Information transmission method and device

Abstract

Disclosed in embodiments of the present disclosure are an information transmission method and device. The method executed by a terminal comprises: receiving configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN), wherein when the NTN is in different states of the TDM mode, a terminal uses different frequency bands, and the terminal is a terminal accessing a terrestrial network (TN). In this way, the problem of intra-frequency interference of NTNs on TNs is solved.

Description

Information transmission method and apparatus TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to an information transmission method and apparatus. BACKGROUND

[0002] Non-terrestrial Network (NTN) is an important technology introduced by the 5th generation mobile communication system (6G). It provides wireless resources through satellites (or unmanned aerial vehicles).

[0003] The main purpose of the NTN network is to complement the coverage gap of the Terrestrial Network (TN). The coverage area of a satellite can be divided into many beam footprints. Limited by the satellite transmission power, the satellite cannot illuminate all beam footprints in the coverage area at the same time. For TN cells in the beam footprint, intra-frequency interference will occur.

[0004] SUMMARY

[0005] The present disclosure provides an information transmission method and apparatus.

[0006] The first aspect of the present disclosure provides an information transmission method, which is performed by a terminal, and the method comprises:

[0007] receiving configuration information, wherein the configuration information indicates a Time Division Multiplexing (TDM) mode of a Non-Terrestrial Network (NTN);

[0008] wherein, in different states of the TDM mode of the NTN network, the terminal uses different frequency bands, and the terminal is a terminal accessing a Terrestrial Network (TN).

[0009] The second aspect of the present disclosure provides an information transmission method, which is performed by a network device, and the method comprises:

[0010] sending configuration information, wherein the configuration information indicates a Time Division Multiplexing (TDM) mode of a Non-Terrestrial Network (NTN);

[0011] wherein, in different states of the TDM mode of the NTN network, a terminal uses different frequency bands, and the terminal is a terminal accessing a Terrestrial Network (TN).

[0012] The third aspect of the present disclosure provides a terminal, which comprises:

[0013] a transceiver configured to receive configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN);

[0014] wherein the terminal uses different frequency bands in different states of the TDM mode of the NTN network, the terminal being a terminal accessing a terrestrial network (TN).

[0015] A fourth aspect of the present disclosure provides a network device, comprising:

[0016] a transceiver configured to transmit configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN);

[0017] wherein the terminal uses different frequency bands in different states of the TDM mode of the NTN network, the terminal being a terminal accessing a terrestrial network (TN).

[0018] The scheme provided by the embodiments of the present disclosure can enable the TN terminal to determine the frequency bands used when the NTN network is in different states of the TDM mode based on the received time division multiplexing (TDM) mode, thereby solving the problem of in-band interference on the TN within the coverage range of the NTN beam in a frequency division multiplexing (FDM) manner, and improving the performance of the communication system. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background art, the drawings needed to be used in the embodiments of the present disclosure or the background art will be described below.

[0020] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure;

[0021] FIG. 1B is a schematic diagram of a coverage area of an NTN satellite;

[0022] FIG. 2A is a schematic diagram of an information transmission method according to an embodiment of the present disclosure;

[0023] FIG. 2B is a schematic diagram of a TDM mode according to an embodiment of the present disclosure;

[0024] FIGS. 3A-3B are schematic diagrams of an information transmission method according to an embodiment of the present disclosure;

[0025] FIGS. 4A-4B are schematic diagrams of an information transmission method according to an embodiment of the present disclosure;

[0026] FIG. 5 is a schematic diagram of an information transmission method according to an embodiment of the present disclosure;

[0027] FIG. 6A is a schematic diagram of a terminal according to an embodiment of the present disclosure;

[0028] FIG. 6B is a structural schematic diagram of a network device according to an embodiment of the present disclosure;

[0029] FIG. 7A is a structural schematic diagram of a communication device according to an embodiment of the present disclosure;

[0030] FIG. 7B is a structural schematic diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] Embodiments of the present disclosure provide an information transmission method and device.

[0032] receiving configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN);

[0033] wherein the terminal uses different frequency bands in different states of the TDM mode of the NTN network, and the terminal is a terminal accessing the TN network.

[0034] In the above embodiment, the TN terminal can determine the frequency bands used when the NTN network is in different states of the TDM mode based on the received TDM mode, thereby solving the problem of in-band interference of the TN in the NTN beam coverage range in the manner of FDM, and improving the performance of the communication system.

[0035] In some embodiments of the first aspect, the method further includes:

[0036] in a first state of the TDM mode of the NTN network, the terminal uses a first frequency band;

[0037] in a second state of the TDM mode of the NTN network, the terminal uses a frequency band other than a second frequency band in the first frequency band, and the second frequency band is a frequency band used by a terminal accessing the NTN network.

[0038] In some embodiments of the first aspect, the first frequency band is a frequency band configured for the TN network.

[0039] In the above embodiment, the terminal in the TN network uses different frequency bands when the NTN network is in different states of the TDM mode, so that the TN network and the NTN network ensure that there is no in-band interference in the manner of FDM.

[0040] In some embodiments of the first aspect, the TDM mode includes an uplink TDM mode and a downlink TDM mode.

[0041] In the above embodiments, the terminal can receive the DL TDM mode and the UL TDM mode respectively, so that the terminal can directly control uplink and downlink transmission based on the TDM mode, and the difficulty of the terminal to understand the TDM mode is simplified.

[0042] In some embodiments of the first aspect, in some embodiments, the TDM mode comprises at least one of:

[0043] a period of the uplink TDM mode, a duration of an on-duration, and a starting time offset of the on-duration;

[0044] a period of the downlink TDM mode, a duration of an on-duration, and a starting time offset of the on-duration;

[0045] a period of the uplink and downlink TDM mode, and a duration of an on-duration;

[0046] a starting time offset of the on-duration of the uplink TDM mode;

[0047] a starting time offset of the on-duration of the downlink TDM mode;

[0048] a starting time offset of the on-duration of the uplink TDM mode, and a first offset value relative to a starting time offset of the on-duration of the downlink TDM mode;

[0049] a starting time offset of the on-duration of the downlink TDM mode, and a second offset value relative to a starting time offset of the on-duration of the uplink TDM mode.

[0050] In the above embodiments, the TDM mode can be configured in various ways, improving the flexibility of TDM mode transmission, and providing conditions for reducing the transmission resources occupied by the TDM mode.

[0051] In some embodiments of the first aspect, in some embodiments, the receiving the configuration information comprises:

[0052] receiving the configuration information through a broadcast message; or

[0053] receiving the configuration information through a first message.

[0054] In the above embodiments, the terminal can receive the configuration information through various ways such as a broadcast message or a first message, thereby improving the flexibility of receiving the configuration information, and providing conditions for reducing the amount of resources used by the TDM mode transmission and reducing the power consumption of the terminal and the network device.

[0055] In some embodiments of the first aspect, in some embodiments, the receiving the configuration information through the first message comprises:

[0056] The terminal receives the configuration information through different first messages in different states.

[0057] In some embodiments of the first aspect, the state of the terminal includes any of the following:

[0058] An idle state, an inactive state, and a connected state.

[0059] In the above embodiments, the terminal can receive the TDM mode applicable to different states of the terminal through different first messages, improving the flexibility of the TDM mode and providing conditions for improving the performance of the terminal in different terminal states.

[0060] In some embodiments of the first aspect, the configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

[0061] In some embodiments of the first aspect, when the NTN network is in a first state of the TDM mode, the NTN network does not use a first frequency band; and when the NTN network is in a second state of the TDM mode, the NTN network uses a second frequency band in the first frequency band.

[0062] In the above embodiments, the configuration information can also indicate the frequency band information used by the NTN network in different states of the TDM mode, thereby providing a basis for reliable access of the terminal to the TN network and the NTN network, and improving the reliability of the NTN network and the TN network.

[0063] In some embodiments of the first aspect, the configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

[0064] In some embodiments of the first aspect, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0065] The configuration information further indicates that in the first state of the TDM mode, the terminal switches to a first BWP; or

[0066] The configuration information further indicates that in the second state of the TDM mode, the terminal switches to a second BWP.

[0067] One BWP is associated with one TDM mode.

[0068] In some embodiments of the first aspect, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0069] The configuration information further indicates that, in the first state of the TDM mode, the terminal uses a third BWP; or

[0070] The configuration information further indicates that, in the second state of the TDM mode, the terminal uses a fourth BWP.

[0071] One terminal is associated with one TDM mode.

[0072] In the above embodiment, the TDM mode received by the terminal can be associated with one BWP, or can be only associated with the terminal itself, which provides conditions for the terminal to accurately determine the BWP used in different states of the TDM mode, reduces the transmission resource used by the terminal to receive the configuration information, and saves the power consumption of the terminal.

[0073] In some embodiments combined with the first aspect, in some embodiments, the method further includes: performing frequency band switching or BWP switching in the case of state switching of the TDM mode.

[0074] In the above embodiment, the terminal performs frequency band switching or BWP switching when determining that the TDM mode switches states, which ensures that the frequency band used by the terminal is the available frequency band or BWP indicated by the TDM mode, and ensures the reliability of the terminal, because different states of the TDM mode can correspond to different frequency bands or BWPs.

[0075] In some embodiments combined with the first aspect, in some embodiments, the method further includes:

[0076] In the case of performing frequency band switching or BWP switching, stopping or suspending the random access service being performed.

[0077] In the above embodiment, the terminal stops or suspends the random access service being performed when performing frequency band switching or BWP switching, thereby avoiding wasting the power consumption of the terminal.

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

[0079] In the case of completing frequency band switching or BWP switching, reinitiating or resuming the suspended random access service.

[0080] In the above embodiment, the terminal reinitiates or resumes the suspended random access service when completing frequency band switching or BWP switching, thereby reducing the power consumption of the terminal and improving the success rate of RA.

[0081] In some embodiments combined with the first aspect, in some embodiments, the performing frequency band switching or BWP switching in the case of state switching of the TDM mode includes:

[0082] In a case where the BWP in the active state is the same as the BWP corresponding to the state in which the current TDM mode is located, BWP switching is performed when the TDM mode state is switched.

[0083] In a case where the BWP in the active state is the same as the BWP corresponding to the state in which the current TDM mode is located, BWP switching is performed when the TDM mode state is switched.

[0084] In the above embodiment, the terminal determines that the BWP (or frequency band) in the active state is the same as the BWP (or frequency band) corresponding to the state in which the current TDM mode is located, and then performs BWP (or frequency band) switching when the TDM mode state is switched, thereby avoiding power waste caused by meaningless frequency band switching of the terminal.

[0085] In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

[0086] In a case where the downlink signal quality or the uplink power meets the first condition, uplink frequency band switching or uplink BWP switching is not performed; or

[0087] In a case where the downlink signal quality meets the second condition, downlink frequency band switching or downlink BWP switching is not performed.

[0088] In the above embodiment, the terminal does not perform corresponding frequency band (BWP) switching when the downlink signal quality or the uplink power meets the first condition, or the downlink signal quality meets the second condition, thereby avoiding the influence on the communication performance of the terminal due to the failure of frequency band switching.

[0089] In combination with some embodiments of the first aspect, in some embodiments, the first condition includes at least one of:

[0090] The downlink reference signal received power (RSRP) is greater than a first threshold value;

[0091] The downlink reference signal received quality (RSRQ) is greater than a second threshold value;

[0092] The uplink transmission power is less than a third threshold value.

[0093] In combination with some embodiments of the first aspect, in some embodiments, the second condition includes at least one of:

[0094] The downlink reference signal received power (RSRP) is greater than a fourth threshold value;

[0095] The downlink reference signal received quality (RSRQ) is greater than a fifth threshold value.

[0096] In combination with some embodiments of the first aspect, in some embodiments, the receiving configuration information includes:

[0097] receiving the configuration information through a medium access control, MAC, control element, CE; or

[0098] receiving the configuration information through a physical downlink control channel, PDCCH.

[0099] In the above embodiments, the terminal receives the configuration information through a medium access control, MAC, control element, CE or a physical downlink control channel, PDCCH, thereby improving the reliability and flexibility of TDM mode transmission.

[0100] In a second aspect, the embodiments of the present disclosure provide a method for information transmission, the method comprising:

[0101] sending configuration information, the configuration information indicating a time division multiplexing, TDM, mode of a non-terrestrial network, NTN;

[0102] wherein, in different states of the TDM mode of the NTN network, a terminal uses different frequency bands, and the terminal is a terminal accessing the TN network.

[0103] In combination with some embodiments of the second aspect, in some embodiments, the TDM mode includes an uplink TDM mode and a downlink TDM mode.

[0104] In combination with some embodiments of the second aspect, in some embodiments, the time division multiplexing, TDM, mode includes at least one of:

[0105] a cycle of the uplink TDM mode, a duration of an on period, and a starting time offset of the on period;

[0106] a cycle of the downlink TDM mode, a duration of an on period, and a starting time offset of the on period;

[0107] a cycle and a duration of an on period of the uplink and downlink TDM modes;

[0108] a starting time offset of the on period of the uplink TDM mode;

[0109] a starting time offset of the on period of the downlink TDM mode;

[0110] a starting time offset of the on period of the uplink TDM mode, a first offset value relative to a starting time offset of the on period of the downlink TDM mode;

[0111] a starting time offset of the on period of the downlink TDM mode, a second offset value relative to a starting time offset of the on period of the uplink TDM mode.

[0112] In combination with some embodiments of the second aspect, in some embodiments, the sending configuration information includes:

[0113] transmitting the configuration information via a broadcast message; or

[0114] transmitting the configuration information via a first message.

[0115] In some embodiments in combination with the second aspect, transmitting the configuration information via a first message comprises:

[0116] transmitting the configuration information via different first messages in different states of the terminal.

[0117] In some embodiments in combination with the second aspect, the state of the terminal comprises any one of:

[0118] idle state, inactive state, and connected state.

[0119] In some embodiments in combination with the second aspect, the configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

[0120] In some embodiments in combination with the second aspect, the configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

[0121] in a first state of the TDM mode, the NTN network does not use a first frequency band;

[0122] in a second state of the TDM mode, the NTN network uses a second frequency band in the first frequency band.

[0123] In some embodiments in combination with the second aspect, the configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

[0124] In some embodiments in combination with the second aspect, the configuration information further indicates BWP information used by the terminal in different states of the TDM mode comprises:

[0125] the configuration information further indicates that the terminal switches to a first BWP in a first state of the TDM mode; or

[0126] the configuration information further indicates that the terminal switches to a second BWP in a second state of the TDM mode.

[0127] wherein one BWP is associated with one TDM mode.

[0128] In some embodiments of the second aspect, in some embodiments, the configuration information further indicates BWP information used by the terminal in different states of the TDM mode, including:

[0129] The configuration information further indicates that the terminal uses a third BWP in a first state of the TDM mode; or

[0130] The configuration information further indicates that the terminal uses a fourth BWP in a second state of the TDM mode.

[0131] One terminal is associated with one TDM mode.

[0132] In some embodiments of the second aspect, in some embodiments, the sending configuration information includes:

[0133] The configuration information is sent through a medium access control (MAC) control element (CE); or

[0134] The configuration information is sent through a physical downlink control channel (PDCCH).

[0135] In some embodiments of the second aspect, in some embodiments, the method further includes:

[0136] Receiving the TDM mode sent by the NTN network device.

[0137] In some embodiments of the second aspect, in some embodiments, the method further includes:

[0138] Receiving the NTN propagation delay sent by the NTN network device.

[0139] In a third aspect, the embodiments of the present disclosure provide a terminal, which includes a transceiver module and a processing module; wherein the terminal is configured to perform the first aspect and the optional implementation manners of the first aspect.

[0140] In a fourth aspect, the embodiments of the present disclosure provide a network device, which includes a transceiver module and a processing module; wherein the network device is configured to perform the second aspect and the optional implementation manners of the second aspect.

[0141] In a fifth aspect, the embodiments of the present disclosure provide a communication apparatus, which includes one or more processors; wherein the communication apparatus is configured to perform the first aspect and the optional implementation manners of the first aspect.

[0142] In a sixth aspect, the embodiments of the present disclosure provide a communication apparatus, which includes one or more processors; wherein the communication apparatus is configured to perform the second aspect and the optional implementation manners of the second aspect.

[0143] In a seventh aspect, the embodiments of the present disclosure provide a communication system, comprising: a terminal, a network device; wherein the terminal is configured to perform the method described in the first aspect and the optional implementation manners of the first aspect, and the network device is configured to perform the method described in the second aspect and the optional implementation manners of the second aspect.

[0144] In an eighth aspect, the embodiments of the present disclosure provide a storage medium, which stores instructions, when the instructions are executed on a communication device, causing the communication device to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0145] In a ninth aspect, the embodiments of the present disclosure provide a program product, when the program product is executed by a communication device, causing the communication device to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0146] In a tenth aspect, the embodiments of the present disclosure provide a computer program, when the computer program is executed on a computer, causing the computer to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0147] In an eleventh aspect, the embodiments of the present disclosure provide a chip or a chip system. The chip or the chip system comprises processing circuitry configured to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0148] It can be understood that the terminal, the network device, the communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved are referred to the beneficial effects in the corresponding method, which will not be described here.

[0149] The embodiments of the present disclosure provide an information transmission method and device. In some embodiments, the terms of information transmission method, signal processing method, communication method, etc. can be replaced with each other, the terms of signal processing device, information processing device, communication device, etc. can be replaced with each other, and the terms of signal measurement system, information processing system, communication system, etc. can be replaced with each other.

[0150] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing part of the steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, part or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with optional implementation of other embodiments.

[0151] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments are consistent if there is no special description and logical conflict, and can be referred to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0152] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0153] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "the above", "the above", "the above", "this" and the like, can represent "one and only one", and can also represent "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, and can also be understood as plural expression.

[0154] In the embodiments of the present disclosure, "a plurality of" means two or more.

[0155] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0156] In some embodiments, "at least one of A, B", "A and / or B", "in one case A, in another case B", "responsive to case A, responsive to case B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option), in some embodiments, A and B (both A and B are performed).

[0157] In some embodiments, "A or B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option).

[0158] In some embodiments, the prefix words "first", "second", and the like, are used only to distinguish different description objects, and do not limit the position, order, priority, quantity, or content of the description objects, and the description objects are described in the claims or embodiments according to the context, and should not be construed as redundant limitations because of the use of prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified by them are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more, for example, "first device", where the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different; for another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0159] In some embodiments, "including A", "containing A", "for indicating A", "carrying A", can be interpreted as directly carrying A, or indirectly indicating A.

[0160] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0161] In some embodiments, the terms "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above", and the like can be replaced with each other, and the terms "less than", "less than or equal to", "not greater than", "fewer than", "fewer than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below", and the like can be replaced with each other.

[0162] In some embodiments, the apparatuses and devices can be interpreted as physical or virtual, and their names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", and the like.

[0163] In some embodiments, "network" can be interpreted as an apparatus included in the network, for example, an access network device, a core network device, and the like.

[0164] In some embodiments, an “access network device (AN device)” can also be referred to as a “radio access network device (RAN device),” a “base station (BS),” a “radio base station,” a “fixed station,” and in some embodiments can also be understood as a “node,” an “access point,” a “transmission point (TP),” a “reception point (RP),” a “transmission / reception point (TRP),” a “panel,” an “antenna panel,” an “antenna array,” a “cell,” a “macro cell,” a “small cell,” a “femto cell,” a “pico cell,” a “sector,” a “cell group,” a “serving cell,” a “carrier,” a “component carrier,” a “bandwidth part (BWP),” and the like.

[0165] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a Narrow Band-Internet of Things (NB-IoT) device, a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and so on.

[0166] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), and so on), embodiments of the present disclosure can also be applied. In this case, a structure in which a terminal has all or part of the functions of an access network device can also be provided. Further, terms such as "uplink," "downlink," and so on can also be replaced with terms corresponding to inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, and so on can be replaced with a side channel, and an uplink, a downlink, and so on can be replaced with a side link.

[0167] In some embodiments, the terminal can 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 can also be configured to have all or part of the functions of the terminal.

[0168] In some embodiments, the data, information, and the like can be acquired in compliance with the laws and regulations of the country where the terminal is located.

[0169] In some embodiments, the data, information, and the like can be acquired after obtaining the consent of the user.

[0170] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0171] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0172] As shown in FIG. 1A, the communication system 100 includes a terminal 101 and a network device 102.

[0173] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a Narrow Band-Internet of Things (NB-IoT) device, a satellite communication device, a car with communication function, a smart car, a Pad, 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 smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, a RedCap terminal, and the like, but is not limited thereto.

[0174] In some embodiments, the network device 102 is, for example, a node or device that accesses a terminal to a wireless network, and the network device can include at least one of a node such as a satellite or a drone in a signal measurement network, an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a next generation RAN node (NG-RAN node), a node B (NB), a home node B (HNB), a home evolved node B (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 RAN, a Cloud RAN, a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0175] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0176] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, and part of the protocol layer functions are controlled by the CU, and the remaining part or all of the protocol layer functions are distributed in the DU and controlled by the CU, but is not limited thereto.

[0177] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. It can be known by those skilled in the art that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0178] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1A or part of the subjects, but are not limited thereto. The subjects shown in FIG. 1A are illustrative, and the communication system can include all or part of the subjects in FIG. 1A, or other subjects other than those in FIG. 1A. The number and form of each subject is arbitrary, each subject can be physical or virtual, the connection relationship between each subject is illustrative, each subject can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0179] Embodiments of the present disclosure can be applied to a Non-terrestrial Network (NTN), 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 (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Narrow Band-IoT (NB-IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based on them, and the like. Further, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0180] The main purpose of NTN network is to complement the coverage gap of Terrestrial Network (TN). Due to the scarcity of sub-6GHz spectrum, and when NTN network is used to complement the coverage gap of TN, there is a problem of low resource utilization. By controlling 6G NTN to share the same spectrum as 6G TN, the spectrum utilization efficiency can be effectively improved compared to NTN using a dedicated spectrum.

[0181] FIG. 1B is a schematic diagram of a coverage area of an NTN satellite. As shown in FIG. 1B, in the coverage area of a satellite, there are multiple beam footprints. Due to the limited satellite transmit power, the satellite cannot illuminate all beam footprints in the coverage area at the same time, but only a part of the beam footprint (light beam footprint in the figure). Then, through the method of beam hopping, the full coverage of all beam footprints in the range is achieved. For all illuminated beam footprints at a certain time, TN cells outside these beam footprints will not exist. However, for TN cells within the beam footprint, intra-frequency interference will occur.

[0182] The present disclosure provides a method of providing different frequency domain resources for active and inactive periods when a satellite illuminates a certain beam footprint through Frequency Division Multiplexing (FDM), thereby avoiding interference with TN in the range.

[0183] The information transmission method and device provided by the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0184] [According to Rule 91 correction 28.08.2024] FIG. 2A is an interaction diagram of an information transmission method according to an embodiment of the present disclosure. As shown in FIG. 2A, the present embodiment relates to an information transmission method, and the method comprises:

[0185] In step S2101, the TN network device 102 receives the TDM mode sent by the NTN network device.

[0186] In some embodiments, the TN network device 102 can be a TN base station, and the NTN network device can be an NTN base station.

[0187] In some embodiments, the terms “NTN device”, “non-terrestrial network device”, “non-terrestrial network device”, “non-terrestrial communication device”, “non-terrestrial communication device”, “non-terrestrial base station”, “non-terrestrial base station” and the like can be replaced with each other.

[0188] In some embodiments, the terms “terrestrial network”, “terrestrial network”, “terrestrial communication”, “terrestrial communication” and the like can be replaced with each other.

[0189] In some embodiments, since the beam coverage area of the NTN network can be different at different times, the NTN network device can generate a Time Division Multiplexing (TDM) pattern based on its own beam coverage area changes, and then synchronize it to the TN network device.

[0190] In some embodiments, the NTN device can provide the TDM pattern to the TN device through the inter-network device interface or through the core network device.

[0191] In some embodiments, the terms “TDM pattern”, “TDM pattern” and the like can be used to indicate the frequency band information that the terminal 101 accessing the TN network can use in different states (periods) of the TDM pattern, and in some cases, the above-mentioned terms can be replaced with each other.

[0192] In some embodiments, the terminal 101 is a terminal accessing the TN network.

[0193] In some embodiments, the TDM pattern can also be determined by the TN device.

[0194] In some embodiments, the terminal 101 uses different frequency bands when the NTN network is in different states of the TDM pattern.

[0195] In some embodiments, the TDM pattern can include uplink TDM pattern and downlink TDM pattern.

[0196] In some embodiments, when the NTN network is in the first state of the TDM pattern, the terminal uses the first frequency band; when the NTN network is in the second state of the TDM pattern, the terminal uses the frequency band in the first frequency band except for the second frequency band, and the second frequency band is the frequency band used by the terminal accessing the NTN network.

[0197] In some embodiments, the terms “second state of TDM pattern”, “on duration state of TDM pattern”, “ON state of TDM pattern” and the like can be used to indicate the state of the TDM pattern corresponding to the active period of the NTN network.

[0198] In some embodiments, the terms “first state of TDM mode”, “inactive state of TDM mode”, “off state of TDM mode”, and the like, can be used to indicate a state in TDM mode where the NTN network is in an iactive period.

[0199] In some embodiments, the terms “active period”, “active duration”, “active time”, “active time period”, “active time duration”, and the like, can be used interchangeably.

[0200] In some embodiments, the terms “inactive period”, “inactive duration”, “inactive time”, “inactive time period”, “inactive time duration”, and the like, can be used interchangeably.

[0201] In some embodiments, the terms “on”, “on Duration”, and the like, can be used to indicate a second state in TDM mode, i.e., the NTN network is in an active period, or the NTN network is in an active state, or the NTN network is in an available state, and the like, in some cases, the above terms can be used interchangeably.

[0202] In some embodiments, the terms “off”, “inactive”, and the like, can be used to indicate a first state in TDM mode, i.e., the NTN network is in an iactive period, or the NTN network is in an offline state, or the NTN network is in an unavailable state, and the like, in some cases, the above terms can be used interchangeably.

[0203] In some embodiments, since the TN network device needs to determine the timing advance (TA) of the terminal 101 when scheduling the terminal 101, and the TA value is related to the propagation round-trip time (RTT) of the terminal within the beam footprint, the NTN network device 102 can also receive the NTN propagation delay sent by the NTN network device.

[0204] In some embodiments, the NTN propagation delay represents the propagation delay of a terminal in the NTN coverage to the network device or the uplink reference point.

[0205] In some embodiments, the NTN coverage is one or more beam footprints of a satellite.

[0206] In some embodiments, the propagation delay can be a one-way propagation delay or an RTT.

[0207] In some embodiments, the propagation delay can be a maximum one-way propagation delay or an RTT, or a maximum one-way propagation delay difference or a round-trip time difference in the coverage.

[0208] In the above embodiments, the TN network device can receive the propagation delay sent by the NTN network device, thereby providing a condition for the TN network device to accurately schedule the terminal 101.

[0209] In some embodiments, the TN network device can receive the propagation delay sent by the NTN network device through an inter-network device interface or via a core network device.

[0210] In step S2102, the network device 102 sends configuration information to the terminal 101.

[0211] In some embodiments, the network device 102 is a TN network device.

[0212] In some embodiments, the configuration information is used to indicate a time division multiplexing (TDM) mode of the NTN.

[0213] In some embodiments, when the NTN network is in different states of the TDM mode, the terminal 101 accessing the TN network can use different frequency bands.

[0214] In some embodiments, the terms “frequency band”, “spectrum resource”, “frequency domain resource”, “bandwidth”, “bandwidth part (BWP)”, and the like can be replaced with each other.

[0215] In some embodiments, due to the transmission delay between the TN network device and the terminal 101, which can be smaller than the transmission delay between the NTN network device and the terminal 101, in the embodiments of the present disclosure, the TN network device can send the configuration information to the terminal 101.

[0216] In some embodiments, the terminal 101 is a non-terrestrial network (NTN) terminal, and the network device 102 can be a terrestrial network (TN) device or an NTN device.

[0217] In some embodiments, the terminal 101 can receive the uplink TDM mode and the downlink TDM mode through different messages respectively. Alternatively, the terminal 101 can also receive the uplink TDM mode and the downlink TDM mode through one message at the same time.

[0218] In some embodiments, the terminal 101 can receive the configuration information through a broadcast message.

[0219] In some embodiments, the TDM pattern provided to the UE through the system broadcast message is applicable to terminals in any state. For example, the terminal 101 can access the TD network using different frequency bands in different TDM states to perform transmission based on the TDM pattern received through the broadcast message when in the idle state, the inactive state or the connected state.

[0220] In some embodiments, the terminal 101 can further receive the configuration information through the first message.

[0221] In some embodiments, the first message can be a dedicated message for the terminal 101.

[0222] In some embodiments, the terminal 101 can receive the configuration information through different first messages when in different states.

[0223] In some embodiments, the state of the terminal can be the idle state, the inactive state, the connected state, etc.

[0224] In some embodiments, the association between the different states of the terminal and the first message can be agreed upon by the protocol or indicated by the network device 102, and the disclosure does not limit the same.

[0225] In some embodiments, the network device 102 can send the TDM pattern for the connected state, the idle state and the inactive state to the terminal 101 through different first messages respectively.

[0226] In some embodiments, if the network provides the TDM pattern for the idle state and / or the inactive state through the connection release message, the terminal 101 can override the TDM pattern received through the system message using the TDM pattern.

[0227] In some embodiments, the terms “override”, “replace”, “instead”, “take precedence over”, “override”, etc. can be replaced with each other.

[0228] In some embodiments, the terminal 101 can receive the configuration information through a Medium Access Control (MAC) control element (Control Element, CE).

[0229] In the embodiments of the disclosure, the configuration information is received through the MAC layer, thereby improving the reliability of the TDM pattern transmission.

[0230] In some embodiments, the terminal 101 can receive the configuration information through a physical downlink control channel (PDCCH).

[0231] In the embodiments of the present disclosure, by receiving the configuration information through the PDCCH channel, the flexibility of the TDM mode transmission is improved.

[0232] In some embodiments, the TDM mode includes at least one of the following: a cycle of the uplink TDM mode, an on duration duration and an on duration offset; a cycle of the downlink TDM mode, an on duration duration and an on duration offset; a cycle and an on duration duration of the uplink and downlink TDM mode; an on duration offset of the uplink TDM mode; an on duration offset of the downlink TDM mode; an on duration offset of the uplink TDM mode, a first offset value relative to an on duration offset of the downlink TDM mode; an on duration offset of the downlink TDM mode, a second offset value relative to an on duration offset of the uplink TDM mode.

[0233] In some embodiments, the on duration offset can be an offset of the starting time of the on duration of the UE relative to the starting time of the on duration of the network device 102.

[0234] In some embodiments, the terms "on duration duration", "active duration", "active time", "available duration", "available time" and the like can be replaced with each other.

[0235] In some embodiments, the units of the on duration offset, the on duration duration and the cycle can be orthogonal frequency division multiplexing (OFDM) symbols, slots, subframes, milliseconds, seconds and the like, and the present disclosure does not limit the same.

[0236] In some embodiments, the configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

[0237] In some embodiments, in the first state of the TDM mode, the NTN network does not use the first frequency band; in the second state of the TDM mode, the NTN network uses a second frequency band in the first frequency band. Thus, the terminal 101 accessing the TN network can use the first frequency band in the first state of the TDM mode, and use other frequency bands in the first frequency band except the second frequency band in the second state of the TDM mode. Thus, the problem of in-band interference with the NTN network is avoided, and the reliability of communication of the terminal 101 accessing the TN network is improved.

[0238] In some embodiments, the configuration information further indicates Bandwidth Part (BWP) information used by the terminal in different states of the TDM mode.

[0239] In some embodiments, in the configuration information, the bandwidth part (Bandwidth Part, BWP) corresponding to the terminal accessing the TN in the first state of the TDM mode and the BWP corresponding to the terminal accessing the TN in the second state of the TDM mode can be indicated.

[0240] In some embodiments, if the on duration of the TDM mode corresponds to the NTN ON and the off corresponds to the NTN off, the TDM mode can be as shown in FIG. 2B. FIG. 2B is a schematic diagram of a TDM mode according to an embodiment of the present disclosure.

[0241] In FIG. 2B, the active period or on (duration) period of the TDM pattern corresponds to the NTN and TN working (ON) at the same time. Thus, during the NTN ON, the NTN and the TN can use frequency domain resources in a frequency division multiplexing (NTN-TN FDM) manner. During the inactive period or off period of the TDM pattern, only the TN network works. At this time, the TN network can use all frequency domain resources (TN uses all frequency resources), that is, the terminal can access the TN network using all the first frequency band.

[0242] In some embodiments, the active period of the TDM pattern can also correspond to only the TN working, and the inactive period of the TDM pattern can also correspond to only the TN working.

[0243] In some embodiments, the on duration of the TDM pattern can also correspond to the NTN OFF.

[0244] In some embodiments, one BWP is associated with one TDM mode, and the configuration information further indicates that the terminal switches to the first BWP in the first state of the TDM mode; or the configuration information further indicates that the terminal switches to the second BWP in the second state of the TDM mode. In this way, the terminal can perform corresponding BWP switching when the TDM mode state is switched based on the TDM mode.

[0245] In some embodiments, the first frequency band includes the first BWP, and the frequency band other than the second frequency band in the first frequency band includes the second BWP.

[0246] In the embodiments of the present disclosure, if the network device 102 configures one TDM mode for each BWP, the TDM mode needs to indicate the BWP to which the terminal 101 needs to switch in the first state and the second state of the TDM mode. Thus, conditions are provided for the terminal 101 to perform reliable BWP switching.

[0247] In some embodiments, one terminal is associated with one TDM mode, and the configuration information further indicates that the terminal uses the third BWP in the first state of the TDM mode; or the configuration information further indicates that the terminal uses the fourth BWP in the second state of the TDM mode. The terminal can use the corresponding BWP for transmission when in different states of the TDM mode. Thus, the terminal 101 receives the transmission resource used by the TDM mode, and the power consumption of the terminal 101 is saved.

[0248] In some embodiments, the first frequency band includes the third BWP, and the frequency band other than the second frequency band in the first frequency band includes the fourth BWP.

[0249] In some embodiments, the first (second, third, or fourth) BWP includes the first (second, third, or fourth) uplink BWP and the first (second, third, or fourth) downlink BWP.

[0250] In the above embodiments, the TDM mode can be configured in multiple granularities, thereby improving the flexibility of TDM mode configuration and providing conditions for reducing the resource amount used by TDM mode transmission and reducing the power consumption of the terminal and the network device.

[0251] In step S2103, the terminal 101 performs frequency band switching or BWP switching in the case of TDM mode state switching.

[0252] In some embodiments, when the TDM mode is switched from the first state to the second state, the terminal 101 accessing the TN network can be switched from using the first frequency band to using the frequency band other than the second frequency band in the first frequency band, wherein the second frequency band is used by the terminal accessing the NTN network.

[0253] In some embodiments, when the TDM mode is switched from the first state to the second state, the terminal 101 accessing the TN network can be switched from using the first BWP to using the second BWP, where the first BWP is used by the terminal accessing the NTN network in the second state of the TDM mode.

[0254] In some embodiments, when the TDM mode is switched from the first state to the second state, the terminal 101 accessing the TN network can be switched from using the third BWP to using the fourth BWP, where the third BWP is used by the terminal accessing the NTN network in the second state of the TDM mode.

[0255] In some embodiments, when the TDM mode is switched from the second state to the first state, the terminal 101 accessing the TN network can be switched from using the frequency band in the first frequency band except the second frequency band to using the first frequency band.

[0256] In some embodiments, when the TDM mode is switched from the second state to the first state, the terminal 101 accessing the TN network can be switched from using the second BWP to using the first BWP, where the first BWP is used by the terminal accessing the NTN network in the second state of the TDM mode.

[0257] In some embodiments, when the TDM mode is switched from the second state to the first state, the terminal 101 accessing the TN network can be switched from using the fourth BWP to using the third BWP, where the third BWP is used by the terminal accessing the NTN network in the second state of the TDM mode.

[0258] In some embodiments, since different TDM mode states can correspond to different frequency bands (or BWPs), when the terminal 101 determines that the TDM mode state changes, the terminal 101 can perform frequency band switching (or BWP switching) based on the corresponding frequency band (or BWP) in the TDM mode, so as to ensure that the frequency band (or BWP) used by the terminal 101 is the available frequency band (or BWP) indicated by the TDM mode, thereby ensuring the reliability of the terminal 101.

[0259] In some embodiments, since the currently activated frequency band (or BWP) of the terminal 101 and the frequency band (or BWP) corresponding to the current TDM mode state can not be the same when the TDM mode state is switched, at this time, since the frequency band (or BWP) currently used by the terminal 101 can not necessarily be invalid when the TDM mode state is switched, the terminal 101 need not perform switching based on the corresponding frequency band (or BWP) of the TDM, thereby saving the power consumption of the terminal 101.

[0260] That is, the terminal needs to determine that the frequency band (or BWP) in the activated state is the same as the frequency band (or BWP) corresponding to the current TDM mode state before performing BWP switching.

[0261] For example, the on duration state of the TDM pattern configuration corresponds to BWP #1, and the off state corresponds to BWP #2. If the terminal is currently in the on duration period, the activated BWP of the terminal is not BWP #1, but BWP #2 (or BWP #3 or BWP #4), and the terminal does not perform BWP switching when the TDM pattern state is switched. Conversely, if the activated BWP is BWP #1, BWP switching is performed.

[0262] In step S2104, the terminal 101 stops or suspends the ongoing RA service when performing the frequency band switching or BWP switching.

[0263] In some embodiments, since the terminal 101 performs the frequency band switching or BWP switching, the original frequency band or BWP can no longer be available, so as to avoid wasting power consumption, the terminal 101 can stop or suspend the ongoing random access (RA) on the original frequency band or BWP.

[0264] In step S2105, the terminal 101 reinitiates or resumes the suspended random access service after the frequency band switching or BWP switching is completed.

[0265] In some embodiments, if the automatic frequency band switching or BWP switching is DL switching, the terminal 101 can suspend the random access and resume the random access after the switching is completed. By multiplexing the completed RA steps to continue the RA, the duration of the RA process is reduced, and the loss of the terminal 101 in the RA process is saved.

[0266] In some embodiments, if the automatic frequency band switching or BWP switching is UL switching, the terminal 101 can stop the random access and start the random access again after the switching is completed. Since the UL frequency band or BWP has been changed, the terminal 101 needs to reinitiate the RA on the newly switched frequency band or BWP, thereby improving the success probability of the RA.

[0267] In the above embodiments, the terminal 101 can stop or suspend the RA as needed when performing the frequency band switching or BWP switching, and resume or reinitiate the RA after the frequency band switching or BWP switching is completed, thereby reducing the power consumption of the terminal and improving the success probability of the RA.

[0268] In some embodiments, in order to avoid affecting the communication performance of the terminal 101 due to the failure of the frequency band switching or BWP switching, the terminal 101 can also determine whether to perform the frequency band switching or BWP switching according to the current uplink signal or downlink signal state.

[0269] In some embodiments, the terminal 101 can not perform uplink frequency band switching or BWP switching if the downlink signal quality or the uplink power meets a first condition.

[0270] In some embodiments, the first condition comprises at least one of: a downlink reference signal reception power (RSRP) being greater than a first threshold value; a downlink reference signal received quality (RSRQ) being greater than a second threshold value; and an uplink transmission power being less than a third threshold value.

[0271] In some embodiments, the first threshold value, the second threshold value, and the third threshold value can be agreed upon by a protocol or indicated by the network device, and the present disclosure does not limit this.

[0272] In some embodiments, the first threshold value, the second threshold value, and the third threshold value can be the same or different, and the present disclosure does not limit this.

[0273] In the above embodiments, if the downlink signal quality is good, it indicates that the current uplink frequency band or BWP communication state is good, so that the terminal 101 can ignore the TDM mode state and not perform uplink frequency band switching or BWP switching, and continue to use the current uplink frequency band or BWP for communication. Alternatively, if the current uplink transmission power is less than the third threshold value, in order to avoid that the uplink transmission cannot be reliably received by the network device 102, resulting in failure of uplink frequency band switching or BWP switching, the terminal 101 can also ignore the TDM mode state and not perform uplink frequency band switching or BWP switching.

[0274] In some embodiments, the terminal 101 can not perform downlink frequency band switching or BWP switching if the downlink signal quality meets a second condition.

[0275] In some embodiments, the second condition comprises at least one of: a downlink reference signal reception power (RSRP) being greater than a fourth threshold value; and a downlink reference signal received quality (RSRQ) being greater than a fifth threshold value.

[0276] In the above embodiments, if the downlink signal quality is good, it indicates that the current downlink frequency band or BWP communication state is good, so that the terminal 101 can ignore the TDM mode state and not perform downlink frequency band or BWP switching, and continue to use the current downlink frequency band or BWP for communication.

[0277] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2105. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, steps S2102+S2103 can be implemented as an independent embodiment, steps S2103+S2104+S2105 can be implemented as an independent embodiment, and the like, but are not limited thereto.

[0278] In the present embodiment or example, each step can be independent, arbitrarily combined, or the order exchanged, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples, without contradiction.

[0279] FIG. 3A is a flow diagram of an information transmission method according to an embodiment of the present disclosure. As shown in FIG. 3A, the embodiments of the present disclosure relate to an information transmission method, the method is executed by the terminal 101, and the method includes:

[0280] Step S3101, receiving configuration information sent by the network device 102.

[0281] Step S3102, in the case of TDM mode state switching, performing frequency band switching or BWP switching.

[0282] Step S3103, when performing frequency band switching or BWP switching, stopping or suspending the ongoing RA service.

[0283] Step S3104, after the frequency band switching or BWP switching is completed, reinitiating or resuming the suspended random access service.

[0284] [According to Rule 91 Correction 28.08.2024] The optional implementation of steps S3101-S3104 can refer to the optional implementation of steps S2102-S2105 of FIG. 2A and other related parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0285] The communication method related to the embodiments of the present disclosure can include at least one of steps S3101-S3104. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, steps S3101+S3103 can be implemented as an independent embodiment, steps S3102+S3103 can be implemented as an independent embodiment, and the like, but are not limited thereto.

[0286] In the present embodiment or example, each step can be independent, arbitrarily combined, or the order exchanged, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples, without contradiction.

[0287] FIG. 3B is a flow diagram of an information transmission method according to an embodiment of the present disclosure. As shown in FIG. 3B, the embodiment of the present disclosure relates to an information transmission method, the method is performed by the terminal 101, and the method comprises:

[0288] In step S3201, configuration information is received.

[0289] In the active period and the inactive period of the terminal in the TDM mode, different frequency domain resources are used respectively.

[0290] In some embodiments, the method further comprises:

[0291] In the first state of the NTN network in the TDM mode, the terminal uses the first frequency band;

[0292] In the second state of the NTN network in the TDM mode, the terminal uses a frequency band in the first frequency band except for the second frequency band, and the second frequency band is a frequency band used by the terminal accessing the NTN network.

[0293] In some embodiments, the first frequency band is a frequency band configured for the NTN network.

[0294] In some embodiments, the TDM mode comprises an uplink TDM mode and a downlink TDM mode.

[0295] In some embodiments, the TDM mode comprises at least one of:

[0296] a period of the uplink TDM mode, a duration of an on period, and a starting time offset of the on period;

[0297] a period of the downlink TDM mode, a duration of an on period, and a starting time offset of the on period;

[0298] a period and a duration of an on period of the uplink and downlink TDM modes;

[0299] a starting time offset of the on period of the uplink TDM mode;

[0300] a starting time offset of the on period of the downlink TDM mode;

[0301] a first offset value of the starting time offset of the on period of the uplink TDM mode relative to a starting time offset of the on period of the downlink TDM mode;

[0302] a second offset value of the starting time offset of the on period of the downlink TDM mode relative to the starting time offset of the on period of the uplink TDM mode.

[0303] In some embodiments, the receiving configuration information comprises:

[0304] receiving the configuration information through a broadcast message; or

[0305] receiving the configuration information through a first message.

[0306] In some embodiments, the configuration information is received through different first messages in cases that the terminal is in different states.

[0307] In some embodiments, the terminal states include any of the following:

[0308] idle state, inactive state, and connected state.

[0309] In some embodiments, the configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

[0310] In some embodiments, in a first state of the TDM mode, the NTN network does not use a first frequency band;

[0311] In a second state of the TDM mode, the NTN network uses a second frequency band in the first frequency band.

[0312] In some embodiments, the configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

[0313] In some embodiments, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0314] the configuration information further indicates that, in a first state of the TDM mode, the terminal switches to a first BWP; or

[0315] the configuration information further indicates that, in a second state of the TDM mode, the terminal switches to a second BWP;

[0316] wherein one BWP is associated with one TDM mode.

[0317] In some embodiments, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0318] the configuration information further indicates that, in a first state of the TDM mode, the terminal uses a third BWP; or

[0319] the configuration information further indicates that, in a second state of the TDM mode, the terminal uses a fourth BWP;

[0320] wherein one terminal is associated with one TDM mode.

[0321] In some embodiments, the method further comprises:

[0322] In the case of state switching of the TDM mode, frequency band switching or BWP switching is performed.

[0323] In some embodiments, the method further includes:

[0324] In the case of performing frequency band switching or BWP switching, the ongoing random access service is stopped or suspended.

[0325] In some embodiments, the method further includes:

[0326] In the case of completing frequency band switching or BWP switching, the suspended random access service is re-initiated or resumed.

[0327] In some embodiments, in the case of state switching of the TDM mode, frequency band switching or BWP switching is performed, including:

[0328] In the case of the frequency band in the activated state being the same as the frequency band corresponding to the state in which the current TDM mode is located, frequency band switching is performed when the TDM mode state is switched; or,

[0329] In the case of the BWP in the activated state being the same as the BWP corresponding to the state in which the current TDM mode is located, BWP switching is performed when the TDM mode state is switched.

[0330] In some embodiments, the method further includes:

[0331] In the case of the downlink signal quality or the uplink power satisfying a first condition, uplink frequency band switching or uplink BWP switching is not performed; or,

[0332] In the case of the downlink signal quality satisfying a second condition, downlink frequency band switching or downlink BWP switching is not performed.

[0333] In some embodiments, the first condition includes at least one of:

[0334] The downlink reference signal received power RSRP is greater than a first threshold value;

[0335] The downlink reference signal received quality RSRQ is greater than a second threshold value;

[0336] The uplink transmit power is less than a third threshold value.

[0337] In some embodiments, the second condition includes at least one of:

[0338] The downlink reference signal received power RSRP is greater than a fourth threshold value;

[0339] The downlink reference signal received quality RSRQ is greater than a fifth threshold value.

[0340] In some embodiments, the receiving configuration information comprises:

[0341] receiving the configuration information through a medium access control (MAC) control element (CE); or

[0342] receiving the configuration information through a physical downlink control channel (PDCCH).

[0343] [According to Rule 91 correction 28.08.2024] Step S3201 and its optional implementation can refer to the related part of the relevant steps and their optional implementation in FIG. 2A, which will not be repeated here.

[0344] FIG. 4A is a flow diagram of an information transmission method according to an embodiment of the present disclosure. As shown in FIG. 4A, the present embodiment of the present disclosure relates to an information transmission method, which is performed by the network device 102, and the method comprises:

[0345] Step S4101, receiving a TDM mode sent by the NTN network device.

[0346] Step S4102, sending configuration information to the terminal 101.

[0347] [According to Rule 91 correction 28.08.2024] The optional implementation of steps S4101-S4102 can refer to the optional implementation of steps S2101-S2102 in FIG. 2A and other related parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0348] The communication method related to the embodiments of the present disclosure can include at least one of steps S4101-S4102. For example, step S4101 can be implemented as an independent embodiment, step S4102 can be implemented as an independent embodiment, step S4101+S4102 can be implemented as an independent embodiment, and the like, but is not limited thereto.

[0349] In the present embodiment or embodiment, each step can be independently combined or exchanged in order without contradiction, the optional mode or optional example can be combined arbitrarily, and can be combined arbitrarily with any step of other embodiments or other embodiments.

[0350] FIG. 4B is a flow diagram of an information transmission method according to an embodiment of the present disclosure. As shown in FIG. 4B, the present embodiment of the present disclosure relates to an information transmission method, which is performed by the network device 102, and the method comprises:

[0351] Step S4201, sending configuration information.

[0352] The configuration information indicates a time division multiplexing (TDM) mode of the non-terrestrial network (NTN).

[0353] The terminal uses different frequency bands in different states of the TDM mode of the NTN network.

[0354] In some embodiments, the TDM mode includes an uplink TDM mode and a downlink TDM mode.

[0355] In some embodiments, the TDM mode includes at least one of the following:

[0356] The period of the uplink TDM mode, the duration of the on period, and the offset of the start time of the on period;

[0357] The period of the downlink TDM mode, the duration of the on period, and the offset of the start time of the on period;

[0358] The period and the duration of the on period of the uplink and downlink TDM modes;

[0359] The offset of the start time of the on period of the uplink TDM mode;

[0360] The offset of the start time of the on period of the downlink TDM mode;

[0361] The first offset value of the offset of the start time of the on period of the uplink TDM mode relative to the offset of the start time of the on period of the downlink TDM mode;

[0362] The second offset value of the offset of the start time of the on period of the downlink TDM mode relative to the offset of the start time of the on period of the uplink TDM mode.

[0363] In some embodiments, the sending of the configuration information includes:

[0364] The configuration information is sent through a broadcast message; or

[0365] The configuration information is sent through a first message.

[0366] In some embodiments, the sending of the configuration information through the first message includes:

[0367] The configuration information is sent through different first messages in different states of the terminal.

[0368] In some embodiments, the state of the terminal includes any of the following:

[0369] The idle state, the inactive state, and the connected state.

[0370] In some embodiments, the configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

[0371] In some embodiments, in a first state of the TDM mode, the NTN network does not use the first frequency band;

[0372] In a second state of the TDM mode, the NTN network uses a second frequency band in the first frequency band.

[0373] In some embodiments, the configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

[0374] In some embodiments, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0375] The configuration information further indicates that, in the first state of the TDM mode, the terminal switches to a first BWP; or

[0376] The configuration information further indicates that, in the second state of the TDM mode, the terminal switches to a second BWP.

[0377] One BWP is associated with one TDM mode.

[0378] In some embodiments, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0379] The configuration information further indicates that, in the first state of the TDM mode, the terminal uses a third BWP; or

[0380] The configuration information further indicates that, in the second state of the TDM mode, the terminal uses a fourth BWP.

[0381] One terminal is associated with one TDM mode.

[0382] In some embodiments, the method further includes:

[0383] The configuration information is sent through a medium access control (MAC) control element (CE); or

[0384] The configuration information is sent through a physical downlink control channel (PDCCH).

[0385] In some embodiments, the method further includes:

[0386] The TDM mode is received from an NTN network device.

[0387] In some embodiments, the method further includes:

[0388] Receiving the NTN propagation delay sent by the NTN network device.

[0389] The step S4201 and the optional implementation manners thereof can be referred to the related parts in the steps and the optional implementation manners thereof in FIG. 2A, and details are not described herein.

[0390] FIG. 5 is an interaction schematic diagram of an information transmission method according to an embodiment of the present disclosure. As shown in FIG. 5, the method according to the embodiment of the present disclosure is used in the communication system 100, and the method comprises the following steps:

[0391] In step S5101, the network device 102 sends configuration information to the terminal 101.

[0392] The configuration information indicates a time division multiplexing (TDM) pattern of the non-terrestrial network (NTN).

[0393] The terminal uses different frequency bands in different states of the TDM pattern of the NTN network, and the terminal is a terminal accessing a terrestrial network (TN).

[0394] [According to Rule 91, corrected on August 28, 2024] The optional implementation manners of step S5101 can be referred to the steps and the related parts thereof in the above-mentioned embodiment of FIG. 2A.

[0395] In the present embodiment or the present embodiment, each step can be independently combined or exchanged in order without contradiction, the optional manners or the optional examples can be combined arbitrarily, and can be combined with any step of other embodiments or other embodiments.

[0396] The information transmission method provided by the present disclosure is further described below in combination with the following embodiments.

[0397] The terminal of the terrestrial network (TN) receives a time division multiplexing (TDM) pattern configured by a TN cell, and the TN terminal works on different frequency bands in an active period and an inactive period of the TDM pattern, respectively.

[0398] Optionally, different frequency bands can be represented by BWP. As shown in FIG. 2B, the on duration of the TDM pattern corresponds to the Non-terrestrial Network (NTN) ON (or can also correspond to NTN OFF) of FIG. 2B, for example. During the on duration, the User Equipment (UE) UE4 uses the Bandwidth Part (BWP) BWP 3. Since the frequency band corresponding to BWP 4 is occupied by NTN, TN cannot be used. During the pattern off, UE4 can use BWP 4 because NTN is in the OFF period during this period.

[0399] Optionally, the active period or on duration of the TDM pattern corresponds to the simultaneous operation of NTN and TN, or corresponds to the operation of TN only. The inactive period or off period of the TDM pattern corresponds to the simultaneous operation of NTN and TN, or corresponds to the operation of TN only.

[0400] Optionally, the TDM pattern includes TDM patterns configured for uplink (UL) and downlink (DL) respectively.

[0401] Optionally, the TDM pattern configured for UL and DL respectively includes one or more of the following: the period of the TDM pattern configured for UL and DL respectively is configured separately; the on duration is configured separately; the on duration offset is configured separately; the on duration offset of the TDM pattern configured for UL and DL respectively is configured separately, but the period and on duration are shared.

[0402] Optionally, the unit of on duration offset / on duration / period can be Orthogonal Frequency Division Multiplex (OFDM) symbol / slot / subframe / millisecond / second, etc.

[0403] Optionally, the offset configuration value of one of UL or DL can be an offset value relative to the offset configuration value of the other.

[0404] Optionally, the TDM pattern configuration is provided by the NTN base station to the TN base station through an inter-base station interface or via a core network.

[0405] Optionally, the TDM pattern is provided to the UE through system broadcast message or dedicated signaling.

[0406] Optionally, the TDM pattern provided to the UE through system broadcast message is applicable to idle / inactive / connected UE.

[0407] Optionally, the TDM pattern provided to the UE through dedicated message can be applicable to connected UE only, or configured for idle / inactive state.

[0408] Optionally, the network device can configure TDM pattern for connected state and idle / inactive state respectively. If the network device provides TDM pattern for idle / inactive state through connection release message, it overrides the TDM pattern provided by system message.

[0409] Optionally, the NTN base station provides NTN propagation delay information to TN base station through inter-base station interface or via core network.

[0410] Optionally, the propagation delay information characterizes the propagation delay information from UE to base station or uplink reference point within one coverage of NTN.

[0411] Optionally, the coverage is one or more beam footprints of a satellite.

[0412] Optionally, the propagation delay information is one-way propagation delay or Round-Trip Time (RTT). The propagation delay information is maximum one-way propagation delay or RTT, or maximum one-way propagation delay difference or RTT difference within the coverage.

[0413] Optionally, the network indicates the BWP used by inactive (off) and / or active (on duration) when configuring the TDM pattern.

[0414] Optionally, if the network provides TDM pattern per BWP, it only needs to indicate the BWP to which inactive (off) and / or active (on duration) needs to switch.

[0415] Optionally, if the network configures TDM pattern per UE, it needs to indicate the BWP used by inactive (off) and active (on duration) respectively.

[0416] Optionally, the BWP can be differentiated as UL BWP and DL BWP respectively.

[0417] Optionally, when the UE switches the state of the TDM pattern (i.e. inactive (off), active (on duration)), the UE automatically switches the BWP.

[0418] Optionally, when the UE switches to a state of the TDM pattern, it switches to the corresponding BWP of the state of the TDM pattern.

[0419] Optionally, when the UE switches to a state of the UL / DL TDM pattern, it switches to the corresponding UL / DL BWP of the state of the UL / DL TDM pattern.

[0420] Optionally, when the UE performs automatic BWP switching, the UE stops or suspends the ongoing random access on the original BWP.

[0421] Optionally, after the UE completes the automatic BWP switching, it reinitiates or resumes the random access.

[0422] Optionally, if the automatic BWP switching is DL BWP switching, the UE suspends the random access and resumes the random access after the switching is completed.

[0423] Optionally, if the automatic BWP switching is UL BWP switching, the UE stops the random access and resumes the random access after the switching is completed.

[0424] Optionally, the UE only performs BWP switching when the currently activated BWP matches the BWP corresponding to the state of the TDM pattern at the current time.

[0425] Optionally, for example, the BWP corresponding to the on duration state of the TDM pattern is BWP 1, and the BWP corresponding to the off state is BWP 2. If the UE is currently in the on duration, if the activated BWP of the UE is not BWP 1, but BWP 2 / 3 / 4, the UE does not perform BWP switching when the state switches. Conversely, if the activated BWP is BWP 1, BWP switching is performed.

[0426] Optionally, if the TDM pattern is differentiated as uplink and downlink, the corresponding BWP is also differentiated as uplink and downlink.

[0427] Optionally, for UL, if downlink signal quality or uplink power satisfies certain condition, UE ignores the state of TDM pattern, and does not perform automatic UL BWP switching.

[0428] Optionally, the certain condition can include one or more of: downlink RSRP and / or RSRQ of the TN cell is greater than a certain threshold; uplink transmit power of the UE is less than a certain threshold.

[0429] Optionally, the threshold is configured by the network device.

[0430] Optionally, for DL, if downlink signal quality satisfies certain condition, UE ignores the state of TDM pattern, and does not perform automatic DL BWP switching.

[0431] Optionally, the certain condition includes one or more of: downlink RSRP and / or RSRQ of the TN cell is greater than a certain threshold.

[0432] Optionally, the threshold is configured by the network device.

[0433] Optionally, the TDM pattern and / or corresponding BWP can be modified by MAC CE or PDCCH.

[0434] Embodiments of the present disclosure also propose an apparatus for implementing any of the above methods, for example, an apparatus including units or modules for implementing each step performed by the terminal in any of the above methods. For another example, another apparatus is also proposed, including units or modules for implementing each step performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0435] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to realize the functions of any of the above methods or the units or modules of the above apparatus, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of the hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship between the elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the units or modules. All units or modules of the above apparatus can be all implemented in the form of processor calling software, or all implemented in the form of hardware circuit, or part implemented in the form of processor calling software and the remaining part implemented in the form of hardware circuit.

[0436] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuits, and the logical relationship of the hardware circuits is fixed or can be reconfigured. 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 the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all 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), and the like.

[0437] FIG. 6A is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 6A, the terminal 6100 can include at least one of a transceiver module 6101, a processing module 6102, and the like. In some embodiments, the transceiver module 6101 is configured to receive configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN); and the terminal uses different frequency bands in different states of the TDM mode of the NTN, and the terminal is a terminal accessing a terrestrial network (TN).

[0438] In some embodiments, the processing module 6102 is further configured to:

[0439] In a first state of the TDM mode of the NTN, the terminal uses a first frequency band.

[0440] In a second state of the TDM mode of the NTN, the terminal uses a frequency band other than a second frequency band in the first frequency band, and the second frequency band is a frequency band used by a terminal accessing the NTN.

[0441] In some embodiments, the first frequency band is a frequency band configured for a TN network.

[0442] In some embodiments, the TDM mode includes an uplink TDM mode and a downlink TDM mode.

[0443] In some embodiments, the TDM mode includes at least one of:

[0444] a period of the uplink TDM mode, a duration of an on-duration period, and an offset of a start time of the on-duration period;

[0445] a period of the downlink TDM mode, a duration of an on-duration period, and an offset of a start time of the on-duration period;

[0446] a period and a duration of an on-duration period of the uplink and downlink TDM modes;

[0447] an offset of a start time of the on-duration period of the uplink TDM mode;

[0448] an offset of a start time of the on-duration period of the downlink TDM mode;

[0449] an offset of a start time of the on-duration period of the uplink TDM mode relative to an offset of a start time of the on-duration period of the downlink TDM mode;

[0450] an offset of a start time of the on-duration period of the downlink TDM mode relative to an offset of a start time of the on-duration period of the uplink TDM mode.

[0451] In some embodiments, the transceiver 6101 is further configured to:

[0452] receive the configuration information through a broadcast message; or

[0453] receive the configuration information through a first message.

[0454] In some embodiments, the transceiver 6101 is further configured to receive the configuration information through different first messages in different states of the terminal.

[0455] In some embodiments, the state of the terminal includes any of:

[0456] an idle state, an inactive state, and a connected state.

[0457] In some embodiments, the configuration information further indicates frequency band information used by the NTN network in different states of the NTN network in the TDM mode.

[0458] In some embodiments, the NTN network does not use the first frequency band in a first state of the NTN network in the TDM mode;

[0459] In the second state of the TDM mode of the NTN network, the NTN network uses a second frequency band in the first frequency band.

[0460] In some embodiments, the configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

[0461] In some embodiments, the configuration information further indicates BWP information used by the terminal in different states of the TDM mode, including:

[0462] The configuration information further indicates that, in the first state of the TDM mode, the terminal switches to a first BWP; or

[0463] The configuration information further indicates that, in the second state of the TDM mode, the terminal switches to a second BWP.

[0464] One BWP is associated with one TDM mode.

[0465] In some embodiments, the configuration information further indicates BWP information used by the terminal in different states of the TDM mode, including:

[0466] The configuration information further indicates that, in the first state of the TDM mode, the terminal uses a third BWP; or

[0467] The configuration information further indicates that, in the second state of the TDM mode, the terminal uses a fourth BWP.

[0468] One terminal is associated with one TDM mode.

[0469] In some embodiments, the processing module 6102 is further configured to:

[0470] In the case of state switching of the TDM mode, frequency band switching or BWP switching is performed.

[0471] In some embodiments, the processing module 6102 is further configured to:

[0472] In the case of performing frequency band switching or BWP switching, the ongoing random access service is stopped or paused.

[0473] In some embodiments, the processing module 6102 is further configured to:

[0474] In the case where the frequency band in the active state is the same as the frequency band corresponding to the state in which the current TDM mode is located, frequency band switching is performed when the TDM mode state is switched; or

[0475] In the case where the BWP in the active state is the same as the BWP corresponding to the state in which the current TDM mode is located, BWP switching is performed when the TDM mode state is switched.

[0476] In some embodiments, the processing module 6102 is further configured to:

[0477] In a case where the downlink signal quality or the uplink power satisfies a first condition, the uplink frequency band switching or the uplink BWP switching is not performed; or,

[0478] In a case where the downlink signal quality satisfies a second condition, the downlink frequency band switching or the downlink BWP switching is not performed.

[0479] In some embodiments, the first condition comprises at least one of:

[0480] a downlink reference signal received power (RSRP) is greater than a first threshold value;

[0481] a downlink reference signal received quality (RSRQ) is greater than a second threshold value;

[0482] an uplink transmit power is less than a third threshold value.

[0483] In some embodiments, the second condition comprises at least one of:

[0484] a downlink reference signal received power (RSRP) is greater than a fourth threshold value;

[0485] a downlink reference signal received quality (RSRQ) is greater than a fifth threshold value.

[0486] In some embodiments, the transceiver module 6101 is further configured to:

[0487] receive the configuration information through a medium access control (MAC) control element (CE); or,

[0488] receive the configuration information through a physical downlink control channel (PDCCH).

[0489] Optionally, the transceiver module is configured to perform at least one of the communication steps (e.g., receiving and / or transmitting) performed by the terminal in any of the above methods, which will not be described herein.

[0490] Optionally, the processing module is configured to perform at least one of the other steps (e.g., steps S2101, S2103, but not limited thereto) performed by the terminal in any of the above methods, which will not be described herein.

[0491] FIG. 6B is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 6B, the network device 6200 can include at least one of a transceiver module 6201, a processing module 6202, and the like. In some embodiments, the transceiver module 6201 is configured to send configuration information, the configuration information indicating a time division multiplexing, TDM, mode of a non-terrestrial network, NTN, wherein the terminal uses different frequency bands in different states of the NTN network in the TDM mode, and the terminal is a terminal accessing a terrestrial network, TN.

[0492] In some embodiments, the TDM mode includes an uplink TDM mode and a downlink TDM mode.

[0493] In some embodiments, the time division multiplexing, TDM, mode includes at least one of:

[0494] a period of the uplink TDM mode, a duration of an on period, and a starting time offset of the on period;

[0495] a period of the downlink TDM mode, a duration of an on period, and a starting time offset of the on period;

[0496] a period and a duration of an on period of the uplink and downlink TDM modes;

[0497] a starting time offset of the on period of the uplink TDM mode;

[0498] a starting time offset of the on period of the downlink TDM mode;

[0499] a first offset value of the starting time offset of the on period of the uplink TDM mode relative to a starting time offset of the on period of the downlink TDM mode;

[0500] a second offset value of the starting time offset of the on period of the downlink TDM mode relative to the starting time offset of the on period of the uplink TDM mode.

[0501] In some embodiments, the transceiver module 6201 is further configured to:

[0502] send the configuration information through a broadcast message; or

[0503] send the configuration information through a first message.

[0504] In some embodiments, the transceiver module 6201 is further configured to:

[0505] send the configuration information through different first messages in different states of the terminal.

[0506] In some embodiments, the state of the terminal includes any one of:

[0507] Idle state, inactive state, and connected state.

[0508] In some embodiments, the configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

[0509] In some embodiments, in a first state of the TDM mode, the NTN network does not use the first frequency band;

[0510] In a second state of the TDM mode, the NTN network uses a second frequency band in the first frequency band.

[0511] In some embodiments, the configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

[0512] In some embodiments, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0513] The configuration information further indicates that, in the first state of the TDM mode, the terminal switches to a first BWP; or

[0514] The configuration information further indicates that, in the second state of the TDM mode, the terminal switches to a second BWP.

[0515] One BWP is associated with one TDM mode.

[0516] In some embodiments, the configuration information further indicates that the BWP information used by the terminal in different states of the TDM mode includes:

[0517] The configuration information further indicates that, in the first state of the TDM mode, the terminal uses a third BWP; or

[0518] The configuration information further indicates that, in the second state of the TDM mode, the terminal uses a fourth BWP.

[0519] One terminal is associated with one TDM mode.

[0520] In some embodiments, the transceiver 6201 is further configured to:

[0521] The configuration information is transmitted through a medium access control (MAC) control element (CE); or

[0522] The configuration information is transmitted through a physical downlink control channel (PDCCH).

[0523] In some embodiments, the transceiver 6201 is further configured to:

[0524] Receive the TDM mode sent by the NTN network device.

[0525] In some embodiments, the transceiver module 6201 is further configured to:

[0526] receive the NTN propagation delay sent by the NTN network device.

[0527] Optionally, the transceiver module is configured to perform at least one of the communication steps, such as sending and / or receiving, of the network device in any of the above methods, which will not be repeated here.

[0528] Optionally, the processing module is configured to perform at least one of the other steps of the network device in any of the above methods, which will not be repeated here.

[0529] In some embodiments, the transceiver module can include a sending module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0530] In some embodiments, the processing module can be one module or can include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0531] Figure 7A is a structural schematic diagram of a communication device according to an embodiment of the present disclosure. The communication device 7100 can be a network device (such as an access network device, a core network device, etc.), a terminal (such as a user equipment, etc.), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments, and specific reference can be made to the descriptions in the above method embodiments.

[0532] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a special-purpose processor, etc., such as 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 data of programs. The communication device 7100 is configured to execute any of the above methods.

[0533] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memory 7102 can also be outside the communication device 7100.

[0534] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps of transmitting and / or receiving in the above-described methods, and the processor 7101 performs at least one of the other steps.

[0535] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms of transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms of transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms of receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0536] In some embodiments, the communication device 7100 can include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected with the memory 7102, and the interface circuit 7104 can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0537] The communication device 7100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 can not be limited by FIG. 7A. The communication device can be a standalone device or can be part of a larger device. For example, the above-described communication device can be: (1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a Modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0538] FIG. 7B is a structural schematic diagram of a chip according to an embodiment of the present disclosure. For the case where the communication device 7100 can be a chip or a chip system, the structural schematic diagram of the chip 7200 shown in FIG. 7B can be referred to, but is not limited thereto.

[0539] The chip 7200 includes one or more processors 7201, and the chip 7200 is configured to execute any of the above methods.

[0540] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuits 7202 are connected with the memory 7203, and the interface circuits 7202 can be configured to receive signals from the memory 7203 or other devices, and the interface circuits 7202 can be configured to send signals to the memory 7203 or other devices. For example, the interface circuits 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.

[0541] In some embodiments, the interface circuits 7202 perform at least one of the communication steps of sending and / or receiving in the above-described methods, and the processor 7201 performs at least one of the other steps.

[0542] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc. can be replaced by each other.

[0543] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Optionally, all or part of the memories 7203 can be outside the chip 7200.

[0544] The disclosure also proposes a storage medium, and the above-mentioned storage medium stores instructions, and when the above-mentioned instructions run on the communication device 7100, the communication device 7100 performs any one of the above methods. Optionally, the above-mentioned storage medium is an electronic storage medium. Optionally, the above-mentioned storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the above-mentioned storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0545] The disclosure also proposes a program product, and the above-mentioned program product is executed by the communication device 7100, so that the communication device 7100 performs any one of the above methods. Optionally, the above-mentioned program product is a computer program product.

[0546] The disclosure also proposes a computer program, and when it runs on a computer, it makes the computer perform any one of the above methods.

[0547] In the above embodiments, all or part can be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part can be implemented in the form of a computer program product. The above computer program product includes one or more computer programs. When the above computer programs are loaded and executed on a computer, all or part of the above processes or functions are generated according to the embodiments of the present disclosure. The above computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The above computer programs can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another, for example, the above computer programs can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The above computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The above available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (such as a solid state disk (solid state disk, SSD)), etc.

[0548] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Skilled professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0549] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0550] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the above claims.

Claims

1. A method of information transmission, characterized in that, The method is performed by a terminal, and the method comprises: receiving configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN); wherein the terminal uses different frequency bands in different states of the TDM mode of the NTN network, and the terminal is a terminal accessing a terrestrial network (TN).

2. The method of claim 1, wherein, The method further comprises: when the NTN network is in a first state of the TDM mode, the terminal uses a first frequency band; when the NTN network is in a second state of the TDM mode, the terminal uses a frequency band other than a second frequency band in the first frequency band, and the second frequency band is a frequency band used by a terminal accessing the NTN network.

3. The method of claim 1, wherein, The first frequency band is a frequency band configured for the TN network.

4. The method of claim 1, wherein, The TDM mode comprises an uplink TDM mode and a downlink TDM mode.

5. The method according to any one of claims 1 to 4, characterized in that, The TDM mode comprises at least one of the following: a period, an on-duration duration, and an on-duration starting time offset of the uplink TDM mode; a period, an on-duration duration, and an on-duration starting time offset of the downlink TDM mode; a period and an on-duration duration of the uplink and downlink TDM modes; an on-duration starting time offset of the uplink TDM mode; an on-duration starting time offset of the downlink TDM mode; a first offset value of the on-duration starting time offset of the uplink TDM mode relative to the on-duration starting time offset of the downlink TDM mode; a second offset value of the on-duration starting time offset of the downlink TDM mode relative to the on-duration starting time offset of the uplink TDM mode.

6. The method of any one of claims 1-5, wherein, The receiving of the configuration information comprises: receiving the configuration information through a broadcast message; or receiving the configuration information through a first message.

7. The method of claim 6, wherein, The terminal receives the configuration information through different first messages in different states of the terminal.

8. The method of claim 7, wherein, The states of the terminal comprise any one of the following: an idle state, an inactive state, and a connected state.

9. The method of any one of claims 1-8, wherein, The configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

10. The method of claim 9, wherein: when the NTN network is in a first state of the TDM mode, the NTN network does not use the first frequency band; when the NTN network is in a second state of the TDM mode, the NTN network uses a second frequency band in the first frequency band.

11. The method of any one of claims 1-8, wherein, The configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

12. The method of claim 11, wherein, The configuration information further indicating the BWP information used by the terminal in different states of the TDM mode comprises: The configuration information further indicates that, in a first state of the TDM mode, the terminal switches to a first BWP; or The configuration information further indicates that, in a second state of the TDM mode, the terminal switches to a second BWP; wherein one BWP is associated with one TDM mode.

13. The method of claim 11, wherein, The configuration information further indicating the BWP information used by the terminal in different states of the TDM mode comprises: The configuration information further indicates that, in a first state of the TDM mode, the terminal uses a third BWP; or The configuration information further indicates that, in a second state of the TDM mode, the terminal uses a fourth BWP. One terminal is associated with one TDM mode.

14. The method of any one of claims 9-13, wherein, The method further includes: In the case of state switching of the TDM mode, performing frequency band switching or BWP switching.

15. The method of claim 14, wherein, The method further includes: In the case of performing frequency band switching or BWP switching, stopping or suspending the ongoing random access service.

16. The method of claim 14, wherein, The method further includes: In the case of completing frequency band switching or BWP switching, reinitiating or resuming the suspended random access service.

17. The method of any one of claims 14-16, wherein, The case of state switching of the TDM mode includes: In the case of the frequency band in the active state being the same as the frequency band corresponding to the state in which the current TDM mode is located, performing frequency band switching when the TDM mode state switches; or In the case of the BWP in the active state being the same as the BWP corresponding to the state in which the current TDM mode is located, performing BWP switching when the TDM mode state switches.

18. The method of any one of claims 14-17, wherein, The method further includes: In the case of the downlink signal quality or the uplink power satisfying a first condition, not performing uplink frequency band switching or uplink BWP switching; or In the case of the downlink signal quality satisfying a second condition, not performing downlink frequency band switching or downlink BWP switching.

19. The method of claim 18, wherein, The first condition includes at least one of the following: The downlink reference signal received power (RSRP) is greater than a first threshold value; The downlink reference signal received quality (RSRQ) is greater than a second threshold value; The uplink transmission power is less than a third threshold value.

20. The method of claim 18, wherein, The second condition includes at least one of the following: The downlink reference signal received power (RSRP) is greater than a fourth threshold value; The downlink reference signal received quality (RSRQ) is greater than a fifth threshold value.

21. The method of any one of claims 1-20, wherein, The receiving configuration information includes: Receiving the configuration information through a medium access control (MAC) control element (CE); or Receiving the configuration information through a physical downlink control channel (PDCCH).

22. An information transmission method, characterized by, The method performed by a network device includes: Sending configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN); Wherein, in different states of the TDM mode, the terminal uses different frequency bands, and the terminal is a terminal accessing a terrestrial network (TN).

23. The method of claim 22, wherein, The TDM mode includes an uplink TDM mode and a downlink TDM mode.

24. The method of claim 22 or 23, wherein, The time division multiplexing (TDM) mode includes at least one of the following: The period, the duration of the on period, and the starting time offset of the on period of the uplink TDM mode; The period, the duration of the on period, and the starting time offset of the on period of the downlink TDM mode; The period and the duration of the on period of the uplink and downlink TDM modes; The starting time offset of the on period of the uplink TDM mode; The starting time offset of the on period of the downlink TDM mode; The starting time offset of the on period of the uplink TDM mode, and a first offset value relative to the starting time offset of the on period of the downlink TDM mode; A second offset value of an offset of a starting moment of an on period of a downlink TDM mode relative to an offset of a starting moment of an on period of an uplink TDM mode.

25. The method of any one of claims 22-24, wherein, The sending the configuration information comprises: The configuration information is sent through a broadcast message; or The configuration information is sent through a first message.

26. The method of claim 25, wherein, The sending the configuration information through the first message comprises: The configuration information is sent through different first messages in different states of the terminal.

27. The method of claim 26, wherein, The terminal state comprises any one of the following: An idle state, an inactive state, and a connected state.

28. The method of any one of claims 22-27, wherein, The configuration information further indicates frequency band information used by the NTN network in different states of the TDM mode.

29. The method of claim 28, wherein, In a first state of the TDM mode of the NTN network, the NTN network does not use a first frequency band; In a second state of the TDM mode of the NTN network, the NTN network uses a second frequency band in the first frequency band.

30. The method of any one of claims 22-29, wherein, The configuration information further indicates bandwidth part (BWP) information used by the terminal in different states of the TDM mode.

31. The method of claim 30, wherein, The configuration information further indicates the BWP information used by the terminal in different states of the TDM mode comprises: The configuration information further indicates that, in a first state of the TDM mode, the terminal switches to a first BWP; or The configuration information further indicates that, in a second state of the TDM mode, the terminal switches to a second BWP; One BWP is associated with one TDM mode.

32. The method of claim 30, wherein, The configuration information further indicates the BWP information used by the terminal in different states of the TDM mode comprises: The configuration information further indicates that, in a first state of the TDM mode, the terminal uses a third BWP; or The configuration information further indicates that, in a second state of the TDM mode, the terminal uses a fourth BWP; One terminal is associated with one TDM mode.

33. The method of any one of claims 22-32, wherein, The sending the configuration information comprises: The configuration information is sent through a medium access control (MAC) control element (CE); or The configuration information is sent through a physical downlink control channel (PDCCH).

34. The method of any one of claims 22-33, wherein, The method further comprises: Receiving the TDM mode sent by the NTN network device.

35. The method of any one of claims 22-34, wherein, The method further comprises: Receiving NTN propagation delay sent by the NTN network device.

36. A terminal, characterized by The terminal comprises: A transceiver module configured to receive configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN); In different states of the TDM mode of the NTN network, the terminal uses different frequency bands, and the terminal is a terminal accessing a terrestrial network (TN).

37. A network device, comprising: The network device comprises: A transceiver module configured to send configuration information, the configuration information indicating a time division multiplexing (TDM) mode of a non-terrestrial network (NTN); In different states of the TDM mode of the NTN network, the terminal uses different frequency bands, and the terminal is a terminal accessing a terrestrial network (TN).

38. A communications device, characterized by The communication apparatus comprises: One or more processors; The terminal is configured to implement the model training method in any one of claims 1-21, and the network device is configured to implement the information transmission method in any one of claims 22-35.

39. A communication system, characterized by The terminal is configured to implement the model training method in any one of claims 1-21, and the network device is configured to implement the information transmission method in any one of claims 22-35.

40. A storage medium, the storage medium storing instructions, wherein, The instructions, when running on the communication device, cause the communication device to perform the information transmission method in any one of claims 1-21 or 22-35.

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