WO2021051673A1 - 数据传输方法、装置、计算机设备和存储介质 - Google Patents

数据传输方法、装置、计算机设备和存储介质 Download PDF

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Publication number
WO2021051673A1
WO2021051673A1 PCT/CN2019/124687 CN2019124687W WO2021051673A1 WO 2021051673 A1 WO2021051673 A1 WO 2021051673A1 CN 2019124687 W CN2019124687 W CN 2019124687W WO 2021051673 A1 WO2021051673 A1 WO 2021051673A1
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Prior art keywords
message
transmitted
sdap
terminal
messages
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PCT/CN2019/124687
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English (en)
French (fr)
Inventor
胡呈欣
郑自永
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京信通信系统（中国）有限公司
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Publication of WO2021051673A1 publication Critical patent/WO2021051673A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/26—Special purpose or proprietary protocols or architectures

Definitions

  • This application relates to the field of mobile communication technology, and in particular to a data transmission method, device, computer equipment, and storage medium.
  • the Service Data Adaptation Protocol is a new-generation communication protocol, and one end is connected to the Packet Data Convergence Protocol (PDCP). , The other end is connected to the GPRS Tunneling Protocol (GTP), and its two ends respectively carry the data transmission on the wireless side and the wired side for receiving and sending.
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • GTP GPRS Tunneling Protocol
  • the SDAP module in 5G is used to implement forwarding user data, mapping between Quality of Service (QoS) flows and radio bearers, and implementing QoS flow ID (QFI) in uplink and downlink data packets.
  • QoS Quality of Service
  • QFI QoS flow ID
  • an embodiment of the present application provides a data transmission method, the method including:
  • the terminal obtains the current number of messages to be transmitted
  • the terminal When the current number of messages to be transmitted is at least two, the terminal generates a SDAP message from the current message to be transmitted according to the SDAP protocol; the SDAP message includes the reserved bit identifier, the content of each message to be transmitted, and each message to be transmitted Length of the message; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the terminal sends the SDAP message to the base station, and the SDAP message is used to instruct the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • an embodiment of the present application provides a data transmission method, which includes:
  • the base station receives the SDAP message sent by the terminal;
  • the SDAP message is a SDAP message generated by the terminal from the current message to be transmitted according to the SDAP protocol;
  • the SDAP message includes the reserved bit identifier, the content of each message to be transmitted, and each message to be transmitted The length of the message; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the base station analyzes the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • an embodiment of the present application provides a data transmission device, which includes:
  • the quantity acquisition module is used for the terminal to acquire the quantity of the current messages to be transmitted;
  • the generation module is used to generate a SDAP message from the current message to be transmitted according to the SDAP protocol when the current number of messages to be transmitted is at least two; the SDAP message includes the reserved bit identifier and the content of each message to be transmitted And the length of each message to be transmitted; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the sending module is used for the terminal to send the SDAP message to the base station, and the SDAP message is used for instructing the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • an embodiment of the present application provides a data transmission device, which includes:
  • the receiving module is used for the base station to receive the SDAP message sent by the terminal;
  • the SDAP message is a SDAP message generated by the terminal from the current message to be transmitted according to the SDAP protocol;
  • the SDAP message includes the reserved bit identifier and each message to be transmitted The content and the length of each message to be transmitted;
  • the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the parsing module is used for the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • an embodiment of the present application provides a computer device, including a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, any one of the methods provided in the embodiments of the first aspect and the second aspect is implemented. step.
  • an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the steps of any one of the methods provided in the above-mentioned first aspect and second aspect are implemented .
  • the terminal when the terminal detects that the current number of messages to be transmitted is at least two, the at least two messages to be transmitted are generated according to the SDAP protocol A message and send the message to the base station.
  • the terminal When the terminal generates a message, it encapsulates the content and length of at least two messages to be transmitted into one message, which greatly reduces the downstream of the SDAP protocol.
  • the header overhead required when the protocol processes data thereby improving the efficiency of data transmission.
  • FIG. 1 is an application environment diagram of a data transmission method provided by an embodiment
  • FIG. 2 is a schematic flowchart of a data transmission method provided by an embodiment
  • Figure 2a shows the original SDAP protocol uplink header and SDAP PDU format provided by an embodiment
  • Figure 2b shows the extended SDAP protocol uplink header and SDAP PDU format of this application provided by an embodiment
  • FIG. 3 is a schematic flowchart of a data transmission method provided by an embodiment
  • FIG. 4 is a schematic flowchart of a data transmission method provided by an embodiment
  • Figure 4a is a complete schematic diagram of a terminal-side data transmission method provided by an embodiment
  • FIG. 5 is a schematic flowchart of a data transmission method provided by an embodiment
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment
  • Figure 6a is a complete schematic diagram of a base station-side data transmission method provided by an embodiment
  • FIG. 7 is a structural block diagram of a data transmission device provided by an embodiment
  • FIG. 8 is a structural block diagram of a data transmission device according to an embodiment
  • FIG. 9 is a structural block diagram of a data transmission device provided by an embodiment.
  • FIG. 10 is a structural block diagram of a data transmission device according to an embodiment
  • FIG. 11 is a structural block diagram of a data transmission device according to an embodiment
  • Fig. 12 is a diagram of the internal structure of a computer device in an embodiment.
  • the data transmission method provided in this application can be applied to the application environment shown in FIG. 1, in which a terminal is connected to a base station, and the terminal performs data interaction with the base station.
  • the terminal can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
  • the base station may be a 5G base station. The terminal and the base station are used to execute the data transmission method provided in this application during the data exchange process.
  • the embodiments of the present application provide a data transmission method, device, computer equipment, and storage medium.
  • the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below through the embodiments and the accompanying drawings.
  • the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
  • the executive body of FIGS. 2 to 4 is a terminal
  • the executive body of FIGS. 5 to 6 is a base station.
  • the executive body of FIGS. 2 to 6 may also be A data transmission device, where the device can be implemented as part or all of a terminal or a base station through software, hardware, or a combination of software and hardware.
  • FIG. 2 provides a data transmission method.
  • This embodiment relates to the terminal according to the service data adaptation protocol layer (Service Data Adaptation Protocol) when the current number of messages to be transmitted is at least two. , SDAP) protocol, the specific process of generating one SDAP message from at least two messages to be transmitted, and sending the SDAP message to the base station, as shown in FIG. 2, the method includes:
  • S101 The terminal obtains the current number of messages to be transmitted.
  • the current message to be transmitted indicates the message that the terminal needs to transmit at the current moment.
  • the message to be transmitted can be stored in the buffer area of the terminal.
  • the terminal needs to obtain the number of messages to be transmitted currently At this time, the number of all messages to be transmitted can be directly extracted from the buffer area.
  • the terminal can also store the specific number of all messages to be transmitted at the current moment, and update the number in real time, so that the terminal can directly obtain the number when acquiring the number of messages to be transmitted.
  • the terminal When the current number of messages to be transmitted is at least two, the terminal generates a SDAP message from the current message to be transmitted according to the SDAP protocol; the SDAP message includes a reserved bit identifier, the content of each message to be transmitted, and each message to be transmitted. The length of the message to be transmitted; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted.
  • the terminal Based on the number of messages to be transmitted obtained in step S101, when the current number of messages to be transmitted is at least two, the terminal generates one SDAP message from the at least two messages to be transmitted according to the SDAP protocol. It is understandable that when the terminal obtains the current number of messages to be transmitted above, it can also acquire all the messages to be transmitted. Then, when the terminal detects that the number of messages to be transmitted currently is at least two, the at least two More than one message to be transmitted generates a message. When the terminal generates a message, it generates a SDAP message from at least two messages to be transmitted according to the SDAP protocol.
  • the generated one SDAP message It includes a reserved bit identifier, the content of each message to be transmitted in the at least two messages to be transmitted, and the length of each message to be transmitted.
  • the reserved bit identifier is used to distinguish whether the SDAP message is at least two messages to be transmitted.
  • the reserved bit identifier For the correspondence between the reserved bit identifier and the number of messages to be transmitted, an embodiment is provided.
  • the reserved bit identifier is the first value;
  • the reserved bit is identified as the second value;
  • the first value and the second value are different values.
  • the first value and the second value respectively indicate that the current number of messages to be transmitted is equal to 1 or greater than 1, where more than 1 means at least two cases mentioned in the above embodiment; among them, for the current messages to be transmitted If the number is less than 1, that is, the current number of packets to be transmitted is 0. In this case, no processing is performed.
  • the SDAP protocol is a newly added protocol in 5G.
  • the header field in the uplink service has a 1-bit reservation, which can be extended and upgraded to support new functions.
  • the format of the SDAP protocol uplink header and SDAP protocol data unit (Protocol Data Unit, PDU) is shown in Figure 2a, and the meaning of each field in the figure is shown in Table 1 below:
  • the embodiment of this step encapsulates the multiple packets to be transmitted in the uplink and their length indications into one packet by connecting them one after the other.
  • the following SDAP protocol uplink header and SDAP data PDU format are shown in Figure 2b, and the length of each message is increased on the basis of Figure 2a.
  • the terminal sends the SDAP message to the base station, where the SDAP message is used to instruct the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • the terminal sends a SDAP message generated in step S102 to the base station.
  • the base station can identify the reserved bits in the message and each to be transmitted.
  • the message length analyzes the content of the corresponding message to be transmitted to complete the transmission.
  • the existing 5G communication protocol has removed the RLC (Radio Link Control Protocol) support for data concatenation and cascading.
  • RLC Radio Link Control Protocol
  • the data transmission method is based on the traditional SDAP uplink processing, and uses the reserved fields in the SDAP protocol header to connect the data packets in series and cascade again, which causes the data transmission efficiency to be too low.
  • the terminal detects that the current number of messages to be transmitted is at least two, it generates a message from the at least two messages to be transmitted according to the SDAP protocol, and combines the one The message is sent to the base station.
  • the terminal When the terminal generates a message, it encapsulates the content and length of at least two messages to be transmitted into one message, which greatly reduces the headers required by the downstream protocol of the SDAP protocol to process data. This increases the efficiency of data transmission.
  • the embodiments of the present application also provide a data transmission method, which involves a specific process in which the terminal generates one SDAP message from at least two currently to be transmitted messages, as shown in Figure 3.
  • the above step S102 includes:
  • S201 The terminal compares the current number of packets to be transmitted with a preset threshold.
  • the terminal has determined that the current number of messages to be transmitted is greater than 1, that is, at least two.
  • the maximum number of messages is controlled by a threshold. Therefore, in this step, the terminal needs to compare the relationship between the current number of packets to be transmitted and a preset threshold, where the preset threshold is a preset threshold, that is, the preset threshold specifies that the terminal is performing generation
  • the maximum number of packets to be transmitted allowed in a SDAP packet.
  • the specific value of the preset threshold is not limited in this embodiment, and may be determined according to actual conditions, for example, 5 or 10 may be used.
  • S202 If the current number of packets to be transmitted is greater than or equal to a preset threshold, the terminal stacks and encapsulates the number of packets to be transmitted corresponding to the preset threshold and the length of each packet to be transmitted according to the SDAP protocol to obtain SDAP packets.
  • the terminal After the terminal compares the relationship between the current number of messages to be transmitted and the preset threshold, if the current number of messages to be transmitted is greater than or equal to the preset threshold, the terminal will set the number of pending messages corresponding to the preset threshold.
  • the content of the transmission message and the lengths to be transmitted are stacked and encapsulated to obtain an SDAP message, where the terminal stacking and encapsulation is the number of messages to be transmitted corresponding to the preset threshold and the length of each message.
  • S203 If the current number of packets to be transmitted is less than the preset threshold, the terminal stacks and encapsulates all the packets to be transmitted and the length of each packet to be transmitted according to the SDAP protocol to obtain SDAP packets.
  • the terminal After the terminal compares the relationship between the current number of messages to be transmitted and the preset threshold, and the comparison result is that the current number of messages to be transmitted is less than the preset threshold, the terminal will compare all the messages to be transmitted with the Each length to be transmitted is stacked and encapsulated to obtain an SDAP message. That is, when the current number of packets to be transmitted is less than the preset threshold, there is no need to filter the number, and the content of all the packets to be transmitted and the length of each packet are directly stacked and encapsulated in a packet in a way of connecting them one after the other.
  • the data transmission method provided in this embodiment divides the situation in which the terminal generates one message from at least two messages to be transmitted into two scenarios by setting a preset threshold. One is that the current number of messages to be transmitted is too large. If the preset threshold is exceeded, one is that the current number of packets to be transmitted does not exceed the preset threshold; for two different scenarios, the terminal selects different numbers of packets to be transmitted for stacking encapsulation, so that each SDAP packet generated The message is generated by an appropriate number of messages to be transmitted to avoid the situation that the number of messages to be transmitted is too large and the generated message is too large, thus ensuring the effectiveness of the method of generating one message from at least two messages to be transmitted by the terminal achieve.
  • the number of messages to be transmitted is 1 How does the terminal perform data transmission, and the specific process of the terminal distinguishing the two cases according to the current number of messages to be transmitted.
  • This application provides a data transmission method.
  • the terminal obtains the current number of messages to be transmitted. Then, before generating one SDAP message from at least two messages to be transmitted, as shown in Figure 4, the method includes:
  • S301 The terminal obtains the relationship between the number of currently to-be-transmitted messages and the magnitude of 1.
  • the terminal compares the current number of messages to be transmitted with the magnitude relationship between 1.
  • the first is the current message to be transmitted. If the number of packets is greater than 1, it means that there are at least two packets currently to be transmitted; the second type is that the number of packets currently to be transmitted is equal to 1; the third type is that the number of packets currently to be transmitted is less than 1, that is, there are currently no packets to be transmitted. For the transmitted message, this situation is not processed, and the process can be ended directly.
  • S302 If the size relationship is that the number of currently to-be-transmitted packets is greater than 1, the terminal executes the step of generating an SDAP packet from the currently-to-be-transmitted packets.
  • the size relationship is that the current number of packets to be transmitted is greater than 1, and the terminal directly executes the step of generating one SDAP packet from at least two packets to be transmitted according to the method described in the above embodiment, here No longer.
  • the size relationship is that the current number of packets to be transmitted is equal to 1. In this case, it means that there is only one packet to be transmitted, and the terminal directly determines the packet as the final SDAP packet to be transmitted. , No need for stacking and packaging operations.
  • the terminal determines whether the number is greater than 1 or equal to 1, and then performs different operations according to different situations, as long as the final transmission is reported
  • the message is just one message. In this way, the situation can be distinguished, and the targeted operation can be performed, which greatly saves the processing resources of the terminal.
  • the data interaction between the terminal and the base station can be specific to the internal protocol module.
  • the terminal includes a first SDAP module and a first PDCP module
  • the base station includes a second SDAP module.
  • the second PDCP module then an achievable way for the terminal to send the SDAP message to the base station includes: the first SDAP module sends the SDAP message to the first PDCP module, and the first PDCP module sends the SDAP message to the second The PDCP module, the second PDCP module sends the SDAP message to the second SDAP module.
  • the first SDAP module encapsulates the current message to be transmitted to generate an SDAP message, and sends the one S DAP message to the first packet data convergence protocol (Packet Data Convergence Protocol, PDCP) module, so that the first The PDCP module sends the SDAP message to the second PDCP module, and the second PDCP module sends the S DAP message to the second SDAP module.
  • PDCP Packet Data Convergence Protocol
  • the description here is just taking the terminal and the base station respectively including the SDAP module and the PDCP module as an example.
  • RLC and MAC Media Access Control Address, media access Modules such as the control layer
  • this application provides an embodiment to fully describe the data transmission method of this application.
  • This embodiment uses the terminal-side SDAP module as the transmitting end, as shown in Figure 4a, including the following specific steps:
  • the SDAP module of the terminal detects the messages to be sent at the current moment and their quantity, and executes S12;
  • the data transmission method provided in this embodiment integrates the data message cascade and SDAP protocol, and encapsulates the message to be transmitted and its length in a concatenated manner to generate a message, which saves downstream protocols (such as PDCP). /RLC/MAC) header overhead, thereby improving data transmission efficiency.
  • downstream protocols such as PDCP. /RLC/MAC
  • Figure 5 provides a data transmission method. This embodiment relates to a specific process in which a base station receives an SDAP message sent by a terminal and parses the message. As shown in Figure 5, this Methods include:
  • the base station receives the SDAP message sent by the terminal; the SDAP message is a SDAP message generated by the terminal from the current message to be transmitted according to the SDAP protocol; the SDAP message includes a reserved bit identifier, the content of each message to be transmitted, and each The length of the message to be transmitted; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted.
  • the SDAP message sent by the terminal received by the base station is a message
  • the SDAP message is a message generated by the terminal according to the SDAP protocol to generate a message to be transmitted.
  • the current message to be transmitted represents the message that the terminal needs to transmit at the current moment.
  • the terminal when the terminal generates an SDAP message from the message to be transmitted, there are two situations. One is the message of the message to be transmitted.
  • the terminal When the number is greater than 1, that is, when the current number of packets to be transmitted is at least two, the terminal stacks and encapsulates the at least two packets to be transmitted into one SDAP packet; the other is that the number of packets currently to be transmitted is equal to At 1:00, the terminal can directly generate an SDAP message for the message to be transmitted.
  • the terminal For the process of how the terminal generates a message in two situations, please refer to the embodiment on the terminal side, and this embodiment will not be repeated here.
  • the reserved bit identifier in a SDAP message is used to distinguish whether the SDAP message is generated by multiple messages to be transmitted. For example, if the reserved bit identifier is 0, it means that the SDAP message is generated. There is only one message to be transmitted in the text, which is not stacked and encapsulated. If the reserved bit flag is 1, it means that the one SDAP message is formed by stacking and encapsulating at least two messages to be transmitted.
  • the base station analyzes the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • the base station Based on the message received in step S401, the base station analyzes the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • the base station receives the SDAP message sent by the terminal. Since the SDAP message is a SDAP message generated by the terminal according to the SDAP protocol from the current message to be transmitted, in this way, regardless of the current message to be transmitted by the terminal There is only one message that is finally transmitted to the base station, which greatly reduces the header overhead required when the downstream protocol of the SDAP protocol processes data, thereby improving the efficiency of data transmission.
  • step S402 includes:
  • S501 The base station judges whether the SDAP message is generated by at least two messages to be transmitted according to the reserved bit identifier.
  • the base station can obtain the reserved bit identifier, and determine whether the SDAP message is generated by at least two messages to be transmitted based on the identifier.
  • the base station determines whether the SDAP message is at least two messages to be transmitted according to the reserved bit identifier.
  • the specific process of generating includes: if the reserved bit identifier is the second value, the SDAP message is at least two The message to be transmitted is generated; if the reserved bit identifier is the first value, the SDAP message is not generated by at least two messages to be transmitted.
  • the reserved bit identifier when the current number of messages to be transmitted is equal to 1, the reserved bit identifier is 0; when the current number of messages to be transmitted is greater than 1, the reserved bit identifier is 1, and the base station detects that the reserved bit identifier is 0, then It can be determined that the SDAP message is not generated by at least two messages to be transmitted, and if it is detected that the reserved bit identifier is 1, it can be determined that the SDAP message is generated by at least two messages to be transmitted.
  • the base station analyzes the content of the corresponding message to be transmitted according to the length of each message to be transmitted.
  • step S501 Based on the judgment result in step S501, if the SDAP message is generated by at least two messages to be transmitted, the base station analyzes the content of the corresponding message to be transmitted according to the length of each message to be transmitted, that is, one message length corresponds to one message. In this way, the content of the message can be parsed in turn.
  • the base station determines the content of the SDAP message as the content of the message to be transmitted.
  • step S501 Based on the judgment result in step S501, if the SDAP message is not generated by at least two messages to be transmitted, the base station directly determines the content of the currently received SDAP message as the message content to be transmitted.
  • the base station first determines, according to different reserved bit identifiers, that the SDAP message is generated by several messages to be transmitted. If it is generated by at least two messages, it needs to be generated according to the corresponding message. The length of the message is analyzed in turn to find out the content of the message to be transmitted. If there is only one message, the content of the SDAP message can be directly determined as the content of the message to be transmitted. In this way, different situations are dealt with in different ways. Improve the efficiency of data transmission.
  • the data interaction between the terminal and the base station can be specific to the internal protocol module.
  • the above-mentioned terminal includes a first SDAP module and a first PDCP module
  • the above-mentioned base station includes a second SDAP module and a second SDAP module.
  • Two PDCP modules; the specific process of the base station receiving the SDAP message sent by the terminal in step S401 includes: the second SDAP module receives the SDAP message sent by the second PDCP module; the SDAP message is sent by the first SDAP module through the first PDCP module Message for the second PDCP module.
  • the second SDAP module receives the SDAP message sent by the second PDCP module, where the SDAP message is sent by the first SDAP module to the second PDCP module through the first PDCP module.
  • the terminal and base station The SDAP module and the PDCP module are respectively included as examples. In actual applications, other protocol layer modules can be included for data transmission.
  • this application provides an embodiment to fully describe the base station side data transmission method of this application.
  • This embodiment uses the SDAP module in the base station as the receiving end, as shown in Figure 6a, including the following specific steps:
  • S25 Send the message (or sub-message) to the lower GTP module.
  • the message received by the base station is a fusion of data message concatenation and SDAP protocol
  • a message is generated by encapsulating the message to be transmitted and the length of the message together before and after the connection.
  • the overhead of the downstream protocol such as PDCP/RLC/MAC
  • a data transmission device which includes: a quantity obtaining module 10, a generating module 11, and a sending module 12, wherein,
  • the quantity obtaining module 10 is used for the terminal to obtain the quantity of the current messages to be transmitted;
  • the generating module 11 is used to generate a SDAP message from the current message to be transmitted according to the SDAP protocol when the current number of messages to be transmitted is at least two; the SDAP message includes a reserved bit identifier and each message to be transmitted The content of the message and the length of each message to be transmitted; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the sending module 12 is used for the terminal to send the SDAP message to the base station, and the SDAP message is used for instructing the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • a data transmission device is provided, and the above-mentioned generating module 11 includes: a comparing unit 111, a first packaging unit 112, and a second packaging unit 113, wherein,
  • the comparing unit 111 is used for the terminal to compare the current number of messages to be transmitted with a preset threshold
  • the first encapsulation unit 112 is configured to, if the current number of packets to be transmitted is greater than or equal to a preset threshold, the terminal stacks and encapsulates the number of packets to be transmitted corresponding to the preset threshold and the length of each packet to be transmitted according to the SDAP protocol , Get SDAP message;
  • the second encapsulation unit 113 is configured to, if the current number of packets to be transmitted is less than the preset threshold, the terminal stacks and encapsulates all the packets to be transmitted and the length of each packet to be transmitted according to the SDAP protocol to obtain SDAP packets.
  • a data transmission device is provided, and the device further includes: a relationship acquisition module 13 and a determination module 14, wherein,
  • the relationship acquisition module 13 is used for the terminal to acquire the relationship between the current number of messages to be transmitted and the magnitude of 1;
  • the generating module 11 is configured to, if the size relationship is that the number of currently to-be-transmitted packets is greater than 1, the terminal executes the step of generating one SDAP packet from at least two to-be-transmitted packets;
  • the determining module 14 is configured to determine that the current message to be transmitted is an SDAP message if the size relationship is that the number of the current message to be transmitted is equal to one.
  • the reserved bits are identified as the first value; when the current number of to-be-transmitted messages is greater than 1, the reserved bits are identified as the second value; the first value A different value from the second value.
  • the sending module 12 is specifically configured to send the SDAP message to the first PDCP module through the first SDAP module, the first PDCP module sends the SDAP message to the second PDCP module, and the second PDCP module sends the SDAP message to the The text is sent to the second SDAP module.
  • a data transmission device which includes: a receiving module 15 and an analysis module 16, wherein,
  • the receiving module 15 is used for the base station to receive the SDAP message sent by the terminal; the SDAP message is a SDAP message generated by the terminal according to the SDAP protocol from the current message to be transmitted; the SDAP message includes a reserved bit identifier and each message to be transmitted The content of the message and the length of each message to be transmitted; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the parsing module 16 is used for the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • the above-mentioned analysis module 16 includes: a judgment unit 161, an analysis unit 162, and a determination unit 163, wherein:
  • the judging unit 161 is used for the base station to judge whether the SDAP message is generated by at least two messages to be transmitted according to the reserved bit identifier;
  • the parsing unit 162 is configured to, if the SDAP message is generated by at least two messages to be transmitted, the base station analyzes the content of the corresponding message to be transmitted according to the length of each message to be transmitted;
  • the determining unit 163 is configured to, if the SDAP message is not generated by at least two messages to be transmitted, the second SDAP module determines the content of the SDAP message as the content of the message to be transmitted.
  • the determining unit 161 is specifically configured to determine that if the reserved bit identifier is the second value, the base station determines that the SDAP message is generated by at least two messages to be transmitted; if the reserved bit identifier is the first Value, the base station determines that the SDAP message is not generated by at least two messages to be transmitted.
  • the receiving module 15 is specifically configured to receive the SDAP message sent by the second PDCP module through the second SDAP module; the SDAP message is a message sent by the first SDAP module to the second PDCP module through the first PDCP module .
  • Each module in the above-mentioned data transmission device can be implemented in whole or in part by software, hardware and a combination thereof.
  • the above-mentioned modules may be embedded in the form of hardware or independent of the processor in the computer equipment, or may be stored in the memory of the computer equipment in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.
  • a computer device is provided.
  • the computer device may be a terminal, and its internal structure diagram may be as shown in FIG. 12.
  • the computer equipment includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus.
  • the processor of the computer device is used to provide calculation and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium.
  • the network interface of the computer device is used to communicate with an external terminal through a network connection.
  • the computer program is executed by the processor to realize a data transmission method.
  • the display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen
  • the input device of the computer equipment can be a touch layer covered on the display screen, or it can be a button, a trackball or a touchpad set on the housing of the computer equipment , It can also be an external keyboard, touchpad, or mouse.
  • FIG. 12 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied.
  • the specific computer device may Including more or fewer parts than shown in the figure, or combining some parts, or having a different arrangement of parts.
  • a computer device including a memory and a processor, and a computer program is stored in the memory, and the processor implements the following steps when the processor executes the computer program:
  • the terminal obtains the current number of messages to be transmitted
  • the terminal When the current number of messages to be transmitted is at least two, the terminal generates a SDAP message from the current message to be transmitted according to the SDAP protocol; the SDAP message includes the reserved bit identifier, the content of each message to be transmitted, and each message to be transmitted The length of the message; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the terminal sends the SDAP message to the base station, and the SDAP message is used to instruct the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • the base station receives the SDAP message sent by the terminal;
  • the SDAP message is a SDAP message generated by the terminal from the current message to be transmitted according to the SDAP protocol;
  • the SDAP message includes the reserved bit identifier, the content of each message to be transmitted, and each message to be transmitted The length of the message; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the base station analyzes the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:
  • the terminal obtains the current number of messages to be transmitted
  • the terminal When the current number of messages to be transmitted is at least two, the terminal generates a SDAP message from the current message to be transmitted according to the SDAP protocol; the SDAP message includes the reserved bit identifier, the content of each message to be transmitted, and each message to be transmitted The length of the message; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the terminal sends the SDAP message to the base station, and the SDAP message is used to instruct the base station to analyze the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.
  • the base station receives the SDAP message sent by the terminal;
  • the SDAP message is a SDAP message generated by the terminal from the current message to be transmitted according to the SDAP protocol;
  • the SDAP message includes the reserved bit identifier, the content of each message to be transmitted, and each message to be transmitted The length of the message; the reserved bit identifier is used to distinguish whether the SDAP message is generated by at least two messages to be transmitted;
  • the base station analyzes the content of the corresponding message to be transmitted according to the reserved bit identifier and the length of each message to be transmitted.

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Abstract

本申请涉及一种数据传输方法、装置、计算机设备和存储介质，在终端检测到当前待传输报文数量至少为两条时，根据SDAP协议将该至少两条的待传输报文生成一条报文，并将该一条报文发送至基站，其中，终端生成一条报文时，是将至少两条待传输报文内容及其长度封装到一条报文中，极大地削减SDAP协议的下游协议处理数据时所需的头部开销，从而提升了数据传输的效率。

Description

数据传输方法、装置、计算机设备和存储介质 技术领域
本申请涉及移动通信技术领域，特别是涉及一种数据传输方法、装置、计算机设备和存储介质。
背景技术
在第五代移动通信系统(5G)技术领域中，服务数据自适应协议(Service Data Adaptation Protocol，SDAP)属于一种新生代通信协议，其一端对接分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)、另一端对接GPRS隧道协议(GPRS Tunneling Protocol，GTP)，其两端分别承载了数据传输的无线侧、有线侧的收发处理。
5G中的SDAP模块用于实现转发用户数据、服务质量(Quality of Service，QoS)流与无线承载之间的映射、上下行数据包中实现QoS流标识(QoS flow ID，QFI)等。在上行数据传输过程中，经常会产生大量小报文，例如FTP业务下载中，会产生大量的上行应答小报文等，在对上行大量小报文进行处理时，在各层协议中均需要对数据包进行处理，造成各层协议头部开销占据比重较大，导致上行大量小报文的场景下，存在数据传输效率比较低下的问题。
发明内容
基于此，有必要针对上述上行大量小报文的场景下，存在数据传输效率比较低下的技术问题，提供一种数据传输方法、装置、计算机设备和存储介质。
第一方面，本申请实施例提供一种数据传输方法，该方法包括：
终端获取当前待传输报文数量；
在当前待传输报文数量为至少两条时，终端根据SDAP协议，将当前待传输报文生成一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
终端将SDAP报文发送至基站，SDAP报文用于指示基站根据预留位标识和各待传输 报文长度解析对应的待传输报文内容。
第二方面，本申请实施例提供一种数据传输方法，该方法包括：
基站接收终端发送的SDAP报文；SDAP报文为终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
基站根据预留位标识和各待传输报文长度，解析对应的待传输报文内容。
第三方面，本申请实施例提供一种数据传输装置，该装置包括：
数量获取模块，用于终端获取当前待传输报文的数量；
生成模块，用于在当前待传输报文数量为至少两条时，终端根据SDAP协议，将当前待传输报文生成一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
发送模块，用于终端将SDAP报文发送至基站，SDAP报文用于指示基站根据预留位标识和各待传输报文长度解析对应的待传输报文内容。
第四方面，本申请实施例提供一种数据传输装置，该装置包括：
接收模块，用于基站接收终端发送的SDAP报文；SDAP报文为终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
解析模块，用于基站根据预留位标识和各待传输报文长度，解析对应的待传输报文内容。
第五方面，本申请实施例提供一种计算机设备，包括存储器和处理器，存储器存储有计算机程序，处理器执行计算机程序时实现上述第一方面和第二方面实施例提供的任一项方法的步骤。
第六方面，本申请实施例提供一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述第一方面和第二方面实施例提供的任一项方法的步骤。
本申请实施例提供的一种数据传输方法、装置、计算机设备和存储介质，在终端检测到当前待传输报文数量至少为两条时，根据SDAP协议将该至少两条的待传输报文生成一条报文，并将该一条报文发送至基站，其中，终端生成一条报文时，是将至少 两条待传输报文内容及其长度封装到一条报文中，极大地削减SDAP协议的下游协议处理数据时所需的头部开销，从而提升了数据传输的效率。
附图说明
图1为一个实施例提供的一种数据传输方法的应用环境图；
图2为一个实施例提供的一种数据传输方法的流程示意图；
图2a为一个实施例提供的原始SDAP协议上行头部与SDAP PDU格式；
图2b为一个实施例提供的本申请扩展SDAP协议上行头部与SDAP PDU格式；
图3为一个实施例提供的一种数据传输方法的流程示意图；
图4为一个实施例提供的一种数据传输方法的流程示意图；
图4a为一个实施例提供的终端侧数据传输方法的完整示意图；
图5为一个实施例提供的一种数据传输方法的流程示意图；
图6为一个实施例提供的一种数据传输方法的流程示意图；
图6a为一个实施例提供的基站侧数据传输方法的完整示意图；
图7为一个实施例提供的一种数据传输装置的结构框图；
图8为一个实施例提供的一种数据传输装置的结构框图；
图9为一个实施例提供的一种数据传输装置的结构框图；
图10为一个实施例提供的一种数据传输装置的结构框图；
图11为一个实施例提供的一种数据传输装置的结构框图；
图12为一个实施例中计算机设备的内部结构图。
具体实施方式
本申请提供的一种数据传输方法，可以应用于如图1所示的应用环境中，其中，终端与基站连接，该终端与基站进行数据交互。其中，该终端可以但不限于是各种个人计算机、笔记本电脑、智能手机、平板电脑和便携式可穿戴设备。其中该基站可以是5G基站。该终端和基站在数据交互过程中用于执行本申请提供的数据传输方法。
本申请实施例提供一种数据传输方法、装置、计算机设备和存储介质，下面将通过实施例并结合附图具体地对本申请的技术方案以及本申请的技术方案如何解决上述技术问题进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的 概念或过程可能在某些实施例中不再赘述。需要说明的是，本申请提供的一种数据传输方法，图2-图4的执行主体为终端，图5-图6的执行主体为基站，其中，图2-图6的执行主体还可以是数据传输装置，其中该装置可以通过软件、硬件或者软硬件结合的方式实现成为终端或者基站的部分或者全部。
下面先对执行主体为终端的实施例进行说明。
在一个实施例中，图2提供了一种数据传输方法，本实施例涉及的是终端根据在当前待传输报文数量为至少两条时，终端根据服务数据自适应协议层(Service Data Adaptation Protocol，SDAP)协议，将至少两条待传输报文生成一条SDAP报文，并将该SDAP报文发送至基站的具体过程，如图2所示，所述方法包括：
S101，终端获取当前待传输报文的数量。
本实施例中，当前待传输报文表示的是终端当前时刻需要传输的报文，示例地，该待传输报文可以被存储在终端的缓存区中，当终端需要获取当前待传输报文数量时，可以直接从缓存区中提取所有待传输报文的数量。其中，终端还可以存储当前时刻所有待传输报文的具体数量，并实时更新该数量，这样，终端在获取待传输报文数量可以直接获取该数量。
S102，在当前待传输报文的数量为至少两条时，终端根据SDAP协议，将当前待传输报文生成一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的。
基于上述S101步骤中获取的待传输报文数量，终端在当前待传输报文数量为至少两条时，根据SDAP协议将该至少两条待传输报文生成一条SDAP报文。可以理解的是，终端在上述获取当前待传输报文数量时，可以将所有待传输报文也一起获取，则当终端检测到当前待传输报文数量至少为两条以上时，将该至少两条以上的待传输报文生成一条报文，其中，终端在生成报文时，是根据SDAP协议将至少两条以上的待传输报文生成一条SDAP报文，其中，生成的该一条SDAP报文中包括预留位标识、该至少两条待传输报文中各待传输报文的内容以及各待传输报文的长度，其中，预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的一种标识，不同的预留位标识表示不同的情况，例如，当预留位标识为0时，表示该一条SDAP报文是由一条待传输报文生成的，当预留位标识为1时，表示该一条SDAP报文是由至少两条以上待传输报文生成的。对于该预留位标识和待传输报文数量之间的对应关系，提供一个实施例，则可 选地，若当前待传输报文数量等于1时，预留位标识为第一值；当前待传输报文数量大于1时，预留位标识为第二值；第一值与第二值为不同的值。其中，第一值和第二值分别表示当前待传输报文数量等于1或者大于1，其中大于1即为上述实施例中所提及的至少两条的情况；其中，对于当前待传输报文数量小于1的情况，即为当前待传输报文数量为0的情况，这样情况不做处理。
其中，对于SDAP协议为5G中新增加的一种协议，在该SDAP协议中，其上行业务中的头部字段具有1bit预留，可供扩展升级，支持新功能。其中SDAP协议上行头部与SDAP协议数据单元(Protocol Data Unit，PDU)格式如图2a所示，其中该图中各字段表示的含义如下表1所示：
表1
Figure PCTCN2019124687-appb-000001
基于SDAP协议上行头部预留字段，在实际应用中，本步骤实施例将上行有待传输的多个报文及其长度指示，通过前后相接的方式，封装至一个报文之中,其扩展后的SDAP协议上行头部与SDAP数据PDU格式如图2b所示，在上述图2a基础上增加了各报文长度。
S103，终端将SDAP报文发送至基站，SDAP报文用于指示基站根据预留位标识和各待传输报文长度解析对应的待传输报文内容。
本步骤中，终端将上述S102步骤生成的一条SDAP报文发送至基站，其中，终端将该一条SDAP报文发送至基站后，基站可以根据该一条报文中的预留位标识和各待传输报文长度解析对应的待传输报文内容以完成传输。
现有5G通信协议，已移除RLC(无线链路控制协议)对数据串联、级联的支持，但在实际应用中，上行过程经常会出现大量小报文的场景，使得在各层协议头部开销占据比重较大，造成数据传输效率过于低下，本申请提供的数据传输方法在传统SDAP 上行处理的基础上，利用SDAP协议头部预留字段，将数据报文再度串联、级联，从而提升了5G业务上行传输效率。具体地，本实施例提供的数据传输方法，在终端检测到当前待传输报文数量至少为两条时，根据SDAP协议将该至少两条的待传输报文生成一条报文，并将该一条报文发送至基站，其中，终端生成一条报文时，是将至少两条待传输报文内容及其长度封装到一条报文中，极大地削减SDAP协议的下游协议处理数据时所需的头部开销，从而提升了数据传输的效率。
在以上实施例的基础上，本申请实施例还提供了一种数据传输方法，其涉及的是终端将当前至少两条待传输报文生成一条SDAP报文的具体过程，如图3所示，上述S102步骤包括：
S201，终端比较当前待传输报文的数量与预设阈值。
本实施例为终端已经确定了当前待传输报文数量大于1，即至少为两条的情况，但在实际应用中，通常对于报文最多的数量，也会设有门限值进行控制。因此，本步骤中，终端需要比较当前待传输报文数量与预设阈值之间的关系，其中，该预设阈值即为预先设定的门限值，即预设阈值是规定终端在执行生成一条SDAP报文时所允许的待传输报文最多的数量。该预设阈值的具体取值本实施例不做限定，可根据实际情况而定，例如5条、10条均可。
S202，若当前待传输报文的数量大于或等于预设阈值，终端根据SDAP协议，将预设阈值对应数量的待传输报文和各待传输报文的长度进行堆叠封装，得到SDAP报文。
基于上述S201中，终端比较了当前待传输报文数量与预设阈值之间的关系后，若当前待传输报文数量大于或等于预设阈值，则终端将与该预设阈值对应数量的待传输报文的内容，及其各待传输的长度进行堆叠封装，得到一条SDAP报文，其中，终端进行堆叠封装即为将该预设阈值对应数量的待传输报文及其各报文长度，通过前后相接的方式，前后堆叠、封装到一个报文中，这样，就可以平滑地实现将数据报文再度串联、级联。
S203，若当前待传输报文数量小于预设阈值，终端根据SDAP协议，将所有待传输报文和各待传输报文的长度进行堆叠封装，得到SDAP报文。
本步骤为终端比较当前待传输报文数量与预设阈值之间的关系后，比较结果为当前待传输报文数量小于预设阈值的情况，则终端根据SDAP协议，将所有待传输报文和各待传输的长度进行堆叠封装，得到SDAP报文。即当前待传输报文数量不足预设阈值 时，无需筛选数量，直接将所有待传输报文的内容及各报文长度通过前后相接的方式，堆叠封装在一个报文中。
本实施例提供的数据传输方法，通过设定预设阈值把终端将至少两条待传输报文生成一条报文的情况分为两种场景，一种是当前待传输报文数量过多，已经超过了预设阈值，一种是当前待传输报文数量没有超过预设阈值；针对两种不同的场景，终端选取不同的数量的待传输报文进行堆叠封装，这样，生成的每一条SDAP报文是由适当数量的待传输报文生成，避免待传输报文数量过多，生成的一条报文过大的情况，从而保证了终端将至少两条待传输报文生成一条报文方法的有效实现。
在实际场景中，除了上述实施例介绍的终端针对至少两条待传输报文生成一条报文的情况，还存在待传输报文数量为1条的情况，因此，在待传输报文数量为1条时，终端是如何进行数据传输，以及终端根据当前待传输报文数量区分这两种情况的具体过程，本申请提供了数据传输方法，该实施例是在终端获取了当前待传输报文数量后，将至少两条待传输报文生成一条SDAP报文之前进行的，则如图4所示，该方法包括：
S301，终端获取当前待传输报文的数量与1的大小关系。
本实施例中，终端在S101步骤中获取了当前待传输报文数量后，比对当前待传输报文数量与1的大小关系，该大小关系存在三种情况：第一种为当前待传输报文数量大于1，即为上述当前待传输报文为至少两条的情况；第二种为当前待传输报文数量等于1；第三种为当前待传输报文数量小于1，即当前没有要传输的报文，该种情况不做处理，直接结束流程即可。
S302，若大小关系为当前待传输报文的数量大于1，则终端执行将当前待传输报文生成一条SDAP报文的步骤。
本步骤中为大小关系为当前待传输报文数量大于1的情况，终端直接根据上述实施例中所描述的方式执行将至少两条待传输报文生成一条SDAP报文的步骤即可，在此不再赘述。
S303，若大小关系为当前待传输报文的数量等于1，则终端将当前待传输报文确定为SDAP报文。
本步骤中为大小关系为当前待传输报文数量等于1的情况，这种情况下，表示只存在一条报文需要传输，则终端直接将该报文确定为最终要传输的SDAP报文即可，无需进行堆叠封装操作。
本实施例提供的数据传输方法，终端在获取了当前待传输报文数量后，根据该数量判断为大于1还是等于1的情况，然后根据不同的情况执行不同的操作，只要最终传输时的报文都是一条报文即可，这样，对情况进行区分，针对性的进行操作，大大节省了终端的处理资源。
另外，本申请提供的数据传输方法，终端和基站之间数据的交互可以具体到内部协议模块，在一些场景中，上述终端包括第一SDAP模块和第一PDCP模块，上述基站包括第二SDAP模块和第二PDCP模块；则终端将SDAP报文发送至基站的一种可实现方式包括：第一SDAP模块将SDAP报文发送至第一PDCP模块，第一PDCP模块将SDAP报文发送至第二PDCP模块，第二PDCP模块将SDAP报文发送至第二SDAP模块。
具体地，第一SDAP模块将当前待传输报文封装生成一条SDAP报文，并将该一条S DAP报文发送至第一分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)模块，以使第一PDCP模块将SDAP报文发送至第二PDCP模块，以及第二PDCP模块将S DAP报文发送至第二SDAP模块。需要说明的是，这里只是以终端和基站分别包括SDAP模块和PDCP模块为例进行的说明，在实际应用中，除了SDAP模块和PDCP模块以外，还存在RLC和MAC(Media Access Control Address，媒体访问控制层)等模块，则在报文数据传输过程中，还需要经由RLC和MAC等模块来传输，本实施例在此不作一一列举。
基于上述所有实施例，本申请提供一个实施例，对本申请的数据传输方法进行完整说明，该实施例以终端侧SDAP模块为发送端，如图4a所示，包括具体步骤如下：
S11，终端的SDAP模块检测当前时刻待上发报文及其数量，执行S12；
S12，判断报文数量是否大于0，若是执行S13，否则执行S19；
S13，判断报文数量是否大于1，若是执行S14，否则执行S15；
S14，判断报文数量是否小于预设阈值N，若是执行S16，否则执行S17；
S15，将当前1条报文封装SDAP头，预留位标识为0，执行S18；
S16，将全部报文及其长度堆叠后封装SDAP头，预留位标识为1，执行S18；
S17，将N个报文及其长度堆叠后封装SDAP头，预留位标识为1，执行S18；
S18，将封装后的一条报文发往PDCP模块，执行S12；
S19，处理完毕。
本实施例提供的数据传输方法，融合数据报文级联与SDAP协议，将待传输报文及 其长度，以前后相接的方式封装在一起，生成一条报文，节省了下游协议(例如PDCP/RLC/MAC)头部开销，从而提高了数据传输效率。
下面对执行主体为基站的实施例进行说明，需要说明的是，由于基站与终端是交互完成本申请的数据传输方法的，因此对于基站侧实施例中部分内容在终端侧一致的，将不再赘述，可参见终端侧的说明。
在一个实施例中，图5提供了一种数据传输方法，本实施例涉及的是基站接收终端发送的一条SDAP报文，并对该报文进行解析的具体过程，如图5所示，该方法包括：
S401，基站接收终端发送的SDAP报文；SDAP报文为终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的。
本实施例中，基站接收终端发送的SDAP报文是一条报文，该一条SDAP报文是终端根据SDAP协议，将当前待传输报文生成的报文。其中，当前待传输报文表示的是终端当前时刻需要传输的报文，其中，终端将当前待传输报文生成的一条SDAP报文时，包括两种情况，一种是当前待传输报文的数量大于1时，即当前待传输报文数量为至少两条时，终端将该至少两条待传输报文进行堆叠封装到一条SDAP报文中；另外一种是当前待传输报文的数量等于1时，终端直接将该一条待传输报文生成SDAP报文即可。对于终端就具体是如何分两种情况生成一条报文的过程，可参见终端侧的实施例，本实施例在此不再赘述。
另外，对于一条SDAP报文中的预留位标识，是用于区分该一条SDAP报文是否为多条待传输报文生成的，例如，若预留位标识为0，则表示该一条SDAP报文中只有一个待传输报文，不是堆叠封装的，若预留位标识为1，则表示该一条SDAP报文为由至少两条的待传输报文堆叠封装而成的。
S402，基站根据预留位标识和各待传输报文长度，解析对应的待传输报文内容。
基于上述S401步骤中接收的报文，基站根据预留位标识和各待传输报文长度，解析对应的待传输报文内容。
本实施例提供的数据传输方法，基站接收终端发送的SDAP报文，由于该SDAP报文是终端根据SDAP协议将当前待传输报文生成的一条SDAP报文，这样，无论终端当前待传输的报文有多少，最终传给基站的只有一条报文，极大地削减SDAP协议的下游协议处理数据时所需的头部开销，从而提升了数据传输的效率。
其中，基站解析对应的待传输报文内容的具体过程，可参见图6所示的实施例，则上述S402步骤包括：
S501，基站根据预留位标识判断SDAP报文是否为至少两条待传输报文生成的。
本实施例中，由于预留位标识是不同情况下取不同的值，因此，基站可获取预留位标识，根据该标识判断SDAP报文是否为至少两条待传输报文生成的。
对于终端待传输报文的数量和预留位标识之间的关系，提供一个实施例，则可选地，当前待传输报文数量等于1时，预留位标识为第一值；当前待传输报文数量大于1时，预留位标识为第二值；第一值与第二值为不同的值。在该实施例基础上，基站根据预留位标识判断SDAP报文是否为至少两条待传输报文生成的具体过程包括：若预留位标识为第二值时，SDAP报文是至少两条待传输报文生成的；若预留位标识为第一值时，SDAP报文不是至少两条待传输报文生成的。
例如，当前待传输报文数量等于1时，预留位标识为0；当前待传输报文数量大于1时，预留位标识为1，则基站在检测到预留位标识为0时，则可以确定SDAP报文不是至少两条待传输报文生成的，若检测到预留位标识为1时，则可以确定SDAP报文是至少两条待传输报文生成的。
S502，若SDAP报文是至少两条待传输报文生成的，基站根据各待传输报文长度解析对应的待传输报文内容。
基于上述S501步骤中的判断结果，若SDAP报文是至少两条待传输报文生成的，则基站根据各待传输报文长度解析对应的待传输报文内容，即一个报文长度对应一个报文，这样依次解析出报文内容。
S503，若SDAP报文不是至少两条待传输报文生成的，基站将SDAP报文的内容确定为待传输报文内容。
基于上述S501步骤中的判断结果，若SDAP报文不是至少两条待传输报文生成的，则基站直接将当前接收到的SDAP报文的内容确定为待传输报文内容。
本实施例提供的数据传输方法，基站根据不同的预留位标识，先确定出SDAP报文是由几条待传输报文生成，若是由至少两条报文生成的，则需要根据对应的报文长度依次解析出待传输报文的内容，若是只有一条报文，则可直接将SDAP报文内容确定为待传输报文的内容，这样，对于不同情况，针对性的采取不同方式处理，大大提高了数据传输效率。
同终端侧实施例一样，终端和基站之间数据的交互可以具体到内部协议模块，则在一些场景中，上述终端包括第一SDAP模块和第一PDCP模块，上述基站包括第二SDAP模块和第二PDCP模块；则S401步骤中基站接收终端发送的SDAP报文的具体过程包括：第二SDAP模块接收第二PDCP模块发送的SDAP报文；SDAP报文为第一SDAP模块通过第一PDCP模块发送给第二PDCP模的报文。
本实施例中，第二SDAP模块接收第二PDCP模块发送的SDAP报文，其中SDAP报文为第一SDAP模块通过第一PDCP模块发送给第二PDCP模的，同样，这里只是以终端和基站分别包括SDAP模块和PDCP模块为例进行的说明，在实际应用中可包括其他协议层模块进行数据传输。
基于上述基站侧所有实施例，本申请提供一个实施例，对本申请的基站侧数据传输方法进行完整说明，该实施例以基站中SDAP模块为接收端，如图6a所示，包括具体步骤如下：
S21，接收来自PDCP的报文，然后执行S22；
S22，剔除报文的SDAP头，然后执行S23；
S23，检测“预留位标识”是否为1，若是转S24，否则执行S25；
S24，将堆叠的子报文，根据长度逐一解封，然后执行S25；
S25，将该报文(或子报文)发往下层GTP模块。
本实施例提供的数据传输方法，由于基站接收到的报文是融合数据报文级联与SDAP协议，将待传输报文及其长度，以前后相接的方式封装在一起生成的一条报文，在解析过程中节省了下游协议(例如PDCP/RLC/MAC)头部开销，从而提高了数据传输效率。
应该理解的是，虽然图2-6的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，图2-6中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些子步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
在一个实施例中，如图7所示，提供了一种数据传输装置，该装置包括：数量获 取模块10、生成模块11和发送模块12，其中，
数量获取模块10，用于终端获取当前待传输报文的数量；
生成模块11，用于在当前待传输报文的数量为至少两条时，终端根据SDAP协议，将当前待传输报文生成一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
发送模块12，用于终端将SDAP报文发送至基站，SDAP报文用于指示基站根据预留位标识和各待传输报文长度解析对应的待传输报文内容。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，如图8所示，提供了一种数据传输装置，上述生成模块11包括：比较单元111、第一封装单元112和第二封装单元113，其中，
比较单元111，用于终端比较当前待传输报文的数量与预设阈值；
第一封装单元112，用于若当前待传输报文的数量大于或等于预设阈值，终端根据SDAP协议，将预设阈值对应数量的待传输报文和各待传输报文的长度进行堆叠封装，得到SDAP报文；
第二封装单元113，用于若当前待传输报文数量小于预设阈值，终端根据SDAP协议，将所有待传输报文和各待传输报文的长度进行堆叠封装，得到SDAP报文。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，如图9所示，提供了一种数据传输装置，该装置还包括：关系获取模块13和确定模块14，其中，
关系获取模块13，用于终端获取当前待传输报文的数量与1的大小关系；
生成模块11，用于若大小关系为当前待传输报文的数量大于1，则终端执行将至少两条待传输报文生成一条SDAP报文的步骤；
确定模块14，用于若大小关系为当前待传输报文的数量等于1，则终端将当前待传输报文确定为SDAP报文。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，上述当前待传输报文的数量等于1时，预留位标识为第一值；当前待传输报文的数量大于1时，预留位标识为第二值；第一值与第二值为不同的值。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，发送模块12具体用于通过第一SDAP模块将SDAP报文发送至第一PDCP模块，第一PDCP模块将SDAP报文发送至第二PDCP模块，第二PDCP模块将SDAP报文发送至第二SDAP模块。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，如图10所示，提供了一种数据传输装置，该装置包括：接收模块15和解析模块16，其中，
接收模块15，用于基站接收终端发送的SDAP报文；SDAP报文为终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
解析模块16，用于基站根据预留位标识和各待传输报文长度，解析对应的待传输报文内容。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，如图11所示，上述解析模块16包括：判断单元161、解析单元162和确定单元163，其中，
判断单元161，用于基站根据预留位标识判断SDAP报文是否为至少两条待传输报文生成的；
解析单元162，用于若SDAP报文是至少两条待传输报文生成的，基站根据各待传输报文长度解析对应的待传输报文内容；
确定单元163，用于若SDAP报文不是至少两条待传输报文生成的，第二SDAP模块将SDAP报文的内容确定为待传输报文内容。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，上述当前待传输报文的数量等于1时，预留位标识为第一值；当前待传输报文的数量大于1时，预留位标识为第二值；第一值与第二值为不同的值；则判断单元161具体用于若预留位标识为第二值，基站确定SDAP报文是至少两条待传输报文生成的；若预留位标识为第一值，基站确定SDAP报文不是至少两条待传输报文生成的。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，接收模块15具体用于通过第二SDAP模块接收第二PDCP模块发送的SDAP报文；SDAP报文为第一SDAP模块通过第一PDCP模块发送给第二PDCP模的报文。
上述实施例提供的一种数据传输装置，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
关于数据传输装置的具体限定可以参见上文中对于数据传输方法的限定，在此不再赘述。上述数据传输装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
在一个实施例中，提供了一种计算机设备，该计算机设备可以是终端，其内部结构图可以如图12所示。该计算机设备包括通过系统总线连接的处理器、存储器、网络接口、显示屏和输入装置。其中，该计算机设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统和计算机程序。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该计算机设备的网络接口用于与外部的终端通过网络连接通信。该计算机程序被处理器执行时以实现一种数据传输方法。该计算机设备的显示屏可以是液晶显示屏或者电子墨水显示屏，该计算机设备的输入装置可以是显示屏上覆盖的触摸层，也可以是计算机设备外壳上设置的按键、轨迹球或触控板，还可以是外接的键盘、触控板或鼠标等。
本领域技术人员可以理解，图12中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算 机设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
在一个实施例中，提供了一种计算机设备，包括存储器和处理器，存储器中存储有计算机程序，该处理器执行计算机程序时实现以下步骤：
终端获取当前待传输报文的数量；
在当前待传输报文的数量为至少两条时，终端根据SDAP协议，将当前待传输报文生成一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
终端将SDAP报文发送至基站，SDAP报文用于指示基站根据预留位标识和各待传输报文长度解析对应的待传输报文内容。
或者，该处理器执行计算机程序时实现以下步骤：
基站接收终端发送的SDAP报文；SDAP报文为终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
基站根据预留位标识和各待传输报文长度，解析对应的待传输报文内容。
上述实施例提供的一种计算机设备，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现以下步骤：
终端获取当前待传输报文的数量；
在当前待传输报文的数量为至少两条时，终端根据SDAP协议，将当前待传输报文生成一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
终端将SDAP报文发送至基站，SDAP报文用于指示基站根据预留位标识和各待传输报文长度解析对应的待传输报文内容。
或者，该计算机程序被处理器执行时实现以下步骤：
基站接收终端发送的SDAP报文；SDAP报文为终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；预留位标识用于区分SDAP报文是否为至少两条待传输报文生成的；
基站根据预留位标识和各待传输报文长度，解析对应的待传输报文内容。
上述实施例提供的一种计算机可读存储介质，其实现原理和技术效果与上述方法实施例类似，在此不再赘述。

Claims (13)

  1. 一种数据传输方法，包括：
    终端获取当前待传输报文的数量；
    在所述当前待传输报文的数量为至少两条时，所述终端根据SDAP协议，将所述当前待传输报文生成一条SDAP报文；所述SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；所述预留位标识用于区分所述SDAP报文是否为至少两条待传输报文生成的；
    所述终端将所述SDAP报文发送至基站，所述SDAP报文用于指示所述基站根据所述预留位标识和各所述待传输报文长度解析对应的待传输报文内容。
  2. 根据权利要求1所述的方法，所述终端根据SDAP协议，将所述当前待传输报文生成一条SDAP报文，包括：
    所述终端比较所述当前待传输报文的数量与预设阈值；
    若所述当前待传输报文的数量大于或等于所述预设阈值，所述终端根据所述SDAP协议，将所述预设阈值对应数量的待传输报文和各待传输报文的长度进行堆叠封装，得到所述SDAP报文；
    若所述当前待传输报文的数量小于所述预设阈值，所述终端根据所述SDAP协议，将所有待传输报文和各待传输报文的长度进行堆叠封装，得到所述SDAP报文。
  3. 根据权利要求1或2所述的方法，在所述终端根据SDAP协议，将所述当前待传输报文生成一条SDAP报文之前，所述方法包括：
    所述终端获取所述当前待传输报文的数量与1的大小关系；
    若所述大小关系为所述当前待传输报文的数量大于1，则所述终端执行将所述当前待传输报文生成一条SDAP报文的步骤；
    若所述大小关系为所述当前待传输报文的数量等于1，则所述终端将所述当前待传输报文确定为所述SDAP报文。
  4. 根据权利要求1-3任一项所述的方法，所述当前待传输报文的数量等于1时，所述预留位标识为第一值；所述当前待传输报文的数量大于1时，所述预留位标识为第二值；所述第一值与所述第二值为不同的值。
  5. 根据权利要求1所述的方法，所述终端包括第一SDAP模块和第一PDCP模块，所述基站包括第二SDAP模块和第二PDCP模块；
    则所述终端将所述SDAP报文发送至基站包括：
    所述第一SDAP模块将所述SDAP报文发送至所述第一PDCP模块，所述第一PDCP模块将所述SDAP报文发送至所述第二PDCP模块，所述第二PDCP模块将所述SDAP报文发送至所述第二SDAP模块。
  6. 一种数据传输方法，包括：
    基站接收终端发送的SDAP报文；所述SDAP报文为所述终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；所述SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；所述预留位标识用于区分所述SDAP报文是否为至少两条待传输报文生成的；
    所述基站根据所述预留位标识和各所述待传输报文长度，解析对应的待传输报文内容。
  7. 根据权利要求6所述的方法，所述基站根据所述预留位标识和各所述待传输报文长度，解析对应的待传输报文内容，包括：
    所述基站根据所述预留位标识判断所述SDAP报文是否为至少两条待传输报文生成的；
    若所述SDAP报文是至少两条待传输报文生成的，所述基站根据各所述待传输报文长度解析对应的待传输报文内容；
    若所述SDAP报文不是至少两条待传输报文生成的，所述基站将所述SDAP报文的内容确定为所述待传输报文内容。
  8. 根据权利要求7所述的方法，所述基站根据所述预留位标识判断所述SDAP报文是否为至少两条待传输报文生成的，包括：
    若所述预留位标识为第二值，所述基站确定所述SDAP报文是至少两条待传输报文生成的；
    若所述预留位标识为第一值，所述基站确定所述SDAP报文不是至少两条待传输报文生成的；其中，第一值与第二值为不同的值。
  9. 根据权利要求6所述的方法，所述终端包括第一SDAP模块和第一PDCP模块，所述基站包括第二SDAP模块和第二PDCP模块；
    则所述基站接收终端发送的SDAP报文，包括：
    所述第二SDAP模块接收所述第二PDCP模块发送的所述SDAP报文；所述SDAP报 文为所述第一SDAP模块通过所述第一PDCP模块发送给所述第二PDCP模的报文。
  10. 一种数据传输装置，包括：
    数量获取模块，用于终端获取当前待传输报文的数量；
    生成模块，用于在所述当前待传输报文的数量为至少两条时，所述终端根据SDAP协议，将所述当前待传输报文生成一条SDAP报文；所述SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；所述预留位标识用于区分所述SDAP报文是否为至少两条待传输报文生成的；
    发送模块，用于所述终端将所述SDAP报文发送至基站，所述SDAP报文用于指示所述基站根据所述预留位标识和各所述待传输报文长度解析对应的待传输报文内容。
  11. 一种数据传输装置，包括：
    接收模块，用于基站接收终端发送的SDAP报文；所述SDAP报文为所述终端根据SDAP协议，将当前待传输报文生成的一条SDAP报文；所述SDAP报文包括预留位标识、各待传输报文内容和各待传输报文长度；所述预留位标识用于区分所述SDAP报文是否为至少两条待传输报文生成的；
    解析模块，用于所述基站根据所述预留位标识和各所述待传输报文长度，解析对应的待传输报文内容。
  12. 一种计算机设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器执行所述计算机程序时实现权利要求1至9中任一项所述方法的步骤。
  13. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至9中任一项所述的方法的步骤。
PCT/CN2019/124687 2019-09-17 2019-12-11 数据传输方法、装置、计算机设备和存储介质 WO2021051673A1 (zh)

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