TA compensation method and device and storage medium

Abstract

The invention relates to a TA compensation method and device and a storage medium, and the method comprises the steps: carrying out the TA compensation based on a first message, and enabling the first message to be used for indicating the position of network equipment. In the embodiment of the invention, the problem that the transfer equipment cannot realize TA compensation for the network equipment is solved, the transfer equipment in the embodiment of the invention realizes TA compensation through the position of the network equipment, the accuracy of information transmission between the transfer equipment and the network equipment is ensured, and the communication reliability is further ensured.

Description

TA compensation method, device and storage medium

[0001] This disclosure relates to the field of communication technology, and in particular to a method, apparatus and storage medium for TA (Timing Advance) compensation.

[0002] In non-terrestrial networks (NTNs), user equipment (UEs) can connect to terrestrial base stations via satellite. NTN payloads include transparent payloads and regenerative payloads. With transparent payloads, the satellite only amplifies and relays information; it does not have the ability to process data. Regenerative payloads are commonly seen in gNB onboard deployments, where the satellite has onboard information processing capabilities.

[0003] In the case of transparent load, system coverage can be improved by uploading to satellite or space via relay equipment (or relay equipment).

[0004]

[0005] The solution provided in this disclosure solves the problem that timing advance (TA) compensation for network devices cannot be achieved when a communication link is established between relay devices and ground network devices. In the embodiments of this disclosure, the relay device achieves TA compensation through the location of the network device, ensuring the accuracy of information transmission between the relay device and the network device, thereby ensuring communication reliability.

[0006] This disclosure presents a TA compensation method, apparatus, and storage medium.

[0007] According to a first aspect of the present disclosure, a TA compensation method is proposed, the method being performed by a relay device located on satellite equipment, the method comprising:

[0008] TA compensation is performed based on the first message, which indicates the location of the network device.

[0009] According to a second aspect of the present disclosure, a TA compensation method is proposed, the method being executed by a network device, the method comprising: sending a first message to a relay device, the first message indicating the location of the network device, the first message being used by the relay device to perform TA compensation.

[0010] According to a third aspect of the present disclosure, a TA compensation device is provided, comprising:

[0011] The processing module is used to perform TA compensation based on a first message, which indicates the location of the network device.

[0012] According to a fourth aspect of the present disclosure, a TA compensation device is provided, comprising: a transceiver module for sending a first message to a relay device, the first message indicating the location of the network device, and the first message being used by the relay device to perform TA compensation.

[0013] According to a fifth aspect of the present disclosure, a relay device is provided, comprising: one or more processors; wherein the processors are configured to perform any of the methods described in the first aspect.

[0014] According to a sixth aspect of the present disclosure, a network device is provided, comprising: one or more processors; and a transceiver, wherein the transceiver is configured to perform any of the methods described in the second aspect.

[0015] According to a seventh aspect of the present disclosure, a communication system is provided, comprising: a relay device and a network device, wherein the relay device is configured to implement the method described in the first aspect, and the network device is configured to implement the TA compensation method described in the second aspect.

[0016] According to an eighth aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed on a communication device, cause the communication device to perform the method as described in any one of the first or second aspects.

[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of this disclosure and form part of this disclosure, illustrate exemplary embodiments of this disclosure and, together with their descriptions, serve to explain the embodiments of this disclosure and do not constitute an improper limitation of the embodiments of this disclosure. In the drawings:

[0018] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0019] Figure 1B is a schematic diagram of the architecture of another communication system according to an embodiment of the present disclosure;

[0020] Figure 2 is an interactive schematic diagram of the TA compensation method according to an embodiment of the present disclosure;

[0021] Figure 3A is a schematic flowchart illustrating a TA compensation method according to an embodiment of the present disclosure;

[0022] Figure 3B is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure;

[0023] Figure 4 is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure;

[0024] Figure 5 is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure;

[0025] Figure 6 is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure;

[0026] Figure 7A is a schematic diagram of the TA compensation device proposed in an embodiment of this disclosure;

[0027] Figure 7B is a schematic diagram of the TA compensation device proposed in an embodiment of this disclosure;

[0028] Figure 8A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure;

[0029] Figure 8B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure.

[0030] This disclosure provides a TA compensation method, apparatus, and storage medium.

[0031] According to a first aspect of the present disclosure, a TA compensation method is proposed, the method being performed by a relay device located on satellite equipment, the method comprising:

[0032] TA compensation is performed based on the first message, which indicates the location of the network device.

[0033] In the above embodiments, the problem of TA compensation for network devices that cannot be achieved when a relay device establishes a communication link with a ground network device is solved. In the embodiments of this disclosure, the relay device achieves TA compensation through the location of the network device, ensuring the accuracy of information transmission between the relay device and the network device, thereby ensuring communication reliability.

[0034] In conjunction with some embodiments of the first aspect, in some embodiments, the TA compensation based on the first message includes:

[0035] Determine the first TA value based on the first message;

[0036] TA compensation is performed based on the first TA value.

[0037] In the above embodiments, TA compensation is performed using the TA determined by the first message to ensure the accuracy of TA compensation and thus ensure communication reliability.

[0038] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first TA value based on the first message includes:

[0039] Based on the ephemeris information and the first message, the second TA value is determined;

[0040] The first TA value is determined based on the second TA value.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, determining the second TA value based on ephemeris information and the first message includes:

[0042] The second TA value is determined based on the implementation method of the relay equipment, the ephemeris information, and the first message processing.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, determining the second TA value based on ephemeris information and the first message includes:

[0044] The round-trip distance between the relay device and the network device is determined based on the ephemeris information and the first message;

[0045] The second TA value is determined based on the round-trip distance and the speed of light.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, determining the second TA value based on ephemeris information and the first message includes:

[0047] The distance between the relay device and the network device is determined based on the ephemeris information and the first message;

[0048] The second TA value is determined based on a multiple of the ratio of the distance to the speed of light.

[0049] In the above embodiments, the first TA value for TA compensation is determined after the second TA value is determined, ensuring the accuracy of determining the first TA value and the accuracy of performing TA compensation.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first TA value based on the second TA value includes:

[0051] The first TA value is determined based on the second TA value, the third TA value, the fourth TA value, and the time unit. The third TA value is configured by the network device, and the fourth TA value is a time offset value.

[0052] In the above embodiments, the first TA value is determined by the TA value configured in the network device, the time offset value, and the second TA value, thereby ensuring the accuracy of the determined first TA value.

[0053] In conjunction with some embodiments of the first aspect, in some embodiments, the first message includes at least one of the following:

[0054] The location of the network device;

[0055] The location of the reference point.

[0056] In the above embodiments, the content of the first message is expanded to ensure the accuracy of the information included in the first message.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0058] Receive the first message sent by the network device or OAM (Operation Administration Maintenance).

[0059] In the above embodiments, the first message is sent by the network device or OAM to ensure the accuracy of the reported first message.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, the first message is sent by a network device, and receiving the first message sent by the network device or OAM includes:

[0061] The first message sent by the network device is received before random access.

[0062] In conjunction with some embodiments of the first aspect, in some embodiments, after performing TA compensation based on the first message, the method further includes:

[0063] Receive a second message, which is used to update the first message;

[0064] TA compensation is performed based on the second message.

[0065] In the above embodiments, updates are performed via a second message, and subsequent TA compensation is performed via the updated message to ensure the accuracy of TA compensation.

[0066] In conjunction with some embodiments of the first aspect, in some embodiments, receiving the first message sent by the network device or OAM includes:

[0067] After random access, receive the first message sent by the network device or the OAM.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, the network device transmits in at least one of the following ways:

[0069] Control message method;

[0070] Broadcast method.

[0071] In conjunction with some embodiments of the first aspect, in some embodiments, the TA compensation based on the first message includes:

[0072] Based on the first message, TA compensation is performed on the control link between the relay device and the network device.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the uplink channels on the control link that require TA compensation include at least one of the following:

[0074] PRACH (Physical Random Access Channel);

[0075] PUSCH (Physical Uplink Shared Channel) in the random access process;

[0076] PUCCH (Physical Uplink Control Channel);

[0077] PUSCH after random access.

[0078] In the above embodiments, compensation is performed on the control link between the relay device and the network device to ensure the reliability of information transmission in the control link between the relay device and the network device.

[0079] A second aspect of this disclosure provides a TA compensation method, the method being executed by a network device, the method comprising:

[0080] A first message is sent to the relay device, the first message indicating the location of the network device, and the first message is used by the relay device to perform TA compensation.

[0081] In conjunction with some embodiments of the second aspect, in some embodiments, the first message includes at least one of the following:

[0082] The location of the network device;

[0083] The location of the reference point.

[0084] In conjunction with some embodiments of the second aspect, in some embodiments, sending the first message to the relay device includes:

[0085] The first message is sent to the relay device before random access.

[0086] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0087] The second message is used to update the first message.

[0088] In conjunction with some embodiments of the second aspect, in some embodiments, sending the first message to the relay device includes:

[0089] The first message is sent to the relay device after random access.

[0090] In conjunction with some embodiments of the second aspect, in some embodiments, the network device transmits in at least one of the following ways:

[0091] Control message method;

[0092] Broadcast method.

[0093] Thirdly, embodiments of this disclosure provide a TA compensation device, which includes at least one of a transceiver module and a processing module; wherein the TA compensation device is used to perform an optional implementation of the first aspect.

[0094] Fourthly, embodiments of this disclosure provide a TA compensation device, which includes at least one of a transceiver module and a processing module; wherein the TA compensation device is used to perform an optional implementation of the second aspect.

[0095] Fifthly, embodiments of this disclosure provide a relay device, comprising: one or more processors; wherein the processors are configured to perform the method described in any one of the first aspects.

[0096] In a sixth aspect, embodiments of this disclosure provide a network device, including: one or more processors; and a transceiver, wherein the transceiver is configured to perform the method described in any one of the second aspects.

[0097] In a seventh aspect, embodiments of this disclosure provide a storage medium storing first information, which, when executed on a communication device, causes the communication device to perform the method as described in any one of the first or second aspects.

[0098] Eighthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in either the first or second aspect.

[0099] In a ninth aspect, embodiments of this disclosure provide a computer program that, when run on a communication device, causes the communication device to perform the method described in either the first or second aspect.

[0100] In a tenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in either the first or second aspect.

[0101] It is understood that the aforementioned terminals, network devices, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0102] This disclosure provides a time-compensation (TA) method, apparatus, and storage medium. In some embodiments, the terms TA compensation method, compensation method, time compensation method, etc., can be used interchangeably; the terms TA compensation apparatus, compensation apparatus, time compensation apparatus, etc., can be used interchangeably; and the terms information processing system, communication system, etc., can be used interchangeably.

[0103] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0104] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0105] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0106] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0107] In the embodiments of this disclosure, "multiple" refers to two or more.

[0108] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0109] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0110] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0111] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0112] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0113] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0114] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0115] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0116] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0117] In some embodiments, "network" can be interpreted as devices included in a network, such as network equipment, core network equipment, etc.

[0118] In some embodiments, "network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)," etc.

[0119] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (terminal)," "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.

[0120] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0121] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0122] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0123] As shown in Figure 1A, taking the NTN network as an example, the communication system 100 includes a relay device 102, a network device 103, a terminal 104, and a core network device 105 on the satellite device 101. Among them, the terminal 104 can connect to the network device 103 via satellite and can also connect to the core network device 105, thereby connecting to the public data network.

[0124] In some embodiments, the satellite may be a spaceborne plateform or a satellite base station.

[0125] In some embodiments, the relay device 102 on the satellite may refer to a network-controlled repeater (NCR), a reconfigurable intelligent surface (RIS), a terminal-like device, or a relay device, etc. Referring to the schematic diagram of the NCR in FIG1B, this embodiment of the present disclosure uses an NCR as an example for illustration. The NCR may include a mobile terminal unit (NCR-MT) and a forwarding unit (NCR-Fwd).

[0126] The link between satellite or relay equipment 102 and terminal 104 is either a service link or an access link. The link between satellite or relay equipment 102 and network equipment 103 includes a control link and a feeder link or backhaul link. For example, NCR-MT can receive control commands sent by network equipment 103 through the control link. These control commands can be used to control the behavior of NCR-Fwd, i.e., to control its behavior on the backhaul link and access link, such as beam direction indication, enabling and disabling forwarding, etc. Alternatively, control commands can be used to control the behavior of the satellite on the service link or access link. The access link can be used for communication between NCR-Fwd and terminal 104.

[0127] The feedback link can be understood as the optical fiber or cable in a terrestrial network (TN).

[0128] Among them, when the relay equipment 102, such as NCR, communicates with network equipment, it can use the Uu interface. The Uu interface is open, so the relay equipment 102, such as NCR, is launched into the satellite, which helps to decouple the satellite and the ground network equipment, so that the same satellite can serve different ground operators.

[0129] In some embodiments, the processing unit on satellite equipment 101 includes an RRU (Radio Remote Unit) or an AAU (Active Antenna Unit). Optionally, the interface between the BBU and RRU is a CPRI (Common Public Radio Interface), which is an internal network interface. Other interfaces may be used in the satellite equipment's network, but these are also internal interfaces; therefore, satellite equipment 101 and network equipment 103 are bound together and can be considered as a single unit. In some embodiments, the Uu port used by the NCR is open, which facilitates decoupling between the satellite and terrestrial network equipment. That is, the same satellite can serve different terrestrial operators.

[0130] In some embodiments, the relay device 102 is an NCR, RIS, or a terminal-like device, etc., and this disclosure does not limit this.

[0131] In some embodiments, terminal 104 includes, for example, at least one of the following: Internet of Things (IoT) devices, mobile phones, wearable devices, terminals, automobiles with communication capabilities, smart cars, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, and wireless terminal devices in smart homes, but is not limited thereto.

[0132] In some embodiments, network device 102 includes at least one of core network equipment, access network equipment, ground station, or ground base station. The network device may be, for example, a node or device that connects a terminal to a wireless network. The network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation evolved Node B (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul equipment, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0133] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0134] In some embodiments, a network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU, which is centrally controlled by the CU. However, this is not the only possibility.

[0135] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements 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), or a Next Generation Core (NGC).

[0136] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0137] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1A, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1A are illustrative. The communication system may include all or some of the main bodies in FIG1A, or it may include other main bodies outside of FIG1A. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0138] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other signal processing methods, and next-generation systems built upon them. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0139] Figure 2 is an interactive schematic diagram of a TA compensation method according to an embodiment of the present disclosure. As shown in Figure 2, the embodiments of the present disclosure relate to a signal processing method, which includes:

[0140] Step S2101: The network device sends the first message.

[0141] In some embodiments, the network device sends a first message to the relay device.

[0142] In some embodiments, a network device can be understood as at least one of the access network device, ground station, and ground base station in the above embodiments. In some embodiments, the embodiments of this disclosure are applied to an NTN system, or may also be applied to other systems, and the embodiments of this disclosure are not limited thereto.

[0143] In some embodiments, the first message is used to indicate the location of the network device. Alternatively, it can be understood as the first message indicating the location of the network device. It should be noted that the name of the first message is not limited in the embodiments of this disclosure; it may be, for example, location information, downlink information, or other information.

[0144] In some embodiments, the first message includes at least one of the following:

[0145] (1) Location of network devices.

[0146] In some embodiments, the location of the network device actually refers to a specific geographical location indicated by the network device. Optionally, the location of the network device may be a GPS location or other types of location, which is not limited in this disclosure.

[0147] (2) The location of the reference point.

[0148] In some embodiments, the location of the reference point can be understood as the virtual location of the network device. Alternatively, it can be understood as the hypothetical location of the network device.

[0149] In some embodiments, the location of the reference point refers to the location of the uplink time synchronization reference point.

[0150] The reference point location is also a specific geographical location indicated by the network device. Optionally, the location of the network device is a GPS (Global Positioning System) location or other types of location. This disclosure does not limit this.

[0151] In some embodiments, the network device sends the first message in at least one of the following ways:

[0152] (1) Control message method.

[0153] In some embodiments, the control message includes messages such as RRC (Radio Resource Control), MAC CE (Media Access Control Control Element), and DCI (Downlink control information). For example, the network device sends the first message via an RRC message. As another example, the network device sends the first message via a MAC CE message; this disclosure does not limit the scope of the embodiments.

[0154] (2) Broadcasting method.

[0155] In some embodiments, the network device sends the first message via broadcast. For example, the network device sends the first message by broadcasting MIB (Master Information Block) or SIB (System Information Block) information.

[0156] It should be noted that this embodiment is described using the example of a network device sending a first message. In another embodiment, the first message can also be sent by OAM.

[0157] It should be noted that this embodiment is illustrated using the example of a network device sending a first message. In another embodiment, the network device may send the first message under different circumstances.

[0158] Optionally, the relay device receives a first message sent by the network device before random access. In this embodiment of the disclosure, the network device sends a first message before random access, and the relay device can perform TA compensation based on the first message during random access to ensure the accuracy of random access information transmission. For example, the relay device receives the first message sent by the network device before random access, and performs TA compensation when sending PRACH.

[0159] It should be noted that after the relay device performs TA compensation based on the first message, it receives a second message, which is used to update the first message; the relay device then performs TA compensation based on the second message. In some embodiments, updating the first message can also be understood as updating the location of the network device, so that the relay device can perform TA compensation based on the updated network device. For example, during random access, when the location of the network device is updated, the relay device performs TA compensation for Msg3 of the PUSCH.

[0160] Optionally, the relay device receives the first message sent by the network device or OAM after random access. In this embodiment of the disclosure, after entering the connected state after random access, the relay device can also receive the location of the network device to perform TA compensation on the sent PUSCH or PUCCH based on the location of the network device.

[0161] Step S2102: The relay device receives the first message.

[0162] In some embodiments, the relay device receives a first message sent by the network device.

[0163] In step S2103, the relay device determines the first TA value based on the first message.

[0164] In some embodiments, the relay device determines a second TA value based on ephemeris information and a first message, and then determines a first TA value based on the second TA value. Optionally, the ephemeris information is used to indicate the position and / or velocity of the satellite equipment. In embodiments of this disclosure, the relay device determines the second TA value based on the position of the satellite equipment and the position of the network equipment, and then determines the first TA value based on the second TA value, after which TA compensation can be performed based on the first TA value.

[0165] Optionally, the relay device determines the round-trip distance between the relay device and the network device based on ephemeris information and the first message, and determines the second TA value based on the round-trip distance and the speed of light.

[0166] In some embodiments, the second TA value can also be understood as the round-trip time difference between the relay device and the network device. This disclosure does not limit the second TA value.

[0167] Among them, ephemeris information is used to indicate the location of satellite equipment, the first message is used to indicate the location of network equipment, and the relay equipment is located on satellite equipment. Therefore, the relay equipment can determine the round-trip distance between the relay equipment and the network equipment based on the location of satellite equipment and network equipment, and then determine the ratio of the round-trip distance to the speed of light as the second TA value.

[0168] Optionally, the relay device determines the distance between the relay device and the network device based on ephemeris information and the first message, and determines the second TA value based on a multiple of the ratio of distance to the speed of light. Optionally, this multiple can be 2 or other values, and this disclosure does not limit the specific values.

[0169] Among them, ephemeris information is used to indicate the location of satellite equipment, the first message is used to indicate the location of network equipment, and the relay equipment is located on satellite equipment. Therefore, the relay equipment can determine the one-way distance between the relay equipment and the network equipment based on the location of satellite equipment and the location of network equipment, and then determine the second TA value as twice the ratio of the one-way distance to the speed of light.

[0170] In some embodiments, the relay device determines the first TA value based on the second TA value, the third TA value, the fourth TA value, and the time unit. The third TA value is configured by the network device, and the fourth TA value is a time offset value. Optionally, the time offset value is a fixed value. Alternatively, it can be understood as a time length. Optionally, the time offset value can be defined with different values ​​in different communication scenarios, and this disclosure does not limit the time offset value. It should be noted that this disclosure does not limit the name of the time offset value, which may be, for example, a time adjustment value, a difference, etc. Optionally, the time unit is the minimum interval. Optionally, the time unit is in units of symbols or in units of time slots, and this disclosure does not limit this.

[0171] Optionally, the transfer equipment uses the following formula to determine the first TA value: T TA =(N TA +N TA，control +N TA，offset )×T c

[0172] Where, N TA，control N represents the second TA value. TA N represents the third TA value. TA,offset T represents the fourth TA value. c It is a time unit.

[0173] Optionally, the relay device determines the second TA value based on the ephemeris information and the first message processing according to its own implementation method. In this embodiment of the disclosure, the relay device itself is configured with its own implementation method, so the relay device can determine the second TA value based on its own implementation method. This embodiment of the disclosure does not limit the implementation method of the relay device.

[0174] It should be noted that the implementation of the relay device in this embodiment can be based on the round-trip distance or distance between the relay device and the network device to determine the second TA value, or other methods can be used to determine the second TA value. This embodiment does not limit the implementation of the relay device.

[0175] Step S2104: The transfer equipment performs TA compensation based on the first TA value.

[0176] In this embodiment of the disclosure, after the relay equipment determines the first TA value, it can perform TA compensation based on the first TA value.

[0177] It should be noted that this embodiment is described using steps S2103-S2104 as an example. In another embodiment, the relay device can also perform TA compensation directly based on the first message.

[0178] In some embodiments, the relay device performs TA compensation on the control link between the relay device and the network device based on the first message.

[0179] Optionally, the uplink channels on the control link that require TA compensation include at least one of the following:

[0180] PRACH;

[0181] PUSCH during random access;

[0182] PUCCH;

[0183] PUSCH after random access.

[0184] The following describes the solutions involved in the embodiments of this disclosure by way of example.

[0185] The first method involves the network device sending an SIB or MIB broadcast message containing its location information. A relay device located on the satellite equipment captures the SIB or MIB after multiple attempts and successfully decodes the network device's location information. Based on the satellite equipment's location and the network device's location, the relay device performs TA compensation for uplink transmissions such as Prach and Msg3 pusch during the random access process. After successful access by the relay device, the network device further configures its location information via UE-specific RRC. The relay device then performs TA compensation for subsequent uplink transmissions, such as PUCCH and PUSCH, based on the new network device location information.

[0186] The second method involves the network device sending SIB or MIB broadcast information. This broadcast information does not contain the network device's location information. The relay device located on the satellite equipment captures the SIB or MIB after multiple attempts and initiates random access. After the relay device successfully accesses the cell and completes authentication, the network device further configures its location information via UE-specific RRC. The relay device then performs TA compensation for uplink transmissions, such as PUCCH and PUSCH, based on this location information.

[0187] The third method involves network devices sending SIB or MIB broadcast messages. These broadcast messages do not contain the network device's location information. Relay devices on the satellite acquire the SIB or MIB after multiple attempts and initiate random access. After successfully accessing the cell and completing authentication, the relay device receives the network device's location information via OAM messages. Based on this location information, the relay device performs TA compensation on uplink transmissions such as PUCCH and PUSCH.

[0188] The signal processing method disclosed in this embodiment may include at least one of steps S2101 to S2104. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, step S2104 may be implemented as an independent embodiment, and at least one of steps S2101 to S2104 may be implemented as an independent embodiment, but is not limited thereto.

[0189] In some embodiments, at least one of steps S2101-S2104 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0190] In some embodiments, other optional implementations may be described before or after the specification corresponding to FIG2.

[0191] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0192] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink", as well as the terms "sidelink", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct link", "direct communication", and "direct link communication".

[0193] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0194] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0195] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0196] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0197] Figure 3A is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure, applied to a transfer device. As shown in Figure 3A, the present disclosure relates to a TA compensation method, which includes:

[0198] Step S3101: The relay device receives the first message.

[0199] The optional implementation of step S3101 can be found in the optional implementation of step S2102 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0200] In step S3102, the relay device determines the first TA value based on the first message.

[0201] The optional implementation of step S3102 can be found in the optional implementation of step S2103 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0202] Step S3103: The transfer equipment performs TA compensation based on the first TA value.

[0203] The optional implementation of step S3103 can be found in the optional implementation of step S2104 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0204] Figure 3B is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure, applied to a terminal. As shown in Figure 3B, this disclosure relates to a TA compensation method, which includes:

[0205] In step S3201, the relay equipment performs TA compensation based on the first message.

[0206] The optional implementation of step S3201 can be found in the optional implementation of steps S2103-S2104 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0207] Figure 4 is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure, applied to a network device. As shown in Figure 4, this embodiment of the present disclosure relates to a TA compensation method, which includes:

[0208] Step S4101: The network device sends the first message.

[0209] The optional implementation of step S4101 can be found in step S2101 of Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0210] Figure 5 is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure. As shown in Figure 5, the present disclosure relates to a TA compensation method, which includes:

[0211] Step S5101: The network device sends the first message.

[0212] The optional implementation of step S5101 can be found in step S2101 of Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0213] In step S5102, the relay equipment performs TA compensation based on the first message.

[0214] The optional implementation of step S5102 can be found in steps S2103-S2104 of Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0215] The TA compensation method disclosed in this embodiment may include at least one of steps S5101 to S5102. For example, step S5101 may be implemented as a separate embodiment, and step S5102 may be implemented as a separate embodiment, but is not limited thereto.

[0216] Figure 6 is a flowchart illustrating a TA compensation method according to an embodiment of the present disclosure. As shown in Figure 6, the present disclosure relates to a TA compensation method, which includes:

[0217] Step S6101: NCR compensates for the time offset between the satellite and the ground base station / ground station / reference point.

[0218] In some embodiments, the NCR is located on a satellite to perform ground-to-ground forwarding functions, establishing backhaul and control links with ground base stations and access links with ground UEs. For ground-based UEs, forwarding via the satellite-based NCR on the access and backhaul links follows the same process as in a transparent NTN architecture.

[0219] In some embodiments, NCR is compensated based on first information, which includes one of the following:

[0220] - Satellite ephemeris information.

[0221] - Location information of ground base stations / ground stations.

[0222] - Reference point location: Considering the privacy of ground base stations / ground stations, reference point can be used instead.

[0223] In some embodiments, the ephemeris information of the aforementioned satellite is assumed to be known by NCR, and the location information of the ground base station / ground station / reference point is obtained through base station indication or through OAM.

[0224] In one embodiment, the base station configures the location information of the ground base station / ground station / reference point to the NCR via RRC messages.

[0225] Preferably, the base station configures the RRC information only after the NCR accesses the network and passes authentication.

[0226] Preferably, the base station updates the location information of the ground base station / ground station / reference point via MAC CE or RRC.

[0227] In one embodiment, the base station broadcasts the location information of the ground base station / ground station / reference point via broadcast.

[0228] Preferably, the base station updates the location information of the ground base station / ground station / reference point via MAC CE or RRC.

[0229] In one embodiment, the NCR obtains the location of the ground base station / ground station / reference point through OAM messages.

[0230] Preferably, the OAM message is sent to the NCR only after the NCR has accessed the network.

[0231] In some embodiments, the base station sends SIB or MIB information, and the broadcast information includes the location information of the ground base station / ground station / reference point (hereinafter referred to as reference point location). The NCR-MT located on the satellite captures the SIB or MIB after multiple attempts and successfully decodes the location information of the reference point. It then performs TA compensation on uplink transmissions such as Prach and Pusch based on the satellite location and the ground location.

[0232] Optionally, the calculation of the uplink TA of NCR-MT includes at least N TA，control Its TA expression is T TA =(N TA +N TA，control +N TA，offset )×T c

[0233] N TA，control This represents the RTT between the onboard NCR-MT and the reference point, calculated automatically by the NCR based on satellite ephemeris information and the reference point's location.

[0234] N TA The value is 0 before initial access, and will be updated according to the TA command issued by the base station.

[0235] N TA,offset It is a fixed offset value, defined in the same way as in terrestrial communication networks.

[0236] T c It is the basic time unit in 5G NR, and its definition is the same as that in terrestrial communication networks.

[0237] In some embodiments, the base station transmits SIB or MIB information, which includes the location information of the ground base station / ground station / reference point (hereinafter referred to as the reference point location). The NCR-MT located on the satellite captures the SIB or MIB after multiple attempts and successfully decodes the reference point location information. Based on the satellite location and the ground location, it performs TA compensation for uplink transmissions such as Prach and Msg3 pusch during the random access process. After the NCR successfully accesses the cell, the base station further configures the location information of the ground base station / ground station / reference point through the UE-specific RRC. The NCR then performs TA compensation for subsequent uplink transmissions such as PUCCH and PUSCH based on the new location information.

[0238] In some embodiments, the base station sends SIB or MIB information. The broadcast information does not include the location information of the ground base station / ground station / reference point (hereinafter referred to as the reference point location). The NCR-MT located on the satellite captures the SIB or MIB after multiple attempts and initiates random access. After the NCR successfully accesses the cell and completes NCR authentication, the base station further configures the location information of the ground base station / ground station / reference point through UE-specific RRC. The NCR performs TA compensation for uplink transmissions, such as PUCCH and PUSCH, based on the location information.

[0239] In some embodiments, the base station sends SIB or MIB information. The broadcast information does not include the location information of the ground base station / ground station / reference point (hereinafter referred to as the reference point location). The NCR-MT located on the satellite captures the SIB or MIB after multiple attempts and initiates random access. After the NCR successfully accesses the cell and completes NCR authentication, it receives the location information of the ground base station / ground station / reference point through OAM messages. The NCR performs TA compensation on uplink transmissions, such as PUCCH and PUSCH, based on the location information.

[0240] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0241] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., a network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0242] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0243] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0244] Figure 7A is a schematic diagram of the TA compensation device proposed in an embodiment of this disclosure. As shown in Figure 7A, the TA compensation device 7100 may include at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the processing module 7102 is used to perform TA compensation based on a first message, wherein the first message is used to indicate the location of the network device. Optionally, the transceiver module 7101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal in any of the above methods, which will not be described in detail here.

[0245] Optionally, the processing module 7102 is used to perform at least one of the communication steps, such as the processing performed by the terminal in any of the above methods, which will not be described in detail here.

[0246] Figure 7B is a schematic diagram of the TA compensation device proposed in an embodiment of this disclosure. As shown in Figure 7B, the TA compensation device 7200 may include at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the transceiver module 7201 is used to send a first message to a relay device, the first message indicating the location of the network device, and the first message being used by the relay device to perform TA compensation. Optionally, the transceiver module 7201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the communication device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the communication device in any of the above methods, which will not be described in detail here.

[0247] Optionally, the processing module 7202 is used to perform at least one of the communication steps, such as the processing performed by the communication device in any of the above methods, which will not be described in detail here.

[0248] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0249] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0250] Figure 8A is a schematic diagram of the structure of the communication device 8100 proposed in an embodiment of this disclosure. The communication device 8100 can be a network device (e.g., a ground station, ground base station, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 8100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0251] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control signal processing devices (such as base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 8100 is used to execute any of the above methods.

[0252] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may also be located outside the communication device 8100.

[0253] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceivers 8103 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, S2103, S2104, but not limited thereto).

[0254] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0255] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0256] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in this disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0257] Figure 8B is a schematic diagram of the structure of chip 8200 according to an embodiment of this disclosure. For cases where the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of chip 8200 shown in Figure 8B, but it is not limited thereto.

[0258] Chip 8200 includes one or more processors 8201, which are used to perform any of the above methods.

[0259] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to memory 8203, and the interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201.

[0260] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8201 performs at least one of the other steps.

[0261] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0262] In some embodiments, chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memories 8203 may be located outside of chip 8200.

[0263] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 8100, cause the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0264] This disclosure also provides a program product that, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0265] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

A method for timed advance TA compensation, characterized in that, The method is performed by a relay device located on a satellite device, and the method includes: performing TA compensation based on a first message, the first message being used to indicate the location of the network device. The method according to claim 1, characterized in that, The step of performing TA compensation based on the first message includes: determining a first TA value based on the first message; and performing TA compensation based on the first TA value. The method according to claim 2, characterized in that, The step of determining the first TA value based on the first message includes: determining the second TA value based on ephemeris information and the first message; and determining the first TA value based on the second TA value. The method according to claim 3, characterized in that, Determining the second TA value based on ephemeris information and the first message includes: processing the ephemeris information and the first message based on the implementation method of the relay device to determine the second TA value. The method according to claim 3, characterized in that, Determining the second TA value based on ephemeris information and the first message includes: determining the round-trip distance between the relay device and the network device based on the ephemeris information and the first message; and determining the second TA value based on the round-trip distance and the speed of light. The method according to claim 3, characterized in that, Determining the second TA value based on ephemeris information and the first message includes: determining the distance between the relay device and the network device based on the ephemeris information and the first message; and determining the second TA value based on a multiple of the ratio of the distance to the speed of light. The method according to any one of claims 3 to 6, characterized in that, Determining the first TA value based on the second TA value includes: determining the first TA value based on the second TA value, the third TA value, the fourth TA value, and a time unit, wherein the third TA value is indicated by the network device, and the fourth TA value is a time offset value. The method according to claims 1 to 7, characterized in that, The first message includes at least one of the following: the location of the network device; the location of the reference point. The method according to any one of claims 1 to 8, characterized in that, The method further includes: receiving a first message sent by the network device or Operation, Management and Maintenance (OAM). The method according to claim 9, characterized in that, The method further includes: receiving a second message, the second message being used to update the first message; and determining a second TA value based on the second message. The method according to claim 9 or 10, characterized in that, The network device sends the first message in at least one of the following ways: control message method; broadcast method. The method according to any one of claims 1 to 11, characterized in that, The TA compensation based on the first message includes: performing TA compensation on the control link between the relay device and the network device based on the first message. The method according to claim 12, characterized in that, The uplink channels for TA compensation on the control link include at least one of the following: Physical Random Access Channel (PRACH); Physical Uplink Shared Channel (PUSCH) during random access; Physical Uplink Control Channel (PUCCH); and PUSCH after random access. A TA compensation method, characterized in that, The method is performed by a network device and includes: sending a first message to a relay device, the first message indicating the location of the network device, and the first message being used by the relay device to perform TA compensation. The method according to claim 14, characterized in that, The first message includes at least one of the following: the location of the network device; the location of the reference point. The method according to claim 14 or 15 is characterized in that, The method further includes sending a second message, the second message being used to update the first message. The method according to any one of claims 13 to 16, characterized in that, The network device sends messages in at least one of the following ways: control message method; broadcast method. A TA compensation device, characterized in that, The device is installed on a relay device located on a satellite device. The device includes a processing module for performing TA compensation based on a first message, wherein the first message indicates the location of the network device. A TA compensation device, characterized in that, The device is installed in a network device and includes a transceiver module for sending a first message to a relay device. The first message is used to indicate the location of the network device and is used by the relay device to perform TA compensation. A transfer device, characterized in that, The relay device includes: one or more processors; wherein the processors are used to execute the TA compensation method according to any one of claims 1 to 13. A network device, characterized in that, include: One or more processors; A transceiver; wherein the transceiver is used to perform the TA compensation method according to any one of claims 14 to 17. A storage medium, characterized in that, The storage medium stores instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 17. A program product, characterized in that, When the program product is executed by a communication device, the communication device performs the method as described in any one of claims 1 to 17.

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