WO2020215979A1 - 一种通信方法、终端、网络设备及存储介质 - Google Patents

一种通信方法、终端、网络设备及存储介质 Download PDF

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Publication number
WO2020215979A1
WO2020215979A1 PCT/CN2020/081337 CN2020081337W WO2020215979A1 WO 2020215979 A1 WO2020215979 A1 WO 2020215979A1 CN 2020081337 W CN2020081337 W CN 2020081337W WO 2020215979 A1 WO2020215979 A1 WO 2020215979A1
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WIPO (PCT)
Prior art keywords
terminal device
message
adjustment information
target adjustment
uplink transmission
Prior art date
Application number
PCT/CN2020/081337
Other languages
English (en)
French (fr)
Inventor
孔垂丽
张公正
乔云飞
杜颖钢
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2021563075A priority Critical patent/JP7275315B2/ja
Priority to EP20795197.1A priority patent/EP3952490A4/en
Publication of WO2020215979A1 publication Critical patent/WO2020215979A1/zh
Priority to US17/508,564 priority patent/US11924793B2/en
Priority to US18/424,227 priority patent/US20240163824A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay

Definitions

  • This application relates to the field of braking equipment for vehicles, and in particular to a communication method, terminal, network equipment and storage medium.
  • the network device sends a time advance (TA) to the terminal device, and the terminal device adjusts the time for sending the uplink signal according to the received TA, thereby achieving uplink timing synchronization between the terminal device and the network device.
  • TA time advance
  • the time advance is twice the amount of transmission time, and twice the amount of transmission time is also called round trip time (RTT).
  • RTT round trip time
  • the terminal device after receiving downlink data, the terminal device generally waits for several time slots (slots) before performing uplink transmission.
  • the RTT is long, which will cause the terminal equipment to be unable to complete the time advance processing within the existing uplink transmission time. Therefore, in the satellite communication system, how to enable the terminal equipment to complete the time advance processing is an urgent solution.
  • the embodiments of the application provide a communication method, terminal, network device, and storage medium, so that the terminal device can flexibly adjust the uplink transmission time according to the target adjustment information and TA, and ensure that the terminal device completes operations such as time advance and signal processing. Upstream orthogonality.
  • the first aspect of this application provides a communication method, which can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division Duplex (time division duplex, TDD), fifth generation (5G) mobile communication system, new radio (NR) communication system, and future mobile communication systems, etc. It may include: the terminal device acquires a first message, where the first message carries target adjustment information.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • 5G fifth generation
  • NR new radio
  • the terminal device can receive the first message sent by other devices, for example, the terminal device receives the first message sent by the network device, or the terminal device acquiring the first message may also include the terminal device acquiring its own first message, or it may also include the terminal device passing through
  • the first message is obtained by searching the channel, and the embodiment of the present application does not limit the specific manner in which the terminal device obtains the first message.
  • the first message carries target adjustment information, and the target adjustment information is used by the terminal device to adjust the uplink transmission time.
  • the terminal device obtains the second message, and the second message carries the timing advance TA.
  • the network device estimates the TA according to the random access preamble, and sends msg2 to the terminal device, and the msg2 carries the TA.
  • the terminal device may also obtain the TA in other ways.
  • the embodiment of the present application does not limit the manner in which the terminal device obtains the TA.
  • the network device may determine the TA value of each terminal device based on measuring the uplink transmission of the corresponding terminal device. Therefore, as long as the terminal device has uplink transmission, the network device can use it to estimate the TA value and send it to the terminal device through a downlink message.
  • the terminal device adjusts the uplink transmission time according to the target adjustment information and TA. From the first aspect, it can be seen that the terminal device can flexibly adjust the uplink transmission time according to the target adjustment information, ensuring that the terminal device completes operations such as time advance and signal processing, and ensures the orthogonality of the uplink.
  • the terminal device adjusts the uplink transmission time according to the target adjustment information and TA, which may include: the terminal device adjusts the interval between the information and the first subcarrier according to the target.
  • the corresponding relationship and TA are used to adjust the uplink transmission time.
  • the first subcarrier interval is the subcarrier interval adopted by the terminal device.
  • the corresponding relationship is pre-stored in the terminal device, and the corresponding relationship is also pre-stored in the network device.
  • the target adjustment information is an adjustment time of the uplink transmission time corresponding to the second subcarrier interval.
  • the terminal device adjusts the uplink transmission time according to the target adjustment information and TA, which may include: when the subcarrier interval of the terminal device is the third subcarrier interval, the terminal device determines according to the preset relationship between the third subcarrier interval and the second subcarrier interval The first time, the first time is the adjustment time of the uplink transmission time corresponding to the third subcarrier interval.
  • the terminal device adjusts the uplink transmission time according to the first time and TA.
  • the terminal device obtains the first message, and the first message carries the target
  • the adjustment information may include: the terminal device receives the system information block SIB1 message.
  • SIB1 provides the initial access of the terminal device.
  • SIB2 provides a message for cell reselection.
  • the transmission of other SIBs can be transmitted in two ways: one is to perform periodic transmission at a fixed time interval. Second, after the terminal device is connected to the network, it is sent based on the request of the terminal device to reduce signaling overhead.
  • the target adjustment information may be carried in the SIB1 message.
  • the terminal device obtains the first message, and the first message carries the target
  • the adjustment information may include: the terminal device receives the downlink control information DCI message, and the network device sends the DCI message to the terminal device for data transmission between the network device and the terminal device.
  • the network device sends DCI to the terminal device through the PDCCH, and the DCI message may include scheduling information of the data channel, and based on the scheduling information, the network device and the terminal device perform data transmission through the data channel.
  • the target adjustment information may be carried in the DCI message.
  • the terminal device obtains the first message, and the first message carries the target
  • the adjustment information may include: the terminal device receives the random access response message msg2, the msg2 message may include a cyclic redundancy check (cyclic redundancy check, CRC), and the CRC uses a random access-radio network temporary identifier (random access-radio network temporary). identifier, RA-RNTI) and target adjustment information are scrambled.
  • the terminal device obtains the first message, and the first message carries the target
  • the adjustment information may include: the terminal device receives the system information block SIB1 message, and the SIB1 message carries the first target adjustment information.
  • the terminal device receives the downlink control information DCI message, and the DCI message carries the second target adjustment information.
  • the terminal device adjusting the uplink sending time according to the target adjustment information and the TA may include: the terminal device adjusting the uplink sending time according to the first target adjustment information and the second target adjustment information and the TA.
  • the terminal device obtains the first message, and the first message carries the target
  • the adjustment information may include: the terminal device receives the system information block SIB1 message, and the SIB1 message carries the first target adjustment information.
  • the terminal device receives the downlink control information DCI message, and the DCI message carries the second target adjustment information.
  • the terminal device receives the random access response message msg2.
  • the msg2 message may include a cyclic redundancy check (CRC), and the CRC uses a random access-radio network temporary identifier (RA-RNTI) Scrambling with target adjustment information.
  • CRC cyclic redundancy check
  • RA-RNTI random access-radio network temporary identifier
  • the terminal device performs a descrambling operation on the CRC to obtain the third target adjustment information.
  • the terminal device adjusting the uplink sending time according to the target adjustment information and the TA may include: the terminal device adjusting the uplink sending time according to the first target adjustment information, the second target adjustment information, and the third target adjustment information, and the TA.
  • the terminal device obtains a first message, the first message carries target adjustment information, and the terminal device obtains a physical cell identity (PCI), PCI
  • PCI physical cell identity
  • the terminal device obtains a physical cell identity (PCI)
  • PCI As a physical cell identifier, it provides the function of identifying the cell, so that the terminal device can distinguish the wireless signals of different cells.
  • PCIs there are 1008 PCIs in the 5G NR system. Within an area, a set of PCI values are used to distinguish different cells. In areas farther from the area, the above PCI values will be reused accordingly. For the cells covered by a satellite, the PCI values are different to distinguish the cells.
  • the terminal device may include: binding the PCI to the included angle ⁇ , where the included angle ⁇ is the horizontal included angle between the cell and the satellite.
  • the terminal device may further include: the terminal device calculates the target adjustment information according to a preset formula according to the acquired included angle ⁇ .
  • the terminal device obtains a first message, the first message carries target adjustment information, and the ephemeris refers to the measurement in the global positioning system (global positioning system).
  • the precise position or trajectory table of satellite operation over time may include: the terminal device receives the broadcast message sent by the satellite, and the broadcast message carries the position information of the satellite.
  • the terminal device Before the terminal device adjusts the uplink transmission time according to the target adjustment information and TA, it may also include: the terminal device obtains target adjustment information according to its own location information and satellite location information.
  • the method may further include: after the terminal device receives the message msg3 for the first scheduled transmission, Waiting for the preset time to start the first timer, which is used to monitor the contention resolution message msg4. Specifically, after sending the msg3, the terminal device starts the first timer to monitor the msg4, so as to solve the contention conflict problem in random access.
  • the first timer as ra-ContentionResolutionTimer as an example, the timer can support up to 64 subframes. For GEO satellites, it is far from covering the RTT of more than 500 milliseconds.
  • the time to turn on the first timer is offset according to a preset value. For example, for GEO satellites, after sending msg3, you can wait 544ms, and then turn on the ra-ContentionResolutionTimer timer to monitor msg4 . It should be noted that the range of the first timer can also be adjusted directly. For example, for satellite systems, the maximum supported timing length of the first timer can be adjusted according to actual needs. For example, the maximum supported timing length can be modified to 500 Sub-frame.
  • a second aspect of the present application provides a communication method, which may include: a network device sending a first message, the first message carrying target adjustment information.
  • the network device sends a second message.
  • the second message carries a timing advance TA, and the target adjustment information and TA are used for the terminal device to adjust the uplink transmission time.
  • the network device pre-stores the correspondence between the target adjustment information and the subcarrier spacing, and the correspondence is also stored in the terminal device.
  • the target adjustment information is adjustment information of the uplink transmission time corresponding to the target subcarrier interval.
  • the network device sends a first message, and the first message carries Target adjustment information can include:
  • the network device sends a system information block SIB1 message, and the SIB1 message carries target adjustment information.
  • the network device sends a first message, and the first message carries
  • the target adjustment information may include: the network device sends a downlink control information DCI message, and the DCI message carries the target adjustment information.
  • the network device sends a first message, and the first message carries
  • the target adjustment information may include: the network device sends a random access response message msg2, and the msg2 message may include a cyclic redundancy check CRC.
  • the CRC uses the random access wireless network temporary identifier RA-RNTI and target adjustment information for scrambling.
  • the network device sends a first message, and the first message carries
  • the target adjustment information may include: the first network device sends a system information block SIB1 message, and the SIB1 message carries the first target adjustment information.
  • the second network device sends a downlink control information DCI message, and the DCI message carries the second target adjustment information.
  • a third aspect of the present application provides a communication method, which may include: a terminal device adjusting a first uplink transmission time to a second uplink transmission time, and the second uplink transmission time is increased by p times on the basis of the first uplink transmission time Slot, the p is an integer greater than 4.
  • that the terminal device adjusts the first uplink transmission time to the second uplink transmission time may include: the terminal device sets the first uplink transmission time according to the first relationship The transmission time is adjusted to the second uplink transmission time, the first relationship is pre-stored in the terminal device, and the first relationship is the corresponding relationship between the first satellite and the adjustment time of the first uplink transmission time.
  • the fourth aspect of the present application provides a communication system, which may include terminal equipment and network equipment.
  • the terminal device may be the terminal device described in the first aspect and any one of the possible implementation manners of the first aspect of the application
  • the network device may be any one of the second aspect and any one of the possible implementation manners of the second aspect of the application Described network equipment.
  • the fifth aspect of the present application provides a communication system, which may include terminal equipment and network equipment.
  • the terminal device may be the terminal device described in the third aspect and any possible implementation manner of the third aspect of this application, and the network device may be described in any possible implementation manner of the second aspect and the second aspect of this application Network equipment.
  • a sixth aspect of the present application provides a terminal device, which has the function of implementing the foregoing first aspect or any one of the possible implementation methods of the first aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • a seventh aspect of the present application provides a terminal device, which has the function of implementing the foregoing third aspect or any one of the possible implementation methods of the third aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the eighth aspect of the present application provides a network device that has the function of implementing the foregoing second aspect or any one of the possible implementation methods of the second aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • a ninth aspect of the present application provides a terminal device, including: a storage unit for storing computer-readable instructions.
  • the transceiver unit is configured to obtain a first message, and the first message carries target adjustment information.
  • the transceiver unit is also used to obtain a second message, where the second message carries the timing advance TA.
  • the processing unit is configured to adjust the uplink transmission time according to the computer readable execution stored in the storage unit and the target adjustment information and TA obtained by the transceiver unit.
  • the storage unit is further configured to store the correspondence between the target adjustment information and the first subcarrier interval.
  • the processing unit is specifically configured to adjust the uplink transmission time according to the corresponding relationship between the target adjustment information stored in the storage unit and the first subcarrier interval and the TA obtained by the transceiver unit.
  • the first subcarrier interval is the subcarrier interval used by the terminal device, corresponding to The relationship is pre-stored in the terminal device.
  • the target adjustment information is the adjustment time of the uplink transmission time corresponding to the second subcarrier interval
  • the subcarrier interval of the terminal device is the third subcarrier interval
  • the processing unit is specifically configured to determine the first time according to the preset relationship between the third subcarrier interval and the second subcarrier interval, where the first time is the adjustment time of the uplink transmission time corresponding to the third subcarrier interval.
  • the processing unit is specifically configured to adjust the uplink transmission time according to the first time and TA.
  • the transceiver unit is specifically configured to receive the system information block SIB1 by the device.
  • SIB1 message carries target adjustment information.
  • the transceiver unit is specifically configured to receive a downlink control information DCI message ,
  • the DCI message carries target adjustment information.
  • the transceiver unit is specifically configured to receive a random access response message
  • the msg2, msg2 message includes a cyclic redundancy check CRC.
  • the CRC uses the random access wireless network temporary identification RA-RNTI and target adjustment information for scrambling.
  • the processing unit is also used to perform a descrambling operation on the CRC to obtain target adjustment information.
  • the transceiver unit is specifically configured to receive the system information block SIB1 message ,
  • the SIB1 message carries the first target adjustment information.
  • the transceiver unit is specifically configured to receive a downlink control information DCI message, and the DCI message carries the second target adjustment information.
  • the processing unit is specifically configured to adjust the uplink transmission time according to the first target adjustment information, the second target adjustment information, and the TA.
  • the transceiver unit is specifically configured to obtain the physical cell identity PCI.
  • the PCI is bound to the included angle ⁇ , and the included angle ⁇ is the difference between the cell and the satellite. Horizontal angle.
  • the processing unit is further configured to calculate the target adjustment information according to a preset formula according to the acquired included angle ⁇ .
  • the transceiver unit is specifically configured to receive a broadcast message sent by a satellite, and the broadcast message carries location information of the satellite.
  • the processing unit is also used to calculate target adjustment information according to its own position information and satellite position information according to a preset formula.
  • the processing unit is further configured to be used after the transceiver unit receives the message msg3 for the first scheduled transmission , Waiting for the preset time to start the first timer, the first timer is used to monitor the contention resolution message msg4.
  • the storage unit and the processing unit may be divided into one unit.
  • a tenth aspect of the present application provides a network device, including: a storage unit for storing computer-readable instructions.
  • It also includes a transceiver unit coupled with the storage unit, configured to execute the computer-readable instructions in the storage unit to perform the following operations: sending a first message, the first message carrying target adjustment information.
  • the second message is sent, and the second message carries the time advance TA, the target adjustment information and the TA are used for the terminal device to adjust the uplink transmission time.
  • the storage unit is specifically configured to store the corresponding relationship between the target adjustment information and the subcarrier spacing, and the corresponding relationship is also stored in the terminal device.
  • the target adjustment information is adjustment information of uplink transmission time corresponding to the target subcarrier interval.
  • the transceiver unit is specifically configured to send the system information block SIB1 message ,
  • the SIB1 message carries target adjustment information.
  • the transceiver unit is specifically configured to send a downlink control information DCI message ,
  • the DCI message carries target adjustment information.
  • the transceiver unit is specifically configured to send a random access response message
  • the msg2, msg2 message includes a cyclic redundancy check CRC.
  • the CRC uses the random access wireless network temporary identification RA-RNTI and target adjustment information for scrambling.
  • the network device includes a first network device and a second network device , where the first network device includes a first transceiver unit, and the second network device includes a second transceiver unit, where the first transceiver unit is specifically configured to send a system information block SIB1 message, and the SIB1 message carries the first target adjustment information.
  • the second transceiver unit is specifically used to send a downlink control information DCI message, and the DCI message carries the second target adjustment information.
  • the eleventh aspect of the present application provides a computer-readable storage medium, which stores instructions in the computer-readable storage medium, and when it runs on a computer, the computer can execute the first aspect or any one of the first aspects. Implementation method of communication.
  • a twelfth aspect of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when it runs on a computer, the computer can execute any one of the second aspect or the second aspect described above. Implementation method of communication.
  • a thirteenth aspect of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium. When it runs on a computer, the computer can execute the third aspect or any one of the third aspects. Implementation method of communication.
  • the fourteenth aspect of the present application provides a computer program product containing instructions, which, when run on a computer, enables the computer to execute the communication method of the first aspect or any one of the possible implementation manners of the first aspect.
  • the fifteenth aspect of the present application provides a computer program product containing instructions, which, when run on a computer, enables the computer to execute the communication method of the second aspect or any one of the possible implementation manners of the second aspect.
  • the sixteenth aspect of the present application provides a computer program product containing instructions, which when running on a computer, enables the computer to execute the communication method of the third aspect or any one of the possible implementation manners of the third aspect.
  • a seventeenth aspect of the present application provides a chip system, which includes a processor, and is configured to support a terminal device to implement the above-mentioned first aspect or the functions involved in any one of the possible implementation manners of the first aspect.
  • the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • An eighteenth aspect of the present application provides a chip system, which includes a processor, and is configured to support a terminal device to implement the above-mentioned third aspect or any one of the possible implementation manners of the third aspect.
  • the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • a nineteenth aspect of the present application provides a chip system, which includes a processor, and is configured to support a network device to implement the above-mentioned second aspect or any one of the possible implementation manners of the second aspect.
  • the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the network device.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • the embodiment of the application allows the terminal device to flexibly adjust the uplink transmission time according to the target adjustment information and the TA, to ensure that the terminal device completes operations such as time advance and signal processing, and ensures the orthogonality of the uplink.
  • Figure 1a is a schematic diagram of a wireless communication system applicable to an embodiment of the present application
  • Figure 1b is a schematic diagram of a wireless communication system suitable for an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a random access process in an NR system according to an embodiment of the application
  • FIG. 3 is a schematic diagram of the distance from the terminal device to the satellite in the satellite system according to an embodiment of the application;
  • FIG. 5 is a schematic diagram of an embodiment of a communication method in an embodiment of this application.
  • FIG. 6 is a schematic diagram of another embodiment of the communication method in the embodiment of this application.
  • FIG. 7 is a schematic diagram of another embodiment of a communication method in an embodiment of this application.
  • FIG. 8 is a schematic diagram of another embodiment of a communication method in an embodiment of this application.
  • FIG. 9 is a schematic diagram of another embodiment of a communication method in an embodiment of this application.
  • FIG. 10 is a schematic diagram of another embodiment of a communication method in an embodiment of this application.
  • FIG. 11 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 13 is a schematic diagram of the hardware structure of another communication device provided by an embodiment of the application.
  • FIG. 14 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • the embodiments of the present application provide a communication method, terminal equipment, network equipment, and storage medium.
  • the terminal equipment adjusts the uplink transmission time according to the acquired target adjustment information and TA to ensure that the terminal equipment completes operations such as time advance and signal processing, and ensures the uplink transmission time. Orthogonality. Detailed descriptions are given below.
  • the naming or numbering of the steps appearing in this application does not mean that the steps in the method flow must be executed in the time/logical order indicated by the naming or numbering.
  • the named or numbered process steps can be implemented according to the The technical purpose changes the execution order, as long as the same or similar technical effects can be achieved.
  • the division of modules presented in this application is a logical division. In actual applications, there may be other divisions. For example, multiple modules can be combined or integrated in another system, or some features can be ignored , Or not to execute, in addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some ports, and the indirect coupling or communication connection between modules may be electrical or other similar forms. There are no restrictions in the application.
  • the modules or sub-modules described as separate components may or may not be physically separate, may or may not be physical modules, or may be distributed to multiple circuit modules, and some or all of them may be selected according to actual needs Module to achieve the purpose of this application program.
  • pre-defined or “preset” means that the corresponding code, table or other information that can be used to indicate related information can be pre-stored in the device (for example, including terminal equipment and network equipment) This application does not limit the specific implementation method.
  • pre-defined may refer to the definition in the agreement.
  • reporting ACK and feedback ACK are often used interchangeably, but those skilled in the art can understand its meaning.
  • feedback ACK can essentially be sending ACK through a physical uplink channel. Therefore, in the embodiments of the present application, when the differences are not emphasized, the meanings to be expressed are consistent.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • 5G fifth generation
  • NR new radio
  • FIG. 1a and FIG. 1b are schematic diagrams of a wireless communication system suitable for embodiments of the present application.
  • the wireless communication system may include a single or multiple network devices, or as shown in FIG. 1b, the communication system may include a single or multiple terminal devices.
  • a single network device can transmit data or control signaling to a single or multiple terminal devices. Multiple network devices can also simultaneously transmit data or control signaling for a single terminal device.
  • the wireless communication system can support coordinated multiple points transmission (CoMP), that is, multiple cells or multiple network devices can cooperate to participate in the data transmission of a terminal device or jointly receive data sent by a terminal device, or multiple A cell or multiple network devices perform coordinated scheduling or coordinated beamforming.
  • CoMP coordinated multiple points transmission
  • the multiple cells may belong to the same network device or different network devices, and may be selected according to channel gain or path loss, received signal strength, received signal instruction, and the like.
  • the network device in the wireless communication system can be any device with wireless transceiver function or a chip that can be installed in the device.
  • the device includes but is not limited to: base station, evolved node B (eNB) , Femtocells, access points (AP), wireless relay nodes, wireless backhaul nodes, transmission points (TP), or transmission and reception points in the wireless fidelity (WIFI) system and reception point, TRP), etc., it can also be the gNB in the NR system, or it can be a component or part of the equipment that constitutes a base station, such as a centralized unit (CU), a distributed unit (DU) or a baseband Unit (baseband unit, BBU), etc.
  • CU centralized unit
  • DU distributed unit
  • BBU baseband unit
  • wireless access network equipment is referred to as network equipment.
  • network equipment in this application refers to wireless access network equipment.
  • the network device may refer to the network device itself, or may be a chip applied to the network device to complete the wireless communication processing function.
  • gNB may include CU and DU.
  • the gNB may also include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions
  • DU implements wireless link
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • DU implements wireless link
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network equipment in the access network RAN, and the CU can also be divided into network equipment in the core network CN, which is not limited here.
  • the terminal equipment in the wireless communication system may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), and so on.
  • the terminal equipment in the embodiments of this application can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, and can also be applied to virtual reality (VR) and augmented reality (AR). ), industrial control, self-driving, remote medical, smart grid, transportation safety, smart city, and smart home ) And other wireless terminals.
  • the aforementioned terminal devices and chips applicable to the aforementioned terminal devices are collectively referred to as terminal devices. It should be understood that the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • FIG. 1a or FIG. 1b is only for ease of understanding and schematically shows network equipment and terminal equipment, but this should not constitute any limitation to this application.
  • the wireless communication system may also include more or less numbers of networks.
  • Devices can also include a larger number of terminal devices.
  • the network devices communicating with different terminal devices can be the same network device or different network devices.
  • the number of network devices communicating with different terminal devices can be the same. It can also be different, and this application includes but is not limited to this.
  • the network device sends the time advance (TA) to the terminal device.
  • TA can also be called the timing advance.
  • the network device can control the uplink from different terminal devices by appropriately controlling the offset of each terminal device. The time when the signal arrives at the network equipment.
  • the uplink information can be sent according to a small timing advance.
  • the signal has a large transmission delay.
  • the terminal device adjusts the time for sending the uplink signal according to the received TA, so as to realize the uplink timing synchronization between the terminal device and the network device.
  • the uplink timing synchronization may also be referred to as uplink time synchronization.
  • the timing advance is essentially a negative offset (negative offset) between the start time of the downlink subframe and the start time of the uplink subframe.
  • the timing advance is twice the amount of transmission time, and twice the amount of transmission time is also called round trip time (RTT).
  • RTT round trip time
  • the network device needs to send a TA command to the terminal device.
  • the terminal device may obtain its timing advance through a random access process.
  • the terminal device can send the synchronization code by using zero time advance on the physical random access channel (PRACH) to initiate the random access procedure.
  • the synchronization code may include a cyclic prefix (CP) added in front of the at least one synchronization code sequence.
  • the length of the cyclic prefix and the cyclic shift of the synchronization code sequence may be large enough to enable the base station to recognize different synchronization code sequences sent from different wireless devices.
  • the network device detects the synchronization code, the network device can determine the identity of the synchronization code sequence and the associated timing adjustment information that can be used for uplink synchronization.
  • the timing adjustment information may be transmitted to the terminal device that has sent the identified synchronization code sequence.
  • the terminal device may use the timing adjustment information provided by the network device to transmit the uplink signal received by the network device that is substantially synchronized with other terminal devices.
  • the terminal device In order to ensure the orthogonality of uplink transmission, after receiving downlink data, the terminal device generally waits for several time slots (slots) before performing uplink transmission.
  • the terminal device may be any terminal device in a wireless communication system that has a wireless connection relationship with one or more network devices.
  • Figure 2 it is a schematic flow chart of the random access process in the NR system.
  • the random access process in the NR system may include the following steps:
  • a terminal device sends a random access preamble message (msg1) to a network device, and the network device receives a random access preamble sent by the terminal device.
  • msg1 random access preamble message
  • the network device estimates TA according to the random access preamble, and sends a random access response message (msg2) to the terminal device, where the TA is carried in msg2.
  • the terminal device receives the random access response sent by the network device, and the random access response may also include a random preamble index and an uplink scheduling grant (UL grant).
  • UL grant uplink scheduling grant
  • ⁇ pusch and ⁇ pdcch represent physical uplink shared channel (physical uplink shared channel, PUSCH) and physical downlink control channel (physical downlink control channel, PDCCH) subcarrier spacing configuration parameters, because in the same cell, subcarrier spacing configuration The parameters are generally the same, so The value of is usually 1.
  • the terminal device sends the scheduling transmission message 3 (msg3) according to the time domain position and the frequency domain position indicated in the uplink scheduling authorization.
  • the terminal device After the terminal device receives the downlink control information (DCI) of msg3, it sends the message at the (K2) + ⁇ ) msg3 is sent after the slot.
  • DCI downlink control information
  • the terminal device in order to ensure that the network device can receive the msg3 sent by the terminal device in the (K2+ ⁇ ) slot, the terminal device usually sends the msg3 in the (K2+ ⁇ -TA) slot. But in the ground network system, the value of TA is small and can be ignored, that is, it can be considered that the terminal device sends msg3 in (K2+ ⁇ ) slots, and the network device can receive msg2 in (K2+ ⁇ ) slots. This will not be repeated here.
  • the values of K2 and ⁇ are predefined and exemplary. Tables 1 to 4 show the values of K2 and ⁇ :
  • Table 1 Default PUSCH time domain resource allocation under conventional CP
  • mapping type K2 1 typeA j 2 typeA j 3 typeA j 4 typeB j 5 typeB j 6 typeB j 7 typeB j 8 typeA j+1 9 typeA j+1 10 typeA j+1 11 typeA j+2 12 typeA j+2 13 typeA j+2 14 typeB j 15 typeA j+3 16 typeA j+2
  • Table 2 Default PUSCH time domain resource allocation under extended CP
  • the latest time that the terminal device can support sending msg3 is (j+3+ ⁇ ) slots after receiving DCI, and (j+3+ ⁇ ) after receiving DCI
  • a slot is the uplink transmission time.
  • SCS 2 ⁇ pusch ⁇ 15kHZ. This means that the latest time that the terminal device can support sending msg3 is 6 slots after receiving the DCI of msg3.
  • the network device If the network device receives msg3 correctly, it sends a message 4 (msg4) to the terminal device to resolve the conflict.
  • the conflict means that multiple terminal devices use the same uplink resource to initiate a random access process, and the network device thinks that there is only one terminal. The device initiates random access.
  • the network device sends a contention resolution message (msg4) to the terminal device.
  • DCI downlink control information
  • the maximum value of k is 8, that is, the latest time for the terminal device to send an ACK is 8 slots after receiving msg4.
  • DCI refers to signaling transmitted on the PDCCH. DCI can be divided into multiple formats, and each format can carry different control signaling.
  • the RTT is long, which will cause the terminal equipment to be unable to complete the timing advance processing within the duration of 6 or 8 slots.
  • the RTT can reach 544.751 ms, and the 6 or 8 slots described above are far from covering the RTT duration.
  • timing advance covers only part of the RTT, which will be described in detail below with reference to FIGS. 3 and 4.
  • FIGS. 3 and 4 it is a schematic diagram of the distance from the terminal equipment to the satellite in the satellite system.
  • the distance from the terminal device to the satellite is divided into two parts, the common distance and the remaining difference distance.
  • d 1 represents the common distance, which represents the shortest distance between the cell where the terminal device is located and the satellite.
  • the purpose of timing advance is to ensure that the signals sent by different terminal equipment can reach the network equipment at the same time.
  • Table 5 The cell radius supported by the satellite at different orbit heights
  • Table 6 shows the values of d3 corresponding to different ⁇ when the maximum radius supported by GEO satellites is 500km.
  • Table 7 shows the typical values supported by GEO satellites. When the cell radius is 250km, the value of d3 corresponding to different ⁇ .
  • the designed transmission time that is, the uplink transmission time described above, is designed for a cell radius R 1 of 300 km.
  • the design needs to be redesigned.
  • d 3 the difference with the existing cell radius
  • the time delay produced by d 4 is 684/c, which is approximately equal to 2.28ms, where c represents the speed of light. Since the timing advance of the terminal equipment is to cover the round-trip delay, it is twice the difference.
  • the embodiments of the present application provide a communication method that flexibly compensates and adjusts the uplink transmission time to ensure that the terminal device completes timing advance and other signal processing operations.
  • the following will focus on the communication method provided by the embodiments of the present application Specific introduction.
  • Fig. 5 is a schematic diagram of an embodiment of a communication method in an embodiment of this application.
  • an embodiment of the communication method in the embodiment of the present application may include:
  • the terminal device acquires a first message, where the first message carries target adjustment information.
  • the terminal device acquiring the first message may include the terminal device receiving the first message sent by other devices, for example, the terminal device receiving the first message sent by the network device, or the terminal device acquiring the first message may also include the terminal device acquiring its own first message, Or, it may also include that the terminal device obtains the first message through a search channel, and this embodiment of the present application does not limit the specific manner in which the terminal device obtains the first message.
  • the first message carries target adjustment information, and the target adjustment information is used by the terminal device to adjust the uplink transmission time.
  • the terminal device acquires a second message, where the second message carries a timing advance TA.
  • the network device estimates the TA according to the random access preamble, and sends msg2 to the terminal device, and the msg2 carries the TA.
  • the terminal device may also obtain the TA in other ways.
  • the embodiment of the present application does not limit the manner in which the terminal device obtains the TA.
  • the network device may determine the TA value of each terminal device based on measuring the uplink transmission of the corresponding terminal device. Therefore, as long as the terminal device has uplink transmission, the network device can be used to estimate the TA value and send it to the terminal device through a downlink message.
  • the first message and the second message may be the same message, that is, one message may carry the target adjustment information and the TA, which is not specifically limited in the embodiment of the present application.
  • the terminal device adjusts the uplink transmission time according to the target adjustment information and TA.
  • T1 is the (K2+ ⁇ -TA) slots after the terminal device receives the DCI of msg3, where K2 and ⁇ can be understood with reference to K2 and ⁇ described in the flowchart corresponding to Figure 2. I will not repeat it here.
  • time T2 is (K2+ ⁇ -TA+t) slots after the terminal device receives the DCI of msg3.
  • the terminal device can flexibly adjust the uplink transmission time according to the target adjustment information, ensuring that the terminal device completes operations such as time advancement and signal processing, and ensuring uplink orthogonality.
  • the terminal device needs to adjust the uplink transmission time according to the target adjustment information and TA.
  • the terminal device can obtain the target adjustment information in different ways. The method of obtaining the target adjustment information for the terminal device will be described below. And adjust the uplink transmission time according to the target adjustment information for detailed introduction.
  • Fig. 6 is a schematic diagram of an embodiment of a communication method in an embodiment of the application.
  • an embodiment of the communication method in the embodiment of the present application may include:
  • the terminal device receives a system information block (system information block, SIB) 1 message sent by the network device.
  • SIB system information block
  • SIB1 provides initial access information for terminal equipment
  • SIB2 provides cell reselection messages.
  • SIB1 which broadcasts periodically at intervals of 160ms
  • the transmission of other SIBs can be transmitted in two ways: one is to perform periodic transmission at a fixed time interval. Second, after the terminal device is connected to the network, it is sent based on the request of the terminal device to reduce signaling overhead. In the process of random access, the terminal device sends msg3 to perform ordinary uplink scheduling, which means that the terminal device needs to know the adjusted uplink transmission time during random access.
  • uplink transmission time uplink data transmission time
  • uplink signal transmission time uplink signal transmission time
  • uplink transmission time are often used interchangeably, but those skilled in the art can understand their meaning. Therefore, in the embodiments of the present application, when the differences are not emphasized, the meanings to be expressed are consistent. Therefore, in order to ensure that the adjusted uplink transmission time can be known before the terminal device randomly accesses, in the embodiment of the present application, the SIB1 message carries the uplink transmission time adjustment information. The following is a detailed description of how to add adjustment information in SIB1.
  • GEO satellite As an example for description. It should be noted that those skilled in the art can obviously obtain other satellites according to the embodiments disclosed in this application, such as LEO, MEO, etc. add adjustment information to SIB1.
  • the embodiments of this application are not specifically pointed out, they are all described using GEO satellites as examples, but for other satellites such as LEO, MEO and other satellites, the methods provided in the embodiments of this application are still applicable, and those skilled in the art can follow
  • the method disclosed in the embodiment provided in the present application clearly obtains the method for adjusting the uplink transmission time of other satellite systems, which will not be repeated in the following embodiments.
  • the maximum additional time required is about 4.55ms. If the subcarrier spacing is 15kHz, the number of slots ⁇ to be added can be 5. As a set of examples, Table 8 shows the values of ⁇ under different SCS.
  • SIB1 includes multiple information elements (information elements, IEs), for example, it may include information elements describing cell access related information (cell access related information), or information elements describing cell identity (cell identity).
  • IEs information elements
  • cell access related information information elements describing cell access related information
  • cell identity information elements describing cell identity
  • a new field can be added to SIB1, which can occupy 3 bits, and its specific range is integer (0, 5), and the remaining two values are reserved, that is, reserved.
  • the terminal device adjusts the uplink transmission time according to the received SIB1.
  • the terminal device After receiving the SIB1, the terminal device adjusts the existing uplink transmission time according to the ⁇ value carried in the SIB1.
  • the terminal device adjusts the uplink transmission time according to the corresponding relationship between ⁇ and the first subcarrier interval.
  • the first sub-carrier interval is the sub-carrier interval adopted by the terminal equipment, and the corresponding relationship may be pre-stored in the terminal equipment and the satellite.
  • the terminal equipment and the satellite have pre-stored the correspondence between the sub-carrier spacing and ⁇ .
  • the terminal equipment knows the sub-carrier spacing it uses.
  • the terminal device receives a certain ⁇ , it can be based on the pre-stored sub-carrier spacing and ⁇ Correspondence, adjust the uplink transmission time.
  • the terminal device adjusting the uplink transmission time according to ⁇ may include: ⁇ is the adjustment time of the uplink transmission time corresponding to the second subcarrier interval.
  • the terminal device determines the first time according to the preset relationship between the third subcarrier interval and the second subcarrier interval, and the first time is the uplink transmission corresponding to the third subcarrier interval Time adjustment time.
  • the satellite lays down several beams to serve several cells, and the satellite uses broadcast to convey the ⁇ value.
  • the ⁇ value is conveyed through the SIB1 message.
  • the terminal device receives the SIB1 message, it can be obtained ⁇ value, and adjust the uplink transmission time according to the ⁇ value.
  • Fig. 7 is a schematic diagram of an embodiment of a communication method in an embodiment of the application.
  • an embodiment of the communication method in the embodiment of the present application may include:
  • a terminal device receives a downlink control information (downlink control information, DCI) message sent by a network device.
  • DCI downlink control information
  • the network device sends a DCI message to the terminal device for data transmission between the network device and the terminal device.
  • the network device sends DCI to the terminal device through the PDCCH, and the DCI message may include scheduling information of the data channel, and based on the scheduling information, the network device and the terminal device perform data transmission through the data channel.
  • an instruction to adjust the uplink transmission time can be carried in the DCI message.
  • 3 bits of information can be added to the DCI to perform an uplink transmission time adjustment instruction.
  • Table 9 shows a In the NR system, 3 bits are added for DCI1_0 for uplink transmission time adjustment indication.
  • the instruction to adjust the uplink transmission time may also be referred to as adjustment information, and the embodiment of the present application does not limit the name of the adjustment information.
  • the embodiment corresponding to FIG. 7 and the embodiment corresponding to FIG. 6 can be applied in combination.
  • the uplink transmission whose common distance needs to be adjusted can be indicated by the SIB1 message in the embodiment corresponding to FIG. 6.
  • the remaining The uplink transmission whose difference distance needs to be adjusted can be indicated by the DCI message in the embodiment corresponding to FIG. 7. For example, suppose that the first terminal device and the second terminal are in the same cell, and the angle ⁇ 1 corresponding to the first terminal device is greater than the angle ⁇ 2 corresponding to the second terminal device.
  • the second terminal device If the first terminal device requires a total of uplink transmission time Adjusting 562ms, the second terminal device's uplink transmission time needs to be adjusted 563ms in total, you can use the SIB1 message to instruct the first terminal device and the second terminal device to adjust the uplink transmission time by 560ms, and then use the first DCI message to instruct the first terminal device to uplink The transmission time is adjusted by 2ms, and the second terminal is instructed to adjust the uplink transmission time by 3ms through the second DCI message.
  • Table 10 A mapping relationship between bit information in DCI1_0 and ⁇
  • a non-continuous mapping manner can be used.
  • Table 11 shows the mapping relationship between the bit information in DCI1_0 and ⁇ when only 2 bits of information can be added.
  • Table 12 shows the mapping relationship between the bit information in DCI1_0 and ⁇ when only 1 bit of information can be added.
  • Table 11 Another mapping relationship between bit information in DCI1_0 and ⁇
  • Table 12 Another mapping relationship between bit information in DCI1_0 and ⁇
  • the terminal device adjusts the uplink transmission time according to the received DCI message.
  • the terminal device After receiving the DCI, the terminal device adjusts the existing uplink transmission time according to the ⁇ value carried in the DCI.
  • the terminal device adjusts the uplink transmission time according to the corresponding relationship between ⁇ and the first subcarrier interval.
  • the first sub-carrier interval is the sub-carrier interval adopted by the terminal equipment, and the corresponding relationship may be pre-stored in the terminal equipment and the satellite.
  • the terminal equipment and the satellite have pre-stored the correspondence between the sub-carrier spacing and ⁇ .
  • the terminal equipment knows the sub-carrier spacing it uses.
  • the terminal device receives a certain ⁇ , it can be based on the pre-stored sub-carrier spacing and ⁇ Correspondence, adjust the uplink transmission time.
  • the terminal device adjusts the uplink transmission time according to ⁇ , which may include: ⁇ is the adjustment time of the uplink transmission time corresponding to the second subcarrier interval.
  • ⁇ is the adjustment time of the uplink transmission time corresponding to the second subcarrier interval.
  • the terminal device determines the first time according to the preset relationship between the third subcarrier interval and the second subcarrier interval, and the first time is the uplink transmission corresponding to the third subcarrier interval Time adjustment time.
  • the terminal device adjusts the uplink transmission time according to the first time.
  • the terminal device should add one more slot to the existing uplink transmission time, or if the terminal device determines that its own If ⁇ pusch is 1, the terminal device calculates 2 according to 2 ⁇ pusch ⁇ , that is, the terminal device should add 2 more slots on the basis of the existing uplink transmission time.
  • FIG. 8 is a schematic diagram of an embodiment of a communication method in an embodiment of this application.
  • an embodiment of the communication method in the embodiment of the present application may include:
  • the network device calculates a random access-radio network temporary identifier (RA-RNTI) according to the time-frequency position of msg1, and scrambles a cyclic redundancy check (cyclic redundancy check, CRC).
  • RA-RNTI random access-radio network temporary identifier
  • CRC cyclic redundancy check
  • the network device sends control information to the terminal device through the control channel to support the communication between the network device and the terminal device.
  • the network device sends a control channel to the terminal device.
  • the control channel is a PDCCH.
  • the CRC of the information carried by the control channel is scrambled with a corresponding radio network temporary identifier (RNTI) for error detection of the transmission of the control channel.
  • RNTI radio network temporary identifier
  • the terminal device receives the control channel, decodes the control channel according to the above-mentioned corresponding RNTI, and obtains scheduling information of the data channel, so that the terminal device can communicate with the network device through the data channel according to the scheduling information.
  • the terminal device is in different states and can use different RNTI descrambling.
  • the terminal device uses RA-RNTI to descramble and obtain the uplink resource allocation message.
  • the network device calculates the RA-RNTI according to the time-frequency position of the received msg1, and scrambles the CRC.
  • the RA-RNTI at the calculation place can be determined to a certain extent. Offset means using RA-RNTI+ ⁇ for scrambling, where the value of ⁇ can be ⁇ 0,1,2,3,4,5 ⁇ .
  • the CRC can be regarded as a kind of adjustment information.
  • the network device sends an msg2 message to the terminal device, and the msg2 message includes the CRC.
  • the terminal device uses RA-RNTI+ ⁇ to perform a descrambling operation on the CRC according to the received msg2 message.
  • the terminal device adjusts the uplink transmission time according to ⁇ .
  • the terminal device adjusts the uplink transmission time according to the corresponding relationship between ⁇ and the first subcarrier interval.
  • the first sub-carrier interval is the sub-carrier interval adopted by the terminal equipment, and the corresponding relationship may be pre-stored in the terminal equipment and the satellite.
  • the terminal equipment and the satellite have pre-stored the correspondence between the sub-carrier spacing and ⁇ .
  • the terminal equipment knows the sub-carrier spacing it uses.
  • the terminal device receives a certain ⁇ , it can be based on the pre-stored sub-carrier spacing and ⁇ Correspondence, adjust the uplink transmission time.
  • the terminal device adjusts the uplink transmission time according to ⁇ , which may include: ⁇ is the adjustment time of the uplink transmission time corresponding to the second subcarrier interval.
  • ⁇ is the adjustment time of the uplink transmission time corresponding to the second subcarrier interval.
  • the terminal device determines the first time according to the preset relationship between the third subcarrier interval and the second subcarrier interval, and the first time is the uplink transmission corresponding to the third subcarrier interval Time adjustment time.
  • the embodiment corresponding to FIG. 8 can be applied in combination with the embodiment corresponding to FIG. 7 and the embodiment corresponding to FIG. 6.
  • the uplink transmission whose common distance needs to be adjusted can be indicated by the SIB1 message in the embodiment corresponding to FIG. 6.
  • the remaining The uplink transmission whose difference distance needs to be adjusted can be indicated by the DCI message in the embodiment corresponding to FIG. 7 and the msg2 in the embodiment corresponding to FIG. 8.
  • the first terminal device and the second terminal are in the same cell, and the angle ⁇ 1 corresponding to the first terminal device is greater than the angle ⁇ 2 corresponding to the second terminal device.
  • the first terminal device requires a total of uplink transmission time Adjusting 562.5ms
  • the second terminal device's uplink transmission time needs to be adjusted a total of 563.3ms
  • the first terminal device and the second terminal device can be instructed to adjust the uplink transmission time by 560ms through the SIB1 message.
  • the first DCI message is used to instruct the first terminal device to adjust the uplink transmission time by 2 ms
  • the second DCI message is used to instruct the second terminal to adjust the uplink transmission time by 3 ms.
  • the timing advance can also be divided into two parts, that is, the common timing advance and the remaining difference part.
  • the common timing advance is the same for different terminal devices in the cell, a broadcast method is adopted and carried by the SIB1 and sent to the terminal.
  • the remaining difference part is carried by the DCI message or msg2. Therefore, when the terminal device receives the DCI message or decodes msg2, it obtains the remaining difference part, and then applies it according to the obtained ⁇ value after subsequent uplink transmission .
  • Fig. 9 is a schematic diagram of an embodiment of a communication method in an embodiment of the application.
  • an embodiment of the communication method in the embodiment of the present application may include:
  • the network device binds a physical cell identity (physical cell identity, PCI) with an included angle ⁇ in advance.
  • PCI physical cell identity
  • PCI as a physical cell identifier, provides the function of identifying the cell, so that the terminal device can distinguish the wireless signals of different cells.
  • the PCI values are different to distinguish the cells.
  • the PCI value and the included angle ⁇ can be bound in advance.
  • the terminal device obtains the PCI, it can calculate ⁇ , and then calculate the additional delay time required for uplink transmission, and finally obtain ⁇ value.
  • the terminal device obtains ⁇ according to the acquired PCI, and obtains the value of ⁇ according to ⁇ .
  • the terminal device can determine the PCI of the cell according to the synchronization channel. When the terminal device obtains the PCI, it can obtain the angle ⁇ bound to the PCI. After calculating the value of ⁇ according to the angle ⁇ , the specific calculation formula can be Refer to the formula given in the scenario described in Figure 3 and Figure 4 for understanding. The description will not be repeated here.
  • ⁇ can be considered as the horizontal clamp between the terminal device farthest from the satellite in the cell and the satellite. angle.
  • the embodiment of the present application does not limit the manner in which the terminal device obtains PCI.
  • the terminal device may also use the detected primary synchronization signal (PSS) and secondary synchronization signal (SSS). Sequence combination to obtain PCI.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • the terminal device adjusts the uplink transmission time according to the value of ⁇ .
  • the terminal device After obtaining the ⁇ , the terminal device increases the existing uplink transmission time according to the value of ⁇ , and determines the specific time for uplink data transmission. For example, if the obtained ⁇ is 5 and the terminal device determines that its own ⁇ pusch is 0, the terminal device should add 5 more slots to the existing uplink transmission time, or if the terminal device determines that its own ⁇ pusch is 1.
  • the terminal device calculates 10 according to 2 ⁇ pusch ⁇ , that is, the terminal device should add 10 slots to the existing uplink transmission time.
  • FIG. 10 is a schematic diagram of an embodiment of a communication method in an embodiment of this application.
  • an embodiment of the communication method in the embodiment of the present application may include:
  • the network device broadcasts its own location information.
  • Ephemeris refers to the precise position or trajectory table of satellites that changes over time in the global positioning system (Global Positioning System) measurement.
  • the network device may be a satellite.
  • the satellite broadcasts its own location information, for example, it can be represented by coordinates (X, Y, Z).
  • the network device sends its own location information to the terminal device.
  • the terminal device calculates the ⁇ value according to the position of the satellite and its own position.
  • the terminal device can learn its own location information, for example, it can be represented by coordinates (x, y, z). According to the coordinate information of the satellite and the terminal device, the terminal device can know the distance and inclination between the satellite and the terminal device, set the cell radius, and calculate the value of d1, d2 according to the preset formula, and then calculate the value of d3 , And finally calculate the ⁇ value.
  • the specific calculation formula can be understood by referring to the formula given in the scenario described in FIG. 3 and FIG. 4, and the details are not repeated here.
  • the terminal device adjusts the uplink transmission time according to the value of ⁇ .
  • the terminal device After obtaining the ⁇ , the terminal device increases the existing uplink transmission time according to the value of ⁇ , and determines the specific time for uplink data transmission. For example, if the obtained ⁇ is 5 and the terminal device determines that its own ⁇ pusch is 0, the terminal device should add 5 more slots to the existing uplink transmission time, or if the terminal device determines that its own ⁇ pusch is 1.
  • the terminal device calculates 10 according to 2 ⁇ pusch ⁇ , that is, the terminal device should add 10 slots to the existing uplink transmission time.
  • different terminal devices can also uniformly add m additional slots on the basis of the original uplink transmission time.
  • the m slots are the additional uplink transmission required by the terminal device furthest from the satellite in the cell. time.
  • the terminal device adjusts the first uplink transmission time to the second uplink transmission time according to the first relationship, the first relationship is pre-stored in the terminal device, and the first relationship is the first satellite and the first uplink transmission time. Correspondence of time adjustment time.
  • the terminal device may further include: after receiving msg3, the terminal device waits for a preset time to turn on the first timer, which is used for monitoring msg4. Specifically, after sending the msg3, the terminal device starts the first timer to monitor the msg4, so as to solve the contention conflict problem in random access.
  • the first timer as ra-ContentionResolutionTimer as an example, the timer can support up to 64 subframes. For GEO satellites, it is far from covering the RTT of more than 500 milliseconds.
  • the time when the first timer is turned on is offset according to a preset value. For example, for GEO satellites, after sending msg3, you can wait 544ms, and then turn on the ra-ContentionResolutionTimer timer to monitor msg4. It should be noted that the range of the first timer can also be adjusted directly. For example, for satellite systems, the maximum supported timing length of the first timer can be adjusted according to actual needs. For example, the maximum supported timing length can be modified to 500 Sub-frame.
  • the foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between network devices and terminal devices.
  • the above-mentioned network equipment and terminal equipment include hardware structures and/or software modules corresponding to the respective functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the terminal equipment and network equipment in Figures 5 to 10 can be implemented by one physical device, or can be implemented by multiple physical devices, or a logical function module in one physical device. The embodiment does not specifically limit this.
  • FIG. 11 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application. It includes: a communication interface 1101 and a processor 1102, and may also include a memory 1103.
  • the communication interface 1101 can use any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the processor 1102 includes but is not limited to a central processing unit (CPU), a network processor (NP), an application-specific integrated circuit (ASIC), or a programmable logic device (programmable logic device, PLD) one or more.
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • the processor 1102 is responsible for the communication line 1104 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 1103 may be used to store data used by the processor 1102 when performing operations.
  • the memory 1103 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (electrically programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, Optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can Any other medium accessed by the computer, but not limited to this.
  • the memory may exist independently, and is connected to the processor 1102 through a communication line 1104.
  • the memory 1103 may also be integrated with the processor 1102. If the memory 1103 and the processor 1102 are independent devices, the memory 1103 and the processor 1102 are connected, for example, the memory 1103 and the processor 1102 may communicate through a communication line.
  • the network interface 1101 and the processor 1102 may communicate through a communication line, and the network interface 1101 may also be directly connected to the processor 1102.
  • the communication line 1104 may include any number of interconnected buses and bridges.
  • the communication line 1104 links various circuits including one or more processors 1102 represented by the processor 1102 and a memory represented by the memory 1103 together.
  • the communication line 1104 may also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, this application will not further describe them.
  • the terminal device may include a memory for storing computer-readable instructions.
  • It may also include a communication interface coupled with the memory to perform the following operations:
  • the second message carries the time advance TA.
  • It may also include: a processor coupled with the communication interface, configured to execute computer-readable instructions in the memory to perform the following operations:
  • the memory is also used to store the corresponding relationship between the target adjustment information and the first subcarrier interval.
  • the processor is specifically configured to adjust the uplink transmission time according to the corresponding relationship between the target adjustment information stored in the memory and the first subcarrier interval and the TA obtained by the communication interface.
  • the first subcarrier interval is the subcarrier interval used by the terminal device, and the corresponding relationship is Pre-stored in the terminal device.
  • the target adjustment information is the adjustment time of the uplink transmission time corresponding to the second subcarrier interval
  • the processor is specifically used for the terminal device when the subcarrier interval is the third subcarrier interval, according to the third subcarrier interval.
  • the preset relationship between the carrier interval and the second subcarrier interval determines the first time, and the first time is the adjustment time of the uplink transmission time corresponding to the third subcarrier interval;
  • the processor is specifically configured to adjust the uplink transmission time according to the first time and TA.
  • the communication interface is specifically used for the device to receive the system information block SIB1 message, and the SIB1 message carries target adjustment information.
  • the communication interface is specifically used to receive a downlink control information DCI message, and the DCI message carries target adjustment information.
  • the communication interface is specifically used to receive the random access response message msg2.
  • the msg2 message includes a cyclic redundancy check CRC.
  • the CRC is performed by using the random access wireless network temporary identification RA-RNTI and target adjustment information. Scrambled.
  • the processor is also used to perform descrambling operations on the CRC to obtain target adjustment information.
  • the communication interface is specifically used to receive the system information block SIB1 message, and the SIB1 message carries the first target adjustment information.
  • the communication interface is specifically used to receive the downlink control information DCI message, and the DCI message carries the second target adjustment information.
  • the processor is specifically configured to adjust the uplink transmission time according to the first target adjustment information, the second target adjustment information and the TA.
  • the communication interface is specifically used to obtain the physical cell identity PCI, which is bound to an angle ⁇ , and the angle ⁇ is the horizontal angle between the cell and the satellite.
  • the processor is further configured to calculate the target adjustment information according to the acquired included angle ⁇ according to a preset formula.
  • the communication interface is specifically used to receive a broadcast message sent by a satellite, and the broadcast message carries position information of the satellite.
  • the processor is also used to calculate target adjustment information according to its own location information and satellite location information according to a preset formula.
  • the processor is further configured to wait for a preset time to start a first timer after the communication interface receives the message msg3 for the first scheduled transmission.
  • the first timer is used to monitor the contention resolution message msg4.
  • the memory and the processor may be integrated together.
  • the communication interface can be regarded as the transceiver unit of the terminal device
  • the processor with processing function can be regarded as the processing unit of the terminal device
  • the memory can be regarded as the storage unit of the terminal device.
  • the terminal device includes a transceiver unit 1210 and a processing unit 1220.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1210 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1210 as the sending unit, that is, the transceiver unit 1210 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • the transceiving unit 1210 is used to perform the acquisition operations on the terminal device side in steps 501 and 502 in FIG. 5, and/or the transceiving unit 1210 is also used to perform other operations on the terminal device side in the embodiment of the present application.
  • the processing unit 1220 is configured to execute step 503 in FIG. 2, and/or the processing unit 1220 is further configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the transceiver unit 1210 is used to perform the receiving operation on the terminal device side in step 601 in FIG. 6, and/or the transceiver unit 1210 is also used to perform other transceiver steps on the terminal device side in the embodiment of the present application.
  • the processing unit 1220 is configured to execute step 602 in FIG. 6, and/or the processing unit 1220 is further configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the transceiver unit 1210 is used to perform the receiving operation on the terminal device side in step 801 in FIG. 7, and/or the transceiver unit 1210 is also used to perform other transceiver steps on the terminal device side in the embodiment of the present application .
  • the processing unit 1220 is configured to execute step 702 in FIG. 7, and/or the processing unit 1220 is further configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the transceiver unit 1210 is used to perform the receiving operation on the terminal device side in step 701 in FIG. 8, and/or the transceiver unit 1210 is also used to perform other transceiver steps on the terminal device side in the embodiment of the present application.
  • the processing unit 1220 is configured to execute steps 803 and 804 in FIG. 8, and/or the processing unit 1220 is also configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the transceiving unit 1210 is used to perform the obtaining operation on the terminal device side in step 901 in FIG. 9, and/or the transceiving unit 1210 is also used to perform other transceiving steps on the terminal device side in the embodiment of the present application.
  • the processing unit 1220 is configured to execute step 903 in FIG. 8, and/or the processing unit 1220 is further configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the transceiver unit 1210 is used to perform the receiving operation on the terminal device side in step 1002 in FIG. 10, and/or the transceiver unit 1210 is also used to perform other transceiver steps on the terminal device side in the embodiment of the present application.
  • the processing unit 1220 is configured to execute steps 1003 and 1004 in FIG. 10, and/or the processing unit 1220 is also configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • FIG. 13 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application. It includes: a communication interface 1301 and a processor 1302, and may also include a memory 1303.
  • the communication interface 1301 may use any device such as a transceiver to communicate with other devices or communication networks.
  • the processor 1302 includes but is not limited to a central processing unit (CPU), a network processor (NP), an application-specific integrated circuit (ASIC) or a programmable logic device (programmable logic device, PLD) one or more.
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • the processor 1302 is responsible for the communication line 1304 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 1303 may be used to store data used by the processor 1302 when performing operations.
  • the memory 1303 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (electrically programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, Optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can Any other medium accessed by the computer, but not limited to this.
  • the memory may exist independently and is connected to the processor 1302 through a communication line 1304.
  • the memory 1303 may also be integrated with the processor 1302. If the memory 1303 and the processor 1302 are independent devices, the memory 1303 and the processor 1302 are connected, for example, the memory 1303 and the processor 1302 can communicate through a communication line.
  • the network interface 1301 and the processor 1302 may communicate through a communication line, and the network interface 1301 may also be directly connected to the processor 1302.
  • the communication line 1304 may include any number of interconnected buses and bridges, and the communication line 1304 links various circuits including one or more processors 1302 represented by the processor 1302 and a memory represented by the memory 1303 together.
  • the communication line 1304 can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, this application will not further describe them.
  • the network device may include:
  • the memory is used to store computer-readable instructions.
  • the communication interface coupled with the memory, the communication interface is used to perform the following operations:
  • the first message is sent, and the first message carries target adjustment information.
  • the second message is sent, and the second message carries the time advance TA, the target adjustment information and the TA are used for the terminal device to adjust the uplink transmission time.
  • the memory is specifically used to store the corresponding relationship between the target adjustment information and the subcarrier spacing, and the corresponding relationship is also stored in the terminal device.
  • the target adjustment information is adjustment information of the uplink transmission time corresponding to the target subcarrier interval.
  • the communication interface is specifically used to send a system information block SIB1 message, and the SIB1 message carries target adjustment information.
  • the communication interface is specifically used to send a downlink control information DCI message, and the DCI message carries target adjustment information.
  • the processor is specifically configured to calculate RA-RNTI according to the time-frequency position of msg1, and use RA-RNTI+ ⁇ to scramble the CRC.
  • the communication interface is specifically used to send a random access response message msg2.
  • the msg2 message includes a cyclic redundancy check CRC.
  • the CRC uses the random access wireless network temporary identifier RA-RNTI and target adjustment information for scrambling.
  • the network device includes a first network device and a second network device, where the first network device includes a first communication interface, and the second network device includes a second communication interface, wherein the first communication interface specifically Used to send the system information block SIB1 message, the SIB1 message carries the first target adjustment information.
  • the second communication interface is specifically used to send a downlink control information DCI message, and the DCI message carries the second target adjustment information.
  • the processor is specifically used to bind PCI and ⁇ .
  • the communication interface can be regarded as the transceiver unit of the network device
  • the processor with processing function can be regarded as the processing unit of the network device
  • the memory can be regarded as the storage unit of the network device.
  • the network device may include a transceiving unit 1410 and a processing unit 1420.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1410 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1410 as the sending unit, that is, the transceiver unit 1410 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • the transceiving unit 1410 is used to perform the transceiving operations on the network device side in steps 501 and 502 in FIG. 5, and/or the transceiving unit 1410 is also used to perform other operations on the network device side in the embodiment of the present application. Send and receive steps. Processing unit 1420.
  • the transceiver unit 1410 may be used to perform the transceiver operations on the network device side in steps 501 and 502 in FIG. 5, or the transceiver operations on the network device side in step 601 in FIG. 6, or The transceiving operation on the network device side in step 701, and/or the transceiving unit 1410 is further configured to perform other transceiving steps on the network device side in the embodiment corresponding to FIG. 5 or FIG. 6 or FIG. 7.
  • the transceiving unit 1410 can be used to perform the transceiving operations on the network device side in step 802 in FIG. 8, and/or the transceiving unit 1410 is also used to perform other transceiving operations on the network device side in the embodiment of the present application. step.
  • the processing unit 1420 is configured to execute step 801 in FIG. 8, and/or the processing unit 1420 is further configured to execute other processing steps on the network device side in the embodiment of the present application.
  • processing unit 1420 is configured to perform step 901 in FIG. 9, and/or the processing unit 1420 is further configured to perform other processing steps on the network device side in the embodiment of the present application.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • wired such as coaxial cable, optical fiber, digital subscriber line (DSL)
  • wireless such as infrared, wireless, microwave, etc.
  • the computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the program can be stored in a computer-readable storage medium, and the storage medium can include: ROM, RAM, magnetic disk or CD, etc.

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Abstract

本申请公开了一种通信方法，包括：终端设备获取第一消息，第一消息携带目标调整信息。终端设备获取第二消息，第二消息携带时间提前量TA。终端设备根据目标调整信息和TA，调整上行发送时间。本申请实施例还提供相应的终端设备、网络设备以及存储介质。本申请实施例可以根据目标调整信息对上行发送时间灵活的进行调整，保证终端设备完成时间提前和信号处理等操作，保证上行的正交性。

Description

一种通信方法、终端、网络设备及存储介质
本申请要求于2019年4月23日提交中国专利局，申请号为201910329275.2、发明名称为“一种通信方法、终端、网络设备及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及车辆的制动设备领域，尤其涉及一种通信方法、终端、网络设备及存储介质。
背景技术
在无线通信系统中，为了保证上行传输的正交性，避免小区内干扰，要求来自不同的终端设备的上行信号到达网络设备的时间基本上是对齐的。因此，网络设备会向终端设备发送时间提前量(time advance，TA)，终端设备根据该接收的TA调整发送上行信号的时间，从而实现终端设备和网络设备之间的上行定时同步。通常时间提前量是两倍的传输时间量，两倍的传输时间量也被称为往返时间(round trip time，RTT)。为了保证上行传输的正交性，终端设备在收到下行数据之后，一般等待若干个时隙(slot)才进行上行传输。
对于卫星通信系统，RTT较长，会导致在现有的上行发送时间的时长内，终端设备无法完成时间提前处理。因此在卫星通信系统中，如何使终端设备能够完成时间提前处理，亟待解决。
发明内容
本申请实施例提供一种通信方法、终端、网络设备及存储介质，使得终端设备可以根据目标调整信息和TA对上行发送时间灵活的进行调整，保证终端设备完成时间提前和信号处理等操作，保证上行的正交性。
为解决上述技术问题，本申请实施例提供以下技术方案：
本申请第一方面提供一种通信方法，该通信方法可以应用于各种通信系统，例如：长期演进(long termevolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、第五代(5th generation，5G)移动通信系统或新无线(new radio，NR)通信系统以及未来的移动通信系统等。可以包括：终端设备获取第一消息，第一消息携带目标调整信息。终端设备可以接收其他设备发送的第一消息，比如终端设备接收网络设备发送的第一消息，或者终端设备获取第一消息还可以包括终端设备获取自身的第一消息，或者还可以包括终端设备通过搜索信道获取第一消息，本申请实施例并不对终端设备获取第一消息的具体方式进行限制。该第一消息携带目标调整信息，该目标调整信息用于终端设备调整上行发送时间。终端设备获取第二消息，第二消息携带时间提前量TA。网络设备根据随机接入前导估计TA，并向终端设备发送msg2，msg2中携带TA。当然，终端设备还可以通过其他方式获取TA，本申请实施例并不对终端设备获取TA的方式进行限制，比如网络设备可以基于测量对应终端设备的上行传输来确定每个终端设备TA值。因此，只要终端设备有上行传输，网络设备就可以用来估计TA值，并通过 下行消息发送给终端设备。终端设备根据目标调整信息和TA，调整上行发送时间。通过第一方面可知，终端设备可以根据目标调整信息对上行发送时间灵活的进行调整，保证终端设备完成时间提前和信号处理等操作，保证上行的正交性。
可选地，结合上述第一方面，在第一种可能的实现方式中，终端设备根据目标调整信息和TA，调整上行发送时间，可以包括：终端设备根据目标调整信息与第一子载波间隔的对应关系以及TA，调整上行发送时间，第一子载波间隔为终端设备采用的子载波间隔，对应关系预先存储在终端设备中，该对应关系还预先存储在网络设备中。
可选地，结合上述第一方面，在第二种可能的实现方式中，目标调整信息为第二子载波间隔对应的上行发送时间的调整时间。终端设备根据目标调整信息和TA，调整上行发送时间，可以包括：终端设备的子载波间隔为第三子载波间隔时，终端设备根据第三子载波间隔和第二子载波间隔的预设关系确定第一时间，第一时间为第三子载波间隔对应的上行发送时间的调整时间。终端设备根据第一时间和TA调整上行发送时间。
可选地，结合上述第一方面或第一方面第一种或第一方面第二种可能的实现方式，在第三种可能的实现方式中，终端设备获取第一消息，第一消息携带目标调整信息，可以包括：终端设备接收系统信息块SIB1消息，NR中定义了若干不同的SIB，它们以所包含的不同类型的信息进行区分，例如，在NR中SIB1提供了终端设备初始接入的信息，SIB2提供了小区重选的消息。在NR中，除了SIB1按照160ms的间隔进行周期广播外，其他SIB的发送可以通过两种方式进行传输：一是以固定的时间间隔进行周期性的传输。二是在终端设备接入网络之后，基于终端设备的请求进行发送，以减少信令开销。在本申请第一方面第三种可能的实现方式中，可以在SIB1消息中携带目标调整信息。
可选地，结合上述第一方面或第一方面第一种或第一方面第二种可能的实现方式，在第四种可能的实现方式中，终端设备获取第一消息，第一消息携带目标调整信息，可以包括：终端设备接收下行控制信息DCI消息，网络设备向终端设备发送DCI消息，用于网络设备和终端设备之间的数据传输。示例性地，网络设备通过PDCCH向终端设备发送DCI，DCI消息中可以包括数据信道的调度信息，基于该调度信息，网络设备和终端设备通过数据信道进行数据传输。在第一方面第四中可能的实现方式中，可以在DCI消息中携带目标调整信息。
可选地，结合上述第一方面或第一方面第一种或第一方面第二种可能的实现方式，在第五种可能的实现方式中，终端设备获取第一消息，第一消息携带目标调整信息，可以包括：终端设备接收随机接入响应消息msg2，msg2消息中可以包括循环冗余校验(cyclic redundancy check，CRC)，CRC采用随机接入无线网络临时标识(random access-radio network temporary identifier，RA-RNTI)和目标调整信息进行加扰。在终端设备根据目标调整信息和TA，调整上行发送时间之前，还可以包括：终端设备对CRC执行解扰操作，获取目标调整信息。比如终端设备收到msg2时，利用RA-RNTI+ξ对CRC执行解扰操作，若解扰成功，则可获取ξ的值。例如，若终端设备利用RA-RNTI+3成功解扰出信息，则认为ξ＝3。示例性的，本申请实施例中该ξ值对应于SCS＝15kHz的情况，对于其他子载波间隔，可以根据2 μpuschξ计算获得。
可选地，结合上述第一方面或第一方面第一种或第一方面第二种可能的实现方式，在第六种可能的实现方式中，终端设备获取第一消息，第一消息携带目标调整信息，可以包括：终端设备接收系统信息块SIB1消息，SIB1消息中携带第一目标调整信息。终端设备接收下行控制信息DCI消息，DCI消息中携带第二目标调整信息。终端设备根据目标调整信息和TA，调整上行发送时间，可以包括：终端设备根据第一目标调整信息和第二目标调整信息以及TA，调整上行发送时间。
可选地，结合上述第一方面或第一方面第一种或第一方面第二种可能的实现方式，在第七种可能的实现方式中，终端设备获取第一消息，第一消息携带目标调整信息，可以包括：终端设备接收系统信息块SIB1消息，SIB1消息中携带第一目标调整信息。终端设备接收下行控制信息DCI消息，DCI消息中携带第二目标调整信息。终端设备接收随机接入响应消息msg2，msg2消息中可以包括循环冗余校验(cyclic redundancy check，CRC)，CRC采用随机接入无线网络临时标识(random access-radio network temporary identifier，RA-RNTI)和目标调整信息进行加扰。终端设备对CRC执行解扰操作，获取第三目标调整信息。终端设备根据目标调整信息和TA，调整上行发送时间，可以包括：终端设备根据第一目标调整信息和第二目标调整信息和第三目标调整信息以及TA，调整上行发送时间。
可选地，结合上述第一方面，在第八种可能的实现方式中，终端设备获取第一消息，第一消息携带目标调整信息，终端设备获取物理小区标识(physical cell identity，PCI)，PCI作为物理小区标识，提供了识别小区的功能，使得终端设备可以区分不同小区的无线信号。目前5G NR系统中共有1008个PCI，在一片区域内，使用一组PCI值，以区分不同的小区，而距离该区域较远的区域，上述PCI值会进行相应的复用。对于一个卫星所覆盖的小区，其PCI值各不相同，以进行小区的区分。在第一方面第七种可能的实现方式中，可以包括：将PCI与夹角α绑定，夹角α为小区与卫星之间的水平夹角。在终端设备根据目标调整信息和TA，调整上行发送时间之前，还可以包括：终端设备根据获取到的夹角α按照预设的公式计算得到目标调整信息。
可选地，结合上述第一方面，在第九种可能的实现方式中，终端设备获取第一消息，第一消息携带目标调整信息，星历是指在全球定位系统(global positioning system)测量中，卫星运行随时间而变的精确位置或轨迹表。可以包括：终端设备接收卫星发送的广播消息，广播消息中携带了卫星的位置信息。在终端设备根据目标调整信息和TA，调整上行发送时间之前，还可以包括：终端设备根据自身的位置信息以及卫星的位置信息得出目标调整信息。
可选地，结合上述第一方面或第一方面任意一种可能的实现方式，在第十种可能的实现方式中，该方法还可以包括：终端设备接收第一次调度传输的消息msg3之后，等待预设时间启动第一定时器，第一定时器用于监控竞争解决消息msg4。具体的，终端设备在发送msg3之后，启动第一定时器，以监控msg4，进而解决随机接入中的竞争冲突问题。以第一定时器为ra-ContentionResolutionTimer为例进行说明，该定时器最大可支持64子帧，对于GEO卫星，远远不能覆盖500多毫秒的RTT，若还按照此定时器来监控msg4，则该定 时器超时后，msg4还未到达，会产生随机接入不必要的失败。在第十种可能的实现方式中，将打开第一定时器的时间按照预设的数值进行偏移，例如，对于GEO卫星，发送msg3之后可以等待544ms，再打开ra-ContentionResolutionTimer定时器来监控msg4。需要说明的是，也可以直接调整第一定时器的范围，比如，针对卫星系统，可以按照实际需求调整第一定时器最大可支持的定时长度，比如可以将最大可支持的定时长度修改为500子帧。
本申请第二方面提供一种通信方法，可以包括：网络设备发送第一消息，第一消息中携带目标调整信息。网络设备发送第二消息，第二消息中携带时间提前量TA，目标调整信息和TA用于终端设备调整上行发送时间。
可选地，结合上述第二方面，在第一种可能的实现方式中，网络设备预先存储目标调整信息与子载波间隔的对应关系，该对应关系还存储在终端设备中。
可选地，结合上述第二方面，在第二种可能的实现方式中，目标调整信息为目标子载波间隔对应的上行发送时间的调整信息。
可选地，结合上述第二方面或第二方面第一种或第二方面第二种可能的实现方式，在第三种可能的实现方式中，网络设备发送第一消息，第一消息中携带目标调整信息，可以包括：
网络设备发送系统信息块SIB1消息，SIB1消息中携带目标调整信息。
可选地，结合上述第二方面或第二方面第一种或第二方面第二种可能的实现方式，在第四种可能的实现方式中，网络设备发送第一消息，第一消息中携带目标调整信息，可以包括：网络设备发送下行控制信息DCI消息，DCI消息中携带目标调整信息。
可选地，结合上述第二方面或第二方面第一种或第二方面第二种可能的实现方式，在第五种可能的实现方式中，网络设备发送第一消息，第一消息中携带目标调整信息，可以包括：网络设备发送随机接入响应消息msg2，msg2消息中可以包括循环冗余校验CRC，CRC采用随机接入无线网络临时标识RA-RNTI和目标调整信息进行加扰。
可选地，结合上述第二方面或第二方面第一种或第二方面第二种可能的实现方式，在第六种可能的实现方式中，网络设备发送第一消息，第一消息中携带目标调整信息，可以包括：第一网络设备发送系统信息块SIB1消息，SIB1消息中携带第一目标调整信息。第二网络设备发送下行控制信息DCI消息，DCI消息中携带第二目标调整信息。
本申请第三方面提供一种通信方法，可以包括：终端设备将第一上行发送时间调整为第二上行发送时间，第二上行发送时间在所述第一上行发送时间的基础上增加p个时隙slot，所述p为大于4的整数。
可选地，结合上述第三方面，在第一种可能的实现方式，所述终端设备将第一上行发送时间调整为第二上行发送时间，可以包括：终端设备根据第一关系将第一上行发送时间调整为第二上行发送时间，所述第一关系预先存储在所述终端设备中，所述第一关系为第一卫星与第一上行发送时间的调整时间的对应关系。
本申请第四方面提供一种通信系统，可以包括终端设备和网络设备。其中该终端设备可以为本申请第一方面以及第一方面任意一种可能的实现方式中描述的终端设备，该网络设备可以为本申请第二方面以及第二方面任意一种可能的实现方式中描述的网络设备。
本申请第五方面提供一种通信系统，可以包括终端设备和网络设备。其中终端设备可以为本申请第三方面以及第三方面任意一种可能的实现方式中描述的终端设备，该网络设备可以为本申请第二方面以及第二方面任意一种可能的实现方式中描述的网络设备。
本申请第六方面提供一种终端设备，该终端设备具有实现上述第一方面或第一方面任意一种可能实现方式的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
本申请第七方面提供一种终端设备，该终端设备具有实现上述第三方面或第三方面任意一种可能实现方式的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
本申请第八方面提供一种网络设备，该网络设备具有实现上述第二方面或第二方面任意一种可能实现方式的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
本申请第九方面提供一种终端设备，包括：存储单元，用于存储计算机可读指令。收发单元，用于获取第一消息，第一消息消息携带目标调整信息。收发单元，还用于获取第二消息，第二消息携带时间提前量TA。处理单元，用于根据存储单元存储的计算机可读执行，以及收发单元获取的目标调整信息和TA，调整上行发送时间。
可选地，结合上述第九方面，在第一种可能的实现方式，存储单元，还用于存储目标调整信息与第一子载波间隔的对应关系。处理单元，具体用于根据存储单元存储的目标调整信息与第一子载波间隔的对应关系以及收发单元获取的TA，调整上行发送时间，第一子载波间隔为终端设备采用的子载波间隔，对应关系预先存储在终端设备中。
可选地，结合上述第九方面，在第二种可能的实现方式中，目标调整信息为第二子载波间隔对应的上行发送时间的调整时间，终端设备的子载波间隔为第三子载波间隔时，处理单元，具体用于根据第三子载波间隔和第二子载波间隔的预设关系确定第一时间，第一时间为第三子载波间隔对应的上行发送时间的调整时间。处理单元，具体用于根据第一时间和TA调整上行发送时间。
可选地，结合上述第九方面或第九方面第一种或第九方面第二种可能的实施方式，在第三种可能的实现方式中，收发单元，具体用于设备接收系统信息块SIB1消息，SIB1消息中携带目标调整信息。
可选地，结合上述第九方面或第九方面第一种或第九方面第二种可能的实施方式，在第四种可能的实现方式中，收发单元，具体用于接收下行控制信息DCI消息，DCI消息中携带目标调整信息。
可选地，结合上述第九方面或第九方面第一种或第九方面第二种可能的实施方式，在第五种可能的实现方式中，收发单元，具体用于接收随机接入响应消息msg2，msg2消息中包括循环冗余校验CRC，CRC采用随机接入无线网络临时标识RA-RNTI和目标调整信息进行加扰。处理单元，还用于对CRC执行解扰操作，获取目标调整信息。
可选地，结合上述第九方面或第九方面第一种或第九方面第二种可能的实施方式，在 第六种可能的实现方式中，收发单元，具体用于接收系统信息块SIB1消息，SIB1消息中携带第一目标调整信息。收发单元，具体用于接收下行控制信息DCI消息，DCI消息中携带第二目标调整信息。处理单元，具体用于根据第一目标调整信息和第二目标调整信息以及TA，调整上行发送时间。
可选地，结合上述第九方面，在第七种可能的实现方式中，收发单元，具体用于获取物理小区标识PCI，PCI与夹角α绑定，夹角α为小区与卫星之间的水平夹角。处理单元，还用于根据获取到的夹角α按照预设的公式计算得到目标调整信息。
可选地，结合上述第九方面，在第八种可能的实现方式中，收发单元，具体用于接收卫星发送的广播消息，广播消息中携带了卫星的位置信息。处理单元，还用于根据自身的位置信息以及卫星的位置信息按照预设的公式计算出目标调整信息。
可选地，结合上述第九方面或第九方面任意一种可能的实现方式中，在第九种可能的实现方式中，处理单元，还用于收发单元接收第一次调度传输的消息msg3之后，等待预设时间启动第一定时器，第一定时器用于监控竞争解决消息msg4。
可选地，结合上述第九方面，在第十种可能的实现方式中，存储单元与处理单元可以划分为一个单元。
本申请第十方面提供一种网络设备，包括：存储单元，用于存储计算机可读指令。
还包括与存储单元耦合的收发单元，用于执行存储单元中的计算机可读指令从而执行以下操作：发送第一消息，第一消息中携带目标调整信息。发送第二消息，第二消息中携带时间提前量TA，目标调整信息和TA用于终端设备调整上行发送时间。
可选地，结合上述第十方面，在第一种可能的实现方式中，存储单元，具体用于存储目标调整信息与子载波间隔的对应关系，对应关系还存储在终端设备中。
可选地，结合上述第十方面，在第二种可能的实现方式中，目标调整信息为目标子载波间隔对应的上行发送时间的调整信息。
可选地，结合上述第十方面或第十方面第一种或第十方面第二种可能的实现方式，在第三种可能的实现方式中，收发单元，具体用于发送系统信息块SIB1消息，SIB1消息中携带目标调整信息。
可选地，结合上述第十方面或第十方面第一种或第十方面第二种可能的实现方式，在第四种可能的实现方式中，收发单元，具体用于发送下行控制信息DCI消息，DCI消息中携带目标调整信息。
可选地，结合上述第十方面或第十方面第一种或第十方面第二种可能的实现方式，在第五种可能的实现方式中，收发单元，具体用于发送随机接入响应消息msg2，msg2消息中包括循环冗余校验CRC，CRC采用随机接入无线网络临时标识RA-RNTI和目标调整信息进行加扰。
可选地，结合上述第十方面或第十方面第一种或第十方面第二种可能的实现方式，在第六种可能的实现方式中，网络设备包括第一网络设备和第二网络设备，其中第一网络设备包括第一收发单元，第二网络设备包括第二收发单元，其中，第一收发单元，具体用于发送系统信息块SIB1消息，SIB1消息中携带第一目标调整信息。第二收发单元，具体用 于发送下行控制信息DCI消息，DCI消息中携带第二目标调整信息。
本申请第十一方面提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第一方面或第一方面任意一种可能实现方式的通信方法。
本申请第十二方面提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第二方面或第二方面任意一种可能实现方式的通信方法。
本申请第十三方面提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第三方面或第三方面任意一种可能实现方式的通信方法。
本申请第十四方面提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第一方面或第一方面任意一种可能实现方式的通信方法。
本申请第十五方面提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第二方面或第二方面任意一种可能实现方式的通信方法。
本申请第十六方面提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第三方面或第三方面任意一种可能实现方式的通信方法。
本申请第十七方面提供一种芯片系统，该芯片系统包括处理器，用于支持终端设备实现上述第一方面或第一方面任意一种可能的实现方式中所涉及的功能。在一种可能的设计中，芯片系统还包括存储器，存储器，用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请第十八方面提供一种芯片系统，该芯片系统包括处理器，用于支持终端设备实现上述第三方面或第三方面任意一种可能的实现方式中所涉及的功能。在一种可能的设计中，芯片系统还包括存储器，存储器，用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请第十九方面提供一种芯片系统，该芯片系统包括处理器，用于支持网络设备实现上述第二方面或第二方面任意一种可能的实现方式中所涉及的功能。在一种可能的设计中，芯片系统还包括存储器，存储器，用于保存网络设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例允许终端设备根据目标调整信息和TA对上行发送时间灵活的进行调整，保证终端设备完成时间提前和信号处理等操作，保证上行的正交性。
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图3为本申请实施例为卫星系统中终端设备到卫星的距离的一个示意图；
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图5为本申请实施例中通信方法的一个实施例示意图；
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图8为本申请实施例中通信方法的另一个实施例示意图；
图9为本申请实施例中通信方法的另一个实施例示意图；
图10为本申请实施例中通信方法的另一个实施例示意图；
图11为本申请实施例提供的一个通信设备的硬件结构示意图；
图12为本申请实施例提供的终端设备的结构示意图；
图13为本申请实施例提供的另一个通信设备的硬件结构示意图；
图14为本申请实施例提供的网络设备的结构示意图。
具体实施方式
下面结合附图，对本申请的实施例进行描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。本领域普通技术人员可知，随着技术的发展和新场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例提供一种通信方法、终端设备、网络设备及存储介质，终端设备根据获取到的目标调整信息和TA调整上行发送时间，保证终端设备完成时间提前和信号处理等操作，保证上行的正交性。以下分别进行详细说明。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或模块的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或模块，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或模块。在本申请中出现的对步骤进行的命名或者编号，并不意味着必须按照命名或者编号所指示的时间/逻辑先后顺序执行方法流程中的步骤，已经命名或者编号的流程步骤可以根据要实现的技术目的变更执行次序，只要能达到相同或者相类似的技术效果即可。本申请中所出现的模块的划分，是一种逻辑上的划分，实际应用中实现时可以有另外的划分方式，例如多个模块可以结合成或集成在另一个系统中，或一些特征可以忽略，或不执行，另外，所显示的或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些端口，模块之间的间接耦合或通信连接可以是电性或其他类似的形式，本申请中均不作限定。并且，作为分离部件说明的模块或子模块可以是也可以不是物理上的分离，可以是也可以不是物理模块，或者可以分布到多个电路模块中，可以根据实际的需要选择其中的部分或全部模块来实现本申请方案的目的。
需要说明的是，本申请实施例中，“预先定义”或者“预设”表示可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的 方式来实现，本申请对于其具体的实现方式不做限定。比如预先定义可以是指协议中定义的。
还需要说明的是，本申请实施例中，名词“网络”和“系统”经常交替使用，但本领域的技术人员可以理解其含义。信息(information)，信号(signal)，消息(message)，信道(channel)有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
还需要说明的是，在本申请实施例中，“上报”和“反馈”经常交替使用，但本领域的技术人员可以理解其含义。对于终端设备来说，上报ACK和反馈ACK实质上都可以是通过物理上行信道发送ACK。因此，在本申请实施例中，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long termevolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、第五代(5th generation，5G)移动通信系统或新无线(new radio，NR)通信系统以及未来的移动通信系统等。
为便于理解本申请实施例，以图1a和图1b中示出的通信系统为例详细说明适用于本申请实施例的通信系统。图1a和图1b是适用于本申请实施例的无线通信系统的示意图。图1a所示，该无线通信系统可以包括单个或多个网络设备，或者如图1b所示，该通信系统可以包括单个或多个终端设备。单个网络设备可以向单个或多个终端设备传输数据或控制信令。多个网络设备也可以同时为单个终端设备传输数据或控制信令。该无线通信系统可支持协作多点传输(coordinated multiple points transmission，CoMP)，即，多个小区或多个网络设备可以协同参与一个终端设备的数据传输或者联合接收一个终端设备发送的数据，或者多个小区或多个网络设备进行协作调度或者协作波束成型。其中，该多个小区可以属于相同的网络设备或者不同的网络设备，并且可以根据信道增益或路径损耗、接收信号强度、接收信号指令等来选择。
应理解，该无线通信系统中的网络设备可以是任意一种具有无线收发功能的设备或可设置于该设备的芯片，该设备包括但不限于：基站、演进型基站(evolved node B，eNB)、家庭基站、无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为NR系统中的gNB，或者，还可以是构成基站的组件或一部分设备，如汇聚单元(central unit，CU)、分布式单元(distributedunit，DU)或基带单元(baseband unit，BBU)等。应理解，本申请的实施例中，对无线接入网设备所采用的具体技术和具体设备形态不做限定。在本申请中，无线接入网设备简称网络设备，如果无特殊说明，在本申请中，网络设备均指无线接入网设备。在本申请中，网络设备可以是指网络设备本身，也可以是应用于网络设备中完成无线通信处理功能的芯片。
在一些部署中，gNB可以包括CU和DU。gNB还可以包括射频单元(radio unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU实现无线资源控制(radio  resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能，DU实现无线链路控制(radio link control，RLC)、媒体接入控制(media access control，MAC)和物理(physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令或PHCP层信令，也可以认为是由DU发送的，或者，由DU+RU发送的。可以理解的是，网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为接入网RAN中的网络设备，也可以将CU划分为核心网CN中的网络设备，在此不做限制。
还应理解，该无线通信系统中的终端设备也可以称为终端、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。本申请实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑，还可以是应用于虚拟现实(virtual reality，VR)、增强现实(augmented reality，AR)、工业控制(industrial control)、无人驾驶(self driving)、远程医疗(remote medical)、智能电网(smart grid)、运输安全(transportation safety)、智慧城市(smart city)以及智慧家庭(smart home)等场景中的无线终端。本申请中将前述终端设备及可应用于前述终端设备的芯片统称为终端设备。应理解，本申请实施例对终端设备所采用的具体技术和具体设备形态不做限定。
应理解图1a或图1b仅为便于理解，示意性地示出了网络设备和终端设备，但这不应对本申请构成任何限定，该无线通信系统中还可以包括更多或更少数量的网络设备，也可以包括更多数量的终端设备，与不同的终端设备通信的网络设备可以是相同的网络设备，也可以是不同的网络设备，与不同的终端设备通信的网络设备的数量可以相同，也可以不同，本申请包括但不限于此。
对于图1a或图1b所示的通信系统，尤其是对于采用正交频分复用技术(orthogonal frequency division multiplexing，OFDM)的通信系统，需要保证上行传输的正交性，即，为了避免小区内干扰，抵消不同终端设备之间的传播延迟，要求来自不同的终端设备的上行信号到达网络设备的时间基本上是对齐的，即保证不同的终端设备所发送的信号可以同时到达网络设备。因此，网络设备会向终端设备发送时间提前量(time advance，TA)，TA也可以称为定时提前量，网络设备通过适当地控制每个终端设备的偏移，可以控制来自不同终端设备的上行信号到达网络设备的时间，对于距离网络设备较近的终端设备，可以根据较小的定时提前量发送上行信息，对于距离网络设备较远的UE，由于信号有较大的传输延迟，因此，需要根据较大的定时提前量发送上行信息。终端设备根据该接收的TA调整发送上行信号的时间，从而实现终端设备和网络设备之间的上行定时同步，上行定时同步也可以被称为上行时间同步。在终端设备看来，定时提前量本质上是下行子帧的起始时刻与上行子帧的起始时刻之间的一个负偏移(negative offset)。需要注意的是，通常定时提前量是两倍的传输时间量，两倍的传输时间量也被称为往返时间(round trip time，RTT)。在终端设备随机接入过程以及终端设备处于无线资源控制连接态(radio resource control_connected，RRC_CONNECTED)态时，网络设备都需要给终端设备发送TA指令。具体的，在一些实现中，终端设备可以通过随机接入过程来获取其时间提前量。在这些实例 中，终端设备可以通过在物理随机接入信道(PRACH)上使用零时间提前来发送同步码，以发起随机接入过程。该同步码可以包括在至少一个同步码序列前面加上的循环前缀(cyclic prefix，CP)。在特定实现中，循环前缀的长度和同步码序列的循环移位可以足够大到使得基站能够识别从不同无线设备发送的不同同步码序列。当网络设备检测到同步码时，网络设备可以确定同步码序列的身份以及相关联的可以用于上行链路同步的定时调整信息。在随机接入过程的后续阶段期间，可以向发送了被识别出的同步码序列的终端设备传输该定时调整信息。在完成随机接入过程之后，终端设备可以通过使用由网络设备提供的定时调整信息来发送由网络设备接收到的与其他终端设备实质上同步的上行链路信号。为了保证上行传输的正交性，终端设备在收到下行数据之后，一般等待若干个时隙(slot)才进行上行传输。
以下，不失一般性，以一个终端设备与一个网络设备之间的随机接入过程为例对上行发送时间进行说明。该终端设备可以为处于无线通信系统中与一个或多个网络设备具有无线连接关系的任意终端设备。如图2所示，为NR系统中随机接入过程的流程示意图。NR系统中随机接入过程可以包括如下步骤：
201、终端设备向网络设备发送随机接入前导消息(msg1)，网络设备接收终端设备发送的随机接入前导。
202、网络设备根据随机接入前导估计TA，并向终端设备发送随机接入响应消息(msg2)，msg2中携带TA。终端设备接收网络设备发送的随机接入响应，该随机接入响应中还可以包括随机前导索引和上行调度授权(UL grant)。
203、为了上行发送时间能覆盖RTT时长，网络设备期待在
Figure PCTCN2020081337-appb-000001
个slot接收到msg3。其中，μpusch和μpdcch分别代表物理上行共享信道(physical uplink shared channel，PUSCH)和物理下行控制信道(physical downlink control channel，PDCCH)的子载波间隔配置参数，因为在同一个小区中，子载波间隔配置参数一般是相同的，所以
Figure PCTCN2020081337-appb-000002
的值通常为1。终端设备根据上行调度授权中指示的时域位置和频域位置发送调度传输消息3(msg3)，具体的，终端设备接收到msg3的下行控制信息(downlink control information，DCI)之后，在第(K2+Δ)个slot之后发送msg3。需要说明是，为了保证网络设备在第(K2+Δ)个slot可以收到终端设备发送的msg3，终端设备通常在(K2+Δ-TA)个slot发送msg3。但是在地面网络系统中，TA的值较小，可以忽略不计，即可以认为终端设备在(K2+Δ)个slot发送msg3，网络设备可以在(K2+Δ)个slot收到msg2，以下对此不再重复赘述。其中，K2和Δ的取值是预先定义，示例性的，表1至表4给出了K2和Δ的取值：
表1:常规CP下默认的PUSCH时域资源分配
row index(行索引) PUSCH mapping type(映射类型) K2
1 typeA j
2 typeA j
3 typeA j
4 typeB j
5 typeB j
6 typeB j
7 typeB j
8 typeA j+1
9 typeA j+1
10 typeA j+1
11 typeA j+2
12 typeA j+2
13 typeA j+2
14 typeB j
15 typeA j+3
16 typeA j+2
表2：扩展CP下默认的PUSCH时域资源分配
Row index PUSCH mapping type K2
1 typeA j
2 typeA j
3 typeA j
4 typeB j
5 typeB j
6 typeB j
Row index PUSCH mapping type K2
7 typeB j
8 typeA j+1
9 typeA j+1
10 typeA j+1
11 typeA j+2
12 typeA j+2
13 typeA j+2
14 typeB j
15 typeA j+3
16 typeA j+3
表3:j的取值
μpusch j
0 1
1 1
2 2
3 3
表4:Δ的取值
μpusch Δ
0 2
1 3
2 4
3 6
由上述表格1至4可以显而易见的得出终端设备能够支持的最晚发送msg3的时间为接收到DCI之后的(j+3+Δ)个slot，接收到DCI之后的(j+3+Δ)个slot即为上行发送时间。当μpusch＝0时，即子载波间隔(sub-carrier spacing，SCS)为15kHz时，(j+3+Δ)＝6。其中μpusch和子载波间隔的关系为SCS＝2 μpusch×15kHZ。这意味着，终端设备能够支持的发送msg3的最晚时间为收到msg3的DCI之后的6个slot之后。
204、若网络设备正确接收msg3，则向终端设备发送消息4(msg4)用于解决冲突，冲突是指多个终端设备使用相同的上行资源发起随机接入过程，而网络设备认为只有1个终端设备发起随机接入。网络设备向终端设备发送竞争解决消息(msg4)。
205、一旦终端设备成功解码出msg4，则需要反馈确认(acknowledgement，ACK)给网络设备。
若UE在第n个slot接收到msg4且解码成功，则需要在第n+k个slot反馈ACK。对于下行控制信令1_0(downlink control information，DCI1_0)，k的最大值为8，即终端设备发送ACK的最晚时间为收到msg4的8个slot之后。其中，DCI指在PDCCH上传输的信令，DCI可分为多种格式，而每种格式可分别承载不同的控制信令。
对于卫星通信系统，RTT较长，会导致在6个或者8个slot的时长内，终端设备无法完成定时提前处理。例如，对于地球赤道同步轨道(geostationary orbit，GEO)中的bentpipe类型的卫星，其RTT可以达到544.751ms，上述描述的6个或者8个slot远远不能覆盖该RTT时长。需要说明的是，通常情况，当SCS为15kHz时，1个slot对应的时间长度为1ms，当SCS为30kHz时，1个slot对应的的时间长度为0.5ms，当SCS为60kHz时，1个slot对应的时间长度为0.25ms，所以当SCS为30kHz或60kHz时，其对应的上行发送时间也不能支持终端设备完成定时提前处理。
为了解决上述技术问题，一种解决的方式为定时提前量仅覆盖部分RTT，下面结合图3、图4进行具体的说明。如图3所示，为卫星系统中终端设备到卫星的距离示意图。将终端设备到卫星的距离划分为两部分，公共距离和剩余的差值距离。如图3所示，d 1代表公 共距离，表示终端设备所在的小区与卫星之间的最短距离。d 3代表剩余的差值，具体的d 3＝d 2-d 1，其中d 2代表终端设备到卫星的实际距离。定时提前的目的是保证不同终端设备所发送的信号可以同时到达网络设备，因此，在卫星系统中，若只补偿d 3所产生的时延，仍能达到此目的。为了计算d 3，首先要计算d 1和d 2。假设终端设备所在的小区的半径为R 1，地球的半径为R 2，卫星到地球的垂直高度为h，终端设备与卫星之间的水平夹角为α，则
Figure PCTCN2020081337-appb-000003
如图4所示，标注了公式中涉及的变量。由d3＝d2-d1可知，d3的取值与小区半径R1，终端设备与卫星之间的水平夹角为α以及卫星到地球的垂直高度为h有关。示例性的，表5给出了卫星在不同轨道高度下所支持的小区半径。
表5：卫星在不同轨道高度下所支持的小区半径
Figure PCTCN2020081337-appb-000004
下面以GEO卫星为例，计算d3的值，示例性的，表6给了GEO卫星所支持的最大半径为500km时，不同α对应的d3的取值，表7给出了GEO所支持的典型小区半径为250km时，不同α对应的d3的取值。
表6：半径500km情况下不同倾角所对应的d 3
α h R 1 d 2 d 1 d 3
10度 35786km 500km 40581km 39597km 984km
20度 35786km 500km 39551km 38613km 938km
30度 35786km 500km 38609km 37746km 863km
40度 35786km 500km 37778km 37018km 760km
50度 35786km 500km 37077km 36442km 635km
60度 35786km 500km 36519km 36029km 490km
70度 35786km 500km 36114km 35784km 330km
80度 35786km 500km 35868km 35708km 160km
表7：半径500km情况下不同倾角所对应的d 3
α h R 1 d 2 d 1 d 3
10度 35786km 250km 40581km 40089km 492km
20度 35786km 250km 39551km 39081km 470km
30度 35786km 250km 38609km 38177km 432km
40度 35786km 250km 37778km 37397km 381km
50度 35786km 250km 37077km 36758km 319km
60度 35786km 250km 36519km 36272km 247km
70度 35786km 250km 36114km 35946km 168km
80度 35786km 250km 35868km 35785km 83km
5G新空口(New Radio，NR)系统中，所设计的发送时间，即上述描述的上行发送时间是针对小区半径R 1为300km进行设计的。对于卫星系统中d 3较大的情况，则需要重新进行设计。举例说明，从上述表6可以看出，在半径为500km时，α为10度的时候，d 3的取值为983km，与现有的小区半径的差值为d 4＝984km-300km＝684km，d 4所产生的时延为684/c，约等于2.28ms，其中c代表光速。由于终端设备的定时提前量是为了覆盖往返时延，也就是差值的两倍。因此，在该场景下上行发送时间大约需要额外增加4.45ms。基于以上分析可知，针对卫星系统，该方案只可以应对d 3小于R 1，而无法应对d 3大于R 1的场景。
针对以上问题，本申请实施例提供了一种通信方法，对上行传输时间灵活的进行补偿和调整，保证终端设备完成定时提前和其他信号处理操作，下面将针对本申请实施例提供的通信方法进行具体的介绍。
图5为本申请实施例中通信方法的一个实施例示意图。
如图5所示，本申请实施例中通信方法的一个实施例可以包括：
501、终端设备获取第一消息，第一消息携带目标调整信息。
终端设备获取第一消息可以包括终端设备接收其他设备发送的第一消息，比如终端设备接收网络设备发送的第一消息，或者终端设备获取第一消息还可以包括终端设备获取自身的第一消息，或者还可以包括终端设备通过搜索信道获取第一消息，本申请实施例并不对终端设备获取第一消息的具体方式进行限制。该第一消息携带目标调整信息，该目标调整信息用于终端设备调整上行发送时间。
502、终端设备获取第二消息，第二消息携带时间提前量TA。
网络设备根据随机接入前导估计TA，并向终端设备发送msg2，msg2中携带TA。当然，终端设备还可以通过其他方式获取TA，本申请实施例并不对终端设备获取TA的方式进行限制，比如网络设备可以基于测量对应终端设备的上行传输来确定每个终端设备TA值。因此，只要终端设备有上行传输，网络设备就可以用来估计TA值，并通过下行消息发送给终端设备。
需要说明的，在一个具体的实施例中，第一消息和第二消息可以是同一条消息，即可以通过一条消息携带目标调整信息和TA，本申请实施例对此不做具体限定。
503、终端设备根据目标调整信息和TA，调整上行发送时间。
终端设备接收到目标调整信息和TA后，调整上行发送时间。举例说明，一种可能的情况为，终端设备未收到目标调整信息前，终端设备的上行发送时间为T1时刻，终端设备接收到目标调整信息后，根据目标调整信息上行发送时间调整为T2时刻，其中T2时刻可能是在T1时刻的基础上向后推迟t个slot，即T2＝T1+t个slot。进一步的举例说明，假设T1时刻为终端设备接收到msg3的DCI之后的(K2+Δ-TA)个slot，其中K2和Δ可以参考图2对应的流程图中描述的K2和Δ进行理解，此处不再重复赘述。则T2时刻即为终端设备接收到msg3的DCI之后的(K2+Δ-TA+t)个slot。
通过图5对应的实施例可知，终端设备可以根据目标调整信息对上行发送时间灵活的进行调整，保证终端设备完成时间提前和信号处理等操作，保证上行的正交性。
由图5对应的实施例可知，终端设备需要根据目标调整信息和TA调整上行发送时间，针对其中的目标调整信息，终端设备可以通过不同方式获取，下面将对终端设备获取目标调整信息的方式，以及根据目标调整信息调整上行发送时间进行详细的介绍。
图6为本申请实施例中通信方法的一个实施例示意图。
如图6所示，本申请实施例中通信方法的一个实施例可以包括：
601、终端设备接收网络设备发送的系统信息块(system information block，SIB)1消息。
NR中定义了若干不同的SIB，它们以所包含的不同类型的信息进行区分，例如，在NR中SIB1提供了终端设备初始接入的信息，SIB2提供了小区重选的消息。在NR中，除了SIB1按照160ms的间隔进行周期广播外，其他SIB的发送可以通过两种方式进行传输：一是以固定的时间间隔进行周期性的传输。二是在终端设备接入网络之后，基于终端设备的请求进行发送，以减少信令开销。在随机接入的过程中，终端设备发送msg3就执行普通的上行调度，这意味终端设备在随机接入中就需要知道调整的上行发送的时间。需要说明的是，在本申请实施例中，上行传输时间、上行数据发送时间、上行信号发送时间、上行发送时间经常交替使用，但本领域的技术人员可以理解其含义。因此，在本申请实施例中，在不强调其区别时，其所要表达的含义是一致的。因此，为了确保在终端设备随机接入之前可以获知调整的上行发送的时间，本申请实施例中，在SIB1消息中携带上行发送的时间的调整信息。下面对SIB1中如何添加调整信息进行详细的说明。
示例性的，为了说清楚SIB1中添加调整信息的方式，下面以GEO卫星为例进行说明，需要说明的是，本领域的技术人员根据本申请公开的实施例，可以显而易见的得到其他卫星，比如LEO，MEO等在SIB1中添加调整信息的方式。此外，本申请实施例中没有特殊指出的，都是以GEO卫星为例进行说明，但是对其他卫星比如LEO，MEO等卫星，本申请实施例提供的方法依然适用，本领域技术技术人员可以根据本申请提供的实施例公开的方法显而易见的得到其他卫星系统调整上行发送时间的方法，以下实施例对此不再重复赘述。
对于GEO卫星，最大所需额外增加的时间约为4.55ms。若考虑子载波间隔为15kHz的情况，所需增加的slot数目ξ可以为5。作为一组示例，表8给出了不同SCS下ξ的取值。
表8：不同SCS下ξ的取值
μpusch SCS ξ
0 15kHz 5
1 30kHz 10
2 60kHz 20
3 120kHz 40
SIB1包括多个信元(information element，IE)，比如可以包括描述小区接入相关信息(cell access related information)的信元，或者描述小区标识(cell identity)的信元等。在一个具体的实施例中，在cell access related information中，可以增加3比特信息以SCS＝15kHz进行ξ值的指示。由于终端设备知道自己的子载波间隔配置，因此其上行发送时间额外增加量为2 μpuschξ。
在一个具体的实施例中，可以在SIB1中新增加一个字段，该字段可以占用3比特，其具体范围为integer(0，5)，其余的两个取值保留，即reserved。可以通过该新增加的字段以SCS＝15kHz进行ξ值的指示。
602、终端设备根据接收到的SIB1，调整上行发送时间。
终端设备接收到SIB1之后，根据SIB1中携带的ξ值调整现有的上行发送时间。
在一个具体的实施例中，终端设备根据ξ与第一子载波间隔的对应关系，调整上行发送时间。第一子载波间隔为终端设备采用的子载波间隔，对应关系可以预先存储在终端设备和卫星中。举例说明，终端设备和卫星预先存储有子载波间隔和ξ的对应关系，终端设备知道自身采用的子载波间隔，当终端设备接收到某个ξ时，可以根据预先存储的子载波间隔和ξ的对应关系，调整上行发送时间。
在一个具体的实施例中，终端设备根据ξ，调整上行发送时间，可以包括：ξ为第二子载波间隔对应的上行发送时间的调整时间。终端设备的子载波间隔为第三子载波间隔时，终端设备根据第三子载波间隔和第二子载波间隔的预设关系确定第一时间，第一时间为第三子载波间隔对应的上行发送时间的调整时间。所述终端设备根据第一时间调整上行发送时间。举例说明，以SCS＝15kHz进行ξ值的指示，若SIB1中携带的ξ值为5，且终端设备确定自身的μpusch为0，则终端设备应当在现有的上行发送时间的基础上再增加5个slot。在随机接入过程中，即终端设备接收到msg3的DCI之后，最晚等待T1+5个slot之后发送msg3，其中T1为终端设备未接收到SIB1之前的上行发送时间。
由图6对应的实施例可知，卫星打下若干个波束，服务若干个小区，卫星采用广播方式传达ξ值，具体的，通过SIB1消息传达ξ值，当终端设备接收到SIB1消息时，可以获取到ξ值，并根据ξ值，调整上行发送时间。
图7为本申请实施例中通信方法的一个实施例示意图。
如图7所示，本申请实施例中通信方法的一个实施例可以包括：
701、终端设备接收网络设备发送的下行控制信息(downlink control information，DCI)消息。
网络设备向终端设备发送DCI消息，用于网络设备和终端设备之间的数据传输。示例性地，网络设备通过PDCCH向终端设备发送DCI，DCI消息中可以包括数据信道的调度信息，基于该调度信息，网络设备和终端设备通过数据信道进行数据传输。在本申请实施例中，可以在DCI消息中携带调整上行发送时间的指示，比如，可以在DCI中增加3比特信息，进行上行发送时间调整的指示，示例性的，表9示出了一种NR系统中，增加3比特进行上行发送时间调整指示的DCI1_0。需要说明的是，调整上行发送时间的指示也可以称为调整信息，本申请实施例并不对调整信息的名称进行限制。
表9：增加3比特后的DCI 1_0
Figure PCTCN2020081337-appb-000005
需要说明的是，图7对应的实施例和图6对应的实施例可以结合应用。比如，在一个具体的实施例中，为了覆盖公共距离的RTT，公共距离需要调整的上行发送可以通过图6对应的实施例中的SIB1消息进行指示，为了覆盖剩余的差值距离的RTT，剩余的差值距离需要调整的上行发送可以通过图7对应的实施例中的DCI消息进行指示。举例说明，假设第一终端设备和第二终端处于同一个小区，其中第一终端设备对应的夹角α 1大于第二终端设备对应的夹角α 2，若第一终端设备上行发送时间一共需要调整562ms，第二终端设备上行发送时间一共需要调整563ms，则可以通过SIB1消息指示第一终端设备和第二终端设备将上行发送时间调整560ms，再通过第一DCI消息指示第一终端设备将上行发送时间调整2ms，通过第二DCI消息指示第二终端再将上行发送时间调整3ms。
示例性的，表10给出了当SCS＝15kHz时DCI1_0中的比特信息与ξ的映射关系，在本 申请实施例中，可以通过SCS＝15kHz进行ξ值的指示。由于终端设备知道自己的子载波间隔配置，因此其上行发送时间额外增加量为2 μpuschξ。需要说明是，以SCS＝15kHz进行ξ值的指示只是为了举例说明，并不代表对指示信息的限制，以下列举通过SCS＝15kHz进行ξ值的指示也是如此，此后的实施例对此不再重复赘述。
表10：DCI1_0中的比特信息与ξ的一种映射关系
比特信息 ξ
000 0
001 1
010 2
011 3
100 4
101 5
110 reserved
111 reserved
在一个具体的实施例中，如果DCI中可增加的资源受限，例如只能增加2比特或者1比特信息，则可以采用非连续的映射方式。示例性的，表11给出了当只能增加2比特信息时，DCI1_0中的比特信息与ξ的映射关系。示例性的，表12给出了当只能增加1比特信息时，DCI1_0中的比特信息与ξ的映射关系。
表11：DCI1_0中的比特信息与ξ的另一种映射关系
比特信息 ξ
00 0
01 2
比特信息 ξ
10 4
11 5
表12：DCI1_0中的比特信息与ξ的另一种映射关系
比特信息 ξ
0 2
1 5
702、终端设备根据接收到的DCI消息，调整上行发送时间。
终端设备接收到DCI之后，根据DCI中携带的ξ值调整现有的上行发送时间。
在一个具体的实施例中，终端设备根据ξ与第一子载波间隔的对应关系，调整上行发送时间。第一子载波间隔为终端设备采用的子载波间隔，对应关系可以预先存储在终端设备和卫星中。举例说明，终端设备和卫星预先存储有子载波间隔和ξ的对应关系，终端设备知道自身采用的子载波间隔，当终端设备接收到某个ξ时，可以根据预先存储的子载波 间隔和ξ的对应关系，调整上行发送时间。
在一个具体的实施例中，终端设备根据ξ，调整上行发送时间，可以包括：ξ为第二子载波间隔对应的上行发送时间的调整时间。终端设备的子载波间隔为第三子载波间隔时，终端设备根据第三子载波间隔和第二子载波间隔的预设关系确定第一时间，第一时间为第三子载波间隔对应的上行发送时间的调整时间。所述终端设备根据第一时间调整上行发送时间。举例说明，若DCI中携带的ξ值为1，且终端设备确定自身的μpusch为0，则终端设备应当在现有的上行发送时间的基础上再增加1个slot，或者，若终端设备确定自身的μpusch为1，则终端设备根据2 μpuschξ计算得到2，即终端设备应当在现有的上行发送时间的基础上再增加2个slot。
图8为本申请实施例中通信方法的一个实施例示意图。
如图8所示，本申请实施例中通信方法的一个实施例可以包括：
801、网络设备根据msg1的时频位置计算随机接入无线网络临时标识(random access-radio network temporary identifier，RA-RNTI)，并对循环冗余校验(cyclic redundancy check，CRC)进行加扰。
网络设备通过控制信道向终端设备发送控制信息，用于支持网络设备和终端设备进行通信。网络设备向终端设备发送控制信道，示例性地，该控制信道为PDCCH。其中，控制信道携带的信息的CRC被使用相应的无线网络临时标识(radio network temporary identifier,RNTI)加扰，用于进行控制信道的传输的错误检测。终端设备接收控制信道，根据上述相应的RNTI对控制信道进行解码，获得数据信道的调度信息，使得终端设备能够根据该调度信息通过数据信道和网络设备进行通信。终端设备处在不同的状态，可以使用不同的RNTI解扰，比如，在随机接入过程中，等待网络设备回复状态,终端设备使用RA-RNTI来解扰，获取上行资源分配消息。在本申请实施例中，网络设备根据接收msg1的时频位置计算RA-RNTI，并对CRC进行加扰，为了指示上行传输额外增加的slot数目，可以将计算处的RA-RNTI进行一定程度的偏移，即采用RA-RNTI+ξ进行加扰，其中ξ的取值可以为{0,1,2,3,4,5}。在图8对应的实施例中，CRC可以认为是一种调整信息。
802、网络设备向终端设备发送msg2消息，msg2消息中包括CRC。
803、终端设备根据接收到的msg2消息，利用RA-RNTI+ξ对CRC执行解扰操作。
终端设备收到msg2时，利用RA-RNTI+ξ对CRC执行解扰操作，若解扰成功，则可获取ξ的值。例如，若终端设备利用RA-RNTI+3成功解扰出信息，则认为ξ＝3。示例性的，本申请实施例中该ξ值对应于SCS＝15kHz的情况，对于其他子载波间隔，可以根据2 μpuschξ计算获得。
804、终端设备根据ξ，调整上行发送时间。
在一个具体的实施例中，终端设备根据ξ与第一子载波间隔的对应关系，调整上行发送时间。第一子载波间隔为终端设备采用的子载波间隔，对应关系可以预先存储在终端设备和卫星中。举例说明，终端设备和卫星预先存储有子载波间隔和ξ的对应关系，终端设备知道自身采用的子载波间隔，当终端设备接收到某个ξ时，可以根据预先存储的子载波间隔和ξ的对应关系，调整上行发送时间。
在一个具体的实施例中，终端设备根据ξ，调整上行发送时间，可以包括：ξ为第二子载波间隔对应的上行发送时间的调整时间。终端设备的子载波间隔为第三子载波间隔时，终端设备根据第三子载波间隔和第二子载波间隔的预设关系确定第一时间，第一时间为第三子载波间隔对应的上行发送时间的调整时间。所述终端设备根据第一时间调整上行发送时间。举例说明，若终端设备利用RA-RNTI+3成功解扰出信息，则认为ξ＝3，若终端设备的确定自身的μpusch为0，则终端设备确定在现有的上行发送时间的基础上再增加3个slot，或者若终端设备的确定自身的μpusch为1，则终端设备根据2 μpuschξ＝6，则终端设备确定在现有的上行发送时间的基础上再增加6个slot。
需要说明的是，图8对应的实施例可以和图7对应的实施例以及图6对应的实施例结合应用。比如，在一个具体的实施例中，为了覆盖公共距离的RTT，公共距离需要调整的上行发送可以通过图6对应的实施例中的SIB1消息进行指示，为了覆盖剩余的差值距离的RTT，剩余的差值距离需要调整的上行发送可以通过图7对应的实施例中的DCI消息以及图8对应的实施例中的msg2进行指示。举例说明，假设第一终端设备和第二终端处于同一个小区，其中第一终端设备对应的夹角α 1大于第二终端设备对应的夹角α 2，若第一终端设备上行发送时间一共需要调整562.5ms，第二终端设备上行发送时间一共需要调整563.3ms，则可以通过SIB1消息指示第一终端设备和第二终端设备将上行发送时间调整560ms。通过第一DCI消息指示第一终端设备再将上行发送时间调整2ms，通过第二DCI消息指示第二终端再将上行发送时间调整3ms。通过第一msg2消息指示第一终端设备再将上行发送时间调整0.5ms，在通过第二msg2消息指示第一终端设备再将上行发送时间调整0.3ms，第一终端设备和第二终端接收到msg2之后需要解扰获得ξ的取值，这里不再重复赘述。
在卫星系统中，由于定时提前量较大，因此，定时提前也可分为两部分，即公共定时提前量和剩余的差值部分。一般而言，为了节省开销，由于公共定时提前量对于小区内不同终端设备都相同，因此采用广播的方式，由SIB1携带下发给终端。剩余的差值部分由DCI消息或msg2携带，因此，当终端设备接收到DCI消息或者解码msg2之后，就获得了剩余的差值部分，进而在后续上行传输后，根据所得到的ξ值进行应用。
图9为本申请实施例中通信方法的一个实施例示意图。
如图9所示，本申请实施例中通信方法的一个实施例可以包括：
901、网络设备预先将物理小区标识(physical cell identity，PCI)和夹角α绑定。
PCI作为物理小区标识，提供了识别小区的功能，使得终端设备可以区分不同小区的无线信号。目前5G NR系统中共有1008个PCI，在一片区域内，使用一组PCI值，以区分不同的小区，而距离该区域较远的区域，上述PCI值会进行相应的复用。对于一个卫星所覆盖的小区，其PCI值各不相同，以进行小区的区分。在本申请实施例中，可以预先将PCI值与夹角α进行绑定，当终端设备获取到PCI时，即可计算得到α，进而计算出上行发送所需要额外增加的推迟时间，最终获取ξ值。示例性的，表13给出了当SCS＝15kHz，小区半径为500km时的不同夹角α所对应的d 3的取值。需要说明的是，表13中给出的PCI值仅为示意，具体分配时可在实际组网时进行划分。
表13：半径500km情况下不同α所对应的d 3
α PCI ξ
10 1 5
20 2 5
30 8 4
40 13 4
50 65 3
60 89 2
70 102 1
80 536 0
902、终端设备根据获取到的PCI得到α，并根据α得到ξ的取值。
终端设备可以根据同步信道确定小区的PCI，当终端设备获取到PCI时，就可以获得与该PCI进行绑定的夹角α,在根据夹角α计算出ξ的取值，具体的计算公式可以参阅图3图4描述的场景中给出的公式进行理解，此处不再重复赘述，在本申请实施例中的α可以认为是小区中距离卫星最远的终端设备与卫星之间的水平夹角。需要说明的是，本申请实施例并不限定终端设备获取PCI的方式，比如终端设备还可以通过检测出的主同步信号(primary synchronization signal，PSS)和辅同步信号(secondary synchronization signal，SSS)的序列组合获取PCI。
903、终端设备根据ξ的取值，调整上行发送时间。
终端设备获取到ξ之后，根据ξ的取值，增加现有的上行发送时间，确定上行数据发送的具体时间。举例说明，若获取到ξ为5，且终端设备确定自身的μpusch为0，则终端设备应当在现有的上行发送时间的基础上再增加5个slot，或者，若终端设备确定自身的μpusch为1，则终端设备根据2 μpuschξ计算得到10，即终端设备应当在现有的上行发送时间的基础上再增加10个slot。
图10为本申请实施例中通信方法的一个实施例示意图。
如图10所示，本申请实施例中通信方法的一个实施例可以包括：
1001、网络设备广播自身的位置信息。
星历是指在全球定位系统(global positioning system)测量中，卫星运行随时间而变的精确位置或轨迹表。在本申请实施例中，网络设备可以为卫星。卫星广播自己的位置信息，比如可以用坐标(X,Y,Z)进行表示。
1002、网络设备向终端设备发送自身的位置信息。
1003、终端设备根据卫星的位置与自身的位置计算得到ξ值。
若终端设备配置有定位装置，比如终端设备配置有GPS等，则终端设备可以获知自身的位置信息，比如可以用坐标(x,y,z)进行表示。根据卫星和终端设备的坐标信息，终端设备可以获知卫星与终端设备之间的距离以及倾角，设定小区半径，按照预设的公式可以 计算得到d1，d2的值，进而可以计算得到d3的值，最终计算得到ξ值。具体的计算公式可以参阅图3图4描述的场景中给出的公式进行理解，此处不再重复赘述。
1004、终端设备根据ξ的取值，调整上行发送时间。
终端设备获取到ξ之后，根据ξ的取值，增加现有的上行发送时间，确定上行数据发送的具体时间。举例说明，若获取到ξ为5，且终端设备确定自身的μpusch为0，则终端设备应当在现有的上行发送时间的基础上再增加5个slot，或者，若终端设备确定自身的μpusch为1，则终端设备根据2 μpuschξ计算得到10，即终端设备应当在现有的上行发送时间的基础上再增加10个slot。
在一个具体的实施例中，不同终端设备也可以在原有的上行发送时间的基础上统一额外增加m个slot，该m个slot为小区中距离卫星最远的终端设备所需额外增加的上行发送的时间。
在一个具体的实施例中，终端设备根据第一关系将第一上行发送时间调整为第二上行发送时间，第一关系预先存储在终端设备中，第一关系为第一卫星与第一上行发送时间的调整时间的对应关系。
在一个具体的实施例中，在图5至图10所对应的实施例的基础上，还可以包括：终端设备接收msg3之后，等待预设时间打开第一定时器，该第一定时器用于监控msg4。具体的，终端设备在发送msg3之后，启动第一定时器，以监控msg4，进而解决随机接入中的竞争冲突问题。以第一定时器为ra-ContentionResolutionTimer为例进行说明，该定时器最大可支持64子帧，对于GEO卫星，远远不能覆盖500多毫秒的RTT，若还按照此定时器来监控msg4，则该定时器超时后，msg4还未到达，会产生随机接入不必要的失败。在本申请实施例中，将打开第一定时器的时间按照预设的数值进行偏移，例如，对于GEO卫星，发送msg3之后可以等待544ms，再打开ra-ContentionResolutionTimer定时器来监控msg4。需要说明的是，也可以直接调整第一定时器的范围，比如，针对卫星系统，可以按照实际需求调整第一定时器最大可支持的定时长度，比如可以将最大可支持的定时长度修改为500子帧。
上述主要从网络设备和终端设备之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，上述网络设备和终端设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的模块及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
从硬件结构上来描述，图5至图10中的终端设备以及网络设备可以由一个实体设备实现，也可以由多个实体设备共同实现，还可以是一个实体设备内的一个逻辑功能模块，本申请实施例对此不作具体限定。
例如，终端设备可以通过图11中的通信设备来实现。图11所示为本申请实施例提供的通信设备的硬件结构示意图。包括：通信接口1101和处理器1102，还可以包括存储器1103。
通信接口1101可以使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
处理器1102包括但不限于中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)，专用集成电路(application-specific integrated circuit，ASIC)或者可编程逻辑器件(programmable logic device，PLD)中的一个或多个。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。处理器1102负责通信线路1104和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节，电源管理以及其他控制功能。存储器1103可以用于存储处理器1102在执行操作时所使用的数据。
存储器1103可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically er服务器able programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路1104与处理器1102相连接。存储器1103也可以和处理器1102集成在一起。如果存储器1103和处理器1102是相互独立的器件，存储器1103和处理器1102相连，例如存储器1103和处理器1102可以通过通信线路通信。网络接口1101和处理器1102可以通过通信线路通信，网络接口1101也可以与处理器1102直连。
通信线路1104可以包括任意数量的互联的总线和桥，通信线路1104将包括由处理器1102代表的一个或多个处理器1102和存储器1103代表的存储器的各种电路链接在一起。通信线路1104还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本申请不再对其进行进一步描述。
在一个具体的实施方式中，该终端设备，可以包括：存储器，用于存储计算机可读指令。
还可以包括，与存储器耦合的通信接口，用于执行以下操作：
获取第一消息，第一消息携带目标调整信息。
获取第二消息，第二消息携带时间提前量TA。
还可以包括：与通信接口耦合的处理器，用于执行存储器中的计算机可读指令从而执行以下操作：
根据通信接口获取的目标调整信息和TA，调整上行发送时间。
在一个具体的实施方式中，存储器，还用于存储目标调整信息与第一子载波间隔的对应关系。
处理器，具体用于根据存储器存储的目标调整信息与第一子载波间隔的对应关系以及 通信接口获取的TA，调整上行发送时间，第一子载波间隔为终端设备采用的子载波间隔，对应关系预先存储在终端设备中。
在一个具体的实施方式中，目标调整信息为第二子载波间隔对应的上行发送时间的调整时间，处理器，具体用于终端设备的子载波间隔为第三子载波间隔时，根据第三子载波间隔和第二子载波间隔的预设关系确定第一时间，第一时间为第三子载波间隔对应的上行发送时间的调整时间；
处理器，具体用于根据第一时间和TA调整上行发送时间。
在一个具体的实施方式中，通信接口，具体用于设备接收系统信息块SIB1消息，SIB1消息中携带目标调整信息。
在一个具体的实施方式中，通信接口，具体用于接收下行控制信息DCI消息，DCI消息中携带目标调整信息。
在一个具体的实施方式中，通信接口，具体用于接收随机接入响应消息msg2，msg2消息中包括循环冗余校验CRC，CRC采用随机接入无线网络临时标识RA-RNTI和目标调整信息进行加扰。
处理器，还用于对CRC执行解扰操作，获取目标调整信息。
在一个具体的实施方式中，通信接口，具体用于接收系统信息块SIB1消息，SIB1消息中携带第一目标调整信息。
通信接口，具体用于接收下行控制信息DCI消息，DCI消息中携带第二目标调整信息。
处理器，具体用于根据第一目标调整信息和第二目标调整信息以及TA，调整上行发送时间。
在一个具体的实施方式中，通信接口，具体用于获取物理小区标识PCI，PCI与夹角α绑定，夹角α为小区与卫星之间的水平夹角。
处理器，还用于根据获取到的夹角α按照预设的公式计算得到目标调整信息。
在一个具体的实施方式中，通信接口，具体用于接收卫星发送的广播消息，广播消息中携带了卫星的位置信息。
处理器，还用于根据自身的位置信息以及卫星的位置信息按照预设的公式计算出目标调整信息。
在一个具体的实施方式中，处理器，还用于通信接口接收第一次调度传输的消息msg3之后，等待预设时间启动第一定时器，第一定时器用于监控竞争解决消息msg4。
在一个具体的实施方式中，存储器和处理器可以集成在一起。
在本申请实施例中，可以将通信接口视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元，将存储器视为终端设备的存储单元。如图12所示，终端设备包括收发单元1210和处理单元1220。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元1210中用于实现接收功能的器件视为接收单元，将收发单元1210中用于实现发送功能的器件视为发送单元，即收发单元1210包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接 收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
在一个具体的实施方式中，收发单元1210用于执行图5中的步骤501和502中终端设备侧的获取操作，和/或收发单元1210还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1220，用于执行图2中的步骤503，和/或处理单元1220还用于执行本申请实施例中终端设备侧的其他处理步骤。
在一个具体的实施方式中，收发单元1210用于执行图6中的步骤601中终端设备侧的接收操作，和/或收发单元1210还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1220，用于执行图6中的步骤602，和/或处理单元1220还用于执行本申请实施例中终端设备侧的其他处理步骤。
在一个具体的实施方式中，收发单元1210用于执行图7中的步骤801中终端设备侧的接收操作，和/或收发单元1210还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1220，用于执行图7中的步骤702，和/或处理单元1220还用于执行本申请实施例中终端设备侧的其他处理步骤。
在一个具体的实施方式中，收发单元1210用于执行图8中的步骤701中终端设备侧的接收操作，和/或收发单元1210还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1220，用于执行图8中的步骤803和804，和/或处理单元1220还用于执行本申请实施例中终端设备侧的其他处理步骤。
在一个具体的实施方式中，收发单元1210用于执行图9中的步骤901中终端设备侧的获取操作，和/或收发单元1210还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1220，用于执行图8中的步骤903，和/或处理单元1220还用于执行本申请实施例中终端设备侧的其他处理步骤。
在一个具体的实施方式中，收发单元1210用于执行图10中的步骤1002中终端设备侧的接收操作，和/或收发单元1210还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1220，用于执行图10中的步骤1003和1004，和/或处理单元1220还用于执行本申请实施例中终端设备侧的其他处理步骤。
此外，网络设备可以通过图13中的通信设备来实现。图13所示为本申请实施例提供的通信设备的硬件结构示意图。包括：通信接口1301和处理器1302，还可以包括存储器1303。
通信接口1301可以使用任何收发器一类的装置，用于与其他设备或通信网络通信。
处理器1302包括但不限于中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)，专用集成电路(application-specific integrated circuit，ASIC)或者可编程逻辑器件(programmable logic device，PLD)中的一个或多个。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。处理器1302负责通信线路1304和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节，电源管理以及其他控制功能。存储器1303可以用于存储处理器1302在执行操作时所使用的数据。
存储器1303可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically er服务器able programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路1304与处理器1302相连接。存储器1303也可以和处理器1302集成在一起。如果存储器1303和处理器1302是相互独立的器件，存储器1303和处理器1302相连，例如存储器1303和处理器1302可以通过通信线路通信。网络接口1301和处理器1302可以通过通信线路通信，网络接口1301也可以与处理器1302直连。
通信线路1304可以包括任意数量的互联的总线和桥，通信线路1304将包括由处理器1302代表的一个或多个处理器1302和存储器1303代表的存储器的各种电路链接在一起。通信线路1304还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本申请不再对其进行进一步描述。
在一个具体的实施方式中，该网络设备，可以包括：
存储器，用于存储计算机可读指令。
和与存储器耦合的通信接口，通信接口用于执行以下操作：
发送第一消息，第一消息中携带目标调整信息。
发送第二消息，第二消息中携带时间提前量TA，目标调整信息和TA用于终端设备调整上行发送时间。
在一个具体的实施方式中，存储器，具体用于存储目标调整信息与子载波间隔的对应关系，对应关系还存储在终端设备中。
在一个具体的实施方式中，目标调整信息为目标子载波间隔对应的上行发送时间的调整信息。
在一个具体的实施方式中，通信接口，具体用于发送系统信息块SIB1消息，SIB1消息中携带目标调整信息。
在一个具体的实施方式中，通信接口，具体用于发送下行控制信息DCI消息，DCI消息中携带目标调整信息。
在一个具体的实施方式中，处理器，具体用于根据msg1的时频位置计算RA-RNTI，并采用RA-RNTI+ξ对CRC进行加扰。
通信接口，具体用于发送随机接入响应消息msg2，msg2消息中包括循环冗余校验CRC，CRC采用随机接入无线网络临时标识RA-RNTI和目标调整信息进行加扰。
在一个具体的实施方式中，网络设备包括第一网络设备和第二网络设备，其中第一网络设备包括第一通信接口，第二网络设备包括第二通信接口，其中，第一通信接口，具体用于发送系统信息块SIB1消息，SIB1消息中携带第一目标调整信息。第二通信接口，具 体用于发送下行控制信息DCI消息，DCI消息中携带第二目标调整信息。
在一个具体的实施方式中，处理器，具体用于将PCI和α绑定。
在本申请实施例中，可以将通信接口视为网络设备的收发单元，将具有处理功能的处理器视为网络设备的处理单元，将存储器视为网络设备的存储单元。如图14所示，网络设备可以包括收发单元1410和处理单元1420。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元1410中用于实现接收功能的器件视为接收单元，将收发单元1410中用于实现发送功能的器件视为发送单元，即收发单元1410包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
在一个具体的实施方式中，收发单元1410用于执行图5中的步骤501和502中网络设备侧的收发操作，和/或收发单元1410还用于执行本申请实施例中网络设备侧的其他收发步骤。处理单元1420。
在一个具体的实施方式中，收发单元1410可以用于执行图5中的步骤501和502中网络设备侧的收发操作，或图6中的步骤601中网络设备侧的收发操作，或图7中的步骤701中网络设备侧的收发操作，和/或收发单元1410还用于执行图5或图6或图7对应的实施例中网络设备侧的其他收发步骤。
在一个具体的实施方式中，收发单元1410可以用于执行图8中的步骤802中网络设备侧的收发操作，和/或收发单元1410还用于执行本申请实施例中网络设备侧的其他收发步骤。处理单元1420，用于执行图8中的步骤801，和/或处理单元1420还用于执行本申请实施例中网络设备侧的其他处理步骤。
在一个具体的实施方式中，处理单元1420，用于执行图9中的步骤901，和/或处理单元1420还用于执行本申请实施例中网络设备侧的其他处理步骤。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。
所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可 以包括：ROM、RAM、磁盘或光盘等。
以上对本申请实施例所提供的通信方法、终端设备、网络设备以及存储介质进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (41)

  1. 一种通信方法，其特征在于，包括：
    终端设备获取第一消息，所述第一消息携带目标调整信息；
    所述终端设备获取第二消息，所述第二消息携带时间提前量TA；
    所述终端设备根据所述目标调整信息和所述TA，调整上行发送时间。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备根据所述目标调整信息和所述TA，调整上行发送时间，包括：
    所述终端设备根据所述目标调整信息与第一子载波间隔的对应关系以及所述TA，调整上行发送时间，所述第一子载波间隔为所述终端设备采用的子载波间隔，所述对应关系预先存储在所述终端设备中。
  3. 根据权利要求1所述的方法，其特征在于，所述目标调整信息为第二子载波间隔对应的上行发送时间的调整时间；
    所述终端设备根据所述目标调整信息和所述TA，调整上行发送时间，包括：
    所述终端设备的子载波间隔为第三子载波间隔时，所述终端设备根据所述第三子载波间隔和所述第二子载波间隔的预设关系确定第一时间，所述第一时间为所述第三子载波间隔对应的上行发送时间的调整时间；
    所述终端设备根据所述第一时间和所述TA调整上行发送时间。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，终端设备获取第一消息，所述第一消息携带目标调整信息，包括：
    所述终端设备接收系统信息块SIB1消息，所述SIB1消息中携带所述目标调整信息。
  5. 根据权利要求1至3任一项所述的方法，其特征在于，终端设备获取第一消息，所述第一消息携带目标调整信息，包括：
    所述终端设备接收下行控制信息DCI消息，所述DCI消息中携带所述目标调整信息。
  6. 根据权利要求1至3任一项所述的方法，其特征在于，终端设备获取第一消息，所述第一消息携带目标调整信息，包括：
    所述终端设备接收随机接入响应消息msg2，所述msg2消息中包括循环冗余校验CRC，所述CRC采用随机接入无线网络临时标识RA-RNTI和所述目标调整信息进行加扰；
    在所述终端设备根据所述目标调整信息和所述TA，调整上行发送时间之前，还包括：
    所述终端设备对所述CRC执行解扰操作，获取所述目标调整信息。
  7. 根据权利要求1至3任一项所述的方法，其特征在于，终端设备获取第一消息，所述第一消息携带目标调整信息，包括：
    所述终端设备接收系统信息块SIB1消息，所述SIB1消息中携带第一目标调整信息；
    所述终端设备接收下行控制信息DCI消息，所述DCI消息中携带第二目标调整信息；
    所述终端设备根据所述目标调整信息和所述TA，调整上行发送时间，包括：
    所述终端设备根据所述第一目标调整信息和所述第二目标调整信息以及所述TA，调整上行发送时间。
  8. 根据权利要求1所述的方法，其特征在于，终端设备获取第一消息，所述第一消息 携带目标调整信息，包括：
    终端设备获取物理小区标识PCI，所述PCI与夹角α绑定，所述夹角α为小区与卫星之间的水平夹角；
    在所述终端设备根据所述目标调整信息和所述TA，调整上行发送时间之前，还包括：
    所述终端设备根据获取到的夹角α按照预设的公式计算得到所述目标调整信息。
  9. 根据权利要求1所述的方法，其特征在于，终端设备获取第一消息，所述第一消息携带目标调整信息，包括：
    所述终端设备接收卫星发送的广播消息，所述广播消息中携带了所述卫星的位置信息；
    在所述终端设备根据所述目标调整信息和所述TA，调整上行发送时间之前，还包括：
    所述终端设备根据自身的位置信息以及卫星的位置信息得到所述目标调整信息。
  10. 根据权利要求1至9任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第一次调度传输的消息msg3之后，等待预设时间启动第一定时器，所述第一定时器用于监控竞争解决消息msg4。
  11. 一种通信方法，其特征在于，包括：
    网络设备发送第一消息，所述第一消息中携带目标调整信息；
    所述网络设备发送第二消息，所述第二消息中携带时间提前量TA，所述目标调整信息和所述TA用于终端设备调整上行发送时间。
  12. 根据权利要求11所述的方法，其特征在于，还包括：
    所述网络设备预先存储目标调整信息与子载波间隔的对应关系，所述对应关系还存储在所述终端设备中。
  13. 根据权利要求11所述的方法，其特征在于，所述目标调整信息为目标子载波间隔对应的上行发送时间的调整信息。
  14. 根据权利要求11至13任一项所述的方法，其特征在于，网络设备发送第一消息，所述第一消息中携带目标调整信息，包括：
    所述网络设备发送系统信息块SIB1消息，所述SIB1消息中携带所述目标调整信息。
  15. 根据权利要求11至13任一项所述的方法，其特征在于，网络设备发送第一消息，所述第一消息中携带目标调整信息，包括：
    所述网络设备发送下行控制信息DCI消息，所述DCI消息中携带所述目标调整信息。
  16. 根据权利要求11至13任一项所述的方法，其特征在于，网络设备发送第一消息，所述第一消息中携带目标调整信息，包括：
    所述网络设备发送随机接入响应消息msg2，所述msg2消息中包括循环冗余校验CRC，所述CRC采用随机接入无线网络临时标识RA-RNTI和所述目标调整信息进行加扰。
  17. 根据权利要求11至13任一项所述的方法，其特征在于，网络设备发送第一消息，所述第一消息中携带目标调整信息，包括：
    第一网络设备发送系统信息块SIB1消息，所述SIB1消息中携带第一目标调整信息；
    第二网络设备发送下行控制信息DCI消息，所述DCI消息中携带第二目标调整信息。
  18. 一种终端设备，其特征在于，包括：
    存储器，用于存储计算机可读指令；
    还包括，与所述存储器耦合的通信接口，用于获取第一消息，所述第一消息携带目标调整信息；
    所述通信接口，还用于获取第二消息，所述第二消息携带时间提前量TA；
    还包括：与所述通信接口耦合的处理器，用于执行所述存储器中的计算机可读指令从而执行以下操作：
    根据所述通信接口获取的所述目标调整信息和所述TA，调整上行发送时间。
  19. 根据权利要求18所述的终端设备，其特征在于，还包括：
    存储器，还用于存储所述目标调整信息与第一子载波间隔的对应关系，所述第一子载波间隔为所述终端设备采用的子载波间隔，所述存储器与所述通信接口和所述处理器耦合；
    所述处理器，具体用于根据所述存储器存储的目标调整信息与第一子载波间隔的对应关系以及所述通信接口获取到的所述TA，调整上行发送时间。
  20. 根据权利要求18所述的终端设备，其特征在于，所述目标调整信息为第二子载波间隔对应的上行发送时间的调整时间，所述处理器，具体用于，
    所述终端设备的子载波间隔为第三子载波间隔时，根据所述第三子载波间隔和所述第二子载波间隔的预设关系确定第一时间，所述第一时间为所述第三子载波间隔对应的上行发送时间的调整时间；
    根据所述第一时间和所述TA调整上行发送时间。
  21. 根据权利要求18至20任一项所述的终端设备，其特征在于，
    所述通信接口，具体用于设备接收系统信息块SIB1消息，所述SIB1消息中携带所述目标调整信息。
  22. 根据权利要求18至20任一项所述的终端设备，其特征在于，
    所述通信接口，具体用于接收下行控制信息DCI消息，所述DCI消息中携带所述目标调整信息。
  23. 根据权利要求18至20任一项所述的终端设备，其特征在于，
    所述通信接口，具体用于接收随机接入响应消息msg2，所述msg2消息中包括循环冗余校验CRC，所述CRC采用随机接入无线网络临时标识RA-RNTI和所述目标调整信息进行加扰；
    所述处理器，还用于对所述CRC执行解扰操作，获取所述目标调整信息。
  24. 根据权利要求18至20任一项所述的终端设备，其特征在于，
    所述通信接口，具体用于接收系统信息块SIB1消息，所述SIB1消息中携带第一目标调整信息；
    所述通信接口，具体用于接收下行控制信息DCI消息，所述DCI消息中携带第二目标调整信息；
    所述处理器，具体用于根据所述第一目标调整信息和所述第二目标调整信息以及所述TA，调整上行发送时间。
  25. 根据权利要求18所述的终端设备，其特征在于，
    所述通信接口，具体用于获取物理小区标识PCI，所述PCI与夹角α绑定，所述夹角α为小区与卫星之间的水平夹角；
    所述处理器，还用于根据获取到的夹角α得到所述目标调整信息。
  26. 根据权利要求18所述的终端设备，其特征在于，
    所述通信接口，具体用于接收卫星发送的广播消息，所述广播消息中携带了所述卫星的位置信息；
    所述处理器，还用于根据自身的位置信息以及卫星的位置信息按照预设的公式计算出所述目标调整信息。
  27. 根据权利要求18至26任一项所述的终端设备，其特征在于，
    所述处理器，还用于所述通信接口接收第一次调度传输的消息msg3之后，等待预设时间启动第一定时器，所述第一定时器用于监控竞争解决消息msg4。
  28. 根据权利要求18至27任一项所述的终端设备，其特征在于，所述存储器集成在所述处理器中。
  29. 一种网络设备，其特征在于，包括：
    存储器，用于存储计算机可读指令；
    处理器，用于执行所述存储器中的计算机可读指令从而生成第一消息和第二消息，所述第一消息中携带目标调整信息，所述第二消息中携带时间提前量TA，所述目标调整信息和所述TA用于终端设备调整上行发送时间：
    还包括，与所述存储器耦合的通信接口，用于执行以下操作：
    发送所述第一消息；
    发送所述第二消息。
  30. 根据权利要求29所述的网络设备，其特征在于，
    所述存储器，还用于存储目标调整信息与子载波间隔的对应关系，所述对应关系还存储在所述终端设备中。
  31. 根据权利要求29所述的网络设备，其特征在于，所述目标调整信息为目标子载波间隔对应的上行发送时间的调整信息。
  32. 根据权利要求29至31任一项所述的网络设备，其特征在于，
    所述通信接口，具体用于发送系统信息块SIB1消息，所述SIB1消息中携带所述目标调整信息。
  33. 根据权利要求29至31任一项所述的网络设备，其特征在于，
    所述通信接口，具体用于发送下行控制信息DCI消息，所述DCI消息中携带所述目标调整信息。
  34. 根据权利要求29至31任一项所述的网络设备，其特征在于，
    所述通信接口，具体用于发送随机接入响应消息msg2，所述msg2消息中包括循环冗余校验CRC，所述CRC采用随机接入无线网络临时标识RA-RNTI和所述目标调整信息进行加扰。
  35. 根据权利要求29至31任一项所述的网络设备，其特征在于，所述网络设备包括 第一网络设备和第二网络设备，其中第一网络设备包括第一通信接口，第二网络设备包括第二通信接口，其中，
    第一通信接口，具体用于发送系统信息块SIB1消息，所述SIB1消息中携带第一目标调整信息；
    第二通信接口，具体用于发送下行控制信息DCI消息，所述DCI消息中携带第二目标调整信息。
  36. 根据权利要求29至35任一项所述的网络设备，其特征在于，所述存储器集成在所述处理器中。
  37. 一种通信系统，其特征在于，所述通信系统包括终端设备和网络设备，其中，
    所述终端设备为权利要求1至10中任一项所述的终端设备；
    所述网络设备为权利要求11至17中任一项所述的网络设备。
  38. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储指令，当所述指令在计算机装置上运行时，使得所述计算机装置执行如权利要求1至10任一所述的方法。
  39. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储指令，当所述指令在计算机装置上运行时，使得所述计算机装置执行如权利要求11至17任一所述的方法。
  40. 一种计算机程序产品，当其在计算机上运行时，使得计算机可以执行如权利要求1至10任一所述的方法。
  41. 一种计算机程序产品，当其在计算机上运行时，使得计算机可以执行如权利要求11至17任一所述的方法。
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