WO2021109816A1 - 随机接入前导的传输方法、装置及存储介质 - Google Patents

随机接入前导的传输方法、装置及存储介质 Download PDF

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Publication number
WO2021109816A1
WO2021109816A1 PCT/CN2020/128082 CN2020128082W WO2021109816A1 WO 2021109816 A1 WO2021109816 A1 WO 2021109816A1 CN 2020128082 W CN2020128082 W CN 2020128082W WO 2021109816 A1 WO2021109816 A1 WO 2021109816A1
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Prior art keywords
random access
access preamble
doppler
coverage area
sub
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PCT/CN2020/128082
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English (en)
French (fr)
Inventor
王晓鲁
罗禾佳
周建伟
徐晨蕾
王斌
李榕
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华为技术有限公司
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Priority to EP20895523.7A priority Critical patent/EP4061078A4/en
Publication of WO2021109816A1 publication Critical patent/WO2021109816A1/zh
Priority to US17/832,880 priority patent/US20220330350A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/01—Reducing phase shift
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • This application relates to the field of communication technology, and in particular to a transmission method, device and storage medium of a random access preamble.
  • terminal equipment In a communication system, terminal equipment usually uses a contention-based random access method to access the network.
  • network equipment broadcasts random access preamble configuration information in units of cells, where the configuration information includes: random access preamble format information and random access preamble time-frequency resource information. Further, the terminal device sends the random access preamble corresponding to the random access preamble format information on the time-frequency resource corresponding to the random access preamble time-frequency resource information according to the received configuration information. Wherein, the lengths of the random access preambles sent by terminal devices located in the same cell in the related art are all the same.
  • the length of the random access preamble sent by the terminal device closer to the network device is the same as the length of the random access preamble sent by the terminal device farther from the network device, which will result in a waste of time and frequency. Resources.
  • the embodiments of the present application provide a random access preamble transmission method, device, and storage medium, which improve the use efficiency of time-frequency resources.
  • an embodiment of the present application provides a random access preamble transmission method, including:
  • the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device determine the target random access preamble format information corresponding to the target sub-coverage area; wherein, the preset coverage area is composed of one or more beams ,
  • the preset coverage area includes: at least two sub-coverage areas;
  • the target time-frequency resource corresponding to the target random access preamble time-frequency resource information send the random access preamble corresponding to the target random access preamble format information to the network device, where the target random access preamble time-frequency resource
  • the information is random access preamble time-frequency resource information corresponding to the target random access preamble format information.
  • the terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device from at least two random access preamble format information sent by the network device.
  • Target random access preamble format information corresponding to the sub-coverage area.
  • the terminal device sends the target random access preamble format information corresponding to the target random access preamble format information to the network device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information Random access preamble.
  • any terminal device in the embodiment of the present application can use the random access preamble format information corresponding to the target sub-coverage area to send random access according to the target sub-coverage area to which it belongs in the preset coverage area of the network device.
  • the preamble makes the length of the random access preamble sent by the terminal device closer to the network device shorter, and the longer the length of the random access preamble sent by the terminal device farther away from the network device, which can save money Transmit the time-frequency resource of the random access preamble.
  • the target sub-coverage area is associated with the Doppler information of the location where the terminal device belongs and the acquired Doppler reference information; wherein, the at least two sub-coverage areas are based on the Doppler information. Divided by reference information.
  • the Doppler reference information includes: at least one Doppler threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler change rate Threshold, where different Doppler rate of change thresholds correspond to different sub-coverage areas.
  • the Doppler reference information includes: the at least one Doppler threshold, correspondingly, the Doppler information includes: Doppler value; and/or,
  • the Doppler reference information includes the at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value.
  • the method before the target random access preamble format information corresponding to the target sub-coverage area is determined according to the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device, the method further include:
  • the method before the target random access preamble format information corresponding to the target sub-coverage area is determined according to the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device, the method further include:
  • the Doppler information is determined according to the downlink signal sent by the network device.
  • the determining the target random access preamble format information corresponding to the target sub-coverage area according to the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device includes:
  • mapping information between the preset sub-coverage area and the random access preamble format information determine the target random access preamble format information corresponding to the target sub-coverage area from at least two pieces of obtained random access preamble format information; where ,
  • the mapping information between the preset sub-coverage area and the random access preamble format information includes: the mapping information between the target sub-coverage area and the target random access preamble format information.
  • mapping information between the foregoing preset sub-coverage area and the random access preamble format information in the terminal device may be preset by the system or preset by the foregoing network device; of course, it may also be obtained in other ways Yes, this is not limited in the embodiments of this application.
  • the method before the target random access preamble format information corresponding to the target sub-coverage area is determined according to the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device, the method further include:
  • the random access preamble configuration information includes: the at least two random access preamble format information, and the random access preamble corresponding to the random access preamble format information Time-frequency resource information.
  • the random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is the same as that of the sub-coverage area.
  • the distance between the area and the network device is in a positive relationship, or it can be understood as: the longer the distance between any sub-coverage area and the network device, the random access indicated by the random access preamble format information corresponding to the sub-coverage area The longer the length of the incoming preamble.
  • the target random access preamble format information includes at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • an embodiment of the present application provides a random access preamble transmission method, including:
  • the random access preamble configuration information includes: at least two random access preamble format information, and the random access preamble corresponding to the random access preamble format information Time-frequency resource information;
  • the Doppler reference information is used to indicate that the preset coverage area of the network device is divided into at least two sub-coverage areas; the preset coverage area is composed of one or more beams;
  • the target random access preamble format information corresponding to the random access preamble is one of the at least two random access preamble format information Format information, the target random access preamble format information is associated with the target sub-coverage area to which the terminal device belongs in the at least two sub-coverage areas; the target random access preamble time-frequency resource information corresponding to the target time-frequency resource is at least Two random access preamble time-frequency resource information corresponding to the target random access preamble format information in the random access preamble time-frequency resource information.
  • the network device sends random access preamble configuration information and Doppler reference information to a terminal device, so that the terminal device can, after receiving the foregoing random access preamble configuration information and Doppler reference information, be able to
  • the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device is determined according to the above-mentioned Doppler reference information, and from at least two random access preamble format information in the above-mentioned random access preamble configuration information Determine the target random access preamble format information corresponding to the target sub-coverage area.
  • the network device receives the target random access preamble format sent by the terminal device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information.
  • the random access preamble corresponding to the message can be seen that the network device in the embodiment of the present application can receive the random access preamble format information corresponding to the target sub-coverage area of any terminal device according to the target sub-coverage area it belongs to in the preset coverage area of the network device.
  • the sent random access preamble makes the length of the random access preamble sent by the terminal device closer to the network device shorter, and the longer the length of the random access preamble sent by the terminal device farther away from the network device, Therefore, time-frequency resources for transmitting the random access preamble can be saved.
  • the target sub-coverage area is associated with the Doppler information of the location where the terminal device belongs and the Doppler reference information.
  • the Doppler reference information includes: at least one Doppler threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler change rate Threshold, where different Doppler rate of change thresholds correspond to different sub-coverage areas.
  • the Doppler reference information includes: at least one Doppler threshold, correspondingly, the Doppler information includes: Doppler value; and/or,
  • the Doppler reference information includes the at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value.
  • the random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is the same as that of the sub-coverage area.
  • the distance between the coverage area and the network device has a positive relationship.
  • the target random access preamble format information includes at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • an embodiment of the present application provides a terminal device, including:
  • the processing module is used to determine the target random access preamble format information corresponding to the target sub-coverage area according to the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device; wherein, the preset coverage area consists of one Or composed of multiple beams, the preset coverage area includes: at least two sub-coverage areas;
  • the sending module is used to send the random access preamble corresponding to the target random access preamble format information to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information, wherein the target random access preamble
  • the incoming preamble time-frequency resource information is random access preamble time-frequency resource information corresponding to the target random access preamble format information.
  • the target sub-coverage area is associated with the Doppler information of the location where the terminal device belongs and the acquired Doppler reference information; wherein, the at least two sub-coverage areas are based on the Doppler information. Divided by reference information.
  • the Doppler reference information includes: at least one Doppler threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler change rate Threshold, where different Doppler rate of change thresholds correspond to different sub-coverage areas.
  • the Doppler reference information includes: the at least one Doppler threshold, correspondingly, the Doppler information includes: Doppler value; and/or,
  • the Doppler reference information includes the at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value.
  • the terminal device further includes:
  • the receiving module is used to receive the Doppler reference information sent by the network device.
  • processing module is also used to:
  • the Doppler information is determined according to the downlink signal sent by the network device.
  • the processing module is specifically used for:
  • mapping information between the preset sub-coverage area and the random access preamble format information determine the target random access preamble format information corresponding to the target sub-coverage area from at least two pieces of obtained random access preamble format information; where ,
  • the mapping information between the preset sub-coverage area and the random access preamble format information includes: the mapping information between the target sub-coverage area and the target random access preamble format information.
  • the terminal device further includes:
  • the receiving module is configured to receive random access preamble configuration information sent by the network device; wherein, the random access preamble configuration information includes: the at least two random access preamble format information, and the random access preamble format information corresponding Random access preamble time-frequency resource information.
  • the random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is the same as that of the sub-coverage area.
  • the distance between the area and the network device has a positive relationship.
  • the target random access preamble format information includes at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • an embodiment of the present application provides a network device, including:
  • the sending module is used to send random access preamble configuration information and Doppler reference information; wherein, the random access preamble configuration information includes: at least two random access preamble format information, and the random access preamble format information corresponding The random access preamble time-frequency resource information of the random access; the Doppler reference information is used to indicate that the preset coverage area of the network device is divided into at least two sub-coverage areas; the preset coverage area is composed of one or more beams;
  • the receiving module is configured to receive the random access preamble sent by the terminal equipment on the target time-frequency resource; wherein the target random access preamble format information corresponding to the random access preamble is one of the at least two random access preamble format information A random access preamble format information, the target random access preamble format information is associated with the target sub-coverage area to which the terminal device belongs in the at least two sub-coverage areas; the target random access preamble time corresponding to the target time-frequency resource
  • the frequency resource information is at least two random access preamble time-frequency resource information corresponding to the target random access preamble format information in the random access preamble time-frequency resource information.
  • the target sub-coverage area is associated with the Doppler information of the location where the terminal device belongs and the Doppler reference information.
  • the Doppler reference information includes: at least one Doppler threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler change rate Threshold, where different Doppler rate of change thresholds correspond to different sub-coverage areas.
  • the Doppler reference information includes: at least one Doppler threshold, correspondingly, the Doppler information includes: Doppler value; and/or,
  • the Doppler reference information includes the at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value.
  • the random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is the same as that of the sub-coverage area.
  • the distance between the coverage area and the network device has a positive relationship.
  • the target random access preamble format information includes at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • an embodiment of the present application provides a communication device, including a processor and a communication interface, the communication interface is used to receive data to be processed and output processed data, the processor is used to perform such as The method described in the foregoing first aspect or any implementation manner of the first aspect obtains the processed data.
  • the communication device further includes a memory for storing program instructions.
  • program instructions When the program instructions are executed by the processor, the method described in the first aspect or any implementation manner of the first aspect is carried out.
  • an embodiment of the present application provides a communication device, including a logic circuit, an input interface, and an output interface, where:
  • the input interface is used to obtain the data to be processed
  • the logic circuit is used to execute the method described in the first aspect or any implementation manner of the first aspect on the data to be processed to obtain the processed data;
  • the output interface is used to output the processed data.
  • an embodiment of the present application provides a chip, including the communication device described in any implementation manner of the fifth aspect or the sixth aspect.
  • an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium is used to store a computer program, and the computer program is used to implement the above-mentioned first aspect or any implementation manner of the first aspect Methods.
  • an embodiment of the present application provides a communication device, including a processor and a communication interface, the communication interface is used to receive data to be processed and output processed data, the processor is used to perform such as The method described in the foregoing second aspect or any implementation manner of the second aspect obtains the processed data.
  • the communication device further includes a memory for storing program instructions.
  • program instructions When the program instructions are executed by the processor, the method described in the second aspect or any implementation manner of the second aspect is carried out.
  • an embodiment of the present application provides a communication device, including a logic circuit, an input interface, and an output interface, where:
  • the input interface is used to obtain the data to be processed
  • the logic circuit is used to execute the method described in the second aspect or any implementation manner of the second aspect for the data to be processed to obtain the processed data;
  • the output interface is used to output the processed data.
  • an embodiment of the present application provides a chip, including the communication device described in any implementation manner of the ninth aspect or the tenth aspect.
  • an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium is used to store a computer program, and the computer program is used to implement the above-mentioned second aspect or any implementation manner of the second aspect. The method described.
  • FIG. 1 is a schematic diagram of a communication system in a terrestrial communication scenario provided by an embodiment of the application;
  • FIG. 2 is a schematic diagram of a communication system in an NTN communication scenario provided by an embodiment of the application;
  • Figure 3 is a schematic diagram of a contention-based random access process provided by related technologies
  • FIG. 4 is a schematic diagram of the division of the coverage area of LEO satellite equipment provided by an embodiment of the application;
  • FIG. 5 is a schematic flowchart of a random access preamble transmission method provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram 1 of the division of the coverage area of the network equipment provided by an embodiment of the application.
  • FIG. 7 is a second schematic diagram of the division of the coverage area of the network device provided by the embodiment of the application.
  • FIG. 8 is a third schematic diagram of the division of the coverage area of the network device provided by the embodiment of the application.
  • FIG. 9 is a schematic flowchart of a random access preamble transmission method provided by another embodiment of this application.
  • FIG. 10 is a schematic flowchart of a random access preamble transmission method provided by another embodiment of this application.
  • FIG. 11 is a schematic flowchart of a random access preamble transmission method provided by another embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • FIG. 14 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • FIG. 15 is a schematic diagram of the hardware structure of a communication device provided by another embodiment of the application.
  • the random access preamble sending method, receiving method, device, and storage medium provided in the embodiments of the present application can be applied to terrestrial communication scenarios, and can also be applied to non-terrestrial networks (non-terrestrial networks, NTN) communication scenarios; of course, It can also be applied to other communication scenarios, which is not limited in the embodiment of the present application.
  • NTN non-terrestrial networks
  • Fig. 1 is a schematic diagram of a communication system in a terrestrial communication scenario provided by an embodiment of the application.
  • the communication system of the terrestrial communication scenario may include but is not limited to: a network device 10 and at least one terminal device (for ease of drawing, the terminal device 11 and the terminal device 12 are shown as examples in FIG. 1); , The distance between the terminal device 11 and the network device 10 is smaller than the distance between the terminal device 12 and the network device 10.
  • the communication system in the terrestrial communication scenario may also include other devices, which are not limited in the embodiment of the present application.
  • the communication system of the above terrestrial communication scenario may be a base station access system of a 2G network (that is, the RAN includes a base station and a base station controller), or may be a base station access system of a 3G network (that is, the RAN includes a base station and an RNC). ), or may be a base station access system of a 4G network (that is, the RAN includes eNB and RNC), or may be a base station access system of a fifth-generation mobile communication technology (5th-generation, 5G) network, or may be a future network Base station access system, etc.
  • 5G fifth-generation mobile communication technology
  • the foregoing network device 10 may include, but is not limited to: a base station, and a transmission reception point (TRP).
  • a base station also known as a radio access network (RAN) device, is a device that connects a terminal (or terminal device) to a wireless network, and can be a global system of The base transceiver station (BTS) in mobile communication (GSM) or code division multiple access (CDMA) can also be the base station (WCDMA) in wideband code division multiple access (WCDMA).
  • BTS base transceiver station
  • GSM mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • nodeB nodeB, NB
  • an evolved base station evolutional node B, eNB or eNodeB
  • LTE long term evolution
  • a relay station or access point or a base station (gNodeB, gNB) in a 5G network , Or the base station in the future network, etc., are not limited here.
  • the above-mentioned terminal device 11 and/or terminal device 12 may be a wireless terminal or a wired terminal.
  • the wireless terminal may be a device that provides voice and/or other service data connectivity to the user, a handheld device with a wireless connection function, or a connection Other processing equipment to the wireless modem.
  • a wireless terminal can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal. For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • wearable devices computing devices, other processing devices connected to wireless modems, mobile phones (mobile phones), tablets, notebook computers, palmtop computers, mobile Internet devices (MID), machine-type communication terminals, Virtual reality (VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, and remote medical surgery
  • Wireless terminals in smart grids wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes.
  • the above-mentioned wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, and a remote terminal.
  • Access terminal access terminal
  • user terminal user terminal
  • user agent user agent
  • user equipment user device or user equipment, UE
  • Fig. 2 is a schematic diagram of a communication system in an NTN communication scenario provided by an embodiment of the application.
  • the communication system of the NTN communication scenario may include but is not limited to: a network device 20 and at least one terminal device (for ease of drawing, the terminal device 21 and the terminal device 22 are shown as examples in FIG. 2); , The distance between the terminal device 21 and the network device 20 is smaller than the distance between the terminal device 22 and the network device 20.
  • the communication system in the NTN communication scenario may also include other devices, which are not limited in the embodiment of the present application.
  • the communication system of the aforementioned NTN communication scenario may include, but is not limited to, a mobile satellite communication system in satellite communication.
  • the network device 20 may include, but is not limited to, satellite devices, such as low earth orbit (LEO) satellite devices, LEO satellite devices that have wireless transceiver functions, and LEO satellite devices Chips, non-geostationary earth (orbit, NGEO) communication satellite equipment, equipment with wireless transceiver function in NGEO communication satellite equipment, or equipment with wireless transmission and reception functions in NGEO communication satellite equipment, or NGEO communication satellite equipment installed in Chip in a device with wireless transceiver function.
  • satellite devices such as low earth orbit (LEO) satellite devices, LEO satellite devices that have wireless transceiver functions, and LEO satellite devices Chips, non-geostationary earth (orbit, NGEO) communication satellite equipment, equipment with wireless transceiver function in NGEO communication satellite equipment, or equipment with wireless transmission and reception functions in NGEO communication satellite equipment, or NGEO communication satellite equipment installed in Chip in a device with wireless transceiver function.
  • satellite devices such as low earth orbit (LEO) satellite devices, LEO satellite devices that have
  • the aforementioned terminal device 21 and/or terminal device 22 may include, but is not limited to: the aforementioned mobile terminal, a relay station, or a base station in the aforementioned terrestrial communication scenario.
  • the above-mentioned satellite equipment may provide the above-mentioned terminal equipment 21 and the terminal equipment 22 with communication services, and the above-mentioned terminal equipment 21 and the terminal equipment 22 serve as relay stations to provide the above-mentioned communication services to other equipment connected thereto.
  • network devices involved in the embodiments of the present application may also include devices with network functions in device-to-device (D2D) communication.
  • terminal devices may also include devices with receiving functions in D2D communication. Functional equipment.
  • the execution subject of the method on the network device side may be any of the above-mentioned network devices, or a device in any of the above-mentioned network devices (it should be noted that, in the embodiments provided in this application, the network device is taken as an example To describe).
  • the device in the network device may be a chip system, a circuit, or a module, etc., which is not limited in this application.
  • the execution subject of the terminal device side method can be any of the above-mentioned terminal devices, or a device in any of the above-mentioned terminal devices (it should be noted that the terminal device is taken as an example in the embodiments provided in this application) To describe).
  • the device in the terminal device may be a chip system, a circuit, or a module, etc., which is not limited in this application.
  • the aforementioned terminal devices or network devices involved in this application may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the random access preamble involved in the embodiments of the present application may include, but is not limited to: cyclic prefix (CP), sequence (sequence), and guard time (GT).
  • CP cyclic prefix
  • sequence sequence
  • GT guard time
  • CP cyclic prefix
  • GT guard time
  • the CP length of the random access preamble is less than or equal to 684.37us.
  • the diameter of each beam (beam) is large, and the round-trip delay difference in the beam is much larger than the round-trip delay in the terrestrial communication scenario.
  • the length of the CP in the random access preamble is greater than the maximum
  • the round-trip delay is poor, and the length of the sequence and the length of the GT are not shorter than the length of the CP. Therefore, the total length of the random access preamble in the NTN communication scenario is much greater than the total length of the random access preamble in the terrestrial communication scenario. Therefore, sending the random access preamble in the NTN communication scenario will occupy more time-frequency resources.
  • the maximum round-trip delay difference in the beam is 1.86ms, that is, the length of the CP in the random access preamble is at least It is 1.86ms. It can be seen that the length of the CP in the LEO satellite communication scenario is 2.74 times the length of the CP in the terrestrial communication scenario.
  • the random access time domain resource allocated to the random access preamble in the LEO satellite communication scenario is at least 5.58ms, while in the terrestrial communication scenario The longest random access time domain resource allocated to the random access preamble is 3.51 ms.
  • FIG. 3 is a schematic diagram of a contention-based random access process provided by related technologies. As shown in Figure 3, the contention-based random access process includes:
  • Step S301 The network device broadcasts random access preamble configuration information in units of cells, where the configuration information includes: random access preamble format information and random access preamble time-frequency resource information.
  • Step S302 According to the received configuration information, the terminal device sends the random access preamble corresponding to the random access preamble format information on the time-frequency resource corresponding to the random access preamble time-frequency resource information. Wherein, the lengths of the random access preambles sent by terminal devices located in the same cell are all the same.
  • Step S303 After receiving the random access preamble, the network device sends a random access response (RAR) to the terminal device, where the RAR can carry the transmission delay estimated by the network device by detecting the preamble.
  • RAR random access response
  • Step S304 After receiving the RAR, the terminal device sends a message carrying a contention resolution identity of the terminal device to the network device to resolve the competition.
  • Step S305 The aforementioned network equipment and terminal equipment complete contention resolution.
  • the round-trip delay is small
  • the length of the random access preamble sent by it is different from that of the terminal device that is far away from the network device (the round-trip delay).
  • the random access preambles sent have the same length, which will result in wasting time-frequency resources for sending the random access preamble.
  • the beam diameter will be much larger than the cell radius of terrestrial communication scenarios. If the lengths of the random access preambles sent by the terminal devices in the same beam are all the same, the time-frequency resources for sending the random access preambles will be wasted for the terminal devices that are closer to the satellite device (with a small round-trip delay difference).
  • the beam involved in the embodiments of this application refers to the coverage area of the electromagnetic wave emitted by the antenna in the network device; of course, it can also be called other names, for example, cell, bandwidth part (bandwidth part, BWP) corresponds to area.
  • BWP bandwidth part
  • the preset coverage area involved in the embodiments of the present application may be composed of one or more beams, and the preset coverage area may include but is not limited to: at least two sub-coverage areas divided according to Doppler reference information.
  • the Doppler reference information involved in the embodiments of the present application may include, but is not limited to: at least one Doppler (Doppler) threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler threshold.
  • Doppler Doppler
  • Fig. 4 is a schematic diagram of the division of the coverage area of the LEO satellite equipment provided by the embodiment of the application. As shown in Fig. 4, it is assumed that the LEO satellite equipment is directly above the latitude and longitude (0,0) and moves from west to east along the equator.
  • the dotted line in Figure 4 represents the Doppler threshold contour line in the coverage area of the LEO satellite device, the solid line represents the Doppler change rate threshold contour line, and the black straight line represents the motion trajectory of the LEO satellite device on the surface of the earth.
  • the Doppler threshold contour line and the Doppler rate of change threshold contour line divide the preset coverage area into 12 sub-coverage areas.
  • the random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is different from the difference between the sub-coverage area and the LEO satellite equipment.
  • the distance between them is in a positive relationship, or it can be understood as: the longer the distance between any sub-coverage area and the LEO satellite device, the longer the random access preamble length indicated by the random access preamble format information corresponding to the sub-coverage area long.
  • the length of the random access preamble indicated by the random access preamble format information corresponding to sub-coverage area 2 is greater than the random access indicated by the random access preamble format information corresponding to sub-coverage area 6 The length of the preamble.
  • the Doppler threshold contour may divide the aforementioned preset coverage area into multiple sub-coverage areas; or, if Considering the Doppler rate of change threshold contour, and ignoring the Doppler threshold contour, the Doppler rate of change threshold contour may divide the preset coverage area into multiple sub-coverage areas.
  • the aforementioned preset coverage area may also be divided into at least two sub-coverage areas in other ways.
  • the Doppler information involved in the embodiments of this application corresponds to the aforementioned Doppler reference information.
  • the Doppler reference information includes at least one Doppler threshold, correspondingly, the Doppler information includes a Doppler value.
  • the Doppler reference information includes at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: a Doppler rate of change value.
  • the Doppler reference information includes: at least one Doppler threshold and at least one Doppler change rate threshold, correspondingly, the Doppler information includes: Doppler value and Doppler change Rate value.
  • the aforementioned Doppler values involved in the embodiments of the present application may include, but are not limited to, at least one of the following: Doppler shift caused by the relative motion between the network device and the terminal device, and the frequency generated by the crystal oscillator or local oscillator of the network device. Offset, the frequency offset caused by the crystal oscillator or local oscillator of the terminal device.
  • the aforementioned Doppler change rate value involved in the embodiment of the present application may be obtained according to the aforementioned Doppler value change rate.
  • Any random access preamble format information involved in the embodiments of the present application may include but is not limited to at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • the random access preamble transmission method, device, and storage medium provided by the embodiments of the present application send random access preamble configuration information and Doppler reference information to terminal equipment through a network device, where the random access preamble configuration information can be Including but not limited to: at least two random access preamble format information, and random access preamble time-frequency resource information corresponding to each random access preamble format information; the above-mentioned Doppler reference information is used to indicate the preamble of the network device It is assumed that the coverage area is divided into at least two sub-coverage areas.
  • the terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device according to the above-mentioned Doppler reference information, and determines from the above-mentioned at least two random access preamble format information and The target random access preamble format information corresponding to the target sub-coverage area. Then, the terminal device sends the target random access preamble format information corresponding to the target random access preamble format information to the network device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information Random access preamble.
  • any terminal device can use the corresponding random access preamble format information to send the random access preamble according to the target sub-coverage area it belongs to in the preset coverage area of the network device, so that the terminal device that is closer to the network device The shorter the length of the random access preamble sent, the longer the length of the random access preamble sent by the terminal device that is farther from the network device, thereby solving the above-mentioned technical problem of wasting time-frequency resources.
  • the terminal device may determine that the terminal device is in the preset coverage area of the network device based on the Doppler information of the location where the terminal device belongs and the Doppler reference information obtained from the network device. The target sub-coverage area to which it belongs.
  • a possible implementation manner if the Doppler reference information includes at least one Doppler threshold, correspondingly, the Doppler information includes a Doppler value, and the terminal device is based on the location of the terminal device.
  • the Pule value and the aforementioned at least one Doppler threshold value determine the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device.
  • the Doppler reference information includes: at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value, then the terminal device according to the terminal The Doppler change rate value of the location where the device belongs and the at least one Doppler change rate threshold value determine the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device.
  • the above-mentioned Doppler reference information includes: at least one Doppler threshold and at least one Doppler rate of change threshold, correspondingly, the above-mentioned Doppler information includes: Doppler value and Doppler value
  • the terminal device determines the terminal device according to the Doppler value, the Doppler rate value, the at least one Doppler threshold value, and the at least one Doppler rate threshold value of the location where the terminal device belongs.
  • FIG. 5 is a schematic flowchart of a random access preamble transmission method provided by an embodiment of this application. As shown in FIG. 5, the method of the embodiment of the present application may include:
  • Step S501 The network device sends random access preamble configuration information and Doppler reference information.
  • the foregoing random access preamble configuration information may include but is not limited to: at least two random access preamble format information, and random access preamble time-frequency resource information corresponding to each random access preamble format information.
  • the length of the random access preamble indicated by different random access preamble format information is different.
  • Any random access preamble format information involved in the embodiments of this application may include but is not limited to at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • the time-frequency resource indicated by the random access preamble time-frequency resource information corresponding to any random access preamble format information is used for the aforementioned terminal device to send the random access preamble indicated by the random access preamble format information.
  • the network device may send the aforementioned random access preamble configuration information and the aforementioned Doppler reference information to the terminal device located in the preset coverage area, so that the terminal device can receive the aforementioned random access preamble configuration information and Doppler reference information.
  • the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device can be determined according to the aforementioned Doppler reference information, and it can be determined from the aforementioned at least two random access preamble format information.
  • the target random access preamble format information corresponding to the target sub-coverage area.
  • the network device may carry the foregoing random access preamble configuration information and Doppler reference information in a system information block (system information block, SIB) for broadcast transmission.
  • SIB system information block
  • the foregoing random access preamble configuration information and Doppler reference information may be carried in the same SIB or in different SIBs.
  • the network device may send the foregoing random access preamble configuration information to the foregoing terminal device by sending a configuration index.
  • the terminal device queries the preset random access preamble configuration table according to the configuration index to obtain the random access preamble configuration information.
  • the network device may send the Doppler reference information to the terminal device by sending a Doppler reference index.
  • the terminal device queries the preset Doppler reference index table according to the Doppler reference index to obtain the aforementioned Doppler reference information.
  • the foregoing preset random access preamble configuration table and preset Doppler reference index table may be preset by the system or preset by the foregoing network equipment; of course, they may also be preset in other ways. This is not limited in the embodiment.
  • the network device may also send the aforementioned random access preamble configuration information and Doppler reference information in other ways, which are not limited in the embodiment of the present application.
  • the aforementioned Doppler reference information is used to indicate that the preset coverage area of the network device is divided into at least two sub-coverage areas, and the preset coverage area is composed of one or more adjacent beams.
  • the aforementioned random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is different from the difference between the sub-coverage area and the network device.
  • the distance between the two is in a positive relationship, or it can be understood as: the longer the distance between any sub-coverage area and the network device, the longer the length of the random access preamble indicated by the random access preamble format information corresponding to the sub-coverage area .
  • the distance between any sub-coverage area and the network device refers to the distance between the point farthest from the network device in the sub-coverage area and the network device.
  • the distance between any sub-coverage area and the network device refers to the distance between the closest point to the network device in the sub-coverage area and the network device.
  • the distance between any sub-coverage area and the network device refers to the distance between the center point of the sub-coverage area and the network device.
  • the distance between any of the aforementioned sub-coverage areas and the network device may also include other meanings, which are not limited in the embodiment of the present application.
  • the aforementioned Doppler reference information may include but is not limited to: at least one Doppler threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler change rate threshold , Where different Doppler rate thresholds correspond to different sub-coverage areas.
  • the Doppler reference information may include but is not limited to: n Doppler thresholds, the n Doppler thresholds are used to divide the preset coverage area of the network device into n +1 sub-coverage areas, where n is an integer greater than 0, and different Doppler thresholds correspond to different sub-coverage areas.
  • Figure 6 is a schematic diagram 1 of the division of the coverage area of a network device provided by an embodiment of this application.
  • the network device is a satellite moving from west to east along the equator direction directly above the latitude and longitude (0,0).
  • Equipment the orbital height of the satellite equipment is 1200km, and the minimum elevation angle is 10 degrees.
  • the dotted line in Figure 6 represents the Doppler threshold contour in the coverage area of the satellite device
  • the black straight line represents the projection of the satellite device’s trajectory on the surface of the earth
  • the circle on the black straight line represents the coverage area of the satellite device. Of a preset coverage area.
  • the Doppler reference information can include: Doppler threshold D1 and Doppler threshold D2, the Doppler threshold D1 contour and Doppler threshold D2 contour will be the same as the Doppler threshold D2.
  • the preset coverage area of the device is divided into 3 sub-coverage areas.
  • Table 1 is the mapping information table 1 between preset Doppler information, Doppler reference information, sub-coverage area, and random access preamble format information provided by an embodiment of this application.
  • the Doppler information includes a Doppler value D
  • the Doppler reference information includes a Doppler threshold D1 and a Doppler threshold D2, which are used to divide the aforementioned preset coverage area into sub-coverage areas 1.
  • the distance between the sub-coverage area 1 and the satellite equipment is greater than the distance between the sub-coverage area 2 and the satellite equipment, and the distance between the sub-coverage area 2 and the satellite equipment is greater than the distance between the sub-coverage area 3 and the satellite equipment. The distance between.
  • the length of the random access preamble indicated by the random access preamble format information 1 corresponding to the sub-coverage area 1 is greater than the length of the random access preamble indicated by the random access preamble format information 2 corresponding to the sub-coverage area 2;
  • the length of the random access preamble indicated by the random access preamble format information 2 corresponding to the sub-coverage area 2 is greater than the length of the random access preamble indicated by the random access preamble format information 3 corresponding to the sub-coverage area 3.
  • Table 1 is the mapping information table 1 between preset Doppler information, Doppler reference information, sub-coverage area, and random access preamble format information provided by the embodiments of this application
  • the position where the Pule value D belongs may also belong to the sub-coverage area 1; and/or, if the Pule value D is equal to the Doppler threshold D2, then The position where the Pule value D belongs may also belong to the sub-coverage area 3. It should be noted that the deformation of the "equal sign" in the following Table 2 and Table 3 can also be handled in a similar manner.
  • the length relationship of the random access preamble indicated by the random access preamble format information in Table 1 listed in the above-mentioned implementation manner is just a possible example, and it does not exclude that the adjacent different sub-coverage areas correspond to each other.
  • the random access preamble has the same sequence length.
  • the lengths of the random access preambles indicated by the random access preamble format information corresponding to adjacent sub-coverage area 1 and sub-coverage area 2 in Table 1 are the same.
  • the length of the random access preamble corresponding to the sub-coverage area with a larger distance between the satellite devices is not shorter than the length of the random access preamble corresponding to the sub-coverage area with a smaller distance between the satellite devices.
  • the terminal equipment in the sub-coverage area close to the satellite equipment is less affected by the channel Doppler shift, and can use the random access preamble format information with relatively small sub-carrier spacing (or called it Random access preamble format).
  • the terminal equipment in the sub-coverage area far away from the satellite equipment is greatly affected by the channel Doppler frequency shift, and it is necessary to use a random access preamble format with a large sub-carrier spacing.
  • the larger subcarrier spacing means that the random access preamble occupies less time domain resources. Therefore, when the Doppler frequency shift requirements in different sub-coverage areas for random access preamble sub-carrier spacing are considered, random access preambles corresponding to different sub-coverage areas may have the same sequence length.
  • different numbers of preselected pools of random access preamble root sequences and corresponding time-frequency resources can be allocated to different sub-coverage areas according to factors such as the area size of different sub-coverage areas. For example, a larger number of preselected pools of random access preamble root sequences and a corresponding larger number of time-frequency resources are allocated to a sub-coverage area with a larger area.
  • the embodiment of the present application can configure flexible random access preamble formats that meet performance requirements for different sub-coverage areas, so as to achieve the purpose of optimizing system resource configuration.
  • the Doppler reference information may include but is not limited to: m Doppler rate of change thresholds
  • the m Doppler rate of change thresholds are used to use the preset of the network device
  • the coverage area is divided into m+1 sub-coverage areas, where m is an integer greater than 0, and different Doppler change rate thresholds correspond to different sub-coverage areas.
  • FIG. 7 is a second schematic diagram of the division of the coverage area of the network equipment provided by the embodiment of the application.
  • the network equipment is a satellite moving from west to east along the equator directly above the latitude and longitude (0,0).
  • Equipment the orbital height of the satellite equipment is 1200km, and the minimum elevation angle is 10 degrees.
  • the solid line in Figure 7 represents the Doppler change rate threshold in the coverage area of the satellite device
  • the black straight line represents the projection of the satellite device’s trajectory on the surface of the earth
  • the circle in the middle of Figure 7 represents the coverage area of the satellite device. Of a preset coverage area.
  • the Doppler reference information can include: Doppler rate of change threshold DR1, Doppler rate of change threshold DR2, and Doppler rate of change threshold DR3, then the Doppler rate of change threshold DR1, etc.
  • the high line, the Doppler rate of change threshold DR2 contour, and the Doppler rate of change threshold DR3 contour divide the preset coverage area of the network device into 4 sub-coverage areas.
  • Table 2 is Table 2 of the mapping information between preset Doppler information, Doppler reference information, sub-coverage area, and random access preamble format information provided by the embodiment of the application.
  • the Doppler information includes the Doppler rate of change value DR
  • the Doppler reference information includes the Doppler rate of change threshold DR1, the Doppler rate of change threshold DR2, and the Doppler rate of change threshold.
  • DR3 is used to divide the foregoing preset coverage area into sub-covering area 1, sub-covering area 2, sub-covering area 3, and sub-covering area 4.
  • the distance between the sub-coverage area 1 and the satellite equipment is greater than the distance between the sub-coverage area 2 and the satellite equipment
  • the distance between the sub-coverage area 2 and the satellite equipment is greater than the distance between the sub-coverage area 3 and the satellite equipment
  • the distance between the sub-coverage area 3 and the satellite device is greater than the distance between the sub-coverage area 4 and the satellite device.
  • the length of the random access preamble indicated by the random access preamble format information 1 corresponding to the sub-coverage area 1 is greater than the length of the random access preamble indicated by the random access preamble format information 2 corresponding to the sub-coverage area 2;
  • the length of the random access preamble indicated by the random access preamble format information 2 corresponding to the sub-coverage area 2 is greater than the length of the random access preamble indicated by the random access preamble format information 3 corresponding to the sub-coverage area 3;
  • the length of the random access preamble indicated by the corresponding random access preamble format information 3 is greater than the length of the random access preamble indicated by the random access preamble format information 4 corresponding to the sub-coverage area 4.
  • Table 2 is the mapping information between preset Doppler information, Doppler reference information, sub-coverage area, and random access preamble format information provided by the embodiments of this application.
  • the position of the Pule rate of change value DR may also belong to the sub-coverage area 1; if the value of the Pule rate of change DR is equal to the Doppler rate of change. If the value of the Pule change rate DR is equal to the Doppler change rate value DR2, the position where the Pule change rate value DR belongs may also belong to the sub-coverage area 3; and/or, if the Pule change rate value DR is equal to the Doppler change rate value DR3, the Pule change rate The location where the rate value DR belongs may also belong to the sub-coverage area 3.
  • the length relationship of the random access preamble indicated by the random access preamble format information in Table 2 listed in the above-mentioned implementation manner is just a possible example, and it does not exclude that the adjacent different sub-coverage areas correspond to each other.
  • the random access preamble has the same sequence length.
  • the lengths of the random access preambles indicated by the random access preamble format information corresponding to the adjacent sub-coverage area 2 and the sub-coverage area 3 in the foregoing Table 2 are the same.
  • the length of the random access preamble corresponding to the sub-coverage area with a larger distance between the satellite devices is not shorter than the length of the random access preamble corresponding to the sub-coverage area with a smaller distance between the satellite devices.
  • the terminal equipment in the sub-coverage area close to the satellite equipment is less affected by the channel Doppler shift, and the random access preamble format with relatively small sub-carrier spacing can be used.
  • the terminal equipment in the sub-coverage area far away from the satellite equipment is greatly affected by the channel Doppler frequency shift, and it is necessary to use a random access preamble format with a large sub-carrier spacing.
  • the larger subcarrier spacing means that the random access preamble occupies less time domain resources. Therefore, when the Doppler frequency shift requirements in different sub-coverage areas for random access preamble sub-carrier spacing are considered, random access preambles corresponding to different sub-coverage areas may have the same sequence length.
  • different numbers of preselected pools of random access preamble root sequences and corresponding time-frequency resources can be allocated to different sub-coverage areas according to factors such as the area size of different sub-coverage areas. For example, a larger number of preselected pools of random access preamble root sequences and a corresponding larger number of time-frequency resources are allocated to a sub-coverage area with a larger area.
  • the embodiment of the present application can configure flexible random access preamble formats that meet performance requirements for different sub-coverage areas, so as to achieve the purpose of optimizing system resource configuration.
  • the Doppler reference information includes: n Doppler thresholds and m Doppler change rate thresholds
  • the n Doppler thresholds and m Doppler change rates The threshold is used to divide the preset coverage area of the aforementioned network device into (n+1)*(m+1) sub-coverage areas, where different Doppler thresholds and Doppler change rate thresholds correspond to different sub-coverage areas .
  • Figure 8 is the third schematic diagram of the division of the coverage area of the network equipment provided by the embodiments of the application. As shown in Figure 8, it is assumed that the network equipment is a satellite moving from west to east along the equator at the latitude and longitude (0,0). Equipment, the orbital height of the satellite equipment is 1200km, and the minimum elevation angle is 10 degrees.
  • the dotted line in Fig. 8 represents the Doppler threshold contour line in the coverage area of the satellite device, the solid line represents the Doppler change rate threshold contour line, and the black straight line represents the projection of the satellite device’s trajectory on the surface of the earth.
  • the circle in the upper left part of FIG. 8 represents a preset coverage area in the coverage area of the satellite device.
  • the Doppler reference information includes: Doppler threshold D1, Doppler rate of change threshold DR1, and Doppler rate of change threshold DR2
  • the Doppler threshold D1 contour, Doppler threshold The contour lines of the Le change rate threshold DR1 and the Doppler change rate threshold DR2 are used to divide the preset coverage area of the aforementioned network device into 6 sub-coverage areas.
  • Table 3 is Table 3 of the mapping information between preset Doppler information, Doppler reference information, sub-coverage area, and random access preamble format information provided by the embodiment of the application.
  • Doppler information includes Doppler value D and Doppler rate of change value DR
  • Doppler reference information includes Doppler threshold D1
  • Doppler rate of change threshold DR1 and Doppler
  • the Le change rate threshold DR2 is used to divide the aforementioned preset coverage area into sub-covering area 1, sub-covering area 2, sub-covering area 3, sub-covering area 4, sub-covering area 5, and sub-covering area 6.
  • the distance between the sub-coverage area 2 and the satellite device is greater than the distance between the sub-coverage area 3 and the satellite device.
  • the length of the random access preamble indicated by the random access preamble format information 2 corresponding to the sub-coverage area 2 is greater than the length of the random access preamble indicated by the random access preamble format information 3 corresponding to the sub-coverage area 3.
  • Table 3 is the mapping information between preset Doppler information, Doppler reference information, sub-coverage area, and random access preamble format information provided by the embodiments of this application.
  • the deformation of the "equal sign" in Table 3 above can be processed in accordance with the deformation of the "equal sign” in Table 1 or Table 2. For example, if the Pule value D is equal to the Doppler threshold value D1, and the Doppler rate of change value DR is equal to the Doppler rate of change value DR1, then the position of the Pule value D and the Doppler rate of change DR is still It can belong to sub-coverage area 1, sub-coverage area 2, or sub-coverage area 4.
  • the length relationship of the random access preamble indicated by the random access preamble format information in Table 3 listed in the foregoing implementation manner is just a possible example, and the random access preambles corresponding to different adjacent sub-coverage areas are not excluded.
  • the access preamble has the same sequence length.
  • the lengths of the random access preambles indicated by the random access preamble format information corresponding to adjacent sub-coverage areas 2 or sub-coverage areas 4 in Table 3 are the same.
  • the length of the random access preamble corresponding to the sub-coverage area with a larger distance between the satellite devices is not shorter than the length of the random access preamble corresponding to the sub-coverage area with a smaller distance between the satellite devices.
  • the terminal equipment in the sub-coverage area close to the satellite equipment is less affected by the channel Doppler shift, and the random access preamble format with relatively small sub-carrier spacing can be used.
  • the terminal equipment in the sub-coverage area far away from the satellite equipment is greatly affected by the channel Doppler frequency shift, and it is necessary to use a random access preamble format with a large sub-carrier spacing.
  • the larger subcarrier spacing means that the random access preamble occupies less time domain resources. Therefore, when the Doppler frequency shift requirements in different sub-coverage areas for random access preamble sub-carrier spacing are considered, random access preambles corresponding to different sub-coverage areas may have the same sequence length.
  • different numbers of preselected pools of random access preamble root sequences and corresponding time-frequency resources can be allocated to different sub-coverage areas according to factors such as the area size of different sub-coverage areas. For example, a larger number of preselected pools of random access preamble root sequences and a corresponding larger number of time-frequency resources are allocated to a sub-coverage area with a larger area.
  • the embodiment of the present application can configure flexible random access preamble formats that meet performance requirements for different sub-coverage areas, so as to achieve the purpose of optimizing system resource configuration.
  • preset coverage area may be divided into sub-coverage areas in other ways, which are not limited in the embodiment of the present application.
  • Step S502 The terminal device determines the target random access preamble format information corresponding to the target sub-coverage area according to the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device.
  • the target sub-coverage area is associated with the Doppler information of the location where the terminal device belongs and the Doppler reference information obtained from the network device.
  • the terminal device may determine the Doppler information of the location to which the terminal device belongs according to the downlink signal sent by the aforementioned network device. For example, the terminal device detects the frequency offset of the frequency point of the downlink signal sent by the network device, and then determines the Doppler information of the location of the terminal device based on the frequency offset, where the downlink signal may include but is not limited to : Synchronization broadcast block (synchronization signal/PBCH block, SSB) signal, or other synchronization signals.
  • Synchronization broadcast block synchronization signal/PBCH block, SSB
  • the terminal device may also determine the Doppler information of the location of the terminal device in other ways, which is not limited in the embodiment of the present application.
  • the terminal device may determine that the terminal device belongs in the preset coverage area of the network device based on the Doppler information of the location where the terminal device belongs and the Doppler reference information obtained from the network device.
  • the target sub-covered area may be determined that the terminal device belongs in the preset coverage area of the network device based on the Doppler information of the location where the terminal device belongs and the Doppler reference information obtained from the network device. The target sub-covered area.
  • a possible implementation manner if the Doppler reference information includes at least one Doppler threshold, correspondingly, the Doppler information includes a Doppler value, and the terminal device is based on the location of the terminal device.
  • the Pule value and the aforementioned at least one Doppler threshold value determine the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device.
  • the Doppler reference information may include: Doppler threshold D1 and Doppler threshold D2, the Doppler threshold D1 contour and Doppler threshold D2, etc.
  • the high line divides the preset coverage area of the aforementioned network device into three sub-coverage areas, and the terminal device determines the Doppler value D according to the Doppler value D, the aforementioned Doppler threshold value D1 and the Doppler threshold value D2 of the location where the terminal device belongs The target sub-coverage area to which the terminal device belongs in the preset coverage area of the aforementioned network device.
  • the terminal device can determine that the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device is Sub coverage area 1. Or, if the Doppler value D of the location where the terminal device belongs is less than or equal to the Doppler threshold D1, and greater than or equal to the Doppler threshold D2, the terminal device can determine that the terminal device is in the preset of the network device The target sub-coverage area to which the coverage area belongs is sub-coverage area 2.
  • the terminal device may determine that the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device is a sub-coverage area. Coverage area 3.
  • the terminal device may randomly select a sub-coverage area from the at least two sub-coverage areas as the target sub-coverage area.
  • the aforementioned terminal device may select a target sub-coverage area from the aforementioned at least two sub-coverage areas according to the length of the random access preamble indicated by the random access preamble format information corresponding to each sub-coverage area, wherein the target sub-coverage area The length of the random access preamble indicated by the random access preamble format information corresponding to the coverage area is the shortest.
  • the aforementioned terminal device may also select a target sub-coverage area from the aforementioned at least two sub-coverage areas in other ways, which is not limited in the embodiment of the present application.
  • the Doppler reference information includes: at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value, then the terminal device according to the terminal The Doppler change rate value of the location where the device belongs and the at least one Doppler change rate threshold value determine the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device.
  • the Doppler reference information may include: Doppler rate of change threshold DR1, Doppler rate of change threshold DR2, and Doppler rate of change threshold DR3, the above Doppler
  • the change rate threshold DR1 contour line, the Doppler change rate threshold DR2 contour line, and the Doppler change rate threshold DR3 contour line divide the preset coverage area of the above-mentioned network device into 4 sub-coverage areas, and the terminal device is based on The Doppler change rate value DR, the Doppler change rate threshold DR1, the Doppler change rate threshold DR2, and the Doppler change rate threshold DR3 of the location to which the terminal device belongs are determined to determine the terminal device’s prediction in the network device. Set the target sub-coverage area to which the coverage area belongs.
  • the terminal device can determine the target to which the terminal device belongs in the preset coverage area of the network device.
  • the sub-covered area is sub-covered area 1.
  • the terminal device can determine that the terminal device is at The target sub-coverage area to which the preset coverage area of the aforementioned network device belongs is sub-coverage area 2.
  • the terminal device can determine that the terminal device is on the network.
  • the target sub-coverage area to which the device's preset coverage area belongs is sub-coverage area 3.
  • the terminal device can determine the target to which the terminal device belongs in the preset coverage area of the network device The sub-covered area is sub-covered area 4.
  • the terminal device may randomly select a sub-coverage area from the at least two sub-coverage areas as the target sub-coverage area.
  • the aforementioned terminal device may select a target sub-coverage area from the aforementioned at least two sub-coverage areas according to the length of the random access preamble indicated by the random access preamble format information corresponding to each sub-coverage area, wherein the target sub-coverage area The length of the random access preamble indicated by the random access preamble format information corresponding to the coverage area is the shortest.
  • the aforementioned terminal device may also select a target sub-coverage area from the aforementioned at least two sub-coverage areas in other ways, which is not limited in the embodiment of the present application.
  • the above-mentioned Doppler reference information includes: at least one Doppler threshold and at least one Doppler rate of change threshold, correspondingly, the above-mentioned Doppler information includes: Doppler value and Doppler value
  • the terminal device determines the terminal device according to the Doppler value, the Doppler rate value, the at least one Doppler threshold value, and the at least one Doppler rate threshold value of the location where the terminal device belongs.
  • the Doppler reference information may include: Doppler threshold D1, Doppler rate of change threshold DR1, and Doppler rate of change threshold DR2, the Doppler threshold D1 The contours, the Doppler rate of change threshold DR1, and the Doppler rate of change threshold DR2 contours divide the preset coverage area of the network device into 6 sub-coverage areas.
  • the terminal device can determine the The target sub-coverage area to which the terminal device belongs in the preset coverage area of the aforementioned network device is sub-coverage area 1. Or, if the Doppler value D of the location to which the terminal device belongs is greater than the Doppler threshold D1, and the Doppler rate of change value DR is greater than the Doppler rate of change threshold DR1, the terminal device can determine that the terminal device The target sub-coverage area to which the foregoing network device belongs in the preset coverage area is sub-coverage area 2.
  • the terminal device can determine that the target sub-coverage area to which the terminal device belongs in the preset coverage area of the aforementioned network device is sub-coverage area 3.
  • the terminal device can determine that the target sub-coverage area to which the terminal device belongs in the preset coverage area of the aforementioned network device is sub-coverage area 4.
  • the terminal device can determine the The target sub-coverage area to which the terminal device belongs in the preset coverage area of the aforementioned network device is sub-coverage area 5. Or, if the Doppler value D of the location to which the terminal device belongs is greater than the Doppler threshold D1, and the Doppler rate of change value DR is less than the Doppler rate of change threshold DR2, the terminal device can determine that the terminal The target sub-coverage area to which the device belongs in the preset coverage area of the aforementioned network device is sub-coverage area 6.
  • the terminal device may randomly select a sub-coverage area from the at least two sub-coverage areas. As the target sub-coverage area.
  • the aforementioned terminal device may select a target sub-coverage area from the aforementioned at least two sub-coverage areas according to the length of the random access preamble indicated by the random access preamble format information corresponding to each sub-coverage area, wherein the target sub-coverage area The length of the random access preamble indicated by the random access preamble format information corresponding to the coverage area is the shortest.
  • the aforementioned terminal device may also select a target sub-coverage area from the aforementioned at least two sub-coverage areas in other ways, which is not limited in the embodiment of the present application.
  • the terminal device receives the aforementioned Doppler reference information sent by the aforementioned network device.
  • the terminal device does not need to receive the above-mentioned Doppler reference information sent by the above-mentioned network device every time before performing the above-mentioned step S502, which can be determined according to specific application scenarios.
  • the terminal device may determine the target corresponding to the target sub-coverage area from the acquired at least two random access preamble format information according to the mapping information between the preset sub-coverage area and the random access preamble format information Random access preamble format information.
  • the terminal device is pre-configured with the mapping information between the preset sub-coverage area and the random access preamble format information, such as the preset sub-coverage area and random access as shown in Table 1 to Table 3 above.
  • the mapping information between the preset sub-coverage area and the random access preamble format information may include, but is not limited to: the above-mentioned target sub-coverage area and the target random access preamble format Mapping information between information. It should be understood that the foregoing mapping information between the preset sub-coverage area and the random access preamble format information may further include: mapping information between other sub-coverage areas and random access preamble format information corresponding to the sub-coverage area.
  • mapping information between the preset sub-coverage area and the random access preamble format information is not limited to a table form, and other expression forms may also be used.
  • mapping information between the foregoing preset sub-coverage area and the random access preamble format information in the terminal device may be preset by the system or preset by the foregoing network device.
  • the foregoing network device may send the mapping information between the foregoing preset sub-coverage area and random access preamble format information to the foregoing terminal device.
  • the foregoing network device may carry the mapping information between the foregoing preset sub-coverage area and random access preamble format information in a system information block (SIB) 1, other system information (OSI), At least one of the broadcast information such as the master information block (MIB) is broadcast or multicast sent to the above-mentioned terminal device.
  • SIB system information block
  • OSI system information
  • MIB master information block
  • the network device can carry the updated mapping information on the RRC Information, downlink control information (DCI), group DCI, media access control (MAC) element (media access control, MAC) at least one of the information is sent to the above-mentioned terminal device, or transmitted with the data or in a separate
  • the allocated physical downlink shared channel (PDSCH) is sent to the above-mentioned terminal device.
  • mapping information between the foregoing preset sub-coverage area and the random access preamble format information in the terminal device may also be obtained in other ways, which is not limited in the embodiment of the present application.
  • the terminal device determines the preset value of the terminal device in the network device according to the Doppler value D of the location where the terminal device belongs, the Doppler threshold value D1, and the Doppler threshold value D2.
  • the target sub-coverage area belonging to the coverage area is sub-coverage area 1 as shown in Table 1, then the terminal device can be based on the mapping between the preset sub-coverage area and random access preamble format information as shown in Table 1 Information, from the obtained random access preamble format information 1 to random access preamble format information 3, the target random access preamble format information corresponding to the target sub-coverage area is determined (such as the random access preamble format in Table 1 above) Information 1).
  • the terminal device is based on the Doppler change rate value DR of the location where the terminal device belongs, the Doppler change rate threshold DR1, the Doppler change rate threshold DR2, and the Doppler change rate
  • the threshold DR3 determines that the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device is the sub-coverage area 2 in the foregoing Table 2, and the terminal device can be based on the preset coverage area as shown in the foregoing Table 2.
  • Preamble format information (such as random access preamble format information 2 in Table 2 above).
  • the terminal device is based on the Doppler value D and the Doppler rate of change value DR of the location where the terminal device belongs, the Doppler threshold D1, the Doppler rate of change threshold DR1, and the Doppler rate of change DR.
  • the Puller change rate threshold DR2 determines that the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device is the sub-coverage area 3 in Table 3 above, and the terminal device can be based on Table 3 above.
  • mapping information between the preset sub-coverage area and the random access preamble format information it is determined from the obtained random access preamble format information 1 to random access preamble format information 6 which corresponds to the target sub-coverage area Target random access preamble format information (such as random access preamble format information 3 in Table 3 above).
  • the terminal device receives the foregoing random access preamble configuration information sent by the foregoing network device; wherein, the random access preamble configuration information includes: the foregoing at least two random access preamble format information, and The random access preamble time-frequency resource information corresponding to each random access preamble format information.
  • the terminal device does not need to receive the foregoing random access preamble configuration information sent by the foregoing network device each time before performing the foregoing step S502, which may be determined according to specific application scenarios.
  • the terminal device may also not need to perform the above steps of determining the target sub-coverage area, and may be based on the mapping information between preset Doppler information, Doppler reference information, and random access preamble format information (for example, the above-mentioned mapping information).
  • the comparison of Doppler information and Doppler reference information shown in Tables 1 to 3, and the corresponding random access preamble format information determine the target random corresponding to the Doppler information of the location of the terminal device Access preamble format information.
  • Step S503 The terminal device sends the random access preamble corresponding to the target random access preamble format information to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information.
  • the terminal device has pre-acquired the foregoing random access preamble configuration information sent by the foregoing network device; wherein, the random access preamble configuration information includes: the foregoing at least two random access preamble format information, and The random access preamble time-frequency resource information corresponding to each random access preamble format information.
  • the terminal equipment can determine the random access corresponding to the target random access preamble format information from the random access preamble time-frequency resource information corresponding to each random access preamble format information sent by the above network equipment
  • the preamble time-frequency resource information is used as the target random access preamble time-frequency resource information
  • the target random access preamble format information is sent to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information The corresponding random access preamble.
  • Step S504 The network device receives the random access preamble sent by the terminal device on the target time-frequency resource.
  • the network device receives the random access corresponding to the target random access preamble format information that the terminal device sends to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information.
  • the target random access preamble time-frequency resource information is the random access preamble corresponding to the target random access preamble format information in the at least two random access preamble time-frequency resource information sent by the network device to the terminal device Time-frequency resource information.
  • the target random access preamble format information is one of the aforementioned at least two random access preamble format information sent by the network device to the terminal device, and the target random access preamble format information and the The terminal device is associated with the target sub-coverage area to which the terminal device belongs in at least two sub-coverage areas in the preset coverage area of the network device.
  • the random access preamble configuration information and Doppler reference information are sent to the terminal device through the network device, where the foregoing random access preamble configuration information may include but is not limited to: at least two Random access preamble format information, and random access preamble time-frequency resource information corresponding to each random access preamble format information; the aforementioned Doppler reference information is used to indicate that the preset coverage area of the network device is divided into at least two sub Covered area.
  • the terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device according to the aforementioned Doppler reference information, and determines from the aforementioned at least two random access preamble format information that and The target random access preamble format information corresponding to the target sub-coverage area. Then, the terminal device sends the target random access preamble format information corresponding to the target random access preamble format information to the network device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information Random access preamble.
  • any terminal device in the embodiment of the present application can be based on the preset coverage area of the network device.
  • the target sub-coverage area in which the target sub-coverage area belongs to the random access preamble is sent using the random access preamble format information corresponding to the target sub-coverage area, so that the shorter the length of the random access preamble sent by the terminal device closer to the network device , The farther the terminal device is from the network device, the longer the length of the random access preamble sent by the terminal device, thereby saving time-frequency resources for transmitting the random access preamble.
  • step S502 the foregoing network device does not need to execute the foregoing step S501 correspondingly each time, which may be determined according to specific application scenarios.
  • FIG. 9 is a schematic flowchart of a random access preamble transmission method provided by another embodiment of this application.
  • the foregoing Doppler reference information includes at least one Doppler threshold value.
  • the implementation manner when the foregoing Doppler information includes a Doppler value is introduced.
  • the method of the embodiment of the present application may include:
  • Step S901 The network device sends random access preamble configuration information and at least one Doppler threshold to the terminal device.
  • the at least one Doppler threshold may include: a Doppler threshold D1 and a Doppler threshold D2.
  • the Doppler threshold D1 contour and the Doppler threshold D2 contour divide a preset coverage area of the network device (the area shown by the circle in Figure 6) into sub-coverage areas 1. Sub-coverage area 2 and sub-coverage area 3.
  • the random access preamble configuration information may include random access preamble format information corresponding to the sub-coverage area, and random access preamble time-frequency resource information corresponding to each random access preamble format information.
  • the aforementioned random access preamble configuration information may include: random access preamble format information corresponding to the aforementioned sub-coverage area 1, random access preamble format information corresponding to the aforementioned sub-coverage area 2, 2 and the aforementioned sub-coverage area 3 Corresponding random access preamble format information 3.
  • Random access preamble time-frequency resource information corresponding to the aforementioned random access preamble format information 1 Random access preamble time-frequency resource information corresponding to the aforementioned random access preamble format information 2 , And the random access preamble time-frequency resource information 3 corresponding to the aforementioned random access preamble format information 3.
  • Step S902 The terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device according to the Doppler value of the location where the terminal device belongs and the aforementioned at least one Doppler threshold value.
  • the terminal device may be based on the preset Doppler information shown in Table 1 above, the Doppler reference information and the mapping information between the sub-coverage areas, the Doppler value D of the location where the terminal device belongs, and the above-mentioned multiple
  • the Pule threshold D1 and the Doppler threshold D2 can determine the target sub-coverage area to which the terminal device belongs in the preset coverage area of the aforementioned network device. For example, if the Doppler value D of the location where the terminal device belongs is greater than the Doppler threshold D1, the terminal device can determine that the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device is a sub-coverage area. Coverage area 1.
  • Step S903 The terminal device determines target random access preamble format information corresponding to the target sub-coverage area, and target random access preamble time-frequency resource information corresponding to the target random access preamble format information.
  • the terminal device may select from the random access preamble format information 1 to the random access preamble format information according to the mapping information between the preset sub-coverage area and the random access preamble format information shown in Table 1 above.
  • the target random access preamble format information corresponding to the target sub-coverage area is determined in, such as the random access preamble format information 1 above.
  • the terminal device may determine the target random access preamble time-frequency resource information corresponding to the target random access preamble format information, such as the random access preamble time-frequency resource information 1 described above.
  • Step S904 The terminal device sends a random access preamble corresponding to the target random access preamble format information to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information.
  • Step S905 The network device receives the random access preamble sent by the terminal device on the target time-frequency resource.
  • the terminal device may also not need to perform the above steps of determining the target sub-coverage area, and may be based on the mapping information between preset Doppler information, Doppler reference information, and random access preamble format information (for example, the above-mentioned mapping information).
  • the comparison of Doppler information and Doppler reference information shown in Table 1, and the corresponding random access preamble format information determine the target random access preamble corresponding to the Doppler information of the location where the terminal device belongs Format information.
  • the random access preamble configuration information and at least one Doppler threshold are sent to the terminal device through the network device, where the random access preamble configuration information may include, but is not limited to: at least two Random access preamble format information, and random access preamble time-frequency resource information corresponding to each random access preamble format information; the aforementioned at least one Doppler threshold is used to indicate that the preset coverage area of the network device is divided into at least Two sub-covered areas.
  • the terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device according to the foregoing at least one Doppler threshold, and determines from the foregoing at least two random access preamble format information The target random access preamble format information corresponding to the target sub-coverage area. Then, the terminal device sends the target random access preamble format information corresponding to the target random access preamble format information to the network device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information Random access preamble.
  • any terminal device in the embodiment of the present application can use the random access preamble format information corresponding to the target sub-coverage area to send random access according to the target sub-coverage area to which it belongs in the preset coverage area of the network device.
  • the preamble makes the length of the random access preamble sent by the terminal device closer to the network device shorter, and the longer the length of the random access preamble sent by the terminal device farther from the network device, which can save money
  • the time-frequency resource for transmitting the random access preamble can be used.
  • step S902 the foregoing network device does not need to execute the foregoing step S901 correspondingly each time, and it may be determined according to specific application scenarios.
  • FIG. 10 is a schematic flowchart of a random access preamble transmission method provided by another embodiment of this application.
  • the foregoing Doppler reference information includes at least one Doppler rate of change threshold.
  • the implementation manner when the foregoing Doppler information includes a Doppler rate of change value Make an introduction.
  • the method of the embodiment of the present application may include:
  • Step S1001 The network device sends random access preamble configuration information and at least one Doppler rate of change threshold to the terminal device.
  • the at least one Doppler rate of change threshold may include: Doppler rate of change threshold DR1, Doppler rate of change threshold DR2, and Doppler rate of change threshold DR3.
  • the Doppler rate of change threshold DR1 contour, the Doppler rate of change threshold DR2 contour, and the Doppler rate of change threshold DR3 contour line a preset coverage area ( The area shown by the circle in FIG. 7) is divided into sub-covering area 1, sub-covering area 2, sub-covering area 3, and sub-covering area 4.
  • the random access preamble configuration information may include random access preamble format information corresponding to the sub-coverage area, and random access preamble time-frequency resource information corresponding to each random access preamble format information.
  • the aforementioned random access preamble configuration information may include: random access preamble format information corresponding to the aforementioned sub-coverage area 1, random access preamble format information corresponding to the aforementioned sub-coverage area 2, 2 and the aforementioned sub-coverage area 3 Corresponding random access preamble format information 3.
  • Random access preamble format information corresponding to the aforementioned sub-coverage area 4 Random access preamble time-frequency resource information corresponding to the aforementioned random access preamble format information 1 1.
  • the aforementioned random access The random access preamble time-frequency resource information corresponding to the incoming preamble format information 2 2, the random access preamble time-frequency resource information 3 corresponding to the aforementioned random access preamble format information 3, and the random access preamble corresponding to the aforementioned random access preamble format information 4 Incoming preamble time-frequency resource information 4.
  • Step S1002 The terminal device determines the target sub-coverage to which the terminal device belongs in the preset coverage area of the network device according to the Doppler change rate value of the location where the terminal device belongs and the at least one Doppler change rate threshold. area.
  • the terminal device may be based on the preset Doppler information shown in Table 2 above, the Doppler reference information and the mapping information between the sub-coverage areas, the Doppler change rate value DR of the location to which the terminal device belongs, and the The aforementioned Doppler rate of change threshold DR1, Doppler rate of change threshold DR2, and Doppler rate of change threshold DR3 can determine the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device. For example, if the Doppler rate of change value DR of the location to which the terminal device belongs is greater than the Doppler rate of change threshold DR1, the terminal device can determine the target child to which the terminal device belongs in the preset coverage area of the network device.
  • the coverage area is sub-coverage area 1.
  • Step S1003 The terminal device determines target random access preamble format information corresponding to the target sub-coverage area, and target random access preamble time-frequency resource information corresponding to the target random access preamble format information.
  • the terminal device may select from the random access preamble format information 1 to the random access preamble format information according to the mapping information between the preset sub-coverage area and the random access preamble format information shown in Table 2 above.
  • the target random access preamble format information corresponding to the target sub-coverage area is determined in, such as the random access preamble format information 1 above.
  • the terminal device may determine the target random access preamble time-frequency resource information corresponding to the target random access preamble format information, such as the random access preamble time-frequency resource information 1 described above.
  • Step S1004 The terminal device sends the random access preamble corresponding to the target random access preamble format information to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information.
  • Step S1005 The network device receives the random access preamble sent by the terminal device on the target time-frequency resource.
  • the terminal device may also not need to perform the above steps of determining the target sub-coverage area, and may be based on the mapping information between preset Doppler information, Doppler reference information, and random access preamble format information (for example, the above-mentioned mapping information).
  • the comparison of Doppler information and Doppler reference information shown in Table 2, and the corresponding random access preamble format information determine the target random access preamble corresponding to the Doppler information of the location where the terminal device belongs Format information.
  • random access preamble configuration information and at least one Doppler rate of change threshold are sent to the terminal device through the network device, where the random access preamble configuration information may include but is not limited to: At least two random access preamble format information, and random access preamble time-frequency resource information corresponding to each random access preamble format information; the aforementioned at least one Doppler rate of change threshold is used to indicate the preset coverage of the network device The area is divided into at least two sub-coverage areas.
  • the terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device according to the above-mentioned at least one Doppler rate of change threshold value, and obtains from the above-mentioned at least two random access preamble format information Determine the target random access preamble format information corresponding to the target sub-coverage area. Then, the terminal device sends the target random access preamble format information corresponding to the target random access preamble format information to the network device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information Random access preamble.
  • any terminal device in the embodiment of the present application can use the random access preamble format information corresponding to the target sub-coverage area to send random access according to the target sub-coverage area to which it belongs in the preset coverage area of the network device.
  • the preamble makes the length of the random access preamble sent by the terminal device closer to the network device shorter, and the longer the length of the random access preamble sent by the terminal device farther from the network device, which can save money
  • the time-frequency resource for transmitting the random access preamble can be used.
  • step S1002 the foregoing network device does not need to execute the foregoing step S1001 correspondingly each time, which can be determined according to specific application scenarios.
  • FIG. 11 is a schematic flowchart of a random access preamble transmission method provided by another embodiment of this application.
  • the foregoing Doppler reference information in the embodiments of the present application includes at least one Doppler threshold and at least one Doppler rate of change threshold.
  • the foregoing Doppler information includes Doppler values. Introduce how to achieve the value of Doppler rate of change.
  • the method of the embodiment of the present application may include:
  • Step S1101 The network device sends random access preamble configuration information, at least one Doppler threshold, and at least one Doppler rate of change threshold to the terminal device.
  • the at least one Doppler threshold may include a Doppler threshold D1
  • the at least one Doppler rate of change threshold may include: a Doppler rate of change threshold DR1 and a Doppler rate of change threshold DR2.
  • the Doppler threshold D1 contour, the Doppler change rate threshold DR1 contour, and the Doppler change rate threshold DR2 contour line a preset coverage area of the network device (such as The area indicated by the circle in FIG. 8) is divided into sub-covering area 1, sub-covering area 2, sub-covering area 3, sub-covering area 4, sub-covering area 5, and sub-covering area 6.
  • the random access preamble configuration information may include random access preamble format information corresponding to the sub-coverage area, and random access preamble time-frequency resource information corresponding to each random access preamble format information.
  • the aforementioned random access preamble configuration information may include: random access preamble format information corresponding to the aforementioned sub-coverage area 1, random access preamble format information corresponding to the aforementioned sub-coverage area 2, 2 and the aforementioned sub-coverage area 3 Corresponding random access preamble format information 3, random access preamble format information corresponding to the aforementioned sub-coverage area 4, 4 random access preamble format information corresponding to the aforementioned sub-coverage area 5, 5, corresponding to the aforementioned sub-coverage area 6
  • the random access preamble format information 6 the random access preamble time-frequency resource information corresponding to the aforementioned random access preamble format information 1, the random access preamble time-frequency resource information corresponding to the aforementioned random access preamble format information 2, the aforementioned Random access pre
  • Step S1102 the terminal device determines that the terminal device is in the network device according to the Doppler value, the Doppler change rate value, the at least one Doppler threshold value and the at least one Doppler change rate threshold of the location where the terminal device belongs.
  • the terminal device may be based on the preset Doppler information shown in Table 3, the Doppler reference information and the mapping information between the sub-coverage areas, the Doppler value D of the location where the terminal device belongs, and the Doppler By using the Le change rate value DR, the Doppler change rate threshold DR1, and the Doppler change rate threshold DR2, the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device can be determined.
  • the terminal device can determine that the terminal The target sub-coverage area to which the device belongs in the preset coverage area of the aforementioned network device is sub-coverage area 1.
  • Step S1103 The terminal device determines target random access preamble format information corresponding to the target sub-coverage area, and target random access preamble time-frequency resource information corresponding to the target random access preamble format information.
  • the terminal device may select from the random access preamble format information 1 to the random access preamble format information according to the mapping information between the preset sub-coverage area and the random access preamble format information shown in Table 3 above.
  • the target random access preamble format information corresponding to the target sub-coverage area is determined in, such as the random access preamble format information 1 above.
  • the terminal device may determine the target random access preamble time-frequency resource information corresponding to the target random access preamble format information, such as the random access preamble time-frequency resource information 1 described above.
  • Step S1104 The terminal device sends a random access preamble corresponding to the target random access preamble format information to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information.
  • Step S1105 The network device receives the random access preamble sent by the terminal device on the target time-frequency resource.
  • the terminal device may also not need to perform the above steps of determining the target sub-coverage area, and may be based on the mapping information between preset Doppler information, Doppler reference information, and random access preamble format information (for example, the above-mentioned mapping information).
  • the comparison of Doppler information and Doppler reference information shown in Table 3, and the corresponding random access preamble format information determine the target corresponding to the Doppler information of the terminal device at the location of the network device Random access preamble format information.
  • random access preamble configuration information, at least one Doppler threshold, and at least one Doppler rate of change threshold are sent to the terminal device through a network device, where the foregoing random access preamble configuration information May include, but is not limited to: at least two random access preamble format information, and random access preamble time-frequency resource information corresponding to each random access preamble format information; the above-mentioned at least one Doppler threshold and at least one Doppler
  • the change rate threshold is used to indicate that the preset coverage area of the network device is divided into at least two sub-coverage areas.
  • the terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device according to the above-mentioned at least one Doppler threshold and at least one Doppler rate of change threshold, and obtains data from the above-mentioned at least two
  • the random access preamble format information determines the target random access preamble format information corresponding to the target sub-coverage area.
  • the terminal device sends the target random access preamble format information corresponding to the target random access preamble format information to the network device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information Random access preamble.
  • any terminal device in the embodiment of the present application can use the random access preamble format information corresponding to the target sub-coverage area to send random access according to the target sub-coverage area to which it belongs in the preset coverage area of the network device.
  • the preamble makes the length of the random access preamble sent by the terminal device closer to the network device shorter, and the longer the length of the random access preamble sent by the terminal device farther from the network device, which can save money
  • the time-frequency resource for transmitting the random access preamble can be used.
  • step S1102 the foregoing network device does not need to execute the foregoing step S1101 correspondingly each time, which may be determined according to specific application scenarios.
  • FIG. 12 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
  • the terminal device 120 of the embodiment of the present application may include: a processing module 1201 and a sending module 1202.
  • the processing module 1201 is configured to determine the target random access preamble format information corresponding to the target sub-coverage area according to the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device; wherein, the preset coverage The area is composed of one or more beams, and the preset coverage area includes: at least two sub-coverage areas;
  • the sending module 1202 is configured to send a random access preamble corresponding to the target random access preamble format information to the network device on the target time-frequency resource corresponding to the target random access preamble time-frequency resource information, where the target random access preamble format information
  • the access preamble time-frequency resource information is random access preamble time-frequency resource information corresponding to the target random access preamble format information.
  • the target sub-coverage area is associated with the Doppler information of the location where the terminal device belongs and the acquired Doppler reference information; wherein, the at least two sub-coverage areas are based on the Doppler information. Divided by reference information.
  • the Doppler reference information includes: at least one Doppler threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler change rate Threshold, where different Doppler rate of change thresholds correspond to different sub-coverage areas.
  • the Doppler reference information includes: the at least one Doppler threshold, correspondingly, the Doppler information includes: Doppler value; and/or,
  • the Doppler reference information includes the at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value.
  • the terminal device 120 further includes:
  • the receiving module is used to receive the Doppler reference information sent by the network device.
  • processing module 1201 is further configured to:
  • the Doppler information is determined according to the downlink signal sent by the network device.
  • processing module 1201 is specifically configured to:
  • mapping information between the preset sub-coverage area and the random access preamble format information determine the target random access preamble format information corresponding to the target sub-coverage area from at least two pieces of obtained random access preamble format information; where ,
  • the mapping information between the preset sub-coverage area and the random access preamble format information includes: the mapping information between the target sub-coverage area and the target random access preamble format information.
  • the terminal device 120 further includes:
  • the receiving module is configured to receive random access preamble configuration information sent by the network device; wherein, the random access preamble configuration information includes: the at least two random access preamble format information, and the random access preamble format information corresponding Random access preamble time-frequency resource information.
  • the random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is the same as that of the sub-coverage area.
  • the distance between the area and the network device has a positive relationship.
  • the target random access preamble format information includes at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • the terminal device 120 provided in the embodiment of the present application may be used to implement the technical solution of the terminal device in the foregoing random access preamble transmission method embodiment of the present application.
  • the implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of the application.
  • the network device 130 of the embodiment of the present application may include: a sending module 1301 and a receiving module 1302.
  • the sending module 1301 is configured to send random access preamble configuration information and Doppler reference information; wherein, the random access preamble configuration information includes: at least two random access preamble format information, and the random access preamble Random access preamble time-frequency resource information corresponding to the format information; the Doppler reference information is used to indicate that the preset coverage area of the network device is divided into at least two sub-coverage areas; the preset coverage area is composed of one or more beams ;
  • the receiving module 1302 is configured to receive the random access preamble sent by the terminal equipment on the target time-frequency resource; wherein the target random access preamble format information corresponding to the random access preamble is in the at least two random access preamble format information
  • a random access preamble format information of the target random access preamble format information is associated with the target sub-coverage area to which the terminal device belongs in the at least two sub-coverage areas; the target random access preamble corresponding to the target time-frequency resource
  • the time-frequency resource information is at least two random access preamble time-frequency resource information corresponding to the target random access preamble format information in the random access preamble time-frequency resource information.
  • the target sub-coverage area is associated with the Doppler information of the location where the terminal device belongs and the Doppler reference information.
  • the Doppler reference information includes: at least one Doppler threshold, where different Doppler thresholds correspond to different sub-coverage areas; and/or, at least one Doppler change rate Threshold, where different Doppler rate of change thresholds correspond to different sub-coverage areas.
  • the Doppler reference information includes: at least one Doppler threshold, correspondingly, the Doppler information includes: Doppler value; and/or,
  • the Doppler reference information includes the at least one Doppler rate of change threshold, correspondingly, the Doppler information includes: the Doppler rate of change value.
  • the random access preamble format information corresponding to different sub-coverage areas is different, and the length of the random access preamble indicated by the random access preamble format information corresponding to any sub-coverage area is the same as that of the sub-coverage area.
  • the distance between the coverage area and the network device has a positive relationship.
  • the target random access preamble format information includes at least one of the following: the length of the cyclic prefix CP of the random access preamble, the sequence length, the number of sequence repetitions, and the subcarrier spacing.
  • the network device 130 provided by the embodiment of the present application may be used to implement the technical solution of the network device in the foregoing random access preamble transmission method embodiment of the present application.
  • the implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 14 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • the communication device includes: a processor 141 and a communication interface 142.
  • the processor 141 and the communication interface 142 may communicate via a communication bus.
  • the communication interface 142 is used to receive data to be processed and output processed data.
  • the processor is configured to execute any method shown in the embodiment corresponding to FIG. 5, FIG. 9, FIG. 10, or FIG. 11 on the data to be processed.
  • the data to be processed when the communication device is applied to a terminal device, the data to be processed may be the above-mentioned Doppler reference information and random access preamble configuration information in the embodiments of this application, and the processed data may be the above-mentioned target random access preamble. Random access preamble corresponding to format information, etc.
  • the data to be processed may be the random access preamble sent by the terminal device on the target time-frequency resource, etc., and the processed data may be the aforementioned random access preamble configuration information and Doppler reference information. Wait.
  • the communication interface 142 may also include a transmitter and/or a receiver.
  • the foregoing processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs). )Wait.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the communication device further includes a memory 143 for storing program instructions.
  • the program instructions When the program instructions are executed by the processor, the method shown in the embodiment shown in FIG. 5, FIG. 9, FIG. 10, or FIG. 11 is executed.
  • the memory and the processor may be independent units, or may be integrated, which is not specifically limited in the embodiment of the present application.
  • FIG. 15 is a schematic diagram of the hardware structure of a communication device provided by another embodiment of the application.
  • the communication device includes a logic circuit 151, an input interface 152, and an output interface 153.
  • the input interface is used to obtain the data to be processed; the logic circuit is used to execute the data to be processed as shown in FIGS.
  • the method shown in the embodiment shown in FIG. 10 or FIG. 11 obtains processed data; and the output interface is used to output the processed data.
  • the data to be processed may be the above-mentioned Doppler reference information and random access preamble configuration information in the embodiments of this application, and the processed data may be the above-mentioned target random access preamble.
  • the data to be processed may be the random access preamble sent by the terminal device on the target time-frequency resource, etc.
  • the processed data may be the aforementioned random access preamble configuration information and Doppler reference information. Wait.
  • the embodiment of the present application also provides a chip, which includes any one of the above-mentioned communication devices, or is used to support the communication device to realize the functions shown in the embodiments of the present application, for example, the network device sends random access preamble configuration information and Doppler reference information, where the aforementioned random access preamble configuration information may include but is not limited to: at least two random access preamble format information, and random access preamble time-frequency resources corresponding to each random access preamble format information Information; the aforementioned Doppler reference information is used to indicate that the preset coverage area of the network device is divided into at least two sub-coverage areas.
  • the terminal device determines the target sub-coverage area to which the terminal device belongs in the preset coverage area of the network device according to the above-mentioned Doppler reference information, and determines from the above-mentioned at least two random access preamble format information and The target random access preamble format information corresponding to the target sub-coverage area. Then, the terminal device sends the target random access preamble format information corresponding to the target random access preamble format information to the network device on the target time-frequency resource indicated by the target random access preamble time-frequency resource information corresponding to the target random access preamble format information Random access preamble and other functions.
  • the chip can be specifically used in a chip system, and the chip system can be composed of a chip, and can also include a chip and other discrete devices.
  • the chip in the terminal device implements the above method
  • the chip includes a processing unit.
  • the chip may also include a communication unit.
  • the processing unit may be, for example, a processor.
  • the communication unit for example, It can be an input/output interface, pin or circuit, etc.
  • the processing unit executes all or part of the actions performed by each processing module in the embodiments of the present application, and the communication unit can execute corresponding receiving or sending actions, for example, receiving random access preamble configuration information and Doppler reference information sent by a network device, etc. .
  • the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium is used to store a computer program, and the computer program is used to implement the above-mentioned embodiment shown in FIG. 5, FIG. 9, FIG. 10 or FIG. Indicates the method.
  • An embodiment of the present application also provides a communication system, which includes the terminal device as described in FIG. 12 and the network device as described in FIG. 13.
  • the size of the sequence number of each process does not mean the order of execution.
  • the order of execution of each process should be determined by its function and internal logic. There should be any limitation on the implementation process of the embodiments of the present application.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing equipment can be used to generate It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请实施例提供一种随机接入前导的传输方法、装置及存储介质，该方法包括：终端设备根据该终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。可见，本申请实施例中的任意终端设备可以根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采用与该目标子覆盖区域对应的随机接入前导格式信息发送随机接入前导，从而可以节省用于传输随机接入前导的时频资源。

Description

随机接入前导的传输方法、装置及存储介质
本申请要求于2019年12月06日提交中国专利局、申请号为201911243346.3、申请名称为“随机接入前导的传输方法、装置及存储介质”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
本申请涉及通信技术领域，尤其涉及一种随机接入前导的传输方法、装置及存储介质。
背景技术
在通信系统中，终端设备通常采用基于竞争的随机接入方式接入网络。
相关技术中，网络设备以小区为单位广播随机接入前导的配置信息，其中，配置信息包括：随机接入前导格式信息和随机接入前导时频资源信息。进一步地，终端设备根据接收到的配置信息，在随机接入前导时频资源信息对应的时频资源上发送与随机接入前导格式信息对应的随机接入前导。其中，相关技术中的位于同一小区的终端设备所发送的随机接入前导的长度均相同。
可见，对于距离网络设备较近的终端设备来说其所发送的随机接入前导的长度，与距离网络设备较远的终端设备所发送的随机接入前导的长度相同，从而会导致浪费时频资源。
发明内容
本申请实施例提供一种随机接入前导的传输方法、装置及存储介质，提升了时频资源的使用效率。
第一方面，本申请实施例提供一种随机接入前导的传输方法，包括：
根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息；其中，该预设覆盖区域由一个或者多个波束组成，该预设覆盖区域包括：至少两个子覆盖区域；
在目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导，其中，该目标随机接入前导时频资源信息为与该目标随机接入前导格式信息对应的随机接入前导时频资源信息。
本申请实施例中，终端设备根据该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，从上述网络设备发送的至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。可见，本申请实施例中的任意终端设备可以根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采 用与该目标子覆盖区域对应的随机接入前导格式信息发送随机接入前导，使得距离该网络设备越近的终端设备所发送的随机接入前导的长度越短，距离该网络设备越远的终端设备所发送的随机接入前导的长度越长，从而可以节省用于传输随机接入前导的时频资源。
在一种可能的实现方式中，该目标子覆盖区域与该终端设备所属位置的多普勒信息和获取的多普勒参考信息相关联；其中，该至少两个子覆盖区域为根据该多普勒参考信息划分的。
在一种可能的实现方式中，该多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
在一种可能的实现方式中，若该多普勒参考信息包括：该至少一个多普勒阈值，对应地，该多普勒信息包括：多普勒值；和/或，
若该多普勒参考信息包括：该至少一个多普勒变化率阈值，对应地，该多普勒信息包括：多普勒变化率值。
在一种可能的实现方式中，该根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息之前，该方法还包括：
接收该网络设备发送的该多普勒参考信息。
在一种可能的实现方式中，该根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息之前，该方法还包括：
根据该网络设备发送的下行信号确定该多普勒信息。
在一种可能的实现方式中，该根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息，包括：
根据预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的至少两个随机接入前导格式信息中确定与该目标子覆盖区域对应的目标随机接入前导格式信息；其中，该预设子覆盖区域与随机接入前导格式信息之间的映射信息中包括：该目标子覆盖区域与该目标随机接入前导格式信息之间的映射信息。
应理解，该终端设备中的上述预设子覆盖区域与随机接入前导格式信息之间的映射信息可以由系统预置的，或者由上述网络设备预置的；当然，还可以通过其它方式获取的，本申请实施例中对此不做限定。
在一种可能的实现方式中，该根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息之前，该方法还包括：
接收该网络设备发送的随机接入前导配置信息；其中，该随机接入前导配置信息中包括：该至少两个随机接入前导格式信息，以及该随机接入前导格式信息对应的随机接入前导时频资源信息。
在一种可能的实现方式中，不同子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该网络设备之间的距离成正向关系，或者理解为：任意子覆盖区域和该网络设备之间 的距离越长，则该子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度越长。
在一种可能的实现方式中，该目标随机接入前导格式信息包括以下至少一项：该随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
第二方面，本申请实施例提供一种随机接入前导的传输方法，包括：
发送随机接入前导配置信息和多普勒参考信息；其中，该随机接入前导配置信息中包括：至少两个随机接入前导格式信息，以及该随机接入前导格式信息对应的随机接入前导时频资源信息；该多普勒参考信息用于指示将网络设备的预设覆盖区域划分为至少两个子覆盖区域；该预设覆盖区域由一个或者多个波束组成；
接收终端设备在目标时频资源上发送的随机接入前导；其中，该随机接入前导对应的目标随机接入前导格式信息为该至少两个随机接入前导格式信息中的一个随机接入前导格式信息，该目标随机接入前导格式信息与该终端设备在该至少两个子覆盖区域中所属的目标子覆盖区域相关联；该目标时频资源对应的目标随机接入前导时频资源信息为至少两个该随机接入前导时频资源信息中与该目标随机接入前导格式信息对应的随机接入前导时频资源信息。
本申请实施例中，网络设备通过向终端设备发送随机接入前导配置信息和多普勒参考信息，以便于该终端设备在接收到上述随机接入前导配置信息和多普勒参考信息后，可以根据上述多普勒参考信息确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述随机接入前导配置信息中的至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。进一步地，该网络设备接收终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，所发送的与该目标随机接入前导格式信息对应的随机接入前导。可见，本申请实施例中的网络设备可以接收任意终端设备根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采用与该目标子覆盖区域对应的随机接入前导格式信息所发送的随机接入前导，使得距离该网络设备越近的终端设备所发送的随机接入前导的长度越短，距离该网络设备越远的终端设备所发送的随机接入前导的长度越长，从而可以节省用于传输随机接入前导的时频资源。
在一种可能的实现方式中，该目标子覆盖区域与该终端设备所属位置的多普勒信息和该多普勒参考信息相关联。
在一种可能的实现方式中，该多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
在一种可能的实现方式中，若该多普勒参考信息包括：至少一个多普勒阈值，对应地，该多普勒信息包括：多普勒值；和/或，
若该多普勒参考信息包括：该至少一个多普勒变化率阈值，对应地，该多普勒信息包括：多普勒变化率值。
在一种可能的实现方式中，不同该子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该网络设备之间的距离成正向关系。
在一种可能的实现方式中，该目标随机接入前导格式信息包括以下至少一项：该随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
第三方面，本申请实施例提供一种终端设备，包括：
处理模块，用于根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息；其中，该预设覆盖区域由一个或者多个波束组成，该预设覆盖区域包括：至少两个子覆盖区域；
发送模块，用于在目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导，其中，该目标随机接入前导时频资源信息为与该目标随机接入前导格式信息对应的随机接入前导时频资源信息。
在一种可能的实现方式中，该目标子覆盖区域与该终端设备所属位置的多普勒信息和获取的多普勒参考信息相关联；其中，该至少两个子覆盖区域为根据该多普勒参考信息划分的。
在一种可能的实现方式中，该多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
在一种可能的实现方式中，若该多普勒参考信息包括：该至少一个多普勒阈值，对应地，该多普勒信息包括：多普勒值；和/或，
若该多普勒参考信息包括：该至少一个多普勒变化率阈值，对应地，该多普勒信息包括：多普勒变化率值。
在一种可能的实现方式中，该终端设备还包括：
接收模块，用于接收该网络设备发送的该多普勒参考信息。
在一种可能的实现方式中，该处理模块还用于：
根据该网络设备发送的下行信号确定该多普勒信息。
在一种可能的实现方式中，该处理模块具体用于：
根据预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的至少两个随机接入前导格式信息中确定与该目标子覆盖区域对应的目标随机接入前导格式信息；其中，该预设子覆盖区域与随机接入前导格式信息之间的映射信息中包括：该目标子覆盖区域与该目标随机接入前导格式信息之间的映射信息。
在一种可能的实现方式中，该终端设备还包括：
接收模块，用于接收该网络设备发送的随机接入前导配置信息；其中，该随机接入前导配置信息中包括：该至少两个随机接入前导格式信息，以及该随机接入前导格式信息对应的随机接入前导时频资源信息。
在一种可能的实现方式中，不同子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该网络设备之间的距离成正向关系。
在一种可能的实现方式中，该目标随机接入前导格式信息包括以下至少一项：该随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
第四方面，本申请实施例提供一种网络设备，包括：
发送模块，用于发送随机接入前导配置信息和多普勒参考信息；其中，该随机接入前 导配置信息中包括：至少两个随机接入前导格式信息，以及该随机接入前导格式信息对应的随机接入前导时频资源信息；该多普勒参考信息用于指示将网络设备的预设覆盖区域划分为至少两个子覆盖区域；该预设覆盖区域由一个或者多个波束组成；
接收模块，用于接收终端设备在目标时频资源上发送的随机接入前导；其中，该随机接入前导对应的目标随机接入前导格式信息为该至少两个随机接入前导格式信息中的一个随机接入前导格式信息，该目标随机接入前导格式信息与该终端设备在该至少两个子覆盖区域中所属的目标子覆盖区域相关联；该目标时频资源对应的目标随机接入前导时频资源信息为至少两个该随机接入前导时频资源信息中与该目标随机接入前导格式信息对应的随机接入前导时频资源信息。
在一种可能的实现方式中，该目标子覆盖区域与该终端设备所属位置的多普勒信息和该多普勒参考信息相关联。
在一种可能的实现方式中，该多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
在一种可能的实现方式中，若该多普勒参考信息包括：至少一个多普勒阈值，对应地，该多普勒信息包括：多普勒值；和/或，
若该多普勒参考信息包括：该至少一个多普勒变化率阈值，对应地，该多普勒信息包括：多普勒变化率值。
在一种可能的实现方式中，不同该子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该网络设备之间的距离成正向关系。
在一种可能的实现方式中，该目标随机接入前导格式信息包括以下至少一项：该随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
第五方面，本申请实施例提供一种通信装置，包括处理器和通信接口，该通信接口用于接收待处理的数据和输出处理后的数据，该处理器用于对该待处理的数据执行如上述第一方面或第一方面的任意实现方式所述的方法,得到该处理后的数据。
在一种可能的实现方式中，该通信装置还包括存储器，用于存储程序指令，该程序指令由该处理器执行时，使得上述第一方面或第一方面的任意实现方式所述的方法被执行。
第六方面，本申请实施例提供一种通信装置，包括逻辑电路、输入接口和输出接口，其中：
该输入接口用于获取待处理的数据；
该逻辑电路用于对待处理的数据执行如上述第一方面或第一方面的任意实现方式所述的方法,得到处理后的数据；以及
该输出接口用于输出处理后的数据。
第七方面，本申请实施例提供一种芯片，包括如上述第五方面或第六方面的任意实现方式所述的通信装置。
第八方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，该计算机程序用于实现如上述第一方面或第一方面的任意实现方式所述的方法。
第九方面，本申请实施例提供一种通信装置，包括处理器和通信接口，该通信接口用于接收待处理的数据和输出处理后的数据，该处理器用于对该待处理的数据执行如上述第二方面或第二方面的任意实现方式所述的方法,得到该处理后的数据。
在一种可能的实现方式中，该通信装置还包括存储器，用于存储程序指令，该程序指令由该处理器执行时，使得上述第二方面或第二方面的任意实现方式所述的方法被执行。
第十方面，本申请实施例提供一种通信装置，包括逻辑电路、输入接口和输出接口，其中：
该输入接口用于获取待处理的数据；
该逻辑电路用于对待处理的数据执行如上述第二方面或第二方面的任意实现方式所述的方法,得到处理后的数据；以及
该输出接口用于输出处理后的数据。
第十一方面，本申请实施例提供一种芯片，包括如上述第九方面或第十方面的任意实现方式所述的通信装置。
第十二方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，该计算机程序用于实现如上述第二方面或第二方面的任意实现方式所述的方法。
附图说明
图1为本申请实施例提供的陆地通信场景的通信系统的示意图；
图2为本申请实施例提供的NTN通信场景的通信系统的示意图；
图3为相关技术提供的基于竞争的随机接入过程示意图；
图4为本申请实施例提供的LEO卫星设备的覆盖区域的划分示意图；
图5为本申请一实施例提供的随机接入前导的传输方法的流程示意图；
图6为本申请实施例提供的网络设备的覆盖区域的划分示意图一；
图7为本申请实施例提供的网络设备的覆盖区域的划分示意图二；
图8为本申请实施例提供的网络设备的覆盖区域的划分示意图三；
图9为本申请另一实施例提供的随机接入前导的传输方法的流程示意图；
图10为本申请另一实施例提供的随机接入前导的传输方法的流程示意图；
图11为本申请另一实施例提供的随机接入前导的传输方法的流程示意图
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网络设备的结构示意图；
图14为本申请一实施例提供的通信装置的硬件结构示意图；
图15为本申请另一实施例提供的通信装置的硬件结构示意图。
具体实施方式
首先，对本申请实施例所涉及的通信场景和部分词汇进行解释说明。
本申请实施例提供的随机接入前导的发送方法、接收方法、装置及存储介质可以适 用于陆地通信场景中，也可以适用于非陆地网络(non-terrestrial networks，NTN)通信场景中；当然，还可以适用于其它通信场景中，本申请实施例中对此并不做限定。
图1为本申请实施例提供的陆地通信场景的通信系统的示意图。如图1所示，陆地通信场景的通信系统中可以包括但不限于：网络设备10和至少一个终端设备(为了便于画图，图1中以终端设备11和终端设备12为例示出的)；其中，终端设备11与网络设备10之间的距离，小于终端设备12与网络设备10之间的距离。
当然，该陆地通信场景的通信系统中还可以包括其它设备，本申请实施例中对此并不做限定。
示例性地，上述陆地通信场景的通信系统可以是2G网络的基站接入系统(即该RAN包括基站和基站控制器)，或可以为3G网络的基站接入系统(即该RAN包括基站和RNC)，或可以为4G网络的基站接入系统(即该RAN包括eNB和RNC)，或可以为第五代移动通信技术(5th-generation，5G)网络的基站接入系统，或者可以为未来网络的基站接入系统等。
示例性地，在陆地通信场景中，上述网络设备10可以包括但不限于：基站、发送接收点(transmission reception point，TRP)。其中，基站：又称为无线接入网(radio access network，RAN)设备，是一种将终端(或者称之为终端设备)接入到无线网络的设备，可以是全球移动通讯(global system of mobile communication，GSM)或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的基站(nodeB，NB)，还可以是长期演进(long term evolution，LTE)中的演进型基站(evolutional node B，eNB或eNodeB)，或者中继站或接入点，或者5G网络中的基站(gNodeB，gNB)，或者未来网络中的基站等，在此并不限定。
上述终端设备11和/或终端设备12可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(radio access network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。又例如，可穿戴设备、计算设备、连接到无线调制解调器的其它处理设备、手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、机器类型通信终端、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
上述无线终端也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、远程终端(remote  terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、用户设备(user device or user equipment，UE)，在此不作限定。
图2为本申请实施例提供的NTN通信场景的通信系统的示意图。如图2所示，NTN通信场景的通信系统中可以包括但不限于：网络设备20和至少一个终端设备(为了便于画图，图2中以终端设备21和终端设备22为例示出的)；其中，终端设备21与网络设备20之间的距离，小于终端设备22与网络设备20之间的距离。
当然，该NTN通信场景的通信系统中还可以包括其它设备，本申请实施例中对此并不做限定。
示例性地，上述NTN通信场景的通信系统可以包括但不限于卫星通信中的移动卫星通信系统。
示例性地，在NTN通信场景中，网络设备20可以包括但不限于卫星设备，例如，低地球轨道(low earth orbit,LEO)卫星设备、LEO卫星设备中有无线收发功能的设备、LEO卫星设备中设置于具有无线收发功能的设备内的芯片、非静止轨道(non-geostationary earth orbit，NGEO)通信卫星设备、NGEO通信卫星设备中有无线收发功能的设备，或者，NGEO通信卫星设备中设置于具有无线收发功能的设备内的芯片。
上述终端设备21和/或终端设备22可以包括但不限于：上述移动终端、中继站、或者上述陆地通信场景中的基站。例如，上述卫星设备可以为上述终端设备21和终端设备22提供通信服务，上述终端设备21和终端设备22作为中继站向与其连接的其它设备提供上述通信服务。
需要说明的是，本申请实施例中涉及的网络设备还可以包括设备到设备(device-to-device，D2D)通信中具有网络功能的设备，对应地，终端设备还可以包括D2D通信中具有接收功能的设备。
本申请实施例中，执行网络设备侧方法的执行主体可以是上述任意网络设备，也可以是上述任意网络设备中的装置(需要说明的是，在本申请提供的实施例中以网络设备为例进行描述的)。示例性地，网络设备中的装置可以是芯片系统、电路或者模块等，本申请不作限制。
本申请实施例中，执行终端设备侧方法的执行主体可以是上述任意终端设备，也可以是上述任意终端设备中的装置(需要说明的是，在本申请提供的实施例中以终端设备为例进行描述的)。示例性地，终端设备中的装置可以是芯片系统、电路或者模块等，本申请不作限制。
本申请所涉及的上述终端设备或网络设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
本申请实施例中涉及的随机接入前导可以包括但不限于：循环前缀(cyclic prefix，CP)、序列(sequence)和保护间隔(guard time,GT)。考虑到CP的作用之一是消除由往返时延差带来的符号间干扰，因此，当往返时延差增大时，则CP的长度也增加，另外序列的长 度和GT的长度均不短于CP的长度，所以，往返时延差的增大，势必会使随机接入前导的总长度增加。
由于上述陆地通信场景中的陆地小区半径不大于100km，陆地小区内往返时延较小，因此，随机接入前导的CP长度小于或等于684.37us。但是，在上述NTN通信场景中每个波束(beam)的直径较大，波束中的往返时延差远大于陆地通信场景中的往返时延，考虑到随机接入前导中CP的长度要大于最大往返时延差，且序列的长度和GT的长度均不短于CP的长度，因此，NTN通信场景中的随机接入前导的总长度远大于陆地通信场景中的随机接入前导的总长度，从而NTN通信场景中发送随机接入前导会占用更多的时频资源。
以上述LEO卫星通信为例，假设轨道高度为1200km，波束直径约为300km，最小仰角为12度，则该波束中的最大往返时延差为1.86ms，即随机接入前导中CP的长度至少为1.86ms。可见，LEO卫星通信场景中CP的长度是陆地通信场景中CP的长度的2.74倍，LEO卫星通信场景中分给随机接入前导的随机接入时域资源至少为5.58ms，而陆地通信场景中分给随机接入前导的随机接入时域资源最长为3.51ms。
下面以陆地通信场景为例，对本申请实施例中涉及的随机接入过程进行介绍：
在陆地通信场景中，终端设备以基于竞争的随机接入方式接入网络。图3为相关技术提供的基于竞争的随机接入过程示意图，如图3所示，基于竞争的随机接入过程包括：
步骤S301、网络设备以小区为单位广播随机接入前导的配置信息，其中，配置信息包括：随机接入前导(preamble)格式信息和随机接入前导时频资源信息。
步骤S302、终端设备根据接收到的上述配置信息，在上述随机接入前导时频资源信息对应的时频资源上发送与上述随机接入前导格式信息对应的随机接入前导。其中，位于同一小区的终端设备所发送的随机接入前导的长度均相同。
步骤S303、网络设备接收到上述随机接入前导后，向上述终端设备发送随机接入响应(random access response，RAR)，其中，该RAR中可以携带该网络设备通过检测前导估计的传输时延所对应的定时提前(timing advance，TA)等。
步骤S304、终端设备在接收到上述RAR后，向上述网络设备发送携带有终端设备竞争解决标识(contention resolution identity)的消息用以解决竞争。
步骤S305、上述网络设备和终端设备完成竞争解决。
可见，相关技术的陆地通信场景中，对于距离网络设备较近的终端设备(往返时延小)来说，其所发送的随机接入前导的长度，与距离网络设备较远的终端设备(往返时延大)所发送的随机接入前导的长度相同，从而会导致浪费用于发送随机接入前导的时频资源。
另外，对于NTN通信场景中，波束直径将远大于陆地通信场景的小区半径。如果同一波束中的终端设备所发送的随机接入前导的长度均相同，则对于距离卫星设备较近的终端设备(往返时延差小)会浪费用于发送随机接入前导的时频资源。
需要说明的是，本申请实施例中涉及的波束是指网络设备中天线所发射的电磁波的覆盖区域；当然，也可以称之为其它名字，例如，小区、部分带宽(bandwidth part，BWP)对应区域。
本申请实施例中涉及的预设覆盖区域可以由一个或多个波束组成，该预设覆盖区域可以包括但不限于：根据多普勒参考信息所划分成的至少两个子覆盖区域。
本申请实施例中涉及的多普勒参考信息可以包括但不限于：至少一个多普勒(doppler) 阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
为了便于理解，本申请实施例中以由西向东运动的LEO卫星设备为例，对该LEO卫星设备的覆盖区域的划分进行介绍。图4为本申请实施例提供的LEO卫星设备的覆盖区域的划分示意图，如图4所示，假设该LEO卫星设备在经纬度(0,0)的正上方，沿着赤道方向由西向东运动，图4中的虚线表示该LEO卫星设备的覆盖区域中的多普勒阈值等高线，实线表示多普勒变化率阈值等高线，黑色直线表示该LEO卫星设备的运动轨迹在地球表面的投影，如图4左上部分的圆圈表示该LEO卫星设备的覆盖区域中的一个预设覆盖区域。如图4所示，多普勒阈值等高线和多普勒变化率阈值等高线将上述预设覆盖区域划分成12个子覆盖区域。其中，不同子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该LEO卫星设备之间的距离成正向关系，或者理解为：任意子覆盖区域和该LEO卫星设备之间的距离越长，则该子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度越长。例如，如图4所示中的子覆盖区域2对应的随机接入前导格式信息所指示的随机接入前导的长度，大于子覆盖区域6对应的随机接入前导格式信息所指示的随机接入前导的长度。
应理解，若考虑多普勒阈值等高线，不考虑多普勒变化率阈值等高线，则多普勒阈值等高线可以将上述预设覆盖区域划分成多个子覆盖区域；或者，若考虑多普勒变化率阈值等高线，不考虑多普勒阈值等高线，则多普勒变化率阈值等高线可以将上述预设覆盖区域划分成多个子覆盖区域。
当然，上述预设覆盖区域还可以通过其它方式划分成至少两个子覆盖区域。
本申请实施例中涉及的多普勒信息与上述多普勒参考信息相对应。示例性地，若上述多普勒参考信息包括：至少一个多普勒阈值，对应地，上述多普勒信息包括：多普勒值。
又一示例性地，若上述多普勒参考信息包括：至少一个多普勒变化率阈值，对应地，上述多普勒信息包括：多普勒变化率值。
又一示例性地，若上述多普勒参考信息包括：至少一个多普勒阈值和至少一个多普勒变化率阈值，对应地，上述多普勒信息包括：多普勒值和多普勒变化率值。
本申请实施例中涉及的上述多普勒值可以包括但不限于以下至少一项：由于网络设备与终端设备之间的相对运动造成的多普勒偏移、网络设备晶振或本振产生的频偏、终端设备晶振或本振产生的频偏。对应地，本申请实施例中涉及的上述多普勒变化率值可以根据上述多普勒值的变化率得到。
本申请实施例中涉及的任意随机接入前导格式信息可以包括但不限于以下至少一项：随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多 个。
本申请实施例提供的随机接入前导的传输方法、装置及存储介质，通过网络设备向终端设备发送随机接入前导配置信息和多普勒参考信息，其中，上述随机接入前导配置信息中可以包括但不限于：至少两个随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息；上述多普勒参考信息用于指示将该网络设备的预设覆盖区域划分为至少两个子覆盖区域。对应地，终端设备根据上述多普勒参考信息确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。可见，任意终端设备可以根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采用相应的随机接入前导格式信息发送随机接入前导，使得距离该网络设备越近的终端设备所发送的随机接入前导的长度越短，距离该网络设备越远的终端设备所发送的随机接入前导的长度越长，从而解决了上述浪费时频资源的技术问题。
本申请实施例中，上述终端设备可以根据该终端设备所属位置的上述多普勒信息和从上述网络设备获取的上述多普勒参考信息，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
一种可能的实现方式：若上述多普勒参考信息包括：至少一个多普勒阈值，对应地，上述多普勒信息包括：多普勒值，则该终端设备根据该终端设备所属位置的多普勒值和上述至少一个多普勒阈值，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
另一种可能的实现方式：若上述多普勒参考信息包括：至少一个多普勒变化率阈值，对应地，上述多普勒信息包括：多普勒变化率值，则该终端设备根据该终端设备所属位置的多普勒变化率值和上述至少一个多普勒变化率阈值，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
另一种可能的实现方式：若上述多普勒参考信息包括：至少一个多普勒阈值和至少一个多普勒变化率阈值，对应地，上述多普勒信息包括：多普勒值和多普勒变化率值，则该终端设备根据该终端设备所属位置的多普勒值、多普勒变化率值、上述至少一个多普勒阈值和至少一个多普勒变化率阈值，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
下面以具体地实施例对本申请的技术方案进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。
图5为本申请一实施例提供的随机接入前导的传输方法的流程示意图。如图5所示，本申请实施例的方法可以包括：
步骤S501、网络设备发送随机接入前导配置信息和多普勒参考信息。
示例性地，上述随机接入前导配置信息中可以包括但不限于：至少两个随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息。其中，不同随机接入前导格式信息所指示的随机接入前导的长度不同。
本申请实施例中涉及的任意随机接入前导格式信息可以包括但不限于以下至少一项： 随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
应理解，任意随机接入前导格式信息对应的随机接入前导时频资源信息所指示的时频资源用于上述终端设备发送该随机接入前导格式信息所指示的随机接入前导。
本步骤中，网络设备可以向位于预设覆盖区域的终端设备发送上述随机接入前导配置信息和上述多普勒参考信息，以便于终端设备在接收到上述随机接入前导配置信息和多普勒参考信息后，可以根据上述多普勒参考信息确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。
示例性地，该网络设备可以将上述随机接入前导配置信息和多普勒参考信息携带在系统信息块(system information block，SIB)中广播发送。应理解，上述随机接入前导配置信息和多普勒参考信息可以携带在同一SIB中，或者不同SIB中。
可选地，该网络设备可以通过发送配置索引的方式，向上述终端设备发送上述随机接入前导配置信息。对应地，该终端设备在接收到配置索引后，根据该配置索引查询预设随机接入前导配置表格获取到上述随机接入前导配置信息。
类似地，该网络设备可以通过发送多普勒参考索引的方式，向上述终端设备发送上述多普勒参考信息。对应地，该终端设备在接收到多普勒参考索引后，根据该多普勒参考索引查询预设多普勒参考索引表格获取到上述多普勒参考信息。
应理解，上述预设随机接入前导配置表格和预设多普勒参考索引表格可以由系统预置的，或者由上述网络设备预置的；当然，还可以通过其它方式预置的，本申请实施例中对此不做限定。
当然，该网络设备还可以通过其它方式发送上述随机接入前导配置信息和多普勒参考信息，本申请实施例中对此并不做限定。
示例性地，上述多普勒参考信息用于指示将该网络设备的预设覆盖区域划分为至少两个子覆盖区域，该预设覆盖区域由一个或者多个相邻的波束组成。其中，不同子覆盖区域对应的上述随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该网络设备之间的距离成正向关系，或者理解为：任意子覆盖区域和该网络设备之间的距离越长，则该子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度越长。
为了便于理解，本申请实施例中对任意子覆盖区域和该网络设备之间的距离进行介绍：
一种可能的实现方式中，任意子覆盖区域和该网络设备之间的距离是指：该子覆盖区域中距离该网络设备最远的点，与该网络设备之间的距离。
另一种可能的实现方式中，任意子覆盖区域和该网络设备之间的距离是指：该子覆盖区域中距离该网络设备最近的点，与该网络设备之间的距离。
另一种可能的实现方式中，任意子覆盖区域和该网络设备之间的距离是指：该子覆盖区域的中心点与该网络设备之间的距离。
当然，上述任意子覆盖区域和该网络设备之间的距离还可以包括其它含义，本申请实施例中对此不做限定。
示例性地，上述多普勒参考信息可以包括但不限于：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同 的多普勒变化率阈值对应不同的子覆盖区域。
一种可能的实现方式中，若上述多普勒参考信息可以包括但不限于：n个多普勒阈值，则上述n个多普勒阈用于将上述网络设备的预设覆盖区域划分为n+1个子覆盖区域，其中，n为大于0的整数，不同的多普勒阈值对应不同的子覆盖区域。
图6为本申请实施例提供的网络设备的覆盖区域的划分示意图一，如图6所示，假设该网络设备为在经纬度(0,0)的正上方沿着赤道方向由西向东运动的卫星设备，该卫星设备的轨道高度为1200km，最小仰角为10度。图6中的虚线表示该卫星设备的覆盖区域中的多普勒阈值等高线，黑色直线表示该卫星设备的运动轨迹在地球表面的投影，黑色直线上的圆圈表示该卫星设备的覆盖区域中的一个预设覆盖区域。
如图6所示，若上述多普勒参考信息可以包括：多普勒阈值D1和多普勒阈值D2，则上述多普勒阈值D1等高线和多普勒阈值D2等高线将上述网络设备的预设覆盖区域划分为3个子覆盖区域。
表1为本申请实施例提供的预设多普勒信息、多普勒参考信息、子覆盖区域和随机接入前导格式信息之间的映射信息表一。结合图6和表1所示，多普勒信息包括多普勒值D，多普勒参考信息包括多普勒阈值D1和多普勒阈值D2，用于将上述预设覆盖区域划分成子覆盖区域1、子覆盖区域2和子覆盖区域3。
其中，子覆盖区域1与该卫星设备之间的距离大于子覆盖区域2与该卫星设备之间的距离，子覆盖区域2与该卫星设备之间的距离大于子覆盖区域3与该卫星设备之间的距离。对应地，子覆盖区域1对应的随机接入前导格式信息1所指示的随机接入前导的长度，大于子覆盖区域2对应的随机接入前导格式信息2所指示的随机接入前导的长度；子覆盖区域2对应的随机接入前导格式信息2所指示的随机接入前导的长度，大于子覆盖区域3对应的随机接入前导格式信息3所指示的随机接入前导的长度。
表1为本申请实施例提供的预设多普勒信息、多普勒参考信息、子覆盖区域和随机接入前导格式信息之间的映射信息表一
Figure PCTCN2020128082-appb-000001
应理解，若上述普勒值D等于多普勒阈值D1，则上述普勒值D所属位置也可以属于子覆盖区域1；和/或，若上述普勒值D等于多普勒阈值D2，则上述普勒值D所属位置也可以属于子覆盖区域3。需要说明的是，下述表2和表3中关于“等号”的变形情况也可以按照类似的变形方式处理。
应理解，如上所述实现方式中所列举的表1中的随机接入前导格式信息所指示的随机接入前导的长度关系只是一种可能的举例，不排除相邻的不同子覆盖区域对应的随机接入前导具有相同的序列长度。例如，上述表1中相邻的子覆盖区域1和子覆盖区域2对应的随机接入前导格式信息所指示的随机接入前导的长度相同。或者说，与卫星设备之间的距离较大的子覆盖区域对应的随机接入前导的长度不短于与卫星设备之间的距离较小的子覆盖区域对应的随机接入前导的长度。
在这种情况下，距离卫星设备较近的子覆盖区域的终端设备受到信道多普勒频移的影响较小，可以使用子载波间隔相对较小的随机接入前导格式信息(或者称之为随机接入前导格式)。而距离卫星设备较远的子覆盖区域的终端设备受到信道多普勒频移的影响较大，需要使用子载波间隔较大的随机接入前导格式。而较大的子载波间隔意味着随机接入前导占用较少的时域资源。因此，当考虑了不同子覆盖区域中多普勒频移对随机接入前导子载波间隔的需求时，不同子覆盖区域对应的随机接入前导可能具有相同的序列长度。同时，可以根据不同子覆盖区域的面积大小等因素给不同子覆盖区域分配不同数量的随机接入前导根序列的预选池和对应的时频资源。例如，给面积较大的子覆盖区域分配较多数量的随机接入前导根序列的预选池和相应的较多数量的时频资源。
综上，本申请实施例可以为不同子覆盖区域配置灵活的、满足性能需求的随机接入前导格式，以达到优化系统资源配置的目的。
另一种可能的实现方式中，若上述多普勒参考信息可以包括但不限于：m个多普勒变化率阈值，则上述m个多普勒变化率阈值用于将上述网络设备的预设覆盖区域划分为m+1个子覆盖区域，其中，m为大于0的整数，不同的多普勒变化率阈值对应不同的子覆盖区域。
图7为本申请实施例提供的网络设备的覆盖区域的划分示意图二，如图7所示，假设该网络设备为在经纬度(0,0)的正上方沿着赤道方向由西向东运动的卫星设备，该卫星设备的轨道高度为1200km，最小仰角为10度。图7中的实线表示该卫星设备的覆盖区域中的多普勒变化率阈值，黑色直线表示该卫星设备的运动轨迹在地球表面的投影，图7中部的圆圈表示该卫星设备的覆盖区域中的一个预设覆盖区域。
如图7所示，若上述多普勒参考信息可以包括：多普勒变化率阈值DR1、多普勒变化率阈值DR2和多普勒变化率阈值DR3，则上述多普勒变化率阈值DR1等高线、多普勒变化率阈值DR2等高线和多普勒变化率阈值DR3等高线将上述网络设备的预设覆盖区域划分为4个子覆盖区域。
表2为本申请实施例提供的预设多普勒信息、多普勒参考信息、子覆盖区域和随机接入前导格式信息之间的映射信息表二。结合图7和表2所示，多普勒信息包括多普勒变化率值DR，多普勒参考信息包括多普勒变化率阈值DR1、多普勒变化率阈值DR2和多普勒变化率阈值DR3，用于将上述预设覆盖区域划分成子覆盖区域1、子覆盖区域2、子覆盖区域3和子覆盖区域4。
其中，子覆盖区域1与该卫星设备之间的距离大于子覆盖区域2与该卫星设备之间的距离，子覆盖区域2与该卫星设备之间的距离大于子覆盖区域3与该卫星设备之间的距离，子覆盖区域3与该卫星设备之间的距离大于子覆盖区域4与该卫星设备之间的距离。
对应地，子覆盖区域1对应的随机接入前导格式信息1所指示的随机接入前导的长度，大于子覆盖区域2对应的随机接入前导格式信息2所指示的随机接入前导的长度；子覆盖区域2对应的随机接入前导格式信息2所指示的随机接入前导的长度，大于子覆盖区域3对应的随机接入前导格式信息3所指示的随机接入前导的长度；子覆盖区域3对应的随机接入前导格式信息3所指示的随机接入前导的长度，大于子覆盖区域4对应的随机接入前导格式信息4所指示的随机接入前导的长度。
表2为本申请实施例提供的预设多普勒信息、多普勒参考信息、子覆盖区域和随机接入前导格式信息之间的映射信息表二
Figure PCTCN2020128082-appb-000002
应理解，若上述多普勒变化率值DR等于多普勒变化率值DR1，则上述普勒变化率值DR所属位置也可以属于子覆盖区域1；若上述普勒变化率值DR等于多普勒变化率值DR2，则上述普勒变化率值DR所属位置也可以属于子覆盖区域3；和/或，若上述普勒变化率值DR等于多普勒变化率值DR3，则上述普勒变化率值DR所属位置也可以属于子覆盖区域3。
应理解，如上所述实现方式中所列举的表2中的随机接入前导格式信息所指示的随机接入前导的长度关系只是一种可能的举例，不排除相邻的不同子覆盖区域对应的随机接入前导具有相同的序列长度。例如，上述表2中相邻的子覆盖区域2和子覆盖区域3对应的随机接入前导格式信息所指示的随机接入前导的长度相同。或者说，与卫星设备之间的距离较大的子覆盖区域对应的随机接入前导的长度不短于与卫星设备之间的距离较小的子覆盖区域对应的随机接入前导的长度。
在这种情况下，距离卫星设备较近的子覆盖区域的终端设备受到信道多普勒频移的影响较小，可以使用子载波间隔相对较小的随机接入前导格式。而距离卫星设备较远的子覆盖区域的终端设备受到信道多普勒频移的影响较大，需要使用子载波间隔较大的随机接入前导格式。而较大的子载波间隔意味着随机接入前导占用较少的时域资源。因此，当考虑了不同子覆盖区域中多普勒频移对随机接入前导子载波间隔的需求时，不同子覆盖区域对应的随机接入前导可能具有相同的序列长度。同时，可以根据不同子覆盖区域的面积大小等因素给不同子覆盖区域分配不同数量的随机接入前导根序列的预选池和对应的时频资源。例如，给面积较大的子覆盖区域分配较多数量的随机接入前导根序列的预选池和相应的较多数量的时频资源。
综上，本申请实施例可以为不同子覆盖区域配置灵活的、满足性能需求的随机接入前导格式，以达到优化系统资源配置的目的。
另一种可能的实现方式中，若上述多普勒参考信息包括：n个多普勒阈值和m个多普勒变化率阈值，则上述n个多普勒阈值和m个多普勒变化率阈值用于将上述网络设备的预设覆盖区域划分为(n+1)*(m+1)个子覆盖区域，其中，不同的多普勒阈值和多普勒变化率阈值对应不同的子覆盖区域。
图8为本申请实施例提供的网络设备的覆盖区域的划分示意图三，如图8所示，假设该网络设备为在经纬度(0,0)的正上方沿着赤道方向由西向东运动的卫星设备，该卫星设备的轨道高度为1200km，最小仰角为10度。图8中的虚线表示该卫星设备的覆盖区域中的多普勒阈值等高线，实线表示多普勒变化率阈值等高线，黑色直线表示该卫星设备的运动轨迹在地球表面的投影，如图8左上部分的圆圈表示该卫星设备的覆盖区域中的一个预设覆盖区域。
如图8所示，若上述多普勒参考信息包括：多普勒阈值D1、多普勒变化率阈值DR1和多普勒变化率阈值DR2，则上述多普勒阈值D1等高线、多普勒变化率阈值DR1等高线和多普 勒变化率阈值DR2等高线用于将上述网络设备的预设覆盖区域划分为6个子覆盖区域。
表3为本申请实施例提供的预设多普勒信息、多普勒参考信息、子覆盖区域和随机接入前导格式信息之间的映射信息表三。结合图8和表3所示，多普勒信息包括多普勒值D和多普勒变化率值DR，多普勒参考信息包括多普勒阈值D1、多普勒变化率阈值DR1和多普勒变化率阈值DR2，用于将上述预设覆盖区域划分成子覆盖区域1、子覆盖区域2、子覆盖区域3、子覆盖区域4、子覆盖区域5和子覆盖区域6。
其中，以子覆盖区域2和子覆盖区域3为例，子覆盖区域2与该卫星设备之间的距离大于子覆盖区域3与该卫星设备之间的距离。对应地，子覆盖区域2对应的随机接入前导格式信息2所指示的随机接入前导的长度，大于子覆盖区域3对应的随机接入前导格式信息3所指示的随机接入前导的长度。
表3为本申请实施例提供的预设多普勒信息、多普勒参考信息、子覆盖区域和随机接入前导格式信息之间的映射信息表三
Figure PCTCN2020128082-appb-000003
应理解，上述表3中关于“等号”的变形情况，可以按照上述表1或表2中关于“等号”的变形处理方式。例如，若上述普勒值D等于多普勒阈值D1，且上述多普勒变化率值DR等于多普勒变化率值DR1，则上述普勒值D和多普勒变化率值DR所属位置还可以属于子覆盖区域1、子覆盖区域2或子覆盖区域4。应理解，如上所述实现方式中所列举的表3中的随机接入前导格式信息所指示的随机接入前导的长度关系只是一种可能的举例，不排除相邻不同子覆盖区域对应的随机接入前导具有相同的序列长度。例如，上述表3中相邻的子覆盖区域2或子覆盖区域4对应的随机接入前导格式信息所指示的随机接入前导的长度相同。或者说，与卫星设备之间的距离较大的子覆盖区域对应的随机接入前导的长度不短于与卫星设备之间的距离较小的子覆盖区域对应的随机接入前导的长度。
在这种情况下，距离卫星设备较近的子覆盖区域的终端设备受到信道多普勒频移的影响较小，可以使用子载波间隔相对较小的随机接入前导格式。而距离卫星设备较远的子覆盖区域的终端设备受到信道多普勒频移的影响较大，需要使用子载波间隔较大的随机接入前导格式。而较大的子载波间隔意味着随机接入前导占用较少的时域资源。因此，当考虑了不同子覆盖区域中多普勒频移对随机接入前导子载波间隔的需求时，不同子覆盖区域对应的随机接入前导可能具有相同的序列长度。同时，可以根据不同子覆盖区域的面积大小等因素给不同子覆盖区域分配不同数量的随机接入前导根序列的预选池和对应的时频资源。例如，给面积较大的子覆盖区域分配较多数量的随机接入前导根序列的预选池和相应的较多数量的时频资源。
综上，本申请实施例可以为不同子覆盖区域配置灵活的、满足性能需求的随机接入前导格式，以达到优化系统资源配置的目的。
需要说明的是，上述预设覆盖区域中子覆盖区域的划分方式还可以采用其它方式，本申请实施例中并不做限定。
步骤S502、终端设备根据该终端设备在该网络设备的该预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息。
可选地，上述目标子覆盖区域与该终端设备所属位置的上述多普勒信息和从上述网络设备获取的上述多普勒参考信息相关联。
示例性地，该终端设备在执行步骤S502之前，可以根据上述网络设备发送的下行信号确定出该终端设备所属位置的多普勒信息。例如，该终端设备通过检测上述网络设备所发送的下行信号所在频点的频偏，进而根据该频偏确定出该终端设备所属位置的多普勒信息，其中，该下行信号可以包括但不限于：同步广播块(synchronization signal/PBCH block,SSB)信号，或其它同步信号。
当然，该终端设备还可以通过其它方式确定该终端设备所属位置的多普勒信息，本申请实施例中对此不做限定。
示例性地，该终端设备可以根据该终端设备所属位置的上述多普勒信息和从上述网络设备获取的上述多普勒参考信息，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
一种可能的实现方式：若上述多普勒参考信息包括：至少一个多普勒阈值，对应地，上述多普勒信息包括：多普勒值，则该终端设备根据该终端设备所属位置的多普勒值和上述至少一个多普勒阈值，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
例如，结合图6和上述表1所示，若上述多普勒参考信息可以包括：多普勒阈值D1和多普勒阈值D2，上述多普勒阈值D1等高线和多普勒阈值D2等高线将上述网络设备的预设覆盖区域划分为3个子覆盖区域，则该终端设备根据该终端设备所属位置的多普勒值D、上述多普勒阈值D1和多普勒阈值D2，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
应理解，若该终端设备所属位置的多普勒值D大于上述多普勒阈值D1，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域1。或者，若该终端设备所属位置的多普勒值D小于等于上述多普勒阈值D1，且大于等于上述多普勒阈值D2，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域2。或者，若该终端设备所属位置的多普勒值D小于上述多普勒阈值D2，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域3。
需要说明的是，若上述普勒值D所属位置可以同时属于至少两个子覆盖区域时，上述终端设备可以从上述至少两个子覆盖区域中随机选择一个子覆盖区域作为目标子覆盖区域。或者，上述终端设备可以根据每个该子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，从上述至少两个子覆盖区域中选择目标子覆盖区域，其中，该目标子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度最短。当然，上 述终端设备还可以通过其它方式，从上述至少两个子覆盖区域中选择出目标子覆盖区域，本申请实施例中对此并不做限定。
另一种可能的实现方式：若上述多普勒参考信息包括：至少一个多普勒变化率阈值，对应地，上述多普勒信息包括：多普勒变化率值，则该终端设备根据该终端设备所属位置的多普勒变化率值和上述至少一个多普勒变化率阈值，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
例如，结合图7和上述表2所示，若上述多普勒参考信息可以包括：多普勒变化率阈值DR1、多普勒变化率阈值DR2和多普勒变化率阈值DR3，上述多普勒变化率阈值DR1等高线、多普勒变化率阈值DR2等高线和多普勒变化率阈值DR3等高线将上述网络设备的预设覆盖区域划分为4个子覆盖区域，则该终端设备根据该终端设备所属位置的多普勒变化率值DR、上述多普勒变化率阈值DR1、多普勒变化率阈值DR2和多普勒变化率阈值DR3，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
应理解，若该终端设备所属位置的多普勒变化率值DR大于上述多普勒变化率阈值DR1，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域1。或者，若该终端设备所属位置的多普勒变化率值DR小于等于上述多普勒变化率阈值DR1，且大于等于上述多普勒变化率阈值DR2，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域2。或者，若该终端设备所属位置的多普勒变化率值DR小于上述多普勒变化率阈值DR2，且大于上述多普勒变化率阈值DR3，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域3。或者，若该终端设备所属位置的多普勒变化率值DR小于等于上述多普勒变化率阈值DR3，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域4。
需要说明的是，若上述多普勒变化率值DR所属位置可以同时属于至少两个子覆盖区域时，上述终端设备可以从上述至少两个子覆盖区域中随机选择一个子覆盖区域作为目标子覆盖区域。或者，上述终端设备可以根据每个该子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，从上述至少两个子覆盖区域中选择目标子覆盖区域，其中，该目标子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度最短。当然，上述终端设备还可以通过其它方式，从上述至少两个子覆盖区域中选择出目标子覆盖区域，本申请实施例中对此并不做限定。
另一种可能的实现方式：若上述多普勒参考信息包括：至少一个多普勒阈值和至少一个多普勒变化率阈值，对应地，上述多普勒信息包括：多普勒值和多普勒变化率值，则该终端设备根据该终端设备所属位置的多普勒值、多普勒变化率值、上述至少一个多普勒阈值和至少一个多普勒变化率阈值，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
例如，结合图8和上述表3所示，若上述多普勒参考信息可以包括：多普勒阈值D1、多普勒变化率阈值DR1和多普勒变化率阈值DR2，上述多普勒阈值D1等高线、多普勒变化率阈值DR1等高线和多普勒变化率阈值DR2等高线将上述网络设备的预设覆盖区域划分为6个子覆盖区域，则该终端设备根据该终端设备所属位置的多普勒值D和多普勒变化 率值DR、上述多普勒阈值D1、多普勒变化率阈值DR1以及多普勒变化率阈值DR2，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。
应理解，若该终端设备所属位置的多普勒值D小于等于上述多普勒阈值D1，且多普勒变化率值DR大于上述多普勒变化率阈值DR1，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域1。或者，若该终端设备所属位置的多普勒值D大于上述多普勒阈值D1，且多普勒变化率值DR大于上述多普勒变化率阈值DR1，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域2。
或者，若该终端设备所属位置的多普勒值D小于等于上述多普勒阈值D1，上述多普勒变化率值DR小于等于上述多普勒变化率阈值DR1，且大于等于上述多普勒变化率阈值DR2，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域3。或者，若该终端设备所属位置的多普勒值D大于上述多普勒阈值D1，上述多普勒变化率值DR小于等于上述多普勒变化率阈值DR1，且大于等于上述多普勒变化率阈值DR2，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域4。
或者，若该终端设备所属位置的多普勒值D小于等于上述多普勒阈值D1，且上述多普勒变化率值DR小于上述多普勒变化率阈值DR2，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域5。或者，若该终端设备所属位置的多普勒值D大于上述多普勒阈值D1，且上述多普勒变化率值DR小于上述多普勒变化率阈值DR2，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域6。
需要说明的是，若上述多普勒值D和多普勒变化率值DR所属位置可以同时属于至少两个子覆盖区域时，上述终端设备可以从上述至少两个子覆盖区域中随机选择一个子覆盖区域作为目标子覆盖区域。或者，上述终端设备可以根据每个该子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，从上述至少两个子覆盖区域中选择目标子覆盖区域，其中，该目标子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度最短。当然，上述终端设备还可以通过其它方式，从上述至少两个子覆盖区域中选择出目标子覆盖区域，本申请实施例中对此并不做限定。
应理解，该终端设备在执行步骤S502之前，接收上述网络设备发送的上述多普勒参考信息。但需要说明的是，该终端设备不需要每次执行上述步骤S502之前都接收上述网络设备发送的上述多普勒参考信息，可以根据具体应用场景来确定。
进一步地，该终端设备可以根据预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的至少两个随机接入前导格式信息中确定与所述目标子覆盖区域对应的目标随机接入前导格式信息。
本申请实施例中，该终端设备中预配置有上述预设子覆盖区域与随机接入前导格式信息之间的映射信息，如上述表1-表3所示的预设子覆盖区域与随机接入前导格式信息之间的映射信息，其中，该预设子覆盖区域与随机接入前导格式信息之间的映射信息中可以包括但不限于：上述目标子覆盖区域与该目标随机接入前导格式信息之间的映射信息。应理解，上述预设子覆盖区域与随机接入前导格式信息之间的映射信息中还可以包括：其它子覆盖 区域与该子覆盖区域对应的随机接入前导格式信息之间的映射信息。
需要说明的是，上述预设子覆盖区域与随机接入前导格式信息之间的映射信息的表达形式不局限于表格形式，还可以采用其它表达形式。
应理解，该终端设备中的上述预设子覆盖区域与随机接入前导格式信息之间的映射信息可以由系统预置的，或者由上述网络设备预置的。
示例性地，上述网络设备可以将上述预设子覆盖区域与随机接入前导格式信息之间的映射信息发送给上述终端设备。例如，上述网络设备可以将上述预设子覆盖区域与随机接入前导格式信息之间的映射信息承载于系统信息块(system information block，SIB)1、其他系统消息(other system information，OSI)、主系统信息块(mater information block，MIB)等的广播信息中的至少一种消息中向上述终端设备广播发送或或组播发送。如果在无线资源控制(radio resource control，RRC)连接阶段发送(更新该映射关系，提供给上述终端设备在中断后再次申请接入系统)，上述网络设备可以将更新后的上述映射信息承载于RRC信息、下行控制信息(downlink control information，DCI)、组DCI、介质访问控制(media access control，MAC)元素(element)中的至少一种信息中向上述终端设备发送，或者随数传或在单独分配的物理下行共享信道(physical downlink shared channel，PDSCH)中向上述终端设备发送。
当然，该终端设备中的上述预设子覆盖区域与随机接入前导格式信息之间的映射信息还可以为通过其它方式获取的，本申请实施例中对此不做限定。
一种可能的实现方式中，若该终端设备根据该终端设备所属位置的多普勒值D、上述多普勒阈值D1和多普勒阈值D2，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为如上述表1中的子覆盖区域1，则该终端设备可以根据如上述表1所示的预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的随机接入前导格式信息1～随机接入前导格式信息3中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息(如上述表1中的随机接入前导格式信息1)。
另一种可能的实现方式中，若该终端设备根据该终端设备所属位置的多普勒变化率值DR、上述多普勒变化率阈值DR1、多普勒变化率阈值DR2和多普勒变化率阈值DR3，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为如上述表2中的子覆盖区域2，则该终端设备可以根据如上述表2所示的预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的随机接入前导格式信息1～随机接入前导格式信息4中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息(如上述表2中的随机接入前导格式信息2)。
另一种可能的实现方式中，若该终端设备根据该终端设备所属位置的多普勒值D和多普勒变化率值DR、上述多普勒阈值D1、多普勒变化率阈值DR1和多普勒变化率阈值DR2，确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为如上述表3中的子覆盖区域3，则该终端设备可以根据如上述表3所示的预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的随机接入前导格式信息1～随机接入前导格式信息6中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息(如上述表3中的随机接入前导格式信息3)。
应理解，该终端设备在执行步骤S502之前，接收上述网络设备发送的上述随机接入前 导配置信息；其中，该随机接入前导配置信息中包括：上述至少两个随机接入前导格式信息，以每个随机接入前导格式信息对应的随机接入前导时频资源信息。但需要说明的是，该终端设备不需要每次执行上述步骤S502之前都接收上述网络设备发送的上述随机接入前导配置信息，可以根据具体应用场景来确定。
需要说明的是，该终端设备也可以无需执行上述确定目标子覆盖区域的步骤，可以根据预设多普勒信息、多普勒参考信息和随机接入前导格式信息之间的映射信息(例如上述表1～表3中所示的多普勒信息与多普勒参考信息的比对，和对应的随机接入前导格式信息)，确定与该终端设备所属位置的多普勒信息对应的目标随机接入前导格式信息。
步骤S503、该终端设备在目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。
本申请实施例中，该终端设备中预先获取有上述网络设备发送的上述随机接入前导配置信息；其中，该随机接入前导配置信息中包括：上述至少两个随机接入前导格式信息，以每个随机接入前导格式信息对应的随机接入前导时频资源信息。
本步骤中，该终端设备可以从上述网络设备发送的每个随机接入前导格式信息对应的随机接入前导时频资源信息中，确定出与上述目标随机接入前导格式信息对应的随机接入前导时频资源信息作为目标随机接入前导时频资源信息，并在该目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。
步骤S504、该网络设备接收该终端设备在该目标时频资源上发送的该随机接入前导。
本步骤中，该网络设备接收该终端设备在上述目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备所发送的与上述目标随机接入前导格式信息对应的随机接入前导。其中，该目标随机接入前导时频资源信息为该网络设备向该终端设备所发送的至少两个随机接入前导时频资源信息中与该目标随机接入前导格式信息对应的随机接入前导时频资源信息。该目标随机接入前导格式信息为该网络设备向该终端设备所发送的上述至少两个随机接入前导格式信息中的一个随机接入前导格式信息，且该目标随机接入前导格式信息与该终端设备在该网络设备的预设覆盖区域中的至少两个子覆盖区域中所属的目标子覆盖区域相关联。
综上所述，本申请实施例中，通过网络设备向终端设备发送随机接入前导配置信息和多普勒参考信息，其中，上述随机接入前导配置信息中可以包括但不限于：至少两个随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息；上述多普勒参考信息用于指示将该网络设备的预设覆盖区域划分为至少两个子覆盖区域。对应地，终端设备根据上述多普勒参考信息确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。可见，相比于相关技术中的位于同一小区的终端设备所发送的随机接入前导的长度均相同的方式，本申请实施例中的任意终端设备可以根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采用与该目标子覆盖区域对应的随机接入前导格式信息发送随机接入前导，使得距离该 网络设备越近的终端设备所发送的随机接入前导的长度越短，距离该网络设备越远的终端设备所发送的随机接入前导的长度越长，从而可以节省用于传输随机接入前导的时频资源。
需要说明的是，在上述终端设备每次执行步骤S502之前，上述网络设备不需要每次都相应地执行上述步骤S501，可以根据具体应用场景来确定。
图9为本申请另一实施例提供的随机接入前导的传输方法的流程示意图。在上述实施例的基础上，本申请实施例中对上述多普勒参考信息包括至少一个多普勒阈值，对应地，上述多普勒信息包括多普勒值时的可实现方式进行介绍。如图9所示，本申请实施例的方法可以包括：
步骤S901、网络设备向终端设备发送随机接入前导配置信息和至少一个多普勒阈值。
示例性地，该至少一个多普勒阈值可以包括：多普勒阈值D1和多普勒阈值D2。如图6所示，上述多普勒阈值D1等高线和多普勒阈值D2等高线将上述网络设备的一个预设覆盖区域(如图6中的圆圈所示区域)划分为子覆盖区域1、子覆盖区域2和子覆盖区域3。
上述随机接入前导配置信息中可以包括与上述子覆盖区域对应的随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息。例如，上述随机接入前导配置信息中可以包括：与上述子覆盖区域1对应的随机接入前导格式信息1、与上述子覆盖区域2对应的随机接入前导格式信息2、与上述子覆盖区域3对应的随机接入前导格式信息3、上述随机接入前导格式信息1对应的随机接入前导时频资源信息1、上述随机接入前导格式信息2对应的随机接入前导时频资源信息2，以及上述随机接入前导格式信息3对应的随机接入前导时频资源信息3。
步骤S902、该终端设备根据该终端设备所属位置的多普勒值和上述至少一个多普勒阈值，确定该终端设备在该网络设备的该预设覆盖区域中所属的目标子覆盖区域。
示例性地，该终端设备可以根据上述表1所示的预设多普勒信息、多普勒参考信息和子覆盖区域之间的映射信息、该终端设备所属位置的多普勒值D、上述多普勒阈值D1和多普勒阈值D2，便可确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。例如，若该终端设备所属位置的多普勒值D大于上述多普勒阈值D1，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域1。
步骤S903、该终端设备确定与该目标子覆盖区域对应的目标随机接入前导格式信息，以及与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息。
示例性地，该终端设备可以根据上述表1所示的预设子覆盖区域和随机接入前导格式信息之间的映射信息，从上述随机接入前导格式信息1～随机接入前导格式信息3中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息，如上述随机接入前导格式信息1。
进一步地，该终端设备可以确定出与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息，如上述随机接入前导时频资源信息1。
步骤S904、该终端设备在该目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。
步骤S905、该网络设备接收该终端设备在该目标时频资源上发送的该随机接入前导。
需要说明的是，该终端设备也可以无需执行上述确定目标子覆盖区域的步骤，可以根 据预设多普勒信息、多普勒参考信息和随机接入前导格式信息之间的映射信息(例如上述表1中所示的多普勒信息与多普勒参考信息的比对，和对应的随机接入前导格式信息)，确定与该终端设备所属位置的多普勒信息对应的目标随机接入前导格式信息。
综上所述，本申请实施例中，通过网络设备向终端设备发送随机接入前导配置信息和至少一个多普勒阈值，其中，上述随机接入前导配置信息中可以包括但不限于：至少两个随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息；上述至少一个多普勒阈值用于指示将该网络设备的预设覆盖区域划分为至少两个子覆盖区域。对应地，终端设备根据上述至少一个多普勒阈值确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。可见，本申请实施例中的任意终端设备可以根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采用与该目标子覆盖区域对应的随机接入前导格式信息发送随机接入前导，使得距离该网络设备越近的终端设备所发送的随机接入前导的长度越短，距离该网络设备越远的终端设备所发送的随机接入前导的长度越长，从而可以节省用于传输随机接入前导的时频资源。
需要说明的是，在上述终端设备每次执行步骤S902之前，上述网络设备不需要每次都相应地执行上述步骤S901，可以根据具体应用场景来确定。
图10为本申请另一实施例提供的随机接入前导的传输方法的流程示意图。在上述实施例的基础上，本申请实施例中对上述多普勒参考信息包括至少一个多普勒变化率阈值，对应地，上述多普勒信息包括多普勒变化率值时的可实现方式进行介绍。如图10所示，本申请实施例的方法可以包括：
步骤S1001、网络设备向终端设备发送随机接入前导配置信息和至少一个多普勒变化率阈值。
示例性地，该至少一个多普勒变化率阈值可以包括：多普勒变化率阈值DR1、多普勒变化率阈值DR2和多普勒变化率阈值DR3。如图7所示，上述多普勒变化率阈值DR1等高线、多普勒变化率阈值DR2等高线和多普勒变化率阈值DR3等高线将上述网络设备的一个预设覆盖区域(如图7中的圆圈所示区域)划分为子覆盖区域1、子覆盖区域2、子覆盖区域3和子覆盖区域4。
上述随机接入前导配置信息中可以包括与上述子覆盖区域对应的随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息。例如，上述随机接入前导配置信息中可以包括：与上述子覆盖区域1对应的随机接入前导格式信息1、与上述子覆盖区域2对应的随机接入前导格式信息2、与上述子覆盖区域3对应的随机接入前导格式信息3、与上述子覆盖区域4对应的随机接入前导格式信息4、上述随机接入前导格式信息1对应的随机接入前导时频资源信息1、上述随机接入前导格式信息2对应的随机接入前导时频资源信息2、上述随机接入前导格式信息3对应的随机接入前导时频资源信息3，以及上述随机接入前导格式信息4对应的随机接入前导时频资源信息4。
步骤S1002、该终端设备根据该终端设备所属位置的多普勒变化率值和上述至少一个 多普勒变化率阈值，确定该终端设备在该网络设备的该预设覆盖区域中所属的目标子覆盖区域。
示例性地，该终端设备可以根据上述表2所示的预设多普勒信息、多普勒参考信息和子覆盖区域之间的映射信息、该终端设备所属位置的多普勒变化率值DR、上述多普勒变化率阈值DR1、多普勒变化率阈值DR2和多普勒变化率阈值DR3，便可确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。例如，若该终端设备所属位置的多普勒变化率值DR大于上述多普勒变化率阈值DR1，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域1。
步骤S1003、该终端设备确定与该目标子覆盖区域对应的目标随机接入前导格式信息，以及与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息。
示例性地，该终端设备可以根据上述表2所示的预设子覆盖区域和随机接入前导格式信息之间的映射信息，从上述随机接入前导格式信息1～随机接入前导格式信息4中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息，如上述随机接入前导格式信息1。
进一步地，该终端设备可以确定出与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息，如上述随机接入前导时频资源信息1。
步骤S1004、该终端设备在该目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。
步骤S1005、该网络设备接收该终端设备在该目标时频资源上发送的该随机接入前导。
需要说明的是，该终端设备也可以无需执行上述确定目标子覆盖区域的步骤，可以根据预设多普勒信息、多普勒参考信息和随机接入前导格式信息之间的映射信息(例如上述表2中所示的多普勒信息与多普勒参考信息的比对，和对应的随机接入前导格式信息)，确定与该终端设备所属位置的多普勒信息对应的目标随机接入前导格式信息。
综上所述，本申请实施例中，通过网络设备向终端设备发送随机接入前导配置信息和至少一个多普勒变化率阈值，其中，上述随机接入前导配置信息中可以包括但不限于：至少两个随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息；上述至少一个多普勒变化率阈值用于指示将该网络设备的预设覆盖区域划分为至少两个子覆盖区域。对应地，终端设备根据上述至少一个多普勒变化率阈值确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。可见，本申请实施例中的任意终端设备可以根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采用与该目标子覆盖区域对应的随机接入前导格式信息发送随机接入前导，使得距离该网络设备越近的终端设备所发送的随机接入前导的长度越短，距离该网络设备越远的终端设备所发送的随机接入前导的长度越长，从而可以节省用于传输随机接入前导的时频资源。
需要说明的是，在上述终端设备每次执行步骤S1002之前，上述网络设备不需要每次都相应地执行上述步骤S1001，可以根据具体应用场景来确定。
图11为本申请另一实施例提供的随机接入前导的传输方法的流程示意图。在上述实 施例的基础上，本申请实施例中对上述多普勒参考信息包括至少一个多普勒阈值和至少一个多普勒变化率阈值，对应地，上述多普勒信息包括多普勒值和多普勒变化率值时的可实现方式进行介绍。如图11所示，本申请实施例的方法可以包括：
步骤S1101、网络设备向终端设备发送随机接入前导配置信息、至少一个多普勒阈值和至少一个多普勒变化率阈值。
示例性地，该至少一个多普勒阈值可以包括：多普勒阈值D1，该至少一个多普勒变化率阈值可以包括：多普勒变化率阈值DR1和多普勒变化率阈值DR2。如图8所示，上述多普勒阈值D1等高线、上述多普勒变化率阈值DR1等高线和多普勒变化率阈值DR2等高线将上述网络设备的一个预设覆盖区域(如图8中的圆圈所示区域)划分为子覆盖区域1、子覆盖区域2、子覆盖区域3、子覆盖区域4、子覆盖区域5和子覆盖区域6。
上述随机接入前导配置信息中可以包括与上述子覆盖区域对应的随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息。例如，上述随机接入前导配置信息中可以包括：与上述子覆盖区域1对应的随机接入前导格式信息1、与上述子覆盖区域2对应的随机接入前导格式信息2、与上述子覆盖区域3对应的随机接入前导格式信息3、与上述子覆盖区域4对应的随机接入前导格式信息4、与上述子覆盖区域5对应的随机接入前导格式信息5、与上述子覆盖区域6对应的随机接入前导格式信息6、上述随机接入前导格式信息1对应的随机接入前导时频资源信息1、上述随机接入前导格式信息2对应的随机接入前导时频资源信息2、上述随机接入前导格式信息3对应的随机接入前导时频资源信息3、上述随机接入前导格式信息4对应的随机接入前导时频资源信息4、上述随机接入前导格式信息5对应的随机接入前导时频资源信息5，以及上述随机接入前导格式信息6对应的随机接入前导时频资源信息6。
步骤S1102、该终端设备根据该终端设备所属位置的多普勒值、多普勒变化率值、上述至少一个多普勒阈值和至少一个多普勒变化率阈值，确定该终端设备在该网络设备的该预设覆盖区域中所属的目标子覆盖区域。
示例性地，该终端设备可以根据上述表3所示的预设多普勒信息、多普勒参考信息和子覆盖区域之间的映射信息、该终端设备所属位置的多普勒值D、多普勒变化率值DR、上述多普勒变化率阈值DR1和多普勒变化率阈值DR2，便可确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域。例如，若该终端设备所属位置的多普勒值D小于等于上述多普勒阈值D1，且多普勒变化率值DR大于上述多普勒变化率阈值DR1，则该终端设备可以确定出该终端设备在上述网络设备的预设覆盖区域中所属的目标子覆盖区域为子覆盖区域1。
步骤S1103、该终端设备确定与该目标子覆盖区域对应的目标随机接入前导格式信息，以及与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息。
示例性地，该终端设备可以根据上述表3所示的预设子覆盖区域和随机接入前导格式信息之间的映射信息，从上述随机接入前导格式信息1～随机接入前导格式信息6中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息，如上述随机接入前导格式信息1。
进一步地，该终端设备可以确定出与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息，如上述随机接入前导时频资源信息1。
步骤S1104、该终端设备在该目标随机接入前导时频资源信息对应的目标时频资源上， 向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。
步骤S1105、该网络设备接收该终端设备在该目标时频资源上发送的该随机接入前导。
需要说明的是，该终端设备也可以无需执行上述确定目标子覆盖区域的步骤，可以根据预设多普勒信息、多普勒参考信息和随机接入前导格式信息之间的映射信息(例如上述表3中所示的多普勒信息与多普勒参考信息的比对，和对应的随机接入前导格式信息)，确定与该终端设备在该网络设备所属位置的多普勒信息对应的目标随机接入前导格式信息。
综上所述，本申请实施例中，通过网络设备向终端设备发送随机接入前导配置信息、至少一个多普勒阈值和至少一个多普勒变化率阈值，其中，上述随机接入前导配置信息中可以包括但不限于：至少两个随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息；上述至少一个多普勒阈值和至少一个多普勒变化率阈值用于指示将该网络设备的预设覆盖区域划分为至少两个子覆盖区域。对应地，终端设备根据上述至少一个多普勒阈值和至少一个多普勒变化率阈值确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导。可见，本申请实施例中的任意终端设备可以根据其在该网络设备的预设覆盖区域中所属的目标子覆盖区域，采用与该目标子覆盖区域对应的随机接入前导格式信息发送随机接入前导，使得距离该网络设备越近的终端设备所发送的随机接入前导的长度越短，距离该网络设备越远的终端设备所发送的随机接入前导的长度越长，从而可以节省用于传输随机接入前导的时频资源。
需要说明的是，在上述终端设备每次执行步骤S1102之前，上述网络设备不需要每次都相应地执行上述步骤S1101，可以根据具体应用场景来确定。
图12为本申请实施例提供的终端设备的结构示意图，如图12所示，本申请实施例的终端设备120可以包括：处理模块1201以及发送模块1202。
其中，处理模块1201，用于根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与该目标子覆盖区域对应的目标随机接入前导格式信息；其中，该预设覆盖区域由一个或者多个波束组成，该预设覆盖区域包括：至少两个子覆盖区域；
发送模块1202，用于在目标随机接入前导时频资源信息对应的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导，其中，该目标随机接入前导时频资源信息为与该目标随机接入前导格式信息对应的随机接入前导时频资源信息。
在一种可能的实现方式中，该目标子覆盖区域与该终端设备所属位置的多普勒信息和获取的多普勒参考信息相关联；其中，该至少两个子覆盖区域为根据该多普勒参考信息划分的。
在一种可能的实现方式中，该多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
在一种可能的实现方式中，若该多普勒参考信息包括：该至少一个多普勒阈值，对应 地，该多普勒信息包括：多普勒值；和/或，
若该多普勒参考信息包括：该至少一个多普勒变化率阈值，对应地，该多普勒信息包括：多普勒变化率值。
在一种可能的实现方式中，该终端设备120还包括：
接收模块，用于接收该网络设备发送的该多普勒参考信息。
在一种可能的实现方式中，该处理模块1201还用于：
根据该网络设备发送的下行信号确定该多普勒信息。
在一种可能的实现方式中，该处理模块1201具体用于：
根据预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的至少两个随机接入前导格式信息中确定与该目标子覆盖区域对应的目标随机接入前导格式信息；其中，该预设子覆盖区域与随机接入前导格式信息之间的映射信息中包括：该目标子覆盖区域与该目标随机接入前导格式信息之间的映射信息。
在一种可能的实现方式中，该终端设备120还包括：
接收模块，用于接收该网络设备发送的随机接入前导配置信息；其中，该随机接入前导配置信息中包括：该至少两个随机接入前导格式信息，以及该随机接入前导格式信息对应的随机接入前导时频资源信息。
在一种可能的实现方式中，不同子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该网络设备之间的距离成正向关系。
在一种可能的实现方式中，该目标随机接入前导格式信息包括以下至少一项：该随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
本申请实施例提供的终端设备120，可以用于执行本申请上述随机接入前导的传输方法实施例中关于终端设备的技术方案，其实现原理和技术效果类似，此处不再赘述。
图13为本申请实施例提供的网络设备的结构示意图，如图13所示，本申请实施例的网络设备130可以包括：发送模块1301以及接收模块1302。
其中，发送模块1301，用于发送随机接入前导配置信息和多普勒参考信息；其中，该随机接入前导配置信息中包括：至少两个随机接入前导格式信息，以及该随机接入前导格式信息对应的随机接入前导时频资源信息；该多普勒参考信息用于指示将网络设备的预设覆盖区域划分为至少两个子覆盖区域；该预设覆盖区域由一个或者多个波束组成；
接收模块1302，用于接收终端设备在目标时频资源上发送的随机接入前导；其中，该随机接入前导对应的目标随机接入前导格式信息为该至少两个随机接入前导格式信息中的一个随机接入前导格式信息，该目标随机接入前导格式信息与该终端设备在该至少两个子覆盖区域中所属的目标子覆盖区域相关联；该目标时频资源对应的目标随机接入前导时频资源信息为至少两个该随机接入前导时频资源信息中与该目标随机接入前导格式信息对应的随机接入前导时频资源信息。
在一种可能的实现方式中，该目标子覆盖区域与该终端设备所属位置的多普勒信息和该多普勒参考信息相关联。
在一种可能的实现方式中，该多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同 的多普勒变化率阈值对应不同的子覆盖区域。
在一种可能的实现方式中，若该多普勒参考信息包括：至少一个多普勒阈值，对应地，该多普勒信息包括：多普勒值；和/或，
若该多普勒参考信息包括：该至少一个多普勒变化率阈值，对应地，该多普勒信息包括：多普勒变化率值。
在一种可能的实现方式中，不同该子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与该子覆盖区域和该网络设备之间的距离成正向关系。
在一种可能的实现方式中，该目标随机接入前导格式信息包括以下至少一项：该随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
本申请实施例提供的网络设备130，可以用于执行本申请上述随机接入前导的传输方法实施例中关于网络设备的技术方案，其实现原理和技术效果类似，此处不再赘述。
图14为本申请一实施例提供的通信装置的硬件结构示意图。参见图14，该通信装置包括：处理器141和通信接口142，示例性的，处理器141和通信接口142可以通过通信总线通信，通信接口142用于接收待处理的数据和输出处理后的数据，处理器用于对待处理的数据执行如图5、图9、图10或图11对应的实施例所示的任一方法。其中，在通信装置应用于终端设备时，待处理的数据可以为本申请实施例中的上述多普勒参考信息和随机接入前导配置信息等，处理后的数据可以为上述目标随机接入前导格式信息对应的随机接入前导等。在通信装置应用于网络设备时，待处理的数据可以为终端设备在目标时频资源上发送的随机接入前导等，处理后的数据可以为上述随机接入前导配置信息和多普勒参考信息等。
可选的，通信接口142还可以包括发送器和/或接收器。
可选的，上述处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
可选的，该通信装置还包括存储器143，用于存储程序指令，程序指令由处理器执行时，使得上述图5、图9、图10或图11所示实施例所示的方法被执行。存储器和处理器可以是独立的单元，也可以是集成在一起的，本申请实施例对此不作具体限定。
图15为本申请另一实施例提供的通信装置的硬件结构示意图。参见图15，该通信装置包括：逻辑电路151、输入接口152和输出接口153，其中：输入接口用于获取待处理的数据；逻辑电路用于对待处理的数据执行如上述图5、图9、图10或图11所示实施例所示的方法，得到处理后的数据；以及输出接口用于输出处理后的数据。其中，在通信装置应用于终端设备时，待处理的数据可以为本申请实施例中的上述多普勒参考信息和随机接入前导配置信息等，处理后的数据可以为上述目标随机接入前导格式信息对应的随机接入前导等。在通信装置应用于网络设备时，待处理的数据可以为终端设备在目标时频资源上发送的随机接入前导等，处理后的数据可以为上述随机接入前导配置信息和多普勒参考信息等。
本申请实施例还提供一种芯片，该芯片包括上述任一个通信装置，或用于支持通信装置实现本申请实施例所示的功能，例如，网络设备向终端设备发送随机接入前导配置信息和多普勒参考信息，其中，上述随机接入前导配置信息中可以包括但不限于：至少两个随机接入前导格式信息，以及每个随机接入前导格式信息对应的随机接入前导时频资源信息；上述多普勒参考信息用于指示将该网络设备的预设覆盖区域划分为至少两个子覆盖区域。对应地，终端设备根据上述多普勒参考信息确定出该终端设备在该网络设备的预设覆盖区域中所属的目标子覆盖区域，并从上述至少两个随机接入前导格式信息中确定出与该目标子覆盖区域对应的目标随机接入前导格式信息。然后，该终端设备在与该目标随机接入前导格式信息对应的目标随机接入前导时频资源信息所指示的目标时频资源上，向该网络设备发送与该目标随机接入前导格式信息对应的随机接入前导等功能。该芯片具体可以用于芯片系统，该芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。当实现上述方法的为终端设备内的芯片时，芯片包括处理单元，进一步的，芯片还可以包括通信单元，所述处理单元例如可以是处理器，当芯片包括通信单元时，所述通信单元例如可以是输入/输出接口、管脚或电路等。处理单元执行本申请实施例中各个处理模块所执行的全部或部分动作，通信单元可执行相应的接收或发送动作，例如，接收网络设备发送的随机接入前导配置信息和多普勒参考信息等。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序，所述计算机程序用于实现上述图5、图9、图10或图11所示实施例所示的方法。
本申请实施例还一种通信系统，包括如图12所述的终端设备和如图13所述的网络设备。
本领域普通技术人员可以理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示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接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处 理单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。

Claims (37)

  1. 一种随机接入前导的传输方法，其特征在于，包括：
    根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与所述目标子覆盖区域对应的目标随机接入前导格式信息；其中，所述预设覆盖区域由一个或者多个波束组成，所述预设覆盖区域包括：至少两个子覆盖区域；
    在目标随机接入前导时频资源信息对应的目标时频资源上，向所述网络设备发送与所述目标随机接入前导格式信息对应的随机接入前导，其中，所述目标随机接入前导时频资源信息为与所述目标随机接入前导格式信息对应的随机接入前导时频资源信息。
  2. 根据权利要求1所述的方法，其特征在于，所述目标子覆盖区域与所述终端设备所属位置的多普勒信息和获取的多普勒参考信息相关联；其中，所述至少两个子覆盖区域为根据所述多普勒参考信息划分的。
  3. 根据权利要求2所述的方法，其特征在于，所述多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
  4. 根据权利要求3所述的方法，其特征在于，若所述多普勒参考信息包括：所述至少一个多普勒阈值，对应地，所述多普勒信息包括：多普勒值；和/或，
    若所述多普勒参考信息包括：所述至少一个多普勒变化率阈值，对应地，所述多普勒信息包括：多普勒变化率值。
  5. 根据权利要求2-4中任一项所述的方法，其特征在于，所述根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与所述目标子覆盖区域对应的目标随机接入前导格式信息之前，所述方法还包括：
    接收所述网络设备发送的所述多普勒参考信息。
  6. 根据权利要求2-5中任一项所述的方法，其特征在于，所述根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与所述目标子覆盖区域对应的目标随机接入前导格式信息之前，所述方法还包括：
    根据所述网络设备发送的下行信号确定所述多普勒信息。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与所述目标子覆盖区域对应的目标随机接入前导格式信息，包括：
    根据预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的至少两个随机接入前导格式信息中确定与所述目标子覆盖区域对应的目标随机接入前导格式信息；其中，所述预设子覆盖区域与随机接入前导格式信息之间的映射信息中包括：所述目标子覆盖区域与所述目标随机接入前导格式信息之间的映射信息。
  8. 根据权利要求7所述的方法，其特征在于，所述根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与所述目标子覆盖区域对应的目标随机接入前导格式信息之前，所述方法还包括：
    接收所述网络设备发送的随机接入前导配置信息；其中，所述随机接入前导配置信息中包括：所述至少两个随机接入前导格式信息，以及所述随机接入前导格式信息对应的随 机接入前导时频资源信息。
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，不同子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与所述子覆盖区域和所述网络设备之间的距离成正向关系。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，所述目标随机接入前导格式信息包括以下至少一项：所述随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
  11. 一种随机接入前导的传输方法，其特征在于，包括：
    发送随机接入前导配置信息和多普勒参考信息；其中，所述随机接入前导配置信息中包括：至少两个随机接入前导格式信息，以及所述随机接入前导格式信息对应的随机接入前导时频资源信息；所述多普勒参考信息用于指示将网络设备的预设覆盖区域划分为至少两个子覆盖区域；所述预设覆盖区域由一个或者多个波束组成；
    接收终端设备在目标时频资源上发送的随机接入前导；其中，所述随机接入前导对应的目标随机接入前导格式信息为所述至少两个随机接入前导格式信息中的一个随机接入前导格式信息，所述目标随机接入前导格式信息与所述终端设备在所述至少两个子覆盖区域中所属的目标子覆盖区域相关联；所述目标时频资源对应的目标随机接入前导时频资源信息为至少两个所述随机接入前导时频资源信息中与所述目标随机接入前导格式信息对应的随机接入前导时频资源信息。
  12. 根据权利要求11所述的方法，其特征在于，所述目标子覆盖区域与所述终端设备所属位置的多普勒信息和所述多普勒参考信息相关联。
  13. 根据权利要求12所述的方法，其特征在于，所述多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
  14. 根据权利要求13所述的方法，其特征在于，若所述多普勒参考信息包括：至少一个多普勒阈值，对应地，所述多普勒信息包括：多普勒值；和/或，
    若所述多普勒参考信息包括：所述至少一个多普勒变化率阈值，对应地，所述多普勒信息包括：多普勒变化率值。
  15. 根据权利要求11-14中任一项所述的方法，其特征在于，不同所述子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与所述子覆盖区域和所述网络设备之间的距离成正向关系。
  16. 根据权利要求11-15中任一项所述的方法，其特征在于，所述目标随机接入前导格式信息包括以下至少一项：所述随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
  17. 一种终端设备，其特征在于，包括：
    处理模块，用于根据终端设备在网络设备的预设覆盖区域中所属的目标子覆盖区域，确定与所述目标子覆盖区域对应的目标随机接入前导格式信息；其中，所述预设覆盖区域由一个或者多个波束组成，所述预设覆盖区域包括：至少两个子覆盖区域；
    发送模块，用于在目标随机接入前导时频资源信息对应的目标时频资源上，向所述网络设备发送与所述目标随机接入前导格式信息对应的随机接入前导，其中，所述目标随机 接入前导时频资源信息为与所述目标随机接入前导格式信息对应的随机接入前导时频资源信息。
  18. 根据权利要求17所述的终端设备，其特征在于，所述目标子覆盖区域与所述终端设备所属位置的多普勒信息和获取的多普勒参考信息相关联；其中，所述至少两个子覆盖区域为根据所述多普勒参考信息划分的。
  19. 根据权利要求18所述的终端设备，其特征在于，所述多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
  20. 根据权利要求19所述的终端设备，其特征在于，若所述多普勒参考信息包括：所述至少一个多普勒阈值，对应地，所述多普勒信息包括：多普勒值；和/或，
    若所述多普勒参考信息包括：所述至少一个多普勒变化率阈值，对应地，所述多普勒信息包括：多普勒变化率值。
  21. 根据权利要求18-20中任一项所述的终端设备，其特征在于，所述终端设备还包括：
    接收模块，用于接收所述网络设备发送的所述多普勒参考信息。
  22. 根据权利要求18-21中任一项所述的终端设备，其特征在于，所述处理模块还用于：
    根据所述网络设备发送的下行信号确定所述多普勒信息。
  23. 根据权利要求17-22中任一项所述的终端设备，其特征在于，所述处理模块具体用于：
    根据预设子覆盖区域与随机接入前导格式信息之间的映射信息，从获取的至少两个随机接入前导格式信息中确定与所述目标子覆盖区域对应的目标随机接入前导格式信息；其中，所述预设子覆盖区域与随机接入前导格式信息之间的映射信息中包括：所述目标子覆盖区域与所述目标随机接入前导格式信息之间的映射信息。
  24. 根据权利要求23所述的终端设备，其特征在于，所述终端设备还包括：
    接收模块，用于接收所述网络设备发送的随机接入前导配置信息；其中，所述随机接入前导配置信息中包括：所述至少两个随机接入前导格式信息，以及所述随机接入前导格式信息对应的随机接入前导时频资源信息。
  25. 根据权利要求17-24中任一项所述的终端设备，其特征在于，不同子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与所述子覆盖区域和所述网络设备之间的距离成正向关系。
  26. 根据权利要求17-25中任一项所述的终端设备，其特征在于，所述目标随机接入前导格式信息包括以下至少一项：所述随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
  27. 一种网络设备，其特征在于，包括：
    发送模块，用于发送随机接入前导配置信息和多普勒参考信息；其中，所述随机接入前导配置信息中包括：至少两个随机接入前导格式信息，以及所述随机接入前导格式信息对应的随机接入前导时频资源信息；所述多普勒参考信息用于指示将网络设备的预设覆盖区域划分为至少两个子覆盖区域；所述预设覆盖区域由一个或者多个波束组成；
    接收模块，用于接收终端设备在目标时频资源上发送的随机接入前导；其中，所述随机接入前导对应的目标随机接入前导格式信息为所述至少两个随机接入前导格式信息中 的一个随机接入前导格式信息，所述目标随机接入前导格式信息与所述终端设备在所述至少两个子覆盖区域中所属的目标子覆盖区域相关联；所述目标时频资源对应的目标随机接入前导时频资源信息为至少两个所述随机接入前导时频资源信息中与所述目标随机接入前导格式信息对应的随机接入前导时频资源信息。
  28. 根据权利要求27所述的网络设备，其特征在于，所述目标子覆盖区域与所述终端设备所属位置的多普勒信息和所述多普勒参考信息相关联。
  29. 根据权利要求28所述的网络设备，其特征在于，所述多普勒参考信息包括：至少一个多普勒阈值，其中，不同的多普勒阈值对应不同的子覆盖区域；和/或，至少一个多普勒变化率阈值，其中，不同的多普勒变化率阈值对应不同的子覆盖区域。
  30. 根据权利要求29所述的网络设备，其特征在于，若所述多普勒参考信息包括：至少一个多普勒阈值，对应地，所述多普勒信息包括：多普勒值；和/或，
    若所述多普勒参考信息包括：所述至少一个多普勒变化率阈值，对应地，所述多普勒信息包括：多普勒变化率值。
  31. 根据权利要求27-30中任一项所述的网络设备，其特征在于，不同所述子覆盖区域对应的随机接入前导格式信息不同，且任意子覆盖区域对应的随机接入前导格式信息所指示的随机接入前导的长度，与所述子覆盖区域和所述网络设备之间的距离成正向关系。
  32. 根据权利要求27-31中任一项所述的网络设备，其特征在于，所述目标随机接入前导格式信息包括以下至少一项：所述随机接入前导的循环前缀CP的长度、序列长度、序列的重复次数、子载波间隔。
  33. 一种通信装置，其特征在于，包括处理器和通信接口，所述通信接口用于接收待处理的数据和输出处理后的数据，所述处理器用于对所述待处理的数据执行如权利要求1-10任一项所述的方法，或者执行如权利要求11-16任一项所述的方法,得到所述处理后的数据。
  34. 根据权利要求33所述的通信装置，其特征在于，所述通信装置还包括存储器，用于存储程序指令，所述程序指令由所述处理器执行时，使得权利要求1-10中任一项所述的方法或者权利要求11-16中任一项所述的方法被执行。
  35. 一种通信装置，其特征在于，包括逻辑电路、输入接口和输出接口，其中：
    所述输入接口用于获取待处理的数据；
    所述逻辑电路用于对待处理的数据执行如权利要求1-10任一项所述的方法，或者执行如权利要求11-16任一项所述的方法，得到处理后的数据；以及
    所述输出接口用于输出处理后的数据。
  36. 根据权利要求33-35任一项所述的通信装置，其特征在于，所述装置为芯片。
  37. 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计算机程序，所述计算机程序用于实现如权利要求1-10任一项所述的方法，或者实现如权利要求11-16任一项所述的方法。
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