direct connection or indirect connection, wired connection or wireless connection.

[0145] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0146] In 5G wireless communication systems, time resources are divided into consecutive radio frames, each with a length of up to 10 milliseconds (ms). Each radio frame can be further divided into 10 subframes. In 5G wireless communication systems, the subcarrier spacing (SCS) can be 2... μ• 15kHz, μ = 0, 1, 2, 3, 4, 5, 6, each subframe can be divided into 2 μ Each time slot.

[0147] In some embodiments, using a general cyclic prefix (CP) length, each time slot can be divided into 14 orthogonal frequency division multiplexing (OFDM) symbols. Referring to Figure 2, which is a schematic diagram of a wireless frame structure according to an embodiment of this disclosure, each time slot is divided into 14 OFDM symbols.

[0148] In some embodiments, an extended CP length is used, and each time slot can be divided into 12 OFDM symbols.

[0149] In 5G wireless communication systems, various RS types can be supported, such as CSI-RS, DMRS, PRS, and SRS. CSI-RS, PRS, and SRS occupy equally spaced subcarriers within an OFDM symbol, and the subcarriers they occupy within an OFDM symbol are allocated according to a certain period. For example, referring to Figures 3A and 3B, Figure 3A is a schematic diagram of a periodically allocated sensing signal according to an embodiment of this disclosure, and Figure 3B is a schematic diagram of another periodically allocated sensing signal according to an embodiment of this disclosure. As shown in Figure 3A, within an OFDM symbol, the interval between subcarriers occupied by RSs can be four subcarriers; as shown in Figure 3B, the same subcarriers of two adjacent OFDM symbols can be code-division multiplexed with multiple RSs, and from a frequency perspective, the interval between subcarriers occupied by RSs is four subcarriers.

[0150] In some embodiments, when sensing a target based on wireless signals, information such as the time delay, angle, and Doppler frequency of its multipath components can be obtained by measuring the sensing signal reflected by the target, thereby determining the position and other parameters of the target.

[0151] If a periodic allocation method is used to allocate RS, it is first necessary to determine the subcarriers occupied by RS within an OFDM symbol, and then the subcarrier pattern is repeatedly allocated according to a certain period to achieve RS allocation.

[0152] In sensing operations, to improve the performance of time delay measurement, the sensing reference signal needs to be configured with a relatively large bandwidth, thereby increasing the minimum resolvable time delay granularity; the subcarrier spacing of the sensing reference signal needs to be relatively dense, thereby increasing the maximum range of measurable time delays. To improve the performance of Doppler frequency measurement, the sensing reference signal needs to be configured with a relatively long time, thereby increasing the minimum resolvable Doppler frequency granularity; the OFDM symbol spacing of the sensing reference signal needs to be relatively dense, thereby increasing the maximum range of measurable Doppler frequencies. If the subcarrier pattern of the sensing reference signal within one OFDM symbol is periodically allocated, the overhead of the sensing reference signal is generally quite large when simultaneously meeting the above requirements.

[0153] In view of this, embodiments of the present disclosure aim to provide a method for allocating sensing reference signals to reduce the overhead of sensing reference signals while taking into account both the maximum time delay range and the maximum Doppler frequency range supported by the sensing reference signals.

[0154] Figure 4 is an interactive schematic diagram of a signal transmission method according to an embodiment of the present disclosure. As shown in Figure 4, the present disclosure relates to a signal transmission method, which includes:

[0155] Step S4101: The first communication device sends resource indication information to the sensing target.

[0156] In some embodiments, the first communication device may be a UE, an access network device (such as a base station), etc., but is not limited thereto.

[0157] In some embodiments, the name of the first communication device is not limited, and it may be, for example, "first sensing transmitter".

[0158] In some embodiments, the sensing target may receive resource indication information sent by the first communication device.

[0159] In some embodiments, resource indication information indicates time-frequency resources used for transmitting sensing reference signals. A detailed description of sensing reference signals will be provided below and will not be repeated here.

[0160] In some embodiments, the name of the resource indication information is not limited, and it may be, for example, "resource indication", "indication information", "first indication information", etc.

[0161] In some embodiments, the name of "information" etc. is not limited to the name described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0162] In some embodiments, resource indication information is used to indicate the time-frequency resources of the sensing reference signal on the first OFDM symbol and the time-frequency resources of the sensing reference signal on the first subcarrier; or, resource indication information is used to indicate the time-frequency resources of the sensing reference signal on the first OFDM symbol and the time-frequency resources of the sensing reference signal on the second OFDM symbol; or, resource indication information is used to indicate the time-frequency resources of the sensing reference signal on the first subcarrier and the time-frequency resources of the sensing reference signal on the second subcarrier. The descriptions of the first OFDM symbol, the second OFDM symbol, the first subcarrier, and the second subcarrier will be detailed below and will not be repeated here.

[0163] In some embodiments, the terms “resource,” “resource set,” “resource group,” “precoding,” “precoder,” “weight,” “precoding weight,” “quasi-co-location (QCL),” “transmission configuration indication (TCI) status,” “spatial relation,” “spatial domain filter,” “transmission power,” “phase rotation,” “antenna port,” “antenna port group,” “layer,” “the number of layers,” “rank,” “beam,” “beam width,” “beam angular degree,” “antenna,” “antenna element,” and “panel” can be used interchangeably.

[0164] In step S4102, the first communication device sends a sensing reference signal to the sensing target.

[0165] In some embodiments, the sensing reference signal is a reference signal used to sense the target. For example, the sensing reference signal is used to determine the time delay, Doppler frequency, angle, reflection intensity, etc. of the target.

[0166] In some embodiments, the name of the sensing reference signal is not limited, and it may be, for example, "reference signal for sensing", "sensing signal", etc.

[0167] In some embodiments, the terms "reference signal (RS)," "synchronization signal (SS)," "synchronization signal block (SSB)," "pilot," and "pilot signal" can be used interchangeably.

[0168] In some embodiments, the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the first OFDM symbol is less than the subcarrier spacing of the subcarrier occupied by the sensing reference signal on the second OFDM symbol, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier is less than the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier.

[0169] In some embodiments, the first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensed reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensed reference signal other than the first OFDM symbol; the first subcarrier is at least a portion of the subcarriers used to transmit the sensed reference signal, and the second subcarrier is the subcarrier used to transmit the sensed reference signal other than the first subcarrier.

[0170] That is, it can be configured such that the subcarrier spacing occupied by the sensing reference signal is relatively small on at least a portion of the OFDM symbols used for sensing the reference signal, while the subcarrier spacing occupied by the sensing reference signal can be relatively large on other OFDM symbols used for sensing the reference signal. Simultaneously, while the OFDM symbol spacing occupied by the sensing reference signal is relatively small on at least a portion of the subcarriers used for sensing the reference signal, the OFDM symbol spacing occupied by the sensing reference signal can be relatively large on other subcarriers used for sensing the reference signal.

[0171] In some embodiments, on a first OFDM symbol, the sensing reference signal occupies all subcarriers, and on a second OFDM symbol, the sensing reference signal occupies a portion of the subcarriers; and, on the first subcarrier, the sensing reference signal occupies all OFDM symbols, and on the second subcarrier, the sensing reference signal occupies a portion of the OFDM symbols.

[0172] That is, on at least a portion of the OFDM symbols used for sensing reference signals, the sensing reference signal occupies all subcarriers. Furthermore, on at least a portion of the subcarriers used for sensing reference signals, the sensing reference signal occupies all OFDM symbols.

[0173] In some embodiments, for the first subcarrier occupying all OFDM symbols of the sensed reference signal, the first subcarrier may be continuous; or, the first subcarrier may be discontinuous, for example, the first subcarrier may be equally spaced subcarriers. Using discontinuous subcarriers facilitates frequency gradation.

[0174] In some embodiments, the sensing reference signal appears periodically in time according to a repetition period. For the first OFDM symbol that occupies all subcarriers of the sensing reference signal, the first OFDM symbol is continuous within a repetition period; or, the first OFDM symbol is discontinuous within a repetition period, for example, the first OFDM symbol is an equally spaced OFDM symbol.

[0175] In some embodiments, terms such as “time,” “moment,” “point in time,” and “time location” can be used interchangeably, as can terms such as “time,” “duration,” “segment,” “time window,” and “window.”

[0176] In the above embodiments, the sensing reference signal occupies all subcarriers on the first OFDM symbol, and only occupies a portion of the subcarriers on the second OFDM symbol; furthermore, the sensing reference signal occupies all OFDM symbols on the first subcarrier, and only a portion of the OFDM symbol on the second subcarrier.

[0177] Referring to Figure 5A, which is a schematic diagram illustrating an intra-frame sensing reference signal according to an embodiment of the present disclosure, as shown in Figure 5A, to maximize the range of delay measurement, within one repetition period P, all subcarriers of the third and fourth OFDM symbols are used for sensing the reference signal, while in other OFDM symbols, one subcarrier out of every four subcarriers is used for sensing the reference signal. Furthermore, in one subcarrier out of every four subcarriers, all OFDM symbols are used for sensing the reference signal, while in other subcarriers, only the third and fourth OFDM symbols are used for sensing the reference signal.

[0178] In some embodiments, the subcarrier spacing of the subcarriers occupied by the sensing reference signal on the first OFDM symbol satisfies a first spacing value, and the subcarrier spacing of the subcarriers occupied by the sensing reference signal on the second OFDM symbol satisfies a second spacing value; furthermore, the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier satisfies a third spacing value, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier satisfies a fourth spacing value. Wherein, the first spacing value is less than the second spacing value, the third spacing value is less than the fourth spacing value, and both the first and third spacing values ​​are positive integers greater than or equal to 1.

[0179] Let the first interval be M1, the second interval be M2, the third interval be N1, and the fourth interval be N2. That is, on at least a portion of the OFDM symbols used for sensing reference signals, the sensing reference signals can be allocated subcarriers according to interval M1, where M1 is greater than or equal to 1. Furthermore, on at least a portion of the subcarriers used for sensing reference signals, the sensing reference signals can be allocated OFDM symbols according to interval N1, where N1 is greater than or equal to 1.

[0180] In some embodiments, the first OFDM symbols with subcarrier spacing satisfying a first spacing value among the occupied subcarriers are continuous within one repetition period; or, the first OFDM symbols with subcarrier spacing satisfying a first spacing value among the occupied subcarriers are discontinuous within one repetition period, for example, they are equally spaced.

[0181] In some embodiments, the second OFDM symbols with subcarrier spacing satisfying a second spacing value among the occupied subcarriers are continuous within one repetition period, or, the second OFDM symbols with subcarrier spacing satisfying a second spacing value among the occupied subcarriers are discontinuous within one repetition period, for example, they are equally spaced.

[0182] That is, at least a part of the OFDM symbols for the sensing reference signal can be continuous or discontinuous within one repetition period P, for example, the OFDM symbols are equally spaced according to an interval N2, where N1 < N2.

[0183] In some embodiments, the first subcarriers with symbol spacing of the occupied OFDM symbols satisfying a third spacing value are continuous; or, the first subcarriers with symbol spacing of the occupied OFDM symbols satisfying a third spacing value are discontinuous, for example, they are equally spaced.

[0184] In some embodiments, the second subcarriers with symbol spacing of the occupied OFDM symbols satisfying a fourth spacing value are continuous; or, the second subcarriers with symbol spacing of the occupied OFDM symbols satisfying a fourth spacing value are discontinuous, for example, they are equally spaced.

[0185] That is, at least a part of the subcarriers for sensing the RS can be continuous or discontinuous, for example, the subcarriers are equally spaced according to an interval M2, where M1 < M2. By adopting discontinuous subcarriers, it is beneficial to obtain frequency grading.

[0186] Through the above embodiments, there can be resource elements (REs) of a common sensing reference signal, that is, there are REs of the sensing reference signal that belong to both the above at least a part of the OFDM symbols for sensing the RS and the above at least a part of the subcarriers for sensing the RS.

[0187] In some embodiments, the terms “resource element (RE)”, “resource block (RB)”, “physical resource block (PRB)”, “sub-carrier group (SCG)”, “resource element group (REG)”, “PRB pair”, “RB pair”, and “sub-carrier” can be used interchangeably.

[0188] Referring to Figure 5B, which is a schematic diagram of another wireless intra-frame sensed reference signal according to an embodiment of the present disclosure, as shown in Figure 5B, to further reduce the overhead of the sensed reference signal, the minimum interval between subcarriers occupied by the sensed reference signal is greater than 1, and the minimum interval between OFDM symbols occupied by the sensed reference signal is also greater than 1. Within one repetition period P, at least a portion of OFDM symbols have one subcarrier for every two subcarriers used for the sensed reference signal, while other OFDM symbols have one subcarrier for every four subcarriers used for the sensed reference signal. Furthermore, on one subcarrier of every four subcarriers, one OFDM symbol is used for the sensed reference signal every two OFDM symbols, while other subcarriers are used for the sensed reference signal only in the third OFDM symbol.

[0189] In some embodiments, the signal values ​​corresponding to different indices in the sequence of the sensing reference signal are determined based on the signal values ​​at the corresponding indices in the pseudo-random sequence.

[0190] For example, the sequence of the sensing reference signal can be seen in the following formula (1):

[0191] Where r() represents the sequence carried by the sensing reference signal, c() represents the pseudo-random sequence, and m represents the index in the sequence.

[0192] In some embodiments, the sequence of the sensing reference signal is initialized within each OFDM symbol, or the sequence of the sensing reference signal is initialized at the beginning of each repetition cycle.

[0193] In some embodiments, the sequence of the sensed reference signal is initialized within each OFDM symbol, and the initialization parameters of the pseudo-random sequence include at least identification information, a time slot index within a radio frame, and an OFDM symbol index within a time slot.

[0194] In some embodiments, the sequence of the sensing reference signal is initialized at the beginning of each repetition cycle, and the initialization parameters of the pseudo-random sequence include at least identification information.

[0195] In some embodiments, the identification information is a cell identifier, or the identification information is a configured identifier, such as a sequence identifier.

[0196] For example, the sequence of the sensing reference signal is initialized within each OFDM symbol, and the initialization value of the pseudo-random sequence can be found in the following formula (2):

[0197] Among them, c init This represents the initial value of the pseudo-random sequence. The sequence ID represents the sequence carried by the sensing reference signal. Indicates the number of OFDM symbols in a time slot. This represents the slot index within a radio frame, where l represents the OFDM symbol index within the slot.

[0198] It should be noted that the above is merely an exemplary form of the initialization value of the pseudo-random sequence and does not constitute a limitation on the embodiments of this disclosure.

[0199] In some embodiments, the terms “slot”, “sub-slot”, “mini-slot”, “symbol”, “frame”, “radio frame”, “subframe”, “symbol”, and “transmission time interval (TTI)” can be used interchangeably.

[0200] In some embodiments, the sensing target may be a person, animal, vehicle, drone, building, fixed facility, or mobile device, but is not limited thereto.

[0201] It should be noted that, regardless of the type of sensing target, the sensing target can reflect the sensing reference signal sent to it; that is, the sensing target has the ability to reflect signals based on the sensing reference signal sent to it.

[0202] In some embodiments, the sensing target may reflect the signal to a first communication device that sends the sensing reference signal, or it may reflect the signal to other communication devices.

[0203] That is, the perceived target can reflect signals to the second communication device, which can be the same as the first communication device, or the second communication device can be different from the first communication device.

[0204] In some embodiments, the second communication device may receive a signal reflected by the sensing target based on the sensing reference signal.

[0205] In some embodiments, the name of the signal reflected by the sensing target is not limited, and it may be, for example, "reflection signal", "sensing reflection signal", etc.

[0206] In step S4103, the second communication device determines the first parameter of the sensing target based on the signal reflected by the sensing target.

[0207] In some embodiments, the second communication device may perform measurements based on the signal reflected by the sensing target to obtain a first parameter of the sensing target.

[0208] In some embodiments, the second communication device may be a UE, an access network device (such as a base station), etc., but is not limited thereto.

[0209] In some embodiments, the name of the second communication device is not limited, and it may be, for example, "second sensing transmitter".

[0210] Optionally, the second communication device is the same as the first communication device, that is, the communication device that sends the sensing reference signal can realize the first parameter measurement of the sensing target based on the signal reflected back from the sensing target.

[0211] For example, the first communication device is a base station, and the second communication device is also the same base station; or, the first communication device is a base station, and the second communication device is another base station; or, the first communication device is a base station, and the second communication device is a UE; or, the first communication device is a UE, and the second communication device is a base station; or, the first communication device is a UE, and the second communication device is also the same UE; or, the first communication device is a UE, and the second communication device is another UE, but not limited to these.

[0212] Optionally, the second communication device is different from the first communication device. That is, even if a certain communication device does not send a sensing reference signal to the sensing target, it may still receive a signal reflected by the sensing target based on the sensing reference signal sent by other communication devices, thereby realizing the first parameter measurement of the sensing target based on the received reflected signal.

[0213] In some embodiments, the first parameter includes at least one of the following: time delay parameter, Doppler frequency parameter, angle parameter, and received power parameter, but is not limited thereto.

[0214] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0215] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0216] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0217] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0218] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the receiver to respond to the sent content.

[0219] The communication method involved in the embodiments of this disclosure may include at least one of steps S4101 to S4103. For example, step S4102 may be implemented as a standalone embodiment, step S4101+S4102 may be implemented as a standalone embodiment, and step S4102+S4103 may be implemented as a standalone embodiment, but is not limited thereto.

[0220] In some embodiments, steps S4101 and S4102 may be performed in an alternate order or simultaneously.

[0221] In some embodiments, steps S4101 and S4103 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0222] In some embodiments, other optional implementations may be described before or after the specification corresponding to Figure 4.

[0223] To improve the maximum range of time delay measurements, embodiments of this disclosure propose that the subcarrier spacing occupied by the sensing RS be relatively small on at least a portion of the OFDM symbols used for sensing RS, while the subcarrier spacing occupied by the sensing RS can be relatively large on other OFDM symbols used for sensing RS. Simultaneously, while the OFDM symbol spacing occupied by the sensing RS is relatively small on at least a portion of the subcarriers used for sensing RS, the OFDM symbol spacing occupied by the sensing RS can be relatively large on other subcarriers used for sensing RS. This method reduces the overhead of interfering RS while balancing the maximum time delay range and maximum Doppler frequency range supported by the sensing RS.

[0224] When indicating the time-frequency resources of a sensing RS, one may indicate the time-frequency resources of the sensing RS on at least a portion of the OFDM symbols used for sensing the RS, and the time-frequency resources of the sensing RS on the subcarriers used for sensing the RS. Alternatively, when indicating the time-frequency resources of a sensing RS, one may indicate the time-frequency resources of the sensing RS on at least a portion of the OFDM symbols used for sensing the RS, and the time-frequency resources of the sensing RS on the other OFDM symbols used for sensing the RS. Alternatively, when indicating the time-frequency resources of a sensing RS, one may indicate the time-frequency resources of the sensing RS on the subcarriers used for sensing the RS, and the time-frequency resources of the sensing RS on the other subcarriers used for sensing the RS.

[0225] Method 1: Allocate all subcarriers for sensing RS on at least a portion of the OFDM symbols used for sensing RS. The at least a portion of the OFDM symbols used for sensing RS can be continuous or discontinuous within one period P, for example, equally spaced OFDM symbols. Furthermore, allocate all OFDM symbols for sensing RS on at least a portion of the subcarriers used for sensing RS. The at least a portion of the subcarriers used for sensing RS can be continuous or discontinuous, for example, equally spaced subcarriers. Using discontinuous subcarriers is beneficial for obtaining frequency classification.

[0226] Using this method, on the OFDM symbols used for sensing RS, other than the at least a portion of those used for sensing RS, the sensing RS occupies only a portion of the subcarriers.

[0227] Method 2: On at least a part of the OFDM symbols for sensing RS, the sensing RS allocates subcarriers at an interval M1, where M1 is greater than or equal to 1. The at least a part of the OFDM symbols for sensing RS can be continuous or discontinuous within a period P. For example, the OFDM symbols are equally spaced at an interval N2, where N1 < N2. Also, on at least a part of the subcarriers for sensing RS, the sensing RS allocates OFDM symbols at an interval N1, where N1 is greater than or equal to 1. The at least a part of the subcarriers for sensing RS can be continuous or discontinuous. For example, the subcarriers are equally spaced at an interval M2, where M1 < M2. Using discontinuous subcarriers is beneficial for obtaining frequency grading. With this method, there can be common resource elements (REs) of the sensing RS that belong to both the above-mentioned at least a part of the OFDM symbols for sensing RS and the above-mentioned at least a part of the subcarriers for sensing RS.

[0228] With this method, on the other OFDM symbols for sensing RS other than the above-mentioned at least a part of the OFDM symbols for sensing RS, the sensing RS can allocate subcarriers at an interval M2. On the other subcarriers for sensing RS other than the above-mentioned at least a part of the subcarriers for sensing RS, the sensing RS can allocate OFDM symbols at an interval N2.

[0229] Denote the sequence of the sensing reference signal as Using the method provided in the embodiments of the present disclosure, the sequence of the sensing reference RS can be generated separately within each OFDM symbol. The sequence c(i) is generally initialized according to parameters such as the cell ID or the configured ID, the time slot index, and the OFDM symbol index. Alternatively, the sensing RS can also be re-initialized only at the start position of each repetition period P. The sensing RS sequence is sequentially mapped to each resource element (RE) of the sensing RS. The sequence c(i) is generally initialized according to parameters such as the cell ID or the configured ID.

[0230] FIG. 6 is a schematic flowchart of a signal transmission method according to an embodiment of the present disclosure. As shown in FIG. 6, the embodiment of the present disclosure relates to a signal transmission method, and the above method includes:

[0231] Step S6101: Transmit resource indication information.

[0232] For the optional implementation of step S6101, reference can be made to the optional implementation of step S4101 in FIG. 4 and other related parts in the embodiments related to FIG. 4, which will not be elaborated here.

[0233] In some embodiments, the first communication device transmits resource indication information to the sensing target, but it is not limited thereto, and resource indication information can also be transmitted to other entities.

[0234] In some embodiments, the resource indication information is used to indicate any of the following:

[0235] The time-frequency resources of the sensing reference signal on the first OFDM symbol and the time-frequency resources of the sensing reference signal on the first subcarrier;

[0236] The time-frequency resources of the sensing reference signal on the first OFDM symbol and the time-frequency resources of the sensing reference signal on the second OFDM symbol;

[0237] The time-frequency resources of the sensing reference signal on the first subcarrier and the time-frequency resources of the sensing reference signal on the second subcarrier.

[0238] The details of the sensing reference signal, the first OFDM symbol, the second OFDM symbol, the first subcarrier, and the second subcarrier will be described in step S6102 and will not be repeated here.

[0239] Step S6102: Send a sensing reference signal.

[0240] The optional implementation of step S6102 can be found in the optional implementation of step S4102 in Figure 4 and other related parts in the embodiments involved in Figure 4, which will not be repeated here.

[0241] In some embodiments, the first communication device transmits a sensing reference signal to the sensing target, but is not limited thereto; it may also transmit the sensing reference signal to other entities.

[0242] In some embodiments, the subcarrier spacing of the subcarriers used by the sensing reference signal on the first orthogonal frequency division multiplexing (OFDM) symbol is less than the subcarrier spacing of the subcarriers occupied by the sensing reference signal on the second OFDM symbol, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier is less than the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier.

[0243] Wherein, the first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensed reference signal, and the second OFDM symbol is the OFDM symbol occupied by the sensed reference signal other than the first OFDM symbol; the first subcarrier is at least a portion of the subcarriers used to transmit the sensed reference signal, and the second subcarrier is the subcarrier used to transmit the sensed reference signal other than the first subcarrier.

[0244] In some embodiments, on a first OFDM symbol, the sensing reference signal occupies all subcarriers, and on a second OFDM symbol, the sensing reference signal occupies a portion of the subcarriers; and, on the first subcarrier, the sensing reference signal occupies all OFDM symbols, and on the second subcarrier, the sensing reference signal occupies a portion of the OFDM symbols.

[0245] In some embodiments, for a first subcarrier occupying all OFDM symbols of the sensed reference signal, the first subcarrier is either continuous or discontinuous.

[0246] In some embodiments, for a first OFDM symbol occupying all subcarriers of the sensed reference signal, the first OFDM symbol is continuous within a repetition period, or the first OFDM symbol is discontinuous within a repetition period.

[0247] In some embodiments, the subcarrier spacing of the subcarriers occupied by the sensing reference signal on the first OFDM symbol satisfies a first spacing value, and the subcarrier spacing of the subcarriers occupied by the sensing reference signal on the second OFDM symbol satisfies a second spacing value; furthermore, the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the first subcarrier satisfies a third spacing value, and the symbol spacing of the OFDM symbol occupied by the sensing reference signal on the second subcarrier satisfies a fourth spacing value. Wherein, the first spacing value is less than the second spacing value, and the third spacing value is less than the fourth spacing value.

[0248] In some embodiments, the first OFDM symbols of the occupied subcarriers whose subcarrier spacing satisfies the first spacing value are continuous within a repetition period, or the first OFDM symbols of the occupied subcarriers whose subcarrier spacing satisfies the first spacing value are discontinuous within a repetition period.

[0249] In some embodiments, the second OFDM symbols of the occupied subcarriers whose subcarrier spacing satisfies the second spacing value are continuous within a repetition period, or the second OFDM symbols of the occupied subcarriers whose subcarrier spacing satisfies the second spacing value are discontinuous within a repetition period.

[0250] In some embodiments, the first subcarriers of the occupied OFDM symbols whose symbol spacing satisfies the third spacing value are continuous, or the first subcarriers of the occupied OFDM symbols whose symbol spacing satisfies the third spacing value are discontinuous.

[0251] In some embodiments, the second subcarriers of the occupied OFDM symbols whose symbol spacing satisfies the fourth spacing value are continuous, or the second subcarriers of the occupied OFDM symbols whose symbol spacing satisfies the fourth spacing value are discontinuous.

[0252] In some embodiments, the signal values ​​corresponding to different indices in the sequence of the sensing reference signal are determined based on the signal values ​​at the corresponding indices in the pseudo-random sequence.

[0253] In some embodiments, the sequence of the sensing reference signal is as follows:

[0254] Where r() represents the sequence carried by the sensing reference signal, c() represents the pseudo-random sequence, and m represents the index in the sequence.

[0255] In some embodiments, the sequence of the sensing reference signal is initialized within each OFDM symbol, or the sequence of the sensing reference signal is initialized at the beginning of each repetition cycle.

[0256] In some embodiments, the sequence of the sensed reference signal is initialized within each OFDM symbol, and the initialization parameters of the pseudo-random sequence include at least identification information, a time slot index within a radio frame, and an OFDM symbol index within a time slot.

[0257] In some embodiments, the sequence of the sensing reference signal is initialized at the beginning of each repetition cycle, and the initialization parameters of the pseudo-random sequence include at least identification information.

[0258] In some embodiments, the identification information is a cell identifier, or the identification information is a configured identifier.

[0259] Step S6103: Obtain the signal reflected by the sensing target based on the sensing reference signal.

[0260] The optional implementation of step S6103 can be found in the optional implementation of step S4102 in Figure 4 and other related parts in the embodiments involved in Figure 4, which will not be repeated here.

[0261] In some embodiments, the first communication device receives a signal reflected by the sensing target based on a sensing reference signal, but is not limited thereto, and may also receive a signal reflected by other subjects based on a sensing reference signal.

[0262] In some embodiments, the first communication device acquires the reflected signal as defined by the protocol.

[0263] In some embodiments, the first communication device acquires the reflected signal from the upper layer(s).

[0264] In some embodiments, the first communication device processes the signal to obtain the reflected signal.

[0265] In some embodiments, step S6103 is omitted, the first communication device autonomously implements the function indicated by the reflected signal, or the above function is the default or default value.

[0266] Step S6104: Determine the first parameter of the perceived target based on the signal reflected by the perceived target.

[0267] The optional implementation of step S6104 can be found in the optional implementation of step S4103 in Figure 4 and other related parts in the embodiments involved in Figure 4, which will not be repeated here.

[0268] In some embodiments, the first parameter includes at least one of the following: time delay parameter, Doppler frequency parameter, angle parameter, and received power parameter.

[0269] The communication method involved in the embodiments of this disclosure may include at least one of steps S6101 to S6104. For example, step S6102 may be implemented as an independent embodiment, step S6101+S6102 may be implemented as an independent embodiment, step S6102+S6103 may be implemented as an independent embodiment, step S6102+S6104 may be implemented as an independent embodiment, step S6101+S6102+S6103 may be implemented as an independent embodiment, and step S6102+S6103+S6104 may be implemented as an independent embodiment, but is not limited thereto.

[0270] In some embodiments, steps S6101 and S6102 may be performed in an alternate order or simultaneously.

[0271] In some embodiments, steps S6101, S6103, and S610 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0272] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0273] This disclosure also proposes an apparatus for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the communication device (including the first communication device or the second communication device) in any of the above methods.

[0274] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0275] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0276] Figure 7 is a schematic diagram of the structure of a communication device proposed in an embodiment of this disclosure. As shown in Figure 7, the communication device 7100 may include at least a transceiver module 7101. In some embodiments, the transceiver module 7101 is configured to transmit a sensing reference signal to a sensing target, wherein the subcarrier spacing of the subcarriers occupied by the sensing reference signal on a first orthogonal frequency division multiplexing (OFDM) symbol is smaller than the subcarrier spacing of the subcarriers occupied by the sensing reference signal on a second OFDM symbol, and the symbol spacing of the OFDM symbols occupied by the sensing reference signal on the first subcarrier is smaller than the symbol spacing of the OFDM symbols occupied by the sensing reference signal on the second subcarrier; wherein the first OFDM symbol is at least a portion of the OFDM symbols occupied by the sensing reference signal, and the second OFDM symbol is the OFDM symbol other than the first OFDM symbol among the OFDM symbols occupied by the sensing reference signal; the first subcarrier is at least a portion of the subcarriers used to transmit the sensing reference signal, and the second subcarrier is the subcarrier other than the first subcarrier among the subcarriers used to transmit the sensing reference signal. Optionally, the transceiver module 7101 is used to perform at least one of the communication steps (such as step S4101, step S4102, but not limited thereto) performed by the communication device in any of the above methods, which will not be described in detail here.

[0277] In some embodiments, the communication device 7100 may further include a processing module. Optionally, the processing module is used to perform at least one of the other steps (e.g., step S4103, but not limited thereto) performed by the communication device in any of the above methods, which will not be described in detail here.

[0278] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0279] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0280] Figure 8A is a schematic diagram of the structure of the communication device 8100 proposed in an embodiment of this disclosure. The communication device 8100 may be an access network device, a core network device, or a chip, chip system, or processor that supports the communication device in implementing any of the above methods. The communication device 8100 can be used to implement the methods described in the above method embodiments, and for details, please refer to the description in the above method embodiments.

[0281] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 8100 is used to execute any of the above methods.

[0282] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may also be located outside the communication device 8100.

[0283] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceivers 8103 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S4101, S4102, but not limited thereto), and the processor 8101 performs at least one of the other steps (e.g., step S4103, but not limited thereto).

[0284] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0285] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0286] The communication device 8100 described in the above embodiments can be a communication device, but the scope of the communication device 8100 described in this disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0287] Figure 8B is a schematic diagram of the structure of chip 8200 according to an embodiment of this disclosure. For cases where the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of chip 8200 shown in Figure 8B, but it is not limited thereto.

[0288] Chip 8200 includes one or more processors 8201, which are used to perform any of the above methods.

[0289] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to memory 8203, and the interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201.

[0290] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S3101, S3102, but not limited thereto), and the processor 8201 performs at least one of the other steps (e.g., step S3103, but not limited thereto).

[0291] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0292] In some embodiments, chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memories 8203 may be located outside of chip 8200.

[0293] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 8100, cause the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0294] This disclosure also proposes a program product, which includes a computer program that, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Alternatively, when the program product is executed by the communication device 8100, it causes the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0295] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0296] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0297] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A signal transmission method, characterized by, The method comprises: sending a sensing reference signal to a sensing target, the sensing reference signal occupying subcarriers with a subcarrier spacing smaller than that of the sensing reference signal occupying subcarriers on a first orthogonal frequency division multiplexing (OFDM) symbol, and occupying OFDM symbols with a symbol spacing smaller than that of the sensing reference signal occupying OFDM symbols on a second subcarrier; wherein the first OFDM symbol is at least part of the OFDM symbols occupied by the sensing reference signal, and the second OFDM symbol is an OFDM symbol other than the first OFDM symbol occupied by the sensing reference signal; and the first subcarrier is at least part of the subcarriers used for transmitting the sensing reference signal, and the second subcarrier is a subcarrier other than the first subcarrier used for transmitting the sensing reference signal.

2. The method of claim 1, wherein, On the first OFDM symbol, the sensing reference signal occupies all subcarriers, and on the second OFDM symbol, the sensing reference signal occupies part of the subcarriers; and on the first subcarrier, the sensing reference signal occupies all OFDM symbols, and on the second subcarrier, the sensing reference signal occupies part of the OFDM symbols.

3. The method according to claim 1 or 2, characterized in that, The sensing reference signal occupies subcarriers with a subcarrier spacing satisfying a first interval value on a first OFDM symbol, and occupies subcarriers with a subcarrier spacing satisfying a second interval value on a second OFDM symbol; and the sensing reference signal occupies OFDM symbols with a symbol spacing satisfying a third interval value on a first subcarrier, and occupies OFDM symbols with a symbol spacing satisfying a fourth interval value on a second subcarrier; wherein the first interval value is smaller than the second interval value, and the third interval value is smaller than the fourth interval value.

4. The method according to any one of claims 1 to 3, characterized in that, The method further comprises: sending resource indication information to the sensing target, the resource indication information indicating time-frequency resources used for transmitting the sensing reference signal.

5. The method of claim 4, wherein, The resource indication information is used to indicate any of the following: time-frequency resources of the sensing reference signal on the first OFDM symbol, and time-frequency resources of the sensing reference signal on the first subcarrier; time-frequency resources of the sensing reference signal on the first OFDM symbol, and time-frequency resources of the sensing reference signal on the second OFDM symbol; time-frequency resources of the sensing reference signal on the first subcarrier, and time-frequency resources of the sensing reference signal on the second subcarrier.

6. The method according to any one of claims 1 to 5, characterized in that, Signal values corresponding to different indexes in a sequence of the sensing reference signal are determined based on signal values at corresponding indexes in a pseudo-random sequence.

7. The method of claim 6, wherein, The sequence of the sensing reference signal is: wherein r() represents a sequence carried by the sensing reference signal, c() represents a pseudo-random sequence, and m represents an index in the sequence.

8. The method according to claim 6 or 7, characterized in that, The sequence of the sensing reference signal is initialized at a start position of each repetition period, or the sequence of the sensing reference signal is initialized within each OFDM symbol.

9. The method of claim 8, wherein, The sequence of the sensing reference signal is initialized at the beginning of each OFDM symbol, and initialization parameters of the pseudo-random sequence at least include identification information, slot index in a radio frame, and OFDM symbol index in the slot.

10. The method according to claim 8 or 9, characterized in that, The sequence of the sensing reference signal is initialized at the beginning of each repetition period, and initialization parameters of the pseudo-random sequence at least include identification information.

11. The method according to claim 9 or 10, characterized in that, The identification information is a cell identification, or the identification information is a configured identification.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: receiving a signal reflected by the sensing target based on the sensing reference signal; determining a first parameter of the sensing target based on the signal reflected by the sensing target.

13. The method of claim 12, wherein, The first parameter includes at least one of a time delay parameter, a Doppler frequency parameter, an angle parameter, and a received power parameter.

14. A signal transmission method, characterized by, The method includes: A first communication device transmits a sensing reference signal to a sensing target, a subcarrier interval of a subcarrier occupied by the sensing reference signal on a first OFDM symbol is smaller than a subcarrier interval of a subcarrier occupied by the sensing reference signal on a second OFDM symbol, and a symbol interval of an OFDM symbol occupied by the sensing reference signal on a first subcarrier is smaller than a symbol interval of an OFDM symbol occupied by the sensing reference signal on a second subcarrier; wherein the first OFDM symbol is at least part of the OFDM symbol occupied by the sensing reference signal, the second OFDM symbol is an OFDM symbol other than the first OFDM symbol among the OFDM symbol occupied by the sensing reference signal; the first subcarrier is at least part of the subcarrier used for transmitting the sensing reference signal, and the second subcarrier is a subcarrier other than the first subcarrier among the subcarrier used for transmitting the sensing reference signal. The sensing target reflects a sensing signal to a second communication device based on the sensing reference signal transmitted to the sensing target. The second communication device receives a signal reflected by the sensing target based on the sensing reference signal.

15. A communication device, characterized by It includes: A transceiver module is configured to transmit a sensing reference signal to a sensing target, a subcarrier interval of a subcarrier occupied by the sensing reference signal on a first OFDM symbol is smaller than a subcarrier interval of a subcarrier occupied by the sensing reference signal on a second OFDM symbol, and a symbol interval of an OFDM symbol occupied by the sensing reference signal on a first subcarrier is smaller than a symbol interval of an OFDM symbol occupied by the sensing reference signal on a second subcarrier; Wherein, the first OFDM symbol is at least part of the OFDM symbol occupied by the sensing reference signal, the second OFDM symbol is an OFDM symbol other than the first OFDM symbol among the OFDM symbol occupied by the sensing reference signal; the first subcarrier is at least part of the subcarrier used for transmitting the sensing reference signal, and the second subcarrier is a subcarrier other than the first subcarrier among the subcarrier used for transmitting the sensing reference signal.

16. A communication device, characterized by It includes: One or more transceivers; The communication device is configured to perform the signal transmission method according to any one of claims 1-13.

17. A storage medium, the storage medium storing instructions, wherein, The instructions, when executed on the communication device, cause the communication device to perform the signal transmission method according to any one of claims 1-13.

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