Position indication method, terminal, network device and storage medium

Abstract

The present disclosure relates to the technical field of communications, in particular to a position indication method, a terminal, a network device and a storage medium, the position indication method comprising: receiving indication information sent by the network device, the indication information being used by a first terminal to determine a position of a pilot signal in a delay-Doppler domain. According to the method and the device, the terminal can determine the position of the pilot signal in the time delay-Doppler domain according to the indication information sent by the network equipment, so that the network equipment can determine that the pilot signal is located at different positions in the time delay-Doppler domain under the condition that the number of the protection resource units is relatively small, and the terminal is indicated through the indication information; therefore, the terminal can receive and send data in the time delay-Doppler domain under the condition that the number of the protection resource units is relatively small, and the resource utilization rate can be improved.

Description

Position indication method, terminal, network device and storage medium Technical Field

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

[0002] With the rapid development of wireless communication systems in recent years, due to the large-scale development of high-speed railways (HSR) and the increasing popularity of highway vehicle communication systems, wireless communication systems in high-speed mobile environments have attracted widespread attention. For example, 5G systems need to provide bursty broadband services to users on trains or high-mobility vehicles running at speeds of up to 500 km / h, for example, they need to ensure a data transmission rate of 150Mbps. However, most current wireless communication systems can only guarantee high data transmission rates and provide high-quality services in low-speed or medium-speed environments. In high-speed mobile scenarios, their coverage and transmission efficiency are severely limited.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a location indication method, a terminal, a network device, and a storage medium to solve technical problems in related technologies.

[0005] According to a first aspect of an embodiment of the present disclosure, a position indication method is proposed, which is executed by a first terminal. The method includes: receiving indication information sent by a network device, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0006] According to a second aspect of an embodiment of the present disclosure, a position indication method is proposed, which is executed by a network device. The method includes: sending indication information to a first terminal, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0007] According to the third aspect of an embodiment of the present disclosure, a position indication device is proposed, which includes: a receiving module configured to receive indication information sent by a network device, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0008] According to a fourth aspect of an embodiment of the present disclosure, a position indication device is proposed, comprising: a sending module configured to send indication information to a first terminal, wherein the indication information is used by the first terminal to determine the position of a pilot signal in a delay-Doppler domain.

[0009] According to a fifth aspect of an embodiment of the present disclosure, a position indication method is proposed, including: a network device sends indication information to a terminal; and the terminal determines the position of a pilot signal in a delay-Doppler domain according to the indication information.

[0010] According to a sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is used to execute the position indication method described in the first aspect.

[0011] According to a seventh aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; wherein the network device is used to execute the location indication method described in the second aspect.

[0012] According to the eighth aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a terminal and a network device, wherein the terminal is configured to implement the location indication method described in the first aspect, and the network device is configured to implement the location indication method described in the second aspect.

[0013] According to a ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the position indication method described in the first aspect and / or the position indication method described in the second aspect.

[0014] According to an embodiment of the present disclosure, the terminal can determine the position of the pilot signal in the delay-Doppler domain based on the indication information sent by the network device, which facilitates the network device to determine that the pilot signal is at different positions in the delay-Doppler domain when the number of protection resource units is relatively small, and instruct the terminal through the indication information, so that the terminal can receive and send data in the delay-Doppler domain when the number of protection resource units is relatively small, which is conducive to improving resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0017] FIG2 is an interactive schematic diagram showing a location indication method according to an embodiment of the present disclosure.

[0018] FIG3 is a schematic diagram showing an OTFS modulation according to an embodiment of the present disclosure.

[0019] FIG4A and FIG4B are schematic diagrams showing a pilot signal according to an embodiment of the present disclosure.

[0020] FIG5 is a schematic flowchart showing a position indication method according to an embodiment of the present disclosure.

[0021] 6A to 6C are schematic diagrams showing the positions of pilot signals according to an embodiment of the present disclosure.

[0022] 7A to 7C are schematic diagrams showing the positions of pilot signals according to an embodiment of the present disclosure.

[0023] 8A to 8C are schematic diagrams showing the positions of pilot signals according to an embodiment of the present disclosure.

[0024] FIG9 is a schematic flowchart showing a position indication method according to an embodiment of the present disclosure.

[0025] FIG10 is a schematic block diagram of a terminal according to an embodiment of the present disclosure.

[0026] FIG11 is a schematic block diagram showing a network device according to an embodiment of the present disclosure.

[0027] FIG12A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0028] FIG12B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] Embodiments of the present disclosure provide a location indication method, a terminal, a network device, and a storage medium.

[0030] In a first aspect, an embodiment of the present disclosure proposes a position indication method, which is executed by a first terminal, and the method includes: receiving indication information sent by a network device, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0031] In the above embodiment, the terminal can determine the position of the pilot signal in the delay-Doppler domain based on the indication information sent by the network device, which facilitates the network device to determine that the pilot signal is at different positions in the delay-Doppler domain when the number of protection resource units is relatively small, and instruct the terminal through the indication information, so that the terminal can receive and send data in the delay-Doppler domain when the number of protection resource units is relatively small, which is conducive to improving resource utilization.

[0032] In combination with some embodiments of the first aspect, in some embodiments, the delay-Doppler domain includes an orthogonal time-frequency space (OTFS) frame, and the OTFS frame is used to transmit a physical shared channel and the pilot signal.

[0033] In combination with some embodiments of the first aspect, in some embodiments, the physical shared channel includes at least one of the following: a physical uplink shared channel; and a physical downlink shared channel.

[0034] In combination with some embodiments of the first aspect, in some embodiments, the indication information is used to indicate at least one of the following: coordinates of the position in the delay-Doppler domain; and type of the position in the delay-Doppler domain.

[0035] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: determining, based on an association between the type and the location, a location corresponding to the type indicated by the indication information.

[0036] In combination with some embodiments of the first aspect, in some embodiments, the OTFS frame is used to transmit a physical shared channel of the first terminal.

[0037] In combination with some embodiments of the first aspect, in some embodiments, resources of the physical shared channel are less than or equal to all resources of the OTFS frame.

[0038] In conjunction with some embodiments of the first aspect, in some embodiments, the type includes at least one of the following:

[0039] The pilot signal is located at an edge of resources of the physical shared channel;

[0040] The pilot signal is located at an intersection of edges of resources of the physical shared channel;

[0041] The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the OTFS frame is used to transmit a first physical downlink shared channel (PDSCH) of the first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the first PDSCH and the second PDSCH share a pilot signal.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the relationship between the first PDSCH and the second PDSCH, and the relationship between each of the second PDSCHs, satisfies at least one of the following:

[0045] The first interval in the delay domain is greater than or equal to the delay of the next PDSCH in the adjacent PDSCHs in the delay domain;

[0046] The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0047] In combination with some embodiments of the first aspect, in some embodiments, a first sum of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the type includes at least one of the following:

[0049] The pilot signal is located at the edge of the first total resource;

[0050] The pilot signal is located at an intersection of edges of the first total resource;

[0051] The pilot signal is located within the total resource and is not located at an edge of the first total resource.

[0052] In combination with some embodiments of the first aspect, in some embodiments, the OTFS frame is used to transmit a first physical uplink shared channel (PUSCH) of the first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the relationship between the first PUSCH and the second PUSCH, and the relationship between each of the second PUSCHs, satisfies at least one of the following:

[0054] The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain;

[0055] The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift of adjacent PDSCHs in the Doppler domain.

[0056] In combination with some embodiments of the first aspect, in some embodiments, a second total resource of the first PUSCH resources, the second PUSCH resources, the third interval, and the fourth interval is less than all resources of the OTFS frame.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the type includes at least one of the following:

[0058] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain within the second total resource;

[0059] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain within the second total resource.

[0060] In a second aspect, an embodiment of the present disclosure proposes a position indication method, which is executed by a network device, and the method includes: sending indication information to a first terminal, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0061] In the above embodiment, the network device can instruct the terminal to determine the position of the pilot signal in the delay-Doppler domain through indication information, so that the network device can determine that the pilot signal is at different positions in the delay-Doppler domain when the number of protection resource units is relatively small, and instruct the terminal through indication information, so that the terminal can receive and send data in the delay-Doppler domain when the number of protection resource units is relatively small, which is conducive to improving resource utilization.

[0062] In combination with some embodiments of the second aspect, in some embodiments, the delay-Doppler domain includes an orthogonal time-frequency space (OTFS) frame, and the OTFS frame is used to transmit a physical shared channel and the pilot signal.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments, the physical shared channel includes at least one of the following: a physical uplink shared channel; and a physical downlink shared channel.

[0064] In combination with some embodiments of the second aspect, in some embodiments, the indication information is used to indicate at least one of the following: coordinates of the position in the delay-Doppler domain; and type of the position in the delay-Doppler domain.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, the method further comprises: determining, based on an association between the type and the location, a location corresponding to the type indicated by the indication information.

[0066] In combination with some embodiments of the second aspect, in some embodiments, the OTFS frame is used to transmit a physical shared channel of the first terminal.

[0067] In combination with some embodiments of the second aspect, in some embodiments, resources of the physical shared channel are less than or equal to all resources of the OTFS frame.

[0068] In conjunction with some embodiments of the second aspect, in some embodiments, the type includes at least one of the following:

[0069] The pilot signal is located at an edge of resources of the physical shared channel;

[0070] The pilot signal is located at an intersection of edges of resources of the physical shared channel;

[0071] The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

[0072] In combination with some embodiments of the second aspect, in some embodiments, the OTFS frame is used to transmit a first physical downlink shared channel (PDSCH) of the first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

[0073] In combination with some embodiments of the second aspect, in some embodiments, the first PDSCH and the second PDSCH share a pilot signal.

[0074] In combination with some embodiments of the second aspect, in some embodiments, the relationship between the first PDSCH and the second PDSCH, and the relationship between each of the second PDSCHs, satisfies at least one of the following:

[0075] The first interval in the delay domain is greater than or equal to the delay of the next PDSCH in the adjacent PDSCHs in the delay domain;

[0076] The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0077] In combination with some embodiments of the second aspect, in some embodiments, a first sum of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

[0078] In conjunction with some embodiments of the second aspect, in some embodiments, the type includes at least one of the following:

[0079] The pilot signal is located at the edge of the first total resource;

[0080] The pilot signal is located at an intersection of edges of the first sum resource;

[0081] The pilot signal is located within the total resource and is not located at an edge of the first total resource.

[0082] In combination with some embodiments of the second aspect, in some embodiments, the OTFS frame is used to transmit a first physical uplink shared channel (PUSCH) of the first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

[0083] In conjunction with some embodiments of the second aspect, in some embodiments, the relationship between the first PUSCH and the second PUSCH, and the relationship between each of the second PUSCHs, satisfies at least one of the following:

[0084] The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain;

[0085] The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift of adjacent PDSCHs in the Doppler domain.

[0086] In combination with some embodiments of the second aspect, in some embodiments, a second total resource of the first PUSCH resources, the second PUSCH resources, the third interval, and the fourth interval is less than all resources of the OTFS frame.

[0087] In conjunction with some embodiments of the second aspect, in some embodiments, the type includes at least one of the following:

[0088] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain within the second total resource;

[0089] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain within the second total resource.

[0090] In a third aspect, an embodiment of the present disclosure proposes a position indication device, which includes: a receiving module configured to receive indication information sent by a network device, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0091] In a fourth aspect, an embodiment of the present disclosure proposes a position indication device, which includes: a sending module configured to send indication information to a first terminal, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0092] In a fifth aspect, an embodiment of the present disclosure proposes a position indication method, including: a network device sends indication information to a terminal; and the terminal determines the position of a pilot signal in a delay-Doppler domain according to the indication information.

[0093] In a sixth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the position indication method described in any one of the first aspect and the optional embodiments of the first aspect.

[0094] In the seventh aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the network device is used to execute the location indication method described in any one of the second aspect and the optional embodiments of the second aspect.

[0095] In the eighth aspect, an embodiment of the present disclosure proposes a communication system, comprising a terminal and a network device, wherein the terminal is configured to implement the location indication method described in any one of the first aspect and the optional embodiments of the first aspect, and the network device is configured to implement the location indication method described in any one of the second aspect and the optional embodiments of the second aspect.

[0096] In the ninth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the location indication method described in the first aspect and / or the location indication method described in the second aspect.

[0097] In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in any one of the first aspect, the second aspect, and the optional embodiments of the first and second aspects.

[0098] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method as described in any one of the first aspect, the second aspect, and the optional embodiments of the first and second aspects.

[0099] It is understandable that the above-mentioned position indicating device, communication device, communication system, storage medium, program product, and computer program are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0100] The present disclosure provides a location indication method, terminal, network device, and storage medium. In some embodiments, the terms "location indication method" and "information processing method" and "communication method" are interchangeable; the terms "terminal" and "network device" and "information processing device" and "communication device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0101] 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.

[0102] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0103] 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.

[0104] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc.

[0105] For example, when using articles such as “a”, “an”, and “the” in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

[0106] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0107] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0108] 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.

[0109] 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.

[0110] 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 restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description objects, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be constituted due to the use of prefixes.

[0111] For example, if the description object is "field," the ordinal number preceding "field" in "first field" and "second field" does not restrict the position or order of the "fields." "First" and "second" do not restrict whether the modified "fields" are in the same message, nor do they restrict the order of the "first field" and "second field." For another example, if the description object is "level," the ordinal number preceding "level" in "first level" and "second level" does not restrict the priority of the "levels." For another example, the number of description objects is not restricted by the ordinal number and can be one or more. For example, in the case of "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the description object is "device," "first device" and "second device" can be the same or different devices, and their types can be the same or different. For another example, if the description object is "information," "first information" and "second information" can be the same or different information, and their content can be the same or different.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0122] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0123] 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.

[0124] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0125] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 , wherein the network device includes at least one of the following: an access network device and a core network device.

[0126] In some embodiments, the terminal 101 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.

[0127] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0128] 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).

[0129] 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.

[0130] 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.

[0131] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0132] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0133] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0134] FIG2 is an interactive schematic diagram showing a location indication method according to an embodiment of the present disclosure.

[0135] As shown in FIG2 , the position indication method includes the following steps:

[0136] In step S201, the network device sends indication information to the first terminal.

[0137] In some embodiments, the first terminal receives indication information.

[0138] In step S202, the first terminal determines the position of the pilot signal in the delay-Doppler domain according to the indication information.

[0139] In some embodiments, the delay-Doppler domain includes an orthogonal time-frequency space (OTFS) frame, and the OTFS frame is used to transmit a physical shared channel and the pilot signal.

[0140] In some embodiments, the physical shared channel includes at least one of the following: a physical uplink shared channel; a physical downlink shared channel.

[0141] In some embodiments, the indication information is used to indicate at least one of the following: the coordinates / position of the pilot signal in the Delay-Doppler domain; or the type of the pilot signal in the Delay-Doppler domain. In other words, the indication information may directly indicate the specific position of the pilot signal in the Delay-Doppler domain, or may indirectly indicate the specific position of the pilot signal in the Delay-Doppler domain through the type of the pilot signal.

[0142] In some embodiments, the network device determines the location corresponding to the type indicated by the indication information based on the association between the type and the location.

[0143] In some embodiments, the terminal determines the location corresponding to the type indicated by the indication information based on the association between the type and the location.

[0144] In some embodiments, the OTFS frame is used to transmit a physical shared channel of the first terminal.

[0145] In some embodiments, the resources of the physical shared channel are less than or equal to the total resources of the OTFS frame. In some embodiments, the type may indicate the relative position of the pilot signal and the resources of the physical shared channel. For example, whether the pilot signal is within or outside the resources of the physical shared channel; whether the pilot signal is located at the edge of the resources of the physical shared channel; whether the pilot signal is located at the intersection of two adjacent edges of the resources of the physical shared channel; whether the pilot signal is not located at the edge of the resources of the physical shared channel, etc.

[0146] In some embodiments, the type includes at least one of the following:

[0147] The pilot signal is located at an edge of resources of the physical shared channel;

[0148] The pilot signal is located at an intersection of edges of resources of the physical shared channel;

[0149] The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

[0150] In some embodiments, the OTFS frame is used to transmit a first physical downlink shared channel (PDSCH) of the first terminal and a second PDSCH, wherein the second PDSCH may be a PDSCH sent to at least one second terminal other than the first terminal.

[0151] In some embodiments, the first PDSCH and the second PDSCH share a pilot signal.

[0152] In some embodiments, the relationship between the first PDSCH and the second PDSCH, and the relationship between each of the second PDSCHs, satisfies at least one of the following:

[0153] The first interval in the delay domain is greater than or equal to the delay of the next PDSCH in the adjacent PDSCHs in the delay domain;

[0154] The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0155] In some embodiments, a first sum of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

[0156] In some embodiments, the type includes at least one of the following:

[0157] The pilot signal is located at the edge of the first total resource;

[0158] The pilot signal is located at an intersection of edges of the first sum resource;

[0159] The pilot signal is located within the total resource and is not located at an edge of the first total resource.

[0160] In some embodiments, the OTFS frame is used to transmit a first physical uplink shared channel PUSCH of the first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

[0161] In some embodiments, the relationship between the first PUSCH and the second PUSCH, and the relationship between each of the second PUSCHs, satisfies at least one of the following:

[0162] The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain;

[0163] The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift of adjacent PDSCHs in the Doppler domain.

[0164] In some embodiments, a second total of resources of the first PUSCH, resources of the second PUSCH, the third interval, and the fourth interval is less than all resources of the OTFS frame.

[0165] In some embodiments, the type includes at least one of the following:

[0166] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain within the second total resource;

[0167] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain within the second total resource.

[0168] The communication method involved in the embodiments of the present disclosure may include at least one of step S201 and step S202. For example, step S201 may be implemented as an independent embodiment, step S202 may be implemented as an independent embodiment, and steps S201+S202 may be implemented as independent embodiments, but are not limited thereto.

[0169] In some embodiments, steps S201 and S202 may be performed in an interchangeable order or simultaneously.

[0170] In some embodiments, step S201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0171] In some embodiments, step S202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0172] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0173] One of the application scenarios of the embodiment of the present disclosure includes a high-speed movement scenario, such as a high-speed railway (HSR) scenario.

[0174] To achieve high data transmission rates in high mobility scenarios, communication systems face the following challenges:

[0175] First, there is rapid time-varying fading. Increased mobility leads to large Doppler shifts and spreads in communication systems, which severely degrade communication performance. Furthermore, changes in terminal speed can cause changes in the attenuation coefficient and time-varying Doppler spread. The rapid changes in the wireless transmission environment further complicate channel analysis and modeling.

[0176] The second issue is frequency offset. For the receiving end, the presence of Doppler frequency offset in the received signal leads to frequency mismatch between the transmitting and receiving ends. In a multi-carrier system, carrier frequency offset (CFO) will destroy the orthogonality between carriers and introduce inter-carrier interference (ICI). In high-mobility scenarios, the time-varying nature of Doppler frequency offset poses new challenges to the accuracy of Doppler estimation and tracking. In high-mobility scenarios, designing a new network architecture to meet its characteristics and ensure communication performance requirements, how to ensure the reliability and accuracy of fast and frequent handovers, and the high signal penetration loss caused by high-speed railway systems have become urgent issues that need to be addressed in this scenario.

[0177] In some embodiments, orthogonal time-frequency and space (OTFS) modulation can be used to solve the technical problems in the above scenarios. OTFS modulation is a two-dimensional modulation scheme in the delay-Doppler (DD) domain. Different from traditional modulation schemes based on the time-frequency (TF) domain, OTFS modulation converts the dual-dispersion channel into a nearly flat-fading channel in the delay-Doppler domain through a series of two-dimensional transformations. In this domain, each symbol in a data frame experiences the same, almost constant fading, resulting in a more significant performance gain than existing modulation schemes (such as OFDM (Orthogonal Frequency Division Multiplexing)).

[0178] FIG3 is a schematic diagram showing an OTFS modulation according to an embodiment of the present disclosure.

[0179] As shown in Figure 3, during the OTFS modulation process, data modulation symbols are generated in the DD domain. The conversion of DD domain discrete symbols into time domain waveforms is generally completed in two steps. First, the DD domain is converted to the time-frequency domain through the inverse symplectic finite Fourier transform (ISFFT), and then it is converted to the time domain through the Heisenberg transform.

[0180] At the receiving end, data is recovered using operations that are inverse to those at the transmitting end. First, the received signal is converted from the time domain to the time-frequency domain using the Wigner transform, and then from the time-frequency domain to the DD domain using the Symplectic Finite Fourier Transform (SFFT). If the Heisenberg transform is specialized as the Inverse Fast Fourier Transform (IFFT), and the Wigner transform is specialized as the Fast Fourier Transform (FFT), then the inner dashed box represents an OFDM system. Therefore, the OTFS-OFDM system can be equated to a transmission system that adds an ISFFT preprocessing module to the OFDM system's transmitter and an SFFT module to the receiving end. This allows for the fusion of OTFS and OFDM systems.

[0181] FIG4A and FIG4B are schematic diagrams showing a pilot signal according to an embodiment of the present disclosure.

[0182] In the DD domain, the horizontal axis represents delay (in time units such as seconds (s), milliseconds (ms), or microseconds (μs)), and the vertical axis represents the Doppler domain (in Hertz (Hz)). The delay-Doppler domain may include orthogonal time-frequency space (OTFS) frames. An OTFS frame may include M×N resource elements (REs). An OTFS frame corresponds to M REs in the delay domain and N REs in the Doppler domain, where M and N are integers greater than 1.

[0183] A resource in the delay-Doppler domain corresponds to a delay domain unit length in the delay domain and a Doppler domain unit length in the Doppler domain. The delay domain unit length can be determined based on the bandwidth B, for example, it can be equal to 1 / B, and the Doppler unit length can be determined based on the OTFS frame time domain duration T, for example, it can be equal to 1 / T. B and T can be predetermined, for example, based on a protocol agreement, for example, determined by a manufacturer of a terminal or network device, for example, configured by the network device, and this disclosure is not limited in this regard.

[0184] A pilot signal can occupy one OTFS resource unit in an OTFS frame. One resource unit corresponds to one delay domain unit length in the delay domain and one Doppler domain unit length in the Doppler domain. Because all OTFS resource units in an OTFS frame traverse the same channel, the pilot signal can be used for channel estimation regardless of its position in the OTFS frame.

[0185] As shown in Figure 4A, taking the pilot signal at the center of the OTFS frame as an example, a guard resource unit can be set around the pilot signal. Data is not transmitted on the resources corresponding to the guard resource unit. The guard resource unit can be used to prevent the data in the OTFS frame from interfering with channel estimation. However, when the pilot signal is located outside the resources corresponding to the data, in some embodiments, the guard resource unit may not be set between the pilot signal and the resources corresponding to the data. Of course, a guard resource unit can also be set.

[0186] The number of protection resource units is not limited to that shown in FIG4A and can be determined as needed, for example, by an instruction from a network device, for example, based on a protocol agreement. As shown in FIG4B , the pilot signal and some protection resource units can be used for channel estimation. For example, when the network device indicates the protection resource unit, the number of protection information units in the delay domain direction can be indicated separately. τ , and the number of protection information units k in the Doppler domain direction v , wherein, for example, in the embodiment shown in FIG. 4A , l τ and k v Both are equal to 2.

[0187] Based on the above analysis, network devices send pilot signals to terminals in the Delay-Doppler mode. Guard resource units (GRUs) are required around the pilot signals. The more pilot signals there are in an OTFS frame, the more GRUs there are. This reduces the resources available for data transmission in the OTFS frame, affecting resource utilization.

[0188] In a first aspect, embodiments of the present disclosure provide a location indication method. Figure 5 is a schematic flow chart illustrating a location indication method according to an embodiment of the present disclosure. The location indication method illustrated in this embodiment may be executed by a first terminal.

[0189] As shown in FIG5 , the position indication method may include the following steps:

[0190] In step S501, indication information sent by a network device is received, wherein the indication information is used by a first terminal to determine a position of a pilot signal in a delay-Doppler domain.

[0191] It should be noted that the embodiment shown in FIG. 5 can be implemented independently or in combination with at least one other embodiment in the present disclosure. Specifically, it can be selected as needed, and the present disclosure does not limit it.

[0192] In some embodiments, the terminal can receive indication information sent by the network device, and the terminal can determine the position of the pilot signal in the delay-Doppler domain based on the indication information. For example, the delay-Doppler domain includes an OTFS frame, and the terminal can determine the resource unit corresponding to the pilot signal in the OTFS frame based on the indication information.

[0193] Since the number of protection resource units around the pilot signal will be different when the pilot signal is in different positions in the delay-Doppler domain, according to an embodiment of the present disclosure, the terminal can determine the position of the pilot signal in the delay-Doppler domain based on the indication information sent by the network device, which makes it easier for the network device to determine that the pilot signal is in different positions in the delay-Doppler domain when the number of protection resource units is relatively small, and instruct the terminal through the indication information, so that the terminal can receive and send data in the delay-Doppler domain when the number of protection resource units is relatively small, which is conducive to improving resource utilization.

[0194] In some embodiments, the delay-Doppler domain includes orthogonal time-frequency space (OTFS) frames, which are used to transmit physical shared channels and pilot signals. For example, an OTFS frame may include M×N resource units, as shown in Figures 4A and 4B , where M corresponds to M resource units in the delay domain and N corresponds to N resource units in the Doppler domain, where M and N are integers greater than 1.

[0195] In some embodiments, the physical shared channel includes at least one of the following:

[0196] Physical Uplink Share Channel (PUSCH);

[0197] Physical Downlink Share Channel (PDSCH).

[0198] In some embodiments, a guard resource unit may be set around the pilot signal, and resources corresponding to the guard resource unit are neither used for sending PUSCH nor for receiving PDSCH.

[0199] In some embodiments, the indication information is used to indicate at least one of the following:

[0200] The coordinates of the position in the delay-Doppler domain;

[0201] The type of position in the delay-Doppler domain.

[0202] For example, the indication information may indicate the coordinates (k p ,l p ), where k p represents the position in the Doppler domain, l p Indicates the position in the delay domain. The terminal can directly determine the position of the pilot signal in the delay-Doppler domain based on the coordinates.

[0203] In some embodiments, the location indication method further includes: determining the location corresponding to the type indicated by the indication information according to the association relationship between the type and the location.

[0204] For example, the indication information may indicate the type of the position of the pilot signal in the delay-Doppler domain, and there may be an association between the type and the position, for example, the type may be associated with the coordinates of the position in the delay-Doppler domain, wherein the association may be predetermined, for example, may be indicated by a network device, or may be determined based on a protocol agreement, and the present disclosure does not limit this. After the terminal determines the type of the position in the delay-Doppler domain according to the indication information, it may further determine the position of the type indicated by the indication information in the delay-Doppler domain according to the association between the type and the position, for example, when sending a PUSCH to the network device, the pilot signal may be sent at the determined position, for example, when receiving a PDSCH sent by the network device, the pilot signal may be received according to the determined position.

[0205] Since the types include only a limited number, such as the three types shown in the subsequent embodiments, and the types of coordinates are much more than the types of types, the amount of data required to indicate the type is less than that of indicating the coordinates, which is beneficial to saving the overhead of the network device sending indication information to the terminal.

[0206] In some embodiments, the relative position of the protection resource unit and the pilot signal is predetermined, for example, it can be indicated by a network device or determined based on a protocol agreement. For example, the resources corresponding to the protection resource unit in the delay-Doppler domain can include resource units adjacent to the pilot signal. In some embodiments, it can also include a circle of resource units surrounding the resource units adjacent to the pilot signal. Of course, the resources corresponding to the protection resource unit in the delay-Doppler domain are not limited to this.

[0207] In some embodiments, although the relative positions of the protection resource units and the pilot signal are predetermined, the number of protection resource units may vary as the position of the pilot signal changes. Subsequent embodiments provide an exemplary illustration of how the number of protection resource units varies as the position of the pilot signal changes when the OTFS frame transmits different data.

[0208] In some embodiments, the OTFS frame is used to transmit the physical shared channel of the first terminal.

[0209] For example, the OTFS frame may be used to transmit a physical shared channel of a terminal (eg, referred to as a first terminal), where the physical shared channel may be a PDSCH or a PUSCH.

[0210] In some embodiments, the resources of the physical shared channel are less than or equal to the total resources of the OTFS frame.

[0211] Since the OTFS frame contains relatively more resource units, for a single terminal, the data to be transmitted may not occupy the entire OTFS. Therefore, in some embodiments, the OTFS frame can be used to transmit the PDSCH or PUSCH of the first terminal, but the resources of the PDSCH or PUSCH may be less than the total resources of the OTFS frame.

[0212] Of course, the embodiments of the present disclosure are not limited thereto. In some embodiments, the resources used to transmit the PDSCH or PUSCH in the OTFS frame may be equal to all the resources of the OTFS frame.

[0213] The following embodiments mainly illustrate the technical solution of the present disclosure in a case where the resources used to transmit PDSCH or PUSCH in an OTFS frame are less than the total resources of the OTFS frame.

[0214] In some embodiments, the type includes at least one of the following:

[0215] The pilot signal is located at the edge of the physical shared channel resources;

[0216] The pilot signal is located at an intersection of the edge of the physical shared channel resource;

[0217] The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

[0218] 6A to 6C are schematic diagrams showing the positions of pilot signals according to an embodiment of the present disclosure.

[0219] As shown in Figure 6A , the pilot signal can be located within the resources of the physical shared channel, but not at the edge of the physical shared channel resources (e.g., type A1). In this case, because the four directions of the pilot signal (upper, lower, left, and right) are all resource units used for data transmission, guard resource units (GRUs) are required on the upper, lower, left, and right sides of the pilot signal, and the number of GRUs is 24. It can be seen that in this case, the relative position of the GRUs and the pilot signal is that the GRUs are located on the upper, lower, left, and right sides of the pilot signal.

[0220] As shown in Figure 6B , the pilot signal can be located at the edge of the physical shared channel resources (e.g., type A2), for example, at the left edge of the physical shared channel resources. In this case, because the pilot signal only needs to transmit data in the upper, lower, and right directions, guard resource units are set up on the upper, lower, and right sides of the pilot signal. However, no guard resource units are required on the left side of the pilot signal, resulting in a total of 14 guard resource units. Therefore, in this case, the relative positions of the guard resource units and the pilot signal are such that the guard resource units are set up on the upper, lower, and right sides of the pilot signal.

[0221] As shown in Figure 6C , the pilot signal can be located at a focal point on the edge of the physical shared channel resource (e.g., type A3), for example, at the intersection of the left and bottom edges of the physical shared channel resource. In this case, since the pilot signal only requires data transmission in the upper and right directions, guard resource units are set above and to the right of the pilot signal. However, guard resource units are not required on the left and bottom sides of the pilot signal, resulting in a total of nine guard resource units. Therefore, in this case, the relative position of the guard resource units to the pilot signal is such that the guard resource units are set above and to the right of the pilot signal.

[0222] According to the embodiments shown in FIG. 6A to FIG. 6C , when the position type of the pilot signal in the delay-Doppler domain is A3, the number of protection resource units is the smallest, and correspondingly, the resource utilization of data transmission (physical shared channel) is the highest.

[0223] Therefore, in some embodiments, when a network device sends a PDSCH to a terminal in an OTFS frame, or receives a PUSCH sent by a terminal in an OTFS frame, it may indicate that the type of the pilot signal location in the OTFS frame is A3. Based on the type indicated by the network device, the terminal may determine that the pilot signal is located at the intersection of the left and lower edges of the physical shared channel resources, and further determine to set protection resource units above and to the right of the pilot signal. Based on this, the terminal may determine the resources occupied by the pilot signal and the protection resource unit in the physical shared channel resources, and may then perform physical shared channel transmission with the network device using resources other than the pilot signal and the protection resource unit in the physical shared channel resources.

[0224] It should be noted that the types shown in the embodiments of the present disclosure are only some examples used to illustrate the technical solutions of the present disclosure, and do not represent all types in the technical solutions of the present disclosure.

[0225] In some embodiments, the network device may indicate the number of protection resource units based on the terminal granularity and / or based on the physical shared channel (such as PDSCH or PUSCH) granularity, for example, indicating the number of protection resource units in the delay domain direction. τ , and the number of guard resource units k in the Doppler domain direction v For example, network equipment indicates to different terminals τ They can be equal or unequal. The network device indicates k to different terminals. v They can be equal or unequal.

[0226] In order to simplify the description logic, the following mainly focuses on the l τ Equal, indicating k for different terminals v Equal, and l τ and k v When both are equal to 2, the technical solution of the present disclosure is exemplarily described.

[0227] In some embodiments, the OTFS frame is used to transmit a first physical downlink shared channel (PDSCH) of a first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

[0228] In some embodiments, the first PDSCH and the second PDSCH share a pilot signal.

[0229] In some embodiments, the network device may send the PDSCH to the terminal in an OTFS frame, and may also send the PDSCH to at least one second terminal other than the first terminal.

[0230] For example, take the example of a network device sending PDSCH to a first terminal and a second terminal in an OTFS frame. The channel of the first terminal is H1 (characterized as a channel matrix), the channel matrix of the second terminal is H2 (characterized as a channel matrix), and the OTFS frame used to transmit PDSCH is s. Then the signal received by the first terminal is Y1=H1*s+n1, and the signal received by the second terminal is Y2=H2*s+n2, where n1 and n2 are noise. It should be noted that the above formula for determining the signal received by the terminal is only for exemplary description, but is not limited to the above formula. For example, in some other embodiments, the multiplication relationship between the channel matrix and s can be adjusted in the formula.

[0231] Since the channel through which all data in s passes is the same, for the first terminal, all data passes through channel H1, and for the second terminal, all data passes through channel H2, and the first terminal and the second terminal receive signals independently, the two terminals can perform channel estimation based on the pilot signal respectively. Therefore, when the network device sends PDSCH to different terminals in the OTFS frame, the different terminals can share the same pilot signal for channel estimation. For example, the first terminal performs channel estimation based on the pilot signal to determine H1, and the second terminal performs channel estimation based on the pilot signal to determine H2.

[0232] In some embodiments, the relationship between the first PDSCH and the second PDSCH, and the relationship between each second PDSCH, satisfies at least one of the following:

[0233] The first interval in the delay domain is greater than or equal to the delay of the next PDSCH in the adjacent PDSCHs in the delay domain;

[0234] The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0235] Since different PDSCHs are sent by network devices to different terminals, in order to avoid interference between PDSCHs, when the network device sends PDSCHs to different terminals in the delay-Doppler domain, the PDSCHs sent to different terminals can have a certain interval in the delay domain and the Doppler domain respectively.

[0236] In the delay domain, if the interval between two adjacent PDSCHs (e.g., called the first interval) is relatively small, the first of the two PDSCHs will interfere with the second. Therefore, it is necessary to ensure that the first interval is relatively large. For example, the first interval can be determined based on the delay of the second of the adjacent PDSCHs. The first interval can be greater than or equal to the delay of the second of the adjacent PDSCHs in the delay domain. This helps to avoid the first of the two PDSCHs from interfering with the second.

[0237] In the Doppler domain, if the interval between two adjacent PDSCHs (for example, called the second interval) is relatively small, interference will occur between the two PDSCHs. Therefore, it is necessary to ensure that the second interval is relatively large. For example, the second interval can be determined based on the maximum Doppler shift of the adjacent PDSCHs. Since the frequency deviation of the PDSCH in the Doppler domain can be positive or negative, the second interval can be set to be greater than or equal to twice the maximum Doppler shift of the adjacent PDSCHs in the Doppler domain. Accordingly, it is helpful to avoid that the first PDSCH of the two PDSCHs will interfere with the second PDSCH. Alternatively, in some embodiments, the Doppler domain interval can also be set to the sum of the Doppler shift of the first PDSCH and the Doppler shift of the second PDSCH.

[0238] In some embodiments, a first total of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

[0239] In some embodiments, the type includes at least one of the following:

[0240] The pilot signal is located at the edge of the first sum resource;

[0241] The pilot signal is located at an intersection of an edge of the first sum resource;

[0242] The pilot signal is located within the sum resource and is not located at the edge of the first sum resource.

[0243] 7A to 7C are schematic diagrams showing the positions of pilot signals according to an embodiment of the present disclosure.

[0244] Taking the OTFS frame used to transmit the PDSCH of 4 terminals as an example, in Figures 7A to 7C, the upper right PDSCH is PDSCH#1 of terminal #1, the upper left PDSCH is PDSCH#2 of terminal #2, the lower left PDSCH is PDSCH#3 of terminal #3, and the lower right PDSCH is PDSCH#4 of terminal #4.

[0245] Among them, PDSCH#2 and PDSCH#1 are two PDSCHs adjacent in the time domain, and the first interval between them can be determined based on the delay of PDSCH#1. For example, the determined first interval corresponds to one resource unit in the delay domain. PDSCH#3 and PDSCH#4 are two PDSCHs adjacent in the time domain, and the first interval between them can be determined based on the delay of PDSCH#4. For example, the determined first interval corresponds to one resource unit in the delay domain.

[0246] In the Doppler domain, PDSCH#2 is adjacent to PDSCH#3. For example, the maximum Doppler shift between PDSCH#2 and PDSCH#3 corresponds to two resource units in the Doppler domain, so the adjacent parts of PDSCH#2 and PDSCH#3 are two resource units apart in the Doppler domain; PDSCH#1 is partially adjacent to PDSCH#3. For example, the maximum Doppler shift between PDSCH#1 and PDSCH#3 corresponds to one resource unit in the Doppler domain, so the adjacent parts of PDSCH#1 and PDSCH#3 are two resource units apart in the Doppler domain; PDSCH#1 is partially adjacent to PDSCH#4. For example, the maximum Doppler shift between PDSCH#1 and PDSCH#4 corresponds to one resource unit in the Doppler domain, so the adjacent parts of PDSCH#1 and PDSCH#4 are two resource units apart in the Doppler domain.

[0247] As shown in FIG7A , the pilot signal can be located within the first summed resource, but not at the edge of the first summed resource (e.g., type B1). In this case, since data transmission is required in the four directions of the pilot signal (up, down, left, and right), guard resource units are required to be set on the upper, lower, left, and right sides of the pilot signal, and the number of guard resource units is 24. It can be seen that in this case, the relative position of the guard resource units and the pilot signal is that the guard resource units are set on the upper, lower, left, and right sides of the pilot signal.

[0248] As shown in FIG7B , the pilot signal can be located at the edge of the first summed resource (e.g., type B2), for example, at the left edge of the first summed resource. In this case, since the pilot signal only requires data transmission in the upper, lower, and right directions, guard resource units are set on the upper, lower, and right sides of the pilot signal. However, no guard resource unit is required on the left side of the pilot signal, resulting in a total of 14 guard resource units. Therefore, in this case, the relative positions of the guard resource units and the pilot signal are such that the guard resource units are set on the upper, lower, and right sides of the pilot signal.

[0249] As shown in FIG7C , the pilot signal can be located at the focal point of the edge of the first summed resource (e.g., type B3), for example, at the intersection of the left and bottom edges of the first summed resource. In this case, since the pilot signal only requires data transmission in the upper and right directions, guard resource units are set on the upper and right sides of the pilot signal, but not on the left and bottom sides of the pilot signal. The number of guard resource units is 9. It can be seen that in this case, the relative position of the guard resource units and the pilot signal is that the guard resource units are set on the upper and right sides of the pilot signal.

[0250] According to the embodiments shown in Figures 7A to 7C, although the number of protection resource units is the smallest when the type of the position of the pilot signal in the delay-Doppler domain is B3, when multiple PDSCHs are transmitted in the OTFS frame, there are intervals between the PDSCHs (for example, the first interval and the second interval), and the protection resource units can be located in the intervals. Therefore, for the above-mentioned three types B1, B2, and B3, the number of protection resource units is different, but the sum of the number of protection resource units and the number of resource units in the interval is the same (or approximately the same), so the resource utilization of the corresponding data transmission (for example, PDSCH) under the three types is the same.

[0251] In some embodiments, when a network device sends a PDSCH to multiple terminals (e.g., a first terminal and at least one second terminal) in an OTFS frame, it may indicate that the position of the pilot signal in the OTFS frame is one of B1, B2, and B3. Taking the indicated type of B1 as an example, the terminal may determine that the pilot signal is located at the intersection of the left edge and the lower edge of the first total resource based on the type indicated by the network device, and then determine to set the protection resource unit on the upper and right sides of the pilot signal. Based on this, the terminal may determine the resources occupied by the pilot signal and the pilot resource unit in the first total resource, and then may send the PDSCH to the network device through the resources other than the pilot signal and the pilot resource unit in the first total resource.

[0252] In some embodiments, the OTFS frame is used to transmit a first physical uplink shared channel PUSCH of a first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

[0253] In some embodiments, the network device may receive a PUSCH transmitted by a first terminal in an OTFS frame, and may also receive a PUSCH transmitted by at least one second terminal other than the first terminal. In this case, multiple terminals cannot share pilot signals, that is, the PUSCH of each terminal corresponds to its own pilot signal.

[0254] For example, take the case where a network device receives PUSCH sent by a first terminal and a second terminal in an OTFS frame. The channel of the first terminal is H1 (characterized as a channel matrix), the channel matrix of the second terminal is H2 (characterized as a channel matrix), and the OTFS frame used to transmit PUSCH is s. Then the signals of the two terminals received by the network device are Y=(H1*s+H2*s)+n. According to this formula, it can be seen that if the pilots of the two terminals are in the same position in the OTFS frame, the network device obtains H1+H2 for channel estimation, which cannot be used to determine the PUSCH of the two terminals, resulting in failure to demodulate smoothly. Therefore, in the scenario where the first terminal and at least one second terminal send PUSCH in the OTFS frame, different terminals cannot share pilot signals. It should be noted that the above formula for determining the signal received by the network device is only for exemplary description, but is not limited to the above formula. For example, in some other embodiments, the multiplication relationship between the channel matrix and s can be adjusted in the formula.

[0255] In some embodiments, the relationship between the first PUSCH and the second PUSCH, and the relationship between each second PUSCH, satisfies at least one of the following:

[0256] The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain;

[0257] The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0258] Since different PUSCHs are sent to the network device by different terminals, in order to avoid interference between PUSCHs, when different terminals send PUSCHs to the network device in the delay-Doppler domain, the PUSCHs sent by different terminals can have a certain interval in the delay domain and the Doppler domain respectively.

[0259] In the delay domain, if the interval between two adjacent PUSCHs (e.g., the third interval) is relatively small, the first of the two PUSCHs may interfere with the second. Therefore, it is necessary to ensure that the third interval is relatively large. For example, the third interval can be determined based on the delay of the second of the adjacent PUSCHs. The third interval can be greater than or equal to the delay of the second of the adjacent PUSCHs in the delay domain. This helps to prevent the first of the two PUSCHs from interfering with the second.

[0260] In the Doppler domain, if the interval between two adjacent PUSCHs (for example, called the fourth interval) is relatively small, interference will occur between the two PUSCHs. Therefore, it is necessary to ensure that the fourth interval is relatively large. For example, the fourth interval can be determined based on the maximum Doppler shift of the adjacent PUSCHs. Since the frequency offset of the PUSCH in the Doppler domain can be positive or negative, the fourth interval can be set to be greater than or equal to twice the maximum Doppler shift of the adjacent PUSCHs in the Doppler domain. Accordingly, it is helpful to avoid the first of the two PUSCHs from interfering with the second PUSCH. Alternatively, in some embodiments, the fourth interval can be set to be greater than or equal to the sum of the Doppler frequency offsets of the two adjacent PUSCHs.

[0261] In some embodiments, the second total resources of the first PUSCH, the second PUSCH, the third interval, and the fourth interval are less than the total resources of the OTFS frame.

[0262] In some embodiments, the type includes at least one of the following:

[0263] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain within the second total resource;

[0264] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain within the second total resource.

[0265] 8A to 8C are schematic diagrams showing the positions of pilot signals according to an embodiment of the present disclosure.

[0266] Taking three terminals (one first terminal and two second terminals) transmitting PUSCH in the OTFS frame as an example, in Figures 8A to 8C, the PUSCH on the upper left is PUSCH#1 of terminal #1, the PUSCH on the right is PUSCH#2 of terminal #2, and the PUSCH on the lower left is PUSCH#3 of terminal #3.

[0267] PUSCH#1 and PUSCH#2 are two adjacent PUSCHs in the time domain, and a first interval between them can be determined based on the delay of PUSCH#2. For example, the determined first interval corresponds to two resource units in the delay domain. PUSCH#3 and PUSCH#2 are two adjacent PUSCHs in the time domain, and a first interval between them can be determined based on the delay of PUSCH#2. For example, the determined first interval corresponds to one resource unit in the delay domain.

[0268] In the Doppler domain, PUSCH#1 is adjacent to PUSCH#3. For example, the maximum Doppler shift between PUSCH#1 and PUSCH#3 corresponds to two resource units in the Doppler domain. Then, the adjacent parts of PUSCH#2 and PUSCH#3 are two resource units apart in the Doppler domain. PUSCH#1 is partially adjacent to PUSCH#3. For example, the maximum Doppler shift between PUSCH#1 and PUSCH#3 corresponds to one resource unit in the Doppler domain. Then, the adjacent parts of PUSCH#1 and PUSCH#3 are two resource units apart in the Doppler domain.

[0269] Among them, the pilot signal of PUSCH#3 is located outside the resources corresponding to PUSCH#3. In some embodiments, it is not necessary to set a protection resource unit between the pilot signal of PUSCH#3 and the resources corresponding to the pilot signal domain, or a protection resource unit can be set.

[0270] As shown in Figure 8A , the pilot signals for PUSCH#1, PUSCH#2, and PUSCH#3 are arranged along the delay domain within the second sum resource (e.g., type C1), that is, arranged in the line direction in Figure 8A . In this case, adjacent pilot signals can share guard resource elements in the left and right directions. Compared to a case where pilot signals are scattered, the number of guard resource elements is relatively small.

[0271] As shown in Figure 8B , the pilot signals of PUSCH#1, PUSCH#2, and PUSCH#3 are arranged along the time-Doppler axis within the second summed resource (e.g., type C2), i.e., arranged in the column direction in Figure 8B . In this case, guard resource elements in the upward and downward directions can be shared between adjacent pilot signals, resulting in a relatively small number of guard resource elements compared to a case where pilot signals are scattered.

[0272] As shown in Figure 8C, the pilot signals of PUSCH#1, PUSCH#2, and PUSCH#3 are scattered within the second sum resource (e.g., type C3), meaning they are neither arranged along the delay domain nor along the time-Doppler distribution. In this case, the guard resource units between adjacent pilot signals are either unshared or shared only to a limited extent. Compared to types C1 and C2, the number of guard resource units is relatively large.

[0273] According to the embodiments shown in Figures 8A to 8C, when the position type of the pilot signal in the delay-Doppler domain is C1 or C2, the number of protection resource units is relatively small, and correspondingly, the resource utilization of data transmission (such as PUSCH) is the highest.

[0274] Therefore, in some embodiments, when the network device receives PUSCHs sent by multiple terminals in an OTFS frame, it can indicate that the position of the pilot signal in the OTFS frame is C1 or C2. Taking the indicated type of C1 as an example, the terminal can determine that the pilot signals of the PUSCHs of multiple terminals are arranged along the delay domain within the second total resource according to the type indicated by the network device, and the protection resource units of adjacent pilot signals can be shared in the delay domain direction. Based on this, multiple terminals can determine the resources occupied by the pilot signals and pilot resource units in the resources of the physical shared channel, and then perform physical shared channel transmission through the resources other than the pilot signals and pilot resource units in the resources of the physical shared channel, that is, multiple terminals send PUSCHs to the network device respectively.

[0275] In a second aspect, embodiments of the present disclosure provide a location indication method. Figure 9 is a schematic flow chart illustrating a location indication method according to an embodiment of the present disclosure. The location indication method illustrated in this embodiment can be executed by a network device.

[0276] As shown in FIG9 , the position indication method may include the following steps:

[0277] In step S901, indication information is sent to a first terminal, where the indication information is used by the first terminal to determine a position of a pilot signal in a delay-Doppler domain.

[0278] It should be noted that the embodiment shown in FIG. 9 can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed, and the present disclosure does not limit it.

[0279] In some embodiments, the network device can send indication information to the terminal. Through the indication information, the network device can indicate the position of the terminal pilot signal in the delay-Doppler domain. For example, the delay-Doppler domain includes an OTFS frame. The terminal can determine the resource unit corresponding to the pilot signal in the OTFS frame based on the indication information.

[0280] Since the number of protection resource units around the pilot signal will be different when the pilot signal is at different positions in the delay-Doppler domain, according to an embodiment of the present disclosure, the network device can instruct the terminal to determine the position of the pilot signal in the delay-Doppler domain through indication information, so that the network device can determine that the pilot signal is at different positions in the delay-Doppler domain when the number of protection resource units is relatively small, and instruct the terminal through indication information, so that the terminal can receive and send data in the delay-Doppler domain when the number of protection resource units is relatively small, which is conducive to improving resource utilization.

[0281] In some embodiments, the delay-Doppler domain includes orthogonal time-frequency space (OTFS) frames, which are used to transmit physical shared channels and pilot signals. For example, an OTFS frame may include M×N resource units, as shown in Figures 4A and 4B , where M corresponds to M resource units in the delay domain and N corresponds to N resource units in the Doppler domain, where M and N are integers greater than 1.

[0282] In some embodiments, the physical shared channel includes at least one of the following: a physical uplink shared channel; and a physical downlink shared channel.

[0283] In some embodiments, a guard resource unit may be set around the pilot signal, and resources corresponding to the guard resource unit are neither used for sending PUSCH nor for receiving PDSCH.

[0284] In some embodiments, the indication information is used to indicate at least one of the following:

[0285] The coordinates of the position in the delay-Doppler domain;

[0286] The type of position in the delay-Doppler domain.

[0287] For example, the indication information may indicate the coordinates (k p ,l p ), where k p represents the position in the Doppler domain, l p Indicates the position in the delay domain. The terminal can directly determine the position of the pilot signal in the delay-Doppler domain based on the coordinates.

[0288] In some embodiments, the information indication method further includes: determining the location corresponding to the type indicated by the indication information according to the association relationship between the type and the location.

[0289] For example, the indication information may indicate the type of the position of the pilot signal in the delay-Doppler domain, and there may be an association between the type and the position, for example, the type may be associated with the coordinates of the position in the delay-Doppler domain, wherein the association may be predetermined, for example, may be indicated by the network device, or may be determined based on a protocol agreement, and the present disclosure does not limit this. When the network device instructs the terminal to determine the type of position in the delay-Doppler domain through the indication information, it may also determine the position of the type indicated by the indication information in the delay-Doppler domain based on the association between the type and the position, for example, when receiving the PUSCH sent by the terminal, the pilot signal may be received at the determined position, for example, when sending the PDSCH to the terminal, the pilot signal may be sent according to the determined position.

[0290] Since the types include only a limited number, such as the three types shown in the subsequent embodiments, and the types of coordinates are much more than the types of types, the amount of data required to indicate the type is less than that of indicating the coordinates, which is beneficial to saving the overhead of the network device sending indication information to the terminal.

[0291] In some embodiments, the relative position of the protection resource unit and the pilot signal is predetermined, for example, it can be indicated by a network device or determined based on a protocol agreement. For example, the resources corresponding to the protection resource unit in the delay-Doppler domain can include resource units adjacent to the pilot signal. In some embodiments, it can also include a circle of resource units surrounding the resource units adjacent to the pilot signal. Of course, the resources corresponding to the protection resource unit in the delay-Doppler domain are not limited to this.

[0292] In some embodiments, although the relative positions of the protection resource units and the pilot signal are predetermined, the number of protection resource units may vary as the position of the pilot signal changes. Subsequent embodiments provide an exemplary illustration of how the number of protection resource units varies as the position of the pilot signal changes when the OTFS frame transmits different data.

[0293] In some embodiments, the OTFS frame is used to transmit the physical shared channel of the first terminal.

[0294] For example, the OTFS frame may be used to transmit a physical shared channel of a terminal (eg, referred to as a first terminal), where the physical shared channel may be a PDSCH or a PUSCH.

[0295] In some embodiments, the resources of the physical shared channel are less than or equal to the total resources of the OTFS frame.

[0296] Since the OTFS frame contains relatively more resource units, for a single terminal, the data to be transmitted may not occupy the entire OTFS. Therefore, in some embodiments, the OTFS frame can be used to transmit the PDSCH or PUSCH of the first terminal, but the resources of the PDSCH or PUSCH may be less than the total resources of the OTFS frame.

[0297] Of course, the embodiments of the present disclosure are not limited thereto. In some embodiments, the resources used to transmit the PDSCH or PUSCH in the OTFS frame may be equal to all the resources of the OTFS frame.

[0298] In some embodiments, the type includes at least one of the following:

[0299] The pilot signal is located at the edge of the physical shared channel resources;

[0300] The pilot signal is located at an intersection of the edge of the physical shared channel resource;

[0301] The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

[0302] As shown in Figure 6A , the pilot signal can be located within the resources of the physical shared channel, but not at the edge of the physical shared channel resources (e.g., type A1). In this case, since the four directions of the pilot signal (upper, lower, left, and right) are all resource units used for data transmission, guard resource units (GRUs) need to be set up on the upper, lower, left, and right sides of the pilot signal, and the number of GRUs is 24. It can be seen that in this case, the relative position of the GRUs and the pilot signal is that the GRUs are set up on the upper, lower, left, and right sides of the pilot signal.

[0303] As shown in Figure 6B , the pilot signal can be located at the edge of the physical shared channel resources (e.g., type A2), for example, at the left edge of the physical shared channel resources. In this case, because the pilot signal only needs to transmit data in the upper, lower, and right directions, guard resource units are set up on the upper, lower, and right sides of the pilot signal. However, no guard resource units are required on the left side of the pilot signal, resulting in a total of 14 guard resource units. Therefore, in this case, the relative positions of the guard resource units and the pilot signal are such that the guard resource units are set up on the upper, lower, and right sides of the pilot signal.

[0304] As shown in Figure 6C , the pilot signal can be located at a focal point on the edge of the physical shared channel resource (e.g., type A3), for example, at the intersection of the left and bottom edges of the physical shared channel resource. In this case, since the pilot signal only requires data transmission in the upper and right directions, guard resource units are set above and to the right of the pilot signal. However, guard resource units are not required on the left and bottom sides of the pilot signal, resulting in a total of nine guard resource units. Therefore, in this case, the relative position of the guard resource units to the pilot signal is such that the guard resource units are set above and to the right of the pilot signal.

[0305] According to the embodiments shown in FIG. 6A to FIG. 6C , when the position type of the pilot signal in the delay-Doppler domain is A3, the number of protection resource units is the smallest, and correspondingly, the resource utilization of data transmission (physical shared channel) is the highest.

[0306] Therefore, in some embodiments, when the network device sends a PDSCH to a terminal in an OTFS frame, or receives a PUSCH sent by a terminal in an OTFS frame, the type of the position of the pilot signal in the OTFS frame may be indicated as A3. Furthermore, based on the indicated type, the network device may determine that the pilot signal is located at the intersection of the left edge and the lower edge of the resources of the physical shared channel, and then determine to set the protection resource unit on the upper and right sides of the pilot signal. Accordingly, the network device may determine the resources occupied by the pilot signal and the protection resource unit in the resources of the physical shared channel, and then perform physical shared channel transmission with the terminal using the resources other than the pilot signal and the protection resource unit in the resources of the physical shared channel.

[0307] In some embodiments, the network device may indicate the number of protection resource units based on the terminal granularity and / or based on the physical shared channel (such as PDSCH or PUSCH) granularity, for example, indicating the number of protection resource units in the delay domain direction. τ , and the number of guard resource units k in the Doppler domain direction v For example, network equipment indicates to different terminals τ They can be equal or unequal. The network device indicates k to different terminals. v They can be equal or unequal.

[0308] In order to simplify the description logic, the following mainly focuses on the l τ Equal, indicating k for different terminals v Equal, and l τ and k v When both are equal to 2, the technical solution of the present disclosure is exemplarily described.

[0309] In some embodiments, the OTFS frame is used to transmit a first physical downlink shared channel (PDSCH) of a first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

[0310] In some embodiments, the first PDSCH and the second PDSCH share a pilot signal.

[0311] In some embodiments, the network device may send the PDSCH to the terminal in an OTFS frame, and may also send the PDSCH to at least one second terminal other than the first terminal.

[0312] For example, take the example of a network device sending PDSCH to a first terminal and a second terminal in an OTFS frame. The channel of the first terminal is H1 (characterized as a channel matrix), the channel matrix of the second terminal is H2 (characterized as a channel matrix), and the OTFS frame used to transmit PDSCH is s. Then the signal received by the first terminal is Y1=H1*s+n1, and the signal received by the second terminal is Y2=H2*s+n2, where n1 and n2 are noise. It should be noted that the above formula for determining the signal received by the terminal is only for exemplary description, but is not limited to the above formula. For example, in some other embodiments, the multiplication relationship between the channel matrix and s can be adjusted in the formula.

[0313] Since the channel through which all data in s passes is the same, for the first terminal, all data passes through channel H1, and for the second terminal, all data passes through channel H2, and the first terminal and the second terminal receive signals independently, the two terminals can perform channel estimation based on the pilot signal respectively. Therefore, when the network device sends PDSCH to different terminals in the OTFS frame, the different terminals can share the same pilot signal for channel estimation. For example, the first terminal performs channel estimation based on the pilot signal to determine H1, and the second terminal performs channel estimation based on the pilot signal to determine H2.

[0314] In some embodiments, the relationship between the first PDSCH and the second PDSCH, and the relationship between each second PDSCH, satisfies at least one of the following:

[0315] The first interval in the delay domain is greater than or equal to the delay of the next PDSCH in the adjacent PDSCHs in the delay domain;

[0316] The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0317] Since different PDSCHs are sent by network devices to different terminals, in order to avoid interference between PDSCHs, when the network device sends PDSCHs to different terminals in the delay-Doppler domain, the PDSCHs sent to different terminals can have a certain interval in the delay domain and the Doppler domain respectively.

[0318] In the delay domain, if the interval between two adjacent PDSCHs (e.g., called the first interval) is relatively small, the first of the two PDSCHs will interfere with the second. Therefore, it is necessary to ensure that the first interval is relatively large. For example, the first interval can be determined based on the delay of the second of the adjacent PDSCHs. The first interval can be greater than or equal to the delay of the second of the adjacent PDSCHs in the delay domain. This helps to avoid the first of the two PDSCHs from interfering with the second.

[0319] In the Doppler domain, if the interval between two adjacent PDSCHs (for example, called the second interval) is relatively small, interference will occur between the two PDSCHs. Therefore, it is necessary to ensure that the second interval is relatively large. For example, the second interval can be determined based on the maximum Doppler shift of the adjacent PDSCHs. Since the frequency deviation of the PDSCH in the Doppler domain can be positive or negative, the second interval can be set to be greater than or equal to twice the maximum Doppler shift of the adjacent PDSCHs in the Doppler domain. Accordingly, it is helpful to avoid that the first PDSCH of the two PDSCHs will interfere with the second PDSCH. Alternatively, in some embodiments, the Doppler domain interval can also be set to the sum of the Doppler shift of the first PDSCH and the Doppler shift of the second PDSCH.

[0320] In some embodiments, a first total of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

[0321] In some embodiments, the type includes at least one of the following:

[0322] The pilot signal is located at the edge of the first sum resource;

[0323] The pilot signal is located at an intersection of an edge of the first sum resource;

[0324] The pilot signal is located within the sum resource and is not located at the edge of the first sum resource.

[0325] Taking the OTFS frame used to transmit the PDSCH of 4 terminals as an example, in Figures 7A to 7C, the upper right PDSCH is PDSCH#1 of terminal #1, the upper left PDSCH is PDSCH#2 of terminal #2, the lower left PDSCH is PDSCH#3 of terminal #3, and the lower right PDSCH is PDSCH#4 of terminal #4.

[0326] Among them, PDSCH#2 and PDSCH#1 are two PDSCHs adjacent in the time domain, and the first interval between them can be determined based on the delay of PDSCH#1. For example, the determined first interval corresponds to one resource unit in the delay domain. PDSCH#3 and PDSCH#4 are two PDSCHs adjacent in the time domain, and the first interval between them can be determined based on the delay of PDSCH#4. For example, the determined first interval corresponds to one resource unit in the delay domain.

[0327] In the Doppler domain, PDSCH#2 is adjacent to PDSCH#3. For example, the maximum Doppler shift between PDSCH#2 and PDSCH#3 corresponds to two resource units in the Doppler domain, so the adjacent parts of PDSCH#2 and PDSCH#3 are two resource units apart in the Doppler domain; PDSCH#1 is partially adjacent to PDSCH#3. For example, the maximum Doppler shift between PDSCH#1 and PDSCH#3 corresponds to one resource unit in the Doppler domain, so the adjacent parts of PDSCH#1 and PDSCH#3 are two resource units apart in the Doppler domain; PDSCH#1 is partially adjacent to PDSCH#4. For example, the maximum Doppler shift between PDSCH#1 and PDSCH#4 corresponds to one resource unit in the Doppler domain, so the adjacent parts of PDSCH#1 and PDSCH#4 are two resource units apart in the Doppler domain.

[0328] As shown in FIG7A , the pilot signal can be located within the first summed resource, but not at the edge of the first summed resource (e.g., type B1). In this case, since data transmission is required in the four directions of the pilot signal (up, down, left, and right), guard resource units are required to be set on the upper, lower, left, and right sides of the pilot signal, and the number of guard resource units is 24. It can be seen that in this case, the relative position of the guard resource units and the pilot signal is that the guard resource units are set on the upper, lower, left, and right sides of the pilot signal.

[0329] As shown in FIG7B , the pilot signal can be located at the edge of the first summed resource (e.g., type B2), for example, at the left edge of the first summed resource. In this case, since the pilot signal only requires data transmission in the upper, lower, and right directions, guard resource units are set on the upper, lower, and right sides of the pilot signal. However, no guard resource unit is required on the left side of the pilot signal, resulting in a total of 14 guard resource units. Therefore, in this case, the relative positions of the guard resource units and the pilot signal are such that the guard resource units are set on the upper, lower, and right sides of the pilot signal.

[0330] As shown in FIG7C , the pilot signal can be located at the focal point of the edge of the first summed resource (e.g., type B3), for example, at the intersection of the left and bottom edges of the first summed resource. In this case, since the pilot signal only requires data transmission in the upper and right directions, guard resource units are set on the upper and right sides of the pilot signal, but not on the left and bottom sides of the pilot signal. The number of guard resource units is 9. It can be seen that in this case, the relative position of the guard resource units and the pilot signal is that the guard resource units are set on the upper and right sides of the pilot signal.

[0331] According to the embodiments shown in Figures 7A to 7C, although the number of protection resource units is the smallest when the type of the position of the pilot signal in the delay-Doppler domain is B3, when multiple PDSCHs are transmitted in the OTFS frame, there are intervals between the PDSCHs (for example, the first interval and the second interval), and the protection resource units can be located in the intervals. Therefore, for the above-mentioned three types B1, B2, and B3, the number of protection resource units is different, but the sum of the number of protection resource units and the number of resource units in the interval is the same, so the resource utilization of the corresponding data transmission (for example, PDSCH) under the three types is the same.

[0332] In some embodiments, when a network device sends a PDSCH to multiple terminals (e.g., a first terminal and at least one second terminal) in an OTFS frame, it may indicate that the position of the pilot signal in the OTFS frame is one of B1, B2, and B3. Taking the indication type of B1 as an example, the network device may determine that the pilot signal is located at the intersection of the left edge and the lower edge of the first total resource based on the indication type, and then determine to set the protection resource unit on the upper side and the right side of the pilot signal. Based on this, the network device may determine the resources occupied by the pilot signal and the pilot resource unit in the first total resource, and then receive the PDSCH sent by the terminal through the resources other than the pilot signal and the pilot resource unit in the first total resource.

[0333] In some embodiments, the OTFS frame is used to transmit a first physical uplink shared channel PUSCH of a first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

[0334] For example, take the case where a network device receives PUSCH sent by a first terminal and a second terminal in an OTFS frame. The channel of the first terminal is H1 (characterized as a channel matrix), the channel matrix of the second terminal is H2 (characterized as a channel matrix), and the OTFS frame used to transmit PUSCH is s. Then the signals of the two terminals received by the network device are Y=(H1*s+H2*s)+n. According to this formula, it can be seen that if the pilots of the two terminals are in the same position in the OTFS frame, the network device obtains H1+H2 for channel estimation, which cannot be used to determine the PUSCH of the two terminals, resulting in failure to demodulate smoothly. Therefore, in the scenario where the first terminal and at least one second terminal send PUSCH in the OTFS frame, different terminals cannot share pilot signals. It should be noted that the above formula for determining the signal received by the network device is only for exemplary description, but is not limited to the above formula. For example, in some other embodiments, the multiplication relationship between the channel matrix and s can be adjusted in the formula.

[0335] In some embodiments, the relationship between the first PUSCH and the second PUSCH, and the relationship between each second PUSCH, satisfies at least one of the following:

[0336] The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain;

[0337] The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0338] Since different PUSCHs are sent by different terminals to a network device, in order to avoid interference between PUSCHs, when different terminals send PUSCHs to a network device in the delay-Doppler domain, the PUSCHs sent by different terminals may have a certain interval in the delay domain and the Doppler domain, respectively.

[0339] In the delay domain, if the interval between two adjacent PUSCHs (e.g., the third interval) is relatively small, the first of the two PUSCHs may interfere with the second. Therefore, it is necessary to ensure that the third interval is relatively large. For example, the third interval can be determined based on the delay of the second of the adjacent PUSCHs. The third interval can be greater than or equal to the delay of the second of the adjacent PUSCHs in the delay domain. This helps to prevent the first of the two PUSCHs from interfering with the second.

[0340] In the Doppler domain, if the interval between two adjacent PUSCHs (e.g., the fourth interval) is relatively small, interference will occur between the two PUSCHs. Therefore, it is necessary to ensure that the fourth interval is relatively large. For example, the fourth interval can be determined based on the maximum Doppler shift of adjacent PUSCHs. Since the frequency offset of PUSCHs in the Doppler domain can be positive or negative, the fourth interval can be set to be greater than or equal to twice the maximum Doppler shift of adjacent PUSCHs in the Doppler domain. This helps prevent the first of the two PUSCHs from interfering with the second.

[0341] In some embodiments, the second total resources of the first PUSCH, the second PUSCH, the third interval, and the fourth interval are less than the total resources of the OTFS frame.

[0342] In some embodiments, the type includes at least one of the following:

[0343] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain within the second total resource;

[0344] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain within the second total resource.

[0345] Taking three terminals (one first terminal and two second terminals) transmitting PUSCH in the OTFS frame as an example, in Figures 8A to 8C, the PUSCH on the upper left is PUSCH#1 of terminal #1, the PUSCH on the right is PUSCH#2 of terminal #2, and the PUSCH on the lower left is PUSCH#3 of terminal #3.

[0346] PUSCH#1 and PUSCH#2 are two adjacent PUSCHs in the time domain, and a first interval between them can be determined based on the delay of PUSCH#2. For example, the determined first interval corresponds to two resource units in the delay domain. PUSCH#3 and PUSCH#2 are two adjacent PUSCHs in the time domain, and a first interval between them can be determined based on the delay of PUSCH#2. For example, the determined first interval corresponds to one resource unit in the delay domain.

[0347] In the Doppler domain, PUSCH#1 is adjacent to PUSCH#3. For example, the maximum Doppler shift between PUSCH#1 and PUSCH#3 corresponds to two resource units in the Doppler domain. Then, the adjacent parts of PUSCH#2 and PUSCH#3 are two resource units apart in the Doppler domain. PUSCH#1 is partially adjacent to PUSCH#3. For example, the maximum Doppler shift between PUSCH#1 and PUSCH#3 corresponds to one resource unit in the Doppler domain. Then, the adjacent parts of PUSCH#1 and PUSCH#3 are two resource units apart in the Doppler domain.

[0348] Among them, the pilot signal of PUSCH#3 is located outside the resources corresponding to PUSCH#3. In some embodiments, it is not necessary to set a protection resource unit between the pilot signal of PUSCH#3 and the resources corresponding to the pilot signal domain, or a protection resource unit can be set.

[0349] As shown in Figure 8A , the pilot signals for PUSCH#1, PUSCH#2, and PUSCH#3 are arranged along the delay domain within the second sum resource (e.g., type C1), that is, arranged in the line direction in Figure 8A . In this case, adjacent pilot signals can share guard resource elements in the left and right directions. Compared to a case where pilot signals are scattered, the number of guard resource elements is relatively small.

[0350] As shown in Figure 8B , the pilot signals of PUSCH#1, PUSCH#2, and PUSCH#3 are arranged along the time-Doppler axis within the second summed resource (e.g., type C2), i.e., arranged in the column direction in Figure 8B . In this case, guard resource elements in the upward and downward directions can be shared between adjacent pilot signals, resulting in a relatively small number of guard resource elements compared to a case where pilot signals are scattered.

[0351] As shown in Figure 8C, the pilot signals of PUSCH#1, PUSCH#2, and PUSCH#3 are scattered within the second sum resource (e.g., type C3), meaning they are neither arranged along the delay domain nor along the time-Doppler distribution. In this case, the guard resource units between adjacent pilot signals are either unshared or shared only to a limited extent. Compared to types C1 and C2, the number of guard resource units is relatively large.

[0352] According to the embodiments shown in Figures 8A to 8C, when the position type of the pilot signal in the delay-Doppler domain is C1 or C2, the number of protection resource units is relatively small, and correspondingly, the resource utilization of data transmission (such as PUSCH) is the highest.

[0353] Therefore, in some embodiments, when the network device receives PUSCHs sent by multiple terminals in an OTFS frame, it can indicate that the position of the pilot signal in the OTFS frame is C1 or C2. Taking the indicated type as C1 as an example, the network device can determine, based on the indicated type, that the pilot signals of the PUSCHs of multiple terminals are arranged along the delay domain within the second sum resource, and that the protection resource units of adjacent pilot signals can be shared in the delay domain direction. Based on this, the network device can determine the resources occupied by the pilot signal and the pilot resource unit in the resources of the physical shared channel, and can then receive the PUSCHs sent by multiple terminals separately through the resources other than the pilot signal and the pilot resource unit in the resources of the physical shared channel.

[0354] 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.

[0355] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0356] It should be noted that for other contents involved in this embodiment, please refer to the description of the relevant contents in the previous embodiments, which will not be repeated here.

[0357] Corresponding to the aforementioned embodiments of the location indication method, the present disclosure also provides embodiments of a terminal and a network device.

[0358] FIG10 is a schematic block diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG10 , the terminal includes a receiving module 1001 and a processing module 1002 .

[0359] In some embodiments, the receiving module is configured to receive indication information sent by the network device, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0360] In some embodiments, the delay-Doppler domain includes an orthogonal time-frequency space (OTFS) frame, and the OTFS frame is used to transmit a physical shared channel and a pilot signal.

[0361] In some embodiments, the physical shared channel includes at least one of the following: a physical uplink shared channel; and a physical downlink shared channel.

[0362] In some embodiments, the indication information is used to indicate at least one of the following: coordinates of the position in the delay-Doppler domain; and a type of the position in the delay-Doppler domain.

[0363] In some embodiments, the processing module is configured to determine the location corresponding to the type indicated by the indication information according to the association relationship between the type and the location.

[0364] In some embodiments, the OTFS frame is used to transmit the physical shared channel of the first terminal.

[0365] In some embodiments, the resources of the physical shared channel are less than or equal to the total resources of the OTFS frame.

[0366] In some embodiments, the type includes at least one of the following:

[0367] The pilot signal is located at the edge of the physical shared channel resources;

[0368] The pilot signal is located at an intersection of the edge of the physical shared channel resource;

[0369] The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

[0370] In some embodiments, the OTFS frame is used to transmit a first physical downlink shared channel (PDSCH) of a first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

[0371] In some embodiments, the first PDSCH and the second PDSCH share a pilot signal.

[0372] In some embodiments, the relationship between the first PDSCH and the second PDSCH, and the relationship between each second PDSCH, satisfies at least one of the following:

[0373] The first interval in the delay domain is greater than or equal to the delay of the next PDSCH in the adjacent PDSCHs in the delay domain;

[0374] The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0375] In some embodiments, a first total of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

[0376] In some embodiments, the type includes at least one of the following:

[0377] The pilot signal is located at the edge of the first sum resource;

[0378] The pilot signal is located at an intersection of an edge of the first sum resource;

[0379] The pilot signal is located within the sum resource and is not located at the edge of the first sum resource.

[0380] In some embodiments, the OTFS frame is used to transmit a first physical uplink shared channel PUSCH of a first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

[0381] In some embodiments, the relationship between the first PUSCH and the second PUSCH, and the relationship between each second PUSCH, satisfies at least one of the following:

[0382] The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain;

[0383] The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0384] In some embodiments, the second total resources of the first PUSCH, the second PUSCH, the third interval, and the fourth interval are less than the total resources of the OTFS frame.

[0385] In some embodiments, the type includes at least one of the following:

[0386] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain within the second total resource;

[0387] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain within the second total resource.

[0388] It should be noted that the modules included in the terminal are not limited to the modules described in the above embodiments, and may also include other modules, such as a sending module, a storage module, etc., which is not limited by the present disclosure.

[0389] FIG11 is a schematic block diagram of a network device according to an embodiment of the present disclosure. As shown in FIG11 , the network device includes a sending module 1101 and a processing module 1102 .

[0390] In some embodiments, the sending module 1101 is configured to send indication information to the first terminal, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

[0391] In some embodiments, the delay-Doppler domain includes an orthogonal time-frequency space (OTFS) frame, and the OTFS frame is used to transmit a physical shared channel and the pilot signal.

[0392] In some embodiments, the physical shared channel includes at least one of the following:

[0393] Physical uplink shared channel;

[0394] Physical downlink shared channel.

[0395] In some embodiments, the indication information is used to indicate at least one of the following:

[0396] the coordinates of the position in the delay-Doppler domain;

[0397] The type of the position in the delay-Doppler domain.

[0398] In some embodiments, the processing module is configured to determine the location corresponding to the type indicated by the indication information according to the association relationship between the type and the location.

[0399] In some embodiments, the OTFS frame is used to transmit a physical shared channel of the first terminal.

[0400] In some embodiments, resources of the physical shared channel are less than or equal to all resources of the OTFS frame.

[0401] In some embodiments, the type includes at least one of the following:

[0402] The pilot signal is located at an edge of resources of the physical shared channel;

[0403] The pilot signal is located at an intersection of edges of resources of the physical shared channel;

[0404] The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

[0405] In some embodiments, the OTFS frame is used to transmit a first physical downlink shared channel (PDSCH) of the first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

[0406] In some embodiments, the first PDSCH and the second PDSCH share a pilot signal.

[0407] In some embodiments, the relationship between the first PDSCH and the second PDSCH, and the relationship between each of the second PDSCHs, satisfies at least one of the following:

[0408] The first interval in the delay domain is greater than or equal to the delay of the next PDSCH in the adjacent PDSCHs in the delay domain;

[0409] The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

[0410] In some embodiments, a first sum of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

[0411] In some embodiments, the type includes at least one of the following:

[0412] The pilot signal is located at the edge of the first total resource;

[0413] The pilot signal is located at an intersection of edges of the first total resource;

[0414] The pilot signal is located within the total resource and is not located at an edge of the first total resource.

[0415] In some embodiments, the OTFS frame is used to transmit a first physical uplink shared channel PUSCH of the first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

[0416] In some embodiments, the relationship between the first PUSCH and the second PUSCH, and the relationship between each of the second PUSCHs, satisfies at least one of the following:

[0417] The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain;

[0418] The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift of adjacent PDSCHs in the Doppler domain.

[0419] In some embodiments, a second total of resources of the first PUSCH, resources of the second PUSCH, the third interval, and the fourth interval is less than all resources of the OTFS frame.

[0420] In some embodiments, the type includes at least one of the following:

[0421] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain within the second total resource;

[0422] The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain within the second total resource.

[0423] It should be noted that the modules included in the network device are not limited to the modules described in the above embodiments, and may also include other modules, such as a receiving module, a storage module, etc., and this disclosure does not limit this.

[0424] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can be referred to the partial description of the method embodiment. The device embodiment described above is merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art can understand and implement it without paying any creative work.

[0425] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0426] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0427] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0428] Figure 12A is a schematic diagram of the structure of a communication device 12100 proposed in an embodiment of the present disclosure. Communication device 12100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user device, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 12100 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.

[0429] As shown in Figure 12A, the communication device 12100 includes one or more processors 12101. The processor 12101 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 12100 is used to perform any of the above methods. Optionally, one or more processors 12101 are used to call instructions to enable the communication device 12100 to perform any of the above methods.

[0430] In some embodiments, the communication device 12100 further includes one or more transceivers 12102. When the communication device 12100 includes one or more transceivers 12102, the transceiver 12102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, steps S201 and S202, but not limited thereto), and the processor 12101 performs at least one of the other steps (for example, steps S201 and S202, 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.

[0431] In some embodiments, the communication device 12100 further includes one or more memories 12103 for storing data. Alternatively, all or part of the memories 12103 may be located outside the communication device 12100. In alternative embodiments, the communication device 12100 may include one or more interface circuits 12104. Optionally, the interface circuits 12104 are connected to the memory 12102 and may be configured to receive data from the memory 12102 or other devices, or to send data to the memory 12102 or other devices. For example, the interface circuits 12104 may read data stored in the memory 12102 and send the data to the processor 12101.

[0432] The communication device 12100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 12100 described in the present disclosure is not limited thereto, and the structure of the communication device 12100 may not be limited by FIG. 12A. 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.

[0433] 12B is a schematic diagram of the structure of a chip 12200 according to an embodiment of the present disclosure. If the communication device 12100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 12200 shown in FIG12B , but the present disclosure is not limited thereto.

[0434] The chip 12200 includes one or more processors 12201. The chip 12200 is configured to execute any of the above methods.

[0435] In some embodiments, chip 12200 further includes one or more interface circuits 12202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 12200 further includes one or more memories 12203 for storing data. Alternatively, all or part of memory 12203 may be located external to chip 12200. Optionally, interface circuit 12202 is connected to memory 12203. Interface circuit 12202 may be configured to receive data from memory 12203 or other devices, or to send data to memory 12203 or other devices. For example, interface circuit 12202 may read data stored in memory 12203 and send the data to processor 12201.

[0436] In some embodiments, the interface circuit 12202 performs at least one of the communication steps (e.g., steps S201 and S202, but not limited thereto) of the aforementioned method. For example, the interface circuit 12202 performing the communication steps (e.g., steps S201 and S202) of the aforementioned method means that the interface circuit 12202 performs data exchange between the processor 12201, the chip 12200, the memory 12203, or the transceiver device. In some embodiments, the processor 12201 performs at least one of the other steps (e.g., steps S201 and S202, but not limited thereto).

[0437] 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.

[0438] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 12100, the communication device 12100 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.

[0439] The present disclosure also provides a program product, which, when executed by the communication device 12100, enables the communication device 12100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0440] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A position indication method, characterized in that: The method is performed by a first terminal and includes: Receive indication information sent by a network device, wherein the indication information is used by the first terminal to determine a position of a pilot signal in a delay-Doppler domain.

2. The method according to claim 1, characterized in that The delay-Doppler domain includes an orthogonal time-frequency space (OTFS) frame, and the OTFS frame is used to transmit a physical shared channel and the pilot signal.

3. The method according to claim 2, characterized in that The physical shared channel includes at least one of the following: Physical uplink shared channel; Physical downlink shared channel.

4. The method according to any one of claims 1 to 3, characterized in that The indication information is used to indicate at least one of the following: the coordinates of the position in the delay-Doppler domain; The type of the position in the delay-Doppler domain.

5. The method according to claim 4, characterized in that The method further comprises: According to the association between the type and the position, the position corresponding to the type indicated by the indication information is determined.

6. The method according to claim 5, characterized in that The OTFS frame is used to transmit the physical shared channel of the first terminal.

7. The method according to claim 6, characterized in that The resources of the physical shared channel are less than or equal to the total resources of the OTFS frame.

8. The method according to claim 6 or 7, characterized in that: The types include at least one of the following: The pilot signal is located at an edge of a resource of the physical shared channel; The pilot signal is located at an intersection of edges of resources of the physical shared channel; The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

9. The method according to claim 5, characterized in that The OTFS frame is used to transmit a first physical downlink shared channel PDSCH of the first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

10. The method according to claim 9, characterized in that The first PDSCH and the second PDSCH share a pilot signal.

11. The method according to claim 10, characterized in that The relationship between the first PDSCH and the second PDSCH, and the relationship between each of the second PDSCHs, satisfies at least one of the following: The first interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain; The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

12. The method according to claim 11, characterized in that A first sum of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

13. The method according to claim 11 or 12, characterized in that: The types include at least one of the following: The pilot signal is located at the edge of the first total resource; The pilot signal is located at an intersection of the edges of the first sum resource; The pilot signal is located within the sum resource and is not located at an edge of the first sum resource.

14. The method according to claim 5, characterized in that The OTFS frame is used to transmit a first physical uplink shared channel PUSCH of the first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

15. The method according to claim 14, characterized in that The relationship between the first PUSCH and the second PUSCH, and the relationship between each of the second PUSCHs, satisfies at least one of the following: The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain; The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

16. The method according to claim 15, characterized in that A second total resource of the resources of the first PUSCH, the resources of the second PUSCH, the third interval, and the fourth interval is smaller than all resources of the OTFS frame.

17. The method according to claim 15 or 16, characterized in that The types include at least one of the following: The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain in the second total resource; The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain in the second total resource.

18. A method for indicating a position, characterized in that: Executed by a network device, the method includes: Indication information is sent to the first terminal, wherein the indication information is used by the first terminal to determine a position of a pilot signal in a delay-Doppler domain.

19. The method according to claim 18, characterized in that The delay-Doppler domain includes an orthogonal time-frequency space (OTFS) frame, and the OTFS frame is used to transmit a physical shared channel and the pilot signal.

20. The method according to claim 19, characterized in that The physical shared channel includes at least one of the following: Physical uplink shared channel; Physical downlink shared channel.

21. The method according to any one of claims 18 to 20, characterized in that The indication information is used to indicate at least one of the following: the coordinates of the position in the delay-Doppler domain; The type of the position in the delay-Doppler domain.

22. The method according to claim 21, characterized in that The method further comprises: According to the association between the type and the position, the position corresponding to the type indicated by the indication information is determined.

23. The method according to claim 22, characterized in that The OTFS frame is used to transmit the physical shared channel of the first terminal.

24. The method according to claim 23, characterized in that The resources of the physical shared channel are less than or equal to the total resources of the OTFS frame.

25. The method according to claim 23 or 24, characterized in that The types include at least one of the following: The pilot signal is located at an edge of a resource of the physical shared channel; The pilot signal is located at an intersection of edges of resources of the physical shared channel; The pilot signal is located within the resources of the physical shared channel and is not located at the edge of the resources of the physical shared channel.

26. The method according to claim 22, characterized in that The OTFS frame is used to transmit a first physical downlink shared channel PDSCH of the first terminal and a second PDSCH sent to at least one second terminal other than the first terminal.

27. The method according to claim 26, characterized in that The first PDSCH and the second PDSCH share a pilot signal.

28. The method according to claim 27, characterized in that The relationship between the first PDSCH and the second PDSCH, and the relationship between each of the second PDSCHs, satisfies at least one of the following: The first interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain; The second interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

29. The method according to claim 28, characterized in that A first sum of resources of the first PDSCH, resources of the second PDSCH, the first interval, and the second interval is less than or equal to all resources of the OTFS frame.

30. The method according to claim 28 or 29, characterized in that The types include at least one of the following: The pilot signal is located at the edge of the first total resource; The pilot signal is located at an intersection of the edges of the first sum resource; The pilot signal is located within the sum resource and is not located at an edge of the first sum resource.

31. The method according to claim 22, characterized in that The OTFS frame is used to transmit a first physical uplink shared channel PUSCH of the first terminal and a first PUSCH sent to at least one second terminal other than the first terminal.

32. The method according to claim 31, characterized in that The relationship between the first PUSCH and the second PUSCH, and the relationship between each of the second PUSCHs, satisfies at least one of the following: The third interval in the delay domain is greater than or equal to the delay of a subsequent PDSCH in adjacent PDSCHs in the delay domain; The fourth interval in the Doppler domain is greater than or equal to twice the maximum Doppler frequency shift in adjacent PDSCHs in the Doppler domain.

33. The method according to claim 32, characterized in that A second total resource of the resources of the first PUSCH, the resources of the second PUSCH, the third interval, and the fourth interval is smaller than all resources of the OTFS frame.

34. The method according to claim 32 or 33, characterized in that The types include at least one of the following: The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the delay domain in the second total resource; The pilot signal of the first PUSCH and the pilot signal of the second PUSCH are arranged along the Doppler domain in the second total resource.

35. A position indicating device, characterized in that: The device comprises: The receiving module is configured to receive indication information sent by the network device, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

36. A position indicating device, characterized in that: The device comprises: The sending module is configured to send indication information to the first terminal, wherein the indication information is used by the first terminal to determine the position of the pilot signal in the delay-Doppler domain.

37. A position indication method, characterized in that: include: The network device sends instruction information to the terminal; The terminal determines the position of the pilot signal in the delay-Doppler domain according to the indication information.

38. A terminal, characterized in that: include: one or more processors; Wherein, the terminal is used to execute the position indication method according to any one of claims 1 to 17.

39. A network device, characterized in that: include: one or more processors; Wherein, the network device is used to execute the location indication method described in any one of claims 18 to 34.

40. A communication system, characterized in that: It comprises a terminal and a network device, wherein the terminal is configured to implement the position indication method described in any one of claims 1 to 17, and the network device is configured to implement the position indication method described in any one of claims 18 to 34.

41. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device executes the position indication method according to any one of claims 1 to 17 and / or the position indication method according to any one of claims 18 to 34.

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