Indication methods and apparatuses, and communication device, communication system and storage medium

Abstract

Provided in the present application are indication methods and apparatuses, and a device and a storage medium. The method comprises: a network device sending at least one of first information and second information, wherein the first information is used for indicating the position of an orthogonal time frequency and space (OTFS) scheduling unit in a time-frequency domain, and the second information is used for indicating the position where user data is borne in the OTFS scheduling unit. The indication methods provided in the present application are used for indicating a resource position where user data is borne in an OTFS system, so as to realize successful sending and / or receiving of data in the OTFS system.

Description

Indication method and device, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to an indication method and apparatus, a communication device, a communication system, and a storage medium. Background Art

[0002] With the large-scale development of high-speed railways and the increasing popularity of vehicle communications on highways, wireless communication systems in high-speed mobile environments have attracted widespread attention. In high-speed mobile environments, due to the high terminal movement speed, wireless communications usually suffer from problems such as fast time-varying fading, Doppler frequency shift, and Doppler spread. In order to overcome the above problems, the Orthogonal Time Frequency and Space (OTFS) communication system was introduced. OTFS is a two-dimensional modulation scheme that performs modulation in the delay-Doppler (DD) domain. Through a series of two-dimensional transformations, the dual-dispersion channel is converted into an approximately non-fading channel in the delay-Doppler domain, which can achieve more significant performance gains. Therefore, the OTFS system has broad application prospects in the field of communications;

[0003] However, how to realize the sending and receiving of data in the OTFS system is an urgent problem to be solved.

[0004] Summary of the Invention

[0005] The present disclosure provides an indication method and apparatus, a communication device, a communication system, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a method for indicating is proposed, including:

[0007] The network device sends at least one of first information and second information, where the first information is used to indicate the position of the orthogonal time-frequency space (OTFS) scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the user data carried in the OTFS scheduling unit.

[0008] According to a second aspect of an embodiment of the present disclosure, a method for indicating is proposed, including:

[0009] The terminal receives at least one of first information and second information, where the first information is used to indicate a position of the OTFS scheduling unit in the time-frequency domain, and the second information is used to indicate a position in the OTFS scheduling unit that carries user data.

[0010] According to a third aspect of the embodiments of the present disclosure, a method for indicating is proposed, including:

[0011] The network device sends at least one of first information and second information, where the first information is used to indicate a position of an orthogonal time-frequency space (OTFS) scheduling unit in the time-frequency domain, and the second information is used to indicate a position in the OTFS scheduling unit that carries user data;

[0012] The terminal receives at least one of the first information and the second information.

[0013] According to a fourth aspect of an embodiment of the present disclosure, a first indication device is provided, comprising:

[0014] A sending module is used for a network device to send at least one of first information and second information, wherein the first information is used to indicate the position of the orthogonal time-frequency space (OTFS) scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the user data carried in the OTFS scheduling unit.

[0015] According to a fifth aspect of the embodiments of the present disclosure, a second indication device is provided, including:

[0016] A receiving module is configured to receive at least one of first information and second information at a terminal, wherein the first information is used to indicate a position of an OTFS scheduling unit in a time-frequency domain, and the second information is used to indicate a position in the OTFS scheduling unit that carries user data.

[0017] According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0018] one or more processors;

[0019] The processor is used to call instructions to enable the communication device to execute the indication method described in any one of the first aspect and the second aspect.

[0020] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a terminal and a network device, wherein the terminal is configured to implement the indication method described in the first aspect, and the network device is configured to implement the indication method described in the second aspect.

[0021] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the indication method described in any one of the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0024] FIG2A is an interactive schematic diagram of an indication method provided by an embodiment of the present disclosure;

[0025] FIG2A1 is a schematic diagram of conversion between the DD domain and the time-frequency domain provided by one embodiment of the present disclosure;

[0026] FIG2B is an interactive diagram of an indication method provided by an embodiment of the present disclosure;

[0027] 3A-3C are flowcharts of an indication method provided in yet another embodiment of the present disclosure;

[0028] 4A-4C are flowcharts of an indication method provided in yet another embodiment of the present disclosure;

[0029] FIG5 is a schematic flow chart of an indication method provided in yet another embodiment of the present disclosure;

[0030] FIG6A is a schematic structural diagram of a first indicator device provided by one embodiment of the present disclosure;

[0031] FIG6B is a schematic structural diagram of a first indicator device provided by an embodiment of the present disclosure;

[0032] FIG7A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0033] FIG7B is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] The embodiments of the present disclosure provide an indication method and apparatus, a communication device, a communication system, and a storage medium.

[0035] In a first aspect, an embodiment of the present disclosure provides an indication method, the method comprising:

[0036] The network device sends at least one of first information and second information, where the first information is used to indicate the position of the orthogonal time-frequency space (OTFS) scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the user data carried in the OTFS scheduling unit.

[0037] In the above embodiment, the network device sends at least one of the first information and the second information, wherein the first information indicates the position of the OTFS scheduling unit in the time-frequency domain, and the second information indicates the position of the user data in the OTFS scheduling unit. Optionally, the network device may send at least one of the first information and the second information to the terminal, and the first information and the second information are used to: the network device and the terminal implement the reception and / or transmission of user data in the OTFS system. Optionally, since the user data in the OTFS system is DD domain data, when transmitting user data in the OTFS system, the data transmitter needs to first convert the user data from the DD domain to the time-frequency domain, and then convert the user data in the time-frequency domain from the time-frequency domain to the time domain before sending it. Moreover, after receiving the data, the data receiver needs to first convert the received data from the time domain to the time-frequency domain, and then convert it from the time-frequency domain to the DD domain to obtain the user data. That is to say, the data sending end sends time domain data, and the data receiving end receives time domain data, but the time domain data undergoes conversion in the time-frequency domain and the DD domain. Based on this, in the embodiment of the present disclosure, the network device sends at least one of the first information and the second information to the terminal, wherein the first information can determine the time-frequency domain position corresponding to the OTFS scheduling unit carrying user data after being converted into the time-frequency domain, and the second information can determine which positions in the OTFS scheduling unit are used to carry user data. Therefore, when user data is transmitted between the network device and the terminal in the OTFS system, the data sending end in the network device and the terminal can carry the user data in the OTFS scheduling unit based on the second information, that is, The user data is carried at the position indicated by the second information. After that, the OTFS scheduling unit carrying the user data can be converted to the time-frequency domain, and then converted from the time-frequency domain to the time domain and sent to the data receiving end. After the data receiving end receives the data, it can first convert the received data from the time domain to the time-frequency domain, and then determine the corresponding position of the OTFS scheduling unit carrying the user data in the time-frequency domain based on the first information. After that, the time-frequency domain position corresponding to the OTFS scheduling unit carrying the user data is converted from the time-frequency domain to the DD domain to obtain the OTFS scheduling unit, and the position of the user data is determined from the OTFS scheduling unit based on the second information, thereby realizing the sending and receiving of user data in the OTFS system. It can be seen that in the embodiment of the present disclosure, an indication method is provided for indicating the resource location carrying user data in the OTFS system to realize the successful sending and / or receiving of user data in the OTFS system.

[0038] In combination with some embodiments of the first aspect, in some embodiments, the OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following:

[0040] A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit;

[0041] A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the first indication is used to indicate at least two of the starting position, duration, and ending position of the first time domain position; and / or

[0043] The second indication is used to indicate at least two of a starting position, a duration, and an ending position of the first frequency domain position.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the first indication includes a first bit map, each bit in the first bit map corresponds to a time domain position, and the bit value carried by the bit in the first bit map is used to indicate whether the time domain position corresponding to the bit in the first bit map is the first time domain position; and / or

[0045] The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

[0046] In combination with some embodiments of the first aspect, in some embodiments, the first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period; and / or

[0047] The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

[0048] In combination with some embodiments of the first aspect, in some embodiments, the indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

[0049] In combination with some embodiments of the first aspect, in some embodiments, the time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

[0050] In the above embodiment, a method for how the first information indicates the position of the OTFS scheduling unit in the time-frequency domain is specifically defined to achieve successful indication of the "position of the OTFS scheduling unit in the time-frequency domain", thereby enabling the network device to successfully indicate the position of the OTFS scheduling unit in the time-frequency domain to the terminal, so that the network device and the terminal can successfully implement the sending and / or reception of user data in the OTFS system based on the first information.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the second information includes at least one of the following:

[0052] A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit;

[0053] A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

[0054] In combination with some embodiments of the first aspect, in some embodiments, the third indication is used to indicate at least two of the starting position, duration, and ending position of the first delay domain position; and / or

[0055] The fourth indication is used to indicate at least two of a starting position, a duration, and an ending position of the first Doppler domain position.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the third indication includes a third bit map, each bit in the third bit map corresponds to a delay domain position, and the bit value carried by the bit in the third bit map is used to indicate whether the delay domain position corresponding to the bit in the third bit map is the first delay domain position; and / or

[0057] The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

[0058] In combination with some embodiments of the first aspect, in some embodiments, the third indication is used to indicate at least one of the period of the first delay domain position, the starting position of the first delay domain position within the period, and the duration of the first delay domain position within the period; and / or

[0059] The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a duration of the first Doppler domain position within the period.

[0060] In combination with some embodiments of the first aspect, in some embodiments, the indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

[0061] In combination with some embodiments of the first aspect, in some embodiments, P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

[0062] In the above embodiment, a method for how the second information indicates the location of the user data carried in the OTFS scheduling unit is specifically defined to achieve successful indication of the "location of the user data carried in the OTFS scheduling unit", thereby enabling the network device to successfully indicate the location of the user data carried in the OTFS scheduling unit to the terminal, so that the network device and the terminal can successfully implement the sending and / or reception of user data in the OTFS system based on the second information.

[0063] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes at least one of the following:

[0064] The network device sends user data in the OTFS system based on at least one of the first information and the second information;

[0065] The network device receives user data in the OTFS system based on at least one of the first information and the second information.

[0066] In the above embodiment, after the network device sends at least one of the first information and the second information, it can send user data in the OTFS system based on at least one of the first information and the second information, and / or it can receive user data in the OTFS system based on at least one of the first information and the second information, thereby realizing the sending and receiving of user data in the OTFS system.

[0067] In a second aspect, an embodiment of the present disclosure provides an indication method, including:

[0068] The terminal receives at least one of first information and second information, where the first information is used to indicate a position of the OTFS scheduling unit in the time-frequency domain, and the second information is used to indicate a position in the OTFS scheduling unit that carries user data.

[0069] In the above embodiment, the terminal receives at least one of the first information and the second information, wherein the first information indicates the position of the OTFS scheduling unit in the time-frequency domain, and the second information indicates the position of the user data in the OTFS scheduling unit. Optionally, the terminal may receive at least one of the first information and the second information sent by the network device, and the first information and the second information are used to enable the network device and the terminal to receive and / or send user data in the OTFS system. Optionally, since the user data in the OTFS system is data in the DD domain, when sending user data in the OTFS system, the data sending end needs to first convert the user data from the DD domain to the time-frequency domain, and then from the time-frequency domain to the time domain before sending it. Moreover, after receiving the data, the data receiving end needs to first convert the received data from the time domain to the time-frequency domain, and then from the time-frequency domain to the DD domain to obtain the user data. Based on this, in the embodiment of the present disclosure, the network device sends at least one of the first information and the second information to the terminal, wherein the first information can determine the time-frequency domain position corresponding to the OTFS scheduling unit carrying the user data after being converted into the time-frequency domain, and the second information can determine which positions in the OTFS scheduling unit are used to carry the user data. Therefore, when the network device and the terminal transmit user data, the data sending end in the network device and the terminal can carry the user data in the OTFS scheduling unit based on the second information, that is, carry the data at the position indicated by the second information, and then the OTFS scheduling unit carrying the data can be The FS scheduling unit is converted to the time-frequency domain, and then converted from the time-frequency domain to the time domain and sent to the data receiving end. After receiving the data, the data receiving end can first convert the received data from the time domain to the time-frequency domain, and then determine the corresponding position of the OTFS scheduling unit carrying the user data in the time-frequency domain based on the first information. Thereafter, the time-frequency domain position corresponding to the OTFS scheduling unit carrying the user data is converted from the time-frequency domain to the DD domain to obtain the OTFS scheduling unit, and the position carrying the user data is determined from the OTFS scheduling unit based on the second information, thereby realizing the sending and receiving of user data in the OTFS system. It can be seen that in the embodiment of the present disclosure, an indication method is provided for indicating the resource location carrying user data in the OTFS system to realize the successful sending and / or receiving of user data in the OTFS system.

[0070] In combination with some embodiments of the second aspect, in some embodiments, the OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

[0071] In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes at least one of the following:

[0072] A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit;

[0073] A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

[0074] In combination with some embodiments of the second aspect, in some embodiments, the first indication is used to indicate at least two of the starting position, duration, and ending position of the first time domain position; and / or

[0075] The second indication is used to indicate at least two of a starting position, a duration, and an ending position of the first frequency domain position.

[0076] In combination with some embodiments of the second aspect, in some embodiments, the first indication includes a first bit map, each bit in the first bit map corresponds to a time domain position, and the bit value carried by the bit in the first bit map is used to indicate whether the time domain position corresponding to the bit in the first bit map is the first time domain position; and / or

[0077] The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

[0078] In combination with some embodiments of the second aspect, in some embodiments, the first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period; and / or

[0079] The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

[0080] In combination with some embodiments of the second aspect, in some embodiments, the indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

[0081] In combination with some embodiments of the second aspect, in some embodiments, the time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

[0082] In conjunction with some embodiments of the second aspect, in some embodiments, the second information includes at least one of the following:

[0083] A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit;

[0084] A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

[0085] In combination with some embodiments of the second aspect, in some embodiments, the third indication is used to indicate at least two of the starting position, duration, and ending position of the first delay domain position; and / or

[0086] The fourth indication is used to indicate at least two of a starting position, a duration, and an ending position of the first Doppler domain position.

[0087] In combination with some embodiments of the second aspect, in some embodiments, the third indication includes a third bit map, each bit in the third bit map corresponds to a delay domain position, and the bit value carried by the bit in the third bit map is used to indicate whether the delay domain position corresponding to the bit in the third bit map is the first delay domain position; and / or

[0088] The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

[0089] In combination with some embodiments of the second aspect, in some embodiments, the third indication is used to indicate at least one of the period of the first delay domain position, the starting position of the first delay domain position within the period, and the duration of the first delay domain position within the period; and / or

[0090] The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a duration of the first Doppler domain position within the period.

[0091] In combination with some embodiments of the second aspect, in some embodiments, the indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

[0092] In combination with some embodiments of the second aspect, in some embodiments, P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

[0093] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes at least one of the following:

[0094] The terminal receives user data in the OTFS system based on at least one of the first information and the second information;

[0095] The terminal sends user data in the OTFS system based on at least one of the first information and the second information.

[0096] In a third aspect, an embodiment of the present disclosure provides an indication method for a communication system, wherein the communication system includes a network device and a terminal, and the method includes at least one of the following:

[0097] The network device sends at least one of first information and second information, where the first information is used to indicate a position of an OTFS scheduling unit in the time-frequency domain, and the second information is used to indicate a position in the OTFS scheduling unit that carries user data;

[0098] The terminal receives at least one of the first information and the second information.

[0099] In a fourth aspect, an embodiment of the present disclosure provides a first indication device, including:

[0100] A sending module is used for a network device to send at least one of first information and second information, wherein the first information is used to indicate the position of the orthogonal time-frequency space (OTFS) scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the user data carried in the OTFS scheduling unit.

[0101] In combination with some embodiments of the fourth aspect, in some embodiments, the OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

[0102] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first information includes at least one of the following:

[0103] A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit;

[0104] A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

[0105] In combination with some embodiments of the fourth aspect, in some embodiments, the first indication is used to indicate at least two of the starting position, duration, and ending position of the first time domain position; and / or

[0106] The second indication is used to indicate at least two of a starting position, a duration, and an ending position of the first frequency domain position.

[0107] In combination with some embodiments of the fourth aspect, in some embodiments, the first indication includes a first bit map, each bit in the first bit map corresponds to a time domain position, and the bit value carried by the bit in the first bit map is used to indicate whether the time domain position corresponding to the bit in the first bit map is the first time domain position; and / or

[0108] The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

[0109] In combination with some embodiments of the fourth aspect, in some embodiments, the first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period; and / or

[0110] The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

[0111] In combination with some embodiments of the fourth aspect, in some embodiments, the indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

[0112] In combination with some embodiments of the fourth aspect, in some embodiments, the time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

[0113] In conjunction with some embodiments of the fourth aspect, in some embodiments, the second information includes at least one of the following:

[0114] A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit;

[0115] A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

[0116] In combination with some embodiments of the fourth aspect, in some embodiments, the third indication is used to indicate at least two of the starting position, duration, and ending position of the first delay domain position; and / or

[0117] The fourth indication is used to indicate at least two of a starting position, a duration, and an ending position of the first Doppler domain position.

[0118] In combination with some embodiments of the fourth aspect, in some embodiments, the third indication includes a third bit map, each bit in the third bit map corresponds to a delay domain position, and the bit value carried by the bit in the third bit map is used to indicate whether the delay domain position corresponding to the bit in the third bit map is the first delay domain position; and / or

[0119] The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

[0120] In combination with some embodiments of the fourth aspect, in some embodiments, the third indication is used to indicate at least one of the period of the first delay domain position, the starting position of the first delay domain position within the period, and the duration of the first delay domain position within the period; and / or

[0121] The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a duration of the first Doppler domain position within the period.

[0122] In combination with some embodiments of the fourth aspect, in some embodiments, the indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

[0123] In combination with some embodiments of the fourth aspect, in some embodiments, P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

[0124] In conjunction with some embodiments of the fourth aspect, in some embodiments, the method further includes at least one of the following:

[0125] The network device sends user data in the OTFS system based on at least one of the first information and the second information;

[0126] The network device receives user data in the OTFS system based on at least one of the first information and the second information.

[0127] In a fifth aspect, the present disclosure provides a second indication device, including:

[0128] A receiving module is configured to receive at least one of first information and second information at a terminal, wherein the first information is used to indicate a position of an OTFS scheduling unit in a time-frequency domain, and the second information is used to indicate a position in the OTFS scheduling unit that carries user data.

[0129] In combination with some embodiments of the fifth aspect, in some embodiments, the OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

[0130] In conjunction with some embodiments of the fifth aspect, in some embodiments, the first information includes at least one of the following:

[0131] A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit;

[0132] A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

[0133] In combination with some embodiments of the fifth aspect, in some embodiments, the first indication is used to indicate at least two of the starting position, duration, and ending position of the first time domain position; and / or

[0134] The second indication is used to indicate at least two of a starting position, a duration, and an ending position of the first frequency domain position.

[0135] In combination with some embodiments of the fifth aspect, in some embodiments, the first indication includes a first bit map, each bit in the first bit map corresponds to a time domain position, and the bit value carried by the bit in the first bit map is used to indicate whether the time domain position corresponding to the bit in the first bit map is the first time domain position; and / or

[0136] The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

[0137] In combination with some embodiments of the fifth aspect, in some embodiments, the first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period; and / or

[0138] The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

[0139] In combination with some embodiments of the fifth aspect, in some embodiments, the indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

[0140] In combination with some embodiments of the fifth aspect, in some embodiments, the time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

[0141] In conjunction with some embodiments of the fifth aspect, in some embodiments, the second information includes at least one of the following:

[0142] A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit;

[0143] A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

[0144] In combination with some embodiments of the fifth aspect, in some embodiments, the third indication is used to indicate at least two of the starting position, duration, and end position of the first delay domain position; and / or

[0145] The fourth indication is used to indicate at least two of a starting position, a duration, and an ending position of the first Doppler domain position.

[0146] In combination with some embodiments of the fifth aspect, in some embodiments, the third indication includes a third bit map, each bit in the third bit map corresponds to a delay domain position, and the bit value carried by the bit in the third bit map is used to indicate whether the delay domain position corresponding to the bit in the third bit map is the first delay domain position; and / or

[0147] The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

[0148] In combination with some embodiments of the fifth aspect, in some embodiments, the third indication is used to indicate at least one of the period of the first delay domain position, the starting position of the first delay domain position within the period, and the duration of the first delay domain position within the period; and / or

[0149] The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a duration of the first Doppler domain position within the period.

[0150] In combination with some embodiments of the fifth aspect, in some embodiments, the indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

[0151] In combination with some embodiments of the fifth aspect, in some embodiments, P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

[0152] In conjunction with some embodiments of the fifth aspect, in some embodiments, the method further includes at least one of the following:

[0153] The terminal receives user data in the OTFS system based on at least one of the first information and the second information;

[0154] The terminal sends user data in the OTFS system based on at least one of the first information and the second information.

[0155] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; one or more memories for storing instructions; wherein the processor is used to call the instructions so that the communication device executes the indication method described in the first and second aspects, and the optional implementation methods of the first and second aspects.

[0156] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the network device is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0157] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0158] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0159] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0160] It is understandable that the first indication device, the second indication device, the communication device, the communication system, the storage medium, the program product, and the computer program are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0161] The present disclosure provides invention titles. In some embodiments, the terms "indication method" and "information indication method," "information sending method," and "information receiving method" are interchangeable; the terms "indication device" and "information processing device," "information sending device," and "information receiving device" are interchangeable; and the terms "information processing system," "communication system," "information sending system," and "information receiving system" are interchangeable.

[0162] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain 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 certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0163] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0164] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0165] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0166] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0167] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0168] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0169] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0170] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0171] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0172] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0173] In some embodiments, terms such as "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 less than", and "above" can be replaced with each other, and terms such as "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" can be replaced with each other.

[0174] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0175] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0176] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "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", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0177] In some embodiments, the terms "terminal", "terminal device", "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. can be used interchangeably.

[0178] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0179] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0180] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0181] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0182] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0183] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between the information and the parameters, it is not necessarily required to configure all the correspondences shown in the tables. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments may be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also use other names that the indicating device can understand, and the values ​​or representations of the parameters may also use other values ​​or representations that the indicating device can understand. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0184] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0185] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 may include a network device 101 and a terminal 102. Optionally, the network device is at least one of an access network device and a core network device.

[0186] In some embodiments, the terminal 102 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0187] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0188] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0189] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0190] In some embodiments, a core network device may be a single device comprising one or more network elements, or may be a plurality of devices or a group of devices, each comprising all or part of one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0191] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0192] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0193] The embodiments of the present disclosure 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 (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (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 utilizing other indication methods, and next-generation systems based on and extending these systems. Furthermore, a combination of multiple systems (e.g., a combination of LTE or LTE-A with 5G) may also be employed.

[0194] FIG2A is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to an indication method, which is used in a communication system 100. The method includes:

[0195] Step 2101: The network device sends at least one of the first information and the second information.

[0196] Optionally, in some embodiments, the first information may be used to indicate a position of the OTFS scheduling unit in the time-frequency domain, and the second information may be used to indicate a position in the OTFS scheduling unit that carries user data.

[0197] Optionally, the network device may send the first information first and then the second information, or may send the first information and the second information simultaneously, or may send the second information first and then the first information. This disclosure is not limited to this. It should be understood that the first information and the second information can be carried by the same signaling.

[0198] Optionally, the OTFS scheduling unit may be a unit of the DD domain dimension. Optionally, the OTFS scheduling unit may include at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain. For example, assuming that the OTFS scheduling unit includes M OTFS symbols in the delay domain and N OTFS subcarriers in the Doppler domain, where M and N are both positive integers greater than 1, the symbol spacing in the delay domain direction of the OTFS scheduling unit is: 1 / (MΔf), and the spacing in the Doppler domain frequency shift direction is 1 / (NT), where Δf is the spacing in the frequency domain direction under the time-frequency domain dimension, and T is the spacing in the time domain direction under the time-frequency domain dimension.

[0199] Optionally, the network device may be configured to send at least one of the first information and the second information to the terminal. Optionally, in some embodiments, the terminal may receive at least one of the first information and the second information. The first information and the second information may be used to enable the network device and the terminal to receive and / or send user data in the OTFS system. That is, the terminal device may receive the position of the OTFS scheduling unit in the time-frequency domain determined by the network device, as well as the position of the data carried in the OTFS scheduling unit. Optionally, since the user data in the OTFS system is DD domain data, when transmitting user data in the OTFS system, the data sending end needs to first convert the user data from the DD domain to the time-frequency domain, and then convert from the time-frequency domain to the time domain before sending it. Moreover, after receiving the data, the data receiving end needs to first convert the received data from the time domain to the time-frequency domain, and then convert from the time-frequency domain to the DD domain to obtain the user data. Therefore, in some embodiments, the network device sends at least one of the first information and the second information to the terminal, wherein the first information can determine the time-frequency domain position corresponding to the OTFS scheduling unit carrying the user data after being converted into the time-frequency domain, and the second information can determine which positions in the OTFS scheduling unit are used to carry the user data. Therefore, when the network device and the terminal transmit user data, the data sending end in the network device and the terminal can carry the user data in the OTFS scheduling unit based on the second information, that is, carry the user data at the position indicated by the second information, and then the data sending end can carry the user data in the OTFS scheduling unit. The OTFS scheduling unit is converted to the time-frequency domain, and then converted from the time-frequency domain to the time domain and sent to the data receiving end. After receiving the data, the data receiving end can first convert the received data from the time domain to the time-frequency domain, and then determine the corresponding position of the OTFS scheduling unit carrying the user data in the time-frequency domain based on the first information. After that, the time-frequency domain position corresponding to the OTFS scheduling unit carrying the user data is converted from the time-frequency domain to the DD domain to obtain the OTFS scheduling unit, and the position of the user data is determined from the OTFS scheduling unit based on the second information, thereby realizing the sending and receiving of user data in the OTFS system. It can be seen that in the embodiment of the present disclosure, an indication method is provided for indicating the resource location of the user data in the OTFS system to realize the successful sending and / or receiving of user data in the OTFS system.

[0200] Optionally, Figure 2A1 is a schematic diagram of the conversion between the DD domain and the time-frequency domain provided by an embodiment of the present disclosure. As shown in Figure 2A1, user data can be converted from the DD domain to the time-frequency domain based on the inverse symplectic finite Fourier transform (ISFFT), and data can be converted from the time-frequency domain to the DD domain based on the symplectic finite Fourier transform (SFFT).

[0201] The following describes how the first information indicates the position of the OTFS scheduling unit in the time-frequency domain:

[0202] Optionally, in some embodiments, the first information may include at least one of the following:

[0203] A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit;

[0204] The second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

[0205] Optionally, the above-mentioned first time domain position can be understood as, for example, the position in the time domain corresponding to the OTFS scheduling unit under the DD domain dimension in the time-frequency domain dimension, and the above-mentioned first frequency domain position can be understood as, for example, the position in the frequency domain corresponding to the OTFS scheduling unit under the DD domain dimension in the time-frequency domain dimension.

[0206] Optionally, in some embodiments, the first indication can be used to indicate at least two of the starting position, duration, and end position of the first time domain position; the second indication can be used to indicate at least two of the starting position, duration, and end position of the first frequency domain position.

[0207] Optionally, the indication granularity of the first indication may be at least one time slot; the indication granularity of the second indication may be at least one subband. Optionally, the time slot may include L consecutive symbols in the time domain, and the subband may include K consecutive subcarriers in the frequency domain, where L and K are positive integers.

[0208] For example, in some embodiments, when the indication granularity of the first indication is one time slot and the indication granularity of the second indication is one subband, the first indication can be used to indicate at least two of the starting time slot position, the time slot duration, and the ending time slot position of the first time domain position, and the second indication can be used to indicate at least two of the starting subband position, the subband duration, and the ending subband position of the first frequency domain position. In other words, as long as any two of the starting position, duration, and ending position are determined, the third one can be determined, thereby determining the position of the time slot and / or subband.

[0209] Optionally, in some embodiments, when the indication granularity of the first indication is multiple time slots, the multiple time slots can be divided into a time slot group and indicated with the time slot group as the granularity; when the indication granularity of the second indication is multiple subbands, the multiple subbands can be divided into a subband group and indicated with the subband group as the granularity.

[0210] For example, assume that the indication granularity of the first indication is G time slots, and the indication granularity of the second indication is S subbands, where G and S are both positive integers greater than 1. In this case, every G time slots in the time domain can be divided into a time slot group, and every S subbands in the frequency domain can be divided into a subband group. In addition, the first indication can be used to indicate at least two of the starting time slot group position, the duration of the time slot group (or the continuous number of time slot groups), and the ending time slot group position of the first time domain position; the second indication can be used to indicate at least two of the starting subband group position, the duration of the subband group (or the continuous number of subband groups), and the ending subband group position of the first time domain position.

[0211] Optionally, in some other embodiments, the first indication may include a first bit map, each bit in the first bit map corresponds to a time domain position, and the bit value carried by the bit in the first bit map is used to indicate whether the time domain position corresponding to the bit in the first bit map is the first time domain position. For example, when the bit value carried by the bit in the first bit map is a first value (such as 1), it indicates that the time domain position corresponding to the bit is the above-mentioned first time domain position; when the bit value carried by the bit in the first bit map is a second value (such as 0), it indicates that the time domain position corresponding to the bit is not the above-mentioned first time domain position. The second indication may include a second bit map, where each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position. For example, when the bit value carried by the bit in the second bit map is a first value (such as 1), it indicates that the frequency domain position corresponding to the bit is the above-mentioned first frequency domain position; when the bit value carried by the bit in the second bit map is a second value (such as 0), it indicates that the frequency domain position corresponding to the bit is not the above-mentioned first frequency domain position.

[0212] Optionally, in some embodiments, when the indication granularity of the first indication is a time slot and the indication granularity of the second indication is a subband, each bit in the first bit map included in the first indication may correspond to a time slot, and the bit value carried by the bit in the first bit map is used to indicate whether the time slot corresponding to the bit in the first bit map is the first time domain position, and each bit in the second bit map included in the second indication may correspond to a subband, and the bit value carried by the bit in the second bit map is used to indicate whether the subband corresponding to the bit in the second bit map is the first frequency domain position.

[0213] Optionally, in some embodiments, when the indication granularity of the first indication is G time slots and the indication granularity of the second indication is S subbands, in this case, every G time slots in the time domain can be divided into a time slot group, and every S subbands in the frequency domain can be divided into a subband group, and each bit in the first bitmap included in the first indication can correspond to a time slot group, and the bit value carried by the bit in the first bitmap is used to indicate whether the time slot group corresponding to the bit in the first bitmap is the first time domain position; each bit in the second bitmap included in the second indication can correspond to a subband group, and the bit value carried by the bit in the second bitmap is used to indicate whether the subband group corresponding to the bit in the second bitmap is the first frequency domain position.

[0214] Optionally, in some further embodiments, the first indication can be used to indicate at least one of the period of the first time domain position, the starting position of the first time domain position within the period, and the continuous length of the first time domain position within the period; the second indication can be used to indicate at least one of the period of the first frequency domain position, the starting position of the first frequency domain position within the period, and the continuous length of the first frequency domain position within the period.

[0215] Optionally, in some embodiments, when the indication granularity of the first indication is a time slot and the indication granularity of the second indication is a subband, the first indication can be used to indicate at least one of the period of the first time domain position, the starting time slot position of the first time domain position within the period, and the time slot duration of the first time domain position within the period; the second indication can be used to indicate at least one of the period of the first frequency domain position, the starting subband position of the first frequency domain position within the period, and the subband duration of the first frequency domain position within the period.

[0216] Optionally, in some embodiments, when the indication granularity of the first indication is G time slots and the indication granularity of the second indication is S subbands, N and M are both positive integers greater than 1. In this case, every G time slots in the time domain can be divided into a time slot group, and every S subbands in the frequency domain can be divided into a subband group. In addition, the first indication can be used to indicate at least one of the period of the first time domain position, the starting position of the starting time slot group of the first time domain position within the period, and the continuous length of the time slot group of the first time domain position within the period (or the continuous number of time slot groups); the second indication can be used to indicate at least one of the period of the first frequency domain position, the starting position of the starting subband group of the first frequency domain position within the period, and the continuous length of the subband group of the first frequency domain position within the period (or the continuous number of subband groups).

[0217] It should be noted that the above-mentioned "the first indication is used to indicate at least one of the period of the first time domain position, the starting position of the first time domain position within the period, and the continuous length of the first time domain position within the period; the second indication is used to indicate at least one of the period of the first frequency domain position, the starting position of the first frequency domain position within the period, and the continuous length of the first frequency domain position within the period" may be based on the premise that the position of the OTFS scheduling unit in the time and frequency domain is periodic. In addition, based on the period of the first time domain position, the starting position of the first time domain position within the period, and the continuous length of the first time domain position within the period, the first time domain position in each period can be determined, and based on the period of the first frequency domain position, the starting position of the first frequency domain position within the period, and the continuous length of the first frequency domain position within the period, the first frequency domain position in each period can be determined.

[0218] The above-mentioned "first indication is used to indicate at least two of the starting position, continuous length, and end position of the first time domain position, and the second indication is used to indicate at least two of the starting position, continuous length, and end position of the first frequency domain position", or "the first indication includes a first bit map, and the second indication includes a second bit map" can indicate the position of the OTFS scheduling unit in the time-frequency domain regardless of whether the position of the OTFS scheduling unit in the time-frequency domain is periodic or non-periodic.

[0219] The following describes how the second information indicates the location of the user data in the OTFS scheduling unit:

[0220] Optionally, in some embodiments, the second information may include at least one of the following:

[0221] A third indication, where the third indication is used to indicate a first delay domain position carrying user data in the OTFS scheduling unit;

[0222] A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

[0223] Optionally, in some embodiments, the third indication can be used to indicate at least two of the starting position, duration, and end position of the first delay domain position; the fourth indication is used to indicate at least two of the starting position, duration, and end position of the first Doppler domain position.

[0224] Optionally, in some embodiments, the indication granularity of the third indication may be P OTFS symbols; the indication granularity of the fourth indication may be Q OTFS subcarriers, where P and Q are positive integers. Optionally, P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

[0225] For example, in some embodiments, when the above-mentioned P and Q are both 1, the indication granularity of the third indication is one OTFS symbol, and the indication granularity of the fourth indication is one OTFS subcarrier. At this time, the third indication can be used to indicate at least two of the starting OTFS symbol position, the OTFS symbol duration (or the number of OTFS symbols), and the ending OTFS symbol position of the first delay domain position; the fourth indication can be used to indicate at least two of the starting OTFS subcarrier position, the OTFS subcarrier duration (or the number of OTFS subcarriers), and the ending OTFS subcarrier position of the first Doppler domain position.

[0226] Optionally, in some embodiments, when both P and Q are greater than 1, the indication granularity of the third indication is multiple OTFS symbols, and the indication granularity of the fourth indication is multiple OTFS subcarriers. In this case, every P OTFS symbols in the delay domain can be divided into an OTFS symbol group, and every Q OTFS subcarriers in the Doppler domain can be divided into an OTFS subcarrier group. Furthermore, the third indication can be used to indicate at least two of the starting OTFS symbol group position, the OTFS symbol group duration (or the number of OTFS symbol groups), and the ending OTFS symbol group position at the first delay domain position; and the fourth indication can be used to indicate at least two of the starting OTFS subcarrier group position, the OTFS subcarrier group duration (or the number of OTFS subcarrier groups), and the ending OTFS subcarrier group position at the first Doppler domain position.

[0227] Optionally, in some other embodiments, the third indication may include a third bitmap, each bit in the third bitmap corresponds to a delay domain position, and the bit value carried by the bit in the third bitmap is used to indicate whether the delay domain position corresponding to the bit in the third bitmap is the first delay domain position. For example, when the bit value carried by the bit in the third bitmap is a first value (such as 1), it indicates that the delay domain position corresponding to the bit is the above-mentioned first delay domain position; when the bit value carried by the bit in the third bitmap is a second value (such as 0), it indicates that the delay domain position corresponding to the bit is not the above-mentioned first delay domain position. domain position; the fourth indication may include a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position. For example, when the bit value carried by the bit in the fourth bit map is a first value (such as 1), it indicates that the Doppler domain position corresponding to the bit is the above-mentioned first Doppler domain position; when the bit value carried by the bit in the fourth bit map is a second value (such as 0), it indicates that the Doppler domain position corresponding to the bit is not the above-mentioned first Doppler domain position.

[0228] Optionally, in some embodiments, when the above-mentioned P and Q are both 1, the indication granularity of the third indication is an OTFS symbol, and the indication granularity of the fourth indication is an OTFS subcarrier. At this time, each bit in the third bit map included in the third indication can correspond to an OTFS symbol, and the bit value carried by the bit in the third bit map can be used to indicate whether the OTFS symbol corresponding to the bit in the third bit map is the first delay domain position, and each bit in the fourth bit map included in the fourth indication can correspond to an OTFS subcarrier, and the bit value carried by the bit in the fourth bit map can be used to indicate whether the OTFS subcarrier corresponding to the bit in the fourth bit map is the first Doppler domain position.

[0229] Optionally, in some embodiments, when the above-mentioned P and Q are greater than 1, the indication granularity of the third indication is P OTFS symbols, and the indication granularity of the fourth indication is Q OTFS subcarriers. In this case, every P OTFS symbols in the delay domain can be divided into an OTFS symbol group, and every Q OTFS subcarriers in the Doppler domain can be divided into an OTFS subcarrier group. In addition, each bit in the third bitmap included in the third indication can correspond to an OTFS symbol group, and the bit value carried by the bit in the third bitmap can be used to indicate whether the OTFS symbol group corresponding to the bit in the third bitmap is the first delay domain position. Each bit in the fourth bitmap included in the fourth indication can correspond to an OTFS subcarrier group, and the bit value carried by the bit in the fourth bitmap can be used to indicate whether the OTFS subcarrier group corresponding to the bit in the fourth bitmap is the first Doppler domain position.

[0230] Optionally, in some further embodiments, the third indication may be used to indicate at least one of the period of the first delay domain position, the starting position of the first delay domain position within the period, and the continuous length of the first delay domain position within the period; the fourth indication may be used to indicate at least one of the period of the first Doppler domain position, the starting position of the first Doppler domain position within the period, and the continuous length of the first Doppler domain position within the period.

[0231] Optionally, in some embodiments, when the above-mentioned P and Q are both 1, the indication granularity of the third indication is an OTFS symbol, and the indication granularity of the fourth indication is an OTFS subcarrier. At this time, the third indication can be used to indicate at least one of the period of the first delay domain position, the starting OTFS symbol position of the first delay domain position within the period, and the continuous length of the OTFS symbol of the first delay domain position within the period; the fourth indication can be used to indicate at least one of the period of the first Doppler domain position, the starting OTFS subcarrier position of the first Doppler domain position within the period, and the continuous length of the OTFS subcarrier of the first Doppler domain position within the period.

[0232] Optionally, in some embodiments, when the above-mentioned P and Q are greater than 1, the indication granularity of the third indication is P OTFS symbols, and the indication granularity of the fourth indication is Q OTFS subcarriers. At this time, every P OTFS symbols in the delay domain can be divided into an OTFS symbol group, and every Q OTFS subcarriers in the Doppler domain can be divided into an OTFS subcarrier group. The third indication can be used to indicate at least one of the period of the first delay domain position, the starting OTFS symbol group position of the first delay domain position within the period, and the continuous length of the OTFS symbol group of the first delay domain position within the period; the fourth indication can be used to indicate at least one of the period of the first Doppler domain position, the starting OTFS subcarrier group position of the first Doppler domain position within the period, and the continuous length of the OTFS subcarrier group of the first Doppler domain position within the period.

[0233] It should be noted that the aforementioned "third indication is used to indicate at least one of the period of the first delay domain position, the starting position of the first delay domain position within the period, and the duration of the first delay domain position within the period; the fourth indication is used to indicate at least one of the period of the first Doppler domain position, the starting position of the first Doppler domain position within the period, and the duration of the first Doppler domain position within the period" can be based on the following prerequisites: the position carrying user data in the OTFS scheduling unit is periodic. In addition, the first delay domain position in each period can be determined based on the period of the first delay domain position, the starting position of the first delay domain position within the period, and the duration of the first delay domain position within the period; and the first Doppler domain position in each period can be determined based on the period of the first Doppler domain position, the starting position of the first Doppler domain position within the period, and the duration of the first Doppler domain position within the period.

[0234] The above-mentioned "third indication is used to indicate at least two of the starting position, duration, and end position of the first delay domain position, and the fourth indication is used to indicate at least two of the starting position, duration, and end position of the first Doppler domain position", or "the third indication includes a third bit map, and the fourth indication includes a fourth bit map" can indicate the position of the user data carried in the OTFS scheduling unit regardless of whether the position of the user data carried in the OTFS scheduling unit is periodic or non-periodic.

[0235] Step 2102: The network device sends user data in the OTFS system based on at least one of the first information and the second information.

[0236] Optionally, in some embodiments, the network device sending user data in the OTFS system based on at least one of the first information and the second information may include: carrying the user data in the OTFS scheduling unit based on the second information, that is, carrying the user data at the location indicated by the second information, and converting the OTFS scheduling unit carrying the user data into the time-frequency domain based on the first information, and then converting it from the time-frequency domain to the time domain before sending it.

[0237] Optionally, in some embodiments, the network device may send user data to the terminal based on at least one of the first information and the second information.

[0238] Optionally, in some embodiments, the terminal may receive user data in the OTFS system based on at least one of the first information and the second information. Optionally, the method for the terminal to receive user data in the OTFS system based on at least one of the first information and the second information may include: after receiving the data, the terminal may first convert the received data from the time domain to the time-frequency domain, then determine the position corresponding to the OTFS scheduling unit carrying the user data in the time-frequency domain based on the first information, then convert the time-frequency domain position corresponding to the OTFS scheduling unit carrying the user data from the time-frequency domain to the DD domain to obtain the OTFS scheduling unit, and determine the position carrying the user data from the OTFS scheduling unit based on the second information to achieve data reception.

[0239] The indication method involved in the embodiment of the present disclosure may include at least one of steps S2101 and S2102. For example, step S2101 may be implemented as an independent embodiment, and step S2102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0240] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0241] FIG2B is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG2B , the embodiment of the present disclosure relates to an indication method, which is used in a communication system 100. The method includes:

[0242] Step 2201: The network device sends at least one of the first information and the second information.

[0243] Step 2202: The terminal sends user data in the OTFS system based on at least one of the first information and the second information.

[0244] Optionally, in some embodiments, the terminal may send user data to the network device based on at least one of the first information and the second information in the OTFS system.

[0245] Optionally, in some embodiments, the network device may receive user data in the OTFS system based on at least one of the first information and the second information.

[0246] For a detailed description of steps 2201 - 2202 , please refer to the above embodiment description.

[0247] The indication method involved in the embodiment of the present disclosure may include at least one of steps S2201 and S2202. For example, step S2201 may be implemented as an independent embodiment, and step S2202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0248] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0249] FIG3A is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to an indication method for a network device 101, and the method includes:

[0250] Step 3101: The network device sends at least one of the first information and the second information.

[0251] Step 3102: The network device sends user data in the OTFS system based on at least one of the first information and the second information.

[0252] For a detailed description of steps 3101 - 3102 , please refer to the above embodiment description.

[0253] The indication method involved in the embodiment of the present disclosure may include at least one of steps S3101 and S3102. For example, step S3101 may be implemented as an independent embodiment, and step S3102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0254] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0255] FIG3B is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to an indication method for a network device 101, and the method includes:

[0256] Step 3201: The network device sends at least one of the first information and the second information.

[0257] Step 3202: The network device receives user data in the OTFS system based on at least one of the first information and the second information.

[0258] For a detailed description of steps 3201 - 3202 , please refer to the above embodiment description.

[0259] The indication method involved in the embodiment of the present disclosure may include at least one of steps S3201 and S3202. For example, step S3201 may be implemented as an independent embodiment, and step S3202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0260] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0261] FIG3C is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to an indication method for a network device 101, and the method includes:

[0262] Step 3301: The network device sends at least one of the first information and the second information.

[0263] Optionally, the OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

[0264] Optionally, the first information includes at least one of the following:

[0265] A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit;

[0266] A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

[0267] Optionally, the first indication is used to indicate at least two of the starting position, duration, and end position of the first time domain position; the second indication is used to indicate at least two of the starting position, duration, and end position of the first frequency domain position.

[0268] Optionally, the first indication includes a first bitmap, each bit in the first bitmap corresponds to a time domain position, and a bit value carried by a bit in the first bitmap is used to indicate whether the time domain position corresponding to the bit in the first bitmap is the first time domain position;

[0269] The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

[0270] Optionally, the first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period;

[0271] The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

[0272] Optionally, the indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

[0273] Optionally, the time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

[0274] Optionally, the second information includes at least one of the following:

[0275] A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit;

[0276] A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

[0277] Optionally, the third indication is used to indicate at least two of the starting position, duration, and end position of the first delay domain position; the fourth indication is used to indicate at least two of the starting position, duration, and end position of the first Doppler domain position.

[0278] Optionally, the third indication includes a third bit map, each bit in the third bit map corresponds to a delay domain position, and the bit value carried by the bit in the third bit map is used to indicate whether the delay domain position corresponding to the bit in the third bit map is the first delay domain position;

[0279] The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

[0280] Optionally, the third indication is used to indicate at least one of a period of the first delay domain position, a starting position of the first delay domain position within the period, and a duration of the first delay domain position within the period;

[0281] The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a duration of the first Doppler domain position within the period.

[0282] Optionally, the indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

[0283] Optionally, P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

[0284] Optionally, the method further includes at least one of the following:

[0285] The network device sends user data in the OTFS system based on at least one of the first information and the second information;

[0286] The network device receives user data in the OTFS system based on at least one of the first information and the second information.

[0287] For a detailed description of step 3301, please refer to the above embodiment description.

[0288] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0289] FIG4A is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to an indication method, which is used in a terminal 102 and includes:

[0290] Step 4101: The terminal receives at least one of the first information and the second information.

[0291] Step 4102: The terminal receives user data in the OTFS system based on at least one of the first information and the second information.

[0292] For a detailed description of steps 4101-4102, please refer to the above embodiment description.

[0293] The indication method involved in the embodiment of the present disclosure may include at least one of steps S4101 and S4102. For example, step S4101 may be implemented as an independent embodiment, and step S4102 may be implemented as an independent embodiment.

[0294] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0295] FIG4B is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to an indication method for terminal 102, the method comprising:

[0296] Step 4201: The terminal receives at least one of the first information and the second information.

[0297] Step 4202: The terminal sends user data in the OTFS system based on at least one of the first information and the second information.

[0298] For a detailed description of steps 4201-4202, please refer to the above embodiment description.

[0299] The indication method involved in the embodiment of the present disclosure may include at least one of steps S4201 and S4202. For example, step S4201 may be implemented as an independent embodiment, and step S4202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0300] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0301] FIG4C is an interactive diagram of an indication method according to an embodiment of the present disclosure. As shown in FIG4B , an embodiment of the present disclosure relates to an indication method for terminal 102, the method comprising:

[0302] Step 4301: The terminal receives at least one of the first information and the second information.

[0303] Optionally, the OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

[0304] Optionally, the first information includes at least one of the following:

[0305] A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit;

[0306] A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

[0307] Optionally, the first indication is used to indicate at least two of the starting position, duration, and end position of the first time domain position; the second indication is used to indicate at least two of the starting position, duration, and end position of the first frequency domain position.

[0308] Optionally, the first indication includes a first bitmap, each bit in the first bitmap corresponds to a time domain position, and a bit value carried by a bit in the first bitmap is used to indicate whether the time domain position corresponding to the bit in the first bitmap is the first time domain position;

[0309] The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

[0310] Optionally, the first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period;

[0311] The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

[0312] Optionally, the indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

[0313] Optionally, the time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

[0314] Optionally, the second information includes at least one of the following:

[0315] A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit;

[0316] A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

[0317] Optionally, the third indication is used to indicate at least two of the starting position, duration, and end position of the first delay domain position; the fourth indication is used to indicate at least two of the starting position, duration, and end position of the first Doppler domain position.

[0318] Optionally, the third indication includes a third bit map, each bit in the third bit map corresponds to a delay domain position, and the bit value carried by the bit in the third bit map is used to indicate whether the delay domain position corresponding to the bit in the third bit map is the first delay domain position;

[0319] The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

[0320] Optionally, the third indication is used to indicate at least one of a period of the first delay domain position, a starting position of the first delay domain position within the period, and a duration of the first delay domain position within the period;

[0321] The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a duration of the first Doppler domain position within the period.

[0322] Optionally, the indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

[0323] Optionally, P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

[0324] Optionally, the method further includes at least one of the following:

[0325] The terminal receives user data in the OTFS system based on at least one of the first information and the second information;

[0326] The terminal sends user data in the OTFS system based on at least one of the first information and the second information.

[0327] For a detailed description of step 4301, please refer to the above embodiment description.

[0328] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0329] FIG5 is a flow chart of an indication method according to an embodiment of the present disclosure. As shown in FIG5 , an embodiment of the present disclosure relates to an indication method for a communication system, wherein the method includes at least one of the following:

[0330] Step 5101: The network device sends at least one of the first information and the second information.

[0331] Step 5102: The terminal receives at least one of the first information and the second information.

[0332] Optional implementations of steps 5101 and 5102 may refer to the description of the above embodiment.

[0333] In some embodiments, the above method may include the methods of the above embodiments of the communication system side, network device side, terminal side, etc., which will not be repeated here.

[0334] The indication method involved in the embodiment of the present disclosure may include at least one of steps S5101 and S5102. For example, step S5101 may be implemented as an independent embodiment, and step S5102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0335] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0336] The following is an exemplary introduction to the above method.

[0337] 1. Network equipment

[0338] 1. Determine the OTFS modulation unit (the two-dimensional grid of OTFS modulation). Relevant references include any of the following:

[0339] a. In the delay-Doppler domain, the symbol spacing in the delay direction is 1 / (MΔf), and the spacing in the Doppler frequency shift direction is 1 / (NT)

[0340] 2. Indicates the time domain and frequency domain location of the OTFS modulation unit

[0341] Define the indication granularity in the time-frequency domain:

[0342] Time domain slot: a continuous period of time, corresponding to L symbols in the time domain

[0343] Frequency domain subband: A continuous section of frequency domain resources, corresponding to K subcarriers

[0344] a. Time domain position indication information:

[0345] i. Continuous indication mode: indicates the starting position and continuous length, and the indication granularity is slot

[0346] In addition, you can group slots and bind them to N consecutive slots. slot The slots are grouped together, indicating the starting position and duration of the group, and indicating that the granularity is one group.

[0347] ii.Bitmap method:

[0348] The time domain corresponds to a bit string, and the first bit value indicates that the slot is allocated.

[0349] In addition, slots can be grouped and bound, with one bit value corresponding to and indicating one group.

[0350] iii. Periodic indication method, the indication information includes:

[0351] ─ Cycle

[0352] ─The starting point within the cycle, that is, the offset value within the cycle

[0353] ─ Duration of the cycle

[0354] In addition, slots can be grouped and bound, indicating that the granularity is a group.

[0355] b. Frequency domain position indication information

[0356] Reuse the above "time domain position indication information" method and change the indication content to "subband"

[0357] 3. Indicates the location of user data in the OTFS modulation unit

[0358] Indicates the location of user data in the DD field of the OTFS modulation unit.

[0359] a. The delay domain uses P consecutive OTFS symbols as the indication granularity; the Doppler domain uses Q consecutive OTFS subcarriers as the indication granularity

[0360] Among them, P and Q are positive integers.

[0361] b. The position indication information of the delay domain in the OTFS modulation unit:

[0362] i. Continuous indication mode: indicates the starting position and continuous length, with an indication granularity of P OTFS symbols.

[0363] ii.Bitmap method

[0364] The time domain corresponds to a bit string, and the first bit value indicates that the P OTFS symbols are allocated.

[0365] iii. Periodic indication mode, the indication granularity is P OTFS symbols, and the indication information includes:

[0366] ─ Cycle

[0367] ─The starting point within the cycle, that is, the offset value within the cycle

[0368] ─ Duration of the cycle

[0369] c. Within the OTFS modulation unit, the Doppler domain position indication information reuses the relevant description of b above, where the indication content is replaced with "Q OTFS subcarriers"

[0370] 2. Terminal Equipment

[0371] Among them, when the network device determines the indication information related to the above-mentioned "time domain and frequency domain positions of the OTFS modulation unit, and the position of the user data in the DD domain of the OTFS modulation unit", it can perform a sending operation to send the determined relevant indication information, and the terminal device can perform a "reverse operation", that is, receive the relevant indication information.

[0372] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0373] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0374] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution 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 relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by 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 implementing the hardware circuit configuration 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. In addition, 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), a deep learning processing unit (DPU), etc.

[0375] FIG6A is a schematic diagram of the structure of the first indication device proposed in an embodiment of the present disclosure. As shown in FIG6A , the first indication device includes: a sending module for the network device to send at least one of the first information and the second information, the first information is used to indicate the position of the orthogonal time-frequency space OTFS scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the user data carried in the OTFS scheduling unit. Optionally, the above-mentioned sending module is used to execute the steps related to "sending" performed by the network device 101 in any of the above methods. Optionally, the first indication device also includes at least one of a receiving module and a processing module. The above-mentioned receiving module is used to execute the steps related to receiving performed by the network device 101 in any of the above methods. The above-mentioned processing module is used to execute the steps related to "processing" performed by the network device 101 in any of the above methods. No further details are given here.

[0376] Figure 6B is a structural diagram of the second indication device proposed in an embodiment of the present disclosure. As shown in Figure 6B, the second indication device includes: a receiving module for the terminal to receive at least one of the first information and the second information, the first information is used to indicate the position of the OTFS scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the user data carried in the OTFS scheduling unit. Optionally, the above-mentioned receiving module is used to execute the steps related to "reception" performed by the terminal 102 in any of the above methods. Optionally, the second indication device also includes at least one of a processing module and a sending module. The above-mentioned processing module is used to execute the steps related to processing performed by the terminal 102 in any of the above methods, and the above-mentioned sending module is used to execute the steps related to sending performed by the terminal 102 in any of the above methods. No further details are given here.

[0377] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0378] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the indicating device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0379] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0380] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0381] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0382] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0383] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0384] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0385] The chip 7200 includes one or more processors 7201 , and the processor 7201 is used to call instructions so that the chip 7200 executes any of the above methods.

[0386] In some embodiments, chip 7200 further includes one or more interface circuits 7202, which are connected to memory 7203. Interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and can be used to send signals to memory 7203 or other devices. For example, interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0387] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0388] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes 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 is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0389] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0390] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0391] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0392] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0393] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0394] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for indicating, characterized in that: The method comprises: The network device sends at least one of first information and second information, wherein the first information is used to indicate the position of an orthogonal time-frequency-space (OTFS) scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the OTFS scheduling unit carrying user data.

2. The method according to claim 1, characterized in that The OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

3. The method according to claim 1 or 2, characterized in that The first information includes at least one of the following: A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit; A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

4. The method according to claim 3, characterized in that The first indication is used to indicate at least two of the starting position, the duration, and the ending position of the first time domain position; and / or The second indication is used to indicate at least two of a starting position, a duration, and an ending position of the first frequency domain position.

5. The method according to claim 3, characterized in that The first indication includes a first bit map, each bit in the first bit map corresponds to a time domain position, and the bit value carried by the bit in the first bit map is used to indicate whether the time domain position corresponding to the bit in the first bit map is the first time domain position; and / or The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

6. The method according to claim 3, characterized in that The first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period; and / or The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

7. The method according to any one of claims 3 to 6, characterized in that: The indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

8. The method according to claim 7, characterized in that The time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

9. The method according to any one of claims 1 to 8, characterized in that: The second information includes at least one of the following: A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit; A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

10. The method according to claim 9, characterized in that The third indication is used to indicate at least two of the starting position, the duration, and the ending position of the first delay domain position; and / or The fourth indication is used to indicate at least two of a starting position, a duration, and an ending position of the first Doppler domain position.

11. The method according to claim 10, characterized in that The third indication includes a third bitmap, each bit in the third bitmap corresponds to a delay domain position, and the bit value carried by the bit in the third bitmap is used to indicate whether the delay domain position corresponding to the bit in the third bitmap is the first delay domain position; and / or The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

12. The method according to claim 9, characterized in that The third indication is used to indicate at least one of a period of the first delay domain position, a starting position of the first delay domain position within the period, and a duration of the first delay domain position within the period; and / or The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a continuous length of the first Doppler domain position within the period.

13. The method according to any one of claims 9 to 12, characterized in that: The indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

14. The method according to claim 13, characterized in that P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

15. The method according to any one of claims 1 to 14, characterized in that: The method further comprises at least one of the following: The network device sends user data in the OTFS system based on at least one of the first information and the second information; The network device receives user data in the OTFS system based on at least one of the first information and the second information.

16. A method of indicating, characterized in that: The method comprises: The terminal receives at least one of first information and second information, where the first information is used to indicate a position of an OTFS scheduling unit in a time-frequency domain, and the second information is used to indicate a position in the OTFS scheduling unit that carries user data.

17. The method according to claim 16, characterized in that The OTFS scheduling unit includes at least one OTFS symbol in the delay domain and at least one OTFS subcarrier in the Doppler domain.

18. The method according to claim 16 or 17, characterized in that The first information includes at least one of the following: A first indication, where the first indication is used to indicate a first time domain position corresponding to the OTFS scheduling unit; A second indication, where the second indication is used to indicate a first frequency domain position corresponding to the OTFS scheduling unit.

19. The method according to claim 18, characterized in that The first indication is used to indicate at least two of the starting position, the duration, and the ending position of the first time domain position; and / or The second indication is used to indicate at least two of a starting position, a duration, and an ending position of the first frequency domain position.

20. The method of claim 19, wherein: The first indication includes a first bit map, each bit in the first bit map corresponds to a time domain position, and the bit value carried by the bit in the first bit map is used to indicate whether the time domain position corresponding to the bit in the first bit map is the first time domain position; and / or The second indication includes a second bit map, each bit in the second bit map corresponds to a frequency domain position, and the bit value carried by the bit in the second bit map is used to indicate whether the frequency domain position corresponding to the bit in the second bit map is the first frequency domain position.

21. The method of claim 18, wherein: The first indication is used to indicate at least one of a period of the first time domain position, a starting position of the first time domain position within the period, and a duration of the first time domain position within the period; and / or The second indication is used to indicate at least one of a period of the first frequency domain position, a starting position of the first frequency domain position within the period, and a duration of the first frequency domain position within the period.

22. The method according to any one of claims 18 to 21, characterized in that: The indication granularity of the first indication is at least one time slot; the indication granularity of the second indication is at least one subband.

23. The method of claim 22, wherein: The time slot includes L symbols that are continuous in the time domain, and the subband includes K subcarriers that are continuous in the frequency domain, where L and K are positive integers.

24. The method according to any one of claims 16 to 23, characterized in that: The second information includes at least one of the following: A third indication, the third indication being used to indicate a first delay domain position carrying user data in the OTFS scheduling unit; A fourth indication is used to indicate a first Doppler domain position carrying user data in the OTFS scheduling unit.

25. The method of claim 24, wherein: The third indication is used to indicate at least two of the starting position, the duration, and the ending position of the first delay domain position; and / or The fourth indication is used to indicate at least two of a starting position, a duration, and an ending position of the first Doppler domain position.

26. The method of claim 25, wherein: The third indication includes a third bitmap, each bit in the third bitmap corresponds to a delay domain position, and the bit value carried by the bit in the third bitmap is used to indicate whether the delay domain position corresponding to the bit in the third bitmap is the first delay domain position; and / or The fourth indication includes a fourth bit map, each bit in the fourth bit map corresponds to a Doppler domain position, and the bit value carried by the bit in the fourth bit map is used to indicate whether the Doppler domain position corresponding to the bit in the fourth bit map is the first Doppler domain position.

27. The method of claim 26, wherein: The third indication is used to indicate at least one of a period of the first delay domain position, a starting position of the first delay domain position within the period, and a duration of the first delay domain position within the period; and / or The fourth indication is used to indicate at least one of a period of the first Doppler domain position, a starting position of the first Doppler domain position within the period, and a continuous length of the first Doppler domain position within the period.

28. The method according to any one of claims 24 to 27, characterized in that: The indication granularity of the third indication is P OTFS symbols; the indication granularity of the fourth indication is Q OTFS subcarriers; wherein P and Q are positive integers.

29. The method of claim 28, wherein: P is less than or equal to the total number of OTFS symbols included in the OTFS scheduling unit in the delay domain, and Q is less than or equal to the total number of OTFS subcarriers included in the OTFS scheduling unit in the Doppler domain.

30. The method according to any one of claims 16 to 29, characterized in that: The method further comprises at least one of the following: The terminal receives user data in the OTFS system based on at least one of the first information and the second information; The terminal sends user data in the OTFS system based on at least one of the first information and the second information.

31. A method of indicating, characterized in that: Applied to a communication system, the communication system includes a terminal and a network device, and the method includes: The network device sends at least one of first information and second information, wherein the first information is used to indicate the position of the OTFS scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the OTFS scheduling unit carrying user data; The terminal receives at least one of the first information and the second information.

32. A first indicating device, comprising: A sending module is used for a network device to send at least one of first information and second information, wherein the first information is used to indicate the position of an orthogonal time-frequency space (OTFS) scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the OTFS scheduling unit that carries user data.

33. A second indicating device, comprising: The receiving module is used for the terminal to receive at least one of the first information and the second information, wherein the first information is used to indicate the position of the OTFS scheduling unit in the time-frequency domain, and the second information is used to indicate the position of the OTFS scheduling unit carrying user data.

34. A network device, characterized in that: include: One or more processors; The processor is used to call instructions so that the network device executes the indication method described in any one of claims 1-15.

35. A terminal, characterized in that: include: One or more processors; The processor is used to call instructions so that the terminal executes the indication method described in any one of claims 16-30.

36. A communication system, characterized in that: It comprises a terminal and a network device, wherein the terminal is configured to implement the indication method described in any one of claims 1-15, and the network device is configured to implement the indication method described in any one of claims 16-30.

37. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device is caused to execute the indication method according to any one of claims 1-15 and 16-30.

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