WO2022152092A1 - Procédé et appareil de contrôle de transmission de données - Google Patents

Procédé et appareil de contrôle de transmission de données Download PDF

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Publication number
WO2022152092A1
WO2022152092A1 PCT/CN2022/071138 CN2022071138W WO2022152092A1 WO 2022152092 A1 WO2022152092 A1 WO 2022152092A1 CN 2022071138 W CN2022071138 W CN 2022071138W WO 2022152092 A1 WO2022152092 A1 WO 2022152092A1
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WO
WIPO (PCT)
Prior art keywords
network device
terminal
information
context information
sdt
Prior art date
Application number
PCT/CN2022/071138
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English (en)
Chinese (zh)
Inventor
孙建成
傅婧
Original Assignee
大唐移动通信设备有限公司
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Publication of WO2022152092A1 publication Critical patent/WO2022152092A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a data transmission control method and device.
  • a terminal may be in any of the following RRC states: an idle state (idle state), an inactive state (inactive state), and a connected state.
  • an idle state idle state
  • an inactive state inactive state
  • a connected state When the terminal is in the connected state, the terminal and the network device perform data transmission.
  • the terminal When the terminal is in an idle state or an inactive state, the terminal generally does not perform data transmission with the network side.
  • the base station serving the terminal when the terminal enters the inactive state is called the anchor base station, and the terminal has mobility.
  • the terminal in the inactive state moves to the coverage of other base stations except the anchor base station, and the terminal
  • the other base station obtains the context information of the terminal from the anchor base station, and then the terminal requests the other base station for RRC connection recovery to enter the connected state and perform data transmission in the connected state.
  • small data transmission means that when the amount of data to be transmitted is less than a certain threshold, or when the number of packets of data to be transmitted is less than a certain number, the terminal can remain in the inactive state, without entering the connection state, the terminal and the network side can be connected. The data to be transmitted is transmitted between them.
  • the present application provides a data transmission control method and apparatus, and provides a relevant solution when a terminal needs to perform SDT for a scenario in which a terminal in an inactive state accesses other network devices other than the anchor network device.
  • the present application provides a data transmission control method, applied to a first network device, including:
  • the first information is used to indicate that the terminal in the inactive state needs to perform SDT
  • the first network device is the network device currently accessed by the terminal in the inactive state
  • the second network device It is the anchor network device of the terminal, and the anchor network device is the network device that provides services for the terminal when the terminal enters the inactive state
  • Receive part of the context information of the terminal sent by the second network device where the part of the context information is used by the first network device to send the uplink SDT data of the terminal to the second network device and/or send the downlink SDT data of the terminal to the terminal.
  • the partial context information includes a Radio Link Control (Radio Link Control, RLC) configuration of at least one SDT bearer.
  • RLC Radio Link Control
  • sending the first information to the second network device includes:
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • receive part of the context information of the terminal sent by the second network device including:
  • a context acquisition request failure message of the terminal sent by the second network device is received, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the method before receiving the partial context information of the terminal sent by the second network device, the method further includes:
  • Receive part of the context information of the terminal sent by the second network device including:
  • a newly added message sent by the second network device is received, where the newly added message includes part of the context information of the terminal.
  • the method further includes:
  • Receive the uplink SDT data sent by the terminal and send the uplink SDT data to the second network device according to the partial context information; and/or,
  • Receive the downlink SDT data of the terminal sent by the second network device and send the downlink SDT data to the terminal according to part of the context information.
  • the method further includes:
  • second address information is sent to the second network device, where the second address information is used for the second network device to forward downlink SDT data of the terminal to the first network device.
  • the method further includes:
  • the second network device After receiving the downlink non-SDT data from the terminal in the core network, the second network device sends the complete context information of the terminal or the remaining context information of the terminal except the partial context information.
  • the method further includes:
  • the method before sending the third address information to the second network device, the method further includes:
  • the third address information is sent to the second network device.
  • the third information is also used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the method also includes:
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the method also includes:
  • the method further includes:
  • the method also includes:
  • the fourth information After receiving the complete context information or removing the remaining context information, according to the fourth information, initiate the transfer of the anchor point network device of the terminal from the second network device to the first network device.
  • the method further includes:
  • the fifth information send a request message for obtaining the context of the terminal to the first network device
  • the complete context information of the terminal sent by the first network device is received.
  • receive fifth information sent by the terminal including:
  • the present application provides a data transmission control method, which is applied to a second network device, and the method includes:
  • the device is the anchor network device of the terminal, and the anchor network device is the network device that provides services for the terminal when the terminal enters the inactive state;
  • part of the context information of the terminal is sent to the first network device, and the part of the context information is used for the first network device to send the terminal's uplink SDT data to the second network device and/or send the terminal's downlink SDT data to the terminal.
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • Receiving the first information sent by the first network device includes:
  • a context acquisition request message of the terminal sent by the first network device is received, and the context information message includes the first information.
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • send part of the context information of the terminal to the first network device including:
  • a context acquisition request failure message is sent to the first network device, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the method before sending the partial context information of the terminal to the first network device according to the first information, the method further includes:
  • part of the context information of the terminal is sent to the first network device, including:
  • a new message is sent to the first network device, where the new message includes part of the context information of the terminal.
  • the method further includes:
  • the method further includes:
  • the second address information sent by the first network device is received, and the second address information is used for the second network device to forward downlink SDT data of the terminal to the first network device.
  • the method further includes:
  • the complete context information of the terminal or the remaining context information of the terminal except the partial context information is sent to the first network device.
  • the method further includes:
  • the downlink non-SDT data of the terminal is forwarded to the first network device.
  • the method before receiving the third address information sent by the first network device, the method further includes:
  • the third information is also used to implicitly indicate the anchor network device to which the terminal needs to be transferred.
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal.
  • the method further includes:
  • the method further includes:
  • the complete context information of the terminal or the remaining context information of the terminal except the partial context information is sent to the first network device.
  • the present application provides a data transmission control apparatus, which is applied to a first network device, and the apparatus includes: a memory, a transceiver, and a processor;
  • a transceiver for sending and receiving data under the control of the processor
  • a processor that reads the computer program in memory and performs the following operations:
  • the first information is used to indicate that the terminal in the inactive state needs to perform SDT
  • the first network device is the network device currently accessed by the terminal in the inactive state
  • the second network device It is the anchor network device of the terminal, and the anchor network device is the network device that provides services for the terminal when the terminal enters the inactive state
  • Receive part of the context information of the terminal sent by the second network device where the part of the context information is used by the first network device to send the uplink SDT data of the terminal to the second network device and/or send the downlink SDT data of the terminal to the terminal.
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • sending the first information to the second network device includes:
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • receive part of the context information of the terminal sent by the second network device including:
  • a context acquisition request failure message of the terminal sent by the second network device is received, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the processor is further configured to perform the following operations:
  • Receive part of the context information of the terminal sent by the second network device including:
  • a newly added message sent by the second network device is received, where the newly added message includes part of the context information of the terminal.
  • the processor is further configured to perform the following operations:
  • the processor is further configured to perform the following operations:
  • the device After sending the first information to the second network device, after receiving part of the context information of the terminal sent by the second network device, send second address information to the second network device, where the second address information is used by the second network device to send to the first network
  • the device forwards the downlink SDT data of the terminal.
  • the processor is further configured to perform the following operations:
  • the processor is further configured to perform the following operations:
  • the processor is further configured to perform the following operations:
  • the third address information is sent to the second network device.
  • the third information is also used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the processor is also used to perform the following operations:
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the processor is also used to perform the following operations:
  • the processor is further configured to perform the following operations:
  • the fourth information After receiving the complete context information or removing the remaining context information, according to the fourth information, initiate the transfer of the anchor point network device of the terminal from the second network device to the first network device.
  • the processor is further configured to perform the following operations:
  • the fifth information send a request message for obtaining the context of the terminal to the first network device
  • the complete context information of the terminal sent by the first network device is received.
  • receive fifth information sent by the terminal including:
  • the present application provides a data transmission control apparatus, which is applied to a second network device, the apparatus comprising: a memory, a transceiver, and a processor;
  • a transceiver for sending and receiving data under the control of the processor
  • a processor that reads the computer program in memory and performs the following operations:
  • the device is the anchor network device of the terminal, and the anchor network device is the network device that provides services for the terminal when the terminal enters the inactive state;
  • part of the context information of the terminal is sent to the first network device, and the part of the context information is used for the first network device to send the terminal's uplink SDT data to the second network device and/or send the terminal's downlink SDT data to the terminal.
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • receiving the first information sent by the first network device includes:
  • a context acquisition request message of the terminal sent by the first network device is received, and the context information message includes the first information.
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • send part of the context information of the terminal to the first network device including:
  • a context acquisition request failure message is sent to the first network device, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the processor is further configured to perform the following operations:
  • the first information before sending the partial context information of the terminal to the first network device, send a context acquisition request failure message to the first network device according to the first information;
  • part of the context information of the terminal is sent to the first network device, including:
  • a new message is sent to the first network device, where the new message includes part of the context information of the terminal.
  • the processor is further configured to perform the following operations:
  • the core network After sending the partial context information of the terminal to the first network device, receive the uplink SDT data of the terminal sent by the second network device according to the partial context information, and send the data to the terminal according to the remaining context information except the partial context information in the complete partial context information of the terminal.
  • the core network sends upstream SDT data; and/or,
  • the processor is further configured to perform the following operations:
  • the first network device After receiving the first information sent by the first network device, send first address information to the first network device, where the first address information is used by the first network device to forward the uplink SDT of the terminal to the second network device; and/or,
  • the second address information is used by the second network device to send the first information to the first network device.
  • the network device forwards the downlink SDT data of the terminal.
  • the processor is further configured to perform the following operations:
  • the first information after sending part of the context information of the terminal to the first network device, receive downlink non-SDT data of the terminal from the core network;
  • the complete context information of the terminal or the remaining context information of the terminal except the partial context information is sent to the first network device.
  • the processor is further configured to perform the following operations:
  • the downlink non-SDT data of the terminal is forwarded to the first network device.
  • the processor is further configured to perform the following operations:
  • the third information is also used to implicitly indicate the anchor network device to which the terminal needs to be transferred.
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal.
  • the processor is further configured to perform the following operations: after receiving the downlink non-SDT data from the terminal of the core network, send fourth information to the first network device, where the fourth information is used to display the anchor point indicating that the terminal needs to be transferred Network equipment.
  • the processor is further configured to perform the following operations: after sending part of the context information of the terminal to the first network device according to the first information, receive a context acquisition request message of the terminal sent by the first network device;
  • the complete context information of the terminal or the remaining context information of the terminal except the partial context information is sent to the first network device.
  • the present application provides a data transmission control apparatus, which is applied to a first network device, and the apparatus includes:
  • a sending unit configured to send first information to the second network device, where the first information is used to indicate that the terminal in the inactive state needs to perform SDT, wherein the first network device is the network device currently accessed by the terminal in the inactive state , the second network device is the anchor network device of the terminal, and the anchor network device is the network device that provides services for the terminal when the terminal enters the inactive state;
  • the receiving unit is configured to receive part of the context information of the terminal sent by the second network device, and the part of the context information is used by the first network device to send the uplink SDT data of the terminal to the second network device and/or send the downlink SDT data of the terminal to the terminal.
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • sending the first information to the second network device includes:
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • receive part of the context information of the terminal sent by the second network device including:
  • a context acquisition request failure message of the terminal sent by the second network device is received, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the receiving unit is further configured to receive a context acquisition request failure message of the terminal sent by the second network device before receiving the partial context information of the terminal sent by the second network device;
  • Receive part of the context information of the terminal sent by the second network device including:
  • a newly added message sent by the second network device is received, where the newly added message includes part of the context information of the terminal.
  • the receiving unit is further configured to receive the uplink SDT data sent by the terminal after receiving part of the context information of the terminal sent by the second network device, and/or receive the terminal sent by the second network device.
  • the sending unit is further configured to send the uplink SDT data to the second network device according to the partial context information; and/or send the downlink SDT data to the terminal according to the partial context information.
  • the receiving unit is further configured to receive the first address information sent by the second network device after the sending unit sends the first information to the second network device, where the first address information is used by the first network device to send the second network device to the second network device. equipment forwards the upstream SDT data of the terminal; and/or,
  • the sending unit is further configured to send second address information to the second network device after the receiving unit receives part of the context information of the terminal sent by the second network device, where the second address information is used by the second network device before sending the first network device to the first network device. Transfer the downlink SDT data of the terminal.
  • the receiving unit is further configured to, after receiving the partial context information of the terminal sent by the second network device, receive the complete context of the terminal sent by the second network device after receiving the downlink non-SDT data from the terminal of the core network. information or the remaining context information of the terminal except for part of the context information.
  • the sending unit is further configured to send third address information to the second network device after the receiving unit receives the complete context information or the remaining context information, where the third address information is used by the second network device to send the information to the first network device.
  • the sending unit is further configured to send third address information to the second network device after the receiving unit receives the complete context information or the remaining context information, where the third address information is used by the second network device to send the information to the first network device.
  • the receiving unit is further configured to receive the downlink non-SDT data of the terminal forwarded by the second network device according to the third address information.
  • the receiving unit is further configured to receive the third information sent by the second network device before the sending unit sends the third address information to the second network device, where the third information is used to indicate that the downlink non-SDT data of the terminal needs to be preceded. change;
  • the sending unit is further configured to send third address information to the second network device according to the third information.
  • the third information is also used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the apparatus further includes: a processing unit;
  • the processing unit is configured to initiate the transfer of the anchor point network device of the terminal from the second network device to the first network device according to the third information after the receiving unit receives the complete context information or the remaining context information.
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the apparatus further includes: a processing unit;
  • the processing unit is configured to initiate the transfer of the anchor point network device of the terminal from the second network device to the first network device after the receiving unit receives the complete context information or the remaining context information.
  • the receiving unit is further configured to receive fourth information sent by the second network device, where the fourth information is used to display the anchor network device indicating that the terminal needs to be transferred;
  • the apparatus further includes: a processing unit;
  • the processing unit is configured to initiate the transfer of the anchor point network device of the terminal from the second network device to the first network device according to the third information after the receiving unit receives the complete context information or the remaining context information.
  • the receiving unit is further configured to receive fifth information sent by the terminal after receiving part of the context information of the terminal sent by the second network device, where the fifth information is used to indicate that the terminal needs to send uplink non-SDT data;
  • a sending unit further configured to send a request message for obtaining the context of the terminal to the first network device according to the fifth information
  • the receiving unit is further configured to receive complete context information of the terminal sent by the first network device.
  • receive fifth information sent by the terminal including:
  • the present application provides a data transmission control apparatus, which is applied to a second network device, and the apparatus includes:
  • a receiving unit configured to receive first information sent by the first network device, where the first information is used to indicate that the terminal in the inactive state needs to perform SDT, wherein the first network device is the network currently accessed by the terminal in the inactive state equipment, the second network equipment is the anchor point network equipment of the terminal, and the anchor point network equipment is the network equipment that provides services for the terminal when the terminal enters the inactive state;
  • the sending unit is configured to send part of the context information of the terminal to the first network device according to the first information, and the part of the context information is used for the first network device to send the uplink SDT data of the terminal to the second network device and/or to send the terminal's data to the terminal. Downstream SDT data.
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • receiving the first information sent by the first network device includes:
  • a context acquisition request message of the terminal sent by the first network device is received, and the context information message includes the first information.
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • send part of the context information of the terminal to the first network device including:
  • a context acquisition request failure message is sent to the first network device, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the sending unit is further configured to send a context acquisition request failure message to the first network device according to the first information before sending part of the context information of the terminal to the first network device according to the first information;
  • part of the context information of the terminal is sent to the first network device, including:
  • a new message is sent to the first network device, where the new message includes part of the context information of the terminal.
  • the receiving unit is further configured to: after the sending unit sends the partial context information of the terminal to the first network device, receive the uplink SDT data of the terminal sent by the second network device according to the partial context information, and/or receive data from the terminal. Downlink SDT data of the terminal of the core network;
  • the sending unit is further configured to send uplink SDT data to the core network according to the remaining context information except the partial context information in the complete partial context information of the terminal, and/or, according to the remaining context information of the terminal, send downlink to the first network device SDT data.
  • the sending unit is also used to:
  • the receiving unit After receiving the first information sent by the first network device, the receiving unit sends first address information to the first network device, where the first address information is used by the first network device to forward the uplink SDT of the terminal to the second network device; and/ or,
  • the receiving unit is further configured to receive the second address information sent by the first network device after the sending unit sends part of the context information of the terminal to the second network device, and the second address information is used for the second network device to send the first network device before the first network device. Transfer the downlink SDT data of the terminal.
  • the receiving unit is further configured to receive downlink non-SDT data from the terminal of the core network after sending part of the context information of the terminal to the first network device according to the first information;
  • the sending unit is further configured to send the complete context information of the terminal or the remaining context information of the terminal except the partial context information to the first network device.
  • the receiving unit is further configured to receive third address information sent by the first network device after the sending unit sends the complete context information or the remaining context information to the first network device, where the third address information is used by the second network device forwarding the downlink non-SDT data of the terminal to the first network device;
  • the sending unit is further configured to forward the downlink non-SDT data of the terminal to the first network device according to the third address information.
  • the sending unit is further configured to send third information to the first network device before the receiving unit receives the third address information sent by the first network device, where the third information is used to indicate that the downlink non-SDT data of the terminal needs to be preceded. change.
  • the third information is also used to implicitly indicate the anchor network device to which the terminal needs to be transferred.
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal.
  • the sending unit is further configured to send fourth information to the first network device after the receiving unit receives the downlink non-SDT data from the terminal of the core network, where the fourth information is used to display the anchor network indicating that the terminal needs to be transferred. equipment.
  • the receiving unit is further configured to, after the sending unit sends part of the context information of the terminal to the first network device according to the first information, receive a context acquisition request message of the terminal sent by the first network device;
  • the sending unit is further configured to send the complete context information of the terminal or the remaining context information of the terminal except the partial context information to the first network device.
  • the present application provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause a processor to execute any one of the first aspect or the second aspect. method.
  • the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method according to any one of the first aspect or the second aspect.
  • the present application provides a data transmission control system, including the first network device as described in any of the above, the second network device as described in any of the above, the third network device as described in any of the above, and a terminal.
  • the present application provides a data transmission control method and device.
  • a first network device sends first information to a second network device to indicate that a terminal in an inactive state needs to perform SDT, and then the second network device sends the first information according to the first network device.
  • Partial context information of the terminal not the complete context information of the terminal. It avoids sending some context information of the terminal that the first network device does not need to use to the first network device, saving signaling overhead, not only ensuring that the first network device can process the SDT data of the terminal, but also making the SDT process of the terminal simpler, Moreover, for a scenario in which a terminal in an inactive state accesses other network devices other than the anchor network device, a related solution is provided when the terminal needs to perform SDT.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application
  • FIG. 2 is a flowchart of a data transmission control method provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of a data transmission control method provided by another embodiment of the present application.
  • FIG. 5 is a flowchart of a data transmission control method provided by another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a data transmission control apparatus provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a data transmission control apparatus provided by another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a data transmission control apparatus provided by another embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a data transmission control apparatus provided by another embodiment of the present application.
  • the term "and/or” describes the relationship between related objects, indicating that there can be three relationships, for example, A and/or B, which can mean that A exists alone, A and B exist simultaneously, and B exists alone. a situation.
  • the character "/” generally indicates that the related objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • the terminal in the inactive state needs to perform data transmission. If the network device currently accessed by the terminal and the anchor network device of the terminal are not the same network device, the network device currently accessed by the terminal will initiate a context acquisition process to the anchor network device. For the terminal in the inactive state to perform SDT, the terminal does not need to enter the connected state, and there is no need to perform anchor point transfer and path conversion. However, the security info is kept in the anchor network device and the currently accessed network device for a period of time, which does not conform to the SA3 security policy. Therefore, the current anchor network device does not need to send the complete context information of the terminal to the current terminal. Access network equipment, wherein at least security info in the context information of the terminal does not need to be sent to the network equipment currently accessed by the terminal.
  • the embodiments of the present application provide a data transmission control method and device.
  • the network device currently accessed by the terminal indicates to the anchor point network device of the terminal that the terminal needs to perform SDT, and the anchor point
  • the network device learns that the terminal needs to perform SDT it sends part of the context information of the terminal to the network device currently accessed by the terminal, instead of sending the complete context information of the terminal, so as to avoid sending some of the terminal that is not needed by the network device currently accessed by the terminal.
  • the context information is sent to the network equipment currently accessed by the terminal, which not only ensures that the network equipment currently accessed by the terminal can process the SDT data of the terminal, but also makes the SDT process of the terminal simpler, and removes the anchor for the terminal access in the inactive state.
  • a related solution is provided.
  • the method and the device are conceived based on the same application. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated here.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • general packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • time division duplex time division duplex
  • TDD Time division duplex
  • the terminal involved in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal may be different.
  • the terminal may be called user equipment (User Equipment, UE).
  • a wireless terminal may communicate with one or more core networks (Core Network, CN) via a Radio Access Network (RAN), and the wireless terminal may be a mobile terminal, such as a mobile phone (or "cellular" phone) and computers with mobile terminals, which may be portable, pocket-sized, hand-held, computer built-in or vehicle mounted mobile devices, for example, which exchange language and/or data with the wireless access network.
  • Core Network Core Network
  • RAN Radio Access Network
  • a wireless terminal may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, A remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device) are not limited in the embodiments of the present application.
  • the network device involved in the embodiments of the present application may be a base station, and the base station may include a plurality of cells providing services for the terminal.
  • the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface, or other names.
  • the network equipment can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal and the rest of the access network, which may include the Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a Global System for Mobile Communications (GSM) or a Code Division Multiple Access (Code Division Multiple Access, CDMA). ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long term evolution (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiments of the present application.
  • a network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.
  • One or more antennas can be used between the network device and the terminal for multiple input multiple output (Multi Input Multi Output, MIMO) transmission, and the MIMO transmission can be single user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO ( Multiple User MIMO, MU-MIMO).
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • the communication system includes a terminal 110 and a plurality of network devices.
  • one A terminal is shown as an example, and two network devices are shown as an example (the network device 120 and the network device 130 respectively).
  • the network device serving the terminal 110 is the network device 120, and the network device 120 may also be referred to as the anchor point network device of the terminal.
  • the anchor network device of the terminal and the network device currently accessed by the terminal are not the same network device.
  • the terminal 110 currently needs to perform SDT, for example, a user operates a chat tool installed in the terminal 110 to perform a small amount of text chat, how to operate the above-mentioned network device 120 and network device 130 can use the technical solutions of the present application.
  • the technical solutions are described in detail below using various embodiments.
  • FIG. 2 is a flowchart of a data transmission control method provided by an embodiment of the present application. As shown in FIG. 2 , the method of this embodiment may include:
  • the first network device sends first information to the second network device.
  • the second network device receives the first information sent by the first network device.
  • the terminal moves to the coverage of the first network device and accesses the first network device.
  • the first network device is the network device currently accessed by the terminal in the inactive state, and the first network device is not the anchor network device of the terminal.
  • the second network device is the anchor network device of the terminal, and specifically refers to a network device that provides services for the terminal when the terminal enters an inactive state. Wherein, the first network device and the second network device are not the same network device.
  • the first network device determines that the terminal in the inactive state needs to perform SDT. For example, the terminal sends indication information to the currently accessed first network device to indicate that the terminal needs to perform SDT.
  • the first network device receives the instruction sent by the terminal. After the information is received, it is determined that the terminal needs to perform SDT according to the above-mentioned indication information.
  • the indication information may be included in an RRC Resume Request message (RRC Resume Request message) sent by the terminal to the first network device.
  • the first network device sends first information to the anchor network device (ie, the second network device) of the terminal, where the first information is used to indicate that the terminal needs to perform SDT.
  • the second network device sends part of the context information of the terminal to the first network device according to the first information.
  • the first network device receives part of the context information of the terminal sent by the second network device.
  • the second network device determines, according to the first information, that the terminal needs to perform SDT, and does not need to transfer the first network device to the first network device from the anchor network device.
  • the second network device does not need to perform path conversion, so the security information in some context information of the terminal is not used in the first network device, and the first network device does not need to send the complete context information of the terminal to the second network device. Therefore, the first network device sends part of the context information of the terminal to the second network device, where the part of the context information is used for the first network device to send the uplink SDT data of the terminal to the second network device and/or send the downlink SDT data of the terminal to the terminal .
  • part of the context information of the terminal does not include security information (Security info) of the terminal
  • part of the context information of the terminal includes an RLC configuration, such as the RLC configuration of at least one SDT bearer.
  • the bearer of the at least one SDT may be the bearer of all SDTs of the terminal, or may be the bearer of part of the SDT of the terminal.
  • the bearer of the SDT is, for example, an SDT data radio bearer (Data Radio Bearer, DRB).
  • the second network device can send the uplink SDT data of the terminal to the second network device according to the part of the context information of the terminal, or can also send the uplink SDT data of the terminal to the second network device according to the part of the context information of the terminal.
  • the second network device can send the uplink SDT data of the terminal to the second network device according to the part of the context information of the terminal.
  • the second network device can also send the uplink SDT data of the terminal to the second network device according to the part of the context information of the terminal.
  • Part of the context information sending the terminal's downlink SDT data to the terminal.
  • the first network device receives the uplink SDT data of the terminal sent by the terminal, and the first network device then processes the uplink SDT data of the terminal according to part of the context information of the terminal, Send the processed uplink SDT data to the second network device.
  • the second network device receives the downlink SDT data of the terminal from the core network, and the second network device processes the downlink SDT data and sends it to the first network device.
  • the first network device receives the downlink SDT data sent by the second network device, and then processes the downlink SDT data of the terminal according to part of the context information of the terminal, and sends the processed downlink SDT data to the terminal.
  • the first network device sends first information indicating that the terminal in the inactive state needs to perform SDT to the second network device, and then the second network device sends the terminal's information according to the first network device.
  • Partial contextual information not the full contextual information of the terminal. It avoids sending some context information of the terminal that the first network device does not need to use to the first network device, saving signaling overhead, not only ensuring that the first network device can process the SDT data of the terminal, but also making the SDT process of the terminal simpler, Moreover, for a scenario in which a terminal in an inactive state accesses other network devices other than the anchor network device, a related solution is provided when the terminal needs to perform SDT.
  • FIG. 3 is a flowchart of a data transmission control method provided by another embodiment of the present application. As shown in FIG. 3 , the method of this embodiment may include:
  • the terminal sends an RRC recovery request message to a first network device.
  • the first network device receives the RRC recovery request message sent by the terminal.
  • a terminal in an inactive state needs to perform SDT transmission. For example, when uplink SDT data needs to be sent, the terminal sends an RRC recovery request message to the first network device.
  • the RRC recovery request message includes indication information for indicating that the terminal needs to perform SDT.
  • the first network device sends a request message (Retrieve UE Context Request message) of the terminal to the second network device.
  • the second network device receives a context acquisition request message of the terminal sent by the first network device.
  • the first network device determines that the terminal needs to perform SDT, and then the first network device sends a context acquisition request message of the terminal to the second network device.
  • the message includes first information, and the first information is used to indicate that the terminal in the inactive state needs to perform SDT.
  • the first information is used to indicate a cause value (cause value) of requesting the context information of the terminal, and the first information in this embodiment indicates that the reason for requesting the context information of the terminal is that the terminal needs to perform SDT.
  • the above-mentioned UE Context Request message includes cause value: SDT.
  • the second network device sends the terminal's obtaining context request failure message (Retrieve UE Context Failure message) to the first network device.
  • the first network device receives the terminal's context acquisition request failure message sent by the second network device.
  • perform S303 that is, after the second network device receives the context acquisition request message from the terminal, it determines that the terminal needs to perform SDT according to the first information in the context acquisition request message, The second network device sends a context acquisition request failure message of the terminal to the first network device, where the context acquisition context request failure message includes part of the context information of the terminal.
  • the second network device sends a failure message of obtaining a context request of the terminal to the first network device.
  • the first network device receives the terminal's context acquisition request failure message sent by the second network device.
  • the second network device sends the newly added message to the first network device.
  • the first network device receives the newly added message of the terminal sent by the second network device.
  • S303a and S303b perform S303a and S303b, that is, after the second network device receives the context acquisition request message from the terminal, it determines, according to the first information in the context acquisition request message, that the terminal needs SDT is performed, and the second network device sends the terminal's obtaining context request failure message to the first network device.
  • the second network device also sends a newly added message to the first network device according to the first information, where the newly added message includes the context information of the terminal.
  • the newly added message may be referred to as a UE context transfer message (UE Context Transfer message).
  • the second network device in this embodiment sends a context acquisition request failure message to the first network device without changing the existing context acquisition request process;
  • the first network device sends part of the context information of the terminal, and can carry more content through a new message subsequently, which is more flexible.
  • the method of this embodiment further includes:
  • the second network device sends the first address information to the first network device.
  • the first network device receives the first address information sent by the second network device.
  • the second network device further sends first address information to the first network device, where the first address information is used for the first network device to forward the uplink SDT data of the terminal to the second network device.
  • the first address information may also be referred to as an upstream SDT tunnel (tunnel(s)).
  • the first address information is address information of the second network device, and the address information includes an IP address and a port number.
  • the second network device will allocate address information for uplink for each SDT bearer in the at least one SDT bearer, respectively.
  • the first address The information includes address information respectively allocated by the second network device for the at least one SDT bearer to be used for uplink.
  • the bearer of the at least one SDT is the bearer of N SDTs, where N is an integer greater than or equal to 1, the first address information includes N pieces of address information, and the bearers of the N SDTs correspond to the N pieces of address information respectively.
  • S303 or S303b and S304 are performed simultaneously, for example, the first address information and part of the context information of the terminal may be included in the same message (such as the new message in S303b) and sent by the second network device to the first network device. .
  • S304 is performed after S303 or S303b, and the first address information is included in a message different from the context acquisition request failure message in S303 and the newly added message in S303b, and is sent by the second network device to the first network. equipment.
  • the first network device sends the second address information to the second network device.
  • the second network device receives the second address information sent by the first network device.
  • the second address information is address information of the first network device.
  • the first network device after receiving the partial context information of the terminal sent by the second network device, the first network device also sends second address information to the second network device, and the second address information is used by the second network device to send the first network device to the first network device.
  • the device forwards the downlink SDT data of the terminal.
  • the second address information may also be referred to as a downlink SDT tunnel (tunnel(s)).
  • the second address information is address information of the first network device, and the address information includes an IP address and a port number.
  • the first network device will allocate address information for downlink to each SDT bearer in the at least one SDT bearer, and the second address The information includes address information respectively allocated by the first network device for the bearer of at least one SDT for downlink.
  • the bearer of the at least one SDT is the bearer of N SDTs, where N is an integer greater than or equal to 1, the second address information includes N pieces of address information, and the bearers of the N SDTs correspond to the N pieces of address information respectively.
  • the context acquisition request failure message in S303 and the newly added message in S303b may further include information used to indicate the request to allocate address information for downlink SDT (also referred to as downlink SDT tunnel).
  • downlink SDT also referred to as downlink SDT tunnel
  • the method of this embodiment may further include S306-S308:
  • the terminal sends the uplink SDT data to the first network device.
  • the first network device sends the uplink SDT data to the second network device according to the partial context information and the first address information.
  • the second network device receives the uplink SDT data sent by the first network device.
  • the second network device sends the uplink SDT data to the core network according to the remaining context information of the terminal.
  • the first network device receives the uplink SDT data of the terminal sent by the terminal, and the first network device processes the uplink SDT data according to part of the context information. For example, the first network device processes the received uplink SDT data from the terminal into PDCP PDUs according to the partial context information (RLC configuration), and sends the processed PDCP PDUs to the second network device according to the above-mentioned first address information. Specifically, the first network device sends the PDCP PDU to the second network device according to the address information corresponding to the bearer of the uplink SDT data in the first address information. The second network device processes the received PDCP PDU according to the remaining context information of the terminal, and sends the processed PDCP PDU to the core network.
  • RLC configuration partial context information
  • the first network device sends the PDCP PDU to the second network device according to the address information corresponding to the bearer of the uplink SDT data in the first address information.
  • the second network device processes the received PDCP PDU according to the
  • the method of this embodiment may further include S309-S313:
  • the second network device receives downlink SDT data from the terminal of the core network.
  • the second network device sends downlink SDT data to the first network device according to the remaining context information of the terminal and the second address information. Correspondingly, the second network device receives the downlink SDT data sent by the first network device.
  • the first network device sends downlink SDT data to the terminal according to the partial context information.
  • the terminal receives the downlink SDT data sent by the first network device.
  • the second network device receives downlink SDT data from the terminal in the core network, and the second network device processes the downlink SDT data according to the remaining context information of the terminal.
  • the first network device processes the received downlink SDT data from the core network into PDCP PDUs according to the remaining context information (RLC configuration), and sends the processed PDCP PDUs to the first network device according to the above-mentioned second address information.
  • the second network device sends the PDCP PDU to the first network device according to the address information corresponding to the bearer of the downlink SDT data in the second address information.
  • the first network device processes the received PDCP PDU according to the remaining context information of the terminal, for example, performs RLC, MAC and physical layer processing, and sends the downlink SDT data obtained after processing to the terminal.
  • the method of this embodiment further includes:
  • the second network device sends a context release command message of the terminal to the first network device.
  • the first network device receives the context release command message of the terminal sent by the second network device.
  • the second network device sends a context release command message (UE Context Release Command message) of the terminal to the first network device.
  • UE Context Release Command message UE Context Release Command message
  • the context release command message of the terminal also carries an RRC release message (RRC Release message).
  • the second network device sends an RRC release message to the terminal.
  • the terminal receives the RRC release message sent by the second network device.
  • the second network device After receiving the context release request message, the second network device sends an RRC release message to the terminal, so that the terminal enters an inactive state or an idle state.
  • the first network device notifies the second network device that the terminal needs to perform SDT through a request message for obtaining the context of the terminal, and then the second network device fails to send the request for obtaining the context of the terminal to the first network device Some contextual information for messages and endpoints.
  • the first network device determines not to perform anchor network device transfer and path transfer according to the terminal's context acquisition request failure message, and then the first network device performs SDT data transmission of the terminal according to partial context information of the terminal.
  • the present application avoids sending some context information of the terminal that the first network device does not need to use to the first network device, which saves signaling overhead, not only ensures that the first network device can process the SDT data of the terminal, but also makes the SDT data of the terminal possible.
  • the process is simpler, and for a scenario in which a terminal in an inactive state accesses other network devices except the anchor network device, a related solution is provided when the terminal needs to perform SDT.
  • FIG. 4 is a flowchart of a data transmission control method provided by another embodiment of the present application. As shown in FIG. 4 , the method of this embodiment executes S301- After S311, it can also include:
  • the second network device receives downlink non-SDT data from a terminal of a core network.
  • the second network device sends the complete context information of the terminal or the remaining context information of the terminal to the first network device.
  • the first network device receives the complete context information of the terminal or the remaining context information of the terminal sent by the second network device.
  • the second network device receives the downlink non-SDT data of the terminal from the core network, and the second network device decides to transfer the anchor network according to the received downlink non-SDT data of the terminal device, and then the second network device sends the complete context information of the terminal or the remaining context information other than the partial context information in the complete context information of the terminal to the first network device.
  • the complete context information or the remaining context information may be sent by the second network device to the first network device through a newly added message.
  • the newly added message may be referred to as a UE context transfer message (UE Context Transfer message).
  • the first network device sends third address information to the second network device.
  • the second network device receives the third address information sent by the first network device.
  • the second network device may also send third address information to the first network device, where the third address information is used for the second network
  • the device forwards the downlink non-SDT data of the terminal to the first network device.
  • the third address information may also be referred to as a downlink non-SDT forwarding tunnel (forwarding tunnel).
  • the third address information is address information of the second network device, and the address information includes an IP address and a port number.
  • the second network device before performing S403, the second network device sends third information to the first network device, where the third information is used to indicate that the downlink non-SDT data of the terminal needs to be forwarded. Then, the second network device executes the above-mentioned S404.
  • the third information may be sent by the second network device to the first network device during the transfer of the complete context information or the remaining context information of the terminal.
  • the third information is included in the same complete context information or remaining context information.
  • the message (such as the UE Context Transfer message mentioned in S402) is sent by the second network device to the first network device to save signaling overhead.
  • the message carrying the third information and the message carrying the complete context information or the remaining context information in S402 may not be the same message.
  • the third information is further used to indicate a bearer of downlink non-SDT data to be forwarded (ie DRB), and the second network device allocates third address information for the bearer of downlink non-SDT data according to the third information.
  • the second network device forwards the downlink non-SDT data of the terminal to the first network device according to the third address information.
  • the second network device after receiving the third address information sent by the first network device, the second network device sends downlink non-SDT data of the terminal to the first network device according to the third address information.
  • the method of this embodiment further includes: after the second network device receives the complete context information or remaining context information of the terminal, initiating transfer of the anchor point network device of the terminal from the second network device to the first network device.
  • the above-mentioned third information is also used to implicitly indicate the anchor network device that needs to transfer the terminal.
  • the second network device determines that there is downlink non-SDT data that needs to be forwarded, thereby determining that the anchor network device of the terminal needs to be transferred, and then the second network device initiates to transfer the anchor network device of the terminal Transferred from the second network device to the first network device.
  • the above-mentioned complete context information or remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal.
  • the second network device determines the anchor network device that needs to transfer the terminal according to the received complete context information or the remaining context information, and then the second network device initiates the transfer of the anchor network device of the terminal from the second network device to The first network device.
  • the first network device further sends fourth information to the second network device, where the fourth information is used to display the anchor network device indicating that the terminal needs to be transferred.
  • the second network device determines the anchor network device that needs to transfer the terminal according to the fourth information, and then the second network device initiates the transfer of the anchor network device of the terminal from the second network device to the first network device.
  • the fourth information is included in the same message as the complete context information or the remaining context information, and is sent by the second network device to the first network device.
  • the second network device initiating the transfer of the anchor point network device of the terminal from the second network device to the first network device may include the following:
  • the second network device sends an RRC recovery message to the terminal.
  • the terminal sends an RRC resume complete message (RRC Resume Complete message) to the second network device.
  • RRC Resume Complete message RRC Resume Complete message
  • the second network device after performing the foregoing S406, sends the foregoing downlink non-SDT data to the terminal.
  • the second network device sends a path switch request message (Path switch Request message) to the core network.
  • the core network sends a path switch request acknowledgment message (Path switch Request ACK message) to the second network device.
  • the core network may send downlink data to the terminal through the second network device.
  • the terminal may also send uplink data to the core network through the second network device.
  • the first network device sends a context release command message (UE Context Release Command message) of the terminal to the second network device.
  • UE Context Release Command message UE Context Release Command message
  • the second network device After receiving the context release command message of the terminal sent by the first network device, the second network device releases the context information of the terminal to complete the transfer of the anchor point network device of the terminal from the second network device to the first network device.
  • the method of this embodiment may further include S410:
  • the second network device sends an RRC release message to the terminal.
  • the second network device after the second network device sends part of the context information of the terminal to the first network device, if during the SDT data transmission process of the terminal, the second network device receives the terminal from the core network the downlink non-SDT data, the second network device decides to transfer the anchor point network device of the terminal, and sends the complete context information or remaining context information of the terminal to the first network device, and can also display or implicitly indicate to the first network device that the transfer is required.
  • An anchor network device of the terminal so that the terminal receives downlink non-SDT data from the core network through the second network device. Therefore, the concurrent process of downlink non-SDT data in the SDT transmission process of the terminal can also be flexibly supported.
  • FIG. 5 is a flowchart of a data transmission control method provided by another embodiment of the present application. As shown in FIG. 5 , the method of this embodiment executes S301- After S311, it can also include:
  • the terminal sends an RRC recovery request message to a first network device.
  • the first network device receives the RRC recovery request message sent by the terminal.
  • the terminal sends fifth information to the first network device, and the fifth information is used to indicate that the terminal needs to send The uplink non-SDT data or indicates that the terminal needs to perform non-SDT.
  • the fifth information may include an RRC recovery request message or a buffer status report (Buffer Status Report, BSR) request message sent by the terminal to the first network device, and the RRC recovery request message is shown as an example in FIG. 5 .
  • the first network device sends a request message for obtaining the context of the terminal to the second network device.
  • the second network device receives a context acquisition request message of the terminal sent by the first network device.
  • the second network device receives the RRC recovery request message, and according to the fifth information in the RRC recovery request message, sends the terminal's acquisition context request message to the first network device.
  • the difference between the context acquisition request message of the terminal in S502 and the context acquisition request message of the terminal in S302 is that the context acquisition request message in S502 does not include the above-mentioned first information.
  • the second network device sends a context acquisition response message (retrieve UE context response message) of the terminal to the first network device.
  • the first network device receives the terminal's acquire context response message sent by the second network device.
  • the second network device after the second network device receives a context acquisition request message from a terminal that does not carry the first information, the second network device sends a context acquisition response message to the first network device, where the context acquisition response message includes the complete context of the terminal. contextual information.
  • the first network device after receiving the context acquisition response message sent by the second network device, the first network device initiates to transfer the anchor point network device of the terminal from the second network device to the first network device according to the context acquisition response message.
  • the second network device initiating the transfer of the anchor point network device of the terminal from the second network device to the first network device may include the following:
  • the second network device sends an RRC recovery message to the terminal.
  • the terminal sends an RRC recovery complete message to the second network device.
  • the second network device sends a path switching request message to the core network.
  • the core network sends a path switching request confirmation message to the second network device.
  • the core network may send downlink data to the terminal through the second network device.
  • the terminal may also send uplink data to the core network through the second network device.
  • the second network device receives the uplink data sent by the terminal, and then executes the above S506 and S507, and then the second network device forwards the terminal's uplink data to the core network.
  • the first network device sends a context release command message of the terminal to the second network device.
  • the method of this embodiment may further include S509:
  • the second network device sends an RRC release message to the terminal.
  • the first network device receives an uplink non-SDT from the terminal data, and then request the context information of the terminal from the first network device, and then transfer the anchor network device of the terminal, so that the terminal can transmit uplink non-SDT data to the core network through the second network device. Therefore, the concurrent process of uplink non-SDT data in the SDT transmission process of the terminal can also be flexibly supported.
  • an embodiment of the present application provides a data transmission control apparatus.
  • the data transmission control apparatus of this embodiment may be a first network device, and the data transmission control apparatus includes: a transceiver 601, a processor 602 and memory 603.
  • the transceiver 601 is used to receive and transmit data under the control of the processor 602 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by processor 602 and various circuits of memory represented by memory 603 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 601 may be multiple elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 602 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 602 in performing operations.
  • the processor 602 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (Complex). Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • Complex complex programmable logic device
  • Programmable Logic Device, CPLD Programmable Logic Device
  • the processor can also adopt a multi-core architecture.
  • the processor 602 invokes the computer program stored in the memory 603 to execute any one of the methods related to the first network device provided by the embodiments of the present application according to the obtained executable instructions.
  • the processor and memory may also be physically separated.
  • processor 602 is configured to perform the following operations:
  • the first information is used to indicate that the terminal in the inactive state needs to perform SDT
  • the first network device is the network device currently accessed by the terminal in the inactive state
  • the second network device It is the anchor network device of the terminal, and the anchor network device is the network device that provides services for the terminal when the terminal enters the inactive state
  • Receive part of the context information of the terminal sent by the second network device where the part of the context information is used by the first network device to send the uplink SDT data of the terminal to the second network device and/or send the downlink SDT data of the terminal to the terminal.
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • sending the first information to the second network device includes:
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • receive part of the context information of the terminal sent by the second network device including:
  • a context acquisition request failure message of the terminal sent by the second network device is received, and the context acquisition context request failure message includes part of the context information of the terminal.
  • processor 602 is further configured to perform the following operations:
  • Receive part of the context information of the terminal sent by the second network device including:
  • a newly added message sent by the second network device is received, where the newly added message includes part of the context information of the terminal.
  • processor 602 is further configured to perform the following operations:
  • processor 602 is further configured to perform the following operations:
  • the device After sending the first information to the second network device, after receiving part of the context information of the terminal sent by the second network device, send second address information to the second network device, where the second address information is used by the second network device to send to the first network
  • the device forwards the downlink SDT data of the terminal.
  • processor 602 is further configured to perform the following operations:
  • processor 602 is further configured to perform the following operations:
  • processor 602 is further configured to perform the following operations:
  • the third address information is sent to the second network device.
  • the third information is also used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the processor 602 is further configured to perform the following operations:
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the processor 602 is further configured to perform the following operations:
  • processor 602 is further configured to perform the following operations:
  • the fourth information After receiving the complete context information or removing the remaining context information, according to the fourth information, initiate the transfer of the anchor point network device of the terminal from the second network device to the first network device.
  • processor 602 is further configured to perform the following operations:
  • the fifth information send a request message for obtaining the context of the terminal to the first network device
  • the complete context information of the terminal sent by the first network device is received.
  • receive fifth information sent by the terminal including:
  • an embodiment of the present application further provides a data transmission control apparatus.
  • the data transmission control apparatus of this embodiment may be a second network device, and the data transmission control apparatus includes: a transceiver 701, a processing 702 and memory 703.
  • the transceiver 701 is used to receive and transmit data under the control of the processor 702 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by processor 702 and various circuits of memory represented by memory 703 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 701 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 702 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 702 in performing operations.
  • the processor 702 may be a CPU, an ASIC, an FPGA or a CPLD, and the processor may also adopt a multi-core architecture.
  • the processor 702 invokes the computer program stored in the memory 703 to execute any method related to the second network device provided by the embodiments of the present application according to the obtained executable instructions.
  • the processor and memory may also be physically separated.
  • processor 702 is configured to perform the following operations:
  • the device is the anchor network device of the terminal, and the anchor network device is the network device that provides services for the terminal when the terminal enters the inactive state;
  • part of the context information of the terminal is sent to the first network device, and the part of the context information is used for the first network device to send the terminal's uplink SDT data to the second network device and/or send the terminal's downlink SDT data to the terminal.
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • receiving the first information sent by the first network device includes:
  • a context acquisition request message of the terminal sent by the first network device is received, and the context information message includes the first information.
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • send part of the context information of the terminal to the first network device including:
  • a context acquisition request failure message is sent to the first network device, and the context acquisition context request failure message includes part of the context information of the terminal.
  • processor 702 is further configured to perform the following operations:
  • the first information before sending the partial context information of the terminal to the first network device, send a context acquisition request failure message to the first network device according to the first information;
  • part of the context information of the terminal is sent to the first network device, including:
  • a new message is sent to the first network device, where the new message includes part of the context information of the terminal.
  • processor 702 is further configured to perform the following operations:
  • the core network After sending the partial context information of the terminal to the first network device, receive the uplink SDT data of the terminal sent by the second network device according to the partial context information, and send the data to the terminal according to the remaining context information except the partial context information in the complete partial context information of the terminal.
  • the core network sends upstream SDT data; and/or,
  • processor 702 is further configured to perform the following operations:
  • the first network device After receiving the first information sent by the first network device, send first address information to the first network device, where the first address information is used by the first network device to forward the uplink SDT of the terminal to the second network device; and/or,
  • the second address information is used by the second network device to send the first information to the first network device.
  • the network device forwards the downlink SDT data of the terminal.
  • processor 702 is further configured to perform the following operations:
  • the first information after sending part of the context information of the terminal to the first network device, receive downlink non-SDT data of the terminal from the core network;
  • the complete context information of the terminal or the remaining context information of the terminal except the partial context information is sent to the first network device.
  • processor 702 is further configured to perform the following operations:
  • the first network device After sending the complete context information or the remaining context information to the first network device, receive the third address information sent by the first network device, where the third address information is used by the second network device to forward the downlink non-SDT data of the terminal to the first network device ;
  • the downlink non-SDT data of the terminal is forwarded to the first network device.
  • processor 702 is further configured to perform the following operations:
  • the third information is also used to implicitly indicate the anchor network device to which the terminal needs to be transferred.
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal.
  • the processor 702 is further configured to perform the following operations: after receiving the downlink non-SDT data from the terminal of the core network, send fourth information to the first network device, where the fourth information is used to display the anchor indicating that the terminal needs to be transferred Click Network Devices.
  • the processor 702 is further configured to perform the following operations: after sending part of the context information of the terminal to the first network device according to the first information, receive a context acquisition request message of the terminal sent by the first network device;
  • the complete context information of the terminal or the remaining context information of the terminal except the partial context information is sent to the first network device.
  • an embodiment of the present application further provides a data transmission control apparatus.
  • the data transmission control apparatus of this embodiment may be a first network device, and the data transmission control apparatus includes: a sending unit 801 and a receiving unit unit 802.
  • the sending unit 801 is configured to send first information to the second network device, where the first information is used to indicate that the terminal in the inactive state needs to perform SDT, wherein the first network device is the network currently accessed by the terminal in the inactive state equipment, the second network equipment is the anchor point network equipment of the terminal, and the anchor point network equipment is the network equipment that provides services for the terminal when the terminal enters the inactive state;
  • a receiving unit 802 configured to receive part of the context information of the terminal sent by the second network device, where the part of the context information is used by the first network device to send the uplink SDT data of the terminal to the second network device and/or send the downlink SDT data of the terminal to the terminal .
  • the partial context information includes the RLC configuration of the bearer of at least one SDT.
  • sending the first information to the second network device includes:
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • receive part of the context information of the terminal sent by the second network device including:
  • a context acquisition request failure message of the terminal sent by the second network device is received, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the receiving unit 802 is further configured to receive, before receiving part of the context information of the terminal sent by the second network device, a failure message for obtaining a context request of the terminal sent by the second network device;
  • Receive part of the context information of the terminal sent by the second network device including:
  • a newly added message sent by the second network device is received, where the newly added message includes part of the context information of the terminal.
  • the receiving unit 802 is further configured to receive the uplink SDT data sent by the terminal after receiving part of the context information of the terminal sent by the second network device, and/or receive the downlink SDT data of the terminal sent by the second network device
  • the sending unit 801 is further configured to send the uplink SDT data to the second network device according to the partial context information; and/or send the downlink SDT data to the terminal according to the partial context information.
  • the receiving unit 802 is further configured to receive the first address information sent by the second network device after the sending unit 801 sends the first information to the second network device, where the first address information is used by the first network device to send the first information to the second network device. 2.
  • the network equipment forwards the upstream SDT data of the terminal; and/or,
  • the sending unit 801 is further configured to send second address information to the second network device after the receiving unit 802 receives part of the context information of the terminal sent by the second network device, where the second address information is used by the second network device to send to the first network The device forwards the downlink SDT data of the terminal.
  • the receiving unit 802 is further configured to receive, after receiving the partial context information of the terminal sent by the second network device, the complete information of the terminal sent by the second network device after receiving the downlink non-SDT data from the terminal of the core network. Context information or the remaining context information of the terminal except for part of the context information.
  • the sending unit 801 is further configured to send third address information to the second network device after the receiving unit 802 receives the complete context information or the remaining context information, where the third address information is used by the second network device to send to the first network device.
  • the device forwards the downlink non-SDT data of the terminal;
  • the receiving unit 802 is further configured to receive the downlink non-SDT data of the terminal forwarded by the second network device according to the third address information.
  • the receiving unit 802 is further configured to receive third information sent by the second network device before the sending unit 801 sends the third address information to the second network device, where the third information is used to indicate the downlink non-SDT data of the terminal. need to be forwarded;
  • the sending unit 801 is further configured to send third address information to the second network device according to the third information.
  • the apparatus in this embodiment further includes a processing unit 803 .
  • the third information is also used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the processing unit 803 is configured to initiate the transfer of the anchor network device of the terminal from the second network device to the first network device according to the third information after the receiving unit 802 receives the complete context information or the remaining context information.
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal;
  • the processing unit 803 is configured to initiate the transfer of the anchor network device of the terminal from the second network device to the first network device after the receiving unit 802 receives the complete context information or the remaining context information.
  • the receiving unit 802 is further configured to receive fourth information sent by the second network device, where the fourth information is used to display the anchor network device indicating that the terminal needs to be transferred;
  • the processing unit 803 is configured to initiate the transfer of the anchor point network device of the terminal from the second network device to the first network device according to the third information after the receiving unit 802 receives the complete context information or the remaining context information.
  • the receiving unit 802 is further configured to receive fifth information sent by the terminal after receiving part of the context information of the terminal sent by the second network device, where the fifth information is used to indicate that the terminal needs to send uplink non-SDT data;
  • the sending unit 801 is further configured to send a request message for obtaining the context of the terminal to the first network device according to the fifth information;
  • the receiving unit 802 is further configured to receive complete context information of the terminal sent by the first network device.
  • receive fifth information sent by the terminal including:
  • an embodiment of the present application further provides a data transmission control apparatus.
  • the data transmission control apparatus of this embodiment may be a second network device, and the data transmission control includes: a receiving unit 901 and a sending unit 902.
  • the receiving unit 901 is configured to receive first information sent by a first network device, where the first information is used to indicate that the terminal in the inactive state needs to perform SDT, wherein the first network device is the terminal currently accessing the inactive state.
  • network equipment, the second network equipment is the anchor point network equipment of the terminal, and the anchor point network equipment is the network equipment that provides services for the terminal when the terminal enters the inactive state;
  • a sending unit 902 configured to send part of the context information of the terminal to the first network device according to the first information, where the part of the context information is used by the first network device to send the uplink SDT data of the terminal to the second network device and/or to send the terminal to the terminal downlink SDT data.
  • the partial context information includes the bearer RLC configuration of at least one SDT.
  • receiving the first information sent by the first network device includes:
  • a context acquisition request message of the terminal sent by the first network device is received, and the context information message includes the first information.
  • the reason why the first information is used to indicate that the context information of the terminal is requested is that the terminal needs to perform SDT.
  • send part of the context information of the terminal to the first network device including:
  • a context acquisition request failure message is sent to the first network device, and the context acquisition context request failure message includes part of the context information of the terminal.
  • the sending unit 902 is further configured to send a context acquisition request failure message to the first network device according to the first information before sending the partial context information of the terminal to the first network device according to the first information;
  • part of the context information of the terminal is sent to the first network device, including:
  • a new message is sent to the first network device, where the new message includes part of the context information of the terminal.
  • the receiving unit 901 is further configured to: after the sending unit 902 sends the partial context information of the terminal to the first network device, receive the uplink SDT data of the terminal sent by the second network device according to the partial context information, and/or, Receive downlink SDT data from the terminal of the core network;
  • the sending unit 902 is further configured to send uplink SDT data to the core network according to the remaining context information except the partial context information in the complete partial context information of the terminal, and/or send the uplink SDT data to the first network device according to the remaining context information of the terminal Downstream SDT data.
  • the sending unit 902 is further configured to:
  • the receiving unit 901 After receiving the first information sent by the first network device, the receiving unit 901 sends first address information to the first network device, where the first address information is used by the first network device to forward the uplink SDT of the terminal to the second network device; and /or,
  • the receiving unit 901 is further configured to receive second address information sent by the first network device after the sending unit 902 sends part of the context information of the terminal to the second network device, where the second address information is used by the second network device to send the first network device The device forwards the downlink SDT data of the terminal.
  • the receiving unit 901 is further configured to receive downlink non-SDT data from the terminal of the core network after sending part of the context information of the terminal to the first network device according to the first information;
  • the sending unit 902 is further configured to send the complete context information of the terminal or the remaining context information of the terminal except the partial context information to the first network device.
  • the receiving unit 901 is further configured to receive the third address information sent by the first network device after the sending unit 902 sends the complete context information or the remaining context information to the first network device, where the third address information is used for the second network device.
  • the network device forwards the downlink non-SDT data of the terminal to the first network device;
  • the sending unit 902 is further configured to forward the downlink non-SDT data of the terminal to the first network device according to the third address information.
  • the sending unit 902 is further configured to send third information to the first network device before the receiving unit 901 receives the third address information sent by the first network device, where the third information is used to indicate the downlink non-SDT data of the terminal. Forwarding is required.
  • the third information is also used to implicitly indicate the anchor network device to which the terminal needs to be transferred.
  • the complete context information or the remaining context information is used to implicitly indicate the anchor network device that needs to transfer the terminal.
  • the sending unit 902 is further configured to send fourth information to the first network device after the receiving unit 901 receives the downlink non-SDT data from the terminal of the core network, where the fourth information is used to display the anchor indicating that the terminal needs to be transferred.
  • Click Network Devices are further configured to send fourth information to the first network device after the receiving unit 901 receives the downlink non-SDT data from the terminal of the core network, where the fourth information is used to display the anchor indicating that the terminal needs to be transferred.
  • the receiving unit 901 is further configured to, after the sending unit 902 sends part of the context information of the terminal to the first network device according to the first information, receive a context acquisition request message of the terminal sent by the first network device;
  • the sending unit 902 is further configured to send the complete context information of the terminal or the remaining context information of the terminal except the partial context information to the first network device.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • the embodiments of the present application provide a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to perform any operation related to the first network device provided by the embodiments of the present application. a described method.
  • the processor can implement all the method steps implemented by the first network device in the above method embodiments, and can achieve the same technical effects, and the same parts and beneficial effects in this embodiment as those in the method embodiments will not be described in detail here. .
  • an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the procedure provided by the embodiment of the present application related to the second network device.
  • the processor can implement all the method steps implemented by the second network device in the above method embodiments, and can achieve the same technical effects, and the same parts and beneficial effects in this embodiment as those in the method embodiments will not be described in detail here. .
  • an embodiment of the present application provides a computer program product, including a computer program.
  • the computer program When the computer program is executed by a processor, it implements all the method steps implemented by the first network device in the above method embodiments, and can achieve the same technology Therefore, the same parts and beneficial effects in this embodiment as those in the method embodiment will not be described in detail here.
  • an embodiment of the present application provides a computer program product, including a computer program.
  • the computer program When the computer program is executed by a processor, it implements all the method steps implemented by the second network device in the above method embodiments, and can achieve the same technology Therefore, the same parts and beneficial effects in this embodiment as those in the method embodiment will not be described in detail here.
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state disk (SSD)
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

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Abstract

La présente demande concerne un procédé et un appareil de contrôle de transmission de données. Le procédé comprend les étapes suivantes : un premier dispositif de réseau envoie à un second dispositif de réseau des premières informations pour indiquer qu'un terminal dans un état inactif doit effectuer une SDT, et reçoit ensuite des informations de contexte partielles du terminal envoyées par le second dispositif de réseau, au lieu d'informations de contexte complètes du terminal. Certaines informations de contexte du terminal que le premier dispositif de réseau n'a pas besoin d'utiliser ne sont pas envoyées au premier dispositif de réseau, le surdébit de signalisation est réduit, le premier dispositif de réseau est assuré de pouvoir traiter des données SDT du terminal, et le processus SDT du terminal peut être plus simple; de plus, pour un scénario dans lequel le terminal dans l'état inactif accède à des dispositifs de réseau autres qu'un dispositif de réseau d'ancrage, une solution associée est fournie lorsque le terminal a besoin d'effectuer une SDT.
PCT/CN2022/071138 2021-01-14 2022-01-10 Procédé et appareil de contrôle de transmission de données WO2022152092A1 (fr)

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CN117796136A (zh) * 2022-07-25 2024-03-29 北京小米移动软件有限公司 数据传输方法和装置

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CN108029149A (zh) * 2015-09-30 2018-05-11 苹果公司 具有减少的信令开销的rrc状态转变技术
WO2020139509A1 (fr) * 2018-12-27 2020-07-02 Apple Inc. Protection d'intégrité pour transmission fréquente de petites données
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WO2020189958A1 (fr) * 2019-03-15 2020-09-24 Lg Electronics Inc. Transmission de petites données sans procédure de commutation de chemin
WO2020254246A1 (fr) * 2019-06-17 2020-12-24 Sony Corporation Configuration de transmission précoce de données de charge utile de liaison descendante

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CN107743716A (zh) * 2015-06-19 2018-02-27 高通股份有限公司 无线通信系统中的小数据传输
CN108029149A (zh) * 2015-09-30 2018-05-11 苹果公司 具有减少的信令开销的rrc状态转变技术
WO2020139509A1 (fr) * 2018-12-27 2020-07-02 Apple Inc. Protection d'intégrité pour transmission fréquente de petites données
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WO2020254246A1 (fr) * 2019-06-17 2020-12-24 Sony Corporation Configuration de transmission précoce de données de charge utile de liaison descendante

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