WO2020098614A1 - 一种数据传输的方法和设备 - Google Patents

一种数据传输的方法和设备 Download PDF

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Publication number
WO2020098614A1
WO2020098614A1 PCT/CN2019/117273 CN2019117273W WO2020098614A1 WO 2020098614 A1 WO2020098614 A1 WO 2020098614A1 CN 2019117273 W CN2019117273 W CN 2019117273W WO 2020098614 A1 WO2020098614 A1 WO 2020098614A1
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Prior art keywords
nas message
session management
data transmission
management nas
data
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PCT/CN2019/117273
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English (en)
French (fr)
Inventor
郭雅莉
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电信科学技术研究院有限公司
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Publication of WO2020098614A1 publication Critical patent/WO2020098614A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers

Definitions

  • This application relates to the field of communication technology, and in particular, to a data transmission method and device.
  • the NextGen network architecture mainly includes UE (User, terminal), AMF (Access and Mobility Management Function, access and mobility management function) entity, AN (Access Network, access network), SMF (Session Management Function, Session management function) entity, UPF (User Plane Function, user plane anchor) function, DN (Data Network).
  • UE User, terminal
  • AMF Access and Mobility Management Function, access and mobility management function
  • AN Access Network, access network
  • SMF Session Management Function, Session management function
  • UPF User Plane Function, user plane anchor
  • DN Data Network
  • the AMF entity is responsible for mobility management and is connected to the UE and the AN, and the SMF is responsible for session management and the UPF. It is mainly responsible for managing the PDU (Protocol Data Unit) established between the UE and the network. Protocol Data Unit) session, when a PDU session is established, SMF selects UPF for this session. Support for IOT (Internet of Things) communication needs to be considered in the NextGen network.
  • IOT Internet of Things
  • the transmission of small data is to establish a PDU session for small data transmission after the UE is attached to the network.
  • This PDU session only establishes a control plane connection, and does not need to establish an N3 tunnel between AN and UPF. There is no need to establish a user plane radio bearer on the air interface between ANs.
  • user data is directly carried in the session management NAS (Non Access Stratum, non-access layer) message between the UE and the SMF.
  • the user data is exchanged between the SMF and the UPF through N4 signaling, and the UPF is responsible for operation User data interaction between the merchant network and the external data network DN.
  • NAS Non Access Stratum, non-access layer
  • the session management NAS message will be carried in the mobility management NAS message as a load report.
  • the UE will send the mobility management NAS message to the AMF entity.
  • the AMF entity will directly send the mobility management NAS message to the AMF entity.
  • the session management NAS message is sent to the SMF entity, where the SMF entity is determined according to the PDU session identifier in the mobility management NAS message; after the SMF entity receives the session management NAS message, the transmission data in the session management NAS message is parsed; in this process
  • the air interface is expensive.
  • the present application provides a method and equipment for data transmission, to solve the problem of large air interface overhead in data transmission in the prior art.
  • an embodiment of the present application provides a data transmission method.
  • the method includes:
  • the sending device generates a data transmission session management NAS message containing the transmission data, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header; the sending device sends the The data transmission session management NAS message and the PDU session identifier are sent to the receiving device.
  • the sending device generates a data transmission session management NAS message containing the transmission data.
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header, and manages the data transmission session.
  • the NAS message and the PDU session identifier are sent to the receiving device. Since the protocol header of the data transfer session management NAS message is shortened or there is no protocol header, the overhead of the session management NAS message protocol header is reduced, thereby reducing the air interface overhead when transmitting data .
  • the sending device when the sending device sends the data transmission session management NAS message and the PDU session identifier to the receiving device, the sending device sends the data transmission session management NAS message and the PDU session The identifier is sent to the AMF entity, and sent to the receiving device through the AMF entity.
  • the sending device sends the data transmission session management NAS message and the PDU session identifier to the receiving device through the AMF entity, so that the data transmission session management NAS message and the PDU session identifier can be smoothly sent to the receiving device.
  • the sending device before the sending device generates a data transmission session management NAS message containing the transmission data, after the sending device determines that the trigger condition is satisfied, it determines to use the data transmission session management NAS message to transmit the transmission data;
  • the sending device is a terminal
  • the trigger conditions include some or all of the following: the transmission data is small data, and the terminal needs to transmit data through a narrowband Internet of Things base station; or the sending device is a session management function SMF
  • the trigger condition includes some or all of the following: the transmission data is small data, and a terminal that performs data transmission with the SMF entity needs to transmit data through a narrowband Internet of Things base station.
  • the terminal after determining that the transmission data is satisfied as small data, and / or the terminal needs to transmit data through the narrowband IoT base station, it determines to use the data transmission session management NAS message to transmit the transmission data to ensure that small data transmission is in progress Can reduce the air interface overhead, and other data can be transmitted smoothly.
  • the sending device when the sending device generates a data transmission session management NAS message containing the transmission data, the sending device selects some cells in the protocol header of the session management NAS message, based on the selected cells and all The transmission data generates a session management NAS message including a shortened protocol header; or, the sending device directly generates a session management NAS message that does not include a protocol header according to the transmission data; or, the sending device selects a session management NAS message protocol header Some or all of the special cells in the message, generating the session management NAS message of the shortened protocol header according to the selected special cells and the transmission data; wherein the length of the special cell is less than the session management NAS message protocol header The length of a cell of the same type as the special cell in.
  • the above method provides multiple ways for the sending device to generate the data transmission session management NAS message, so that the generated protocol header of the transmission session management NAS message is shortened or does not exist, and the overhead of the session management NAS message protocol header is reduced, thereby reducing Air interface overhead during data transmission.
  • the session management NAS message that does not include a protocol header is the transmission data.
  • the session management NAS message that does not include the protocol header is the transmission data itself. At this time, only the data transmission is performed when the data is transmitted, which reduces the air interface overhead during data transmission.
  • the sending device when the sending device sends the data transmission session management NAS message and the PDU session identifier to the AMF entity, the sending device will be used to instruct the session management NAS message to be a data transmission session
  • the indication identifier of the management NAS message is sent to the AMF entity together with the data transmission session management NAS message and the PDU session identifier.
  • the sending device when the sending device sends information to the receiving device through the AMF entity, it also sends an indication identifier for instructing the session management NAS message to be the data transmission session management NAS message together with the data transmission session management NAS message and the PDU session identifier To the AMF entity, so that the AMF entity forwards all the received information to the receiving device, and then the receiving device can determine the session management NAS message as the data transmission session management NAS message according to the indication identifier after receiving the indication identifier, and then the receiving device can smoothly Reading the transmission data in the data transmission session management NAS message.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the PDU session identifier may be used to instruct the session management NAS message to be a data transmission session management NAS message.
  • the indication identifier may not be sent, reducing information transmission and reducing air interface overhead during data transmission.
  • the sending device when the sending device sends the data transmission session management NAS message and the PDU session identifier to an AMF entity, the sending device is a terminal, and the sending device transmits the data
  • the session management NAS message and the PDU session identifier are carried in the mobility management NAS message and sent to the AMF entity; or the sending device is an SMF entity, and the sending device transmits the data transfer session management NAS message and the The PDU session identifier is sent to the AMF entity through the calling service between the SMF entity and the AMF entity.
  • the above method provides that when the sending device is a terminal, that is, uplink data transmission, the data transmission session management NAS message and the PDU session identifier are carried in the mobility management NAS message and sent to the AMF entity; when the sending device is the SMF entity, that is, downlink data transmission , The data transmission session management NAS message and the PDU session identifier are sent to the AMF entity through the calling service between the SMF entity and the AMF entity, and a specific transmission scheme is given.
  • an embodiment of the present application provides a data transmission method.
  • the method includes:
  • the AMF entity receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, where the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • the AMF entity sends the received data transmission session management NAS message and the PDU session identifier to a receiving device.
  • the AMF entity forwards the received data transmission session management NAS message and PDU session identifier sent by the sending device to the receiving device, where the data transmission session management NAS message is a shortened protocol session management NAS message or does not include a protocol header
  • the session management NAS message in the case of data transmission management NAS message data transmission, shorten the protocol header of the session management NAS message or use the session management NAS message without the protocol header, reducing the overhead of the session management NAS message protocol header, Thereby reducing the air interface overhead during data transmission.
  • the AMF entity when the AMF entity receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, the AMF entity will be used to instruct the session management NAS message to be the data transmission session management NAS message
  • the indication identifier is sent to the receiving device together with the data transmission session management NAS message and the PDU session identifier.
  • the AMF entity sends the received indication identifier for instructing the session management NAS message to be a data transmission session management NAS message to the receiving device, so that the receiving device determines that the session management NAS message is data transmission according to the indication identifier
  • the session management NAS message further facilitates the receiving device to read the transmission data in the data transmission session management NAS message.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the PDU session identifier may be used to instruct the session management NAS message to be a data transmission session management NAS message.
  • the indication identifier may not be sent, reducing information transmission and reducing air interface overhead during data transmission.
  • the sending device when the AMF entity sends the received data transmission session management NAS message and the PDU session identifier to a receiving device, the sending device is a terminal, and the AMF entity will receive The data transmission session management NAS message and the PDU session identifier are sent to the receiving device through an invocation service between an SMF entity and an AMF entity; or the sending device is an SMF entity, and the AMF entity transmits the data
  • the session management NAS message and the PDU session identifier are carried in the mobility management NAS message and sent to the receiving device.
  • the above method provides that when the sending device is a terminal, that is, uplink data transmission, the AMF entity carries the data transmission session management NAS message and the PDU session identifier in the mobility management NAS message and forwards it to the receiving device; when the sending device is an SMF entity, it transmits downlink data. At that time, the AMF entity forwards the data transmission session management NAS message and the PDU session identifier to the receiving device through the calling service between the SMF entity and the AMF entity, and gives a specific transmission scheme.
  • an embodiment of the present application provides a data transmission method.
  • the method includes:
  • the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header; the receiving The end device reads the transmission data carried in the data transmission session management NAS message, and determines the PDU session corresponding to the transmission data according to the PDU session identifier.
  • the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, and reads the transmission data in the data transmission session management NAS message, and forwards the read transmission data to the PDU session identifier A determined PDU session, wherein the data transmission session management NAS message is a short protocol header session management NAS message or a session management NAS message not including a protocol header, so that the protocol header of the session management NAS message is reduced or does not exist, thereby reducing the session Manage the overhead of the NAS message protocol header to reduce the air interface overhead during data transmission.
  • the receiving device reads data, it reduces the amount of data read and accelerates the rate of reading and transmitting data.
  • the receiving device when the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, the receiving device receives the data transmission session management NAS message sent by the sending device through the AMF entity And PDU session ID.
  • the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity, so that the receiving device can successfully receive the data transmission session management NAS message and the PDU session identifier sent by the sending device.
  • the receiving device when the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity, the receiving device receives the sending from the sending device through the AMF entity Is used to indicate that the session management NAS message is an indication identifier of the data transmission session management NAS message; wherein, the indication identifier is received together with the data transmission session management NAS message and the PDU session identifier.
  • the receiving device when the receiving device receives the data, it also receives the indication flag sent by the sending device to indicate that the session management NAS message is the data transmission session management NAS message through the AMF entity. After receiving the indication flag, the receiving device can It is determined that the session management NAS message is a data transmission session management NAS message.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the PDU session identifier may be used to instruct the session management NAS message to be a data transmission session management NAS message.
  • the indication identifier may not be sent, reducing information transmission and reducing air interface overhead during data transmission.
  • the receiving device After the receiving device receives the data transmission session management NAS message sent by the sending device, and before reading the transmission data carried in the data transmission session management NAS message, the receiving device After the PDU session identifier determines that the session management NAS message is a data transmission session management NAS message, read the transmission data carried in the data transmission session management NAS message; or the receiving device determines the session management NAS message as data according to the indication identifier After transmitting the session management NAS message, read the transmission data carried in the data transmission session management NAS message.
  • the receiving device may determine the session management NAS message as the data transmission session management NAS message according to the received indication identifier or PDU session identifier, and read the data transmission session management NAS message carried in the data transmission session management NAS message Only after confirming the session management NAS message as the data transmission session management NAS message, can the data be accurately read.
  • the receiving device when the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity, the receiving device is a terminal, and the receiving device uses the AMF
  • the mobility management NAS message sent by the entity receives the data transmission session management NAS message and the PDU session identifier sent by the sending device; or the receiving device is an SMF entity, and the receiving device invokes a service between the SMF entity and the AMF entity Receiving the data transmission session management NAS message and the PDU session identifier sent by the AMF entity.
  • the above method provides that when the receiving device is a terminal, that is, downlink data transmission, it will receive the data transmission session management NAS message and PDU session identifier forwarded by the AMF entity. At this time, the data transmission session management NAS message and PDU session identifier are carried on the mobility management NAS In the message; when the receiving device is an SMF entity, that is, uplink data transmission, the data transmission session management NAS message and the PDU session identifier forwarded by the AMF entity will be received through the call service between the SMF entity and the AMF entity, and a specific transmission scheme is given.
  • an embodiment of the present application provides a device for data transmission.
  • the device includes: a processor, a memory, and a transceiver; wherein, the processor is used to read a program in the memory and execute it:
  • a data transmission session management NAS message including transmission data wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • an embodiment of the present application provides a data transmission device.
  • the device includes: a processor, a memory, and a transceiver; wherein, the processor is used to read a program in the memory and execute:
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • an embodiment of the present application provides a data transmission device.
  • the device includes: a processor, a memory, and a transceiver; wherein, the processor is used to read a program in the memory and execute:
  • the transmission session manages the transmission data carried in the NAS message, and determines the PDU session corresponding to the transmission data according to the PDU session identifier.
  • an embodiment of the present application provides a device for data transmission.
  • the device includes: a generation module, a first sending module, and a generation module for generating a data transmission session management NAS message including data transmission, wherein the data transmission
  • the session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header; the first sending module is used to send the data transmission session management NAS message and the PDU session identifier to the receiving device.
  • an embodiment of the present application provides a device for data transmission.
  • the device includes: a first receiving module, a second sending module, and a first receiving module for receiving a data transmission session management NAS message and PDU sent by the sending device Session identification, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header; a second sending module is used to receive the received data transmission session management NAS message And the PDU session identifier is sent to the receiving device.
  • an embodiment of the present application provides a data transmission device.
  • the device includes: a second receiving module, a reading module; a second receiving module, configured to receive a data transmission session management NAS message and a PDU session sent by the sending device ID, where the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header; a reading module is used to read the data carried in the data transmission session management NAS message Transmitting data, and determining the PDU session corresponding to the transmitted data according to the PDU session identifier.
  • a computer storable medium provided by an embodiment of the present application has stored thereon a computer program which, when executed by a processor, implements the steps of a method for data transmission by a sending device, or implements data transmission by an AMF entity The steps of the method, or the steps of the method for implementing data transmission by the receiving device.
  • Figure 1 is a schematic diagram of the NextGen network architecture in the prior art
  • FIG. 2A is a structural diagram of a data transmission system provided by an embodiment of the present application.
  • FIG. 2B is a structural diagram of another data transmission system provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of a method for uplink data transmission provided by an embodiment of the present application.
  • FIG. 5 is a structural diagram of a first data transmission device provided by an embodiment of the present application.
  • FIG. 6 is a structural diagram of a second data transmission device provided by an embodiment of the present application.
  • FIG. 7 is a structural diagram of a third data transmission device provided by an embodiment of the present application.
  • FIG. 8 is a structural diagram of a fourth data transmission device provided by an embodiment of the present application.
  • FIG. 9 is a structural diagram of a fifth data transmission device provided by an embodiment of the present application.
  • FIG. 10 is a structural diagram of a sixth data transmission device provided by an embodiment of the present application.
  • FIG. 11 is a flowchart of a first data transmission method provided by an embodiment of this application.
  • FIG. 13 is a flowchart of a third data transmission method provided by an embodiment of the present application.
  • the term “plurality” refers to two or more, and other quantifiers are similar.
  • the NextGen network needs to consider support for Internet of Things communication, especially for small data transmission.
  • a PDU session for small data transmission needs to be established.
  • the PDU session only establishes a control plane connection; when the terminal and the network side device perform small data transmission, the terminal will need to transmit
  • the small data is carried in the session management NAS message, and the session management NAS message is carried in the form of a load packet in the mobility management NAS message and sent to the AMF entity.
  • the mobility management NAS message also includes the PDU session ID.
  • the AMF entity determines the network-side device according to the PDU session identifier and sends the session management NAS message to the network-side device.
  • the network-side device After receiving the session management NAS message sent by the AMF entity, the network-side device parses the data carried in the session management NAS message, and sends the parsed data to the user plane functional entity.
  • the session management NAS message contains the session management NAS message protocol header, as shown in Table 1:
  • the protocol header of the session management NAS message carries the PDU session identifier, which is the same as the PDU session identifier in the mobility management NAS message.
  • the small data to be transmitted is nested with two layers of NAS message protocol headers, one layer is the session management NAS message protocol header, and the other is the mobility management NAS message protocol header.
  • Some or all of the cells in the two-layer NAS message protocol header are repeated, which makes the data transmission time and air interface cost greater, but the outermost layer of mobility management NAS message protocol header is necessary, so minimize the session management NAS Protocol header in the message to save air interface overhead.
  • This application provides a data transmission session management NAS message during data transmission, where the data transmission session management NAS message is a NAS message with a shortened protocol header, or a session management NAS message without a protocol header is used to carry small data that needs to be transmitted, Therefore, the overhead of the session management NAS message protocol header is reduced during data transmission, thereby reducing the air interface overhead when transmitting small data.
  • the terminal is a device with wireless communication function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as Airplanes, balloons and satellites etc.).
  • the terminal may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, industrial control
  • the network-side device is a device that provides a wireless communication function for the terminal, including but not limited to: gNB in 5G, a radio network controller (radio network controller, RNC), and node B (node B, NB) , Base station controller (BSC), base transceiver station (BTS), home base station (eg, home evolved node B, or home node B, HNB), baseband unit (BaseBand Unit, BBU), transmission Transmitting and receiving point (TRP), transmitting point (TP), mobile switching center, etc.
  • gNB radio network controller
  • RNC radio network controller
  • node B node B
  • BSC Base station controller
  • BTS base transceiver station
  • home base station eg, home evolved node B, or home node B, HNB
  • Baseband unit BaseBand Unit
  • TRP transmission Transmitting and receiving point
  • TP transmitting point
  • mobile switching center etc.
  • FIG. 2A it is a schematic structural diagram of a data transmission system provided by an embodiment of the present application, which specifically includes a sending device 20 and a receiving device 40.
  • the sending device 20 is configured to generate a data transmission session management NAS message including transmission data, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • the data transmission session management NAS message and the PDU session identifier are sent to the receiving device.
  • the receiving device 40 is configured to receive a data transmission session management NAS message and a PDU session identifier sent by the sending device, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management without a protocol header NAS message; read the transmission data carried in the data transmission session management NAS message, and determine the PDU session corresponding to the transmission data according to the PDU session identifier.
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management without a protocol header NAS message
  • the sending device generates a data transmission session management NAS message including transmission data, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header, And send the data transmission session management NAS message and the PDU session identifier to the receiving device, so that the receiving device receives the data transmission session management NAS message and the PDU session identifier, and reads the transmission carried in the data transmission session management NAS message Data, and determine the PDU session corresponding to the transmission data according to the PDU session identifier, and finally forward the transmission data through the PDU session; as the session management NAS message used for data transmission in this application is a shortened protocol header
  • the session management NAS message or the session management NAS message without the protocol header reduces the overhead of the session management NAS message protocol header, thereby reducing the air interface overhead of data transmission.
  • the sending device determines to use the data transmission session management NAS message to transmit the transmission data; and determines to use the data transmission session management NAS After the message, a data transmission session management NAS message containing the transmission data is generated.
  • the sending device is a terminal
  • the trigger condition includes some or all of the following:
  • the transmission data is small data
  • the terminal needs to transmit data through a narrowband Internet of Things base station.
  • the terminal when the terminal needs to perform data transmission, it is determined that the transmission data that needs to be transmitted is small data; at this time, the terminal determines to use the data transmission session management NAS message for data transmission, thereby generating data including the transmission data Transmitting a session management NAS message, and sending the data transmission session management NAS message containing the transmission data to the receiving device; or when the terminal needs to perform data transmission, determine that the transmission data to be transmitted is small data, and determine The type of terminal access to the network is narrowband Internet of Things; then the transmission data is small data, and the terminal needs to transmit data through the narrowband Internet of Things base station, determine to use the data transmission session management NAS message for data transmission, and then generate data containing the transmission data Transmitting a session management NAS message, and sending the data transmission session management NAS message containing the transmission data to the receiving device.
  • the sending device is a session management function SMF entity
  • the trigger condition includes some or all of the following:
  • the transmission data is small data
  • a terminal that performs data transmission with the SMF entity needs to transmit data through a narrowband Internet of Things base station.
  • the SMF entity when the SMF entity needs to perform data transmission, it is determined that the transmission data that needs to be transmitted is small data; at this time, the SMF entity determines to use the data transmission session management NAS message for data transmission, and then generates the transmission data The data transmission session management NAS message of the server, and send the data transmission session management NAS message containing the transmission data to the receiving device; or when the SMF entity needs to perform data transmission, determine that the transmission data to be transmitted is small data , And it is determined that the type of the terminal accessing the network for data transmission with the SMF entity is the narrowband Internet of Things; The data transmission session management NAS message performs data transmission, and further generates a data transmission session management NAS message including transmission data, and sends the data transmission session management NAS message including transmission data to the receiving device.
  • the data transmission session management NAS message containing the transmission data is generated in the following manner:
  • Method 1 Generate a message including the data transmission session management NAS according to some cells in the session management NAS message protocol header and the transmission data.
  • the sending device selects some cells in the protocol header of the session management NAS message, and generates a session management NAS message including a shortened protocol header according to the selected cells and the transmission data.
  • the information elements included in the protocol header of the session management NAS message include the protocol identifier, PDU session identifier, message association identifier, and session management message name identifier; when the sending device determines to generate the data transmission session management NAS message, from A part of the cells of the protocol header of the session management NAS message is selected as the protocol header in the data session of the session management NAS message, and a part is randomly selected during the selection process.
  • the sending device may also select the cells of the protocol header that are not repeated based on the comparison with the cells of the protocol header in the mobility management NAS message.
  • the PDU session ID in the mobility management NAS message belongs to redundant cells
  • the protocol ID and message association ID are selected, the data transmission session management NAS message is generated according to the selected cell and the transmission data; as shown in Table 2 Is the protocol header and transmission data included in the first data transmission session management NAS message in the embodiment of the present application;
  • Protocol identification required 1byte Message association identifier (cell) required 1byte Session management message name identification (cell) required 1byte transfer data required Abyte
  • the length of the transmitted data depends on the actual transmitted data length.
  • the generated data transmission session management NAS has fewer protocol header cells than the session management NAS message corresponding to Table 1, that is, the protocol header is shortened, so the generated data transmission session management NAS message is a session management NAS message with a shortened protocol header .
  • Manner 2 generating the data transmission session management NAS message according to the transmission data.
  • the sending device directly generates a session management NAS message that does not include a protocol header according to the transmission data.
  • the protocol header may not be included in the session management NAS message, and only the transmission data is included.
  • the session management NAS message that does not include a protocol header may be the transmission data itself, and the transmission data and the PDU session identifier are sent to the receiving device.
  • Manner 3 generating the data transmission session management NAS message according to the special information element in the session management NAS message protocol header.
  • the sending device selects some or all of the special cells in the protocol header of the session management NAS message, and generates the session management NAS message of the shortened protocol header according to the selected special cells and the transmission data; wherein, The length of the special cell is less than the length of the same type of cell in the session management NAS message protocol header as the special cell.
  • the information elements included in the protocol header of the session management NAS message are: protocol identifier with a length of 1 byte, PDU session identifier with a length of 1 byte, message association identifier with a length of 1 byte, and session management message with a length of 1 byte Name identification, so special cells may be: protocol identifier with a length of 1/2 byte, PDU session identifier with a length of 1/2 byte, message association identifier with a length of 1/2 byte, and session with a length of 1/2 byte Management message name identification; where the length is 1/2 byte as special information is only an example, the length can also be 1/4 byte, 1/8 byte, etc.
  • each cell length is 1/2 byte as a special cell for example, select all of the special cells, that is, select the protocol identifier with a length of 1/2 byte and the PDU with a length of 1/2 byte
  • the session identifier, the message association identifier with a length of 1/2 byte, and the name identifier of the session management message with a length of 1/2 byte, as shown in Table 3, are included in the second data transmission session management NAS message in the embodiment of the present application Protocol header and transmission data;
  • the length of the transmitted data depends on the actual transmitted data length.
  • the generated data transmission session management NAS message has a shorter protocol header cell length and a shorter protocol header than the corresponding session management NAS message in Table 1. Therefore, the generated data transmission session management NAS message shortens the protocol header. Session management NAS messages.
  • a session management NAS message including a shortened protocol header may also be generated based on the selected cell, the selected special cell, and the transmission data;
  • the selected cell and the selected special cell cannot be of the same type.
  • a message association identifier of any length cannot be selected.
  • Protocol identification required 1byte Message association identifier (cell) required 1/2 bytes Session management message name identification (cell) required 1/4 bytes transfer data required Abyte
  • the length of the transmitted data depends on the actual transmitted data length.
  • the generated data transmission session management NAS not only reduces the number of cells, but also shortens the length of some of the selected cells, so the generated data transmission session management NAS message NAS messages are managed to shorten the session of the protocol header.
  • the transmission data after determining that the transmission data is small data and / or the terminal is recorded in the network through the narrowband IoT base station, it determines to use the data transmission session management NAS message to transmit the transmission data, and according to the selected information Element and / or selected special cells, and the transmission data to generate the data transmission session management NAS message used when transmitting the transmission data, can accurately determine whether to use the data transmission session management NAS message, which can smoothly carry out data transmission At the same time, it can also reduce the air interface overhead generated during data transmission.
  • FIG. 2B it is a schematic structural diagram of a second data transmission system provided by an embodiment of the present application.
  • the data transmission system further includes an AMF entity 30;
  • the AMF entity 30 is configured to receive a data transmission session management NAS message and a PDU session identifier sent by a sending device, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management without a protocol header NAS message; send the received data transmission session management NAS message and PDU session identifier to the receiving device.
  • the sending device sends the data transmission session management NAS message and the PDU session identifier to the receiving device
  • the sending device sends the data transmission session management NAS message and the PDU session identifier to the AMF entity, through the The AMF entity is sent to the receiving device.
  • the AMF entity determines the corresponding receiving device according to the PDU session identifier, and sends the data transmission session management NAS message And the PDU session ID is sent to the receiving device.
  • the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity, that is, the receiving data transmission session management NAS message and the PDU session identifier sent by the AMF entity.
  • the data transmission session management NAS message and PDU session identifier sent by the AMF entity are received by the AMF entity from the sending device, so the AMF entity is mainly used to transfer data between the sending device and the receiving device transmission.
  • the AMF entity is used to forward the received data transmission session management NAS message and PDU session identifier sent by the sending device to the receiving device, so that the receiving device can successfully receive the data transmission session management NAS message and PDU session sent by the sending device The identification is forwarded to the receiving device.
  • the sending device In data transmission, there are uplink data transmission and downlink data transmission.
  • the sending device In the uplink data transmission, the sending device is a terminal and the receiving device is an SMF entity; in the downlink data transmission, the sending device is an SMF entity and the receiving device is a terminal ;
  • the specific data transmission process participates in the following embodiments.
  • Embodiment 1 uplink data transmission.
  • the terminal has attached to the network and established a PDU session for small data transmission.
  • the terminal and the SMF entity have synchronized the information that the PDU session is used for small data transmission during the establishment of the PDU session, and / or the information that synchronizes whether the terminal accesses the network through the narrowband IoT base station.
  • the terminal and the SMF entity Since the terminal and the SMF entity have synchronized the PDU session for small data transmission during the establishment of the PDU session, or have synchronized whether the terminal accesses the network through the narrowband IoT base station, and then determines whether the terminal passes the narrowband object
  • the networked base station transmits data, so after receiving the PDU session identifier, the SMF entity can determine that the PDU session identifier is used for small data transmission, and then determine that the received session management NAS message is a data transmission session management NAS message .
  • the indication identifier can also be used to instruct the session management NAS message to be a data transmission session management NAS message.
  • the received session management NAS message can be determined to be a data transmission session management NAS message .
  • Case 1 The PDU session identifier is used to instruct the NAS message to manage the NAS message for the data transmission session.
  • the terminal After determining that the transmission data needs to be transmitted, the terminal determines whether the transmission data is small data, or determines whether it transmits data through the narrowband Internet of Things base station.
  • the terminal determines that the transmission data is small data, then determines to use a data transmission session management NAS message to transmit the transmission data; or the terminal determines that the transmission data is small data, and determines that it transmits data through the narrowband Internet of Things base station, then It is determined to use a data transmission session management NAS message to transmit the transmission data.
  • the terminal generates a data transmission session management NAS message including the transmission data, and carries the data transmission session management NAS message and the PDU session identifier in the mobility management NAS message and sends it to the AMF entity.
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header.
  • the AMF entity receives the data transmission session management NAS message and the PDU session identifier sent by the terminal, and determines the SMF entity according to the received PDU session identifier, and passes the data transmission session management NAS message and the PDU session identifier through The calling service between the SMF entity and the AMF entity is sent to the SMF entity.
  • the SMF entity receives the data transmission session management NAS message sent by the AMF entity and the PDU session identifier through the calling service between the SMF entity and the AMF entity.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the SMF entity After receiving the PDU session identifier, the SMF entity determines that the PDU session identifier is used for small data transmission according to the information synchronized by the terminal and the SMF entity, and then determines that the received session management NAS message is a data transmission session management NAS message , The SMF entity parses the received data transmission session management NAS message according to the data transmission session management NAS message specified in the transmission protocol, reads the transmission data in the data transmission session management NAS message, and according to the PDU The session identifier determines the PDU session corresponding to the transmission data.
  • the SMF entity After determining the transmission data, the SMF entity forwards the transmission data to the UPF entity determined according to the PDU session identifier, so as to enable the transmission data interaction between the UPF entity and an external data network.
  • Case 2 The indicator is used to instruct the NAS message to manage the NAS message for the data transmission session.
  • the terminal After the terminal generates the data transmission session management NAS message including the transmission data, the terminal carries the data transmission session management NAS message, the PDU session identifier, and an indication identifier for indicating that the NAS message is the data transmission session management NAS message.
  • the message is sent to the AMF entity.
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header.
  • the AMF entity receives the mobility management NAS message sent by the terminal and including the data transmission session management NAS message, the PDU session identifier, and an indication identifier for indicating that the NAS message is the data transmission session management NAS message; and
  • the SMF entity is determined according to the PDU session identifier, and the data transmission session management NAS message, the PDU session identifier, and the indication identifier for indicating the NAS message as the data transmission session management NAS message are invoked between the SMF entity and the AMF entity
  • the service is sent to the SMF entity determined according to the PDU session identifier.
  • the SMF entity receives the data transmission session management NAS message sent by the AMF entity, the PDU session identifier, and the indication identifier for indicating that the NAS message is the data transmission session management NAS message through the calling service between the SMF entity and the AMF entity
  • the SMF entity determines that the received session management NAS message is a data transmission session management NAS message according to the instruction identifier, and parses the received data transmission session management NAS message according to the data transmission session management NAS message specified in the transmission protocol , Read the transmission data in the data transmission session management NAS message, and determine the PDU session corresponding to the transmission data according to the PDU session identifier.
  • the SMF entity After determining the transmission data, the SMF entity forwards the transmission data to the UPF entity determined according to the PDU session identifier, so as to enable the transmission data interaction between the UPF entity and an external data network.
  • FIG. 3 it is a flowchart of a method for uplink data transmission provided by an embodiment of the present application, and specifically includes the following steps:
  • Step 300 After determining that the data transmission session management NAS message is adopted, the terminal generates a data transmission session management NAS message containing the transmission data.
  • Step 310 The terminal carries the data transmission session management NAS message including the transmission data as a load packet and a PDU session identifier in the mobility management NAS message, and sends the mobility management NAS message to the AMF entity.
  • the mobility management NAS message may further include an indication identifier for instructing the NAS message to manage the NAS message for the data transmission session.
  • step 320 the AMF entity determines the SMF entity according to the received PDU session identifier.
  • Step 330 The AMF entity sends the data transmission session management NAS message and the PDU session identifier to the SMF entity through an invocation service between the SMF entity and the AMF entity.
  • the AMF entity sends an indication identifier indicating that the NAS message is a data transmission session management NAS message to the SMF entity together with the data transmission session management NAS message and the PDU session identifier.
  • Step 340 The SMF entity determines the received session management NAS message as the data transmission session management NAS message according to the received PDU session identifier, and reads the transmission data in the data transmission session management NAS message, and at the same time according to the PDU session The identifier determines the PDU session corresponding to the transmission data.
  • the SMF entity determines that the received session management NAS message is a data transmission session management NAS message according to the indication identifier.
  • Step 350 the SMF entity forwards the transmission data to the UPF entity.
  • Embodiment 2 Downlink data transmission.
  • the terminal has been attached to the network and has established a PDU session for small data transmission.
  • the terminal and the SMF entity have synchronized the information that the PDU session is used for small data transmission, and / or the information about whether the terminal accesses the network through the narrowband IoT base station.
  • the receiving device in the second column may also determine the received session management NAS message as a data transmission session management NAS message according to the PDU session identifier, or determine the received session management NAS message as a data transmission session according to the indication identifier Manage NAS messages; each is described below.
  • Case 1 The PDU session identifier is used to instruct the NAS message to manage the NAS message for the data transmission session.
  • the SMF entity receives the transmission data sent by the UPF entity through the PDU session connection, where the transmission data is obtained by the UPF entity from an external network.
  • the SMF entity After receiving the transmission data, the SMF entity determines whether the PDU session corresponding to the PDU session connection used when receiving the transmission data is information for small data transmission, if it is determined that the PDU session corresponding to the PDU session connection used is for small data transmission Data transmission information, it is determined that the transmission data is small data, at this time it is determined that the data transmission session management NAS message is used to transmit the transmission data; or the SMF entity determines that the transmission data is small data, and determines and The SMF entity performs data transmission.
  • the terminal transmits data through the narrowband Internet of Things base station, and then determines to use a data transmission session management NAS message to transmit the transmission data.
  • the SMF entity generates a data transmission session management NAS message including the transmission data, and sends the data transmission session management NAS message and the PDU session identifier to the AMF entity through the calling service between the SMF entity and the AMF entity.
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header.
  • the AMF receives the data transmission session management NAS message and the PDU session identifier sent by the SMF entity through the calling service between the SMF entity and the AMF entity, and determines the terminal corresponding to the PDU session identifier according to the PDU session identifier.
  • the AMF entity carries the data transmission session management NAS message and the PDU session identifier in the form of load packets in the mobility management NAS message and sends it to the terminal determined according to the PDU session identifier;
  • the terminal receives the data transmission session management NAS message and the PDU session identifier in the mobility management NAS message sent by the AMF entity.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the terminal After receiving the PDU session identifier, the terminal determines that the PDU session identifier is used for small data transmission according to the information synchronized by the terminal and the SMF entity, and then determines that the received session management NAS message is a data transmission session management NAS message, The terminal parses the received data transmission session management NAS message according to the data transmission session management NAS message specified in the transmission protocol, reads the transmission data in the data transmission session management NAS message, and according to the PDU session identifier Determining a PDU session corresponding to the transmission data.
  • the terminal After determining the transmission data, the terminal forwards the transmission data to the terminal's session management layer for processing, where the terminal's session management layer is determined according to the PDU session identifier.
  • Case 2 The indicator is used to instruct the NAS message to manage the NAS message for the data transmission session.
  • the SMF entity After the SMF entity generates the data transmission session management NAS message including the transmission data, the data transmission session management NAS message, the PDU session identifier, and the indication identifier used to instruct the NAS message to be the data transmission session management NAS message through the SMF entity and the AMF
  • the call service between entities is sent to the AMF entity.
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header.
  • the AMF entity receives the message sent by the SMF entity that contains the data transmission session management NAS message, the PDU session identifier, and an indication identifier for indicating that the NAS message is a data transmission session management NAS message; and according to the The PDU session identifier determines the terminal corresponding to the PDU session identifier, and carries the data transmission session management NAS message, the PDU session identifier, and an indication identifier for indicating that the NAS message is the data transmission session management NAS message in the form of a load packet In the mobility management NAS message, the mobility management NAS message is sent to the terminal determined according to the PDU session identifier.
  • the terminal receives the data transmission session management NAS message, the PDU session identifier, and the indication identifier for indicating that the NAS message is the data transmission session management NAS message in the mobility management NAS message sent by the AMF entity; the terminal according to the indication identifier Determine that the received session management NAS message is a data transmission session management NAS message, analyze the received data transmission session management NAS message according to the data transmission session management NAS message specified in the transmission protocol, and read the data transmission session Manage the transmission data in the NAS message, and determine the PDU session corresponding to the transmission data according to the PDU session identifier.
  • the terminal After determining the transmission data, the terminal forwards the transmission data to the terminal's session management layer for processing, where the terminal's session management layer is determined according to the PDU session identifier.
  • FIG. 4 it is a flowchart of a method for downlink data transmission provided by an embodiment of the present application, which specifically includes the following steps:
  • step 400 the SMF entity receives the transmission data sent by the UPF entity through the PDU session connection.
  • the transmission data is obtained by the UPF entity from an external data network.
  • Step 410 After the SMF entity determines to use the data transmission session management NAS message, it generates a data transmission session management NAS message containing the transmission data.
  • step 420 the SMF entity sends the data transmission session management NAS message and the PDU session identifier to the AMF entity through the calling service between the SMF entity and the AMF entity.
  • an indication identifier for indicating that the NAS message is a data transmission session management NAS message may also be sent to the AMF entity together with the data transmission session management NAS message and the PDU session identifier.
  • Step 430 the AMF entity determines the terminal corresponding to the PDU session identifier according to the received PDU session identifier.
  • Step 440 The AMF entity carries the data transmission session management NAS message and the PDU session identifier in the form of load packets in the mobility management NAS message, and sends the mobility management NAS message to the terminal.
  • the AMF entity sends an indication identifier indicating that the NAS message is a data transmission session management NAS message to the terminal together with the data transmission session management NAS message and the PDU session identifier.
  • Step 450 The terminal determines that the received session management NAS message is a data transmission session management NAS message according to the received PDU session identifier, and reads the transmission data in the data transmission session management NAS message, and at the same time according to the PDU session identifier Determine the PDU session corresponding to the transmission data; and forward the transmission data to the session management layer of the terminal for processing.
  • the terminal determines that the received session management NAS message is a data transmission session management NAS message according to the indication identifier.
  • the call service corresponding to the N11 interface is transmitted between the SMF entity and the AMF entity The transmission data.
  • the first data transmission device includes a processor 500, a memory 501, and a transceiver 502;
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 when performing operations.
  • the transceiver 502 is used to receive and transmit data under the control of the processor 500.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 500 and various circuits of the memory represented by the memory 501 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 when performing operations.
  • the process disclosed in the embodiments of the present application may be applied to the processor 500 or implemented by the processor 500.
  • each step of the signal processing flow may be completed by instructions in the form of hardware integrated logic circuits or software in the processor 500.
  • the processor 500 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the embodiments of the present application
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and a register.
  • the storage medium is located in the memory 501, and the processor 500 reads the information in the memory 501 and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 500 is configured to read the program in the memory 501 and execute:
  • a data transmission session management NAS message including transmission data wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • the processor 500 is specifically configured to: send the data transmission session management NAS message and the PDU session identifier to an AMF entity, and send the received data to the receiving device through the AMF entity.
  • the processor 500 is further configured to: after determining that the trigger condition is satisfied, determine to use the data transmission session management NAS message to transmit the transmission data; wherein, the device is a terminal, and the trigger condition includes the following Part or all: the transmission data is small data, and the terminal needs to transmit data through a narrowband IoT base station; or the device is an SMF entity, and the trigger condition includes part or all of the following: the transmission data is small data
  • the terminal that performs data transmission with the SMF entity needs to transmit data through the narrowband Internet of Things base station.
  • the processor 500 is specifically configured to: select some cells in the protocol header of the session management NAS message, and generate a session management NAS message including a shortened protocol header according to the selected cells and the transmission data; or directly Generating the session management NAS message without the protocol header in the transmission data; or selecting some or all of the special cells in the protocol header of the session management NAS message, and generating the shortened protocol header according to the selected special cell and the transmission data
  • the session management NAS message wherein the length of the special cell is less than the length of the cell of the same type in the session management NAS message protocol header as the special cell.
  • the session management NAS message that does not include a protocol header is the transmission data.
  • the processor 500 is further configured to: send an indication identifier indicating that the session management NAS message is a data transmission session management NAS message to the data transmission session management NAS message and the PDU session identifier to The AMF entity.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the processor 500 is specifically configured to: the device is a terminal, and the data transmission session management NAS message and the PDU session identifier are carried in a mobility management NAS message and sent to the AMF entity; or
  • the device is an SMF entity, and sends the data transmission session management NAS message and the PDU session identifier to the AMF entity through an invocation service between the SMF entity and the AMF entity.
  • this is a second data transmission device provided by an embodiment of the present application.
  • the device includes: a generating module 600 and a first sending module 610.
  • the generating module 600 is configured to generate a data transmission session management non-access stratum NAS message containing transmission data, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management without a protocol header NAS news.
  • the first sending module 610 is configured to send the data transmission session management NAS message and the protocol data unit PDU session identifier to the receiving device.
  • a third data transmission device provided by an embodiment of the present application includes a processor 700, a memory 701, and a transceiver 702;
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 700 when performing operations.
  • the transceiver 702 is used to receive and transmit data under the control of the processor 700.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 700 and various circuits of the memory represented by the memory 701 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 700 when performing operations.
  • the process disclosed in the embodiments of the present application may be applied to the processor 700 or implemented by the processor 700.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 700 or instructions in the form of software.
  • the processor 700 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement or execute the embodiments of the present application
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and a register.
  • the storage medium is located in the memory 701, and the processor 700 reads the information in the memory 701 and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 700 is configured to read the program in the memory 701 and execute:
  • the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • the processor 700 is further configured to: send an indication identifier indicating that the session management NAS message is a data transmission session management NAS message to the data transmission session management NAS message and the PDU session identifier to The receiving device.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the processor 700 is specifically configured to: the sending device is a terminal, and send the received data transmission session management NAS message and the PDU session identifier to the calling service between the SMF entity and the AMF entity to The receiving device; or the sending device is an SMF entity, and the data transmission session management NAS message and the PDU session identifier are carried in a mobility management NAS message and sent to the receiving device.
  • this is a fourth data transmission device provided by an embodiment of the present application.
  • the device includes: a first receiving module 800 and a second sending module 810;
  • the first receiving module 800 is configured to receive a data transmission session management NAS message and a PDU session identifier sent by a sending device, wherein the data transmission session management NAS message is a session management NAS message shortening a protocol header or does not include a protocol header Session management NAS message;
  • the second sending module 810 is configured to send the received data transmission session management NAS message and the PDU session identifier to a receiving device.
  • a fifth data transmission device provided by an embodiment of the present application includes a processor 900, a memory 901, and a transceiver 902;
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 may store data used by the processor 900 when performing operations.
  • the transceiver 902 is used to receive and transmit data under the control of the processor 900.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 901 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 may store data used by the processor 900 when performing operations.
  • the process disclosed in the embodiments of the present application may be applied to the processor 900 or implemented by the processor 900.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 900 or instructions in the form of software.
  • the processor 900 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the embodiments of the present application
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and a register.
  • the storage medium is located in the memory 901, and the processor 900 reads the information in the memory 901 and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 900 is configured to read a program in the memory 901 and execute: receive a data transmission session management NAS message and a PDU session identifier sent by a sending device, where the data transmission session management NAS message is a session with a shortened protocol header Manage the NAS message or the session management NAS message that does not include the protocol header; read the transmission data carried in the data transmission session management NAS message, and determine the PDU session corresponding to the transmission data according to the PDU session identifier.
  • the processor 900 is specifically configured to receive the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity.
  • the processor 900 is further configured to: receive, through the AMF entity, an indication identifier sent by the sending device to indicate that the session management NAS message is a data transmission session management NAS message; wherein, the indication identifier is Received together with the data transmission session management NAS message and the PDU session identifier.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the processor 900 is further configured to: after determining that the session management NAS message is a data transmission session management NAS message according to the PDU session identifier, read the transmission data carried in the data transmission session management NAS message; or After determining that the session management NAS message is a data transmission session management NAS message according to the instruction identifier, read the transmission data carried in the data transmission session management NAS message.
  • the processor 900 is specifically configured to: the device is a terminal, and receive the data transmission session management NAS message and the PDU session identifier sent by the sending device through the mobility management NAS message sent by the AMF entity; or
  • the device is an SMF entity, and receives a data transmission session management NAS message and a PDU session identifier sent by the AMF entity through an invocation service between the SMF entity and the AMF entity.
  • the device includes: a second receiving module 1000 and a reading module 1010.
  • the second receiving module 1000 is configured to receive a data transmission session management NAS message and a PDU session identifier sent by a sending device, where the data transmission session management NAS message is a session management NAS message with a shortened protocol header or does not include a protocol header Session management NAS message;
  • the reading module 1010 is configured to read the transmission data carried in the data transmission session management NAS message, and determine the PDU session corresponding to the transmission data according to the PDU session identifier.
  • a method for data transmission is also provided in the embodiments of the present application, because the device corresponding to the method is a data transmission device in the embodiments of the present application, and the principle of the device to solve the problem is similar to the method Therefore, the implementation of this method can refer to the implementation of the device, and the repetition is not repeated here.
  • FIG. 11 it is a flowchart of a first data transmission method provided by an embodiment of the present application, and specifically includes the following steps:
  • Step 1100 the sending device generates a data transmission session management NAS message including transmission data, wherein the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • Step 1110 The sending device sends the data transmission session management NAS message and the protocol data unit PDU session identifier to the receiving device.
  • the sending device sends the data transmission session management NAS message and the PDU session identifier to the receiving device, including: the sending device sends the data transmission session management NAS message and the PDU session identifier to the AMF
  • the entity is sent to the receiving device through the AMF entity.
  • the method further includes: after the sending device determines that the trigger condition is satisfied, it determines to use the data transmission session management NAS message to transmit the transmission data;
  • the sending device is a terminal
  • the trigger conditions include some or all of the following: the transmission data is small data, and the terminal needs to transmit data through a narrowband Internet of Things base station; or the sending device is a session management function SMF
  • the trigger condition includes some or all of the following: the transmission data is small data, and a terminal that performs data transmission with the SMF entity needs to transmit data through a narrowband Internet of Things base station.
  • the sending device generating a data transmission session management NAS message including the transmission data includes: the sending device selects a part of cells in the protocol header of the session management NAS message, and generates based on the selected cells and the transmission data A session management NAS message including a shortened protocol header; or the sending device directly generates a session management NAS message that does not include a protocol header according to the transmission data; or the sending device selects some or all of the session management NAS message protocol header Special cell, generating the session management NAS message of the shortened protocol header according to the selected special cell and the transmission data; wherein the length of the special cell is smaller than that of the special message in the session management NAS message protocol header The length of cells of the same type.
  • the session management NAS message that does not include a protocol header is the transmission data.
  • the sending device sends the data transfer session management NAS message and the PDU session identifier to the AMF entity, and further includes: the sending device will be used to instruct the session management NAS message to be the data transfer session management NAS message Is sent to the AMF entity together with the data transmission session management NAS message and the PDU session identifier.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the sending device sends the data transmission session management NAS message and the PDU session identifier to an AMF entity, including: the sending device is a terminal, and the sending device sends the data transmission session management NAS message And the PDU session identifier is carried in a mobility management NAS message and sent to the AMF entity; or the sending device is an SMF entity, and the sending device passes the data transmission session management NAS message and the PDU session identifier through The calling service between the SMF entity and the AMF entity is sent to the AMF entity.
  • a method for data transmission is also provided in the embodiments of the present application. Since the device corresponding to the method is a device for data transmission in the embodiments of the present application, and the principle of the device to solve the problem is similar to the method, For the implementation of this method, please refer to the implementation of the device, and the repetition is not repeated here.
  • FIG. 12 it is a flowchart of a second data transmission method provided by an embodiment of the present application, and specifically includes the following steps:
  • Step 1200 The AMF entity receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, where the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • Step 1210 The AMF entity sends the received data transmission session management NAS message and the PDU session identifier to a receiving device.
  • the AMF entity receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, and further includes:
  • the AMF entity sends an indication identifier for instructing the session management NAS message to be a data transmission session management NAS message, together with the data transmission session management NAS message and the PDU session identifier to the receiving device.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the AMF entity sending the received data transmission session management NAS message and the PDU session identifier to a receiving device includes: the sending device is a terminal, and the AMF entity transmits the received data transmission
  • the session management NAS message and the PDU session identifier are sent to the receiving device through an invocation service between an SMF entity and an AMF entity; or the sending device is an SMF entity, and the AMF entity transmits the data transmission session management NAS message
  • the PDU session identifier is carried in a mobility management NAS message and sent to the receiving device.
  • a method for data transmission is also provided in the embodiments of the present application. Since the device corresponding to the method is a device for data transmission in the embodiments of the present application, and the principle of the device to solve the problem is similar to the method, therefore For the implementation of this method, please refer to the implementation of the device, and the repetition is not repeated here.
  • FIG. 13 it is a flowchart of a third data transmission method provided by an embodiment of this application, specifically including the following steps:
  • Step 1300 The receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, where the data transmission session management NAS message is a session management NAS message with a shortened protocol header or a session management NAS message without a protocol header;
  • Step 1310 The receiving end device reads the transmission data carried in the data transmission session management NAS message, and determines the PDU session corresponding to the transmission data according to the PDU session identifier.
  • the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device, including: the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity .
  • the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity, and further includes: the receiving device receives the data sent by the sending device through the AMF entity.
  • the indication session management NAS message is an indication identifier of the data transfer session management NAS message; wherein the indication identifier is received together with the data transfer session management NAS message and the PDU session identifier.
  • the PDU session identifier is used to indicate that the session management NAS message is a data transmission session management NAS message.
  • the method further includes:
  • the receiving device After the receiving device determines the session management NAS message as the data transmission session management NAS message according to the PDU session identifier, reads the transmission data carried in the data transmission session management NAS message; or the receiving device according to the indication identifier After determining that the session management NAS message is a data transmission session management NAS message, read the transmission data carried in the data transmission session management NAS message.
  • the receiving device receives the data transmission session management NAS message and the PDU session identifier sent by the sending device through the AMF entity, including: the receiving device is a terminal, and the receiving device sends the mobile through the AMF entity
  • the performance management NAS message receives the data transmission session management NAS message and the PDU session identifier sent by the sending device; or the receiving device is an SMF entity, and the receiving device receives the AMF through a call service between the SMF entity and the AMF entity
  • the data transmission session management NAS message and PDU session identifier sent by the entity including: the receiving device is a terminal, and the receiving device sends the mobile through the AMF entity
  • the performance management NAS message receives the data transmission session management NAS message and the PDU session identifier sent by the sending device; or the receiving device is an SMF entity, and the receiving device receives the AMF through a call service between the SMF entity and the AMF entity
  • An embodiment of the present application further provides a computer storable medium on which a computer program is stored, which when executed by a processor implements the steps of the method described in FIG. 11 or the steps of the method described in FIG. 12, Or implement the steps of the method described in FIG. 13 above.
  • the application can also be implemented in hardware and / or software (including firmware, resident software, microcode, etc.).
  • the present application may take the form of a computer-usable or computer-readable storage medium on a computer-readable storage medium with computer-usable or computer-readable program code implemented in the medium to be used by an instruction execution system or Used in conjunction with an instruction execution system.
  • a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with an instruction execution system, Use of device or equipment.

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Abstract

本申请公开了一种数据传输的方法和设备,用以解决现有技术中在数据传输时空口开销较大的问题。在本申请中发送设备生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;所述发送设备将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。由于传输数据的数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息,或不包含协议头的会话管理NAS消息,减小了会话管理NAS消息协议头的开销,因此减少了数据传输时的空口开销。

Description

一种数据传输的方法和设备
本申请要求在2018年11月14日提交中国专利局、申请号为201811354474.0、发明名称为“一种数据传输的方法和设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域,特别涉及一种数据传输的方法和设备。
背景技术
NextGen(下一代)网络架构中主要包括UE(User,终端)、AMF(Access and Mobility Management Function,接入和移动管理功能)实体、AN(Access Network,接入网)、SMF(Session Management Function,会话管理功能)实体、UPF(User Plane Function,用户面锚点)功能、DN(Data Network,数据网络)。
具体的,如图1所示为NextGen网络架构,AMF实体负责移动性管理,与UE和AN相连,SMF负责会话管理与UPF相连,主要负责管理UE与网络之间建立的PDU(Protocol Data Unit,协议数据单元)会话,当一个PDU会话建立时,SMF为这个会话选定UPF。NextGen网络中需要考虑对IOT(Internet of Things,物联网)通信的支持,其中一种重要的场景是物联网终端发送数据的周期较长,且发送数据量较少的小数据传输。
目前,小数据的传输是在UE附着到网络之后,先建立一个用于小数据传输的PDU会话,这个PDU会话仅建立控制面连接,不需要建立AN和UPF之间的N3隧道,在UE和AN之间的空口上也不需要建立用户面无线承载。之后需要进行数据传输时,直接在UE和SMF之间的会话管理NAS(Non Access Stratum,非接入层)消息中携带用户数据,SMF与UPF之间通过N4信令交互用户数据,UPF负责运营商网络与外部数据网络DN之间的用户数据交互。
在进行小数据传输时,会话管理NAS消息将作为一个负载报携带在移动性管理NAS消息中,由UE将移动性管理NAS消息发送给AMF实体,AMF实体接收到移动性管理NAS消息后直接将会话管理NAS消息发送给SMF实体,其中SMF实体是根据移动性管理NAS消息中的PDU会话标识确定的;在SMF实体接收到会话管理NAS消息后解析会话管理NAS消息中的传输数据;在此过程中在传输用户数据时,需要在用户数据之外嵌套一层会话管理NAS消息协议头和一层移动性管理NAS消息协议头,且两层NAS消息协议头中的部分信元是重复的,空口开销较大。
综上,在进行小数据传输时,由于两层NAS消息协议头中的部分信元是重复的,导致空口开销较大。
发明内容
本申请提供一种数据传输的方法和设备,用以解决现有技术中在数据传输时空口开销 较大的问题。
第一方面,本申请实施例提供一种数据传输的方法,该方法包括:
发送设备生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;所述发送设备将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
上述方法,发送设备生成包含传输数据的数据传输会话管理NAS消息,数据传输会话管理NAS消息是缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息,将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备,由于发送的数据传输会话管理NAS消息的协议头缩短或不存在协议头,因此减少了会话管理NAS消息协议头的开销,进而减少传输数据时的空口开销。
在一种可能的实现方式中,所述发送设备将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备时,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体,通过所述AMF实体发送给所述接收设备。
上述方法,发送设备通过AMF实体将数据传输会话管理NAS消息及PDU会话标识发送给接收设备,使数据传输会话管理NAS消息及PDU会话标识可以顺利发送到接收设备。
在一种可能的实现方式中,所述发送设备生成包含传输数据的数据传输会话管理NAS消息之前,所述发送设备确定满足触发条件后,确定采用所述数据传输会话管理NAS消息传输所述传输数据;
其中,所述发送设备为终端,所述触发条件包括下列的部分或全部:所述传输数据为小数据,所述终端需要通过窄带物联网基站传输数据;或所述发送设备为会话管理功能SMF实体,所述触发条件包括下列的部分或全部:所述传输数据为小数据,与所述SMF实体进行数据传输的终端需要通过窄带物联网基站传输数据。
上述方法,发送设备在确定满足传输数据为小数据,和/或终端需要通过窄带物联网基站传输数据后,确定采用所述数据传输会话管理NAS消息传输所述传输数据,保证在进行小数据传输时可以减少空口开销,且其他数据可以顺利传输。
在一种可能的实现方式中,所述发送设备生成包含传输数据的数据传输会话管理NAS消息时,所述发送设备选取会话管理NAS消息协议头中的部分信元,根据选取的信元及所述传输数据生成包含缩短协议头的会话管理NAS消息;或,所述发送设备直接根据所述传输数据生成不包含协议头的会话管理NAS消息;或,所述发送设备选取会话管理NAS消息协议头中的部分或全部的特殊信元,根据选取的特殊信元及所述传输数据生成所述缩短协议头的会话管理NAS消息;其中所述特殊信元的长度小于所述会话管理NAS消息协议头中与所述特殊信元同类型的信元的长度。
上述方法,给出发送设备生成所述数据传输会话管理NAS消息的多种方式,使生成的传输会话管理NAS消息的协议头缩短或不存在,减少了会话管理NAS消息协议头的开销,从而减少数据传输时的空口开销。
在一种可能的实现方式中,所述不包含协议头的会话管理NAS消息为所述传输数据。
上述方法,给出不包含协议头的会话管理NAS消息为传输数据本身,此时传输数据时仅进行数据的传输,减少数据传输时的空口开销。
在一种可能的实现方式中,所述发送设备将所述数据传输会话管理NAS消息及所述 PDU会话标识发送给AMF实体时,所述发送设备将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述AMF实体。
上述方法,发送设备在通过AMF实体向所述接收设备发送信息时,还将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识与数据传输会话管理NAS消息及PDU会话标识一起发送给AMF实体,以使AMF实体将接收到的信息全部转发给接收设备,进而接收设备在接收到指示标识后可以根据指示标识确定会话管理NAS消息为数据传输会话管理NAS消息,进而接收设备可以顺利读取所述数据传输会话管理NAS消息中的传输数据。
在一种可能的实现方式中,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
上述方法,PDU会话标识可以用于指示会话管理NAS消息为数据传输会话管理NAS消息,此时可以不发送指示标识,减少信息的传输,减少数据传输时的空口开销。
在一种可能的实现方式中,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体时,所述发送设备为终端,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述AMF实体;或所述发送设备为SMF实体,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述AMF实体。
上述方法,给出发送设备为终端即上行数据传输时,将数据传输会话管理NAS消息及PDU会话标识携带在移动性管理NAS消息中发送给AMF实体;当发送设备为SMF实体即下行数据传输时,将数据传输会话管理NAS消息及PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给AMF实体,给出具体的传输方案。
第二方面,本申请实施例提供一种数据传输的方法,该方法包括:
AMF实体接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
上述方法,AMF实体将接收到发送设备发送的数据传输会话管理NAS消息及PDU会话标识转发给接收设备,其中所述数据传输会话管理NAS消息为缩短协议有的会话管理NAS消息或不包含协议头的会话管理NAS消息,在将数据传输管理NAS消息数据传输的情况下,缩短会话管理NAS消息的协议头或使用不存在协议头的会话管理NAS消息,减少了会话管理NAS消息协议头的开销,从而减少数据传输时的空口开销。
在一种可能的实现方式中,所述AMF实体接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识时,所述AMF实体将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述接收设备。
上述方法,AMF实体将接收到的用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识发送给接收设备,以使接收设备根据所述指示标识确定所述会话管理NAS消息为数据传输会话管理NAS消息,进而方便接收设备读取所述数据传输会话管理 NAS消息中的传输数据。
在一种可能的实现方式中,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
上述方法,PDU会话标识可以用于指示会话管理NAS消息为数据传输会话管理NAS消息,此时可以不发送指示标识,减少信息的传输,减少数据传输时的空口开销。
在一种可能的实现方式中,所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备时,所述发送设备为终端,所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述接收设备;或所述发送设备为SMF实体,所述AMF实体将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述接收设备。
上述方法,给出发送设备为终端即上行数据传输时,AMF实体将数据传输会话管理NAS消息及PDU会话标识携带在移动性管理NAS消息转发给接收设备;当发送设备为SMF实体即下行数据传输时,AMF实体将数据传输会话管理NAS消息及PDU会话标识通过SMF实体和AMF实体之间的调用服务转发给接收设备,给出具体的传输方案。
第三方面,本申请实施例提供一种数据传输的方法,该方法包括:
接收设备接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;所述接收端设备读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
上述方法,接收设备接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,并读取所述数据传输会话管理NAS消息中的传输数据,将读取出的传输数据转发给根据PDU会话标识确定的PDU会话,其中所述数据传输会话管理NAS消息为短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息,使会话管理NAS消息的协议头减少或不存在,进而减少会话管理NAS消息协议头的开销,减少数据传输时的空口开销,同时在接收设备读取数据时,减少数据的读取量,加快读取传输数据的速率。
在一种可能的实现方式中,所述接收设备接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识时,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识。
上述方法,接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识,使接收设备可以顺利接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识。
在一种可能的实现方式中,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识时,所述接收设备通过所述AMF实体接收所述发送设备发送的用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识;其中,所述指示标识是与所述数据传输会话管理NAS消息及所述PDU会话标识一起接收的。
上述方法,接收设备在接收数据时,还通过AMF实体接收发送设备发送的用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,在接收到所述指示标识后,接收设备就可以确定会话管理NAS消息为数据传输会话管理NAS消息。
在一种可能的实现方式中,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
上述方法,PDU会话标识可以用于指示会话管理NAS消息为数据传输会话管理NAS消息,此时可以不发送指示标识,减少信息的传输,减少数据传输时的空口开销。
在一种可能的实现方式中,所述接收设备接收发送设备发送的数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据之前,所述接收设备根据所述PDU会话标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据;或所述接收设备根据所述指示标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据。
上述方法,接收设备可以根据接收到指示标识或PDU会话标识确定会话管理NAS消息为数据传输会话管理NAS消息,并根据所述数据传输会话管理NAS消息读取所述数据传输会话管理NAS消息中携带的传输数据,在确定会话管理NAS消息为数据传输会话管理NAS消息后,才可以准确的读取数据。
在一种可能的实现方式中,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识时,所述接收设备为终端,所述接收设备通过所述AMF实体发送的移动性管理NAS消息接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识;或所述接收设备为SMF实体,所述接收设备通过SMF实体和AMF实体之间的调用服务接收所述AMF实体发送的数据传输会话管理NAS消息及PDU会话标识。
上述方法,给出接收设备为终端即下行数据传输时,将接收AMF实体转发的数据传输会话管理NAS消息及PDU会话标识,此时数据传输会话管理NAS消息及PDU会话标识携带在移动性管理NAS消息中;当接收设备为SMF实体即上行数据传输时,将通过SMF实体和AMF实体之间的调用服务接收AMF实体转发的数据传输会话管理NAS消息及PDU会话标识,给出具体的传输方案。
第四方面,本申请实施例提供一种数据传输的设备,该设备包括:处理器、存储器及收发机;其中,所述处理器,用于读取存储器中的程序并执行:
生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
第五方面,本申请实施例提供一种数据传输的设备,该设备包括:处理器、存储器及收发机;其中,所述处理器,用于读取存储器中的程序并执行:
接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
第六方面,本申请实施例提供一种数据传输的设备,该设备包括:处理器、存储器及收发机;其中,所述处理器,用于读取存储器中的程序并执行:
接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS 消息;读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
第七方面,本申请实施例提供一种数据传输的设备,该设备包括:生成模块,第一发送模块;生成模块,用于生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;第一发送模块,用于将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
第八方面,本申请实施例提供一种数据传输的设备,该设备包括:第一接收模块,第二发送模块;第一接收模块,用于接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;第二发送模块,用于将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
第九方面,本申请实施例提供一种数据传输的设备,该设备包括:第二接收模块,读取模块;第二接收模块,用于接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;读取模块,用于读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
第十方面,本申请实施例提供的一种计算机可存储介质,其上存储有计算机程序,该程序被处理器执行时实现发送设备进行数据传输的方法的步骤,或实现AMF实体进行数据传输的方法的步骤,或实现接收设备进行数据传输的方法的步骤。
另外,第四方面至第十方面中任一种实现方式所带来的技术效果可参见第一方面与第三方面中不同实现方式所带来的技术效果,此处不再赘述。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简要介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为现有技术中NextGen网络架构的示意图;
图2A为本申请实施例提供的一种数据传输的系统结构图;
图2B我本申请实施例提供的另一种数据传输的系统结构图;
图3为本申请实施例提供的一种上行数据传输的方法流程图;
图4为本申请实施例提供的一种下行数据传输的方法流程图;
图5为本申请实施例提供的第一种数据传输的设备结构图;
图6为本申请实施例提供的第二种数据传输的设备结构图;
图7为本申请实施例提供的第三种数据传输的设备结构图;
图8为本申请实施例提供的第四种数据传输的设备结构图;
图9为本申请实施例提供的第五种数据传输的设备结构图;
图10为本申请实施例提供的第六种数据传输的设备结构图;
图11为本申请实施例提供的第一种数据传输的方法流程图;
图12为本申请实施例提供的第二种数据传输的方法流程图;
图13为本申请实施例提供的第三种数据传输的方法流程图。
具体实施方式
以下,对本申请实施例中的部分用语进行解释说明,以便于本领域技术人员理解。
(1)本申请实施例中,名词“网络”和“系统”经常交替使用,但本领域的技术人员可以理解其含义。
(2)本申请实施例中术语“多个”是指两个或两个以上,其它量词与之类似。
(3)“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
NextGen网络中需要考虑对物联网通信的支持,尤其是进行小数据传输。目前,小数据传输时,在终端附着到网络后,需要建立一个用于小数据传输的PDU会话,PDU会话仅建立控制面连接;当终端和网络侧设备进行小数据传输时,终端将需要传输的小数据携带在会话管理NAS消息中,将会话管理NAS消息作为一个负载包的形式携带在移动性管理NAS消息中发送给AMF实体,移动性管理NAS消息中还包括用于确定网络侧设备的PDU会话标识。AMF实体接收到移动性管理NAS消息后,根据PDU会话标识确定网络侧设备后,将会话管理NAS消息发送给网络侧设备,在此过程中不需要解析会话管理NAS消息。当网络侧设备接收到AMF实体发送的会话管理NAS消息后,解析会话管理NAS消息中携带的数据,并将解析出的数据发送给用户面功能实体。
其中,会话管理NAS消息中包含有会话管理NAS消息协议头,如表1所示:
表1
信元 是否必选 长度
协议标识 必选 1byte
PDU会话标识 必选 1byte
消息关联标识 必选 1byte
会话管理消息名称标识 必选 1byte
从表1中可知,会话管理NAS消息的协议头中携带有PDU会话标识,与移动性管理NAS消息中的PDU会话标识重复。
从上述内容可知,在小数据传输的方案中,需要传输的小数据外嵌套有两层NAS消息的协议头,一层为会话管理NAS消息协议头,一层为移动性管理NAS消息协议头,其两层NAS消息协议头中的部分或全部信元重复,使得数据传输时空口开销较大,但最外层的移动性管理NAS消息中的协议头是必须的,因此尽量减少会话管理NAS消息中的协议头来节省空口开销。
本申请在数据传输时提供一种数据传输会话管理NAS消息,其中数据传输会话管理NAS消息为缩短协议头的NAS消息,或不包含协议头的会话管理NAS消息用于携带需要传输的小数据,因此在传输数据过程中减少了会话管理NAS消息协议头的开销,进而减 少了传输小数据时的空口开销。
其中,所述终端,是一种具有无线通信功能的设备,可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气球和卫星上等)。所述终端可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)所述终端、增强现实(augmented reality,AR)所述终端、工业控制(industrial control)中的无线所述终端、无人驾驶(self driving)中的无线所述终端、远程医疗(remote medical)中的无线所述终端、智能电网(smart grid)中的无线所述终端、运输安全(transportation safety)中的无线所述终端、智慧城市(smart city)中的无线所述终端、智慧家庭(smart home)中的无线所述终端等;还可以是各种形式的UE,移动台(mobile station,MS),所述终端设备(terminal device)。
所述网络侧设备,是一种为所述终端提供无线通信功能的设备,包括但不限于:5G中的gNB、无线网络控制器(radio network controller,RNC)、节点B(node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved nodeB,或home node B,HNB)、基带单元(BaseBand Unit,BBU)、传输点(transmitting and receiving point,TRP)、发射点(transmitting point,TP)、移动交换中心等。
为了使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请作进一步地详细描述,显然,所描述的实施例仅仅是本申请一部份实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本申请保护的范围。
如图2A所示,为本申请实施例提供的一种数据传输的系统结构示意图,具体包括:发送设备20,接收设备40。
所述发送设备20,用于生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
所述接收设备40,用于收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
在本申请实施例中,发送设备生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息,并将数据传输会话管理NAS消息及PDU会话标识发送给接收设备,以使接收设备接收所述数据传输会话管理NAS消息及PDU会话标识,并读取所述数据传输会话管理NAS消息中携带的传输数据,且根据所述PDU会话标识确定所述传输数据对应的PDU会话,最终通过所述PDU会话转发所述传输数据;由于在本申请中用于进行数据传输的会话管理NAS消息是协议头缩短的会话管理NAS消息,或不包含协议头的会话管理NAS消息,减少了会话管理NAS消息协议头的开销,进而较少了数据传输的空口开销。
本申请实施例中,当所述发送设备确定满足触发条件后,所述发送设备才会确定采用所述数据传输会话管理NAS消息传输所述传输数据;并在确定采用所述数据传输会话管 理NAS消息后,生成包含有传输数据的数据传输会话管理NAS消息。
其中,所述发送设备为终端,所述触发条件包括下列的部分或全部:
所述传输数据为小数据;
所述终端需要通过窄带物联网基站传输数据。
具体的,当所述终端需要进行数据传输时,确定需要进行传输的传输数据为小数据;此时所述终端确定采用所述数据传输会话管理NAS消息进行数据传输,进而生成包含传输数据的数据传输会话管理NAS消息,并将所述包含传输数据的数据传输会话管理NAS消息发送给所述接收设备;或当所述终端需要进行数据传输时,确定需要传输的传输数据为小数据,且确定终端接入网络的类型为窄带物联网;则传输数据为小数据,且终端需要通过窄带物联网基站传输数据,确定采用所述数据传输会话管理NAS消息进行数据传输,进而生成包含传输数据的数据传输会话管理NAS消息,并将所述包含传输数据的数据传输会话管理NAS消息发送给所述接收设备。
其中,所述发送设备为会话管理功能SMF实体,所述触发条件包括下列的部分或全部:
所述传输数据为小数据;
与所述SMF实体进行数据传输的终端需要通过窄带物联网基站传输数据。
具体的,当所述SMF实体需要进行数据传输时,确定需要进行传输的传输数据为小数据;此时所述SMF实体确定采用所述数据传输会话管理NAS消息进行数据传输,进而生成包含传输数据的数据传输会话管理NAS消息,并将所述包含传输数据的数据传输会话管理NAS消息发送给所述接收设备;或当所述SMF实体需要进行数据传输时,确定需要传输的传输数据为小数据,且确定与所述SMF实体进行数据传输的终端接入网络的类型为窄带物联网;则所述SMF实体根据传输数据为小数据,且终端需要通过窄带物联网基站传输数据,确定采用所述数据传输会话管理NAS消息进行数据传输,进而生成包含传输数据的数据传输会话管理NAS消息,并将所述包含传输数据的数据传输会话管理NAS消息发送给所述接收设备。
具体的,通过下列方式生成包含传输数据的数据传输会话管理NAS消息:
方式一:根据会话管理NAS消息协议头中的部分信元及所述传输数据生成包含所述数据传输会话管理NAS消息。
可选的,所述发送设备选取会话管理NAS消息协议头中的部分信元,根据选取的信元及所述传输数据生成包含缩短协议头的会话管理NAS消息。
从表1中可知,会话管理NAS消息的协议头中包括的信元有协议标识、PDU会话标识、消息关联标识、会话管理消息名称标识;当发送设备确定生成数据传输会话管理NAS消息时,从会话管理NAS消息协议头的信元中选取一部分作为数据传输会话管理NAS消息中的协议头,在选取过程中随意的选取一部分。
在本申请实施例中,发送设备还可以根据与移动性管理NAS消息中协议头的信元进行对比,选取不重复的协议头的信元。
比如,由于在移动性管理NAS消息中存在PDU会话标识,会话管理NAS消息中的PDU会话标识属于冗余信元,因此在会话管理NAS消息协议头中选取部分信元时,选取协议标识、消息关联标识、会话管理消息名称标识中的部分或全部,若选取协议标识、消息关联标识、会话管理消息名称标识,根据选取的信元及所述传输数据生成数据传输会话 管理NAS消息;如表2所示,为本申请实施例中第一种数据传输会话管理NAS消息中包含的协议头及传输数据;
表2
协议标识(信元) 必选 1byte
消息关联标识(信元) 必选 1byte
会话管理消息名称标识(信元) 必选 1byte
传输数据 必选 Abyte
其中,传输数据的长度根据实际传输的数据长度而定。
此时,生成的数据传输会话管理NAS相比较表1对应的会话管理NAS消息的协议头信元减少,即协议头缩短,因此生成的数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息。
方式二:根据所述传输数据生成所述数据传输会话管理NAS消息。
可选的,所述发送设备直接根据所述传输数据生成不包含协议头的会话管理NAS消息。
由于,在数据传输过程中只是为读取会话管理NAS消息中的传输数据,因此在会话管理NAS消息中可以不包含协议头,只包含有传输数据。
可选的,所述不包含协议头的会话管理NAS消息可以为所述传输数据本身,及将所述传输数据及PDU会话标识发送给接收设备。
方式三,根据所述会话管理NAS消息协议头中的特殊信元生成所述数据传输会话管理NAS消息。
可选的,所述发送设备选取会话管理NAS消息协议头中的部分或全部的特殊信元,根据选取的特殊信元及所述传输数据生成所述缩短协议头的会话管理NAS消息;其中,所述特殊信元的长度小于所述会话管理NAS消息协议头中与所述特殊信元同类型的信元的长度。
从表1中可知,会话管理NAS消息的协议头中包括的信元有:长度为1byte的协议标识、长度为1byte的PDU会话标识、长度为1byte的消息关联标识、长度为1byte的会话管理消息名称标识,因此特殊信元可能为:长度为1/2 byte的协议标识、长度为1/2 byte的PDU会话标识、长度为1/2 byte的消息关联标识、长度为1/2 byte的会话管理消息名称标识;其中长度为1/2 byte作为特殊信息只是举例说明,长度还可以为1/4 byte、1/8byte等。
方式一中,以每个信元长度为1/2 byte作为特殊信元进行举例,选取特殊信元中的全部,即选取长度为1/2 byte的协议标识、长度为1/2 byte的PDU会话标识、长度为1/2 byte的消息关联标识、长度为1/2 byte的会话管理消息名称标识,如表3所示,为本申请实施例中第二种数据传输会话管理NAS消息中包含的协议头及传输数据;
表3
协议标识(信元) 必选 1/2 byte
PDU会话标识(信元) 必选 1/2 byte
消息关联标识(信元) 必选 1/2 byte
会话管理消息名称标识(信元) 必选 1/2 byte
传输数据 必选 A byte
其中,传输数据的长度根据实际传输的数据长度而定。
此时,生成的数据传输会话管理NAS消息相比较表1中对应的会话管理NAS消息的协议头信元长度减小,及协议头缩短,因此生成的数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息。
在本申请实施例中,还可以根据选取的信元、选取的特殊信元、及所述传输数据生成包含缩短协议头的会话管理NAS消息;
其中,所述选取的信元与选取的特殊信元不能为同类型。
比如在选取消息关联标识后,不能选取任何长度的消息关联标识。
如表4所示,为本申请实施例中第三种数据传输会话管理NAS消息中包含的协议头及传输数据;
表4
协议标识(信元) 必选 1byte
消息关联标识(信元) 必选 1/2 byte
会话管理消息名称标识(信元) 必选 1/4 byte
传输数据 必选 Abyte
其中,传输数据的长度根据实际传输的数据长度而定。
此时,生成的数据传输会话管理NAS相比较表1对应的会话管理NAS消息的协议头不仅信元减少,且选取的信元中部分信元的长度缩短,因此生成的数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息。
需要说明的是,上述在生成数据传输会话管理NAS消息时不能包含有同类型的协议头,且具体采用哪种方式生成数据传输会话管理NAS消息,根据部署在传输协议中的规定确定。还存在多种数据传输会话管理NAS消息不在一一例举。
在实施中,发送设备在确定所述传输数据为小数据和/或终端通过窄带物联网基站记入网络后,确定采用所述数据传输会话管理NAS消息传输所述传输数据,并根据选取的信元和/或选取的特殊信元,及传输数据生成传输所述传输数据时采用的数据传输会话管理NAS消息,可以准确的确定是否采用所述数据传输会话管理NAS消息,既可以顺利进行数据传输,同时还可以减少数据传输时产生的空口开销。
如图2B所示,为本申请实施例提供的第二种数据传输的系统结构示意图,所述数据传输的系统还包括AMF实体30;
所述AMF实体30,用于接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;将接收的所述数据传输会话管理NAS消息和PDU会话标识发送给接收设备。
具体的,所述发送设备将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备时,所述发送设备将所述数据传输会话管理NAS消息及PDU会话标识发送给AMF实体,通过所述AMF实体发送给接收设备。
相应的,当所述AMF实体接收到所述发送设备发送的数据传输会话管理NAS消息及 PDU会话标识后,根据所述PDU会话标识确定对应的接收设备,并将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
进一步的,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识,即所述接收所述AMF实体发送的数据传输会话管理NAS消息及PDU会话标识。
其中,所述AMF实体发送的数据传输会话管理NAS消息及PDU会话标识是AMF实体从发送设备处接收到的,因此所述AMF实体主要用于在发送设备与接收设备之间进行数据的转接传输。
在实施中,AMF实体用于将接收到的发送设备发送的数据传输会话管理NAS消息及PDU会话标识转发给接收设备,使接收设备可以顺利接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识转发给接收设备。
在进行数据传输时,存在上行数据传输和下行数据传输,在进行上行数据传输时,发送设备为终端,接收设备为SMF实体;在进行下行数据传输时,发送设备为SMF实体,接收设备为终端;具体的数据传输的过程参加下列实施例。
实施例一:上行数据传输。
在本申请实施例中,终端已经附着到网络上并建立了用于小数据传输的PDU会话。且终端与SMF实体在PDU会话建立过程中已经同步了所述PDU会话是用于小数据传输的信息,和/或同步终端是否通过窄带物联网基站接入网络的信息。
由于终端与SMF实体在PDU会话建立过程中就已经同步了所述PDU会话是用于小数据传输,或还同步了所述终端是否通过窄带物联网基站接入网络,进而确定终端是否通过窄带物联网基站传输数据,因此SMF实体在接收到所述PDU会话标识后,就可确定所述PDU会话标识是用于小数据传输的,进而确定接收到的会话管理NAS消息为数据传输会话管理NAS消息。
同时还可以使用指示标识指示所述会话管理NAS消息为数据传输会话管理NAS消息,当SMF实体接收到的信息中有指示标识,即可确定接收到的会话管理NAS消息为数据传输会话管理NAS消息。
下面针对上述两种情况分别进行介绍。
情况一:PDU会话标识用于指示NAS消息为数据传输会话管理NAS消息。
终端在确定传输数据需要进行传输后,判断所述传输数据是否为小数据,或确定自身是否通过窄带物联网基站传输数据。
终端确定所述传输数据为小数据,则确定采用数据传输会话管理NAS消息对所述传输数据进行传输;或终端确定所述传输数据为小数据,且确定自身通过窄带物联网基站传输数据,则确定采用数据传输会话管理NAS消息对所述传输数据进行传输。
终端生成包含所述传输数据的数据传输会话管理NAS消息,并将所述数据传输会话管理NAS消息及PDU会话标识携带在移动性管理NAS消息中发送给AMF实体。其中,所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息。
相应的,AMF实体接收所述终端发送的数据传输会话管理NAS消息及PDU会话标识,并根据接收到的PDU会话标识确定SMF实体,将所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述SMF实体。
进一步的,SMF实体通过SMF实体和AMF实体之间的调用服务接收所述AMF实体发送的数据传输会话管理NAS消息,及PDU会话标识。其中,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
SMF实体在接收到所述PDU会话标识后,根据终端与SMF实体同步的信息确定所述PDU会话标识是用于小数据传输的,进而确定接收到的会话管理NAS消息为数据传输会话管理NAS消息,SMF实体根据传输协议中规定的数据传输会话管理NAS消息对接收到的所述数据传输会话管理NAS消息进行解析,读取所述数据传输会话管理NAS消息中的传输数据,同时根据所述PDU会话标识确定所述传输数据对应的PDU会话。
SMF实体在确定所述传输数据后,将所述传输数据转发给根据所述PDU会话标识确定的UPF实体,以使所述UPF实体与外部数据网络之间进行所述传输数据交互。
情况二:指示标识用于指示NAS消息为数据传输会话管理NAS消息。
终端生成包含传输数据的数据传输会话管理NAS消息后,将所述数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识携带在移动性管理NAS消息中发送给AMF实体。其中,所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息。
相应的,AMF实体接收所述终端发送的包含有所述数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识的移动性管理NAS消息;并根据所述PDU会话标识确定SMF实体,将所述数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识通过SMF实体和AMF实体之间的调用服务发送给根据所述PDU会话标识确定的SMF实体。
进一步的,SMF实体通过SMF实体和AMF实体之间的调用服务接收所述AMF实体发送的数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识;SMF实体根据所述指示标识确定接收到的会话管理NAS消息为数据传输会话管理NAS消息,根据传输协议中规定的数据传输会话管理NAS消息对接收到的所述数据传输会话管理NAS消息进行解析,读取所述数据传输会话管理NAS消息中的传输数据,同时根据所述PDU会话标识确定所述传输数据对应的PDU会话。
SMF实体在确定所述传输数据后,将所述传输数据转发给根据所述PDU会话标识确定的UPF实体,以使所述UPF实体与外部数据网络之间进行所述传输数据交互。
如图3所示,为本申请实施例提供的一种上行数据传输的方法流程图,具体包括如下步骤:
步骤300,终端确定采用数据传输会话管理NAS消息后,生成包含有传输数据的数据传输会话管理NAS消息。
步骤310,终端将所述包含有传输数据的数据传输会话管理NAS消息作为一个负载包、及PDU会话标识携带在移动性管理NAS消息中,将所述移动性管理NAS消息发送给AMF实体。
其中,所述移动性管理NAS消息中还可以包括用于指示NAS消息为数据传输会话管理NAS消息的指示标识。
步骤320,AMF实体根据接收到的PDU会话标识确定SMF实体。
步骤330,AMF实体将所述数据传输会话管理NAS消息及PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述SMF实体。
可选的,所述AMF实体将用于指示NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及PDU会话标识一起发送给SMF实体。
步骤340,SMF实体根据接收到的PDU会话标识确定接收到的会话管理NAS消息为数据传输会话管理NAS消息,并读取所述数据传输会话管理NAS消息中的传输数据,同时根据所述PDU会话标识确定所述传输数据对应的PDU会话。
可选的,所述SMF实体根据指示标识确定接收到的会话管理NAS消息为数据传输会话管理NAS消息。
步骤350,SMF实体将所述传输数据转发给UPF实体。
实施例二:下行数据传输。
在本申请实施例中,终端已经附着到网络上,并且建立了用于小数据传输的PDU会话。终端与SMF实体在PDU会话建立过程中已经同步了所述PDU会话是用于小数据传输的信息,和/或同步终端是否通过窄带物联网基站接入网络的信息。
同实施例一,实施列二中的接收设备也可以根据PDU会话标识确定接收到的会话管理NAS消息为数据传输会话管理NAS消息,或根据指示标识确定接收到的会话管理NAS消息为数据传输会话管理NAS消息;下面分别进行介绍。
情况一:PDU会话标识用于指示NAS消息为数据传输会话管理NAS消息。
SMF实体通过PDU会话连接接收UPF实体发送的传输数据,其中所述传输数据为所述UPF实体从外部网络获得的。
SMF实体接收到所述传输数据后,确定接收传输数据时所使用的PDU会话连接对应的PDU会话是否为用于小数据传输的信息,若确定使用的PDU会话连接对应的PDU会话是用于小数据传输的信息,则确定所述传输数据为小数据,此时确定采用数据传输会话管理NAS消息对所述传输数据进行传输;或所述SMF实体确定所述传输数据为小数据,且确定与SMF实体进行数据传输终端通过窄带物联网基站传输数据,则确定采用数据传输会话管理NAS消息对所述传输数据进行传输。
SMF实体生成包含所述传输数据的数据传输会话管理NAS消息,并将所述数据传输会话管理NAS消息及PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给AMF实体。其中,所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息。
相应的,AMF通过SMF实体和AMF实体之间的调用服务接收SMF实体发送的数据传输会话管理NAS消息及PDU会话标识,并根据所述PDU会话标识确定所述PDU会话标识对应的终端。
所述AMF实体将所述数据传输会话管理NAS消息及PDU会话标识以负载包的形式携带在移动性管理NAS消息中发送给根据所述PDU会话标识确定的终端;
进一步的,所述终端接收到所述AMF实体发送的移动性管理NAS消息中的数据传输会话管理NAS消息及PDU会话标识。
其中,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
终端在接收到所述PDU会话标识后,根据终端与SMF实体同步的信息确定所述PDU会话标识是用于小数据传输的,进而确定接收到的会话管理NAS消息为数据传输会话管理NAS消息,终端根据传输协议中规定的数据传输会话管理NAS消息对接收到的所述数 据传输会话管理NAS消息进行解析,读取所述数据传输会话管理NAS消息中的传输数据,同时根据所述PDU会话标识确定所述传输数据对应的PDU会话。
终端在确定所述传输数据后,将所述传输数据转发给终端的会话管理层进行处理,其中所述终端的会话管理层时根据所述PDU会话标识确定的。
情况二:指示标识用于指示NAS消息为数据传输会话管理NAS消息。
SMF实体生成包含传输数据的数据传输会话管理NAS消息后,将所述数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识通过SMF实体和AMF实体之间的调用服务发送给AMF实体。
其中,所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息。
相应的,AMF实体接收所述SMF实体发送的包含有所述数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识的消息;并根据所述PDU会话标识确定所述PDU会话标识对应的终端,将所述数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识以负载包的形式携带在移动性管理NAS消息中,将移动性管理NAS消息发送给根据所述PDU会话标识确定的终端。
进一步的,终端接收AMF实体发送的移动性管理NAS消息中的数据传输会话管理NAS消息、PDU会话标识、及用于指示NAS消息为数据传输会话管理NAS消息的指示标识;终端根据所述指示标识确定接收到的会话管理NAS消息为数据传输会话管理NAS消息,根据传输协议中规定的数据传输会话管理NAS消息对接收到的所述数据传输会话管理NAS消息进行解析,读取所述数据传输会话管理NAS消息中的传输数据,同时根据所述PDU会话标识确定所述传输数据对应的PDU会话。
终端在确定所述传输数据后,将所述传输数据转发给终端的会话管理层进行处理,其中所述终端的会话管理层时根据所述PDU会话标识确定的。
如图4所示,为本申请实施例提供的一种下行数据传输的方法流程图,具体包括如下步骤:
步骤400,SMF实体接收UPF实体通过PDU会话连接发送的传输数据。
其中所述传输数据为所述UPF实体从外部数据网络获得的。
步骤410,SMF实体确定采用数据传输会话管理NAS消息后,生成包含有传输数据的数据传输会话管理NAS消息。
步骤420,SMF实体将所述数据传输会话管理NAS消息及PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给AMF实体。
其中,还可以将用于指示NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及PDU会话标识一起发送给AMF实体。
步骤430,AMF实体根据接收到的PDU会话标识确定所述PDU会话标识对应的终端。
步骤440,AMF实体将所述数据传输会话管理NAS消息及PDU会话标识以负载包的形式携带在移动性管理NAS消息中,并将所述移动性管理NAS消息发送给终端。
可选的,所述AMF实体将用于指示NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及PDU会话标识一起发送给终端。
步骤450,终端根据接收到的PDU会话标识确定接收到的会话管理NAS消息为数据 传输会话管理NAS消息,并读取所述数据传输会话管理NAS消息中的传输数据,同时根据所述PDU会话标识确定所述传输数据对应的PDU会话;并将所述传输数据转发给所述终端的会话管理层进行处理。
可选的,所述终端根据指示标识确定接收到的会话管理NAS消息为数据传输会话管理NAS消息。
在本申请实施例中,在SMF实体与所述AMF实体之间进行数据传输会话管理NAS消息、PDU会话标识等信息的传输时,通过N11接口对应的调用服务在SMF实体与AMF实体之间传输所述传输数据。
如图5所示,本申请实施例提供的第一种数据传输的设备,该设备包括处理器500、存储器501和收发机502;
处理器500负责管理总线架构和通常的处理,存储器501可以存储处理器500在执行操作时所使用的数据。收发机502用于在处理器500的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥,具体由处理器500代表的一个或多个处理器和存储器501代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。处理器500负责管理总线架构和通常的处理,存储器501可以存储处理器500在执行操作时所使用的数据。
本申请实施例揭示的流程,可以应用于处理器500中,或由处理器500实现。在实现过程中,信号处理流程的各步骤可以通过处理器500中的硬件的集成逻辑电路或软件形式的指令完成。处理器500可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或其他可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件,可以实现或执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器501,处理器500读取存储器501中的信息,结合其硬件完成信号处理流程的步骤。
具体地,处理器500,用于读取存储器501中的程序并执行:
生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
可选的,所述处理器500具体用于:将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体,通过所述AMF实体发送给所述接收设备。
可选的,所述处理器500还用于:确定满足触发条件后,确定采用所述数据传输会话管理NAS消息传输所述传输数据;其中,所述设备为终端,所述触发条件包括下列的部分或全部:所述传输数据为小数据,所述终端需要通过窄带物联网基站传输数据;或所述设备为SMF实体,所述触发条件包括下列的部分或全部:所述传输数据为小数据,与所述SMF实体进行数据传输的终端需要通过窄带物联网基站传输数据。
可选的,所述处理器500具体用于:选取会话管理NAS消息协议头中的部分信元,根据选取的信元及所述传输数据生成包含缩短协议头的会话管理NAS消息;或直接根据 所述传输数据生成不包含协议头的会话管理NAS消息;或选取会话管理NAS消息协议头中的部分或全部的特殊信元,根据选取的特殊信元及所述传输数据生成所述缩短协议头的会话管理NAS消息;其中所述特殊信元的长度小于所述会话管理NAS消息协议头中与所述特殊信元同类型的信元的长度。
可选的,所述不包含协议头的会话管理NAS消息为所述传输数据。
可选的,所述处理器500还用于:将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述AMF实体。
可选的,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
可选的,所述处理器500具体用于:所述设备为终端,将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述AMF实体;或所述设备为SMF实体,将所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述AMF实体。如图6所示,为本申请实施例提供的第二种数据传输的设备,该设备包括:生成模块600,第一发送模块610。
所述生成模块600,用于生成包含传输数据的数据传输会话管理非接入层NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息。
所述第一发送模块610,用于将所述数据传输会话管理NAS消息及协议数据单元PDU会话标识发送给接收设备。
如图7所示,本申请实施例提供的第三种数据传输的设备,该设备包括处理器700、存储器701和收发机702;
处理器700负责管理总线架构和通常的处理,存储器701可以存储处理器700在执行操作时所使用的数据。收发机702用于在处理器700的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥,具体由处理器700代表的一个或多个处理器和存储器701代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。处理器700负责管理总线架构和通常的处理,存储器701可以存储处理器700在执行操作时所使用的数据。
本申请实施例揭示的流程,可以应用于处理器700中,或由处理器700实现。在实现过程中,信号处理流程的各步骤可以通过处理器700中的硬件的集成逻辑电路或软件形式的指令完成。处理器700可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或其他可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件,可以实现或执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器701,处理器700读取存储器701中的信息,结合其硬件完成信号处理流程的步骤。
具体地,处理器700,用于读取存储器701中的程序并执行:
接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
可选的,所述处理器700还用于:将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述接收设备。
可选的,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
可选的,所述处理器700具体用于:所述发送设备为终端,将接收的所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述接收设备;或所述发送设备为SMF实体,将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述接收设备。
如图8所示,为本申请实施例提供的第四种数据传输的设备,该设备包括:第一接收模块800,第二发送模块810;
所述第一接收模块800,用于接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
所述第二发送模块810,用于将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
如图9所示,本申请实施例提供的第五种数据传输的设备,该设备包括处理器900、存储器901和收发机902;
处理器900负责管理总线架构和通常的处理,存储器901可以存储处理器900在执行操作时所使用的数据。收发机902用于在处理器900的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥,具体由处理器900代表的一个或多个处理器和存储器901代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。处理器900负责管理总线架构和通常的处理,存储器901可以存储处理器900在执行操作时所使用的数据。
本申请实施例揭示的流程,可以应用于处理器900中,或由处理器900实现。在实现过程中,信号处理流程的各步骤可以通过处理器900中的硬件的集成逻辑电路或软件形式的指令完成。处理器900可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或其他可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件,可以实现或执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器901,处理器900读取存储器901中的信息,结合其硬件完成信号处理流程的步骤。
具体地,处理器900,用于读取存储器901中的程序并执行:接收发送设备发送的数 据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
可选的,所述处理器900具体用于:通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识。
可选的,所述处理器900还用于:通过所述AMF实体接收所述发送设备发送的用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识;其中,所述指示标识是与所述数据传输会话管理NAS消息及所述PDU会话标识一起接收的。
可选的,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
可选的,所述处理器900还用于:根据所述PDU会话标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据;或根据所述指示标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据。
可选的,所述处理器900具体用于:所述设备为终端,通过所述AMF实体发送的移动性管理NAS消息接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识;或所述设备为SMF实体,通过SMF实体和AMF实体之间的调用服务接收所述AMF实体发送的数据传输会话管理NAS消息及PDU会话标识。
如图10所示,为本申请实施例提供的一种数据传输的设备,该设备包括:第二接收模块1000,读取模块1010。
所述第二接收模块1000,用于接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
所述读取模块1010,用于读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
基于同一发明构思,本申请实施例中还提供了一种数据传输的方法,由于该方法对应的设备是本申请实施例了一种数据传输的设备,并且该设备解决问题的原理与该方法相似,因此该方法的实施可以参见设备的实施,重复之处不再赘述。
如图11所示,为本申请实施例提供的第一种数据传输的方法流程图,具体包括如下步骤:
步骤1100,发送设备生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
步骤1110,所述发送设备将所述数据传输会话管理NAS消息及协议数据单元PDU会话标识发送给接收设备。
可选的,所述发送设备将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备,包括:所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体,通过所述AMF实体发送给所述接收设备。
可选的,所述发送设备生成包含传输数据的数据传输会话管理NAS消息之前,还包 括:所述发送设备确定满足触发条件后,确定采用所述数据传输会话管理NAS消息传输所述传输数据;其中,所述发送设备为终端,所述触发条件包括下列的部分或全部:所述传输数据为小数据,所述终端需要通过窄带物联网基站传输数据;或所述发送设备为会话管理功能SMF实体,所述触发条件包括下列的部分或全部:所述传输数据为小数据,与所述SMF实体进行数据传输的终端需要通过窄带物联网基站传输数据。
可选的,所述发送设备生成包含传输数据的数据传输会话管理NAS消息,包括:所述发送设备选取会话管理NAS消息协议头中的部分信元,根据选取的信元及所述传输数据生成包含缩短协议头的会话管理NAS消息;或所述发送设备直接根据所述传输数据生成不包含协议头的会话管理NAS消息;或所述发送设备选取会话管理NAS消息协议头中的部分或全部的特殊信元,根据选取的特殊信元及所述传输数据生成所述缩短协议头的会话管理NAS消息;其中所述特殊信元的长度小于所述会话管理NAS消息协议头中与所述特殊信元同类型的信元的长度。
可选的,所述不包含协议头的会话管理NAS消息为所述传输数据。
可选的,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体,还包括:所述发送设备将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述AMF实体。
可选的,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
可选的,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体,包括:所述发送设备为终端,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述AMF实体;或所述发送设备为SMF实体,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述AMF实体。
基于同一发明构思,本申请实施例中还提供一种数据传输的方法,由于该方法对应的设备是本申请实施例一种数据传输的设备,并且该设备解决问题的原理与该方法相似,因此该方法的实施可以参见设备的实施,重复之处不再赘述。
如图12所示,为本申请实施例提供的第二种数据传输的方法流程图,具体包括如下步骤:
步骤1200,AMF实体接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
步骤1210,所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
可选的,所述AMF实体接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,还包括:
所述AMF实体将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述接收设备。
可选的,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
可选的,所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备,包括:所述发送设备为终端,所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述接收设备;或所述发送设备为SMF实体,所述AMF实体将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述接收设备。
基于同一发明构思,本申请实施例中还提供一种数据传输的方法,由于该方法对应的设备是本申请实施例一种数据传输的设备,并且该设备解决问题的原理与该方法相似,因此该方法的实施可以参见设备的实施,重复之处不再赘述。
如图13所示,为本申请实施例提供的第三种数据传输的方法流程图,具体包括如下步骤:
步骤1300,接收设备接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
步骤1310,所述接收端设备读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
可选的,所述接收设备接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,包括:所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识。
可选的,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识,还包括:所述接收设备通过所述AMF实体接收所述发送设备发送的用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识;其中,所述指示标识是与所述数据传输会话管理NAS消息及所述PDU会话标识一起接收的。
可选的,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
可选的,所述接收设备接收发送设备发送的数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据之前,还包括:
所述接收设备根据所述PDU会话标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据;或所述接收设备根据所述指示标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据。
可选的,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识,包括:所述接收设备为终端,所述接收设备通过所述AMF实体发送的移动性管理NAS消息接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识;或所述接收设备为SMF实体,所述接收设备通过SMF实体和AMF实体之间的调用服务接收所述AMF实体发送的数据传输会话管理NAS消息及PDU会话标识。
本申请实施例还提供一种计算机可存储介质,其上存储有计算机程序,该程序被处理器执行时实现上述图11所述的方法的步骤,或实现上述图12所述的方法的步骤,或实现上述图13所述的方法的步骤。
以上参照示出根据本申请实施例的方法、装置(系统)和/或计算机程序产品的框图和/或流程图描述本申请。应理解,可以通过计算机程序指令来实现框图和/或流程图示图的 一个块以及框图和/或流程图示图的块的组合。可以将这些计算机程序指令提供给通用计算机、专用计算机的处理器和/或其它可编程数据处理装置,以产生机器,使得经由计算机处理器和/或其它可编程数据处理装置执行的指令创建用于实现框图和/或流程图块中所指定的功能/动作的方法。
相应地,还可以用硬件和/或软件(包括固件、驻留软件、微码等)来实施本申请。更进一步地,本申请可以采取计算机可使用或计算机可读存储介质上的计算机程序产品的形式,其具有在介质中实现的计算机可使用或计算机可读程序代码,以由指令执行系统来使用或结合指令执行系统而使用。在本申请上下文中,计算机可使用或计算机可读介质可以是任意介质,其可以包含、存储、通信、传输、或传送程序,以由指令执行系统、装置或设备使用,或结合指令执行系统、装置或设备使用。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (40)

  1. 一种数据传输的方法,其特征在于,该方法包括:
    发送设备生成包含传输数据的数据传输会话管理非接入层NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    所述发送设备将所述数据传输会话管理NAS消息及协议数据单元PDU会话标识发送给接收设备。
  2. 如权利要求1所述的方法,其特征在于,所述发送设备将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备,包括:
    所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识发送给接入和移动管理功能AMF实体,通过所述AMF实体发送给所述接收设备。
  3. 如权利要求1所述的方法,其特征在于,所述发送设备生成包含传输数据的数据传输会话管理NAS消息之前,还包括:
    所述发送设备确定满足触发条件后,确定采用所述数据传输会话管理NAS消息传输所述传输数据;
    其中,所述发送设备为终端,所述触发条件包括下列的部分或全部:
    所述传输数据为小数据;
    所述终端需要通过窄带物联网基站传输数据;
    或者,所述发送设备为会话管理功能SMF实体,所述触发条件包括下列的部分或全部:
    所述传输数据为小数据;
    与所述SMF实体进行数据传输的终端需要通过窄带物联网基站传输数据。
  4. 如权利要求1所述的方法,其特征在于,所述发送设备生成包含传输数据的数据传输会话管理NAS消息,包括:
    所述发送设备选取会话管理NAS消息协议头中的部分信元,根据选取的信元及所述传输数据生成包含缩短协议头的会话管理NAS消息;或
    所述发送设备直接根据所述传输数据生成不包含协议头的会话管理NAS消息;或
    所述发送设备选取会话管理NAS消息协议头中的部分或全部的特殊信元,根据选取的特殊信元及所述传输数据生成所述缩短协议头的会话管理NAS消息;其中所述特殊信元的长度小于所述会话管理NAS消息协议头中与所述特殊信元同类型的信元的长度。
  5. 如权利要求3所述的方法,其特征在于,所述不包含协议头的会话管理NAS消息为所述传输数据。
  6. 如权利要求2所述的方法,其特征在于,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体,还包括:
    所述发送设备将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述AMF实体。
  7. 如权利要求1所述的方法,其特征在于,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
  8. 如权利要求2所述的方法,其特征在于,所述发送设备将所述数据传输会话管理 NAS消息及所述PDU会话标识发送给AMF实体,包括:
    所述发送设备为终端,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述AMF实体;或
    所述发送设备为SMF实体,所述发送设备将所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述AMF实体。
  9. 一种数据传输的方法,其特征在于,该方法包括:
    接入和移动管理功能AMF实体接收发送设备发送的数据传输会话管理非接入层NAS消息及协议数据单元PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
  10. 如权利要求9所述的方法,其特征在于,所述AMF实体接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,还包括:
    所述AMF实体将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述接收设备。
  11. 如权利要求9所述的方法,其特征在于,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
  12. 如权利要求9所述的方法,其特征在于,所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备,包括:
    所述发送设备为终端,所述AMF实体将接收的所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述接收设备;或
    所述发送设备为SMF实体,所述AMF实体将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述接收设备。
  13. 一种数据传输的方法,其特征在于,该方法包括:
    接收设备接收发送设备发送的数据传输会话管理非接入层NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    所述接收端设备读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述协议数据单元PDU会话标识确定所述传输数据对应的PDU会话。
  14. 如权利要求13所述的方法,其特征在于,所述接收设备接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,包括:
    所述接收设备通过接入和移动管理功能AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识。
  15. 如权利要求14所述的方法,其特征在于,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识,还包括:
    所述接收设备通过所述AMF实体接收所述发送设备发送的用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识;
    其中,所述指示标识是与所述数据传输会话管理NAS消息及所述PDU会话标识一起接收的。
  16. 如权利要求13所述的方法,其特征在于,所述PDU会话标识用于指示会话管理 NAS消息为数据传输会话管理NAS消息。
  17. 如权利要求13~16任一所述的方法,其特征在于,所述接收设备接收发送设备发送的数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据之前,还包括:
    所述接收设备根据所述PDU会话标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据;或
    所述接收设备根据所述指示标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据。
  18. 如权利要求14所述的方法,其特征在于,所述接收设备通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识,包括:
    所述接收设备为终端,所述接收设备通过所述AMF实体发送的移动性管理NAS消息接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识;或
    所述接收设备为SMF实体,所述接收设备通过SMF实体和AMF实体之间的调用服务接收所述AMF实体发送的数据传输会话管理NAS消息及PDU会话标识。
  19. 一种数据传输的设备,其特征在于,该设备包括:处理器、存储器及收发机;
    所述收发机,在处理器的控制下进行数据的接收和发送;
    所述存储器,存储计算机指令;
    所述处理器,用于读取所述计算机指令,执行以下操作:
    生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
  20. 如权利要求19所述的设备,其特征在于,所述操作具体包括:
    将所述数据传输会话管理NAS消息及所述PDU会话标识发送给AMF实体,通过所述AMF实体发送给所述接收设备。
  21. 如权利要求19所述的设备,其特征在于,所述操作进一步包括:
    确定满足触发条件后,确定采用所述数据传输会话管理NAS消息传输所述传输数据;
    其中,所述设备为终端,所述触发条件包括下列的部分或全部:
    所述传输数据为小数据;
    所述终端需要通过窄带物联网基站传输数据;或
    所述设备为SMF实体,所述触发条件包括下列的部分或全部:
    所述传输数据为小数据;
    与所述SMF实体进行数据传输的终端需要通过窄带物联网基站传输数据。
  22. 如权利要求19所述的设备,其特征在于,所述操作具体包括:
    选取会话管理NAS消息协议头中的部分信元,根据选取的信元及所述传输数据生成包含缩短协议头的会话管理NAS消息;或
    直接根据所述传输数据生成不包含协议头的会话管理NAS消息;或
    选取会话管理NAS消息协议头中的部分或全部的特殊信元,根据选取的特殊信元及所述传输数据生成所述缩短协议头的会话管理NAS消息;其中所述特殊信元的长度小于所述会话管理NAS消息协议头中与所述特殊信元同类型的信元的长度。
  23. 如权利要求22所述的设备,其特征在于,所述不包含协议头的会话管理NAS消 息为所述传输数据。
  24. 如权利要求20所述的设备,其特征在于,所述操作进一步包括:
    将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述AMF实体。
  25. 如权利要求19所述的设备,其特征在于,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
  26. 如权利要求20所述的设备,其特征在于,所述操作具体包括:
    所述设备为终端,将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述AMF实体;或
    所述设备为SMF实体,将所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述AMF实体。
  27. 一种数据传输的设备,其特征在于,该设备包括:处理器、存储器及收发机;
    所述收发机,在处理器的控制下进行数据的接收和发送;
    所述存储器,存储计算机指令;
    所述处理器,用于读取所述计算机指令,执行以下操作:
    接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
  28. 如权利要求27所述的设备,其特征在于,所述操作进一步包括:
    将用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识,与所述数据传输会话管理NAS消息及所述PDU会话标识一起发送给所述接收设备。
  29. 如权利要求27所述的设备,其特征在于,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
  30. 如权利要求27所述的设备,其特征在于,所述操作具体包括:
    所述发送设备为终端,将接收的所述数据传输会话管理NAS消息及所述PDU会话标识通过SMF实体和AMF实体之间的调用服务发送给所述接收设备;或
    所述发送设备为SMF实体,将所述数据传输会话管理NAS消息及所述PDU会话标识携带在移动性管理NAS消息中发送给所述接收设备。
  31. 一种数据传输的设备,其特征在于,该设备包括:处理器、存储器及收发机;
    所述收发机,在处理器的控制下进行数据的接收和发送;
    所述存储器,存储计算机指令;
    所述处理器,用于读取所述计算机指令,执行以下操作:
    接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
  32. 如权利要求31所述的设备,其特征在于,所述操作具体包括:
    通过AMF实体接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标 识。
  33. 如权利要求32所述的设备,其特征在于,所述操作进一步包括:
    通过所述AMF实体接收所述发送设备发送的用于指示会话管理NAS消息为数据传输会话管理NAS消息的指示标识;
    其中,所述指示标识是与所述数据传输会话管理NAS消息及所述PDU会话标识一起接收的。
  34. 如权利要求31所述的设备,其特征在于,所述PDU会话标识用于指示会话管理NAS消息为数据传输会话管理NAS消息。
  35. 如权利要求31~34任一所述的设备,其特征在于,所述操作进一步包括:
    根据所述PDU会话标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据;或
    根据所述指示标识确定会话管理NAS消息为数据传输会话管理NAS消息后,读取所述数据传输会话管理NAS消息中携带的传输数据。
  36. 如权利要求32所述的设备,其特征在于,所述操作具体包括:
    所述设备为终端,通过所述AMF实体发送的移动性管理NAS消息接收所述发送设备发送的数据传输会话管理NAS消息及PDU会话标识;或
    所述设备为SMF实体,通过SMF实体和AMF实体之间的调用服务接收所述AMF实体发送的数据传输会话管理NAS消息及PDU会话标识。
  37. 一种数据传输的设备,其特征在于,该设备包括:
    生成模块,用于生成包含传输数据的数据传输会话管理NAS消息,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    第一发送模块,用于将所述数据传输会话管理NAS消息及PDU会话标识发送给接收设备。
  38. 一种数据传输的设备,其特征在于,该设备包括:
    第一接收模块,用于接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    第二发送模块,用于将接收的所述数据传输会话管理NAS消息及所述PDU会话标识发送给接收设备。
  39. 一种数据传输的设备,其特征在于,该设备包括:
    第二接收模块,用于接收发送设备发送的数据传输会话管理NAS消息及PDU会话标识,其中所述数据传输会话管理NAS消息为缩短协议头的会话管理NAS消息或不包含协议头的会话管理NAS消息;
    读取模块,用于读取所述数据传输会话管理NAS消息中携带的传输数据,并根据所述PDU会话标识确定所述传输数据对应的PDU会话。
  40. 一种计算机可存储介质,其上存储有计算机程序,其特征在于,该程序被处理器执行时实现如权利要求1~8任一所述方法的步骤,或权利要求9~12任一所述方法的步骤,或权利要求13~18任一所述方法的步骤。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054142A1 (zh) * 2009-11-03 2011-05-12 上海贝尔股份有限公司 一种汇聚来自机器终端设备的多个业务数据的方法和设备
CN104969578A (zh) * 2013-04-17 2015-10-07 华为技术有限公司 数据传输方法、装置及系统
CN106332178A (zh) * 2015-06-18 2017-01-11 中国移动通信集团公司 一种ip协议头压缩的方法、装置、用户设备及基站
CN108696950A (zh) * 2017-03-17 2018-10-23 电信科学技术研究院 一种会话重建的方法、装置、amf、smf及终端

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130265937A1 (en) * 2012-04-09 2013-10-10 Puneet Jain Machine type communication (mtc) via non-access stratum layer
US10205507B2 (en) * 2015-08-28 2019-02-12 Tejas Networks, Ltd. Relay architecture, relay node, and relay method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054142A1 (zh) * 2009-11-03 2011-05-12 上海贝尔股份有限公司 一种汇聚来自机器终端设备的多个业务数据的方法和设备
CN104969578A (zh) * 2013-04-17 2015-10-07 华为技术有限公司 数据传输方法、装置及系统
CN106332178A (zh) * 2015-06-18 2017-01-11 中国移动通信集团公司 一种ip协议头压缩的方法、装置、用户设备及基站
CN108696950A (zh) * 2017-03-17 2018-10-23 电信科学技术研究院 一种会话重建的方法、装置、amf、smf及终端

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