Frequency-division half-duplex transmission conflict adjustment method and device in non-ground network scene and data transmission system

Abstract

The invention discloses a frequency division half-duplex transmission conflict adjustment method and device in a non-ground network scene and a data transmission system, and belongs to the technical field of wireless communication networks. The method comprises the following steps: determining an uplink timing advance at a prediction moment according to received ephemeris information sent by a base station; sending an enhanced timing advance report to the base station according to the uplink timing advance at each prediction moment; and receiving an enhanced high-level signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjusting an uplink transmission opportunity according to the enhanced high-level signaling. According to the technical scheme, the terminal can enable the base station to recognize the transmission conflict in time by executing the preset selection strategy, can help the base station to predict the occurrence of the transmission conflict by sending the enhanced timing advance report including the timing advance of the prediction moment, and can help the base station to indicate and adjust the semi-static uplink transmission opportunity, so that the user experience is improved. Therefore, transmission conflicts are avoided.

Description

Technical Field

[0001] The present application belongs to the field of wireless communication network technology, and specifically relates to a transmission conflict adjustment method, device, medium and data transmission system for frequency division half-duplex in a non-terrestrial network scenario. Background Art

[0002] The terminal adopts RedCap (Reduced Capability) technology, which can simplify hardware configuration and software processing, significantly reduce communication power consumption, and meet certain real-time data transmission requirements. Among them, HD-FDD (Half-Duplex Frequency-Division Duplex) is one of the key features of RedCap technology, that is, the uplink transmission channel and the downlink reception channel are separated in frequency, and the terminal cannot perform uplink transmission and downlink reception operations at the same time, but can only transmit data in one direction at a time.

[0003] Non-Terrestrial Network refers to a wireless network carried by artificial satellites or unmanned aircraft system platforms. Compared with traditional ground communications, NTN features can provide good supplementary services, such as coverage blind spots, large-scale broadcasting, and support for high-speed mobile users (such as passengers in passenger planes and other transportation vehicles). NTN technology implements payload transparent transmission or payload regeneration on satellites or high-altitude UAS platforms, generates communication beams and forms an elliptical irradiation area in the service area, forming service coverage for users. For satellite payloads in non-synchronous orbits NGSO, especially low earth orbits LEO, a notable feature is that the relative distance between the satellite and the ground terminal will change with the orbital motion of the satellite.

[0004] The combination of the above two factors, that is, the RedCap terminal deployed in the NTN network, will face the following special scenario challenges. Due to the large distance between the satellite and the ground, the terminal needs to set a larger timing advance (Timing Advance) for the uplink signal to offset the impact of the satellite-to-ground propagation delay. As the satellite-to-ground distance changes, the length of the TA can range from a few time slots to dozens of time slots, so the correspondence between the terminal's downlink time slot number and the uplink time slot number at the same time will also change continuously. If the UE is configured with semi-static downlink transmission and semi-static uplink transmission at the same time, the downlink transmission and uplink transmission that would not collide at the same time may overlap in time due to the change of TA, and the HD-FDD duplex limitation of the RedCap terminal will cause transmission conflicts.

[0005] Therefore, how to identify transmission conflicts in a timely manner and avoid the occurrence of transmission conflicts is a problem that people in this field need to solve urgently. Summary of the invention

[0006] The present application provides a transmission conflict adjustment method, device and data transmission system for frequency division half-duplex in a non-terrestrial network scenario, with the aim of enabling a base station to identify transmission conflicts in a timely manner, helping the base station to predict the occurrence of transmission conflicts, and helping the base station to instruct the adjustment of the semi-static uplink transmission timing, thereby avoiding the occurrence of transmission conflicts.

[0007] In a first aspect, the present application provides a transmission conflict adjustment method for frequency division half-duplex in a non-terrestrial network scenario, the method being executed by a terminal, the terminal performing data transmission with a base station, the terminal adopting a frequency division half-duplex mode, and the base station providing network coverage to the terminal through a non-synchronous orbit satellite payload; the method comprising:

[0008] Determine the uplink timing advance at the predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information;

[0009] sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment;

[0010] receiving enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjusting uplink transmission timing according to the enhanced high-layer signaling.

[0011] In a second aspect, the present application provides a transmission conflict adjustment method for frequency division half-duplex in a non-terrestrial network scenario, the method being executed by a base station, the base station performing data transmission with a terminal, the terminal adopting a frequency division half-duplex mode, and the base station providing network coverage to the terminal through a non-synchronous orbit satellite payload; the method comprising:

[0012] receiving an enhanced timing advance report sent by the terminal, and predicting whether a transmission conflict occurs according to the enhanced timing advance report;

[0013] When a transmission conflict is predicted to occur, enhanced high-layer signaling is sent to the terminal to adjust the uplink transmission timing.

[0014] In a third aspect, the present application provides a transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario, wherein the device is configured in a terminal, data is transmitted between the terminal and a base station, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload; the device includes:

[0015] An advance prediction module is used to determine the uplink timing advance at the predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information;

[0016] An enhanced report sending module, configured to send an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment;

[0017] The uplink transmission adjustment module is used to receive enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjust the uplink transmission timing according to the enhanced high-layer signaling.

[0018] In a fourth aspect, the present application provides a transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario, wherein the device is configured in a base station, data is transmitted between the base station and a terminal, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload; the device includes:

[0019] a transmission conflict prediction module, configured to receive an enhanced timing advance report sent by the terminal, and predict whether a transmission conflict occurs according to the enhanced timing advance report;

[0020] The high-layer signaling sending module is used to send enhanced high-layer signaling to the terminal in the case of predicting that a transmission conflict occurs, so as to adjust the uplink transmission timing.

[0021] In a fifth aspect, the present application provides a data transmission system, which includes a terminal and a base station, and data is transmitted between the terminal and the base station; the terminal adopts a frequency division half-duplex mode, and the terminal implements the steps of the frequency division half-duplex transmission conflict adjustment method in a non-ground network scenario as described in the first aspect; the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload, and the base station implements the steps of the frequency division half-duplex transmission conflict adjustment method in a non-ground network scenario as described in the second aspect.

[0022] In the present application, the uplink timing advance at the predicted moment is determined based on the received ephemeris information sent by the base station and the terminal navigation positioning information; an enhanced timing advance report is sent to the base station based on the uplink timing advance at each predicted moment; enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report is received, and the uplink transmission timing is adjusted according to the enhanced high-layer signaling. In the above-mentioned frequency-division half-duplex transmission conflict adjustment method in the non-terrestrial network scenario, the terminal can enable the base station to identify the transmission conflict in time by executing a preset trade-off strategy, and can help the base station predict the occurrence of a transmission conflict by sending an enhanced timing advance report including the timing advance at the predicted moment, and can help the base station instruct to adjust the semi-static uplink transmission timing, thereby avoiding the occurrence of a transmission conflict. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a flow chart of a method for adjusting transmission conflicts in frequency division half-duplex in a non-terrestrial network scenario provided in the first embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of the first situation where there is a transmission conflict between the uplink sending period and the downlink receiving period provided in the first embodiment of the present application;

[0025] Figure 3 It is a schematic diagram of the second situation in which there is a transmission conflict between the uplink sending period and the downlink receiving period provided in the first embodiment of the present application;

[0026] Figure 4 is a schematic diagram of a timing advance report provided in Embodiment 1 of the present application;

[0027] Figure 5 It is a flow chart of a transmission conflict adjustment method for frequency division half-duplex in a non-terrestrial network scenario provided in Embodiment 2 of the present application;

[0028] Figure 6 It is a flow chart of a method for adjusting transmission conflicts in frequency division half-duplex in a non-terrestrial network scenario provided in Embodiment 3 of the present application;

[0029] Figure 7 It is a schematic diagram of an enhanced timing advance report in the first enhanced reporting format provided in Embodiment 3 of the present application;

[0030] Figure 8 It is a schematic diagram of an enhanced timing advance report in the second enhanced reporting format provided in Embodiment 3 of the present application;

[0031] Fig. 9 It is a flow chart of a method for adjusting transmission conflicts in frequency division half-duplex in a non-terrestrial network scenario provided in Embodiment 4 of the present application;

[0032] Fig.10 It is a schematic diagram of enhanced high-layer signaling of a MAC CE control unit for target adjustment of a physical channel provided in Embodiment 4 of the present application;

[0033] Fig.11 It is a flow chart of a method for adjusting transmission conflicts in frequency division half-duplex in a non-terrestrial network scenario provided in Embodiment 5 of the present application;

[0034] Fig.12 It is a structural schematic diagram of a transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario provided in Embodiment 6 of the present application;

[0035] Fig.13 It is a structural schematic diagram of a transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario provided in Embodiment 7 of the present application;

[0036] Fig.14 It is a structural diagram of the data transmission system provided in Example 8 of the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all the contents are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0039] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0040] In combination with the accompanying drawings, the transmission conflict adjustment method, device and data transmission system of frequency division half-duplex in a non-terrestrial network scenario provided by the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0041] Embodiment 1

[0042] Figure 1 1 is a flow chart of a method for adjusting transmission conflicts in a frequency division half-duplex transmission in a non-terrestrial network scenario provided in the first embodiment of the present application. Figure 1 As shown, the specific steps include:

[0043] First of all, the present application is applicable to the scenario where the terminal adopts the frequency division half-duplex mode for uplink transmission and downlink reception. Based on the above usage scenarios, it can be understood that the execution subject of the present application can be the terminal. Specifically, the transmission of the enhanced timing advance report and the adjustment of the uplink transmission timing can be performed by the terminal, and the transmission conflict between the uplink transmission period and the downlink reception period after the adjustment is reduced, avoiding problems such as data loss or communication interruption caused by transmission conflicts, thereby ensuring the stability of terminal communication and the efficiency of data transmission.

[0044] A terminal (UE, User Equipment) may refer to an electronic device that has computing power and Internet connection capability and establishes a communication connection with a base station, such as a desktop computer, laptop computer, mobile phone, tablet computer, and interactive multimedia device. A base station (gNodeB) may refer to a device used to provide wireless signal coverage and communication services.

[0045] NTN (Non-Terrestrial Network) refers to a network that provides wireless communication services using non-traditional means (such as satellites, airships, and drones). Compared with traditional terrestrial networks, NTN has the advantages of wide-area coverage, rapid deployment, and elastic expansion, and can provide communication services in remote areas, disaster areas, or temporary activity sites. In this solution, the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload, which belongs to the category of NTN.

[0046] RedCap (Reduced Capability) is a lightweight IoT technology introduced by 3GPP (3rd Generation Partnership Project) in Release 17, which aims to meet the strict requirements of cost and power consumption in specific IoT scenarios while ensuring certain data transmission performance. The terminal adopts RedCap technology, which can simplify hardware configuration, significantly reduce power consumption, extend battery life, and meet certain real-time data transmission requirements.

[0047] HD-FDD (Half-Duplex Frequency-Division Duplex) is one of the key features of RedCap technology. In the traditional frequency division duplex (FDD) mode, the communicating parties use two different frequency channels, one for uplink (from the terminal to the base station) and the other for downlink (from the base station to the terminal). The two channels are separated in frequency, allowing data to be transmitted in both directions at the same time; however, in HD-FDD, although two different frequency channels are still used to distinguish between uplink and downlink, the terminal cannot perform uplink transmission and downlink reception operations at the same time, but can only transmit data in one direction at a time, that is, half-duplex mode.

[0048] A non-synchronous orbit satellite may refer to a satellite whose operating cycle is inconsistent with the Earth's rotation cycle. Due to the inconsistency between the operating cycle of a non-synchronous orbit satellite and the Earth's rotation cycle, the satellite-to-ground link between the base station and the terminal is constantly changing, resulting in a constant change in the satellite-to-ground propagation delay, which in turn causes the terminal's uplink timing advance to constantly change.

[0049] Among them, the satellite-to-ground link may refer to a wireless link for transmitting signals between a base station on a low-orbit satellite and a terminal; the satellite-to-ground propagation delay may refer to the time required for a wireless signal to be transmitted from a transmitting end to a receiving end, which is the delay time for a wireless signal to propagate in a transmission medium. The satellite-to-ground propagation delay is determined by the propagation speed and transmission distance of the wireless signal; the uplink sending period may refer to the time interval set for a terminal to send data to a base station on a low-orbit satellite; the downlink receiving period may refer to the time interval set for a terminal to receive data sent by a base station on a low-orbit satellite; the uplink timing advance (TA, Timing Advance) may refer to the time advance for a terminal to send an uplink signal in order to compensate for the satellite-to-ground propagation delay of a signal in the satellite-to-ground link transmission and ensure that the uplink signal sent by the terminal can accurately reach the base station.

[0050] The transmission conflict between the uplink transmission period and the downlink reception period may refer to the situation where the uplink transmission period and the downlink reception period overlap and conflict in time. The function of TA is to allow the terminal to send the uplink signal in advance to ensure that the uplink signal can reach the base station at the expected time. If TA is too large, the terminal will send the uplink signal too early, and the uplink signal will enter the previous downlink reception period in advance, resulting in a transmission conflict between the uplink transmission period and the downlink reception period; if TA is too small, the terminal will send the uplink signal too late, and the uplink signal will delay entering the next downlink reception period, resulting in a transmission conflict between the uplink transmission period and the downlink reception period.

[0051] Figure 2 1 is a schematic diagram of the first case where there is a transmission conflict between the uplink transmission period and the downlink reception period provided in the first embodiment of the present application. Figure 2 As shown, the light grey area represents the uplink transmission period, and the dark grey area represents the downlink reception period; Figure 2 This is a situation where the satellite-to-ground link is shortening over time. The shortening of the satellite-to-ground link leads to a decrease in the satellite-to-ground propagation delay, which leads to a decrease in TA. When TA is too small, there is an overlap and conflict between the uplink transmission period and the downlink reception period. For example, Figure 2 The N+Mth time slot of the uplink transmission period overlaps and conflicts with the Nth time slot of the downlink reception period. A square rectangle represents a time slot, that is, the unit of N and M is a time slot, the time slot length of the uplink transmission period is M+1, and M can be set according to the actual data transmission situation.

[0052] Figure 3 1 is a schematic diagram of the second situation in which there is a transmission conflict between the uplink transmission period and the downlink reception period provided in the first embodiment of the present application. Figure 3 As shown, Figure 3 This is a situation where the satellite-to-ground link is growing over time. The growth of the satellite-to-ground link leads to an increase in the satellite-to-ground propagation delay, which in turn leads to an increase in TA. When TA is too large, there is an overlap and conflict between the uplink transmission period and the downlink reception period. For example, Figure 3 The Nth time slot of the uplink sending period overlaps and conflicts with the last time slot of the downlink receiving period.

[0053] S101, determining an uplink timing advance at a predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information;

[0054] The ephemeris information may be a set of parameters used to describe the orbital position and motion state of a low-orbit satellite. The base station may send system information SIB19 (System Information Block 19) during the downlink transmission period, and the terminal may receive system information SIB19 during the downlink reception period. The terminal may obtain the NTN configuration including the ephemeris information EphemerisInfo by receiving the system information SIB19.

[0055] The time when the terminal receives the ephemeris information sent by the base station is regarded as the current time, and the predicted time is the time in the future period after the current time. The unit of the time can be seconds (s).

[0056] Based on the ephemeris information provided by the base station, the terminal obtains the satellite position vector by direct reading or indirect deduction. Combined with the terminal navigation positioning information, the satellite-to-ground distance can be calculated, and then the satellite-to-ground propagation delay can be calculated, and then the uplink timing advance can be calculated.

[0057] Ephemeris information can include two forms. The first form is the instantaneous motion coordinates of the low-orbit satellite, including the position vector and the velocity vector; when the ephemeris information adopts the first form, the terminal can only calculate the satellite-to-ground propagation delay of the satellite's current position, but it is difficult to derive the satellite-to-ground propagation delay at other times. The second form is the satellite orbit parameters of non-synchronous orbit satellites; when the ephemeris information adopts the second form, the terminal can derive the set of satellite position vectors corresponding to multiple predicted moments based on the satellite orbit parameters, thereby obtaining the set of satellite-to-ground propagation delays corresponding to multiple predicted moments, and then obtaining the set of uplink timing advances corresponding to multiple predicted moments.

[0058] The satellite orbit parameters may be six basic elements used to describe the satellite orbit, which may include orbit semi-major axis, orbit eccentricity, orbit inclination, ascending node right ascension, perigee argument and mean anomaly;

[0059] Among them, the position vector can be a vector pointing from a reference point (generally the center of the earth or the origin of a coordinate system) to a low-orbit satellite; the position vector describes the specific position information of the low-orbit satellite in space, its size represents the distance between the low-orbit satellite and the reference point, and its direction represents the direction of the low-orbit satellite relative to the reference point.

[0060] The terminal navigation and positioning information may refer to the location information of the terminal on the earth surface or in the above space at the current moment. The terminal navigation and positioning information may be obtained through a GNSS (Global Navigation Satellite System) receiving module of the terminal.

[0061] Among them, the method of determining the satellite-to-ground propagation delay at each predicted moment according to the terminal navigation positioning information and the satellite position vector can be adopted by determining the satellite-to-ground link length at each predicted moment according to the terminal navigation positioning information at the current moment and the position vector at each predicted moment, and determining the satellite-to-ground propagation delay at each predicted moment according to the satellite-to-ground link length at each predicted moment; the method of determining the uplink timing advance at each predicted moment according to the satellite-to-ground propagation delay can be adopted by multiplying the satellite-to-ground propagation delay at each predicted moment by two to obtain the uplink timing advance at each predicted moment.

[0062] S102, sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment;

[0063] Timing advance report is a mechanism for the terminal to feedback information related to timing advance to the base station, which is crucial to ensure the efficient and stable operation of the communication system. When certain conditions are met (such as initial access completion, switching to a new cell, and identification of transmission conflicts, etc.), the terminal sends a timing advance report to the base station.

[0064] Figure 4 Schematic diagram of the timing advance report provided in the first embodiment of the present application. Figure 4 As shown, the horizontal axis is the data space, and its unit can be bit; Oct1 and Oct2 represent octal data sequences; R is used for a specific purpose, which may be a data space reserved for subsequent possible data transmission, processing tasks or system operations; the uplink timing advance in the figure represents the data space for storing the uplink timing advance at the current moment, and its size can be 14 bits.

[0065] The enhanced timing advance report can be a report form that is improved or extended on the basis of the traditional timing advance report, and is intended to provide more comprehensive and accurate feedback of timing advance related information to the base station. In this solution, the enhanced timing advance report can be used to provide feedback of the uplink timing advance at each predicted moment to the base station.

[0066] According to the uplink timing advance at each predicted moment, the enhanced timing advance report is sent to the base station in a manner that a first enhanced reporting format is used to send the enhanced timing advance report to the base station; wherein the first enhanced reporting format includes the uplink timing advance at the current moment and the uplink timing advance at each predicted moment. According to the uplink timing advance at each predicted moment, the enhanced timing advance report is sent to the base station in a manner that a first-order drift, a second-order drift, and a drift validity period are determined according to the uplink timing advance at each predicted moment, and a second enhanced reporting format is used to send the enhanced timing advance report to the base station; wherein the second enhanced reporting format includes the uplink timing advance at the current moment, the first-order drift, the second-order drift, and the drift validity period.

[0067] The terminal may send an enhanced timing advance report during an uplink transmission period.

[0068] S103: Receive enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjust uplink transmission timing according to the enhanced high-layer signaling.

[0069] Enhanced high-layer signaling can be key information sent by the base station to the terminal for controlling and adjusting the uplink transmission timing of the terminal. The base station can send enhanced high-layer signaling in the downlink transmission period, and the terminal can receive enhanced high-layer signaling in the downlink reception period.

[0070] Before sending enhanced higher layer signaling, the base station needs to determine the uplink timing advance at each moment according to the received enhanced timing advance report.

[0071] When the enhanced timing advance report adopts the first enhanced report format, the base station determines the uplink timing advance at each moment by estimating by linear interpolation, which can be specifically calculated according to the following formula:

[0072]

[0073] Among them, t represents time t, t∈[t m-1 ,t m ], where t m represents the mth prediction moment, t m-1 represents the m-1th prediction moment, t m =t0+mΔt(1≤m≤n), t0 represents the sending time of the enhanced timing advance report, and n represents the number of predicted time points; TA t Indicates the uplink timing advance at time t, TA m-1 represents the uplink timing advance at the m-1th prediction time, TA m represents the uplink timing advance of the mth predicted moment, and Δt represents the time interval between the predicted moments.

[0074] When the enhanced timing advance report adopts the second enhanced reporting format, the base station determines the uplink timing advance at each moment in a manner that can be calculated using the following formula:

[0075] TA t =TA0+TA Drift ·(t-t0)+TA DriftVariant ·(t-t0) 2

[0076] Where t represents time t (t is within the drift validity period), t0 represents the sending time of the enhanced timing advance report, and TA t represents the uplink timing advance at time t, TA0 represents the uplink timing advance at the time of sending the enhanced timing advance report, and TA Drift Represents the first-order drift, TA DriftVariant Represents the second-order drift.

[0077] The mobile communication protocol stack is a complex set of layered protocols used to achieve communication between terminals and base stations and between nodes within the network. The mobile communication protocol stack draws on the idea of ​​a general network layered architecture and divides communication functions into different layers. Each layer focuses on a specific task, and each layer works together to ensure the effective transmission of data and the provision of communication services. The main layers of the mobile communication protocol stack include the physical layer (layer 1), the data link layer (layer 2), and the network layer (layer 3).

[0078] The base station predicts whether a transmission conflict occurs based on the enhanced timing advance report. The base station can determine the uplink sending time period at each predicted moment according to the uplink timing advance at each predicted moment, and identify whether the uplink sending time period at each predicted moment overlaps with the downlink receiving time period. If there is an overlap between the uplink sending time period and the downlink receiving time period at at least one predicted moment, it is predicted that a transmission conflict occurs.

[0079] The manner in which the base station sends enhanced high-layer signaling may be to send control signaling for the time slot length of the uplink transmission period and / or the downlink reception period through RRC (Radio Resource Control) in layer 3. Correspondingly, the manner in which the uplink transmission timing is adjusted according to the enhanced high-layer signaling may be to adjust the time slot length of the uplink transmission period of the terminal according to the control signaling for the time slot length of the uplink transmission period.

[0080] In an embodiment of the present application, the uplink timing advance at the predicted moment is determined based on the received ephemeris information sent by the base station and the terminal navigation positioning information; an enhanced timing advance report is sent to the base station based on the uplink timing advance at each predicted moment; enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report is received, and the uplink transmission timing is adjusted according to the enhanced high-layer signaling. In the above-mentioned frequency-division half-duplex transmission conflict adjustment method in the non-terrestrial network scenario, the terminal can enable the base station to identify the transmission conflict in time by executing a preset trade-off strategy, and by sending an enhanced timing advance report including the timing advance at the predicted moment, it can help the base station predict the occurrence of a transmission conflict, and can help the base station instruct to adjust the semi-static uplink transmission timing, thereby avoiding the occurrence of a transmission conflict.

[0081] Embodiment 2

[0082] Figure 5 It is a flow chart of the transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario provided in Example 2 of the present application. This scheme makes a better improvement on the above-mentioned embodiment, and the specific improvement is: the method also includes: when it is identified that there is a transmission conflict between the uplink sending period and the downlink receiving period, executing a preset trade-off strategy to indirectly inform the base station; correspondingly, receiving the enhanced high-layer signaling sent by the base station when the transmission conflict is predicted based on the enhanced timing advance report, and adjusting the uplink transmission timing according to the enhanced high-layer signaling, including: receiving the enhanced high-layer signaling sent by the base station when the transmission conflict is predicted based on the enhanced timing advance report or when the transmission conflict is identified based on the preset trade-off strategy executed by the terminal, and adjusting the uplink transmission timing according to the enhanced high-layer signaling.

[0083] like Figure 5 As shown, the specific steps include:

[0084] S501, when it is identified that there is a transmission conflict between the uplink sending period and the downlink receiving period, executing a preset selection strategy to indirectly inform the base station;

[0085] S502, determining an uplink timing advance at a predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information;

[0086] S503, sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment;

[0087] S504, receiving enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report or when the transmission conflict is identified based on a preset trade-off strategy executed by the terminal, and adjusting the uplink transmission timing according to the enhanced high-layer signaling.

[0088] The terminal has spectrum sensing capability and can monitor the signal occupancy in its own working frequency band in real time. When preparing for uplink transmission, if it detects that the target uplink frequency band has been occupied by downlink signals during the expected transmission period, it means that there is a transmission conflict between the uplink transmission period and the downlink reception period.

[0089] The preset trade-off strategy may be a pre-set behavior strategy that the terminal needs to execute when it recognizes that there is a transmission conflict between the uplink transmission period and the downlink reception period, so as to inform the base station that there is a transmission conflict between the uplink transmission period and the downlink reception period of the current terminal. The preset trade-off strategy may include: stopping the execution of the uplink transmission period and executing the downlink reception period; stopping the execution of the downlink reception period and executing the uplink transmission period; determining the execution priority of the uplink transmission period and the downlink reception period according to the logical channel priority carried by the uplink signal and the downlink signal; autonomously determining the execution priority of the uplink transmission period and the downlink reception period.

[0090] In the technical solution, optionally, when it is identified that there is a transmission conflict between the uplink sending period and the downlink receiving period, a preset selection strategy is executed to indirectly inform the base station, including:

[0091] When it is identified that there is a transmission conflict between the uplink transmission period and the downlink reception period, the uplink transmission is stopped and the downlink reception is performed, so as to indirectly inform the base station of the transmission conflict.

[0092] Stopping the uplink sending period may mean that the terminal does not perform uplink sending behavior during the uplink sending period; executing the downlink receiving period may mean that the terminal continues to perform downlink receiving behavior during the downlink receiving period.

[0093] The base station can detect whether DTX (Discontinuous Transmission) has occurred by detecting the received signal strength. When DTX occurs, it means that the terminal does not send the uplink signal normally as expected, which can be identified by the receiving module of the base station by comparing the signal strength. When the base station detects that DTX has occurred, it can determine that there is a transmission conflict between the terminal's uplink transmission period and the downlink reception period.

[0094] In contrast, if the downlink reception period is stopped and the uplink transmission period is executed: if the terminal receives the public SI (System Information) in the downlink, since SI, such downlink data, does not require the terminal to respond and feedback, the base station cannot know whether the downlink data is received normally by the terminal in the downlink; if the terminal receives downlink in the dedicated PDSCH (Physical Downlink Shared Channel), it is necessary to consider that the HARQ-ACK (HARQ confirmation feedback) feedback of most downlink HARQ (Hybrid Automatic Repeat reQuest) processes in the NTN scenario can be turned off. According to the communication protocol, only some HARQ processes may be allowed to turn on feedback in up to 32 HARQ process sets. Therefore, for most of the HARQ processes with feedback turned off, the base station cannot know whether the downlink data is received normally by the terminal in the downlink; even if the HARQ-ACK feedback of a small part of the downlink HARQ processes in the NTN scenario is turned on, in the case of large satellite-to-ground propagation delay, the base station also needs to receive the NACK (Negative ACK) from the terminal after a large satellite-to-ground propagation delay. Acknowledgement, negative acknowledgment), and NACK cannot clearly indicate whether the terminal has decoded the downlink data incorrectly or has failed to receive the downlink data.

[0095] Therefore, the benefit of this arrangement of the present scheme is that, by identifying that there is a transmission conflict between the uplink transmission period and the downlink reception period, the uplink transmission period is stopped and the downlink reception period is executed to inform the base station of the transmission conflict, thereby providing the base station with an efficient and clear conflict feedback method.

[0096] The benefit of this arrangement of the present scheme is that by executing a preset trade-off strategy to indirectly inform the base station when a transmission conflict is identified between the uplink sending period and the downlink receiving period, the base station can promptly identify that there is a transmission conflict between the uplink sending period and the downlink receiving period of the terminal, thereby promptly adjusting the uplink transmission timing of the terminal.

[0097] Embodiment 3

[0098] Figure 6It is a flow chart of the transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario provided in Example 3 of the present application. This solution makes better improvements to the above-mentioned embodiments, and the specific improvements are: according to the uplink timing advance at each predicted moment, an enhanced timing advance report is sent to the base station, including: using a first enhanced report format to send an enhanced timing advance report to the base station; wherein the first enhanced report format includes the uplink timing advance at the current moment and the uplink timing advance at each predicted moment.

[0099] like Figure 6 As shown, the specific steps include:

[0100] S601, determining an uplink timing advance at a predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information;

[0101] S602: Send an enhanced timing advance report to the base station in a first enhanced reporting format; wherein the first enhanced reporting format includes an uplink timing advance at a current moment and an uplink timing advance at each predicted moment;

[0102] Figure 7 Schematic diagram of an enhanced timing advance report in the first enhanced report format provided in Embodiment 3 of the present application. Figure 7 As shown, the horizontal axis is the data space, and its unit can be bit; Oct1, Oct2, Oct3, Oct4...Oct2n+1, Oct2n+2 represent octal data sequences, where n is the number of predicted moments; R is a reserved digit; the uplink timing advance in the figure represents the data space for storing the uplink timing advance at the current moment, and its size can be 14 bits; the uplink timing advance at the nth predicted moment in the figure represents the data space for storing the uplink timing advance at the nth predicted moment, and its size can be 14 bits.

[0103] The base station may perform configuration at the RRC high layer, and instruct the terminal to send the enhanced timing advance report to the base station using the first enhanced reporting format through new parameters.

[0104] The following is control information transmitted by the base station to the terminal through the extended RRC parameter, which is used to control the terminal to send the enhanced timing advance report according to the first enhanced reporting format:

[0105]

[0106] Among them, ext-Ta-Report-Config is the configuration parameter of the enhanced timing advance report newly added in the NTN configuration, which contains 2 parameter sub-items: nrofTaReport and extTaReportInterval. If ext-Ta-Report-Config is not configured, the terminal sends the traditional timing advance report; if ext-Ta-Report-Config configuration exists, the terminal sends the enhanced timing advance report in the first enhanced report format.

[0107] Among them, nrofTaReport represents the number of timing advances included in the enhanced timing advance report; extTaReportInterval represents the time interval between the timing advances.

[0108] Among them, ReportInterval can reuse the definition of existing 3GPP specifications, for example:

[0109] ReportInterval::=ENUMERATED{ms120,ms240,ms480,ms640,ms1024,ms2048,ms5120,ms10240,ms20480,ms40960,min1,min6,min12,min30}.

[0110] Among them, ms120 means 120 milliseconds, min30 means 30 minutes, and the others can be deduced in the same way.

[0111] S603: Receive enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjust uplink transmission timing according to the enhanced high-layer signaling.

[0112] The benefit of this arrangement of the present scheme is that, by adopting the first enhanced report format to send an enhanced timing advance report to the base station, more comprehensive and detailed timing advance information can be provided to the base station, helping the base station to determine the uplink timing advance at each moment, thereby grasping the changing trend of the uplink timing advance, so as to carry out resource allocation and adjustment strategy planning in advance.

[0113] In the technical solution, optionally, sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment includes:

[0114] Determine the first-order drift, the second-order drift and the drift validity time according to the uplink timing advance at each predicted time;

[0115] An enhanced timing advance report is sent to the base station using a second enhanced reporting format; wherein the second enhanced reporting format includes the uplink timing advance at the current moment, the first-order drift, the second-order drift, and the drift validity time.

[0116] The first-order drift can represent the rate of change of the timing advance over time. The second-order drift can be the second-order derivative of the timing advance with respect to time, which describes the change of the rate of change of the timing advance, that is, the rate of change of the first-order drift. The drift effective time can refer to the time range within which the determined first-order drift and second-order drift can more accurately describe the change law of the timing advance; beyond the time range of the drift effective time, the prediction accuracy of the first-order drift and second-order drift may be reduced, and needs to be recalculated or updated.

[0117] According to the uplink timing advance of each prediction moment, the first-order drift, the second-order drift and the effective time of the drift are determined. The first-order drift can be determined according to the difference between the uplink timing advances of adjacent prediction moments, the second-order drift can be determined according to the difference between the differences of adjacent prediction moments, and the effective time of the drift can be determined according to the accuracy requirements of the timing advance.

[0118] Figure 8 Schematic diagram of an enhanced timing advance report in the second enhanced report format provided in Embodiment 3 of the present application. Figure 8 As shown, the horizontal axis is the data space, and its unit can be bit; Oct1, Oct2, Oct3, Oct4, and Oct5 represent octal data sequences; R is a reserved digit; the uplink timing advance in the figure represents the data space for storing the uplink timing advance at the current moment, and its size can be 14 bits; the first-order drift in the figure represents the data space for storing the first-order drift, and its size can be 8 bits; the second-order drift in the figure represents the data space for storing the second-order drift, and its size can be 4 bits; the drift effective time in the figure represents the data space for storing the drift effective time, and its size can be 12 bits.

[0119] The base station may perform configuration at the RRC high layer, and instruct the terminal to send the enhanced timing advance report to the base station using the second enhanced reporting format through new parameters.

[0120] The benefit of this arrangement of the present scheme is that by adopting the second enhanced reporting format to send an enhanced timing advance report to the base station, wherein the second enhanced reporting format includes the uplink timing advance, the first-order drift, the second-order drift and the drift effective time at the current moment, the data size of the enhanced timing advance report can be reduced, thereby greatly improving the transmission efficiency of the enhanced timing advance report and reducing the probability of packet loss under limited bandwidth resources.

[0121] Embodiment 4

[0122] Fig. 9 It is a flow chart of the transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario provided in Example 4 of the present application. This scheme makes better improvements to the above-mentioned embodiments, and the specific improvements are: the enhanced high-level signaling includes a target adjustment physical channel and its target uplink timing advance at each moment, and the target adjustment physical channel includes at least one of a PUSCH channel, a PUCCH channel carrying CSI, a PUCCH channel carrying SR, and an SRS channel; accordingly, receiving the enhanced high-level signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjusting the uplink transmission timing according to the enhanced high-level signaling, including: receiving the enhanced high-level signaling for the target adjustment physical channel sent by the MAC CE control unit of the base station when a transmission conflict is predicted based on the enhanced timing advance report; adjusting the uplink timing advance of the target adjustment physical channel at each moment to the target uplink timing advance.

[0123] like Fig. 9 As shown, the specific steps include:

[0124] S901, determining an uplink timing advance at a predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information;

[0125] S902, sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment;

[0126] S903, receiving enhanced high-layer signaling for adjusting the target physical channel, which is sent by the MAC CE control unit of the base station based on the enhanced timing advance report;

[0127] The target adjustment physical channel may refer to an uplink physical channel whose uplink timing advance needs to be adjusted, wherein the uplink physical channel may refer to a physical channel used to transmit uplink signals. The target adjustment physical channel may include a PUSCH channel, a PUCCH channel carrying CSI, a PUCCH channel carrying SR, and an SRS channel.

[0128] Specifically, the PUSCH (Physical Uplink Shared) channel is mainly used for the terminal to send user data to the base station; the PUCCH (Physical Uplink Control) channel carrying CSI (Channel State Information) is used for the terminal to feed back channel state information to the base station; the PUCCH channel carrying SR (Scheduling Request) is used for the terminal to send scheduling requests to the base station; the SRS (Sounding Reference Signal) channel is used for the terminal to send sounding reference signals to the base station. In this solution, the PUSCH channel included in the target adjustment physical channel refers especially to the PUSCH channel of grant type 1.

[0129] The target uplink timing advance at each moment may refer to the uplink timing advance that should be used in the uplink transmission period at each moment to avoid transmission conflict.

[0130] MAC (Media Access Control) CE (Control Element) is part of the MAC layer protocol and is used to carry the control information of the MAC layer. In this solution, the MAC CE control unit of the base station is mainly used to indicate the control information of the timing advance of the four uplink physical channels, namely, the PUSCH channel, the PUCCH channel carrying CSI, the PUCCH channel carrying SR, and the SRS channel. For other uplink physical channels, such as the SPS channel of semi-persistent scheduling or the uplink physical channel of non-periodic scheduling, these uplink physical channels themselves can be adjusted through layer 2 signaling.

[0131] Fig.10 Schematic diagram of enhanced high-level signaling of a MAC CE control unit for target adjustment of a physical channel provided in Embodiment 4 of the present application. Fig.10 As shown, the horizontal axis is the data space, and its unit can be bit; Oct1 represents an octal data sequence; the target adjustment physical channel (Channel Bitmap) in the figure is used to indicate the target adjustment physical channel; the target timing advance (scheduling offset) in the figure is used to indicate the target timing advance superimposed on the time slot length of the existing semi-static scheduling, the unit of the scheduling offset is subframe, and the value range of the scheduling offset is related to the size of the radio frame. Among them, the target adjustment physical channel (Channel Bitmap) includes the PUSCH channel, the PUCCH channel carrying CSI, the PUCCH channel carrying SR, and the SRS channel. If the data in the PUSCH channel data space is 1, it means that the target adjustment physical channel includes the PUSCH channel. If the data in the PUSCH channel data space is 0, it means that the target adjustment physical channel does not include the PUSCH channel, and the others can be deduced by analogy.

[0132] S904: Adjust the uplink timing advance of the target adjusted physical channel at each moment to the target timing advance.

[0133] The uplink timing advance of the target physical channel at each time is adjusted to the target timing advance by reading the value of scheduling offset (k), and adding k·2 to the time slot length originally determined by the RRC configuration. μ Wherein, μ can represent the association between the time slot and the subframe; in the scenario of initial establishment of the wireless configuration (such as initial access completion or switching to a new cell, etc.), that is, when the terminal has not received the enhanced high-layer signaling of the MAC CE control unit, k defaults to 0.

[0134] The benefit of this arrangement of the present scheme is that, by receiving the enhanced high-layer signaling for the target adjusted physical channel sent by the MAC CE control unit of the base station based on the enhanced timing advance report, the uplink timing advance of the target adjusted physical channel at each moment is adjusted to the target timing advance. Compared with reconfiguring the time slot length of the uplink semi-static transmission through RRC, faster, more flexible and precise adjustment can be achieved, thereby reducing the probability of transmission conflicts.

[0135] Embodiment 5

[0136] Fig.11 1 is a flow chart of a method for adjusting transmission conflicts in a frequency division half-duplex transmission in a non-terrestrial network scenario provided in Embodiment 5 of the present application. Fig.11 As shown, the specific steps include:

[0137] S1101, receiving an enhanced timing advance report sent by the terminal, and predicting whether a transmission conflict occurs according to the enhanced timing advance report;

[0138] S1102: When a transmission conflict is predicted to occur, an enhanced high-layer signaling is sent to the terminal to adjust an uplink transmission timing.

[0139] In an embodiment of the present application, an enhanced timing advance report sent by the terminal is received, and whether a transmission conflict occurs is predicted based on the enhanced timing advance report; in the case of predicting a transmission conflict, enhanced high-layer signaling is sent to the terminal to adjust the uplink transmission timing. In the above-mentioned frequency-division half-duplex transmission conflict adjustment method in a non-terrestrial network scenario, the base station can predict the occurrence of a transmission conflict by receiving an enhanced timing advance report including the uplink timing advance of the predicted moment sent by the terminal, and can instruct to adjust the uplink transmission timing, thereby avoiding the occurrence of a transmission conflict.

[0140] Embodiment 6

[0141] Fig.12 This is a schematic diagram of the structure of a transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario provided in Example 6 of the present application. The device is configured in a terminal, data is transmitted between the terminal and a base station, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through an asynchronous orbit satellite payload.

[0142] like Fig.12 As shown, the device comprises:

[0143] The advance prediction module 1210 is used to determine the uplink timing advance at the predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information;

[0144] The enhanced report sending module 1220 is configured to send an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment;

[0145] The uplink transmission adjustment module 1230 is configured to receive enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjust uplink transmission timing according to the enhanced high-layer signaling.

[0146] In an embodiment of the present application, the advance prediction module is used to determine the uplink timing advance at the predicted moment based on the received ephemeris information sent by the base station and the terminal navigation positioning information; the enhanced report sending module is used to send an enhanced timing advance report to the base station based on the uplink timing advance at each predicted moment; the uplink transmission adjustment module is used to receive the enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjust the uplink transmission timing according to the enhanced high-layer signaling. In the above-mentioned frequency-division half-duplex transmission conflict adjustment device in the non-terrestrial network scenario, the terminal can enable the base station to identify the transmission conflict in time by executing a preset trade-off strategy, and can help the base station predict the occurrence of transmission conflict by sending an enhanced timing advance report including the timing advance of the predicted moment, and can help the base station instruct to adjust the semi-static uplink transmission timing, thereby avoiding the occurrence of transmission conflict.

[0147] The transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario in the embodiment of the present application can be a device, or a component, integrated circuit, or chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile electronic device can be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0148] The transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0149] The frequency division half-duplex transmission conflict adjustment device in a non-terrestrial network scenario provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned embodiments one to four, and will not be repeated here to avoid repetition.

[0150] Embodiment 7

[0151] Fig.13 This is a schematic diagram of the structure of a transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario provided in Example 7 of the present application. The device is configured in a base station, data is transmitted between the base station and a terminal, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through an asynchronous orbit satellite payload.

[0152] like Fig.13 As shown, the device comprises:

[0153] A transmission conflict prediction module 1310, configured to receive an enhanced timing advance report sent by the terminal, and predict whether a transmission conflict occurs according to the enhanced timing advance report;

[0154] The high-layer signaling sending module 1320 is used to send enhanced high-layer signaling to the terminal to adjust the uplink transmission timing when a transmission conflict is predicted to occur.

[0155] In an embodiment of the present application, a transmission conflict prediction module is used to receive an enhanced timing advance report sent by the terminal, and predict whether a transmission conflict occurs based on the enhanced timing advance report; a high-level signaling sending module is used to send enhanced high-level signaling to the terminal to adjust the uplink transmission timing when a transmission conflict is predicted. In the above-mentioned frequency-division half-duplex transmission conflict adjustment device in a non-terrestrial network scenario, the base station can predict the occurrence of a transmission conflict by receiving an enhanced timing advance report including the uplink timing advance of the predicted moment sent by the terminal, and can instruct to adjust the uplink transmission period, thereby avoiding the occurrence of a transmission conflict.

[0156] The transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario in the embodiment of the present application can be a device, or a component, an integrated circuit, or a chip in a base station.

[0157] The transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0158] The frequency division half-duplex transmission conflict adjustment device in the non-terrestrial network scenario provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned embodiment 5. To avoid repetition, they will not be repeated here.

[0159] Embodiment 8

[0160] like Fig.14 As shown, embodiment eight of the present application also provides a data transmission system 1400, and the data transmission system 1400 includes a terminal 1401 and a base station 1402, and data transmission is performed between the terminal 1401 and the base station 1402; the terminal 1401 adopts a frequency division half-duplex mode, and the terminal 1401 implements each process of the above embodiments one to five; the base station 1402 provides network coverage to the terminal through a non-synchronous orbit satellite payload, and the base station 1402 implements each process of the above embodiment six.

[0161] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0162] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0163] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0164] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A transmission conflict adjustment method for frequency division half-duplex in a non-terrestrial network scenario, characterized in that: The method is executed by a terminal, data transmission is performed between the terminal and a base station, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload; the method includes: Determine the uplink timing advance at the predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information; sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment; receiving enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjusting uplink transmission timing according to the enhanced high-layer signaling.

2. The transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario according to claim 1, characterized in that: The method further comprises: When a transmission conflict is detected between an uplink transmission period and a downlink reception period, a preset selection strategy is executed to indirectly inform the base station; Correspondingly, receiving enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjusting the uplink transmission timing according to the enhanced high-layer signaling, includes: receiving enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report or when the transmission conflict is identified based on a preset trade-off strategy executed by the terminal, and adjusting uplink transmission timing according to the enhanced high-layer signaling.

3. The transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario according to claim 2 is characterized in that: When a transmission conflict is detected between an uplink transmission period and a downlink reception period, a preset selection strategy is executed to indirectly inform the base station, including: When it is identified that there is a transmission conflict between the uplink transmission period and the downlink reception period, the uplink transmission is stopped and the downlink reception is performed, so as to indirectly inform the base station of the transmission conflict.

4. The transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario according to claim 1, characterized in that: Sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment includes: An enhanced timing advance report is sent to the base station using a first enhanced reporting format; wherein the first enhanced reporting format includes the uplink timing advance at the current moment and the uplink timing advance at each predicted moment.

5. The transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario according to claim 1, characterized in that: Sending an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment includes: Determine the first-order drift, the second-order drift and the drift validity time according to the uplink timing advance at each predicted time; An enhanced timing advance report is sent to the base station using a second enhanced reporting format; wherein the second enhanced reporting format includes the uplink timing advance at the current moment, the first-order drift, the second-order drift, and the drift validity time.

6. The transmission conflict adjustment method of frequency division half-duplex in a non-terrestrial network scenario according to claim 1, characterized in that: The enhanced high-layer signaling includes a target adjusted physical channel and a target uplink timing advance at each moment, wherein the target adjusted physical channel includes at least one of a PUSCH channel, a PUCCH channel carrying CSI, a PUCCH channel carrying SR, and an SRS channel; Correspondingly, receiving enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjusting the uplink transmission timing according to the enhanced high-layer signaling, includes: receiving enhanced high-layer signaling for adjusting the target physical channel, which is sent by the MAC CE control unit of the base station when a transmission conflict is predicted based on the enhanced timing advance report; The uplink timing advance of the target adjusted physical channel at each moment is adjusted to the target uplink timing advance.

7. A transmission conflict adjustment method for frequency division half-duplex in a non-terrestrial network scenario, characterized in that: The method is executed by a base station, data transmission is performed between the base station and a terminal, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload; the method comprises: receiving an enhanced timing advance report sent by the terminal, and predicting whether a transmission conflict occurs according to the enhanced timing advance report; When a transmission conflict is predicted to occur, enhanced high-layer signaling is sent to the terminal to adjust the uplink transmission timing.

8. A transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario, characterized in that: The device is configured in a terminal, data is transmitted between the terminal and a base station, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload; the device includes: An advance prediction module is used to determine the uplink timing advance at the predicted time according to the received ephemeris information sent by the base station and the terminal navigation positioning information; An enhanced report sending module, configured to send an enhanced timing advance report to the base station according to the uplink timing advance at each predicted moment; The uplink transmission adjustment module is used to receive enhanced high-layer signaling sent by the base station when a transmission conflict is predicted based on the enhanced timing advance report, and adjust the uplink transmission timing according to the enhanced high-layer signaling.

9. A transmission conflict adjustment device for frequency division half-duplex in a non-terrestrial network scenario, characterized in that: The device is configured in a base station, data is transmitted between the base station and a terminal, the terminal adopts a frequency division half-duplex mode, and the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload; the device includes: a transmission conflict prediction module, configured to receive an enhanced timing advance report sent by the terminal, and predict whether a transmission conflict occurs according to the enhanced timing advance report; The high-layer signaling sending module is used to send enhanced high-layer signaling to the terminal in the case of predicting that a transmission conflict occurs, so as to adjust the uplink transmission timing.

10. A data transmission system, characterized in that: The data transmission system includes a terminal and a base station, and data transmission is performed between the terminal and the base station; the terminal adopts a frequency division half-duplex mode, and the terminal implements the steps of the frequency division half-duplex transmission conflict adjustment method in a non-ground network scenario as described in any one of claims 1-6; the base station provides network coverage to the terminal through a non-synchronous orbit satellite payload, and the base station implements the steps of the frequency division half-duplex transmission conflict adjustment method in a non-ground network scenario as described in claim 7.

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