Communication method, terminal, network device, communication system, and storage medium

Abstract

Embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium. The communication method comprises: sending first information, wherein the first information is used for indicating at least one of the following: the delay between a downlink OTFS frame and an uplink OTFS frame, and an index of the uplink OTFS frame. The embodiments of the present disclosure can ensure a sufficient delay between a downlink channel and an uplink channel in an OTFS system.

Description

Communication method, terminal, network device, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of wireless communications, and in particular to a communication method, a terminal, a network device, a communication system, and a storage medium. Background Art

[0002] In communication systems, data can be converted to the delay-Doppler (DD) domain using orthogonal time-frequency-space (OTFS) modulation. Within the DD domain, a delay can exist between the downlink and uplink channels. This delay enables the terminal to detect and demodulate the downlink channel.

[0003] Summary of the Invention

[0004] In an OTFS modulation communication system, the time delay between the downlink channel and the uplink channel can be determined.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, comprising: sending first information, wherein the first information is used to indicate at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, and an index of the uplink OTFS frame.

[0006] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, comprising: receiving first information, wherein the first information is used to indicate at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, and an index of the uplink OTFS frame.

[0007] According to a third aspect of an embodiment of the present disclosure, a network device is provided. The network device includes a transceiver module. The transceiver module is configured to send first information, where the first information is used to indicate at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, and an index of the uplink OTFS frame.

[0008] According to a fourth aspect of the embodiments of the present disclosure, a terminal is provided, comprising: receiving first information, wherein the first information is used to indicate at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, and an index of the uplink OTFS frame.

[0009] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided. The network device includes one or more processors and a memory storing instructions. When the instructions are executed by the network device, the network device implements the communication method described in the first aspect.

[0010] According to a sixth aspect of an embodiment of the present disclosure, a terminal is provided. The terminal includes one or more processors and a memory storing instructions. When the instructions are executed by the terminal, the terminal implements the communication method described in the second aspect.

[0011] According to a seventh aspect of an embodiment of the present disclosure, a communication system is provided. The communication system includes a network device and a terminal. The network device is configured to execute the communication method described in the first aspect. The terminal is configured to execute the communication method described in the second aspect.

[0012] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided. The storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method described in any one of the first and second aspects.

[0013] According to a ninth aspect of the embodiments of the present disclosure, a program product is provided, which, when executed by a communication device, causes the communication device to execute the communication method as described in any one of the first and second aspects.

[0014] According to a tenth aspect of the embodiments of the present disclosure, a computer program is provided, which, when executed on a computer, causes the computer to execute the communication method as described in any one of the first and second aspects.

[0015] According to an eleventh aspect of the present disclosure, a chip or chip system is provided. The chip or chip system includes a processing circuit. The processing circuit is configured to execute the communication method described in any one of the first and second aspects.

[0016] According to an embodiment of the present disclosure, a network device can send first information to a terminal. The terminal can determine the location of the uplink OTFS frame based on the delay between the downlink OTFS frame and the uplink OTFS frame and / or the index of the uplink OTFS frame indicated by the first information. In this way, sufficient delay can be ensured between the downlink channel and the uplink channel for the terminal to complete detection and demodulation of the downlink channel.

[0017] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory and do not constitute limitations on the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0019] FIG1 is a schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0020] FIG2 is a schematic diagram of the system architecture of OTFS modulation.

[0021] FIG3 is a schematic diagram of data mapping of OTFS modulation.

[0022] FIG4 is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.

[0023] FIG5A is a schematic diagram of a first implementation of a time delay between a downlink channel and an uplink channel provided according to an embodiment of the present disclosure.

[0024] FIG5B is a schematic diagram of a second implementation of the time delay between a downlink channel and an uplink channel provided according to an embodiment of the present disclosure.

[0025] FIG5C is a schematic diagram of a third implementation of the time delay between a downlink channel and an uplink channel provided according to an embodiment of the present disclosure.

[0026] FIG5D is a schematic diagram of a fourth implementation of the time delay between a downlink channel and an uplink channel provided according to an embodiment of the present disclosure.

[0027] FIG6 is an exemplary flowchart of a communication method provided according to an embodiment of the present disclosure.

[0028] FIG7 is an exemplary flowchart of a communication method provided according to an embodiment of the present disclosure.

[0029] FIG8 is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.

[0030] FIG9A is an exemplary structural diagram of a network device provided according to an embodiment of the present disclosure.

[0031] FIG9B is an exemplary structural diagram of a terminal provided according to an embodiment of the present disclosure.

[0032] FIG10A is a schematic structural diagram of a communication device provided according to an embodiment of the present disclosure.

[0033] FIG10B is a schematic structural diagram of a chip provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium to determine the time delay between a downlink channel and an uplink channel in an OTFS system.

[0035] In a first aspect, embodiments of the present disclosure provide a communication method, including: sending first information, wherein the first information is used to indicate at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, and an index of the uplink OTFS frame.

[0036] In the above embodiment, the network device can send the first information to the terminal. The terminal can determine the position of the uplink OTFS frame based on the delay between the downlink OTFS frame and the uplink OTFS frame indicated by the first information and / or the index of the uplink OTFS frame. In this way, sufficient delay can be ensured between the downlink channel and the uplink channel for the terminal to complete detection and demodulation of the downlink channel.

[0037] In combination with some embodiments of the first aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a first number, wherein the first number is the number of downlink OTFS frames carrying PDCCH; a second number, wherein the second number is the number of downlink OTFS frames carrying PDSCH.

[0038] In the above embodiment, the first information may include at least one of a first quantity and a second quantity. The first quantity is the number of downlink OTFS frames carrying the PDCCH. The second quantity is the number of downlink OTFS frames carrying the PDSCH. In this way, the delay indicated by the first information can be correlated with the number of downlink OTFS frames. The larger the first and second quantities, the greater the delay indicated by the first information; the smaller the first and second quantities, the smaller the delay indicated by the first information. This ensures a sufficiently large delay between downlink OTFS frames and uplink OTFS frames.

[0039] In combination with some embodiments of the first aspect, in some embodiments, the first information may include one of the following: a first quantity and a second quantity; the larger of the first quantity and the second quantity; the smaller of the first quantity and the second quantity; or either of the first quantity and the second quantity.

[0040] In the above embodiment, the first information may include the first quantity, the second quantity, or the first quantity and the second quantity according to different situations. In this way, the flexibility of uplink OTFS frame configuration can be improved while ensuring the delay between downlink OTFS frames and uplink OTFS frames.

[0041] In combination with some embodiments of the first aspect, in some embodiments, the above method may further include: sending second information, where the second information is used to indicate parameters related to the downlink OTFS frame.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the second information may include at least one of the following: the duration of the downlink OTFS frame carrying PDCCH; the duration of the downlink OTFS frame carrying PDSCH; the duration of the downlink OTFS frame.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a third number, wherein the third number is the number of time slots; an offset duration.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the downlink OTFS frame and the uplink OTFS frame may satisfy at least one of the following: the uplink OTFS frame is scheduled by the downlink OTFS frame; and the uplink OTFS frame is used to confirm and feedback the downlink OTFS frame.

[0045] In a second aspect, embodiments of the present disclosure provide a communication method, including receiving first information, wherein the first information indicates at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, and an index of the uplink OTFS frame.

[0046] In combination with some embodiments of the second aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a first number, wherein the first number is the number of downlink OTFS frames carrying PDCCH; a second number, wherein the second number is the number of downlink OTFS frames carrying PDSCH.

[0047] In combination with some embodiments of the second aspect, in some embodiments, the first information may include one of the following: a first quantity and a second quantity; the larger of the first quantity and the second quantity; the smaller of the first quantity and the second quantity; or either of the first quantity and the second quantity.

[0048] In combination with some embodiments of the second aspect, in some embodiments, the above method may further include: receiving second information, where the second information is used to indicate parameters related to the downlink OTFS frame.

[0049] In combination with some embodiments of the second aspect, in some embodiments, the second information may include at least one of the following: the duration of the downlink OTFS frame carrying PDCCH; the duration of the downlink OTFS frame carrying PDSCH; the duration of the downlink OTFS frame.

[0050] In combination with some embodiments of the second aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a third number, wherein the third number is the number of time slots; an offset duration.

[0051] In combination with some embodiments of the second aspect, in some embodiments, the downlink OTFS frame and the uplink OTFS frame may satisfy at least one of the following: the uplink OTFS frame is scheduled by the downlink OTFS frame; and the uplink OTFS frame is used to confirm and feedback the downlink OTFS frame.

[0052] In a third aspect, embodiments of the present disclosure provide a network device. The network device may include a transceiver module configured to transmit first information, where the first information indicates at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, or an index of the uplink OTFS frame.

[0053] In combination with some embodiments of the third aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a first number, wherein the first number is the number of downlink OTFS frames carrying PDCCH; a second number, wherein the second number is the number of downlink OTFS frames carrying PDSCH.

[0054] In combination with some embodiments of the third aspect, in some embodiments, the first information may include one of the following: a first quantity and a second quantity; the larger of the first quantity and the second quantity; the smaller of the first quantity and the second quantity; or either the first quantity or the second quantity.

[0055] In combination with some embodiments of the third aspect, in some embodiments, the transceiver module may further be configured to: send second information, where the second information is used to indicate parameters related to the downlink OTFS frame.

[0056] In combination with some embodiments of the third aspect, in some embodiments, the second information may include at least one of the following: the duration of the downlink OTFS frame carrying PDCCH; the duration of the downlink OTFS frame carrying PDSCH; the duration of the downlink OTFS frame.

[0057] In combination with some embodiments of the third aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a third number, wherein the third number is the number of time slots; an offset duration.

[0058] In combination with some embodiments of the third aspect, in some embodiments, the downlink OTFS frame and the uplink OTFS frame may satisfy at least one of the following: the uplink OTFS frame is scheduled by the downlink OTFS frame; and the uplink OTFS frame is used to confirm and feedback the downlink OTFS frame.

[0059] In a fourth aspect, embodiments of the present disclosure provide a terminal. The terminal may include a transceiver module. The transceiver module is configured to receive first information, where the first information indicates at least one of the following: a delay between a downlink OTFS frame and an uplink OTFS frame, or an index of the uplink OTFS frame.

[0060] In combination with some embodiments of the fourth aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a first number, wherein the first number is the number of downlink OTFS frames carrying PDCCH; a second number, wherein the second number is the number of downlink OTFS frames carrying PDSCH.

[0061] In combination with some embodiments of the fourth aspect, in some embodiments, the first information may include one of the following: a first quantity and a second quantity; the larger of the first quantity and the second quantity; the smaller of the first quantity and the second quantity; or either the first quantity or the second quantity.

[0062] In combination with some embodiments of the fourth aspect, in some embodiments, the above method may further include: receiving second information, where the second information is used to indicate parameters related to the downlink OTFS frame.

[0063] In combination with some embodiments of the fourth aspect, in some embodiments, the second information may include at least one of the following: the duration of the downlink OTFS frame carrying PDCCH; the duration of the downlink OTFS frame carrying PDSCH; the duration of the downlink OTFS frame.

[0064] In combination with some embodiments of the fourth aspect, in some embodiments, the first information is used to indicate the delay between the downlink OTFS frame and the uplink OTFS frame, and the first information may include at least one of the following: a third number, wherein the third number is the number of time slots; an offset duration.

[0065] In combination with some embodiments of the fourth aspect, in some embodiments, the downlink OTFS frame and the uplink OTFS frame may satisfy at least one of the following: the uplink OTFS frame is scheduled by the downlink OTFS frame; and the uplink OTFS frame is used to confirm and feedback the downlink OTFS frame.

[0066] In a fifth aspect, an embodiment of the present disclosure provides a network device. The network device includes one or more processors and a memory storing instructions. When the instructions are executed by the network device, the network device implements the communication method as described in any one of the first aspect and possible embodiments thereof.

[0067] In a sixth aspect, an embodiment of the present disclosure provides a terminal. The terminal includes one or more processors and a memory storing instructions. When the instructions are executed by the terminal, the terminal implements the communication method as described in any one of the second aspect and possible embodiments thereof.

[0068] In a seventh aspect, embodiments of the present disclosure provide a communication system. The communication system includes a network device and a terminal. The network device is configured to implement the communication method described in any one of the first aspect and possible embodiments thereof. The terminal is configured to implement the communication method described in any one of the second aspect and possible embodiments thereof.

[0069] In an eighth aspect, an embodiment of the present disclosure provides a storage medium storing instructions that, when executed on a communication device, cause the communication device to execute the communication method as described in any one of the first aspect, the second aspect, and possible embodiments thereof.

[0070] In a ninth aspect, an embodiment of the present disclosure provides a program product. When the program product is executed by a communication device, the communication device executes the communication method as described in any one of the first aspect, the second aspect, and possible embodiments thereof.

[0071] In a tenth aspect, an embodiment of the present disclosure provides a computer program. When the computer program is executed on a computer, the computer executes the communication method as described in any one of the first aspect, the second aspect, and possible embodiments thereof.

[0072] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit. The processing circuit is configured to execute the communication method as described in any one of the first aspect, the second aspect, and possible embodiments thereof.

[0073] It is understandable that the aforementioned network devices, terminals, communication systems, storage media, program products, computer programs, chips, and chip systems are all used to execute the methods provided by 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.

[0074] The present disclosure provides a communication method, terminal, network device, communication system, and storage medium. In some embodiments, the terms communication method, information processing method, and information transmission method are interchangeable; the terms network element, network device, network function, and network entity are interchangeable; and the terms communication system and information processing system are interchangeable.

[0075] 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.

[0076] In the embodiments of the present disclosure, unless otherwise specified or there is a logical conflict, 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.

[0077] 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.

[0078] 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 articles such as "a", "an", "the" in English are used in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0079] In the embodiments of the present disclosure, “plurality” refers to two or more than two.

[0080] In some embodiments, the terms "at least one", "one or more", etc. can be used interchangeably.

[0081] 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.

[0082] 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.

[0083] 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 example, if the description object is "information", then the "second information" and the "first information" can be the same information or different information, and their contents can be the same or different.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0088] In some embodiments, "network" can be interpreted as devices included in the network (e.g., access network devices, core network devices, etc.). For example, a network device may include at least one access network device. For another example, a network device may include at least one core network device. For another example, a network device may include at least one access network device and at least one core network device.

[0089] In some embodiments, the core network device may include at least one network element. Then, the network device including the core network device means that the network device may include at least one network element.

[0090] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0091] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0092] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0093] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0094] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0095] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0096] 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.

[0097] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 includes a terminal 110 and a network device 120 .

[0098] In some embodiments, the terminal 110 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.

[0099] In some embodiments, the network device 120 may include at least one of an access network device and a core network device.

[0100] In some embodiments, the access network device may be, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a satellite base station, 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.

[0101] In some embodiments, the terminal and the core network device may interact through the access network device. In some embodiments, the terminal and the core network device may interact directly. This is not specifically limited in the embodiments of the present disclosure.

[0102] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0103] 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.

[0104] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0105] 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 provided by 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 provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0106] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0107] 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, the fourth generation mobile communication system (4 th generation mobile communication system, 4G), fifth generation mobile communication system (5 thgeneration 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-Wide Band (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine-to-Machine (M2M) system, Internet of Things (IoT) Things (IoT) systems, vehicle-to-everything (V2X), systems using other communication methods, and next-generation systems based on these methods. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G).

[0108] In recent years, high-speed railways (HSR) have developed on a large scale, and vehicle communication systems on highways have become increasingly popular. This has led to widespread attention on wireless communication systems in high-speed mobile environments. One of the goals of developing communication systems is to provide users in highly mobile vehicles (for example, speeds exceeding 500 kilometers per hour) with bursty broadband services and to ensure data transmission rates (for example, no less than 150 Mbps). However, most current communication systems can only guarantee high data transmission rates and provide high-quality services in low- and medium-speed mobile environments. In high-speed mobile scenarios, the coverage range and transmission rate of wireless communication systems are significantly limited.

[0109] In some cases, communication systems face numerous obstacles in high-mobility scenarios. First, communication systems are subject to rapidly time-varying fading. Increased mobility leads to an enhanced Doppler effect, resulting in large Doppler shift and spread in the communication system. This significantly degrades the communication system's performance. Furthermore, changes in terminal velocity cause variations in the attenuation coefficient and result in time-varying Doppler spread. This rapidly changing wireless transmission environment complicates channel analysis and modeling. Second, communication systems also experience frequency offset. Doppler shift in the signal received at the receiver can cause frequency mismatch between the transmitter and receiver. In multi-carrier systems, carrier frequency offset (CFO) can destroy the orthogonality between carriers and introduce inter-carrier interference (ICI). Due to the time-varying nature of Doppler frequency offset, the accuracy of Doppler frequency offset estimation and tracking can be affected in high-mobility scenarios. For high-mobility scenarios, a new network architecture is required to meet the performance requirements of the communication system. The new network architecture needs to be able to ensure the reliability and accuracy of fast and frequent switching, and support the high penetration loss of signals caused by high mobility (such as in high-speed railways).

[0110] OTFS modulation is a two-dimensional modulation scheme in the DD domain. Compared to modulation schemes based on the time-frequency (TF) domain, OTFS modulation converts a double-dispersion channel into a nearly flat-fading channel in the DD domain through a series of two-bit transformations. In the DD domain, every symbol in a data frame experiences essentially the same fading. This results in significant performance gains for OTFS modulation.

[0111] Figure 2 is a schematic diagram of the system architecture of OTFS modulation. As shown in Figure 2, in some embodiments, at the transmitting end, the signal x(k,l) in the DD domain is converted to the TF domain through the inverse symplectic finite Fourier transform (ISFFT) to obtain the signal X[n,m]. Thereafter, the signal X[n,m] is converted to the time domain through the Heisenberg transform to obtain the signal s(t). At the receiving end, data recovery is achieved by using the inverse operation of the transmitting end. At the receiving end, the received time domain signal r(t). The signal r(t) is converted to the TF domain through the Wigner transform to obtain the signal Y[n,m]. Thereafter, the signal Y[n,m] is converted to the DD domain through the symplectic finite Fourier transform (SFFT) to obtain the signal y(k,l).

[0112] In some embodiments, the Heisenberg transform can be an inverse fast Fourier transform, and the Wigner transform can be a fast Fourier transform (FFT). In this case, the portion in the TF domain can be a system architecture that uses orthogonal frequency division multiplexing (OFDM) modulation. Thus, the system architecture shown in FIG2 becomes an OTFS-OFDM system. Specifically, an ISFFT module is added to the transmitting end of the OFDM system to perform signal preprocessing, and an SFFT module is added to the receiving end. In this way, the fusion of OTFS and OFDM is achieved.

[0113] Figure 3 is a schematic diagram of data mapping for OTFS modulation. Here, the physical downlink shared channel (PDSCH) is used as an example. As shown in Figure 3, in some embodiments, in the DD domain, one OTFS frame can carry user data for three users, UE1, UE2, and UE3. The resources for the user data of users UE1, UE2, and UE3 in the DD domain are orthogonal. When the signal is converted from the DD domain to the TF domain via an ISFET, a symbol in the DD domain is expanded into a superposition of two-dimensional basis functions in the TF domain. At this point, it can be assumed that each symbol in the DD domain traverses the same channel, meaning that the channel in the DD domain is time-invariant within the scope of an OTFS frame. At the receiving end, the user data of users UE1, UE2, and UE3 must be received entirely in the TF domain, then transformed to the DD domain using an SFFT. After channel estimation, data detection, and demodulation, the user data for each user UE1, UE2, and UE3 can be obtained. It is understandable that the reception, channel estimation, data detection, and data demodulation processes performed at the receiving end take a considerable amount of time.

[0114] In some cases, the physical downlink control channel (PDCCH) carries scheduling information for the physical uplink control channel (PUCCH) and / or physical uplink shared channel (PUSCH). This scheduling information includes, but is not limited to, resource indicators, power indicators, and feedback information indicators. In the OTFS system, because the reception and demodulation of the PDCCH requires a certain amount of time, there may be a certain delay between the PDCCH and the PUCCH and / or PUSCH scheduled by the scheduling information in the PDCCH.

[0115] In some cases, ACK (acknowledgement, positive acknowledgment) / NACK (non-acknowledgement, negative acknowledgment) feedback for the PDSCH can be sent on the PUSCH or PUCCH. ACK feedback can be used for positive acknowledgment of the PDSCH. NACK feedback can be used for negative acknowledgment of the PDSCH. In the OTFS system, because the reception and demodulation of the PDSCH require a certain amount of time, there may be a certain delay between the PUSCH or PUCCH carrying the ACK / NACK feedback and the corresponding PDSCH.

[0116] FIG4 is an exemplary interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG4 , an embodiment of the present disclosure relates to a communication method. The method includes steps S410 to S440.

[0117] In step S410 , the network device 120 sends second information to the terminal 110 .

[0118] In some embodiments, terminal 110 may receive second information from network device 120 .

[0119] In some embodiments, the second information may be used to indicate parameters related to the downlink OTFS frame. Specifically, the parameters related to the downlink OTFS frame may be used to characterize the downlink OTFS frame. In some embodiments, the parameters related to the downlink OTFS frame may include the length of the downlink OTFS frame in the time domain.

[0120] In some embodiments, the second information may include the duration of a downlink OTFS frame carrying the PDCCH. Specifically, the downlink OTFS frame may be a downlink OTFS frame carrying the PDCCH, and the downlink OTFS frame-related parameter indicated by the second information may be the duration of the downlink OTFS frame carrying the PDCCH. It is understood that the duration of the downlink OTFS frame carrying the PDCCH may be the basic duration of the downlink OTFS frame for the PDCCH specified in the OTFS system.

[0121] In some embodiments, the second information may include the duration of a downlink OTFS frame carrying the PDSCH. Specifically, the downlink OTFS frame may be a downlink OTFS frame carrying the PDSCH. The downlink OTFS frame-related parameter indicated by the second information may be the duration of the downlink OTFS frame carrying the PDSCH. It is understood that the duration of the downlink OTFS frame carrying the PDSCH may be the basic duration of a downlink OTFS frame for the PDSCH specified in the OTFS system.

[0122] In some embodiments, the duration of the downlink OTFS frame carrying the PDCCH may be equal to or different from the duration of the downlink OTFS frame carrying the PDSCH.

[0123] In some embodiments, the second information may include the duration of a downlink OTFS frame. Specifically, the duration of a downlink OTFS frame may indicate the total duration of at least one downlink OTFS frame carrying a PDCCH and at least one downlink OTFS frame carrying a PDSCH. It is understood that the duration of a downlink OTFS frame may be a duration specified in the OTFS system. In one example, the duration of a downlink OTFS frame may be a fixed value.

[0124] In some embodiments, the second information may include at least one of the duration of the downlink OTFS frame carrying the PDCCH, the duration of the downlink OTFS frame carrying the PDSCH, and the duration of the downlink OTFS frame. Of course, the second information may also include other information, which is not specifically limited in the embodiments of the present disclosure.

[0125] In some embodiments, the second information may be carried in a signaling message. In one example, the second information may be carried in a radio resource control (RRC) message. In one example, the second information may be carried in downlink control information (DCI).

[0126] Through step S410, terminal 110 can obtain the second information from network device 120. It is understood that in some scenarios, some or all of the content in the second information may be fixed by the system configuration. In this case, the part or all of the content in the second information may not be sent by network device 120 to terminal 110, but may be obtained by terminal 110 according to the fixed system configuration. If the entire content in the second information is obtained by terminal 110 according to the fixed system configuration, step S410 may not be performed in the embodiment of the present disclosure.

[0127] In step S420 , the network device 120 sends first information to the terminal 110 .

[0128] In some embodiments, the terminal 110 may receive first information from the network device 120. The first information may be used by the terminal 110 to determine an uplink OTFS frame.

[0129] In some embodiments, the first information may be used to indicate a delay between a downlink OTFS frame and an uplink OTFS frame. More specifically, the delay may be a delay between the last symbol of a downlink OTFS frame and the first symbol of a corresponding uplink OTFS frame.

[0130] In some embodiments, the downlink OTFS frame may carry PDCCH and / or PDSCH. It is understood that the downlink OTFS frame may also carry other channels, which is not specifically limited in the embodiments of the present disclosure.

[0131] In some embodiments, the uplink OTFS frame may carry PUCCH and / or PUSCH. It is understood that the uplink OTFS frame may also carry other channels, which is not specifically limited in the embodiments of the present disclosure.

[0132] In some embodiments, the downlink OTFS frame may schedule the uplink OTFS frame. Figure 5A is a schematic diagram of a first embodiment of the time delay between the downlink channel and the uplink channel provided according to an embodiment of the present disclosure. As shown in Figure 5A, the PDCCH in the downlink (DL) direction schedules the PUCCH in the uplink (UL) direction. The time delay may be the time delay between the downlink OTFS frame carrying the PDCCH and the uplink OTFS frame carrying the PUCCH. Figure 5B is a schematic diagram of a second embodiment of the time delay between the downlink channel and the uplink channel provided according to an embodiment of the present disclosure. As shown in Figure 5B, the PDCCH in the DL direction schedules the PUSCH in the UL direction. The time delay may be the time delay between the downlink OTFS frame carrying the PDCCH and the uplink OTFS frame carrying the PUSCH.

[0133] In some embodiments, the uplink OTFS frame may carry confirmation feedback for the uplink OTFS frame. Figure 5C is a schematic diagram of a third embodiment of the time delay between the downlink channel and the uplink channel provided according to an embodiment of the present disclosure. As shown in Figure 5C, the confirmation feedback for the PDSCH may be carried in the PUCCH. The time delay may be the time delay between the downlink OTFS frame carrying the PDSCH and the uplink OTFS frame carrying the PUCCH. Figure 5D is a schematic diagram of a fourth embodiment of the time delay between the downlink channel and the uplink channel provided according to an embodiment of the present disclosure. As shown in Figure 5D, the confirmation feedback for the PDSCH may be carried in the PUSCH. The time delay may be the time delay between the downlink OTFS frame carrying the PDSCH and the uplink OTFS frame carrying the PUSCH.

[0134] In some embodiments, the first information may include at least one of the following: a first parameter and a second parameter. In some embodiments, the first parameter is related to a downlink OTFS frame carrying a PDCCH. In some embodiments, the second parameter is related to a downlink OTFS frame carrying a PDSCH.

[0135] In some embodiments, the first parameter may be a first quantity. The first quantity is the number of downlink OTFS frames carrying the PDCCH. Specifically, the PDCCH may be carried in one or more downlink OTFS frames. In this case, the number of downlink OTFS frames used to carry the PDCCH is the first quantity. It is understood that the first quantity may be used to represent the delay between the downlink OTFS frame and the uplink OTFS frame. Specifically, the larger the first quantity, the greater the delay between the downlink OTFS frame and the uplink OTFS frame; the smaller the first quantity, the smaller the delay between the downlink OTFS frame and the uplink OTFS frame.

[0136] In some embodiments, the second parameter may be a second quantity. The second quantity is the number of downlink OTFS frames carrying PDSCH. Specifically, PDSCH may be carried in one or more downlink OTFS frames. In this case, the number of downlink OTFS frames used to carry PDSCH is the second quantity. It is understandable that the second quantity may be used to represent the delay between the downlink OTFS frame and the uplink OTFS frame. Specifically, the larger the first quantity, the greater the delay between the downlink OTFS frame and the uplink OTFS frame; the smaller the first quantity, the smaller the delay between the downlink OTFS frame and the uplink OTFS frame.

[0137] In some embodiments, the first information may include at least one of a first quantity and a second quantity. It is understood that, when the first information includes one of the first quantity and the second quantity, the first quantity or the second quantity in the first information may apply to both downlink OTFS frames carrying PDCCHs and downlink OTFS frames carrying PDSCHs. In other words, the first quantity or the second quantity in the first information may represent both the number of downlink OTFS frames carrying PDCCHs and the number of downlink OTFS frames carrying PDSCHs.

[0138] In one example, the first information may include a first quantity and a second quantity. Specifically, the number of downlink OTFS frames carrying PDCCH and the number of downlink OTFS frames carrying PDSCH may be different, and the first quantity is not equal to the second quantity. In this case, the first information may include the first quantity and the second quantity.

[0139] In one example, the first information may include the larger of a first quantity and a second quantity. Specifically, the number of downlink OTFS frames carrying the PDCCH may be different from the number of downlink OTFS frames carrying the PDSCH, and thus the first quantity is not equal to the second quantity. In this case, if the first quantity is greater than the second quantity, the first information may include the first quantity; otherwise, the first information may include the second quantity.

[0140] In one example, the first information may include the smaller of a first quantity and a second quantity. Specifically, the number of downlink OTFS frames carrying the PDCCH may be different from the number of downlink OTFS frames carrying the PDSCH, and thus the first quantity is not equal to the second quantity. In this case, if the first quantity is greater than the second quantity, the first information may include the second quantity; otherwise, the first information may include the first quantity.

[0141] In one example, the first information may include either a first quantity or a second quantity. Specifically, if the number of downlink OTFS frames carrying the PDCCH and the number of downlink OTFS frames carrying the PDSCH are the same, then the first quantity is equal to the second quantity. In this case, the first information may include either the first quantity or the second quantity.

[0142] In some embodiments, the first information may include at least one of the following: a third quantity, an offset duration.

[0143] In some embodiments, the third number may be the number of time slots.

[0144] In some embodiments, the duration of a time slot is a system-fixed parameter.

[0145] In some embodiments, the offset duration may be used to represent a time offset.

[0146] It should be noted that, in some cases, the first information may include the first parameter, the second parameter, the third quantity, and the offset duration at the same time; in some cases, the first information may only include at least one of the first parameter and the second parameter; in some cases, the first information may only include at least one of the third quantity and the offset duration. The embodiments of the present disclosure do not make specific limitations on this.

[0147] In some embodiments, the first information may be used to indicate the index of the uplink OTFS frame. Specifically, the first information may include the index number of the uplink OTFS frame.

[0148] In some embodiments, the first information may be carried in a signaling message. In one example, the first information may be carried in an RRC message. In one example, the first information may be carried in a DCI.

[0149] In step S420, terminal 110 can obtain the first information from network device 120. It is understood that in some scenarios, some or all of the content in the first information may be fixedly configured by the system. In this case, the network device 120 may not send the part or all of the content in the first information to terminal 110, but instead the terminal 110 may obtain the part or all of the content according to the fixed system configuration.

[0150] In step S430 , the terminal 110 determines an uplink OTFS frame.

[0151] In some embodiments, the terminal 110 may determine an uplink OTFS frame according to the first information.

[0152] In some embodiments, the terminal 110 may determine the time delay between the downlink OTFS frame and the uplink OTFS frame according to the first information, thereby determining the uplink OTFS frame.

[0153] In some embodiments, the delay between the downlink OTFS frame and the uplink OTFS frame can be calculated using the following formula:

[0154] Among them, K t Indicates the delay between the downlink OTFS frame and the uplink OTFS frame; Indicates the duration of the downlink OTFS frame carrying PDCCH; Indicates the duration of the downlink OTFS frame carrying PDSCH; M indicates the first number; N indicates the second number; n indicates the third number; T slot Indicates the duration of the time slot; T offset Indicates the offset duration.

[0155] In some embodiments, the duration of the downlink OTFS frame can be In this case, the duration of the downlink OTFS frame can be obtained through the second information or through a fixed system configuration.

[0156] In some embodiments, n×T in formula (1) slot +T offset It can be obtained by fixed configuration of the system. In one example, n×T slot +T offset Can have a fixed value.

[0157] In some embodiments, the terminal 110 may obtain an index of the uplink OTFS frame according to the first information to determine the uplink OTFS frame. Here, the determined uplink OTFS frame may have the index indicated in the first information.

[0158] In step S440 , the terminal 110 sends an uplink OTFS frame to the network device 120 .

[0159] In some embodiments, terminal 110 may send an uplink OTFS frame after a determined delay.

[0160] In some embodiments, the terminal 110 may send an uplink OTFS frame corresponding to the index in the first information.

[0161] In some embodiments, the uplink OTFS frame may be scheduled by the downlink OTFS frame.

[0162] In some embodiments, an uplink OTFS frame may carry acknowledgment feedback for a downlink OTFS frame. In some embodiments, the acknowledgment feedback may be ACK / NACK feedback. In one example, an uplink OTFS frame may carry ACK feedback for a downlink OTFS frame. In another example, an uplink OTFS frame may carry NACK feedback for a downlink OTFS frame.

[0163] 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", "program", and "chip" can be used interchangeably.

[0164] 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.

[0165] In some embodiments, the terms "DCI", "DL assignment", "DL DCI", "UL grant", "UL DCI" and the like may be used interchangeably.

[0166] In some embodiments, terms such as "PDSCH" and "DL data" may be used interchangeably, and terms such as "PUSCH" and "UL data" may be used interchangeably.

[0167] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0168] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0169] 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.

[0170] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0171] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "some", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "some 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, some A, any A, or first A, etc., but not limited to this.

[0172] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0173] The communication method according to the embodiments of the present disclosure may include at least one of steps S410 to S440. For example, S420 may be implemented as an independent embodiment, the combination of steps S410 and S420 may be implemented as an independent embodiment, and the combination of steps S420 and S430 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0174] In some embodiments, steps S410, S430, and S440 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0175] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 .

[0176] FIG6 is an exemplary flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6 , an embodiment of the present disclosure relates to a communication method. The communication method in this embodiment can be executed by network device 120. The communication method includes steps S610 to S630.

[0177] In step S610, the second information is sent.

[0178] Optional implementations of step S610 can refer to the optional implementations of step S410 in FIG4 and other related parts in the embodiment involved in FIG4 , which will not be described in detail here.

[0179] In some embodiments, the network device 120 may send the second information to the terminal 110 , but is not limited thereto and may also send the second information to other entities.

[0180] In step S620, the first information is sent.

[0181] Optional implementations of step S620 can refer to the optional implementations of step S420 in FIG. 4 and other related parts in the embodiment involved in FIG. 4 , which will not be described in detail here.

[0182] In some embodiments, the network device 120 may send the first information to the terminal 110 , but is not limited thereto and may also send the first information to other entities.

[0183] In some embodiments, the first information can be used by the terminal 110 to determine the uplink OTFS frame. For optional implementations, see the optional implementations of step S430 in FIG. 4 and other related parts of the embodiment involved in FIG. 4 , which will not be repeated here.

[0184] In step S630, an uplink OTFS frame is obtained.

[0185] The optional implementation of step S630 can refer to the optional implementation of step S440 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0186] In some embodiments, the network device 120 may receive an uplink OTFS frame sent by the terminal 110 , but is not limited thereto and may also receive an uplink OTFS frame sent by other entities.

[0187] The communication method involved in the embodiment of the present disclosure may include at least one of steps S610 to S630. For example, S620 may be implemented as an independent embodiment, and the combination of steps S610 and S620 may be implemented as an independent embodiment, but is not limited thereto.

[0188] In some embodiments, steps S610 and S630 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0189] FIG7 is an exemplary flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG7 , an embodiment of the present disclosure relates to a communication method. The communication method in this embodiment can be executed by terminal 110. The communication method includes steps S710 to S740.

[0190] In step S710, second information is obtained.

[0191] Optional implementations of step S710 can refer to the optional implementations of step S410 in FIG4 and other related parts in the embodiment involved in FIG4 , which will not be described in detail here.

[0192] In some embodiments, the terminal 110 may receive the second information sent by the network device 120 , but is not limited thereto and may also receive the second information sent by other entities.

[0193] In some embodiments, terminal 110 may obtain second information specified by the protocol.

[0194] In some embodiments, terminal 110 may obtain the second information from an upper layer.

[0195] In some embodiments, the terminal 110 may perform processing to obtain the second information.

[0196] In some embodiments, step S710 may be omitted, and the terminal 110 may autonomously implement the function indicated by the second information, or the above function may be default or acquiescent.

[0197] In step S720, first information is obtained.

[0198] The optional implementation of step S720 can refer to the optional implementation of step S420 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0199] In some embodiments, the terminal 110 may receive the first information sent by the network device 120 , but is not limited thereto and may also receive the first information sent by other entities.

[0200] In some embodiments, terminal 110 may obtain first information specified by a protocol.

[0201] In some embodiments, terminal 110 may obtain the first information from a higher layer.

[0202] In some embodiments, the terminal 110 may perform processing to obtain the first information.

[0203] In some embodiments, step S710 may be omitted, and the terminal 110 may autonomously implement the function indicated by the first information, or the above function may be default or acquiescent.

[0204] In step S730 , an uplink OTFS frame is determined.

[0205] The optional implementation of step S730 can refer to the optional implementation of step S430 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0206] In some embodiments, the uplink OTFS frame may be determined according to the first information.

[0207] In step S740 , an uplink OTFS frame is sent.

[0208] The optional implementation of step S740 can refer to the optional implementation of step S440 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.

[0209] In some embodiments, the terminal 110 may send an uplink OTFS frame to the network device 120 , but is not limited thereto and may also send an uplink OTFS frame to other entities.

[0210] The communication method according to the embodiments of the present disclosure may include at least one of steps S710 to S740. For example, step S720 may be implemented as an independent embodiment, the combination of steps S710 and S720 may be implemented as an independent embodiment, and the combination of steps S720 and S730 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0211] In some embodiments, steps S710, S730, and S740 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0212] In the embodiment of the present disclosure, step S720 may be combined with step S610 of FIG. 6 , and step S730 may be combined with step S620 of FIG. 6 .

[0213] FIG8 is an exemplary interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG8 , an embodiment of the present disclosure relates to a communication method. The communication method includes step S810.

[0214] In step S810 , the network device 120 sends first information to the terminal 110 .

[0215] Optional implementations of step S810 can refer to the optional implementations of step S420 in Figure 4, step S620 in Figure 6, step S720 in Figure 7, and other related parts in the embodiments involved in Figures 4, 6, and 7, which will not be repeated here.

[0216] In some embodiments, the above-mentioned communication method may include the method described in the aforementioned embodiments of the communication system side, network device side, terminal side, etc., which will not be repeated here.

[0217] Hereinafter, the embodiment of the present disclosure is exemplified by a specific implementation. In this specific implementation, the network device 120 may be an access network device.

[0218] The delay between the last symbol of the terminal's downlink OTFS frame and the first symbol of the uplink OTFS frame is:

[0219] Among them, K t Indicates the delay between the downlink OTFS frame and the uplink OTFS frame; Indicates the duration of the downlink OTFS frame carrying PDCCH; Indicates the duration of the downlink OTFS frame carrying PDSCH; M indicates the first number; N indicates the second number; n indicates the third number; T slot Indicates the duration of the time slot; T offset Indicates the offset duration.

[0220] In some embodiments, n×T slot +T offs It can be a fixed value or configurable (usually a fixed value). slot +T offset It is configurable. The access network device can indicate n and / or T to the terminal. offset Here, T slot is a fixed parameter of the system.

[0221] In some embodiments, Can be fixed or configurable (usually configurable). It is configurable and the access network device can provide instructions.

[0222] In one embodiment, the access network device may indicate N and M. At this time, it is considered that the sizes (or numbers) of downlink PDSCH frames and downlink PDCCH frames are different.

[0223] In one embodiment, the access network device may indicate M or N. In this case, the size (or number) of the downlink PDSCH frame and the downlink PDCCH frame is the same, or the larger or smaller value of the downlink PDSCH frame and the downlink PDCCH frame is considered. Alternatively, A fixed time T can be used frame .

[0224] In one embodiment, the access network device may indicate the index of the uplink OTFS frame scheduled by the PDCCH, or may indicate the index of the uplink OTFS frame for feeding back ACK / NACK. Here, the index may be indicated instead of the absolute time.

[0225] In some embodiments, T frame It can be a fixed system configuration or indicated in advance by RRC signaling.

[0226] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0227] The embodiments of the present disclosure also provide a communication device for implementing any of the above methods. For example, the embodiments of the present disclosure also provide another communication device, including units or modules for implementing each step performed by the network device in any of the above methods. For example, the embodiments of the present disclosure also provide another communication device, including units or modules for implementing each step performed by the terminal in any of the above methods.

[0228] It should be understood that the division of the various units or modules in the above devices 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 devices, 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.

[0229] 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, 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 a dedicated integrated circuit or a programmable logic device, 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.

[0230] Figure 9A is an exemplary structural diagram of a network device provided according to an embodiment of the present disclosure. As shown in Figure 9A, the network device 120 may include a transceiver module 9101. In some embodiments, the transceiver module 9101 is configured to send first information, wherein the first information is used to indicate at least one of the following: the delay between the downlink OTFS frame and the uplink OTFS frame, and the index of the uplink OTFS frame. Optionally, the transceiver module 9101 can be configured to execute at least one of the communication steps such as sending and / or receiving performed by the network device 120 in any of the above methods (for example, steps S410, S420, S440, S610, S620, S630, S810), which will not be repeated here.

[0231] Figure 9B is an exemplary structural diagram of a terminal provided according to an embodiment of the present disclosure. As shown in Figure 9B, the terminal 110 may include a transceiver module 9201 and a processing module 9202. In some embodiments, the transceiver module 9201 is configured to receive first information, wherein the first information is used to indicate at least one of the following: the delay between the downlink OTFS frame and the uplink OTFS frame, and the index of the uplink OTFS frame. Optionally, the transceiver module 9201 can be configured to perform at least one of the communication steps such as sending and / or receiving performed by the network device 120 in any of the above methods (for example, steps S410, S420, S440, S710, S720, S740, S810), which are not described in detail here. Optionally, the processing module 9202 can be configured to perform at least one of the other steps (for example, steps S430, S730) other than the communication steps such as sending and / or receiving performed by the network device 120 in any of the above methods, which are not described in detail here.

[0232] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module. The transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0233] In some embodiments, the processing module can be a single module or include multiple submodules. Optionally, the multiple submodules each execute all or part of the steps required to be executed by the processing module. Optionally, the processing module and the processor can be interchangeable.

[0234] Figure 10A is a schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure. Communication device 10100 can be a network device (e.g., an access network device, a core network device, etc.), or can be a chip, a chip system, or a processor that supports the network device in implementing any of the above methods. Communication device 10100 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.

[0235] As shown in Figure 10A, the communication device 10100 includes one or more processors 10101. The processor 10101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the 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. Optionally, the communication device 10100 is used to perform any of the above methods. Optionally, one or more processors 10101 are used to call instructions to enable the communication device 10100 to perform any of the above methods.

[0236] In some embodiments, the communication device 10100 further includes one or more transceivers 10102. When the communication device 10100 includes one or more transceivers 10102, the transceiver 10102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, steps S410, S420, and S440, but not limited thereto), and the processor 10101 performs at least one of the other steps (for example, step S430, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0237] In some embodiments, the communication device 10100 further includes one or more memories 10103 for storing data. Alternatively, all or part of the memories 10103 may be located outside the communication device 10100. In alternative embodiments, the communication device 10100 may include one or more interface circuits 10104. Optionally, the interface circuits 10104 are connected to the memories 10103 and may be configured to receive data from the memories 10103 or other devices, or to send data to the memories 10103 or other devices. For example, the interface circuits 10104 may read data stored in the memories 10103 and send the data to the processor 10101.

[0238] The communication device 10100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 10100 described in the present disclosure is not limited thereto, and the structure of the communication device 10100 may not be limited by FIG. 10A . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0239] FIG10B is a schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. If the communication device 10100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 10200 shown in FIG10B , but the present invention is not limited thereto.

[0240] The chip 10200 includes one or more processors 10201. The chip 10200 is configured to execute any of the above methods.

[0241] In some embodiments, chip 10200 further includes one or more interface circuits 10202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 10200 further includes one or more memories 10203 for storing data. Alternatively, all or part of memory 10203 may be located external to chip 10200. Optionally, interface circuit 10202 is connected to memory 10203 and may be configured to receive data from memory 10203 or other devices, or to send data to memory 10203 or other devices. For example, interface circuit 10202 may read data stored in memory 10203 and send the data to processor 10201.

[0242] In some embodiments, interface circuit 10202 performs at least one of the communication steps (e.g., steps S410, S420, and S440, but not limited thereto) in the above method. Interface circuit 10202 performing the communication steps (e.g., steps S410, S420, and S440, but not limited thereto) in the above method, for example, means that interface circuit 10202 performs data exchange between processor 10201, chip 10200, memory 10203, or a transceiver device. In some embodiments, processor 10201 performs at least one of the other steps (e.g., S430, but not limited thereto).

[0243] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0244] The embodiments of the present disclosure further provide a storage medium having instructions stored thereon. When the instructions are executed on the communication device 10100, the communication device 10100 is caused 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.

[0245] The embodiments of the present disclosure further provide a program product, which, when executed by the communication device 10100, enables the communication device 10100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0246] The embodiments of the present disclosure further provide a computer program, which, when executed on a computer, enables the computer to execute any of the above methods.

[0247] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0248] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A communication method, include: Send first information, wherein the first information is used to indicate at least one of the following: a time delay between a downlink orthogonal time-frequency space (OTFS) frame and an uplink OTFS frame, and an index of an uplink OTFS frame.

2. The method according to claim 1, in, The first information is used to indicate a delay between the downlink OTFS frame and the uplink OTFS frame, and the first information includes at least one of the following: A first number, wherein the first number is the number of downlink OTFS frames carrying a physical downlink control channel PDCCH; A second number, wherein the second number is the number of downlink OTFS frames carrying a physical downlink shared channel PDSCH.

3. The method according to claim 2, in, The first information includes one of the following: the first quantity and the second quantity; the greater of the first amount and the second amount; the smaller of the first amount and the second amount; Any of the first number and the second number.

4. The method according to claim 2 or 3, in, The method further comprises: Send second information, where the second information is used to indicate parameters related to the downlink OTFS frame.

5. The method according to claim 4, in, The second information includes at least one of the following: Duration of the downlink OTFS frame carrying PDCCH; Duration of the downlink OTFS frame carrying PDSCH; The duration of the downlink OTFS frame.

6. The method according to any one of claims 1 to 5, in, The first information is used to indicate a delay between the downlink OTFS frame and the uplink OTFS frame, and the first information includes at least one of the following: a third number, wherein the third number is the number of time slots; Offset duration.

7. The method according to any one of claims 1 to 6, in, The downlink OTFS frame and the uplink OTFS frame satisfy at least one of the following: The uplink OTFS frame is scheduled by the downlink OTFS frame; The uplink OTFS frame is used to provide confirmation feedback for the downlink OTFS frame.

8. A communication method, include: First information is received, wherein the first information is used to indicate at least one of the following: a time delay between a downlink orthogonal time-frequency space (OTFS) frame and an uplink OTFS frame, and an index of an uplink OTFS frame.

9. The method according to claim 8, in, The first information is used to indicate a delay between the downlink OTFS frame and the uplink OTFS frame, and the first information includes at least one of the following: A first number, wherein the first number is the number of downlink OTFS frames carrying a physical downlink control channel PDCCH; A second number, wherein the second number is the number of downlink OTFS frames carrying a physical downlink shared channel PDSCH.

10. The method according to claim 9, in, The first information includes one of the following: the first quantity and the second quantity; the greater of the first amount and the second amount; the smaller of the first amount and the second amount; Any of the first number and the second number.

11. The method according to claim 9 or 10, in, The method further comprises: Second information is received, where the second information is used to indicate parameters related to the downlink OTFS frame.

12. The method according to claim 11, in, The second information includes at least one of the following: Duration of the downlink OTFS frame carrying PDCCH; Duration of the downlink OTFS frame carrying PDSCH; The duration of the downlink OTFS frame.

13. The method according to any one of claims 8 to 12, in, The first information is used to indicate a delay between the downlink OTFS frame and the uplink OTFS frame, and the first information includes at least one of the following: a third number, wherein the third number is the number of time slots; Offset duration.

14. The method according to any one of claims 8 to 13, in, The downlink OTFS frame and the uplink OTFS frame satisfy at least one of the following: The uplink OTFS frame is scheduled by the downlink OTFS frame; The uplink OTFS frame is used to provide confirmation feedback for the downlink OTFS frame.

15. A network device, include: The transceiver module is configured to send first information, wherein the first information is used to indicate at least one of the following: a delay between a downlink orthogonal time-frequency space (OTFS) frame and an uplink OTFS frame, and an index of an uplink OTFS frame.

16. A terminal, include: The transceiver module is configured to receive first information, wherein the first information is used to indicate at least one of the following: a delay between a downlink orthogonal time-frequency space (OTFS) frame and an uplink OTFS frame, and an index of an uplink OTFS frame.

17. A network device, include: one or more processors; a memory storing instructions; When the instruction is executed by the network device, the network device implements the communication method as claimed in any one of claims 1 to 7.

18. A terminal, include: one or more processors; a memory storing instructions; When the instruction is executed by the terminal, the terminal implements the communication method as claimed in any one of claims 8 to 14.

19. A communication system comprising a network device and a terminal, in, The network device is configured to execute the communication method according to any one of claims 1 to 7, and the terminal is configured to execute the communication method according to any one of claims 8 to 14.

20. A storage medium storing instructions, in, When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1 to 14.

Images