WO2023077460A1 - 信息传输方法、装置、通信设备和存储介质 - Google Patents
信息传输方法、装置、通信设备和存储介质 Download PDFInfo
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- WO2023077460A1 WO2023077460A1 PCT/CN2021/129102 CN2021129102W WO2023077460A1 WO 2023077460 A1 WO2023077460 A1 WO 2023077460A1 CN 2021129102 W CN2021129102 W CN 2021129102W WO 2023077460 A1 WO2023077460 A1 WO 2023077460A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
- H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Definitions
- the present application relates to the technical field of wireless communication but is not limited to the technical field of wireless communication, and in particular relates to an information transmission method, device, communication device and storage medium.
- Non-terrestrial networks are introduced in the fifth generation (5G, 5th Generation) cellular mobile communication system.
- 5G 5th Generation
- signal coverage is provided by satellites. Due to the relative movement between satellites and user equipment (UE, User Equipment), Doppler frequency shifts and signal transmission delays between satellites and UEs are caused.
- the UE needs to know the relevant position and motion information of the satellite, etc., and then compensate the transmission delay and/or frequency offset from the UE to the satellite.
- the embodiments of the present disclosure provide an information transmission method, device, communication device, and storage medium.
- an information transmission method which is applied to an access network device, and the method includes:
- the first information is for the predetermined cell
- the first information is for the cell group to which the predetermined cell belongs, wherein the cells in the same cell group are determined by the same satellite;
- the first information is for the TA group to which the predetermined cell belongs, and the cells in the same TA group are determined by the same satellite.
- the sending the first information includes:
- the sending the first information includes:
- the first information is further used to indicate the valid time of the satellite ephemeris and/or the valid time of the public TA.
- the sending the first information includes:
- the first information is sent within the valid time of the satellite ephemeris corresponding to the predetermined cell and/or the valid time of the public TA parameters.
- the sending the first information includes:
- Radio Resource Control Sending a radio resource control (RRC, Radio Resource Control) message including the first information.
- RRC Radio Resource Control
- the sending the RRC message including the first information includes:
- an information transmission method which is applied to a user equipment UE, and the method includes:
- the predetermined cell includes at least: a secondary cell and/or a target cell for the UE to switch over.
- the first information is for the predetermined cell
- the first information is further used to indicate the valid time of the satellite ephemeris and/or the valid time of the common TA parameter.
- the receiving the first information includes:
- the first information is received within the valid time of the satellite ephemeris corresponding to the predetermined cell and/or the valid time of the public TA parameters.
- the receiving the RRC message including the first information includes:
- an information transmission device which is applied to an access network device, and the device includes:
- the sending module is configured to send first information, wherein the first information is used to indicate the satellite ephemeris and/or timing advance public timing advance TA parameter corresponding to the predetermined cell, wherein the public TA parameter is used for
- the user equipment UE determines the public TA of the predetermined cell; wherein the predetermined cell includes at least: a secondary cell and/or a target cell for handover of the UE.
- the first information is for the cell group to which the predetermined cell belongs, wherein the cells in the same cell group are determined by the same satellite;
- the first information is for the TA group to which the predetermined cell belongs, and the cells in the same TA group are determined by the same satellite.
- the sending module is specifically configured as: at least one of the following:
- the sending module is specifically configured as:
- the first information is further used to indicate the valid time of the satellite ephemeris and/or the valid time of the public TA.
- the sending module is specifically configured as:
- the sending module is specifically configured as:
- the sending module is specifically configured as:
- an information transmission apparatus wherein, applied to a user equipment UE, the apparatus includes:
- the receiving module is configured to receive first information, where the first information is used to indicate the satellite ephemeris and/or public timing advance TA parameter corresponding to the predetermined cell, where the public TA parameter is used for UE to determine The public TA of the predetermined cell; wherein, the predetermined cell includes at least: a secondary cell and/or a target cell for handover of the UE.
- the first information is for the predetermined cell
- the first information is for the cell group to which the predetermined cell belongs, wherein the cells in the same cell group are determined by the same satellite;
- the receiving module is specifically configured as:
- the first information is received within the valid time of the satellite ephemeris corresponding to the predetermined cell and/or the valid time of the public TA parameters.
- the receiving module is specifically configured as:
- a communication device including a processor, a memory, and an executable program stored on the memory and capable of being run by the processor, wherein the processor runs the executable program
- the steps of the information transmission method described in the first aspect or the second aspect are executed when the program is executed.
- a storage medium on which an executable program is stored, wherein, when the executable program is executed by a processor, the information transmission method as described in the first aspect or the second aspect is implemented. A step of.
- the access network device sends the first information, where the first information is used to indicate the satellite ephemeris and/or timing corresponding to the predetermined cell Advance the public timing and advance the TA parameter, wherein the public TA parameter is used for the user equipment UE to determine the public TA of the predetermined cell; wherein the predetermined cell includes at least: a secondary cell and/or a target of the UE handover district.
- Fig. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment
- Fig. 2 is a schematic flowchart of an information transmission method according to an exemplary embodiment
- Fig. 3 is a schematic diagram of an NTN network structure shown according to an exemplary embodiment
- Fig. 4 is a schematic flowchart of another information transmission method according to an exemplary embodiment
- Fig. 5 is a block diagram of an information transmission device according to an exemplary embodiment
- Fig. 6 is a block diagram of another information transmission device according to an exemplary embodiment
- Fig. 7 is a block diagram showing an apparatus for information transmission according to an exemplary embodiment.
- first, second, third, etc. may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word “if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
- FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
- the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several terminals 11 and several base stations 12 .
- Station For example, Station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote terminal ( remote terminal), an access terminal (access terminal), a user device (user terminal), a user agent (user agent), a user device (user device), or a user terminal (user equipment, UE).
- the terminal 11 may also be a device of an unmanned aerial vehicle.
- the terminal 11 may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless communication device connected externally to the trip computer.
- the terminal 11 may also be a roadside device, for example, it may be a street lamp, a signal lamp, or other roadside devices with a wireless communication function.
- the base station 12 may be a network side device in a wireless communication system.
- the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication, 4G) system, also known as a Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as new radio (NR) system or 5G NR system.
- the wireless communication system may also be a next-generation system of the 5G system.
- the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
- the MTC system the MTC system.
- the base station 12 may be an evolved base station (eNB) adopted in a 4G system.
- the base station 12 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
- eNB evolved base station
- gNB base station
- the base station 12 adopts a centralized distributed architecture it generally includes a centralized unit (central unit, CU) and at least two distributed units (distributed unit, DU).
- the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link layer control protocol (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer protocol stack;
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC media access control
- a physical (Physical, PHY) layer protocol stack is set in the unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12 .
- a wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface.
- the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as
- the wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a technical standard of a next-generation mobile communication network based on 5G.
- an E2E (End to End, end-to-end) connection can also be established between the terminals 11.
- V2V vehicle to vehicle, vehicle-to-vehicle
- V2I vehicle to Infrastructure, vehicle-to-roadside equipment
- V2P vehicle to pedestrian, vehicle-to-person communication in vehicle to everything (V2X) communication Wait for the scene.
- the network management device 13 may be a core network device in the wireless communication system, for example, the network management device 13 may be a mobility management entity (Mobility Management Entity, MME).
- MME Mobility Management Entity
- the network management device can also be other core network devices, such as Serving GateWay (SGW), Public Data Network Gateway (Public Data Network GateWay, PGW), policy and charging rule functional unit (Policy and Charging Rules Function, PCRF) or Home Subscriber Server (Home Subscriber Server, HSS), etc.
- SGW Serving GateWay
- PGW Public Data Network Gateway
- PCRF Policy and Charging Rules Function
- HSS Home Subscriber Server
- Executors involved in the embodiments of the present disclosure include, but are not limited to: UEs such as mobile phone terminals in the NTN network, and network-side devices, such as access network devices such as satellites and base stations, and core networks.
- UEs such as mobile phone terminals in the NTN network
- network-side devices such as access network devices such as satellites and base stations, and core networks.
- the predetermined cell may be a cell formed by satellite signal coverage in the NTN network. There can be one or more predetermined cells.
- Cells in the NTN network may be formed by coverage of satellite beams in the NTN network, that is, cells are determined by satellites.
- the UE needs to know the ephemeris information of the satellite to compensate the transmission delay and/or frequency offset from the UE to the satellite side.
- the ephemeris information of the satellite can be sent by the base station to the UE.
- the satellite's ephemeris information can be the satellite's position and velocity information, or it can be the semi-major axis, ascending node, orbital inclination, etc.
- the UE needs to know the transmission delay from the satellite to the reference point. Since the transmission delay is the same for all UEs in the cell, it is called Common Timing Advance (Common TA, Common Timing Advance).
- the base station can send the common TA parameters to the UE, and the UE can determine the common TA according to the common TA parameters.
- a carrier aggregation (CA, carrier aggregation) method and/or a dual-link (DC, Dual-connectivity) method can be used to increase the communication rate.
- CA carrier aggregation
- DC dual-link
- the UE may be covered and served by multiple satellites. Each satellite may have transmission delay and/or frequency offset etc. Therefore, it is an urgent need for the UE to obtain relevant information for determining the transmission delay and/or frequency offset between each satellite and the UE, and then compensate the transmission delay and/or frequency offset of each satellite and reduce UE uplink out-of-sync. solved problem,.
- this exemplary embodiment provides an information transmission method, which can be applied to access network devices, including:
- Step 201 Send first information, wherein the first information is used to indicate the satellite ephemeris and/or timing advance public timing advance TA parameter corresponding to the predetermined cell, wherein the public TA parameter is used for the user equipment UE to determine the predetermined cell public TA; wherein, the predetermined cell includes at least: a secondary cell and/or a target cell for UE handover.
- Access network equipment includes, but is not limited to, NTN network access equipment, such as satellites and base stations.
- the UE may be a mobile phone terminal or the like that uses cellular mobile communication network technology for wireless communication.
- the method in the embodiment of the present invention can be used in, but not limited to, the NTN cellular mobile communication system.
- the satellite's ephemeris information can be the satellite's position and velocity information, or it can be the semi-major axis, ascending node, orbital inclination, etc.
- the UE may determine the transmission delay and/or frequency offset between the satellite and the UE based on the position and velocity information of the satellite, the position of the UE, and the like.
- the public TA may be the transmission delay from the satellite to the reference point, and the UE may determine the transmission delay from the satellite to the reference point based on the public TA parameters.
- the reference point may be a base station or other known point located on the ground. The UE can determine the transmission delay between the satellite and the UE based on the public TA, its own position, and the position of the reference point.
- the predetermined cell may be a cell formed by satellite signal coverage in the NTN network. There can be one or more predetermined cells.
- the predetermined cell may include a serving cell of the UE, a handover target cell, and the like.
- a serving cell may include a primary cell and a secondary cell.
- Primary cells and secondary cells can be generated by different satellites.
- Serving cells and target cells can also be generated by different satellites.
- the primary cell is a cell that works on the primary frequency band of the UE.
- the UE performs an initial connection establishment process on the primary cell, or starts a connection re-establishment process. This cell is indicated as the primary cell during the handover process.
- the secondary cell is a cell that works on the secondary frequency band of the UE.
- the SCell may be configured to provide additional radio resources. As shown in Figure 3, in the CA mode, the UE can be covered by the signals of two satellites at the same time. One satellite may provide the primary cell and another satellite may provide the secondary cell.
- the UE may acquire ephemeris information and/or public TA parameters of the serving cell, and then determine transmission delay and/or frequency offset of the serving cell.
- the base station may send the first information indicating ephemeris information and/or public TA parameters of the target cell to the UE through a satellite or the like. Based on the first information, the UE may acquire ephemeris information and/or public TA parameters of the target cell, and then determine transmission delay and/or frequency offset of the target cell.
- the access network device indicates the ephemeris information and/or public TA parameters of the predetermined cell to the UE by sending the first information, and then the UE can determine the transmission delay and/or frequency offset of the predetermined cell, which meets the requirements of the UE in multiple In the satellite cell coverage scenario, determine the transmission delay and/or frequency offset requirements of each cell, reduce the UE uplink out-of-sync situation, and improve the reliability of UE wireless communication under the NTN network.
- sending the first information includes: sending a radio resource control RRC message including the first information.
- the first information may be carried in an RRC message and sent to the UE.
- the first information may be carried in a dedicated RRC message, such as RRC reconfiguration (RRC Reconfiguration).
- the first information is for a predetermined cell.
- the first information may be for a predetermined cell, for example, the first information may be for a secondary cell.
- the UE may determine satellite ephemeris and/or public TA parameters of the secondary cell based on the first information.
- the first information may be for the secondary cell group, and the UE may determine satellite ephemeris and/or public TA parameters of each secondary cell in the secondary cell group based on the first information of the secondary cell group.
- Each secondary cell in the secondary cell group may belong to the same satellite, therefore, each secondary cell may share the same satellite ephemeris and/or common TA parameters.
- the TAG includes the secondary cell of the UE, then when the UE receives the first information for the TAG, it can acquire the satellite ephemeris and/or public TA parameters of the secondary cell.
- Whether the preset condition is met can be determined by the base station or the core network.
- a downlink message including the first information may be sent to the UE.
- the downlink message may carry the IE or predetermined field carrying the first information, otherwise, the downlink message may not carry the IE or predetermined field carrying the first information.
- Satisfying the preset conditions may include: the UE is configured with a predetermined cell, and/or the current radio access technology RAT type is a non-terrestrial network NTN, and/or the predetermined cell is determined by a satellite, and/or the satellite of the predetermined cell is determined to be asynchronous Orbit (NGSO, Non-GeoStationary Orbit) satellite, and/or UE handover to the target cell, etc.
- NGSO Non-GeoStationary Orbit
- orbiting NGSO satellites may include low earth orbit (LEO, Low Earth Orbit) satellites, and/or medium earth orbit satellites (MEO, Medium Earth Orbit), etc.
- the base station may IEs such as servingCellConfigcommon, servingCellConfig, and DownlinkConfigCommon carry fields that carry the first information.
- the first information is sent to the UE, which satisfies the communication requirements of the UE in the cell generated by the satellite, and improves communication reliability.
- the first information may not be sent to the UE, which may save signaling resources and reduce the situation that the UE receives invalid information.
- sending the first information includes: sending the first information in response to an uplink channel configuration with a predetermined cell.
- the transmission delay and/or frequency offset determined by the UE based on the first information may be used for uplink transmission compensation.
- the first information may be used to indicate the satellite ephemeris and/or public TA parameters to the UE. If the UE itself has satellite ephemeris and/or public TA parameters, then the first information may be used to update the satellite ephemeris and/or public TA parameters.
- the satellite ephemeris and/or public TA has a valid time.
- the valid time of the public TA parameter corresponds to the valid time of the public TA determined based on the public TA parameter, for example, the valid time of the public TA parameter is the valid time of the public TA determined based on the public TA parameter.
- the UE compensates for the uplink transmission based on the satellite ephemeris and/or public TA within a valid time period, which can reduce the risk of uplink out-of-sync.
- the UE compensates for the uplink transmission based on satellite ephemeris and/or public TA parameters outside the valid time, which increases the risk of uplink out-of-synchronization, and there is a risk of communication failure.
- the first information may be used to indicate to the UE the valid time of the satellite ephemeris and/or the valid time of the public TA parameters. If the UE itself has the valid time of the satellite ephemeris and/or the valid time of the public TA parameters, then the first information may be used to update the valid time of the satellite ephemeris and/or the valid time of the public TA parameters.
- the first information is sent within the valid time of the satellite ephemeris corresponding to the predetermined cell and/or the valid time of the public TA parameters.
- the access network device may send the first information to update the satellite ephemeris within the validity period of the satellite ephemeris of the predetermined cell, so as to reduce the situation that the UE is out of synchronization due to the failure of the satellite ephemeris when sending the first information.
- the access network device may send the first information at the first moment to indicate the public TA parameters to the UE, and the first information may include the valid time of the public TA parameters.
- the access network device may send the first information to update the public TA parameters and/or the valid time of the public TA parameters.
- the second moment is after the first moment.
- the access network device may send the first information at the first moment to indicate the satellite ephemeris to the UE, and the first information may include the valid time of the satellite ephemeris.
- the access network device may send the first information to update the satellite ephemeris and/or the valid time of the satellite ephemeris.
- the second moment is after the first moment.
- sending an RRC message including the first information includes:
- An RRC message including the first information is sent based on an update requirement of the UE.
- the RRC message containing the first information may be RRC dedicated signaling sent based on the request of the UE.
- the UE may send a request to the access network device based on its own communication status and/or mobility status.
- NTN network can be divided into regenerative payload (regenerative payload) and transparent payload (transparent payload) according to the payload type.
- the satellite has data processing and regeneration capabilities, such as a base station on the satellite or gNB-DU is located on the satellite; for the latter, the satellite does not process the received signal, but only completes the function of frequency conversion and/or signal amplification , signal processing and generation are done by base stations and/or ground stations located on the ground.
- the satellite-generated cells and RAT types mentioned in this solution are NTN, etc., which are applicable to regenerative satellites and transparent satellites.
- this exemplary embodiment provides an information transmission method, which can be applied to a UE, including:
- Step 401 Receive first information, wherein the first information is used to indicate the satellite ephemeris and/or public timing advance TA parameter corresponding to the predetermined cell, wherein the public TA parameter is used for the UE to determine the public TA of the predetermined cell;
- the predetermined cell includes at least: a secondary cell and/or a target cell for UE handover.
- Access network equipment includes, but is not limited to, NTN network access equipment, such as satellites and base stations.
- the UE may be a mobile phone terminal or the like that uses cellular mobile communication network technology for wireless communication.
- the method in the embodiment of the present invention can be used in, but not limited to, the NTN cellular mobile communication system.
- the satellite's ephemeris information can be the satellite's position and velocity information, or it can be the semi-major axis, ascending node, orbital inclination, etc.
- the UE may determine the transmission delay and/or frequency offset between the satellite and the UE based on the position and velocity information of the satellite, the position of the UE, and the like.
- the public TA may be the transmission delay from the satellite to the reference point, and the UE may determine the transmission delay from the satellite to the reference point based on the public TA parameters.
- the reference point may be a base station or other known point located on the ground. The UE can determine the transmission delay between the satellite and the UE based on the public TA, its own position, and the position of the reference point.
- the public TA parameter may include: the public TA, the rate of change of the public TA, and/or the second-order rate of change of the public TA, and the like.
- the UE may determine the common TA based on the common TA parameters.
- the predetermined cell may be a cell formed by satellite signal coverage in the NTN network. There can be one or more predetermined cells.
- the predetermined cell may include a serving cell of the UE, a handover target cell, and the like.
- a serving cell may include a primary cell and a secondary cell.
- Primary cells and secondary cells can be generated by different satellites.
- Serving cells and target cells can also be generated by different satellites.
- the primary cell is a cell that works on the primary frequency band of the UE.
- the UE performs an initial connection establishment process on the primary cell, or starts a connection re-establishment process. This cell is indicated as the primary cell during the handover process.
- the secondary cell is a cell that works on the secondary frequency band of the UE.
- the SCell may be configured to provide additional radio resources. As shown in Figure 3, in the CA mode, the UE can be covered by the signals of two satellites at the same time. One satellite may provide the primary cell and another satellite may provide the secondary cell.
- the UE may acquire ephemeris information and/or public TA parameters of the serving cell, and then determine transmission delay and/or frequency offset of the serving cell.
- the base station may send the first information indicating ephemeris information and/or public TA parameters of the target cell to the UE through a satellite or the like. Based on the first information, the UE may acquire ephemeris information and/or public TA parameters of the target cell, and then determine transmission delay and/or frequency offset of the target cell.
- the access network device indicates the ephemeris information and/or public TA parameters of the predetermined cell to the UE by sending the first information, and then the UE can determine the transmission delay and/or frequency offset of the predetermined cell, which meets the requirements of the UE in multiple In the satellite cell coverage scenario, determine the transmission delay and/or frequency offset requirements of each cell, reduce the UE uplink out-of-sync situation, and improve the reliability of UE wireless communication under the NTN network.
- receiving the first information includes:
- the first information may be carried in an RRC message and sent to the UE.
- the first information may be carried in a dedicated RRC message, such as RRC reconfiguration (RRC Reconfiguration).
- the first information is for a predetermined cell
- the first information may be for a predetermined cell, for example, the first information may be for a secondary cell.
- the UE may determine satellite ephemeris and/or public TA parameters of the secondary cell based on the first information.
- the first information is for the cell group to which the predetermined cell belongs, wherein the cells in the same cell group are determined by the same satellite.
- the cell group may include, but not limited to, a master cell group (MCG, Master Cell Group), a secondary cell group (SCG, Secondary Cell Group) and the like.
- MCG Master Cell Group
- SCG Secondary Cell Group
- the first information may be for the secondary cell group, and the UE may determine satellite ephemeris and/or public TA parameters of each secondary cell in the secondary cell group based on the first information of the secondary cell group.
- Each secondary cell in the secondary cell group may belong to the same satellite, therefore, each secondary cell may share the same satellite ephemeris and/or common TA parameters.
- the first information is for the timing advance group (TAG, Time Advance Group) to which the predetermined cell belongs, wherein the cells in the same TA group belong to the same satellite.
- TAG Tim Advance Group
- a TAG may include one or more cells, and the TAs of the cells in a TAG may be the same.
- the TAG may include, but is not limited to: a secondary timing advance group (sTAG) composed of secondary cells, and a primary timing advance group (pTAG) composed of primary cells.
- sTAG secondary timing advance group
- pTAG primary timing advance group
- the TAG includes the secondary cell of the UE, then when the UE receives the first information for the TAG, it can acquire the satellite ephemeris and/or public TA parameters of the secondary cell.
- the first information is sent by the access network device in response to meeting a preset condition.
- the preset condition may be determined based on whether the UE has a requirement for determining cell transmission delay and/or frequency offset.
- Whether the preset condition is met can be determined by the base station or the core network.
- a downlink message including the first information may be sent to the UE.
- the access network device sends a downlink message containing the first information in response to meeting the preset condition, including at least one of the following:
- the access network device sends a downlink message including the first information to the UE in response to configuring at least one predetermined cell for the UE;
- the access network device sends a downlink message including the first information in response to the current radio access technology RAT type being a non-terrestrial network NTN;
- the access network device sends a downlink message including the first information in response to the predetermined cell being determined by the satellite;
- the access network device sends a downlink message including the first information in response to determining that the satellite in the predetermined cell is a non-geosynchronous orbit NGSO satellite;
- the access network device sends a downlink message including the first information to the UE in response to the handover of the UE between predetermined cells.
- the first information may be carried by an information element (IE) of the downlink message.
- the first information may also be carried in predetermined fields (fields) of some IEs.
- the first information may be carried by IEs such as servingCellConfigcommon, and/or servingCellConfig, and/or DownlinkConfigCommon.
- the downlink message may carry the IE or predetermined field carrying the first information, otherwise, the downlink message may not carry the IE or predetermined field carrying the first information.
- Satisfying the preset conditions may include: the UE is configured with a predetermined cell, and/or the current radio access technology RAT type is a non-terrestrial network NTN, and/or the predetermined cell is determined by a satellite, and/or the satellite of the predetermined cell is determined to be asynchronous Orbit (NGSO, Non-GeoStationary Orbit) satellite, and/or UE handover to the target cell, etc.
- NGSO Non-GeoStationary Orbit
- orbiting NGSO satellites may include low earth orbit (LEO, Low Earth Orbit) satellites, and/or medium earth orbit satellites (MEO, Medium Earth Orbit), etc.
- determining the predetermined cell by a satellite may mean that the predetermined cell is generated by a satellite signal. That is, the predetermined cell is a cell covered by satellite signals.
- the base station may IEs such as servingCellConfigcommon, servingCellConfig, and DownlinkConfigCommon carry fields that carry the first information.
- the base station may carry a field carrying the first information in an IE such as DownlinkConfigCommon.
- the first information is sent to the UE, which satisfies the communication requirements of the UE in the cell generated by the satellite, and improves communication reliability.
- the first information may not be sent to the UE, which may save signaling resources and reduce the situation that the UE receives invalid information.
- the access network device sends the first information in response to having an uplink channel configuration of the secondary cell.
- the transmission delay and/or frequency offset determined by the UE based on the first information may be used for uplink transmission compensation.
- the UE may perform uplink transmission based on the configured uplink channel.
- the UE needs to determine the transmission delay and/or frequency offset, and then supplement the uplink transmission, so as to reduce the failure of the uplink transmission. Therefore, when there is an uplink channel configuration of the secondary cell, the access network device needs to send the first information to the UE, and the UE determines the transmission delay and/or frequency offset to improve transmission reliability.
- Uplink channel configuration includes, but is not limited to: random access channel (RACH, Random Access Channel) configuration, physical uplink control channel (PUCCH, Physical Uplink Control Channel) configuration, etc.
- RACH random access channel
- PUCCH Physical Uplink Control Channel
- the first information is used to update satellite ephemeris and/or public TA parameters.
- the first information may be used to indicate the satellite ephemeris and/or public TA parameters to the UE. If the UE itself has satellite ephemeris and/or public TA parameters, then the first information may be used to update the satellite ephemeris and/or public TA parameters.
- the access network equipment needs to update the satellite ephemeris and/or public TA parameters.
- the access network device may send the first information to the UE for updating satellite ephemeris and/or public TA parameters.
- the first information is also used to indicate the valid time of the satellite ephemeris and/or the valid time of the public TA parameters.
- the satellite ephemeris and/or public TA has a valid time.
- the valid time of the public TA parameter corresponds to the valid time of the public TA determined based on the public TA parameter, for example, the valid time of the public TA parameter is the valid time of the public TA determined based on the public TA parameter.
- the UE compensates for the uplink transmission based on the satellite ephemeris and/or public TA within a valid time period, which can reduce the risk of uplink out-of-sync.
- the UE compensates for the uplink transmission based on the satellite ephemeris and/or public TA outside the valid time, which increases the risk of uplink out-of-sync, and there is a risk of communication failure.
- the first information may use effective start time and effective end time, or may indicate effective time by means of effective start time and effective time duration.
- the first information is used to update the valid time of the satellite ephemeris and/or the valid time of the public TA parameters.
- the first information may be used to indicate to the UE the valid time of the satellite ephemeris and/or the valid time of the public TA parameters. If the UE itself has the valid time of the satellite ephemeris and/or the valid time of the public TA parameters, then the first information may be used to update the valid time of the satellite ephemeris and/or the valid time of the public TA parameters.
- the UE can keep using the satellite ephemeris and/or public TA within a valid time period, thereby improving communication reliability.
- receiving the first information includes:
- the first information is received within the valid time of the satellite ephemeris corresponding to the predetermined cell and/or the valid time of the public TA parameters.
- the access network device may send the first information to update the satellite ephemeris within the validity period of the satellite ephemeris of the predetermined cell, so as to reduce the situation that the UE is out of synchronization due to the failure of the satellite ephemeris when sending the first information.
- the access network device may send a message to update the public TA parameters within the validity period of the public TA of the predetermined cell, so as to reduce the situation that the UE is out of uplink due to the failure of the public TA when sending the first message.
- the access network device may send the first information at the first moment to indicate the public TA parameters to the UE, and the first information may include the valid time of the public TA parameters.
- the access network device may send the first information to update the public TA parameters and/or the valid time of the public TA parameters.
- the second moment is after the first moment.
- the access network device may send the first information at the first moment to indicate the satellite ephemeris to the UE, and the first information may include the valid time of the satellite ephemeris.
- the access network device may send the first information to update the satellite ephemeris and/or the valid time of the satellite ephemeris.
- the second moment is after the first moment.
- receiving the RRC message including the first information includes:
- An RRC message including the first information sent based on the update requirement of the UE is received.
- the RRC message containing the first information may be RRC dedicated signaling sent based on the request of the UE.
- the UE may send a request to the access network device based on its own communication status and/or mobility status.
- NTN network can be divided into regenerative payload (regenerative payload) and transparent payload (transparent payload) according to the payload type.
- the satellite has data processing and regeneration capabilities, such as a base station on the satellite or gNB-DU is located on the satellite; for the latter, the satellite does not process the received signal, but only completes the function of frequency conversion and/or signal amplification , signal processing and generation are done by base stations and/or ground stations located on the ground.
- the satellite-generated cells and RAT types mentioned in this solution are NTN, etc., which are applicable to regenerative satellites and transparent satellites.
- Satellite ephemeris and/or public TA parameter configuration can be for cell/cell group/TA group
- the satellite ephemeris and/or public TA parameters can be those of the secondary cell
- these IE/fields may appear when the secondary cell (scell addition) is added, and the IEs may include: servingCellConfigcommon, servingCellConfig, DownlinkConfigCommon, etc. These IE/fields can also appear when the RAT type is NTN/the serving cell type is a satellite serving cell/the satellite is LEO.
- these IE/fields can appear when adding a serving cell addition.
- IE can include: DownlinkConfigCommon. These IEs/fields can also appear when the RAT type is NTN/the serving cell type is satellite serving cell/satellite is LEO.
- the above Scell also has at least uplink channel configuration, such as RACH, PUCCH and so on.
- the satellite ephemeris and/or public TA parameters of the secondary cell may be carried in the UE-specific RRC message.
- the UE can receive the update of the satellite ephemeris and/or public TA parameters within the validity timer of the satellite ephemeris and/or public TA parameters. Satellite ephemeris and/or public TA parameters may be updated using dedicated RRC messages sent based on UE requirements.
- Example 1 The satellite ephemeris and/or public TA parameters of the serving cell are included in ServingCellConfigCommon for transmission
- the information element (IE, Information Element) ServingCellConfigCommon is used to configure the cell-specific parameters of the UE serving cell.
- This IE contains parameters that the UE usually obtains from the SSB, MIB or SIB when accessing a cell from an idle state.
- the network uses this IE to provide specific parameters in dedicated signaling when configuring an SCell or an additional cell group (SCG) for the UE.
- This IE also provides specific parameters for SpCells (MCG and SCG) at synchronous reconfiguration.
- the following signaling format may be used to carry satellite ephemeris and/or public TA parameters:
- Satellite ephemeris means: satellite ephemeris.
- OPTIONAL, --Cond NTN means: Satellite ephemeris appears in ServingCellConfigCommon when the RAT type is NTN.
- the base station can configure ServingCellConfigCommon for each cell.
- the satellite ephemeris and/or public TA parameters in ServingCellConfigCommon may appear when adding a secondary cell (scell addition), or may appear when updating the satellite ephemeris and/or public TA parameters of the Scell.
- Example 2 The satellite ephemeris and/or common TA parameters of the serving cell are included in DownlinkConfigCommon, which may also exist when the satellite ephemeris needs to be updated.
- the following signaling format may be used to carry satellite ephemeris and/or public TA parameters:
- Satellite ephemeris means: satellite ephemeris.
- OPTIONAL, --Cond NTN means: Satellite ephemeris appears in DownlinkConfigCommon when the RAT type is NTN.
- the conditions for its appearance may include: when switching (HO, handover) and adding a serving cell, its signaling format is as follows:
- OPTIONAL,--Cond HOAndServCellAdd means: when switching (HO, handover) and adding a serving cell, bearer DownlinkConfigCommon appears.
- Example 3 In the information element UplinkConfigCommon, the following signaling format can be used to carry satellite ephemeris and/or common TA parameters:
- Common TA, Common TA drift, and Common TA drift variation represent: different public TA parameters.
- OPTIONAL,--Cond NTN means: when the RAT type is NTN, the public TA parameters appear in UplinkConfigCommon.
- the information element ServingCellConfig is used to configure (add or modify) a serving cell for the UE, and the serving cell may be a SpCell or SCell of the MCG or SCG.
- the parameters here are mainly UE-specific, but partly also cell-specific (eg in the additionally configured bandwidth part). Reconfiguration between PUCCH and PUCCHless SCell only supports publishing and adding using SCell.
- the first information is for the TA group to which the predetermined cell belongs, and the cells in the same TA group are determined by the same satellite.
- the first information is further used to indicate the valid time of the satellite ephemeris and/or the valid time of the public TA.
- the sending module 110 is specifically configured as:
- the first information is sent within the valid time of the satellite ephemeris corresponding to the predetermined cell and/or the valid time of the public TA parameters.
- the sending module 110 is specifically configured as:
- the embodiment of the present invention also provides an information transmission device, which is applied to a UE of cellular mobile wireless communication, as shown in FIG. 6, wherein the device 200 includes:
- the receiving module 210 is configured to receive first information, wherein the first information is used to indicate satellite ephemeris and/or public timing advance TA parameters corresponding to a predetermined cell, wherein the public TA parameters are used for UE Determine the public TA of the predetermined cell; wherein the predetermined cell at least includes: a secondary cell and/or a target cell for handover of the UE.
- the first information is for the cell group to which the predetermined cell belongs, wherein the cells in the same cell group are determined by the same satellite;
- the first information is for the TA group to which the predetermined cell belongs, and the cells in the same TA group are determined by the same satellite.
- the first information is further used to indicate the valid time of the satellite ephemeris and/or the valid time of the common TA parameter.
- the receiving module 210 is specifically configured as:
- the first information is received within the valid time of the satellite ephemeris corresponding to the predetermined cell and/or the valid time of the public TA parameters.
- the receiving module 210 is specifically configured as:
- device 3000 may include one or more of the following components: processing component 3002, memory 3004, power supply component 3006, multimedia component 3008, audio component 3010, input/output (I/O) interface 3012, sensor component 3014, and Communication component 3016.
- Sensor assembly 3014 includes one or more sensors for providing status assessments of various aspects of device 3000 .
- the sensor component 3014 can detect the open/closed state of the device 3000, the relative positioning of components such as the display and the keypad of the device 3000, the sensor component 3014 can also detect a change in the position of the device 3000 or a component of the device 3000, a user Presence or absence of contact with device 3000 , device 3000 orientation or acceleration/deceleration and temperature change of device 3000 .
- Sensor assembly 3014 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
- the sensor assembly 3014 may also include light sensors, such as CMOS or CCD image sensors, for use in imaging applications.
- the sensor component 3014 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
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Abstract
Description
Claims (32)
- 一种信息传输方法,其中,应用于接入网设备,所述方法包括:发送第一信息,其中,所述第一信息,用于指示预定小区对应的卫星星历和/或定时提前公共定时提前TA参数,其中,所述公共TA参数,用于供用户设备UE确定所述预定小区的公共TA;其中,所述预定小区至少包括:辅小区和/或所述UE切换的目标小区。
- 根据权利要求1所述的方法,其中,所述第一信息是针对所述预定小区的;或者,所述第一信息是针对所述预定小区所属小区组的,其中,同一所述小区组中的小区由同一卫星确定;或者,所述第一信息是针对所述预定小区所属TA组的,其中,同一所述TA组中的小区由同一卫星确定。
- 根据权利要求1所述的方法,其中,所述发送第一信息,包括:响应于满足预设条件,发送包含所述第一信息的下行消息。
- 根据权利要求3所述的方法,其中,所述响应于满足预设条件,发送包含所述第一信息的下行消息,包括至少以下之一:响应于为UE配置有至少一个所述预定小区,向所述UE发送包含所述第一信息的下行消息;响应于当前无线电接入技术RAT类型为非地面网络NTN,发送包含所述第一信息的下行消息;响应于所述预定小区由卫星确定,发送包含所述第一信息的下行消息;响应于确定所述预定小区的卫星为非同步轨道NGSO卫星,发送包含所述第一信息的下行消息;响应于UE在所述预定小区之间进行切换,向所述UE发送包含所述第一信息的下行消息。
- 根据权利要求1所述的方法,其中,所述发送第一信息,包括:响应于具有所述预定小区的上行信道配置,发送所述第一信息。
- 根据权利要求1所述的方法,其中,所述第一信息,还用于指示所述卫星星历的有效时间,和/或所述公共TA的有效时间。
- 根据权利要求1所述的方法,其中,所述发送第一信息,包括:在所述预定小区对应的卫星星历的有效时间内和/或公共TA参数的有效时间内,发送所述第一信息。
- 根据权利要求1至7任一项所述的方法,其中,所述发送第一信息,包括:发送包含所述第一信息的无线资源控制RRC消息。
- 根据权利要求8所述的方法,其中,所述发送包含所述第一信息的RRC消息,包括:基于UE的更新需求,发送包含所述第一信息的所述RRC消息。
- 一种信息传输方法,其中,应用于用户设备UE,所述方法包括:接收第一信息,其中,所述第一信息,用于指示预定小区对应的卫星星历和/或公共定时提前TA参数,其中,所述公共TA参数,用于供UE确定所述预定小区的公共TA;其中,所述预定小区至少包括:辅小区和/或所述UE切换的目标小区。
- 根据权利要求10所述的方法,其中,所述第一信息是针对所述预定小区的;或者,所述第一信息是针对所述预定小区所属小区组的,其中,同一所述小 区组中的小区由同一卫星确定;或者,所述第一信息是针对所述预定小区所属TA组的,其中,同一所述TA组中的小区由同一卫星确定。
- 根据权利要求10所述的方法,其中,所述第一信息,还用于指示所述卫星星历的有效时间,和/或所述公共TA参数的有效时间。
- 根据权利要求10所述的方法,其中,所述接收第一信息,包括:在所述预定小区对应的卫星星历的有效时间内和/或公共TA参数的有效时间内,接收所述第一信息。
- 根据权利要求10至13任一项所述的方法,其中,所述接收第一信息,包括:接收包含所述第一信息的无线资源控制RRC消息。
- 根据权利要求14所述的方法,其中,所述接收包含所述第一信息的RRC消息,包括:接收基于所述UE的更新需求发送的包含所述第一信息的所述RRC消息。
- 一种信息传输装置,其中,应用于接入网设备,所述装置包括:发送模块,配置为发送第一信息,其中,所述第一信息,用于指示预定小区对应的卫星星历和/或定时提前公共定时提前TA参数,其中,所述公共TA参数,用于供用户设备UE确定所述预定小区的公共TA;其中,所述预定小区至少包括:辅小区和/或所述UE切换的目标小区。
- 根据权利要求16所述的装置,其中,所述第一信息是针对所述预定小区的;或者,所述第一信息是针对所述预定小区所属小区组的,其中,同一所述小区组中的小区由同一卫星确定;或者,所述第一信息是针对所述预定小区所属TA组的,其中,同一所述TA组中的小区由同一卫星确定。
- 根据权利要求16所述的装置,其中,所述发送模块,具体配置为:响应于满足预设条件,发送包含所述第一信息的下行消息。
- 根据权利要求18所述的装置,其中,所述发送模块,具体配置为:至少以下之一:响应于为UE配置有至少一个所述预定小区,向所述UE发送包含所述第一信息的下行消息;响应于当前无线电接入技术RAT类型为非地面网络NTN,发送包含所述第一信息的下行消息;响应于所述预定小区由卫星确定,发送包含所述第一信息的下行消息;响应于确定所述预定小区的卫星为非同步轨道NGSO卫星,发送包含所述第一信息的下行消息;响应于UE在所述预定小区之间进行切换,向所述UE发送包含所述第一信息的下行消息。
- 根据权利要求16所述的装置,其中,所述发送模块,具体配置为:响应于具有所述预定小区的上行信道配置,发送所述第一信息。
- 根据权利要求16所述的装置,其中,所述第一信息,还用于指示所述卫星星历的有效时间,和/或所述公共TA的有效时间。
- 根据权利要求16所述的装置,其中,所述发送模块,具体配置为:在所述预定小区对应的卫星星历的有效时间内和/或公共TA参数的有 效时间内,发送所述第一信息。
- 根据权利要求16至22任一项所述的装置,其中,所述发送模块,具体配置为:发送包含所述第一信息的无线资源控制RRC消息。
- 根据权利要求23所述的装置,其中,所述发送模块,具体配置为:基于UE的更新需求,发送包含所述第一信息的所述RRC消息。
- 一种信息传输装置,其中,应用于用户设备UE,所述装置包括:接收模块,配置为接收第一信息,其中,所述第一信息,用于指示预定小区对应的卫星星历和/或公共定时提前TA参数,其中,所述公共TA参数,用于供UE确定所述预定小区的公共TA;其中,所述预定小区至少包括:辅小区和/或所述UE切换的目标小区。
- 根据权利要求25所述的装置,其中,所述第一信息是针对所述预定小区的;或者,所述第一信息是针对所述预定小区所属小区组的,其中,同一所述小区组中的小区由同一卫星确定;或者,所述第一信息是针对所述预定小区所属TA组的,其中,同一所述TA组中的小区由同一卫星确定。
- 根据权利要求25所述的装置,其中,所述第一信息,还用于指示所述卫星星历的有效时间,和/或所述公共TA参数的有效时间。
- 根据权利要求25所述的装置,其中,所述接收模块,具体配置为:在所述预定小区对应的卫星星历的有效时间内和/或公共TA参数的有效时间内,接收所述第一信息。
- 根据权利要求25至28任一项所述的装置,其中,所述接收模块,具体配置为:接收包含所述第一信息的无线资源控制RRC消息。
- 根据权利要求29所述的装置,其中,所述接收模块,具体配置为:接收基于所述UE的更新需求发送的包含所述第一信息的所述RRC消息。
- 一种通信设备装置,包括处理器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序,其中,所述处理器运行所述可执行程序时执行如权利要求1至9任或10至15任一项所述信息传输方法的步骤。
- 一种存储介质,其上存储有可执行程序,其中,所述可执行程序被处理器执行时实现如权利要求1至9或10至15任一项所述信息传输方法的步骤。
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| CN202180003787.5A CN114175715B (zh) | 2021-11-05 | 2021-11-05 | 信息传输方法、装置、通信设备和存储介质 |
| EP21962973.0A EP4429337A4 (en) | 2021-11-05 | 2021-11-05 | INFORMATION TRANSMISSION METHOD AND DEVICE, COMMUNICATION DEVICE AND STORAGE MEDIUM |
| US18/707,370 US20250193819A1 (en) | 2021-11-05 | 2021-11-05 | Information transmission method and apparatus, communication device, and storage medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4429337A4 (en) | 2025-01-22 |
| CN114175715B (zh) | 2024-04-26 |
| CN114175715A (zh) | 2022-03-11 |
| EP4429337A1 (en) | 2024-09-11 |
| US20250193819A1 (en) | 2025-06-12 |
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