WO2023051407A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2023051407A1
WO2023051407A1 PCT/CN2022/120914 CN2022120914W WO2023051407A1 WO 2023051407 A1 WO2023051407 A1 WO 2023051407A1 CN 2022120914 W CN2022120914 W CN 2022120914W WO 2023051407 A1 WO2023051407 A1 WO 2023051407A1
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WO
WIPO (PCT)
Prior art keywords
mapping relationship
communication
elevation angle
beam elevation
communication device
Prior art date
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PCT/CN2022/120914
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English (en)
French (fr)
Inventor
赵斐然
陈莹
杜颖钢
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP22874793.7A priority Critical patent/EP4401478A1/en
Publication of WO2023051407A1 publication Critical patent/WO2023051407A1/zh
Priority to US18/620,673 priority patent/US20240243848A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/003—Arrangements to increase tolerance to errors in transmission or reception timing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiment of the present application relates to the communication field.
  • it relates to a communication method and device.
  • Non-terrestrial network (NTN) technology uses typical communication equipment such as satellites and high-altitude platforms (HPA) to participate in network deployment, which can achieve global network coverage.
  • NTN communication and terrestrial communication network can provide an integrated integrated communication network of sea, land, air and space that together form a seamless global coverage.
  • LEO low earth orbit
  • RTD round-trip propagation delay
  • IoT Internet of Things
  • the signal-to-noise ratio of IoT uplink transmission is low. Therefore, in order to improve the receiving signal-to-noise ratio of the system's uplink data and pilot sequence transmission, and the pilot sequence detection performance, IoT terminals need to use a certain number of repetitions for the transmission block when sending uplink.
  • long term evolution long term evolution, LTE
  • LTE long term evolution
  • the embodiment of the present application provides a communication method and device, which can avoid the problem that communication synchronization cannot be synchronized due to too large accumulated TA errors caused by communication equipment, and improve communication efficiency.
  • a communication method may include: the first communication device receives indication information, the indication information is used to indicate the first repeated segment duration, and the first repeated segment duration is based on the first mapping relationship Determined with the current beam elevation angle of the terminal device, the first mapping relationship includes the corresponding relationship between the beam elevation angle and the repeated segment duration; the first communication device determines the first repeated segment duration according to the indication information and the first mapping relationship.
  • the first communication device may be a terminal device.
  • the method determines the repeat segment duration of the information transmission according to the beam elevation angle of the terminal device, and can provide a reasonable repeat segment duration when the position of the network device changes, facilitating communication synchronization between the terminal device and the network device.
  • the indication information may be an index, which is used for the terminal device to search for the repeated segment duration corresponding to the index in the first mapping relationship; the indication information may also directly indicate the repeated segment duration, that is, it may be specific Duration value. This application is not limited to this.
  • the first communication device sends the first message according to the first repetition segment duration.
  • the first message is a message sent by the terminal device to the network device.
  • the first message may include uplink data or pilot.
  • the first message includes a narrowband physical uplink share channel (narrowband physical uplink share channel, NPUSCH), and may also include a narrowband physical random access channel (narrowband physical random access channel, NPRACH).
  • NPUSCH narrowband physical uplink share channel
  • NPRACH narrowband physical random access channel
  • the first mapping relationship is determined from multiple mapping relationships, each of the multiple mapping relationships corresponds to at least one communication parameter, and each The first mapping relationship includes the corresponding relationship between the beam elevation angle and the repeated segment duration, wherein the first mapping relationship is a mapping relationship corresponding to a first parameter, and the first parameter is a communication parameter currently used by the terminal device.
  • the duration of repeated segmentation is related to the beam elevation angle of the terminal device, and may also be related to the communication parameters of the information transmission of the terminal device.
  • the communication parameter includes a message format and/or a system parameter.
  • This scheme comprehensively considers the mapping relationship between communication parameters, beam elevation angles, and repeated segment durations, and can determine different repetitive segment durations for different communication parameters, further improving the rationality of the repeated segment duration for information transmission.
  • the communication parameter may be scheduled by the network device when configuring resources for the data transmission before the information transmission, or may be reported by the terminal device before the information transmission, which is not limited in this embodiment of the present application .
  • the absolute value of the difference between any two adjacent beam elevation angles in the beam elevation angle is the same, or, the repeated segment
  • the absolute value of the difference between the durations of any two adjacent repeated segments in the duration is the same.
  • adjacent may be adjacent beam elevation angles (or repeated segment durations) among beam elevation angles (or repeated segment durations) arranged in order of size.
  • the beam elevation angle or the repeated segment duration is equally divided, and the corresponding repeated segment duration is determined for equidistant beam elevation angle intervals or equidistant repeated segment duration intervals, which can further save indication signaling.
  • the scheme of determining the mapping relationship with the beam elevation angle by dividing the repeated segment time length equally can determine a more reasonable repeated segment time length according to the different beam elevation angles according to the change rate of the repeated segment time length, and further improve communication efficiency.
  • each of the repeated segment durations includes at least one repeat unit.
  • the absolute value of the difference between the numbers of any two adjacent repeating units in the at least one number of repeating units is the same.
  • the repetition segment duration may be composed of multiple repetition units, and the number of repetition units may be determined for different beam elevation angles by equally dividing the number of repetition units, which is applicable to the scenario of transmitting NPRACH.
  • the first communication device before the first communication device receives the indication information, the first communication device sends first information, where the first information includes location information, and the location information is used to determine the The current beam elevation angle of the terminal device.
  • the terminal device may report its own location information to the network device. It can be understood that the terminal device may periodically report location information to the network device.
  • the network device can also determine the position information of the terminal device according to the ephemeris, so as to determine its beam elevation angle. This embodiment of the present application does not limit it.
  • At least one of the repeated segment durations is less than or equal to a maximum continuous transmission time corresponding to the at least one repeated segment duration.
  • the maximum continuous transmission time may be determined according to a timing error (timing error, Te) and a timing advance change rate (TA rate ).
  • timing error timing error
  • TA rate timing advance change rate
  • a communication method may include: the second communication device determines a first repeated segment duration according to a first mapping relationship, where the first mapping relationship includes a corresponding relationship between a beam elevation angle and a repeated segment duration, The first repeated segment duration is the repeated segment duration corresponding to the first beam elevation angle, and the first beam elevation angle is the current beam elevation angle of the terminal device; the second communication device sends indication information, and the indication information is used to indicate the first repetition Segment duration.
  • the second communication device may be a network device.
  • the second communication device receives the first message according to the first repetition segment duration.
  • the first mapping relationship is determined from multiple mapping relationships, each of the multiple mapping relationships corresponds to at least one communication parameter, and each The first mapping relationship includes the corresponding relationship between the beam elevation angle and the repeated segment duration, wherein the first mapping relationship is a mapping relationship corresponding to a first parameter, and the first parameter is a communication parameter currently used by the terminal device.
  • the communication parameter includes a message format and/or a system parameter.
  • the absolute value of the difference between any two adjacent beam elevation angles in the beam elevation angle is the same, or, the repeated segment
  • the absolute value of the difference between the durations of any two adjacent repeated segments in the duration is the same.
  • each of the repeated segment durations includes at least one repeat unit.
  • the absolute value of the difference between the numbers of any two adjacent repeating units in the at least one number of repeating units is the same.
  • At least one of the repeated segment durations is less than or equal to a maximum continuous transmission time corresponding to the at least one repeated segment duration.
  • the maximum continuous transmission time may be determined according to a timing error (timing error, Te) and a timing advance change rate (TA rate ).
  • timing error timing error
  • TA rate timing advance change rate
  • the second aspect is a method on the network side corresponding to the first aspect, and the explanations, supplements, and descriptions of beneficial effects in the first aspect are applicable to the second aspect, and will not be repeated here.
  • a communication device which can be used in the first communication device of the first aspect, and the communication device can be a terminal device, or a device in a terminal device (for example, a chip, or a chip system, or circuit), or a device that can be used with terminal equipment.
  • the communication device may include a one-to-one corresponding module or unit for executing the method/operation/step/action described in the first aspect.
  • the module or unit may be a hardware circuit, software, or It can be implemented by combining hardware circuits with software.
  • the communication device may include a transceiver unit and a processing unit, where the transceiver unit is configured to receive indication information, where the indication information is used to indicate a first repeated segment duration, and the first repeated segment duration is determined according to the first repeated segment duration.
  • the transceiver unit is configured to receive indication information, where the indication information is used to indicate a first repeated segment duration, and the first repeated segment duration is determined according to the first repeated segment duration.
  • the first mapping relationship includes the corresponding relationship between the beam elevation angle and the repetition segment duration; the processing unit is used to determine the first repetition according to the indication information and the first mapping relationship Segment duration.
  • the transceiver unit is further configured to send the first message according to the first repetition segment duration.
  • the first mapping relationship is determined from multiple mapping relationships, each of the multiple mapping relationships corresponds to at least one communication parameter, and each The first mapping relationship includes the corresponding relationship between the beam elevation angle and the repeated segment duration, wherein the first mapping relationship is a mapping relationship corresponding to a first parameter, and the first parameter is a communication parameter currently used by the terminal device.
  • the communication parameter includes a message format and/or a system parameter.
  • the absolute value of the difference between any two adjacent beam elevation angles in the beam elevation angle is the same, or, the repeated segment
  • the absolute value of the difference between the durations of any two adjacent repeated segments in the duration is the same (equally divided).
  • each of the repeated segment durations includes at least one repeat unit.
  • the absolute value of the difference between the numbers of any two adjacent repeating units in the at least one number of repeating units is the same.
  • the transceiver unit before the transceiver unit receives the indication information, the transceiver unit is further configured to send first information, the first information includes location information, and the first location information is used to determine The current beam elevation angle of the terminal device.
  • At least one of the repeated segment durations is less than or equal to a maximum continuous transmission time corresponding to the at least one repeated segment duration.
  • the maximum continuous transmission time may be determined according to a timing error (timing error, Te) and a timing advance change rate (TA rate ).
  • timing error timing error
  • TA rate timing advance change rate
  • a communication device which can be used to execute the method of the second aspect
  • the communication device can be a network device, or a device in the network device (for example, a chip, or a chip system, or a circuit ), or a device that can be used with network equipment.
  • the communication device may include a one-to-one corresponding module or unit for executing the method/operation/step/action described in the second aspect.
  • the module or unit may be a hardware circuit, software, or It can be implemented by combining hardware circuits with software.
  • the communication device may include a transceiver unit and a processing unit, and the processing unit may be configured to determine a first repeated segment duration according to a first mapping relationship, where the first mapping relationship includes a beam elevation angle and a repeated segment duration Corresponding relationship, the first repeated segment duration is the repeated segment duration corresponding to the first beam elevation angle, the first beam elevation angle is the current beam elevation angle of the terminal device; the transceiver unit can be used to send indication information, the indication information is used Indicates the duration of the first repeated segment.
  • the transceiver unit is further configured to receive the first message according to the first repetition segment duration.
  • the first mapping relationship is determined from multiple mapping relationships, each of the multiple mapping relationships corresponds to at least one communication parameter, and each The first mapping relationship includes the corresponding relationship between the beam elevation angle and the repeated segment duration, wherein the first mapping relationship is a mapping relationship corresponding to a first parameter, and the first parameter is a communication parameter currently used by the terminal device.
  • the communication parameter includes a message format and/or a system parameter.
  • the absolute value of the difference between any two adjacent beam elevation angles in the beam elevation angle is the same, or, the repeated segment
  • the absolute value of the difference between the durations of any two adjacent repeated segments in the duration is the same.
  • each of the repeated segment durations includes at least one repeat unit.
  • the absolute value of the difference between the numbers of any two adjacent repeating units in the at least one number of repeating units is the same.
  • the transceiver unit before determining the first repetition segment duration according to the first mapping relationship, is further configured to acquire first information, where the first information includes location information, The location information is used to determine the current beam elevation angle of the terminal device.
  • At least one of the repeated segment durations is less than or equal to a maximum continuous transmission time corresponding to the at least one repeated segment duration.
  • the maximum continuous transmission time may be determined according to a timing error (timing error, Te) and a timing advance change rate (TA rate ).
  • timing error timing error
  • TA rate timing advance change rate
  • a computer-readable medium stores program code for execution by a communication device, and the program code includes a program code for executing the first aspect or the second aspect, or, the first aspect or the second aspect Any possible implementation of the aspect, or an instruction of the communication method in the method of all possible implementations of the first aspect or the second aspect.
  • a computer program product containing instructions, which, when running on a computer, causes the computer to execute the above first aspect or the second aspect, or any possible implementation of the first aspect or the second aspect , or, the methods of all possible implementations in the first aspect or the second aspect.
  • a communication system in a seventh aspect, includes a communication system that implements the first aspect or the second aspect, or any possible implementation of the first aspect or the second aspect, or, the first aspect or the second aspect All possible implementation methods and various functional devices of possible designs in the two aspects.
  • a communication device including a processor coupled to a memory, the processor is used to execute computer programs or instructions stored in the memory, so as to implement the above-mentioned first aspect or second aspect, or, the first aspect Or any possible implementation manner in the second aspect, or, the method in the first aspect or all possible implementation manners in the second aspect.
  • a ninth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is used to communicate with external devices or internal devices, and the processor is used to implement the first or second aspect above, or, the first A method in any possible implementation manner of the first aspect or the second aspect, or, a method in all possible implementation manners of the first aspect or the second aspect.
  • the chip may further include a memory, the memory stores instructions, and the processor is used to execute the instructions stored in the memory or other instructions.
  • the processor is used to implement the method in the first aspect or the second aspect or any possible implementation manners thereof.
  • the chip can be integrated on a terminal device or a network device.
  • Fig. 1 is a schematic diagram of a communication system applicable to the embodiment of the present application.
  • Fig. 2 is a schematic diagram of a satellite communication system applicable to the embodiment of the present application.
  • FIG. 3 is a schematic diagram of a communication method proposed by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a positional relationship between a terminal device and a satellite proposed by an embodiment of the present application.
  • FIG. 5 is a schematic flow chart of a communication method proposed by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another communication method proposed by the embodiment of the present application.
  • Fig. 7 is a schematic block diagram of a communication device proposed by an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of another communication device proposed by the embodiment of the present application.
  • NTN systems such as drones, satellite communication systems, and high altitude platform station (HAPS) communications.
  • the satellite communication system can be integrated into the existing ground mobile communication system, such as: LTE system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) , the fifth generation (5th generation, 5G) system or new radio (new radio, NR), device-to-device (D2D) communication system, machine communication system, vehicle networking communication system, satellite communication system or future communication system, etc.
  • LTE system LTE frequency division duplex (frequency division duplex, FDD) system
  • LTE time division duplex time division duplex
  • TDD time division duplex
  • 5G fifth generation
  • new radio new radio
  • D2D device-to-device
  • Fig. 1 shows a schematic diagram of an architecture of a communication system applicable to an embodiment of the present application.
  • the communication system may include at least one network device, such as the network device shown in FIG. 1 ; the communication system may also include at least one terminal device, such as the terminal device shown in FIG. 1 .
  • Network devices and terminal devices can communicate through wireless links.
  • the satellite mentioned in the embodiment of the present application may be a satellite base station, or a network-side device carried on a satellite.
  • satellite base stations, gateway stations or ground base stations are referred to as network equipment.
  • the network equipment in this application can be an evolved base station (evolutional Node B, eNB or eNodeB) in LTE; or a base station in a 5G network, a broadband network gateway (broadband network gateway, BNG), an aggregation switch or a non-third-generation
  • the partner project (3rd generation partnership project, 3GPP) access device and the like are not specifically limited in this embodiment of the present application.
  • the base stations in this embodiment of the present application may include various forms of base stations, for example: macro base stations, micro base stations (also called small stations), relay stations, access points, next-generation base stations (gNodeB, gNB), transmission Point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center and device-to-device (Device-to-Device, D2D), vehicle-to-everything (V2X), machine
  • M2M machine-to-machine
  • Internet of Things Internet of Things
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device
  • the network device is an evolved base station (evolutional nodeB, eNB or eNodeB) in the LTE system, and may also be a base station in the 5G system
  • One or a group (including multiple antenna panels) antenna panels, etc. can also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point , in-vehicle devices, wearable devices, D2D or machine-to-device communication terminals assuming base station functions, and network devices in 5G networks or network devices in future evolved networks, etc., are not limited in this embodiment of the application.
  • the terminal equipment mentioned in the embodiments of the present application may be an Internet of Things terminal, and specifically may refer to a user equipment (user equipment, UE), an access terminal, a subscriber unit (subscriber unit), a subscriber station, a mobile station (mobile station), A remote station, a remote terminal, a mobile device, a terminal equipment, a wireless communication device, a user agent, or a user device.
  • UE user equipment
  • UE user equipment
  • access terminal a subscriber unit (subscriber unit), a subscriber station, a mobile station (mobile station), A remote station, a remote terminal, a mobile device, a terminal equipment, a wireless communication device, a user agent, or a user device.
  • the terminal device may also be a satellite phone, a cellular phone, a smartphone, a wireless data card, a wireless modem, a machine type communication device, may be a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (wireless local loop) loop, WLL) station, personal digital assistant (PDA), virtual reality (virtual reality, VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, wireless terminal equipment in industrial control (industrial control) , wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, Wireless terminal devices in smart cities, wireless terminal devices in smart homes, etc., handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, high-altitude
  • This application does not limit the communication equipment, wearable equipment, 5G network or terminal equipment in the future communication network carried on the aircraft.
  • Terminal device A mobile device that supports satellite communication, can access the satellite network through the air interface and initiate calls, surf the Internet and other services.
  • the terminal device can be any of the aforementioned possible terminals.
  • Network equipment mainly to provide wireless access services, schedule wireless resources to access terminals, provide reliable wireless transmission protocols and data encryption protocols, etc.
  • the network equipment can be the aforementioned various possible network equipment.
  • Core network user access control, mobility management, session management, user security authentication, billing and other services. It consists of multiple functional units, which can be divided into functional entities of the control plane and the data plane.
  • the access and mobility management function (AMF) is responsible for user access management, security authentication, and mobility management.
  • the user plane function (UPF) is responsible for managing user plane data transmission, traffic statistics, security eavesdropping and other functions.
  • the session management function (SMF) is mainly responsible for interacting with the data plane, creating, updating and deleting sessions.
  • Ground station responsible for forwarding signaling and business data between the satellite base station and the core network.
  • satellites and ground stations are network devices, and are used to provide communication services for terminals.
  • the ground station may also be referred to as a gateway station (gateway), a signal gateway station, and the like.
  • the link between the satellite and the terminal is called the service link, and the link between the satellite and the gateway station is called the feeder link.
  • the ground station has the function of a base station or part of the functions of a base station.
  • the ground station can be regarded as a ground base station; or, the ground base station can be deployed separately from the ground station.
  • the satellite When the satellite is working in a regenerative mode, the satellite has data processing capabilities, functions as a base station or part of the functions of a base station, and the satellite can be regarded as a base station.
  • TA rate of change used in the process of calculating the repeated segmentation duration in each embodiment of the present application comprehensively considers the rate of change of the round-trip TA of the service link and the feeder link.
  • the method provided in the embodiment of the present application is applicable to the transparent transmission mode and the regeneration mode of the satellite, which is not limited in the embodiment of the present application.
  • NTN uses typical communication equipment such as satellites and HPA to participate in network deployment technology to achieve true global network coverage. Its advantages and strategic importance for development are self-evident.
  • the NTN system can be divided into four categories based on the altitude of the satellite orbit: the low-orbit LEO satellite system with an orbital altitude of 500-2000km, and the medium-earth orbit (MEO) satellite system with an orbital altitude of 2000-20000km , High earth orbit (HEO) satellite system, the orbit is an elliptical orbit with a height greater than 20,000km, and a geostationary earth orbit (GEO) satellite system, with an orbit height of 35,800km.
  • MEO medium-earth orbit
  • HEO High earth orbit
  • GEO geostationary earth orbit
  • the LEO satellite system has a relatively low round-trip propagation delay RTD, and has relatively little path loss, and can be applied to the Internet of Things (IoT) system.
  • IoT Internet of Things
  • the signal-to-noise ratio of IoT uplink transmission is low. Therefore, in order to improve the receiving signal-to-noise ratio of system uplink data and pilot sequence transmission, and pilot sequence detection performance, the physical uplink shared channel (physical uplink share channel, PUSCH) and the narrowband physical random access channel NPRACH need to be repeatedly transmitted.
  • the TA and TA change rate in the IoT communication scenario are much smaller than those in the NTN scenario. Therefore, the validity period for calculating the pre-compensation amount such as TA and Doppler frequency shift before an uplink transmission starts is shorter than that in the NTN system.
  • the continuous transmission time of IoT uplink repeated transmission is relatively long.
  • the 3GPP standard TS36.211 stipulates that the continuous transmission time of NPRACH can be 64 or 16 repetition units (repetition unit), and the LTE standard also stipulates that the continuous transmission duration of NPUSCH can be 250ms in the above continuous transmission duration After the end, a period of time interval can be inserted for the uplink synchronization of the terminal equipment.
  • Step 301 The second communication device determines a first repetition segment duration according to a first mapping relationship.
  • the present application relates to a first communication device and a second communication device.
  • the first communication device may be the aforementioned terminal device
  • the second communication device may be the aforementioned network device.
  • the first mapping relationship includes the corresponding relationship between the beam elevation angle and the repeated segment duration, the first repeated segment duration may be the repeated segment duration corresponding to the first beam elevation angle, and the first beam elevation angle may be the current beam of the first communication device elevation angle.
  • the first mapping relationship may be determined from multiple mapping relationships, each mapping relationship in the multiple mapping relationships corresponds to at least one communication parameter, and each mapping relationship may be the correspondence between the beam elevation angle and the repeated segment duration relation. That is to say, the factor for determining the duration of repeated segmentation may be the beam elevation angle, or may be the beam elevation angle and communication parameters.
  • the communication parameters may be message formats and/or system parameters.
  • the message format may be the format of the pilot sequence.
  • the three formats of the IoT pilot sequence specified in TS36.211 for example, pilot format 0 (preamble format 0), pilot format 1 (preamble format 1) and pilot format 2 (preamble format 2).
  • the NPRACH pilot sequence is mainly composed of a cyclic prefix (cyclic prefix, CP) part and a sequence part, so the minimum unit of NPRACH pilot transmission repetition is P symbol groups, where each symbol group is based on a different guide
  • the frequency format contains different CP part lengths and sequence part lengths.
  • Table 1 The corresponding structure of the NPRACH pilot sequence in different formats in 3GPP standard TR36.211 is shown in Table 1:
  • T cp is the length of the CP part
  • T SEQ is the length of the sequence part
  • the duration of the repeat unit the number of symbol groups included in the repeat unit*(T cp +T SEQ ).
  • the duration of the repeating unit is 5.6 ms
  • the duration of the repetition unit of a symbol group is 6.4ms
  • the duration of the repetition unit is 19.2ms.
  • the system parameters may include: subcarrier spacing (subcarrier spacing, SCS), PUSCH format, subcarrier number (Tone), resource unit (resource unit, RU) contains the number of time slots (slot) and other parameters.
  • SCS subcarrier spacing
  • Tone subcarrier number
  • resource unit resource unit
  • RU resource unit contains the number of time slots (slot) and other parameters.
  • the system parameters in TS36.211 can have seven different situations (case 1-case 7), as shown in Table 2.
  • the repetition unit length T rep_unit corresponding to each system parameter can be based on the preceding information in each RU of NPUSCH
  • the number of consecutive repetitions of a time slot in the time domain (number of repetitions of identical slots for NPUSCH), number of slots
  • the time slot length T slot is determined. for example,
  • the number of repetitions transmitted on NPUSCH hour The value of is not fixed.
  • Table 3 is a calculation result based on an example where a PUSCH transmission block includes one resource unit (resource unit). It can be understood that a PUSCH transmission block may also include multiple resource units.
  • the number of repetitions transmitted in NPUSCH greater than or equal to 8 The value is 4, the repeat unit length Trep_unit can be based on Sure.
  • the foregoing first mapping relationship may be a mapping relationship corresponding to a first parameter, and the first parameter may be a communication parameter currently used by the first communication device.
  • the communication parameter may be scheduled by the second communication device when configuring resources for the information transmission, for example, the second communication device may indicate to the first communication device through downlink control information (DCI)
  • DCI downlink control information
  • the first communication device may send indication information to the second communication device before information transmission, and the indication information is used to indicate the communication parameters used in this information transmission, that is to say, the first communication device may inform the second communication device The communication parameter of the communication device.
  • This embodiment of the present application does not limit it.
  • the absolute value of the difference between any two adjacent beam elevation angles in the beam elevation angle is the same, or, any two adjacent repeated segments in the repeated segment duration
  • the absolute value of the difference in duration is the same. That is to say, by equally dividing the beam elevation angle, the corresponding repetition segment duration can be determined for the different beam elevation angles of the first communication device; or by equally dividing the repetition segment duration, within the allowable continuous transmission duration, for different The transmission duration determines the corresponding beam elevation angle.
  • each of the repeated segment durations includes at least one repeat unit, and the number of any two adjacent repeat units in at least one repeat unit number The absolute values of the differences are the same.
  • the number of repetition units included in the corresponding repetition segment duration can be determined for different beam elevation angles of the first communication device by dividing the number of repetition units equally, and this solution can be applied to NPRACH transmission.
  • the above meaning of being adjacent may be the elevation angles of two adjacent beams arranged in order of size or the duration of two repeated segments.
  • the beam elevation angles are arranged in order of magnitude, which may be 10°, 20°, 30°, 40°, ..., where 10° and 20 or 20° and 30° may be regarded as adjacent beam elevation angles.
  • the second communication device may acquire first information, where the first information may include location information, and the location information may be used to determine the current location of the first communication device. Beam elevation angle.
  • the acquisition of the first information by the second communication device may be that the second communication device acquires location information periodically reported by the terminal, such as global navigation satellite system (global navigation satellite system, GNSS) location information; or, the second communication device may obtain The location information reported by the terminal at the last moment is currently stored on the network side, such as GNSS location information.
  • GNSS global navigation satellite system
  • Step 302 the second communication device sends indication information to the first communication device, and correspondingly, the first communication device receives the indication information.
  • the indication information may be used to indicate the duration of the first repeated segment.
  • the indication information may be an index determined according to the first mapping relationship, such as a bit field, and after receiving the index, the first communication device searches for the corresponding repetition segment duration according to the first mapping relationship.
  • the first communication device may store the first mapping relationship in advance.
  • the first communication device may also store the above-mentioned multiple mapping relationships including the first mapping relationship in advance.
  • the second communication device should also at least store the first mapping relationship.
  • the first mapping relationship and/or the foregoing multiple mapping relationships including the first mapping relationship may also be sent by the second communication device to the first communication device. This embodiment of the present application does not limit it.
  • the indication information may also be a specific value of the duration of the first repeated segment, and in this case, the first communication device does not need to store the mapping relationship.
  • the second communication device may send indication information to the first communication device before each information transmission, which is used to indicate the repeated segment duration of each information transmission; the second communication device may also, after the last repeated segment duration ends, Determine the beam elevation angle of the first communication device according to the real-time position of the first communication device, and determine whether the repetition segment duration needs to be updated, if the position of the first communication device does not change, or the position change of the first communication device is not enough to cause repetition If the segment duration changes, the second communication device does not need to send indication information before the start of the next repeated segment duration (that is, before the next information transmission); if the position of the first communication device changes, it is enough to cause repeated segment If the duration changes, the second communication device determines the real-time beam elevation angle according to the changed position information of the first communication device, and then determines the new repetition segment duration according to the beam elevation angle, and sends indication information to the first communication device for indicating For the new repeated segment duration, the first communication device may send information according to the new repeated segment duration in the next information transmission.
  • the above repeated segment duration is less than or equal to the maximum continuous transmission time corresponding to the repeated segment duration.
  • the maximum continuous transmission time may be determined according to timing errors Te and TA.
  • the maximum allowed time-continuous transmission duration (the maximum allowed time-continuous transmission duration) T seg_max , the timing error Te and the TA rate of change TA rate may satisfy the following relationship:
  • the TA rate may be determined according to the orbital height H of the second communication device (such as a satellite) and the elevation angle ⁇ of the beam that the terminal points to the second communication device.
  • the embodiment of this application is based on If it is greater than 8 as an example, calculate the duration of repeated segments. It is understandable that, It can also be less than or equal to 8. The calculation method of the repeated segment duration is similar and will not be repeated here.
  • the indication information may also be used to indicate the number of repeating units (time-continuous repetition number), which is not limited in this embodiment of the present application.
  • the repetition unit may be a unit (NPUSCH repetition unit) including a certain number of time slots in the above-mentioned NPUSCH, or a unit (NPRACH repetition unit) including a certain number of symbol groups in the above-mentioned NPRACH.
  • the indication information may be sent in a system information block (system information block, SIB) message.
  • SIB system information block
  • the method may also include:
  • Step 303 the first communication device sends the first message to the second communication device according to the first repetition segment duration, and correspondingly, the second communication device receives the first message according to the first repetition segment duration.
  • the duration of the first repeated segment is assumed to be 24ms, and the first communication device repeatedly sends the first message to the second communication device, and the duration of each transmission is 24ms. After the end of 24ms, the first communication device can Adjust the TA compensation amount, etc.
  • the above method determines the repeated segment duration of the information transmission according to the beam elevation angle of the first communication device, and provides the first communication device with a reasonable repeated segment duration when the position of the second communication device changes at a high speed, thereby avoiding the first
  • the accumulated error between the communication device and the second communication device TA is too large, which facilitates communication synchronization between the first communication device and the second communication device, and improves communication efficiency.
  • the above method determines the repeated segment duration of the information transmission according to the beam elevation angle of the first communication device, wherein the beam elevation angle of the first communication device can also be replaced by other angles, for example, as shown in FIG. 4 ,
  • the angle may be the beam angle of the second communication device (such as a satellite), for example, angle 2 in FIG. 4 , and the beam angle may be converted to the beam elevation angle of the first communication device through a trigonometric relationship. Similar angles should fall within the protection scope of the present application.
  • FIG. 3 takes the example of the second communication device instructing the first communication device to repeat the segment duration. It can be understood that the first communication device may also determine the repetition segment duration according to the mapping relationship. Correspondingly, the first communication device communicates with the second The device sends indication information, which is used to indicate the repeated segment duration of this information transmission. In this case, the first communication device needs to store the mapping relationship in advance. For the method of the first communication device in this method, reference may be made to the method of the second communication device in FIG. 3 , and details are not repeated here.
  • the first communication device receives the ephemeris information delivered by the second communication device, and calculates its own beam elevation angle through the satellite positions and velocities in the ephemeris.
  • the repeated segment duration is determined according to the beam elevation angle and the above mapping relationship, and the repeated segment duration may be carried in the uplink data and notified to the second communication device.
  • This solution can be applied to the transmission of uplink data (such as NPUSCH).
  • the second communication device may indicate the second mapping relationship to the first communication device, the second mapping relationship may be determined by the second communication device according to the beam elevation angle of the first communication device, and the second mapping relationship The correspondence between the message format and the duration of the repeated segment may be included.
  • the first communication device in a cell may adopt different system parameters, and the second communication device may put a set of signaling in the broadcast message and send it to all the first communication devices when sending the SIB broadcast.
  • a communication device For the first communication devices in one beam, a common beam elevation angle is used.
  • the second communication device can determine the corresponding relationship between the system parameters and the repetition segment duration according to the current beam angle. For example, if the current beam elevation angle is 63.8 degrees, the second communication device will respectively correspond to the seven system parameters corresponding to 63.8 degrees.
  • the segment duration is carried in the SIB message and sent in the form of broadcast. After the first communication device decodes the SIB, it obtains a set of repetition segment durations, and can choose to apply one of the seven values included in the SIB message according to the system parameters it currently uses.
  • the numbers of the first communication device and the second communication device are not limited in each embodiment of the present application.
  • the indication information may be sent in batches, or may be sent once in a broadcast or multicast manner, which is not limited in this embodiment of the present application.
  • the second communication device determines the repeated segment duration corresponding to each beam elevation angle according to the method of equally dividing the beam elevation angles of the first communication device. , and assume that the satellite orbit altitude is 600KM, that is, LEO-600, for description.
  • the first communication device is a terminal device
  • the second communication device is a network device.
  • Step 501 The network device acquires system parameters.
  • the system parameter may be an example of the communication parameter in step 301 in FIG. 3 , and reference may be made to the description in step 301 in FIG. 3 .
  • Step 502 the network device obtains the location information of the terminal device.
  • step 301 in FIG. 3 For the location information and the acquisition of the location information, reference may be made to the description in step 301 in FIG. 3 .
  • Step 503 The network device determines the beam elevation angle of the terminal device according to the location information.
  • Step 504 The network device determines the duration of repeated segmentation according to the beam elevation angle and the first mapping relationship.
  • step 301 For this step, reference may be made to the description of step 301 in FIG. 3 .
  • step 503 and step 504 may be performed separately or simultaneously. This embodiment of the present application does not limit it.
  • Step 505 The network device sends indication information to the terminal device, and the terminal device receives the indication information accordingly.
  • the indication information is used to indicate the duration of the repeated segment. For this step, reference may be made to the description of step 302 in FIG. 3 .
  • Step 506 The terminal device sends uplink data according to the repeated segment duration.
  • the uplink data is NPUSCH.
  • the NPRACH is an example of the first message in step 303 in FIG. 3 .
  • Table 4A is only used as an example rather than a limitation, and all or part of the content of Table 4A may be used as an implementation, which is not limited in this embodiment of the present application.
  • Table 4A shows the calculation results of the maximum segmented transmission duration, repeated segmented duration, and the number of repeated units corresponding to the beam elevation angle.
  • the corresponding maximum segmented transmission duration is 36.89ms
  • the repeated segmented The segment duration is 32ms
  • the number of repeating units is 1.
  • the maximum segment duration, repeat segment duration, and number of repeat units, etc. corresponding to the minimum angle of the interval can be used.
  • the beam elevation angle is 46°, it is in the range of 40°-50°, and the corresponding maximum segment transmission duration can be 36.89ms corresponding to 40°. Other angles are similar and will not be repeated here.
  • the maximum segment transmission duration corresponding to this angle is greater than the maximum sustainable transmission duration specified in the standard, since the maximum segment transmission duration corresponding to 90°, repeated segment Duration, number of repeating units lights, in the interval of 80°-90°, when the beam elevation angle is less than 83.67°, the maximum segment transmission time corresponding to 80°, repeating segment duration, number of repeating units, etc. can be used.
  • N is the maximum number of NPUSCH repeat units that can be included in each repeated segment
  • X is the repeated segment duration determined according to the calculated maximum continuous transmission time T seg_max
  • cases 1 to 7 represent seven types different system parameters.
  • the first mapping relationship in step 504 may be the corresponding relationship between a certain situation and X and N in Table 4A.
  • the first mapping relationship may be Table 5:
  • the beam elevation angles are equally divided by a difference of 10° into nine equal parts.
  • the average difference is only an example.
  • the average difference can also be 5°, 15°, and so on. This embodiment of the present application does not limit it.
  • the first mapping relationship in step 504 may be the corresponding relationship between a certain situation and X in Table 4A, or the corresponding relationship between a certain situation and N. This embodiment of the present application does not limit it.
  • N in Table 4A can be determined by T seg_max and repeat unit duration T rep_unit .
  • T seg_max and repeat unit duration T rep_unit .
  • the above three parameters may satisfy the following relationship:
  • the indication information in step 503 may be one of 4-bit signaling.
  • the network device can determine that the repeated segment duration corresponding to this transmission is 16 ms, and send indication information to the terminal device, and the indication information can be If it is 0001, the terminal device receives the indication information, determines that the corresponding repeated segment duration is 16ms, and sends information to the network device according to the 16ms repeated segment duration.
  • Table 4B is only an example and not a limitation, and all or part of the content of Table 4B may be used as an implementation. Table 4B may also be presented in combination with Table 4A, which is not limited in this embodiment of the present application.
  • Table 4B is when The mapping relationship between the repeated segment duration calculated when it is less than 8 and related parameters, the M rep in Table 4B and the above same.
  • the beam elevation angle in Table 4B is greater than 83.67°, the corresponding relationship with the repeated segment duration is similar to that in Table 4A, and will not be repeated here.
  • the network side will use only 4-bit signaling for different system parameters of the NPUSCH at different elevation angles. Instructing the terminal device to provide a reasonable repeat segment time for the terminal device can avoid excessive accumulated errors between the terminal device and the network device TA, facilitate the communication synchronization between the terminal device and the network device, and improve communication efficiency.
  • the division value of the elevation angle is evenly divided between 10 and 90 degrees, which can cover most of the beam elevation angles of the LEO satellite system.
  • This application proposes yet another embodiment, taking the method of determining the maximum sustainable transmission duration (256 ms) specified by the equal sharing standard as an example to determine the duration of the repeated segment corresponding to each beam elevation angle, in this embodiment, when When greater than or equal to 8, the mapping relationship described in Figure 3 can be as shown in Table 6:
  • Table 6 is only used as an example rather than limitation, and all or part of the content in Table 6 may be used as an implementation, which is not limited in this embodiment of the present application.
  • the indication information is represented by 3 bits, therefore, 8 different segment duration values need to be configured for each system parameter situation.
  • the mapping relationship proposed in this embodiment has the same applicable angle range for seven different system parameters.
  • the network device can indicate 3-bit signaling to the terminal device through the SIB message, indicating that the NPUSCH repetition segment duration that the terminal device can use in this information transmission is 32ms.
  • Table 6 can be extended to Table 7 in order to cover all angle ranges:
  • Table 7 is only used as an example rather than a limitation, and all or part of the content in Table 7 may be used as an implementation, which is not limited in this embodiment of the present application.
  • This embodiment differs from the scheme shown in FIG. 5 only in the mapping relationship and the numerical results in Table 4A and Table 7. Other steps are similar to those in FIG. 5 and will not be repeated here.
  • the same set of mapping relationships can be used for the seven system parameters, which can save signaling overhead.
  • Table 7 it is only necessary to configure an additional set of segmentation values under angles during configuration. Compared with Table 2, signaling overhead is further saved.
  • it may be an optional step for the network device to acquire the communication parameters of this information transmission by the terminal device.
  • the present application provides another embodiment, which is different from the satellite orbit in the embodiment shown in FIG. 5 , specifically 1200 km.
  • the multiple mapping relationships described in Figure 3 can be as shown in Table 8A:
  • Table 8A is only used as an example rather than a limitation, and all or part of the content of Table 8A may be used as an implementation, which is not limited in this embodiment of the present application.
  • Table 8A shows the calculation results of the maximum segmented transmission duration, repeated segmented duration, and the number of repeated units corresponding to the beam elevation angle.
  • the corresponding maximum segmented transmission duration is 41.76 ms
  • the repeated segmented The segment duration is 32ms
  • the number of repeating units is 1.
  • the maximum segment duration, repeat segment duration, and number of repeat units, etc. corresponding to the minimum angle of the interval can be used.
  • the beam elevation angle is 46°, it is in the range of 40°-50°, and the corresponding maximum segment transmission duration can be 41.76ms corresponding to 40°. Other angles are similar and will not be repeated here.
  • the maximum segment transmission duration corresponding to this angle is greater than the maximum sustainable transmission duration specified in the standard, since the maximum segment transmission duration corresponding to 90°, repeated segment Duration, repeating unit number lights, in the interval of 80°-90°, when the beam elevation angle is less than 83.67°, the maximum segment transmission time corresponding to 80°, repeating segment duration, number of repeating units, etc. can be used.
  • Table 8B is only used as an example rather than limitation, and all or part of the content of Table 8B may be used as an implementation.
  • Table 8B may also be presented in combination with Table 8A, which is not limited in this embodiment of the present application.
  • Table 8B is when The mapping relationship between the repeated segment duration calculated when it is less than 8 and related parameters, the M rep in Table 8B and the previous same.
  • the beam elevation angle in Table 8B is greater than 83.67°, the corresponding relationship with the repeated segment duration is similar to that in Table 8A, and will not be repeated here.
  • This application proposes yet another embodiment, taking the method of equally dividing the maximum sustainable transmission duration as an example to determine the repeated segment duration corresponding to each beam elevation angle, in this embodiment, when when less than 8 and When greater than or equal to 8, the multiple mapping relationships described in Figure 3 are the same, as shown in Table 9:
  • Table 9 is only used as an example rather than a limitation, and all or part of the content in Table 9 may be used as an implementation, which is not limited in this embodiment of the present application.
  • This embodiment is different from the embodiment including Table 6 only in the height of the satellite orbit and the numerical results in Table 6. Other steps are similar to the embodiment including Table 6, and will not be repeated here. Correspondingly, in this embodiment, it may be an optional step for the network device to acquire the communication parameters of this information transmission by the terminal device.
  • the present application proposes yet another embodiment.
  • the second communication device determines the number of repeating units corresponding to each beam elevation angle by dividing the beam elevation angles of the first communication device equally.
  • the satellite orbit altitude is 600KM, that is, LEO-600, for description.
  • the first communication device is a terminal device
  • the second communication device is a network device. This embodiment is shown in Figure 6, may comprise the following steps:
  • Step 601 The network device obtains the message format.
  • the message format is an example of the communication parameters in step 301 in FIG. 3 , and reference may be made to the description in step 301 in FIG. 3 .
  • Step 602 The network device acquires location information.
  • step 301 in FIG. 3 For the location information and the acquisition of the location information, reference may be made to the description in step 301 in FIG. 3 .
  • Step 603 The network device determines the beam elevation angle of the terminal device according to the location information.
  • Step 604 The network device determines the number of repeating units according to the beam elevation angle and the first mapping relationship.
  • step 301 For this step, reference may be made to the description of step 301 in FIG. 3 .
  • step 603 and step 604 may be performed separately or simultaneously. This embodiment of the present application does not limit it.
  • Step 605 the network device sends indication information to the terminal device.
  • the indication information is used to indicate the number of repeating units. For this step, reference may be made to the description in step 302 in FIG. 3 .
  • Step 606 The terminal device sends pilots according to the number of repeating units.
  • the pilot may be carried in NPRACH.
  • the NPRACH is an example of the first message in step 303 in Fig. 3 .
  • Table 10 is only used as an example rather than limitation, and all or part of the content in Table 10 may be used as an implementation, which is not limited in this embodiment of the present application.
  • N is the maximum number of NRACH repeat units that can be included in each repeat segment, and pilot formats 0-2 represent three different message formats.
  • the first mapping relationship in step 604 may be the corresponding relationship between a certain pilot pattern and beam elevation angle, N in Table 7.
  • the first mapping relationship may be Table 11:
  • the beam elevation angles are equally divided by a difference of 10° into nine equal parts.
  • the average difference is only an example.
  • the average difference can also be 5°, 15°, and so on. This embodiment of the present application does not limit it.
  • N in Table 10 may be determined by the maximum transmission duration T seg_max and the repetition unit duration T rep_unit_rach .
  • T seg_max the maximum transmission duration
  • T rep_unit_rach the repetition unit duration
  • the pilot sequence specified in TS36.211 has three formats, namely pilot format 0, pilot format 1 and pilot format 2, and the corresponding NPRACH repetition unit durations Trep_unit_rach are: 5.6ms, 6.4 ms, 19.2ms.
  • the indication information in step 603 may be represented by 4 bits.
  • the network device can determine that the maximum number of repetition units that can be included in the repetition segment duration corresponding to this transmission is 5, Send instruction information to the terminal device, the instruction information can be 0100, the terminal device receives the instruction information, determines that the maximum number of repeat units that can be included in the corresponding repetition segment duration is 5, and sends the guide to the network device according to the 5 repeat units frequency sequence.
  • This embodiment is aimed at the different pilot formats sent by the uplink pilot, and according to different elevation angles, it designs the maximum number of NPRACH repetition units that can be included in the repeated segment of the NPRACH pilot transmission under the current elevation angle, and for For all pilot sequence formats, the design results reflect 14 different segment values, which can enable the network side to indicate a suitable pilot for all different elevation angle situations with only 4 bits of signaling in the SIB message Segment duration (or number). It can provide reasonable synchronization time for terminal equipment and network equipment to avoid communication out of sync.
  • the present application proposes yet another embodiment, which is described by taking the method of determining the number of repeating units corresponding to each beam elevation angle according to the maximum number of repeating units included in the maximum sustainable transmission duration stipulated in the equal sharing standard as an example.
  • the maximum numbers of NPRACH repetition units that can be continuously transmitted corresponding to the three pilot formats are 64, 64 and 16 respectively.
  • a 3-bit indication field is uniformly used in this embodiment to indicate the number of repetition units contained in the NPRACH segment duration, that is, for each pilot format, 8 divisions need to be configured respectively
  • the value of segment duration is N:
  • N ⁇ 2, 4, 6, 8, 10, 12, 14, 16 ⁇ .
  • the number of the first repeating unit corresponding to pilot pattern 0 is 8, and the corresponding elevation angle is 50.90°.
  • the number of repeating units has three values: 7, 6, and 5. Therefore, in order to meet the requirement that the number of repeating units is applicable to all elevation angles within 10° to 90°, that is, the value of the number of repeating units should include different situations in the range of 10° to 50.90°.
  • Table 12 is only used as an example rather than a limitation, and all or part of the content in Table 12 may be used as an implementation, which is not limited in this embodiment of the present application.
  • the change of each pilot format in different elevation angle ranges is considered, especially when the elevation angle is large, the segmentation method is more reasonable.
  • the elevation angle is greater than 50 degrees
  • the rate of change in the number of repeating units contained in the repeat segment duration is relatively large, and the number of repeating units is indicated by dividing the elevation angle evenly, which cannot cover the elevation angle with a large change in the number of repeating units.
  • This application proposes yet another embodiment, which is different from the satellite orbit in the embodiment shown in FIG. 6 , specifically 1200 km.
  • the multiple mapping relationships described in Figure 3 can be as shown in Table 13:
  • Table 13 is only used as an example rather than a limitation, and all or part of the content in Table 13 may be used as an implementation, which is not limited in this embodiment of the present application.
  • N ⁇ 1,2,3,4,5,6,7,8,9,11,14,16,28,32,64 ⁇ .
  • This embodiment differs from the solution shown in FIG. 6 only in the satellite orbit height and the numerical results calculated in Table 8A. Other steps are similar to those in FIG. 6 and will not be repeated here.
  • This application proposes yet another embodiment, taking the method of determining the number of repeating units corresponding to each beam elevation angle as an example based on the maximum number of repeating units included in the maximum sustainable transmission duration stipulated in the equal sharing standard.
  • the satellite The orbital height is 1200km, and the mapping relationship described in Figure 3 can be shown in Table 14:
  • Table 14 is only used as an example rather than a limitation, and all or part of the content in Table 12 may be used as an implementation, which is not limited in this embodiment of the present application.
  • NPRACH repetition unit numbers 8 types can be configured for each pilot format, and the number of repetition units is indicated through a 3-bit indication field.
  • N of the number of NPRACH repetition units for each pilot format is:
  • N ⁇ 5 (or 4), 16, 24, 32, 40, 48, 56, 64 ⁇ ;
  • N ⁇ 5 (or 4), 16, 24, 32, 40, 48, 56, 64 ⁇ ;
  • N ⁇ 1 (or 0), 4, 6, 8, 10, 12, 14, 16 ⁇ .
  • This embodiment is different from the embodiment including Table 12 only in the height of the satellite orbit, and the numerical results calculated in Table 12 are different, and other steps are similar to the embodiment including Table 12, and will not be repeated here.
  • This solution takes into account the change of each pilot format in different elevation angle ranges, especially when the elevation angle is large, which can further improve the rationality of the segmentation method.
  • the tables in the embodiments of the present application include non-integer values, and may also take the largest integer smaller than the values.
  • Table 9 takes the largest integer smaller than the non-integer values in Table 9, and Table 9 can be transformed into Table 15:
  • the value of X corresponds to the corresponding angle interval on the left.
  • the interval of 0°-10° corresponds to a repeated segment duration of 32ms
  • 10°-60° corresponds to a repeated segment duration of 64ms.
  • the second mapping relationship indicated by the second communication device to the first communication device may be X and/or N corresponding to a certain beam elevation angle in the above-mentioned Table 4A and Table 8A, and the above-mentioned Table 7
  • a certain beam elevation angle or beam elevation angle range corresponds to X in case 1-7
  • a certain beam elevation angle in Table 10 above corresponds to N in pilot formats 0-2.
  • the second communication device may indicate to the first communication device the second mapping relationship shown in Table 16, the mapping relationship is the corresponding relationship between the system parameters and the repetition segment duration when the beam elevation angles of multiple first communication devices are all 20° .
  • the first communication device may determine the corresponding repetition segment duration according to the system parameters adopted by itself. For example, when the first communication device receives the second mapping relationship shown in Table 16, and the system parameter adopted by itself is Case 3, it can determine that the corresponding repeated segment duration is 16 ms.
  • Table 16 is an example of the second mapping relationship in Table 4A, and it can be understood that the method of indicating the second mapping relationship may be applicable to each embodiment of the present application, which is not limited thereto.
  • the network device or the terminal device may include a hardware structure and/or a software module, and realize the above-mentioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • each functional module in each embodiment of the present application may be integrated into one processor, or physically exist separately, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.
  • an embodiment of the present application further provides a positioning device 700 for realizing the functions of the above method.
  • the device may be a software module or a system on a chip.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the apparatus 700 may include: a processing unit 710 and a transceiver unit 720 .
  • the transceiving unit 720 is configured to perform the steps of sending and receiving information in the above method embodiments.
  • the transceiver unit 720 is configured to receive indication information and send information.
  • the processing unit 710 is configured to determine, according to the indication information, the duration of the repeated segment and the like.
  • the transceiver unit 720 is configured to send indication information and receive information.
  • the processing unit 710 is configured to determine a repetition segment duration and the like according to the beam elevation angle of the terminal device.
  • processing unit 710 and the transceiver unit 720 can also perform other functions.
  • processing unit 710 and the transceiver unit 720 can also perform other functions.
  • FIGS. 3 to 6 or related descriptions in other method embodiments, and details are not repeated here.
  • a communication device 800 provided in an embodiment of the present application is provided.
  • the device shown in FIG. 8 may be a hardware circuit implementation manner of the device shown in FIG. 7 .
  • the locating device may be applicable to the flow chart shown above, and execute the functions of the first communication device (or network device) or the second communication device (or terminal device) in the above method embodiments.
  • FIG. 8 only shows the main components of the communication device.
  • the communication device 800 includes a processor 810 and an interface circuit 820 .
  • the processor 810 and the interface circuit 820 are coupled to each other.
  • the processor 810 may be a logic circuit
  • the interface circuit 820 may be a transceiver or an input-output interface.
  • the mobile positioning device 800 may further include a memory 830 for storing instructions executed by the processor 810 or storing input data required by the processor 810 to execute the instructions or storing data generated after the processor 810 executes the instructions.
  • the processor 810 is used to implement the functions of the processing unit 710
  • the interface circuit 820 is used to implement the functions of the transceiver unit 720 .
  • the processor in the embodiments of the present application can be a central processing unit (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • a general-purpose processor can be a microprocessor, or any conventional processor.
  • the processor can be random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable In addition to programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art middle.
  • An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
  • the storage medium may also be a component of the processor.
  • the processor and storage medium can be located in the ASIC.
  • the ASIC can be located in a network device or a terminal device. Certainly, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) having computer-usable program code embodied therein.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer programs or instructions, and the computer programs or instructions are executed by a computer (for example, a processor) to implement the embodiments of the present application Part or all of the steps of any method performed by any device.
  • a computer for example, a processor
  • the embodiment of the present application also provides a computer program product including a computer program or a set of instructions, when the computer program product is run on a computer, some or all steps of any one of the above methods are executed.
  • the present application also provides a chip or a chip system, and the chip may include a processor.
  • the chip may also include memory (or storage module) and/or transceiver (or communication module), or, the chip is coupled with memory (or storage module) and/or transceiver (or communication module), wherein the transceiver ( or communication module) can be used to support the chip for wired and/or wireless communication, the memory (or storage module) can be used to store a program or a set of instructions, and the processor calls the program or the set of instructions can be used to implement the above method embodiments, An operation performed by the first communication apparatus (or terminal device) or the second communication apparatus (or network device) in any possible implementation manner of the method embodiment.
  • the system-on-a-chip may include the above-mentioned chips, and may also include the above-mentioned chips and other discrete devices, such as memory (or storage module) and/or transceiver (or communication module).
  • the present application further provides a communication system, which may include the above first communication device (or terminal device) and the second communication device (or network device).
  • the communication system may be used to implement the operations performed by the first communication device (or terminal device) or the second communication device (or network device) in any of the foregoing method embodiments and any possible implementation manners of the method embodiments.
  • the communication system may have a structure as shown in FIG. 1 .
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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Abstract

本申请实施例提供了一种通信方法，该方法可以包括：接收指示信息，所述指示信息用于指示第一重复分段时长，所述第一重复分段时长是根据第一映射关系和终端设备当前的波束仰角确定的，所述第一映射关系包括波束仰角与重复分段时长的对应关系；根据所述指示信息和所述第一映射关系确定所述第一重复分段时长。该方法通过根据终端设备的波束仰角确定该次信息传输的重复分段时长，能够避免通信设备造成的定时提前累计误差过大而无法通讯同步的问题，提高了通信效率。

Description

通信方法及装置
本申请要求于2021年09月30日提交国家知识产权局、申请号为202111166218.0、申请名称为“通信方法及装置”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
本申请实施例涉及通信领域。尤其涉及一种通信方法及装置。
背景技术
非地面通信网络(non-terrestrial network,NTN)技术中采用典型的如卫星、高空平台(high-altitude platforms,HPA)等通信设备参与布网，能够实现全球范围网络覆盖。NTN通信与地面通信网络融合，可以提供共同构成全球无缝覆盖的海、陆、空、天一体化综合通信网。在NTN中，低轨道(low earth orbit，LEO)卫星系统具有相对较低的往返传播时延(round-trip delay,RTD)，并具有相对较少的路径损耗，可以应用于物联网(Internet of Things,IoT)系统中。
由于IoT系统终端发送功率水平相对较弱，以及终端发送天线等硬件因素的制约，导致IoT上行传输的信噪比较低。因此为了提升系统上行数据和导频序列的发送的接收信噪比，及导频序列检测性能，IoT终端在上行发送时需要对传输块使用一定次数的重复。目前，长期演进(long term evolution，LTE)标准中规定了上行数据或导频传输的最大连续传输时间。由于NTN系统中网络设备的移动性，在该最大连续传输时间内，NTN系统的定时提前(timing advance,TA)的累计误差，将带来通讯失步的后果，影响通信。
因此设计一种新的重复传输机制，保证NTN通信设备的信息同步，提高通信效率，是亟待解决的问题。
发明内容
本申请实施例提供一种通信方法及装置，能够避免通信设备造成的TA累计误差过大而无法通讯同步的问题，提高了通信效率。
第一方面，提供了一种通信方法，该方法可以包括：第一通信装置接收指示信息，该指示信息用于指示第一重复分段时长，该第一重复分段时长是根据第一映射关系和终端设备当前的波束仰角确定的，该第一映射关系包括波束仰角与重复分段时长的对应关系；第一通信装置根据该指示信息和该第一映射关系确定该第一重复分段时长。
第一通信装置可以是终端设备。该方法通过根据终端设备的波束仰角确定该次信息传输的重复分段时长，在网络设备的位置变化时，能够提供合理的重复分段时长，便于终端设备与网络设备的通讯同步。
可以理解的是，该指示信息可以是索引，用于终端设备在第一映射关系中查找该索引对应的重复分段时长；该指示信息也可以直接指示该重复分段时长，即可以是具体的时长 数值。本申请对此不作限定。
结合第一方面，在第一方面的某些实现方式中，第一通信装置根据该第一重复分段时长发送第一消息。
可以理解的是，该第一消息为终端设备向网络设备发送的消息。该第一消息可以包括上行数据或导频。示例性的，第一消息包括窄带物理上行共享信道(narrowband physical uplink share channel，NPUSCH)，也可以包括窄带物理随机接入信道(narrowband physical randomaccess channel，NPRACH)。
结合第一方面，在第一方面的某些实现方式中，该第一映射关系是从多个映射关系中确定的，该多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括该波束仰角与该重复分段时长的对应关系，其中，该第一映射关系是第一参数对应的映射关系，该第一参数是该终端设备当前使用的通信参数。
也就是说，重复分段时长与终端设备的波束仰角有关，还可以与终端设备该次信息传输的通信参数有关。
结合第一方面，在第一方面的某些实现方式中，该通信参数包括消息格式和/或系统参数。
该方案综合考虑了通信参数、波束仰角与重复分段时长之间的映射关系，能够针对不同的通信参数确定不同的重复分段时长，进一步提高了信息传输的重复分段时长的合理性。
可以理解的是，该通信参数可以是在该次信息传输之前，网络设备为该次数据传输配置资源时调度的，也可以是终端设备在信息传输之前上报的，本申请实施例对此不作限定。
结合第一方面，在第一方面的某些实现方式中，在该第一映射关系中，该波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，或者，该重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。
其中，“相邻”可以是按照大小顺序排列的波束仰角(或重复分段时长)中相邻的波束仰角(或重复分段时长)。
该方案通过对波束仰角或者重复分段时长进行等差均分，对于等距的波束仰角区间或者等距的重复分段时长区间，确定对应的重复分段时长，能够进一步节省指示信令。其中，通过重复分段时长均分确定与波束仰角的映射关系的方案，能够根据重复分段时长的变化率为不同的波束仰角确定更为合理的重复分段时长，进一步提高通信效率。
结合第一方面，在第一方面的某些实现方式中，在该第一映射关系中，该重复分段时长中的每个重复分段时长包括至少一个重复单元。
结合第一方面，在第一方面的某些实现方式中，在该第一映射关系中，该至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
也就是说，重复分段时长可以是由多个重复单元构成的，也可以通过均分重复单元个数的方式为不同的波束仰角确定重复单元个数，可以适用于传输NPRACH的场景。
结合第一方面，在第一方面的某些实现方式中，在第一通信装置接收指示信息之前，该第一通信装置发送第一信息，第一信息包括位置信息，该位置信息用于确定该终端设备当前的波束仰角。
也即，终端设备可以将自身的位置信息上报网络设备。可以理解的是，终端设备可以周期性地向网络设备上报位置信息。可选的，网络设备也可以根据星历表确定终端设备的 位置信息，从而确定其波束仰角。本申请实施例对此不作限定。
结合第一方面，在第一方面的某些实现方式中，重复分段时长中的至少一个重复分段时长小于或等于该至少一个重复分段时长对应的最大可连续传输时间。
其中，最大可连续传输时间可以是根据定时误差(timing error，Te)和定时提前变化率(TA rate)确定的。
第二方面，提供了一种通信方法，该方法可以包括：第二通信装置根据第一映射关系确定第一重复分段时长，该第一映射关系包括波束仰角与重复分段时长的对应关系，该第一重复分段时长为第一波束仰角对应的重复分段时长，该第一波束仰角为终端设备当前的波束仰角；第二通信装置发送指示信息，该指示信息用于指示该第一重复分段时长。
该第二通信装置可以是网络设备。
结合第二方面，在第二方面的某些实现方式中，第二通信装置根据该第一重复分段时长接收第一消息。
结合第二方面，在第二方面的某些实现方式中，该第一映射关系是从多个映射关系中确定的，该多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括该波束仰角与该重复分段时长的对应关系，其中，该第一映射关系是第一参数对应的映射关系，该第一参数是该终端设备当前使用的通信参数。
结合第二方面，在第二方面的某些实现方式中，该通信参数包括消息格式和/或系统参数。
结合第二方面，在第二方面的某些实现方式中，在该第一映射关系中，该波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，或者，该重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。
结合第二方面，在第二方面的某些实现方式中，在该第一映射关系中，该重复分段时长中的每个重复分段时长包括至少一个重复单元。
结合第二方面，在第二方面的某些实现方式中，在该第一映射关系中，该至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
结合第二方面，在第二方面的某些实现方式中，重复分段时长中的至少一个重复分段时长小于或等于该至少一个重复分段时长对应的最大可连续传输时间。
其中，最大可连续传输时间可以是根据定时误差(timing error，Te)和定时提前变化率(TA rate)确定的。
应理解，第二方面是与第一方面对应的网络侧的方法，第一方面中的解释、补充和有益效果的描述适用于第二方面，此处不再赘述。
第三方面，提供一种通信装置，该通信装置可以用于第一方面的第一通信装置，该通信装置可以是终端设备，也可以是终端设备中的装置(例如，芯片，或者芯片系统，或者电路)，或者是能够和终端设备匹配使用的装置。一种可能的实现中，该通信装置可以包括执行第一方面中所描述的方法/操作/步骤/动作所一一对应的模块或单元，该模块或单元可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。
一种可能的实现中，该通信装置可以包括收发单元和处理单元，该收发单元用于接收指示信息，该指示信息用于指示第一重复分段时长，该第一重复分段时长是根据第一映射关系和终端设备当前的波束仰角确定的，该第一映射关系包括波束仰角与重复分段时长的 对应关系；该处理单元用于根据该指示信息和该第一映射关系确定该第一重复分段时长。
结合第三方面，在第三方面的某些实现方式中，收发单元还用于根据该第一重复分段时长发送第一消息。
结合第三方面，在第三方面的某些实现方式中，该第一映射关系是从多个映射关系中确定的，该多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括该波束仰角与该重复分段时长的对应关系，其中，该第一映射关系是第一参数对应的映射关系，该第一参数是该终端设备当前使用的通信参数。
结合第三方面，在第三方面的某些实现方式中，该通信参数包括消息格式和/或系统参数。
结合第三方面，在第三方面的某些实现方式中，在该第一映射关系中，该波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，或者，该重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同(等差均分)。
结合第三方面，在第三方面的某些实现方式中，在该第一映射关系中，该重复分段时长中的每个重复分段时长包括至少一个重复单元。
结合第三方面，在第三方面的某些实现方式中，在该第一映射关系中，该至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
结合第三方面，在第三方面的某些实现方式中，在收发单元接收指示信息之前，该收发单元还用于发送第一信息，第一信息包括位置信息，该第一位置信息用于确定该终端设备当前的波束仰角。
结合第三方面，在第三方面的某些实现方式中，重复分段时长中的至少一个重复分段时长小于或等于该至少一个重复分段时长对应的最大可连续传输时间。
其中，最大可连续传输时间可以是根据定时误差(timing error，Te)和定时提前变化率(TA rate)确定的。
第四方面，提供一种通信装置，该通信装置可以用于执行第二方面的方法，该通信装置可以是网络设备，也可以是网络设备中的装置(例如，芯片，或者芯片系统，或者电路)，或者是能够和网络设备匹配使用的装置。一种可能的实现中，该通信装置可以包括执行第二方面中所描述的方法/操作/步骤/动作所一一对应的模块或单元，该模块或单元可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。
一种可能的实现中，该通信装置可以包括收发单元和处理单元，该处理单元可以用于根据第一映射关系确定第一重复分段时长，该第一映射关系包括波束仰角与重复分段时长的对应关系，该第一重复分段时长为第一波束仰角对应的重复分段时长，该第一波束仰角为终端设备当前的波束仰角；该收发单元可以用于发送指示信息，该指示信息用于指示该第一重复分段时长。
结合第四方面，在第四方面的某些实现方式中，收发单元还用于根据该第一重复分段时长接收第一消息。
结合第四方面，在第四方面的某些实现方式中，该第一映射关系是从多个映射关系中确定的，该多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括该波束仰角与该重复分段时长的对应关系，其中，该第一映射关系是第一参数对应的映射关系，该第一参数是该终端设备当前使用的通信参数。
结合第四方面，在第四方面的某些实现方式中，该通信参数包括消息格式和/或系统参数。
结合第四方面，在第四方面的某些实现方式中，在该第一映射关系中，该波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，或者，该重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。
结合第四方面，在第四方面的某些实现方式中，在该第一映射关系中，该重复分段时长中的每个重复分段时长包括至少一个重复单元。
结合第四方面，在第四方面的某些实现方式中，在该第一映射关系中，该至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
结合第四方面，在第四方面的某些实现方式中，在该根据第一映射关系确定第一重复分段时长之前，该收发单元还用于获取第一信息，第一信息包括位置信息，该位置信息用于确定该终端设备当前的波束仰角。
结合第四方面，在第四方面的某些实现方式中，重复分段时长中的至少一个重复分段时长小于或等于该至少一个重复分段时长对应的最大可连续传输时间。
其中，最大可连续传输时间可以是根据定时误差(timing error，Te)和定时提前变化率(TA rate)确定的。
应理解，第一方面的解释、补充与有益效果的描述对于对应的装置侧(第三、四方面)同样适用，不再赘述。
第五方面，提供一种计算机可读介质，该计算机可读介质存储用于通信装置执行的程序代码，该程序代码包括用于执行第一方面或第二方面，或，第一方面或第二方面中任一可能的实现方式，或，第一方面或第二方面中所有可能的实现方式的方法中的通信方法的指令。
第六方面，提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行上述第一方面或第二方面，或，第一方面或第二方面中任一可能的实现方式，或，第一方面或第二方面中所有可能的实现方式的方法。
第七方面，提供了一种通信系统，该通信系统包括具有实现上述第一方面或第二方面，或，第一方面或第二方面中任一可能的实现方式，或，第一方面或第二方面中所有可能的实现方式的方法及各种可能设计的功能的装置。
第八方面，提供了一种通信装置，包括与存储器耦合的处理器，该处理器用于执行该存储器中存储的计算机程序或指令，以执行上述第一方面或第二方面，或，第一方面或第二方面中任一可能的实现方式，或，第一方面或第二方面中所有可能的实现方式中的方法。
第九方面，提供了一种芯片，芯片包括处理器和通信接口，该通信接口用于与外部器件或内部器件进行通信，该处理器用于实现上述第一方面或第二方面，或，第一方面或第二方面中任一可能的实现方式，或，第一方面或第二方面中所有可能的实现方式中的方法。
可选地，该芯片还可以包括存储器，该存储器中存储有指令，处理器用于执行存储器中存储的指令或源于其他的指令。当该指令被执行时，处理器用于实现上述第一方面或第二方面或其任意可能的实现方式中的方法。
可选地，该芯片可以集成在终端设备上，或者网络设备上。
附图说明
图1是适用于本申请实施例的一种通信系统示意图。
图2是适用于本申请实施例的一种卫星通信系统示意图。
图3是本申请实施例提出的一种通信方法的示意图。
图4是本申请实施例提出的一种终端设备与卫星的位置关系示意图。
图5是本申请实施例提出的一种通信方法的流程示意图。
图6是本申请实施例提出的另一种通信方法的流程示意图。
图7是本申请实施例提出的一种通信装置的示意性框图。
图8是本申请实施例提出的另一种通信装置的示意性框图。
具体实施方式
本申请实施例的技术方案可以应用于无人机、卫星通信系统、高空平台(high altitude platform station，HAPS)通信等NTN系统。以卫星通信系统为例，其可以融合到现有的地面移动通信系统中，例如：LTE系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、第五代(5th generation，5G)系统或新无线(new radio，NR)、设备对设备(device-to-device，D2D)通信系统、机器通信系统、车联网通信系统、卫星通信系统或者未来的通信系统等。
图1示出了适用于本申请实施例的通信系统的一种架构的示意图。如图1所示，该通信系统可以包括至少一个网络设备，例如图1所示的网络设备；该通信系统还可以包括至少一个终端设备，例如图1所示的终端设备。网络设备与终端设备可通过无线链路通信。
本申请实施例中提及的卫星，可以为卫星基站，或者为搭载在卫星上的网络侧设备。本申请中将卫星基站、关口站或地面基站称为网络设备。
本申请中的网络设备可以是LTE中的演进型基站(evolutional Node B，eNB或eNodeB)；或者5G网络中的基站，宽带网络业务网关(broadband network gateway，BNG)，汇聚交换机或非第三代合作伙伴项目(3rd generation partnership project，3GPP)接入设备等，本申请实施例对此不作具体限定。可选的，本申请实施例中的基站可以包括各种形式的基站，例如：宏基站、微基站(也称为小站)、中继站、接入点、下一代基站(gNodeB，gNB)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、移动交换中心以及设备到设备(Device-to-Device，D2D)、车辆外联(vehicle-to-everything，V2X)、机器到机器(machine-to-machine，M2M)通信、物联网(Internet of Things)通信中承担基站功能的设备等，本申请实施例对此不作具体限定。
应理解，本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备是LTE系统中的演进型基站(evolutional nodeB，eNB或eNodeB)，还可以为5G系统中的基站的一个或一组(包括多个天线面板)天线面板等，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备、D2D通信或机器通信中承担基站功能的终端、以及5G网络中的网络设备或者未来演进的网络中的网络设备等，本申请实施例并不限定。
本申请实施例中提及的终端设备，可以为物联网终端，具体可以指用户设备(user equipment，UE)、接入终端、用户单元(subscriber unit)、用户站、移动台(mobile station)、 远方站、远程终端、移动设备、用户终端(terminal equipment)、无线通信设备、用户代理或用户装置。终端设备还可以是卫星电话、蜂窝电话、智能手机、无线数据卡、无线调制解调器、机器类型通信设备、可以是无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备等等、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、高空飞机上搭载的通信设备、可穿戴设备、5G网络或者未来通信网络中的终端设备等，本申请不作限制。
本申请提供的方案可以应用于卫星通信范畴，例如3GPP各成员融合卫星通信和5G技术，图2示出了该技术的网络应用架构。地面移动终端接入网络；网络设备，比如，gNB，部署在卫星上，并通过无线链路与地面的核心网相连。同时，在卫星之间存在无线链路，完成基站与基站之间的信令交互和用户数据传输。图2中各个网元的说明如下：
终端设备：支持与卫星通信的移动设备，可以通过空口接入卫星网络并发起呼叫，上网等业务，该终端设备可以为前述的各种可能的终端。
网络设备：主要是提供无线接入服务，调度无线资源给接入终端，提供可靠的无线传输协议和数据加密协议等，该网络设备可以为前述各种可能的网络设备。
核心网：用户接入控制，移动性管理，会话管理，用户安全认证，计费等业务。它有多个功能单元组成，可以分为控制面和数据面的功能实体。接入与移动管理单元(access and mobility management function，AMF)，负责用户接入管理，安全认证，还有移动性管理。用户面单元(user plane function，UPF)负责管理用户面数据的传输，流量统计，安全窃听等功能,会话管理单元(session management function，SMF)主要负责与数据面交互，创建、更新和删除会话。
地面站：负责转发卫星基站和核心网之间的信令和业务数据。
如图2所示，卫星和地面站为网络设备，用于为终端提供通信服务。其中，地面站还可以称作关口站(gateway)、信关站等。卫星与终端之间的链路称为服务链路(service link)，卫星与关口站之间的链路为馈电链路(feeder link)。
当卫星工作在透传(transparent)模式时，卫星具有中继转发的功能。地面站具有基站的功能或部分基站功能。可选的，可以将地面站看作地面基站；或者，地面基站可以与地面站分开部署。
当卫星工作在再生(regenerative)模式时，卫星具有数据处理能力、具有基站的功能或部分基站功能，可以将卫星看作基站。
应理解，本申请各实施例中计算重复分段时长过程中采用的TA变化率(TA rate)综合考虑服务链路和馈电链路的往返TA的变化率。本申请实施例提供的方法适用于卫星的透传模式和再生模式，本申请实施例对此不作限定。
相比于地面通信网络，NTN中采用典型的如卫星、HPA等通信设备参与布网技术， 以实现真正的全球范围网络覆盖，其优势与发展战略重要性不言而喻。在NTN中，基于卫星运行轨道高度可将NTN系统做四类划分：即低轨道LEO卫星系统，轨道高度为500～2000km、中轨道(medium earth orbit，MEO)卫星系统，轨道高度为2000～20000km、高轨道(high earth orbit，HEO)卫星系统，轨道为高度大于20000km的椭圆轨道，以及同步轨道(geostationary earth orbit,GEO)卫星系统，轨道高度为35800km。卫星通信系统与5G相融合，取长补短，共同构成全球无缝覆盖的海、陆、空、天一体化综合通信网，满足用户无处不在的多种业务需求，是未来通信发展的重要方向。
在NTN中，LEO卫星系统具有相对较低的往返传播时延RTD，并具有相对较少的路径损耗，可以应用于物联网(Internet of Things,IoT)系统中。
目前，由于IoT系统终端设备发送功率水平相对较弱，以及终端设备发送天线等硬件因素的制约，导致IoT上行传输的信噪比较低。因此为了提升系统上行数据和导频序列的发送的接收信噪比，及导频序列检测性能，物理上行共享信道(physical uplink share channel，PUSCH)和窄带物理随机接入信道NPRACH需要重复传输。在地面蜂窝系统中，IoT通信场景中TA及TA变化率相对于NTN场景下小的多，因此在一次上行传输开始之前计算TA、多普勒频移等的预补偿量的有效期相对NTN系统较长，因此在地面蜂窝LTE系统中，IoT上行重复发送的可连续传输时间相对较长。示例性的，3GPP标准TS36.211中规定，NPRACH的可连续传输时间可以是64或者16个重复单元(repetition unit)，LTE的标准中也规定NPUSCH的连续传输时长可以是250ms在上述连续传输时长结束后可以插入一段时间间隔，用于终端设备的上行同步。
但是，在NTN系统中如果延用LTE关于连续传输时长的现有标准，将导致TA误差的累计远远超过LTE规定的定时误差(timing error，Te)，这将导致通讯失步。因此在基于NTN的IoT(NTN-IoT)的上行链路传输中考虑引入比地面系统中更多的上行间隔(UL gaps)，以便在每次间隔中能够及时对终端使用的TA补偿量等进行调整和更新，使得在整个重复周期内可以维持通讯同步。
针对上述问题，本申请提出一种通信方法，该方法如图3所示，可以包括如下步骤：
步骤301：第二通信装置根据第一映射关系确定第一重复分段时长。
本申请涉及第一通信装置，第二通信装置。第一通信装置可以是上述终端设备，第二通信装置可以是上述网络设备。
该第一映射关系包括波束仰角与重复分段时长的对应关系，第一重复分段时长可以是第一波束仰角对应的重复分段时长，该第一波束仰角可以是第一通信装置当前的波束仰角。
其中，该第一映射关系可以是从多个映射关系中确定的，多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系可以是波束仰角与重复分段时长的对应关系。也就是说，确定重复分段时长的因素可以是波束仰角，也可以是波束仰角和通信参数。
该通信参数可以是消息格式和/或系统参数。示例地，消息格式可以是导频序列的格式，示例性的，TS36.211中规定的IoT导频序列的三种格式，比如，导频格式0(preamble format 0)，导频格式1(preamble format 1)和导频格式2(preamble format 2)。其中，NPRACH导频序列主要由循环前缀(cyclic prefix，CP)部分和序列部分组成，因此NPRACH导频传输重复的最小单元为P个符号组(symbol group)，其中每个符号组按照不同的导频格式包含不同的CP部分长度和序列部分长度。3GPP标准TR36.211中NPRACH导频 序列不同格式下对应的结构如表1：
表1 NPRACH导频序列结构
导频格式 P T cp T SEQ
0 4 2048T s 5*8192T s
1 4 8192T s 5*8192T s
2 6 24576T s 3*24576T s
表1中，T cp是CP部分的长度，T SEQ是序列部分的长度，重复单元的时长＝重复单元包括的符号组个数*(T cp+T SEQ)。根据表1，导频格式0对应的导频序列的重复单元为P＝4个符号组，其重复单元的时长为5.6ms，导频格式1对应的导频序列的重复单元为P＝4个符号组，其重复单元的时长为6.4ms，导频格式2对应的导频序列的重复单元为P＝6个符号组，其重复单元的时长为19.2ms。
系统参数(numerology)可以包括：子载波间隔(subcarrier spacing，SCS)、PUSCH格式、子载波数(Tone)、资源单元(resource unit，RU)包含的时隙数(slot)等参数。示例性的，TS36.211中的系统参数可以有七种不同的情况(情况1-情况7)，如表2所示。
表2 IoT帧结构类型1对应的系统参数
系统参数 PUSCH SCS Tone Slot
情况1 1 3.75kHz 1 16
情况2 1 15kHz 1 16
情况3 1 15kHz 3 8
情况4 1 15kHz 6 4
情况5 1 15kHz 12 1
情况6 2 3.75kHz 1 4
情况7 2 15kHz 1 4
可以看出，七种不同的情况对应了七种不同的系统参数。其中，每种系统参数对应的重复单元长度T rep_unit可以根据NPUSCH的每个RU中前
Figure PCTCN2022120914-appb-000001
个时隙在时域上的连续重复次数
Figure PCTCN2022120914-appb-000002
(number of repetitions of identical slots for NPUSCH)、时隙数
Figure PCTCN2022120914-appb-000003
时隙长度T slot确定。比如，
Figure PCTCN2022120914-appb-000004
其中，根据TS36.211中的定义可知，对于情况3～5之外的四种情况，
Figure PCTCN2022120914-appb-000005
取值为1。
对于情况3～情况5，在NPUSCH传输重复次数
Figure PCTCN2022120914-appb-000006
时
Figure PCTCN2022120914-appb-000007
的取值不固定。以PUSCH的传输块包括一个资源单元(resource unit)为例，经过计算分析(表3)，NPUSCH传输重复次数小于8时情况3～5的NPUSCH传输导致的TA误差(error)均小于Te＝2.6us，即不需要分段，其中，Te的数值是协议规定的。当PUSCH的传输块包括其他数量的资源单元(resource unit)时，可能需要分段。
表3
Figure PCTCN2022120914-appb-000008
时的总体TA误差
Figure PCTCN2022120914-appb-000009
表3是以PUSCH的传输块包括一个资源单元(resource unit)为例计算的结果，可以理解的是，PUSCH的传输块还可以包括多个资源单元。
根据TS36.211中的定义可知，在NPUSCH传输重复次数
Figure PCTCN2022120914-appb-000010
大于或等于8时，
Figure PCTCN2022120914-appb-000011
取值为4，重复单元长度T rep_unit可以根据
Figure PCTCN2022120914-appb-000012
确定。
因此，可以根据
Figure PCTCN2022120914-appb-000013
的取值范围确定对应的重复分段时长。
可以理解的是，本申请实施例中以标准TS36.211为例对方案展开陈述，本申请实施例的方案也适用于其他标准或其他情况，均应在本申请保护范围之内。
上述第一映射关系可以是第一参数对应的映射关系，第一参数可以是第一通信装置当前使用的通信参数。可以理解的是，该通信参数可以是第二通信装置在为该次信息传输配置资源时调度的，比如，第二通信装置可以通过下行控制信息(downlink control information，DCI)向第一通信装置指示该通信参数，也即是说，第二通信装置已知该通信参数。又或者，第一通信装置可以在信息传输前，向第二通信装置发送指示信息，该指示信息用于指示本次信息传输采用的通信参数，也即是说，第一通信装置可以告知第二通信装置该通信参数。本申请实施例对此不作限定。
一种可能的实现中，在该第一映射关系中，波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，或者，重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。也就是说，可以通过均分波束仰角，为第一通信装置不同的波束仰角确定其对应的重复分段时长；也可以通过均分重复分段时长，在允许的连续传输时长内，为不同的传输时长确定对应的波束仰角。
一种可能的实现中，在第一映射关系中，重复分段时长中的每个重复分段时长包括至少一个重复单元，至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
类似地，可以通过均分重复单元的个数，为第一通信装置不同的波束仰角确定其对应的重复分段时长包括的重复单元的个数，该方案可以适用于NPRACH的传输。
上述相邻的含义可以是按照大小顺序排列后相邻的两个波束仰角或者两个重复分段时长。示例地，波束仰角按照大小顺序排列，可以是10°、20°、30°、40°、……，其中10°和20或者20°和30°可以视为相邻的波束仰角。
可选地，在根据第一映射关系确定第一重复分段时长之前，第二通信装置可以获取第一信息，第一信息可以包括位置信息，该位置信息可以用于确定第一通信装置当前的波束仰角。其中，第二通信装置获取第一信息可以是第二通信装置获取终端周期性上报的位置信息，比如全球导航卫星系统(global navigation satellite system，GNSS)位置信息；又或者，第二通信装置可以获取当前在网络侧存储的终端在上一时刻上报的位置信息，比如 GNSS位置信息。本申请实施例对此不作限定。
步骤302：第二通信装置向第一通信装置发送指示信息，相应地，第一通信装置接收该指示信息。
该指示信息可以用于指示第一重复分段时长。
应理解，该指示信息可以是根据第一映射关系确定的索引，比如，比特字段，第一通信装置在接收到该索引后根据第一映射关系查找对应的重复分段时长。可选的，第一通信装置可以提前存储第一映射关系。考虑到信息传输的格式或者系统参数会发生变化，第一通信装置也可以提前存储上述包括第一映射关系的多个映射关系。对应地，第二通信装置也应至少存储第一映射关系。可选的，第一映射关系和/或上述包括第一映射关系的多个映射关系，也可以是第二通信装置发送给第一通信装置的。本申请实施例对此不作限定。
可以理解的是，该指示信息也可以是第一重复分段时长的具体的数值，这种情况下，第一通信装置无需存储映射关系。
另外，第二通信装置可以在每次信息传输前向第一通信装置发送指示信息，用于指示各信息传输的重复分段时长；第二通信装置也可以在上一次重复分段时长结束后，根据第一通信装置的实时位置确定第一通信装置的波束仰角，判断重复分段时长是否需要更新，如果第一通信装置的位置未发生变化，或者，第一通信装置的位置变化不足以导致重复分段时长的变化，则第二通信装置在下一次重复分段时长开始前(也即下一次信息传输前)无需再发送指示信息；如果第一通信装置的位置发生变化，并足以导致重复分段时长的变化，则第二通信装置根据第一通信装置变化后的位置信息确定实时波束仰角，再根据该波束仰角确定新的重复分段时长，并向第一通信装置发送指示信息，用于指示该新的重复分段时长，第一通信装置在下一次信息传输中则可以根据该新的重复分段时长发送信息。
应理解，上述重复分段时长小于或等于该重复分段时长对应的最大可连续传输时间。该最大可连续传输时间可以是根据定时误差Te和TA确定的。
示例地，最大可连续传输时间(the maximum allowed time-continuous transmission duration)T seg_max、定时误差Te和TA变化率TA rate可以满足下述关系：
Figure PCTCN2022120914-appb-000014
其中，TA rate可以是根据第二通信装置(比如卫星)的轨道高度H以及终端指向第二通信装置的波束仰角θ确定的。
本申请实施例以
Figure PCTCN2022120914-appb-000015
大于8为例计算重复分段时长，可以理解的是，
Figure PCTCN2022120914-appb-000016
也可以小于或等于8，重复分段时长的计算方法类似，此处不再赘述。
一种可能的实现中，该指示信息还可以用于指示重复单元个数(time-continuous repetition number)，本申请实施例对此不作限定。其中，重复单元可以是上述NPUSCH中包括一定数量的时隙的单元(NPUSCH repetition unit)，也可以是上述NPRACH中包括一定数量的符号组的单元(NPRACH repetition unit)。
一种可能的实现中，该指示信息可以承载在系统信息块(system information block，SIB)消息中发送。
可选地，该方法还可以包括：
步骤303：第一通信装置根据第一重复分段时长向第二通信装置发送第一消息，相应的，第二通信装置根据该第一重复分段时长接收第一消息。
示例地，第一重复分段时长假设为24ms，第一通信装置向第二通信装置重复发送第一消息，每次的发送时长为24ms，24ms结束后，第一通信装置可以在下次重复传输之前对TA补偿量等进行调整。
上述方法通过根据第一通信装置的波束仰角确定该次信息传输的重复分段时长，在第二通信装置的位置高速变化时，为第一通信装置提供合理的重复分段时长，能够避免第一通信装置与第二通信装置TA的积累误差过大，便于第一通信装置与第二通信装置的通讯同步，提升了通信效率。
还应理解，上述方法根据第一通信装置的波束仰角确定该次信息传输的重复分段时长，其中，第一通信装置的波束仰角也可以由其他角度替代，示例地，如图4所示，该角度可以是第二通信装置(比如卫星)的波束角，比如，图4中的角度2，该波束角可以通过三角函数关系和第一通信装置的波束仰角相互转化。类似的角度均应在本申请保护范围之内。
图3以第二通信装置指示第一通信装置重复分段时长为例，可以理解的是，第一通信装置也可以根据映射关系确定重复分段时长，对应地，第一通信装置向第二通信装置发送指示信息，用于指示该次信息传输的重复分段时长。这种情况下，第一通信装置需要提前存储映射关系。该方法中第一通信装置的方法可以参考图3中第二通信装置的方法，不再赘述。
示例地，第一通信装置接收第二通信装置下发的星历信息，通过星历中的卫星位置与速度，计算自身的波束仰角。根据该波束仰角和上述映射关系确定重复分段时长，并可以将该重复分段时长携带在上行数据中告知第二通信装置。该方案可以适用于上行数据(如NPUSCH)的传输。
一种可能的实现中，第二通信装置可以向第一通信装置指示第二映射关系，该第二映射关系可以是第二通信装置根据第一通信装置的波束仰角确定的，该第二映射关系可以包括消息格式与重复分段时长之间的对应关系。
示例地，在一个小区(波束)中的第一通信装置可能会采用不同的系统参数，第二通信装置在下发SIB广播的时候，可以把一组信令放在广播消息里发给所有的第一通信装置。而对一个波束里的第一通信装置，都用一个共同的波束仰角。第二通信装置可以根据当前的波束角度确定系统参数和重复分段时长的对应关系，比如当前波束仰角是63.8度，第二通信装置把63.8度对应的七个系统参数分别对应的七种重复分段时长承载在SIB消息里以广播的形式发送。第一通信装置解码SIB后，得到了一组重复分段时长，可以根据自己当前采用的系统参数来选择应用SIB消息包括的7个值中的一个。
可以理解的是，本申请各实施例中不限定第一通信装置和第二通信装置的数量。在通信系统包括多个第一通信装置时，指示信息可以分次发送，也可以以广播或组播的方式一次发送，本申请实施例对此不作限定。
本申请提出一种实施例，该实施例中，终端设备发送上行数据的场景中，第二通信装置根据均分第一通信装置的波束仰角的方式确定各波束仰角对应的重复分段时长为例，并假设卫星轨道高度为600KM，即LEO-600，进行描述。其中，第一通信装置为终端设备，第二通信装置为网络设备。该实施例如图5所示，可以包括如下步骤：
步骤501：网络设备获取系统参数。
该系统参数可以为图3中步骤301中通信参数的一例，可以参考图3中步骤301中的描述。
步骤502：网络设备获取终端设备的位置信息。
位置信息以及位置信息的获取可以参考图3中步骤301中的描述。
步骤503：网络设备根据位置信息确定终端设备的波束仰角。
步骤504：网络设备根据波束仰角和第一映射关系确定重复分段时长。
该步骤可以参考图3中步骤301的描述。
应理解，步骤503和步骤504可以分别进行，也可以同步进行。本申请实施例对此不作限定。
步骤505：网络设备向终端设备发送指示信息，相应的，终端设备接收该指示信息。
该指示信息用于指示重复分段时长。该步骤可以参考图3中步骤302的描述。
步骤506：终端设备根据重复分段时长发送上行数据。
可选的，该上行数据为NPUSCH。
该NPRACH为图3中步骤303中第一消息的一例。
在该实施例中，当
Figure PCTCN2022120914-appb-000017
大于或等于8时，图3中所述多个映射关系可以如表4A所示：
表4 ALEO-600NPUSCH重复分段时长表
Figure PCTCN2022120914-appb-000018
应理解，表4A只作为一种示例而非限定，可能以表4A的全部或部分内容作为实施，本申请实施例对此不作限定。
表4A中示出了波束仰角对应的最大分段传输时长、重复分段时长、重复单元个数的计算结果，当波束仰角为40°时，对应的最大分段传输时长为36.89ms，重复分段时长为32ms，重复单元个数为1。当波束仰角的角度处于上述表格中示出的两个相邻角度的区间中时，可以采用该区间的最小角度对应的最大分段时长、重复分段时长、重复单元个数等。当波束仰角为46°时，处于40°—50°的区间，对应的最大分段传输时长可以采用40°对应的36.89ms。其他角度类似，不再赘述。需要注意的是，当波束仰角大于或等于83.67°时，由于该角度对应的最大分段时长大于标准中规定的最大可持续传输时长，可以采用 90°对应的最大分段传输时长、重复分段时长、重复单元个数灯，在80°—90°的区间中，波束仰角小于83.67°时，可以采用80°对应的最大分段传输时长、重复分段时长、重复单元个数等。
表4A中，N为每个重复分段中可以包含的最大NPUSCH重复单元的数量，X为根据计算出的最大可连续传输时间T seg_max确定的重复分段时长，情况1-情况7表示七种不同的系统参数。
步骤504中的第一映射关系可以是表4A中某一个情况与X和N的对应关系。示例地，该第一映射关系可以是表5：
表5第一映射关系
Figure PCTCN2022120914-appb-000019
在该实施例中，波束仰角以10°的差值进行均分，分为九等份。应理解，该均分差值仅作为一种示例。比如，均分差值也可以是5°，15°，等等。本申请实施例对此不作限定。
可以理解的是，步骤504中的第一映射关系可以是表4A中某一个情况与X的对应关系，或者，某一个情况与N的对应关系。本申请实施例对此不作限定。
还应理解，表4A中N可以通过T seg_max和重复单元时长T rep_unit确定。示例地，上述三个参数可以满足下述关系：
Figure PCTCN2022120914-appb-000020
根据表4A可知，LEO-600场景的NPRACH重复分段时长X有16个不同的时长取值，其取值集合为：X＝{16ms,24ms,28ms,30ms,32ms,36ms,40ms,42ms,48ms,56ms,64ms,80ms,82ms,160ms,162ms,256ms}。步骤503中的指示信息可以是4比特信令中的一个。示例地，当终端设备的波束仰角为20°，当前使用的系统参数为情况3，则网络设备可以确定该次传输对应的重复分段时长为16ms，向终端设备发送指示信息，该指示信息可以是0001,终端设备接收该指示信息，确定其对应的重复分段时长为16ms，根据16ms的重复分段时长向网络设备发送信息。
应理解，上述比特值只作为一种示例而非限定。
还应理解，表4A中的情况1，波束仰角为10°和20°时，对应的重复单元个数为0，这是因为标准中规定的情况1对应的一个重复单元时长已经大于最大可持续传输时长28.70ms,因此，网络设备无需指示该次信息传输的重复分段时长。
当
Figure PCTCN2022120914-appb-000021
小于8时，图3中所述多个映射关系可以如表4B所示：
表4 BLEO-600NPUSCH重复分段时长表
Figure PCTCN2022120914-appb-000022
Figure PCTCN2022120914-appb-000023
应理解，表4B只作为一种示例而非限定，可能以表4B的全部或部分内容作为实施，表4B也可以与表4A以结合的形式呈现，本申请实施例对此不作限定。
可以理解的是，表4B是当
Figure PCTCN2022120914-appb-000024
小于8时计算的重复分段时长与相关参数的映射关系，表4B中的M rep与前文的
Figure PCTCN2022120914-appb-000025
相同。根据表4B可知，LEO-600场景的NRACH重复分段时长X有16个不同的时长取值，其取值集合为：X＝{16ms,24ms,28ms,30ms,32ms,36ms,40ms,43ms,48ms,56ms,64ms,80ms,82ms,160ms,162ms,256ms}。表4A中不包括43ms。一种可能的方式，为了统一
Figure PCTCN2022120914-appb-000026
不同取值范围内的重复分段时长指示，可以将表4B中的43ms调整为42ms，也就是说，可以根据相同的一套重复分段时长来指示，即X＝{16ms,24ms,28ms,30ms,32ms,36ms,40ms,42ms,48ms,56ms,64ms,80ms,82ms,160ms,162ms,256ms}。表4B中波束仰角大于83.67°时，与重复分段时长的对应关系与表4A类似，不再赘述。
本实施例中按照LEO系统中终端到卫星的仰角划分，网络侧将NPUSCH的不同的系统参数情况在不同的仰角下需要使用的不超过Te限制的分段时长，可以仅用4-bit信令就向终端设备指示，为终端设备提供合理的重复分段时长，能够避免终端设备与网络设备TA的积累误差过大，便于终端设备与网络设备的通讯同步，提升了通信效率。此外，仰角的划分取值为10～90度之间的均匀划分，能够涵盖LEO卫星系统波束仰角的绝大部分情况。
本申请提出又一实施例，以根据均分标准规定的最大可持续传输时长的方式(256ms)确定各波束仰角对应的重复分段时长为例，在该实施例中，当
Figure PCTCN2022120914-appb-000027
大于或等于8时，图3中所述映射关系可以如表6所示：
表6 LEO-600NPUSCH重复分段时长表
Figure PCTCN2022120914-appb-000028
应理解，表6只作为一种示例而非限定，可能以表6的全部或部分内容作为实施，本申请实施例对此不作限定。
本实施例中，指示信息通过3比特表示，因此对于每种系统参数情况都需要配置8个不同的分段时长取值。而3GPP标准中规定上行数据信道传输最长经过256ms就需要插入一个用于下行同步的40ms的间隔。因此，本实施例中对于表1中的七种系统参数，设定 相同的一套预设分段时长取值，其取值集合为：X＝{32ms,64ms,96ms,128ms,160ms,192ms,224ms,256ms}。
可以理解的是，上述3比特的指示信息设计只是一种示例而非限定。
根据表6可知，本实施例提出的映射关系对于七种不同的系统参数有相同适用的角度区间，比如，对于七种系统参数情况中的任一种，当终端设备的波束仰角为50°时，网络设备可以通过SIB消息向终端设备指示3bit信令，指示终端设备在该次信息传输中可以使用的NPUSCH重复分段时长为32ms。
或者，为了覆盖所有的角度范围，可将表6扩充为表7：
表7 LEO-600NPUSCH重复分段时长表
波束仰角(deg) 10～27.98 63.80 72.88 77.25 79.83 81.54 82.76 83.67
情况1-X(ms) 0 64 96 128 160 192 224 256
情况2-X(ms) 24 64 96 128 160 192 224 256
情况3-X(ms) 16 64 96 128 160 192 224 256
情况4-X(ms) 24 64 96 128 160 192 224 256
情况5-X(ms) 28 64 96 128 160 192 224 256
情况6-X(ms) 24 64 96 128 160 192 224 256
情况7-X(ms) 28 64 96 128 160 192 224 256
应理解，表7只作为一种示例而非限定，可能以表7的全部或部分内容作为实施，本申请实施例对此不作限定。
表7中对所有系统参数，只有当仰角小于27.98°时，对应的重复分段时长X的取值不相同。
需要说明的是，
Figure PCTCN2022120914-appb-000029
时，情况3和情况4对应的10°～27.98°时的重复分段时长与表7不同，但因为差别很小，为了统一
Figure PCTCN2022120914-appb-000030
不同取值范围内的重复分段时长指示，可以采用相同映射关系，即如表7所示的映射关系。
该实施例与图5所示的方案仅在映射关系不同，以及表4A和表7中的数值结果不同，其他步骤与图5类似，此处不再赘述。
本实施例对于七种系统参数，可以使用同一套映射关系，可以起到节省信令开销的作用。此外，如果使用表7，在配置的时候也只需要额外配置一组角度下的分段值即可，相对于表2，进一步节省信令开销。对应地，在该实施例中，网络设备获取终端设备此次信息传输的通信参数可以作为可选的步骤。
本申请提供另一实施例，与图5所示的实施例中的卫星轨道不同，具体为1200km。在该实施例中，当
Figure PCTCN2022120914-appb-000031
大于或等于8时，图3中所述多个映射关系可以如表8A所示：
表8 ALEO-1200NPUSCH重复分段时长表
Figure PCTCN2022120914-appb-000032
Figure PCTCN2022120914-appb-000033
应理解，表8A只作为一种示例而非限定，可能以表8A的全部或部分内容作为实施，本申请实施例对此不作限定。
表8A中示出了波束仰角对应的最大分段传输时长、重复分段时长、重复单元个数的计算结果，当波束仰角为40°时，对应的最大分段传输时长为41.76ms，重复分段时长为32ms，重复单元个数为1。当波束仰角的角度处于上述表格中示出的两个相邻角度的区间中时，可以采用该区间的最小角度对应的最大分段时长、重复分段时长、重复单元个数等。当波束仰角为46°时，处于40°—50°的区间，对应的最大分段传输时长可以采用40°对应的41.76ms。其他角度类似，不再赘述。需要注意的是，当波束仰角大于或等于83.67°时，由于该角度对应的最大分段时长大于标准中规定的最大可持续传输时长，可以采用90°对应的最大分段传输时长、重复分段时长、重复单元个数灯，在80°—90°的区间中，波束仰角小于83.67°时，可以采用80°对应的最大分段传输时长、重复分段时长、重复单元个数等。
根据表8A，可知LEO-1200场景的NPUSCH重复分段时长X有16个不同的时长取值，其取值集合为：X＝{32ms,34ms,36ms,40ms,48ms,56ms,60ms,62ms,64ms,80ms,88ms,92ms,160ms,176ms,184ms,256ms}。
该实施例与图5所示的方案仅在卫星轨道高度不同，以及表4A中计算的数值结果不同，其他步骤与图5类似，表8A中波束仰角大于83.67°时，与重复分段时长的对应关系与表4A类似，此处不再赘述。
当
Figure PCTCN2022120914-appb-000034
小于8时，图3中所述多个映射关系可以如表8B所示：
表8B LEO-1200NPUSCH重复分段时长表
Figure PCTCN2022120914-appb-000035
应理解，表8B只作为一种示例而非限定，可能以表8B的全部或部分内容作为实施，表8B也可以与表8A以结合的形式呈现，本申请实施例对此不作限定。
可以理解的是，表8B是当
Figure PCTCN2022120914-appb-000036
小于8时计算的重复分段时长与相关参数的映射关系，表8B中的M rep与前文的
Figure PCTCN2022120914-appb-000037
相同。根据表8B可知，LEO-600场景的NRACH重复分段时长X有16个不同的时长取值，其取值集合为：X＝{32ms,34ms,36ms,40ms,41ms,48ms，49ms,56ms,60ms,62ms,63ms,88ms,92ms,93ms,184ms,256ms}。表8A中不包括43ms。一种可能的方式，为了统一
Figure PCTCN2022120914-appb-000038
不同取值范围内的重复分段时长指示，可以将表8B中的41ms,49ms,93ms分别调整为40ms,48ms,92ms，也就是说，可以根据相同的一套重复分段时长来指示，即X＝{32ms,34ms,36ms,40ms,48ms,56ms,60ms,62ms,64ms,80ms,88ms,92ms,160ms,176ms,184ms,256ms}。表8B中波束仰角大于83.67°时，与重复分段时长的对应关系与表8A类似，不再赘述。
本申请提出又一实施例，以根据均分最大可持续传输时长的方式确定各波束仰角对应的重复分段时长为例，在该实施例中，当
Figure PCTCN2022120914-appb-000039
小于8时与
Figure PCTCN2022120914-appb-000040
大于或等于8时，图3中所述多个映射关系相同，可以如表9所示：
表9 LEO-1200NPUSCH重复分段时长表
Figure PCTCN2022120914-appb-000041
应理解，表9只作为一种示例而非限定，可能以表9的全部或部分内容作为实施，本申请实施例对此不作限定。
该实施例与包括表6的实施例仅在卫星轨道高度不同，以及表6中数值结果不同，其他步骤与包括表6的实施例类似，此处不再赘述。对应地，在该实施例中，网络设备获取终端设备此次信息传输的通信参数可以作为可选的步骤。
本申请提出又一实施例，该实施例中，第一通信装置发送上行消息的场景中，第二通信装置根据均分第一通信装置的波束仰角的方式确定各波束仰角对应的重复单元个数为例，并假设卫星轨道高度为600KM，即LEO-600，进行描述。其中，第一通信装置为终端设备，第二通信装置为网络设备。该实施例如图6所示，可以包括如下步骤：
步骤601：网络设备获取消息格式。
该消息格式为图3中步骤301中通信参数的一例，可以参考图3中步骤301中的描述。
步骤602：网络设备获取位置信息。
位置信息以及位置信息的获取可以参考图3中步骤301中的描述。
步骤603：网络设备根据位置信息确定终端设备的波束仰角。
步骤604：网络设备根据波束仰角和第一映射关系确定重复单元个数。
该步骤可以参考图3中步骤301的描述。
应理解，步骤603和步骤604可以分别进行，也可以同步进行。本申请实施例对此不作限定。
步骤605：网络设备向终端设备发送指示信息。
该指示信息用于指示重复单元个数。该步骤可以参考图3中步骤302中的描述。
步骤606：终端设备根据重复单元个数发送导频。
可选的，该导频可以承载在NPRACH中。该NPRACH为图3中步骤303中第一消息 的一例。
应理解，该实施例中对
Figure PCTCN2022120914-appb-000042
的取值范围不作区分。
在该实施例中，图3中所述多个映射关系可以如表10所示：
表10 LEO-600NPRACH导频重复分段的重复单元个数表
Figure PCTCN2022120914-appb-000043
应理解，表10只作为一种示例而非限定，可能以表10的全部或部分内容作为实施，本申请实施例对此不作限定。
表10中，N为每个重复分段中可以包含的最大NRACH重复单元的数量，导频格式0-2表示三种不同的消息格式。
步骤604中的第一映射关系可以是表7中某一个导频格式与波束仰角、N的对应关系。示例地，该第一映射关系可以是表11：
表11 第一映射关系
Figure PCTCN2022120914-appb-000044
在该实施例中，波束仰角以10°的差值进行均分，分为九等份。应理解，该均分差值仅作为一种示例。比如，均分差值也可以是5°，15°，等等。本申请实施例对此不作限定。
还应理解，表10中N可以通过最大传输时长T seg_max和重复单元时长T rep_unit_rach确定。示例地，上述三个参数可以满足下述关系：
Figure PCTCN2022120914-appb-000045
示例性的，TS36.211中规定的导频序列有三种格式，分别为导频格式0，导频格式1和导频格式2，其对应的NPRACH重复单元时长T rep_unit_rach分别为：5.6ms，6.4ms，19.2ms。
根据表10可知，对于所有的导频格式，LEO-600场景下NPRACH导频发送重复分段中可包含的最大重复单元个数N有14个不同的取值，其取值集合为：N＝{1,2,4,5,6,7,8,10,12,14,16,25,29,64}。
步骤603中的指示信息可以通过4比特表示。示例性地，当终端设备的波束仰角为20°，当前使用的消息格式为导频格式0，则网络设备可以确定该次传输对应的重复分段时长可包含的最大重复单元个数为5，向终端设备发送指示信息，该指示信息可以是0100,终端设备接收该指示信息，确定其对应的重复分段时长可包含的最大重复单元个数为5，根据5个重复单元向网络设备发送导频序列。
应理解，上述比特值只作为一种示例而非限定。
本实施例针对上行导频发送的不同导频格式，并根据不同仰角划分设计了其NPRACH导频发送的重复分段中，在当前仰角情况下可包含的最大NPRACH重复单元的个数，并且对于所有的导频序列格式，设计结果体现了14个不同的分段取值，可使网络侧在SIB消息中仅用4比特信令就能针对所有不同的仰角情况为终端指示一个合适的导频分段时长(或个数)。能够为终端设备和网络设备提供合理的同步时间，避免通讯失步。
本申请提出又一实施例，以根据均分标准中规定的最大可持续传输时长包含的最大重复单元数的方式，确定各波束仰角对应的重复单元个数为例进行描述。举例来说，根据3GPP标准TS36.211可知，三种导频格式(导频格式0～2)对应的可连续传输的最大NPRACH重复单元数分别为64，64和16。为了统一对不同导频格式的指示比特数，本实施例中统一采用3比特指示字段的方式指示NPRACH分段时长包含的重复单元个数，即针对每种导频格式，需要分别配置8个分段时长取值N：
-导频格式0:预设重复单元个数取值为：N＝{8,16,24,32,40,48,56,64}；
-导频格式1:预设重复单元个数取值为：N＝{8,16,24,32,40,48,56,64}；
-导频格式2:预设重复单元个数取值为：N＝{2,4,6,8,10,12,14,16}。
导频格式0对应的第一个重复单元个数取值为8，其相应的仰角为50.90°。根据公式计算，在仰角小于50.90°时，重复单元个数还有7，6，5三个取值。因此为了满足重复单元个数适用于10～90度内的所有仰角角度，也即，重复单元个数的取值应包括10°～50.90°中的不同情况。并且，重复单元的个数应小于该仰角对应的标准中规定的最大可持续传输时长能够包括的最大重复单元的个数。因此，第一个预设分段值确定为N＝5。或者，为了保持每一个重复单元个数取值均为2的倍数，则第一个重复单元个数取值可以是小于5的最大偶数，即N＝4。因此，可以得到导频格式0对应的NPRACH重复分段时长取值集合为：N＝{5(或4),16,24,32,40,48,56,64}。如此，可以分别确定导频格式1和导频格式2的NPRACH重复单元个数取值集合，也即图3中所述映射关系可以如表12所示：
表12 LEO-600NPRACH导频重复分段的重复单元个数表
Figure PCTCN2022120914-appb-000046
应理解，表12只作为一种示例而非限定，可能以表12的全部或部分内容作为实施，本申请实施例对此不作限定。
该实施例与图6所示的方案仅在映射关系不同，以及表10和表11中的数值结果不同，其他步骤与图6类似，此处不再赘述。
本实施例中考虑了每种导频格式在不同仰角范围的改变情况，尤其在仰角较大时分段方式更为合理。比如仰角大于50度时，其重复分段时长所包含的重复单元个数的变化率较大，按照仰角角度均分来指示重复单元个数，无法覆盖重复单元个数变化较大的仰角角度。
本申请提出又一实施例，与图6所示的实施例中的卫星轨道不同，具体为1200km。 在该实施例中，图3中所述多个映射关系可以如表13所示：
表13 LEO-1200NPRACH导频重复分段的重复单元个数表
Figure PCTCN2022120914-appb-000047
应理解，表13只作为一种示例而非限定，可能以表13的全部或部分内容作为实施，本申请实施例对此不作限定。
根据表13，可知，对于所有的导频格式，LEO-1200场景下NPRACH导频发送重复分段中可包含的最大重复单元个数N有15个不同的取值，其取值集合为：N＝{1,2,3,4,5,6,7,8,9,11,14,16,28,32,64}。
该实施例与图6所示的方案仅在卫星轨道高度不同，以及表8A中计算的数值结果不同，其他步骤与图6类似，此处不再赘述。
本申请提出又一实施例，以根据均分标准中规定的最大可持续传输时长包含的最大重复单元数的方式，确定各波束仰角对应的重复单元个数为例，在该实施例中，卫星轨道高度为1200km，图3中所述映射关系可以如表14所示：
表14 LEO-1200NPRACH导频重复分段的重复单元个数表
Figure PCTCN2022120914-appb-000048
应理解，表14只作为一种示例而非限定，可能以表12的全部或部分内容作为实施，本申请实施例对此不作限定。
根据表14，可以分别对每种导频格式配置8种NPRACH重复单元个数，并通过3比特的指示字段指示重复单元个数。具体地，对每种导频格式的NPRACH重复单元个数取值N为：
-导频格式0:预设重复单元个数取值为：N＝{5(或4),16,24,32,40,48,56,64}；
-导频格式1:预设重复单元个数取值为：N＝{5(或4),16,24,32,40,48,56,64}；
-导频格式2:预设重复单元个数取值为：N＝{1(或0),4,6,8,10,12,14,16}。
该实施例与包括表12的实施例仅在卫星轨道高度不同，以及表12中计算的数值结果不同，其他步骤与包括表12的实施例类似，此处不再赘述。
该方案考虑了每种导频格式在不同仰角范围的改变情况，尤其在仰角较大时，能够进一步提高分段方式的合理性。
一种可能的实现中，本申请各实施例中的表格中包括非整数的数值，也可以取小于其数值的最大整数。比如，以表9为例，取小于表9中的非整数的数值的最大整数，表9可以变换为表15：
表15 LEO-1200NPUSCH重复分段时长表
Figure PCTCN2022120914-appb-000049
其中，X的值对应相应的左边的角度区间，示例地，0°-10°(即小于或等于10°)的区间对应的重复分段时长为32ms；10°-60°(即大于10°且小于或等于60°)对应的重复分段时长为64ms。
可以理解的是，该整数取值的方法适用于本申请实施例中的各个表格，此处不再一一列举。
一种可能的实现中，第二通信装置向第一通信装置指示的第二映射关系可以为上述表4A和表8A中某一个波束仰角对应情况1-7的X和/或N，上述表7中某一个波束仰角或波束仰角范围对应情况1-7的X，或者上述表10中某个波束仰角对应导频格式0-2的N。示例性地，如表16所示。
表16 LEO-600第二映射关系
Figure PCTCN2022120914-appb-000050
第二通信装置可以向第一通信装置指示如表16所示的第二映射关系，该映射关系为多个第一通信装置的波束仰角均为20°时系统参数和重复分段时长的对应关系。第一通信装置可以根据自身采用的系统参数确定对应的重复分段时长。示例地，第一通信装置接收到如表16所示的第二映射关系，自身采用的系统参数为情况3，则可以确定对应的重复分段时长为16ms。
表16是表4A中第二映射关系的一例，可以理解的是，本申请各实施例均可以适用该指示第二映射关系的方法，对此不作限定。
本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
上述本申请提供的实施例中，分别从各个设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，网络设备或终端设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
本申请实施例中对模块的划分是示意性的，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。另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
以下，结合图7至图8详细说明本申请实施例提供的定位装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
与上述定位方法的构思相同，如图7所示，本申请实施例还提供一种定位装置700用于实现上述方法的功能。例如，该装置可以为软件模块或者芯片系统。本申请实施例中， 芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。该装置700可以包括：处理单元710和收发单元720。
本申请实施例中，收发单元720用于执行上文方法实施例中收发信息的步骤。
通信装置700执行上面实施例中图3至6任一所示的流程中终端设备的功能时：
收发单元720用于接收指示信息，发送信息。
处理单元710，用于根据指示信息确定重复分段时长等。
通信装置700执行上面实施例中图3至6任一所示的流程中网络设备的功能时：
收发单元720用于发送指示信息，接收信息。
处理单元710，用于根据终端设备的波束仰角确定重复分段时长等。
以上只是示例，处理单元710和收发单元720还可以执行其他功能，更详细的描述可以参考图3至6所示的方法实施例或其他方法实施例中的相关描述，这里不加赘述。
如图8所示为本申请实施例提供的一种通信装置800，图8所示的装置可以为图7所示的装置的一种硬件电路的实现方式。该定位装置可适用于前面所示出的流程图中，执行上述方法实施例中第一通信装置(或者网络设备)或者第二通信装置(或者，终端设备)的功能。为了便于说明，图8仅示出了该通信装置的主要部件。
如图8所示，通信装置800包括处理器810和接口电路820。处理器810和接口电路820之间相互耦合。可以理解的是，处理器810可以为逻辑电路，接口电路820可以为收发器或输入输出接口。可选的，移动定位装置800还可以包括存储器830，用于存储处理器810执行的指令或存储处理器810运行指令所需要的输入数据或存储处理器810运行指令后产生的数据。
当定位装置800用于实现图3至6所示的方法时，处理器810用于实现上述处理单元710的功能，接口电路820用于实现上述收发单元720的功能。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其它通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中处理器可以是随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于网络设备或终端设备中。当然，处理器和存储介质也可以作为分立组件存在于网络设备或终端设备中。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介质(包括但不限于磁盘存储器、光学存储器等)上实施的计算机程序产品的形式。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序或指令，所述计算机程序或指令被计算机(例如，处理器)执行，以实现本申请实施例中由任意装置执行的任意一种方法的部分或全部步骤。
本申请实施例还提供了一种包括计算机程序或一组指令的计算机程序产品，当所述计算机程序产品在计算机上运行时，使得以上各方面的任意一种方法的部分或者全部步骤被执行。
本申请还提供一种芯片或芯片系统，该芯片可包括处理器。该芯片还可包括存储器(或存储模块)和/或收发器(或通信模块)，或者，该芯片与存储器(或存储模块)和/或收发器(或通信模块)耦合，其中，收发器(或通信模块)可用于支持该芯片进行有线和/或无线通信，存储器(或存储模块)可用于存储程序或一组指令，该处理器调用该程序或该组指令可用于实现上述方法实施例、方法实施例的任意一种可能的实现方式中由第一通信装置(或者终端设备)或者第二通信装置(或者网络设备)执行的操作。该芯片系统可包括以上芯片，也可以包含上述芯片和其他分立器件，如存储器(或存储模块)和/或收发器(或通信模块)。
基于与上述方法实施例相同构思，本申请还提供一种通信系统，该通信系统可包括以上第一通信装置(或者终端设备)和第二通信装置(或者网络设备)。该通信系统可用于实现上述方法实施例、方法实施例的任意一种可能的实现方式中由第一通信装置(或者终端设备)或者第二通信装置(或者网络设备)执行的操作。示例性的，该通信系统可具有如图1所示结构。
本申请是参照根据本申请的方法、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器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器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。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (43)

  1. 一种通信方法，其特征在于，包括：
    第一通信装置接收指示信息，所述指示信息用于指示第一重复分段时长，所述第一重复分段时长是根据第一映射关系和所述第一通信装置当前的波束仰角确定的，所述第一映射关系包括波束仰角与重复分段时长的对应关系；
    所述第一通信装置根据所述指示信息确定所述第一重复分段时长。
  2. 根据权利要求1所述的方法，其特征在于，所述第一映射关系是从多个映射关系中确定的，所述多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括所述波束仰角与所述重复分段时长的对应关系，其中，所述第一映射关系是第一参数对应的映射关系，所述第一参数是所述第一通信装置当前使用的通信参数。
  3. 根据权利要求1或2所述的方法，其特征在于，在所述第一映射关系中，
    所述波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，
    或者，
    所述重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，在所述第一映射关系中，至少一个所述重复分段时长包括至少一个重复单元。
  5. 根据权利要求4所述的方法，其特征在于，在所述第一映射关系中，所述至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，在所述接收指示信息之前，所述方法还包括：
    所述第一通信装置发送第一信息，所述第一信息包括位置信息，所述第一位置信息用于确定所述第一通信装置当前的波束仰角。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述重复分段时长中的至少一个重复分段时长小于或等于所述至少一个重复分段时长对应的最大可连续传输时间。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一通信装置根据所述第一重复分段时长发送第一消息。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述通信参数包括消息格式和/或系统参数。
  10. 一种通信方法，其特征在于，包括：
    第二通信装置根据第一映射关系和第一波束仰角确定第一重复分段时长，所述第一映射关系包括波束仰角与重复分段时长的对应关系，所述第一重复分段时长为所述第一波束仰角对应的重复分段时长，所述第一波束仰角为第一通信装置当前的波束仰角；
    所述第二通信装置发送指示信息，所述指示信息用于指示所述第一重复分段时长。
  11. 根据权利要求10所述的方法，其特征在于，所述第一映射关系是从多个映射关系中确定的，所述多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括所述波束仰角与所述重复分段时长的对应关系，其中，所述第一映射关系是第一参 数对应的映射关系，所述第一参数是所述终端设备当前使用的通信参数。
  12. 根据权利要求10或11所述的方法，其特征在于，在所述第一映射关系中，
    所述波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，
    或者，
    所述重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。
  13. 根据权利要求10至12中任一项所述的方法，其特征在于，在所述第一映射关系中，至少一个所述重复分段时长包括至少一个重复单元。
  14. 根据权利要求13所述的方法，其特征在于，在所述第一映射关系中，所述至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
  15. 根据权利要求10至14中任一项所述的方法，其特征在于，在所述根据第一映射关系确定第一重复分段时长之前，所述方法还包括：
    所述第二通信装置获取第一信息，第一信息包括位置信息，所述位置信息用于确定所述第一通信装置当前的波束仰角。
  16. 根据权利要求10至15中任一项所述的方法，其特征在于，所述重复分段时长中的至少一个重复分段时长小于或等于所述至少一个重复分段时长对应的最大可连续传输时间。
  17. 根据权利要求10至16任一项所述的方法，其特征在于，所述方法还包括：
    所述第二通信装置根据所述第一重复分段时长接收第一消息。
  18. 根据权利要求10至17中任一项所述的方法，其特征在于，所述通信参数包括消息格式和/或系统参数。
  19. 一种通信装置，其特征在于，包括处理单元和收发单元，所述收发单元用于接收指示信息，所述指示信息用于指示第一重复分段时长，所述第一重复分段时长是根据第一映射关系和所述第一通信装置当前的波束仰角确定的，所述第一映射关系包括波束仰角与重复分段时长的对应关系；所述处理单元用于根据所述指示信息确定所述第一重复分段时长。
  20. 根据权利要求19所述的装置，其特征在于，所述第一映射关系是从多个映射关系中确定的，所述多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括所述波束仰角与所述重复分段时长的对应关系，其中，所述第一映射关系是第一参数对应的映射关系，所述第一参数是所述第一通信装置当前使用的通信参数。
  21. 根据权利要求19或20所述的装置，其特征在于，在所述第一映射关系中，
    所述波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，
    或者，
    所述重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。
  22. 根据权利要求19至21中任一项所述的装置，其特征在于，在所述第一映射关系中，至少一个所述重复分段时长包括至少一个重复单元。
  23. 根据权利要求22所述的装置，其特征在于，在所述第一映射关系中，所述至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
  24. 根据权利要求19至23中任一项所述的装置，其特征在于，在所述收发单元接收指示信息之前，所述收发单元还用于发送第一信息，所述第一信息包括位置信息，所述第 一位置信息用于确定所述第一通信装置当前的波束仰角。
  25. 根据权利要求19至24中任一项所述的装置，其特征在于，所述重复分段时长中的至少一个重复分段时长小于或等于所述至少一个重复分段时长对应的最大可连续传输时间。
  26. 根据权利要求19至25中任一项所述的装置，其特征在于，所述收发单元还用于根据所述第一重复分段时长发送第一消息。
  27. 根据权利要求19至26中任一项所述的装置，其特征在于，所述通信参数包括消息格式和/或系统参数。
  28. 一种通信装置，其特征在于，包括处理单元和收发单元，所述处理单元用于根据第一映射关系和第一波束仰角确定第一重复分段时长，所述第一映射关系包括波束仰角与重复分段时长的对应关系，所述第一重复分段时长为所述第一波束仰角对应的重复分段时长，所述第一波束仰角为第一通信装置当前的波束仰角；所述收发单元用于发送指示信息，所述指示信息用于指示所述第一重复分段时长
  29. 根据权利要求28所述的装置，其特征在于，所述第一映射关系是从多个映射关系中确定的，所述多个映射关系中的每个映射关系与至少一个通信参数对应，每个映射关系包括所述波束仰角与所述重复分段时长的对应关系，其中，所述第一映射关系是第一参数对应的映射关系，所述第一参数是所述终端设备当前使用的通信参数。
  30. 根据权利要求28或29所述的装置，其特征在于，在所述第一映射关系中，
    所述波束仰角中任意两个相邻的波束仰角的差值的绝对值相同，
    或者，
    所述重复分段时长中任意两个相邻的重复分段时长的差值的绝对值相同。
  31. 根据权利要求28至30中任一项所述的装置，其特征在于，在所述第一映射关系中，至少一个所述重复分段时长包括至少一个重复单元。
  32. 根据权利要求31所述的装置，其特征在于，在所述第一映射关系中，所述至少一个重复单元个数中任意两个相邻的重复单元个数的差值的绝对值相同。
  33. 根据权利要求28至32中任一项所述的装置，其特征在于，在所述处理单元根据第一映射关系确定第一重复分段时长之前，所述收发单元还用于获取第一信息，第一信息包括位置信息，所述位置信息用于确定所述第一通信装置当前的波束仰角。
  34. 根据权利要求28至33中任一项所述的装置，其特征在于，所述重复分段时长中的至少一个重复分段时长小于或等于所述至少一个重复分段时长对应的最大可连续传输时间。
  35. 根据权利要求28至34任一项所述的装置，其特征在于，所述收发单元用于根据所述第一重复分段时长接收第一消息。
  36. 根据权利要求28至35中任一项所述的装置，其特征在于，所述通信参数包括消息格式和/或系统参数。
  37. 一种通信系统，其特征在于，所述通信系统包括如权利要求19至27中任一项所述的通信装置，和/或，如权利要求28至36中任一项所述的通信装置。
  38. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，当所述计算机程序在计算机上运行时，使得如权利要求1至9中任一项所述的方 法被执行，或，使得如权利要求10至18中任一项所述的方法被执行。
  39. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得计算机执行如权利要求1至9中任一项所述的方法，或，如权利要求10至18中任一项所述的方法。
  40. 一种通信装置，其特征在于，包括：
    处理器，用于执行存储器中存储的计算机指令，以使得所述装置执行：如权利要求1至18中任一项所述的方法。
  41. 根据权利要求40所述的装置，其特征在于，所述装置还包括所述存储器。
  42. 根据权利要求40或41所述的装置，其特征在于，所述装置还包括通信接口，所述通信接口与所述处理器耦合，
    所述通信接口，用于输入和/或输出信息。
  43. 根据权利要求40至42中任一项所述的装置，其特征在于，所述装置为芯片。
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