Communication method, device and system and storage medium

Abstract

The invention relates to a communication method, device and system and a storage medium. The communication method comprises: a sending device determines a first DD domain resource allocated to a first receiving device; the first symbol sequence is mapped to a first resource particle set of a first DD domain resource, the second symbol sequence is mapped to a second resource particle set of the first DD domain resource, the first symbol sequence comprises symbols obtained through first constellation modulation, and the second symbol sequence comprises symbols obtained through second constellation modulation; the modulation order of the first constellation modulation is smaller than that of the second constellation modulation. The embodiments of the present disclosure can effectively reduce or control inter-symbol interference between resources allocated to different receiving devices, and improve spectral efficiency.

Description

Communication method, device, system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to communication methods, devices, systems, and storage media. Background Art

[0002] Orthogonal frequency division multiplexing (OFDM) systems perform poorly in high-speed mobility scenarios, such as high-speed rail. This led to the development of orthogonal time-frequency space (OTFS). The OTFS system maps data symbols to resource elements (REs) in the delay-Doppler (DD) domain. Due to channel dispersion in the DD domain, the symbols received by each DD-domain RE at the receiver are subject to interference from symbols in surrounding REs, particularly its neighboring REs. This is known as inter-symbol interference (ISI).

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a communication method, device, system, and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a sending device. The method includes:

[0006] Determining a first DD domain resource allocated to a first receiving device;

[0007] Mapping the first symbol sequence to a first resource element set of the first DD domain resource, and mapping the second symbol sequence to a second resource element set of the first DD domain resource;

[0008] The first symbol sequence includes symbols obtained through first constellation modulation, the second symbol sequence includes symbols obtained through second constellation modulation, and the modulation order of the first constellation modulation is smaller than the modulation order of the second constellation modulation.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a first receiving device. The method includes:

[0010] Determining the allocated first DD domain resources;

[0011] receiving a symbol sequence sent on the first DD domain resource, the symbol sequence including a first symbol sequence mapped to a first set of resource elements of the first DD domain resource and a second symbol sequence mapped to a second set of resource elements of the first DD domain resource;

[0012] The first symbol sequence includes symbols obtained through first constellation modulation, the second symbol sequence includes symbols obtained through second constellation modulation, and the modulation order of the first constellation modulation is smaller than the modulation order of the second constellation modulation.

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

[0014] a processing module, configured to determine a first DD domain resource allocated to a first receiving device; and further configured to map a first symbol sequence to a first resource element set of the first DD domain resource, and map a second symbol sequence to a second resource element set of the first DD domain resource;

[0015] The first symbol sequence includes symbols obtained through first constellation modulation, the second symbol sequence includes symbols obtained through second constellation modulation, and the modulation order of the first constellation modulation is smaller than the modulation order of the second constellation modulation.

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

[0017] a processing module, configured to determine the allocated first DD domain resources;

[0018] a transceiver module, configured to receive a symbol sequence sent on the first DD domain resource, the symbol sequence comprising a first symbol sequence mapped to a first resource element set of the first DD domain resource, and a second symbol sequence mapped to a second resource element set of the first DD domain resource;

[0019] The first symbol sequence includes symbols obtained through first constellation modulation, the second symbol sequence includes symbols obtained through second constellation modulation, and the modulation order of the first constellation modulation is smaller than the modulation order of the second constellation modulation.

[0020] According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0021] one or more processors;

[0022] The communication device is used to execute the communication method proposed according to the first aspect of the embodiment of this disclosure.

[0023] According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0024] one or more processors;

[0025] The communication device is used to execute the communication method proposed in the second aspect of the embodiment of this disclosure.

[0026] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a sending device and a receiving device, wherein the sending device is configured to implement the communication method proposed in the first aspect of the embodiment of the present disclosure, and the receiving device is configured to implement the communication method proposed in the second aspect of the embodiment of the present disclosure.

[0027] According to the eighth aspect of the embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method proposed in the first aspect of the embodiment of the present disclosure, or the communication method proposed in the second aspect of the embodiment of the present disclosure.

[0028] The embodiments of the present disclosure can effectively reduce or control inter-symbol interference between resources allocated to different receiving devices, and improve spectrum efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0030] FIG1A is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0031] FIG1B is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0032] FIG2 is an exemplary schematic diagram of a signal transmission principle based on OTFS according to an embodiment of the present disclosure.

[0033] FIG3 is an exemplary schematic diagram of protecting RE according to an embodiment of the present disclosure.

[0034] FIG4 is a schematic diagram of an exemplary interaction of a communication method provided according to an embodiment of the present disclosure.

[0035] FIG5A is an exemplary schematic diagram of a first DD domain resource provided according to an embodiment of the present disclosure.

[0036] FIG5B is an exemplary schematic diagram of a first DD domain resource provided according to an embodiment of the present disclosure.

[0037] FIG5C is an exemplary schematic diagram of a first DD domain resource provided according to an embodiment of the present disclosure.

[0038] FIG5D is an exemplary schematic diagram of a first DD domain resource and a second DD domain resource provided according to an embodiment of the present disclosure.

[0039] FIG5E is an exemplary schematic diagram of a first DD domain resource and a second DD domain resource provided according to an embodiment of the present disclosure.

[0040] FIG6A is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0041] FIG6B is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0042] FIG6C is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0043] FIG6D is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0044] FIG6E is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0045] FIG7A is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0046] FIG7B is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0047] FIG7C is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0048] FIG7D is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure.

[0049] FIG8A is an exemplary schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0050] FIG8B is an exemplary schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0051] FIG9A is an exemplary schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0052] FIG9B is an exemplary schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0053] The embodiments of the present disclosure provide a communication method, device, system, and storage medium.

[0054] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a transmitting device, and the method includes: determining a first DD domain resource allocated to a first receiving device; mapping a first symbol sequence to a first resource particle set of the first DD domain resource, and mapping a second symbol sequence to a second resource particle set of the first DD domain resource; wherein the first symbol sequence includes symbols obtained by first constellation modulation, the second symbol sequence includes symbols obtained by second constellation modulation, and the modulation order of the first constellation modulation is less than the modulation order of the second constellation modulation.

[0055] In the above-described embodiment, when performing constellation modulation, the transmitting device may use two or more constellation modulation methods, and then map the constellation-modulated symbols to resource elements in the DD domain. High-order (or relatively high-order) constellation modulation can provide a faster data rate and a high level of spectral efficiency for the communication system, while low-order (or relatively low-order) constellation modulation means that the Euclidean distance between constellation points is larger, making it easier to eliminate inter-symbol interference. Therefore, the disclosed embodiments can effectively mitigate or control inter-symbol interference between resources allocated to different receiving devices, effectively reduce the number of guard REs, or even completely avoid the use of guard REs, thereby improving spectral efficiency.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the first resource particle set includes all or part of the peripheral resource particles of the first DD domain resource.

[0057] In the above embodiment, low-order (or relatively low-order) modulated symbols are transmitted on resource elements at the edge, near the edge, or periphery of the first DD domain resource, making it easier to eliminate interference with other receiving devices adjacent to the DD domain resource. Similarly, low-order (or relatively low-order) modulated symbols are also transmitted on resource elements at the edge, near the edge, or periphery of the other receiving devices, thus easily eliminating interference with the first receiving device from the other receiving devices. In some implementations, high-order (or relatively high-order) modulated symbols can be transmitted on internal resource elements to ensure communication quality.

[0058] In combination with some embodiments of the first aspect, in some embodiments, the first DD domain resource also includes at least one resource particle set located between the location of the first resource particle set and the location of the second resource particle set. According to the position of each resource particle set on the first DD domain resource, from the location of the second resource particle set to the location of the first resource particle set, the modulation order of the constellation modulation corresponding to the symbol mapped on each resource particle set decreases.

[0059] In the above embodiment, the first DD domain resource may include two or more resource particle sets. When the first DD domain resource includes more than two resource particle sets, in addition to the first resource particle set and the second resource particle set, it also includes at least one resource particle set located between the two. The modulation order of the constellation modulation corresponding to the symbols mapped on each resource particle set decreases monotonically. For example, the constellation modulation order corresponding to the symbols mapped on the inner second resource particle set, the constellation modulation order corresponding to the symbols mapped on the middle third resource particle set, and the constellation modulation order corresponding to the symbols mapped on the outer first resource particle set decrease in sequence. In this way, it is easy to eliminate the interference of the symbols on the middle resource particles to other receiving devices adjacent to the DD domain resource. Similarly, the interference of the symbols on the middle resource particles from the above-mentioned other receiving devices is also easy to eliminate.

[0060] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: sending first information to the receiving device, where the first information is used to indicate resource particle set information of the first DD domain resource.

[0061] In the above embodiment, the transmitting device may notify the first receiving device of the resource particle set information of the first DD domain resource, so that the first receiving device can receive the symbol sequence sent on the first DD domain resource according to the resource particle set information.

[0062] In combination with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following: the number of resource particle sets of the first DD domain resources; the continuous number of resource particles included in the delay domain by at least one resource particle set of the first DD domain resources; the continuous number of resource particles included in the Doppler domain by at least one resource particle set of the first DD domain resources.

[0063] In the above embodiment, the transmitting device may notify the first receiving device of at least one of the number of resource element sets of the first DD domain resource, the consecutive number of resource elements included in the delay domain of at least one resource element set, and the consecutive number of resource elements included in the Doppler domain of at least one resource element set. The consecutive number of resource elements included in a resource element set in the delay domain / Doppler domain may indicate the position of the resource element set.

[0064] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: sending second information to the receiving device, where the second information is used to indicate the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource.

[0065] In the above embodiment, the sending device can notify the first receiving device of the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource, so that the first receiving device can detect the signal on the corresponding resource particle according to the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource, thereby obtaining data symbols and information.

[0066] In combination with some embodiments of the first aspect, in some embodiments, the second information includes at least one of the following: the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the index of the modulation and coding scheme (MCS) corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the difference between the modulation orders of the constellation modulation corresponding to the symbols mapped on two resource particle sets of the first DD domain resource; the difference between the indices of the MCS corresponding to the symbols mapped on two resource particle sets of the first DD domain resource.

[0067] In combination with some embodiments of the first aspect, in some embodiments, the method also includes: sending third information to the first receiving device, where the third information is used to indicate the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resource, and the second DD domain resource is the DD domain resource allocated to the second receiving device.

[0068] In the above embodiment, the sending device can notify the first receiving device of the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resources, so that when the first receiving device detects the signal on the corresponding resource particle, it can estimate and eliminate the interference from the second receiving device based on the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resources, thereby obtaining data symbols and information.

[0069] In combination with some embodiments of the first aspect, in some embodiments, the third information includes at least one of the following: the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resources; the index of the MCS corresponding to the symbol mapped on at least one resource particle set of the second DD domain resources; the difference between the modulation order of the constellation modulation corresponding to the symbol mapped on a resource particle set of the second DD domain resources and the constellation modulation corresponding to the symbol mapped on a resource particle set of the first DD domain resources; the difference between the index of the MCS corresponding to the symbol mapped on a resource particle set of the second DD domain resources and the MCS corresponding to the symbol mapped on a resource particle set of the first DD domain resources.

[0070] In combination with some embodiments of the first aspect, in some embodiments, at least one of the following is agreed upon in the communication protocol: the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the index of the MCS corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the difference between the modulation orders of the constellation modulation corresponding to the symbols mapped on two resource particle sets of the first DD domain resource; the difference between the index of the MCS corresponding to the symbols mapped on two resource particle sets of the first DD domain resource; the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resource, which is a DD domain resource allocated to the second receiving device; the index of the MCS corresponding to the symbol mapped on at least one resource particle set of the second DD domain resource; the difference between the modulation order of the constellation modulation corresponding to the symbol mapped on a resource particle set of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on a resource particle set of the first DD domain resource; the difference between the index of the MCS corresponding to the symbol mapped on a resource particle set of the second DD domain resource and the MCS corresponding to the symbol mapped on a resource particle set of the first DD domain resource.

[0071] In the above embodiment, at least one of the above information can be specified in the protocol in advance, so the sending device may not need to indicate to the first receiving device the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resources and / or the second DD domain resources, or only needs to indicate part of the information, thereby saving the overhead of signaling indication.

[0072] In combination with some embodiments of the first aspect, in some embodiments, the MCS coding rates corresponding to the symbols mapped on the two resource element sets of the first DD domain resource are the same.

[0073] In the above embodiment, the MCS coding rates corresponding to the symbols mapped on any or specific two resource element sets of the first DD domain resources are the same, which can reduce the MCS indication of the sending device and save the signaling indication overhead.

[0074] In a second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a first receiving device, and the method includes: determining an allocated first DD domain resource; receiving a symbol sequence sent on the first DD domain resource, the symbol sequence including a first symbol sequence mapped to a first resource particle set of the first DD domain resource, and a second symbol sequence mapped to a second resource particle set of the first DD domain resource; wherein the first symbol sequence includes symbols obtained by first constellation modulation, the second symbol sequence includes symbols obtained by second constellation modulation, and the modulation order of the first constellation modulation is less than the modulation order of the second constellation modulation.

[0075] In combination with some embodiments of the second aspect, in some embodiments, the first resource particle set includes all or part of the peripheral resource particles of the first DD domain resource.

[0076] In combination with some embodiments of the second aspect, in some embodiments, the first DD domain resource also includes at least one resource particle set located between the location of the first resource particle set and the location of the second resource particle set. According to the position of each resource particle set on the first DD domain resource, from the location of the second resource particle set to the location of the first resource particle set, the modulation order of the constellation modulation corresponding to the symbol mapped on each resource particle set decreases.

[0077] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: receiving first information, where the first information is used to indicate resource particle set information of the first DD domain resource.

[0078] In combination with some embodiments of the second aspect, in some embodiments, the first information includes at least one of the following: the number of resource particle sets of the first DD domain resources; the continuous number of resource particles included in the delay domain of at least one resource particle set of the first DD domain resources; the continuous number of resource particles included in the Doppler domain of at least one resource particle set of the first DD domain resources.

[0079] In combination with some embodiments of the second aspect, in some embodiments, the method also includes: receiving second information, which is used to indicate the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource.

[0080] In combination with some embodiments of the second aspect, in some embodiments, the second information includes at least one of the following: the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the index of the MCS corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the difference between the modulation order of the constellation modulation corresponding to each symbol mapped on two resource particle sets of the first DD domain resource; the difference between the index of the MCS corresponding to each symbol mapped on two resource particle sets of the first DD domain resource.

[0081] In combination with some embodiments of the second aspect, in some embodiments, the method also includes: receiving third information, where the third information is used to indicate the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resource, and the second DD domain resource is a DD domain resource allocated to the second receiving device.

[0082] In combination with some embodiments of the second aspect, in some embodiments, the third information includes at least one of the following: the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resources; the index of the MCS corresponding to the symbol mapped on at least one resource particle set of the second DD domain resources; the difference between the modulation order of the constellation modulation corresponding to the symbol mapped on a resource particle set of the second DD domain resources and the constellation modulation corresponding to the symbol mapped on a resource particle set of the first DD domain resources; the difference between the index of the MCS corresponding to the symbol mapped on a resource particle set of the second DD domain resources and the MCS corresponding to the symbol mapped on a resource particle set of the first DD domain resources.

[0083] In combination with some embodiments of the second aspect, in some embodiments, at least one of the following is agreed upon in the communication protocol: the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the index of the MCS corresponding to the symbol mapped on at least one resource particle set of the first DD domain resource; the difference between the modulation orders of the constellation modulation corresponding to the symbols mapped on two resource particle sets of the first DD domain resource; the difference between the index of the MCS corresponding to the symbols mapped on two resource particle sets of the first DD domain resource; the modulation order of the constellation modulation corresponding to the symbol mapped on at least one resource particle set of the second DD domain resource, the second DD domain resource being a DD domain resource allocated to the second receiving device; the index of the MCS corresponding to the symbol mapped on at least one resource particle set of the second DD domain resource; the difference between the modulation order of the constellation modulation corresponding to the symbol mapped on a resource particle set of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on a resource particle set of the first DD domain resource; the difference between the index of the MCS corresponding to the symbol mapped on a resource particle set of the second DD domain resource and the MCS corresponding to the symbol mapped on a resource particle set of the first DD domain resource.

[0084] In combination with some embodiments of the second aspect, in some embodiments, the MCS coding rates corresponding to the symbols mapped on the two resource element sets of the first DD domain resources are the same.

[0085] In a third aspect, an embodiment of the present disclosure proposes a communication device, comprising: a processing module for determining a first DD domain resource allocated to a first receiving device; and also for mapping a first symbol sequence to a first resource particle set of the first DD domain resource, and mapping a second symbol sequence to a second resource particle set of the first DD domain resource; wherein the first symbol sequence includes symbols obtained by first constellation modulation, the second symbol sequence includes symbols obtained by second constellation modulation, and the modulation order of the first constellation modulation is less than the modulation order of the second constellation modulation.

[0086] In a fourth aspect, an embodiment of the present disclosure proposes a communication device, comprising: a processing module for determining an allocated first DD domain resource; a transceiver module for receiving a symbol sequence sent on the first DD domain resource, the symbol sequence including a first symbol sequence mapped to a first resource particle set of the first DD domain resource, and a second symbol sequence mapped to a second resource particle set of the first DD domain resource; wherein the first symbol sequence includes symbols obtained by first constellation modulation, the second symbol sequence includes symbols obtained by second constellation modulation, and the modulation order of the first constellation modulation is less than the modulation order of the second constellation modulation.

[0087] In a fifth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the communication device is used to execute the method described in the first aspect and the optional implementation manner of the first aspect.

[0088] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the communication device is used to execute the method described in the second aspect and the optional implementation manner of the second aspect.

[0089] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including a sending device and a receiving device, wherein the sending device is configured to implement the method described in the first aspect and the optional implementation method of the first aspect, and the receiving device is configured to implement the method described in the second aspect and the optional implementation method of the second aspect.

[0090] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the method described in the first and second aspects, and the optional implementation of the first and second aspects.

[0091] 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 and second aspects, and the optional implementation methods of the first and second aspects.

[0092] 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 methods described in the first and second aspects, and the optional implementations of the first and second aspects.

[0093] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in accordance with the first and second aspects, and the optional implementations of the first and second aspects.

[0094] It is understandable that the above-mentioned communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0095] The embodiments of the present disclosure provide a communication method, apparatus, system, and storage medium. In some embodiments, the terms communication method, resource mapping method, resource allocation method, etc. can be used interchangeably.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0101] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0102] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0103] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0109] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0110] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0111] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0112] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0113] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0114] 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.

[0115] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1A, the communication system 110 includes a transmitting device 1101 and a receiving device 1102. The transmitting device 1101 may be referred to as a transmitting end. The transmitting device 1101 includes a transmitting antenna and can transmit signals, such as communication signals and / or sensing signals. The receiving device 1102 may be referred to as a receiving end. The receiving device 1102 includes a receiving antenna and can receive signals, such as signals transmitted by the transmitting device 1101. In some embodiments, there may be one or more receiving devices 1102, for example, multiple receiving devices 1102 may include a first receiving device and a second receiving device. Optionally, inter-symbol interference (ISI) may exist between the resources of the multiple receiving devices. The first receiving device may be any receiving device, and the second receiving device may be described as an interfering device of the first receiving device. The DD domain resources allocated to the first receiving device are denoted as first DD domain resources, and the DD domain resources allocated to the second receiving device are denoted as second DD domain resources. The second DD domain resources are resources surrounding the first DD domain resources. Optionally, the second DD domain resources are adjacent to the first DD domain resources.

[0116] Alternatively, sending device 1101 may be a terminal or a network device. Alternatively, receiving device 1102 may be a terminal or a network device. For example, sending device 1101 may be a terminal, and receiving device 1102 may be a network device. In another example, sending device 1101 may be a terminal, and receiving device 1102 may be another terminal. In another example, sending device 1101 may be a network device, and receiving device 1102 may be a terminal. In another example, sending device 1101 may be a network device, and receiving device 1102 may be another network device.

[0117] FIG1B is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1B , the communication system 120 includes a terminal 1201 and a network device 1202. The network device 1202 includes, for example, an access network device. In some embodiments, there may be one or more terminals 1201, for example, multiple terminals 1201 include a first terminal and a second terminal. Optionally, inter-symbol interference (ISI) may exist between the resources of the multiple terminals. The first terminal may be any terminal, and the second terminal may be described as an interfering terminal of the first terminal.

[0118] In some embodiments, the terminal 1201 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, 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.

[0119] In some embodiments, the access network device is, for example, a node or device that accesses the terminal 1201 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 Wi-Fi system, but is not limited thereto.

[0120] In some embodiments, the technical solutions of the embodiments of the present disclosure may be applicable 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 may become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

[0121] 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.

[0122] 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.

[0123] The following embodiments of the present disclosure can be applied to the communication system 110 shown in FIG1A or a portion thereof, and can be applied to the communication system 120 shown in FIG1B or a portion thereof, but are not limited thereto. The entities shown in FIG1A and FIG1B are examples. The communication system may include all or part of the entities in FIG1A or FIG1B, or may include other entities other than those in FIG1A and FIG1B. The number and form of each entity are arbitrary. Each entity can be physical or virtual. The connection relationship between the entities is an example. The entities can be connected or disconnected. The connection can be in any manner, and can be direct or indirect, and can be wired or wireless.

[0124] 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 communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0125] It is worth noting that the following embodiments of the present disclosure can be applied to an orthogonal time frequency space (OTFS) system.

[0126] In cellular mobile networks, OFDM is widely used. In OFDM systems, adding a cyclic prefix (CP) effectively mitigates the impact of multipath delay. However, in high-speed mobile scenarios (such as high-speed rail), OFDM systems perform poorly. To address this issue, OTFS was proposed. In the communication system shown in Figure 1A, transmitting device 1101 may include an OTFS system signal / channel transmitter, and receiving device 1102 may include an OTFS system signal / channel receiver.

[0127] To facilitate understanding, we first provide an exemplary explanation of the signal transmission principle based on OTFS. As shown in Figure 2, in an OTFS system, data symbols are first mapped to the grid points of a two-dimensional resource grid in the delay-Doppler (DD) domain, denoted as d[k,l]. Then, they are transformed to the grid points of a two-dimensional resource grid in the time-frequency (TF) domain, denoted as X[n,m], using an inverse symplectic finite Fourier transform (ISFFT). The TF domain symbols are then subjected to a Heisenberg transform, and the resulting time domain signal is denoted as s(t). When the shaping filter in the Heisenberg transform is a rectangular function, the Heisenberg transform degenerates into an inverse discrete Fourier transform (IDFT). After the OTFS time domain signal passes through the time-varying channel h(τ,ν), the receiver first performs a Wigner transform on the received signal r(t), converting it to the TF domain. The transformed signal is denoted as Y[n,m]. Finally, a symplectic finite Fourier transform (SFFT) is performed on it to restore it to the DD domain to obtain an estimate of the data symbol, denoted as d'[k,l]. For ease of description, the grid points of the two-dimensional resource grid in the DD domain and the TF domain are collectively referred to as resource elements (RE).

[0128] In the OTFS system, after the ISFFT transform, the data symbols in each RE in the DD domain are spread across all REs in the TF domain, effectively experiencing the same frequency selectivity and time diversity of all REs in the TF domain. Therefore, all data symbols in the DD domain can be well approximated as experiencing the same time-invariant channel. This property directly impacts the design of the reference signal for the OTFS system. Ideally, the symbols received by the receiver in the DD domain are equal to the two-dimensional circular convolution of the DD domain symbols transmitted by the transmitter with the DD domain channel h(τ,ν). Thanks to this property, the OTFS system can equate a time-varying channel to a time-invariant channel in the DD domain, achieving full frequency and time diversity gains. The OTFS system outperforms the OFDM system at high Doppler frequencies. At the same time, due to channel dispersion in the DD domain, the symbols received by the receiver in each DD domain RE are subject to interference from symbols in surrounding REs (especially its neighbors), a phenomenon known as inter-symbol interference (ISI). This often requires nonlinear algorithms such as interference cancellation and / or message passing (MP) at the receiver side, making the receiver detection algorithm more complicated.

[0129] It is worth noting that, taking the receiving end as a UE, this ISI exists not only between symbols on multiple DD domain REs allocated to the same UE, but also between symbols on adjacent DD domain REs allocated to different UEs. Among them, if the ISI received by a symbol comes from symbols on other REs of the same UE, then this type of ISI can be eliminated by the above-mentioned nonlinear algorithm and relatively good performance can be achieved. If a symbol receives ISI from other UEs, then this type of ISI between UEs is more difficult to eliminate. Moreover, among the DD domain REs allocated to a UE, symbols on edge REs are more susceptible to ISI from other UEs, while symbols on non-edge REs receive ISI mainly from symbols on other REs of the same UE.

[0130] In some embodiments, to avoid interference between symbols on DD domain REs of different UEs, guard REs can be reserved when mapping data symbols to DD domain REs. As shown in Figure 3, the DD domain resources allocated to UE1, UE2, and UE3 are PDSCH1, PDSCH 2, and PDSCH 3, respectively. As can be seen from the figure, guard REs are reserved between the DD domain resources allocated to different UEs. In some embodiments, no data symbols are mapped to the guard REs. This solution results in a waste of resources, resulting in reduced spectral efficiency. Specifically, spectral efficiency depends on the size of the guard band (i.e., the number of guard REs).

[0131] In some embodiments, in order to eliminate interference between symbols on DD domain REs of different UEs, taking one UE as an example, when performing constellation modulation, two or more constellation modulations can be used, and the modulation order of one of the constellation modulations used is lower, or the modulation order of one of the constellation modulations used is lower than the modulation orders of other constellation modulations used.

[0132] Figure 4 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 4, the embodiment of the present disclosure relates to a communication method, which includes:

[0133] Step S4101: The sending device determines a first DD domain resource.

[0134] In some embodiments, the transmitting device may allocate DD domain resources to the receiving device. In this step, the transmitting device determines a first DD domain resource to allocate to the first receiving device. Optionally, there may be multiple receiving devices, and the transmitting device may allocate DD domain resources to each receiving device separately.

[0135] Step S4102: The sending device maps the first symbol sequence to a first resource element set of the first DD domain resource, and maps the second symbol sequence to a second resource element set of the first DD domain resource.

[0136] The first symbol sequence includes symbols obtained by first constellation modulation, and the second symbol sequence includes symbols obtained by second constellation modulation. The modulation order of the first constellation modulation is smaller than the modulation order of the second constellation modulation, that is, the number of constellation points of the first constellation modulation is smaller than the number of constellation points of the second constellation modulation. In this step, the transmitting device maps the symbols in the first symbol sequence to corresponding resource elements in the first resource element set, and maps the symbols in the second symbol sequence to corresponding resource elements in the second resource element set.

[0137] In some embodiments, the modulation order of the first constellation modulation is relatively low, that is, the first constellation modulation is low-order (or relatively low-order) modulation, for example, the first constellation modulation is Quadrature Phase Shift Keying (QPSK). In some embodiments, the modulation order of the second constellation modulation is relatively high, that is, the second constellation modulation is high-order (or relatively high-order) modulation, for example, the second constellation modulation is 64 Quadrature Amplitude Modulation (QAM), 256QAM, etc. It should be noted that in some embodiments, the first constellation modulation may not be limited to low-order modulation, for example, the modulation order of the first constellation modulation is relatively low or medium, and the second constellation modulation may not be limited to high-order modulation, for example, the modulation order of the second constellation modulation is relatively high or medium. The embodiments of the present disclosure do not limit the specific modulation orders of the first constellation modulation and the second constellation modulation.

[0138] It should be noted that the first DD domain resource may include two or more resource particle sets, and one resource particle set includes one or more resource particles on the first DD domain resource. For example, the first DD domain resource includes a first resource particle set and a second resource particle set. Optionally, in addition to the first resource particle set and the second resource particle set, the first DD domain resource may also include at least one resource particle set located between the position of the first resource particle set and the position of the second resource particle set. For example, the first DD domain resource includes a first resource particle set, a second resource particle set, and a third resource particle set, and the position of the third resource particle set on the first DD domain resource is located between the position of the first resource particle set and the position of the second resource particle set. The embodiment of the present disclosure does not limit the number of resource particle sets that the first DD domain resource may include. For example, the first DD domain resource may include M resource particle sets, where M is a positive integer greater than or equal to 2, wherein the symbols mapped on a resource particle set correspond to a constellation modulation, and the constellation modulations corresponding to the symbols mapped on different resource particle sets are different.

[0139] Different resource particle sets may be located at different positions on the first DD domain resource. In some embodiments, according to the position of each resource particle set on the first DD domain resource, the modulation order of the constellation modulation corresponding to the symbols mapped on each resource particle set decreases from the position of the second resource particle set to the position of the first resource particle set. In some embodiments, the first resource particle set is located at one or more edge positions of the first DD domain resource, that is, the first resource particle set includes all or part of the peripheral resource particles of the first DD domain resource. In some embodiments, the second resource particle set is located at the center position of the first DD domain resource. Optionally, from the center position to the edge position of the first DD domain resource, the modulation order of the constellation modulation corresponding to the symbols mapped on each resource particle set decreases.

[0140] Continuing with the above example, the transmitting device maps the third symbol sequence to the third resource particle set of the first DD domain resource, wherein the third symbol sequence includes symbols obtained by third constellation modulation, the modulation order of the first constellation modulation is smaller than the modulation order of the third constellation modulation, and the modulation order of the third constellation modulation is smaller than the modulation order of the second constellation modulation.

[0141] In some embodiments, resource elements included in a resource element set are continuous (adjacent) in the delay domain and / or Doppler domain.

[0142] In some embodiments, a resource particle set can be described as a layer of resource particles. In some embodiments, the first resource particle set can be described as an outer (outermost) layer of resource particles, the second resource particle set can be described as an inner (innermost) layer of resource particles, and in some embodiments, the third resource particle set can be described as an intermediate (second-outer) layer of resource particles.

[0143] The resource particle sets on the first DD domain resources are exemplarily described below by taking the first DD domain resources including two resource particle sets and three resource particle sets as examples.

[0144] Figure 5A is an exemplary schematic diagram illustrating different resource particle sets on a first DD domain resource according to an embodiment of the present disclosure. As shown in Figure 5A, the first DD domain resource includes two resource particle sets, namely, a first resource particle set and a second resource particle set, from the outside to the inside. Based on the positions of the two resource particle sets on the first DD domain resource, the first resource particle set can be described as the outer (outermost) resource particles, and the second resource particle set can be described as the inner (innermost) resource particles. According to implementations 1 to 6 in Figure 5A, the first resource particle set is located at one or more edges of the first DD domain resource, i.e., the first resource particle set includes some or all of the peripheral resource particles of the first DD domain resource; the second resource particle set includes the remaining resource particles in the first DD domain resource excluding the first resource particle set. In some implementations, the second resource particle set is located at the center of the first DD domain resource. It should be noted that Figure 5A only illustrates some, but not all, optional implementations when the first DD domain resource includes two resource particle sets, and the number of resource particles included in each resource particle set and their position on the first DD domain resource are not limited to those shown in Figure 5A.

[0145] In some embodiments, the position of a resource particle set on a first DD domain resource can be represented based on the consecutive number of resource particles included in the resource particle set in the delay domain and / or Doppler domain. As shown in Figure 5B, the first resource particle set is located at the three edges of the first DD domain resource, and its position on the first DD domain resource can be represented based on at least one of L1, L2, L3, L4, and L5. The second resource particle set is located at the remaining positions of the first DD domain resource excluding the first resource particle set, and its position on the first DD domain resource can be represented based on at least one of L6 and L7.

[0146] In some embodiments, the position of each resource particle set on the first DD domain resource can be determined by the transmitting device based on the size of the inter-symbol interference (ISI) received by the first DD domain resource from other receiving devices. The interference size depends on the delay spread and Doppler spread of the channel. Optionally, for resource particles on the first DD domain resource that are subject to smaller ISI from other receiving devices (such as resource particles at the center position / near the center position / inside the first DD domain resource), they can be used to transmit high-order (or higher-order) modulated symbols, and for resource particles on the first DD domain resource that are subject to larger ISI from other receiving devices (such as resource particles at the edge position / near the edge position / periphery of the first DD domain resource), they can be used to transmit low-order (or lower-order) modulated symbols.

[0147] Generally speaking, symbols on resource elements at the center, near the center, or within the first DD domain resource are subject to ISI primarily from symbols on adjacent resource elements, while symbols on resource elements at the edge, near the edge, or periphery of the first DD domain resource are subject to ISI primarily from symbols on surrounding resource elements allocated to other receiving devices. Therefore, the first set of resource elements can be located at the edge, near the edge, or periphery of the first DD domain resource to transmit low-order (or relatively low-order) modulated symbols, making it easier to eliminate interference from symbols on resource elements at the edge, near the edge, or periphery of the first DD domain resource to other adjacent receiving devices. Similarly, resource elements at the edge, near the edge, or periphery of these other receiving devices also transmit low-order (or relatively low-order) modulated symbols, making it easier to eliminate interference from these other receiving devices to symbols on resource elements at the edge, near the edge, or periphery of the first DD domain resource. Thus, embodiments of the present disclosure can easily eliminate interference from edge resource elements to other receiving devices, as well as interference from other receiving devices. In some implementations, high-order (or relatively high-order) modulated symbols may be transmitted on resource elements within the first DD domain resource to ensure communication quality.

[0148] Figure 5C is an exemplary schematic diagram of different resource particle sets on the first DD domain resource according to an embodiment of the present disclosure. As shown in Figure 5C, the first DD domain resource includes three resource particle sets, which are the first resource particle set, the third resource particle set, and the second resource particle set from the outside to the inside. According to the positions of the three resource particle sets on the first DD domain resource, the first resource particle set can be described as the outer layer (outermost layer) resource particles, the third resource particle set can be described as the middle layer (sub-outer layer) resource particles, and the second resource particle set can be described as the inner layer (innermost layer) resource particles. According to implementations 1 to 7 in FIG5C , the first resource particle set is located at one or more edges of the first DD domain resource, that is, the first resource particle set includes some or all peripheral resource particles of the first DD domain resource; the third resource particle set is located between the location of the first resource particle set and the location of the second resource particle set of the first DD domain resource, or described as the third resource particle set being located at one or more edges of the first remaining resource, the first remaining resource includes the remaining resource particles in the first DD domain resource excluding the first resource particle set, that is, the third resource particle set includes some or all peripheral resource particles of the first remaining resource; the second resource particle set includes the remaining resource particles in the first DD domain resource excluding the first resource particle set and the third resource particle set. It should be noted that FIG5C only illustrates some, but not all, optional implementations when the first DD domain resource includes three resource particle sets, and the number of resource particles included in each resource particle set and their location on the first DD domain resource are not limited to those shown in FIG5C .

[0149] As can be seen from the foregoing description, in some embodiments, resource particles on the first DD domain resource that are subject to smaller ISI from other receiving devices can be used to transmit high-order (or higher-order) modulated symbols, resource particles on the first DD domain resource that are subject to slightly larger ISI from other receiving devices can be used to transmit medium-order modulated symbols, and resource particles on the first DD domain resource that are subject to larger ISI from other receiving devices can be used to transmit low-order (or lower-order) modulated symbols. Therefore, the first resource particle set can be located at the edge / near the edge / periphery of the first DD domain resource to transmit low-order (or lower-order) modulated symbols, and the third resource particle set can be located between the edge and center positions of the first DD domain resource to transmit medium-order modulated symbols, so that the embodiments of the present disclosure can easily eliminate the interference caused by the edge resource particles and the intermediate resource particles to other receiving devices, and can also easily eliminate interference from other receiving devices.

[0150] According to the above implementation method, on the one hand, transmitting high-order (or higher-order) modulated symbols on resource elements at the center position / near the center position / inside the first DD domain resource can provide the communication system with a faster data rate and a high level of spectral efficiency. On the other hand, transmitting low-order (or lower-order) modulated symbols on resource elements at the edge position / near the edge position / periphery of the first DD domain resource can avoid the symbols on the edge resource elements from interfering with other receiving devices and make it easy to eliminate the inter-symbol interference from other receiving devices on the symbols on the edge resource elements.

[0151] It is understandable that for the case where the first DD domain resource includes four or more resource particle sets, its optional implementation methods can be referred to the relevant descriptions of Figures 5A, 5B, and 5C. For example, the first DD domain resource also includes a fourth resource particle set, and the fourth resource particle set is located at one or more edges of the second remaining resource. The second remaining resource includes the remaining resource particles in the first DD domain resource excluding the first resource particle set and the third resource particle set, that is, the fourth resource particle set includes some or all peripheral resource particles of the second remaining resource. The second resource particle set includes the remaining resource particles in the first DD domain resource excluding the first resource particle set, the third resource particle set, and the fourth resource particle set.

[0152] Step S4103: The sending device sends the first information.

[0153] In some embodiments, the first information is used to indicate resource element set information of the first DD domain resource. Optionally, the receiving device receives the first information and receives a symbol sequence sent on the first DD domain resource according to the first information.

[0154] In some embodiments, the name of the first information is not limited, and it can be, for example, "resource information", "resource particle set information", "resource layer information", etc.

[0155] In some embodiments, the first information may include at least one of the following:

[0156] The number of resource element sets of the first DD domain resources;

[0157] a consecutive number of resource elements included in the delay domain by at least one resource element set of the first DD domain resources;

[0158] The continuous number of resource elements included in the Doppler domain by at least one resource element set of the first DD domain resource.

[0159] In some embodiments, the first information is carried in at least one of the following:

[0160] Downlink Control Information (DCI);

[0161] Media Access Control (MAC) Control Element (CE);

[0162] Radio Resource Control (RRC);

[0163] Sidelink control information (SCI).

[0164] In some embodiments, the sending device sends the first information to the receiving device via signaling. Optionally, the signaling may include at least one of the following signaling:

[0165] Uu interface: DCI, MAC CE and RRC signaling;

[0166] PC5 interface: SCI and PC5RRC signaling.

[0167] In some embodiments, step S4103 is an optional step. For example, the first information may be specified by a communication protocol.

[0168] Step S4104: The sending device sends the second information.

[0169] In some embodiments, the second information is used to indicate a modulation order of constellation modulation corresponding to symbols mapped on at least one set of resource elements of the first DD domain resource. It should be noted that the second information indicating the modulation order of constellation modulation corresponding to symbols mapped on at least one set of resource elements of the first DD domain resource may be an explicit and / or implicit indication. Optionally, the first receiving device receives the second information and, based on the second information, receives a symbol sequence sent on the first DD domain resource.

[0170] In some embodiments, the name of the second information is not limited, and it can be, for example, "modulation information", "modulation order information", "modulation mode information", "modulation coding information", etc.

[0171] In some embodiments, the second information may include at least one of the following:

[0172] a modulation order of constellation modulation corresponding to symbols mapped to at least one resource element set of the first DD domain resources;

[0173] An index of a modulation and coding scheme (MCS) corresponding to symbols mapped to at least one resource element set of the first DD domain resource;

[0174] The difference in modulation orders of constellation modulation corresponding to the symbols mapped on the two resource element sets of the first DD domain resource;

[0175] The difference between the MCS indexes corresponding to the symbols mapped on the two resource element sets of the first DD domain resource.

[0176] An MCS includes a modulation order and a coding rate. The corresponding modulation order and / or coding rate can be determined according to an MCS index.

[0177] In some embodiments, at least one of the following may be specified in the communication protocol:

[0178] a modulation order of constellation modulation corresponding to symbols mapped to at least one resource element set of the first DD domain resources;

[0179] An index of an MCS corresponding to a symbol mapped to at least one resource element set of the first DD domain resource;

[0180] The difference in modulation orders of constellation modulation corresponding to the symbols mapped on the two resource element sets of the first DD domain resource;

[0181] The difference between the MCS indexes corresponding to the symbols mapped on the two resource element sets of the first DD domain resource.

[0182] In some embodiments, the MCS coding rate (code rate) corresponding to the symbols mapped on the two resource element sets of the first DD domain resource is the same. Optionally, the protocol stipulates that the MCS coding rate corresponding to the symbols mapped on any or specific two resource element sets (or all resource element sets) of the first DD domain resource is the same. Optionally, the sending device sends indication information to indicate that the MCS coding rate corresponding to the symbols mapped on any or specific two resource element sets (or all resource element sets) of the first DD domain resource is the same. This can reduce the MCS indication of the sending device and save the overhead of signaling indication.

[0183] It should be noted that, in some embodiments, "at least one resource particle set" can be any one or more resource particle sets, or a specific one or more resource particle sets, and "two resource particle sets" can be any two resource particle sets, or a specific two resource particle sets.

[0184] Taking implementation 6 shown in FIG5A as an example, the first DD domain resource includes a first resource particle set (outermost resource particles) and a second resource particle set (innermost resource particles). The second information may include at least one of the following, and / or at least one of the following may be specified in the protocol:

[0185] The modulation order of the constellation modulation corresponding to the symbols mapped on the outermost resource element of the first DD domain resource;

[0186] The modulation order of the constellation modulation corresponding to the symbol mapped on the innermost resource element of the first DD domain resource;

[0187] The index of the MCS corresponding to the symbol mapped on the outermost resource element of the first DD domain resource;

[0188] The index of the MCS corresponding to the symbol mapped on the innermost resource element of the first DD domain resource;

[0189] The difference in modulation order between the constellation modulation corresponding to the symbol mapped on the outermost resource element of the first DD domain resource and the constellation modulation corresponding to the symbol mapped on the innermost resource element;

[0190] The difference between the indexes of the MCS corresponding to the symbols mapped on the outermost resource element of the first DD domain resource and the MCS corresponding to the symbols mapped on the innermost resource element.

[0191] Taking implementation 7 shown in FIG5C as an example, the first DD domain resources include a first resource particle set (outermost resource particles), a third resource particle set (second-outermost resource particles), and a second resource particle set (innermost resource particles). The second information may include at least one of the following, and / or at least one of the following is specified in the protocol:

[0192] The modulation order of the constellation modulation corresponding to the symbols mapped on the outermost resource element of the first DD domain resource;

[0193] The modulation order of the constellation modulation corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource;

[0194] The modulation order of the constellation modulation corresponding to the symbol mapped on the innermost resource element of the first DD domain resource;

[0195] The index of the MCS corresponding to the symbol mapped on the outermost resource element of the first DD domain resource;

[0196] The index of the MCS corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource;

[0197] The index of the MCS corresponding to the symbol mapped on the innermost resource element of the first DD domain resource;

[0198] The difference in modulation order between the constellation modulation corresponding to the symbol mapped on the outermost resource element of the first DD domain resource and the constellation modulation corresponding to the symbol mapped on the second outermost resource element;

[0199] The difference in modulation order between the constellation modulation corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource and the constellation modulation corresponding to the symbol mapped on the innermost resource element;

[0200] The difference in modulation order between the constellation modulation corresponding to the symbol mapped on the outermost resource element of the first DD domain resource and the constellation modulation corresponding to the symbol mapped on the innermost resource element;

[0201] The difference between the MCS index corresponding to the symbol mapped on the outermost resource element of the first DD domain resource and the MCS index corresponding to the symbol mapped on the second outermost resource element;

[0202] The difference between the MCS index corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource and the MCS index corresponding to the symbol mapped on the innermost resource element;

[0203] The difference between the indexes of the MCS corresponding to the symbols mapped on the outermost resource element of the first DD domain resource and the MCS corresponding to the symbols mapped on the innermost resource element.

[0204] For example, it can be stipulated in the protocol that the constellation modulation order corresponding to the symbols mapped on the outermost resource particles is 2, corresponding to QPSK, and by sending the second information, it can be indicated that the constellation modulation order corresponding to the symbols mapped on the second-outermost resource particles is 4, corresponding to 16QAM, and the constellation modulation order corresponding to the symbols mapped on the innermost resource particles is 6, corresponding to 64QAM.

[0205] In some embodiments, the second information is carried in at least one of the following: DCI; MAC CE; RRC; SCI.

[0206] In some embodiments, the sending device sends the second information to the first receiving device via signaling. Optionally, the signaling may include at least one of the following signaling:

[0207] Uu interface: DCI, MAC CE and RRC signaling;

[0208] PC5 interface: SCI and PC5RRC signaling.

[0209] In some embodiments, step S4104 is optional. For example, the second information may be specified by a communication protocol. In some implementations, if the first receiving device does not receive the second information, the modulation order of the constellation modulation corresponding to the symbols mapped to each resource element set of the first DD domain resource may be determined based on protocol specifications or default values.

[0210] Step S4105: The sending device sends the third information.

[0211] In some embodiments, the third information is used to indicate a modulation order of constellation modulation corresponding to symbols mapped to at least one set of resource elements of the second DD domain resource. The second DD domain resource is a DD domain resource allocated to the second receiving device. Optionally, the second DD domain resource is adjacent to the first DD domain resource. It should be noted that the third information indicating the modulation order of constellation modulation corresponding to symbols mapped to at least one set of resource elements of the second DD domain resource may be an explicit and / or implicit indication.

[0212] In some embodiments, the name of the third information is not limited, and it can be, for example, "modulation information", "modulation order information", "modulation mode information", "modulation coding information", etc.

[0213] In some embodiments, the first receiving device receives the third information and, based on the third information, receives a symbol sequence sent on the first DD domain resource. For example, when detecting symbols on a set of resource elements in the first DD domain resource, the first receiving device estimates and eliminates interference from symbols mapped to a set of resource elements in the second DD domain resource from the second receiving device based on the third information, thereby obtaining data symbols and information.

[0214] In some embodiments, the third information may include at least one of the following:

[0215] a modulation order of constellation modulation corresponding to symbols mapped to at least one resource element set of the second DD domain resources;

[0216] an index of an MCS corresponding to a symbol mapped to at least one resource element set of the second DD domain resource;

[0217] a difference in modulation order between constellation modulation corresponding to a symbol mapped on a set of resource elements of the second DD domain resource and constellation modulation corresponding to a symbol mapped on a set of resource elements of the first DD domain resource;

[0218] The difference between the indexes of the MCS corresponding to the symbols mapped on a set of resource elements of the second DD domain resources and the MCS corresponding to the symbols mapped on a set of resource elements of the first DD domain resources.

[0219] In some embodiments, at least one of the following may be specified in the communication protocol:

[0220] a modulation order of constellation modulation corresponding to symbols mapped to at least one resource element set of the second DD domain resources;

[0221] an index of an MCS corresponding to a symbol mapped to at least one resource element set of the second DD domain resource;

[0222] a difference in modulation order between constellation modulation corresponding to a symbol mapped on a set of resource elements of the second DD domain resource and constellation modulation corresponding to a symbol mapped on a set of resource elements of the first DD domain resource;

[0223] The difference between the indexes of the MCS corresponding to the symbols mapped on a set of resource elements of the second DD domain resources and the MCS corresponding to the symbols mapped on a set of resource elements of the first DD domain resources.

[0224] It should be noted that, in some embodiments, the above-mentioned "a resource particle set" may be an arbitrary or specific resource particle set.

[0225] Figure 5D shows an exemplary schematic diagram of the first DD domain resources of the first receiving device and the second DD domain resources of the second receiving device. As shown in Figure 5D, the first DD domain resources include two resource particle sets (two layers of resource particles), and the second DD domain resources also include two resource particle sets (two layers of resource particles).

[0226] In some embodiments, the third information may include at least one of the following:

[0227] The modulation order of the constellation modulation corresponding to the symbols mapped on the outermost resource element of the second DD domain resource;

[0228] The index of the MCS corresponding to the symbol mapped on the outermost resource element of the second DD domain resource;

[0229] a difference in modulation order between the constellation modulation corresponding to the symbol mapped on the outermost resource element of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on the outermost resource element of the first DD domain resource;

[0230] The difference between the index of the MCS corresponding to the symbol mapped on the outermost resource element of the second DD domain resource and the index of the MCS corresponding to the symbol mapped on the outermost resource element of the first DD domain resource.

[0231] Figure 5E shows an exemplary schematic diagram of the first DD domain resources of the first receiving device and the second DD domain resources of the second receiving device. As shown in Figure 5E, the first DD domain resources include three resource particle sets (three-layer resource particles), and the second DD domain resources also include three resource particle sets (three-layer resource particles).

[0232] In some embodiments, the third information may include at least one of the following:

[0233] a difference in modulation order between the constellation modulation corresponding to the symbol mapped on the outermost resource element of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on the outermost resource element of the first DD domain resource;

[0234] The difference in modulation order between the constellation modulation corresponding to the symbol mapped on the outermost resource element of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource;

[0235] The difference in modulation order between the constellation modulation corresponding to the symbol mapped on the second outermost resource element of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on the outermost resource element of the first DD domain resource;

[0236] a difference in modulation order between the constellation modulation corresponding to the symbol mapped on the second outermost resource element of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource;

[0237] The difference between the MCS corresponding to the symbol mapped on the outermost resource element of the second DD domain resource and the MCS corresponding to the symbol mapped on the outermost resource element of the first DD domain resource;

[0238] The difference between the MCS corresponding to the symbol mapped on the outermost resource element of the second DD domain resource and the MCS corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource;

[0239] The difference between the MCS corresponding to the symbol mapped on the second outermost resource element of the second DD domain resource and the MCS corresponding to the symbol mapped on the outermost resource element of the first DD domain resource;

[0240] The difference between the indexes of the MCS corresponding to the symbol mapped on the second outermost resource element of the second DD domain resource and the MCS corresponding to the symbol mapped on the second outermost resource element of the first DD domain resource.

[0241] It should be noted that the number of resource element sets included in the DD domain resources allocated to different receiving devices may be different.

[0242] In some embodiments, the third information may be carried in at least one of the following: DCI; MAC CE; RRC; SCI.

[0243] In some embodiments, the sending device sends the third information to the first receiving device via signaling. Optionally, the signaling may include at least one of the following:

[0244] Uu interface: DCI, MAC CE and RRC signaling;

[0245] PC5 interface: SCI and PC5RRC signaling.

[0246] In some embodiments, step S4105 is an optional step. For example, the third information may be specified by a communication protocol. In some implementations, when the first receiving device does not receive the third information, the modulation order of the constellation modulation corresponding to the symbol mapped on the resource element set of the second DD domain resource may be determined according to the protocol provisions or default values. For another example, the resource elements around the first DD domain resource are not used (such as not allocated to other receiving devices, or as protection resource elements), and the transmitting device does not send the third information. In some implementations, when the first receiving device does not receive the third information, it receives the symbol sequence sent on the above-mentioned first DD domain resource according to the first information and / or the second information.

[0247] Step S4106: The sending device sends a symbol sequence on the first DD domain resource.

[0248] The symbol sequence includes a first symbol sequence and a second symbol sequence. The sending device sends the first symbol sequence on a first resource element set of the first DD domain resource and sends the second symbol sequence on a second resource element set of the first DD domain resource.

[0249] In some embodiments, the symbol sequence further includes at least one symbol sequence in addition to the first symbol sequence and the second symbol sequence, for example, further including a third symbol sequence, the third symbol sequence including symbols obtained by third constellation modulation, the modulation order of the second constellation modulation, the modulation order of the third constellation modulation, and the modulation order of the first constellation modulation decreasing. In the case where the first DD domain resource includes four or more resource element sets, its optional implementation method can refer to the optional implementation method including two or three resource element sets, and is not repeated here.

[0250] In some embodiments, the first receiving device receives the symbol sequence sent on the first DD domain resource based on at least one of the first information, the second information, and the third information. Optionally, the first receiving device detects the signal on each resource element of the first DD domain resource based on the modulation order of the constellation modulation corresponding to the symbol mapped on each resource element set of the first DD domain resource and the modulation order of the constellation modulation corresponding to the symbol mapped on the resource element sets of other receiving devices adjacent to the DD domain resource, thereby obtaining the data symbol and information.

[0251] In some embodiments, the step of sending the symbol sequence after the sending device maps the symbol sequence to the resource element of the first DD domain resource can be referred to the relevant description of the OTFS system shown in Figure 2, which is not repeated here.

[0252] According to the above embodiment, when performing constellation modulation, the transmitting device can use two or more constellation modulations, and then map the constellation-modulated symbols to resource elements in the DD domain. High-order (or relatively high-order) constellation modulation can provide a faster data rate and a high level of spectrum efficiency for the communication system, while low-order (or relatively low-order) constellation modulation means that the Euclidean distance between constellation points is large, and inter-symbol interference is easy to eliminate. Therefore, the embodiments of the present disclosure can effectively reduce or control inter-symbol interference between resources allocated to different receiving devices, effectively reduce the number of guard REs, and even completely avoid the use of guard REs, thereby improving spectrum efficiency.

[0253] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "chip", and "notification" can be used interchangeably.

[0254] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0255] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0256] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0257] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0258] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0259] The communication method involved in the embodiment of the present disclosure may include at least one of steps S4101 to S4106. For example, step S4102 can be implemented as an independent embodiment, step S4102 + step S4103 can be implemented as an independent embodiment, step S4102 + step S4104 can be implemented as an independent embodiment, step S4102 + step S4105 can be implemented as an independent embodiment, step S4102 + step S4103 + step S4104 can be implemented as an independent embodiment, step S4102 + step S4103 + step S4105 can be implemented as an independent embodiment, step S4102 + step S4104 + step S4105 can be implemented as an independent embodiment, step S4102 + step S4106 can be implemented as an independent embodiment, and step Step S4102+step S4103+step S4106 can be implemented as an independent embodiment, step S4102+step S4104+step S4106 can be implemented as an independent embodiment, step S4102+step S4105+step S4106 can be implemented as an independent embodiment, step S4102+step S4103+step S4104+step S4106 can be implemented as an independent embodiment, step S4102+step S4103+step S4105+step S4106 can be implemented as an independent embodiment, step S4102+step S4104+step S4105+step S4106 can be implemented as an independent embodiment, but is not limited to this.

[0260] In some embodiments, step S4102 and step S4103 can be exchanged in order or executed simultaneously, step S4102 and step S4104 can be exchanged in order or executed simultaneously, step S4102 and step S4105 can be exchanged in order or executed simultaneously, step S4103 and step S4104 can be exchanged in order or executed simultaneously, step S4103 and step S4105 can be exchanged in order or executed simultaneously, step S4103 and step S4106 can be exchanged in order or executed simultaneously, step S4104 and step S4105 can be exchanged in order or executed simultaneously, step S4104 and step S4106 can be exchanged in order or executed simultaneously, step S4105 and step S4106 can be exchanged in order or executed simultaneously.

[0261] In some embodiments, step S4103, step S4104, and step S4105 are optional steps, and one or more of these steps may be omitted or replaced in different embodiments.

[0262] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 .

[0263] FIG6A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6A , the embodiment of the present disclosure relates to a communication method that can be applied to a sending device, such as a network device. The method includes:

[0264] Step S6101: Determine a first DD domain resource.

[0265] In some embodiments, the transmitting device determines a first DD domain resource to be allocated to the first receiving device.

[0266] The optional implementation of step S6101 can refer to the optional implementation of step S4101 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0267] Step S6102: Map the first symbol sequence to a first resource element set of the first DD domain resource, and map the second symbol sequence to a second resource element set of the first DD domain resource.

[0268] The optional implementation of step S6102 can refer to the optional implementation of step S4102 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0269] Step S6103: Send the first information.

[0270] The optional implementation of step S6103 can refer to the optional implementation of step S4103 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0271] Step S6104: Send the second information.

[0272] The optional implementation of step S6104 can refer to the optional implementation of step S4104 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0273] Step S6105: Send the third information.

[0274] The optional implementation of step S6105 can refer to the optional implementation of step S4105 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0275] Step S6106: Send a symbol sequence on the first DD domain resource.

[0276] The optional implementation of step S6106 can refer to the optional implementation of step S4106 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0277] The symbol sequence includes a first symbol sequence and a second symbol sequence. In this step, the first symbol sequence is sent on a first resource element set of the first DD domain resource, and the second symbol sequence is sent on a second resource element set of the first DD domain resource.

[0278] In some embodiments, step S6102 and step S6103 can be exchanged in order or executed simultaneously, step S6102 and step S6104 can be exchanged in order or executed simultaneously, step S6102 and step S6105 can be exchanged in order or executed simultaneously, step S6103 and step S6104 can be exchanged in order or executed simultaneously, step S6103 and step S6105 can be exchanged in order or executed simultaneously, step S6103 and step S6106 can be exchanged in order or executed simultaneously, step S6104 and step S6105 can be exchanged in order or executed simultaneously, step S6104 and step S6106 can be exchanged in order or executed simultaneously, step S6105 and step S6106 can be exchanged in order or executed simultaneously.

[0279] In some embodiments, step S6103, step S6104, and step S6105 are optional steps, and one or more of these steps may be omitted or replaced in different embodiments.

[0280] FIG6B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6B , the embodiment of the present disclosure relates to a communication method that can be applied to a sending device, such as a network device. The method includes:

[0281] Step S6201: Determine a first DD domain resource.

[0282] In some embodiments, the transmitting device determines a first DD domain resource to be allocated to the first receiving device.

[0283] The optional implementation of step S6201 can refer to the optional implementation of step S4101 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0284] Step S6202: Map the first symbol sequence to a first resource element set of the first DD domain resource, and map the second symbol sequence to a second resource element set of the first DD domain resource.

[0285] The optional implementation of step S6202 can refer to the optional implementation of step S4102 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0286] FIG6C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6C , the embodiment of the present disclosure relates to a communication method that can be applied to a sending device, such as a network device. The method includes:

[0287] Step S6301: Send the first information.

[0288] The optional implementation of step S6301 can refer to the optional implementation of step S4103 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0289] In some embodiments, the above steps are optional steps.

[0290] FIG6D is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6D , the embodiment of the present disclosure relates to a communication method that can be applied to a sending device, such as a network device. The method includes:

[0291] Step S6401: Send the second information.

[0292] The optional implementation of step S6401 can refer to the optional implementation of step S4104 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0293] In some embodiments, the above steps are optional steps.

[0294] FIG6E is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6E , the embodiment of the present disclosure relates to a communication method that can be applied to a sending device, such as a network device. The method includes:

[0295] Step S6501: Send the third information.

[0296] The optional implementation of step S6501 can refer to the optional implementation of step S4105 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0297] In some embodiments, the above steps are optional steps.

[0298] FIG7A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG7A , the embodiment of the present disclosure relates to a communication method that can be applied to a first receiving device, which can be a terminal. The method includes:

[0299] Step S7101: Determine a first DD domain resource.

[0300] In some embodiments, the first receiving device determines a first DD domain resource allocated to the first receiving device by the transmitting device.

[0301] Step S7102: Obtain first information.

[0302] In some embodiments, the first receiving device receives the first information sent by the sending device, but is not limited thereto and may also receive the first information sent by other entities.

[0303] In some embodiments, the first receiving device obtains first information specified by a protocol.

[0304] In some embodiments, the first receiving device obtains the first information from an upper layer(s).

[0305] In some embodiments, the first information is used to indicate resource particle set information of the first DD domain resource.

[0306] In some embodiments, the name of the first information is not limited, and it can be, for example, "resource information", "resource particle set information", "resource layer information", etc.

[0307] In some embodiments, the first information may include at least one of the following:

[0308] The number of resource element sets of the first DD domain resources;

[0309] a consecutive number of resource elements included in the delay domain by at least one resource element set of the first DD domain resources;

[0310] The continuous number of resource elements included in the Doppler domain by at least one resource element set of the first DD domain resource.

[0311] In some embodiments, the first information is carried in at least one of the following: DCI; MAC CE; RRC; SCI.

[0312] In some embodiments, the first receiving device receives the first information via signaling. Optionally, the signaling may include at least one of the following signaling:

[0313] Uu interface: DCI, MAC CE and RRC signaling;

[0314] PC5 interface: SCI and PC5RRC signaling.

[0315] In some embodiments, step S7102 is an optional step.

[0316] The optional implementation of step S7102 can refer to the optional implementation of step S4103 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0317] Step S7103: Obtain second information.

[0318] In some embodiments, the first receiving device receives the second information sent by the sending device, but is not limited thereto and may also receive the second information sent by other entities.

[0319] In some embodiments, the first receiving device obtains second information specified by the protocol.

[0320] In some embodiments, the first receiving device obtains the second information from an upper layer(s).

[0321] In some embodiments, the second information is used to indicate a modulation order of constellation modulation corresponding to symbols mapped on at least one set of resource elements of the first DD domain resource. It should be noted that the second information indicating the modulation order of constellation modulation corresponding to symbols mapped on at least one set of resource elements of the first DD domain resource may be an explicit and / or implicit indication.

[0322] In some embodiments, the name of the second information is not limited, and it can be, for example, "modulation information", "modulation order information", "modulation mode information", "modulation coding information", etc.

[0323] In some embodiments, the second information may include at least one of the following:

[0324] a modulation order of constellation modulation corresponding to symbols mapped to at least one resource element set of the first DD domain resources;

[0325] An index of an MCS corresponding to a symbol mapped to at least one resource element set of the first DD domain resource;

[0326] The difference in modulation orders of constellation modulation corresponding to the symbols mapped on the two resource element sets of the first DD domain resource;

[0327] The difference between the MCS indexes corresponding to the symbols mapped on the two resource element sets of the first DD domain resource.

[0328] In some embodiments, the second information is carried in at least one of the following: DCI; MAC CE; RRC; SCI.

[0329] In some embodiments, the first receiving device receives the second information via signaling. Optionally, the signaling may include at least one of the following signaling:

[0330] Uu interface: DCI, MAC CE and RRC signaling;

[0331] PC5 interface: SCI and PC5RRC signaling.

[0332] In some embodiments, step S7103 is an optional step.

[0333] The optional implementation of step S7103 can refer to the optional implementation of step S4104 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0334] Step S7104: Obtain third information.

[0335] In some embodiments, the first receiving device receives the third information sent by the sending device, but is not limited thereto and may also receive the third information sent by other entities.

[0336] In some embodiments, the first receiving device obtains third information specified by the protocol.

[0337] In some embodiments, the first receiving device obtains the third information from an upper layer(s).

[0338] In some embodiments, the third information is used to indicate a modulation order of constellation modulation corresponding to symbols mapped to at least one set of resource elements of the second DD domain resource. The second DD domain resource is a DD domain resource allocated to the second receiving device. Optionally, the second DD domain resource is adjacent to the first DD domain resource. It should be noted that the third information indicating the modulation order of constellation modulation corresponding to symbols mapped to at least one set of resource elements of the second DD domain resource may be an explicit and / or implicit indication.

[0339] In some embodiments, the name of the third information is not limited, and it can be, for example, "modulation information", "modulation order information", "modulation mode information", "modulation coding information", etc.

[0340] In some embodiments, the third information includes at least one of the following:

[0341] a modulation order of constellation modulation corresponding to symbols mapped to at least one resource element set of the second DD domain resources;

[0342] an index of an MCS corresponding to a symbol mapped to at least one resource element set of the second DD domain resource;

[0343] a difference in modulation order between constellation modulation corresponding to a symbol mapped on a set of resource elements of the second DD domain resource and constellation modulation corresponding to a symbol mapped on a set of resource elements of the first DD domain resource;

[0344] The difference between the indexes of the MCS corresponding to the symbols mapped on a set of resource elements of the second DD domain resources and the MCS corresponding to the symbols mapped on a set of resource elements of the first DD domain resources.

[0345] In some embodiments, the third information may be carried in at least one of the following: DCI; MAC CE; RRC; SCI.

[0346] In some embodiments, the first receiving device receives the third information via signaling. Optionally, the signaling may include at least one of the following:

[0347] Uu interface: DCI, MAC CE and RRC signaling;

[0348] PC5 interface: SCI and PC5RRC signaling.

[0349] In some embodiments, step S7104 is an optional step.

[0350] The optional implementation of step S7104 can refer to the optional implementation of step S4105 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0351] Step S7105: Receive a symbol sequence sent on a first DD domain resource.

[0352] In some embodiments, a symbol sequence sent on a first DD domain resource is received according to the first information.

[0353] In some embodiments, a symbol sequence sent on the first DD domain resource is received according to the second information.

[0354] In some embodiments, a symbol sequence sent on the first DD domain resource is received according to the third information.

[0355] In some embodiments, a symbol sequence sent on the first DD domain resource is received according to at least one of the first information, the second information, and the third information.

[0356] The symbol sequence includes a first symbol sequence and a second symbol sequence, the first symbol sequence includes symbols obtained by first constellation modulation, and the second symbol sequence includes symbols obtained by second constellation modulation. The modulation order of the first constellation modulation is smaller than the modulation order of the second constellation modulation, that is, the number of constellation points of the first constellation modulation is smaller than the number of constellation points of the second constellation modulation.

[0357] In some embodiments, the first receiving device receives a first symbol sequence sent on a first resource element set of a first DD domain resource and a second symbol sequence sent on a second resource element set of the first DD domain resource.

[0358] The optional implementation of step S7105 can refer to the optional implementation of step S4106 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0359] The communication method involved in the embodiment of the present disclosure may include at least one of steps S7101 to S7105. For example, step S7105 can be implemented as an independent embodiment, step S7101+step S7105 can be implemented as an independent embodiment, step S7101+step S7102+step S7105 can be implemented as an independent embodiment, step S7101+step S7103+step S7105 can be implemented as an independent embodiment, step S7101+step S7104+step S7105 can be implemented as an independent embodiment, step S7101+step S7102+step S7103+step S7105 can be implemented as an independent embodiment, step S7101+step S7102+step S7104+step S7105 can be implemented as an independent embodiment, step S7101+step S7102+step S7104+step S7105 can be implemented as an independent embodiment, step S7101+step S7103+step S7104+step S7105 can be implemented as an independent embodiment, but is not limited to this.

[0360] In some embodiments, step S7101 and step S7102 can be exchanged in order or executed simultaneously, step S7101 and step S7103 can be exchanged in order or executed simultaneously, step S7101 and step S7104 can be exchanged in order or executed simultaneously, step S7102 and step S7103 can be exchanged in order or executed simultaneously, step S7102 and step S7104 can be exchanged in order or executed simultaneously, step S7103 and step S7104 can be exchanged in order or executed simultaneously.

[0361] In some embodiments, step S7102, step S7103, and step S7104 are optional steps, and one or more of these steps may be omitted or replaced in different embodiments.

[0362] FIG7B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG7B , the embodiment of the present disclosure relates to a communication method that can be applied to a first receiving device, which can be a terminal. The method includes:

[0363] Step S7201: Determine a first DD domain resource.

[0364] In some embodiments, the first receiving device determines a first DD domain resource allocated to the first receiving device by the transmitting device.

[0365] Step S7202: Obtain first information.

[0366] The optional implementation of step S7202 can be found in step S4103 of FIG. 4 , the optional implementation of step S7102 of FIG. 7A , and other related parts in the embodiments involved in FIG. 4 and FIG. 7A , which will not be described in detail here.

[0367] Step S7203: Receive a symbol sequence sent on a first DD domain resource according to the first information.

[0368] In some embodiments, the first information is used to indicate resource particle set information of the first DD domain resource, and the first receiving device receives the symbol sequence sent on the first DD domain resource according to the first information.

[0369] The optional implementation of step S7203 can be found in step S4106 of FIG. 4 , the optional implementation of step S7105 of FIG. 7A , and other related parts in the embodiments involved in FIG. 4 and FIG. 7A , which will not be described in detail here.

[0370] FIG7C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG7C , the embodiment of the present disclosure relates to a communication method, which can be applied to a first receiving device, which can be a terminal. The method includes:

[0371] Step S7301: Determine a first DD domain resource.

[0372] In some embodiments, the first receiving device determines a first DD domain resource allocated to the first receiving device by the transmitting device.

[0373] Step S7302: Obtain second information.

[0374] The optional implementation of step S7302 can be found in step S4104 of FIG. 4 , the optional implementation of step S7103 of FIG. 7A , and other related parts in the embodiments involved in FIG. 4 and FIG. 7A , which will not be described in detail here.

[0375] Step S7303: Receive a symbol sequence sent on the first DD domain resource according to the second information.

[0376] The optional implementation of step S7303 can refer to the optional implementation of step S4106 in Figure 4, step S7105 in Figure 7A, and other related parts in the embodiments involved in Figures 4 and 7A, which will not be repeated here.

[0377] FIG7D is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG7C , the embodiment of the present disclosure relates to a communication method, which can be applied to the first receiving device mentioned above, which can be a terminal. The method includes:

[0378] Step S7401: Determine a first DD domain resource.

[0379] In some embodiments, the first receiving device determines a first DD domain resource allocated to the first receiving device by the transmitting device.

[0380] Step S7402: Obtain third information.

[0381] The optional implementation of step S7402 can be found in step S4105 of FIG. 4 , the optional implementation of step S7104 of FIG. 7A , and other related parts in the embodiments involved in FIG. 4 and FIG. 7A , which will not be described in detail here.

[0382] Step S7403: Receive a symbol sequence sent on the first DD domain resource according to the third information.

[0383] The optional implementation of step S7403 can refer to the optional implementation of step S4106 in Figure 4, step S7105 in Figure 7A, and other related parts in the embodiments involved in Figures 4 and 7A, which will not be repeated here.

[0384] The communication method of the embodiment of the present disclosure is described below by taking the sending device as a base station and the receiving device as a terminal as an example.

[0385] For a given terminal, within the DD domain resources (a set of resource elements) allocated to it, the base station maps symbols using the first constellation modulation to resource elements at, near, or on the edge, and peripherally, and maps symbols using the second constellation modulation to resource elements at, near, or in the center. The modulation order of the first constellation modulation is lower than that of the second constellation modulation, that is, the number of constellation points of the first constellation modulation is less than the number of constellation points of the second constellation modulation.

[0386] Optionally, symbols modulated using the first constellation correspond to codeword one, denoted as CW1, and their corresponding modulation and coding scheme (MCS) is MCS1; symbols modulated using the second constellation correspond to codeword two, denoted as CW2, and their corresponding modulation and coding scheme is MCS2. The base station notifies the terminal of MCS1 and MCS2 via signaling. The signaling may be at least one of RRC, MAC CE, and DCI.

[0387] Optionally, the first constellation modulation order or MCS1 may be predetermined by a protocol, or configured by the base station through signaling, which may be at least one of RRC, MAC CE, and DCI.

[0388] Optionally, the code rates of MCS1 and MCS2 may be the same or different.

[0389] Optionally, when the coding rates corresponding to MCS1 and MCS2 are the same (denoted as r), and the corresponding modulation orders are Q1 and Q2 respectively, then the triplet (Q1, Q2, r) can be jointly coded to indicate.

[0390] Optionally, the difference between the order of the first constellation modulation and the order of the second constellation modulation may be predetermined by a protocol, or may be notified to the terminal by the base station through signaling, which may be at least one of RRC, MAC CE, and DCI.

[0391] Optionally, the difference between the number / index corresponding to MCS1 and the number / index corresponding to MCS2 may be predetermined by a protocol, or notified by the base station to the terminal via signaling, which may be at least one of RRC, MAC CE, and DCI.

[0392] Taking implementation 6 in FIG5A as an example, the resources allocated by the base station to terminal 1 include 6 x 8 = 48 DD domain resource elements. The base station maps 24 QPSK modulation symbols to the 24 DD domain resource elements in the outermost tier, and maps 24 64QAM modulation symbols to the inner 4 x 6 = 24 DD domain resource elements. The first constellation modulation (QPSK) is preset by the protocol, and the second constellation modulation (64QAM) is notified to terminal 1 by the base station via DCI signaling. Terminal 1 determines, according to the protocol, that the symbols mapped to the outermost 24 DD domain resource elements are modulated using QPSK, and determines, by receiving the indication field in the DCI, that the symbols mapped to the inner 24 DD domain resource elements are modulated using 64QAM. Terminal 1 then detects the signals on the 48 DD domain resource elements and obtains data symbols and information.

[0393] Taking implementation 7 in Figure 5C as an example, the resources allocated by the base station to terminal 2 include 6 x 8 = 48 DD domain resource elements. The base station maps 24 QPSK modulation symbols to the 24 DD domain resource elements in the outermost tier, maps 16 16QAM modulation symbols to the 16 DD domain resource elements in the next outermost tier, and maps 8 64QAM modulation symbols to the innermost 2 x 4 = 8 DD domain resource elements. The base station notifies terminal 2 of the modulation and coding schemes MCS1, MCS2, and MCS3 corresponding to QPSK, 16QAM, and 64QAM, respectively, through DCI signaling. Terminal 2 determines the modulation and coding scheme used by the 48 DD domain resource elements by receiving the indication field in the DCI, thereby detecting the signals on the 48 DD domain resource elements and obtaining data symbols and information.

[0394] 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 sending device (e.g., a network device) in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a receiving device (e.g., a terminal) in any of the above methods.

[0395] 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.

[0396] 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.

[0397] Figure 8A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure. As shown in Figure 8A, the communication device 8100 may include: at least one of a transceiver module 8101 and a processing module 8102. In some embodiments, the processing module is used to determine a first DD domain resource allocated to a first receiving device. In some embodiments, the processing module is used to map a first symbol sequence to a first set of resource particles of the first DD domain resource, and to map a second symbol sequence to a second set of resource particles of the first DD domain resource. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the sending device in any of the above methods (for example, step S4103, step S4104, step S4105, step S4106, but not limited thereto), which are not further described here. Optionally, the processing module is used to perform at least one of the other steps (for example, step S4101, step S4102, but not limited thereto) performed by the sending device in any of the above methods, which are not further described here.

[0398] Figure 8B is a schematic diagram of the structure of the communication device proposed in an embodiment of the present disclosure. As shown in Figure 8B, the communication device 8200 may include: at least one of a transceiver module 8201, a processing module 8202, etc. In some embodiments, the processing module is used to determine the allocated first DD domain resources. In some embodiments, the transceiver module is used to receive a symbol sequence sent on the first DD domain resources. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the receiving device in any of the above methods, which will not be repeated here. Optionally, the processing module is used to perform at least one of the other steps performed by the receiving device in any of the above methods, which will not be repeated here.

[0399] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0400] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0401] Figure 9A is a schematic diagram of the structure of a communication device 9100 proposed in an embodiment of the present disclosure. Communication device 9100 can be a network device (e.g., an access network device), a terminal (e.g., a user equipment), 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 9100 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.

[0402] As shown in Figure 9A, the communication device 9100 includes one or more processors 9101. The processor 9101 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 communication protocols and communication data, and the central processing unit can be used to control the communication 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 communication device 9100 is used to perform any of the above methods.

[0403] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 may be located outside the communication device 9100.

[0404] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the transceiver 9103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S4103, step S4104, step S4105, step S4106, but not limited thereto), and the processor 9101 performs at least one of the other steps (for example, step S4101, step S4102, but not limited thereto).

[0405] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter 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.

[0406] In some embodiments, the communication device 9100 may include one or more interface circuits 9104. Optionally, the interface circuit 9104 is connected to the memory 9102. The interface circuit 9104 may be configured to receive signals from the memory 9102 or other devices, and may be configured to send signals to the memory 9102 or other devices. For example, the interface circuit 9104 may read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0407] The communication device 9100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 9A. The communication device may be an independent device or may be part of a larger device. For example, the above 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.

[0408] 9B is a schematic diagram of the structure of a chip 9200 according to an embodiment of the present disclosure. If the communication device 9100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 9200 shown in FIG9B , but the present disclosure is not limited thereto.

[0409] The chip 9200 includes one or more processors 9201 , and the chip 9200 is configured to execute any of the above methods.

[0410] In some embodiments, the chip 9200 further includes one or more interface circuits 9202. Optionally, the interface circuit 9202 is connected to the memory 9203. The interface circuit 9202 can be used to receive signals from the memory 9203 or other devices, and can be used to send signals to the memory 9203 or other devices. For example, the interface circuit 9202 can read instructions stored in the memory 9203 and send the instructions to the processor 9201.

[0411] In some embodiments, the interface circuit 9202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S4103, step S4104, step S4105, step S4106, but not limited to these), and the processor 9201 executes at least one of the other steps (for example, step S4101, step S4102, but not limited to these).

[0412] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0413] In some embodiments, the chip 9200 further includes one or more memories 9203 for storing instructions. Alternatively, all or part of the memories 9203 may be located outside the chip 9200.

[0414] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 9100, causes the communication device 9100 to execute 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.

[0415] The present disclosure also provides a program product, which, when executed by the communication device 9100, enables the communication device 9100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0416] 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.

Claims

1. A communication method, characterized in that, performed by a transmitting device, the method comprising: determining a first delay-Doppler (DD) domain resource allocated to a first receiving device; mapping a first symbol sequence to a first resource particle set of the first DD domain resource and mapping a second symbol sequence to a second resource particle set of the first DD domain resource; wherein, the first symbol sequence comprises symbols obtained through a first constellation modulation, the second symbol sequence comprises symbols obtained through a second constellation modulation, and the modulation order of the first constellation modulation is less than the modulation order of the second constellation modulation.

2. The method according to claim 1, characterized in that, the first resource particle set comprises all or part of the peripheral resource particles of the first DD domain resource.

3. The method according to claim 1 or 2, characterized in that, the first DD domain resource further comprises at least one resource particle set located between the position where the first resource particle set is located and the position where the second resource particle set is located, and according to the position of each resource particle set on the first DD domain resource, from the position where the second resource particle set is located to the position where the first resource particle set is located, the modulation order of the constellation modulation corresponding to the symbols mapped on each resource particle set decreases.

4. The method according to any one of claims 1-3, characterized in that, the method further comprises: sending first information to the first receiving device, the first information being used to indicate resource particle set information of the first DD domain resource.

5. The method according to claim 4, characterized in that, the first information comprises at least one of the following: the number of resource particle sets of the first DD domain resource; the continuous number of resource particles comprised in at least one resource particle set of the first DD domain resource in the delay domain; the continuous number of resource particles comprised in at least one resource particle set of the first DD domain resource in the Doppler domain.

6. The method according to any one of claims 1-5, characterized in that, the method further comprises: sending second information to the first receiving device, the second information being used to indicate the modulation order of the constellation modulation corresponding to the symbols mapped on at least one resource particle set of the first DD domain resource.

7. The method according to claim 6, characterized in that, the second information comprises at least one of the following: the modulation order of the constellation modulation corresponding to the symbols mapped on at least one resource particle set of the first DD domain resource; the index of the modulation and coding scheme (MCS) corresponding to the symbols mapped on at least one resource particle set of the first DD domain resource; the difference between the modulation orders of the constellation modulations corresponding to the symbols respectively mapped on two resource particle sets of the first DD domain resource; the difference between the indices of the MCSs corresponding to the symbols respectively mapped on two resource particle sets of the first DD domain resource.

8. The method according to any one of claims 1-7, characterized in that, the method further comprises: Send third information to the first receiving device, where the third information is used to indicate the modulation order of the constellation modulation corresponding to the symbols mapped on at least one resource particle set of the second DD domain resource, and the second DD domain resource is the DD domain resource allocated to the second receiving device.

9. The method according to claim 8, wherein, the third information includes at least one of the following: the modulation order of the constellation modulation corresponding to the symbols mapped on at least one resource particle set of the second DD domain resource; the index of the MCS corresponding to the symbols mapped on at least one resource particle set of the second DD domain resource; the difference between the modulation orders of the constellation modulations corresponding to the symbols mapped on one resource particle set of the second DD domain resource and the constellation modulation corresponding to the symbols mapped on one resource particle set of the first DD domain resource; the difference between the indexes of the MCSs corresponding to the symbols mapped on one resource particle set of the second DD domain resource and the MCS corresponding to the symbols mapped on one resource particle set of the first DD domain resource.

10. The method according to any one of claims 1-9, wherein, at least one of the following is agreed in the communication protocol: the modulation order of the constellation modulation corresponding to the symbols mapped on at least one resource particle set of the first DD domain resource; the index of the MCS corresponding to the symbols mapped on at least one resource particle set of the first DD domain resource; the difference between the modulation orders of the constellation modulations corresponding to the symbols respectively mapped on two resource particle sets of the first DD domain resource; the difference between the indexes of the MCSs corresponding to the symbols respectively mapped on two resource particle sets of the first DD domain resource; the modulation order of the constellation modulation corresponding to the symbols mapped on at least one resource particle set of the second DD domain resource, where the second DD domain resource is the DD domain resource allocated to the second receiving device; the index of the MCS corresponding to the symbols mapped on at least one resource particle set of the second DD domain resource; the difference between the modulation orders of the constellation modulations corresponding to the symbols mapped on one resource particle set of the second DD domain resource and the constellation modulation corresponding to the symbols mapped on one resource particle set of the first DD domain resource; the difference between the indexes of the MCSs corresponding to the symbols mapped on one resource particle set of the second DD domain resource and the MCS corresponding to the symbols mapped on one resource particle set of the first DD domain resource.

11. The method according to any one of claims 1-10, wherein, the coding rates of the MCSs corresponding to the symbols respectively mapped on two resource particle sets of the first DD domain resource are the same.

12. A communication method, wherein, executed by a first receiving device, the method includes: determine the allocated first DD domain resource; receive a symbol sequence sent on the first DD domain resource, where the symbol sequence includes a first symbol sequence mapped to a first resource particle set of the first DD domain resource and a second symbol sequence mapped to a second resource particle set of the first DD domain resource; Among them, the first symbol sequence includes symbols obtained through first constellation modulation, the second symbol sequence includes symbols obtained through second constellation modulation, and the modulation order of the first constellation modulation is less than that of the second constellation modulation.

13. The method according to claim 12, wherein, the first set of resource particles includes all or part of the peripheral resource particles of the first DD-domain resource.

14. The method according to claim 12 or 13, wherein, the first DD-domain resource further includes at least one set of resource particles located between the position of the first set of resource particles and the position of the second set of resource particles. According to the position of each set of resource particles on the first DD-domain resource, starting from the position of the second set of resource particles to the position of the first set of resource particles, the modulation order of the constellation modulation corresponding to the symbols mapped on each set of resource particles decreases.

15. The method according to any one of claims 12-14, wherein, the method further includes: receiving first information, where the first information is used to indicate the information of the set of resource particles of the first DD-domain resource.

16. The method according to claim 15, wherein, the first information includes at least one of the following: the number of sets of resource particles of the first DD-domain resource; the continuous number of resource particles included in at least one set of resource particles of the first DD-domain resource in the time delay domain; the continuous number of resource particles included in at least one set of resource particles of the first DD-domain resource in the Doppler domain.

17. The method according to any one of claims 12-16, wherein, the method further includes: receiving second information, where the second information is used to indicate the modulation order of the constellation modulation corresponding to the symbols mapped on at least one set of resource particles of the first DD-domain resource.

18. The method according to claim 17, wherein, the second information includes at least one of the following: the modulation order of the constellation modulation corresponding to the symbols mapped on at least one set of resource particles of the first DD-domain resource; the index of the MCS corresponding to the symbols mapped on at least one set of resource particles of the first DD-domain resource; the difference in the modulation order of the constellation modulation corresponding to the symbols respectively mapped on two sets of resource particles of the first DD-domain resource; the difference in the index of the MCS corresponding to the symbols respectively mapped on two sets of resource particles of the first DD-domain resource.

19. The method according to any one of claims 12-18, wherein, the method further includes: receiving third information, where the third information is used to indicate the modulation order of the constellation modulation corresponding to the symbols mapped on at least one set of resource particles of a second DD-domain resource, and the second DD-domain resource is the DD-domain resource allocated to a second receiving device.

20. The method according to claim 19, wherein, the third information includes at least one of the following: the modulation order of the constellation modulation corresponding to the symbols mapped on at least one set of resource particles of the second DD-domain resource; The index of the MCS corresponding to the symbol mapped on at least one set of resource particles of the second DD domain resource; The difference in the modulation order of the constellation modulation corresponding to the symbol mapped on one set of resource particles of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on one set of resource particles of the first DD domain resource; The difference in the index of the MCS corresponding to the symbol mapped on one set of resource particles of the second DD domain resource and the index of the MCS corresponding to the symbol mapped on one set of resource particles of the first DD domain resource.

21. The method according to any one of claims 12 - 20, characterized in that, at least one of the following is agreed in the communication protocol: The modulation order of the constellation modulation corresponding to the symbol mapped on at least one set of resource particles of the first DD domain resource; The index of the MCS corresponding to the symbol mapped on at least one set of resource particles of the first DD domain resource; The difference in the modulation order of the constellation modulation corresponding to each of the symbols mapped on two sets of resource particles of the first DD domain resource; The difference in the index of the MCS corresponding to each of the symbols mapped on two sets of resource particles of the first DD domain resource; The modulation order of the constellation modulation corresponding to the symbol mapped on at least one set of resource particles of the second DD domain resource, where the second DD domain resource is the DD domain resource allocated to the second receiving device; The index of the MCS corresponding to the symbol mapped on at least one set of resource particles of the second DD domain resource; The difference in the modulation order of the constellation modulation corresponding to the symbol mapped on one set of resource particles of the second DD domain resource and the constellation modulation corresponding to the symbol mapped on one set of resource particles of the first DD domain resource; The difference in the index of the MCS corresponding to the symbol mapped on one set of resource particles of the second DD domain resource and the index of the MCS corresponding to the symbol mapped on one set of resource particles of the first DD domain resource.

22. The method according to any one of claims 12 - 21, characterized in that, The coding rates of the MCSs corresponding to the symbols respectively mapped on two sets of resource particles of the first DD domain resource are the same.

23. A communication device, characterized in that, comprises: A processing module, configured to determine the first DD domain resource allocated to the first receiving device; and is further configured to map a first symbol sequence to the first set of resource particles of the first DD domain resource and map a second symbol sequence to the second set of resource particles of the first DD domain resource; wherein, the first symbol sequence includes symbols obtained through a first constellation modulation, the second symbol sequence includes symbols obtained through a second constellation modulation, and the modulation order of the first constellation modulation is less than the modulation order of the second constellation modulation.

24. A communication device, characterized in that, comprises: A processing module, configured to determine the allocated first DD domain resource; A transceiver module, configured to receive a symbol sequence transmitted on the first DD domain resource, where the symbol sequence includes a first symbol sequence mapped to a first resource particle set of the first DD domain resource and a second symbol sequence mapped to a second resource particle set of the first DD domain resource; wherein, the first symbol sequence includes symbols obtained through a first constellation modulation, the second symbol sequence includes symbols obtained through a second constellation modulation, and the modulation order of the first constellation modulation is less than that of the second constellation modulation.

25. A communication device, characterized in that, it includes: one or more processors; wherein, the communication device is configured to execute the communication method according to any one of claims 1-11.

26. A communication device, characterized in that, it includes: one or more processors; wherein, the communication device is configured to execute the communication method according to any one of claims 12-22.

27. A communication system, characterized in that, it includes a transmitting device and a receiving device, wherein the transmitting device is configured to implement the communication method according to any one of claims 1-11, and the receiving device is configured to implement the communication method according to any one of claims 12-22.

28. A storage medium storing instructions, characterized in that, when the instructions run on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-11 or 12-22.

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