Communication method, and terminal, apparatus, system, and storage medium

Abstract

The present disclosure relates to a communication method, and a terminal, an apparatus, a system, and a storage medium. The method comprises: receiving auxiliary information sent by a network device, wherein the auxiliary information is used for a terminal to perform uplink synchronization before waking up a network device in an energy-saving state in a non-terrestrial network (NTN). In the method provided in the present disclosure, by means of auxiliary information reception, a terminal acquires auxiliary information issued by a network device for uplink synchronization, so that in an NTN communication scenario, the terminal can perform uplink synchronization on the basis of the auxiliary information and then send uplink information, thereby improving the accuracy of communication between the terminal and the network device.

Description

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

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

[0002] In network energy saving (NES), network devices can achieve energy conservation by aperiodically transmitting channels or signals, or by reducing the frequency of periodic transmissions. In non-terrestrial networks (NTNs), the uplink transmission method of terminals differs from that in terrestrial networks. The impact of NES on terminals in NTN scenarios needs to be explored.

[0003] Summary of the Invention

[0004] Embodiments of the present disclosure provide a communication method, terminal, device, system, and storage medium.

[0005] In a first aspect, an embodiment of the present disclosure provides a communication method, performed by a terminal, the method comprising:

[0006] Auxiliary information sent by a network device is received, where the auxiliary information is used by the terminal to perform uplink synchronization before waking up a network device in a power-saving state in a non-terrestrial network NTN.

[0007] In a second aspect, an embodiment of the present disclosure provides a communication method, performed by a network device, the method comprising:

[0008] Auxiliary information is sent to the terminal, where the auxiliary information is used for the terminal to perform uplink synchronization before waking up a network device in a power-saving state in a non-terrestrial network NTN.

[0009] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0010] The transceiver module is used to receive auxiliary information sent by the network device, where the auxiliary information is used by the terminal to perform uplink synchronization before waking up the network device in the energy-saving state in the non-terrestrial network NTN.

[0011] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0012] The transceiver module is used to send auxiliary information to the terminal, where the auxiliary information is used for the terminal to perform uplink synchronization before waking up a network device in an energy-saving state in a non-terrestrial network NTN.

[0013] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0014] one or more processors;

[0015] The terminal is used to execute the method described in the first aspect.

[0016] In a sixth aspect, an embodiment of the present disclosure provides a network device, including:

[0017] one or more processors;

[0018] The network device is used to execute the method described in the second aspect.

[0019] In a seventh aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a network device, wherein:

[0020] The terminal is configured to implement the method according to the first aspect;

[0021] The network device is configured to implement the method described in the second aspect.

[0022] In an eighth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:

[0023] When the instruction is executed on a communication device, the communication device is caused to execute the method according to the first aspect or the second aspect.

[0024] In the embodiment of the present disclosure, the terminal receives auxiliary information to obtain auxiliary information for uplink synchronization sent by the network device, so that in the NTN communication scenario, the terminal can perform uplink synchronization based on the auxiliary information and then send uplink information, thereby improving the accuracy of communication between the terminal and the network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0026] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0027] FIG2a and FIG2b are exemplary interaction diagrams of a method provided according to an embodiment of the present disclosure;

[0028] FIG2c is a schematic diagram of different beam coverage areas provided according to an embodiment of the present disclosure;

[0029] FIG2d is a schematic diagram of monitoring SI provided according to an embodiment of the present disclosure;

[0030] 3a to 3b are exemplary flowcharts of a method according to an embodiment of the present disclosure;

[0031] 4a and 4b are exemplary flowcharts of a method according to an embodiment of the present disclosure;

[0032] FIG5a is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

[0033] FIG5b is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

[0034] FIG6a is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0035] FIG6 b is a schematic diagram of a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] Embodiments of the present disclosure provide a communication method, terminal, device, system, and storage medium.

[0037] In a first aspect, an embodiment of the present disclosure provides a communication method, performed by a terminal, the method comprising:

[0038] Auxiliary information sent by a network device is received, where the auxiliary information is used by the terminal to perform uplink synchronization before waking up a network device in a power-saving state in a non-terrestrial network NTN.

[0039] In the above embodiment, the terminal receives auxiliary information to obtain auxiliary information for uplink synchronization sent by the network device, so that in the NTN communication scenario, the terminal can perform uplink synchronization based on the auxiliary information and then send uplink information, thereby improving the accuracy of communication between the terminal and the network device.

[0040] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0041] First configuration information sent by a network device is received, wherein the first configuration information is used to configure time-frequency resources of a wake-up signal (WUS), and the WUS is used to wake up a network device in an energy-saving state in an NTN.

[0042] In the above embodiment, the terminal receives the first configuration information to obtain the WUS time-frequency resources sent by the network device, and can send WUS according to the WUES time-frequency resources, so as to wake up the network device in the energy-saving state in time.

[0043] In conjunction with the embodiments of the first aspect, in some embodiments, receiving first configuration information sent by a network device includes:

[0044] The first configuration information is received, where the first configuration information includes auxiliary information.

[0045] In the above embodiment, the auxiliary information is carried by the first configuration information, and the terminal can perform uplink synchronization and send a WUS based on the first configuration information, which is conducive to saving signaling resources.

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

[0047] If the timer corresponding to the auxiliary information times out, valid auxiliary information is obtained by receiving a system information block (SIB19) sent by the network device.

[0048] In the above embodiment, when the auxiliary information obtained by the terminal through the first configuration information is invalid, the terminal needs to obtain new auxiliary information by receiving SIB19 to ensure that the terminal can always perform uplink synchronization based on valid auxiliary information.

[0049] In conjunction with the embodiments of the first aspect, in some embodiments, SIB19 is periodically transmitted when the network device is in an energy-saving state. Alternatively, when a network cell is in an energy-saving state, that is, in a cell where the network device is in an energy-saving state, SIB19 is periodically transmitted.

[0050] In the above embodiment, when the network device is in the energy-saving state, SIB19 is still sent normally, and the terminal can obtain effective auxiliary information by monitoring SIB19.

[0051] In conjunction with the embodiments of the first aspect, in some embodiments, SIB19 is sent on demand when the network device is in an energy-saving state. Alternatively, when a network cell is in an energy-saving state, that is, in a cell where the network device is in an energy-saving state, SIB19 is sent on demand.

[0052] In the above embodiment, if the network device is in an energy-saving state and SIB19 is sent on demand, the terminal needs to adjust the timing of obtaining SIB19.

[0053] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0054] Before the timer corresponding to the auxiliary information times out, a WUS is sent to the network device to request new valid auxiliary information. Alternatively, the invalid auxiliary information is recorded as the first auxiliary information, and the new valid auxiliary information requested by the WUS is recorded as the second auxiliary information.

[0055] In the above embodiment, if SIB19 is sent on demand, the terminal may wake up the network device by sending WUS to request new valid assistance information.

[0056] In conjunction with the embodiments of the first aspect, in some embodiments, receiving auxiliary information sent by a network device includes:

[0057] Receive SIB19 sent by the network device, where the SIB19 includes auxiliary information; wherein the SIB19 is sent periodically when the network device is in an energy-saving state.

[0058] In the above embodiment, the auxiliary information may be sent via SIB19. When the network device is in an energy-saving state, the terminal may also obtain valid auxiliary information by monitoring SIB19.

[0059] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0060] Receive second configuration information sent by the network device, where the second configuration information is used to configure time and frequency resources of SIB19.

[0061] In the above embodiment, the terminal obtains the time-frequency resources of SIB19 based on the second configuration information sent by the network device, so that the terminal can monitor SIB19 at an appropriate position.

[0062] In conjunction with the embodiments of the first aspect, in some embodiments, the second configuration information satisfies at least one of the following:

[0063] The second configuration information is received by the terminal before entering the Radio Resource Control (RRC) idle state;

[0064] The second configuration information is received by the terminal before entering the RRC inactive state;

[0065] The second configuration information is received when the terminal is in an RRC connected state;

[0066] The second configuration information is sent by the network device before entering the energy-saving state.

[0067] In the above embodiment, the terminal may obtain the second configuration information at an appropriate time, so that when the network device is in an energy-saving state, the terminal may also know the location of monitoring SIB19 based on the valid second configuration information.

[0068] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0069] Before the timer corresponding to the last saved auxiliary information times out, send a WUS to the network device, where the WUS is used to request valid auxiliary information;

[0070] The last auxiliary information is included in SIB19, which is sent on demand when the network device is in an energy-saving state, and the first configuration information does not include the auxiliary information.

[0071] In the above embodiment, before the existing auxiliary information becomes invalid, the terminal can promptly send a WUS to wake up the network device to send SIB19 to request valid auxiliary information.

[0072] In conjunction with the embodiments of the first aspect, in some embodiments, SIB19 satisfies at least one of the following:

[0073] SIB19 is received by the terminal before entering the RRC idle state;

[0074] SIB19 is received by the terminal before entering the RRC inactive state;

[0075] SIB19 is received when the terminal is in the RRC connected state;

[0076] SIB19 is sent by the network device before entering the energy-saving state.

[0077] In the above embodiment, the SIB19 carrying the last auxiliary information may be obtained by the terminal before the network device enters the energy-saving state.

[0078] In conjunction with the embodiments of the first aspect, in some embodiments, the first configuration information satisfies at least one of the following:

[0079] The first configuration information is received by the terminal before entering the RRC idle state;

[0080] The first configuration information is received by the terminal before entering the RRC inactive state;

[0081] The first configuration information is received when the terminal is in an RRC connected state;

[0082] The first configuration information is sent by the network device before entering the energy-saving state.

[0083] In conjunction with the embodiments of the first aspect, in some embodiments, the auxiliary information includes at least one of the following:

[0084] Satellite ephemeris data;

[0085] Common timing advance compensation TA parameter information (Common TA parameters);

[0086] Epoch time when public TA parameter information and satellite ephemeris information take effect;

[0087] Validity duration of public TA parameter information and satellite ephemeris information (ntn-UlSyncValidityDuration);

[0088] Polarization information.

[0089] In the above embodiment, in the NTN, the terminal needs to perform uplink synchronization according to the auxiliary information, so as to reasonably send uplink information such as WUS after uplink synchronization, so that the network device can accurately receive the uplink information.

[0090] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0091] A WUS is sent to the network device according to the first configuration information and the valid auxiliary information.

[0092] In the above embodiment, when the network device is in the energy-saving state, the terminal wakes up the network device in a timely manner according to its own business needs based on the information sent by the network device to ensure communication efficiency.

[0093] In one embodiment, when the network device is in an energy-saving state, the terminal sends WUS to the network device in a timely manner based on the information sent by the network device and according to its own business needs. After receiving the WUS information, the network device returns to a non-energy-saving state and periodically sends information such as SIB1 to ensure that the UE can access the network normally and communicate.

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

[0095] The capability information is sent to the network device, where the capability information is used to indicate whether the terminal supports sending a WUS when the network device is in an energy-saving state.

[0096] In the above embodiment, the terminal reports the capability information to the network device to determine whether it supports the capability of waking up the network device, so that the network device can adaptively adjust the timing of sending the information.

[0097] In some embodiments, the method further comprises:

[0098] Send capability information to the network device, where the capability information indicates whether the terminal supports sending WUS when the NTN network device is in energy-saving state; or

[0099] The capability information is sent to the network device, where the capability information is used to indicate whether the terminal supports obtaining uplink synchronization auxiliary information when the network device is in an energy-saving state.

[0100] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0101] Receive third configuration information sent by the network device, where the third configuration information is used to indicate a cell in which the network device enters an energy-saving state and terminal behaviors supported when the cell is in the energy-saving state.

[0102] In the above embodiment, based on the third configuration information, the terminal can obtain the cell indicated by the network device when the network device is in the energy-saving state, so that the terminal can perform the behavior allowed or instructed by the network device in the corresponding cell.

[0103] In some embodiments, the method includes: receiving third configuration information sent by a network device, the third configuration information being used to indicate a cell in which the network device has entered an energy-saving state. In this embodiment, based on the third configuration information, the terminal can obtain the cell indicated by the network device as being in an energy-saving state or as entering an energy-saving state at a specific time. The terminal determines the behavior of the cell in the energy-saving state based on predefined network device behavior, so that the terminal can perform correct transmission and reception behavior on the corresponding cell.

[0104] In a second aspect, an embodiment of the present disclosure provides a communication method, performed by a network device, the method comprising:

[0105] Auxiliary information is sent to the terminal, where the auxiliary information is used for the terminal to perform uplink synchronization before waking up a network device in a power-saving state in a non-terrestrial network NTN.

[0106] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0107] First configuration information is sent to the terminal, where the first configuration information is used to configure time and frequency resources of a WUS, and the WUS is used to wake up a network device in an energy-saving state in the NTN.

[0108] In conjunction with the embodiments of the second aspect, in some embodiments, sending auxiliary information to the terminal includes:

[0109] The first configuration information is sent to the terminal, where the first configuration information includes auxiliary information.

[0110] In combination with the embodiments of the second aspect, in some embodiments, SIB19 is periodically sent when the network device or network cell is in an energy-saving state, and SIB19 contains valid auxiliary information.

[0111] In combination with the embodiments of the second aspect, in some embodiments, SIB19 is sent on demand when the network device or network cell is in an energy-saving state, and SIB19 contains valid auxiliary information.

[0112] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0113] The WUS sent by the receiving terminal is used to request new valid auxiliary information;

[0114] Send SIB19 to the terminal.

[0115] In conjunction with the embodiments of the second aspect, in some embodiments, sending auxiliary information to the terminal includes:

[0116] Send SIB19 to the terminal, where SIB19 includes auxiliary information;

[0117] Among them, SIB19 is sent periodically when the network device is in energy-saving state.

[0118] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0119] Send second configuration information to the terminal, where the second configuration information is used to configure the time and frequency resources of SIB19.

[0120] In conjunction with the embodiments of the second aspect, in some embodiments, the second configuration information satisfies at least one of the following:

[0121] The second configuration information is received by the terminal before entering the RRC idle state;

[0122] The second configuration information is received by the terminal before entering the RRC inactive state;

[0123] The second configuration information is received when the terminal is in an RRC connected state;

[0124] The second configuration information is sent by the network device before entering the energy-saving state.

[0125] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0126] The WUS sent by the receiving terminal is used to request valid auxiliary information;

[0127] Among them, WUS is sent by the terminal before the timer corresponding to the last saved auxiliary information expires. The last auxiliary information is included in SIB19. SIB19 is sent on demand when the network device is in an energy-saving state, and the first configuration information does not include auxiliary information.

[0128] In conjunction with the embodiments of the second aspect, in some embodiments, SIB19 satisfies at least one of the following:

[0129] SIB19 is received by the terminal before entering the RRC idle state;

[0130] SIB19 is received by the terminal before entering the RRC inactive state;

[0131] SIB19 is received when the terminal is in the RRC connected state;

[0132] SIB19 is sent by the network device before entering the energy-saving state.

[0133] In conjunction with the embodiments of the second aspect, in some embodiments, the first configuration information satisfies at least one of the following:

[0134] The first configuration information is received by the terminal before entering the RRC idle state;

[0135] The first configuration information is received by the terminal before entering the RRC inactive state;

[0136] The first configuration information is received when the terminal is in an RRC connected state;

[0137] The first configuration information is sent by the network device before entering the energy-saving state.

[0138] In conjunction with the embodiments of the second aspect, in some embodiments, the auxiliary information includes at least one of the following:

[0139] Satellite ephemeris information;

[0140] Public TA parameter information;

[0141] The effective start time of public TA parameter information and satellite ephemeris information;

[0142] Validity period of public TA parameter information and satellite ephemeris information;

[0143] Polarization information.

[0144] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0145] Receive the WUS sent by the terminal.

[0146] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0147] Receive capability information sent by the terminal, where the capability information indicates whether the terminal supports sending WUS when the network device is in energy-saving state. Or,

[0148] Receive capability information sent by the terminal, which indicates whether the terminal supports sending WUS when the NTN network device is in energy-saving state. Or

[0149] The capability information sent by the receiving terminal is used to indicate whether the terminal supports obtaining uplink synchronization auxiliary information when the network device is in an energy-saving state.

[0150] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0151] Sending third configuration information to the terminal, the third configuration information is used to indicate the cell in which the network device enters the energy-saving state, and the terminal behavior supported when the cell is in the energy-saving state. Or,

[0152] The third configuration information is used to indicate a cell in which the network device enters an energy-saving state.

[0153] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0154] The transceiver module is used to receive auxiliary information sent by the network device, where the auxiliary information is used by the terminal to perform uplink synchronization before waking up the network device in the energy-saving state in the non-terrestrial network NTN.

[0155] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0156] The transceiver module is used to send auxiliary information to the terminal, where the auxiliary information is used for the terminal to perform uplink synchronization before waking up a network device in an energy-saving state in a non-terrestrial network NTN.

[0157] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0158] one or more processors;

[0159] The terminal is used to execute the method described in the first aspect.

[0160] In a sixth aspect, an embodiment of the present disclosure provides a network device, including:

[0161] one or more processors;

[0162] The network device is used to execute the method described in the second aspect.

[0163] In a seventh aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a network device, wherein:

[0164] The terminal is configured to implement the method according to the first aspect;

[0165] The network device is configured to implement the method described in the second aspect.

[0166] In an eighth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:

[0167] When the instruction is executed on a communication device, the communication device is caused to execute the method according to the first aspect or the second aspect.

[0168] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0169] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0170] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0171] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0172] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0173] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0174] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0175] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0176] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0177] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0178] In some embodiments, "at least one of A and B", "A and / or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to the situation: In some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0179] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0180] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0181] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0182] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0183] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0184] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0185] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0186] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0187] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0188] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0189] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0190] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0191] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0192] As shown in FIG1 , a communication system 100 may be an NTN system, and the communication system 100 may include a terminal 101 , a ground base station 102 , and a satellite base station (or simply satellite) 103 .

[0193] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0194] In some embodiments, the ground base station 102 may be an access network device for connecting to a core network device.

[0195] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0196] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0197] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0198] In some embodiments, a core network device may be a single device comprising one or more network elements, or may be a plurality of devices or a group of devices, each comprising all or part of one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0199] In some embodiments, the satellite base station 103 may also be referred to as a satellite, and the satellite 103 may be a satellite with different orbits, altitudes, and coverage areas.

[0200] In some embodiments, in an NTN, terminal 101 can connect to ground base station 102 via satellite 103. Ground base station 102 transmits wireless resources to terminal 101 via satellite 103. For example, satellite 103 transmits signals in transparent transmission mode. The link between terminal 101 and satellite 103 is a service link, and the link between satellite 103 and ground base station 102 is a feeder link.

[0201] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0202] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG. 1 , or a part of the main body thereof, but are not limited thereto.

[0203] The entities shown in Figure 1 are examples. The communication system may include all or part of the entities in Figure 1, and may also include other entities outside of Figure 1. The number and form of the entities are arbitrary. The connection relationship between the entities is an example. The entities may be connected or disconnected, and the connection may be in any manner, which may be direct or indirect, and may be wired or wireless.

[0204] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0205] In the disclosed embodiments, in an NTN system, unlike a terrestrial network, if terminal 101 lacks valid uplink synchronization assistance information, it will be unable to perform uplink time and frequency synchronization. However, in an NTN, terminal 101 must perform uplink compensation before sending uplink signals. Therefore, terminal 101 cannot perform uplink synchronization based on valid assistance information, nor can it accurately send uplink signals such as WUS. Therefore, when network devices are in an energy-saving state (also known as an NES state), the issue of how terminals can wake up network devices needs to be addressed. Furthermore, for NTN WUS configuration, time and frequency domain compensation are important considerations.

[0206] FIG2a is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2a, a communication method according to an embodiment of the present disclosure includes:

[0207] Step S2101: The network device sends first configuration information to the terminal 101.

[0208] Optionally, the network device may be a ground base station 102 or a satellite base station 103 .

[0209] In some embodiments, the first configuration information is used to configure the time-frequency resources of the WUS, which may also be referred to as WUS configuration.

[0210] Optionally, the network device may send the WUS configuration by sending RRC signaling.

[0211] Optionally, the first configuration information may include at least one of the following: a time-frequency position of sending a WUS signal, a WUS signal type, and a WUS signal format.

[0212] The WUS signal type may include, for example, a WUS transmitted via a physical random access channel (PRACH) or a WUS transmitted via a physical uplink control channel (PUCCH). The WUS signal format may be, for example, PUCCH format x.

[0213] Optionally, the WUS signal may be PRACH, PUCCH or a group of special sequences.

[0214] In some embodiments, when the network device is in a normal state or a non-energy-saving state, signals are sent as configured, such as periodically sending SIB1. If the network device enters the NES state, some periodically sent signals may no longer be sent periodically. For example, SIB1 may be sent on-demand, that is, only when there is a demand from terminal 101.

[0215] Optionally, the network device may enter the NES state when the terminal 101 enters the RRC idle state (idle) or the RRC inactive state (inactive).

[0216] In some embodiments, the first configuration information satisfies at least one of the following:

[0217] The first configuration information is received by the terminal 101 before entering the RRC idle state;

[0218] The first configuration information is received by the terminal 101 before entering the RRC inactive state;

[0219] The first configuration information is received when the terminal 101 is in the RRC connected state;

[0220] The first configuration information is sent by the network device before entering the energy-saving state.

[0221] For example, the terminal 101 obtains the first configuration information when entering the RRC connected state.

[0222] In some embodiments, the terminal 101 receives the first configuration information to obtain the WUS configuration.

[0223] Step S2102 : The network device sends second configuration information to the terminal 101 .

[0224] Optionally, the second configuration information is used to configure the time-frequency resources of SIB19, such as the sending time-frequency position or sending period of SIB19.

[0225] For example, the second configuration information includes the time-frequency resource location information of the physical downlink control channel (PDCCH) of the scheduling SIB19, such as the system information time window (SI window) where the PDCCH of the scheduling SIB19 is located, the SI radio network temporary identity (RNTI Radio Network Temporary Identity, RNTI)

[0226] Optionally, the network device may send the second configuration information via RRC signaling. For example, the network device sends the first configuration information and the second configuration information via the same RRC signaling, or the network device sends the first configuration information and the second configuration information via different RRC signaling.

[0227] Optionally, when the network device is in the NES state, SIB19 may continue to be sent periodically according to the second configuration information.

[0228] In some embodiments, the second configuration information satisfies at least one of the following:

[0229] The second configuration information is received by the terminal 101 before entering the RRC idle state;

[0230] The second configuration information is received by the terminal 101 before entering the RRC inactive state;

[0231] The second configuration information is received when the terminal 101 is in the RRC connected state;

[0232] The second configuration information is sent by the network device before entering the energy-saving state.

[0233] For example, the terminal 101 obtains the second configuration information when entering the RRC connected state.

[0234] In some embodiments, the terminal 101 receives the second configuration information to obtain the SIB19 configuration.

[0235] Step S2103 : The network device sends third configuration information to the terminal 101 .

[0236] Optionally, the third configuration information is used to indicate a cell in which the network device enters the energy-saving state, and / or terminal behaviors supported when the cell is in the energy-saving state.

[0237] Optionally, based on the third configuration information, the network device may indicate to the terminal 101 that the network device enters the NES state in a certain cell, or enables the NES function of a certain cell, while the network device may maintain a normal state in other cells.

[0238] Optionally, the network device may indicate, through the third configuration information, the behaviors supported by the network device in the cell in the NES state, such as supporting the reception of WUS in the cell, or supporting the periodic transmission of SIB19, etc. The receiving and sending behaviors of the network device when a cell is in the energy-saving state may be predefined by a protocol.

[0239] Optionally, the terminal behavior corresponding to the sending and receiving behavior of the network device may include: sending WUS in the cell, receiving SIB19 periodically as configured, etc.

[0240] In some embodiments, the third configuration information may be included in the first configuration information or the second configuration information, or the first configuration information or the second configuration information may be included in the third configuration information. For example, step S2103 may be omitted, and the first configuration information may be used to indicate the cell and / or terminal behavior of the network device entering the energy-saving state. In addition, the order in which the first configuration information, the second configuration information, and the third configuration information are sent may be adjusted as needed. For example, they may be sent simultaneously or in a specific order, and this disclosure does not impose any restrictions on this.

[0241] In some embodiments, the terminal 101 receives the third configuration information to obtain the cell in which the network device is in the NES state and / or the behaviors supported when the cell is in the NES state.

[0242] Step S2104: Terminal 101 sends capability information to the network device.

[0243] Optionally, the capability information is used to indicate whether the terminal supports sending a WUS when the network device is in an energy-saving state.

[0244] In some embodiments, the network device receives the capability information and may send the first configuration information when the terminal 101 supports the capability, or enter the NES state when the terminal 101 supports the capability.

[0245] Optionally, the order of step S2104 is for illustration only; for example, it may be performed before the network device sends the first configuration information. If terminal 101 supports the capability, the network device may send the first configuration information normally; if terminal 101 does not support the capability, the network device may not send the first configuration information. Alternatively, if terminal 101 does not support the capability, the network device may send the first configuration information, but does not expect the terminal to respond, and the terminal may ignore the first configuration information.

[0246] Optionally, step S2104 may be omitted, for example, if the terminal 101 supports this capability by default.

[0247] In step S2105, the terminal 101 enters the RRC idle state or the RRC inactive state, and the network device enters the NES state.

[0248] Optionally, the network device may enter the energy-saving state when the terminal 101 enters the RRC idle state (idle) or the RRC inactive state (inactive).

[0249] In some embodiments, in conjunction with the description of the preceding embodiments, when a network device enters the NES state, at least one of the following information may stop being periodically transmitted: SIB1 information, other SIB information (other SIB), periodic Channel State Information Resource Signal (CSI-RS), and semi-static CSI-RS. The above information may be periodically transmitted according to its corresponding configuration, but will no longer be periodically transmitted after the network device enters the NES state.

[0250] Optionally, the signal that is no longer sent periodically may be sent on demand. For example, SIB1 may be sent on demand, that is, it is sent only when there is a demand from the terminal 101.

[0251] In some embodiments, if the network device leaves the NES state or is in the normal state, at least one of the following information resumes to be periodically sent: SIB1 information, other SIB information, periodic CSI-RS, and semi-static CSI-RS.

[0252] In some embodiments, if terminal 101 has a need, such as a service request, it can wake up a network device in the NES state by sending a WUS, thereby leaving the NES state. In an NTN, terminal 101 must perform uplink time and / or frequency domain compensation before sending uplink signals. This means that terminal 101 must perform uplink synchronization and uplink compensation before sending a WUS. Uplink synchronization includes synchronization of uplink time and frequency. Terminal 101 must perform uplink time and frequency synchronization based on valid auxiliary information.

[0253] Optionally, the auxiliary information includes at least one of the following:

[0254] Satellite ephemeris information;

[0255] Common TA parameter information;

[0256] The effective start time of public TA parameter information and satellite ephemeris information;

[0257] Validity period of public TA parameter information and satellite ephemeris information;

[0258] Polarization information.

[0259] The Common TA parameter information may include common TA, common TA first-order change rate (common TA drift), and common TA second-order change rate (common TA drift variation). Common TA information is used to pre-compensate for two-way transmission delay between the uplink time synchronization reference point and the satellite.

[0260] The validity duration of the satellite ephemeris information and / or the Common TA information may be indicated by the validity duration (ntn-UlSyncValidityDuration), and the validity start time of the satellite ephemeris information and / or the Common TA information may be indicated by the time (Epoch time).

[0261] The polarization information includes an uplink polarization direction and / or a downlink polarization direction.

[0262] In some optional examples, the auxiliary information also includes an offset constant used for uplink synchronization, such as Koffset and / or Kmac.

[0263] Optionally, the assistance information may be valid or invalid based on the validity duration. Whether the assistance information is valid may be determined based on whether a timer corresponding to the assistance information has expired. If the timer has expired, the corresponding assistance information is invalid; if the timer has not expired, the assistance information is valid or has not expired. The timer may be a timer corresponding to the validity duration described above, i.e., used to indicate the validity duration of the assistance information. For example, the timer corresponding to the assistance information may include a timer corresponding to ntn-UlSyncValidityDuration.

[0264] In some embodiments, the manner of sending the auxiliary information may refer to the descriptions of different embodiments, such as the implementation of step S2106 or step S2201.

[0265] Step S2106 , the network device sends SIB19 to the terminal 101 .

[0266] In some embodiments, the network device sends SIB19 according to the second configuration information.

[0267] In one example, the auxiliary information is included in SIB19, that is, the auxiliary information is included in SIB19, and the WUS configuration does not include the auxiliary information. In this example, when the network device is in the energy-saving state, SIB19 can still be sent according to the second configuration information. For example, SIB19 can be sent periodically.

[0268] In another example, the auxiliary information is included in SIB19, that is, SIB19 includes the auxiliary information, and the WUS configuration does not include the auxiliary information. When the network device is in an energy-saving state, SIB19 is sent on-demand.

[0269] In an alternative embodiment of this example, if the auxiliary information is included in SIB19, and SIB19 is sent on demand when the network device is in an energy-saving state, it may affect the terminal 101 from obtaining valid auxiliary information. Therefore, the terminal 101 does not want or expect this configuration to occur, or the network device does not allow this configuration. In this alternative embodiment, the terminal 101 may not be able to continue to obtain auxiliary information when the network device is in an energy-saving state, so the network device is restricted from performing this configuration.

[0270] In another alternative embodiment of this example, the auxiliary information is included in SIB19, and SIB19 is sent on demand when the network device is in an energy-saving state. The terminal 101 can save the auxiliary information last obtained from SIB19, and the SIB19 containing the last auxiliary information satisfies at least one of the following:

[0271] The SIB19 containing the last assistance information is received by the terminal before entering the RRC idle state;

[0272] The SIB19 containing the last assistance information is received by the terminal before entering the RRC inactive state;

[0273] The SIB19 containing the last auxiliary information is received when the terminal is in the RRC connected state;

[0274] The SIB19 containing the last assistance information is sent by the network device before entering the energy-saving state.

[0275] In this alternative embodiment, before the last auxiliary information stored by the terminal 101 expires, step S2108 or steps S2107 to S2108 are executed to wake up the network device and request valid auxiliary information through WUS. In other words, the timeout or expiration of the auxiliary information is also one of the events that triggers the terminal 101 to send WUS.

[0276] Optionally, whether the auxiliary information is valid may refer to the determination method of the aforementioned embodiment.

[0277] In some embodiments, the auxiliary information is used by the terminal to perform uplink synchronization before the terminal wakes up a network device in an energy-saving state in the NTN. Optionally, the auxiliary information may also be referred to as uplink synchronization auxiliary information.

[0278] Optionally, the content of the auxiliary information may refer to the description of the above embodiment.

[0279] In step S2107, the terminal 101 obtains the auxiliary information in SIB19 through the synchronization signal block (SSB) and the second configuration information.

[0280] In some embodiments, when the network device is in the NES state, if terminal 101 needs to initiate access (e.g., when a service request is received), terminal 101 may assume that the second configuration information remains unchanged, or that the transmission position of the PDCCH scheduling SIB19 in the second configuration information remains unchanged. Terminal 101 monitors SIB19 according to the original configuration of SIB19 to obtain the auxiliary information in SIB19.

[0281] In some embodiments, network devices in an NTN can perform beam hopping, achieving wide coverage by combining narrow beam coverage with beam hopping. During beam hopping, refer to Figure 2c, which illustrates the topography of the Earth's surface, showing continents and the surrounding oceans. In actual implementations, some beam coverage areas may be ocean, while others may be land, resulting in uneven traffic.

[0282] Optionally, the terminal 101 needs to obtain downlink synchronization through the beam measurement result of the SSB, such as determining a beam with better transmission quality or reception quality of the network device, and receiving SIB19 based on the beam. The beam can be identified by an SSB index (SSB#index).

[0283] Optionally, the terminal 101 blindly detects the PDCCH that schedules SIB19 based on the beam based on the previous second configuration information and SSB#index, and demodulates the PDSCH carrying SIB19 according to the scheduling information such as PDCCH, thereby obtaining SIB19 and reading the auxiliary information in SIB19.

[0284] In some embodiments, the process of the terminal 101 acquiring SI is described below in conjunction with FIG. 2d :

[0285] SIB1 can be broadcast periodically on the downlink shared channel (DL-SCH) or unicast on the DL-SCH. Other SIBs can be broadcast periodically on the DL-SCH, on-demand on the DL-SCH, or unicast on the DL-SCH.

[0286] Optionally, terminal 101 first obtains the location of the PDCCH for SIB1 from the Master Information Block (MIB), namely the location of the type0-PDCCH Common Search Space (CSS). Terminal 101 needs to first search the type0-PDCCH CSS for the PDCCH that schedules the SIB1NR PDSCH: PDCCH-ConfigSIB1. PDCCH-ConfigSIB1 has a total of 8 bits, with the upper 4 bits defining the configuration of corset#0 and the lower 4 bits defining the monitoring timing configuration of the CSS.

[0287] Optionally, terminal 101 blindly detects the PDCCH that schedules SIB1 and demodulates SIB 1. SIB1 contains the SI message to which other SIBs are mapped, and scheduling information for periodically broadcast SIBs and on-demand SIBs. Scheduling information includes, for example, the time position of the corresponding SIB, such as the SI window.

[0288] An SI message can contain one or more SIBs. SIBs with the same period can be sent in the same SI message, with each SI message associated with an SI time window. The time window position x satisfies the following: x = (n-1) * w, where w is the length of the SI message time window and n is the order value in SIB1 that determines each SI message.

[0289] A network device can send the corresponding SI message multiple times within an SI time window. In periodic transmission, the SI Window lengths of different SI messages are the same, and the periods can be configured individually. SI messages are also carried on the PDSCH channel.

[0290] As shown in Figure 2d, taking the SI time window containing 10 time slots as an example, the time window is divided into several time periods, and a PDCCH listening opportunity is set in each time period, and SI is sent in ascending order of SSB index. For example, the parameter configuration is ssb-PositionslnBurst=1101'->ssb#0,ssb#1,ssb#3,N=3pdcch period=1slot. In each time period, the network device sends the SI PDCCH corresponding to different SSBs in the order of SSB#0, SSB#1 and SSB#3. For example, taking the first time period (slot0~slot2) as an example, in slot0, the network device sends the SI PDCCH of SSB#0, in slot1, it sends the SI PDCCH of SSB#1, and in slot2, it sends the SI PDCCH of SSB#3. In the next time period, SI is still sent in this SSB index order.

[0291] Optionally, within the SI time window, the terminal 101 may selectively monitor the SI-RNTI according to the current SSB to obtain actual SI until the SI is acquired or the current SI window ends. For example, in an embodiment of the present disclosure, based on the determined SSB#index, the SI corresponding to the SSB#index is monitored at the corresponding position, such as SIB19, and the auxiliary information in SIB19 is read.

[0292] Step S2108: The terminal 101 sends a WUS to the network device according to the first configuration information and the valid auxiliary information.

[0293] Optionally, the WUS is used to wake up a network device in a power-saving state.

[0294] Optionally, in combination with the description of the foregoing embodiment, the terminal 101 may determine whether the auxiliary information is still valid based on whether the timer has expired; and may obtain valid auxiliary information by monitoring SIB19.

[0295] If the auxiliary information is still valid, there is no need to monitor SIB19 to obtain the auxiliary information. If the auxiliary information is invalid, SIB19 can be monitored to obtain valid auxiliary information and the auxiliary information can be updated.

[0296] In some embodiments, the terminal 101 performs uplink synchronization based on the auxiliary information, and after the uplink synchronization, sends the WUS at the configured time-frequency position according to the first configuration information.

[0297] Optionally, the terminal 101 may send a WUS when access is required or when there is a service demand.

[0298] Optionally, the terminal 101 supports sending a WUS to wake up a network device in the NES state.

[0299] In some embodiments, after receiving the WUS, the network device may end the NES state and send downlink information or downlink signals normally.

[0300] In some embodiments, when SIB19 is sent on demand, WUS is also used to request valid auxiliary information. After receiving WUS, the network device ends the NES state and sends SIB19 containing valid auxiliary information to the terminal 101.

[0301] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", and "field" can be used interchangeably.

[0302] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0303] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0304] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0305] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0306] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0307] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0308] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0309] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0310] The method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2108, such as the method including step S2106.

[0311] In some embodiments, at least one of steps S2101 to S2105 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0312] In some embodiments, at least one of steps S2107 to S2108 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0313] In some embodiments, steps S2101 to S2103 may be executed in an interchangeable order, or may be executed synchronously through the same signaling.

[0314] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 a .

[0315] FIG2b is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2b, a communication method according to an embodiment of the present disclosure includes:

[0316] Step S2201: The network device sends first configuration information to the terminal 101.

[0317] In some embodiments, the implementation of step S2201 can refer to the optional implementation of step S2101 and will not be repeated here.

[0318] In some embodiments, the first configuration information includes auxiliary information.

[0319] Optionally, the terminal 101 receives the first configuration information to obtain WUS configuration and auxiliary information.

[0320] Optionally, the auxiliary information is used by the terminal to perform uplink synchronization before the terminal wakes up the network device in the NTN in the energy-saving state. Optionally, the auxiliary information can also be called uplink synchronization auxiliary information. The content of the auxiliary information can be found in the description of the above embodiment.

[0321] In the first example, SIB19 is sent periodically when the network device is in an energy-saving state. In this example, SIB1 is sent on demand when the network device is in an energy-saving state, and SIB19 is sent periodically according to the configuration, carrying auxiliary information through the first configuration information.

[0322] In this example, the first configuration information containing the auxiliary information may satisfy any of the following conditions:

[0323] The first configuration information is received by the terminal 101 before entering the RRC idle state;

[0324] The first configuration information is received by the terminal 101 before entering the RRC inactive state;

[0325] The first configuration information is received when the terminal 101 is in an RRC connected state;

[0326] The first configuration information is sent by the network device before entering the energy-saving state.

[0327] For example, in this example, the first configuration information is sent before the network device enters the energy-saving state. When the network device is in the energy-saving state, the network device periodically sends SIB19 according to the configuration of SIB19, and does not send the first configuration information or SIB1 to achieve energy saving.

[0328] In this example, if the auxiliary information in the first configuration information is valid, the terminal 101 may execute step S2206. If the auxiliary information in the first configuration information is invalid, the terminal 101 may execute step S2207.

[0329] In the second example, SIB19 is sent on demand when the network device is in the energy-saving state. In this example, when the network device is in the energy-saving state, SIB19 may be sent based on a request from the terminal 101, as described in the related embodiment in step S2206.

[0330] Step S2202 : The network device sends second configuration information to the terminal 101 .

[0331] In some embodiments, the implementation of step S2202 can refer to the optional implementation of step S2102 and will not be repeated here.

[0332] Step S2203 : The network device sends third configuration information to the terminal 101 .

[0333] In some embodiments, the implementation of step S2203 can refer to the optional implementation of step S2103 and will not be repeated here.

[0334] Step S2204: Terminal 101 sends capability information to the network device.

[0335] In some embodiments, the implementation of step S2204 can refer to the optional implementation of step S2104 and will not be repeated here.

[0336] In step S2205, the terminal 101 enters the RRC idle state or the RRC inactive state, and the network device enters the NES state.

[0337] In some embodiments, the implementation of step S2205 can refer to the optional implementation of step S2105 and will not be repeated here.

[0338] Step S2206: The auxiliary information in the first configuration information is still valid, and the terminal 101 sends a WUS to the network device according to the first configuration information.

[0339] In some embodiments, in combination with the description of the foregoing embodiments, the terminal 101 may determine whether the assistance information is still valid based on whether the timer has expired.

[0340] Optionally, the terminal 101 may send a WUS when access needs to be initiated, such as when a service request is made.

[0341] In a first example, when SIB19 keeps being sent periodically when the network device is in the energy-saving state, the WUS is used to wake up the network device in the energy-saving state.

[0342] In the second example, when SIB19 is sent on demand when the network device is in a power-saving state, step S2206 may be performed before the auxiliary information becomes invalid, and the WUS is used to wake up the network device to obtain valid auxiliary information.

[0343] In this example, terminal 101 sends a WUS before the auxiliary information expires to reacquire SIB1 and / or SIB19 information. That is, regardless of whether terminal 101 has access requirements, it must send a WUS before the auxiliary information expires to obtain valid uplink synchronization assistance information. Alternatively, the expiration or failure of the auxiliary information can also trigger terminal 101 to send a WUS.

[0344] Step S2207: the auxiliary information in the first configuration information becomes invalid, and valid auxiliary information is obtained by receiving SIB19 sent by the network device.

[0345] Optionally, when the auxiliary information in the first configuration information is invalid, the terminal 101 may assume that the sending position of SIB19 configured in the second configuration information remains unchanged, and re-acquire valid auxiliary information through SIB19.

[0346] In some embodiments, the implementation of step S2207 or subsequent methods can refer to the implementation of steps S2106 to S2108, and will not be repeated here.

[0347] The method involved in the embodiment of the present disclosure may include at least one of steps S2201 to S2207, such as the method including step S2201.

[0348] In some embodiments, at least one of steps S2202 to S2207 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0349] In some embodiments, steps S2201 to S2203 may be executed in an interchangeable order, or may be executed synchronously through the same signaling.

[0350] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 b .

[0351] FIG3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3a, a communication method according to an embodiment of the present disclosure is performed by terminal 101 and includes:

[0352] Step S3101: Obtain first configuration information.

[0353] In some embodiments, the implementation of step S3101 can refer to the optional implementation of step S2101 and will not be repeated here.

[0354] In some embodiments, the implementation of step S3101 can refer to the optional implementation of step S2201 and will not be repeated here.

[0355] Step S3102: Obtain second configuration information.

[0356] In some embodiments, the implementation of step S3102 can refer to the optional implementation of step S2102 and will not be repeated here.

[0357] Step S3103: Obtain third configuration information.

[0358] In some embodiments, the implementation of step S3103 can refer to the optional implementation of step S2103 and will not be repeated here.

[0359] Step S3104: Send capability information.

[0360] In some embodiments, the implementation of step S3104 can refer to the optional implementation of step S2104 and will not be repeated here.

[0361] Step S3105: Send a WUS according to the first configuration information and valid auxiliary information.

[0362] In some embodiments, the implementation of step S3105 can refer to the optional implementation of steps S2105 to S2108, which will not be repeated here.

[0363] In some embodiments, the implementation of step S3105 can refer to the optional implementation of steps S2205 to S2206, which will not be repeated here.

[0364] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 a .

[0365] FIG3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3b, a communication method according to an embodiment of the present disclosure is performed by terminal 101 and includes:

[0366] Step S3201: Receive auxiliary information sent by a network device.

[0367] Optionally, before the terminal wakes up a network device in a power-saving state in a non-terrestrial network NTN, the auxiliary information is used for the terminal to perform uplink synchronization.

[0368] In some embodiments, the implementation of step S3201 may refer to the implementation of steps S2101 to S2108 in FIG. 2 a .

[0369] In some embodiments, the implementation of step S3201 may refer to the implementation of steps S2201 to S2207 in FIG. 2 b .

[0370] In some embodiments, the method further comprises:

[0371] First configuration information sent by a network device is received, wherein the first configuration information is used to configure time-frequency resources of a wake-up signal WUS, where the WUS is used to wake up a network device in an energy-saving state in the NTN.

[0372] In some embodiments, receiving the auxiliary information sent by the network device includes receiving the first configuration information, where the first configuration information includes the auxiliary information.

[0373] In some embodiments, the method further comprises:

[0374] If the timer corresponding to the auxiliary information times out, valid auxiliary information is obtained by receiving a system information block SIB19 sent by the network device.

[0375] In some embodiments, SIB19 is sent periodically when the network device is in a power-saving state.

[0376] In some embodiments, SIB19 is sent on demand when the network device is in a power-saving state.

[0377] In some embodiments, the method further comprises:

[0378] Before the timer corresponding to the auxiliary information times out, a WUS is sent to the network device, where the WUS is used to request valid auxiliary information.

[0379] In some embodiments, receiving auxiliary information sent by a network device includes:

[0380] Receive SIB19 sent by the network device, where SIB19 includes auxiliary information;

[0381] Among them, SIB19 is sent periodically when the network device is in energy-saving state.

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

[0383] Receive second configuration information sent by the network device, where the second configuration information is used to configure time and frequency resources of SIB19.

[0384] In some embodiments, the second configuration information satisfies at least one of the following:

[0385] The second configuration information is received by the terminal before entering the radio resource control RRC idle state;

[0386] The second configuration information is received by the terminal before entering the RRC inactive state;

[0387] The second configuration information is received when the terminal is in an RRC connected state;

[0388] The second configuration information is sent by the network device before entering the energy-saving state.

[0389] In some embodiments, the method further comprises:

[0390] Before the timer corresponding to the last saved auxiliary information times out, send a WUS to the network device, where the WUS is used to request valid auxiliary information;

[0391] The last auxiliary information is included in SIB19, which is sent on demand when the network device is in an energy-saving state, and the first configuration information does not include the auxiliary information.

[0392] In some embodiments, SIB19 satisfies at least one of the following:

[0393] SIB19 is received by the terminal before entering the RRC idle state;

[0394] SIB19 is received by the terminal before entering the RRC inactive state;

[0395] SIB19 is received when the terminal is in the RRC connected state;

[0396] SIB19 is sent by the network device before entering the energy-saving state.

[0397] In some embodiments, the first configuration information satisfies at least one of the following:

[0398] The first configuration information is received by the terminal before entering the RRC idle state;

[0399] The first configuration information is received by the terminal before entering the RRC inactive state;

[0400] The first configuration information is received when the terminal is in an RRC connected state;

[0401] The first configuration information is sent by the network device before entering the energy-saving state.

[0402] In some embodiments, the auxiliary information includes at least one of the following:

[0403] Satellite ephemeris information;

[0404] Common TA parameter information;

[0405] The effective start time of public TA parameter information and satellite ephemeris information;

[0406] Validity period of public TA parameter information and satellite ephemeris information;

[0407] Polarization information.

[0408] In some embodiments, the method further comprises:

[0409] A WUS is sent to the network device according to the first configuration information and the valid auxiliary information.

[0410] In some embodiments, the method further comprises:

[0411] The capability information is sent to the network device, where the capability information is used to indicate whether the terminal supports sending a WUS when the network device is in an energy-saving state.

[0412] In some embodiments, the method further comprises:

[0413] Receive third configuration information sent by the network device, where the third configuration information is used to indicate a cell in which the network device enters an energy-saving state and terminal behaviors supported when the cell is in the energy-saving state.

[0414] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 b .

[0415] FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a , a communication method according to an embodiment of the present disclosure is performed by a network device and includes:

[0416] Step S4101: Send first configuration information.

[0417] In some embodiments, the implementation of step S4101 can refer to the optional implementation of step S2101 and will not be repeated here.

[0418] In some embodiments, the implementation of step S4101 can refer to the optional implementation of step S2201 and will not be repeated here.

[0419] Step S4102: Send second configuration information.

[0420] In some embodiments, the implementation of step S4102 can refer to the optional implementation of step S2102 and will not be repeated here.

[0421] Step S4103: Send third configuration information.

[0422] In some embodiments, the implementation of step S4103 can refer to the optional implementation of step S2103 and will not be repeated here.

[0423] Step S4104: Acquire capability information.

[0424] In some embodiments, the implementation of step S4104 can refer to the optional implementation of step S2104 and will not be repeated here.

[0425] Step S4105, receive WUS.

[0426] In some embodiments, the implementation of step S4105 can refer to the optional implementation of steps S2105 to S2108, which will not be repeated here.

[0427] In some embodiments, the implementation of step S4105 can refer to the optional implementation of steps S2205 to S2206, which will not be repeated here.

[0428] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 a .

[0429] FIG4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3b , a communication method according to an embodiment of the present disclosure is performed by terminal 101 and includes:

[0430] Step S4201: Send auxiliary information to the terminal.

[0431] Optionally, before the terminal wakes up a network device in a power-saving state in a non-terrestrial network NTN, the auxiliary information is used for the terminal to perform uplink synchronization.

[0432] In some embodiments, the implementation of step S4201 may refer to the implementation of steps S2101 to S2108 in FIG. 2 a .

[0433] In some embodiments, the implementation of step S4201 may refer to the implementation of steps S2201 to S2207 in FIG. 2 b .

[0434] In some embodiments, the method further comprises:

[0435] First configuration information is sent to the terminal, where the first configuration information is used to configure time and frequency resources of a WUS, and the WUS is used to wake up a network device in an energy-saving state in the NTN.

[0436] In some embodiments, sending auxiliary information to a terminal includes:

[0437] The first configuration information is sent to the terminal, where the first configuration information includes auxiliary information.

[0438] In some embodiments, SIB19 is sent periodically when the network device is in an energy-saving state, and SIB19 includes valid auxiliary information.

[0439] In some embodiments, SIB19 is sent on demand when the network device is in an energy-saving state, and SIB19 includes valid auxiliary information.

[0440] In some embodiments, the method further comprises:

[0441] The WUS sent by the receiving terminal is used to request valid auxiliary information;

[0442] Send SIB19 to the terminal.

[0443] In some embodiments, sending auxiliary information to a terminal includes:

[0444] Send SIB19 to the terminal, where SIB19 includes auxiliary information;

[0445] Among them, SIB19 is sent periodically when the network device is in energy-saving state.

[0446] In some embodiments, the method further comprises:

[0447] Send second configuration information to the terminal, where the second configuration information is used to configure the time and frequency resources of SIB19.

[0448] In some embodiments, the second configuration information satisfies at least one of the following:

[0449] The second configuration information is received by the terminal before entering the RRC idle state;

[0450] The second configuration information is received by the terminal before entering the RRC inactive state;

[0451] The second configuration information is received when the terminal is in an RRC connected state;

[0452] The second configuration information is sent by the network device before entering the energy-saving state.

[0453] In some embodiments, the method further comprises:

[0454] The WUS sent by the receiving terminal is used to request valid auxiliary information;

[0455] Among them, WUS is sent by the terminal before the timer corresponding to the last saved auxiliary information expires. The last auxiliary information is included in SIB19. SIB19 is sent on demand when the network device is in an energy-saving state, and the first configuration information does not include auxiliary information.

[0456] In some embodiments, SIB19 satisfies at least one of the following:

[0457] SIB19 is received by the terminal before entering the RRC idle state;

[0458] SIB19 is received by the terminal before entering the RRC inactive state;

[0459] SIB19 is received when the terminal is in the RRC connected state;

[0460] SIB19 is sent by the network device before entering the energy-saving state.

[0461] In some embodiments, the first configuration information satisfies at least one of the following:

[0462] The first configuration information is received by the terminal before entering the RRC idle state;

[0463] The first configuration information is received by the terminal before entering the RRC inactive state;

[0464] The first configuration information is received when the terminal is in an RRC connected state;

[0465] The first configuration information is sent by the network device before entering the energy-saving state.

[0466] In some embodiments, the auxiliary information includes at least one of the following:

[0467] Satellite ephemeris information;

[0468] Common TA parameter information;

[0469] The effective start time of public TA parameter information and satellite ephemeris information;

[0470] Validity period of public TA parameter information and satellite ephemeris information;

[0471] In some embodiments, the method further comprises:

[0472] The WUS sent by the receiving terminal is used to wake up the network device in the energy-saving state.

[0473] In some embodiments, the method further comprises:

[0474] The capability information sent by the terminal is received, where the capability information is used to indicate whether the terminal supports sending a WUS when the network device is in an energy-saving state.

[0475] In some embodiments, the method further comprises:

[0476] Sending third configuration information to the terminal, where the third configuration information is used to indicate a cell in which the network device enters the energy-saving state and terminal behaviors supported when the cell is in the energy-saving state.

[0477] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 b .

[0478] In the method of the disclosed embodiment, a UE receives a WUS (wake-up signal) configuration from a base station. The base station instructs the UE to enter the NES state. The UE uses the WUS signal to wake up the cell, thereby restoring the base station from the NES state to normal. The UE sends the WUS using uplink synchronization assistance information.

[0479] Optionally, when the cell enters the NES state, at least SIB1 is sent on-demand;

[0480] Optionally, in normal cell state, at least SIB1 is sent periodically.

[0481] Optionally, consider the following examples:

[0482] Example 1:

[0483] SIB1 is on-demand, and SIB19 is still sent according to the previous configuration. The WUS configuration does not include uplink synchronization assistance information.

[0484] Among them, SIB19 contains uplink synchronization auxiliary information

[0485] The SIB19-related configuration is configured by the base station to the UE before the UE enters the idle or inactive state and before the network enters the NES state; in other words, the configuration information obtained by the UE in the connected state. This configuration information includes at least one of the following: the time-frequency resource location information of the PDCCH scheduling SIB19 (such as the SI window where the PDCCH scheduling SIB19 is located) and SI-RNTI information.

[0486] The WUS configuration is configured by the base station to the UE before the UE enters the idle or inactive state and before the network enters the NES state; or the UE obtains the configuration information in the connected state. The WUS signal can be a PRACH or PUCCH or a set of special sequences, which is not limited in this embodiment.

[0487] This example may include the following steps: Step 1 to Step 5:

[0488] Step 1: The UE enters the idle or inactive state, and the gNB enters the NES state.

[0489] Step 2: The UE wants to initiate access (e.g., a service request). The UE assumes that the PDCCH transmission configuration for scheduling SIB19 remains unchanged.

[0490] Step 3: UE obtains downlink synchronization through SSB;

[0491] Step 4: The UE uses the previous SIB19 PDCCH configuration and SSB#index to blindly detect the PDCCH that schedules SIB19, then demodulates the PDSCH carrying SIB19 according to the scheduling information, and then reads the uplink synchronization assistance information in SIB19;

[0492] Step 5: The UE uses the WUS configuration and uplink synchronization assistance information to send the uplink signal WUS.

[0493] Example 2:

[0494] SIB 1 is on-demand, SIB19 is still sent according to the previous configuration, and the WUS configuration contains uplink synchronization assistance information. This example may include the following steps Step 1 to Step 2:

[0495] Step 1: The UE enters the idle or inactive state, and the gNB enters the NES state.

[0496] Step 2: The UE wants to initiate access (for example, a service request):

[0497] If the uplink synchronization assistance information in the WUS configuration is still valid, the UE sends an uplink signal according to the WUS configuration;

[0498] If the uplink synchronization assistance information in the WUS configuration fails (for example, the timer in the uplink synchronization configuration information times out), the UE assumes that the transmission position of SIB19 remains unchanged and re-acquires the uplink synchronization information through SIB19. For detailed steps, see Example 1.

[0499] Example 3:

[0500] SIB 1 on-demand, SIB-19 on-demand, and WUS configurations contain uplink synchronization assistance information. This example may include the following steps: Step 1 to Step 2:

[0501] Step 1: The UE enters the idle or inactive state, and the gNB enters the NES state.

[0502] Step 2: The UE sends a WUS before the uplink synchronization assistance information expires to reacquire SIB1 and / or SIB19 information. This means that regardless of whether the UE has any services to send, the UE must send a WUS before the uplink synchronization assistance information expires to obtain valid uplink synchronization assistance information. Alternatively, the expiration / invalidation of the uplink synchronization assistance information is also one of the events that triggers the UE to send a WUS signal.

[0503] Example 4:

[0504] SIB 1 on-demand, SIB-19 on-demand, and WUS configurations do not include uplink synchronization assistance information.

[0505] Option 1: The UE does not want this configuration to occur, that is, the base station does not allow this configuration;

[0506] Option 2: The UE saves the last acquired uplink synchronization assistance information and sends a WUS to obtain valid uplink synchronization assistance information before the uplink synchronization assistance information becomes invalid. In other words, the timeout / invalidity of the uplink synchronization assistance information is also one of the events that triggers the UE to send a WUS signal.

[0507] In this example, the SIB19 information is obtained by the UE before the UE enters the idle / inactive state; or in other words, the UE obtains the information in the connected state.

[0508] Example 5:

[0509] Based on any of the above examples, the uplink synchronization assistance information includes at least one of the following:

[0510] Ephemeris data;

[0511] Common TA parameter information (parameters), such as common TA, common TA drift, common TA drift variation;

[0512] Epoch time (i.e., the effective start time of satellite ephemeris and / or common TA information);

[0513] ntn-UlSyncValidityDuration (i.e., the validity period of satellite ephemeris and / or common TA information);

[0514] Koffset;

[0515] Kmac;

[0516] Polarization information (such as uplink polarization direction, downlink polarization direction).

[0517] Example 6:

[0518] Based on any of the above examples, the cell enters the NES state, and at least one of the following information stops being sent periodically: SIB1 information, other SIB information, periodic CSI-RS, semi-static CSI-RS;

[0519] When a cell leaves the NES state, at least one of the following information starts to be periodically sent: SIB1 information, other SIB information, periodic CSI-RS, or semi-static CSI-RS.

[0520] Example 7:

[0521] Based on any of the above examples, the UE needs to report whether it supports sending WUS when the network enters the NES state in the NTN.

[0522] Example 8:

[0523] Based on any of the above examples, the base station configures the UE whether a cell supports entering NES (or whether to enable this function of a cell), and supports corresponding UE behaviors, such as receiving WUS, such as periodically sending SIB19, etc.

[0524] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0525] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0526] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0527] Figure 5a is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure. As shown in Figure 5a, terminal 5100 may include at least one of a transceiver module 5101 and a processing module 5102. In some embodiments, transceiver module 5101 is configured to receive auxiliary information sent by a network device. This auxiliary information is used by the terminal for uplink synchronization before waking up a network device in an energy-saving state in a non-terrestrial network (NTN).

[0528] Optionally, the transceiver module 5101 is configured to execute at least one of the communication steps of sending and / or receiving performed by the terminal 101 in any of the above methods, which are not described in detail here. Optionally, the processing module 5102 is configured to execute at least one of the other steps performed by the terminal 101 in any of the above methods, which are not described in detail here.

[0529] Figure 5b is a schematic diagram of the terminal structure proposed in an embodiment of the present disclosure. As shown in Figure 5b, network device 5200 may include at least one of a transceiver module 5201 and a processing module 5202. In some embodiments, transceiver module 5201 is configured to send auxiliary information to the terminal, which is used by the terminal to perform uplink synchronization before waking up network devices in an energy-saving state in a non-terrestrial network (NTN).

[0530] Optionally, the transceiver module 5201 is configured to execute at least one of the communication steps of sending and / or receiving performed by the network device 102 in any of the above methods, which are not described in detail here. Optionally, the processing module 5202 is configured to execute at least one of the other steps performed by the network device 102 in any of the above methods, which are not described in detail here.

[0531] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0532] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0533] Figure 6a is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal implementing any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0534] As shown in Figure 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0535] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method, and the processor 6101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0536] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0537] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0538] FIG6b is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6b , but the present disclosure is not limited thereto.

[0539] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0540] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Alternatively, all or part of memory 6203 may be located external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203 and may be used to receive data from memory 6203 or other devices, or may be used to send data to memory 6203 or other devices. For example, interface circuit 6202 may read data stored in memory 6203 and send the data to processor 6201.

[0541] In some embodiments, the interface circuit 6202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the interface circuit 6202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the interface circuit 6202 performs data exchange between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps.

[0542] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0543] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0544] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0545] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods. Industrial Applicability

[0546] By receiving the auxiliary information, the terminal obtains the auxiliary information for uplink synchronization sent by the network device, so that in the NTN communication scenario, the terminal can perform uplink synchronization based on the auxiliary information and then send uplink information, thereby improving the accuracy of communication between the terminal and the network device.

Claims

1. A communication method, executed by a terminal, the method comprising: Receiving auxiliary information sent by a network device, the auxiliary information being used for the terminal to perform uplink synchronization before waking up a network device in an energy-saving state in a non-terrestrial network (NTN).

2. The method according to claim 1, wherein The method further comprises: Receiving first configuration information sent by the network device, wherein the first configuration information is used to configure the time-frequency resources of a wake-up signal (WUS), and the WUS is used to wake up a network device in an energy-saving state in the NTN.

3. The method according to claim 2, wherein Receiving the auxiliary information sent by the network device includes receiving the first configuration information, wherein the first configuration information includes the auxiliary information.

4. The method according to claim 3, wherein, The method further comprises: If a timer corresponding to the auxiliary information expires, re-acquiring valid auxiliary information by receiving a system information block (SIB19) sent by the network device.

5. The method according to claim 4, wherein The SIB19 is periodically sent while the network device is in an energy-saving state.

6. The method according to claim 4, wherein The SIB19 is sent on demand while the network device is in an energy-saving state.

7. The method according to claim 6, wherein, The method further comprises: Before a timer corresponding to the auxiliary information expires, sending a WUS to the network device, the WUS being used to request valid auxiliary information.

8. The method according to claim 1 or 2, wherein Receiving the auxiliary information sent by the network device includes: Receiving the SIB19 sent by the network device, the SIB19 including the auxiliary information; wherein the SIB19 is periodically sent while the network device is in an energy-saving state.

9. The method according to any one of claims 4, 5, 6 and 8, the method further comprising: Receiving second configuration information sent by the network device, the second configuration information being used to configure the time-frequency resources of the SIB19.

10. The method according to claim 9, wherein, The second configuration information satisfies at least one of the following: The second configuration information is received by the terminal before entering the radio resource control (RRC) idle state; The second configuration information is received by the terminal before entering the RRC inactive state; The second configuration information is received by the terminal while in the RRC connected state; The second configuration information is sent by the network device before entering the energy-saving state.

11. The method according to claim 2, wherein, The method further comprises: Before a timer corresponding to the previously saved auxiliary information expires, sending a WUS to the network device, the WUS being used to request valid auxiliary information; wherein the previously saved auxiliary information is included in the SIB19, the SIB19 is sent on demand while the network device is in an energy-saving state, and the first configuration information does not include the auxiliary information.

12. The method according to claim 11, wherein The SIB19 satisfies at least one of the following: The SIB19 is received by the terminal before entering the RRC idle state; The SIB19 is received by the terminal before entering the RRC inactive state; The SIB19 is received by the terminal while in the RRC connected state; The SIB19 is sent by the network device before entering the energy-saving state.

13. The method according to any one of claims 2 to 12, wherein, The first configuration information satisfies at least one of the following: The first configuration information is received by the terminal before entering the RRC idle state; The first configuration information is received by the terminal before entering the RRC inactive state; The first configuration information is received by the terminal when it is in the RRC connected state; The first configuration information is sent by the network device before entering the energy-saving state.

14. The method according to any one of claims 1 to 12, wherein The auxiliary information includes at least one of the following: Satellite ephemeris information; Common timing advance compensation TA parameter information; The start time of effectiveness of the common TA parameter information and satellite ephemeris information; The effective duration of the common TA parameter information and satellite ephemeris information; Polarization information.

15. The method according to any one of claims 2 to 12, wherein, The method further includes: Sending a WUS to the network device according to the first configuration information and the valid auxiliary information.

16. The method according to any one of claims 1 to 12, wherein, The method further includes: Sending capability information to the network device, where the capability information is used to indicate whether the terminal supports sending a WUS when the network device is in the energy-saving state.

17. The method according to any one of claims 1 to 12, wherein, The method further includes: Receiving third configuration information sent by the network device, where the third configuration information is used to indicate the cell in which the network device enters the energy-saving state and / or the terminal behavior supported when the cell is in the energy-saving state.

18. A communication method, performed by a network device, the method includes: Sending auxiliary information to a terminal, where the auxiliary information is used for the terminal to perform uplink synchronization before waking up a network device in the energy-saving state in a non-terrestrial network NTN.

19. The method according to claim 18, wherein, The method further includes: Sending first configuration information to the terminal, where the first configuration information is used to configure the time-frequency resources of the WUS, and the WUS is used to wake up a network device in the energy-saving state in the NTN.

20. The method according to claim 19, wherein, The sending of the auxiliary information to the terminal includes: Sending the first configuration information to the terminal, where the first configuration information includes the auxiliary information.

21. The method according to claim 20, wherein SIB19 is periodically sent when the network device is in the energy-saving state, and the SIB19 contains valid auxiliary information.

22. The method according to claim 20, wherein SIB19 is sent on demand when the network device is in the energy-saving state, and the SIB19 contains valid auxiliary information.

23. The method according to claim 22, wherein, The method further includes: Receiving a WUS sent by the terminal, where the WUS is used to request valid auxiliary information; Sending the SIB19 to the terminal.

24. The method according to claim 18 or 19, wherein, The sending of the auxiliary information to the terminal includes: Sending SIB19 to the terminal, where the SIB19 includes the auxiliary information; wherein the SIB19 is periodically sent when the network device is in the energy-saving state.

25. The method according to any one of claims 21, 22, 23, and 24, the method further includes: Sending second configuration information to the terminal, where the second configuration information is used to configure the time-frequency resources of the SIB19.

26. The method according to claim 25, wherein, The second configuration information satisfies at least one of the following: The second configuration information is received by the terminal before entering the RRC idle state; The second configuration information is received by the terminal before entering the RRC inactive state; The second configuration information is received when the terminal is in the RRC connected state; The second configuration information is sent by the network device before entering the energy-saving state.

27. The method according to claim 19, wherein, The method further includes: Receiving a WUS sent by the terminal, where the WUS is used to request valid auxiliary information; Wherein, the WUS is sent by the terminal before the timer corresponding to the previously saved auxiliary information expires, the previously saved auxiliary information is included in SIB19, SIB19 is sent on demand when the network device is in the energy-saving state, and the auxiliary information is not included in the first configuration information.

28. The method according to claim 27, wherein, SIB19 satisfies at least one of the following: SIB19 is received by the terminal before entering the RRC idle state; SIB19 is received by the terminal before entering the RRC inactive state; SIB19 is received by the terminal when it is in the RRC connected state; SIB19 is sent by the network device before entering the energy-saving state.

29. The method according to any one of claims 18 to 28, wherein The first configuration information satisfies at least one of the following: The first configuration information is received by the terminal before entering the RRC idle state; The first configuration information is received by the terminal before entering the RRC inactive state; The first configuration information is received by the terminal when it is in the RRC connected state; The first configuration information is sent by the network device before entering the energy-saving state.

30. The method according to any one of claims 18 to 28, wherein The auxiliary information includes at least one of the following: Satellite ephemeris information; Common TA parameter information; The start time of validity of the common TA parameter information and satellite ephemeris information; The effective duration of the common TA parameter information and satellite ephemeris information; Polarization information.

31. The method according to any one of claims 19 to 28, wherein, The method further includes: Receiving a WUS sent by the terminal.

32. The method according to any one of claims 18 to 28, wherein The method further includes: Receiving capability information sent by the terminal, where the capability information is used to indicate whether the terminal supports sending a WUS when the network device is in the energy-saving state.

33. The method according to any one of claims 18 to 28, wherein, The method further includes: Sending third configuration information to the terminal, where the third configuration information is used to indicate the cell in which the network device enters the energy-saving state, and / or the terminal behavior supported when the cell is in the energy-saving state.

34. A terminal, comprising: A transceiver module, configured to receive auxiliary information sent by a network device, where the auxiliary information is used for the terminal to perform uplink synchronization before waking up a network device in the energy-saving state in a non-terrestrial network NTN.

35. A network device, comprising: A transceiver module, configured to send auxiliary information to a terminal, where the auxiliary information is used for the terminal to perform uplink synchronization before waking up a network device in the energy-saving state in a non-terrestrial network NTN.

36. A terminal, comprising: One or more processors; Wherein, the terminal is configured to execute the method according to any one of claims 1 to 17.

37. A network device, comprising: One or more processors; Wherein, the network device is configured to execute the method according to any one of claims 18 to 33.

38. A communication system, comprising a terminal and a network device, wherein, The terminal is configured to implement the method according to any one of claims 1 to 17; The network device is configured to implement the method according to any one of claims 18 to 33.

39. A storage medium storing instructions, wherein when the instructions are run on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 17 or any one of claims 18 to 33.

Images