Information processing methods, communication device, communication system, and storage medium

Abstract

Provided in the embodiments of the present disclosure are information processing methods, a communication device, a communication system, and a storage medium. A method comprises: a terminal monitors a first signal sent by a non-terrestrial (NTN) network device, the first signal being used for instructing the terminal to receive a downlink transmission. In the technical solution provided by the embodiments of the present disclosure, the terminal monitors the first signal sent by the NTN network device and determines whether there is a downlink transmission between the NTN network device and the terminal, so that when there is a downlink transmission, the terminal actively establishes a connection with the NTN network device to receive the downlink transmission in a timely manner, thereby improving the success rate of downlink transmissions.

Description

Information processing method, communication device, communication system and storage medium Technical Field

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

[0002] Non-Terrestrial Networks (NTN) is the fifth generation of mobile communications (5 th The NTN network is an important technology introduced by 5G (5th Generation) technology. It is a communication network that uses satellites or aerial vehicles to provide communication services to terminals based on the ground communication network.

[0003] In the NTN network, since the distance between the NTN network equipment and the terminal is relatively far, the attenuation of signal transmission is relatively large, which may affect the signal interaction between the NTN network equipment and the terminal.

[0004] Summary of the Invention

[0005] Embodiments of the present disclosure provide an information processing method, a communication device, a communication system, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided an information processing method, wherein the method includes:

[0007] The terminal monitors a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

[0008] According to a second aspect of an embodiment of the present disclosure, there is provided an information processing method, wherein the method includes:

[0009] The NTN network device sends a first signal; the first signal is used to instruct the terminal to receive downlink transmission.

[0010] According to a third aspect of an embodiment of the present disclosure, there is provided an information processing method, wherein the method includes:

[0011] The NTN network device sends a first signal;

[0012] The terminal monitors a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

[0013] According to a fourth aspect of an embodiment of the present disclosure, a terminal is provided, wherein the terminal includes:

[0014] The receiving module is configured to monitor a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

[0015] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, wherein the network device includes:

[0016] The sending module is configured to send a first signal; the first signal is used to instruct the terminal to receive downlink transmission.

[0017] According to the sixth aspect of an embodiment of the present disclosure, a communication system is provided, wherein the communication system includes a terminal and a network device, the terminal is configured to implement the information processing method provided by the first aspect, and the network device is configured to implement the information processing method provided by the second aspect.

[0018] According to a seventh aspect of an embodiment of the present disclosure, a communication device is provided, wherein the communication device includes:

[0019] one or more processors;

[0020] The processor is used to call instructions to enable the communication device to execute the information processing method provided by the first aspect or the second aspect.

[0021] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the information processing method provided by the first aspect or the second aspect.

[0022] The technical solution provided by the embodiments of the present disclosure determines whether there is downlink transmission between the NTN network device and the terminal by monitoring the first signal sent by the NTN network device by the terminal. In this way, when there is downlink transmission, the terminal actively establishes a connection with the NTN network device to receive the downlink transmission in a timely manner based on the established connection, thereby improving the success rate of the downlink transmission.

[0023] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0025] FIG1A is a schematic diagram showing an architecture of a communication system according to an exemplary embodiment;

[0026] FIG1B is a schematic diagram showing a scenario of uplink and downlink timing alignment at a base station side according to an exemplary embodiment;

[0027] FIG1C is a schematic diagram showing a scenario in which uplink and downlink timings on a base station side are not aligned according to an exemplary embodiment;

[0028] FIG2A is an interactive schematic diagram showing an information processing method according to an exemplary embodiment;

[0029] FIG2B is an interactive schematic diagram showing an information processing method according to an exemplary embodiment;

[0030] FIG3A is a schematic flow chart showing an information processing method according to an exemplary embodiment;

[0031] FIG3B is a schematic flow chart showing an information processing method according to an exemplary embodiment;

[0032] FIG3C is a schematic flow chart showing an information processing method according to an exemplary embodiment;

[0033] FIG4 is a flow chart showing an information processing method according to an exemplary embodiment;

[0034] FIG5 is an interactive schematic diagram showing an information processing method according to an exemplary embodiment;

[0035] FIG6A is a schematic diagram showing a scenario of satellite communication according to an exemplary embodiment;

[0036] FIG6B is a schematic diagram showing a warning signal detection scenario 1 according to an exemplary embodiment;

[0037] FIG6C is a second schematic diagram illustrating a warning signal detection scenario according to an exemplary embodiment;

[0038] FIG7A is a schematic structural diagram of a terminal according to an exemplary embodiment;

[0039] FIG7B is a schematic structural diagram of a network device according to an exemplary embodiment;

[0040] FIG8A is a schematic structural diagram of a communication device 8100 according to an exemplary embodiment;

[0041] FIG8B is a schematic structural diagram of a chip 8200 according to an exemplary embodiment. DETAILED DESCRIPTION

[0042] Embodiments of the present disclosure provide an information processing method, a communication device, a communication system, and a storage medium.

[0043] In a first aspect, an embodiment of the present disclosure provides an information processing method, wherein the method includes:

[0044] The terminal monitors a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

[0045] In the above embodiment, the terminal determines whether there is downlink transmission between the NTN network device and the terminal by monitoring the first signal sent by the NTN network device. In this way, if there is downlink transmission, the terminal actively establishes a connection with the NTN network device and receives the downlink transmission in a timely manner, thereby improving the success rate of the downlink transmission.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0047] When the first signal is monitored, the monitoring state of the terminal for receiving the downlink transmission is adjusted.

[0048] In the above embodiment, when the terminal monitors the first signal, the terminal may adjust the monitoring state of the terminal receiving downlink transmission, which may at least improve the channel condition of the terminal downlink transmission and increase the success rate of the downlink transmission.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, when monitoring the first signal, adjusting the monitoring state of the terminal for receiving the downlink transmission includes at least one of the following:

[0050] When the first signal is monitored, adjusting the position at which the terminal monitors downlink transmission;

[0051] When the first signal is monitored, antenna parameters for the terminal to monitor downlink transmission are adjusted.

[0052] In the above embodiment, when the terminal monitors the first signal, the terminal can adjust the position at which the terminal monitors the downlink transmission to change the network coverage of the NTN in the terminal's current environment, so as to successfully receive the downlink transmission; or, by adjusting the antenna parameters at which the terminal monitors the downlink transmission, the terminal's receiving performance can be improved, so as to successfully receive the downlink transmission and improve the success rate of the downlink transmission.

[0053] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal monitoring a first signal sent by a non-terrestrial NTN network device includes:

[0054] A first signal sent by a non-terrestrial NTN network device is monitored according to the first information.

[0055] In the above embodiment, the terminal may determine the detection method of the first signal according to the first information, and monitor the first signal sent by the NTN network device according to the detection method indicated by the first signal, so as to reduce the situation of missing the monitoring of the first signal.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, the method includes:

[0057] receiving the first information sent by the network device of the NTN; or determining the first information according to a predefined rule.

[0058] In the above embodiment, the first information may be pre-configured by the NTN network device and sent to the terminal; or the first information may be determined by the terminal according to a predefined rule, thereby increasing the flexibility of determining the first information.

[0059] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following:

[0060] Signal sequence information, used to determine a signal sequence corresponding to the first signal;

[0061] Resource information, used to indicate the transmission resource of the first signal.

[0062] In the above embodiment, the first information may include signal sequence information and / or resource information; wherein the resource information indicates the transmission resource of the first signal, so that the terminal searches for the first signal in the transmission resource indicated by the resource information to successfully monitor the first signal; the signal sequence information indicates the signal sequence corresponding to the first signal, so that the terminal determines whether the received signal is the first signal sent to itself according to the signal sequence indicated by the signal sequence information, thereby determining whether it needs to receive downlink transmission.

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

[0064] a root sequence identifier, used to indicate a root sequence of the first signal;

[0065] a cyclic shift parameter, used to indicate to perform cyclic shift on the root sequence;

[0066] A scrambling sequence identifier, used to identify a scrambling sequence used to scramble the first signal.

[0067] In the above embodiment, the signal sequence information may include a root sequence identifier, a cyclic shift parameter and / or a scrambling sequence identifier, so that the terminal can determine the signal sequence of the first signal, and thus when receiving a signal, it can determine whether the received signal is the first signal sent to itself, and thus determine whether it needs to receive downlink transmission.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, the resource information includes at least one of the following:

[0069] Period information, indicating a period for sending the first signal;

[0070] time domain offset information, indicating an offset of a time domain position of the first signal relative to a reference time domain position;

[0071] Frequency domain position information indicates the frequency domain position at which the first signal is sent.

[0072] In the above embodiment, by carrying period information, time domain offset information and / or frequency domain position information in the resource information, the terminal can determine the time and frequency domain position of the first signal, thereby searching for the first signal at the time and frequency domain position, thereby improving the search success rate of the first signal.

[0073] In combination with some embodiments of the first aspect, in some embodiments, the first signal is a physical layer signal.

[0074] In the above embodiment, the first signal may be a physical layer signal. The network device of the NTN sends the physical layer signal, which is easy to demodulate, so that the terminal can search for the first signal in a poor communication environment.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, the downlink transmission includes at least one of the following:

[0076] The paging message of the terminal; the downlink service data of the terminal.

[0077] In the above embodiment, the NTN network device may send a first signal to prompt the terminal to actively receive a paging message at a paging opportunity, thereby reducing the possibility of paging failure; or, the NTN network device may send a first signal to prompt the terminal to actively establish or restore a connection with the NTN network device to receive downlink service data.

[0078] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0079] Upon receiving the first signal, the terminal synchronizes with the network device of the NTN to receive the downlink transmission.

[0080] In the above embodiment, the terminal receives the first signal, indicating that there is downlink transmission between the NTN network device and the terminal. The terminal can synchronize with the NTN network device to successfully establish a connection between the terminal and the NTN network device to receive the downlink transmission.

[0081] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal synchronizes with the network device of the NTN, including at least one of the following:

[0082] The terminal is synchronized based on a reference signal sent by the network device of the NTN;

[0083] The terminal is synchronized based on the first signal.

[0084] In the above embodiment, after monitoring the first signal sent by the NTN network device, the terminal can start paging monitoring to obtain the reference signal sent by the NTN network device, and synchronize the terminal with the NTN network device based on the reference signal. Alternatively, the first signal itself can be used for synchronization. After monitoring the first signal, the terminal directly multiplexes the first signal to synchronize the terminal with the NTN network device without receiving the reference signal sent by the NTN network device, thereby improving the flexibility of synchronization.

[0085] In conjunction with some embodiments of the first aspect, in some embodiments, the reference signal includes at least one of the following:

[0086] Synchronization and system information block SSB;

[0087] Channel State Information-Reference Signal CSI-RS.

[0088] In the above embodiment, by limiting the reference signal to include synchronization and system information blocks SSB and / or channel state information-reference signals CSI-RS; the terminal that monitors the first signal can perform synchronization with the network equipment of the NTN by monitoring any of the above signals, receive downlink transmission, and improve synchronization flexibility.

[0089] In conjunction with some embodiments of the first aspect, in some embodiments, the first signal includes one of the following:

[0090] The first type of signal is for a single terminal;

[0091] The second type of signal is for a terminal group, wherein the terminal group includes one or more terminals;

[0092] The third type of signal is for all terminals in the cell.

[0093] In the above embodiment, the first signal may include a first type of signal for a single terminal, a second type of signal for a terminal group including at least one terminal, and a third type of signal for all terminals in the cell; the flexibility of the first signal is improved so that different types of first signals can be used according to different communication situations.

[0094] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0095] When the first signal is not detected, the current state of the terminal is maintained.

[0096] In the above embodiment, when the terminal does not monitor the first signal, it indicates that there is no downlink transmission between the NTN network device and the terminal, and the terminal can maintain the current state to save power.

[0097] In a second aspect, an embodiment of the present disclosure provides an information processing method, wherein the method includes:

[0098] The NTN network device sends a first signal; the first signal is used to instruct the terminal to receive downlink transmission.

[0099] In the above embodiment, the NTN network device may send a first signal to the terminal to prompt the terminal that there is a downlink transmission, so that when there is a downlink transmission, the terminal actively establishes a connection with the NTN network device and receives the downlink transmission in time, thereby improving the success rate of the downlink transmission.

[0100] In a third aspect, an embodiment of the present disclosure provides an information processing method, wherein the method includes:

[0101] The NTN network device sends a first signal;

[0102] The terminal monitors a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

[0103] In a fourth aspect, an embodiment of the present disclosure provides a terminal, wherein the terminal includes:

[0104] The receiving module is configured to monitor a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

[0105] In a fifth aspect, an embodiment of the present disclosure provides a network device, wherein the network device includes:

[0106] The sending module is configured to send a first signal; the first signal is used to instruct the terminal to receive downlink transmission.

[0107] In the sixth aspect, an embodiment of the present disclosure provides a communication system, wherein the communication system includes a terminal and a network device, the terminal is configured to implement the information processing method described in the optional implementation manner of the second aspect, and the network device is configured to implement the information processing method described in the optional implementation manner of the second aspect.

[0108] In a seventh aspect, an embodiment of the present disclosure provides a communication device, wherein the communication device includes:

[0109] one or more processors;

[0110] The processor is used to call instructions to enable the communication device to execute the information processing method described in the optional implementation manner of the first aspect or the second aspect.

[0111] In an eighth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when the instructions are executed on a communication device, enable the communication device to execute the information processing method described in the optional implementation of the first aspect or the second aspect.

[0112] In a ninth aspect, an embodiment of the present disclosure provides a program product, which, when executed by a communication device, enables the communication device to execute the information processing method described in the optional implementation manner of the first aspect or the second aspect.

[0113] In a tenth aspect, an embodiment of the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the information processing method described in the optional implementation of the first aspect or the second aspect.

[0114] It is understandable that the above-mentioned terminals, network devices, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods provided by the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0115] The embodiments of the present disclosure provide an information processing method, a communication device, a communication system, and a storage medium. In some embodiments, the terms information processing method, information indication method, information transmission method, etc. are interchangeable, and the terms communication system, information processing system, etc. are interchangeable.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0120] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0121] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0122] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "in one case A, in another case B," or "in one case A, in 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 same applies when there are more branches such as A, B, and C.

[0123] 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.

[0124] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0125] 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.

[0126] In some embodiments, terms such as "...", "determine...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0127] 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.

[0128] 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.

[0129] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0135] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0136] 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.

[0137] FIG1A is a schematic diagram showing the architecture of a communication system according to an exemplary embodiment.

[0138] As shown in FIG. 1A , a communication system 100 includes a terminal 101 and a network device 102 .

[0139] 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.

[0140] In some embodiments, the network device 102 includes an access network device and a core network device.

[0141] In some embodiments, the access network device may be, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0142] 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.

[0143] 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.

[0144] In some embodiments, a core network device may be a single device including one or more network elements, or may be multiple devices or a group of devices, each including one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0145] In some embodiments, the network element is, for example, an Access and Mobility Management Function (AMF).

[0146] In some embodiments, the network element is, for example, a Mobility Management Entity (MME).

[0147] In some embodiments, the network element is used for access and mobility management, such as registration management, connection management, and mobility management, etc., but the name is not limited thereto.

[0148] In some embodiments, the network element may be a network element independent of the core network device.

[0149] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0150] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0151] 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).

[0152] In some embodiments, the continuous emergence of new internet applications such as augmented reality (AR) / virtual reality (VR) and vehicle-to-vehicle communication has placed higher demands on wireless communication technology, driving the continuous evolution of wireless communication technology to meet these application needs. Currently, cellular mobile communication technology is in the process of evolving into a new generation of technology. A key feature of this new generation of technology is the flexible configuration that supports multiple service types. Different service types have different requirements for wireless communication technology. For example, the enhanced mobile broadband (eMBB) service type focuses on high bandwidth and high speed; the ultra-reliable low latency communication (URLLC) service type focuses on high reliability and low latency; and the massive machine type communication (mMTC) service type focuses on a large number of connections. Therefore, the next generation of wireless communication systems requires flexible and configurable designs to support the transmission of multiple service types.

[0153] In the study of wireless communication technology, satellite communication is considered an important aspect of future wireless communication technology development. Satellite communication refers to communication conducted by ground-based radio communication equipment using satellites as relays. Satellite communication systems consist of satellite and ground components. Satellite communication features include: a wide communication range; communication between any two points within the coverage area of ​​the satellite's radio waves; and low susceptibility to land-based disasters (high reliability). As a supplement to current ground-based cellular communication systems, satellite communication can provide the following benefits:

[0154] Extended coverage: For areas that are not covered by current cellular communication systems or are costly to cover, such as oceans, deserts, and remote mountainous areas, satellite communications can be used to solve communication problems.

[0155] Emergency communications: In extreme situations such as disasters such as earthquakes, when cellular communication infrastructure is unavailable, satellite communications can be used to quickly establish communication connections.

[0156] Provide industry applications: For example, for delay-sensitive services in long-distance transmission, satellite communications can be used to reduce the delay of service transmission.

[0157] It can be foreseen that in future wireless communication systems, satellite communication systems and terrestrial cellular communication systems will gradually achieve deep integration, truly realizing the intelligent connection of all things.

[0158] In some embodiments, in satellite communication systems, the long propagation distance leads to significant deviations in uplink and downlink timing. Terminals need to maintain uplink synchronization based on location measurements and some auxiliary information. As shown in Figures 1B and 1C, Figure 1B is a schematic diagram illustrating a scenario in which uplink and downlink timing are aligned on the base station side, according to an exemplary embodiment; Figure 1C is a schematic diagram illustrating a scenario in which uplink and downlink timing are misaligned on the base station side, according to an exemplary embodiment.

[0159] Terminals must maintain uplink and downlink synchronization. Downlink synchronization involves receiving downlink synchronization signals from the base station. After achieving downlink synchronization, terminals must perform uplink synchronization to ensure that all terminals' uplink signals arrive at the base station at the same time as the base station's uplink timing. The base station can determine the transmission delay between the terminal and the base station. For example, the base station can determine the transmission delay between the terminal and the base station by receiving the preamble sent by the terminal. The base station then sends a timing advance (TA) value to the terminal, and the terminal advances its uplink signal by this value to achieve uplink synchronization.

[0160] In satellite communications, data transmission takes a long time due to the long signal transmission distance between the transmitter and receiver. For uplink and downlink transmissions, some embodiments introduce a delay parameter to compensate for transmission delay. To determine this delay parameter, the terminal must report its location information.

[0161] In some embodiments, due to the long signal propagation distance between the satellite and the terminal, the attenuation of the signal transmission may be relatively large, and the information exchange between the terminal and the base station may be affected.

[0162] In some embodiments, uplink and downlink coverage enhancement may include:

[0163] For downlink coverage enhancement: the transmission mechanism of signals such as the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) is enhanced.

[0164] For uplink coverage enhancement: the transmission mechanism of signals such as the Physical Uplink Control Channel (PUCCH) and the Physical Uplink Shared Channel (PUSCH) is enhanced.

[0165] In some embodiments, the coverage enhancement mechanism has not yet completely solved the coverage problem in satellite communication scenarios. In some scenarios, the terminal may experience large signal fading, as shown in Tables 1 and 2. For example, under a 30-degree tilt angle, the terminal has a 10% probability of experiencing non-line-of-sight (NLOS) transmission in suburban or rural scenarios. In the case of NLOS, the terminal's signal fading (e.g., shadow fading and clutter loss) may be as high as 18 dB.

[0166] Table 1 Line-of-sight transmission probability

[0167] Table 2 Signal fading in suburban or rural areas

[0168] Among them, σ SF is shadow fading; CL is clutter loss.

[0169] In one implementation method, a signal sequence with better detection performance can be designed, such as a pre-paging signal or a pre-paging signal. When the terminal cannot maintain a wireless connection, it detects the pre-paging signal and performs related operations to improve channel conditions. However, it is not clear how the pre-paging signal should be designed.

[0170] FIG2A is an interactive diagram illustrating an information processing method according to an exemplary embodiment. As shown in FIG2A , the embodiment of the present disclosure relates to an information processing method for a communication system 100, the method comprising:

[0171] Step S2101: The NTN network device sends first information to the terminal.

[0172] In some embodiments, the terminal receives first information sent by a network device of the NTN.

[0173] In some embodiments, the network device may be a network device of a non-terrestrial network (NTN), such as a satellite or a drone.

[0174] It's important to note that NTN refers to non-terrestrial networks, including satellite communications. Satellite communications refers to communications conducted by terrestrial radio communication equipment using satellites as relay nodes. Satellite communication systems consist of satellite and terrestrial components.

[0175] In some embodiments, the terminal may be a terminal supporting an NTN network.

[0176] In some embodiments, the first information may be used to indicate a detection method of the first signal.

[0177] It is understandable that the NTN network device may send the first information to the terminal in advance, so that the terminal determines the detection method of the first signal according to the first information and monitors the first signal according to the detection method.

[0178] In some embodiments, the first information may be configuration information of the first signal.

[0179] In some embodiments, the first information may be carried in an RRC layer message.

[0180] In some embodiments, the first information includes at least one of the following:

[0181] Signal sequence information, used to determine a signal sequence corresponding to the first signal;

[0182] Resource information, used to indicate the transmission resource of the first signal.

[0183] It is worth noting that by carrying signal sequence information and / or resource information in the first information, the terminal can monitor the signal transmitted on the transmission resource indicated by the resource information; and determine whether the monitored signal is the first signal based on the signal sequence information.

[0184] In some embodiments, the signal sequence information includes at least one of the following: a root sequence identifier; a cyclic shift parameter; and a scrambling sequence identifier.

[0185] In some embodiments, the root sequence identifier is used to indicate a root sequence of the first signal.

[0186] In some embodiments, candidate sequences and sequence identifiers of the root sequence may be pre-configured for the terminal or agreed upon by a protocol, so the root sequence identifier may be carried in the first information to indicate the root sequence of the first signal.

[0187] The root sequence information may be used by the terminal to perform correlation demodulation on the first signal.

[0188] It should be noted that the signal sequence corresponding to the first signal may be directly generated from the root sequence corresponding to the root sequence identifier.

[0189] In some embodiments, the cyclic shift parameter is used to indicate to perform cyclic shift on the root sequence.

[0190] In some embodiments, the cyclic shift parameters may include: a cyclic shift direction and / or a cyclic shift step size.

[0191] In some embodiments, the cyclic shift direction may include: cyclic left shift and / or cyclic right shift.

[0192] In some embodiments, the cyclic shift step size may indicate the cyclic shift amount for each cyclic shift of the signal sequence.

[0193] In some embodiments, the signal sequence corresponding to the first signal may be a signal sequence obtained by cyclically shifting a root sequence of the first signal according to a cyclic shift parameter.

[0194] It is understandable that, at the transmitting end of the signal, the NTN network device may perform cyclic shift on the root sequence of the first signal according to the cyclic shift step size and the cyclic shift direction to obtain a cyclically shifted sequence.

[0195] In some embodiments, the scrambling sequence identifier is used to identify a scrambling sequence used to scramble the first signal.

[0196] In some embodiments, the signal sequence corresponding to the first signal may be a signal sequence obtained by scrambling a root sequence of the first signal using a scrambling sequence.

[0197] In some embodiments, the signal sequence corresponding to the first signal may be a signal sequence obtained by scrambling a cyclically shifted signal sequence using a scrambling sequence.

[0198] It is understood that at the signal transmitting end, the NTN network device may scramble the generated signal sequence according to the scrambling sequence indicated by the scrambling sequence identifier to improve the signal's anti-interference capability. At the signal receiving end, the terminal may descramble the received signal according to the scrambling sequence indicated by the scrambling sequence identifier to restore the signal sequence of the first signal.

[0199] It is worth noting that scrambling technology can also be used to distinguish terminals. It is understandable that if a terminal cannot successfully descramble the received signal according to the pre-configured scrambling sequence after receiving it, it means that the signal is not sent to the terminal by NTN network equipment.

[0200] At the signal transmitting end, the NTN network device can modulate the signal sequence of the first signal onto the carrier to obtain the first signal; at the signal receiving end, after the terminal receives the first signal, it can demodulate the first signal to obtain the signal sequence corresponding to the first signal, and then descramble and / or cyclically shift the signal sequence of the first signal to obtain the root sequence of the first signal.

[0201] In some embodiments, the resource information includes at least one of the following:

[0202] Cycle information;

[0203] Time domain offset information;

[0204] Frequency domain location information.

[0205] In some embodiments, the period information is used to indicate a period for sending the first signal.

[0206] In some embodiments, the transmission resource for the first signal may be a periodic resource configured by the NTN network device for the terminal. It should be noted that the NTN network device may configure a dedicated transmission resource for the first signal, and the NTN network device may periodically transmit the first signal on this transmission resource. When the NTN network device does not transmit the first signal, the transmission resource remains unoccupied.

[0207] In some embodiments, the transmission resource of the first signal may be a semi-persistent scheduling resource configured by the NTN network device for the terminal.

[0208] In some embodiments, the period information may be period information of semi-persistent scheduling.

[0209] It should be noted that the NTN network device may be configured with multiple transmission resources for the first signal. When the NTN network device needs to send the first signal, it may activate the transmission resource and use the transmission resource to send the first signal. The transmission resource may be used to transmit other data when it is not activated.

[0210] It can be understood that the network device sends the first signal within the transmission period of the first signal.

[0211] In some embodiments, the time domain offset information is used to indicate an offset of the time domain position of the first signal relative to a reference time domain position.

[0212] In some embodiments, the reference time domain position may be the starting position of the time unit.

[0213] In some embodiments, a time unit may include one of the following: a radio frame, a subframe, a time slot, a mini-time slot, a symbol.

[0214] In some embodiments, the reference time domain position may be a time domain position determined according to a reference signal periodically sent by a network device of the NTN.

[0215] Exemplarily, the sending time of a reference signal last sent by the NTN network device may be determined as the reference time domain position.

[0216] In some embodiments, the reference signal may include at least one of the following: a synchronization and system information block (SSB); a channel state information-reference signal (CSI-RS).

[0217] It is understandable that the time domain position of the SSB of each cell is fixed. When the terminal accesses the serving cell, the serving cell sends second information to the terminal; the second information is used to indicate the time domain position of the SSB sent by the serving cell.

[0218] Here, the serving cell may refer to a cell with which an RRC connection is established with the terminal device; or, the serving cell may refer to a cell in which the terminal device resides.

[0219] In some embodiments, for a terminal in an RRC connected state, the serving cell may send the second information to the terminal via RRC signaling.

[0220] In some embodiments, for a terminal in an RRC non-connected state, the serving cell may send the second information to the terminal by broadcasting.

[0221] In some embodiments, the RRC non-connected state may include an idle state and / or an inactive state.

[0222] In some embodiments, CSI-RS may be used for channel measurement.

[0223] The terminal may obtain the time domain position of the CSI-RS sent by the network device of the NTN through high-layer signaling and / or a physical broadcast channel.

[0224] In some embodiments, the terminal may determine the time domain position of the first signal according to the reference time domain position and time domain offset information of the reference signal.

[0225] In some embodiments, the frequency domain position information may indicate the frequency domain position at which the first signal is sent.

[0226] It is worth noting that the terminal can determine the time-frequency domain position of the transmission resource for transmitting the first signal within the period of sending the first signal based on the resource information, thereby monitoring the first signal at the time-frequency domain position within the period of the first signal.

[0227] Taking into account that in specific scenarios of satellite communications (such as suburban or rural scenarios), the signal sent by the NTN network device may experience significant signal attenuation during the transmission process, which may cause the terminal to be unable to receive the signal sent by the NTN network device and fail the downlink transmission; in order to reduce the possibility of such downlink transmission failure, the network device can pre-configure a first signal for the terminal; and send first information indicating the signal sequence and / or transmission resource of the first signal to the terminal, so that the terminal can actively search for the first signal based on the first information to determine whether there is downlink transmission.

[0228] In some embodiments, the first signal includes one of the following:

[0229] The first type of signal is for a single terminal;

[0230] The second type of signal is for a terminal group, which includes one or more terminals;

[0231] The third type of signal is for all terminals in the cell.

[0232] In some embodiments, the first type of signal may be a terminal-level first signal.

[0233] It is worth noting that, for the first type of signal, the NTN network device will directly send the first information of the first type of signal to the corresponding terminal.

[0234] In some embodiments, the network device of the NTN sends the first information of the first type of signal to the corresponding terminal through dedicated signaling.

[0235] In some embodiments, the dedicated signaling may be an RRC layer message.

[0236] In some embodiments, the transmission resources corresponding to the first type of signals of different terminals may be different.

[0237] In some embodiments, the scrambling sequences corresponding to the first type of signals of different terminals may also be different.

[0238] It can be understood that after receiving the first signal, the terminal can descramble the first signal according to the scrambling sequence indicated by the scrambling sequence identifier in the first information. If the first signal is successfully descrambled, it means that the first signal is sent to this terminal; if the first signal cannot be descrambled, it means that the first signal is not sent to this terminal.

[0239] In some embodiments, the second type of signal may be a first signal at the terminal group level.

[0240] It is understandable that the second type of signal may be a common signal for a group of terminals. It is worth noting that for the second type of signal, the NTN network device may send the first information of the second type of signal to the corresponding terminal group in a multicast manner.

[0241] In some embodiments, the cyclic shift parameter and / or scrambling sequence identifier determined by multiple different terminals in the same terminal group based on the first information is the same.

[0242] In some embodiments, the period, time domain offset information and / or frequency domain position information determined by multiple different terminals in the same terminal group based on the first information are the same.

[0243] In some embodiments, the third type of signal may be a cell-level first signal.

[0244] It is understandable that the third type of signal may be a common signal for all terminals in a cell. It is worth noting that for the third type of signal, the NTN network device may broadcast the first information of the third type of signal to all terminals in the cell.

[0245] In some embodiments, the cyclic shift parameter and / or scrambling sequence identifier determined by different terminals in the same cell based on the first information is the same.

[0246] In some embodiments, the period, time domain offset information and / or frequency domain location information determined by different terminals in the same cell based on the first information are the same.

[0247] Step S2102: The NTN network device sends a first signal.

[0248] In some embodiments, the terminal monitors a first signal sent by a network device of the NTN.

[0249] In some embodiments, the first signal is used to instruct the terminal to receive downlink transmission.

[0250] In some embodiments, the NTN network device sends the first signal, including: when there is downlink transmission to the terminal, the NTN network device sends the first signal; or when downlink transmission with the terminal is interrupted, the NTN network device sends the first signal.

[0251] It is worth noting that, for a terminal in a non-connected state, when the NTN network device has downlink transmission to send to the terminal, the NTN network device may send a first signal so that the terminal monitors the paging message with a better channel, thereby establishing an RRC connection with the NTN network device and receiving the downlink transmission based on the established RRC connection.

[0252] In some embodiments, during downlink transmission between the NTN network device and a terminal in a connected state, the downlink transmission between the NTN network device and the terminal is interrupted. The NTN network device may send a first signal so that the terminal actively restores the RRC connection with the NTN network device and continues to receive downlink transmission.

[0253] In some embodiments, the first signal includes one of the following:

[0254] The first type of signal is for a single terminal;

[0255] The second type of signal is for a terminal group, which includes one or more terminals;

[0256] The third type of signal is for all terminals in the cell.

[0257] In some embodiments, the first type of signal may be a terminal-level first signal.

[0258] It is understandable that if the NTN network device has downlink transmission for a certain terminal, and the terminal has first information of the first type of signal, the NTN network device may preferentially send the first type of signal.

[0259] In some embodiments, the second type of signal may be a first signal at the terminal group level. It is understandable that the second type of signal may be a common signal for a group of terminals.

[0260] If the downlink transmission of the NTN network device is for a terminal group, or the downlink transmission of the NTN network device is for multiple terminals and the multiple terminals belong to the same terminal group, the NTN network device may preferentially send the second type of signal.

[0261] In some embodiments, the third type of signal may be a cell-level first signal.

[0262] It can be understood that the third type of signal may be a common signal for all terminals in a cell.

[0263] If the downlink transmission of the NTN network device is for multiple terminals, and the multiple terminals belong to multiple different terminal groups, the NTN network device may send third information to prompt the multiple terminals to receive the downlink transmission.

[0264] It is worth noting that in order to reduce the false wake-up of terminals in the cell, NTN network equipment should try not to send the third type of signal unless necessary.

[0265] In some embodiments, downlink transmission includes at least one of the following:

[0266] Terminal paging message;

[0267] Downlink service data of the terminal.

[0268] In some embodiments, the paging message is used to instruct a terminal in a non-connected state to establish an RRC connection with a network device of the NTN.

[0269] In some embodiments, the paging message may include: a paging reason.

[0270] In some embodiments, the paging cause may include: system message update, and / or downlink service data reception.

[0271] In some embodiments, when the NTN network device fails to page the terminal, the NTN network device sends a first signal.

[0272] It can be understood that since the first signal instructs the terminal to receive downlink transmission (for example, receive a paging message), if the NTN network device can successfully page the terminal, the NTN network device does not need to send the first signal; if the NTN network device fails to page the terminal, in order to successfully establish an RRC connection with the terminal, the NTN network device may send the first signal.

[0273] In some embodiments, the network device of the NTN may send a first signal according to the first information.

[0274] In some embodiments, the first information may include at least one of the following:

[0275] Signal sequence information, used to determine a signal sequence corresponding to the first signal;

[0276] Resource information, used to indicate the transmission resource of the first signal.

[0277] In some embodiments, the network device of the NTN may generate the first signal according to the signal sequence information.

[0278] In some embodiments, the signal sequence information may include at least one of the following:

[0279] Root sequence identifier;

[0280] cyclic shift parameters;

[0281] Scrambling sequence identifier.

[0282] In some embodiments, the network device of the NTN may generate the first signal based on the root sequence corresponding to the root sequence identifier.

[0283] In some embodiments, the NTN network device may perform a cyclic shift on the root sequence corresponding to the root sequence identifier according to the cyclic shift parameter to obtain the first signal.

[0284] In some embodiments, the network device of the NTN may scramble the root sequence corresponding to the root sequence identifier based on the scrambling sequence corresponding to the scrambling sequence identifier to obtain the first signal.

[0285] In some embodiments, the network device of the NTN may send the first signal on the transmission resource indicated by the resource information.

[0286] In some embodiments, the resource information may include at least one of the following:

[0287] Cycle information;

[0288] Time domain offset information;

[0289] Frequency domain location information.

[0290] The NTN network device may determine a time-frequency domain resource position for transmitting the first signal according to the resource information, so as to send the first signal at the time-frequency domain resource position.

[0291] In some embodiments, the terminal monitors a first signal sent by a network device of the NTN according to the first information.

[0292] It is understandable that the terminal may determine the time-frequency domain position of the first signal according to the first information, so as to search for the first signal at the time-frequency domain position.

[0293] In some embodiments, the first signal is a physical layer signal.

[0294] It should be noted that the first signal may be a physical layer signal, and the difficulty of searching for the first signal by the terminal is less than the difficulty of searching for SSB, CSI-RS and other signals by the terminal.

[0295] Step S2103: The terminal adjusts the monitoring state for receiving downlink transmission.

[0296] In some embodiments, upon monitoring the first signal, the terminal adjusts a monitoring state of the terminal for receiving downlink transmission.

[0297] In some embodiments, the terminal monitors the first signal, indicating that there is downlink transmission between the NTN network device and the terminal; in order to improve the success rate of downlink transmission, the terminal can adjust the monitoring state of receiving downlink transmission.

[0298] In some embodiments, when the terminal monitors the first signal, it outputs a prompt message.

[0299] In some embodiments, the prompt information is used to prompt adjustment of the terminal's receiving parameters, or to prompt that there is downlink transmission; based on the user operation on the prompt information, the monitoring state of the terminal receiving the downlink transmission is adjusted.

[0300] It is worth noting that the first signal may be a prompt signal; when the terminal monitors the first signal, it may output prompt information to the user so that the user can perform corresponding operations on the terminal according to the prompt information to trigger the terminal to adjust the monitoring state of the terminal receiving downlink transmission.

[0301] It is understandable that after monitoring the first signal, the terminal outputs prompt information to prompt the user to adjust the receiving parameters of the terminal to improve the channel conditions of the downlink transmission.

[0302] In some embodiments, adjusting the receiving parameters of the terminal may include adjusting a location at which the terminal monitors downlink transmissions.

[0303] In some embodiments, the information content of the prompt information may include at least one of the following: adjusting the current location of the terminal; the target location; and location guidance information.

[0304] For example, when the user is in a basement environment, if the terminal detects the first signal, it can output a prompt message; the prompt message can prompt the user to move from the basement environment to an environment that is more suitable for downlink transmission (for example, an open outdoor environment) so as to improve the channel environment for downlink transmission and increase the success rate of downlink transmission.

[0305] It is worth noting that if the terminal monitors the first signal, it indicates that the NTN network coverage of the terminal is limited. In order to enable the terminal to successfully receive downlink transmission, the terminal's position can be changed to change the NTN network coverage of the terminal.

[0306] In some embodiments, the terminal adjusting the listening state of receiving the downlink state may include: the terminal switching from a dormant state to an active state.

[0307] It should be noted that, in order to save power of the terminal, the terminal can enter a sleep state without data interaction (including uplink transmission and / or downlink transmission); the terminal in the sleep state can monitor the first signal according to the first information; and when the first signal is monitored, it indicates that the NTN network device has downlink transmission with the terminal, and the terminal can switch from the sleep state to the active state to receive the downlink transmission.

[0308] In some embodiments, when the first signal is monitored, adjusting the monitoring state of the terminal for receiving downlink transmission includes at least one of the following:

[0309] When the first signal is monitored, adjusting the position at which the terminal monitors the downlink transmission;

[0310] When the first signal is monitored, antenna parameters for the terminal to monitor downlink transmission are adjusted.

[0311] It is understandable that the detection of the first signal by the terminal indicates the presence of downlink transmission. To improve the success rate of receiving downlink transmission, the position where the terminal monitors the downlink transmission may be adjusted to change the communication environment of the downlink transmission.

[0312] In some embodiments, antenna parameters may include at least one of the following:

[0313] The total radiated power of the antenna;

[0314] The omnidirectional sensitivity of the antenna;

[0315] Antenna efficiency;

[0316] Number of antennas.

[0317] In some embodiments, the total radiated power of an antenna is used to indicate the actual radiated power of the antenna.

[0318] It should be noted that the total radiation power can be defined as the integration of the radiation power in different directions on the entire radiation sphere.

[0319] In some embodiments, when the terminal detects the first signal, the total radiation power of the antenna may be increased.

[0320] In some embodiments, the omnidirectional sensitivity of an antenna is used to indicate the minimum average value of power that a receiver of a terminal can receive in all directions.

[0321] It should be noted that the omnidirectional sensitivity of the antenna is used to indicate the receiving performance of the terminal.

[0322] In some embodiments, when the terminal detects the first signal, the omnidirectional sensitivity of the antenna may be reduced.

[0323] In some embodiments, antenna efficiency is the ratio of the power on the radiation resistance to the total power received by the antenna.

[0324] In some embodiments, antenna efficiency is used to indicate the energy received by the antenna.

[0325] In some embodiments, when the terminal monitors the first signal, the antenna efficiency of the antenna may be increased.

[0326] In some embodiments, the number of antennas is used to indicate the number of antennas in the terminal used to monitor downlink transmission.

[0327] In some embodiments, when the terminal monitors the first signal, the number of antennas used by the terminal to monitor downlink transmission may be increased.

[0328] In some embodiments, when the terminal monitors the first signal, the terminal may adaptively adjust antenna parameters according to current channel conditions.

[0329] Step S2104: The terminal synchronizes with the NTN network device.

[0330] In some embodiments, upon receiving the first signal, the terminal synchronizes with a network device of the NTN to receive downlink transmission.

[0331] In some embodiments, upon receiving the first signal, the terminal performs downlink synchronization with a network device of the NTN.

[0332] In some embodiments, the terminal synchronizes with the network device of the NTN, including at least one of the following:

[0333] The terminal is synchronized based on the reference signal sent by the NTN network equipment;

[0334] The terminal is synchronized based on the first signal.

[0335] When the terminal receives the first signal, it indicates that there is downlink transmission between the NTN network device and the terminal. In order to improve the reliability of the downlink transmission, the terminal can receive a reference signal for downlink synchronization sent by the NTN network device and perform synchronization with the NTN network device based on the reference signal.

[0336] It should be noted that the terminal can estimate the timing offset between the terminal and the NTN network device based on the reference signal; thereby adjusting the timing information of the terminal according to the timing offset to establish downlink synchronization with the NTN network device.

[0337] In some embodiments, the reference signal includes at least one of: a synchronization and system information block (SSB); a channel state information-reference signal (CSI-RS).

[0338] In some embodiments, the first signal may be used to determine a timing offset between the terminal and a network device of the NTN.

[0339] It is worth noting that the first signal itself can be used for synchronization between the terminal and the NTN network device. Therefore, after receiving the first signal, the terminal can directly determine the timing deviation between the terminal and the NTN network device based on the first signal; thereby establishing synchronization with the NTN network device based on the timing deviation.

[0340] In some embodiments, the method further comprises:

[0341] When the first signal is not detected, the current state of the terminal is maintained.

[0342] When the terminal does not detect the first signal, it indicates that there is no downlink transmission between the NTN network device and the terminal; based on this, the terminal can continue to maintain the current state to reduce the power consumption of the terminal.

[0343] In some embodiments, the term "information" can be interchangeable with terms such as "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", and "data".

[0344] In some embodiments, the term "send" can be interchanged with terms such as "transmit", "report", and "transmit".

[0345] The information processing method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2104. For example, steps S2102 to S2104 may be implemented as independent embodiments, and step S2101 may be implemented as an independent embodiment, but is not limited thereto.

[0346] In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understandable that the terminal may determine the first information according to a predefined rule without the need for the NTN network device to send the first information.

[0347] In some embodiments, steps S2102, S2103, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that if the NTN network device is able to successfully page the terminal, or if the NTN network device has no downlink transmission requirements, the NTN network device does not need to send the first signal; if the terminal does not monitor the first signal, it will maintain its current state, will not adjust its monitoring state for receiving downlink transmissions, and will not synchronize with the NTN network device.

[0348] FIG2B is an interactive diagram illustrating an information processing method according to an exemplary embodiment. As shown in FIG2B , the embodiment of the present disclosure relates to an information processing method for use in a communication system 100, the method comprising:

[0349] Step S2201: The terminal determines the first information.

[0350] In some embodiments, the terminal determines the first information according to a predefined rule.

[0351] In some embodiments, the predefined rule may be a rule agreed upon by a protocol, or the predefined rule may be a rule determined by the terminal based on implementation.

[0352] In some embodiments, the terminal may be a terminal supporting an NTN network.

[0353] In some embodiments, the first information may be used to indicate a detection method of the first signal.

[0354] It is understandable that the terminal may determine the first information according to a predefined rule, so as to determine a detection method for the first signal according to the first information, and monitor the first signal according to the detection method.

[0355] In some embodiments, the first information may be configuration information of the first signal.

[0356] In some embodiments, the first information includes at least one of the following:

[0357] Signal sequence information, used to determine a signal sequence corresponding to the first signal;

[0358] Resource information, used to indicate the transmission resource of the first signal.

[0359] It is worth noting that the terminal monitors the signal transmitted on the transmission resource according to the transmission resource indicated by the resource information; and determines whether the monitored signal is the first signal according to the signal sequence information.

[0360] In some embodiments, the signal sequence information includes at least one of the following:

[0361] Root sequence identifier;

[0362] cyclic shift parameters;

[0363] Scrambling sequence identifier.

[0364] In some embodiments, the root sequence identifier is used to indicate a root sequence of the first signal.

[0365] In some embodiments, the candidate sequences and sequence identifiers of the root sequence may be agreed upon by a protocol, and thus the root sequence identifier may be carried in the first information to indicate the root sequence of the first signal.

[0366] The root sequence information may be used by the terminal to perform correlation demodulation on the first signal.

[0367] It should be noted that the signal sequence corresponding to the first signal may be directly generated from the root sequence corresponding to the root sequence identifier.

[0368] In some embodiments, the cyclic shift parameter is used to indicate to perform cyclic shift on the root sequence.

[0369] In some embodiments, the cyclic shift parameters may include: a cyclic shift direction and / or a cyclic shift step size.

[0370] In some embodiments, the cyclic shift direction may include: cyclic left shift and / or cyclic right shift.

[0371] In some embodiments, the cyclic shift step size may indicate the cyclic shift amount for each cyclic shift of the signal sequence.

[0372] In some embodiments, the signal sequence corresponding to the first signal may be a signal sequence obtained by cyclically shifting a root sequence of the first signal according to a cyclic shift parameter.

[0373] It is understood that at the signal transmitting end, the NTN network equipment may cyclically shift the root sequence of the first signal according to the cyclic shift step size and cyclic shift direction determined by predefined rules to obtain a cyclically shifted sequence. At the signal receiving end, the terminal may cyclically shift the received signal sequence in the direction opposite to the cyclic shift step size and cyclic shift direction to obtain a root sequence corresponding to the signal sequence.

[0374] In some embodiments, the scrambling sequence identifier is used to identify a scrambling sequence used to scramble the first signal.

[0375] In some embodiments, the signal sequence corresponding to the first signal may be a signal sequence obtained by scrambling a root sequence of the first signal using a scrambling sequence.

[0376] In some embodiments, the signal sequence corresponding to the first signal may be a signal sequence obtained by scrambling a cyclically shifted signal sequence using a scrambling sequence.

[0377] It is understood that at the signal transmitting end, the NTN network device may scramble the generated signal sequence according to the scrambling sequence indicated by the scrambling sequence identifier determined according to predefined rules to improve the signal's anti-interference ability. At the signal receiving end, the terminal may descramble the received signal according to the scrambling sequence indicated by the scrambling sequence identifier to restore the signal sequence of the first signal.

[0378] It is worth noting that scrambling technology can also be used to distinguish terminals. It is understandable that if a terminal cannot successfully descramble the received signal according to the pre-configured scrambling sequence after receiving it, it means that the signal is not sent to the terminal by NTN network equipment.

[0379] At the signal transmitting end, the NTN network device can modulate the signal sequence of the first signal onto the carrier to obtain the first signal; at the signal receiving end, after the terminal receives the first signal, it can demodulate the first signal to obtain the signal sequence corresponding to the first signal, and then descramble and / or cyclically shift the signal sequence of the first signal to obtain the root sequence of the first signal.

[0380] In some embodiments, the resource information includes at least one of the following:

[0381] Cycle information;

[0382] Time domain offset information;

[0383] Frequency domain location information.

[0384] In some embodiments, the period information is used to indicate a period for sending the first signal;

[0385] In some embodiments, the transmission resource for the first signal may be a periodic static resource. It should be noted that the transmission resource may be a transmission resource dedicated to transmitting the first signal, and the NTN network device may periodically transmit the first signal on the transmission resource; when the NTN network device does not transmit the first signal, the transmission resource will not be occupied.

[0386] In some embodiments, the transmission resource of the first signal may be a semi-persistent scheduling resource.

[0387] In some embodiments, the period information may be period information of semi-persistent scheduling.

[0388] It should be noted that the first signal can be configured with multiple transmission resources. When the NTN network device needs to send the first signal, it can activate the transmission resource and use the transmission resource to send the first signal. When the transmission resource is not activated, it can be used to transmit other data.

[0389] It can be understood that the network device sends the first signal within the transmission period of the first signal.

[0390] In some embodiments, the time domain offset information is used to indicate an offset of the time domain position of the first signal relative to a reference time domain position.

[0391] In some embodiments, the reference time domain position may be a starting position of an absolute time unit.

[0392] In some embodiments, the absolute time unit may include one of the following: a radio frame, a subframe, a time slot, a mini-time slot, a symbol.

[0393] In some embodiments, the reference time domain position may be a time domain position determined according to a reference signal periodically sent by a network device of the NTN.

[0394] Exemplarily, the sending time of a reference signal last sent by the NTN network device may be determined as the reference time domain position.

[0395] In some embodiments, the reference signal may include at least one of the following:

[0396] Synchronization and system information block SSB;

[0397] Channel State Information-Reference Signal CSI-RS.

[0398] It is understandable that the time domain position of the SSB of each cell is fixed. When the terminal accesses the serving cell, the serving cell sends second information to the terminal; the second information is used to indicate the time domain position of the SSB sent by the serving cell.

[0399] Here, the serving cell may refer to a cell with which an RRC connection is established with the terminal device; or, the serving cell may refer to a cell in which the terminal device resides.

[0400] In some embodiments, for a terminal in an RRC connected state, the serving cell may send the second information to the terminal via RRC signaling.

[0401] In some embodiments, for a terminal in an RRC non-connected state, the serving cell may send the second information to the terminal by broadcasting.

[0402] In some embodiments, the RRC non-connected state may include: an idle state and an inactive state.

[0403] In some embodiments, CSI-RS is used for channel measurement.

[0404] The terminal may obtain the time domain position of the CSI-RS sent by the network device of the NTN through high-layer signaling and / or a physical broadcast channel.

[0405] In some embodiments, the terminal may determine the time domain position of the first signal according to the reference time domain position and time domain offset information of the reference signal.

[0406] In some embodiments, the frequency domain position information may indicate the frequency domain position at which the first signal is sent.

[0407] It is worth noting that the terminal can determine the time-frequency domain position of the transmission resource for transmitting the first signal within the period of sending the first signal based on the resource information, thereby monitoring the first signal at the time-frequency domain position within the period of the first signal.

[0408] Taking into account the specific scenarios of satellite communications (such as suburban or rural scenarios), the signal sent by the NTN network device may experience significant signal attenuation during the transmission process, which may cause the terminal to be unable to receive the signal sent by the NTN network device and fail the downlink transmission; in order to reduce the situation of such downlink transmission failure, the terminal may first determine the first information, and actively search for the first signal based on the signal sequence of the first signal and / or the transmission resource of the first signal indicated by the first information to determine whether there is downlink transmission.

[0409] In some embodiments, the first signal includes one of the following:

[0410] The first type of signal is for a single terminal;

[0411] The second type of signal is for a terminal group, which includes one or more terminals;

[0412] The third type of signal is for all terminals in the cell.

[0413] In some embodiments, the first type of signal may be a terminal-level first signal.

[0414] In some embodiments, the transmission resources corresponding to the first type of signals of different terminals may be different.

[0415] In some embodiments, the scrambling sequences corresponding to the first type of signals of different terminals may also be different.

[0416] It can be understood that after receiving the first signal, the terminal can descramble the first signal according to the scrambling sequence indicated by the scrambling sequence identifier in the first information. If the first signal is successfully descrambled, it means that the first signal is sent to this terminal; if the first signal cannot be descrambled, it means that the first signal is not sent to this terminal.

[0417] In some embodiments, the second type of signal may be a first signal at the terminal group level.

[0418] It can be understood that the second type of signal may be a common signal for a group of terminals.

[0419] In some embodiments, the cyclic shift parameter and / or scrambling sequence identifier determined by multiple different terminals in the same terminal group based on the first information is the same.

[0420] In some embodiments, the period, time domain offset information and / or frequency domain position information determined by multiple different terminals in the same terminal group based on the first information are the same.

[0421] In some embodiments, the third type of signal may be a cell-level first signal.

[0422] It can be understood that the third type of signal may be a common signal for all terminals in a cell.

[0423] In some embodiments, the cyclic shift parameter and / or scrambling sequence identifier determined by different terminals in the same cell based on the first information is the same.

[0424] In some embodiments, the period, time domain offset information and / or frequency domain location information determined by different terminals in the same cell based on the first information are the same.

[0425] Step S2202: The NTN network device sends a first signal.

[0426] In some embodiments, the optional implementation of step S2202 can refer to the optional implementation of step S2102 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0427] Step S2203: The terminal adjusts the monitoring state for receiving downlink transmission.

[0428] In some embodiments, the optional implementation of step S2203 can refer to the optional implementation of step S2103 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0429] Step S2204: The terminal synchronizes with the NTN network device.

[0430] In some embodiments, the optional implementation of step S2204 can refer to the optional implementation of step S2104 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0431] The information processing method involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2204. For example, steps S2202 to S2204 may be implemented as independent embodiments, and step S2201 may be implemented as an independent embodiment, but is not limited thereto.

[0432] In some embodiments, steps S2203, S2204, and S2205 are optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that the NTN network device may send the first information to the terminal without the terminal having to determine the first information on its own.

[0433] In some embodiments, steps S2202, S2203, and S2204 are optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that if the NTN network device can successfully page the terminal, or if the NTN network device has no downlink transmission requirements, the NTN network device does not need to send the first signal; if the terminal does not monitor the first signal, it will maintain its current state, will not adjust its monitoring state for receiving downlink transmissions, and will not synchronize with the NTN network device.

[0434] FIG3A is a flow chart of an information processing method according to an exemplary embodiment. As shown in FIG3A , the embodiment of the present disclosure relates to an information processing method, which is executed by terminal 101 and includes:

[0435] Step S3101: The terminal receives first information sent by the NTN network device.

[0436] In some embodiments, the optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0437] Step S3102: The terminal monitors a first signal sent by an NTN network device.

[0438] In some embodiments, the optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0439] Step S3103: The terminal adjusts the monitoring state for receiving downlink transmission.

[0440] In some embodiments, the optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0441] Step S3104: The terminal synchronizes with the NTN network device.

[0442] In some embodiments, the optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0443] The information processing method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3104. For example, steps S3102 to S3104 may be implemented as independent embodiments, and step S3101 may be implemented as an independent embodiment, but is not limited thereto.

[0444] In some embodiments, step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that the terminal may determine the first information according to a predefined rule without the need for the NTN network device to send the first information.

[0445] In some embodiments, steps S3102, S3103, and S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that if the NTN network device can successfully page the terminal, or if the NTN network device has no downlink transmission requirements, the NTN network device does not need to send the first signal; if the terminal does not monitor the first signal, it will maintain its current state, will not adjust its monitoring state for receiving downlink transmissions, and will not synchronize with the NTN network device.

[0446] FIG3B is a flow chart of an information processing method according to an exemplary embodiment. As shown in FIG3B , the embodiment of the present disclosure relates to an information processing method, which is executed by terminal 101 and includes:

[0447] Step S3201: The terminal determines the first information.

[0448] In some embodiments, the optional implementation of step S3201 can refer to the optional implementation of step S2201 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.

[0449] Step S3202: The terminal monitors a first signal sent by an NTN network device.

[0450] In some embodiments, the optional implementation of step S3202 can refer to the optional implementation of step S2102 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0451] Step S3203: The terminal adjusts the monitoring state for receiving downlink transmission.

[0452] In some embodiments, the optional implementation of step S3203 can refer to the optional implementation of step S2103 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0453] Step S3204: The terminal synchronizes with the NTN network device.

[0454] In some embodiments, the optional implementation of step S3204 can refer to the optional implementation of step S2104 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0455] The information processing method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3204. For example, steps S3202 to S3204 may be implemented as independent embodiments, and step S3201 may be implemented as an independent embodiment, but is not limited thereto.

[0456] In some embodiments, step S3201 is optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that the NTN network device may send the first information to the terminal without the terminal having to determine the first information on its own.

[0457] In some embodiments, steps S3202, S3203, and S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that if the NTN network device can successfully page the terminal, or if the NTN network device has no downlink transmission requirements, the NTN network device does not need to send the first signal; if the terminal does not detect the first signal, it will maintain its current state, will not adjust its monitoring state for receiving downlink transmissions, and will not synchronize with the NTN network device.

[0458] FIG3C is a flow chart of an information processing method according to an exemplary embodiment. As shown in FIG3C , the embodiment of the present disclosure relates to an information processing method, which is executed by terminal 101 and includes:

[0459] Step S3301: The terminal monitors a first signal sent by a non-terrestrial NTN network device.

[0460] In some embodiments, the first signal is used to instruct the terminal to receive downlink transmission.

[0461] In some embodiments, the method further comprises:

[0462] When the first signal is monitored, the monitoring state of the terminal for receiving downlink transmission is adjusted.

[0463] In some embodiments, when the first signal is monitored, adjusting the monitoring state of the terminal for receiving downlink transmission includes at least one of the following:

[0464] When the first signal is monitored, adjusting the position at which the terminal monitors the downlink transmission;

[0465] When the first signal is monitored, antenna parameters for the terminal to monitor downlink transmission are adjusted.

[0466] In some embodiments, the terminal monitors a first signal sent by a non-terrestrial NTN network device, including:

[0467] A first signal sent by a non-terrestrial NTN network device is monitored according to the first information.

[0468] In some embodiments, the method comprises:

[0469] receiving first information sent by a network device of NTN; or,

[0470] The first information is determined according to a predefined rule.

[0471] In some embodiments, the first information includes at least one of the following:

[0472] Signal sequence information, used to determine a signal sequence corresponding to the first signal;

[0473] Resource information, used to indicate the transmission resource of the first signal.

[0474] In some embodiments, the signal sequence information includes at least one of the following:

[0475] A root sequence identifier, used to indicate a root sequence of the first signal;

[0476] a cyclic shift parameter, used to indicate to perform cyclic shift on the root sequence;

[0477] The scrambling sequence identifier is used to identify the scrambling sequence used to scramble the first signal.

[0478] In some embodiments, the resource information includes at least one of the following:

[0479] Period information, indicating a period for sending the first signal;

[0480] time domain offset information, indicating an offset of a time domain position of the first signal relative to a reference time domain position;

[0481] The frequency domain position information indicates the frequency domain position at which the first signal is sent.

[0482] In some embodiments, the first signal is a physical layer signal.

[0483] In some embodiments, downlink transmission includes at least one of the following:

[0484] Terminal paging message;

[0485] Downlink service data of the terminal.

[0486] In some embodiments, the method further comprises:

[0487] Upon receiving the first signal, the terminal synchronizes with the network device of the NTN to receive downlink transmission.

[0488] In some embodiments, the terminal synchronizes with the network device of the NTN, including at least one of the following:

[0489] The terminal is synchronized based on the reference signal sent by the NTN network equipment;

[0490] The terminal is synchronized based on the first signal.

[0491] In some embodiments, the reference signal includes at least one of the following:

[0492] Synchronization and system information block SSB;

[0493] Channel State Information-Reference Signal CSI-RS.

[0494] In some embodiments, the first signal includes one of the following:

[0495] The first type of signal is for a single terminal;

[0496] The second type of signal is for a terminal group, which includes one or more terminals;

[0497] The third type of signal is for all terminals in the cell.

[0498] In some embodiments, the method further comprises:

[0499] When the first signal is not detected, the current state of the terminal is maintained.

[0500] FIG4 is a flow chart of an information processing method according to an exemplary embodiment. As shown in FIG4 , the embodiment of the present disclosure relates to an information processing method, which is executed by the network device 102 and includes:

[0501] Step S4101: The NTN network device sends first information to the terminal.

[0502] In some embodiments, the optional implementation of step S4101 can refer to the optional implementation of step S2102 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0503] Step S4102: The NTN network device sends a first signal.

[0504] In some embodiments, the optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0505] The information processing method involved in the embodiment of the present disclosure may include at least one of step S4101 to step S4102. For example, step S4101 may be implemented as an independent embodiment, and step S4102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0506] In some embodiments, step S4201 is optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that the terminal may determine the first information according to a predefined rule without the need for the NTN network device to send the first information.

[0507] In some embodiments, step S4202 is optional, and one or more of these steps may be omitted or replaced in different embodiments. It is understood that if the NTN network device can successfully page the terminal, or if the NTN network device has no downlink transmission requirements, the NTN network device does not need to send the first signal.

[0508] FIG5 is an interactive diagram illustrating an information processing method according to an exemplary embodiment. As shown in FIG5 , the embodiment of the present disclosure relates to an information processing method for a communication system 100, and the method includes one of the following steps:

[0509] Step S5101: The NTN network device sends a first signal.

[0510] Step S5102: The terminal monitors a first signal sent by a non-terrestrial NTN network device.

[0511] In some embodiments, the first signal is used to instruct the terminal to receive downlink transmission.

[0512] In some embodiments, the above method may include the methods of the above-mentioned communication system side, terminal side, network device side, etc. embodiments, which will not be repeated here.

[0513] The information processing method shown in the embodiment of the present disclosure can be applied to a satellite communication scenario, as shown in FIG6A . FIG6A is a schematic diagram of a satellite communication scenario according to an exemplary embodiment.

[0514] The disclosed embodiment provides a design method for early warning signals in satellite communication scenarios, which can ensure that the terminal can receive the paging information of the base station in a timely manner when the coverage is limited, and ensure that the delay of service transmission meets the requirements.

[0515] It is worth noting that the early warning signal corresponds to the first signal of the present disclosure.

[0516] The terminal receives configuration information from the base station or determines the configuration information of the warning signal based on a predefined method. The configuration information is used by the terminal to determine how to perform warning signal detection based on the information.

[0517] It is worth noting that the configuration information corresponds to the first information of the present disclosure.

[0518] Configuration information can be used to determine at least the following information:

[0519] The signal sequence of the early warning signal; the signal sequence includes the root sequence of the sequence, as well as possible cyclic shift, scrambling sequence, etc.

[0520] The time-frequency resource location of the warning signal; the time-frequency resource location includes the period and offset value in the time domain; and / or includes the resource location in the frequency domain.

[0521] The warning signal is a common signal for a group of users. The terminal detects the common signal through high-level signaling configuration or predefined methods. As shown in Figure 6B, Figure 6B is a schematic diagram of a warning signal detection scenario according to an exemplary embodiment. It is worth noting that this warning signal corresponds to the second type of signal disclosed herein.

[0522] In one implementation method, the configuration of the terminal receiving base station determines the signal characteristics of the received warning signal, such as whether the warning signal is encrypted by a common sequence, or the signal cyclic shift parameter of the warning signal is consistent for a group of terminals, that is, the warning signal detected by users in a group of terminals is the same signal sequence.

[0523] In another implementation method, the terminal receives the configuration of the base station to determine the time-frequency resource location for receiving the warning signal, and the time-frequency resource locations are overlapping for a group of terminals.

[0524] After receiving the warning signal, the terminal needs to perform downlink synchronization, detect the paging information, and further determine whether downlink data has arrived.

[0525] The warning signal is a signal from the user terminal. The terminal detects the public signal through high-level signaling configuration or pre-defined methods.

[0526] In one implementation method, the terminal can receive the configuration of the base station to determine the signal characteristics of the received warning signal, and the terminal can determine the terminal-specific (UE-specific) signal sequence. As shown in Figure 6C, Figure 6C is a second schematic diagram of a warning signal detection scenario according to an exemplary embodiment.

[0527] When the terminal detects the warning signal, it determines that downlink data has arrived, performs downlink synchronization operations, and receives the downlink data.

[0528] It is worth noting that the terminal-specific (UE-specific) warning signal corresponds to the first type of signal of the present disclosure.

[0529] The embodiments of the present disclosure also 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 or a core network device) in any of the above methods.

[0530] It should be understood that the division of the various units or modules in the above devices is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above devices, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0531] In the embodiments of the present disclosure, a 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 a 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 to implement 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.

[0532] Figure 7A is a schematic diagram of the structure of a terminal according to an exemplary embodiment. As shown in Figure 7A, terminal 101 includes a receiving module 1011; receiving module 1011 is configured to monitor a first signal transmitted by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmissions. Optionally, receiving module 1011 is configured to execute the steps related to information reception performed by the terminal in any of the above-mentioned information processing methods, which are not further described here. Optionally, terminal 101 also includes a processing module, which is configured to execute the steps related to information processing performed by the terminal in any of the above-mentioned methods, which are not further described here.

[0533] Figure 7B is a schematic diagram of the structure of a network device according to an exemplary embodiment. As shown in Figure 7B, network device 102 includes: a sending module 1021, configured to send a first signal; the first signal is used to instruct the terminal to receive downlink transmission. Optionally, sending module 1021 is used to execute the steps related to information transmission performed by the terminal in any of the above information processing methods, which are not further described here. Optionally, network device 102 also includes a processing module, which is used to execute the steps related to information processing performed by the terminal in any of the above methods, which are not further described here.

[0534] Figure 8A is a schematic diagram of the structure of a communication device 8100 according to an exemplary embodiment. Communication device 8100 can be a network device (e.g., an access network device or a core network device), a terminal (e.g., a user equipment), a chip, a chip system, or a processor that supports a network device in implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal in implementing any of the above information processing methods. Communication device 8100 can be used to implement the information processing methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0535] 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, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 8101 is used to call instructions to enable the communication device 8100 to perform any of the above communication methods.

[0536] 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 be located outside the communication device 8100.

[0537] 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 communication steps such as sending and receiving in the above method are performed by the transceiver 8103, and the other steps are performed by the processor 8101.

[0538] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0539] Optionally, the communication device 8100 further includes one or more interface circuits 8104, which are connected to the memory 8102. The interface circuits 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 circuits 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0540] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. 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.

[0541] FIG8B is a schematic diagram showing the structure of a chip 8200 according to an exemplary embodiment. If the communication device 8100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present invention is not limited thereto.

[0542] The chip 8200 includes one or more processors 8201 , and the processor 8201 is used to call instructions so that the chip 8200 executes any of the above communication methods.

[0543] In some embodiments, chip 8200 further includes one or more interface circuits 8202, which are connected to memory 8203. Interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and can be used to send signals to memory 8203 or other devices. For example, interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0544] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0545] The present disclosure also provides a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 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 may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but may also be a transient storage medium.

[0546] The present disclosure further provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above communication methods. Optionally, the program product is a computer program product.

[0547] The present disclosure also provides a computer program, which, when executed on a computer, enables the computer to execute any one of the above communication methods.

[0548] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0549] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An information processing method, wherein: The method comprises: The terminal monitors a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

2. The method according to claim 1, wherein: The method further comprises: When the first signal is monitored, a monitoring state of the terminal for receiving the downlink transmission is adjusted.

3. The method according to claim 2, wherein: The step of adjusting the monitoring state of the terminal for receiving the downlink transmission when the first signal is monitored includes at least one of the following: When the first signal is monitored, adjusting the position at which the terminal monitors downlink transmission; When the first signal is monitored, antenna parameters for the terminal to monitor downlink transmission are adjusted.

4. The method according to any one of claims 1 to 3, wherein: The terminal monitors a first signal sent by a non-terrestrial NTN network device, including: A first signal sent by a non-terrestrial NTN network device is monitored according to the first information.

5. The method according to claim 4, wherein: The method comprises: receiving the first information sent by the network device of the NTN; or, The first information is determined according to a predefined rule.

6. The method according to claim 4 or 5, wherein: The first information includes at least one of the following: Signal sequence information, used to determine a signal sequence corresponding to the first signal; Resource information, used to indicate the transmission resource of the first signal.

7. The method according to claim 6, wherein: The signal sequence information includes at least one of the following: A root sequence identifier, used to indicate a root sequence of the first signal; A cyclic shift parameter, used to indicate to perform cyclic shift on the root sequence; A scrambling sequence identifier, used to identify a scrambling sequence used to scramble the first signal.

8. The method according to claim 6, wherein: The resource information includes at least one of the following: Period information, indicating a period for sending the first signal; time domain offset information, indicating an offset of a time domain position of the first signal relative to a reference time domain position; The frequency domain position information indicates the frequency domain position at which the first signal is sent.

9. The method according to any one of claims 1 to 8, wherein: The first signal is a physical layer signal.

10. The method according to any one of claims 1 to 9, wherein: The downlink transmission includes at least one of the following: A paging message of the terminal; Downlink service data of the terminal.

11. The method according to any one of claims 1 to 10, wherein: The method further comprises: In case of receiving the first signal, the terminal synchronizes with the network device of the NTN to receive the downlink transmission.

12. The method according to claim 7, wherein: The terminal is synchronized with the network device of the NTN, including at least one of the following: The terminal is synchronized based on a reference signal sent by a network device of the NTN; The terminal is synchronized based on the first signal.

13. The method according to claim 12, wherein: The reference signal includes at least one of the following: Synchronization and system information block SSB; Channel State Information-Reference Signal CSI-RS.

14. The method according to any one of claims 1 to 13, wherein: The first signal includes one of the following: The first type of signal is for a single terminal; The second type of signal is for a terminal group, wherein the terminal group includes one or more terminals; The third type of signal is for all terminals in the cell.

15. The method according to any one of claims 1 to 14, wherein: The method further comprises: When the first signal is not detected, the current state of the terminal is maintained.

16. An information processing method, wherein: Executed by a network device of NTN, the method includes: The NTN network device sends a first signal; the first signal is used to instruct the terminal to receive downlink transmission.

17. The method according to claim 16, wherein: The NTN network device sends a first signal, including: When there is a downlink transmission sent to the terminal, the network device of the NTN sends the first signal; or, When downlink transmission with the terminal is interrupted, the network device of the NTN sends the first signal.

18. The method according to claim 16 or 17, wherein: The method further comprises: The network device of the NTN sends first information to the terminal; the first information is used by the terminal to monitor the first signal.

19. The method according to claim 18, wherein: The first information includes at least one of the following: Signal sequence information, used to determine a signal sequence corresponding to the first signal; Resource information, used to indicate the transmission resource of the first signal.

20. The method according to claim 19, wherein: The signal sequence information includes at least one of the following: A root sequence identifier, used to indicate a root sequence of the first signal; A cyclic shift parameter, used to indicate to perform cyclic shift on the root sequence; A scrambling sequence identifier, used to identify a scrambling sequence used to scramble the first signal.

21. The method according to claim 19, wherein: The resource information includes at least one of the following: Period information, indicating a period for sending the first signal; time domain offset information, indicating an offset of a time domain position of the first signal relative to a reference time domain position; The frequency domain position information indicates the frequency domain position at which the first signal is sent.

22. The method according to any one of claims 16 to 21, wherein: The first signal is a physical layer signal.

23. The method according to any one of claims 16 to 22, wherein: The downlink transmission includes at least one of the following: A paging message of the terminal; Downlink service data of the terminal.

24. The method according to any one of claims 16 to 23, wherein: The first signal is used for synchronizing the terminal with the network device of the NTN.

25. The method according to any one of claims 16 to 24, wherein: The first signal includes one of the following: The first type of signal is for a single terminal; The second type of signal is for a terminal group, wherein the terminal group includes one or more terminals; The third type of signal is for all terminals in the cell.

26. An information processing method, wherein: The method comprises: The network device of NTN sends a first signal; The terminal monitors a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

27. A terminal, wherein: The terminal comprises: The receiving module is configured to monitor a first signal sent by a non-terrestrial NTN network device; the first signal is used to instruct the terminal to receive downlink transmission.

28. A network device, wherein: The network device comprises: The sending module is configured to send a first signal; the first signal is used to instruct the terminal to receive downlink transmission.

29. A communication system, wherein: The communication system includes a terminal and a network device; the terminal is configured to implement the information processing method described in any one of claims 1 to 15, and the network device is configured to implement the information processing method described in any one of claims 16 to 25.

30. A communication device, wherein: The communication device comprises: one or more processors; The processor is used to call instructions so that the communication device executes the information processing method described in any one of claims 1 to 15 or claims 16 to 25.

31. A storage medium, wherein: The storage medium stores instructions, and when the instructions are executed on the communication device, the communication device executes the information processing method according to any one of claims 1 to 15 or claims 16 to 25.

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