Information transmission method and device, communication equipment and storage medium

Abstract

The embodiment of the invention discloses an information transmission method and device, communication equipment and a storage medium. The method comprises the following steps: a terminal sends timing advance (TA) information under the condition that a first condition is met.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular, to an information transmission method, apparatus, communication device, and storage medium. Background Art

[0002] In relevant standardization work, research on capacity enhancement for the uplink of non-terrestrial networks (NTN) has been carried out. Among them, for the scenario of introducing lightweight (Redcap, Reduced Capability) user equipment (UE) with high-definition frequency division duplex (HD-FDD) into NTN, it is necessary to further handle the problem of uplink and downlink conflicts of half-duplex terminals.

[0003] The timing advance (TA) of terrestrial terminals is relatively small. Therefore, if it is an HD-FDD terminal, the TA of its uplink and the downlink propagation delay are relatively limited (the propagation delay is relatively small and relatively stable). In this case, the base station can know in which specific time slot the uplink and downlink conflicts will occur. From the perspective of the base station, it can further determine whether it is necessary to perform corresponding dynamic scheduling. However, for the satellite scenario, due to the high altitude of the satellite from the ground and the long propagation delay, the uplink TA and the downlink propagation delay are relatively large. At the same time, because the satellite is moving, the propagation time from the satellite to ground users also changes with the change of the satellite position. Therefore, in this scenario, if the base station cannot obtain the TA or propagation delay of the terminal in time, the base station cannot know when the uplink and downlink transmission conflicts of the terminal will occur, or at what resource position the uplink and downlink transmissions will conflict. Summary of the Invention

[0004] To solve the existing technical problems, embodiments of the present invention provide an information transmission method, apparatus, communication device, and storage medium.

[0005] To achieve the above object, the technical solution of the embodiments of the present invention is implemented as follows:

[0006] In a first aspect, embodiments of the present invention provide an information transmission method, which is applied to a terminal, and the method includes: the terminal sends timing advance (TA) information when a first condition is satisfied.

[0007] In the above solution, the satisfaction of the first condition includes one of the following:

[0008] The terminal receives first information, where the first information is used to indicate, request, configure, or enable the terminal to send timing advance (TA) information;

[0009] A first event is detected.

[0010] In the above solution, the first event includes at least one of the following:

[0011] There is data to be transmitted;

[0012] The change amount of the timing advance (TA) is greater than or equal to a preset threshold;

[0013] A situation where an uplink transmission and a downlink reception conflict is detected;

[0014] The time interval since the last or most recent transmission of the timing advance (TA) information is greater than or equal to a first preset duration;

[0015] The time interval since the last or most recent scheduling request for scheduling TA information transmission is greater than or equal to a second preset duration.

[0016] In the above solution, the terminal receiving the first information includes: the terminal receives downlink control information (DCI), a media access control control element (MAC CE), or radio resource control (RRC) signaling, and the first information is included in the downlink control information (DCI), the media access control control element (MAC CE), or the radio resource control (RRC) signaling.

[0017] In the above solution, the downlink control information (DCI) includes multiple fields, and the first field among the multiple fields is used to carry the first information.

[0018] In the above solution, the first field corresponds to the group to which the terminal belongs; and / or,

[0019] The first information is carried by the first field corresponding to the group where the terminal is located.

[0020] In the above solution, the method further includes: the terminal determines the group information corresponding to the terminal according to configuration information, or the terminal determines the position information of the first field in the downlink control information (DCI) according to first indication information.

[0021] In the above solution, the first information is carried by the first domain in the downlink control information (DCI).

[0022] In the above solution, when the downlink control information (DCI) is used to schedule uplink transmission or an uplink channel, the sending of the timing advance (TA) information includes:

[0023] The terminal sends the Timing Advance (TA) information through the Physical Uplink Shared Channel (PUSCH); or,

[0024] The terminal sends data, and the TA information is carried in the data.

[0025] In the above solution, when the Downlink Control Information (DCI) or MAC CE is used to schedule downlink transmission or downlink channel, sending the TA information includes:

[0026] The terminal sends the TA information through the PUSCH.

[0027] In the above solution, the method further includes: The terminal sends a scheduling request, and the scheduling request is used to request scheduling of the transmission of the TA.

[0028] In the above solution, the method further includes: When the terminal has an Uplink Grant (UL grant) or has available uplink resources, and the uplink resources can include TA reporting or TA report, the TA information is carried or multiplexed in the corresponding uplink transmission.

[0029] In a second aspect, an embodiment of the present invention further provides an information transmission method, which is applied to a network device, and the method includes:

[0030] The network device receives the TA information, and the TA information is sent when the terminal meets the first condition.

[0031] In the above solution, the first condition includes one of the following:

[0032] The terminal receives a first piece of information, and the first piece of information is used to indicate, request, configure or enable the terminal to send the TA information;

[0033] A first event is detected.

[0034] In the above solution, the method further includes: The network device sends a first piece of information, and the first piece of information is used to indicate, request, configure or enable the terminal to send the TA information.

[0035] In the above solution, the network device sending the first piece of information includes: The network device sends Downlink Control Information (DCI), Media Access Control Control Element (MAC CE) or Radio Resource Control (RRC) signaling, and the first piece of information is included in the DCI, MAC CE or RRC signaling.

[0036] In the above solution, the downlink control information (DCI) includes a plurality of fields, and the first field among the plurality of fields is used to carry the first information.

[0037] In the above solution, the first field corresponds to the group to which the terminal belongs; and / or, the first information is carried by the first field corresponding to the group where the terminal is located.

[0038] In the above solution, the first information is carried by the first domain in the downlink control information (DCI).

[0039] In the above solution, the method further includes: the network device receives a scheduling request, and the scheduling request is used to request scheduling of the transmission of the timing advance (TA).

[0040] In the above solution, when the downlink control information (DCI) is used to schedule an uplink transmission or an uplink channel, the network device receives timing advance (TA) information, including:

[0041] The network device receives the timing advance (TA) information sent through the physical uplink shared channel (PUSCH); or,

[0042] The network device receives data, and the data carries the timing advance (TA) information.

[0043] In the above solution, when the downlink control information (DCI) or the MAC CE is used to schedule a downlink transmission or a downlink channel, the network device receives timing advance (TA) information, including:

[0044] The network device receives the timing advance (TA) information sent through the physical uplink shared channel (PUSCH).

[0045] In a third aspect, an embodiment of the present invention further provides an information transmission device, which is applied to a terminal, and the device includes a first communication unit, configured to send timing advance (TA) information when a first condition is met.

[0046] In a fourth aspect, an embodiment of the present invention further provides an information transmission device, which is applied to a network device, and the device includes a second communication unit, configured to receive timing advance (TA) information, where the timing advance (TA) information is sent when a terminal meets a first condition.

[0047] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the information transmission method described in the first aspect or the second aspect of the embodiments of the present invention are implemented.

[0048] In a sixth aspect, an embodiment of the present invention further provides a communication device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the information transmission method according to the first aspect or the second aspect of the embodiments of the present invention are implemented.

[0049] In a seventh aspect, an embodiment of the present invention further provides a computer program product, including computer program instructions, which cause a computer to execute the steps of the information transmission method according to the first aspect or the second aspect of the embodiments of the present invention.

[0050] For the information transmission method, device, communication device, and storage medium provided by the embodiments of the present invention, when the terminal meets the first condition, it sends timing advance (TA) information. By adopting the technical solution of the embodiments of the present invention, the terminal can send TA information when meeting the first condition (a condition initiated by the network device or a condition initiated by the terminal itself), enabling the network device to obtain the TA (or propagation delay) between the terminal and the satellite in a timely manner, so that the network device can know that there may be an overlap in the uplink or downlink time slots (or resources) of the terminal, and then make a scheduling decision (to perform or not to perform a dynamic scheduling behavior), avoiding the problem that the terminal (especially a half-duplex terminal) cannot simultaneously perform uplink and downlink transmissions, further leading to transmission conflicts. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the distance from a satellite to a ground user in a LEO scenario;

[0052] Figures 2a to 2c It is a schematic diagram of the propagation delays of the uplink and the downlink;

[0053] Figure 3 It is a schematic flowchart of the information transmission method according to the embodiment of the present invention Figure 1 ;

[0054] Figure 4 It is a second schematic flowchart of the information transmission method according to the embodiment of the present invention;

[0055] Figure 5 It is a schematic structural diagram of the composition of the information transmission device according to the embodiment of the present invention Figure 1 ;

[0056] Figure 6 It is a second schematic structural diagram of the composition of the information transmission device according to the embodiment of the present invention;

[0057] Figure 7 It is a schematic hardware composition structural diagram of the communication device according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0059] The technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Long Term Evolution (LTE) system, 5G system, Non-Terrestrial Network (NTN), and even future communication systems (such as 6G system), etc. Optionally, the 5G system or 5G network can also be referred to as a New Radio (NR) system or NR network.

[0060] Exemplarily, the communication system to which the embodiments of the present invention are applied may include a network device and a terminal device (which may also be referred to as a terminal, a communication terminal, etc.); the network device may be a device that communicates with the terminal device. Among them, the network device can provide communication coverage within a certain area range and can communicate with terminals located in this area. Optionally, the network device may be a base station in each communication system, such as an Evolutional Node B (eNB) in the LTE system, or a base station (gNB) in the 5G system or NR system.

[0061] It should be understood that in the embodiments of the present application, a device with communication functions in a network / system may be referred to as a communication device. The communication device may include a network device and a terminal with communication functions. The network device and the terminal device may be the specific devices described above, which will not be elaborated here; the communication device may also include other devices in the communication system, such as other network entities such as a network controller and a mobility management entity. The embodiments of the present invention do not make limitations in this regard.

[0062] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0063] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented, for example, in an order other than those illustrated or described herein. In addition, the terms "comprising", "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0064] Before elaborating on the technical solutions of the embodiments of the present invention in detail, first, a brief description of the related technical solutions of the propagation delay of NTN and the terminal will be given.

[0065] A non-terrestrial network (NTN) is a wireless communication system operating above the earth's surface and is an important supplement to terrestrial cellular communication technology. NTN may include satellites in low earth orbit (LEO), medium earth orbit (MEO), and geostationary orbit (GEO), as well as high altitude platform stations (HAPS) and unmanned aerial vehicles, etc.

[0066] Exemplarily, Figure 1 is a schematic diagram of the distance from a satellite to a ground user in the LEO scenario; as Figure 1 shown, the distances from position A and position C to the ground are both 1,075 kilometers (km), then the propagation delay is approximately 1,075 km / the speed of light = 3.583 milliseconds (ms), then the timing advance (TA) = 7.167 ms, and the TA of 7 ms can be referred to Figure 2a shown. The distance from position B to the ground is 600 km, then the propagation delay is approximately 600 km / the speed of light = 2 ms, then the timing advance (TA) = 4 ms, and the TA of 4 ms can be referred to Figure 2b shown. The propagation delay between a ground user and a ground base station is approximately 500 meters / the speed of light = 1.667 microseconds (μs), then the timing advance (TA) = 3.33 μs, and the TA of 3.33 μs can be referred to Figure 2c shown.

[0067] According to Figure 1 and Figures 2a to 2cAs shown, at different positions, due to different propagation delays, the overlapping time of the uplink and downlink on the user equipment (UE) side is different, which results in the base station being unable to determine the moment when uplink and downlink collision transmissions occur on the base station side and it is difficult to judge the impact on the terminal.

[0068] In traditional technical solutions, when the UE accesses the satellite, the reporting of TA can be triggered. However, only reporting TA during initial access cannot solve the problem of TA changes during the service process. Additionally, the existing mechanism also supports TA reporting based on a threshold. If this mechanism is supported, the terminal will perform a TA report when the corresponding radio resource control (RRC) is configured. And when the subsequent TA changes and exceeds the configured threshold, a TA report will also be performed. But the problem with this method is that the users with TA changes may not necessarily be users with services, and users without services do not need to perform TA reporting; moreover, for the TA threshold, if the TA threshold is set too small, the terminal will have a large amount of TA reporting; while if the TA threshold is set too large, there may be a problem that the base station is unclear about the TA and the conflict time.

[0069] Based on this, an embodiment of the present invention provides an information transmission method, which is applied to a terminal. Figure 3 Flow schematic of the information transmission method according to the embodiment of the present invention Figure 1 ; As Figure 3 shown, the method includes:

[0070] Step 101: The terminal sends TA information when meeting the first condition.

[0071] In some optional embodiments, the meeting the first condition includes one of the following:

[0072] The terminal receives the first information, which is used to indicate, request, configure or enable the terminal to send TA information;

[0073] Detect the first event.

[0074] In this embodiment, the terminal receives the first information. Specifically, the terminal receives the first information sent by the network device, that is, the terminal can send TA information based on the indication, request, configuration, or enabling of the network device. Exemplarily, when the network device needs to initiate service transmission and to avoid conflicts with semi-statically configured transmissions, it is necessary to obtain TA information. Therefore, the network device can trigger the terminal to report TA information. In other alternative embodiments, the terminal sends TA information when detecting a first event, that is, the terminal actively reports TA information to the network device. Exemplarily, when the terminal has an uplink service transmission requirement, it can actively report TA information to the network device.

[0075] In some alternative embodiments, the terminal receiving the first information includes: the terminal receives downlink control information (DCI), a media access control control element (MAC CE), or radio resource control (RRC) signaling, and the first information is included in the DCI, MAC CE, or RRC signaling.

[0076] In this embodiment, the network device can indicate, request, configure, or enable the terminal to send TA information in various ways. For example, the network device can use one of DCI, MAC CE, and RRC signaling to indicate, request, configure, or enable the terminal to send TA information.

[0077] In some alternative embodiments, the DCI includes multiple fields, and the first field among the multiple fields is used to carry the first information.

[0078] In this embodiment, the first field included in the DCI is used to carry the first information. Exemplarily, the first information is, for example, 1 or 0. 0 indicates that the terminal does not need to report TA information, and 1 indicates that the terminal needs to report TA information.

[0079] It should be noted that the first field refers to a specific field in the DCI. Specifically, its position is configured by the corresponding RRC. The terminal finds the target field in the fields of the DCI according to the configured position and obtains the first information carried by the first field based on this field.

[0080] In some alternative embodiments, the first field corresponds to the group to which the terminal belongs; and / or, the first information is carried by the first field corresponding to the group where the terminal is located.

[0081] In this embodiment, a segmented indication method may be adopted, and multiple fields in the DCI are used to indicate, request, configure, or enable the terminal to send TA information. This implementation is applicable to pre-grouping terminals, where different groups may correspond to different fields in the DCI; then the terminal can read the first field corresponding to the group in the DCI according to the group it belongs to, and further obtain the first information.

[0082] In some alternative embodiments of the present invention, the method further includes: the terminal determines the group information corresponding to the terminal according to the configuration information, or the terminal determines the position information of the first field in the DCI according to the first indication information.

[0083] In this embodiment, as an implementation, the terminal can determine the group information corresponding to the terminal according to the configuration information, and then read the first field corresponding to the group in the DCI according to the group information. Among them, the configuration information can be agreed upon by the protocol, or it can also be the configuration information sent by the network device. Exemplarily, in the case where the configuration information is the configuration information sent by the network device, this configuration information can be carried by the RRC signaling. As another implementation, the terminal can determine the position information of the first field in the downlink control information DCI according to the first indication information sent by the network device, and then read the first field in the DCI. Exemplarily, the first indication information can be carried by the RRC signaling, DCI, or MAC CE. Further, the terminal can send or not send TA information according to the indication, request, configuration, or enabling of the first field.

[0084] In some other alternative embodiments, the first information is carried by the first domain in the DCI.

[0085] In this embodiment, the first domain may be a newly added domain (field) in the DCI, and the first information is carried by the newly added first domain to indicate, request, configure, or enable the terminal to send or not send TA information. Exemplarily, the first information is, for example, 1 or 0, where 0 indicates that the terminal does not need to report TA information, and 1 indicates that the terminal needs to report TA information.

[0086] In this embodiment, the first information is carried in the DCI for the uplink transmission or downlink transmission scheduled by the physical downlink control channel (PDCCH) specific to the terminal (UE specific), so that the network device only needs to schedule a user in a certain area (such as a certain wave position) to report the TA information set, and it is not necessary for all terminals or a group of terminals in this area to report TA information, avoiding duplicate or unnecessary TA reporting.

[0087] Among them, the PDCCH or physical downlink control channel can also be a channel for transmitting control information.

[0088] In traditional scheduling transmissions or in the signaling for scheduling downlink transmissions, there is no need to introduce the triggering or indication of uplink TA reporting. However, due to the situation of uplink and downlink conflicts in NTN, when the base station has a downlink transmission requirement, in order to avoid subsequent downlink scheduling being conflicted or cancelled due to conflicts, the triggering of uplink TA reporting can be introduced in the signaling for scheduling downlink transmissions. By carrying the first piece of information (such as indicating that the terminal reports TA) in the DCI for scheduling downlink transmissions, the network device can obtain the latest TA information for subsequent scheduling transmissions, avoiding the situation of uplink and downlink transmission conflicts (collision or overlap), thus avoiding the problem of dynamic uplink and downlink transmission conflicts. The problem of conflicts between subsequent semi-static uplink transmissions and semi-static downlink transmissions can also be solved through the reporting of TA.

[0089] In some alternative embodiments of the present invention, when the DCI is used to schedule uplink transmissions or uplink channels, the sending of TA information includes: the terminal sending the TA information through the physical uplink shared channel (PUSCH, Physical Uplink Shared Channel); or the terminal sending data, and the TA information is carried in the data.

[0090] In this embodiment, if the DCI is used to schedule uplink transmissions or uplink channels, that is, the DCI is used to schedule TA transmissions, the terminal can send the TA information on the PUSCH corresponding to the DCI or the nearest PUSCH after receiving the DCI, or the terminal can send data to the network device to carry the TA information through the data.

[0091] Among them, the DCI or downlink control information can also be information for downlink control.

[0092] Among them, the PUSCH can also refer to a channel for transmitting uplink data.

[0093] In some alternative embodiments of the present invention, when the DCI or MAC CE is used to schedule or indicate downlink transmissions or downlink channels, the sending of TA information includes: the terminal sending the timing advance TA information through the PUSCH. The DCI or MAC CE contains a request, configuration, enabling, or indication for TA sending.

[0094] In this embodiment, if DCI or MAC CE is used to schedule downlink transmission or downlink channel, the terminal may send the TA information on the PUSCH corresponding to the DCI or MAC CE, or the nearest PUSCH after the received DCI or MAC CE (or the nearest PUSCH that satisfies the first processing delay, or the PUSCH that satisfies the delay requirement).

[0095] In some alternative embodiments of the present invention, the method further includes: the terminal sends a scheduling request for requesting scheduling of the transmission of TA.

[0096] In this embodiment, if there is no PUSCH or data transmission after the terminal receives the first information, the terminal may send a scheduling request to the network device to request a transmission resource for TA information. Further, the terminal may send the TA information on the resource configured by the network device.

[0097] In some alternative embodiments of the present invention, the first event includes at least one of the following:

[0098] There is data to be transmitted;

[0099] The change amount of TA is greater than or equal to a preset threshold;

[0100] A situation where uplink transmission and downlink reception conflicts are detected;

[0101] The time interval from the last or the most recent transmission of TA information is greater than or equal to a first preset duration;

[0102] The time interval from the last or the most recent scheduling request for scheduling the transmission of TA information is greater than or equal to a second preset duration.

[0103] In this embodiment, for the manner in which the terminal actively sends TA information, the terminal may send the TA information when detecting the first event.

[0104] As a first implementation manner, the first event is that there is data to be transmitted, that is, when the terminal has an uplink service transmission requirement, it is determined that the first event is detected. Among them, exemplarily, that the terminal has data to be transmitted can also be described as the terminal sending a scheduling request (SR), indicating a request for resources for uplink data transmission or that the terminal is to transmit TA information in uplink PUSCH transmission; it can be understood that when the terminal sends an SR to the network device, it means that there is data to be transmitted, that is, the first event is detected. Among them, the SR is used for the resources of the PUSCH transmission requested, and the PUSCH is the PUSCH carrying TA information; while other PUSCHs will not carry TA information. Therefore, the SR in this embodiment is a specific SR (for example, denoted as the first SR), this specific SR (or the first SR) is different from other SRs, and this specific SR (or the first SR) can be configured by RRC signaling. In other embodiments, that the terminal has data to be transmitted can also be described as that the terminal's buffer has data, or the case where the buffer is not 0.

[0105] As a second implementation manner, the first event is that the change amount of TA is greater than or equal to a preset threshold, that is, the terminal configures or agrees on the threshold for TA change (that is, the preset threshold), and when the terminal detects that the change amount of TA is greater than or equal to the preset threshold (or threshold value), it is determined that the first event is detected.

[0106] As a third implementation manner, the first event is the situation where an uplink transmission and a downlink reception conflict are detected. The transmission and reception conflict can be further described as that the terminal indicates an uplink transmission based on DCI scheduling and a downlink reception based on scheduling at the same time in some symbol or time slot resources, and / or semi-static uplink transmission and semi-static downlink reception are configured on the corresponding symbol or time slot resources.

[0107] As a fourth implementation manner, the first event is that the time interval since the last or the most recent TA information transmission is greater than or equal to a first preset duration, or it can also be described as that the time interval since the last or the most recent TA information transmission is greater than or equal to the first preset duration; that is, after the terminal sends TA information once, a timer can be configured or started, and the timing time of this timer can be the first preset duration, then after the timer expires, the terminal can send TA information again, and the time interval between the transmissions of these two TA information is greater than or equal to the first preset duration.

[0108] As a fifth implementation manner, the first event is that the time interval since the last or the most recent scheduling request (SR) for scheduling TA information transmission is greater than or equal to a second preset duration, or it can also be described as that the time interval since the last or the most recent SR for scheduling TA information transmission is greater than or equal to the second preset duration; that is, after the terminal sends an SR for TA information transmission once, a timer can be configured or started, and the timing time of the timer can be the second preset duration. After the timer expires, the terminal can send an SR for TA information transmission again, and the time interval between the transmissions of these two SRs is greater than or equal to the second preset duration.

[0109] As a sixth implementation manner, the first event can also be a combination of at least two of the above events. Exemplarily, the first event can be that there is data to be transmitted and the change amount of TA is greater than or equal to a preset threshold, that is, when the terminal has data to be transmitted and the change amount of TA is greater than or equal to the preset threshold (threshold value), it is determined that the first event is detected.

[0110] In some alternative embodiments of the present invention, the method further includes: when the terminal has an uplink grant (UL grant) or uplink resources available, and the uplink resources can include TA reporting or TA reporting, carrying or multiplexing TA information in the corresponding uplink transmission.

[0111] In this embodiment, the uplink grant (UL grant) or having uplink resources can be resources such as PUSCH, UL-SCH, or data transmission that can carry TA information (such as TA report, TA report). If the terminal has resources of PUSCH, UL-SCH, or data, the terminal can carry TA information through PUSCH, UL-SCH, or data, or carry TA information in a field or domain for carrying TA information in the relevant resources (that is, multiplex TA information).

[0112] Based on the above embodiments, an embodiment of the present invention further provides an information transmission method, and the method is applied to a network device. Figure 4 It is a second flowchart of the information transmission method according to the embodiment of the present invention; as Figure 4 shown, the method includes:

[0113] Step 201: The network device receives TA information, and the TA information is sent when the terminal meets the first condition.

[0114] In some alternative embodiments, the first condition includes one of the following:

[0115] The terminal receives first information, where the first information is used to indicate, request, configure, or enable the terminal to send TA information;

[0116] A first event is detected.

[0117] In this embodiment, the terminal receiving the first information specifically means that the terminal receives the first information sent by the network device, that is, the terminal can be indicated, requested, configured, or enabled by the network device to send TA information. Exemplarily, when the network device wants to initiate service transmission, in order to avoid conflicts with semi-statically configured transmissions, it is necessary to obtain TA information. Therefore, the network device can trigger the terminal to report TA information. In other alternative embodiments, the terminal sends TA information when detecting the first event, that is, the terminal actively reports TA information to the network device. Exemplarily, when the terminal has an uplink service transmission requirement, it can actively report TA information to the network device.

[0118] In some alternative embodiments of the present invention, the method further includes: the network device sends first information, where the first information is used to indicate, request, configure, or enable the terminal to send TA information.

[0119] In some alternative embodiments, the network device sending the first information includes: the network device sends DCI, MAC CE, or RRC signaling, and the first information is included in the DCI, MAC CE, or RRC signaling.

[0120] In this embodiment, the network device can indicate, request, configure, or enable the terminal to send TA information in various ways. For example, the network device can indicate, request, configure, or enable the terminal to send TA information through one of DCI, MAC CE, and RRC signaling.

[0121] In some alternative embodiments, the DCI includes multiple fields, and a first field among the multiple fields is used to carry the first information.

[0122] In this embodiment, the first field included in the DCI is used to carry the first information. Exemplarily, the first information is, for example, 1 or 0. 0 indicates that the terminal does not need to report TA information, and 1 indicates that the terminal needs to report TA information.

[0123] It should be noted that the first field refers to a specific field in the DCI. Specifically, its position is configured by the corresponding RRC. The terminal finds the target field in the fields of the DCI according to the configured position and obtains the first information carried by the first field according to this field or position.

[0124] In some alternative embodiments, the first field corresponds to the group to which the terminal belongs; and / or, the first information is carried by the first field corresponding to the group where the terminal is located.

[0125] In this embodiment, a segmented indication method may be adopted, and multiple fields in the DCI are used to indicate, request, configure, or enable the terminal to send TA information. This embodiment is applicable to pre-grouping terminals, and different groups may correspond to different fields in the DCI; then the terminal can read the first field corresponding to the group in the DCI according to its own group, and further obtain the first information.

[0126] Exemplarily, the pre-grouping may determine the group corresponding to the terminal based on configuration information (such as RRC configuration) or indication information (such as the first indication information).

[0127] In some other alternative embodiments, the first information is carried by the first field in the DCI.

[0128] In this embodiment, the first field may be a newly added field in the DCI, and the first information is carried by the newly added first field to indicate, request, configure, or enable the terminal to send or not send TA information. Exemplarily, the first information is, for example, 1 or 0, where 0 indicates that the terminal does not need to report TA information, and 1 indicates that the terminal needs to report TA information.

[0129] In this embodiment, the first information is carried in the DCI for uplink transmission or downlink transmission dedicated to the terminal (UE specific) for PDCCH scheduling. In this way, the network device only needs to schedule a user in a certain area (such as a certain wave position) to report a TA information set, and it is not necessary for all terminals or a group of terminals in this area to report TA information, avoiding duplicate or unnecessary TA reporting.

[0130] Among them, the PDCCH or physical downlink control channel may also be a channel for transmitting control information.

[0131] In traditional scheduling transmissions or in the signaling for scheduling downlink transmissions, there is no need to introduce the trigger or indication for reporting the uplink TA. However, due to the situation of uplink and downlink conflicts in NTN, when the base station has a downlink transmission requirement, in order to avoid subsequent downlink scheduling being collided or cancelled due to conflicts, the trigger for reporting the uplink TA can be introduced in the signaling for scheduling downlink transmissions. By carrying the first information (such as indicating the terminal to report TA) in the DCI for scheduling downlink transmissions, the network device can obtain the latest TA information for subsequent scheduling transmissions, avoiding the situation of uplink and downlink transmission conflicts (collision or overlap), thus avoiding the problem of dynamic uplink and downlink transmission conflicts. It can also solve the problem of subsequent semi-static uplink and semi-static downlink transmission conflicts through the reporting of TA.

[0132] In some alternative embodiments of the present invention, the method further includes: the network device receives a scheduling request for requesting scheduling of the transmission of TA.

[0133] In this embodiment, if there is no PUSCH or data transmission after the terminal receives the first piece of information, the terminal may send a scheduling request to the network device to request a transmission resource for TA information. Further, the terminal may send TA information on the resource configured by the network device.

[0134] In some alternative embodiments of the present invention, when the DCI is used to schedule an uplink transmission or channel, the network device receiving TA information includes: the network device receives the TA information sent through the PUSCH; or, the network device receives data carrying the TA information.

[0135] In this embodiment, if the DCI is used to schedule an uplink transmission or uplink channel, that is, the DCI is used to schedule TA transmission, the terminal may send the TA information on the PUSCH corresponding to the DCI or the nearest PUSCH after receiving the DCI, that is, the network device receives the TA information sent through the PUSCH; or the terminal may send data to the network device to carry the TA information through the data, that is, the network device receives the data sent by the terminal carrying the TA information.

[0136] Wherein, the DCI or downlink control information may also be information for downlink control.

[0137] Wherein, the PUSCH may also refer to a channel for transmitting uplink data.

[0138] In some alternative embodiments of the present invention, when the DCI or MAC CE is used to schedule or indicate a downlink transmission or downlink channel, the network device receiving TA information includes: the network device receives the TA information sent through the PUSCH.

[0139] In this embodiment, if the DCI or MAC CE is used to schedule a downlink transmission or downlink channel, the terminal may send the TA information on the PUSCH corresponding to the DCI or MAC CE or the nearest PUSCH after receiving the DCI or MAC CE (or the nearest PUSCH satisfying the first processing delay or the PUSCH channel satisfying the delay requirement), then the network device may receive the TA information transmitted through the PUSCH corresponding to the DCI or MAC CE or receive the TA information transmitted through the nearest PUSCH after the DCI or MAC CE.

[0140] The information transmission method according to the embodiments of the present invention will be described below with specific examples.

[0141] Example 1

[0142] The network device sends packet-based DCI to indicate, request, configure, or enable the terminal to send TA information. In this example, the DCI includes multiple fields, and different groups to which the terminal belongs can correspond to different fields.

[0143] Among them, the terminal can determine that the group to which it belongs corresponds to the first field among the multiple fields in the DCI according to the configuration information or indication information (such as the configuration or indication of RRC signaling), and then read the first field in the DCI to obtain the first information carried by the first field, so as to send or not send TA information according to the first information.

[0144] Among them, the network device can group the terminals according to different beam coverage areas where the terminals are located, and send the grouping information to the terminals. Exemplarily, the grouping information can be the group identifier of the group where the terminal is located.

[0145] Exemplarily, the first information carried by the first field in the DCI is, for example, 1 or 0. 0 indicates that the terminal does not need to report TA information, and 1 indicates that the terminal needs to report TA information. If the first information indicates that the terminal needs to report TA information, the terminal can send the TA information on the PUSCH corresponding to the DCI or on the PUSCH closest to the DCI. If there is no subsequent PUSCH, the terminal sends an SR to the network device to request the transmission resource for TA information. Furthermore, the terminal can send TA information on the resource configured by the network device.

[0146] Example 2

[0147] The network device can use the uplink or downlink DCI scheduled by the terminal-specific PDCCH to indicate, request, configure, or enable the terminal to send TA information.

[0148] In this example, a domain (field) is included or newly added in the DCI, denoted as the first domain, and the first information is carried by the first domain to indicate, request, configure, or enable the terminal to send or not send TA information. Exemplarily, the first information is, for example, 1 or 0. 0 indicates that the terminal does not need to report TA information, and 1 indicates that the terminal needs to report TA information.

[0149] In the case where the DCI is used for the uplink scheduling of the terminal, if it is indicated that the terminal needs to report TA information, the terminal can send the TA information (or the PUSCH closest to the DCI that meets the first processing delay or the PUSCH channel that meets the delay requirement) on the PUSCH corresponding to the DCI or on the PUSCH closest to the DCI, and the TA information is included in the PUSCH; or, the terminal can carry the TA information in the uplink data, for example, fill the TA information in the uplink data to report it to the network device.

[0150] In the case where DCI is used to indicate the downlink scheduling or downlink transmission of a terminal, if it is indicated that the terminal needs to report TA information, the terminal may send the TA information on the PUSCH corresponding to the DCI (the DCI and the PUSCH have an association relationship, and it is agreed to be transmitted on the corresponding PUSCH) or on the PUSCH closest to the DCI; if there is no subsequent PUSCH, the terminal sends an SR to the network device to request a transmission resource for the TA information. Further, the terminal may send the TA information on the resources configured by the network device.

[0151] In this way, the network device only needs to schedule a user in a certain area (such as a certain wave position) to report a TA information set, and it is not necessary for all terminals or a group of terminals in this area to report TA information, avoiding repeated or unnecessary TA reporting.

[0152] Example 3

[0153] When the network device sends scheduling information about downlink transmission to the terminal, the first information (i.e., the request for TA reporting or transmission) may be carried in the corresponding MAC CE, that is, the network device sends a MAC CE to the terminal, and the first information is carried in the MAC CE. The MAC CE may be configuration or indication information for a terminal.

[0154] After receiving the MAC CE carrying the first information, the terminal may send the TA information on the PUSCH corresponding to the MAC CE or on the PUSCH closest to the MAC CE. If there is no subsequent PUSCH (no PUSCH resource is allocated), the terminal sends an SR to the network device to request a transmission resource for the TA information. Further, the terminal may send the TA information on the resources configured by the network device.

[0155] The above examples are for TA information reporting triggered by the network device.

[0156] Example 4

[0157] When the terminal has an uplink service transmission requirement, that is, when the terminal detects a first event, it sends TA information to the network device. Among them, the terminal having an uplink service transmission requirement can also be referred to as the data of the terminal's BSR (Buffer Status Reporting) being available for transmission.

[0158] Exemplarily, when the terminal has data to be transmitted, it can also be described as the terminal sending an SR, which means requesting resources for uplink data transmission or the terminal needs to transmit TA information in the uplink PUSCH transmission; it can be understood that when the terminal sends an SR to the network device, it means there is data to be transmitted. Among them, the SR is used for the resources of the PUSCH transmission requested, and this PUSCH is the PUSCH carrying TA information; while other PUSCHs will not carry TA information. Therefore, the SR in this embodiment is a specific SR (for example, denoted as the first SR), this specific SR (or the first SR) is different from other SRs, and this specific SR (or the first SR) can be configured through RRC signaling.

[0159] Exemplarily, the terminal can send TA information through the PUSCH or the uplink shared channel or the uplink scheduling channel (UL-SCH). If there is no subsequent PUSCH (resources of the PUSCH are not allocated) or UL-SCH (resources of the UL-SCH are not allocated) later, then the terminal sends an SR to the network device to request the transmission resources of TA information. Further, the terminal can send TA information on the resources configured by the network device. If the terminal has no data to be transmitted, the terminal does not send an SR.

[0160] In this example, when the terminal has data to be transmitted, it can send TA information to the network device without configuring the corresponding threshold for TA change.

[0161] Example 5

[0162] When the terminal has an uplink service transmission requirement and the change amount of the TA is greater than or equal to a preset threshold, that is, when the terminal detects the first event, it sends TA information to the network device.

[0163] In this way, when the change amount of the TA is greater than or equal to the preset threshold, if the terminal has no uplink service transmission requirement at this time, reporting TA information is not beneficial and will instead occupy more scheduling requests or uplink resources. Therefore, when the terminal has an uplink service transmission requirement and the change amount of the TA is greater than or equal to the preset threshold, the terminal reports TA information.

[0164] Exemplarily, the terminal can send TA information through the PUSCH or the uplink shared channel or the uplink scheduling channel (UL-SCH). If there is no subsequent PUSCH (resources of the PUSCH are not allocated) or UL-SCH (resources of the UL-SCH are not allocated) later, then the terminal sends an SR to the network device to request the transmission resources of TA information. Furthermore, the terminal can send TA information on the resources configured by the network device.

[0165] Based on the above embodiments, the embodiments of the present invention further provide an information transmission device, and the device is applied to a terminal. Figure 5 Schematic diagram of the composition structure of the information transmission device according to the embodiments of the present inventionFigure 1 ; As Figure 5 shown, the device includes a first communication unit 31, which is used to send TA information when a first condition is satisfied.

[0166] In some alternative embodiments of the present invention, the satisfaction of the first condition includes one of the following:

[0167] The terminal receives first information, which is used to indicate, request, configure, or enable the terminal to send TA information;

[0168] A first event is detected.

[0169] In some alternative embodiments of the present invention, the first event includes at least one of the following:

[0170] There is data to be transmitted;

[0171] The change amount of the TA is greater than or equal to a preset threshold;

[0172] A situation where an uplink transmission and a downlink reception conflict is detected;

[0173] The time interval since the last or the most recent transmission of TA information is greater than or equal to a first preset duration;

[0174] The time interval since the last or the most recent scheduling request for scheduling the transmission of TA information is greater than or equal to a second preset duration.

[0175] In some alternative embodiments of the present invention, the first communication unit 31 is used to receive downlink control information (DCI), media access control control element (MAC CE), or radio resource control (RRC) signaling, and the first information is included in the downlink control information (DCI), media access control control element (MAC CE), or radio resource control (RRC) signaling.

[0176] In some alternative embodiments of the present invention, the downlink control information (DCI) includes multiple fields, and the first field in the multiple fields is used to carry the first information.

[0177] In some alternative embodiments of the present invention, the first field corresponds to the group to which the terminal belongs; and / or, the first information is carried by the first field corresponding to the group where the terminal is located.

[0178] In some alternative embodiments of the present invention, the device further includes a first processing unit 32, which is used to determine the group information corresponding to the terminal according to configuration information, or the terminal determines the position information of the first field in the downlink control information (DCI) according to first indication information.

[0179] In some alternative embodiments of the present invention, the first information is carried by a first field in the downlink control information (DCI).

[0180] In some alternative embodiments of the present invention, when the downlink control information (DCI) is used to schedule an uplink transmission or an uplink channel, the first communication unit 31 is configured to send the TA information via a PUSCH; or is configured to send data, where the TA information is carried in the data.

[0181] In some alternative embodiments of the present invention, when the downlink control information (DCI) or MAC CE is used to schedule a downlink transmission or a downlink channel, the first communication unit 31 is configured to send the TA information via a PUSCH.

[0182] In some alternative embodiments of the present invention, the first communication unit 31 is further configured to send a scheduling request for requesting scheduling of the transmission of the timing advance TA.

[0183] In some alternative embodiments of the present invention, the first communication unit 31 is further configured to carry or multiplex TA information in a corresponding uplink transmission when the terminal has an uplink grant (UL grant) or uplink resources available, and the uplink resources can include TA reporting or TA reporting.

[0184] In an embodiment of the present invention, the first processing unit 32 in the device may be implemented by a central processing unit (CPU, Central Processing Unit), a digital signal processor (DSP, Digital Signal Processor), a microcontroller unit (MCU, Microcontroller Unit), or a field-programmable gate array (FPGA, Field-Programmable Gate Array) in practical applications; the first communication unit 31 in the device may be implemented by a communication module (including: a basic communication suite, an operating system, a communication module, a standardized interface, and a protocol, etc.) and a transceiver antenna in practical applications.

[0185] An embodiment of the present invention further provides an information transmission device, and the device is applied to a network device. Figure 6 This is the second schematic diagram of the composition structure of the information transmission device according to the embodiment of the present invention; as Figure 6 shown, the device includes a second communication unit 41 configured to receive TA information, where the TA information is sent when the terminal meets a first condition.

[0186] In some alternative embodiments of the present invention, the first condition includes one of the following:

[0187] The terminal receives first information, where the first information is used to indicate, request, configure, or enable the terminal to send TA information;

[0188] A first event is detected.

[0189] In some alternative embodiments of the present invention, the second communication unit 41 is configured to send first information, where the first information is used to indicate, request, configure, or enable the terminal to send TA information.

[0190] In some alternative embodiments of the present invention, the second communication unit 41 is configured to send downlink control information (DCI), media access control control element (MAC CE), or radio resource control (RRC) signaling, and the first information is included in the downlink control information (DCI), media access control control element (MAC CE), or radio resource control RRC signaling.

[0191] In some alternative embodiments of the present invention, the downlink control information DCI includes multiple fields, and a first field among the multiple fields is used to carry the first information.

[0192] In some alternative embodiments of the present invention, the first field corresponds to the packet to which the terminal belongs; and / or, the first information is carried through the first field corresponding to the packet where the terminal is located.

[0193] In some alternative embodiments of the present invention, the first information is carried through a first domain in the downlink control information (DCI).

[0194] In some alternative embodiments of the present invention, the second communication unit 41 is configured to receive a scheduling request, where the scheduling request is used to request scheduling of the transmission of TA.

[0195] In some alternative embodiments of the present invention, when the DCI is used to schedule an uplink transmission or an uplink channel, the second communication unit 41 is configured to receive the TA information sent through the PUSCH; or, is configured to receive data, where the TA information is carried in the data.

[0196] In some alternative embodiments of the present invention, when the DCI or MAC CE is used to schedule a downlink transmission or a downlink channel, the second communication unit 41 is configured to receive the TA information sent through the PUSCH.

[0197] In an embodiment of the present invention, the second communication unit 41 in the device can be implemented through a communication module (including: a basic communication suite, an operating system, a communication module, a standardized interface, and protocols, etc.) and a transceiver antenna in practical applications.

[0198] It should be noted that: when the information transmission device provided in the above embodiment performs information transmission, only the division of the above program modules is used for illustration. In practical applications, the above processing can be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device provided in the above embodiment and the information transmission method embodiment belong to the same concept. For the specific implementation process, please refer to the method embodiment and will not be elaborated here.

[0199] An embodiment of the present invention further provides a communication device, and the communication device is a terminal or a network device. Figure 7 It is a schematic diagram of the hardware composition structure of the communication device according to the embodiment of the present invention. As Figure 7 shown, the communication device includes a memory 52, a processor 51, and a computer program stored on the memory 52 and executable on the processor 51. When the processor 51 executes the program, it implements the steps of the information transmission method applied to the terminal or the network device according to the embodiment of the present invention.

[0200] Optionally, the communication device may further include at least one network interface 53. Each component in the communication device is coupled together through a bus system 54. It can be understood that the bus system 54 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 54 further includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, in Figure 7 all kinds of buses are labeled as the bus system 54.

[0201] It can be understood that the memory 52 can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM), a synchronous static random access memory (SSRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a sync link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM).The memory 52 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memories.

[0202] The method disclosed in the embodiments of the present invention above can be applied to the processor 51 or implemented by the processor 51. The processor 51 may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method can be completed by the integrated logic circuit in the hardware of the processor 51 or by instructions in the form of software. The above-mentioned processor 51 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 51 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present invention, it can be directly embodied as being executed and completed by the hardware decoding processor, or by a combination of the hardware and software modules in the decoding processor. The software module may be located in the storage medium, which is located in the memory 52. The processor 51 reads the information in the memory 52 and combines its hardware to complete the steps of the foregoing method.

[0203] In an exemplary embodiment, the communication device can be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the foregoing method.

[0204] In an exemplary embodiment, the embodiments of the present invention also provide a computer-readable storage medium, such as the memory 52 including a computer program, and the above computer program can be executed by the processor 51 of the communication device to complete the steps of the foregoing method. The computer-readable storage medium may be a FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.; or it may be various devices including one or any combination of the above memories.

[0205] The computer-readable storage medium provided by the embodiments of the present invention stores a computer program thereon, and when the program is executed by the processor, it implements the steps of the information transmission method of the embodiments of the present invention applied to a terminal or a network device.

[0206] The embodiment of the present application also provides a computer program product, including a computer program, which can be executed by a communication device (such as the processor 51 of the communication device) to complete the steps of any of the foregoing information transmission methods.

[0207] The methods disclosed in several method embodiments provided by the present application can be arbitrarily combined without conflict to obtain new method embodiments.

[0208] The features disclosed in several product embodiments provided by the present application can be arbitrarily combined without conflict to obtain new product embodiments.

[0209] The features disclosed in several method or device embodiments provided by the present application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0210] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed with each other can be through some interfaces. The indirect coupling or communication connection of the devices or units can be electrical, mechanical, or other forms.

[0211] The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0212] In addition, in each embodiment of the present invention, the various functional units can all be integrated into one processing unit, or each unit can be separately regarded as one unit, or two or more units can be integrated into one unit; the above integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

[0213] Those of ordinary skill in the art can understand that all or part of the steps of implementing the foregoing method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the foregoing method embodiments; and the foregoing storage medium includes: various media such as removable storage devices, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0214] Alternatively, if the above integrated units of the present invention are implemented in the form of software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: various media such as removable storage devices, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0215] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An information transmission method, characterized in that, The method is applied to a terminal, and the method includes: When the terminal meets the first condition, it sends Timing Advance (TA) information.

2. The method according to claim 1, wherein The meeting of the first condition includes one of the following: The terminal receives first information, which is used to indicate, request, configure, or enable the terminal to send Timing Advance (TA) information; A first event is detected.

3. The method according to claim 2, wherein The first event includes at least one of the following: There is data to be transmitted; The change amount of the Timing Advance (TA) is greater than or equal to a preset threshold; A situation of uplink transmission and downlink reception conflict is detected; The time interval from the last or the most recent transmission of the Timing Advance (TA) information is greater than or equal to a first preset duration; The time interval from the last or the most recent scheduling request for scheduling the transmission of TA information is greater than or equal to a second preset duration.

4. The method according to claim 2, wherein The terminal's receiving the first information includes: The terminal receives Downlink Control Information (DCI), Medium Access Control Control Element (MAC CE), or Radio Resource Control (RRC) signaling, and the first information is included in the Downlink Control Information (DCI), Medium Access Control Control Element (MAC CE), or Radio Resource Control (RRC) signaling.

5. The method according to claim 4, wherein The Downlink Control Information (DCI) includes multiple fields, and the first field among the multiple fields is used to carry the first information.

6. The method according to claim 5, characterized in that, The first field corresponds to the group to which the terminal belongs; and / or, The first information is carried through the first field corresponding to the group where the terminal is located.

7. The method according to claim 6, characterized in that, The method further includes: The terminal determines the group information corresponding to the terminal according to the configuration information, or the terminal determines the position information of the first field in the Downlink Control Information (DCI) according to the first indication information.

8. The method according to claim 4, characterized in that The first information is carried through the first domain in the Downlink Control Information (DCI).

9. The method according to claim 4, characterized in that When the Downlink Control Information (DCI) is used to schedule uplink transmission or uplink channel, the sending of the Timing Advance (TA) information includes: The terminal sends the Timing Advance (TA) information through the Physical Uplink Shared Channel (PUSCH); or, The terminal sends data, and the Timing Advance (TA) information is carried in the data.

10. The method according to claim 4, characterized in that, When the Downlink Control Information (DCI) or MAC CE is used to schedule downlink transmission or downlink channel, the sending of the Timing Advance (TA) information includes: The terminal sends the Timing Advance (TA) information through the PUSCH.

11. The method according to claim 1, characterized in that, The method further includes: The terminal sends a scheduling request, which is used to request scheduling for the transmission of the Timing Advance (TA).

12. The method according to claim 1, wherein The method further includes: When the terminal has an uplink grant (UL grant) or has available uplink resources, and the uplink resources can include TA reporting or TA reporting, the TA information is carried or multiplexed in the corresponding uplink transmission.

13. An information transmission method, characterized in that, The method is applied to a network device, and the method includes: The network device receives Timing Advance (TA) information, which is sent when the terminal meets the first condition.

14. The method according to claim 13, wherein The first condition includes one of the following: The terminal receives first information, which is used to indicate, request, configure, or enable the terminal to send Timing Advance (TA) information; A first event is detected.

15. The method according to claim 13 or 14, characterized in that The method further includes: The network device sends first information, where the first information is used to indicate, request, configure, or enable the terminal to send Timing Advance (TA) information.

16. The method according to claim 15, wherein The network device sending the first information includes: The network device sends downlink control information (DCI), media access control control element (MAC CE), or radio resource control (RRC) signaling, and the first information is included in the DCI, MAC CE, or RRC signaling.

17. The method according to claim 16, wherein The DCI includes multiple fields, and a first field among the multiple fields is used to carry the first information.

18. The method according to claim 17, wherein The first field corresponds to the packet to which the terminal belongs; and / or, The first information is carried through the first field corresponding to the packet where the terminal is located.

19. The method according to claim 16, wherein The first information is carried through the first field in the DCI.

20. The method according to claim 13, wherein The method further includes: The network device receives a scheduling request, where the scheduling request is used to request scheduling of the transmission of Timing Advance (TA).

21. The method according to claim 16, wherein When the DCI is used to schedule uplink transmission or an uplink channel, the network device receiving the TA information includes: The network device receives the TA information sent through a physical uplink shared channel (PUSCH); or, The network device receives data, and the TA information is carried in the data.

22. The method according to claim 16, wherein When the DCI or MAC CE is used to schedule downlink transmission or a downlink channel, the network device receiving the TA information includes: The network device receives the TA information sent through a physical uplink shared channel (PUSCH).

23. An information transmission device, characterized in that, The apparatus is applied to a terminal, and the apparatus includes a first communication unit, which is used to send TA information when a first condition is met.

24. An information transmission device, characterized in that, The apparatus is applied to a network device, and the apparatus includes a second communication unit, which is used to receive TA information sent when a terminal meets a first condition.

25. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 12; or, when the program is executed by a processor, it implements the steps of the method according to any one of claims 13 to 22.

26. A communication device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method according to any one of claims 1 to 12; or, when the processor executes the program, it implements the steps of the method according to any one of claims 13 to 22.

27. A computer program product, characterized in that, It includes computer program instructions, and the computer program instructions cause the computer to execute the steps of the method according to any one of claims 1 to 12; or, the computer program instructions cause the computer to execute the steps of the method according to any one of claims 13 to 22.

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