WO2022205014A1 - 信息传输方法、终端设备和网络设备 - Google Patents

信息传输方法、终端设备和网络设备 Download PDF

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Publication number
WO2022205014A1
WO2022205014A1 PCT/CN2021/084164 CN2021084164W WO2022205014A1 WO 2022205014 A1 WO2022205014 A1 WO 2022205014A1 CN 2021084164 W CN2021084164 W CN 2021084164W WO 2022205014 A1 WO2022205014 A1 WO 2022205014A1
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WIPO (PCT)
Prior art keywords
information
ephemeris information
ephemeris
synchronization
satellite
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PCT/CN2021/084164
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English (en)
French (fr)
Inventor
吴作敏
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Oppo广东移动通信有限公司
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP21933694.8A priority Critical patent/EP4311320A4/en
Priority to PCT/CN2021/084164 priority patent/WO2022205014A1/zh
Priority to CN202180096253.1A priority patent/CN117083932A/zh
Publication of WO2022205014A1 publication Critical patent/WO2022205014A1/zh
Priority to US18/478,938 priority patent/US20240031965A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0035Synchronisation arrangements detecting errors in frequency or phase
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/004Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851Systems using a satellite or space-based relay
    • H04B7/18513Transmission in a satellite or space-based system
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851Systems using a satellite or space-based relay
    • H04B7/18519Operations control, administration or maintenance

Definitions

  • An embodiment of the present application provides a network device, including:
  • a sending unit configured to send synchronization auxiliary information, where the synchronization auxiliary information has a first association relationship with the first information
  • An embodiment of the present application provides a network device including a processor and a memory.
  • the memory is used for storing a computer program
  • the processor is used for calling and running the computer program stored in the memory, so that the network device executes the above-mentioned information transmission method.
  • An embodiment of the present application provides a chip for implementing the above-mentioned information transmission method.
  • Embodiments of the present application provide a computer-readable storage medium for storing a computer program, and when the computer program is run by a device, the device enables the device to execute the above-mentioned information transmission method.
  • FIG. 6 is a schematic diagram of the timing relationship (case 1) of the NTN system.
  • FIG. 7 is a schematic diagram of the timing relationship (case 2) of the NTN system.
  • FIG. 9 is a schematic diagram of a scenario in which a ground station serves a terminal device through a plurality of satellites in the NTN system.
  • FIG. 10 is a schematic flowchart of an information transmission method according to an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of an information transmission method according to another embodiment of the present application.
  • FIG. 12 is a schematic diagram of ephemeris information indication of Example 1.
  • FIG. 13 is a schematic diagram of ephemeris information indication of Example 2.
  • FIG. 14 is a schematic diagram of ephemeris information indication of Example 3.
  • FIG. 14 is a schematic diagram of ephemeris information indication of Example 3.
  • FIG. 15 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 17 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 18 is a schematic block diagram of a chip according to an embodiment of the present application.
  • FIG. 19 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • the embodiment of the present application only uses the communication system 100 for exemplary description, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (Long Term Evolution, LTE) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile communication system (Universal mobile communication system) Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication system, etc.
  • LTE Long Term Evolution
  • LTE time division duplex Time Division Duplex
  • UMTS Universal mobile communication system
  • IoT Internet of Things
  • NB-IoT Narrow Band Internet of Things
  • eMTC enhanced Machine-Type Communications
  • 5G communication system also known as New Radio (NR) communication system
  • NR New Radio
  • the network device 120 may be an access network device that communicates with the terminal device 110 .
  • An access network device may provide communication coverage for a particular geographic area, and may communicate with terminal devices 110 (eg, UEs) located within the coverage area.
  • the network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, Or a base station (gNB) in an NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolved Public Land Mobile Network (PLMN).
  • PLMN Public Land Mobile Network
  • the terminal device 110 may be any terminal device, which includes, but is not limited to, a terminal device that adopts a wired or wireless connection with the network device 120 or other terminal devices.
  • the terminal equipment 110 may refer to an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device.
  • UE user equipment
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handset, a Wireless Local Loop (WLL) station, a Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.
  • SIP Session Initiation Protocol
  • IoT device a satellite handset
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the wireless communication system 100 may further include a core network device 130 that communicates with the base station, and the core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, an Access and Mobility Management Function (Access and Mobility Management Function). , AMF), another example, authentication server function (Authentication Server Function, AUSF), another example, user plane function (User Plane Function, UPF), another example, session management function (Session Management Function, SMF).
  • the core network device 130 may also be an Evolved Packet Core (EPC) device of an LTE network, for example, a session management function + a data gateway of the core network (Session Management Function+Core Packet Gateway, SMF+ PGW-C) equipment.
  • EPC Evolved Packet Core
  • the SMF+PGW-C can simultaneously implement the functions that the SMF and the PGW-C can implement.
  • the above-mentioned core network equipment may also be called by other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in this embodiment of the present application.
  • the various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.
  • NG next generation network
  • the terminal equipment establishes an air interface connection with the access network equipment through the NR interface to transmit user plane data and control plane signaling; the terminal equipment can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); access Network equipment, such as the next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (N3 for short); the access network equipment can establish a control plane signaling with the AMF through the NG interface 2 (N2 for short).
  • gNB next generation wireless access base station
  • UPF can establish a control plane signaling connection with SMF through NG interface 4 (N4 for short); UPF can exchange user plane data with the data network through NG interface 6 (N6 for short); AMF can communicate with SMF through NG interface 11 (N11 for short)
  • the SMF establishes a control plane signaling connection; the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).
  • FIG. 1 shows, for example, one base station, one core network device and two terminal devices.
  • the wireless communication system 100 may include multiple base station devices and the coverage area of each base station may include other numbers of terminals. equipment, which is not limited in this embodiment of the present application.
  • NTN Non Terrestrial Network
  • satellite communication is not limited by the user's geographical area. For example, general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or cannot be covered due to sparse population.
  • satellite communication due to a single Satellites can cover a large ground, and satellites can orbit around the earth, so theoretically every corner of the earth can be covered by satellite communications.
  • satellite communication has great social value.
  • Satellite communications can be covered at low cost in remote mountainous areas and poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technologies, which is conducive to narrowing the digital divide with developed regions and promoting development in these areas.
  • the satellite communication distance is long, and the communication cost does not increase significantly when the communication distance increases; finally, the satellite communication has high stability and is not limited by natural disasters.
  • NTN technology can be combined with various communication systems.
  • NTN technology can be combined with NR system as NR-NTN system.
  • the NTN technology can be combined with the IoT system to form an IoT-NTN system.
  • the IoT-NTN system may include an NB-IoT-NTN system and an eMTC-NTN system.
  • FIG. 2 is a schematic structural diagram of another communication system provided by an embodiment of the present application.
  • a terminal device 1101 and a satellite 1102 are included, and wireless communication can be performed between the terminal device 1101 and the satellite 1102 .
  • the network formed between the terminal device 1101 and the satellite 1102 may also be referred to as NTN.
  • the satellite 1102 can function as a base station, and the terminal device 1101 and the satellite 1102 can communicate directly. Under the system architecture, satellite 1102 may be referred to as a network device.
  • the communication system may include multiple network devices 1102, and the coverage of each network device 1102 may include other numbers of terminal devices, which are not limited in this embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of another communication system provided by an embodiment of the present application.
  • the communication system may include multiple network devices 1203, and the coverage of each network device 1203 may include other numbers of terminal devices, which are not limited in this embodiment of the present application.
  • the network device 1203 may be the network device 120 in FIG. 1 .
  • Satellites can use multiple beams to cover the ground. For example, a satellite can form dozens or even hundreds of beams to cover the ground. In other words, a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers to ensure satellite coverage and increase the system capacity of the entire satellite communication system.
  • the altitude range of LEO can be 500km to 1500km
  • the corresponding orbital period can be about 1.5 hours to 2 hours
  • the signal propagation delay of single-hop communication between users can generally be less than 20ms
  • the maximum satellite visibility time can be 20 minutes
  • LEO The signal propagation distance is short and the link loss is small, and the transmit power requirements of the user terminal are not high.
  • the orbital height of GEO can be 35786km
  • the rotation period around the earth can be 24 hours
  • the signal propagation delay of single-hop communication between users can generally be 250ms.
  • satellites use multiple beams to cover the ground.
  • a satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. ground area.
  • FIG. 1 to FIG. 3 only illustrate systems to which the present application applies in the form of examples, and of course, the methods shown in the embodiments of the present application may also be applied to other systems.
  • system and “network” are often used interchangeably herein.
  • the term “and/or” in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases.
  • the character "/" in this document generally indicates that the related objects are an "or” relationship.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an associated relationship.
  • a indicates B it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the "correspondence” mentioned in the embodiments of the present application may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or may indicate and be indicated , configuration and configuration, etc.
  • one or more gateways may be included for communication between satellites and terminals.
  • FIG. 4 and FIG. 5 respectively show schematic diagrams of NTN scenarios based on transparent-transmitting and re-transmitting satellites.
  • the gateway and the satellite communicate through the feeder link, and the satellite and the terminal can communicate through the service link (service link).
  • the communication between the satellite and the satellite is through InterStar link
  • the communication between the gateway and the satellite is through the feeder link (Feeder link)
  • the communication between the satellite and the terminal can communicate through a service link.
  • the propagation delay of signal communication is usually less than 1 ms.
  • the propagation delay of signal communication is very large, ranging from tens of milliseconds to hundreds of milliseconds, depending on the satellite orbit height and The service type of satellite communication is related.
  • the timing relationship of the NTN system needs to be enhanced compared to the NR system.
  • the propagation delay of signal communication is usually less than 1 ms.
  • the propagation delay of signal communication is very large, ranging from tens of milliseconds to hundreds of milliseconds, depending on the satellite orbit height and The service type of satellite communication is related.
  • the timing relationship of the NTN system needs to be enhanced compared to the NR system.
  • the UE needs to consider the influence of Timing Advance (TA) when performing uplink transmission. Since the propagation delay in the system is relatively large, the range of the TA value is relatively large.
  • TA Timing Advance
  • the UE When the UE is scheduled to perform uplink transmission in time slot n (or subframe n), the UE considers the round-trip propagation delay and transmits in advance during uplink transmission, so that the uplink time slot on the network device side can be obtained when the signal reaches the network device side.
  • n or subframe n
  • the timing relationship in the NTN system may include two cases, as shown in FIG. 6 and FIG. 7 respectively.
  • Case 1 As shown in FIG. 6 , the downlink subframe and the uplink subframe on the network device side are aligned. Correspondingly, in order to align the uplink transmission of the UE with the uplink subframe on the network device side when it reaches the network device side, the UE needs to use a larger TA value. In some cases, the TA value corresponds to the timing offset value Koffset.
  • Case 2 As shown in FIG. 7 , there is an offset value between the downlink subframe and the uplink subframe on the network device side.
  • the UE's uplink transmission is to be aligned with the uplink subframe of the network device side when it reaches the network device side, the UE only needs to use a smaller TA value.
  • the TA value corresponds to the timing offset value Koffset.
  • the round-trip transmission time RTT of the UE corresponds to the timing offset value Koffset.
  • the network equipment needs to send synchronization assistance information such as satellite ephemeris information, reference point location, common timing offset value (such as the timing offset value between the network equipment and the reference point and/or At least one item of information such as a timing offset value between the network device and the satellite), a timestamp (timestamp), etc., is used for the terminal device to complete the time domain and/or frequency domain synchronization.
  • the terminal device needs to obtain the synchronization assistance information sent by the network device, and at the same time complete the corresponding time domain and/or frequency domain synchronization according to its own Global Navigation Satellite System (Global Navigation Satellite System, GNSS) capability.
  • Global Navigation Satellite System Global Navigation Satellite System
  • the satellite ephemeris information includes the position and velocity state (Position and Velocity State, PVS) vector information of the satellite.
  • the terminal device obtains the PVS vector information of the satellite according to the ephemeris information format sent by the network device. Since the PVS vector information is associated with time information, in some cases, the PVS vector information can also be regarded as a Position Velocity Time (PVT) parameter.
  • PVS Position Velocity Time
  • the format of the ephemeris information sent by the network device may include the following two ways:
  • Mode 1 Ephemeris information format based on orbit information.
  • the network device broadcasts ephemeris parameters ( ⁇ (km), e, I(deg), ⁇ (deg), ⁇ (deg), M(deg)) at time t0, see FIG. 8 .
  • represents the major radius (Semi-major, the unit can be meters)
  • e represents the eccentricity (Eccentricity)
  • represents the periapsis (Argument of periapsis, the unit can be rad (radian angle))
  • represents the longitude of the ascending node (Longitude of ascending node, the unit can be rad)
  • i is the inclination (Inclination, the unit can be rad)
  • M is the mean anomaly at epoch time t0 (Mean anomaly M at epoch time t0, the unit can be rad) .
  • the terminal device can obtain the Earth-Centered (Earth-Fixed, ECEF) coordinate system (also referred to as the Earth-centered coordinate system) of the satellite at time t0.
  • the terminal device can obtain the PVS vector based on the geocentric coordinate system of the satellite at time t.
  • the terminal device obtains the ephemeris parameter of the satellite at time t according to the received ephemeris parameter of the satellite at time t0. Then, according to the ephemeris parameter of the satellite at time t, the terminal device can obtain the PVS vector of the satellite based on the geocentric coordinate system at time t.
  • the PVS vector based on the geocentric coordinate system includes (S X , S Y , S Z , V X , V Y , V Z ).
  • (S X , S Y , S Z ) corresponds to the satellite position
  • (V X , V Y , V Z ) corresponds to the satellite velocity.
  • the format of the ephemeris information notified by the network device is as follows:
  • the PVS vector obtained by the terminal device is as follows:
  • Mode 2 The ephemeris information format based on the instantaneous state vector, such as the PVS vector of the satellite at a specific moment, or the ephemeris information format based on the PVT.
  • the network device broadcasts the PVS vector (S X , S Y , S Z , V X , V Y , V Z ) of the satellite based on the geocentric coordinate system at time t0 to the terminal device.
  • the terminal device obtains the PVS vector of the satellite based on the geocentric coordinate system at time t according to the PVS vector based on the geocentric coordinate system of the satellite at time t0.
  • the information at time t0 can be obtained implicitly through the downlink time unit that receives the ephemeris information.
  • the notification method of method 1 has a lower overhead than that of method 2.
  • the terminal device needs to model and estimate the PVS vector of the satellite, so the accuracy is worse than that in mode 2.
  • network equipment needs to send synchronization assistance information such as ephemeris information (satellite moving speed and/or satellite position), reference point position, common timing offset value (such as timing between network equipment and reference point) to terminal equipment At least one item of the offset value and/or the timing offset value between the network device and the satellite), the timestamp (timestamp), etc., is used for the terminal device to complete the time domain and/or frequency domain synchronization.
  • the terminal device needs to obtain the synchronization assistance information sent by the network device, and at the same time complete the corresponding time domain and/or frequency domain synchronization according to its own GNSS capability.
  • the terminal device shall obtain at least one of the following information based on its GNSS capabilities: the terminal device's location, time reference, and frequency reference. And, based on the above information, and the synchronization assistance information (such as serving satellite ephemeris information or time stamp) indicated by the network device, the terminal device can calculate the timing and frequency offset, and apply timing advance compensation in the idle state or inactive state or connected state or frequency offset adjustment.
  • the terminal device based on its GNSS capabilities: the terminal device's location, time reference, and frequency reference.
  • the terminal device can calculate the timing and frequency offset, and apply timing advance compensation in the idle state or inactive state or connected state or frequency offset adjustment.
  • the terminal device performs the estimation of the UE-specific TA according to the following methods:
  • Mode 1 The terminal device estimates the UE-specific TA based on the position obtained by GNSS and the serving satellite ephemeris information indicated by the network device;
  • Mode 2 The terminal device estimates the UE-specific TA based on the reference time obtained by the GNSS and the reference time indicated by the network device, such as a time stamp.
  • the terminal equipment in the idle state or inactive state can calculate the TA value according to the following methods, and transmit Msg1 or MsgA according to the determined TA:
  • T TA (N TA,UE-specific +N TA,offset +N TA,common )*T c
  • the TA value can be calculated according to the following formula, and the uplink channel or signal transmission can be performed according to the determined TA:
  • T TA (N TA +N TA,UE-specific +N TA,offset +N TA,common )*T c
  • N TA, UE-specific can be the TA value estimated by the terminal equipment itself, N TA, offset and related protocols are the same, for example, it is determined according to the coexistence of the network frequency band and LTE or NR, N TA, common includes network equipment broadcast
  • the common timing offset value of N TA can be the TA value indicated by the network device.
  • the terminal device needs to jointly estimate and update the TA according to the TA value estimated by the terminal device, the public timing offset value broadcast by the network device, and the TA value indicated by the network device.
  • a network device on the ground such as a ground station, may perform signal relay through multiple serving satellites to serve multiple terrestrial cells on the ground, as shown in FIG. 9 .
  • the network device it is necessary to consider how the network device notifies the ephemeris information to better assist the terminal device to complete time-frequency synchronization.
  • FIG. 10 is a schematic flowchart of an information transmission method 200 according to an embodiment of the present application.
  • the method may be applied to the systems shown in FIGS. 1 to 9 in some embodiments, but is not limited thereto.
  • the method includes at least some of the following.
  • the terminal device receives synchronization assistance information, where the synchronization assistance information has a first association relationship with the first information.
  • the terminal device acquires synchronization according to the synchronization assistance information.
  • the terminal device may receive synchronization assistance information from the network device, and obtain time synchronization and/or frequency synchronization according to the synchronization assistance information.
  • a network device on the ground such as a ground station, performs signal relay through multiple serving satellites to serve multiple terrestrial cells on the ground. Therefore, the network device needs to broadcast the ephemeris information associated with one or more satellites to the terminal device. For example, in the scenario shown in Figure 9, in the first time period, satellite 1 serves ground cell 1; but in the second time period, with the departure of satellite 1 and the arrival of satellite 2, it may become a satellite 2 serves the ground cell 1.
  • the terminal device needs to know that the pre-estimation of time-frequency synchronization should be performed according to the ephemeris information of satellite 1 provided by the network device in the first time period, and the pre-estimation of time-frequency synchronization should be performed according to the ephemeris information of satellite 2 provided by the network device in the second time period.
  • the time-frequency synchronization pre-estimation is performed by using the calendar information.
  • the first information includes at least one of the following:
  • Time information ephemeris information format, group ID, reference signal index, cell ID, antenna polarization mode, satellite ID, serving satellite, serving duration of serving satellite, satellite that will provide service, time when the satellite that will provide service will start service , the service time of the satellite that will provide service, the satellite that will not provide service, and the moment when the satellite that will not provide service will stop serving.
  • the reference signal index includes SSB (Synchronization Signal and PBCH block, synchronization signal and PBCH (Physical Broadcast CHannel, broadcast physical channel) block) index and/or CSI-RS (Channel State Information-Reference Signal, channel) Status Information Reference Signal) index.
  • SSB Synchronization Signal and PBCH block
  • PBCH Physical Broadcast CHannel, broadcast physical channel
  • CSI-RS Channel State Information-Reference Signal, channel) Status Information Reference Signal
  • the first association relationship includes the association relationship between the synchronization assistance information and the time information.
  • the first association relationship includes the association relationship between the synchronization assistance information and the ephemeris information format.
  • the first association relationship includes the association relationship between the synchronization assistance information and the group identifier.
  • the first association relationship includes the association relationship between the synchronization assistance information and the SSB index or the CSI-RS index.
  • the first association relationship includes the association relationship between the synchronization assistance information and the cell identity.
  • the first association relationship includes the association relationship between the synchronization assistance information and the antenna polarization mode.
  • the first association relationship includes the association relationship between the synchronization assistance information and the satellite identifier.
  • the first association relationship includes the association relationship between the synchronization assistance information and the serving satellite.
  • the first association relationship includes an association relationship between the synchronization assistance information and the service duration of the serving satellite.
  • the synchronization assistance information is used to determine at least one of the following:
  • Ephemeris information common Timing Advance (TA) value, common TA value change information, common frequency offset value, common frequency offset value change information, terminal equipment location information, reference point information.
  • TA Timing Advance
  • the ephemeris information is used to determine satellite position information and/or satellite velocity information.
  • ephemeris information is used to indicate satellite position information and/or satellite velocity information.
  • the ephemeris information format may be based on the PVT's ephemeris information format.
  • the ephemeris information is used to indicate the ephemeris parameters ( ⁇ (km), e, I(deg), ⁇ (deg), ⁇ (deg), M(deg)) of the satellite.
  • the terminal device determines the position information of the satellite and/or the speed information of the satellite according to the ephemeris parameter of the satellite.
  • the ephemeris information format may be an orbit information-based ephemeris information format.
  • the synchronization assistance information is carried by at least one of system messages, handover commands, radio resource control (RRC) signaling, medium access control control elements (MAC CE), and downlink control information (DCI).
  • RRC radio resource control
  • MAC CE medium access control control elements
  • DCI downlink control information
  • system messages include non-terrestrial network (Non-Terrestrial Network, NTN) dedicated system messages.
  • NTN non-Terrestrial Network
  • receiving the synchronization assistance information by the terminal device includes: the terminal device receives the synchronization assistance information according to at least one of a system message, a handover command, RRC, MAC CE and DCI sent by the network device.
  • the terminal device receives an NTN-SIB message sent by the network device, where the NTN-SIB message includes at least one set of ephemeris information corresponding to the network device.
  • an NTN-SIB message only includes indication information of a group of ephemeris information.
  • an NTN-SIB message includes indication information of multiple sets of ephemeris information.
  • the terminal device receives one or more sets of ephemeris information according to a handover command sent by the network device.
  • the synchronization assistance information includes at least one group of ephemeris information, and a first group of ephemeris information in the at least one group of ephemeris information includes at least one first group of ephemeris information, the first group of ephemeris information is related to The first information has the first association relationship.
  • the terminal device may receive at least one group of ephemeris information sent by the network device, and obtain time synchronization and/or frequency synchronization according to the first group of ephemeris information in the at least one group of ephemeris information.
  • the synchronization assistance information includes at least one first ephemeris information, and the at least one first ephemeris information has the first association relationship with the first information.
  • the first association relationship is obtained through at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI.
  • the first association relationship is obtained according to a predefined rule.
  • the first ephemeris information group includes a plurality of first ephemeris information, and each first ephemeris information in the plurality of first ephemeris information is used to determine a position velocity time (Position) of the satellite. Velocity and Time, PVT) parameters.
  • the terminal device acquires the first association relationship through predefined or indication information sent by the network device. For example, the terminal device acquires the first association relationship according to at least one of a system message, a handover command, RRC, MAC CE, and DCI sent by the network device.
  • the first association relationship includes an association relationship between the first ephemeris information group and the serving satellite, or the first ephemeris information group includes ephemeris information of the serving satellite of the terminal device.
  • the first ephemeris information group is the ephemeris information of the serving satellite of the terminal device
  • the terminal device determines the serving satellite according to the position information obtained by GNSS, and obtains the first time synchronization and/or the first frequency according to the first ephemeris information group Synchronize.
  • the first association relationship includes an association relationship between the first ephemeris information group and the satellite that will provide service, or the first ephemeris information group includes ephemeris information of the satellite that will serve the terminal device.
  • the first ephemeris information is the ephemeris information of the satellite that will serve the terminal device
  • the terminal device determines the next satellite serving the terminal device according to the position information obtained by GNSS, and obtains the first satellite according to the first ephemeris information group.
  • Time synchronization and/or first frequency synchronization are examples of time synchronization and/or first frequency synchronization.
  • the first association relationship includes an association relationship between the first ephemeris information group and a first reference signal index, such as a first SSB index, or the first ephemeris information group is a beam direction associated with the first reference signal index corresponding ephemeris information.
  • the first ephemeris information group is associated with the first SSB index
  • the terminal device acquires the first time synchronization and/or the first frequency synchronization corresponding to the first SSB index according to the first ephemeris information group.
  • the corresponding times are monotonically increasing or monotonically decreasing.
  • a plurality of times corresponding to a plurality of first ephemeris information arranged in sequence may be moments.
  • t1, t2, t3, t4, t5 are monotonically increasing.
  • the first ephemeris information group includes five pieces of first ephemeris information, the five pieces of first ephemeris information correspond to the t1, t2, t3, t4, and t5, and the five pieces of first ephemeris information are in chronological order t1, t2, t3, t4, t5 are arranged.
  • the five pieces of first ephemeris information may also be arranged in time sequence t5, t4, t3, t2, and t1.
  • the time corresponding to at least one first ephemeris information in the first ephemeris information group is determined according to the downlink time unit in which the network device sends the synchronization assistance information.
  • the downlink time unit may be a slot, a subframe or a symbol.
  • the time corresponding to at least one first ephemeris information in the plurality of first ephemeris information is determined according to the starting position of the downlink time unit in which the network device sends the ephemeris information.
  • the time corresponding to the first or the last first ephemeris information in the plurality of first ephemeris information is determined according to the starting position of the downlink time unit in which the network device sends the ephemeris information.
  • the first ephemeris information group includes a plurality of first ephemeris information, and the plurality of first ephemeris information corresponds to a plurality of different times.
  • the first ephemeris information included in the first ephemeris information group is shown in the following table.
  • Ephemeris information 1_n time first ephemeris information t0 Ephemeris information 1_0 t1 Ephemeris information 1_1 t2 Ephemeris information 1_2 ... ... tn Ephemeris information 1_n
  • the terminal device can obtain ephemeris information at any time from t0 to tn according to Table 1. For example, if the terminal device wants to obtain the ephemeris information at time t, where t is a time between t1 and t2, the terminal device can obtain the ephemeris information according to the ephemeris information 1-1 and the ephemeris information 1-2, for example, by interpolation. Ephemeris information at time t.
  • the time interval between two adjacent time instants corresponding to two adjacent first ephemeris information in the plurality of first ephemeris information is predefined or configured by a network device.
  • the at least one set of ephemeris information includes a second set of ephemeris information
  • the second set of ephemeris information includes at least one second set of ephemeris information
  • the second set of ephemeris information and the first information have The second relationship.
  • a first set of ephemeris information is associated with a serving satellite
  • a second set of ephemeris information is associated with a satellite that is about to provide service.
  • the first ephemeris information group is associated with the first reference signal index
  • the second ephemeris information group is associated with the second reference signal index
  • the first group of ephemeris information is associated with the first group of identifiers
  • the second group of ephemeris information is associated with the second group of identifiers.
  • the first ephemeris information group is associated with the first cell identifier
  • the second ephemeris information group is associated with the second cell identifier
  • the synchronization assistance information includes at least one second ephemeris information, and the at least one second ephemeris information has the second association relationship with the first information.
  • the second association relationship uses system messages, handover commands, radio resource control (Radio Resource Control, RRC) signaling, medium access control (Medium Access Control, MAC) control elements (Control Element, CE) and at least one of Downlink Control Information (Downlink Control Information, DCI) is acquired.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • DCI Downlink Control Information
  • the second association relationship is obtained according to a predefined rule.
  • the first association relationship and the second association relationship are the same association relationship.
  • the first association relationship includes the association relationship between the first ephemeris information and the group ID
  • the second association relationship also includes the association relationship between the second ephemeris information and the group ID.
  • the first ephemeris information is associated with a first group of identifiers
  • the second ephemeris information is associated with a second group of identifiers.
  • At least part of the ephemeris information in the first set of ephemeris information and the second set of ephemeris information correspond to the same time instant.
  • the end time of the first set of ephemeris information and the start time of the second set of ephemeris information overlap.
  • the first ephemeris information group corresponds to the first time period
  • the second ephemeris information group corresponds to the second time period
  • the end time of the first time period and the start time of the second time period overlap.
  • the at least one first ephemeris information included in the first ephemeris information group and the at least one second ephemeris information included in the second ephemeris information group correspond to the same moment.
  • the first ephemeris information group includes five pieces of first ephemeris information, which correspond to times t1, t2, t3, t4, and t5, respectively.
  • the second ephemeris information group includes three pieces of second ephemeris information, respectively corresponding to times t4, t5, and t6.
  • the first ephemeris information included in the first ephemeris information group and the second ephemeris information included in the second ephemeris information group correspond to different moments.
  • the first ephemeris information corresponds to the first time period
  • the second ephemeris information corresponds to the second time period
  • the first time period and the second time period do not overlap.
  • the first ephemeris information group includes five pieces of first ephemeris information, which correspond to times t1, t2, t3, t4, and t5, respectively.
  • the second ephemeris information group includes three pieces of second ephemeris information, respectively corresponding to time t6, t7, and t8.
  • all ephemeris information in at least one set of ephemeris information corresponds to the same ephemeris information format.
  • the first ephemeris information corresponds to a first ephemeris information format
  • the second ephemeris information corresponds to a second ephemeris information format
  • the first ephemeris information corresponds to the ephemeris information of the serving satellite
  • the second ephemeris information corresponds to the ephemeris information of the satellite that will provide the service.
  • the first ephemeris information corresponds to the format of the first ephemeris information, so as to ensure the accuracy of the time-frequency synchronization corresponding to the serving satellite.
  • the second ephemeris information corresponds to the second ephemeris information format, and is used to estimate possible time-frequency synchronization.
  • the first ephemeris information corresponds to the ephemeris information of the satellite that will not provide service
  • the second ephemeris information corresponds to the ephemeris information of the serving satellite
  • the first ephemeris information corresponds to the second ephemeris information format
  • the second ephemeris information corresponds to the ephemeris information of the serving satellite.
  • the first ephemeris information format corresponds to the first ephemeris information format.
  • the first ephemeris information corresponds to the ephemeris information of the satellite that will not provide service
  • the second ephemeris information corresponds to the ephemeris information of the satellite that will provide service
  • the first ephemeris information corresponds to the second ephemeris information format
  • the second The ephemeris information corresponds to the first ephemeris information format.
  • the first ephemeris information and the second ephemeris information correspond to the same ephemeris information format.
  • the first ephemeris information included in the first ephemeris information group and the second ephemeris information included in the second ephemeris information group correspond to the same moment.
  • the first ephemeris information and the second ephemeris information are shown in the following table.
  • Ephemeris information 2_n Ephemeris information 2_n
  • the first ephemeris information corresponds to the ephemeris information of the currently serving satellite, eg, the first satellite
  • the second ephemeris information corresponds to the ephemeris information of the next satellite serving the ground cell, eg, the second satellite. If the terminal device determines that the first satellite provides services at time t, the terminal device can obtain ephemeris information at time t according to the first ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization.
  • the terminal device may obtain ephemeris information at time t according to the second ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization.
  • the first ephemeris information corresponds to the first SSB index (or the first satellite beam or the first antenna polarization mode)
  • the second ephemeris information corresponds to the second SSB index (or the second satellite beam or the second antenna polarization) model). If the terminal device performs wireless communication with the network device according to the first SSB index, the terminal device can obtain ephemeris information at time t according to the first ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization.
  • the terminal device can obtain ephemeris information at time t according to the second ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization.
  • the at least one first ephemeris information included in the first ephemeris information group and the at least one second ephemeris information included in the second ephemeris information group correspond to different moments.
  • the first ephemeris information and the second ephemeris information included in the ephemeris information are shown in the following table. where NA represents an invalid value.
  • the terminal device can determine that the first ephemeris information is associated before time tn, and the second ephemeris information is associated after time tn. If the terminal device determines that time t is a certain time from t0 to tn, the terminal device can obtain ephemeris information at time t according to the first ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization. If the terminal device determines that time t is a certain time from tn to tn+m, the terminal device can obtain ephemeris information at time t according to the second ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization.
  • the first ephemeris information corresponds to the ephemeris information of the currently serving satellite, eg, the first satellite
  • the second ephemeris information corresponds to the ephemeris information of the next satellite serving the ground cell, eg, the second satellite.
  • the first ephemeris information corresponds to the ephemeris information of the satellite associated with the first cell identifier
  • the second ephemeris information corresponds to the ephemeris information of the satellite associated with the second cell identifier
  • the first ephemeris information is associated with the first SSB index (or the first satellite beam or the first antenna polarization mode), and the second ephemeris information is associated with the second SSB index (or the second satellite beam or the second antenna polarization) model).
  • the first ephemeris information included in the first ephemeris information group and the second ephemeris information included in the second ephemeris information group correspond to different moments.
  • the indication of ephemeris information is as shown in the following table.
  • the terminal device can determine that the ephemeris information from time t0 to time tn belongs to the same group, corresponding to the first ephemeris information.
  • the ephemeris information from time tk to tk+m belongs to the same group and corresponds to the second ephemeris information.
  • the terminal device can determine according to Table 4 that the ephemeris information from time t0 to tn is associated with the first ephemeris information, and the ephemeris information from time tk to tk+m is associated with the second ephemeris information.
  • the terminal device can obtain ephemeris information at time t according to the first ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization. If the terminal device determines that time t is a certain time from tk to tk+m, the terminal device can obtain ephemeris information at time t according to the second ephemeris information, thereby obtaining corresponding time domain synchronization and/or frequency synchronization.
  • the first ephemeris information corresponds to the ephemeris information of the satellite associated with the first cell identifier
  • the second ephemeris information corresponds to the ephemeris information of the satellite associated with the second cell identifier
  • the first ephemeris information is associated with the first SSB index (or the first satellite beam or the first antenna polarization mode), and the second ephemeris information is associated with the second SSB index (or the second satellite beam or the second antenna polarization) model).
  • the terminal device acquires synchronization according to the synchronization assistance information, including:
  • the terminal device acquires at least one of the following according to the synchronization assistance information: downlink time synchronization, downlink frequency synchronization, uplink time synchronization and uplink frequency synchronization.
  • the terminal device acquires synchronization according to the synchronization assistance information, including:
  • the terminal device acquires the first synchronization according to the first ephemeris information group; and/or,
  • the terminal device acquires the second synchronization according to the second ephemeris information group.
  • the first synchronization may include a first time synchronization and/or a first frequency synchronization.
  • the second synchronization may include a second time synchronization and/or a second frequency synchronization.
  • time synchronization may also be called time domain synchronization.
  • the terminal device may receive the first ephemeris information group and/or the second ephemeris information group sent by the network device, obtain the first time synchronization and/or the first frequency synchronization according to the first ephemeris information group, and/or, according to the Two sets of ephemeris information acquire second time synchronization and/or second frequency synchronization.
  • the terminal device may receive synchronization assistance information, such as one or more sets of ephemeris information, from the network device.
  • each group of ephemeris information may include one or more ephemeris information.
  • the terminal device can perform time-frequency synchronization using the corresponding synchronization assistance information in the current time period, such as ephemeris information.
  • the terminal device can also perform time-frequency synchronization in advance according to the corresponding synchronization auxiliary information, such as ephemeris information, in the subsequent time period, so as to ensure normal communication between the terminal device and the network device.
  • FIG. 11 is a schematic flowchart of an information transmission method 300 according to another embodiment of the present application.
  • the method can be applied to the systems shown in FIGS. 1 to 9 , but is not limited thereto.
  • the method includes at least some of the following.
  • the network device sends synchronization assistance information, where the synchronization assistance information has a first association relationship with the first information.
  • the synchronization assistance information is used to enable the terminal device to acquire synchronization.
  • the first information includes at least one of the following:
  • Time information ephemeris information format, group ID, reference signal index, cell ID, antenna polarization mode, satellite ID, serving satellite, serving duration of serving satellite, satellite that will provide service, time when the satellite that will provide service will start service , the service time of the satellite that will provide service, the satellite that will not provide service, and the moment when the satellite that will not provide service will stop serving.
  • the synchronization assistance information is used to determine at least one of the following:
  • Ephemeris information common timing advance TA value, common TA value change information, common frequency offset value, common frequency offset value change information, terminal equipment location information, reference point information; wherein, the ephemeris information is used to determine the location information of the satellite and/or satellite speed information.
  • the synchronization assistance information includes at least one group of ephemeris information, and a first group of ephemeris information in the at least one group of ephemeris information includes at least one first group of ephemeris information, the first group of ephemeris information is related to The first information has the first association relationship.
  • the first set of ephemeris information includes a plurality of first ephemeris information, each first ephemeris information in the plurality of first ephemeris information is used to determine a position velocity time (PVT) of the satellite )parameter.
  • PVT position velocity time
  • the corresponding times are monotonically increasing or monotonically decreasing.
  • the time corresponding to at least one first ephemeris information in the first ephemeris information group is determined according to the downlink time unit in which the network device sends the synchronization assistance information.
  • the at least one set of ephemeris information includes a second set of ephemeris information
  • the second set of ephemeris information includes at least one second set of ephemeris information
  • the second set of ephemeris information and the first information have The second relationship.
  • the second association relationship is obtained through at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI;
  • the second association relationship is obtained according to a predefined rule.
  • the at least one first ephemeris information included in the first ephemeris information group and the at least one second ephemeris information included in the second ephemeris information group correspond to the same time instant.
  • the first ephemeris information included in the first ephemeris information group and the second ephemeris information included in the second ephemeris information group correspond to different moments.
  • the first ephemeris information corresponds to a first ephemeris information format
  • the second ephemeris information corresponds to a second ephemeris information format
  • the first ephemeris information and the second ephemeris information correspond to the same ephemeris information format.
  • the first ephemeris information group is used to instruct the terminal device to acquire the first synchronization; and/or the second ephemeris information group is used to instruct the terminal device to acquire the second synchronization.
  • the synchronization assistance information is carried by at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI.
  • the first association relationship is obtained through at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI;
  • the first association relationship is obtained according to a predefined rule.
  • the system messages include non-terrestrial network NTN-specific system messages.
  • the synchronization assistance information is used to instruct the terminal device to acquire at least one of the following: downlink time synchronization, downlink frequency synchronization, uplink time synchronization, and uplink frequency synchronization.
  • ephemeris information is represented by PVT vectors.
  • satellite A and satellite B may also be the same satellite, which is not limited in this application.
  • the terminal device receives a plurality of ephemeris information sent by the network device.
  • the terminal device receives a set of ephemeris information PVT1 to PVT4 sent by the network device through the NTN-SIB before time T1.
  • PVT1 to PVT4 correspond to the ephemeris information of satellite A at times T1 to T4.
  • the terminal device receives another group of ephemeris information PVT5-PVT8 sent by the network device through the NTN-SIB between time T3 and time T4.
  • PVT5 ⁇ PVT8 correspond to the ephemeris information of satellite B at times T4 ⁇ T7.
  • Both satellite A and satellite B correspond to the same cell such as CELL1.
  • time T4 corresponds to two ephemeris information
  • the terminal device can determine that time T4 is a turning point. That is, PVT1 to PVT4 correspond to the former group of ephemeris information, and PVT5 to PVT8 correspond to the latter group of ephemeris information.
  • satellite A and satellite B may also be the same satellite, which is not limited in this application.
  • PVT4 and PVT5 may also be the same ephemeris information, which is not limited in this application.
  • the terminal device receives a plurality of ephemeris information (or two sets of ephemeris information) sent by the network device.
  • the terminal device receives two sets of ephemeris information PVT1-PVT4 and PVT5-PVT8 sent by the network device through the NTN-SIB.
  • PVT1-PVT4 and PVT5-PVT8 correspond to the ephemeris information of beam A and beam B at times T1-T4, respectively. Both beam A and beam B correspond to the same cell such as CELL1.
  • the terminal device In cell 1, if the terminal device has a BWP switch at time t between T2 and T3, the active BWP of the terminal device is switched from BWP A to BWP B, where BWP A is associated with beam A, and BWP B is associated with beam B , the terminal device needs to re-acquire synchronization according to the ephemeris information corresponding to beam B.
  • the network device can notify the terminal device of one or more sets of ephemeris information.
  • each group of ephemeris information includes one or more ephemeris information.
  • the terminal device can use the corresponding ephemeris information in the current time period to perform time-frequency synchronization.
  • the terminal device can also perform time-frequency synchronization in advance according to the corresponding ephemeris information in the subsequent time period, so as to ensure normal communication between the terminal device and the network device.
  • FIG. 15 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 may include:
  • a receiving unit 410 configured to receive synchronization auxiliary information, where the synchronization auxiliary information has a first association relationship with the first information
  • the synchronization unit 420 is configured to acquire synchronization according to the synchronization assistance information.
  • the first information includes at least one of the following:
  • Time information ephemeris information format, group ID, reference signal index, cell ID, antenna polarization mode, satellite ID, serving satellite, serving duration of serving satellite, satellite that will provide service, time when the satellite that will provide service will start service , the service time of the satellite that will provide service, the satellite that will not provide service, and the moment when the satellite that will not provide service will stop serving.
  • the synchronization assistance information is used to determine at least one of the following:
  • Ephemeris information common timing advance TA value, common TA value change information, common frequency offset value, common frequency offset value change information, terminal equipment location information, reference point information; wherein, the ephemeris information is used to determine the location information of the satellite and/or satellite speed information.
  • the synchronization assistance information includes at least one group of ephemeris information, and a first group of ephemeris information in the at least one group of ephemeris information includes at least one first group of ephemeris information, the first group of ephemeris information is related to The first information has the first association relationship.
  • the first ephemeris information group includes a plurality of first ephemeris information, and each first ephemeris information in the plurality of first ephemeris information is used to determine a position velocity time PVT parameter of the satellite .
  • the corresponding times are monotonically increasing or monotonically decreasing.
  • the time corresponding to at least one first ephemeris information in the first ephemeris information group is determined according to the downlink time unit in which the network device sends the synchronization assistance information.
  • the at least one set of ephemeris information includes a second set of ephemeris information
  • the second set of ephemeris information includes at least one second set of ephemeris information
  • the second set of ephemeris information and the first information have The second relationship.
  • the second association relationship is obtained through at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI;
  • the second association relationship is obtained according to a predefined rule.
  • the at least one first ephemeris information included in the first ephemeris information group and the at least one second ephemeris information included in the second ephemeris information group correspond to the same time instant.
  • the first ephemeris information included in the first ephemeris information group and the second ephemeris information included in the second ephemeris information group correspond to different moments.
  • the first ephemeris information corresponds to a first ephemeris information format
  • the second ephemeris information corresponds to a second ephemeris information format
  • the first ephemeris information and the second ephemeris information correspond to the same ephemeris information format.
  • the synchronization unit is specifically used for:
  • the second synchronization is obtained according to the second set of ephemeris information.
  • the synchronization assistance information is carried by at least one of system messages, handover commands, radio resource control RRC signaling, medium access control control unit MAC CE and downlink control information DCI.
  • the first association relationship is obtained through at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI;
  • the first association relationship is obtained according to a predefined rule.
  • the system messages include non-terrestrial network NTN-specific system messages.
  • the terminal device acquires synchronization according to the synchronization assistance information, including:
  • the terminal device acquires at least one of the following according to the synchronization assistance information: downlink time synchronization, downlink frequency synchronization, uplink time synchronization and uplink frequency synchronization.
  • the terminal device 400 in this embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiments.
  • each module (submodule, unit, or component, etc.) in the terminal device 400 reference may be made to the corresponding descriptions in the foregoing method embodiments, which are not repeated here.
  • the functions described by each module (submodule, unit, or component, etc.) in the terminal device 400 of the application embodiment may be implemented by different modules (submodule, unit, or component, etc.), or may be implemented by the same module Module (submodule, unit or component, etc.) implementation.
  • FIG. 16 is a schematic block diagram of a network device 500 according to an embodiment of the present application.
  • the network device 500 may include:
  • a sending unit 510 configured to send synchronization auxiliary information, where the synchronization auxiliary information has a first association relationship with the first information
  • the synchronization assistance information is used to enable the terminal device to acquire synchronization.
  • the first information includes at least one of the following:
  • Time information ephemeris information format, group ID, reference signal index, cell ID, antenna polarization mode, satellite ID, serving satellite, serving duration of serving satellite, satellite that will provide service, time when the satellite that will provide service will start service , the service time of the satellite that will provide service, the satellite that will not provide service, and the moment when the satellite that will not provide service will stop serving.
  • the synchronization assistance information is used to determine at least one of the following:
  • Ephemeris information common timing advance TA value, common TA value change information, common frequency offset value, common frequency offset value change information, terminal equipment location information, reference point information; wherein, the ephemeris information is used to determine the location information of the satellite and/or satellite speed information.
  • the synchronization assistance information includes at least one group of ephemeris information, and a first group of ephemeris information in the at least one group of ephemeris information includes at least one first group of ephemeris information, the first group of ephemeris information is related to The first information has the first association relationship.
  • the first ephemeris information group includes a plurality of first ephemeris information, and each first ephemeris information in the plurality of first ephemeris information is used to determine a position velocity time PVT parameter of the satellite .
  • the corresponding times are monotonically increasing or monotonically decreasing.
  • the time corresponding to at least one first ephemeris information in the first ephemeris information group is determined according to the downlink time unit in which the network device sends the synchronization assistance information.
  • the at least one set of ephemeris information includes a second set of ephemeris information
  • the second set of ephemeris information includes at least one second set of ephemeris information
  • the second set of ephemeris information and the first information have The second relationship.
  • the second association relationship is obtained through at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI;
  • the second association relationship is obtained according to a predefined rule.
  • the at least one first ephemeris information included in the first ephemeris information group and the at least one second ephemeris information included in the second ephemeris information group correspond to the same time instant.
  • the first ephemeris information included in the first ephemeris information group and the second ephemeris information included in the second ephemeris information group correspond to different moments.
  • the first ephemeris information corresponds to a first ephemeris information format
  • the second ephemeris information corresponds to a second ephemeris information format
  • the first ephemeris information and the second ephemeris information correspond to the same ephemeris information format.
  • the first ephemeris information group is used to instruct the terminal device to acquire the first synchronization; and/or the second ephemeris information group is used to instruct the terminal device to acquire the second synchronization.
  • the synchronization assistance information is carried by at least one of system messages, handover commands, radio resource control RRC signaling, medium access control control unit MAC CE and downlink control information DCI.
  • the first association relationship is obtained through at least one of system messages, handover commands, RRC signaling, MAC CE, and DCI;
  • the first association relationship is obtained according to a predefined rule.
  • the system messages include non-terrestrial network NTN-specific system messages.
  • the synchronization assistance information is used to instruct the terminal device to acquire at least one of the following: downlink time synchronization, downlink frequency synchronization, uplink time synchronization, and uplink frequency synchronization.
  • the network device 500 in this embodiment of the present application can implement the corresponding functions of the network device in the foregoing method embodiments.
  • each module (submodule, unit, or component, etc.) in the network device 500 reference may be made to the corresponding descriptions in the foregoing method embodiments, which will not be repeated here.
  • the functions described by each module (submodule, unit, or component, etc.) in the network device 500 of the application embodiment may be implemented by different modules (submodule, unit, or component, etc.), or may be implemented by the same module Module (submodule, unit or component, etc.) implementation.
  • FIG. 17 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so that the communication device 600 implements the methods in the embodiments of the present application.
  • communication device 600 may also include memory 620 .
  • the processor 610 may call and run a computer program from the memory 620, so that the communication device 600 implements the methods in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information sent by other devices or data.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of the antennas may be one or more.
  • the communication device 600 may be the network device of the embodiments of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of the present application, which are not omitted here for brevity. Repeat.
  • the communication device 600 may be the terminal device of the embodiments of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application, which are not omitted here for brevity. Repeat.
  • FIG. 18 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.
  • the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiments of the present application.
  • chip 700 may also include memory 720 .
  • the processor 710 may call and run a computer program from the memory 720 to implement the method executed by the terminal device or the network device in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .
  • the chip 700 may also include an input interface 730 .
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.
  • the chip 700 may also include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application, which is not repeated here for brevity.
  • the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application, which is not repeated here for brevity.
  • Chips applied to network equipment and terminal equipment can be the same chip or different chips.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • the processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • the general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.
  • the memory mentioned above may be either volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM).
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • FIG. 19 is a schematic block diagram of a communication system 800 according to an embodiment of the present application.
  • the communication system 800 includes a terminal device 810 and a network device 820 .
  • the terminal device 810 is configured to receive synchronization assistance information, where the synchronization assistance information has a first association relationship with the first information; and obtain synchronization according to the synchronization assistance information.
  • the network device 820 is configured to send synchronization assistance information, where the synchronization assistance information has a first association relationship with the first information.
  • the terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 820 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated.
  • the available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State Disk (SSD)), and the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium eg, a Solid State Disk (SSD)
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

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Abstract

本申请涉及一种信息传输方法、终端设备和网络设备。其中,该信息传输方法,包括:终端设备接收同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;该终端设备根据该同步辅助信息获取同步。本申请实施例,终端设备通过接收同步辅助信息,可以更好地辅助终端设备完成时频同步,从而保证终端设备和网络设备之间的正常通信。

Description

信息传输方法、终端设备和网络设备 技术领域
本申请涉及通信领域,更具体地,涉及一种信息传输方法、终端设备和网络设备。
背景技术
目前3GPP正在研究Non Terrestrial Network(NTN,非地面通信网络设备)技术,NTN一般采用卫星通信的方式向地面用户提供通信服务。相比地面蜂窝网通信,卫星通信具有很多独特的优点。首先,卫星通信不受用户地域的限制,例如一般的陆地通信不能覆盖海洋、高山、沙漠等无法搭设通信设备或由于人口稀少而不做通信覆盖的区域。而对于卫星通信来说,由于一颗卫星即可以覆盖较大的地面,加之卫星可以围绕地球做轨道运动。因此理论上地球上每一个角落都可以被卫星通信覆盖。其次,卫星通信有较大的社会价值。卫星通信在边远山区、贫穷落后的国家或地区都可以以较低的成本覆盖到,从而使这些地区的人们享受到先进的语音通信和移动互联网技术,有利于缩小与发达地区的数字鸿沟,促进这些地区的发展。再次,卫星通信距离远,且通信距离增大通讯的成本没有明显增加。最后,卫星通信的稳定性高,不受自然灾害的限制。
在复杂的布网场景下,例如一个地面站可能通过多个服务卫星进行信号中转,为地面上的多个地面小区服务。需要考虑如何更好地辅助终端设备完成时频同步。
发明内容
本申请实施例提供一种信息传输方法、终端设备和网络设备,可以辅助终端设备完成时频同步。
本申请实施例提供一种信息传输方法,包括:
终端设备接收同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;
该终端设备根据该同步辅助信息获取同步。
本申请实施例提供一种信息传输方法,包括:
网络设备发送同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;
其中,该同步辅助信息用于使得终端设备获取同步。
本申请实施例提供一种终端设备,包括:
接收单元,用于接收同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;
同步单元,用于根据该同步辅助信息获取同步。
本申请实施例提供一种网络设备,包括:
发送单元,用于发送同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;
其中,该同步辅助信息用于使得终端设备获取同步。
本申请实施例提供一种终端设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,以使该终端设备执行上述的信息传输方法。
本申请实施例提供一种网络设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,以使该网络设备执行上述的信息传输方法。
本申请实施例提供一种芯片,用于实现上述的信息传输方法。
具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该芯片的设备 执行上述的信息传输方法。
本申请实施例提供一种计算机可读存储介质,用于存储计算机程序,当该计算机程序被设备运行时使得该设备执行上述的信息传输方法。
本申请实施例提供一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述的信息传输方法。
本申请实施例提供一种计算机程序,当其在计算机上运行时,使得计算机执行上述的信息传输方法。
本申请实施例,终端设备通过接收同步辅助信息,可以更好地辅助终端设备完成时频同步,从而保证终端设备和网络设备之间的正常通信。
附图说明
图1是本申请实施例的一个应用场景的示意图。
图2为本申请实施例提供的另一种通信***的架构示意图。
图3为本申请实施例提供的另一种通信***的架构示意图。
图4示出了基于透传转发卫星的NTN场景的示意图。
图5示出了基于再生转发卫星的NTN场景的示意图。
图6是NTN***的定时关系(情况1)的示意图。
图7是NTN***的定时关系(情况2)的示意图。
图8是星历参数的示意图。
图9是NTN***中地面站通过多个卫星为终端设备服务的场景的示意图。
图10是根据本申请一实施例的信息传输方法的示意性流程图。
图11是根据本申请另一实施例的信息传输方法的示意性流程图。
图12是示例1的星历信息指示的示意图。
图13是示例2的星历信息指示的示意图。
图14是示例3的星历信息指示的示意图。
图15是根据本申请一实施例的终端设备的示意性框图。
图16是根据本申请一实施例的网络设备的示意性框图。
图17是根据本申请实施例的通信设备示意性框图。
图18是根据本申请实施例的芯片的示意性框图。
图19是根据本申请实施例的通信***的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述。
图1是本申请实施例的一个应用场景的示意图。
如图1所示,通信***100可以包括终端设备110和网络设备120。网络设备120可以通过空口与终端设备110通信。终端设备110和网络设备120之间支持多业务传输。
应理解,本申请实施例仅以通信***100进行示例性说明,但本申请实施例不限定于此。也就是说,本申请实施例的技术方案可以应用于各种通信***,例如:长期演进(Long Term Evolution,LTE)***、LTE时分双工(Time Division Duplex,TDD)、通用移动通信***(Universal Mobile Telecommunication  System,UMTS)、物联网(Internet of Things,IoT)***、窄带物联网(Narrow Band Internet of Things,NB-IoT)***、增强的机器类型通信(enhanced Machine-Type Communications,eMTC)***、5G通信***(也称为新无线(New Radio,NR)通信***),或未来的通信***等。
在图1所示的通信***100中,网络设备120可以是与终端设备110通信的接入网设备。接入网设备可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备110(例如UE)进行通信。
网络设备120可以是长期演进(Long Term Evolution,LTE)***中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是下一代无线接入网(Next Generation Radio Access Network,NG RAN)设备,或者是NR***中的基站(gNB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备120可以为中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器,或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
终端设备110可以是任意终端设备,其包括但不限于与网络设备120或其它终端设备采用有线或者无线连接的终端设备。
例如,所述终端设备110可以指接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、IoT设备、卫星手持终端、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、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、可穿戴设备、5G网络中的终端设备或者未来演进网络中的终端设备等。
终端设备110可以用于设备到设备(Device to Device,D2D)的通信。
无线通信***100还可以包括与基站进行通信的核心网设备130,该核心网设备130可以是5G核心网(5G Core,5GC)设备,例如,接入与移动性管理功能(Access and Mobility Management Function,AMF),又例如,认证服务器功能(Authentication Server Function,AUSF),又例如,用户面功能(User Plane Function,UPF),又例如,会话管理功能(Session Management Function,SMF)。在一些实施例中,核心网络设备130也可以是LTE网络的分组核心演进(Evolved Packet Core,EPC)设备,例如,会话管理功能+核心网络的数据网关(Session Management Function+Core Packet Gateway,SMF+PGW-C)设备。应理解,SMF+PGW-C可以同时实现SMF和PGW-C所能实现的功能。在网络演进过程中,上述核心网设备也有可能叫其它名字,或者通过对核心网的功能进行划分形成新的网络实体,对此本申请实施例不做限制。
通信***100中的各个功能单元之间还可以通过下一代网络(next generation,NG)接口建立连接实现通信。
例如,终端设备通过NR接口与接入网设备建立空口连接,用于传输用户面数据和控制面信令;终端设备可以通过NG接口1(简称N1)与AMF建立控制面信令连接;接入网设备例如下一代无线接入基站(gNB),可以通过NG接口3(简称N3)与UPF建立用户面数据连接;接入网设备可以通过NG接口2(简称N2)与AMF建立控制面信令连接;UPF可以通过NG接口4(简称N4)与SMF建立控制面信令连接;UPF可以通过NG接口6(简称N6)与数据网络交互用户面数据;AMF可以通过NG 接口11(简称N11)与SMF建立控制面信令连接;SMF可以通过NG接口7(简称N7)与PCF建立控制面信令连接。
图1例如示出了一个基站、一个核心网设备和两个终端设备,在一些实施例中,该无线通信***100可以包括多个基站设备并且每个基站的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
3GPP正在研究Non Terrestrial Network(NTN,非地面通信网络设备)技术,NTN一般采用卫星通信的方式向地面用户提供通信服务。相比地面蜂窝网通信,卫星通信具有很多独特的优点。首先,卫星通信不受用户地域的限制,例如一般的陆地通信不能覆盖海洋、高山、沙漠等无法搭设通信设备或由于人口稀少而不做通信覆盖的区域,而对于卫星通信来说,由于一颗卫星即可以覆盖较大的地面,加之卫星可以围绕地球做轨道运动,因此理论上地球上每一个角落都可以被卫星通信覆盖。其次,卫星通信有较大的社会价值。卫星通信在边远山区、贫穷落后的国家或地区都可以以较低的成本覆盖到,从而使这些地区的人们享受到先进的语音通信和移动互联网技术,有利于缩小与发达地区的数字鸿沟,促进这些地区的发展。再次,卫星通信距离远,且通信距离增大通讯的成本没有明显增加;最后,卫星通信的稳定性高,不受自然灾害的限制。
NTN技术可以和各种通信***结合。例如,NTN技术可以和NR***结合为NR-NTN***。又例如,NTN技术可以和物联网IoT***结合为IoT-NTN***。作为示例,IoT-NTN***可以包括NB-IoT-NTN***和eMTC-NTN***。
图2为本申请实施例提供的另一种通信***的架构示意图。
如图2所示,包括终端设备1101和卫星1102,终端设备1101和卫星1102之间可以进行无线通信。终端设备1101和卫星1102之间所形成的网络还可以称为NTN。在图2所示的通信***的架构中,卫星1102可以具有基站的功能,终端设备1101和卫星1102之间可以直接通信。在***架构下,可以将卫星1102称为网络设备。在本申请的一些实施例中,通信***中可以包括多个网络设备1102,并且每个网络设备1102的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
图3为本申请实施例提供的另一种通信***的架构示意图。
如图3所示,包括终端设备1201、卫星1202和基站1203,终端设备1201和卫星1202之间可以进行无线通信,卫星1202与基站1203之间可以通信。终端设备1201、卫星1202和基站1203之间所形成的网络还可以称为NTN。在图3所示的通信***的架构中,卫星1202可以不具有基站的功能,终端设备1201和基站1203之间的通信需要通过卫星1202的中转。在该种***架构下,可以将基站1203称为网络设备。在本申请的一些实施例中,通信***中可以包括多个网络设备1203,并且每个网络设备1203的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。所述网络设备1203可以是图1中的网络设备120。
应理解,上述卫星1102或卫星1202包括但不限于:
低地球轨道(Low-Earth Orbit,)LEO卫星、中地球轨道(Medium-Earth Orbit,MEO)卫星、地球同步轨道(Geostationary Earth Orbit,GEO)卫星、高椭圆轨道(High Elliptical Orbit,HEO)卫星等等。卫星可采用多波束覆盖地面,例如,一颗卫星可以形成几十甚至数百个波束来覆盖地面。换言之,一个卫星波束可以覆盖直径几十至上百公里的地面区域,以保证卫星的覆盖以及提升整个卫星通信***的***容量。
作为示例,LEO的高度范围可以为500km~1500km,相应轨道周期约可以为1.5小时~2小时,用户间单跳通信的信号传播延迟一般可小于20ms,最大卫星可视时间可以为20分钟,LEO的信号传播距离短且链路损耗少,对用户终端的发射功率要求不高。GEO的轨道高度可以35786km,围绕地球旋转周期可以24小时,用户间单跳通信的信号传播延迟一般可为250ms。
为了保证卫星的覆盖以及提升整个卫星通信***的***容量,卫星采用多波束覆盖地面,一颗卫星可以形成几十甚至数百个波束来覆盖地面;一个卫星波束可以覆盖直径几十至上百公里的地面区域。
需要说明的是,图1至图3只是以示例的形式示意本申请所适用的***,当然,本申请实施例所示的方法还可以适用于其它***。此外,本文中术语“***”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。还应理解,在本申请的实施例中提到的“指示”可以是直接指示,也可以是间接指示,还可以是表示具有关联关系。举例说明,A指示B,可以表示A直接指示B,例如B可以通过A获取;也可以表示A间接指示B,例如A指示C,B可以通过C获取;还可以表示A和B之间具有关联关系。还应理解,在本申请的实施例中提到的“对应”可表示两者之间具有直接对应或间接对应的关系,也可以表示两者之间具有关联关系,也可以是指示与被指示、配置与被配置等关系。还应理解,在本申请的实施例中提到的“预定义”或“预定义规则”可以通过在设备(例如,包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。还应理解,本申请实施例中,所述"协议"可以指通信领域的标准协议,例如可以包括LTE协议、NR协议以及应用于未来的通信***中的相关协议,本申请对此不做限定。
卫星从其提供的功能上可以分为透传转发(transparent payload)和再生转发(regenerative payload)两种。对于透传转发卫星,只提供无线频率滤波,频率转换和放大的功能,只提供信号的透明转发,不会改变其转发的波形信号。对于再生转发卫星,除了提供无线频率滤波,频率转换和放大的功能,还可以提供解调/解码,路由/转换,编码/调制的功能,其具有基站的部分或者全部功能。
在NTN中,可以包括一个或多个网关(Gateway),用于卫星和终端之间的通信。
图4和图5分别示出了基于透传转发卫星和再生转发卫星的NTN场景的示意图。
如图4所示,对于基于透传转发卫星的NTN场景,网关和卫星之间通过馈线链路(Feeder link)进行通信,卫星和终端之间可以通过服务链路(service link)进行通信。如图5所示,对于基于再生转发卫星的NTN场景,卫星和卫星之间通过星间(InterStar link)进行通信,网关和卫星之间通过馈线链路(Feeder link)进行通信,卫星和终端之间可以通过服务链路(service link)进行通信。
下面对NTN***的定时关系进行说明。
在陆地通信***中,信号通信的传播时延通常小于1ms。在NTN***中,由于终端设备和卫星(或者说网络设备)之间的通信距离很远,信号通信的传播时延很大,范围可以从几十毫秒到几百毫秒,具体和卫星轨道高度和卫星通信的业务类型相关。为了处理比较大的传播时延,NTN***的定时关系相对于NR***需要增强。
下面对NTN***的相关内容进行介绍:
1.NTN***的定时关系
在陆地通信***中,信号通信的传播时延通常小于1ms。在NTN***中,由于终端设备和卫星(或者说网络设备)之间的通信距离很远,信号通信的传播时延很大,范围可以从几十毫秒到几百毫秒,具体和卫星轨道高度和卫星通信的业务类型相关。为了处理比较大的传播时延,NTN***的定时关系相对于NR***需要增强。
在NR-NTN或IoT(Internet of Things,物联网)-NTN***中,和NR***一样,UE在进行上行传输时需要考虑定时提前(Timing Advance,TA)的影响。由于***中的传播时延较大,因此TA值的范围也比较大。当UE被调度在时隙n(或子帧n)进行上行传输时,该UE考虑往返传播时延,在上行传输时提前传输,从而可以信号到达网络设备侧时在网络设备侧上行的时隙n(或子帧n)上。具体地,NTN***中的定时关系可能包括两种情况,分别如图6和图7所示。
情况1:如图6所示,网络设备侧的下行子帧和上行子帧是对齐的。相应地,为了使UE的上行传输到达网络设备侧时和网络设备侧的上行子帧对齐,UE需要使用一个较大的TA值。在一些情况下,该TA值对应定时偏移值Koffset。
情况2:如图7所示,网络设备侧的下行子帧和上行子帧之间有一个偏移值。在这种情况下,如果想要使UE的上行传输到达网络设备侧时和网络设备侧的上行子帧对齐,UE只需要使用一个较小的TA值。在一些情况下,该TA值对应定时偏移值Koffset。在另一些情况下,UE的往返传输时间RTT对应定时偏移值Koffset。
2.NTN***中的同步辅助信息指示
在NTN***中,网络设备需要通过***消息向终端设备发送同步辅助信息例如卫星星历信息、参考点位置、公共定时偏移值(例如网络设备和参考点之间的定时偏移值和/或网络设备和卫星之间的定时偏移值)、时间戳(timestamp)等信息中的至少一项,用于终端设备完成时域和/或频域同步。相应地,终端设备需要获取网络设备发送的同步辅助信息,同时根据自身的全球导航卫星***(Global Navigation Satellite System,GNSS)能力来完成相应的时域和/或频域同步。
在本申请中,卫星星历信息包括卫星的位置和速度状态(Position and Velocity State,PVS)向量信息。终端设备根据网络设备发送的星历信息格式获取卫星的PVS向量信息。由于PVS向量信息关联了时间信息,在一些情况下,PVS向量信息也可以被认为是位置速度时间(Position Velocity Time,PVT)参数。
具体地,网络设备发送的星历信息格式可以包括以下两种方式:
方式1:基于轨道信息的星历信息格式。
在该方式中,网络设备广播t0时刻的星历参数(α(km),e,I(deg),Ω(deg),ω(deg),M(deg)),参见图8。其中,α表示长半径(Semi-major,单位可以米),e表示离心率(Eccentricity),ω表示近心点角(Argument of periapsis,单位可以是rad(弧度角)),Ω表示升交点经度(Longitude of ascending node,单位可以是rad),i表示倾斜度(Inclination,单位可以是rad),M表示新纪元时间t 0的平均近点角(Mean anomaly M at epoch time t0,单位可以是rad)。
进一步地,终端设备根据收到的t0时刻的该星历参数,可以得到卫星在t0时刻的基于地心地固(Earth-Centered,Earth-Fixed,ECEF)坐标系(也称为地心坐标系)的PVS向量;终端设备根据卫星在t0时刻的基于地心坐标系的PVS向量,可以得到卫星在t时刻的基于地心坐标系的PVS向量。
或者,进一步地,终端设备根据收到的卫星在t0时刻的该星历参数,得到卫星在t时刻的星历参 数。然后终端设备根据卫星在t时刻的该星历参数,可以得到卫星在t时刻的基于地心坐标系的PVS向量。
基于地心坐标系的PVS向量包括(S X,S Y,S Z,V X,V Y,V Z)。其中,(S X,S Y,S Z)对应卫星位置,(V X,V Y,V Z)对应卫星速度。
作为示例,在该方式中,网络设备通知的星历信息格式如下所示:
Figure PCTCN2021084164-appb-000001
作为另一示例,相应地,终端设备获取的PVS向量如下所示:
Figure PCTCN2021084164-appb-000002
方式2:基于瞬时状态向量的星历信息格式,例如卫星在特定时刻的PVS向量,或基于PVT的星历信息格式。
在该方式中,网络设备向终端设备广播卫星在t0时刻的基于地心坐标系的PVS向量(S X,S Y,S Z,V X,V Y,V Z)。终端设备根据卫星在t0时刻的基于地心坐标系的PVS向量,得到卫星在t时刻的基于地心坐标系的PVS向量。
在上述两种方式中,对于卫星在t0时刻的星历信息通知,t0时刻这个信息可以通过接收到该星历信息的下行时间单元隐式得到。另外,方式1的通知方式相对于方式2来说,开销更小一些。但是在方式1中终端设备需要建模估计卫星的PVS向量,因此精度相对于方式2来说更差一些。
3.NTN***中的定时调整
在NTN***中,网络设备需要向终端设备发送同步辅助信息例如星历信息(卫星移动速度和/或卫星位置)、参考点位置、公共定时偏移值(例如网络设备和参考点之间的定时偏移值和/或网络设备和卫星之间的定时偏移值)、时间戳(timestamp)等信息中的至少一项,用于终端设备完成时域和/或频域同步。相应地,终端设备需要获取网络设备发送的同步辅助信息,同时根据自身的GNSS能力来完成相 应的时域和/或频域同步。终端设备应基于其GNSS能力获得以下信息中的至少一个:终端设备的位置、时间基准和频率基准。并且,基于上述信息,以及网络设备指示的同步辅助信息(例如服务卫星星历信息或时间戳),终端设备可以计算定时和频偏,并在空闲态或非激活态或连接态应用定时提前补偿或频偏调整。
作为示例,终端设备根据以下方式进行UE专用TA的估计:
方式1:终端设备基于GNSS获取的位置以及网络设备指示的服务卫星星历信息来估计UE专用TA;
方式2:终端设备基于GNSS获取的参考时间和网络设备指示的参考时间例如时间戳来估计UE专用TA。
在随机接入过程发起前,空闲态或非激活态的终端设备可以根据以下方式计算TA值,并根据确定的TA进行Msg1或MsgA的传输:
T TA=(N TA,UE-specific+N TA,offset+N TA,common)*T c
其中,N TA,UE-specific可以是终端设备自行估计得到的TA值,N TA,offset和相关协议相同例如是根据布网频段和LTE或NR共存情况确定的,N TA,common包括网络设备广播的公共定时偏移值,N TA,common的粒度或单位是根据T c确定的,T c表示采样时间间隔单位,T c=1/(480*1000*4096)。
在一些情况中,如果终端设备处于连接态,则可以根据以下公式计算TA值,并根据确定的TA进行上行信道或信号的传输:
T TA=(N TA+N TA,UE-specific+N TA,offset+N TA,common)*T c
其中,N TA,UE-specific可以是终端设备自行估计得到的TA值,N TA,offset和相关协议相同例如是根据布网频段和LTE或NR共存情况确定的,N TA,common包括网络设备广播的公共定时偏移值,N TA可以是网络设备指示的TA值。
也就是说,如果终端设备处于连接态,终端设备需要根据终端设备自行估计得到的TA值、网络设备广播的公共定时偏移值和网络设备指示的TA值联合估计和更新TA。
在相关技术中,只考虑了地面上的网络设备广播服务卫星的星历信息的格式。在实际情况中,可能出现地面上的一个网络设备例如地面站通过多个服务卫星进行信号中转,为地面上的多个地面小区服务的情况,如图9所示。在该复杂的布网场景下,需要考虑网络设备如何通知星历信息,以更好地辅助终端设备完成时频同步。
图10是根据本申请一实施例的信息传输方法200的示意性流程图。该方法在一些实施例中可以应用于图1至图9所示的***,但并不仅限于此。该方法包括以下内容的至少部分内容。
S210、终端设备接收同步辅助信息,该同步辅助信息与第一信息具有第一关联关系。
S220、该终端设备根据该同步辅助信息获取同步。
例如,终端设备可以接收来自网络设备的同步辅助信息,根据该同步辅助信息获取时间同步和/或频率同步。
在实际情况中,可能出现地面上的一个网络设备例如地面站通过多个服务卫星进行信号中转,为地面上的多个地面小区服务的情况。因此,网络设备需要向终端设备广播关联一个或多个卫星的星历信息。例如,在图9所示的场景中,在第一时间段,卫星1为地面小区1提供服务;但在第二时间段,随着卫星1的离去和卫星2的到来,可能变成卫星2为地面小区1提供服务。在这种情况下,终端设备需要知道在第一时间段应根据网络设备提供的卫星1的星历信息来进行时频同步预估计,在第二时间段应根据 网络设备提供的卫星2的星历信息来进行时频同步预估计。
在一些实施例中,该第一信息包括以下至少之一:
时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
在一些实施例中,该参考信号索引包括SSB(Synchronization Signal and PBCH block,同步信号和PBCH(Physical Broadcast CHannel,广播物理信道)块)索引和/或CSI-RS(Channel State Information-Reference Signal,信道状态信息参考信号)索引。
例如,第一关联关系包括同步辅助信息与时间信息的关联关系。再如,第一关联关系包括同步辅助信息与星历信息格式的关联关系。再如,第一关联关系包括同步辅助信息与组标识的关联关系。再如,第一关联关系包括同步辅助信息与SSB索引或CSI-RS索引的关联关系。再如,第一关联关系包括同步辅助信息与小区标识的关联关系。再如,第一关联关系包括同步辅助信息与天线极化模式的关联关系。再如,第一关联关系包括同步辅助信息与卫星标识的关联关系。再如,第一关联关系包括同步辅助信息与服务卫星的关联关系。再如,第一关联关系包括同步辅助信息与服务卫星的服务时长的关联关系。
在一些实施例中,该同步辅助信息用于确定以下至少之一:
星历信息、公共定时提前(Timing Advance,TA)值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端设备位置信息、参考点信息。
在一些实施例中,该星历信息用于确定卫星的位置信息和/或卫星的速度信息。例如,星历信息用于指示卫星的位置信息和/或卫星的速度信息。作为示例,星历信息格式可以基于PVT的星历信息格式。再如,星历信息用于指示卫星的星历参数(α(km),e,I(deg),Ω(deg),ω(deg),M(deg))。终端设备根据卫星的星历参数确定卫星的位置信息和/或卫星的速度信息。作为示例,星历信息格式可以为基于轨道信息的星历信息格式。
在一些实施例中,该同步辅助信息通过***消息、切换命令、无线资源控制(RRC)信令、媒体接入控制控制单元(MAC CE)和下行控制信息(DCI)中的至少一种携带。
在一些实施例中,该***消息包括非地面网络(Non-Terrestrial Network,NTN)专用***消息。
在一些实施例中,终端设备接收同步辅助信息,包括:终端设备根据网络设备发送的***消息、切换(handover)命令、RRC、MAC CE和DCI中的至少一种来接收同步辅助信息。
例如,终端设备接收网络设备发送的NTN-SIB消息,该NTN-SIB消息中包括与该网络设备对应的至少一组星历信息。
再如,一个NTN-SIB消息只包括一组星历信息的指示信息。
再如,一个NTN-SIB消息包括多组星历信息的指示信息。
再如,终端设备根据网络设备发送的切换(handover)命令来接收一组或多组星历信息。
在一些实施例中,该同步辅助信息包括至少一组星历信息,该至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,该第一星历信息组与该第一信息具有该第一关联关系。
例如,终端设备可以接收网络设备发送的至少一组星历信息,根据该至少一组星历信息中的第一星历信息组获取时间同步和/或频率同步。
应理解,在一些情况中,例如一组星历信息中只包括一个星历信息时,也可以没有星历信息组的概 念。
在一些实施例中,该同步辅助信息包括至少一个第一星历信息,该至少一个第一星历信息与该第一信息具有该第一关联关系。
在一些实施例中,该第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取。
在一些实施例中,该第一关联关系根据预定义规则获取。
例如,同步辅助信息可以包括多组星历信息,其中一组为第一星历信息组。第一星历信息组可以包括多个第一星历信息,这多个第一星历信息与第一信息具有第一关联关系。例如,第一星历信息组的多个第一星历信息与某种星历信息格式具有第一关联关系。再如,第一星历信息组的多个第一星历信息与某种天线极化模式具有第一关联关系。
在一些实施例中,该第一星历信息组包括多个第一星历信息,该多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间(Position Velocity and Time,PVT)参数。
在一些实施例中,终端设备通过预定义或通过网络设备发送的指示信息来获取第一关联关系。例如,终端设备根据网络设备发送的***消息、切换(handover)命令、RRC、MAC CE和DCI中的至少一种来获取第一关联关系。
在一些实施例中,第一关联关系包括第一星历信息组与服务卫星的关联关系,或者,第一星历信息组包括终端设备的服务卫星的星历信息。
例如,第一星历信息组为终端设备的服务卫星的星历信息,终端设备根据GNSS获取的位置信息确定服务卫星,并根据第一星历信息组获取第一时间同步和/或第一频率同步。
在一些实施例中,第一关联关系包括第一星历信息组与即将提供服务的卫星的关联关系,或者,第一星历信息组包括即将为终端设备服务的卫星的星历信息。
例如,第一星历信息为即将为终端设备服务的卫星的星历信息,终端设备根据GNSS获取的位置信息确定下一个为该终端设备服务的卫星,并根据第一星历信息组获取第一时间同步和/或第一频率同步。
在一些实施例中,第一关联关系包括第一星历信息组与第一参考信号索引例如第一SSB索引的关联关系,或者,第一星历信息组为第一参考信号索引关联的波束方向对应的星历信息。
例如,第一星历信息组关联第一SSB索引,终端设备根据第一星历信息组获取与第一SSB索引对应的第一时间同步和/或第一频率同步。
在一些实施例中,该多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。在一些情况下,多个第一星历信息顺序排列时对应的多个时间可以是时刻。例如,t1、t2、t3、t4、t5是单调递增的。第一星历信息组包括5个第一星历信息,所述5个第一星历信息与所述t1、t2、t3、t4、t5对应,所述5个第一星历信息按照时间顺序t1、t2、t3、t4、t5排列。或者,所述5个第一星历信息也可以按照时间顺序t5、t4、t3、t2、t1排列。
在一些实施例中,该第一星历信息组中的至少一个第一星历信息对应的时间是根据网络设备发送该同步辅助信息的下行时间单元确定的。
在一些实施例中,该下行时间单元可以为时隙、子帧或符号。
例如,该多个第一星历信息中的至少一个第一星历信息对应的时刻是根据网络设备发送该星历信息 的下行时间单元的起始位置确定的。作为示例,该多个第一星历信息中的第一个或最后一个第一星历信息对应的时刻是根据网络设备发送该星历信息的下行时间单元的起始位置确定的。
在一些实施例中,第一星历信息组中包括多个第一星历信息,该多个第一星历信息对应多个不同时刻。作为示例,第一星历信息组中包括的第一星历信息如下表所示。
表1第一星历信息指示
时刻 第一星历信息
t0 星历信息1_0
t1 星历信息1_1
t2 星历信息1_2
tn 星历信息1_n
终端设备可以根据表1获取t0到tn中任意时刻的星历信息。例如,终端设备想要获取t时刻的星历信息,t为t1和t2之间的一个时刻,则终端设备可以根据星历信息1-1和星历信息1-2例如通过插值的方式获取该t时刻的星历信息。
在一些实施例中,该多个第一星历信息中的相邻两个第一星历信息对应的相邻两个时刻之间的时间间隔是预定义的,或是网络设备配置的。
在一些实施例中,该至少一组星历信息包括第二星历信息组,该第二星历信息组包括至少一个第二星历信息,该第二星历信息组与该第一信息具有第二关联关系。
例如,第一星历信息组关联服务卫星,第二星历信息组关联即将提供服务的卫星。
再如,第一星历信息组关联第一参考信号索引,第二星历信息组关联第二参考信号索引。
再如,第一星历信息组关联第一组标识,第二星历信息组关联第二组标识。
再如,第一星历信息组关联第一小区标识,第二星历信息组关联第二小区标识。
在一些实施例中,该同步辅助信息包括至少一个第二星历信息,该至少一个第二星历信息与该第一信息具有该第二关联关系。
在一些实施例中,该第二关联关系通过***消息、切换命令、无线资源控制(Radio Resource Control,RRC)信令、媒体接入控制(Medium Access Control,MAC)控制单元(Control Element,CE)和下行控制信息(Downlink Control Information,DCI)中的至少一种获取。
在一些实施例中,该第二关联关系根据预定义规则获取。
在一些实施例中,第一关联关系和第二关联关系为相同的关联关系。例如,第一关联关系包括第一星历信息和组标识的关联关系,第二关联关系也包括第二星历信息和组标识的关联关系。作为示例,第一星历信息关联第一组标识,第二星历信息关联第二组标识。
在一些实施例中,第一星历信息组和第二星历信息组中的至少部分星历信息对应相同的时刻。例如第一星历信息组的结束时刻和第二星历信息组的起始时刻重叠。再如,第一星历信息组对应第一时间段,第二星历信息组对应第二时间段,第一时间段的结束时刻和第二时间段的起始时刻重叠。
在一些实施例中,该第一星历信息组包括的至少一个第一星历信息和该第二星历信息组包括的至少 一个第二星历信息对应相同的时刻。例如,第一星历信息组包括5个第一星历信息,分别对应t1、t2、t3、t4、t5时刻。第二星历信息组包括3个第二星历信息,分别对应t4、t5、t6时刻。
在一些实施例中,该第一星历信息组包括的第一星历信息和该第二星历信息组包括的第二星历信息对应不同的时刻。例如,第一星历信息对应第一时间段,第二星历信息对应第二时间段,第一时间段和第二时间段不重叠。具体例如,第一星历信息组包括5个第一星历信息,分别对应t1、t2、t3、t4、t5时刻。第二星历信息组包括3个第二星历信息,分别对应t6、t7、t8时刻。
在一些实施例中,至少一组星历信息中的所有星历信息对应相同的星历信息格式。
在一些实施例中,该第一星历信息对应第一星历信息格式,该第二星历信息对应第二星历信息格式。
例如,假设第一星历信息格式的星历信息通知方式精度高于第二星历信息格式的星历信息通知方式。第一星历信息对应服务卫星的星历信息,第二星历信息对应即将提供服务的卫星的星历信息。其中,第一星历信息对应第一星历信息格式,以保证服务卫星对应的时频同步的精度。第二星历信息对应第二星历信息格式,用于预估可能的时频同步。或者,第一星历信息对应即将不提供服务的卫星的星历信息,第二星历信息对应服务卫星的星历信息,第一星历信息对应第二星历信息格式,第二星历信息对应第一星历信息格式。或者,第一星历信息对应即将不提供服务的卫星的星历信息,第二星历信息对应即将提供服务的卫星的星历信息,第一星历信息对应第二星历信息格式,第二星历信息对应第一星历信息格式。
在一些实施例中,该第一星历信息和该第二星历信息对应相同的星历信息格式。
在一些实施例中,所述第一星历信息组包括的第一星历信息和所述第二星历信息组包括的第二星历信息对应相同的时刻。
例如,第一星历信息和第二星历信息如下表所示。
表2星历信息指示
时刻 第一星历信息 第二星历信息
t0 星历信息1_0 星历信息2_0
t1 星历信息1_1 星历信息2_1
t2 星历信息1_2 星历信息2_2
tn 星历信息1_n 星历信息2_n
例如,第一星历信息对应当前服务卫星例如第一卫星的星历信息,第二星历信息对应下一个为该地面小区服务的卫星例如第二卫星的星历信息。如果终端设备确定t时刻是第一卫星提供服务,则终端设备可以根据第一星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。如果终端设备确定t时刻是第二卫星提供服务,则终端设备可以根据第二星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。
再如,第一星历信息对应第一SSB索引(或第一卫星波束或第一天线极化模式),第二星历信息对应第二SSB索引(或第二卫星波束或第二天线极化模式)。如果终端设备是根据第一SSB索引和网络设备进行无线通信,则终端设备可以根据第一星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。如果终端设备是根据第二SSB索引和网络设备进行无线通信,则终端设备可以根据第二星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。
在一些实施例中,所述第一星历信息组包括的至少一个第一星历信息和所述第二星历信息组包括的至少一个第二星历信息对应不同的时刻。
例如,星历信息中包括的第一星历信息和第二星历信息如下表所示。其中,NA表示无效值。
表3星历信息指示
时刻 第一星历信息 第二星历信息
t0 星历信息1_0 NA
t1 星历信息1_1 NA
t2 星历信息1_2 NA
NA
tn 星历信息1_n 星历信息2_n
tn+1 NA 星历信息2_n+1
tn+2 NA 星历信息2_n+2
NA
tn+m NA 星历信息2_n+m
终端设备根据表3可以确定tn时刻前关联第一星历信息,tn时刻后关联第二星历信息。如果终端设备确定t时刻是t0到tn中的某个时刻,则终端设备可以根据第一星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。如果终端设备确定t时刻是tn到tn+m中的某个时刻,则终端设备可以根据第二星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。
例如,第一星历信息对应当前服务卫星例如第一卫星的星历信息,第二星历信息对应下一个为该地面小区服务的卫星例如第二卫星的星历信息。
再如,第一星历信息对应第一小区标识关联的卫星的星历信息,第二星历信息对应第二小区标识关联的卫星的星历信息。
再如,第一星历信息关联第一SSB索引(或第一卫星波束或第一天线极化模式),第二星历信息关联第二SSB索引(或第二卫星波束或第二天线极化模式)。
在一些实施例中,所述第一星历信息组包括的第一星历信息和所述第二星历信息组包括的第二星历信息对应不同的时刻。
例如,星历信息的指示如下表所示。
表4星历信息指示
Figure PCTCN2021084164-appb-000003
Figure PCTCN2021084164-appb-000004
由于tn时刻和tk时刻之间没有延续性,因此终端设备可以确定t0到tn时刻的星历信息属于同一组,对应第一星历信息。tk到tk+m时刻的星历信息属于同一组,对应第二星历信息。或者说,终端设备根据表4可以确定t0到tn时刻的星历信息关联第一星历信息,tk到tk+m时刻的星历信息关联第二星历信息。如果终端设备确定t时刻是t0到tn中的某个时刻,则终端设备可以根据第一星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。如果终端设备确定t时刻是tk到tk+m中的某个时刻,则终端设备可以根据第二星历信息获取t时刻的星历信息,从而获取对应的时域同步和/或频率同步。
例如,第一星历信息对应当前服务卫星例如第一卫星的星历信息,第二星历信息对应下一个为该地面小区服务的卫星例如第二卫星的星历信息。
再如,第一星历信息对应第一小区标识关联的卫星的星历信息,第二星历信息对应第二小区标识关联的卫星的星历信息。
再如,第一星历信息关联第一SSB索引(或第一卫星波束或第一天线极化模式),第二星历信息关联第二SSB索引(或第二卫星波束或第二天线极化模式)。
在一些实施例中,该终端设备根据该同步辅助信息获取同步,包括:
该终端设备根据该同步辅助信息获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
在一些实施例中,该终端设备根据该同步辅助信息获取同步,包括:
该终端设备根据该第一星历信息组获取第一同步;和/或,
该终端设备根据该第二星历信息组获取第二同步。
例如,第一同步可以包括第一时间同步和/或第一频率同步。第二同步可以包括第二时间同步和/或第二频率同步。其中,时间同步也可以称为时域同步。终端设备可以接收网络设备发送的第一星历信息组和/或第二星历信息组,根据第一星历信息组获取第一时间同步和/或第一频率同步,和/或,根据第二星历信息组获取第二时间同步和/或第二频率同步。
本申请实施例中,终端设备可以从网络设备接收同步辅助信息例如一组或多组星历信息。其中,每组星历信息中可以包括一个或多个星历信息。通过该方式,终端设备可以使用当前时间段内对应的同步辅助信息例如星历信息来进行时频同步。另外,终端设备还可以根据后续时间段内对应的同步辅助信息例如星历信息来提前进行时频同步,从而保证终端设备和网络设备之间的正常通信。
图11是根据本申请另一实施例的信息传输方法300的示意性流程图。该方法可以应用于图1至图9所示的***,但并不仅限于此。该方法包括以下内容的至少部分内容。
S310、网络设备发送同步辅助信息,该同步辅助信息与第一信息具有第一关联关系。
其中,该同步辅助信息用于使得终端设备获取同步。
在一些实施例中,该第一信息包括以下至少之一:
时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
在一些实施例中,该同步辅助信息用于确定以下至少之一:
星历信息、公共定时提前TA值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端设备位置信息、参考点信息;其中,该星历信息用于确定卫星的位置信息和/或卫星的速度信息。
在一些实施例中,该同步辅助信息包括至少一组星历信息,该至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,该第一星历信息组与该第一信息具有该第一关联关系。
在一些实施例中,该第一星历信息组包括多个第一星历信息,该多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间(PVT)参数。
在一些实施例中,该多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。
在一些实施例中,该第一星历信息组中的至少一个第一星历信息对应的时间是根据网络设备发送该同步辅助信息的下行时间单元确定的。
在一些实施例中,该至少一组星历信息包括第二星历信息组,该第二星历信息组包括至少一个第二星历信息,该第二星历信息组与该第一信息具有第二关联关系。
在一些实施例中,该第二关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
或者,该第二关联关系根据预定义规则获取。
在一些实施例中,该第一星历信息组包括的至少一个第一星历信息和该第二星历信息组包括的至少一个第二星历信息对应相同的时刻。
在一些实施例中,该第一星历信息组包括的第一星历信息和该第二星历信息组包括的第二星历信息对应不同的时刻。
在一些实施例中,该第一星历信息对应第一星历信息格式,该第二星历信息对应第二星历信息格式。
在一些实施例中,该第一星历信息和该第二星历信息对应相同的星历信息格式。
在一些实施例中,该第一星历信息组用于指示该终端设备获取第一同步;和/或,该第二星历信息组用于指示该终端设备获取第二同步。
在一些实施例中,该同步辅助信息通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种携带。
在一些实施例中,该第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
或者,该第一关联关系根据预定义规则获取。
在一些实施例中,该***消息包括非地面网络NTN专用***消息。
在一些实施例中,该同步辅助信息用于指示终端设备获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
本实施例的网络设备执行方法300的具体示例可以参见上述方法200的中关于网络设备的相关描述,为了简洁,在此不再赘述。
以下为几个具体的示例。为了便于描述,在以下示例中,星历信息用PVT向量来表示。
示例1
如图12所示,终端设备收到网络设备发送的多个星历信息(或两组星历信息)。其中,PVT1~PVT4对应T1~T4时刻卫星(satellite)A的星历信息,PVT5~PVT8对应T5~T8时刻卫星B的星历信息。卫星A和卫星B均对应相同的小区例如CELL1。在小区CELL1中,如果终端设备在T2和T3之间的t时刻发生了带宽部分(Bandwidth Part,BWP)切换(switch),则终端设备可以重用之前的同步信息。如果终端设备在T4和T5之间的t时刻发生了BWP切换,则终端设备需要根据卫星B的星历信息重新进行同步。
在一些情况中,卫星A和卫星B也可以是相同的卫星,本申请对此不限定。
示例2
如图13所示,终端设备收到网络设备发送的多个星历信息。在该示例中,终端设备在T1时刻前收到网络设备通过NTN-SIB发送的一组星历信息PVT1~PVT4。PVT1~PVT4对应T1~T4时刻卫星A的星历信息。终端设备在T3时刻和T4时刻之间收到网络设备通过NTN-SIB发送的另一组星历信息PVT5~PVT8。PVT5~PVT8对应T4~T7时刻卫星B的星历信息。卫星A和卫星B均对应相同的小区例如CELL1。在小区CELL1中,由于T4时刻对应两个星历信息,因此终端设备可以确定T4时刻是转折点。即PVT1~PVT4对应前一组星历信息,PVT5~PVT8对应后一组星历信息。
在一些情况中,卫星A和卫星B也可以是相同的卫星,本申请对此不限定。
在一些情况中,PVT4和PVT5也可以是相同的星历信息,本申请对此不限定。
示例3
如图13所示。终端设备收到网络设备发送的多个星历信息(或两组星历信息)。在该示例中,终端设备在T1时刻前收到网络设备通过NTN-SIB发送的两组星历信息PVT1~PVT4和PVT5~PVT8。PVT1~PVT4和PVT5~PVT8分别对应T1~T4时刻波束(beam)A和波束B的星历信息。波束A和波束B均对应相同的小区例如CELL1。在小区1中,如果终端设备在T2和T3之间的t时刻发生了BWP切换(switch),终端设备的激活BWP从BWP A切换为BWP B,其中BWP A关联波束A,BWP B关联波束B,则终端设备需要根据波束B对应的星历信息重新获取同步。
在NTN***中,通过本申请实施例中的方案,网络设备可以向终端设备通知一组或多组星历信息。其中,每组星历信息中包括一个或多个星历信息。通过该方式,终端设备可以使用当前时间段内对应的星历信息来进行时频同步。另外,终端设备还可以根据后续时间段内对应的星历信息来提前进行时频同步,从而保证终端设备和网络设备之间的正常通信。
图15是根据本申请一实施例的终端设备400的示意性框图。该终端设备400可以包括:
接收单元410,用于接收同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;
同步单元420,用于根据该同步辅助信息获取同步。
在一些实施例中,该第一信息包括以下至少之一:
时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
在一些实施例中,该同步辅助信息用于确定以下至少之一:
星历信息、公共定时提前TA值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端 设备位置信息、参考点信息;其中,该星历信息用于确定卫星的位置信息和/或卫星的速度信息。
在一些实施例中,该同步辅助信息包括至少一组星历信息,该至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,该第一星历信息组与该第一信息具有该第一关联关系。
在一些实施例中,该第一星历信息组包括多个第一星历信息,该多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间PVT参数。
在一些实施例中,该多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。
在一些实施例中,该第一星历信息组中的至少一个第一星历信息对应的时间是根据网络设备发送该同步辅助信息的下行时间单元确定的。
在一些实施例中,该至少一组星历信息包括第二星历信息组,该第二星历信息组包括至少一个第二星历信息,该第二星历信息组与该第一信息具有第二关联关系。
在一些实施例中,该第二关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
或者,该第二关联关系根据预定义规则获取。
在一些实施例中,该第一星历信息组包括的至少一个第一星历信息和该第二星历信息组包括的至少一个第二星历信息对应相同的时刻。
在一些实施例中,该第一星历信息组包括的第一星历信息和该第二星历信息组包括的第二星历信息对应不同的时刻。
在一些实施例中,该第一星历信息对应第一星历信息格式,该第二星历信息对应第二星历信息格式。
在一些实施例中,该第一星历信息和该第二星历信息对应相同的星历信息格式。
在一些实施例中,该同步单元具体用于:
根据该第一星历信息组获取第一同步;和/或,
根据该第二星历信息组获取第二同步。
在一些实施例中,该同步辅助信息通过***消息、切换命令、无线资源控制RRC信令、媒体接入控制控制单元MAC CE和下行控制信息DCI中的至少一种携带。
在一些实施例中,该第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
或者,该第一关联关系根据预定义规则获取。
在一些实施例中,该***消息包括非地面网络NTN专用***消息。
在一些实施例中,该终端设备根据该同步辅助信息获取同步,包括:
该终端设备根据该同步辅助信息获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
本申请实施例的终端设备400能够实现前述的方法实施例中的终端设备的对应功能。该终端设备400中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的终端设备400中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图16是根据本申请一实施例的网络设备500的示意性框图。该网络设备500可以包括:
发送单元510,用于发送同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;
其中,该同步辅助信息用于使得终端设备获取同步。
在一些实施例中,该第一信息包括以下至少之一:
时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
在一些实施例中,该同步辅助信息用于确定以下至少之一:
星历信息、公共定时提前TA值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端设备位置信息、参考点信息;其中,该星历信息用于确定卫星的位置信息和/或卫星的速度信息。
在一些实施例中,该同步辅助信息包括至少一组星历信息,该至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,该第一星历信息组与该第一信息具有该第一关联关系。
在一些实施例中,该第一星历信息组包括多个第一星历信息,该多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间PVT参数。
在一些实施例中,该多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。
在一些实施例中,该第一星历信息组中的至少一个第一星历信息对应的时间是根据网络设备发送该同步辅助信息的下行时间单元确定的。
在一些实施例中,该至少一组星历信息包括第二星历信息组,该第二星历信息组包括至少一个第二星历信息,该第二星历信息组与该第一信息具有第二关联关系。
在一些实施例中,该第二关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
或者,该第二关联关系根据预定义规则获取。
在一些实施例中,该第一星历信息组包括的至少一个第一星历信息和该第二星历信息组包括的至少一个第二星历信息对应相同的时刻。
在一些实施例中,该第一星历信息组包括的第一星历信息和该第二星历信息组包括的第二星历信息对应不同的时刻。
在一些实施例中,该第一星历信息对应第一星历信息格式,该第二星历信息对应第二星历信息格式。
在一些实施例中,该第一星历信息和该第二星历信息对应相同的星历信息格式。
在一些实施例中,该第一星历信息组用于指示该终端设备获取第一同步;和/或,该第二星历信息组用于指示该终端设备获取第二同步。
在一些实施例中,该同步辅助信息通过***消息、切换命令、无线资源控制RRC信令、媒体接入控制控制单元MAC CE和下行控制信息DCI中的至少一种携带。
在一些实施例中,该第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
或者,该第一关联关系根据预定义规则获取。
在一些实施例中,该***消息包括非地面网络NTN专用***消息。
在一些实施例中,该同步辅助信息用于指示终端设备获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
本申请实施例的网络设备500能够实现前述的方法实施例中的网络设备的对应功能。该网络设备500中的各个模块(子模块、单元或组件等)对应的流程、功能、实现方式以及有益效果,可参见上述方法实施例中的对应描述,在此不再赘述。需要说明,关于申请实施例的网络设备500中的各个模块(子模块、单元或组件等)所描述的功能,可以由不同的模块(子模块、单元或组件等)实现,也可以由同一个模块(子模块、单元或组件等)实现。
图17是根据本申请实施例的通信设备600示意性结构图。该通信设备600包括处理器610,处理器610可以从存储器中调用并运行计算机程序,以使通信设备600实现本申请实施例中的方法。
在一些实施例中,通信设备600还可以包括存储器620。其中,处理器610可以从存储器620中调用并运行计算机程序,以使通信设备600实现本申请实施例中的方法。
其中,存储器620可以是独立于处理器610的一个单独的器件,也可以集成在处理器610中。
在一些实施例中,通信设备600还可以包括收发器630,处理器610可以控制该收发器630与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线,天线的数量可以为一个或多个。
在一些实施例中,该通信设备600可为本申请实施例的网络设备,并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,该通信设备600可为本申请实施例的终端设备,并且该通信设备600可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
图18是根据本申请实施例的芯片700的示意性结构图。该芯片700包括处理器710,处理器710可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
在一些实施例中,芯片700还可以包括存储器720。其中,处理器710可以从存储器720中调用并运行计算机程序,以实现本申请实施例中由终端设备或者网络设备执行的方法。
其中,存储器720可以是独立于处理器710的一个单独的器件,也可以集成在处理器710中。
在一些实施例中,该芯片700还可以包括输入接口730。其中,处理器710可以控制该输入接口730与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
在一些实施例中,该芯片700还可以包括输出接口740。其中,处理器710可以控制该输出接口740与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
在一些实施例中,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,该芯片可应用于本申请实施例中的终端设备,并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
应用于网络设备和终端设备的芯片可以是相同的芯片或不同的芯片。
应理解,本申请实施例提到的芯片还可以称为***级芯片,***芯片,芯片***或片上***芯片等。
上述提及的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、现成可编程门阵列(field programmable gate array,FPGA)、专用集成电路(application specific integrated circuit,ASIC)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等。其中,上述提到的通用处理器可以是微处理器或者也可以是任何常规的处理器等。
上述提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(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)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM)。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图19是根据本申请实施例的通信***800的示意性框图。该通信***800包括终端设备810和网络设备820。
终端设备810,用于接收同步辅助信息,该同步辅助信息与第一信息具有第一关联关系;根据该同步辅助信息获取同步。
网络设备820,用于发送同步辅助信息,该同步辅助信息与第一信息具有第一关联关系。
其中,该终端设备810可以用于实现上述方法中由终端设备实现的相应的功能,以及该网络设备820可以用于实现上述方法中由网络设备实现的相应的功能。为了简洁,在此不再赘述。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行该计算机程序指令时,全部或部分地产生按照本申请实施例中的流程或功能。该计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。该计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,该计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。该计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(Solid State Disk,SSD))等。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的***、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
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该权利要求的保护范围为准。

Claims (82)

  1. 一种信息传输方法,包括:
    终端设备接收同步辅助信息,所述同步辅助信息与第一信息具有第一关联关系;
    所述终端设备根据所述同步辅助信息获取同步。
  2. 根据权利要求1所述的方法,其中,所述第一信息包括以下至少之一:
    时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
  3. 根据权利要求1或2所述的方法,其中,所述同步辅助信息用于确定以下至少之一:
    星历信息、公共定时提前TA值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端设备位置信息、参考点信息;其中,所述星历信息用于确定卫星的位置信息和/或卫星的速度信息。
  4. 根据权利要求1至3中任一项所述的方法,其中,所述同步辅助信息包括至少一组星历信息,所述至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,所述第一星历信息组与所述第一信息具有所述第一关联关系。
  5. 根据权利要求4所述的方法,其中,所述第一星历信息组包括多个第一星历信息,所述多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间PVT参数。
  6. 根据权利要求5所述的方法,其中,所述多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。
  7. 根据权利要求4至6中任一项所述的方法,其中,所述第一星历信息组中的至少一个第一星历信息对应的时间是根据网络设备发送所述同步辅助信息的下行时间单元确定的。
  8. 根据权利要求4至7中任一项所述的方法,其中,所述至少一组星历信息包括第二星历信息组,所述第二星历信息组包括至少一个第二星历信息,所述第二星历信息组与所述第一信息具有第二关联关系。
  9. 根据权利要求8所述的方法,其中,所述第二关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第二关联关系根据预定义规则获取。
  10. 根据权利要求8或9所述的方法,其中,所述第一星历信息组包括的至少一个第一星历信息和所述第二星历信息组包括的至少一个第二星历信息对应相同的时刻。
  11. 根据权利要求8或9所述的方法,其中,所述第一星历信息组包括的第一星历信息和所述第二星历信息组包括的第二星历信息对应不同的时刻。
  12. 根据权利要求8至11中任一项所述的方法,其中,所述第一星历信息对应第一星历信息格式,所述第二星历信息对应第二星历信息格式。
  13. 根据权利要求8至11中任一项所述的方法,其中,所述第一星历信息和所述第二星历信息对应相同的星历信息格式。
  14. 根据权利要求8至13中任一项所述的方法,其中,所述终端设备根据所述同步辅助信息获取同步,包括:
    所述终端设备根据所述第一星历信息组获取第一同步;和/或,
    所述终端设备根据所述第二星历信息组获取第二同步。
  15. 根据权利要求1至14中任一项所述的方法,其中,所述同步辅助信息通过***消息、切换命令、无线资源控制RRC信令、媒体接入控制控制单元MAC CE和下行控制信息DCI中的至少一种携带。
  16. 根据权利要求1至15中任一项所述的方法,其中,所述第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第一关联关系根据预定义规则获取。
  17. 根据权利要求15或16所述的方法,其中,所述***消息包括非地面网络NTN专用***消息。
  18. 根据权利要求1至17中任一项所述的方法,其中,所述终端设备根据所述同步辅助信息获取同步,包括:
    所述终端设备根据所述同步辅助信息获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
  19. 一种信息传输方法,包括:
    网络设备发送同步辅助信息,所述同步辅助信息与第一信息具有第一关联关系;
    其中,所述同步辅助信息用于使得终端设备获取同步。
  20. 根据权利要求19所述的方法,其中,所述第一信息包括以下至少之一:
    时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
  21. 根据权利要求19或20所述的方法,其中,所述同步辅助信息用于确定以下至少之一:
    星历信息、公共定时提前TA值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端设备位置信息、参考点信息;其中,所述星历信息用于确定卫星的位置信息和/或卫星的速度信息。
  22. 根据权利要求19至21中任一项所述的方法,其中,所述同步辅助信息包括至少一组星历信息,所述至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,所述第一星历信息组与所述第一信息具有所述第一关联关系。
  23. 根据权利要求22所述的方法,其中,所述第一星历信息组包括多个第一星历信息,所述多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间PVT参数。
  24. 根据权利要求23所述的方法,其中,所述多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。
  25. 根据权利要求22至24中任一项所述的方法,其中,所述第一星历信息组中的至少一个第一星历信息对应的时间是根据网络设备发送所述同步辅助信息的下行时间单元确定的。
  26. 根据权利要求22至25中任一项所述的方法,其中,所述至少一组星历信息包括第二星历信息组,所述第二星历信息组包括至少一个第二星历信息,所述第二星历信息组与所述第一信息具有第二关联关系。
  27. 根据权利要求26所述的方法,其中,所述第二关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第二关联关系根据预定义规则获取。
  28. 根据权利要求26或27所述的方法,其中,所述第一星历信息组包括的至少一个第一星历信息和所述第二星历信息组包括的至少一个第二星历信息对应相同的时刻。
  29. 根据权利要求26或27所述的方法,其中,所述第一星历信息组包括的第一星历信息和所述第二星历信息组包括的第二星历信息对应不同的时刻。
  30. 根据权利要求26至29中任一项所述的方法,其中,所述第一星历信息对应第一星历信息格式,所述第二星历信息对应第二星历信息格式。
  31. 根据权利要求26至29中任一项所述的方法,其中,所述第一星历信息和所述第二星历信息对应相同的星历信息格式。
  32. 根据权利要求26至31中任一项所述的方法,其中:
    所述第一星历信息组用于指示所述终端设备获取第一同步;和/或,
    所述第二星历信息组用于指示所述终端设备获取第二同步。
  33. 根据权利要求19至32中任一项所述的方法,其中,所述同步辅助信息通过***消息、切换命令、无线资源控制RRC信令、媒体接入控制控制单元MAC CE和下行控制信息DCI中的至少一种携带。
  34. 根据权利要求19至33中任一项所述的方法,其中,所述第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第一关联关系根据预定义规则获取。
  35. 根据权利要求33或34所述的方法,其中,所述***消息包括非地面网络NTN专用***消息。
  36. 根据权利要求19至35中任一项所述的方法,其中,所述同步辅助信息用于指示终端设备获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
  37. 一种终端设备,包括:
    接收单元,用于接收同步辅助信息,所述同步辅助信息与第一信息具有第一关联关系;
    同步单元,用于根据所述同步辅助信息获取同步。
  38. 根据权利要求37所述的终端设备,其中,所述第一信息包括以下至少之一:
    时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
  39. 根据权利要求37或38所述的终端设备,其中,所述同步辅助信息用于确定以下至少之一:
    星历信息、公共定时提前TA值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端设备位置信息、参考点信息;其中,所述星历信息用于确定卫星的位置信息和/或卫星的速度信息。
  40. 根据权利要求37至39中任一项所述的终端设备,其中,所述同步辅助信息包括至少一组星历信息,所述至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,所述第一星历信息组与所述第一信息具有所述第一关联关系。
  41. 根据权利要求40所述的终端设备,其中,所述第一星历信息组包括多个第一星历信息,所述多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间PVT参数。
  42. 根据权利要求41所述的终端设备,其中,所述多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。
  43. 根据权利要求40至42中任一项所述的终端设备,其中,所述第一星历信息组中的至少一个第 一星历信息对应的时间是根据网络设备发送所述同步辅助信息的下行时间单元确定的。
  44. 根据权利要求40至43中任一项所述的终端设备,其中,所述至少一组星历信息包括第二星历信息组,所述第二星历信息组包括至少一个第二星历信息,所述第二星历信息组与所述第一信息具有第二关联关系。
  45. 根据权利要求44所述的终端设备,其中,所述第二关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第二关联关系根据预定义规则获取。
  46. 根据权利要求44或45所述的终端设备,其中,所述第一星历信息组包括的至少一个第一星历信息和所述第二星历信息组包括的至少一个第二星历信息对应相同的时刻。
  47. 根据权利要求44或45所述的终端设备,其中,所述第一星历信息组包括的第一星历信息和所述第二星历信息组包括的第二星历信息对应不同的时刻。
  48. 根据权利要求44至47中任一项所述的终端设备,其中,所述第一星历信息对应第一星历信息格式,所述第二星历信息对应第二星历信息格式。
  49. 根据权利要求44至47中任一项所述的终端设备,其中,所述第一星历信息和所述第二星历信息对应相同的星历信息格式。
  50. 根据权利要求44至49中任一项所述的终端设备,其中,所述同步单元具体用于:
    根据所述第一星历信息组获取第一同步;和/或,
    根据所述第二星历信息组获取第二同步。
  51. 根据权利要求37至50中任一项所述的终端设备,其中,所述同步辅助信息通过***消息、切换命令、无线资源控制RRC信令、媒体接入控制控制单元MAC CE和下行控制信息DCI中的至少一种携带。
  52. 根据权利要求37至51中任一项所述的终端设备,其中,所述第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第一关联关系根据预定义规则获取。
  53. 根据权利要求51或52所述的终端设备,其中,所述***消息包括非地面网络NTN专用***消息。
  54. 根据权利要求37至53中任一项所述的终端设备,其中,所述终端设备根据所述同步辅助信息获取同步,包括:
    所述终端设备根据所述同步辅助信息获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
  55. 一种网络设备,包括:
    发送单元,用于发送同步辅助信息,所述同步辅助信息与第一信息具有第一关联关系;
    其中,所述同步辅助信息用于使得终端设备获取同步。
  56. 根据权利要求55所述的网络设备,其中,所述第一信息包括以下至少之一:
    时间信息、星历信息格式、组标识、参考信号索引、小区标识、天线极化模式、卫星标识、服务卫星、服务卫星的服务时长、即将提供服务的卫星、即将提供服务的卫星开始服务的时刻、即将提供服务的卫星的服务时长、即将不提供服务的卫星、即将不提供服务的卫星停止服务的时刻。
  57. 根据权利要求55或56所述的网络设备,其中,所述同步辅助信息用于确定以下至少之一:
    星历信息、公共定时提前TA值、公共TA值变化信息、公共频偏值、公共频偏值变化信息、终端设备位置信息、参考点信息;其中,所述星历信息用于确定卫星的位置信息和/或卫星的速度信息。
  58. 根据权利要求55至57中任一项所述的网络设备,其中,所述同步辅助信息包括至少一组星历信息,所述至少一组星历信息中的第一星历信息组包括至少一个第一星历信息,所述第一星历信息组与所述第一信息具有所述第一关联关系。
  59. 根据权利要求58所述的网络设备,其中,所述第一星历信息组包括多个第一星历信息,所述多个第一星历信息中的每个第一星历信息用于确定卫星的一个位置速度时间PVT参数。
  60. 根据权利要求59所述的网络设备,其中,所述多个第一星历信息顺序排列时对应的多个时间是单调递增的或单调递减的。
  61. 根据权利要求58至60中任一项所述的网络设备,其中,所述第一星历信息组中的至少一个第一星历信息对应的时间是根据网络设备发送所述同步辅助信息的下行时间单元确定的。
  62. 根据权利要求58至61中任一项所述的网络设备,其中,所述至少一组星历信息包括第二星历信息组,所述第二星历信息组包括至少一个第二星历信息,所述第二星历信息组与所述第一信息具有第二关联关系。
  63. 根据权利要求62所述的网络设备,其中,所述第二关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第二关联关系根据预定义规则获取。
  64. 根据权利要求62或63所述的网络设备,其中,所述第一星历信息组包括的至少一个第一星历信息和所述第二星历信息组包括的至少一个第二星历信息对应相同的时刻。
  65. 根据权利要求62或63所述的网络设备,其中,所述第一星历信息组包括的第一星历信息和所述第二星历信息组包括的第二星历信息对应不同的时刻。
  66. 根据权利要求62至65中任一项所述的网络设备,其中,所述第一星历信息对应第一星历信息格式,所述第二星历信息对应第二星历信息格式。
  67. 根据权利要求62至65中任一项所述的网络设备,其中,所述第一星历信息和所述第二星历信息对应相同的星历信息格式。
  68. 根据权利要求62至67中任一项所述的网络设备,其中:
    所述第一星历信息组用于指示所述终端设备获取第一同步;和/或,
    所述第二星历信息组用于指示所述终端设备获取第二同步。
  69. 根据权利要求55至68中任一项所述的网络设备,其中,所述同步辅助信息通过***消息、切换命令、无线资源控制RRC信令、媒体接入控制控制单元MAC CE和下行控制信息DCI中的至少一种携带。
  70. 根据权利要求55至69中任一项所述的网络设备,其中,所述第一关联关系通过***消息、切换命令、RRC信令、MAC CE和DCI中的至少一种获取;
    或者,所述第一关联关系根据预定义规则获取。
  71. 根据权利要求69或70所述的网络设备,其中,所述***消息包括非地面网络NTN专用***消息。
  72. 根据权利要求55至71中任一项所述的网络设备,其中,所述同步辅助信息用于指示终端设备获取以下至少一项:下行时间同步、下行频率同步、上行时间同步和上行频率同步。
  73. 一种终端设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以使所述终端设备执行如权利要求1至18中任一项所述的方法。
  74. 一种网络设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以使所述网络设备执行如权利要求19至36中任一项所述的方法。
  75. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至18中任一项所述的方法。
  76. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求19至36中任一项所述的方法。
  77. 一种计算机可读存储介质,用于存储计算机程序,当所述计算机程序被设备运行时使得所述设备执行如权利要求1至18中任一项所述的方法。
  78. 一种计算机可读存储介质,用于存储计算机程序,当所述计算机程序被设备运行时使得所述设备执行如权利要求19至36中任一项所述的方法。
  79. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至18中任一项所述的方法。
  80. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求19至36中任一项所述的方法。
  81. 一种计算机程序,所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法。
  82. 一种计算机程序,所述计算机程序使得计算机执行如权利要求19至36中任一项所述的方法。
PCT/CN2021/084164 2021-03-30 2021-03-30 信息传输方法、终端设备和网络设备 WO2022205014A1 (zh)

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