A method for reporting uplink timing advance and a device thereof

Abstract

The method comprises the following steps: a terminal device sends first indication information to a network device, wherein the first indication information is used to indicate an uplink timing advance TA of the terminal device to the network device. Thus, the terminal device can directly send its corresponding uplink TA to the network device. In this way, the network device can accurately determine the uplink TA corresponding to the terminal device, thereby tracking the NTN propagation delay, reliably and accurately compensating the RTD of the terminal device, and accurately scheduling the signaling and service timing of the terminal.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method and apparatus for reporting uplink timing advance. Background Technology

[0002] In communication systems, the propagation delay of terrestrial mobile systems is typically less than 1 millisecond (ms). In related technologies, network devices usually use a Random Access Response (RAR) carried on a Physical Downlink Shared Channel (PDSCH) to send an initial timing advance (TA) to the terminal device. Then, a Medium Access Control (MAC) control element (CE) sends a TA adjustment command to the terminal device to compensate for the round-trip delay (RTD). This ensures that uplink data signals from different terminal devices arrive at the network device simultaneously, thereby avoiding interference between different terminals and different carriers.

[0003] However, in non-terrestrial networks (NTNs), the long propagation distance and high speed of satellite communication result in significant and rapidly changing propagation delays. Currently, tracking and compensating for these rapid changes in NTN propagation delays is a pressing issue that needs to be addressed. Summary of the Invention

[0004] This disclosure provides a method and apparatus for reporting uplink timing advance (TA), which can be applied to Virtual Reality (VR), Augmented Reality (AR), and Vehicle-to-Everything (V2X) communication, Long Term Evolution-Vehicle (LTE-V) communication, and Vehicle-to-Vehicle (V2V) communication. It can also be used in fields such as intelligent driving and intelligent connected vehicles. By having the terminal device report the uplink TA, the network device can accurately determine the uplink TA of the terminal device, thereby tracking the propagation delay of the Network Node Transmission (NTN), performing reliable and accurate RTD compensation for the terminal device, and determining accurate scheduling timing. This ensures that uplink data signals from different terminal devices can arrive at the network device simultaneously, avoiding interference between different terminal devices and different carriers, and enabling accurate and timely scheduling of terminal signaling and services.

[0005] In a first aspect, embodiments of this disclosure provide a method for reporting uplink timing advance, the method being executed by a terminal device, the method comprising: sending first indication information to a network device, wherein the first indication information is used to indicate to the network device the uplink timing advance TA of the terminal device.

[0006] The uplink timing advance reporting method disclosed herein allows the terminal device to directly send its corresponding uplink TA to the network device. In this way, the network device can accurately determine the uplink TA corresponding to the terminal device, thereby tracking the NTN propagation delay, performing reliable and accurate RTD compensation for the terminal device, and accurately scheduling the signaling and service timing of the terminal.

[0007] Secondly, this disclosure also proposes a method for reporting uplink timing advance, the method being executed by a network device, the method comprising: receiving first indication information sent by a terminal device, wherein the first indication information is used to indicate the uplink timing advance TA of the terminal device to the network device.

[0008] Thirdly, embodiments of this disclosure provide a communication device that implements some or all of the functions of the terminal device described in the first aspect above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0009] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions described in the above method. The transceiver module supports communication between the communication device and other devices. The communication device may also include a storage module, coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the communication device.

[0010] As an example, the processing module can be a processor, the transceiver module can be a transceiver or a communication interface, and the storage module can be a memory.

[0011] Fourthly, embodiments of this disclosure provide another communication device that implements some or all of the functions of the network device in the method example described in the second aspect above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0012] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions described in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the necessary computer programs and data of the communication device.

[0013] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0014] In a sixth aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the second aspect above.

[0015] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

[0016] Eighthly, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the second aspect above.

[0017] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0018] In a tenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the second aspect above.

[0019] Eleventhly, embodiments of this disclosure provide an uplink timing advance reporting system, the system including the communication device described in the third aspect and the communication device described in the fourth aspect, or the system including the communication device described in the fifth aspect and the communication device described in the sixth aspect, or the system including the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system including the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0020] In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use by the aforementioned terminal device, which, when executed, cause the terminal device to perform the method described in the first aspect.

[0021] In a thirteenth aspect, embodiments of the present invention provide a readable storage medium for storing instructions for use by the network device described above, which, when executed, cause the network device to perform the method described in the second aspect above.

[0022] In a fourteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0023] In a fifteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above.

[0024] In a sixteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a terminal device in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the terminal device. The chip system may be composed of chips or may include chips and other discrete devices.

[0025] In a seventeenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting network devices in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the network device. The chip system may be composed of chips or may include chips and other discrete devices.

[0026] In an eighteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0027] In a nineteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0029] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0030] Figure 2 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0031] Figure 3 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0032] Figure 4 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0033] Figure 5 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0034] Figure 6 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0035] Figure 7 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0036] Figure 8 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0037] Figure 9 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0038] Figure 10 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0039] Figure 11 This is a flowchart illustrating a method for reporting uplink timing advance provided in an embodiment of this disclosure;

[0040] Figure 12 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure;

[0041] Figure 13 This is a schematic diagram of another communication device provided in an embodiment of this disclosure;

[0042] Figure 14 This is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0043] To facilitate understanding, the terminology used in this disclosure will be introduced first.

[0044] 1. Uplink Control Information (UCI)

[0045] The UCI is carried by the Physical Uplink Control Channel (PUCCH). The UCI can include hybrid automatic repeat request (HARQ) feedback information, channel state information (CSI), etc. The PUCCH is a physical channel used to carry uplink scheduling information.

[0046] 2. MAC CE

[0047] MAC CE refers to the control unit that communicates at the MAC layer between terminal devices and network devices. It can be used to carry Buffer Status Reports (BSRs), TAs, etc.

[0048] 3. NTN network

[0049] NTN networks refer to networks that are not deployed on the ground, including satellite communications. Satellite communications refer to communications conducted by terrestrial radio communication equipment using satellites as relay nodes. A satellite communication system consists of a satellite component and a ground component.

[0050] In 5G networks, NTN application scenarios include enhanced mobile broadband (eMBB) and massive machine-type communication (mMTC) scenarios.

[0051] 4. Vehicle-to-everything (V2X) communication

[0052] V2X communication refers to communication between a vehicle and anything in the outside world. V2X communication can include, but is not limited to: vehicle-to-vehicle (V2V) communication, vehicle-to-pedestrian (V2P) communication, vehicle-to-infrastructure (V2I) communication, and vehicle-to-network (V2N) communication.

[0053] To better understand the uplink timing advance reporting method disclosed in this disclosure, the communication system to which this disclosure is applicable is first described below.

[0054] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device, a terminal device, and a satellite. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown is an example comprising a network device 11, a terminal device 12, and a satellite 13.

[0055] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, long-term evolution (LTE) systems, 5th generation (5G) mobile communication systems, 5G new radio (NR) systems, or other future new mobile communication systems. The network device 11 in this disclosure is a network-side entity used for transmitting or receiving signals. For example, the network device 11 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device. The network device provided in this disclosure can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure allows the protocol layer of a network device, such as a base station, to be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining partial or complete protocol layer functions are distributed in the DU, which is centrally controlled by the CU. The satellite provided in this disclosure can be a low-Earth orbit satellite, or it can be a high-Earth orbit satellite; this disclosure does not limit the type of satellite.

[0056] The terminal device 12 in this disclosure is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The embodiments of this disclosure do not limit the specific technology or device form used in the terminal device.

[0057] Currently, the uplink synchronization mechanisms of 5G NR, Narrow Band Internet of Things (NB-IoT), and eMTC cannot track and compensate for the rapid changes in NTN propagation latency, necessitating the introduction of open-loop uplink TA on the terminal device side. Open-loop uplink TA is calculated by the terminal device based on its own positioning information and satellite location information, determining the propagation distance from the terminal to the network, and then calculating the round-trip time of the electromagnetic wave based on the propagation speed of electromagnetic waves.

[0058] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0059] The following section, in conjunction with the accompanying drawings, provides a detailed description of the method and apparatus for reporting uplink timing advance provided in this disclosure.

[0060] Please see Figure 2 , Figure 2This is a flowchart illustrating an uplink timing advance reporting method provided in an embodiment of this disclosure. The method is configured to be executed by a terminal device, such as... Figure 2 As shown, the method may include, but is not limited to, the following steps:

[0061] Step 21: Send a first indication message to the network device, wherein the first indication message is used to indicate the uplink timing advance (TA) of the terminal device to the network device.

[0062] In this disclosure, in order to track and compensate for the NTN propagation delay, compensate for all RTDs of the terminal device, and perform accurate timing scheduling control of the terminal device, the terminal device can actively report its corresponding TA to the network device.

[0063] Optionally, the first indication information in this disclosure may include at least one of the following: an open-loop uplink TA corresponding to the terminal device; a first uplink TA corresponding to all round-trip time delays (RTDs) compensated by the terminal device; and a second uplink TA corresponding to a specific RTD compensated by the terminal device.

[0064] Optionally, the entire RTD is used to characterize the sum of the delay caused by the rapid movement of the satellite and the round-trip delay of the data in the NTN system. The corresponding first uplink TA may include an open-loop uplink TA and a closed-loop uplink TA.

[0065] Optionally, the closed-loop uplink TA can be determined and sent to the terminal device by the network device based on the arrival time of the uplink signal of the terminal device.

[0066] Optionally, the closed-loop uplink TA may also include a common TA determined by the network device based on the cell or corresponding beam where the terminal device is located. This common TA can be configured by the network device to the terminal device via broadcast or multicast.

[0067] Furthermore, a specific RTD can be the RTD corresponding to the closed-loop uplink TA, or it can be the RTD corresponding to the open-loop uplink TA, or it can be the RTD corresponding to both the open-loop and closed-loop uplink TAs. This disclosure does not limit this.

[0068] Optionally, in this disclosure, the uplink TA in the first indication information can be the absolute value of the TA currently corresponding to the terminal device, or it can be the change value of the TA currently corresponding to the terminal device relative to the TA reported last time.

[0069] For example, if the terminal device determines that the currently reported uplink TA is 10ms, then the terminal can directly indicate this 10ms in the first indication information. Alternatively, if the terminal device determines that the currently reported uplink TA is 10ms, and the terminal device's last reported uplink TA was 8ms, meaning the current uplink TA is delayed by 2ms relative to the last reported uplink TA, then the terminal device can directly send this change value -2ms to the network device.

[0070] By implementing the embodiments of this disclosure, the terminal device can directly send its corresponding uplink TA to the network device. In this way, the network device can accurately determine the uplink TA corresponding to the terminal device, thereby tracking the NTN propagation delay, performing reliable and accurate RTD compensation for the terminal device, and accurately scheduling the signaling and service timing of the terminal.

[0071] Please see Figure 3 , Figure 3 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment. The method is configured to be executed by the terminal device as follows: Figure 3 As shown, the method may include, but is not limited to, the following steps:

[0072] Step 31: Determine the open-loop uplink TA based on the positioning information of the terminal device and the satellite position information in the NTN.

[0073] Step 32: Receive the second indication information sent by the network device, wherein the second indication information is used to indicate the closed-loop uplink TA corresponding to the terminal device.

[0074] Optionally, the closed-loop uplink TA can be determined by the network device based on the arrival time of the uplink signal from the terminal device. That is, the network device can calculate the RTD based on the time of sending control information to the terminal device and the arrival time of the corresponding uplink signal sent by the terminal device, determine the closed-loop uplink TA based on the calculated RTD, and then send it to the terminal device.

[0075] Optionally, the closed-loop uplink TA can also be determined by the network device based on the cell or corresponding beam where the terminal device is located. Typically, different terminal devices located in the same cell or corresponding to the same beam may have the same portion of the closed-loop uplink TA. Therefore, the network device can, as needed, send the same portion of the closed-loop uplink TA corresponding to different terminal devices located in the same cell or corresponding to the same beam to the terminal devices in a unified manner through broadcast or multicast.

[0076] Optionally, the closed-loop uplink TA can also be determined by the network device based on the uplink signal arrival time of the terminal device and the cell it belongs to. Alternatively, the closed-loop uplink TA can be determined by the network device based on the uplink signal arrival time of the terminal device and the corresponding beam. This disclosure does not limit this.

[0077] Step 33: Determine the first uplink TA based on the closed-loop uplink TA and the open-loop uplink TA.

[0078] Optionally, in this disclosure, the terminal device can determine the first uplink TA based on the sum of the closed-loop uplink TA and the open-loop uplink TA.

[0079] Step 34: Send first indication information to the network device, wherein the first indication information is used to indicate the first uplink TA to the network device.

[0080] Optionally, in this disclosure, the terminal device can send a first uplink TA to the network device based on the MAC CE. For example, the terminal device can use specified bits in the MAC CE to carry the absolute or relative value of the first uplink TA according to the network device's configuration or according to the protocol agreement. The meanings of the absolute and relative values ​​of the first uplink TA can be found in the detailed description of any embodiment of this disclosure, and will not be repeated here.

[0081] Optionally, in this embodiment of the present disclosure, the terminal device may also send first indication information to the network device based on UCI, or send first indication information to the network device simultaneously based on MAC CE and UCI. The first uplink TA in the first indication information can be either the absolute value or the relative value of the first uplink TA; this disclosure does not limit this.

[0082] By implementing the embodiments of this disclosure, after the terminal device determines its own corresponding open-loop uplink TA and receives the closed-loop uplink TA sent by the network device, it can determine its own corresponding first uplink TA and send the first uplink TA to the network device. In this way, the network device can accurately determine the uplink TA of the terminal device, thereby tracking the propagation delay of NTN, performing reliable and accurate RTD compensation for the terminal device, and accurately scheduling the signaling and service timing of the terminal.

[0083] Please see Figure 4 , Figure 4 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment. The method is configured to be executed by the terminal device as follows: Figure 4 As shown, the method may include, but is not limited to, the following steps:

[0084] Step 41: Determine the reference TA and offset TA corresponding to the terminal device. The reference TA is used to characterize the reference value in the TA corresponding to the terminal device, and the offset TA is used to characterize the change value in the TA corresponding to the terminal device.

[0085] Typically, the uplink TA corresponding to a terminal device may include an open-loop uplink TA and a closed-loop uplink TA. The open-loop uplink TA can be determined by the terminal device based on its own location information and the location information of satellites in the NTN network. The closed-loop uplink TA is usually sent by the network device to the terminal device. The method for determining the closed-loop uplink TA can be found in the detailed description of any embodiment of this disclosure, and will not be repeated here.

[0086] In this embodiment of the disclosure, in order to ensure the reliability and timeliness of the TA sent by the terminal device to the network device, the terminal device can divide its corresponding uplink TA into two parts: the base TA and the offset TA.

[0087] Among them, the reference TA is a relatively fixed part of the TA corresponding to the terminal device, and the offset TA is used to characterize the part of the TA corresponding to the terminal device that changes more frequently.

[0088] For example, if the uplink TA corresponding to the terminal device is usually 20ms-28ms, then 20ms can be the base TA, and the rest can be the offset TA.

[0089] It should be noted that the terminal device can determine the division method of the base TA and offset TA according to the protocol agreement, or it can determine the division method of the base TA and offset TA according to the configuration of the network device. This disclosure does not limit this.

[0090] Step 42: Based on MAC CE, send the baseline TA to the network device.

[0091] Step 43: Based on UCI, send the offset TA to the network device.

[0092] In this embodiment of the disclosure, considering that the MAC layer has higher reliability but relatively larger transmission latency, a base TA is sent to the network device based on MACCE, and an offset TA is sent based on UCI. This ensures that the terminal device can accurately and reliably send its corresponding TA to the network device, and avoids the network device being unable to perform RTD on the terminal device due to the loss of UCI.

[0093] By implementing the embodiments of this disclosure, after determining its corresponding reference TA and offset TA, the terminal device can send the reference TA to the network device based on the MAC CE and the offset TA to the network device based on the UCI. In this way, it is ensured that the terminal device can accurately and reliably send its corresponding TA to the network device to track the propagation delay of NTN, and it avoids the network device being unable to perform RTD compensation for the terminal device due to the loss of UCI. This minimizes the difference in the arrival time of uplink data signals from different terminal devices to the network device and avoids interference between different terminal devices and different carriers.

[0094] Please see Figure 5 , Figure 5 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment. The method is configured to be executed by the terminal device as follows: Figure 5 As shown, the method may include, but is not limited to, the following steps:

[0095] Step 51: Receive the fourth indication information sent by the network device, wherein the fourth indication information is used to indicate to the terminal device the triggering condition for sending the first indication information.

[0096] In this disclosure, the network device can also configure the terminal device with the trigger conditions for reporting uplink TA, so that the terminal device can report its corresponding uplink TA in an orderly manner according to the trigger conditions.

[0097] The triggering conditions may include any of the following: a specified timing period; the offset of the currently reported TA relative to the reference TA reaches a first threshold value, wherein the reference TA is used to characterize the reference value in the uplink TA corresponding to the terminal device; the offset of the currently reported TA relative to the adjacent previously reported TA reaches a second threshold value.

[0098] Step 52: In response to the fulfillment of the triggering condition, send the first indication information to the network device.

[0099] For example, a network device can configure a specified timing period for a terminal device to report uplink TA (Transmission Availability). The terminal device can then configure a corresponding trigger timer based on this specified timing period, so that when the trigger timer reaches the specified timing period, it sends a first indication message to the network device. After sending the first indication message, the terminal device immediately resets the trigger timer.

[0100] Alternatively, if the trigger condition is a first threshold value, and the first threshold value is 2ms and the base TA is 20ms, then if the current uplink TA of the terminal device is 25ms, the terminal device can determine that the offset of the TA to be reported relative to the base TA is 5ms, which is greater than the first threshold value of 2ms, thus meeting the trigger condition. Therefore, the terminal device can send the first indication information to the network device.

[0101] Alternatively, if the trigger condition is a second threshold value of 5ms, then if the current uplink TA is 30ms and the adjacent previously reported TA is 23ms, the terminal device can determine that the offset of the currently reported TA relative to the adjacent previously reported TA is 7ms, which is greater than the second threshold value, thus satisfying the trigger condition. Therefore, the terminal device can send the second indication information to the network device.

[0102] Optionally, in this disclosure, the network device may also directly send third instruction information to the terminal device to instruct the terminal device to send the first instruction information.

[0103] That is, the terminal device only sends the first indication information to the network device after receiving the third indication information sent by the network device, so as to indicate its corresponding uplink TA to the network device.

[0104] By implementing the embodiments of this disclosure, the terminal device first receives the fourth indication information containing the triggering conditions sent by the network device, and sends its corresponding uplink TA to the network device when the triggering conditions are met. In this way, it is ensured that the terminal device can accurately and orderly send its corresponding TA to the network device, thereby ensuring that the network device can track the NTN propagation delay, perform RTD compensation for the terminal device, and accurately schedule the signaling and service timing of the terminal.

[0105] Please see Figure 6 , Figure 6 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment. The method is configured to be executed by a terminal device, such as... Figure 6 As shown, the method may include, but is not limited to, the following steps:

[0106] Step 61: Receive the fourth indication information sent by the network device, wherein the fourth indication information is used to indicate to the terminal device the triggering condition for sending the first indication information.

[0107] The specific implementation of the triggering condition can be found in the detailed description of any embodiment of this disclosure, and will not be repeated here.

[0108] Step 62: Receive the fifth indication information sent by the network device, wherein the fifth indication information is used to indicate the timing value of the specified prohibition timer to the terminal device, and the specified prohibition timer is used to control the minimum time interval for the terminal device to continuously send the first indication information to the network device.

[0109] Step 63: In response to the fulfillment of the triggering condition and the time interval between the current time and the adjacent previous TA reporting time reaching the timing value of the first prohibition timer, send the first indication information to the network device.

[0110] Typically, since there may be multiple triggering conditions, in order to avoid multiple triggering conditions being triggered simultaneously or at very short intervals, which could lead to the terminal device sending the same indication information to the network device multiple times and wasting resources, in this embodiment of the disclosure, the terminal device may also control the time interval between two consecutive transmissions of the first indication information to the network device.

[0111] Specifically, the terminal device can set a first prohibition timer to control the time interval between two consecutive uplink TA reports from the terminal device to the network device. The terminal device will only send an uplink TA to the network device when the time interval between the current moment and the adjacent moment of the previous uplink TA transmission reaches the timer period of the first prohibition timer. Furthermore, the terminal device resets the first prohibition timer immediately after sending the first indication information.

[0112] The timing value of the first prohibition timer can be configured by the network device or determined according to the protocol agreement; this disclosure does not limit this.

[0113] Optionally, in this disclosure, the terminal device may send the first indication information to the network device only when it receives the third indication information sent by the network device and the time interval between the current time and the adjacent previous TA reporting time is greater than the timing value of the second prohibition timer.

[0114] Specifically, since the terminal device can send the first indication information to the network device only after receiving the third indication information sent by the network device, in this disclosure, to avoid sending the same first indication information to the network device multiple times, the terminal device can also set a second prohibition timer to control the time interval between two consecutive uplink TA reports from the terminal device to the network device. After receiving the third indication information from the network device, it first determines whether the time interval between the current moment and the adjacent previous TA report is greater than the timer value of the second prohibition timer. If it is greater, the terminal device can send the first indication information to the network device; otherwise, it can stop sending the first indication information. Furthermore, the terminal device immediately resets the second prohibition timer after sending the first indication information.

[0115] The timing value of the second prohibition timer can be configured by the network device for the terminal device, or it can be determined by the terminal device according to the protocol agreement. This disclosure does not limit this.

[0116] Furthermore, the second disable timer and the first disable timer can be the same timer or different timers, and the timing value of the second disable timer and the timing value of the first disable timer can be the same or different; this disclosure does not limit this.

[0117] By implementing the embodiments of this disclosure, the terminal device first receives a fourth indication information containing trigger conditions and a timer value corresponding to the specified prohibition timer sent by the network device. If the trigger conditions are met and the time interval between the current time and the previous uplink TA transmission is greater than the timer value corresponding to the specified prohibition timer, the terminal device then sends its corresponding uplink TA to the network device. In this way, it is ensured that the terminal device can accurately and orderly send its corresponding TA to the network device, and resources are not wasted by the terminal device sending the same indication information to the network device multiple times. This ensures that the network device performs RTD compensation for the terminal device and accurately schedules the signaling and service timing of the terminal.

[0118] Please see Figure 7 , Figure 7 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment of the disclosure. The method is configured to be executed by a network device as follows: Figure 7 As shown, the method may include, but is not limited to, the following steps:

[0119] Step 71: Receive first indication information sent by the terminal device, wherein the first indication information is used to indicate the uplink timing advance (TA) of the terminal device to the network device.

[0120] In order to track and compensate for NTN propagation delay, compensate for all RTDs of terminal devices, and perform accurate timing scheduling control of terminal devices, the terminal devices can proactively report their corresponding TA to the network devices.

[0121] Optionally, the first indication information in this disclosure may include at least one of the following: an open-loop uplink TA corresponding to the terminal device; a first uplink TA corresponding to all RTDs compensated by the terminal device; and a second uplink TA corresponding to a specific RTD compensated by the terminal device.

[0122] Optionally, the entire RTD is used to characterize the total round-trip time between the terminal and the satellite in the NTN system, and the corresponding first uplink TA may include open-loop uplink TA and closed-loop uplink TA.

[0123] Optionally, the closed-loop uplink TA can be determined and sent to the terminal device by the network device based on the arrival time of the uplink signal of the terminal device.

[0124] Optionally, the closed-loop uplink TA may also include a common TA determined by the network device based on the cell or corresponding beam where the terminal device is located. This common TA can be configured by the network device to the terminal device via broadcast or multicast.

[0125] Furthermore, a specific RTD can be the RTD corresponding to the closed-loop uplink TA, or it can be the RTD corresponding to the open-loop uplink TA, or it can be the RTD corresponding to both the open-loop and closed-loop uplink TAs. This disclosure does not limit this.

[0126] Optionally, in this disclosure, the uplink TA in the first indication information can be the absolute value of the TA currently corresponding to the terminal device, or it can be the change value of the TA currently corresponding to the terminal device relative to the TA reported last time.

[0127] For example, if the terminal device determines that the current uplink TA is 10ms, then the terminal can directly indicate this 10ms in the first indication information. Alternatively, if the terminal device determines that the current uplink TA is 10ms, and the last uplink TA reported by the terminal device was 8ms, that is, the current uplink TA is delayed by 2ms relative to the last reported uplink TA, then the terminal device can directly send this change value -2ms to the network device.

[0128] By implementing the embodiments of this disclosure, the terminal device can directly send its corresponding uplink TA to the network device. In this way, the network device can track and compensate for the rapid changes in NTN propagation delay, perform reliable and accurate RTD compensation for the terminal device, and accurately schedule the signaling and service timing of the terminal.

[0129] Please see Figure 8 , Figure 8 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment of the disclosure. The method is configured to be executed by a network device as follows: Figure 8 As shown, the method may include, but is not limited to, the following steps:

[0130] Step 81: Send a second indication message to the terminal device, wherein the second indication message is used to indicate the closed-loop uplink TA corresponding to the terminal device.

[0131] Optionally, the closed-loop uplink TA can be determined by the network device based on the arrival time of the uplink signal from the terminal device. That is, the network device can calculate the RTD based on the time of sending control information to the terminal device and the arrival time of the corresponding uplink signal sent by the terminal device, determine the closed-loop uplink TA based on the calculated RTD, and then send it to the terminal device.

[0132] Optionally, the closed-loop uplink TA can also be determined by the network device based on the cell or corresponding beam where the terminal device is located. Typically, different terminal devices located in the same cell or corresponding to the same beam may have the same portion of the closed-loop uplink TA. Therefore, the network device can, as needed, send the same portion of the closed-loop uplink TA corresponding to different terminal devices located in the same cell or corresponding to the same beam to the terminal devices in a unified manner through broadcast or multicast.

[0133] Optionally, the closed-loop uplink TA can also be determined by the network device based on the uplink signal arrival time of the terminal device and the cell it belongs to. Alternatively, the closed-loop uplink TA can be determined by the network device based on the uplink signal arrival time of the terminal device and the corresponding beam. This disclosure does not limit this.

[0134] Step 82: Receive first indication information sent by the terminal device, wherein the first indication information is used to indicate a first uplink TA to the network device, and the first uplink TA is determined by the terminal device based on the closed-loop uplink TA and the open-loop uplink TA.

[0135] Optionally, in this disclosure, the network device can receive the first uplink TA sent by the terminal device based on the MAC CE. For example, the network device can determine the absolute or relative value of the first uplink TA based on the configuration information sent to the terminal device, or according to the protocol agreement, based on the content carried by the specified bits in the acquired MAC CE. The meanings of the absolute and relative values ​​of the first uplink TA can be found in the detailed description of any embodiment of this disclosure, and will not be repeated here.

[0136] Optionally, in this embodiment of the present disclosure, the network device may also receive the first indication information sent by the terminal device based on UCI, or simultaneously receive the first indication information sent by the terminal device based on MAC CE and UCI. The first uplink TA in the first indication information can be either the absolute value or the relative value of the first uplink TA; this disclosure does not limit this.

[0137] By implementing the embodiments of this disclosure, after the terminal device determines its own corresponding open-loop uplink TA and receives the closed-loop uplink TA sent by the network device, it can determine its own corresponding first uplink TA and send the first uplink TA to the network device. In this way, the network device can accurately determine the uplink TA of the terminal device, thereby tracking the propagation delay of NTN, performing reliable and accurate RTD compensation for the terminal device, and accurately scheduling the signaling and service timing of the terminal.

[0138] Please see Figure 9 , Figure 9 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment of the disclosure. The method is configured to be executed by a network device as follows: Figure 9 As shown, the method may include, but is not limited to, the following steps:

[0139] Step 91: Based on the first indication information received by the MAC CE, determine the reference TA corresponding to the terminal device, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device.

[0140] Step 92: Based on the first indication information received by UCI, determine the offset TA corresponding to the terminal device, wherein the offset TA is used to characterize the change value in the TA corresponding to the terminal device.

[0141] Step 93: Determine the uplink TA corresponding to the terminal device based on the reference TA and the offset TA.

[0142] Typically, the uplink TA corresponding to a terminal device may include an open-loop uplink TA and a closed-loop uplink TA. The open-loop uplink TA can be determined by the terminal device based on its own location information and the location information of satellites in the NTN network. The closed-loop uplink TA is usually sent by the network device to the terminal device. The method for determining the closed-loop uplink TA can be found in the detailed description of any embodiment of this disclosure, and will not be repeated here.

[0143] In this embodiment of the disclosure, in order to ensure the reliability and timeliness of the TA sent by the terminal device to the network device, the terminal device can divide its corresponding uplink TA into two parts: the base TA and the offset TA.

[0144] Among them, the reference TA is a relatively fixed part of the TA corresponding to the terminal device, and the offset TA is used to characterize the part of the TA corresponding to the terminal device that changes more frequently.

[0145] For example, if the uplink TA corresponding to the terminal device is usually 20ms-28ms, then 20ms can be the base TA, and the rest can be the offset TA.

[0146] It should be noted that the method by which the terminal device divides the base TA and offset TA can be determined according to the protocol agreement or the network device configuration. This disclosure does not limit this.

[0147] In this embodiment of the disclosure, considering that the MAC layer has higher reliability but relatively larger transmission latency, the reference TA can be transmitted based on the MAC CE, while the offset TA can be transmitted based on the UCI. This ensures that the terminal device can accurately and reliably send its corresponding TA to the network device, while avoiding the network device's inability to perform RTD on the terminal device due to the loss of UCI.

[0148] By implementing the embodiments of this disclosure, the network device obtains the reference TA sent by the terminal device based on the MAC CE and receives the offset TA sent by the network device based on the UCI. Then, the uplink TA corresponding to the terminal device can be determined according to the reference TA and the offset TA. In this way, it is ensured that the network device can accurately and reliably obtain the TA corresponding to the terminal device to track the propagation delay of NTN, and it avoids the inability of the network device to perform RTD compensation for the terminal device due to the loss of UCI, thus accurately scheduling the signaling and service timing of the terminal.

[0149] Please see Figure 10 , Figure 10 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment of the disclosure. The method is configured to be executed by a network device as follows: Figure 10 As shown, the method may include, but is not limited to, the following steps:

[0150] Step 101: Send a fourth indication message to the terminal device, wherein the fourth indication message is used to indicate to the terminal device the triggering condition for sending the first indication message.

[0151] In this disclosure, the network device can also configure the terminal device with the trigger conditions for reporting uplink TA, so that the terminal device can report its corresponding uplink TA in an orderly manner according to the trigger conditions.

[0152] The triggering conditions may include any of the following: a specified timing period; the offset of the TA to be reported relative to the reference TA reaches a first threshold value, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device; the offset of the TA to be reported relative to the adjacent previously reported TA reaches a second threshold value.

[0153] Step 102: Receive the first instruction information sent by the terminal device.

[0154] For example, a network device can configure a specified time period for a terminal device to report uplink TA. Then, the terminal device can configure a corresponding trigger timer according to the specified time period, so that when the trigger timer reaches the specified time period, it can send a first indication message to the network device.

[0155] Alternatively, if the trigger condition is a first threshold value, and the first threshold value is 2ms and the base TA is 20ms, then if the current uplink TA of the terminal device is 25ms, the terminal device can determine that the offset of the TA to be reported relative to the base TA is 5ms, which is greater than the first threshold value of 2ms, thus meeting the trigger condition. Therefore, the terminal device can send the first indication information to the network device.

[0156] Alternatively, if the trigger condition is a second threshold value of 5ms, then if the current uplink TA is 30ms and the adjacent previously reported TA is 23ms, the terminal device can determine that the offset of the currently reported TA relative to the adjacent previously reported TA is 7ms, which is greater than the second threshold value, thus satisfying the trigger condition. Therefore, the terminal device can send the second indication information to the network device.

[0157] Optionally, in this disclosure, the network device may also directly send third instruction information to the network device to instruct the terminal device to send the first instruction information.

[0158] That is, the terminal device only sends the first indication information to the network device after receiving the third indication information sent by the network device, so as to indicate its corresponding uplink TA to the network device.

[0159] By implementing the embodiments of this disclosure, the network device first sends a fourth indication message containing triggering conditions to the terminal device, instructing the terminal device to send its corresponding uplink TA to the network device when the triggering conditions are met. In this way, it is ensured that the terminal device can accurately and orderly send its corresponding TA to the network device, thereby ensuring that the network device can track the NTN propagation delay, perform RTD compensation for the terminal device, and accurately schedule the signaling and service timing of the terminal.

[0160] Please see Figure 11 , Figure 11 This is a flowchart illustrating another uplink timing advance reporting method provided in this embodiment of the disclosure. The method is configured to be executed by a network device as follows: Figure 11 As shown, the method may include, but is not limited to, the following steps:

[0161] Step 111: Send a fourth indication message to the terminal device, wherein the fourth indication message is used to indicate to the terminal device the triggering condition for sending the first indication message.

[0162] The specific implementation of the triggering condition can be found in the detailed description of any embodiment of this disclosure, and will not be repeated here.

[0163] Step 112: Send the fifth indication information to the terminal device, wherein the fifth indication information is used to indicate the timing value of the specified prohibition timer to the terminal device, and the specified prohibition timer is used to control the minimum time interval for the terminal device to continuously send the first indication information to the network device.

[0164] Step 113: Receive the first instruction information sent by the terminal device.

[0165] Typically, since there may be multiple triggering conditions, in order to avoid multiple triggering conditions being triggered simultaneously or at very short intervals, which could lead to the terminal device sending the same indication information to the network device multiple times and wasting resources, in this embodiment of the disclosure, the terminal device may also control the time interval between two consecutive transmissions of the first indication information to the network device.

[0166] Specifically, the terminal device can set a first prohibition timer, which controls the time interval between two consecutive uplink TA reports from the terminal device to the network device. The terminal device will only send an uplink TA to the network device when the time interval between the current moment and the adjacent moment of the previous uplink TA transmission reaches the timer period of the first prohibition timer. Furthermore, the terminal device resets the first prohibition timer immediately after sending the first indication information.

[0167] The timing value of the first prohibition timer can be configured by the network device or determined according to the protocol agreement; this disclosure does not limit this.

[0168] Optionally, in this disclosure, the terminal device may send the first indication information to the network device only when it receives the third indication information sent by the network device and the time interval between the current time and the adjacent previous TA reporting time is greater than the timing value of the second prohibition timer.

[0169] Specifically, since the terminal device can send the first indication information to the network device only after receiving the third indication information sent by the network device, in this disclosure, to avoid sending the same first indication information to the network device multiple times, the terminal device can also set a second prohibition timer. This second prohibition timer controls the time interval between two consecutive uplink TA reports from the terminal device to the network device. After receiving the third indication information from the network device, it first determines whether the time interval between the current moment and the adjacent previous TA report is greater than the timer value of the second prohibition timer. If it is, the terminal device can send the first indication information to the network device; otherwise, it can refrain from sending the first indication information. Furthermore, the terminal device immediately resets the second prohibition timer after sending the first indication information.

[0170] The timing value of the second prohibition timer can be configured by the network device for the terminal device, or it can be determined by the terminal device according to the protocol agreement. This disclosure does not limit this.

[0171] Furthermore, the second disable timer and the first disable timer can be the same timer or different timers, and the timing value of the second disable timer and the timing value of the first disable timer can be the same or different; this disclosure does not limit this.

[0172] By implementing the embodiments of this disclosure, the network device first sends a fourth indication message containing trigger conditions and a timer value corresponding to a specified prohibition timer to the terminal device. This allows the terminal device to send its corresponding uplink TA to the network device only when the trigger conditions are met and the time interval between the current time and the previous uplink TA transmission is greater than the timer value corresponding to the specified prohibition timer. In this way, it is ensured that the terminal device can accurately and orderly send its corresponding TA to the network device, while avoiding the terminal device sending the same indication message to the network device multiple times, thus avoiding wasting resources. This ensures that the network device can perform RTD compensation for the terminal device and accurately schedule the signaling and service timing of the terminal.

[0173] In the embodiments provided above, the methods provided by the present disclosure have been described from the perspectives of terminal devices and network devices, respectively. To implement the functions of the methods provided in the embodiments of the present disclosure, the network device and the terminal device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions may be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0174] Please see Figure 12 This is a schematic diagram of the structure of a communication device 120 provided in an embodiment of this disclosure. Figure 12The communication device 120 shown may include a transceiver module 1201 and a processing module 1202. The transceiver module 1201 may include a sending module and / or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiver module 1201 can implement both sending and / or receiving functions.

[0175] The communication device 120 may be a terminal device (such as the terminal device in the aforementioned method embodiments), a device within a terminal device, or a device that can be used in conjunction with a terminal device. Alternatively, the communication device 120 may be a network device, a device within a network device, or a device that can be used in conjunction with a network device.

[0176] The communication device 120 is a terminal device (such as the terminal device in the aforementioned method embodiments):

[0177] The transceiver module 1201 is used to send first indication information to the network device, wherein the first indication information is used to indicate the uplink timing advance (TA) of the terminal device to the network device.

[0178] Optionally, the first indication information includes at least one of the following: an open-loop uplink TA corresponding to the terminal device; a first uplink TA corresponding to all round-trip time delays (RTDs) compensated by the terminal device; and a second uplink TA corresponding to a specific RTD compensated by the terminal device.

[0179] Optionally, the uplink TA is the absolute value of the uplink TA currently corresponding to the terminal device, or it is the change value of the uplink TA currently corresponding to the terminal device relative to the previously reported uplink TA.

[0180] Optionally, the above-mentioned device further includes a processing module for determining the open-loop uplink TA based on the positioning information of the terminal device and the position information of the satellites in the NTN.

[0181] Optionally, the transceiver module 1201 is further configured to receive second indication information sent by the network device, wherein the second indication information is used to indicate the closed-loop uplink TA corresponding to the terminal device;

[0182] Optionally, the above-mentioned device further includes a processing module 1202, used to determine the first uplink TA based on the closed-loop uplink TA and the open-loop uplink TA.

[0183] Optionally, the closed-loop uplink TA is determined by the network device based on the arrival time of the uplink signal from the terminal device; and / or, the closed-loop uplink TA is determined by the network device based on the cell or corresponding beam where the terminal device is located.

[0184] Optionally, the transceiver module 1201 is specifically used to send first indication information to the network device based on the Media Access Layer MAC control unit CE; and / or, to send first indication information to the network device based on uplink control information UCI.

[0185] Optionally, the transceiver module 1201 is specifically used to: determine the reference TA and offset TA corresponding to the terminal device, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device, and the offset TA is used to characterize the change value in the TA corresponding to the terminal device; send the reference TA to the network device based on the MAC CE; and send the offset TA to the network device based on the UCI.

[0186] Optionally, the transceiver module 1201 is specifically configured to: send the first indication information to the network device in response to the fulfillment of a trigger condition; or, in response to the fulfillment of a trigger condition and the time interval between the current time and the adjacent previous TA reporting time reaches the timing value of a first prohibition timer, send the first indication information to the network device; or, upon receiving a third indication information sent by the network device, send the first indication information to the network device, wherein the third indication information is used to instruct the terminal device to send the first indication information; or, upon receiving a third indication information sent by the network device and the time interval between the current time and the adjacent previous TA reporting time is greater than the timing value of a second prohibition timer, send the first indication information to the network device.

[0187] Optionally, the triggering conditions include any one of the following: a specified timing period; the offset of the currently reported TA relative to the reference TA reaches a first threshold value, wherein the reference TA is used to characterize the reference value in the uplink TA corresponding to the terminal device; the offset of the currently reported TA relative to the adjacent previously reported TA reaches a second threshold value.

[0188] Optionally, the transceiver module 1201 is further configured to receive a fourth indication information sent by the network device, wherein the fourth indication information is used to indicate to the terminal device the triggering condition for sending the first indication information.

[0189] Optionally, the transceiver module 1201 is further configured to receive a fifth indication information sent by the network device, wherein the fifth indication information is used to indicate a specified timeout value to the terminal device, and the specified timeout is used to control the minimum time interval for the terminal device to continuously send the first indication information to the network device.

[0190] The communication device disclosed herein allows the terminal device to directly send its corresponding uplink TA to the network device. In this way, the network device can accurately determine the uplink TA corresponding to the terminal device, thereby tracking the NTN propagation delay, performing reliable and accurate RTD compensation for the terminal device, and accurately scheduling the signaling and service timing of the terminal.

[0191] Communication device 120 is a network device:

[0192] The transceiver module 1201 is used to receive first indication information sent by the terminal device, wherein the first indication information is used to indicate the uplink timing advance (TA) of the terminal device to the network device.

[0193] Optionally, the first indication information includes at least one of the following: an open-loop uplink TA corresponding to the terminal device; a first uplink TA corresponding to all round-trip time delays (RTDs) compensated by the terminal device; and a second uplink TA corresponding to a specific RTD compensated by the terminal device.

[0194] Optionally, the uplink TA is the absolute value of the TA currently corresponding to the terminal device, or the change value of the TA currently corresponding to the terminal device relative to the previously reported TA.

[0195] Optionally, the transceiver module 1201 is further configured to send a second indication information to the terminal device, wherein the second indication information is used to indicate the closed-loop uplink TA corresponding to the terminal device.

[0196] Optionally, the above-mentioned device 120 further includes a processing module 1202, configured to: determine the closed-loop uplink TA based on the uplink signal arrival time of the terminal device; and / or determine the closed-loop uplink TA based on the cell or corresponding beam where the terminal device is located.

[0197] Optionally, the transceiver module 1201 is specifically used to: receive first indication information sent by the terminal device based on the Media Access Layer (MAC) control unit (CE); and / or, receive first indication information sent by the terminal device based on the Uplink Control Information (UCI).

[0198] Optionally, the processing module 1202 is configured to determine the reference TA corresponding to the terminal device based on the first indication information received by the MAC CE, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device.

[0199] Optionally, the processing module 1202 is further configured to determine the offset TA corresponding to the terminal device based on the first indication information received by the UCI, wherein the offset TA is used to characterize the change value in the TA corresponding to the terminal device.

[0200] The processing module 1202 is further configured to determine the uplink TA corresponding to the terminal device based on the reference TA and the offset TA.

[0201] Optionally, the transceiver module 1201 is further configured to send third indication information to the terminal device, wherein the third indication information is used to instruct the terminal device to send the first indication information.

[0202] Optionally, the transceiver module 1201 is further configured to send a fourth indication information to the terminal device, wherein the fourth indication information is used to indicate to the terminal device the triggering condition for sending the first indication information.

[0203] Optionally, the triggering conditions include any one of the following: a specified timing period; the offset of the TA to be reported relative to the reference TA reaches a first threshold value, wherein the reference TA is used to characterize the reference value in the uplink TA corresponding to the terminal device; the offset of the TA to be reported relative to the adjacent previously reported TA reaches a second threshold value.

[0204] Optionally, the transceiver module 1201 is further configured to send a fifth indication message to the terminal device, wherein the fifth indication message is used to indicate to the terminal device a specified timeout value for a prohibited timer, and the specified prohibited timer is used to control the minimum time interval for the terminal device to continuously send the first indication message to the network device.

[0205] The communication device network equipment proposed in this disclosure first sends a fourth indication message containing trigger conditions to the terminal equipment, instructing the terminal equipment to send its corresponding uplink TA to the network equipment when the trigger conditions are met. In this way, it is ensured that the terminal equipment can accurately and orderly send its corresponding TA to the network equipment, thereby ensuring that the network equipment can track the NTN propagation delay, perform RTD compensation for the terminal equipment, and accurately schedule the signaling and service timing of the terminal.

[0206] Please see Figure 13 , Figure 13 This is a schematic diagram of another communication device 130 provided in this embodiment. The communication device 130 can be a network device, a terminal device (such as the terminal device in the foregoing method embodiments), a chip, chip system, or processor that supports the network device in implementing the above methods, or a chip, chip system, or processor that supports the terminal device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0207] The communication device 130 may include one or more processors 1301. The processor 1301 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0208] Optionally, the communication device 130 may further include one or more memories 1302, on which a computer program 1304 may be stored. The processor 1301 executes the computer program 1304 to cause the communication device 130 to perform the method described in the above method embodiments. Optionally, the memory 1302 may also store data. The communication device 130 and the memory 1302 may be provided separately or integrated together.

[0209] Optionally, the communication device 130 may also include a transceiver 1305 and an antenna 1306. The transceiver 1305 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1305 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0210] Optionally, the communication device 130 may further include one or more interface circuits 1307. The interface circuits 1307 are used to receive code instructions and transmit them to the processor 1301. The processor 1301 executes the code instructions to cause the communication device 130 to perform the methods described in the above method embodiments.

[0211] Communication device 130 is a terminal device (as in the aforementioned method embodiments): processor 1301 is used to execute Figure 3 Step 31; Execute Figure 3 Step 33; Figure 4 Step 41; transceiver 1305 is used to perform Figure 2 Step 21 in the process; Figure 3 Step 32; Execute Figure 3 Step 34; Figure 4 Step 42; Figure 4 Step 43; Figure 5 Step 51; Execute Figure 5 Step 52; Figure 6 Step 61 in the middle; Figure 6 Step 62; Figure 6 Step 63 in the process.

[0212] Communication device 130 is a network device: transceiver 1305 is used to perform... Figure 7 Step 71; Execute Figure 8 Step 81 in the middle; Figure 8 Step 82; Figure 10 Step 101 in the middle; Figure 10 Step 102 in the middle; Figure 11 Step 111 in the middle; Figure 11 Step 112 in the middle; or Figure 11 Step 113 in the process. Processor 1301 is used to execute Figure 9 Step 91 in the middle; Figure 9 Step 92 in the middle; or Figure 9 Step 93 in the process.

[0213] In one implementation, the processor 1301 may include a transceiver for implementing receive and transmit functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0214] In one implementation, processor 1301 may store computer program 1303, which runs on processor 1301 and causes communication device 130 to perform the methods described in the above method embodiments. Computer program 1303 may be embedded in processor 1301, in which case processor 1301 may be implemented in hardware.

[0215] In one implementation, the communication device 130 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0216] The communication device described in the above embodiments may be a network device or a terminal device (such as the terminal device in the foregoing method embodiments), but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 13 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0217] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0218] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0219] (3) ASIC, such as modem;

[0220] (4) Modules that can be embedded in other devices;

[0221] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0222] (6) Others, etc.

[0223] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 14 The diagram shows the structure of the chip. Figure 14 The chip shown includes a processor 1401 and an interface 1402. There can be one or more processors 1401, and multiple interfaces 1402.

[0224] Regarding the case where the chip is used to implement the functions of the terminal device in the embodiments of this disclosure:

[0225] Interface 1402 is used for execution Figure 2 Step 21 in the process; Figure 3 Step 32; Execute Figure 3 Step 34; Figure 4 Step 42; Figure 4 Step 43; Figure 5 Step 51; Execute Figure 5 Step 52; Figure 6 Step 61 in the middle; Figure 6 Step 62; Figure 6 Step 63 in the process.

[0226] For cases where the chip is used to implement the functions of the network device in the embodiments of this disclosure:

[0227] Interface 1402 is used for execution Figure 7 Step 71; Execute Figure 8 Step 81 in the middle; Figure 8 Step 82; Figure 10 Step 101 in the middle; Figure 10 Step 102 in the middle; Figure 11 Step 111 in the middle; Figure 11 Step 112 in the middle; or Figure 11 Step 113 in the process.

[0228] Optionally, the chip also includes a memory 1403 for storing necessary computer programs and data.

[0229] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0230] This disclosure also provides an uplink timing advance reporting system, the system comprising the aforementioned... Figure 12 In the embodiments, the communication device serves as a terminal device and the communication device serves as a network device; alternatively, the system includes the aforementioned components. Figure 13 The embodiments include a communication device as a terminal device and a communication device as a network device.

[0231] This disclosure also provides a computer-readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0232] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0233] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0234] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0235] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0236] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0237] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0238] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0239] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0240] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for reporting uplink timing advance, characterized in that, The method is executed by a terminal device, and the method includes: In response to the fulfillment of the triggering condition, the MAC control unit (CE) of the Media Access Layer sends a first indication message to the network device. The first indication message is used to indicate to the network device the uplink timing advance (TA) of the terminal device. The triggering condition includes the offset of the TA to be reported relative to the adjacent previously reported TA reaching a second threshold value. The first indication message includes a first uplink TA that characterizes the total round-trip time delay (RTD) compensated by the terminal device.

2. The method as described in claim 1, characterized in that, The first indication information includes: Used to characterize the open-loop uplink TA corresponding to the terminal device; and The second uplink TA is used to characterize the specific RTD corresponding to the compensation of the terminal device.

3. The method as described in claim 2, characterized in that, The uplink TA is the change value of the current uplink TA of the terminal device relative to the previously reported uplink TA, wherein the change value of the uplink TA is carried by a designated bit in the MAC CE.

4. The method as described in claim 2, characterized in that, Also includes: The propagation distance between the terminal and the network device is determined based on the positioning information of the terminal device and the satellite position information in the NTN. The open-loop uplink TA is determined based on the propagation distance and electromagnetic wave propagation speed.

5. The method as described in claim 2, characterized in that, Also includes: Receive second indication information sent by the network device, wherein the second indication information is used to indicate the closed-loop uplink TA corresponding to the terminal device; The first uplink TA is determined based on the sum of the closed-loop uplink TA and the open-loop uplink TA.

6. The method as described in claim 5, characterized in that, The closed-loop uplink TA includes the uplink TA determined by the network device based on the arrival time of the uplink signal of the terminal device; and The closed-loop uplink TA includes a common TA determined by the network device based on the cell or corresponding beam where the terminal device is located, wherein the common TA is configured by the network device to the terminal device via multicast.

7. The method as described in claim 1, characterized in that, Sending the first indication information to the network device includes: Determine the reference TA and offset TA corresponding to the terminal device, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device, and the offset TA is used to characterize the change value in the TA corresponding to the terminal device, wherein the reference TA and offset TA are determined by the configuration of the network device; Based on the MAC CE, the reference TA is sent to the network device; The offset TA is sent to the network device based on UCI.

8. The method according to any one of claims 1-7, characterized in that, Sending the first indication information to the network device includes: In response to the fulfillment of a trigger condition and the time interval between the current time and the adjacent previous TA reporting time reaching the timing value of a first prohibition timer, the first indication information is sent to the network device, wherein the trigger condition includes receiving a third indication information sent by the network device.

9. The method as described in claim 8, characterized in that, The triggering conditions also include: The offset of the TA to be reported relative to the reference TA has reached the first threshold value, wherein the reference TA is used to characterize the reference value in the uplink TA corresponding to the terminal device.

10. The method according to any one of claims 1-7, characterized in that, Also includes: The terminal device receives a fourth indication message sent by the network device, wherein the fourth indication message is used to indicate to the terminal device the triggering condition for sending the first indication message.

11. The method as described in claim 8, characterized in that, Also includes: The terminal device receives a fifth indication message sent by the network device, wherein the fifth indication message is used to indicate a specified timeout value to the terminal device, and the specified timeout is used to control the minimum time interval for the terminal device to continuously send the first indication message to the network device.

12. A method for reporting uplink timing advance, characterized in that, The method is performed by a network device, and the method includes: Based on the Media Access Layer (MAC) Control Unit (CE), the network device receives first indication information sent by the terminal device. This first indication information is used to indicate the uplink timing advance (TA) of the terminal device to the network device. The first indication information includes a first uplink TA representing the total round-trip time (RTD) compensated by the terminal device. The first indication information is sent by the terminal device when a trigger condition is met. The trigger condition includes the offset of the currently reported TA relative to the previously reported TA reaching a second threshold value.

13. The method as described in claim 12, characterized in that, The first indication information includes: Used to characterize the open-loop uplink TA corresponding to the terminal device; and The second uplink TA is used to characterize the specific RTD corresponding to the compensation of the terminal device.

14. The method as described in claim 13, characterized in that, The uplink TA is the change value of the TA currently corresponding to the terminal device relative to the previously reported TA, wherein the change value of the uplink TA is carried by a designated bit in the MAC CE.

15. The method as described in claim 12, characterized in that, Also includes: Send a second indication message to the terminal device, wherein the second indication message is used to indicate the closed-loop uplink TA corresponding to the terminal device.

16. The method as described in claim 15, characterized in that, Also includes: The closed-loop uplink TA is determined based on the uplink signal arrival time of the terminal device. and, The common TAs included in the closed-loop uplink TA are determined based on the cell or corresponding beam where the terminal device is located, and the common TAs are configured for the terminal device via multicast.

17. The method as described in claim 12, characterized in that, Also includes: Based on the first indication information received by the MAC CE, a reference TA corresponding to the terminal device is determined, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device; Based on the first indication information received by UCI, the offset TA corresponding to the terminal device is determined, wherein the offset TA is used to characterize the change value in the TA corresponding to the terminal device, and the method for determining the base TA and the offset TA is configured by the network device. The uplink TA corresponding to the terminal device is determined based on the reference TA and the offset TA.

18. The method according to any one of claims 12-17, characterized in that, Also includes: Send a third instruction message to the terminal device, wherein the third instruction message is used to instruct the terminal device to send the first instruction message.

19. The method according to any one of claims 12-17, characterized in that, Also includes: Send a fourth indication message to the terminal device, wherein the fourth indication message is used to indicate to the terminal device the trigger condition for sending the first indication message.

20. The method as described in claim 19, characterized in that, The triggering conditions include: The offset of the TA to be reported relative to the reference TA reaches a first threshold value, wherein the reference TA is used to characterize the reference value in the uplink TA corresponding to the terminal device.

21. The method as described in claim 19, characterized in that, Also includes: A fifth indication message is sent to the terminal device, wherein the fifth indication message is used to indicate to the terminal device the timing value of a specified prohibition timer, and the specified prohibition timer is used to control the minimum time interval for the terminal device to continuously send the first indication message to the network device.

22. A communication device, characterized in that, The device is configured on the terminal device side, and the device includes: The transceiver module is configured to send first indication information to the network device based on the Media Access Layer MAC Control Unit (CE) in response to a trigger condition being met. The first indication information is used to indicate to the network device the uplink timing advance (TA) of the terminal device. The trigger condition includes the offset of the currently reported TA relative to the adjacent previously reported TA reaching a second threshold value. The first indication information includes a first uplink TA corresponding to the total round-trip time delay (RTD) compensated by the terminal device.

23. The apparatus as claimed in claim 22, characterized in that, The first indication information includes: Used to characterize the open-loop uplink TA corresponding to the terminal device; and The second uplink TA is used to characterize the specific RTD corresponding to the compensation of the terminal device.

24. The apparatus as claimed in claim 23, characterized in that, The uplink TA is the change value of the current uplink TA of the terminal device relative to the previously reported uplink TA, wherein the change value of the uplink TA is carried by a designated bit in the MAC CE.

25. The apparatus as claimed in claim 23, characterized in that, Also includes: The processing module is used to determine the open-loop uplink TA based on the positioning information of the terminal device and the satellite position information in the NTN, the propagation distance between the terminal and the network device, and the propagation distance and the electromagnetic wave propagation speed.

26. The apparatus as claimed in claim 23, characterized in that, The transceiver module is further configured to receive second indication information sent by the network device, wherein the second indication information is used to indicate the closed-loop uplink TA corresponding to the terminal device; The device further includes: The processing module is used to determine the first uplink TA based on the sum of the closed-loop uplink TA and the open-loop uplink TA.

27. The apparatus as claimed in claim 26, characterized in that, The closed-loop uplink TA includes the uplink TA determined by the network device based on the arrival time of the uplink signal of the terminal device; and, The closed-loop uplink TA includes a common TA determined by the network device based on the cell or corresponding beam where the terminal device is located, wherein the common TA is configured by the network device to the terminal device via multicast.

28. The apparatus as claimed in claim 22, characterized in that, The transceiver module is specifically used for: Determine the reference TA and offset TA corresponding to the terminal device, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device, and the offset TA is used to characterize the change value in the TA corresponding to the terminal device, wherein the reference TA and offset TA are determined by the configuration of the network device; Based on the MAC CE, the reference TA is sent to the network device; The offset TA is sent to the network device based on UCI.

29. The apparatus according to any one of claims 22-28, characterized in that, The transceiver module is specifically used for: In response to the fulfillment of a trigger condition and the time interval between the current time and the adjacent previous TA reporting time reaching the timing value of a first prohibition timer, the first indication information is sent to the network device, wherein the trigger condition includes receiving a third indication information sent by the network device.

30. The apparatus as claimed in claim 29, characterized in that, The triggering conditions also include: The offset of the TA to be reported relative to the reference TA has reached the first threshold value, wherein the reference TA is used to characterize the reference value in the uplink TA corresponding to the terminal device.

31. The apparatus according to any one of claims 22-28, characterized in that, The transceiver module is further configured to receive a fourth indication information sent by the network device, wherein the fourth indication information is used to indicate to the terminal device the triggering condition for sending the first indication information.

32. The apparatus as claimed in claim 29, characterized in that: The transceiver module is further configured to receive a fifth indication message sent by the network device, wherein the fifth indication message is used to indicate a specified timeout value to the terminal device, and the specified timeout is used to control the minimum time interval for the terminal device to continuously send the first indication message to the network device.

33. A communication device, characterized in that, The device is configured on the network device side, and the device includes: The transceiver module is configured to receive first indication information sent by a terminal device based on the Media Access Layer (MAC) control unit (CE). The first indication information is used to indicate to the network device the uplink timing advance (TA) of the terminal device. The first indication information includes a first uplink TA representing the total round-trip time (RTD) compensated by the terminal device. The first indication information is sent by the terminal when a triggering condition is determined to be met. The triggering condition includes the offset of the currently reported TA relative to the adjacent previously reported TA reaching a second threshold value.

34. The apparatus as claimed in claim 33, characterized in that, The first indication information includes: Used to characterize the open-loop uplink TA corresponding to the terminal device; and The second uplink TA is used to characterize the specific RTD corresponding to the compensation of the terminal device.

35. The apparatus as claimed in claim 34, characterized in that, The uplink TA is the change value of the TA currently corresponding to the terminal device relative to the previously reported TA, wherein the change value of the uplink TA is carried by a designated bit in the MAC CE.

36. The apparatus as claimed in claim 33, characterized in that, The transceiver module is further configured to send a second indication information to the terminal device, wherein the second indication information is used to indicate the closed-loop uplink TA corresponding to the terminal device.

37. The apparatus as claimed in claim 36, characterized in that, The device further includes a processing module for: The closed-loop uplink TA is determined based on the uplink signal arrival time of the terminal device. and, The common TAs included in the closed-loop uplink TAs are determined based on the cell or corresponding beam where the terminal device is located, and the common TAs are configured for the terminal device via multicast.

38. The apparatus as claimed in claim 33, characterized in that, The device further includes: The processing module is configured to determine the reference TA corresponding to the terminal device based on the first indication information received by the MAC CE, wherein the reference TA is used to characterize the reference value in the TA corresponding to the terminal device; The processing module is further configured to determine the offset TA corresponding to the terminal device based on the first indication information received by UCI, wherein the offset TA is used to characterize the change value in the TA corresponding to the terminal device, and the method for determining the base TA and the offset TA is configured by the network device. The processing module is further configured to determine the uplink TA corresponding to the terminal device based on the reference TA and the offset TA.

39. The apparatus according to any one of claims 33-38, characterized in that, The transceiver module is further configured to send a third indication information to the terminal device, wherein the third indication information is used to instruct the terminal device to send the first indication information.

40. The apparatus according to any one of claims 33-38, characterized in that, The transceiver module is further configured to send a fourth indication information to the terminal device, wherein the fourth indication information is used to indicate to the terminal device the triggering condition for sending the first indication information.

41. The apparatus as claimed in claim 40, characterized in that, The triggering conditions include: The offset of the TA to be reported relative to the reference TA reaches a first threshold value, wherein the reference TA is used to characterize the reference value in the uplink TA corresponding to the terminal device.

42. The apparatus as claimed in claim 40, characterized in that: The transceiver module is further configured to send a fifth indication message to the terminal device, wherein the fifth indication message is used to indicate to the terminal device a specified timeout value for a timer that is prohibited, and the specified timer is used to control the minimum time interval for the terminal device to continuously send the first indication message to the network device.

43. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as described in any one of claims 1 to 11.

44. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as described in any one of claims 12 to 21.

45. A communication device, characterized in that, include: Processor and interface circuitry; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method as described in any one of claims 1 to 11.

46. ​​A communication device, characterized in that, include: Processor and interface circuitry; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method as described in any one of claims 12 to 21.

47. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 11 to be implemented.

48. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 12 to 21 to be implemented.

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