CN111148255B - Data transmission method and device based on satellite system, storage medium, UE (user Equipment) and base station - Google Patents

Data transmission method and device based on satellite system, storage medium, UE (user Equipment) and base station Download PDF

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CN111148255B
CN111148255B CN202010162958.6A CN202010162958A CN111148255B CN 111148255 B CN111148255 B CN 111148255B CN 202010162958 A CN202010162958 A CN 202010162958A CN 111148255 B CN111148255 B CN 111148255B
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pur
target cell
time period
configuration
data transmission
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CN111148255A (en
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顾祥新
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A data transmission method and device based on a satellite system, a storage medium, UE and a base station are provided, the method comprises the following steps: receiving a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells; and initiating PUR transmission in the corresponding cell according to the PUR configuration of each cell. Therefore, the network can allocate the PUR configuration of a plurality of cells to the UE according to the transmission requirement of the UE, the PUR configuration for the UE does not need to be carried out on the cell by cell, and the PUR configuration amount of the UE is greatly reduced.

Description

Data transmission method and device based on satellite system, storage medium, UE (user Equipment) and base station
Technical Field
The present invention relates to the field of communications, and in particular, to a data transmission method and apparatus, a storage medium, a UE, and a base station based on a satellite system.
Background
The 3GPP RP #86 clause FS _ IoT _ NTN is a research on supporting narrowband Internet (Narrow Band Internet of Things, NB-IoT for short) and Internet of Things (eMTC for short) services in a satellite system.
In a medium-low altitude satellite system, in a scene where a cell moves on the ground, the visible time of one beam to User Equipment (User Equipment, abbreviated as UE) is very short, taking a cell with an altitude of 1200km and a satellite diameter of 60km as an example, the visible time of a single beam to UE is 11s, and one cell is composed of one beam or a plurality of adjacent beams. The time required for completing one time of sending UpLink (UpLink, UL) pre-configured UpLink Resource (PUR) transport blocks is relatively long, and the ratio of occupying visible time of a corresponding cell may be relatively high.
The NB-IoT terminal is not provided with a satellite parabolic antenna and a direction tracking system, a single carrier wave of 3.75kHz or even narrower is needed for uplink by using a common omnidirectional antenna, so the duration of a transmission block is longer, and one transmission of a PUR transmission block sent by a single carrier wave of 3.75kHz in NB-IoT needs to last for 32 ms. And the signal of the satellite system is weak, the height of a 1200km satellite can reach about-140 dbm, the signal of one transmission block needs to be repeated for hundreds of times, and the whole transmission duration of one uplink transmission block can reach about 5 seconds. The cycle time (Round Trip time, RTT for short) of the satellite system is relatively large, the communication process is further lengthened, and one time of PUR transmission and HARQ ACK process thereof may reach about 6 seconds.
In the prior art, only the PUR of the current cell is configured for the PUR configured for the UE. For the scenario described above, the UE is periodically covered by a group of cells in turn, where the period may be several hours or longer, that is, the PUR provided by one cell for the UE occurs periodically, and the period may be several hours or longer. If the data transmission occurs in a period shorter than the period in which the PUR provided by the cell occurs, the PUR must be configured by other cells to provide service to the UE. Considering the possible service period, tens of hundreds of cells are needed to configure the PUR of the UE, and the configuration amount is large.
Disclosure of Invention
The invention solves the technical problem that the PUR configuration amount of UE is large under the scene that a cell moves on the ground.
In order to solve the above technical problem, an embodiment of the present invention provides a data transmission method based on a satellite system, where the method includes: receiving a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells; and initiating PUR transmission in the corresponding cell according to the PUR configuration of each cell.
Optionally, the initiating the PUR transmission in the corresponding cell according to the PUR configuration of each cell includes: when UE intends to use the PUR configuration of a target cell to transmit data, judging whether data transmission can be completed by using corresponding PUR configuration in the target cell; and when the data transmission can be completed by using the corresponding PUR configuration in the target cell, initiating the data transmission in the target cell by using the PUR configuration.
Optionally, the method further includes: and when the configured PUR cannot be used and the UE is allowed to request to change the PUR configuration, initiating a PUR reconfiguration request.
Optionally, whether the UE is allowed to request to change the PUR configuration is indicated by the network through a system message or a proprietary signaling.
Optionally, the PUR reconfiguration request is used to request a network to reconfigure a PUR, or adjust PUR authorization.
Optionally, the PUR reconfiguration request includes a location of the UE.
Optionally, the determining whether the data transmission can be completed by using the corresponding PUR configuration in the target cell includes: obtaining the time period of UE residing in the target cell; obtaining a PUR process time period, wherein the PUR process time period comprises a time period occupied by PUR uplink transmission and HARQ ACK corresponding to the PUR uplink transmission; and if the PUR process time period is covered by the time period of the UE residing in the target cell, the data transmission can be completed in the target cell by using the corresponding PUR configuration.
Optionally, the obtaining the time period for the UE to camp on the target cell includes: obtaining the relation between the motion trail and the time of the target cell; and calculating the time period of the UE residing in the target cell according to the position of the UE and the relationship between the motion trail and the time of the target cell.
Optionally, the obtaining the relationship between the motion trajectory and the time of the target cell includes: determining a satellite where the target cell is located according to the distribution data of the satellite cells; acquiring ephemeris data of a satellite in which a target cell is located; and obtaining the relation between the motion trail and the time of the target cell according to the ephemeris data of the satellite where the target cell is located and the distribution data of the satellite cell.
Optionally, the obtaining the PUR procedure time period includes: and obtaining the uplink resource authorization of the PUR according to the PUR configuration, and calculating the time period occupied by the uplink transmission of the PUR and the HARQ ACK corresponding to the uplink transmission of the PUR.
The embodiment of the invention also provides a data transmission method based on the satellite system, which comprises the following steps: generating a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells; and sending the PUR configuration signaling to the UE so that the UE can initiate PUR transmission in the corresponding cell according to the PUR configuration of each cell.
Optionally, the method further includes: and when the UE wants to use the PUR configuration of the target cell to transmit data and judges that the data transmission can be completed by using the corresponding PUR configuration in the target cell, the UE uses the PUR configuration to initiate data transmission in the target cell.
Optionally, the method further includes: and receiving a PUR reconfiguration request, wherein the PUR reconfiguration request is initiated when the UE judges that the configured PUR cannot be used and is allowed to request to change the PUR configuration.
Optionally, the method further includes: indicating whether the UE is allowed to request the change of the PUR configuration through a system message or a proprietary signaling.
Optionally, the PUR reconfiguration request includes a location of the UE.
The embodiment of the invention also provides a data transmission device based on the satellite system, and the device comprises: a PUR configuration signaling receiving module, configured to receive a PUR configuration signaling, where a single PUR configuration signaling includes PUR configurations of multiple cells; and the PUR transmission module is used for initiating the PUR transmission in the corresponding cell according to the PUR configuration of each cell.
The embodiment of the invention also provides a data transmission device based on the satellite system, and the device comprises: the PUR configuration signaling generation module is used for generating the PUR configuration signaling, and a single PUR configuration signaling comprises the PUR configurations of a plurality of cells; and the signaling sending module is used for sending the PUR configuration signaling to the UE so that the UE can initiate PUR transmission in the corresponding cell according to the PUR configuration of each cell.
Embodiments of the present invention also provide a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the above method.
A UE comprising a memory having stored thereon a computer program and a processor that, when executing the computer program, performs the steps of the method described above.
A base station comprising a memory storing a computer program and a processor implementing the steps of the above method when executing the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a data transmission method based on a satellite system, which comprises the following steps: receiving a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells; and initiating PUR transmission in the corresponding cell according to the PUR configuration of each cell. Compared with the prior art, for a cell under a ground mobile scenario, the UE may receive a single PUR configuration signaling from a base station of a certain cell to configure PURs of multiple cells, where each cell may correspond to a single or multiple PUR configurations. Therefore, the network can allocate the PUR configuration of a plurality of cells to the UE according to the transmission requirement of the UE, and the UE does not need to be configured with the PUR by the cells, so that the PUR configuration amount of the UE is greatly reduced.
Further, as the satellite orbit changes, the time period for the UE to camp in the corresponding cell changes, and the time for completing the PUR transmission block once is relatively long, so that the UE may not complete the transmission of the PUR transmission block in the target cell. If the UE performs cell reselection during the sending of the PUR transport block, data transmission may fail. To avoid the above situation, the UE may determine whether data transmission can be completed in the target cell before initiating the PUR transmission, and if so, initiate the PUR transmission. If not, the UE may initiate a PUR reconfiguration request to the network to request the network to reconfigure the PUR for the UE or adjust PUR authorization, so as to obtain an available PUR configuration for data transmission.
Further, in actual use, the time period for the target cell to cover the UE may change due to the displacement of the UE, so that the PUR allocated to the UE cannot complete data transmission. At this time, the UE may initiate a PUR reconfiguration request to the network to request the network to reconfigure or adjust PUR authorization for the network, so as to obtain an available PUR configuration for data transmission.
Further, whether the UE can complete data transmission in the target cell is judged according to whether the time period of the PUR process is covered by the time period of the target cell where the UE resides, so that whether the PUR transmission needs to be initiated is accurately judged.
Drawings
Fig. 1 is a schematic flow chart of a data transmission method based on a satellite system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for transmitting data based on a satellite system according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another method for transmitting data based on a satellite system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a data transmission apparatus based on a satellite system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another data transmission apparatus based on a satellite system according to an embodiment of the present invention.
Detailed Description
As can be seen from the background art, the technical problem in the prior art is that the amount of PUR configuration for the UE is large in a scenario where a cell moves on the ground.
In order to solve the problem, an embodiment of the present invention provides a data transmission method based on a satellite system, where the method includes: receiving a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells; and initiating PUR transmission in the corresponding cell according to the PUR configuration of each cell.
By the method, the PUR resources of a plurality of cells can be configured through a single PUR configuration signaling, so that the UE can perform PUR transmission in the corresponding cell.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
To solve the above technical problem, an embodiment of the present invention provides a data transmission method based on a satellite system, please refer to fig. 1, the method includes the following steps:
step S101, receiving a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells;
the PUR configuration signaling is the signaling of the PUR which is sent to the UE by the network and used for configuring data transmission for the UE end.
Optionally, the PUR configuration of the UE is configured by the network and allocated to the UE according to the data transmission requirement of the UE, and each cell may correspond to a single or multiple PUR configurations.
Alternatively, the PUR configuration signaling may be sent to the UE by a base station passing through the UE's cell.
Wherein, along with the movement of the satellite, the position of the cell corresponding to the satellite also changes. The running track of the satellite, the distance between the satellite and the ground and the like can be obtained according to ephemeris data, so that a cell passing through a certain position on the ground can be predicted, the change condition of the cell where the UE at the position is located can also be predicted, and therefore, the PUR configuration of a plurality of cells can be distributed to the UE according to the position of the UE, and a PUR configuration signaling is generated for the PUR configuration and sent to the UE.
And step S102, initiating PUR transmission in the corresponding cell according to the PUR configuration of each cell.
When UE intends to use PUR to transmit data, it initiates PUR transmission in its corresponding cell according to the PUR configuration to transmit data.
By the scheme, for a cell under a ground moving scene, the UE can receive a single PUR configuration signaling from a base station of a certain cell to configure the PURs of a plurality of cells, and each cell can correspond to single or a plurality of PUR configurations. Therefore, the network can allocate the PUR configuration of a plurality of cells to the UE according to the transmission requirement of the UE, the PUR configuration for the UE does not need to be carried out on the cell by cell, and the PUR configuration amount of the UE is greatly reduced.
In an embodiment, the initiating, in step S102 in fig. 1, a PUR transmission in a corresponding cell according to the PUR configuration of each cell includes: when UE intends to use the PUR configuration of a target cell to transmit data, judging whether data transmission can be finished by using the corresponding PUR configuration in the target cell; and when the data transmission can be completed by using the corresponding PUR configuration in the target cell, initiating the data transmission in the target cell by using the PUR configuration.
In step S102, if the UE wants to transmit data, it first identifies whether the cell where the UE is located can use the radio resource configured by the PUR to complete data transmission, and if so, the UE may initiate the PUR transmission.
As the satellite and the earth move relatively, the UE camps in the corresponding cell, and the time for completing the once PUR transmission block is relatively long, the UE may not complete the transmission of the PUR transmission block in the target cell. If the UE performs cell reselection during the sending of the PUR transport block, data transmission may fail. To avoid the above situation, the UE may determine whether data transmission can be completed in the target cell before initiating the PUR transmission, and if so, initiate the PUR transmission.
Optionally, the PUR configuration signaling is RRC signaling.
The network may indicate the PUR configuration available to the UE through Radio Resource Control (RRC) signaling.
In one embodiment, the method further comprises: and when the configured PUR cannot be used and the UE is allowed to request to change the PUR configuration, initiating a PUR reconfiguration request. Wherein the configured PUR may be indicated by the PUR configuration of the cell.
Due to the change of star orbit or the displacement of the UE, the configured PUR of the UE can not be used, and when the UE finds that the configured PUR cannot be used, the UE can lift the PUR reconfiguration request to the network.
Wherein, whether the UE is allowed to initiate the PUR reconfiguration request may be configured by the network.
Optionally, whether the UE is allowed to request to change the PUR configuration is indicated by the network through a system message or a proprietary signaling.
When the UE is connected to the network, the network may indicate through a system message whether the UE is allowed to request a change of the PUR configuration. In addition, a proprietary signaling may also be defined to indicate whether the network allows the UE to request a change of the PUR configuration.
Optionally, the PUR reconfiguration request is used to request a network to reconfigure a PUR, or adjust PUR authorization.
The UE sends a PUR reconfiguration request to the network to request the network to re-distribute the PUR according to the position, data transmission requirement and the like of the UE; or, the configured PUR is authorized to the corresponding UE, so that the UE can use the authorized PUR.
Optionally, the PUR reconfiguration request includes a location of the UE.
When the UE sends a PUR reconfiguration request to the network, the current position of the UE can be reported to the network. The network can determine the cell where the UE is currently located or the cell where the UE is located within a future period of time according to the location of the UE, and allocate a corresponding PUR configuration to the UE.
Optionally, the network may return the reconfigured PUR configuration signaling to the UE, or adjust feedback information authorized by the PUR.
In the foregoing embodiment, if the UE cannot complete data transmission according to the configured PUR, that is, when the configured PUR cannot be used, the UE may initiate a PUR reconfiguration request to the network to request the network to reconfigure the PUR for the UE or adjust PUR authorization, so as to obtain an available PUR configuration for data transmission.
Referring to fig. 2, the above-mentioned determining whether the data transmission can be completed by using the corresponding PUR configuration in the target cell includes the following steps S201 to S203, wherein:
step S201, obtaining the time period of UE residing in the target cell;
the time period for the UE to camp on the target cell is how long the UE stays in the target cell.
The cell moves with the satellite, the motion condition of the satellite, such as the running track of the satellite and the distance between the satellite and the ground, can be obtained according to the ephemeris data, the movement of the cell/beam is also known since the movement of the satellite is known in advance, and the UE can calculate the time period of residing in the target cell according to the movement condition of the cell.
Step S202, a PUR process time slot is obtained, wherein the PUR process time slot comprises a time slot occupied by PUR uplink transmission and HARQ ACK corresponding to the PUR uplink transmission;
the period of the PUR process time is a time for sending a PUR transmission block, and includes, in addition to the time for uplink transmission of the PUR, a time for receiving an Acknowledgement Character (ACK) of a Hybrid Automatic Repeat reQuest (HARQ) returned from an uplink, and the UE obtains the period of the PUR process time to predict a time required for transmission of the PUR at this time.
Step S203, if the time period of the PUR process is covered by the time period of the UE residing in the target cell, the data transmission can be completed in the target cell by using the corresponding PUR configuration. The UE may initiate a PUR transmission at the target cell.
Optionally, if a part of the period of the PUR procedure is not covered by the period of time in which the UE camps on the target cell, the UE cannot complete data transmission in the target cell, and the UE cannot initiate PUR transmission in the target cell.
In this embodiment, whether the UE can complete data transmission in the target cell is determined according to whether the period of time of the PUR process is covered by the period of time in which the UE resides in the target cell, so as to accurately determine whether to initiate the PUR transmission.
In an embodiment, please continue to refer to fig. 2, the obtaining the time period for the UE to camp on the target cell in step S201 may include: obtaining the relation between the motion trail and the time of the target cell; and calculating the time period for the UE to reside in the target cell according to the position of the UE, the motion trail of the target cell and the time relation.
The relation between the motion track and the time of the target cell in a period of time in the future can be predicted according to the running condition of the satellite, and for the UE with the positioning function, the time period in which the position can also reside in the target cell can be judged according to the position of the UE, so that the time period in which the UE resides in the target cell is obtained.
Optionally, the obtaining a motion trajectory and a time relationship of the target cell includes: determining a satellite where the target cell is located according to the distribution data of the satellite cells; acquiring ephemeris data of a satellite in which a target cell is located; and obtaining the relationship between the motion trail and the time of the target cell according to the ephemeris data of the satellite where the target cell is located and the distribution data of the satellite cell.
The ephemeris data is the orbit parameter and the position time relation of the satellite, and the position of the satellite corresponding to any moment can be calculated according to the ephemeris data. The satellite cell distribution data is data of a distribution map of a cell under the satellite, and comprises cell shape and size and relative positions of the cells, and the motion trail and time relation of the target cell can be determined according to ephemeris data of the satellite corresponding to the target cell and the cell distribution data of the satellite.
Optionally, the cell distribution map data of the satellite may be included in the ephemeris data or may be included in another data.
Optionally, with continuing reference to fig. 2, obtaining the PUR procedure time period in step S202 may include: and obtaining the uplink resource authorization of the PUR according to the PUR configuration information, and calculating the time period occupied by the uplink transmission of the PUR and the HARQ ACK corresponding to the uplink transmission of the PUR.
After obtaining the PUR configuration information, the UE may request a PUR uplink resource grant according to the PUR configuration information, thereby calculating a time period occupied by HARQ ACK corresponding to the PUR uplink transmission machine according to the PUR uplink resource.
An embodiment of the present invention further provides a data transmission method based on a satellite system, please refer to fig. 3, where the method includes:
step S301, generating a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells;
step S302, the PUR configuration signaling is sent to the UE, so that the UE can initiate PUR transmission in the corresponding cell according to the PUR configuration of each cell.
For a base station of a cell, a PUR configuration signaling that can be used for configuring respective radio resources of multiple cells may be generated, and according to factors such as the cell in which each UE is located, the UE that will pass through, and data transmission requirements of the UE, the generated PUR configuration information is sent to the corresponding UE, so that the received UE may initiate PUR transmission according to the steps in fig. 1.
Optionally, the method illustrated in fig. 3 further includes: and when the UE wants to use the PUR configuration of the target cell to transmit data and judges that the data transmission can be completed by using the corresponding PUR configuration in the target cell, the UE uses the PUR configuration to initiate data transmission in the target cell.
Optionally, the PUR configuration signaling is RRC signaling.
Optionally, the method illustrated in fig. 3 further includes: and receiving a PUR reconfiguration request, wherein the PUR reconfiguration request is initiated when the UE judges that the configured PUR cannot be used and is allowed to request to change the PUR configuration.
Optionally, the method illustrated in fig. 3 further includes: indicating whether the UE is allowed to request the change of the PUR configuration through a system message or a proprietary signaling.
Optionally, the PUR reconfiguration request includes a location of the UE.
When receiving the PUR reconfiguration request sent by the UE, the network may obtain the adjusted PUR grant for the reconfigured PUR according to the location of the UE or the cell where the UE is currently located or located for a period of time in the future. Configuration messages and signaling related to the PUR configuration of the UE by the network can be sent to the UE through a base station of a cell where the UE is located.
The data transmission method based on the satellite system in fig. 3 can be implemented by the base station, and more contents of the working principle and the working mode thereof can refer to the related description about the network in fig. 1 and fig. 2, which are not described herein again.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a data transmission apparatus based on a satellite system, the apparatus including:
a PUR configuration signaling receiving module 401, configured to receive a PUR configuration signaling, where a single PUR configuration signaling includes PUR configurations of multiple cells;
a PUR transmission module 402, configured to initiate PUR transmission in a corresponding cell according to the PUR configuration of each cell.
For more details of the working principle and the working mode of the data transmission apparatus based on the satellite system in fig. 4, reference may be made to the related description in fig. 1 and fig. 2, and further description is omitted here.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a data transmission apparatus based on a satellite system, the apparatus including:
a PUR configuration signaling generating module 501, configured to generate a PUR configuration signaling, where a single PUR configuration signaling includes PUR configurations of multiple cells;
a signaling sending module 502, configured to send the PUR configuration signaling to the UE, so that the UE initiates PUR transmission in a corresponding cell according to the PUR configuration of each cell.
For more details on the working principle and working mode of the data transmission device based on the satellite system, reference may be made to the related description in fig. 3, which is not repeated here.
It should be noted that the technical solution of the present invention is applicable to a 5G (5Generation) communication system, a 4G communication system, a 3G communication system, and various future new communication systems, such as 6G, 7G, and the like.
The embodiment of the invention also provides a storage medium, wherein computer instructions are stored on the storage medium, and the computer instructions execute the steps of the method when running. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.
Specifically, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory in the embodiments of the subject application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).
The embodiment of the present invention further provides a UE, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes the computer instructions to perform the steps of the methods shown in fig. 1 and fig. 2. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
Specifically, a terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal device), a wireless communication device, a user agent, or a user equipment. The terminal device 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 handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the computer instructions to execute the steps of the method shown in fig. 3.
A Base Station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a base station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a base station function in a 3G network includes a node b (nodeb), apparatuses for providing a base station function in a 4G network include evolved node bs (enbs), which, in a Wireless Local Area Network (WLAN), the devices providing the base station function are an Access Point (AP), a device gNB providing the base station function in a New Radio (NR) of 5G, and a node B (ng-eNB) continuing to evolve, the gNB and the terminal communicate with each other by adopting an NR (NR) technology, the ng-eNB and the terminal communicate with each other by adopting an E-UTRA (evolved Universal Terrestrial Radio Access) technology, and both the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.
The base station controller in the embodiment of the present application is a device for managing a base station, for example, a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, or a device for controlling and managing a base station in a future new communication system.
The network on the network side in the embodiment of the present invention refers to a communication network providing communication services for a terminal, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on the core network side.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected by one skilled in the art without departing from the spirit and scope of the invention, as defined in the appended claims.

Claims (17)

1. A method for data transmission based on a satellite system, the method comprising:
receiving a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells;
initiating PUR transmission in a corresponding cell according to the PUR configuration of each cell;
the initiating the PUR transmission in the corresponding cell according to the PUR configuration of each cell includes:
when UE intends to use the PUR configuration of a target cell to transmit data, judging whether data transmission can be finished by using the corresponding PUR configuration in the target cell;
when the data transmission can be completed by using the corresponding PUR configuration in the target cell, initiating the data transmission in the target cell by using the PUR configuration;
the determining whether data transmission can be completed using the corresponding PUR configuration in the target cell includes: obtaining the time period of UE residing in the target cell;
obtaining a PUR process time period, wherein the PUR process time period comprises a time period occupied by PUR uplink transmission and HARQ ACK corresponding to the PUR uplink transmission;
and if the PUR process time period is covered by the time period of the target cell resided by the UE, the data transmission can be completed in the target cell by using the corresponding PUR configuration.
2. The method of claim 1, further comprising:
and when the configured PUR cannot be used and the UE is allowed to request to change the PUR configuration, initiating a PUR reconfiguration request.
3. The method of claim 2, wherein whether the UE is allowed to request the PUR configuration change is indicated by a system message or a proprietary signaling from a network.
4. The method of claim 2, wherein the PUR reconfiguration request is used to request a network to reconfigure PUR or adjust PUR authorization.
5. The method of claim 2, wherein the PUR reconfiguration request includes a location of the UE.
6. The method of claim 1, wherein the obtaining the time period for the UE to camp on the target cell comprises:
obtaining the relation between the motion trail and the time of the target cell;
and calculating the time period for the UE to reside in the target cell according to the position of the UE, the motion trail of the target cell and the time relation.
7. The method of claim 6, wherein the obtaining the motion trajectory and time relationship of the target cell comprises:
determining a satellite where the target cell is located according to the distribution data of the satellite cells;
acquiring ephemeris data of a satellite in which a target cell is located;
and obtaining the relationship between the motion trail and the time of the target cell according to the ephemeris data of the satellite where the target cell is located and the distribution data of the satellite cell.
8. The method of claim 1, wherein obtaining the PUR procedure time period comprises:
and obtaining the uplink resource authorization of the PUR according to the PUR configuration, and calculating the uplink transmission of the PUR and the time period occupied by the corresponding HARQ ACK.
9. A method for data transmission based on a satellite system, the method comprising:
generating a PUR configuration signaling, wherein a single PUR configuration signaling comprises PUR configurations of a plurality of cells;
sending the PUR configuration signaling to the UE so that the UE can initiate PUR transmission in the corresponding cell according to the PUR configuration of each cell;
when UE wants to use the PUR configuration of a target cell to transmit data and judges that data transmission can be completed by using the corresponding PUR configuration in the target cell, the UE uses the PUR configuration to initiate data transmission in the target cell;
the UE determines whether data transmission can be completed in the target cell using the corresponding PUR configuration by:
obtaining the time period of UE residing in the target cell;
obtaining a PUR process time period, wherein the PUR process time period comprises a time period occupied by PUR uplink transmission and HARQ ACK corresponding to the PUR uplink transmission;
and if the PUR process time period is covered by the time period of the UE residing in the target cell, the data transmission can be completed in the target cell by using the corresponding PUR configuration.
10. The method of claim 9, further comprising:
and receiving a PUR reconfiguration request, wherein the PUR reconfiguration request is initiated when the UE judges that the configured PUR cannot be used and is allowed to request to change the PUR configuration.
11. The method of claim 10, further comprising:
indicating whether the UE is allowed to request the change of the PUR configuration through a system message or a proprietary signaling.
12. The method of claim 10, wherein the PUR reconfiguration request includes a location of the UE.
13. A data transmission apparatus based on a satellite system, the apparatus comprising:
a PUR configuration signaling receiving module, configured to receive a PUR configuration signaling, where a single PUR configuration signaling includes PUR configurations of multiple cells;
the PUR transmission module is used for initiating PUR transmission in the corresponding cell according to the PUR configuration of each cell;
wherein, the PUR transmission module is further configured to execute the following steps: when UE intends to use the PUR configuration of a target cell to transmit data, judging whether data transmission can be finished by using the corresponding PUR configuration in the target cell;
when the data transmission can be completed by using the corresponding PUR configuration in the target cell, initiating the data transmission in the target cell by using the PUR configuration;
the determining whether data transmission can be completed using the corresponding PUR configuration in the target cell includes: obtaining the time period of UE residing in the target cell;
obtaining a PUR process time period, wherein the PUR process time period comprises a time period occupied by PUR uplink transmission and HARQ ACK corresponding to the PUR uplink transmission;
and if the PUR process time period is covered by the time period of the target cell resided by the UE, the data transmission can be completed in the target cell by using the corresponding PUR configuration.
14. A data transmission apparatus based on a satellite system, the apparatus comprising:
the PUR configuration signaling generation module is used for generating the PUR configuration signaling, and a single PUR configuration signaling comprises the PUR configurations of a plurality of cells;
a signaling sending module, configured to send the PUR configuration signaling to the UE, so that the UE initiates PUR transmission in a corresponding cell according to the PUR configuration of each cell;
when UE intends to use the PUR configuration of a target cell to transmit data and judges that data transmission can be completed by using the corresponding PUR configuration in the target cell, the UE uses the PUR configuration to initiate data transmission in the target cell;
the UE determines whether data transmission can be completed in the target cell using the corresponding PUR configuration by:
obtaining the time period of UE residing in the target cell;
obtaining a PUR process time period, wherein the PUR process time period comprises a time period occupied by PUR uplink transmission and HARQ ACK corresponding to the PUR uplink transmission;
and if the PUR process time period is covered by the time period of the target cell resided by the UE, the data transmission can be completed in the target cell by using the corresponding PUR configuration.
15. A storage medium having stored thereon a computer program for implementing the steps of the method of any one of claims 1 to 8, or of any one of claims 9 to 12, when executed by a processor.
16. A UE comprising a memory and a processor, the memory storing a computer program, wherein the processor when executing the computer program implements the steps of the method of any of claims 1 to 8.
17. A base station comprising a memory and a processor, the memory storing a computer program, wherein the processor when executing the computer program implements the steps of the method of any one of claims 9 to 12.
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