CN112585888A

CN112585888A - Data transmission method and device, communication equipment and storage medium

Info

Publication number: CN112585888A
Application number: CN202080003569.7A
Authority: CN
Inventors: 朱亚军
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-03-30
Anticipated expiration: 2040-11-24
Also published as: CN112585888B; WO2022109805A1

Abstract

The embodiment of the disclosure provides a data transmission method and device, communication equipment and a storage medium. The method is applied to the terminal and comprises the following steps: and determining time information of data transmission, wherein the time information is used for indicating the time of the terminal for communicating through the service satellite.

Description

Data transmission method and device, communication equipment and storage medium

Technical Field

The embodiments of the present disclosure relate to the field of wireless communications, but not limited to the field of wireless communications, and in particular, to a data transmission method and apparatus, a communication device, and a storage medium.

Background

In the field of wireless communication, satellite communication is increasingly being utilized. Satellite communication refers to communication performed by terrestrial radio communication devices using satellites as relays. The satellite communication system is composed of a satellite part and a ground part. The satellite communication has the advantages of large communication range, difficult influence from land disasters and the like. However, the number of satellites is limited, satellite communication is difficult to achieve all-weather coverage, and meanwhile, some satellites do not have inter-satellite links, so that data of the terminal cannot be transmitted in real time, or transmission failure or transmission leakage and the like are caused in the transmission process.

Disclosure of Invention

The disclosure provides a data transmission method and apparatus, a communication device and a storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided a data transmission method, which is applied to a terminal, and includes:

and determining time information of data transmission, wherein the time information is used for indicating the time of the terminal for communicating through the service satellite.

In some embodiments, the determining time information for data transmission includes:

reporting the position information of the terminal to a base station; wherein the location information is used for the base station to determine the time information of the terminal for communication through the service satellite;

and receiving the time information issued by the base station.

In some embodiments, the method further comprises:

responding to the existence of data to be sent, and caching the data to be sent;

and transmitting the data to be transmitted in the time period indicated by the time information.

In some embodiments, the buffering the data to be sent in response to the presence of the data to be sent includes:

responding to the existence of data to be sent, and recombining the data to be sent into a data packet to be sent according to the time information;

and caching the data packet to be sent.

In some embodiments, the reconstructing, in response to the existence of the data to be transmitted, the data to be transmitted into the data packet to be transmitted according to the time information includes:

responding to the existence of data to be sent, and recombining the data to be sent in a preset time period into a data packet to be sent; wherein, the preset time length is used for transmitting data packets; wherein the predetermined duration is agreed by a protocol or specified by a base station.

In some embodiments, the data packet to be sent includes: identification information; the identification information is at least used for identifying a preset sending sequence of data to be sent in the data packet to be sent.

In some embodiments, the transmitting the data to be transmitted in the time period indicated by the time information includes:

and in the time period determined by the time information, carrying at least part of the data to be sent in a message for random access and sending the message to a base station.

In some embodiments, the message for random access comprises: and the indication information is used for indicating whether the indication information of the data to be sent except the data to be sent carried in the message for random access exists.

In some embodiments, if the indication information indicates that there is data to be transmitted other than the data to be transmitted carried in the message for random access, the message for random access further includes: the data amount of the data to be transmitted, which is not carried in the message for random access.

According to a second aspect of the embodiments of the present disclosure, there is provided a data transmission method, which is applied to a base station, and includes:

receiving position information of a terminal;

determining a service satellite of the terminal according to the position information of the terminal;

and determining the time information of the terminal for communication through the service satellite according to the service satellite.

In some embodiments, the method further comprises:

responding to the existence of data to be issued, and caching the data to be issued;

and sending the data to be transmitted in the time period indicated by the time information.

In some embodiments, the buffering the data to be transmitted in response to the existence of the data to be transmitted includes:

responding to the existence of the data to be issued, and recombining the data to be issued into a data packet to be issued according to the time information;

and caching the data packet to be transmitted.

In some embodiments, the reconstructing the data to be transmitted into the data packet to be transmitted according to the time information in response to the existence of the data to be transmitted includes:

responding to the existence of the data to be issued, and recombining the data to be issued within a preset time length into the data packet to be issued; wherein the predetermined duration is agreed by a protocol or specified by a base station.

In some embodiments, the data packet to be sent down includes: identification information; the identification information is at least used for identifying a preset sending sequence of the data to be sent in the data packet to be sent.

In some embodiments, the method further comprises:

and receiving the data to be sent reported by the terminal in the time period indicated by the time information.

In some embodiments, the receiving, in the time period indicated by the time information, data to be sent reported by the terminal includes:

and receiving a message for random access sent by a terminal in a time period determined by the time information, wherein the message for random access carries at least part of data to be sent of the terminal.

In some embodiments, the message for random access comprises: indicating information for indicating whether data to be transmitted other than the data to be transmitted carried in the message for random access exists; the method further comprises the following steps:

responding to the indication information in the message for random access to indicate that data to be sent except the data to be sent carried in the message for random access exists, and sending a scheduling instruction for indicating a terminal to send resources of the data; or

Responding to the indication information in the message for random access to indicate that data to be sent except the data to be sent carried in the message for random access does not exist, and stopping issuing the scheduling instruction in a preset time period; wherein the duration of the predetermined period is less than or equal to the duration indicated by the time information.

According to a third aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, which is applied to a terminal, and includes:

the terminal comprises a first determination module configured to determine time information of data transmission, wherein the time information is used for indicating the time of communication of the terminal through a service satellite.

In some embodiments, the first determining module comprises:

the first reporting submodule is configured to report the position information of the terminal to a base station; wherein the location information is used for the base station to determine the time information of the terminal for communication through the service satellite;

and the first receiving submodule is configured to receive the time information issued by the base station.

In some embodiments, the apparatus further comprises:

the first cache module is configured to respond to the existence of data to be sent and cache the data to be sent;

a first sending module configured to send the data to be sent in a time period indicated by the time information.

In some embodiments, the first cache module comprises:

the first reassembly submodule is configured to respond to the existence of data to be sent, and reassemble the data to be sent into a data packet to be sent according to the time information;

and the first cache submodule is configured to cache the data packet to be sent.

In some embodiments, the first reassembly sub-module comprises:

the second recombination submodule is configured to respond to the existence of data to be sent, and recombine the data to be sent within a preset time length into the data packet to be sent; wherein the predetermined duration is agreed by a protocol or specified by a base station.

In some embodiments, the sending module includes:

and the first sending submodule is configured to carry at least part of the data to be sent in a message for random access in a time period determined by the time information and send the data to be sent to a base station.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, where the apparatus is applied to a base station, and the apparatus includes:

a first receiving module configured to receive location information of a terminal;

a second determining module configured to determine a serving satellite of the terminal according to the location information of the terminal;

and the third determining module is configured to determine time information of the terminal for communication through the service satellite according to the service satellite.

In some embodiments, the apparatus further comprises:

the second cache module is configured to respond to the existence of the data to be issued and cache the data to be issued;

and the second sending module is configured to send the data to be sent in the time period indicated by the time information.

In some embodiments, the second cache module comprises:

the third reassembly sub-module is configured to respond to the existence of the data to be issued, and reassemble the data to be issued into a data packet to be issued according to the time information;

and the second cache submodule is configured to cache the data packet to be transmitted.

In some embodiments, the third reassembly sub-module comprises:

the fourth reconfiguration submodule is configured to respond to the existence of the data to be issued, and reconfigure the data to be issued within a preset time length into the data packet to be issued; wherein the predetermined duration is agreed by a protocol or specified by a base station.

In some embodiments, the apparatus further comprises:

and the second receiving module is configured to receive the data to be sent reported by the terminal in the time period indicated by the time information.

In some embodiments, the second receiving module comprises:

and a second receiving submodule configured to receive a message for random access sent by a terminal in a time period determined by the time information, wherein the message for random access carries at least part of data to be sent of the terminal.

In some embodiments, the message for random access comprises: indicating information for indicating whether data to be transmitted other than the data to be transmitted carried in the message for random access exists; the device further comprises:

the issuing module is configured to respond to the indication information in the message for random access indicating that data to be sent except the data to be sent carried in the message for random access exists, and issue a scheduling instruction for indicating a terminal to send resources of the data; or

A stopping module configured to respond to the indication information in the message for random access indicating that there is no data to be sent other than the data to be sent carried in the message for random access, and stop issuing the scheduling instruction within a predetermined period of time; wherein the duration of the predetermined period is less than or equal to the duration indicated by the time information.

According to a fifth aspect of embodiments of the present disclosure, there is provided a communication apparatus including at least: a processor and a memory for storing executable instructions operable on the processor, wherein:

the processor is configured to execute the executable instructions, and the executable instructions perform the steps of any of the above data transmission methods.

According to a sixth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored therein computer-executable instructions that, when executed by a processor, implement the steps of any of the data transmission methods described above.

The embodiment of the disclosure provides a data transmission method and device, communication equipment and a storage medium. According to the technical scheme of the embodiment of the disclosure, the time for the terminal to communicate through the service satellite is determined, and the terminal or the base station can select the time for data transmission, so that the problem of data transmission of the terminal under the condition that the coverage of the satellite is limited is solved, and the phenomena of data transmission errors, data missing and the like are reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the embodiments.

Fig. 1 is a block diagram illustrating a wireless communication system in accordance with an exemplary embodiment;

FIG. 2 is a flow chart one of a data transmission method according to an exemplary embodiment;

FIG. 3 is a flow chart diagram two illustrating a method of data transmission in accordance with an exemplary embodiment;

FIG. 4 is a flow chart diagram three illustrating a data transmission method in accordance with an exemplary embodiment;

FIG. 5 is a block diagram illustrating a first configuration of a data transmission apparatus according to an exemplary embodiment;

FIG. 6 is a block diagram of a data transfer device shown in accordance with an exemplary embodiment;

FIG. 7 is a first block diagram illustrating a communications device in accordance with an exemplary embodiment;

fig. 8 is a schematic structural diagram of a communication device shown in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosed embodiments, as detailed in the appended claims.

The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information in the embodiments of the present disclosure, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The words "if" and "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.

In order to better describe any embodiment of the present disclosure, an embodiment of the present disclosure is exemplarily illustrated by taking an application scenario of access control as an example.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: several terminals 11 and several base stations 12.

Terminal 11 may refer to, among other things, a device that provides voice and/or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN), and the terminal 11 may be an internet of things terminal, such as a sensor device, a mobile phone (or referred to as a "cellular" phone), and a computer having the internet of things terminal, and may be a fixed, portable, pocket, handheld, computer-included, or vehicle-mounted device, for example. For example, a Station (STA), a subscriber unit (subscriber unit), a subscriber Station (subscriber Station), a mobile Station (mobile), a remote Station (remote Station), an access point (ap), a remote terminal (remote terminal), an access terminal (access terminal), a user equipment (user terminal), a user agent (user agent), a user equipment (user device), or a user terminal (user equipment, terminal). Alternatively, the terminal 11 may be a device of an unmanned aerial vehicle. Alternatively, the terminal 11 may also be a vehicle-mounted device, for example, a vehicle computer with a wireless communication function, or a wireless terminal externally connected to the vehicle computer. Alternatively, the terminal 11 may be a roadside device, for example, a street lamp, a signal lamp or other roadside device with a wireless communication function.

The base station 12 may be a network side device in a wireless communication system. The wireless communication system may be a fourth generation mobile communication (4G) system, which is also called a Long Term Evolution (LTE) system; alternatively, the wireless communication system can be a 5G system, which is also called a New Radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next-generation system of a 5G system. Among them, the Access Network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).

The base station 12 may be an evolved node b (eNB) used in a 4G system. Alternatively, the base station 12 may be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 12 adopts a centralized distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DU). A Packet Data Convergence Protocol (PDCP) layer, a Radio Link layer Control Protocol (RLC) layer, and a Media Access Control (MAC) layer are provided in the central unit; a Physical (PHY) layer protocol stack is disposed in the distribution unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12.

The base station 12 and the terminal 11 may establish a wireless connection over a wireless air interface. In various embodiments, the wireless air interface is based on a fourth generation mobile communication network technology (4G) standard; or the wireless air interface is based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.

In some embodiments, an E2E (End to End) connection may also be established between terminals 11. Scenarios such as V2V (vehicle to vehicle) communication, V2I (vehicle to Infrastructure) communication, and V2P (vehicle to vehicle) communication in vehicle networking communication (V2X).

In some embodiments, the wireless communication system may further include a network management device 13.

Several base stations 12 are connected to a network management device 13, respectively. The network Management device 13 may be a Core network device in a wireless communication system, for example, the network Management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the Network management device may also be other core Network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), a Home Subscriber Server (HSS), or the like. The implementation form of the network management device 13 is not limited in the embodiment of the present disclosure.

The continuous emergence of new internet applications such as new generation of Augmented Reality (AR), Virtual Reality (VR), and vehicle-to-vehicle communication has raised higher requirements for wireless communication technology, driving the continuous evolution of wireless communication technology to meet the application requirements. Currently, cellular mobile communication technology is in the evolution stage of new generation technology. An important feature of the new generation of technology is to support flexible configuration of multiple service types. Because different service types have different requirements for wireless communication technology, for example, the main requirements of the service type of the Enhanced Mobile Broadband (eMBB) are mainly focused on the aspects of large bandwidth, high speed and the like; URLLC (Ultra-reliable and Low Latency Communications) traffic type mainly requires emphasis on higher reliability and Low Latency; the major requirements of mtc (Massive machine type Communication) traffic type focus on large connection count. New generation wireless communication systems therefore require flexible and configurable designs to support the transmission of multiple traffic types.

Among wireless communication technologies, satellite communication is an important aspect of future wireless communication technology development. Satellite communication refers to communication performed by a radio communication device on the ground using a satellite as a relay. A satellite communication system is comprised of a satellite portion and a terrestrial portion. The satellite communication is characterized in that: the communication range is large; communication can be performed from any two points as long as the range covered by the electric wave transmitted by the satellite is covered; is not easily affected by land disasters (high reliability). Satellite communications, as a complement to current terrestrial cellular communication systems, may have the following benefits:

first, extend and cover: for areas which cannot be covered by the existing cellular communication system or are high in coverage cost, such as oceans, deserts, remote mountainous areas and the like, the problem of communication can be solved through satellite communication.

Secondly, emergency communication: the use of satellite communication allows for the rapid establishment of communication connections in conditions where disasters, such as earthquakes, etc., may occur, which may result in the unavailability of the infrastructure for cellular communication.

Thirdly, providing industrial application: for example, for delay-sensitive services transmitted over long distances, the delay of service transmission can be reduced by means of satellite communication.

It is expected that in future wireless communication systems, a satellite communication system and a terrestrial cellular communication system will gradually realize deep fusion, and truly realize all-thing intelligent association.

Based on the above fusion of the satellite communication system and the terrestrial communication system, as shown in fig. 2, an embodiment of the present disclosure provides a data transmission method, where the method is applied to a terminal, and includes:

step S101, determining time information of data transmission, wherein the time information is used for indicating the time of the terminal for communication through a service satellite.

In terrestrial communication systems, data transmission is usually based on scheduling, that is, a base station instructs a terminal to transmit or receive data on an indicated time-frequency resource location through a scheduling instruction. In addition, the base station may also pre-configure resources for the terminal to transmit or receive data, and the terminal transmits or receives data at the corresponding time-frequency resource location based on the configuration information.

For satellite communication, the coverage problem in a specific scene can be effectively solved. For example, internet of things services are important application services for satellite communication. The connection problem in remote or island scenarios can be solved through satellite communication. In the early stage of low-orbit satellite deployment, the coverage of all weather can not be achieved due to the limitation of the number of satellites, and meanwhile, partial satellites do not have interstellar links. In this case, it is impossible for the terminal of the internet of things to perform data transmission.

Based on this, the embodiments of the present disclosure provide the above method, and determine the timing of providing the data transmission service by the satellite to complete the transmission of the data by determining the time information of the data transmission.

Here, the time information is used to indicate a time when the terminal communicates through the serving satellite. The serving satellite may provide ephemeris information including one or more target satellites for establishing a communication connection with the terminal and enabling data transmission by the terminal. The ephemeris information of the satellite contains the availability of satellite services and other information relevant to the user. Therefore, the time information may be determined from the ephemeris information, i.e. the time information may be associated with the ephemeris information, and an exemplary embodiment of such association may be at least one of:

the ephemeris information of the satellite comprises the coverage range and the coverage time for providing data communication service; the time information is determined according to the relation between the position of the terminal and the coverage range and the coverage time;

the ephemeris information of the satellite may include user information of the terminal, service time corresponding to the user information, and the like, and the time information may be determined according to the service time of the terminal.

The terminal can determine the time information through the acquired ephemeris information, and can also determine the time information through the base station according to the acquired ephemeris information and acquire the time information indicated by the base station.

After the terminal acquires the time information, the time for carrying out data communication by using the service satellite can be determined, so that when the data to be transmitted exists, the data is transmitted according to the time information. And further, phenomena such as terminal data transmission abnormity or data missing transmission caused by satellite coverage limitation are reduced, and the reliability of data transmission is improved.

In some embodiments, as shown in fig. 3, the determining the time information of the data transmission includes:

step S201, reporting the position information of the terminal to a base station; wherein the location information is used for the base station to determine the time information of the terminal for communication through the service satellite;

step S202, receiving the time information sent by the base station.

Here, time information for data communication by the serving satellite of the terminal is determined by the base station. The terminal reports the position information of the terminal to the base station, and the base station can search the information of the corresponding target satellite according to the position information of the terminal and determine the time information according to the acquired ephemeris information of the target satellite and the like.

Therefore, the terminal can report the position information to the base station, receive the time information issued by the base station and receive and send data according to the time information.

For example, the terminal may report its location information to the base station before data transmission is required, and receive time information sent by the base station according to the location information. If the terminal determines that the communication can be carried out through the service satellite at present through the time information, the data to be transmitted can be directly sent based on the scheduling of the base station; if the terminal determines that the communication can not be carried out through the service satellite at present through the time information, the terminal can wait according to the time information and then transmit the data to be transmitted when the communication can be carried out.

In another embodiment, the terminal may report its own location information every predetermined time period, receive time information issued by the base station, and determine a time period for performing data communication according to the time information.

Therefore, the terminal can acquire the time information of data communication through the service satellite in a mode of reporting the position information of the terminal, and then perform data communication according to the time information. On one hand, the calculation amount of determining the time information by the user is reduced, and the processing efficiency is improved; on the other hand, the situations of data transmission failure and data leakage are reduced.

In some embodiments, the method further comprises:

Since the terminal may not always perform data communication through the service satellite at any time, the terminal may first perform data buffering if there is data to be transmitted. And selecting a time period for transmitting data to be transmitted according to the determined time information of data communication through the service satellite.

In an embodiment, when there is data to be transmitted, it may be determined whether there is a current time period in which data communication can be performed through time information, and if so, the data to be transmitted may be directly transmitted based on scheduling of a base station; and if the current time period is not in the data communication time period, caching the data to be sent, and transmitting the data to be sent through the satellite according to the time period which can be communicated with the satellite and is indicated by the time information.

In another embodiment, the data to be sent can be directly cached when the data to be sent exists. If the time information indicates that the current time period is in a time period in which data communication can be carried out, sending the cached data to be sent; and if the time information indicates that the time information is not in the time period in which the data communication can be carried out currently, suspending sending the data to be sent until the time period in which the data communication can be carried out is reached, and then sending the cached data to be sent. The judgment of the data processing mode to be sent can be reduced, and the cache is uniformly carried out, so that the reliability of data processing is improved.

Through the above mode, the data to be sent is cached, and the sending of the data is delayed under the condition that the coverage of the service satellite is limited, so that the phenomena of data sending abnormity and data missing are reduced.

and caching the data packet to be sent.

In the embodiment of the present disclosure, data to be transmitted may be reassembled into one or more data packets to be transmitted. The reassembled data packet to be sent can be sent in the time period indicated by the time information. Therefore, the data amount of the reassembled data packet to be sent may be less than or equal to the data amount that can be sent in the duration of the time period indicated by the time information. Thus, the terminal can transmit at least one data packet to be transmitted in the time period indicated by the time information.

If the data volume of the data to be sent is large, the data to be sent can be packaged into a plurality of data packets to be sent in a recombination mode, and the data packets are sent in one time period or a plurality of time periods indicated by the time information.

The reorganization of data to be transmitted herein includes, but is not limited to: and recombining data to be transmitted through data compression.

In one embodiment, the method further comprises:

before the time period indicated by the time information, recombining the data to be sent to obtain the data packet to be sent; therefore, when the time which can be communicated with the satellite and is indicated by the time information arrives, the formed data packet to be sent can be directly sent based on the scheduling of the base station, the transmission rate is improved, and the time period which can be communicated with the satellite is fully and effectively utilized.

Here, the reassembly of the data to be transmitted may include a process of sorting and packing the data into a data packet to be transmitted according to the data type or data within a predetermined period of time.

responding to the existence of data to be sent, and recombining the data to be sent in a preset time period into a data packet to be sent; wherein the predetermined duration is agreed by a protocol or specified by a base station.

In the embodiment of the present disclosure, the data within the predetermined time period may be reassembled into the data packet and buffered. The predetermined duration may be predetermined by a protocol or preset by the terminal, or may be obtained through a signaling sent by the base station. The predetermined length of time may be an absolute length of time, e.g., n milliseconds; or a logical time length, e.g., m time slots, etc.

When the terminal needs to send data, the data to be sent in a preset time length can be recombined to form a data packet, and the data packet is sent according to the time frequency resource indicated by the base station in the time period corresponding to the time information.

It is considered that there may be a delay with respect to a predetermined transmission time of the data to be transmitted itself when the data to be transmitted is transmitted by the terminal within a period indicated by the time information of data transmission through the serving satellite. Or the predetermined transmission sequence of each data packet in the data to be transmitted may be changed. Therefore, in the process of generating the data packet by recombining the data to be transmitted, the predetermined transmission sequence of the data to be transmitted can be carried in the data packet through the identification information, and the receiving end is informed of the rule of the predetermined data to be transmitted or when the data to be transmitted is transmitted to the receiving end, so that the receiving end can conveniently perform subsequent processing.

Here, the predetermined transmission time may be a time generated by the data to be transmitted, or may be a time carried in the data to be transmitted. The predetermined transmission sequence may be a sequence in which data to be transmitted is generated, or may be priority information included in the data to be transmitted.

In addition, the identification information may include various other identification information such as a user identifier and a network identifier in addition to the predetermined transmission sequence, so that the receiving end can identify the source of the data through the identification information.

The service satellite of the terminal may provide a communication service to the terminal during a period determined by the time information, and thus, the terminal may transmit data to be transmitted through the service satellite.

Here, the terminal may send the data to be sent in a random access procedure. That is, the data to be transmitted is carried in the message for random access and transmitted to the base station. For example, the terminal may send the data to be sent through MSG3, MSG1, MSG a, or the like in MSG (Message, random access Message).

The message for random access may also include indication information while carrying data to be transmitted. The indication information may be used to indicate whether data to be transmitted subsequently is not carried in the current message. Therefore, the base station can carry out targeted resource scheduling conveniently according to the indication information.

For example, if the indication information indicates that there is no data to be sent temporarily in the following, the base station may not schedule the time-frequency resource for a period of time after receiving the current message; if the indication information indicates that data is to be transmitted subsequently, the base station may schedule corresponding time-frequency resources for the data to be transmitted, so that the terminal continues to transmit the data.

Therefore, when no data to be sent subsequently exists, unnecessary scheduling instructions of the base station can be reduced, signaling overhead is saved, and data transmission efficiency is improved.

When the terminal transmits the data to be transmitted to the base station by using the message for random access, the message can simultaneously carry an indication whether the data to be transmitted is still to be transmitted subsequently, that is, the data to be transmitted is not the data to be transmitted carried in the message for random access. If the indication information indicates that the data to be sent subsequently exists, the data volume of the subsequent data to be sent can be carried at the same time. For example, in the message for random access, a first data packet to be sent is carried, and at the same time, an indication that a second data packet to be sent is still carried. At this time, the data size of the second data packet to be sent may also be indicated at the same time.

Therefore, the base station can conveniently schedule the time-frequency resource with the proper size according to the indication information and provide the time-frequency resource for the terminal to continuously transmit the subsequent data packet, and the data transmission efficiency is improved.

As shown in fig. 4, an embodiment of the present disclosure provides a data transmission method, where the method is applied in a base station, and includes:

s301, receiving position information of a terminal;

s302, determining a service satellite of the terminal according to the position information of the terminal;

and S303, determining the time information of the terminal for communication through the service satellite according to the service satellite.

Here, time information for data communication by the serving satellite of the terminal is determined by the base station. And the base station receives the position information reported by the terminal, and can search the information of the corresponding target satellite according to the position information of the terminal and determine the time information according to the acquired ephemeris information of the target satellite and the like.

The base station may determine a serving satellite for the terminal upon receiving the location information for the terminal. The base station can also send time information to the terminal for the terminal to determine the time for uploading data.

S302, determining a service satellite of the terminal according to the location information of the terminal, which may include:

and selecting a satellite with a coverage range including the terminal as a service satellite of the terminal according to the position information of the terminal.

For example, if the terminal is located in the coverage of a plurality of satellites, a satellite that is within the coverage and can provide the largest communication bandwidth or the largest transmission rate is selected as the serving satellite of the terminal according to the location information of the terminal.

The base station may not issue the time information, but only issue data to the terminal according to the time information.

In some embodiments, the method further comprises:

In the embodiment of the disclosure, when the base station has data to be transmitted to the terminal, the data to be transmitted may be transmitted within a time period in which the serving satellite of the terminal may perform data communication according to the time information.

Similar to the data uploaded by the terminal, the base station can directly issue the data or delay the data issuing according to the time information. Therefore, the situations that the data sent by the base station is abnormal or the terminal cannot receive the data and the like under the condition that the coverage of the service satellite is limited are reduced, and the reliability of data transmission is improved.

and caching the data packet to be transmitted.

When the data to be transmitted exists in the base station, the data to be transmitted can be recombined and cached, and the data to be transmitted is transmitted to the terminal within the time interval indicated by the time information.

In an embodiment, the base station can recombine the data to be transmitted into the data packet to be transmitted, and if the data packet to be transmitted is just in the time interval indicated by the time information when being recombined, the data packet to be transmitted can be directly transmitted; and if the current time is not in the time period indicated by the time information, the time is issued when the time period indicated by the time information is reached.

In another embodiment, the base station may also determine whether the data to be transmitted exists in the time period indicated by the time information according to the time information, and if so, the base station does not perform reassembly and packaging, and directly transmits the data to be transmitted to the terminal; if not, the data packets are recombined and packed into the data packets to be sent, and the data packets to be sent which are recombined and packed are sent again in the time period indicated by the arrival time information.

responding to the existence of the data to be issued, and recombining the data to be issued within a preset time length into the data packet to be issued; wherein the predetermined time period is less than or equal to a time period indicated by the time information.

In the embodiment of the present disclosure, the data within the predetermined time period may be reassembled into the data packet and buffered. The predetermined length of time may be an absolute length of time, e.g., n milliseconds; or a logical time length, e.g., m time slots, etc.

When the base station needs to send the data, the data which needs to be sent in a preset time length can be recombined to form a data packet, and the recombined data packet is sent in a time period corresponding to the time information.

In some embodiments, the data packet to be sent down includes: identification information; the identification information is at least used for identifying the preset sending time of the data to be transmitted in the data packet to be transmitted before the recombination.

It is considered that there may be a delay with respect to a predetermined transmission time of the data to be transmitted itself when the data to be transmitted is transmitted within a period indicated by time information in which the terminal can perform data transmission through the serving satellite. Therefore, in the process of generating the data packet by recombining the data to be issued, the preset sending time of the data to be issued can be carried in the data packet through the identification information, so that the terminal can conveniently identify the time of the data to be issued and perform subsequent processing.

Here, the predetermined transmission time may be a time when the data to be transmitted is generated, or may be a time carried in the data to be transmitted.

Besides, the identification information may include various other identification information such as a user identifier and a network identifier in addition to the predetermined transmission time, so that the terminal can identify the source of the data through the identification information.

In some embodiments, the method further comprises:

The base station can send data to the terminal in the time period indicated by the time information and can also receive the data reported by the terminal. The data to be sent reported by the terminal may be data generated in real time and directly sent based on the scheduling of the base station, or data generated before the time period indicated by the time information and sent to the base station under the scheduling of the base station after the time period arrives.

In the embodiment of the disclosure, the base station receives data to be sent reported by the terminal in the terminal random access process. That is, the data to be transmitted is carried in the message for random access and transmitted to the base station. For example, the terminal may transmit the data to be transmitted through MSG3 or MSG1 in MSG (Message, random access Message). Therefore, the base station can acquire the data reported by the terminal through the random access message in the process of the random access of the terminal.

When the terminal sends data to be sent in the random access process, the indication information can be contained in the random access message. The base station can know whether the terminal has data to be sent and is not sent through the indication information.

If the data to be sent is not sent, a scheduling instruction can be sent to the terminal, and the terminal is scheduled to continue sending the time-frequency resources of the data; if no data to be sent subsequently exists, the base station can stop sending the scheduling command within a preset time period, so that the signaling overhead is saved, and the data transmission efficiency is improved.

The embodiment of the present disclosure further provides a data transmission method, which is applied to a terminal, and includes:

determining a service satellite of the terminal;

acquiring ephemeris information of the service satellite;

and carrying out data transmission based on the ephemeris information.

In some embodiments, the determining the serving satellite of the terminal includes:

and determining a service satellite of the terminal according to the position information of the terminal.

In some embodiments, the performing data transmission based on ephemeris information includes:

the ephemeris information includes time information; wherein the time information is used for indicating the time when the terminal communicates through a service satellite;

and transmitting the data according to the time information.

Here, the terminal may acquire information of its own serving satellite through the base station, and may also determine the serving satellite according to a predetermined service. According to the service satellite, the terminal can obtain ephemeris information corresponding to the service satellite. The ephemeris information may include user information of the terminal, service time corresponding to the user information, and the like. The terminal can determine, according to ephemeris information of the service satellite, which time periods the service satellite can provide service for itself, and which time periods the coverage of the service satellite is limited, and the like.

Therefore, the terminal can determine time information when the terminal can perform data transmission by using the ephemeris information of the serving satellite, and perform data transmission according to a time period indicated by the time information.

In an embodiment, the terminal may report its location information to the base station, and the base station determines a serving satellite corresponding to the terminal according to the location information. The base station can also determine the service satellite of the terminal and ephemeris information corresponding to the service satellite, and send the ephemeris information to the terminal, and then the terminal confirms the time information and transmits data according to the time information.

In this way, the terminal can transmit the data to be transmitted in the time period when the service satellite can provide the data transmission service, thereby reducing the phenomena of data transmission failure, repeated data transmission attempts, data missing transmission and the like caused by the limited coverage of the service satellite.

The disclosed embodiments also provide the following examples:

1. the time information of data transmission is determined, and the base station and the terminal need to know the time information that the terminal can transmit or receive data, wherein the time information can be absolute time point information or information of a time window. The method can be realized by the following steps:

the first method is as follows: terminal determination

The terminal obtains ephemeris information of the serving satellite, and determines a target satellite and a transmission time. The serving satellite may contain ephemeris information for one or more satellites. The ephemeris information includes the availability of satellite services and other information relating to user access.

The second method comprises the following steps: base station determination

The terminal reports the position information of the terminal, and the base station informs the terminal of the information of the target satellite and the sending time information based on the position information of the terminal. The information for notification may be UE-specific information or common information for a group of users. The information may be notified to the terminal through RRC signaling, MAC CE, or physical layer signaling.

2. Data caching

And caching the data within a preset time length and recombining the data packets. The predetermined time period may be preset, or may be notified to the terminal by the base station through signaling. The predetermined time period may be an absolute time period or a logical time period.

When the terminal needs to send data, the terminal recombines the data packets needing to be sent within a preset time length to form a data packet, and sends the data packet on the time frequency resource position indicated or configured by the base station.

When the terminal needs to receive data, the base station will recombine the data packets that need to be sent within a preset time length to form one or more data packets, and add identification information into the data packets, where the identification information may be time information used to indicate the time that the data packets are scheduled to be sent.

3. Data transmission

Sending the cache data in the random access process:

when the terminal needs to transmit data, the terminal transmits the reassembled data in the MSG3 of the random access procedure.

The terminal indicates whether the indication information of the subsequent data transmission is available:

the terminal adds the indication information of whether there is data transmission on the MSG1 or MSG3 in the random access process, and when there is data to be transmitted, it can also carry the information of the size of the data packet, so as to facilitate the scheduling of data transmission by the base station.

And when the terminal indicates that the data to be transmitted does not exist, the base station does not transmit a scheduling instruction to the terminal within a preset time period.

As shown in fig. 5, an embodiment of the present disclosure further provides a data transmission apparatus 500, which is applied in a terminal, and includes:

a first determining module 501 configured to determine time information of data transmission, wherein the time information is used for indicating a time when the terminal communicates through a serving satellite.

In some embodiments, the first determining module comprises:

In some embodiments, the apparatus further comprises:

In some embodiments, the first cache module comprises:

In some embodiments, the first reassembly sub-module comprises:

In some embodiments, the sending module includes:

As shown in fig. 6, an embodiment of the present disclosure further provides a data transmission apparatus 600, which is applied in a base station, and includes:

a first receiving module 601 configured to receive location information of a terminal;

a second determining module 602 configured to determine a serving satellite of the terminal according to the location information of the terminal;

a third determining module 603 configured to determine, according to the service satellite, time information of the terminal communicating through the service satellite.

In some embodiments, the apparatus further comprises:

In some embodiments, the second cache module comprises:

In some embodiments, the third reassembly sub-module comprises:

In some embodiments, the apparatus further comprises:

In some embodiments, the second receiving module comprises:

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 7 is a block diagram of a communication device according to an embodiment of the present disclosure. The communication device may be a terminal. For example, the communication device 700 may be a mobile phone, a computer, a digital broadcast user device, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 7, a communication device 700 may include at least one of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.

The processing component 702 generally controls overall operation of the communication device 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 702 may include at least one processor 720 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 702 can include at least one module that facilitates interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

The memory 704 is configured to store various types of data to support operation at the communication device 700. Examples of such data include instructions for any application or method operating on the communication device 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power component 706 provides power to the various components of the communication device 700. The power components 706 may include a power management system, at least one power source, and other components associated with generating, managing, and distributing power for the communication device 700.

The multimedia component 708 includes a screen that provides an output interface between the communication device 700 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes at least one touch sensor to sense touch, slide, and gesture on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect a wake-up time and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 708 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the communication device 700 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a Microphone (MIC) configured to receive external audio signals when the communication device 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 704 or transmitted via the communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 714 includes at least one sensor for providing various aspects of status assessment for the communication device 700. For example, the sensor assembly 714 may detect an open/closed state of the device 700, the relative positioning of components, such as a display and keypad of the communication device 700, the sensor assembly 714 may also detect a change in the position of the communication device 700 or a component of the communication device 700, the presence or absence of user contact with the communication device 700, orientation or acceleration/deceleration of the communication device 700, and a change in the temperature of the communication device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 716 is configured to facilitate wired or wireless communication between the communication device 700 and other devices. The communication device 700 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the communication device 700 may be implemented by at least one Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor or other electronic component for performing the above-described method.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 704 comprising instructions, executable by the processor 720 of the communication device 700 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

As shown in fig. 8, an embodiment of the present disclosure shows a structure of another communication device. The communication device may be a base station according to embodiments of the present disclosure. For example, the communication device 800 may be provided as a network device. Referring to fig. 8, the communication device 800 includes a processing component 822, which further includes at least one processor, and memory resources, represented by memory 832, for storing instructions, such as application programs, that are executable by the processing component 822. The application programs stored in memory 832 may include one or more modules that each correspond to a set of instructions. Further, the processing component 822 is configured to execute instructions to perform any of the methods described above as applied to the communication device.

The communication device 800 may also include a power component 826 configured to perform power management of the communication device 800, a wired or wireless network interface 850 configured to connect the communication device 800 to a network, and an input/output (I/O) interface 858. The communication device 800 may operate based on an operating system stored in memory 832, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A data transmission method is applied to a terminal and comprises the following steps:

2. The method of claim 1, wherein the determining time information for data transmission comprises:

and receiving the time information issued by the base station.

3. The method of claim 1, wherein the method further comprises:

4. The method of claim 3, wherein the buffering the data to be sent in response to the presence of the data to be sent comprises:

and caching the data packet to be sent.

5. The method of claim 4, wherein the reassembling the data to be transmitted into a data packet to be transmitted according to the time information in response to the presence of the data to be transmitted comprises:

6. The method according to claim 4 or 5, wherein the data packet to be transmitted comprises: identification information; the identification information is at least used for identifying a preset sending sequence of data to be sent in the data packet to be sent.

7. The method according to any one of claims 3 to 6, wherein the transmitting the data to be transmitted in the time period indicated by the time information includes:

8. The method of claim 7, wherein the message for random access comprises: and the indication information is used for indicating whether the indication information of the data to be sent except the data to be sent carried in the message for random access exists.

9. The method according to claim 8, wherein if the indication information indicates that there is data to be transmitted other than the data to be transmitted carried in the message for random access, the message for random access further includes: the data amount of the data to be transmitted, which is not carried in the message for random access.

10. A data transmission method, wherein the method is applied to a base station, and comprises the following steps:

receiving position information of a terminal;

11. The method of claim 10, wherein the method further comprises:

12. The method of claim 11, wherein the buffering the data to be delivered in response to the presence of the data to be delivered comprises:

and caching the data packet to be transmitted.

13. The method of claim 12, wherein the responding to the existence of the data to be transmitted, and the re-assembling the data to be transmitted into the data packet to be transmitted according to the time information comprises:

14. The method according to claim 12 or 13, wherein the data packet to be sent down includes: identification information; the identification information is at least used for identifying a preset sending sequence of the data to be sent in the data packet to be sent.

15. The method of any of claims 10 to 14, wherein the method further comprises:

16. The method of claim 15, wherein the receiving data to be sent reported by the terminal in the time period indicated by the time information comprises:

17. The method of claim 16, wherein the message for random access comprises: indicating information for indicating whether data to be transmitted other than the data to be transmitted carried in the message for random access exists; the method further comprises the following steps:

18. A data transmission apparatus, wherein the apparatus is applied to a terminal, and comprises:

19. The apparatus of claim 18, wherein the first determining means comprises:

20. The apparatus of claim 18, wherein the apparatus further comprises:

21. The apparatus of claim 20, wherein the first cache module comprises:

22. The apparatus of claim 21, wherein the first reassembly sub-module comprises:

23. The apparatus according to claim 21 or 22, wherein the data packet to be transmitted comprises: identification information; the identification information is at least used for identifying a preset sending sequence of data to be sent in the data packet to be sent.

24. The apparatus of any one of claims 20 to 23, wherein the transmitting means comprises:

25. The apparatus of claim 24, wherein the message for random access comprises: and the indication information is used for indicating whether the indication information of the data to be sent except the data to be sent carried in the message for random access exists.

26. The apparatus of claim 25, wherein if the indication information indicates that there is data to be transmitted other than the data to be transmitted carried in the message for random access, the message for random access further comprises: the data amount of the data to be transmitted, which is not carried in the message for random access.

27. A data transmission apparatus, wherein the apparatus is applied to a base station, comprising:

28. The apparatus of claim 27, wherein the apparatus further comprises:

29. The apparatus of claim 28, wherein the second cache module comprises:

30. The apparatus of claim 29, wherein the third recombination submodule comprises:

31. The apparatus according to claim 29 or 30, wherein the pending data packet includes: identification information; the identification information is at least used for identifying a preset sending sequence of the data to be sent in the data packet to be sent.

32. The apparatus of any one of claims 27 to 31, wherein the apparatus further comprises:

33. The apparatus of claim 32, wherein the second receiving means comprises:

34. The apparatus of claim 33, wherein the message for random access comprises: indicating information for indicating whether data to be transmitted other than the data to be transmitted carried in the message for random access exists; the device further comprises:

35. A communication device, wherein the communication device comprises at least: a processor and a memory for storing executable instructions operable on the processor, wherein:

the processor is configured to execute the executable instructions to perform the steps of the data transmission method as claimed in any one of claims 1 to 9 or 10 to 17.

36. A non-transitory computer-readable storage medium having stored therein computer-executable instructions that, when executed by a processor, implement the steps in the data transmission method provided in any one of claims 1 to 9 or 10 to 17.