System information transmission method, device, equipment, medium and program product

Abstract

The invention discloses a system information transmission method, device and equipment, a medium and a program product. The method comprises the following steps: receiving a first message sent by network equipment; wherein the first message comprises downlink control information, and a set bit position in the downlink control information is used for indicating that non-terrestrial network related system information is modified or the downlink control information is scrambled by using a non-terrestrial network paging wireless network temporary identifier; in a system information modification period, receiving first system information sent by the network equipment; when it is determined that at least one piece of system information is modified according to the first system information, receiving the at least one piece of system information sent by the network equipment; according to the invention, the terminal in the cell can know the modification state of the related system information of the non-ground network after receiving the first message, and for a common terminal of the ground network, the first system information does not need to be acquired, so that the power consumption of the terminal can be reduced, and the resource waste is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a system information transmission method, device, equipment, medium and program product. BACKGROUND

[0002] In the existing system information modification process, the base station needs to first send a paging message of system information modification to notify all terminals in the cell, and then the base station sends new system information to the terminal. For example, the NTN (Non-Terrestrial Network) related system information of the base station side changes, and the system information modification process is started. In the paging period of the system information modification, all terminals receive SIB (System Information Block) 1 to determine whether the SIB related to itself is modified. For ordinary terminals that do not support NTN access, the modification of NTN related system information SIBx is ignored, and the system information modification process ends. For NTN terminals, further receive SIBx, save the information in SIBx to the local, and the system information modification ends.

[0003] In the existing system information modification process, even if the base station only updates the NTN related system information, TN (Terrestrial Network) ordinary terminals that do not support NTN access also need to obtain the SIB1 message, and only after obtaining the SIB1 message, the terminal can know that this system information modification has nothing to do with itself, which causes large terminal power consumption and resource waste. SUMMARY

[0004] To solve the problems in the prior art, the embodiments of the present application provide a system information transmission method, device, equipment, medium and program product, which can effectively reduce terminal power consumption and avoid resource waste.

[0005] In a first aspect, the embodiments of the present application provide a system information transmission method applied to a terminal supporting a non-terrestrial network in a terrestrial network, including:

[0006] Receiving a first message sent by a network device; wherein the first message includes downlink control information, and a set bit position in the downlink control information is used to indicate non-terrestrial network related system information modification or the downlink control information uses a non-terrestrial network paging radio network temporary identifier scrambling;

[0007] In a system information modification period, receiving first system information sent by the network device;

[0008] In the case of determining that there is at least one piece of system information modification according to the first system information, receiving the at least one piece of system information sent by the network device.

[0009] As an improvement to the above scheme, the set bit position includes a reserved bit in the downlink control information or a newly added bit in the downlink control information.

[0010] As an improvement to the above scheme, when the downlink control information is scrambled with a non-terrestrial network paging radio network temporary identifier, a flag bit in the downlink control information indicating system information modification is used to indicate whether there is any modification to non-terrestrial network related system information.

[0011] As an improvement to the above scheme, when the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information, the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier.

[0012] As an improvement to the above scheme, the set bit position is used to indicate the modification status of non-terrestrial network related system information; wherein, when the set bit position is a set character, it indicates that the non-terrestrial network related system information has been modified.

[0013] As an improvement to the above scheme, the reserved bits include the 5th to 8th bits of the downlink control information.

[0014] As an improvement to the above solution, after receiving the first message sent by the network device, the method further includes:

[0015] When the downlink control information is scrambled using a non-terrestrial network paging radio network temporary identifier, the first message is descrambled using the non-terrestrial network paging radio network temporary identifier to obtain the descrambled downlink control information;

[0016] Read the flag indicating system information modification from the descrambled downlink control information;

[0017] When the flag indicating system information modification in the downlink control information is set to a specific character, it is determined that there is modification of non-terrestrial network related system information, and the system information modification process is initiated.

[0018] As an improvement to the above scheme, the value of the temporary identifier of the non-terrestrial network paging radio network is within a set value range; wherein, the set value range includes unused reserved values ​​within the value interval of the temporary identifier of the radio network.

[0019] As an improvement to the above solution, after receiving the first message sent by the network device, the method further includes:

[0020] When the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, the first message is descrambled using the terrestrial network paging radio network temporary identifier to obtain the descrambled downlink control information;

[0021] Read the set bit position in the descrambled downlink control information;

[0022] When the set bit position in the downlink control information is a set character, it is determined that there is modification of non-terrestrial network related system information, and the system information modification process is initiated.

[0023] Secondly, embodiments of the present invention provide a system information transmission method, applied to a network device, comprising:

[0024] Broadcast a first message to all terminals within the cell; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled using a non-terrestrial network paging wireless network temporary identifier;

[0025] Send the first system information;

[0026] Send at least one system message;

[0027] Specifically, during the system information modification period, if a terminal in the terrestrial network that supports non-terrestrial networks determines, based on the first system information obtained, that at least one piece of system information has been modified, it receives the at least one piece of system information.

[0028] As an improvement to the above scheme, the set bit position includes a reserved bit in the downlink control information or a newly added bit in the downlink control information.

[0029] As an improvement to the above scheme, when the downlink control information is scrambled with a non-terrestrial network paging radio network temporary identifier, a flag bit in the downlink control information indicating system information modification is used to indicate whether there is any modification to non-terrestrial network related system information.

[0030] As an improvement to the above scheme, when the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information, the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier.

[0031] As an improvement to the above scheme, the first message is sent in the physical downlink control channel to instruct all terminals in the cell to descramble the first message;

[0032] In the case where the downlink control information is scrambled using a non-terrestrial network paging radio network temporary identifier, if a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the non-terrestrial network paging radio network temporary identifier, and the flag indicating system information modification in the downlink control information is a preset character, the system information modification process is initiated; if a terminal in the terrestrial network fails to descramble the first message using the terrestrial network paging radio network temporary identifier, the process ends.

[0033] When the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, after a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is set to a preset character, and the system information modification process is initiated; after the terminal in the terrestrial network descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is ignored, and the process ends.

[0034] As an improvement to the above scheme, the set bit position is used to indicate the modification status of non-terrestrial network related system information; wherein, when the set bit position is a set character, it indicates that the non-terrestrial network related system information has been modified.

[0035] As an improvement to the above scheme, the reserved bits include the 5th to 8th bits of the downlink control information.

[0036] As an improvement to the above scheme, the value of the temporary identifier of the non-terrestrial network paging radio network is within a set value range; wherein, the set value range includes unused reserved values ​​within the value interval of the temporary identifier of the radio network.

[0037] Thirdly, embodiments of the present invention provide a system information transmission device, applied to a terminal in a terrestrial network that supports non-terrestrial networks, comprising:

[0038] The first message receiving module is used to receive a first message sent by a network device; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier;

[0039] The first system information receiving module is used to receive the first system information sent by the network device during the system information modification cycle;

[0040] The second system information receiving module is used to receive the at least one piece of system information sent by the network device when it is determined from the first system information that at least one piece of system information has been modified.

[0041] Fourthly, embodiments of the present invention provide a system information transmission device applied to network equipment, comprising:

[0042] The first message broadcast module is used to broadcast a first message to all terminals in the cell; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier;

[0043] The first system information sending module is used to send first system information;

[0044] The second system information sending module is used to send the at least one piece of system information;

[0045] Specifically, during the system information modification period, if a terminal in the terrestrial network that supports non-terrestrial networks determines, based on the first system information obtained, that at least one piece of system information has been modified, it receives the at least one piece of system information.

[0046] Fifthly, embodiments of the present invention provide a system information transmission device, comprising: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the system information transmission method as described in any one of the first aspects or the system information transmission method as described in any one of the second aspects.

[0047] In a sixth aspect, embodiments of the present invention provide a computer-readable storage medium storing a computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to perform a system information transmission method as described in any one of the first aspects or a system information transmission method as described in any one of the second aspects.

[0048] In a seventh aspect, embodiments of the present invention provide a computer program product, including a computer program / instruction, which, when executed by a processor, implements the system information transmission method as described in any one of the first aspects or the system information transmission method as described in any one of the second aspects.

[0049] Compared to existing technologies, the beneficial effects of a system information transmission method, apparatus, device, medium, and program product according to embodiments of the present invention are as follows: A network device broadcasts a first message containing downlink control information scrambled with a non-terrestrial network paging radio network temporary identifier, or uses a set bit position in the downlink control information to indicate modification of non-terrestrial network-related system information; When a terminal in a terrestrial network that supports non-terrestrial networks determines that there is modification of non-terrestrial network-related system information after receiving the first message, it receives first system information sent by the network device within the system information modification period; then, when it is determined that at least one piece of system information has been modified based on the first system information, it receives the at least one piece of system information sent by the network device; In this embodiment of the invention, since a terminal in a cell can know the modification status of non-terrestrial network-related system information after receiving the first message, ordinary terminals in a terrestrial network do not need to obtain the first system information again, thereby reducing terminal power consumption and avoiding resource waste. Attached Figure Description

[0050] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a flowchart of a system information transmission method provided in an embodiment of the present invention;

[0052] Figure 2 This is a first example diagram of the system information modification process provided in the embodiments of the present invention;

[0053] Figure 3 This is a second example diagram of the system information modification process provided in the embodiments of the present invention;

[0054] Figure 4 This is another flowchart of a system information transmission method provided in an embodiment of the present invention;

[0055] Figure 5 This is a structural block diagram of a system information transmission device provided in an embodiment of the present invention;

[0056] Figure 6 This is another structural block diagram of a system information transmission device provided in an embodiment of the present invention;

[0057] Figure 7 This is a structural block diagram of a system information transmission device provided in an embodiment of the present invention. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] It is understood that the various numerical designations used in the embodiments of this invention are merely for descriptive convenience and are not intended to limit the scope of this application. The order of the process numbers does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0060] In embodiments of the invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terms "multiple or several" refer to two or more, and the same applies to "multiple / items or several kinds / items." "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0061] The following explains some terms and concepts involved in the embodiments of the present invention.

[0062] A terminal, also known as a terminal device or user equipment (UE), is a mobile or fixed device with wireless transceiver capabilities. Terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water (such as on ships); and they can be deployed in the air (e.g., on airplanes, balloons, and satellites). The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device for industrial control, wireless terminal device for autonomous driving, wireless terminal device for telemedicine, wireless terminal device for smart grids, wireless terminal device for transportation safety, wireless terminal device for smart cities, and / or wireless terminal device for smart homes. The terminal may also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device or computing device with wireless communication function, vehicle-mounted device, wearable device, terminal device in the future 5G network, or terminal device in the future evolved Public Land Mobile Network (PLMN), etc., without specific limitations in the embodiments of the present invention.

[0063] Network equipment refers to nodes or devices that connect user equipment to a wireless network, and can also be called base stations or RAN equipment. For example, network equipment can be a base station, a gNB (Generation NodeB, a next-generation Node B in 5G, serving as a 5G base station), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Base Station (e.g., Home Evolved NodeB, or Home Node B, HNB), a Base Band Unit (BBU), a Transmitting and Receiving Point (TRP), a Transmitting Point (TP), and / or a Mobile Switching Center, etc., without specific limitations in this embodiment of the invention.

[0064] The embodiments of the present invention are applicable to mobile communication systems with various wireless access technologies, such as 4G communication systems, 5G communication systems, transitional systems between LTE and 5G communication systems (also known as 4.5G communication systems), or future 6G communication systems, etc., and are not specifically limited in the embodiments of the present invention.

[0065] ETWS: Earthquake and Tsunami Warning System;

[0066] CMAS: Commercial Mobile Alert Service;

[0067] eDRX: Extended DRX / Extended Discontinuous Reception;

[0068] RNTI: PRadio Network Temporary Identity;

[0069] RA-RNTI: Random Access RNTI, a temporary identifier for random access wireless networks;

[0070] MSGB-RNTI: Temporary Identifier for Wireless Network;

[0071] Temporary C-RNTI: Temporary Cell RNTI, Temporary Identifier for Temporary Cell Radio Network;

[0072] RNTI: Cell RNTI, Temporary Identifier for Cell Wireless Network;

[0073] CI-RNTI: Used as a cancellation identifier for the terminal in the uplink;

[0074] MCS-C-RNTI: Modulation and Coding Scheme Control Radio Network Temporary Identifier;

[0075] CS-RNTI: Configured Scheduling RNTI, a temporary identifier for configuring and scheduling wireless networks;

[0076] TPC-PUCCH-RNTI: Transmission Power Control Physical Uplink ControlCHannel RNTI, a temporary identifier for the wireless network of the Transmission Power Control Physical Uplink Control Channel.

[0077] TPC-PUSCH-RNTI: Transmission Power Control Physical Uplink SharedChannel RNTI, a temporary identifier for a wireless network using the physical uplink shared channel for transmission power control.

[0078] TPC-SRS-RNTI: Transmission Power Control Sounding Reference Signal RNTI, a temporary identifier for a wireless network;

[0079] INT-RNTI: Interruption RNTI, a temporary identifier for interrupted wireless network;

[0080] SFI-RNTI: Slot Format Indication RNTI, a temporary identifier for a wireless network;

[0081] SP-CSI-RNTI: Semi-Persistent Channel State Information RNTI, a temporary identifier for a semi-persistent channel state information network.

[0082] PS-RNTI: Power Saving RNTI, a temporary identifier for energy-saving wireless networks;

[0083] SL-RNTI: Side Link RNTI, Temporary Identifier for Side Link Radio Network;

[0084] SL-CS-RNTI: Side Link Configured Scheduling RNTI, a temporary identifier for the side link configured to schedule wireless networks;

[0085] SL-PRS-RNTI: Side Link Positioning Reference RNTI, a temporary identifier for wireless networks.

[0086] SL-PRS-CS-RNTI: Side Link-Positioning Reference Configured SchedulingRNTI, a temporary identifier for configuring and scheduling wireless networks.

[0087] SL Semi-Persistent Scheduling V-RNTI: Side Link Semi-Persistent Scheduling Virtual RNTI, a temporary identifier for a virtual wireless network under semi-persistent scheduling on the side link.

[0088] AI-RNTI: Availability Indication RNTI, a temporary identifier for wireless network availability.

[0089] G-RNTI: Group RNTI, temporary identifier for multicast wireless networks;

[0090] G-CS-RNTI: Group Configured Scheduling RNTI, a temporary identifier for multicast configuration and scheduling of wireless networks;

[0091] CG-SDT-CS-RNTI: Cell Group-Small Data Transmission-ConfiguredScheduling RNTI, a temporary identifier for the cell multicast short data transmission configuration scheduling wireless network;

[0092] NCR-RNTI: Non-Competitive Random Access RNTI, a temporary identifier for non-competitive random access wireless networks;

[0093] cellDTRX-RNTI: A temporary identifier for a wireless network associated with a certain duplex or sleep function of the cell;

[0094] MCCH-RNTI: Multicast Broadcast Service Control Channel RNTI, a temporary identifier for the control channel of the Multicast Service (MBS) radio network.

[0095] Multicast MCCH-RNTI: Multicast MCCH RNIT, temporary identifier for the multicast MBS control channel radio network;

[0096] PEI-RNTI: Permanent Equipment Identifier RNTI, a temporary identifier for a wireless network that indicates a permanent device identifier;

[0097] RNTI: Paging RNTI, Temporary Identifier for Paging Wireless Networks;

[0098] SI-RNTI: System Information RNTI, temporary identifier for wireless network;

[0099] PNTN-RNTI: Paging Non RNTI, a temporary identifier for non-terrestrial network paging wireless networks.

[0100] Please see Figure 1 , Figure 1 This is a flowchart of a system information transmission method provided by an embodiment of the present invention. The system information transmission method is applied to a terminal in a terrestrial network that supports non-terrestrial networks, and the method includes:

[0101] S11: Receive a first message sent by a network device; wherein the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier;

[0102] S12: During the system information modification period, receive the first system information sent by the network device;

[0103] S13: If it is determined from the first system information that at least one piece of system information has been modified, receive the at least one piece of system information sent by the network device.

[0104] In this embodiment of the invention, when the system information related to the non-terrestrial network on the network side changes, the corresponding network device initiates a system information modification process. Then, within the system information modification period, the network device sends a first message on the Physical Downlink Control Channel (PDCCH) to all terminals in the cell (including terminals in the terrestrial network that support both non-terrestrial and terrestrial networks and terminals that only support terrestrial networks). For example, the first message includes downlink control information (DCI) scrambled using P-RNTI or PNTN-RNTI, and this downlink control information can be DCI1_0. At this time, terminals in the terrestrial network that support both non-terrestrial and terrestrial networks can receive the aforementioned first message (e.g., the DCI1_0 message), and then each terminal descrambles the first message.

[0105] For Case 1, where downlink control information is scrambled using PNTN-RNTI, terminals within the cell that only support terrestrial networks fail to descramble using P-RNTI and terminate the process. Terminals within the cell that support non-terrestrial networks succeed in descrambling using PNTN-RNTI and initiate the system information modification process. Subsequently, terminals supporting non-terrestrial networks receive the first system information SIB1 sent by the network device within the system information modification period. If, based on the first system information, it is determined that at least one system information has been modified, the terminal receives at least one modified system information SIBx sent by the network device, where x represents the sequence number of the system message SIB, and x ≥ 1.

[0106] For case 2, where a set bit position in the downlink control information is used to indicate modifications to system information related to non-terrestrial networks, this downlink control information can be scrambled using P-RNTI, PNTN-RNTI, or other radio network temporary identifiers; no specific limitation is made in this embodiment. Taking P-RNTI scrambling as an example, if a terminal in the cell that only supports terrestrial networks successfully descrambles using P-RNTI, it ignores the set bit position and ends the process. If a terminal in the cell that supports non-terrestrial networks successfully descrambles using P-RNTI, it initiates the system information modification process. Subsequently, the terminal supporting non-terrestrial networks receives the first system information SIB1 sent by the network device within the system information modification period. If it is determined from the first system information that at least one system information has been modified, it receives at least one modified system information SIBx sent by the network device, where x represents the sequence number of the system message SIB, and x≥1.

[0107] In this embodiment of the invention, after receiving the first message sent by the network device, the terminal in the cell can know the modification status of the non-terrestrial network related system information, that is, whether the non-terrestrial network related system information has changed. For terminals that support non-terrestrial networks, the first system information SIB1 can be further obtained, and then the subsequently changed SIBx can be obtained. For terminals that only support non-terrestrial networks, it is not necessary to obtain the first system information SIB1 again, thereby reducing terminal power consumption and avoiding resource waste.

[0108] It should be noted that, in the embodiments of the present invention, the term "terminal supporting non-terrestrial networks" can also be described as "NTN terminal", and the two can be used interchangeably. The term "terminal supporting only terrestrial networks" can also be described as "TN terminal", and the two can be used interchangeably.

[0109] In response to scenario 1 above, after receiving the first message sent by the network device, the NTN terminal also performs the following operations:

[0110] When the downlink control information is scrambled using a non-terrestrial network paging radio network temporary identifier, the first message is descrambled using the non-terrestrial network paging radio network temporary identifier to obtain the descrambled downlink control information;

[0111] The flag indicating system information modification in the descrambled downlink control information;

[0112] When the flag indicating system information modification in the downlink control information is set to a specific character, it is determined that there is modification of non-terrestrial network related system information, and the system information modification process is initiated.

[0113] Taking the downlink control information using DCI1_0 short messages as an example, for case 1 of downlink control information scrambled with PNTN-RNTI, the first bit in the 8 bits of the PNTN-RNTI scrambled DCI1_0 short message is used as a flag indicating system information modification. The functions of the 8 bits of the PNTN-RNTI scrambled DCI1_0 short message are shown in the table below.

[0114]

[0115] In this embodiment of the invention, the original flag bit of the DCI1_0 short message used to indicate system information modification is used to indicate NTN-related system information modification. For example, when the flag bit indicating system information modification is set (e.g., set to 1), it indicates that there is a change in NTN-related system information.

[0116] Regarding situation 1 above, such as Figure 2 As shown, the specific system information modification process is as follows:

[0117] (1) When the NTN-related system information of the network device changes, the system information modification process is initiated.

[0118] (2) During the paging period of system information modification, the network device sends a DCI1_0 short message in the PDCCH; wherein, the DCI1_0 short message is scrambled with PNTN-RNTI, and the flag indicating system information modification in the original DCI1_0 short message is located at position 1;

[0119] (3) When the terminal receives the DCI1_0 short message, the TN terminal fails to descramble using P-RNTI and ends the process; the NTN terminal successfully descrambles using PNTN-RNTI, finds the flag indicating the system information modification status is in position 1, determines that there is NTN-related system information modification, and starts the system information modification process to obtain new system information.

[0120] (4) During the system information modification period, the NTN terminal receives the first system information SIB1 and compares the value tag in the system information scheduling list in the first system information SIB1 with the value tag stored locally. If the value tags are different, it means that the SIB corresponding to the value tag has been modified. For example, if the value tag of SIBx in the system information scheduling list in the first system information SIB1 has been modified, SIBx is further obtained.

[0121] (5) The NTN terminal receives SIBx, saves the information content in SIBx to the local machine, and the system information modification process ends.

[0122] The value of the non-terrestrial network paging radio network temporary identifier PNTN-RNTI is within a set value range; wherein the set value range includes unused reserved values ​​within the value range of the radio network temporary identifier RNTI.

[0123] For example, the value range of the Wireless Network Temporary Identifier (RNTI) is shown in the table below.

[0124]

[0125] In this embodiment of the invention, the value of the temporary identifier PNTN-RNTI for non-terrestrial network paging wireless network can be within the range of FFF3-FFFA, and any value from FFF3 to FFFA can be selected as the temporary identifier PNTN-RNTI for non-terrestrial network paging wireless network. For example, the value of the temporary identifier PNTN-RNTI for non-terrestrial network paging wireless network can be FFFA.

[0126] In this embodiment of the invention, a new PNTN-RNTI is added. If only NTN-related system information is modified, the network device uses PNTN-RNTI to scramble DCI1_0. Subsequently, the NTN terminal uses PNTN-RNTI to descramble. If DCI1_0 is successfully parsed and the flag indicating system information modification is set to 1, it indicates that NTN-related system information has been modified, and the subsequent system information update process continues. The TN terminal, on the other hand, uses P-RNTI for descrambling normally, recognizes the descrambling, and ends the system information modification process. For the TN terminal, it is no longer necessary to obtain the first system information SIB1, thereby reducing terminal power consumption and avoiding resource waste.

[0127] For situation 2 above, the set bit position includes the reserved bit in the downlink control information or the newly added bit in the downlink control information.

[0128] In some optional embodiments, the set bit position is used to indicate the modification status of non-terrestrial network related system information; wherein, when the set bit position is a set character, it indicates modification of non-terrestrial network related system information.

[0129] For example, when NTN-related information changes on the network device side, the reserved bit position or the newly added bit position in the downlink control information is set as a character.

[0130] It should be noted that the values ​​of the set characters are not specifically limited in the embodiments of the present invention, and users can set them according to their actual needs.

[0131] Taking the P-RNTI scrambling method used by an NTN terminal as an example, after receiving the first message sent by the network device, the NTN terminal also performs the following operations:

[0132] When the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, the first message is descrambled using the terrestrial network paging radio network temporary identifier to obtain the descrambled downlink control information;

[0133] Read the set bit position in the descrambled downlink control information;

[0134] When the set bit position in the downlink control information is a set character, it is determined that there is modification of non-terrestrial network related system information, and the system information modification process is initiated.

[0135] The set bit position can be any one of the unused reserved bits in the set number of bits of the downlink control information.

[0136] For example, the reserved bits include bits 5 to 8 of the downlink control information.

[0137] Taking the DCI1_0 short message as an example for downlink control information, in case 2 where a set bit position in the downlink control information is used to indicate modifications to non-terrestrial network related system information, any one of the unused reserved bits in the 8 bits of the P-RNTI scrambled DCI1_0 short message is used as a flag indicating the modification status of NTN related system information. For example, bits 5-8 of the 8 bits of the P-RNTI scrambled DCI1_0 short message are reserved bits and not yet used. One of these bits can be used as a new bit to indicate the modification status of NTN related system information. As a preferred option, the 5th bit can be used to indicate the modification status of NTN related system information. The functions of the 8 bits of the P-RNTI scrambled DCI1_0 short message are shown in the table below.

[0138]

[0139] In this embodiment of the invention, newly added bits that are not currently used in the DCI1_0 short message are used to indicate the modification status of NTN-related system information. For example, when the 5th bit position indicating the modification of NTN-related system information is set (e.g., set to 1), it indicates that there is a change in NTN-related system information.

[0140] In another embodiment, the bit position can also be set by adding a new bit to indicate the modification status of NTN-related system information. For example, a 9th bit can be added to the DCI1_0 short message, which is used to indicate the modification status of NTN-related system information.

[0141] Regarding situation 2 above, such as Figure 3 As shown, the specific system information modification process is as follows:

[0142] (1) When the NTN-related system information of the network device changes, the system information modification process is initiated.

[0143] (2) During the paging period of system information modification, the network device sends a DCI1_0 short message in the PDCCH; wherein, the DCI1_0 short message is scrambled with P-RNTI, and the setting bit position in the DCI1_0 short message (such as the 5th bit or the newly added 9th bit) is used to indicate the NTN related system information modification status, wherein the setting bit position is set to 1;

[0144] (3) When the terminal receives the DCI1_0 short message, the TN terminal uses P-RNTI to descramble and ignores the newly added bit indicating the modification status of NTN-related system information, and ends the process; the NTN terminal successfully descrambles using P-RNTI, reads the newly added bit indicating the modification of system information in the DCI1_0 short message and sets it to 1, confirms that there is modification of NTN-related system information, and starts the system information modification process to obtain new system information;

[0145] (4) During the system information modification period, the NTN terminal receives the first system information SIB1 and compares the value tag in the system information scheduling list in the first system information SIB1 with the value tag stored locally. If the value tags are different, it means that the SIB corresponding to the value tag has been modified. For example, if the value tag of SIBx in the system information scheduling list in the first system information SIB1 has been modified, SIBx is further obtained.

[0146] (5) The NTN terminal receives SIBx, saves the information content in SIBx to the local machine, and the system information modification process ends.

[0147] In this embodiment of the invention, a new bit is used in DCI1_0 scrambled with P-RNTI to indicate the modification status of NTN-related system information. If this new bit is set to 1, it indicates that NTN-related system information has been modified. When the NTN terminal reads that this bit is 1, it indicates that NTN-related system information has been modified and continues to execute the subsequent system information update process. The TN terminal ignores this new bit after successful descrambling and ends the system information modification process. For the TN terminal, it is no longer necessary to obtain the first system information SIB1, thereby reducing terminal power consumption and avoiding resource waste.

[0148] Compared to existing technologies, this invention embodiment adds PNTN-RNTI for DCI1_0 scrambling or adds a bit to indicate NTN-related system information modification. When adding PNTN-RNTI for DCI1_0 scrambling, if only NTN-related system information is modified, the network device uses PNTN-RNTI to scramble DCI1_0. At this time, the NTN terminal uses PNTN-RNTI to descramble. If DCI1_0 is successfully parsed, the original flag indicating system information modification is set to 1, indicating that there is system information modification, and the subsequent system information update process continues. However, the TN terminal fails to descramble DCI1_0 using P-RNTI and the process ends. When adding PNTN-RNTI for DCI1_0 scrambling, a new bit is used in the scrambled DCI1_0 to indicate the modification status of NTN-related system information. If this new bit is set to 1, it indicates that the NTN-related system information has been modified. When the NTN terminal reads the new bit as 1, it indicates that there is system information modification and continues to execute the subsequent system information update process. The TN terminal ignores the new bit and ends the process. Through the above process, after obtaining the modified DCI1_0, the terminal can know the modification status of the NTN-related system information. For the TN terminal, there is no need to obtain SIB1, which can reduce the number of times ordinary terminals in the TN cell read system information in the IDLE and INACTIVE states in the air-space-ground hybrid network, reduce terminal power consumption, avoid resource waste, and is particularly suitable for application scenarios where terminal energy is limited.

[0149] Please see Figure 4 , Figure 4 This is another flowchart of a system information transmission method provided in an embodiment of the present invention. The system information transmission method, applied to a network device, includes:

[0150] S21: Broadcast a first message to all terminals in the cell; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier;

[0151] S22: Send the first system information;

[0152] S23: Send at least one system message;

[0153] Specifically, during the system information modification period, if a terminal in the terrestrial network that supports non-terrestrial networks determines, based on the first system information obtained, that at least one piece of system information has been modified, it receives the at least one piece of system information.

[0154] In one optional embodiment, the set bit position includes a reserved bit in the downlink control information or a newly added bit in the downlink control information.

[0155] In an optional embodiment, when the downlink control information is scrambled with a non-terrestrial network paging radio network temporary identifier, a flag in the downlink control information indicating system information modification is used to indicate whether there is any modification to non-terrestrial network related system information.

[0156] In an optional embodiment, when the set bit position in the downlink control information is used to indicate modification of non-terrestrial network related system information, the downlink control information is scrambled using a terrestrial network paging radio network temporary identifier.

[0157] In an optional embodiment, the first message is sent in the physical downlink control channel to instruct all terminals in the cell to descramble the first message;

[0158] In the case where the downlink control information is scrambled using a non-terrestrial network paging radio network temporary identifier, if a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the non-terrestrial network paging radio network temporary identifier, and the flag indicating system information modification in the downlink control information is a preset character, the system information modification process is initiated; if a terminal in the terrestrial network fails to descramble the first message using the terrestrial network paging radio network temporary identifier, the process ends.

[0159] When the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, after a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is set to a preset character, and the system information modification process is initiated; after the terminal in the terrestrial network descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is ignored, and the process ends.

[0160] In one optional embodiment, the set bit position is used to indicate the modification status of non-terrestrial network related system information; wherein, when the set bit position is a set character, it indicates that the non-terrestrial network related system information has been modified.

[0161] In one alternative embodiment, the reserved bits include bits 5 through 8 of the downlink control information.

[0162] In one optional embodiment, the value of the temporary identifier of the non-terrestrial network paging radio network is within a set value range; wherein, the set value range includes unused reserved values ​​within the value interval of the temporary identifier of the radio network.

[0163] It should be noted that the working process of the system information transmission method applied to network devices described in the embodiments of the present invention can refer to the working process of the system information transmission method applied to NTN terminals described in the above embodiments, and the technical effects achieved are the same as those of the system information transmission method described in the above embodiments, which will not be repeated here.

[0164] See Figure 5 , Figure 5 This invention provides a structural block diagram of a system information transmission device, which is applied to a terminal in a terrestrial network that supports non-terrestrial networks, and includes:

[0165] The first message receiving module 11 is used to receive a first message sent by a network device; wherein the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier;

[0166] The first system information receiving module 12 is used to receive the first system information sent by the network device during the system information modification period;

[0167] The second system information receiving module 13 is used to receive the at least one piece of system information sent by the network device when it is determined from the first system information that at least one piece of system information has been modified.

[0168] In an optional embodiment, as an improvement to the above scheme, the set bit position includes a reserved bit in the downlink control information or a newly added bit in the downlink control information.

[0169] In an optional embodiment, when the downlink control information is scrambled with a non-terrestrial network paging radio network temporary identifier, a flag in the downlink control information indicating system information modification is used to indicate whether there is any modification to non-terrestrial network related system information.

[0170] In an optional embodiment, when the set bit position in the downlink control information is used to indicate modification of non-terrestrial network related system information, the downlink control information is scrambled using a terrestrial network paging radio network temporary identifier.

[0171] In one optional embodiment, the set bit position is used to indicate the modification status of non-terrestrial network related system information; wherein, when the set bit position is a set character, it indicates that the non-terrestrial network related system information has been modified.

[0172] In one alternative embodiment, the reserved bits include bits 5 through 8 of the downlink control information.

[0173] In an optional embodiment, the device further includes:

[0174] The first descrambling module is used to descramble the first message using the non-terrestrial network paging radio network temporary identifier after receiving the first message sent by the network device, in the case where the downlink control information is scrambled using the non-terrestrial network paging radio network temporary identifier, to obtain the descrambled downlink control information.

[0175] The first bit reading module is used to read the flag bit indicating system information modification in the descrambled downlink control information;

[0176] The first system information modification process initiation module is used to determine that there is non-terrestrial network related system information modification when the flag indicating system information modification in the downlink control information is a set character, and to initiate the system information modification process.

[0177] In one optional embodiment, the value of the temporary identifier of the non-terrestrial network paging radio network is within a set value range; wherein, the set value range includes unused reserved values ​​within the value interval of the temporary identifier of the radio network.

[0178] In an optional embodiment, the device further includes:

[0179] The second descrambling module is used to descramble the first message after receiving the first message sent by the network device, in the case where the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, to obtain the descrambled downlink control information.

[0180] The second bit reading module is used to read the set bit position in the descrambled downlink control information;

[0181] The second system information modification process initiation module is used to determine that there is non-terrestrial network related system information modification when the set bit position in the downlink control information is a set character, and to initiate the system information modification process.

[0182] It should be noted that the working process of each module in the system information transmission device applied to the NTN terminal described in the embodiments of the present invention can refer to the working process of the system information transmission method applied to the NTN terminal described in the above embodiments, and the technical effect achieved is the same as that of the system information transmission method described in the above embodiments, which will not be repeated here.

[0183] See Figure 5 , Figure 5This is another structural block diagram of a system information transmission device provided in an embodiment of the present invention. The system information transmission device is applied to a network device and includes:

[0184] The first message broadcast module 21 is used to broadcast a first message to all terminals in the cell; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier;

[0185] The first system information sending module 22 is used to send first system information;

[0186] The second system information sending module 23 is used to send the at least one piece of system information;

[0187] Specifically, during the system information modification period, if a terminal in the terrestrial network that supports non-terrestrial networks determines, based on the first system information obtained, that at least one piece of system information has been modified, it receives the at least one piece of system information.

[0188] In one optional embodiment, the set bit position includes a reserved bit in the downlink control information or a newly added bit in the downlink control information.

[0189] In an optional embodiment, when the downlink control information is scrambled with a non-terrestrial network paging radio network temporary identifier, a flag in the downlink control information indicating system information modification is used to indicate whether there is any modification to non-terrestrial network related system information.

[0190] In an optional embodiment, when the set bit position in the downlink control information is used to indicate modification of non-terrestrial network related system information, the downlink control information is scrambled using a terrestrial network paging radio network temporary identifier.

[0191] In an optional embodiment, the first message is sent in the physical downlink control channel to instruct all terminals in the cell to descramble the first message;

[0192] In the case where the downlink control information is scrambled using a non-terrestrial network paging radio network temporary identifier, if a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the non-terrestrial network paging radio network temporary identifier, and the flag indicating system information modification in the downlink control information is a preset character, the system information modification process is initiated; if a terminal in the terrestrial network fails to descramble the first message using the terrestrial network paging radio network temporary identifier, the process ends.

[0193] When the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, after a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is set to a preset character, and the system information modification process is initiated; after the terminal in the terrestrial network descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is ignored, and the process ends.

[0194] In one optional embodiment, the newly added bit is used to indicate the modification status of non-terrestrial network related system information; wherein, when the newly added bit position is set to a character, it indicates that the non-terrestrial network related system information has been modified.

[0195] In one alternative embodiment, the reserved bits include bits 5 through 8 of the downlink control information.

[0196] In one optional embodiment, the value of the temporary identifier of the non-terrestrial network paging radio network is within a set value range; wherein, the set value range includes unused reserved values ​​within the value interval of the temporary identifier of the radio network.

[0197] It should be noted that the working process of each module in the system information transmission device applied to network equipment described in the embodiments of the present invention can refer to the working process of the system information transmission method applied to NTN terminals described in the above embodiments, and the technical effect achieved is the same as that of the system information transmission method described in the above embodiments, so it will not be repeated here.

[0198] See Figure 7 , Figure 7 This is a structural block diagram of a system information transmission device provided in an embodiment of the present invention. The system information transmission device includes a processor 31, a memory 32, and a computer program stored in the memory 32 and executable on the processor 31. When the processor 31 executes the computer program, it implements the steps in the above-described system information transmission method embodiments, such as steps S11-S13 or steps S21-S23.

[0199] For example, the computer program can be divided into one or more modules / units, which are stored in the memory 32 and executed by the processor 31 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in the system information transmission device.

[0200] The system information transmission device may include, but is not limited to, processor 31 and memory 32. Those skilled in the art will understand that the schematic diagram is merely an example of a system information transmission device and does not constitute a limitation on the system information transmission device. It may include more or fewer components than illustrated, or combine certain components, or different components. For example, the system information transmission device may also include input / output devices, network access devices, buses, etc.

[0201] The processor 31 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. The processor 31 is the control center of the system information transmission equipment, connecting various parts of the entire system information transmission equipment through various interfaces and lines.

[0202] The memory 32 can be used to store the computer program or module. The processor 31 implements various functions of the system information transmission device by running or executing the computer program or module stored in the memory 32 and calling the data stored in the memory 32. The memory 32 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, phonebook, etc.). In addition, the memory 32 may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0203] If the modules / units integrated into the system information transmission device are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by the processor 31, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0204] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0205] The above description is a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, many improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A system information transmission method, characterized in that, Terminals used in terrestrial networks that support non-terrestrial networks include: Receive a first message sent by a network device; wherein the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier; During the system information modification cycle, the network device sends the first system information. If it is determined from the first system information that at least one piece of system information has been modified, the network device shall receive the at least one piece of system information.

2. The system information transmission method as described in claim 1, characterized in that, The set bit position includes a reserved bit in the downlink control information or a newly added bit in the downlink control information.

3. The system information transmission method as described in claim 1, characterized in that, When the downlink control information is scrambled with a non-terrestrial network paging radio network temporary identifier, the flag bit in the downlink control information indicating system information modification is used to indicate whether there is any modification to non-terrestrial network related system information.

4. The system information transmission method as described in claim 2, characterized in that, When the set bit position in the downlink control information is used to indicate modification of non-terrestrial network related system information, the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier.

5. The system information transmission method as described in claim 2, characterized in that, The set bit position is used to indicate the modification status of non-terrestrial network related system information; wherein, when the set bit position is a set character, it indicates modification of non-terrestrial network related system information.

6. The system information transmission method as described in claim 2, characterized in that, The reserved bits include bits 5 through 8 of the downlink control information.

7. The system information transmission method as described in claim 3, characterized in that, After receiving the first message sent by the network device, the method further includes: When the downlink control information is scrambled using a non-terrestrial network paging radio network temporary identifier, the first message is descrambled using the non-terrestrial network paging radio network temporary identifier to obtain the descrambled downlink control information; Read the flag indicating system information modification from the descrambled downlink control information; When the flag indicating system information modification in the downlink control information is set to a specific character, it is determined that there is modification of non-terrestrial network related system information, and the system information modification process is initiated.

8. The system information transmission method as described in claim 1, characterized in that, The value of the temporary identifier of the non-terrestrial network paging radio network is within a set value range; wherein, the set value range includes unused reserved values ​​within the value interval of the temporary identifier of the radio network.

9. The system information transmission method as described in claim 5, characterized in that, After receiving the first message sent by the network device, the method further includes: When the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, the first message is descrambled using the terrestrial network paging radio network temporary identifier to obtain the descrambled downlink control information; Read the set bit position in the descrambled downlink control information; When the set bit position in the downlink control information is a set character, it is determined that there is modification of non-terrestrial network related system information, and the system information modification process is initiated.

10. A system information transmission method, characterized in that, Applied to network devices, including: Broadcast a first message to all terminals within the cell; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier; Send the first system information; Send at least one system message; Specifically, during the system information modification period, if a terminal in the terrestrial network that supports non-terrestrial networks determines, based on the first system information obtained, that at least one piece of system information has been modified, it receives the at least one piece of system information.

11. The system information transmission method as described in claim 10, characterized in that, The set bit position includes a reserved bit in the downlink control information or a newly added bit in the downlink control information.

12. The system information transmission method as described in claim 10, characterized in that, When the downlink control information is scrambled with a non-terrestrial network paging radio network temporary identifier, the flag bit in the downlink control information indicating system information modification is used to indicate whether there is any modification to non-terrestrial network related system information.

13. The system information transmission method as described in claim 10, characterized in that, When the set bit position in the downlink control information is used to indicate modification of non-terrestrial network related system information, the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier.

14. The system information transmission method as described in claim 12, characterized in that, The first message is sent in the physical downlink control channel and is used to instruct all terminals in the cell to descramble the first message; In the case where the downlink control information is scrambled using a non-terrestrial network paging radio network temporary identifier, if a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the non-terrestrial network paging radio network temporary identifier, and the flag indicating system information modification in the downlink control information is a preset character, the system information modification process is initiated; if a terminal in the terrestrial network fails to descramble the first message using the terrestrial network paging radio network temporary identifier, the process ends. When the downlink control information is scrambled using the terrestrial network paging radio network temporary identifier, after a terminal in the terrestrial network that supports non-terrestrial networks successfully descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is set to a preset character, and the system information modification process is initiated; after the terminal in the terrestrial network descrambles the first message using the terrestrial network paging radio network temporary identifier, the set bit position in the downlink control information is ignored, and the process ends.

15. The system information transmission method as described in claim 11, characterized in that, The set bit position is used to indicate the modification status of non-terrestrial network related system information; wherein, when the set bit position is a set character, it indicates modification of non-terrestrial network related system information.

16. The system information transmission method as described in claim 11, characterized in that, The reserved bits include bits 5 through 8 of the downlink control information.

17. The system information transmission method as described in claim 11, characterized in that, The value of the temporary identifier of the non-terrestrial network paging radio network is within a set value range; wherein, the set value range includes unused reserved values ​​within the value interval of the temporary identifier of the radio network.

18. A system information transmission device, characterized in that, Terminals used in terrestrial networks that support non-terrestrial networks include: The first message receiving module is used to receive a first message sent by a network device; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier; The first system information receiving module is used to receive the first system information sent by the network device during the system information modification cycle; The second system information receiving module is used to receive the at least one piece of system information sent by the network device when it is determined from the first system information that at least one piece of system information has been modified.

19. A system information transmission device, characterized in that, Applied to network devices, including: The first message broadcast module is used to broadcast a first message to all terminals in the cell; wherein, the first message includes downlink control information, and the set bit position in the downlink control information is used to indicate the modification of non-terrestrial network related system information or the downlink control information is scrambled with a non-terrestrial network paging wireless network temporary identifier; The first system information sending module is used to send first system information; The second system information sending module is used to send the at least one piece of system information; Specifically, during the system information modification period, if a terminal in the terrestrial network that supports non-terrestrial networks determines, based on the first system information obtained, that at least one piece of system information has been modified, it receives the at least one piece of system information.

20. A system information transmission device, characterized in that, include: A processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements the system information transmission method as described in any one of claims 1 to 9 or the system information transmission method as described in any one of claims 10 to 17.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to perform the system information transmission method as described in any one of claims 1 to 9 or the system information transmission method as described in any one of claims 10 to 17.

22. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the system information transmission method as described in any one of claims 1 to 9 or the system information transmission method as described in any one of claims 10 to 17.

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