WO2022121710A1 - Procédés et appareils de détermination du nombre de transmissions répétées, terminal et dispositif de réseau - Google Patents

Procédés et appareils de détermination du nombre de transmissions répétées, terminal et dispositif de réseau Download PDF

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Publication number
WO2022121710A1
WO2022121710A1 PCT/CN2021/133729 CN2021133729W WO2022121710A1 WO 2022121710 A1 WO2022121710 A1 WO 2022121710A1 CN 2021133729 W CN2021133729 W CN 2021133729W WO 2022121710 A1 WO2022121710 A1 WO 2022121710A1
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Prior art keywords
information
terminal
value
configuration information
repeated transmissions
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PCT/CN2021/133729
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English (en)
Chinese (zh)
Inventor
雷珍珠
赵思聪
周化雨
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展讯半导体(南京)有限公司
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Publication of WO2022121710A1 publication Critical patent/WO2022121710A1/fr

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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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and device, a terminal, and a network device for determining the number of repeated transmissions.
  • the 3rd Generation Partnership Project (3GPP) is developing protocol standards for non-terrestrial network (NTN) communications, and the protocol standards mainly involve spaceborne vehicles or airborne equipment.
  • airborne vehicle such as geostationary earth orbit satellites, low earth orbit satellites, highly elliptical orbit satellites, high-altitude platform stations (HAPS), etc.
  • Satellites in an NTN communication system typically generate beams (or beam footprints) or cells on the ground. Since the satellite will move along a fixed orbit, the propagation distance (or propagation delay) between the terminal located in the beam or cell and the satellite will change with the position of the satellite, resulting in the When the terminal transmits data, the number of repeated transmissions of the data channel needs to be adjusted accordingly as the position of the satellite changes. However, due to the regularity and periodicity of the orbit of the satellite, the propagation distance between the terminal and the satellite is also regular and periodic. Therefore, in the NTN communication system, it may not be necessary to pass downlink control information (DCI). ) to dynamically indicate the number of repeated transmissions of the data channel to reduce the bit size of the DCI. In this case, how to determine the repeated transmission times of the data channel needs further research.
  • DCI downlink control information
  • Embodiments of the present application provide a method and device, a terminal, and a network device for determining the number of repeated transmissions, so as to realize that the number of repeated transmissions of a data channel between the network device and the terminal can be automatically adjusted with the constant change of the propagation distance between the terminal and the satellite. Adapt and adjust, and always ensure that the network device and the terminal reach an agreement on the number of repeated transmissions of the data channel.
  • an embodiment of the present application provides a method for determining the number of repeated transmissions, which is applied to a terminal in a non-terrestrial network communication system, where the non-terrestrial network communication system includes the terminal and a network device; the method includes:
  • the current number of repeated transmissions of the data channel is determined according to the first configuration information.
  • an embodiment of the present application provides an apparatus for determining the number of repeated transmissions, which is applied to a terminal in a non-terrestrial network communication system, where the non-terrestrial network system includes the terminal and network equipment; the apparatus includes a processing unit and a communication unit, the processing unit is used to:
  • the current number of repeated transmissions of the data channel is determined according to the first configuration information.
  • an embodiment of the present application provides a device for determining the number of repeated transmissions, which is applied to a network device in a non-terrestrial network communication system, where the non-terrestrial network communication system includes the network device and a terminal; the device includes a processing unit and a communication unit, the processing unit is used to:
  • an embodiment of the present application provides a terminal, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured by the The program is executed by the processor, and the program includes instructions for executing steps in any of the methods in the first aspect of the embodiments of the present application.
  • embodiments of the present application provide a network device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured by Executed by the processor, the program includes instructions for executing steps in any of the methods in the second aspect of the embodiments of the present application.
  • an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the first aspect or the second aspect of the embodiment of the present application Some or all of the steps described in any method.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to execute the implementation of the present application Examples include some or all of the steps described in any of the methods of the first aspect or the second aspect.
  • an embodiment of the present application provides a computer program, wherein the computer program is operable to cause a computer to execute part or all of the steps described in any of the methods in the first aspect or the second aspect of the embodiments of the present application .
  • the computer program may be a software installation package.
  • the network device in the non-terrestrial network communication system sends the first configuration information to the terminal in the non-terrestrial network communication system; then, the terminal obtains the first configuration information, and according to the first configuration information
  • the configuration information determines the current number of repeated transmissions for the data channel. Since the first configuration information is configured by the network, it is beneficial to realize that the number of repeated transmissions of the data channel between the network device and the terminal is adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, And always ensure that the network device and the terminal reach an agreement on the number of repeated transmissions of the data channel.
  • FIG. 1 is a schematic diagram of the architecture of a non-terrestrial network communication system provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of the architecture of a transparent satellite communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of comparing signal reception quality between a terrestrial network communication system and a non-terrestrial network communication system provided by an embodiment of the present application;
  • FIG. 4 is a schematic structural diagram of an earth fixed beam scenario of a non-terrestrial network communication system provided by an embodiment of the present application;
  • FIG. 5 is a schematic diagram of an architecture comparison of a non-terrestrial network communication system provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method for determining the number of repeated transmissions provided by an embodiment of the present application
  • FIG. 7 is a schematic flowchart of another method for determining the number of repeated transmissions provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a mapping relationship between multiple RUR transmission resource blocks and multiple repeated transmission times provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another method for determining the number of repeated transmissions provided by an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of another method for determining the number of repeated transmissions provided by an embodiment of the present application.
  • FIG. 12 is a schematic flowchart of another method for determining the number of repeated transmissions provided by an embodiment of the present application.
  • FIG. 13 is a block diagram of functional units of a device for determining the number of repeated transmissions provided by an embodiment of the present application.
  • FIG. 14 is a block diagram of functional units of another apparatus for determining the number of repeated transmissions provided by an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the non-terrestrial network communication system 10 may include a terminal 110 , an intra-cell reference point 120 , a satellite 130 , a non-terrestrial network gateway (NTN gateway) 140 and a network device 150 .
  • the terminal 110, the non-terrestrial network gateway 140 and the network device 150 may be located on the earth's surface, while the satellite 130 is located in the earth's orbit.
  • the satellites 130 can provide communication services to the geographic area covered by the signal, and can communicate with the terminals 110 located within the signal coverage area.
  • the terminal 110 is located in a certain cell, and the cell includes an intra-cell reference point 120 .
  • the wireless communication link between the terminal 110 and the satellite 130 is called a service link
  • the wireless communication link between the satellite 130 and the non-terrestrial network gateway (NTN gateway) 140 is called a supply link ( feeder link).
  • NTN gateway non-terrestrial network gateway
  • the network device 150 may be integrated into the same device, or may be separate devices, which are not specifically limited.
  • the terminal in this embodiment of the present application may be a user equipment (user equipment, UE), an access terminal, 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 smart Terminal, wireless communication device, user agent or user equipment.
  • UE user equipment
  • an access terminal 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 smart Terminal, wireless communication device, user agent or user equipment.
  • the terminal may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication function handheld devices, computing devices or other processing devices connected to wireless modems, relay devices, in-vehicle devices, wearable devices, terminals in next-generation communication systems such as NR networks or future evolution of public land mobile communication networks network, PLMN), etc., which are not specifically limited.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle; can be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal may be a mobile phone (mobile phone), a tablet computer, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control (industrial control) wireless terminal equipment in , autonomous driving (self driving) in-vehicle equipment, remote medical (remote medical) wireless terminal equipment, smart grid (smart grid) wireless terminal equipment, transportation safety (transportation safety) in Wireless terminal equipment, wireless terminal equipment in a smart city or wireless terminal equipment in a smart home, etc.
  • VR virtual reality
  • AR augmented reality
  • industrial control wireless terminal equipment in autonomous driving (self driving) in-vehicle equipment
  • remote medical remote medical
  • smart grid smart grid wireless terminal equipment
  • transportation safety transportation safety
  • the satellite in the embodiment of the present application may be a spacecraft carrying a bent pipe payload or a regenerative payload signal transmitter, which usually operates at an altitude between 300 and 1500 km.
  • Low Earth Orbit (LEO) Low Earth Orbit (LEO) at altitudes between 7000 and 25000km
  • High elliptical orbit (HEO) at altitudes between 50,000km.
  • the satellites may be LEO satellites, MEO satellites, GEO satellites, or HEO satellites, etc. according to different orbital altitudes.
  • the signals sent by the satellites in the embodiments of the present application generally generate one or more beams (beams, or referred to as “given service areas”) on a given service area (given service area) bounded by its field of view (field of view).
  • beams beams, or referred to as “given service areas”
  • given service area bounded by its field of view (field of view).
  • beam footprint the shape of a beam on the ground can be elliptical, and the field of view of the satellite depends on the antenna and the minimum elevation angle, etc.
  • the non-terrestrial network gateway in this embodiment of the present application may be an earth station or gateway located on the earth's surface, and can provide enough radio frequency (RF) power and RF sensitivity to connect satellites.
  • the non-terrestrial network gateway may be a transport network layer (TNL) node.
  • RF radio frequency
  • TNL transport network layer
  • the network device in the embodiment of the present application may be a base station (base transceiver station) in a global system of mobile communication (GSM) communication system or a code division multiple access (code division multiple access, CDMA) communication system.
  • BTS base stations
  • nodeB, NB wideband code division multiple access
  • WCDMA wideband code division multiple access
  • evolutional node B, eNB in long term evolution (long term evolution, LTE) communication systems or eNodeB) or a base station (gNB) in a new radio (NR) communication system.
  • the network device may also be an access point (access point, AP) in a wireless local area network (WLAN), a relay station, a network device in a future evolved PLMN network, or a network device in an NTN communication system, and the like.
  • WLAN wireless local area network
  • relay station a network device in a future evolved PLMN network
  • NTN communication system and the like.
  • the gNB may include a centralized unit (CU) and a distributed unit (DU), and the gNB may also include an active antenna unit (AAU) .
  • the CU can implement part of the functions of the gNB, and the DU can also implement part of the functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, implementing the functions of the radio resource control (RRC) layer and the packet data convergence protocol (PDCP) layer;
  • the DU is responsible for processing physical layer protocols and real-time services.
  • RLC radio link control
  • MAC medium access control
  • PHY physical
  • the AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, the higher-layer signaling (such as the RRC layer signaling) can be considered to be sent by the DU, or by the DU+AAU sent.
  • the network device may include one or more devices of a CU node, a DU node, and an AAU node.
  • the CU may be divided into network devices in an access network (radio access network, RAN), and the CU may also be divided into network devices in a core network (core network, CN), which is not specifically limited.
  • the difference in propagation distance between terminals (such as UE) in different geographical locations and the satellite is small ( That is, the path loss difference of signals corresponding to terminals in different geographical locations within the coverage of the same beam/cell is small), which in turn leads to the signal reception quality (including the terminal) corresponding to terminals in different geographical locations within the coverage of the same beam/cell
  • the difference of the downlink reception quality of the base station or the uplink reception quality of the base station is very small, as shown in Figure 3.
  • the beams (or beam footprints) or cells generated by some satellites (such as LEO satellites or GEO satellites) on the ground do not will move on the ground as the satellite moves in its orbit, as shown in Figure 4.
  • the beam 420 generated on the ground by the satellite 410 does not move with the movement of the satellite 410, but assumes a fixed position.
  • the architecture of the NTN communication system in the embodiment of the present application mainly includes an NTN communication architecture (ie, a transparent forwarding mode) with a transparent satellite (or called bent pipe payload) and a regenerative satellite (regenerative satellite). ) of the NTN communication architecture (i.e. regenerative signal mode), see Figure 5.
  • NTN communication architecture i.e. regenerative signal mode
  • FIG. 5 illustrates the NTN communication architecture with transparent satellites
  • FIG. 5 illustrates the NTN communication architecture with regenerative satellites.
  • the satellite 510 in the transparent repeater mode generates at least one beam 520 on the ground, and the at least one beam 520 can form a cell on the ground.
  • Timing advance (TA) in NTN communication system 4. Timing advance (TA) in NTN communication system
  • the propagation delay (or propagation distance) between the terminal and the satellite and the propagation between the satellite and the network device (or non-terrestrial network gateway)
  • the time delay (or propagation distance) changes rapidly with the constant motion of the satellite.
  • the terminal needs to perform TA pre-compensation (ie, TA adjustment).
  • a terminal in an idle (idle) state or in an inactive state (inactive) needs to enter a connected state through a random access procedure before sending data.
  • This idle/inactive data transmission mechanism will increase RRC signaling overhead, UE energy consumption, or data transmission delay.
  • the processing mechanism in the existing narrowband internet of things (NB-IoT) or enhanced machine-type communication (eMTC) is that the network The terminal configures a dedicated periodic PUR, so that the terminal can send uplink data through the PUR.
  • NB-IoT/eMTC adopts the technology of repeated transmission.
  • the maximum number of repeated transmissions for downlink transmission is 2048 times
  • the maximum number of repeated transmissions for uplink transmission is 128 times.
  • the number of repeated transmissions of the physical downlink share channel (PDSCH) or physical uplink shared channel (PUSCH) can be dynamically indicated by the downlink control information (DCI) scheduled by it, that is, There is a specific bit field in the DCI to indicate the number of repeated transmissions of the PDSCH or PUSCH.
  • the maximum number of repetitions (ie, Rmax) of the physical downlink control channel (PDCCH) may be semi-statically configured by RRC signaling or a system information block (SIB).
  • the NTN communication system due to the small difference in propagation distance between terminals and satellites in different geographical locations within the coverage of the same beam/cell (that is, terminals in different geographical locations within the coverage of the same beam/cell correspond to The path loss difference of the signal is small), and the variation of the propagation distance of the serving link (serving link) and the supply link (feeder link) is regular and periodic, so this leads to the NTN communication system.
  • the number of times of repeated transmission of the data channel is dynamically indicated, so that the bit size of the DCI (ie, the payload of the DCI) can be reduced, and the robustness of the PDCCH reception or the DCI can be improved.
  • the first configuration information may be used to determine the current repeated transmission times of the data channel.
  • the technical solutions in the embodiments of the present application are applicable to both the transparent forwarding mode and the regeneration signal mode.
  • the transparent forwarding mode the first configuration information is sent by the network device located on the ground.
  • the regenerative signal mode since the network device is located at the satellite, the first configuration information is sent by the network device located at the satellite.
  • the current number of repeated transmissions of the data channel can be understood as the number of repeated transmissions of the current data channel or the number of repeated transmissions required for data transmission on the current data channel, which is not specifically limited.
  • the current number of repeated transmissions can also be understood as the first number of repeated transmissions, and "first”, “second”, etc. in the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order.
  • the embodiment of the present application considers that the network device sends the first configuration information to the terminal, and the terminal determines the current repeated transmission times of the data channel according to the first configuration information, so as to realize the repeated transmission times of the data channel between the network device and the terminal. Adaptive adjustment is made with the constant change of the propagation distance between the terminal and the satellite, and an agreement on the number of repeated transmissions of the data channel is always guaranteed between the network device and the terminal.
  • the first configuration information may be indicated by at least one of RRC dedicated signaling, media access control element (MAC control element, MAC CE), and system broadcast information.
  • RRC dedicated signaling media access control element (MAC control element, MAC CE)
  • MAC control element media access control element
  • system broadcast information MAC control element
  • the embodiment of the present application considers that the network device sends the first configuration information to the terminal through at least one of RRC dedicated signaling, MAC CE, and system broadcast information to realize adaptive adjustment of the number of repeated transmissions.
  • the data channel may include at least one of the following: a physical uplink shared channel PUSCH, a physical downlink shared channel PDSCH, a physical random access channel PRACH, and a preconfigured uplink resource PUR.
  • the number of repeated transmissions of PUSCH/PDSCH/PRACH/PUR is adjusted through the network.
  • the terminal acquires the first configuration information from the network device.
  • the terminal determines the current repeated transmission times of the data channel according to the first configuration information.
  • the network device in the non-terrestrial network communication system sends the first configuration information to the terminal in the non-terrestrial network communication system; then, the terminal obtains the first configuration information, and according to the first configuration information
  • the configuration information determines the current number of repeated transmissions for the data channel. Since the first configuration information is configured by the network, it is beneficial to realize the adaptive adjustment of the number of repeated transmissions of the data channel between the network device and the terminal as the propagation distance between the terminal and the satellite changes continuously, and to always ensure that the network device and the terminal are always Agree on the number of repeated transmissions of the data channel.
  • the first configuration information may include one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate .
  • the starting value index (index) information can be used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information can be used to instruct the terminal to use the target value as the target value.
  • the delay of the current repeated transmission times; the value list (list) information may be used to indicate a list composed of multiple repeated transmission times (ie, at least two repeated transmission times) in sequence.
  • the first configuration information includes the starting value index information and the value validating delay information.
  • the terminal may determine the target value in the value list information according to the initial value index information, and then use the target value as the current repeated transmission times according to the value effective delay information. Since both the first configuration information and the value list information are configured by the network device, the number of repeated transmissions of the data channel between the network device and the terminal is further adaptively adjusted as the propagation distance between the terminal and the satellite changes continuously, and Ensure that the network device and the terminal reach an agreement on the number of repeated transmissions of the data channel.
  • the value list information can satisfy at least one of the following ways: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is between the values.
  • the arrangement order of the satellites has a corresponding relationship with the motion position of the satellites.
  • the embodiment of the present application considers that the position of the terminal in a period of time is approximately fixed, and mainly analyzes the change in the propagation distance between the terminal and the satellite caused by the position change of the satellite.
  • the embodiment of the present application considers that the network device determines the propagation between the terminal and the satellite according to the running track of the satellite and the current position of the terminal. The set of distances, and then determine each value in the value list information according to the set of propagation distances, thereby establishing a mapping relationship between the propagation distance between the terminal and the satellite and the values in the value list information.
  • the arrangement order of the values in the value list information has a corresponding relationship with the operating positions of the satellites, and the corresponding relationship may be in one-to-one correspondence.
  • the first mapping relationship information may be used to indicate the mapping relationship between the propagation distance from the terminal to the satellite in the non-terrestrial network communication system and the number of repeated transmissions.
  • the network device determines the set of propagation distances between the terminal and the satellite according to the running track of the satellite and the current position of the terminal, and then establishes the set of propagation distances and the number of repeated transmissions.
  • the mapping relationship between the two is to obtain the first mapping relationship information, so that the terminal determines the current number of repeated transmissions according to the first mapping relationship information, and further realizes that the number of repeated transmissions of the data channel between the network device and the terminal increases with the number of times between the terminal and the satellite.
  • the propagation distance is constantly changing and adaptively adjusted, and the network equipment and the terminal are guaranteed to reach an agreement on the number of repeated transmissions of the data channel.
  • the current common timing advance can be used to determine the current number of repeated transmissions from the second mapping relationship information, and the second mapping relationship information is configured by the network; the rate of change of the current common timing advance can be used to determine the current common timing advance;
  • the second mapping relationship information may be used to indicate the mapping relationship between the common timing advance and the number of repeated transmissions.
  • the mapping relationship may be that an interval of a common timing advance corresponds to a number of repeated transmissions.
  • the first configuration information includes the current public timing advance or the change rate of the current public timing advance.
  • the terminal may determine the current number of repeated transmissions from the second mapping relationship information according to the current common timing advance.
  • the terminal may determine the current common timing advance according to the rate of change of the current common timing advance, and then determine the current number of repeated transmissions from the second mapping relationship information according to the current common timing advance. Since both the first configuration information and the second mapping relationship information are configured by the network device, the number of repeated transmissions of the data channel between the network device and the terminal can be further adjusted adaptively with the constant change of the propagation distance between the terminal and the satellite. And ensure that the network device and the terminal reach an agreement on the number of repeated transmissions of the data channel.
  • the embodiment of the present application may have various technical solutions to solve the problem of how to determine the number of repeated transmissions of the data channel.
  • the following embodiments of the present application will specifically introduce the various technical solutions from the following situations.
  • the method may further include the following steps: the network device Send first information to the terminal, where the first information includes value list information.
  • the method may further include the following steps: the terminal Obtain first information from the network device, where the first information includes value list information.
  • the first information may be indicated by system broadcast information or RRC dedicated signaling.
  • the network device sends the first information to the terminal through system broadcast information or RRC dedicated signaling to obtain value list information, that is, sends the first information to the terminal through system broadcast information or RRC dedicated signaling. Indicates or configures the value list information.
  • system broadcast information may include SIB information.
  • the terminal determines the current repeated transmission times of the data channel according to the first configuration information, which may include the following steps: the terminal determines the target value from the value list information according to the initial value index information; After the delay information times out, the terminal takes the target value as the current number of repeated transmissions.
  • the terminal can use the initial value index information to index the value of the corresponding position in the value list information to obtain target value.
  • this embodiment of the present application also considers the information on the effective delay information configured by the network device.
  • the effective delay information of the value can effectively reflect the position change of the satellite, and after the effective delay information of the value expires, the terminal will take the target value as the current number of repeated transmissions, thereby further ensuring the network equipment and the terminal. Agree on the number of repeated transmissions of the data channel.
  • the terminal determines the current repeated transmission times of the data channel according to the initial value index information, the value effective delay information and the value list. For this reason, the embodiments of the present application also consider how to implement the technical solution for updating the current number of repeated transmissions, which will be specifically described below through two sub-scenarios.
  • the first information may further include update cycle information; the update cycle information may be used to indicate that the current number of repeated transmissions is updated by the terminal to the next value whose target value is located at the location of the value list information. Period, the period starts from the time when the value takes effect delay information timed out.
  • the unit of the period may be one of milliseconds (ms), subframe (subframe), frame (frame), time slot (slot), and PDCCH monitoring period, which is not specifically limited.
  • the method further includes the following steps: sending first indication information to the terminal through the MAC CE, where the first indication information is used to instruct the terminal to repeat the current number of transmissions Update to the next value where the target value is located in the value list information.
  • the network device instructs the terminal to update the current number of repeated transmissions by delivering the MAC CE.
  • the network device sends the first information to the terminal through system broadcast information or RRC dedicated signaling.
  • the first information includes value list information and update period information.
  • the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes initial value index information and value validation delay information.
  • the terminal receives the broadcast information or RRC dedicated signaling from the network equipment system to obtain the first information.
  • the first information includes value list information and update period information.
  • the terminal receives RRC dedicated signaling or MAC CE from the network device to obtain the first configuration information.
  • the first configuration information includes initial value index information and value validation delay information.
  • the terminal determines the target value from the value list information according to the initial value index information, and takes the target value as the current repeated transmission times of the data channel after the value validating delay information times out.
  • the terminal updates the current repeated transmission times to the next value where the target value is located at the location of the value list information.
  • mode 1 can be exemplified as the process shown in FIG. 7 .
  • the network device sends the first information to the terminal through system broadcast information or RRC dedicated signaling.
  • the first information includes value list information.
  • the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes initial value index information and value validation delay information.
  • the network device sends the first indication information to the terminal through the MAC CE.
  • the terminal obtains the first information from the network device through system broadcast information or RRC dedicated signaling.
  • the first information includes value list information.
  • the terminal obtains the first configuration information from the network device through RRC dedicated signaling or MAC CE; wherein, the first configuration information includes initial value index information and value validation delay information.
  • the terminal determines the target value from the value list information according to the initial value index information, and takes the target value as the current repeated transmission times of the data channel after the value validating delay information times out.
  • the terminal receives the MAC CE from the network device to obtain the first indication information, and according to the first indication information, updates the current repeated transmission times to the next value of the target value at the location of the value list information.
  • mode 2 can be exemplified as the flow shown in FIG. 8 .
  • the terminal takes the time after the time-out of the time-out of the value-effective delay information as the starting point, and after X ms, updates the current number of repeated transmissions to the next value of K2 at the location of ⁇ K1, K2, K3, K4, K5 ⁇ K3. It should be noted that the terminal can take K2 as the starting point, and update the next value in turn every X ms, that is, the first X ms is K2, the second X ms is K3, and so on.
  • Example 2 The terminal obtains the value list information from the network device through system broadcast information or RRC dedicated signaling as ⁇ K1, K2, K3, K4, K5 ⁇ . Secondly, the terminal obtains the initial value index information from the network device as 2 and the value effective delay information Y ms through RRC dedicated signaling or MAC CE. Thirdly, the terminal obtains the target value K2 from the value list information through the initial value index information, and takes K2 as the current repeated transmission times of the data channel after the time-out of the value effective delay information Y ms.
  • the terminal obtains the first indication information through the MAC CE for the first time, and according to the first indication information, updates the current repeated transmission times to the next value K3 where K2 is located at ⁇ K1, K2, K3, K4, K5 ⁇ . It should be noted that when the terminal obtains the first indication information through the MAC CE for the second time, the terminal updates K3 to K4, and so on.
  • the method further includes the following steps: the terminal acquires the first configuration information from the network device for PUR transmission.
  • Second configuration information the second configuration information includes PUR transmission period information, resource configuration information of the PUR transmission opportunity, and mapping relationship information between the PUR transmission resource block and the number of repeated transmissions.
  • the PUR transmission period information may be used to indicate the period of PUR transmission.
  • the resource configuration information of the PUR transmission occasion may be used to indicate multiple RUR transmission resource blocks configured in the PUR transmission occasion.
  • the multiple PUR transmission resource blocks may be distinguished by time division or frequency division.
  • the information on the mapping relationship between the PUR transmission resource block and the number of repeated transmissions may be used to indicate the mapping relationship between the multiple RUR transmission resource blocks configured at the PUR transmission opportunity and the multiple repeated transmission times.
  • the mapping relationship may be that each of the multiple RUR transmission resource blocks corresponds to one of the multiple repeated transmission times.
  • PUR transmission resource block 910 PUR transmission resource block 910
  • PUR transmission resource block 920 PUR transmission resource block 930
  • PUR transmission resource block 940 The number of repeated transmissions of the data channel corresponding to the PUR transmission resource block 910 is 1; the number of repeated transmissions of the data channel corresponding to the PUR transmission resource block 920 is 2; the number of repeated transmissions of the data channel corresponding to the PUR transmission resource block 930 is 3; The number of repeated transmissions of the data channel corresponding to the PUR transmission resource block 940 is four.
  • the second configuration information may be indicated by RRC dedicated signaling.
  • the network device sends the second configuration information to the terminal through RRC dedicated signaling to obtain the PUR transmission period information, the resource configuration information of the PUR transmission opportunity, and the difference between the PUR transmission resource block and the number of repeated transmissions. mapping information.
  • the terminal determines the current repeated transmission times of the data channel according to the first configuration information, which may include the following steps: the terminal acquires first propagation distance information, and the first propagation distance information may be used to indicate that the current location information of the terminal is different from that of the terminal. The propagation distance between satellites; the terminal determines the current number of repeated transmissions from the first mapping relationship information according to the first propagation distance information.
  • the terminal can use the first propagation distance information to index the corresponding number of repeated transmissions from the first mapping relationship information as the current number of repeated transmissions, thereby further realizing that the number of repeated transmissions of the data channel between the network device and the terminal increases with According to the constant change of the propagation distance between the terminal and the satellite, the adaptive adjustment is made, and the network equipment and the terminal are guaranteed to reach an agreement on the number of repeated transmissions of the data channel.
  • acquiring the first propagation distance information by the terminal may include the following steps: the terminal acquires current location information; and the terminal calculates and obtains the first propagation distance information according to the current location information and the preset satellite ephemeris.
  • the terminal can obtain the current location information through its own global navigation satellite system (GNSS) calculation, and then calculate its current location and satellites through the current location information and the preset satellite ephemeris. distance between them.
  • GNSS global navigation satellite system
  • the method may further include the following step: the terminal determines the current number of repeated transmissions according to the second configuration information and the current number of repeated transmissions
  • the PUR transmission resource block is used to transmit uplink data through the current PUR transmission resource block.
  • the network device sends the second configuration information for PUR transmission to the terminal through RRC dedicated signaling.
  • the second configuration information includes PUR transmission period information, resource configuration information of the PUR transmission opportunity, and mapping relationship information between the PUR transmission resource block and the number of repeated transmissions.
  • the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes first mapping relationship information.
  • the terminal receives the RRC dedicated signaling from the network device to obtain the second configuration information for PUR transmission.
  • the second configuration information includes PUR transmission period information, resource configuration information of the PUR transmission opportunity, and mapping relationship information between the PUR transmission resource block and the number of repeated transmissions.
  • the terminal receives RRC dedicated signaling or MAC CE from the network device to obtain the first configuration information.
  • the first configuration information includes first mapping relationship information.
  • the terminal acquires the first propagation distance information, and determines the current number of repeated transmissions from the first mapping relationship information according to the first propagation distance information.
  • the terminal determines the current PUR transmission resource block according to the second configuration information and the current number of repeated transmissions, and transmits uplink data through the current PUR transmission resource block.
  • situation two can be exemplified as the process shown in FIG. 10 .
  • the method may further include the following steps: the terminal Obtain second mapping relationship information from the network device.
  • the second mapping relationship information may be indicated by system broadcast information or RRC dedicated signaling.
  • the network device sends the second mapping relationship information to the terminal through system broadcast information or RRC dedicated signaling.
  • the terminal determines the current repeated transmission times of the data channel according to the first configuration information, which may include the following steps: the terminal determines the current repeated transmission times from the second mapping relationship information according to the current common timing advance; or, the terminal The current common timing advance is determined according to the rate of change of the current common timing advance; and the terminal determines the current number of repeated transmissions from the second mapping relationship information according to the current common timing advance.
  • the terminal can use the current common timing advance to index the corresponding repetition from the second mapping relationship information.
  • the number of transmissions is taken as the current number of repeated transmissions, so as to further realize the adaptive adjustment of the number of repeated transmissions of the data channel between the network equipment and the terminal with the constant change of the propagation distance between the terminal and the satellite, and to ensure the communication between the network equipment and the terminal. Agree on the number of repeat transmissions for the data channel.
  • T com T 0 + ⁇ t
  • T com represents the current common time advance
  • T 0 represents the initial common time advance, which is configured by the network
  • ⁇ represents the change rate of the current common time advance
  • t represents the time size.
  • the network device in “situation 1" can also be used to instruct the terminal to update the current number of repeated transmissions by delivering the MAC CE, which will not be repeated here.
  • the network device sends the second mapping relationship information to the terminal through system broadcast information or RRC dedicated signaling. Then, the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes the current public timing advance.
  • situation three can be exemplified as the flow shown in FIG. 11 .
  • the network device sends the second mapping relationship information to the terminal through system broadcast information or RRC dedicated signaling. Then, the network device sends the first configuration information to the terminal through system broadcast information or RRC dedicated signaling.
  • the first configuration information includes the current common timing advance change rate.
  • situation three can be exemplified as the flow shown in FIG. 12 .
  • the terminal or network device includes corresponding hardware structures and/or software modules for executing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the terminal or network device may be divided into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated units can be implemented in the form of hardware, and can also be implemented in the form of software program modules. It should be noted that, the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 13 provides a block diagram of functional units of an apparatus for determining the number of repeated transmissions.
  • the apparatus 1300 for determining the number of repeated transmissions is applied to a terminal in a non-terrestrial network communication system, and specifically includes: a processing unit 1302 and a communication unit 1303 .
  • the processing unit 1302 is used to control and manage the actions of the terminal.
  • the processing unit 1302 is used to support the terminal to perform the steps in FIG. 6 , FIG. 7 , FIG. 8 , FIG. 10 , FIG. 11 or FIG. other processes of the technical solution.
  • the communication unit 1303 is used to support communication between the terminal and other devices in the non-terrestrial network communication system.
  • the apparatus 1300 for determining the number of repeated transmissions may further include a storage unit 1301 for storing program codes and data of the terminal.
  • the processing unit 1302 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (application-specific integrated circuit) integrated circuit, ASIC), field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • the processing unit 1302 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
  • the processing unit 1302 is configured to perform any step performed by the terminal in the above method embodiments, and when performing data transmission such as sending, the communication unit 1303 can be selectively invoked to complete corresponding operations. A specific description will be given below.
  • the processing unit 1302 is configured to: acquire first configuration information from the network device; and determine the current repeated transmission times of the data channel according to the first configuration information.
  • each operation may refer to the descriptions in the method embodiments shown in FIG. 6 , FIG. 7 , FIG. 8 , FIG. 10 , FIG. 11 or FIG.
  • the first configuration information of the network device is acquired, and the current number of repeated transmissions of the data channel is determined according to the first configuration information. Since the first configuration information is configured by the network, it is beneficial to realize that the number of repeated transmissions of the data channel between the network device and the terminal is adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, And always ensure that the network device and the terminal reach an agreement on the number of repeated transmissions of the data channel.
  • the first configuration information is indicated by at least one of radio resource control RRC dedicated signaling, medium access control control element MAC CE, and system broadcast information.
  • the data channel includes at least one of the following: a physical uplink shared channel PUSCH, a physical downlink shared channel PDSCH, a physical random access channel PRACH, and a preconfigured uplink resource PUR.
  • the first configuration information includes one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of repeated transmission times; the value list information is used to indicate a list composed of multiple repeated transmission times in sequence.
  • the value list information satisfies at least one of the following manners: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system.
  • the order in which the values are arranged corresponds to the motion position of the satellite.
  • the processing unit 1302 before acquiring the first configuration information from the network device, is further configured to: acquire information from the network The first information of the device, where the first information includes value list information.
  • the first information is indicated by system broadcast information or RRC dedicated signaling.
  • the first information further includes update cycle information; the update cycle information is used to indicate that the current number of repeated transmissions is updated by the terminal to a cycle where the target value is the next value at the location of the value list information, The period starts from the time when the value-effective delay information times out.
  • the processing unit 1302 is further configured to: receive the MAC CE from the network device to obtain first indication information, where the first indication information is used for Instruct the terminal to update the current number of repeated transmissions to the next value where the target value is located at the location of the value list information.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance from the terminal to the satellite in the non-terrestrial network communication system and the number of repeated transmissions.
  • the processing unit 1302 before acquiring the first configuration information from the network device, is further configured to: acquire the second configuration for PUR transmission from the network device information, and the second configuration information includes PUR transmission period information, resource configuration information of the PUR transmission opportunity, and mapping relationship information between the PUR transmission resource block and the number of repeated transmissions.
  • the second configuration information is indicated by RRC dedicated signaling.
  • the processing unit 1302 is specifically configured to: acquire first propagation distance information, where the first propagation distance information is used to indicate the current location information of the terminal The propagation distance from the satellite; the current number of repeated transmissions is determined from the first mapping relationship information according to the first propagation distance information.
  • the processing unit 1302 is further configured to: determine the current PUR transmission resource according to the second configuration information and the current number of repeated transmissions block, and transmit uplink data through the current PUR transmission resource block.
  • the processing unit 1302 is further configured to: acquire The second mapping relationship information from the network device.
  • the second mapping relationship information is indicated by system broadcast information or RRC dedicated signaling.
  • the processing unit 1302 is specifically configured to: determine the current number of repeated transmissions from the second mapping relationship information according to the current common timing advance; or , determining the current common timing advance according to the rate of change of the current common timing advance; and determining the current number of repeated transmissions from the second mapping relationship information according to the current common timing advance.
  • FIG. 14 provides a block diagram of functional units of another apparatus for determining the number of repeated transmissions.
  • the apparatus 1400 for determining the number of repeated transmissions is applied to network equipment in a non-terrestrial network communication system, and specifically includes: a processing unit 1402 and a communication unit 1403 .
  • the processing unit 1402 is used to control and manage the actions of the network device.
  • the processing unit 1402 is used to support the network device to perform the steps in FIG. 6 , FIG. 7 , FIG. 8 , FIG. 10 , FIG. 11 or FIG. Other processes of the described technical solution.
  • the communication unit 1403 is used to support communication between the network device and other devices in the non-terrestrial network communication system.
  • the apparatus 1400 for determining the number of repeated transmissions may further include a storage unit 1401 for storing program codes and data of the network device.
  • the processing unit 1402 may be a processor or a controller, such as a CPU, DSP, ASIC, FPGA or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • the processing unit 1402 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1403 may be a communication interface, a transceiver, a transceiver circuit, etc., and the storage unit 1401 may be a memory.
  • the apparatus 1400 for determining the number of repeated transmissions involved in this embodiment of the present application may be the network device shown in FIG. 16 .
  • the processing unit 1402 is configured to perform any step performed by the network device in the above method embodiments, and when performing data transmission such as sending, the communication unit 1403 can be selectively invoked to complete corresponding operations. A detailed description will be given below.
  • the processing unit 1402 is configured to: send first configuration information to the terminal, where the first configuration information is used to determine the current repeated transmission times of the data channel.
  • the first configuration information is sent to the terminal, and the first configuration information is used to determine the current repeated transmission times of the data channel. Since the first configuration information is configured by the network, it is beneficial to realize that the number of repeated transmissions of the data channel between the network device and the terminal is adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, And always ensure that the network device and the terminal reach an agreement on the number of repeated transmissions of the data channel.
  • the first configuration information is indicated by at least one of radio resource control RRC dedicated signaling, medium access control control element MAC CE, and system broadcast information.
  • the data channel includes at least one of the following: a physical uplink shared channel PUSCH, a physical downlink shared channel PDSCH, a physical random access channel PRACH, and a preconfigured uplink resource PUR.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of repeated transmission times; the value list information is used to indicate a list composed of multiple repeated transmission times in sequence.
  • the value list information satisfies at least one of the following ways: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system.
  • the arrangement order between the values has a corresponding relationship with the motion position of the satellite.
  • the processing unit 1402 is further configured to: send the first configuration information to the terminal information, the first information includes value list information.
  • the first information further includes update cycle information; the update cycle information is used to indicate that the current number of repeated transmissions is updated by the terminal to a cycle where the target value is the next value at the location of the value list information, The period starts from the time when the value-effective delay information times out.
  • the processing unit 1402 is further configured to: send first indication information to the terminal through the MAC CE, where the first indication information is used to instruct the terminal to update the current number of repeated transmissions to The target value is the value next to the location of the value list information.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance from the terminal to the satellite in the non-terrestrial network communication system and the number of repeated transmissions.
  • the processing unit 1402 before sending the first configuration information to the terminal, is further configured to: send the second configuration information for PUR transmission to the terminal, the first The second configuration information includes the PUR transmission period information, the resource configuration information of the PUR transmission opportunity, and the mapping relationship information between the PUR transmission resource block and the number of repeated transmissions.
  • the second configuration information is indicated by RRC dedicated signaling.
  • the current common timing advance is used to determine the current number of repeated transmissions from the second mapping relationship information, and the second mapping relationship information is configured by the network; the rate of change of the current common timing advance is used to determine the current common timing advance ; The second mapping relationship information is used to indicate the mapping relationship between the common timing advance and the number of repeated transmissions.
  • the processing unit 1402 is further configured to: send the second Mapping relationship information.
  • FIG. 15 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • the terminal 1500 includes a processor 1510 , a memory 1520 , a communication interface 1530 and at least one communication bus for connecting the processor 1510 , the memory 1520 , and the communication interface 1530 .
  • the memory 1520 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (PROM) or portable Read-only memory (compact disc read-only memory, CD-ROM), the memory 1520 is used for related instructions and data.
  • RAM random access memory
  • ROM read-only memory
  • PROM erasable programmable read-only memory
  • CD-ROM portable Read-only memory
  • Communication interface 1530 is used to receive and transmit data.
  • the processor 1510 may be one or more CPUs, and if the processor 1510 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.
  • each operation may refer to the descriptions in the method embodiments shown in FIG. 6 , FIG. 7 , FIG. 8 , FIG. 10 , FIG. 11 or FIG. 12 , and details are not repeated here.
  • the data channel includes at least one of the following: a physical uplink shared channel PUSCH, a physical downlink shared channel PDSCH, a physical random access channel PRACH, and a preconfigured uplink resource PUR.
  • the first configuration information includes one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of repeated transmission times; the value list information is used to indicate a list composed of multiple repeated transmission times in sequence.
  • the first information is indicated by system broadcast information or RRC dedicated signaling.
  • the processor 1510 in determining the current number of repeated transmissions of the data channel according to the first configuration information, is configured to read one or more programs 1521 stored in the memory 1520 and specifically execute the following steps:
  • the value index information determines the target value from the value list information; after the value validating delay information times out, the target value is used as the current number of repeated transmissions.
  • the first information further includes update cycle information; the update cycle information is used to indicate that the current number of repeated transmissions is updated by the terminal to a cycle where the target value is the next value at the location of the value list information, The period starts from the time when the value-effective delay information times out.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance from the terminal to the satellite in the non-terrestrial network communication system and the number of repeated transmissions.
  • the processor 1510 before acquiring the first configuration information from the network device, the processor 1510 is configured to read one or more programs 1521 stored in the memory 1520 The following steps are also performed: acquiring second configuration information for PUR transmission from the network device, where the second configuration information includes PUR transmission period information, resource configuration information of PUR transmission occasions, and mapping relationship information between PUR transmission resource blocks and the number of repeated transmissions .
  • the processor 1510 in determining the current number of repeated transmissions of the data channel according to the first configuration information, is configured to read one or more programs 1521 stored in the memory 1520 and specifically perform the following steps: obtaining the first transmission Distance information, the first propagation distance information is used to indicate the propagation distance between the current location information of the terminal and the satellite; the current repeated transmission times are determined from the first mapping relationship information according to the first propagation distance information.
  • the current common timing advance is used to determine the current number of repeated transmissions from the second mapping relationship information, and the second mapping relationship information is configured by the network; the rate of change of the current common timing advance is used to determine the current common timing advance
  • the second mapping relationship information is used to indicate the mapping relationship between the common timing advance and the number of repeated transmissions.
  • the second mapping relationship information is indicated by system broadcast information or RRC dedicated signaling.
  • FIG. 16 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 1600 includes a processor 1610 , a memory 1620 , a communication interface 1630 and at least one communication bus for connecting the processor 1610 , the memory 1620 , and the communication interface 1630 .
  • the memory 1620 includes, but is not limited to, RAM, ROM, PROM, or CD-ROM, and the memory 1620 is used to store related instructions and data.
  • the first configuration information is indicated by at least one of RRC dedicated signaling, medium access control control element MAC CE, and system broadcast information.
  • the data channel includes at least one of the following: a physical uplink shared channel PUSCH, a physical downlink shared channel PDSCH, a physical random access channel PRACH, and a preconfigured uplink resource PUR.
  • the first configuration information includes one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of repeated transmission times; the value list information is used to indicate a list composed of multiple repeated transmission times in sequence.
  • the processor 1610 before sending the first configuration information to the terminal, the processor 1610 is configured to read the data stored in the memory 1620
  • the one or more programs 1621 also perform the following steps: sending first information to the terminal, where the first information includes value list information.
  • the first information is indicated by system broadcast information or RRC dedicated signaling.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance from the terminal to the satellite in the non-terrestrial network communication system and the number of repeated transmissions.
  • the second configuration information is indicated by RRC dedicated signaling.
  • the current common timing advance is used to determine the current number of repeated transmissions from the second mapping relationship information, and the second mapping relationship information is configured by the network; the rate of change of the current common timing advance is used to determine the current common timing advance ; The second mapping relationship information is used to indicate the mapping relationship between the common timing advance and the number of repeated transmissions.
  • the processor 1610 before sending the first configuration information to the terminal, the processor 1610 is configured to read the data stored in the memory 1620
  • the one or more programs 1621 also perform the following steps: sending the second mapping relationship information to the terminal.
  • the second mapping relationship information is indicated by system broadcast information or RRC dedicated signaling.
  • An embodiment of the present application further provides a chip, wherein the chip includes a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the execution of the terminal or network device in the above method embodiments. some or all of the steps described.
  • Embodiments of the present application further provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the terminal as described in the foregoing method embodiments or some or all of the steps described by the network device.
  • the embodiments of the present application also provide a computer program product, wherein the computer program product includes a computer program, and the computer program is operable to cause the computer to execute part or all of the description of the terminal or network device in the foregoing method embodiments step.
  • the computer program product may be a software installation package.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the ASIC may be located in a terminal or network device.
  • the processor and the storage medium may also exist in the terminal or network device as discrete components.
  • the functions described in the embodiments of the present application 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 may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted via wireline (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) means from a 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 media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, digital video disc (DVD)), or semiconductor media (eg, solid state disk (SSD)), etc. .

Abstract

Les modes de réalisation de la présente demande concernent des procédés et des appareils de détermination du nombre de transmissions répétées, un terminal et un dispositif de réseau, qui sont appliqués à un système de communication de réseau non terrestre, le système de communication de réseau non terrestre comprenant un terminal et un dispositif de réseau. Le procédé comprend les étapes suivantes : un dispositif de réseau envoie des premières informations de configuration à un terminal ; le terminal acquiert les premières informations de configuration en provenance du dispositif de réseau, et détermine un nombre actuel de transmissions répétées d'un canal de données selon les premières informations de configuration. Par conséquent, dans les modes de réalisation de la présente demande, puisque des premières informations de configuration sont configurées par un réseau, il est avantageux d'obtenir l'ajustement adaptatif du nombre de transmissions répétées d'un canal de données entre un dispositif de réseau et un terminal conjointement avec le changement continu de la distance de propagation entre le terminal et un satellite dans un système de communication de réseau non terrestre, et d'assurer toujours que le dispositif de réseau et le terminal soient d'accord sur le nombre de transmissions répétées du canal de données.
PCT/CN2021/133729 2020-12-07 2021-11-26 Procédés et appareils de détermination du nombre de transmissions répétées, terminal et dispositif de réseau WO2022121710A1 (fr)

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