CN112585888B

CN112585888B - Data transmission method and device, communication equipment and storage medium

Info

Publication number: CN112585888B
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: 2023-12-01
Anticipated expiration: 2040-11-24
Also published as: CN112585888A; WO2022109805A1

Abstract

The embodiment of the disclosure provides a data transmission method and device, communication equipment and 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 communication through a service satellite.

Description

Data transmission method and device, communication equipment and storage medium

Technical Field

The embodiment of the disclosure relates to the field of wireless communication, but is not limited to the field of wireless communication, and particularly relates to a data transmission method and device, a communication device and a storage medium.

Background

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

Disclosure of Invention

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

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

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

reporting the position information of the terminal to a base station; wherein the location information is used for a 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:

in response to the existence of data to be sent, caching the data to be sent;

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

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

responding to the existence of data to be sent, and reorganizing 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 reorganizing the data to be sent into a data packet to be sent according to the time information in response to the existence of the data to be sent includes:

responding to the existence of data to be transmitted, and reorganizing the data to be transmitted in a preset time length into a data packet to be transmitted; wherein, the predetermined time length is used for sending the data packet; wherein the predetermined time period 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 within the period indicated by the time information includes:

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

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

In some embodiments, if the indication information indicates that there is data to be sent other than the data to be sent carried in the message for random access, the message for random access further includes: and 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 embodiments of the present disclosure, there is provided a data transmission method, which is applied to a base station, including:

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:

in response to the existence of data to be issued, caching the data to be issued;

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

In some embodiments, the responding to the existence of the data to be issued, caching the data to be issued 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 issued.

In some embodiments, the responding to the existence of the data to be issued, reorganizing the data to be issued into data packets to be issued according to the time information, including:

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

In some embodiments, the data packet to be issued 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 transmitted, which is reported by the terminal, in the period indicated by the time information.

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

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

In some embodiments, the message for random access includes: indication 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 steps of:

responding to the indication information in the message for random access to indicate that the data to be transmitted except the data to be transmitted carried in the message for random access exist, and issuing a scheduling instruction for indicating resources for a terminal to transmit the data; or (b)

Stopping issuing the scheduling instruction within a preset period of time in response to the indication information in the message for random access indicating that no data to be transmitted exists except for the data to be transmitted carried in the message for random access; wherein the duration of the predetermined period of time is less than or equal to the duration indicated by the time information.

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

and the first determining module is configured to determine 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 some embodiments, the first determining module includes:

the first reporting sub-module is configured to report the position information of the terminal to the base station; wherein the location information is used for a 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 caching module is configured to respond to the existence of data to be sent and cache the data to be sent;

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

In some embodiments, the first buffer module includes:

the first reorganization submodule is configured to reorganize the data to be sent into a data packet to be sent according to the time information in response to the existence of the data to be sent;

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

In some embodiments, the first reorganization submodule includes:

a second reorganization submodule, configured to reorganize data to be sent in a preset time length into a data packet to be sent in response to the existence of the data to be sent; wherein the predetermined time period is agreed by a protocol or specified by a base station.

In some embodiments, the first transmitting module includes:

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

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

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

the second determining module is configured to determine a service satellite of the terminal according to the position 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 caching 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 period indicated by the time information.

In some embodiments, the second buffer module includes:

the third recombination submodule is configured to respond to the existence of data to be issued and recombine the data to be issued into a data packet to be issued according to the time information;

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

In some embodiments, the third subset submodule includes:

a fourth reconfiguration sub-module configured to reconfigure to-be-delivered data within a predetermined period of time to the to-be-delivered data packet in response to the presence of the to-be-delivered data; wherein the predetermined time period 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 data to be sent, which is reported by the terminal, in a period indicated by the time information.

In some embodiments, the second receiving module comprises:

and the second receiving submodule is configured to receive a message for random access sent by the terminal in a 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 includes: indication information for indicating whether data to be transmitted other than the data to be transmitted carried in the message for random access exists; the apparatus further comprises:

a transmitting module configured to transmit a scheduling instruction for indicating resources of a terminal to transmit data, in response to the indication information in the message for random access indicating that there is data to be transmitted except for the data to be transmitted carried in the message for random access; or (b)

A stopping module configured to stop issuing the scheduling instruction within a predetermined period of time in response to the indication information in the message for random access indicating that there is no data to be transmitted other than the data to be transmitted carried in the message for random access; wherein the duration of the predetermined period of time 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 device including at least: a processor and a memory for storing executable instructions capable of executing on the processor, wherein:

the processor is configured to execute the executable instructions to perform steps in any of the data transmission methods described above when the executable instructions are executed.

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 in any of the data transmission methods described above.

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

Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment;

FIG. 2 is a flowchart illustrating a method of data transmission according to an exemplary embodiment;

FIG. 3 is a flow chart II illustrating a method of data transmission according to an exemplary embodiment;

FIG. 4 is a flowchart III illustrating a method of data transmission according to an exemplary embodiment;

fig. 5 is a block diagram illustrating a data transmission apparatus according to an exemplary embodiment;

fig. 6 is a block diagram two of a data transmission apparatus according to an exemplary embodiment;

fig. 7 is a schematic diagram of a communication device shown in accordance with an exemplary embodiment;

fig. 8 is a schematic diagram of a communication device according to an exemplary embodiment.

Detailed Description

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

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of 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 or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the 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.

To better describe any embodiment of the present disclosure, an embodiment of the present disclosure is exemplified by an application scenario of access control.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the 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: a number of terminals 11 and a number of base stations 12.

Where the terminal 11 may be a device providing voice and/or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the terminal 11 may be an internet of things terminal such as a sensor device, a mobile phone (or "cellular" phone) and a computer with an internet of things terminal, for example, a stationary, portable, pocket, hand-held, computer-built-in or vehicle-mounted device. Such as a Station (STA), subscriber unit (subscriber unit), subscriber Station (subscriber Station), mobile Station (mobile), remote Station (remote Station), access point, remote terminal (remote terminal), access terminal (access terminal), user device (user terminal), user agent (user agent), user equipment (user device), or user terminal (user equipment). Alternatively, the terminal 11 may be an unmanned aerial vehicle device. Alternatively, the terminal 11 may be a vehicle-mounted device, for example, a car computer having a wireless communication function, or a wireless terminal externally connected to the car computer. Alternatively, the terminal 11 may be a roadside device, for example, a street lamp, a signal lamp, or other roadside devices having a wireless communication function.

The base station 12 may be a network-side device in a wireless communication system. Wherein the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication,4G) system, also known as a long term evolution (Long Term Evolution, LTE) system; alternatively, the wireless communication system may be a 5G system, also known as a New Radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next generation system of the 5G system. Among them, the access network in the 5G system may be called NG-RAN (New Generation-Radio Access Network, new Generation radio access network).

Wherein the base station 12 may be an evolved base station (eNB) employed in a 4G system. Alternatively, the base station 12 may be a base station (gNB) in a 5G system employing a centralized and distributed architecture. When the base station 12 employs a centralized and distributed architecture, it typically includes a Centralized Unit (CU) and at least two Distributed Units (DUs). A protocol stack of a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a medium access control (Media Access Control, MAC) layer is provided in the centralized unit; a Physical (PHY) layer protocol stack is provided in the distribution unit, and the specific implementation of the base station 12 is not limited by the embodiment of the present disclosure.

A wireless connection may be established between the base station 12 and the terminal 11 over a wireless air interface. In various embodiments, the wireless air interface is a fourth generation mobile communication network technology (4G) standard-based wireless air interface; or, the wireless air interface is a wireless air interface 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-based technology standard of a next generation mobile communication network.

In some embodiments, an E2E (End to End) connection may also be established between terminals 11. Such as V2V (vehicle to vehicle, vehicle-to-vehicle) communications, V2I (vehicle to Infrastructure, vehicle-to-road side equipment) communications, and V2P (vehicle to pedestrian, vehicle-to-person) communications among internet of vehicles communications (vehicle to everything, V2X).

In some embodiments, the above wireless communication system may further comprise 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 (Mobility Management Entity, MME) in an evolved packet core network (Evolved Packet Core, EPC). Alternatively, the network management device may be other core network devices, such as a Serving GateWay (SGW), a public data network GateWay (Public Data Network GateWay, PGW), a policy and charging rules function (Policy and Charging Rules Function, PCRF) or a home subscriber server (Home Subscriber Server, HSS), etc. The embodiment of the present disclosure is not limited to the implementation form of the network management device 13.

The new generation of new internet applications such as AR (Augmented Reality ), VR (Virtual Reality) and vehicle-to-vehicle communication have increasingly made higher demands on wireless communication technologies, and the continuous evolution of the wireless communication technologies is driven to meet the demands of the applications. Currently, cellular mobile communication technology is in the evolution phase of the new generation technology. An important feature of the new generation of technology is the flexible configuration that supports multiple service types. As different service types have different requirements for wireless communication technologies, for example, the main requirements of the type of the eMBB (Enhanced Mobile Broadband ) service are focused on the aspects of large bandwidth, high speed and the like; the major demands of the URLLC (Ultra-reliable and Low Latency Communications, high reliability and low latency communication) traffic type are focused on higher reliability and low latency; the main requirements of mctc (Massive MachineType Communication, large-scale machine type communication) traffic types are focused on large connection numbers. New generation wireless communication systems therefore require flexible and configurable designs to support the transmission of multiple traffic types.

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

First, extended coverage: for areas with high cost, such as ocean, desert, remote mountain areas and the like, which cannot be covered by the current cellular communication system, the problem of communication can be solved through satellite communication.

Second, emergency communication: in extreme cases where disasters such as earthquakes and the like have occurred that render the infrastructure for cellular communications unusable, a communication connection can be established quickly using satellite communications.

Third, providing industry applications: for example, for long-distance transmission delay sensitive services, the delay of service transmission can be reduced by satellite communication.

It is expected that in future wireless communication systems, the satellite communication system and the terrestrial cellular communication system will gradually achieve deep convergence, and truly achieve intelligent networking.

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

step S101, determining time information of data transmission, where the time information is used to indicate a time when the terminal communicates through a service satellite.

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

For satellite communications, coverage problems in certain scenarios can be effectively resolved. For example, the internet of things service is an important application service for satellite communication. The problem of connection in remote or islanding scenarios can be solved by satellite communication. In the initial stage of low orbit satellite deployment, all-weather coverage cannot be achieved due to the limitation of the number of satellites, and meanwhile, part of satellites do not have an interstellar link. In this case, the terminal of the internet of things cannot perform data transmission.

Based on this, the embodiments of the present disclosure provide the above method, by determining time information of data transmission, determining a timing at which a satellite provides a data transmission service to complete transmission of data.

Here, the time information is used to indicate the time at which the terminal communicates through the service satellite. The service satellite may provide ephemeris information including one or more target satellites for establishing a communication connection with the terminal and enabling data transmission of the terminal. The ephemeris information of the satellite contains the availability of satellite services, as well as other information related to the user. Thus, the time information may be determined from the ephemeris information, the time information having an association with the ephemeris information, an exemplary representation of such an association may be at least one of:

The ephemeris information of the satellite comprises coverage and coverage time for providing data communication service; the time information is determined according to the relationship between the position of the terminal and the coverage area 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 exist, the data transmission is carried out according to the time information. And further, the phenomena of abnormal data transmission or data missing transmission and the like of the terminal caused by limited satellite coverage 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 a base station to determine the time information of the terminal for communication through the service satellite;

Step S202, receiving the time information issued by the base station.

Here, time information for the service satellite of the terminal to perform data communication 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 target satellite ephemeris information and the like.

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

For example, before data transmission is required, the terminal may report its own location information to the base station, and receive time information sent by the base station according to the location information. If the terminal determines that the communication can be performed through the service satellite currently 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 communication can not be performed through the service satellite currently through the time information, waiting can be performed according to the time information, and data to be transmitted can be sent when the period of communication can be performed is reached.

In another embodiment, the terminal may report its own location information once every predetermined time period, and receive time information sent by the base station, so as to determine a period of data communication according to the time information.

Therefore, the terminal can acquire the time information for data communication through the service satellite in a mode of reporting the position information of the terminal, and further perform data communication according to the time information. On one hand, the calculation amount of self-determination time information is reduced, and the processing efficiency is improved; on the other hand, the situations of data transmission failure and data missing are reduced.

In some embodiments, the method further comprises:

in response to the existence of data to be sent, caching the data to be sent;

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

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

In another embodiment, the data to be transmitted may be cached directly when the data to be transmitted is present. If the time information indicates that the data communication can be carried out currently, the cached data to be sent are sent; if the time information indicates that the time is not in the period of data communication available, the data to be transmitted is suspended until the period of data communication available is reached, and the buffered data to be transmitted is transmitted. The judgment of the data processing mode to be sent can be reduced, and the data processing modes are uniformly cached, so that the reliability of data processing is improved.

By the method, the data to be transmitted is buffered, and the data transmission is delayed under the condition that the coverage of the service satellite is limited, so that the phenomena of abnormal data transmission and data missing are reduced.

and caching the data packet to be sent.

In the embodiment of the disclosure, the data to be sent may be reassembled into one or more data packets to be sent. The reassembled data packet to be transmitted may be transmitted within a period indicated by the time information. Therefore, the data amount of the reassembled data packet to be transmitted may be smaller than or equal to the data amount that can be transmitted for the period indicated by the time information. In this way, the terminal can transmit at least one data packet to be transmitted within the period indicated by the time information.

If the data quantity of the data to be transmitted is large, the data to be transmitted can be packaged into a plurality of data packets to be transmitted in a reorganization mode, and the data packets are transmitted 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 reorganizing the data to be transmitted through data compression.

In one embodiment, the method further comprises:

before the time period indicated by the time information, reorganizing the data to be sent to obtain the data packet to be sent; when the time indicated by the time information and capable of communicating with the satellite arrives, the formed data packet to be sent is directly sent based on the scheduling of the base station, so that the transmission rate is improved, and the time period capable of communicating with the satellite is fully and effectively utilized.

Here, the reorganization 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 a data type or data within a predetermined period of data.

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

In the embodiment of the disclosure, the data within the predetermined time period can be subjected to packet reassembly and buffering. The predetermined time length may be agreed by a protocol or preset by a terminal, or may be obtained through signaling issued by a base station. The predetermined length of time may be an absolute length of time, e.g., n milliseconds; but may also be 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 a 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 within a period indicated by time information in which the terminal can perform data transmission through the service satellite. Or the predetermined transmission sequence of each data packet in the data to be transmitted may be changed, etc. Therefore, in the process of recombining the data to be transmitted to generate the data packet, the preset transmission sequence of the data to be transmitted can be carried in the data packet through the identification information, so that the receiving end is informed of the rule or the time when the data to be transmitted are preset by the receiving end, and the receiving end is convenient to carry out subsequent processing.

Here, the predetermined transmission time may be a time generated by the data to be transmitted, or may be a time carried by itself in the data to be transmitted. The predetermined transmission order may be an order in which data to be transmitted is generated, priority information in the data to be transmitted, or the like.

In addition, the identification information can contain various other identification information such as user identification, network identification and the like besides the predetermined transmission sequence, so that the receiving end can conveniently identify the source of the data through the identification information.

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

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

The message for random access may also include indication information while carrying the data to be sent. The indication information may be used to indicate whether the data to be transmitted is not carried in the current message. Thus, the base station is convenient to conduct targeted resource scheduling according to the indication information.

For example, if the indication information indicates that there is no data to be transmitted in the following period, 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 the data to be transmitted subsequently still exists, the base station can schedule corresponding time-frequency resources for the data to be transmitted so that the terminal can continue to transmit the data.

Therefore, when no data to be transmitted is generated in the follow-up process, unnecessary scheduling instructions of the base station can be reduced, signaling overhead is saved, and data transmission efficiency is improved.

The terminal uses the message for random access to carry the data to be sent to the base station, and meanwhile, the message can carry the data to be sent which indicates whether the following data to be sent exists or not, namely the data to be sent except the data to be sent carried in the message for random access. If the indication information indicates that the data to be sent exists subsequently, the data quantity of the data to be sent subsequently can be carried simultaneously. For example, in a message for random access, a data packet carrying first data to be transmitted is carried, while a data packet indicating that there is also a second data packet to be transmitted is carried. At this time, the data size of the second data packet to be transmitted may also be indicated at the same time.

Therefore, the base station can conveniently schedule the time-frequency resource with proper size according to the indication information to provide the terminal for continuously transmitting 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, which is applied to 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;

s303, determining time information of the terminal for communication through the service satellite according to the service satellite.

Here, time information for the service satellite of the terminal to perform data communication is determined by the base station. The base station receives the position information reported by the terminal, 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 target satellite ephemeris information and the like.

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

S302, determining the service satellite of the terminal according to the position information of the terminal, which can include:

and selecting a satellite with coverage 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 located in the coverage and is capable of providing the maximum communication bandwidth or the maximum transmission rate is selected as a service satellite of the terminal according to the location information of the terminal.

The base station may not issue the time information, but issue data to the terminal only 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 according to the time information within a period in which the service satellite of the terminal can perform data communication.

Similar to uploading data by the terminal, the base station may directly issue data or delay issuing data according to the time information. Therefore, the situations that the base station transmits abnormal data 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 issued.

When the base station has data to be issued, the data to be issued can be recombined and cached and issued to the terminal in a period indicated by the time information.

In an embodiment, the base station may reorganize the data to be sent into the data packet to be sent, and if the reorganized data is in the period indicated by the time information when the reorganized data packet to be sent is located, the data packet to be sent may be directly sent; and if the time is not currently in the time period indicated by the time information, waiting for the time period indicated by the time information to be sent.

In another embodiment, the base station may also determine, according to the time information, whether the data to be sent is in a period indicated by the time information, and if so, directly send the data to be sent to the terminal without performing reassembly and packaging; and if the time interval is not within the time interval, carrying out reassembly and packaging to obtain a data packet to be transmitted, and waiting for the time interval indicated by the arrival time information to transmit the data packet to be transmitted, which is subjected to reassembly and packaging.

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

In the embodiment of the disclosure, the data within the predetermined time period can be subjected to packet reassembly and buffering. The predetermined length of time may be an absolute length of time, e.g., n milliseconds; but may also be a logical time length, e.g. m time slots, etc.

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

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

It is considered that there may be a delay with respect to the scheduled transmission time of the data to be issued itself when the data to be issued is transmitted within a period indicated by time information that the terminal can perform data transmission through the service satellite. Therefore, in the process of recombining the data to be issued to generate the data packet, 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 the subsequent processing can be carried out.

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.

In addition, the identification information may include, besides the predetermined transmission time, various other identification information such as a user identification, a network identification, etc., 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 may be data generated before a period indicated by the time information and sent to the base station under the scheduling of the base station until the period arrives.

In the embodiment of the disclosure, the base station receives data to be sent reported by the terminal in the random access process of the terminal. I.e. the data to be transmitted is carried in a 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 the MSG (Message), or the like. Therefore, the base station can acquire the data reported by the terminal through the random access message in the random access process of the terminal.

The message of random access can also contain indication information while the data to be transmitted is transmitted in the random access process of the terminal. The base station can know whether the terminal has data to be transmitted or not according to the indication information.

If the data to be transmitted are not transmitted, a scheduling instruction can be transmitted to the terminal, and the terminal is scheduled to continue transmitting the time-frequency resource of the data; if no data to be transmitted is available later, the base station can stop issuing the scheduling instruction within a preset period of time, so that signaling overhead is saved, and data transmission efficiency is improved.

The embodiment of the disclosure also provides a data transmission method, which is applied to a terminal and comprises the following steps:

determining a service satellite of the terminal;

obtaining ephemeris information of the service satellite;

and carrying out data transmission based on the ephemeris information.

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

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

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

the ephemeris information includes time information; the time information is used for indicating the time of the terminal for communication through a service satellite;

and carrying out the data transmission according to the time information.

Here, the terminal may acquire information of its own service satellite through the base station, or may determine the service satellite according to a predetermined service. According to the service satellite, the terminal can acquire 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 which time periods the service satellite can provide service for itself, which time periods the service satellite is limited in coverage, and the like according to the ephemeris information of the service satellite.

Therefore, the terminal can determine the time information that the terminal can perform data transmission through the ephemeris information of the service satellite, and perform data transmission according to the time period indicated by the time information.

In one embodiment, the terminal may report its own location information to the base station, and the base station determines, according to the location information, a service satellite corresponding to the terminal. The base station can also determine the service satellite of the terminal and the ephemeris information corresponding to the service satellite, send the ephemeris information to the terminal, confirm the time information by the terminal and transmit data according to the time information.

Therefore, the terminal can transmit the data to be transmitted in the period that the service satellite can provide the data transmission service, so that the phenomena of data transmission failure, repeated data transmission attempt, data missing transmission and the like caused by limited coverage of the service satellite are reduced.

Embodiments of the present disclosure also provide examples of:

1. determining time information of data transmission, wherein the base station and the terminal need to know the time information that the terminal can transmit or receive the data, and the time information can be absolute time point information or time window information. This can be achieved by:

mode one: terminal determination

The terminal obtains ephemeris information of the service satellite and determines the target satellite and the sending time. The service satellite may contain ephemeris information for one or more satellites. The ephemeris information contains the availability of satellite services and other information related to user access.

Mode two: 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 public information for a group of users. The information may be signaled to the terminal through RRC signaling, MAC CE or physical layer signaling.

2. Data caching

And caching the data in the preset time period and reorganizing the data packets. The predetermined time length may be preset, or may be signaled to the terminal by the base station. The predetermined time period may be an absolute time period or a logical time period.

When the terminal needs to send data, the terminal will reorganize the data packet needed to be sent in a preset time length to form a data packet, and send the data packet at the time-frequency resource position indicated or configured by the base station.

When the terminal needs to receive data, the base station will reorganize the data packets to be sent within a predetermined time period to form one or more data packets, and add identification information into the data packets, where the identification information may be time information, and is used to indicate the time when the data packets are scheduled to be sent.

3. Data transmission

Transmitting the buffer data in the random access process:

when the terminal needs to transmit data, the terminal transmits the recombined data in the MSG3 of the random access process.

Indication information of the terminal indicating whether there is transmission of subsequent data:

the terminal adds the indication information of whether the data is transmitted or not to the MSG1 or MSG3 in the random access process, and when the data to be transmitted exists, the terminal can also carry the information of the data packet size so as to facilitate the scheduling of the data transmission by the base station.

When the terminal indicates that there is no data to be transmitted, the base station does not transmit a scheduling instruction to the terminal for a predetermined period.

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

a first determining module 501 is configured to determine time information of data transmission, where the time information is used to indicate a time when the terminal communicates through a service satellite.

In some embodiments, the first determining module 501 includes:

In some embodiments, the apparatus 500 further comprises:

In some embodiments, the first buffer module includes:

In some embodiments, the first reorganization submodule includes:

In some embodiments, the first transmitting module includes:

As shown in fig. 6, the embodiment of the present disclosure further provides a data transmission apparatus 600, which is applied to 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 service satellite of the terminal according to the location information of the terminal;

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

In some embodiments, the apparatus 600 further comprises:

In some embodiments, the second buffer module includes:

In some embodiments, the third subset submodule includes:

In some embodiments, the apparatus 600 further comprises:

In some embodiments, the second receiving module comprises:

In some embodiments, the message for random access includes: indication information for indicating whether data to be transmitted other than the data to be transmitted carried in the message for random access exists; the apparatus 600 further comprises:

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

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, computer, digital broadcast user device, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or 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 call, data communication, camera operation, and recording operation. The processing component 702 may include at least one processor 720 to execute instructions to perform all or part 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, video, and the like. The memory 704 may be implemented by any type or combination of volatile or nonvolatile 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 disk.

The power supply 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 between the communication device 700 and the user that provides an output interface. 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 input signals from a user. The touch panel includes at least one touch sensor to sense touch, swipe, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also 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-facing camera and/or the rear-facing camera may receive external multimedia data when the communication device 700 is in an operational 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 focal length and optical zoom capabilities.

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 signals may be further stored in the memory 704 or transmitted via the communication component 716. In some embodiments, the audio component 710 further 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 a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 714 includes at least one sensor for providing status assessment of various aspects of the communication device 700. For example, the sensor assembly 714 may detect an on/off state of the communication device 700, a relative positioning of the components, such as a display and keypad of the communication device 700, the sensor assembly 714 may also detect a change in position of the communication device 700 or a component of the communication device 700, the presence or absence of a user's contact with the communication device 700, an orientation or acceleration/deceleration of the communication device 700, and a change in temperature of the communication device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects 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 gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 716 is configured to facilitate communication between the communication device 700 and other devices, either wired or wireless. 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 one exemplary embodiment, the communication component 716 receives broadcast signals 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), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components for performing the above-described methods.

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

As shown in fig. 8, an embodiment of the present disclosure shows the 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 that further includes at least one processor, and memory resources, represented by memory 832, for storing instructions, such as application programs, executable by the processing component 822. The application programs stored in memory 832 may include one or more modules each corresponding 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 TM, 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 disclosure 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 is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A data transmission method, wherein the method is applied to a terminal, comprising:

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;

the method further comprises the steps of: in response to the existence of data to be sent, caching the data to be sent; transmitting the data to be transmitted in a period indicated by the time information;

The sending the data to be sent in the period indicated by the time information comprises the following steps: and carrying at least part of the data to be transmitted in a message for random access in a period determined by the time information and transmitting the message to a base station.

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 buffering the data to be transmitted in response to the presence of the data to be transmitted comprises:

and caching the data packet to be sent.

4. The method of claim 3, wherein the reorganizing the data to be transmitted into data packets to be transmitted according to the time information in response to the presence of the data to be transmitted, comprises:

5. The method according to claim 3 or 4, wherein the data packet to be sent 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.

6. The method of claim 1, wherein the message for random access comprises: and the indication information is used for indicating whether the data to be transmitted except the data to be transmitted carried in the message for random access exists.

7. The method of claim 6, wherein if the indication information indicates that there is data to be transmitted other than data to be transmitted carried in the message for random access, the message for random access further comprises: and the data amount of the data to be transmitted, which is not carried in the message for random access.

8. A data transmission method, wherein the method is applied to a base station, comprising:

receiving position information of a terminal;

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

the method further comprises the steps of: in response to the existence of data to be issued, caching the data to be issued; transmitting the data to be issued in a period indicated by the time information;

The method further comprises the steps of: receiving data to be transmitted, which are reported by the terminal, in a period indicated by the time information; the receiving, in the period indicated by the time information, the data to be sent reported by the terminal includes: and receiving a message for random access sent by a terminal in a period determined by the time information, wherein the message for random access carries at least part of data to be sent by the terminal.

9. The method of claim 8, wherein the caching the data to be delivered in response to the data to be delivered being present comprises:

and caching the data packet to be issued.

10. The method of claim 9, wherein the reorganizing the data to be delivered into the data packet to be delivered according to the time information in response to the data to be delivered being present, comprises:

11. The method according to claim 9 or 10, wherein the data packet to be issued comprises: 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.

12. The method of claim 9, wherein the message for random access comprises: indication 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 steps of:

13. A data transmission apparatus, wherein the apparatus is applied to a terminal, comprising:

The first determining module is configured to determine time information of data transmission, wherein the time information is used for indicating the time of the terminal for communication through a service satellite;

the apparatus further comprises: the first caching module is configured to respond to the existence of data to be sent and cache the data to be sent; a first transmitting module configured to transmit the data to be transmitted in a period indicated by the time information;

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

14. The apparatus of claim 13, wherein the first determination module comprises:

15. The apparatus of claim 13, wherein the first cache module comprises:

16. The apparatus of claim 15, wherein the first reorganization submodule includes:

17. The apparatus of claim 15 or 16, wherein the data packet to be sent 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.

18. The apparatus of claim 13, wherein the message for random access comprises: and the indication information is used for indicating whether the data to be transmitted except the data to be transmitted carried in the message for random access exists.

19. The apparatus of claim 18, wherein if the indication information indicates that there is data to be transmitted other than data to be transmitted carried in the message for random access, the message for random access further comprises: and the data amount of the data to be transmitted, which is not carried in the message for random access.

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

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

the apparatus further comprises: the second caching module is configured to respond to the existence of the data to be issued and cache the data to be issued; the second sending module is configured to send the data to be sent in a period indicated by the time information;

the apparatus further comprises: the second receiving module is configured to receive data to be sent, which is reported by the terminal, in a period indicated by the time information; wherein the second receiving module includes: and the second receiving submodule is configured to receive a message for random access sent by the terminal in a period determined by the time information, wherein the message for random access carries at least part of data to be sent of the terminal.

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

22. The apparatus of claim 20, wherein the third recombinant submodule comprises:

23. The apparatus of claim 21 or 22, wherein the data packet to be delivered comprises: 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.

24. The apparatus of claim 20, wherein the message for random access comprises: indication information for indicating whether data to be transmitted other than the data to be transmitted carried in the message for random access exists; the apparatus further comprises:

25. A communication device, wherein the communication device comprises at least: a processor and a memory for storing executable instructions capable of executing on the processor, wherein:

the processor is configured to execute the executable instructions, when the executable instructions are executed, to perform the steps of the data transmission method provided in any one of the preceding claims 1 to 7 or 8 to 12.

26. A non-transitory computer readable storage medium having stored therein computer executable instructions which when executed by a processor implement the steps in the data transmission method provided in any one of the preceding claims 1 to 7 or 8 to 12.