WO2022134960A1 - 通信方法、装置及设备 - Google Patents

通信方法、装置及设备 Download PDF

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Publication number
WO2022134960A1
WO2022134960A1 PCT/CN2021/131328 CN2021131328W WO2022134960A1 WO 2022134960 A1 WO2022134960 A1 WO 2022134960A1 CN 2021131328 W CN2021131328 W CN 2021131328W WO 2022134960 A1 WO2022134960 A1 WO 2022134960A1
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WO
WIPO (PCT)
Prior art keywords
data
base station
terminal device
rlc layer
secondary base
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Application number
PCT/CN2021/131328
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English (en)
French (fr)
Inventor
夏少华
石峰
Original Assignee
展讯通信（上海）有限公司
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Publication of WO2022134960A1 publication Critical patent/WO2022134960A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method, apparatus, and device.
  • a terminal device can be connected to a long term evolution (long term evolution, LTE) base station and a new radio (new radio, NR) base station at the same time.
  • LTE long term evolution
  • NR new radio
  • the LTE base station may be the primary base station
  • the NR base station may be the secondary base station.
  • the terminal equipment when the communication between the terminal equipment and the secondary base station is abnormal, the terminal equipment continues to generate new data and send new data to the primary base station, so that the primary base station sends the new data to the receiving end (other terminal equipment).
  • the data if the terminal device has data that has not been successfully sent to the secondary base station, the receiving end cannot receive continuous data, so that the receiving end fails to receive data, which in turn leads to poor communication reliability.
  • the present application provides a communication method, apparatus and device. Thus, data loss is avoided and the reliability of communication is improved.
  • an embodiment of the present application provides a communication method, which is applied to a terminal device, where the terminal device is connected to a primary base station and a secondary base station respectively, and the method includes:
  • the terminal device determines that the communication between the terminal device and the secondary base station is abnormal
  • the terminal device sends the first data to the master base station, so that the master base station processes the first data.
  • the terminal device determines that the first data that has not been successfully sent to the secondary base station includes:
  • the terminal device determines, according to the type of the DRB, the first data that has not been successfully sent to the secondary base station, where the type of the DRB is an unacknowledged mode or an acknowledged mode.
  • the type of the DRB is an unacknowledged mode
  • the terminal device determines, according to the type of the DRB, the first data that has not been successfully sent to the secondary base station, including:
  • the terminal device determines the data that has been generated but not sent to the secondary base station as the first data.
  • the terminal device includes a secondary cell group SCG radio link control RLC layer; the terminal device determines data that has been generated but not sent to the secondary base station as the first data ,include:
  • the terminal device determines the data that has been submitted to the SCG RLC layer and is not sent through the SCG RLC layer as the first data; wherein the terminal device is used to send the data to the SCG RLC layer through the SCG RLC layer.
  • the secondary base station sends data.
  • the type of the DRB is an acknowledgement mode
  • the terminal device determines, according to the type of the DRB, the first data that has not been successfully sent to the secondary base station, including:
  • the terminal device determines, as the first data, data that has been generated but has not been sent to the secondary base station, and data that has been sent to the secondary base station but has not received an acknowledgment response.
  • the terminal device includes an SCG RLC layer; the terminal device sends the data that has been generated but not sent to the secondary base station, and the data sent to the secondary base station but has not received an acknowledgment response.
  • the data is determined as the first data, including:
  • the terminal device determines the data that has been submitted to the SCG RLC layer but is not sent through the SCG RLC layer, and the data that is sent to the secondary base station through the SCG RLC layer and has not received an acknowledgment response as the first data.
  • the method further includes:
  • the terminal device deletes the first data at the SCG RLC layer.
  • the first data includes multiple Packet Data Convergence Protocol (PDCP) protocol data unit PDUs; the terminal device sends the first data to the primary base station, including:
  • PDCP Packet Data Convergence Protocol
  • the terminal device determines a sending order among the multiple PDCP PDUs, and the sending order is the same as the order in which the multiple PDCP PDUs are submitted to the SCG RLC layer of the terminal device;
  • the terminal device sends the multiple PDCP PDUs to the primary base station according to the sending sequence.
  • the terminal device includes a primary cell group MCG RLC layer; the terminal device sends first data to the primary base station, including:
  • the terminal device submits the first data to the MCG RLC layer
  • the terminal device sends the first data to the primary base station through the MCG RLC layer.
  • the method before the terminal device sends the first data to the primary base station, the method further includes:
  • the terminal device suspends sending other data except the first data to the primary base station.
  • an embodiment of the present application provides a communication apparatus, which is applied to terminal equipment, where the terminal equipment is connected to a primary base station and a secondary base station respectively, and the apparatus includes: a processing module and a sending module, wherein,
  • the processing module is configured to determine that the communication between the terminal device and the secondary base station is abnormal
  • the processing module is further configured to determine the first data that has not been successfully sent to the secondary base station;
  • the sending module is configured to send the first data to the master base station, so that the master base station can process the first data.
  • the processing module is specifically used for:
  • the first data that has not been successfully sent to the secondary base station is determined according to the type of the DRB, and the type of the DRB is an unacknowledged mode or an acknowledged mode.
  • the type of the DRB is an unacknowledged mode; the processing module is specifically used for:
  • Data that has been generated but not sent to the secondary base station is determined as the first data.
  • the terminal device includes a secondary cell group SCG radio link control RLC layer; the processing module is specifically configured to:
  • the type of the DRB is an acknowledgement mode; the processing module is specifically used for:
  • the data that has been generated but has not been sent to the secondary base station and the data that has been sent to the secondary base station and have not received an acknowledgment response are determined as the first data.
  • the terminal device includes an SCG RLC layer; the processing module is specifically used for:
  • the data that has been submitted to the SCG RLC layer but has not been sent through the SCG RLC layer, and the data that has been sent to the secondary base station through the SCG RLC layer and have not received an acknowledgment response are determined as the first data.
  • the processing module is further used for:
  • the first data is deleted at the SCG RLC layer.
  • the first data includes multiple Packet Data Convergence Protocol (PDCP) protocol data units (PDUs);
  • PDCP Packet Data Convergence Protocol
  • PDUs protocol data units
  • the processing module is further configured to determine a sending order among the multiple PDCP PDUs, where the sending order is the same as the order in which the multiple PDCP PDUs are submitted to the SCG RLC layer of the terminal device;
  • the sending module is specifically configured to send the multiple PDCP PDUs to the primary base station according to the sending sequence.
  • the terminal equipment includes a primary cell group MCG RLC layer
  • the processing module is further configured to submit the first data to the MCG RLC layer;
  • the sending module is specifically configured to send the first data to the primary base station through the MCG RLC layer.
  • the sending module is further configured to suspend sending other data except the first data to the master base station before the sending module sends the first data to the master base station.
  • an embodiment of the present application provides a terminal device, including: a processor and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the first aspects.
  • embodiments of the present application provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any one of the first aspect The communication method described in item.
  • an embodiment of the present application provides a computer program product, including a computer program, which implements the communication method described in any one of the first aspect when the computer program is executed by a processor.
  • the terminal device is connected to the primary base station and the secondary base station respectively.
  • the terminal device may first determine that the transmission to the secondary base station is unsuccessful. and send the part of the data to the main base station, so that the main base station can process the part of the data, thereby avoiding data loss and improving the reliability of communication.
  • Fig. 1 is a system architecture diagram provided by this application.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a communication process provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 1 is a system architecture diagram provided by this application, please refer to FIG. 1 , including a terminal device 101 , a primary base station 102 and a secondary base station 103 .
  • the terminal device 101 can establish a connection and communicate with the primary base station 102 and the secondary base station 103 at the same time.
  • the terminal device 101 includes a packet data convergence protocol (PDCP) layer, a master cell group (master cell group, MCG) radio link control (radio link control, RLC) layer and a secondary cell group (Secondary Cell Group) layer , SCG) RLC layer.
  • PDCP packet data convergence protocol
  • MCG master cell group
  • RLC radio link control
  • SCG secondary Cell Group
  • the terminal device 101 can generate data packets to be sent through the PDCP layer.
  • the terminal device 101 can communicate with the main base station 102 through the MCG RLC layer, for example, the terminal device can send data packets to the main base station 102 through the MCG RLC layer.
  • the terminal device 101 can communicate with the secondary base station 103 through the SCG RLC layer, for example, the terminal device 101 can send a data packet to the secondary base station 103 through the MCG RLC layer.
  • the primary base station may be an LTE base station, and the secondary base station may be an NR base station.
  • the primary base station may be an NR base station, and the secondary base station may be an LTE base station.
  • a terminal device is a device with wireless transceiver functions.
  • Terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, industrial control ( Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security Wireless terminal equipment in (transportation safety), wireless terminal equipment in smart city, wireless terminal equipment in smart home (smart home), wearable terminal equipment, etc.
  • a virtual reality virtual reality
  • AR augmented reality
  • industrial control Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security Wireless terminal equipment in (transportation safety), wireless terminal equipment in smart city, wireless terminal equipment in smart home (smart home), wearable terminal equipment, etc.
  • the terminal equipment involved in the embodiments of this application may also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, and remote station , remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE proxy or UE device, etc.
  • Terminal devices can also be stationary or mobile.
  • the terminal device when the communication between the terminal device and the secondary base station is abnormal, the terminal device can trigger an SCG failure (SCG failure) process, and the terminal device will suspend (suspend) sending data packets to the secondary base station when executing this process, and restart the process.
  • SCG failure SCG failure
  • the terminal device also sends an SCG failure notification to the primary base station.
  • the failure notification can be SCG Failure Information (SCG failure information), and waits for the indication information of the primary base station.
  • the primary base station After the primary base station receives the SCG failure notification, the primary base station can Type (for example, SCG side wireless link abnormality, SCG side random access failure, SCG target cell synchronization failure), and measurement results to determine the next action, the next action may include: release the SCG, re-add the SCG, wait for the terminal equipment Report a new measurement report, etc.
  • Type for example, SCG side wireless link abnormality, SCG side random access failure, SCG target cell synchronization failure
  • the next action may include: release the SCG, re-add the SCG, wait for the terminal equipment Report a new measurement report, etc.
  • the terminal device may continue to generate new data (for example, a protocol data unit (PDU)) through the PDCP layer, and send the new data to the primary base station through the MCG RLC data, so that the main base station sends the new data to the receiver.
  • new data for example, a protocol data unit (PDU)
  • PDU protocol data unit
  • the terminal device may have generated data to be sent to the secondary base station through the PDCP layer, and the data is not successfully sent to the secondary base station, so that the secondary base station cannot The data is successfully sent to the receiver, resulting in data loss, so that the data received by the receiver is discontinuous, which in turn affects the upper-layer application of the terminal device.
  • PDU protocol data unit
  • the terminal device may first determine the data that has not been successfully sent to the secondary base station, and send the part of the data to the primary base station , so that the main base station can process this part of data, thereby avoiding data loss and improving the reliability of communication.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application. Referring to Figure 2, the method can include:
  • the terminal device determines that the communication between the terminal device and the secondary base station is abnormal.
  • the terminal device determines that the communication with the secondary base station is abnormal: the wireless link on the SCG side is abnormal, the random access on the SCG side fails, and the SCG target cell synchronization fails.
  • the terminal device determines the first data that has not been successfully sent to the secondary base station.
  • the terminal device may determine the first data in the following manner: the terminal device determines a data radio bearer (DRB) between the terminal device and the secondary base station, and according to the type of the DRB, determines the first data that has not been successfully sent to the secondary base station , the type of DRB is unacknowledged mode (UM) or acknowledged mode (AM).
  • DRB data radio bearer
  • the base station When the type of DRB is the unacknowledged mode, after the terminal device sends data to the base station (primary base station or secondary base station) through the DRB, the base station does not send a response to the terminal device.
  • the base station When the type of DRB is an unacknowledged mode, after the terminal device sends data to the base station (primary base station or secondary base station) through the DRB, the base station sends a response to the terminal device. For example, if the base station successfully receives the data sent by the terminal device, the base station sends an acknowledgement response (ACK) to the terminal device, and if the base station fails to receive the data sent by the terminal device, the base station sends a non-acknowledgement response (NACK) to the terminal device.
  • ACK acknowledgement response
  • NACK non-acknowledgement response
  • the process for the terminal device to determine the first data that has not been successfully sent to the secondary base station is also different, which may include the following two cases:
  • the terminal device may determine the data that has been generated but not sent to the secondary base station as the first data. That is, the first data includes: data that has been generated by the terminal device but has not been sent to the secondary base station.
  • the terminal device can send data to the secondary base station in the following ways.
  • the terminal device generates data through the PDCP layer and submits the data generated by the PDCP layer to the SCG RLC layer, and then the terminal device sends data to the secondary base station through the SCG RLC layer.
  • the SCG RLC layer can set a sending queue. After the terminal device submits the data generated by the PDCP layer to the SCG RLC layer, it stores the data in the sending queue of the SCG RLC layer according to the data generation sequence. The terminal device then sends the data in the queue according to the data.
  • the storage sequence of the data is sent to the secondary base station through the SCG RLC layer. Since the type of DRB is an unacknowledged mode, after the terminal device sends the first data to the secondary base station through the SCG RLC layer, the terminal device will not receive the response message sent by the secondary base station.
  • the data that the terminal device has generated and sent to the secondary base station refers to the data that the terminal device has submitted to the SCG RLC layer and has not been sent through the SCG RLC layer. Therefore, the terminal device can determine the data that has been submitted to the SCG RLC layer and has not been sent through the SCG RLC layer as the first data.
  • the type of DRB is confirmation mode.
  • the terminal device may determine the data that has been generated but not sent to the secondary base station, and the data that has been sent to the secondary base station but has not received an acknowledgment response as the first data. That is, the first data includes: data generated by the terminal device but not sent to the secondary base station, and data sent to the secondary base station but not received an acknowledgment response.
  • the terminal device sends data to the secondary base station. Since the type of DRB is the confirmation mode, after the terminal equipment sends data to the secondary base station through the SCG RLC layer, the secondary base station sends a response to the terminal equipment. If the secondary base station successfully receives the data from the terminal equipment, the secondary base station sends the data to the terminal equipment. The device sends an acknowledgement response (ACK); if the secondary base station fails to receive data from the terminal device, the secondary base station sends a non-acknowledgement response (NACK) to the terminal device.
  • ACK acknowledgement response
  • NACK non-acknowledgement response
  • the data generated by the terminal device but not sent to the secondary base station is the data that the terminal device will submit to the SCG RLC layer and not sent through the SCG RLC layer, and the terminal device sends to the secondary base station and does not receive an acknowledgment response
  • the data is the data that the terminal device sends to the secondary base station through the SCG RLC layer and does not receive an acknowledgment response. Therefore, the terminal device can determine the data that has been submitted to the SCG RLC layer but has not been sent through the SCG RLC layer, and the data that has been sent to the secondary base station through the SCG RLC layer and has not received an acknowledgment response as the first data.
  • the terminal device sends the first data to the main base station.
  • the terminal device may send the first data to the main base station in the following manner: the terminal device submits the first data to the MCG RLC layer, and sends the first data to the main base station through the MCG RLC layer.
  • the first data may include multiple PDCP PDUs.
  • the terminal device may determine the sending sequence of the multiple PDCP PDUs, and send the multiple PDCP PDUs to the primary base station according to the sending sequence.
  • the transmission sequence between PDCP PDUs is the same as the sequence in which the multiple PDCP PDUs are submitted to the SCG RLC layer. In this way, the sending sequence of the first data can be made correct.
  • the terminal device before the terminal device sends the first data to the primary base station, if the terminal device generates new data through the PDCP layer, the terminal device temporarily does not send the new data to the primary base station to avoid errors in the data sending sequence. For example, after the terminal device generates new data through the PDCP layer, the terminal device may temporarily not submit the newly generated data to the MCG RLC layer, and after the first data is all referred to the MCG RLC layer, the terminal device then sends the newly generated data to the MCG RLC layer. Submitted to the MCG RLC layer.
  • the terminal device also deletes the first data of the SCG RLC layer mentioned above, so as to avoid the terminal device repeatedly sending the first data to the secondary base station through the SCG RLC after the communication between the terminal device and the secondary base station is normal.
  • the primary base station processes the first data.
  • the master base station may determine the receiving end, and send the first data to the receiving end.
  • the master base station When the type of DRB is the acknowledgement mode, the master base station also sends a response (ACK or NACK) to the terminal device. When the type of DRB is the unacknowledged mode, the master base station does not send a response to the terminal device.
  • the terminal device is connected to the primary base station and the secondary base station respectively, and when the terminal device determines that the communication with the secondary base station is abnormal, the terminal device can first determine the first data that has not been successfully sent to the secondary base station. , and send the part of the data to the main base station, so that the main base station can process the part of the data, thereby avoiding data loss and improving the reliability of communication.
  • FIG. 3 is a schematic flowchart of another communication method provided by an embodiment of the present application. Referring to Figure 3, the method can include:
  • the terminal device determines that the communication between the terminal device and the secondary base station is abnormal.
  • the terminal device determines the type of DRB between the terminal device and the secondary base station.
  • the terminal device may first determine that there is a DRB between the terminal device and the secondary base station, and then determine the type of the DRB, and the type of the DRB is an acknowledged mode or a non-acknowledged mode.
  • the terminal device determines, according to the type of the DRB, the first data that is successfully sent to the secondary base station.
  • the first data includes multiple PDCP PDUs.
  • the terminal device determines the sending order among multiple PDCP PDUs.
  • the terminal device may determine the storage sequence of the multiple PDCP PDUs in the SCG RLC layer as the sending sequence of the multiple PDCP PDUs.
  • a transmission queue may be set in the SCG RLC layer, and the order of PDCP PDUs in the transmission queue may be determined as the transmission order among the plurality of PDCP PDUs.
  • the terminal device submits the multiple PDCP PDUs to the MCG RLC layer according to the sending sequence.
  • the sending queue may be set in the MCG RLC, and the terminal device may store the multiple PDCP PDUs in the sending queue according to the sending sequence.
  • the terminal device After S301 and before S305, if the terminal device generates a new PDCP PDU, the terminal device temporarily does not submit the new PDCP PDU to the MCG RLC layer until the execution of S305 is completed.
  • the terminal device deletes multiple PDCP PDUs at the SCG RLC layer.
  • the terminal device can clear the PDCP PDUs in the buffer queue of the SCG RLC layer.
  • the terminal device sends the multiple PDCP PDUs to the master base station through the MCG RLC layer according to the sending sequence.
  • the primary base station processes the multiple PDCP PDUs.
  • FIG. 3 only illustrates a possible execution order, and does not limit the execution order.
  • S306 may also be executed after S307, or S306 may be executed before S305, which is not specified in this embodiment of the present application. limited.
  • the terminal equipment is connected to the primary base station and the secondary base station respectively.
  • the terminal equipment can first determine whether there is a DRB with the secondary base station.
  • the terminal device determines, according to the type of the DRB, multiple PDCP PDUs that have not been successfully sent to the secondary base station, and the sending sequence between the multiple PDCP PDUs, and submits the multiple PDCP PDUs to the MCG RLC layer according to the sending sequence, And send the multiple PDCP PDUs to the master base station through the MCG RLC layer according to the sending sequence, so that the master base station processes the multiple PDCP PDUs, thereby avoiding data loss.
  • the terminal device does not submit the new PDCP PDU to the MCG RLC layer to avoid an error in the sequence of the data packets.
  • FIG. 4 is a schematic diagram of a communication process provided by an embodiment of the present application. Referring to FIG. 4 , it includes a terminal device 401 , a secondary base station 402 and a primary base station 403 .
  • the terminal device 401 has communication connections with the secondary base station 402 and the primary base station 403, respectively.
  • the terminal device determines that the communication link with the secondary base station is abnormal, and the terminal device determines that there is a DRB between it and the secondary base station, the terminal device obtains the type of the DRB. Assuming that the type of the DRB is the unacknowledged mode, the terminal device determines in the transmission queue of the SCG RLC layer that the PDCP PDUs that have been generated by the PDCP layer and have not been sent to the secondary base station include: PDCP PDU3, PDCP PDU4, and PDCP PDU5.
  • the terminal device Assuming that the terminal device generates a new PDCP PUD6 through the PDCP layer at this time, the terminal device temporarily does not want the MCG RLC layer to submit the PDCP PDU6.
  • the terminal device first submits PDCP PDU3, PDCP PDU4, and PDCP PDU5 to the transmission queue of the MCG RLC layer, and then submits the PDCP PDU6 to the transmission queue of the MCG RLC layer, that is, the PDCP in the transmission queue of the MCG RLC layer
  • the sequence of PDUs is: PDCP PDU3, PDCP PDU4, PDCP PDU5, PDCP PDU6.
  • the terminal device After the terminal device stores the PDCP PDU3 to PDCP PDU5 in the transmission queue of the MCG RLC layer, the terminal device deletes the PDCP PDU3 to PDCP PDU5 in the transmission queue of the SCG RLC layer.
  • the terminal device sends PDCP PDU3, PDCP PDU4, PDCP PDU5, and PDCP PDU6 to the main base station in turn through the MCG RLC layer, so that the main base station sends PDCP PDU3, PDCP PDU4, PDCP PDU5, and PDCP PDU6 to the receiving end in turn. If the PDCP PDU3, PDCP PDU4, and PDCP PDU5 are received or missed, it can also avoid the wrong order of receiving and sending.
  • the terminal device deletes the PDCP PDU in the sending queue of the MCG RLC layer. For example, after the terminal device sends PDCP PDU3 to the main base station through the MCG RLC layer, the terminal device deletes PDCP PDU3 in the transmission queue of the MCG RLC layer, and will move other PDCP PDUs in the transmission queue in turn, so that PDCP PDU4 is at the head of the queue .
  • the terminal device sends a PDCP PDU to the main base station through the MCG RLC layer
  • the terminal device receives the confirmation response corresponding to the PDCP PDU
  • the terminal device sends at the MCG RLC layer.
  • the PDCP PDU is deleted from the queue. If the terminal device does not receive a PDCP PDU confirmation response within the preset time period, the terminal device can retransmit the PDCP PDU through the MCG RLC layer.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication apparatus 10 may be set in a terminal device, and the terminal device is respectively connected to the primary base station and the secondary base station.
  • the communication device 10 includes: a processing module 11 and a sending module 12, wherein,
  • the processing module 11 is configured to determine that the communication between the terminal device and the secondary base station is abnormal
  • the processing module 11 is further configured to determine the first data that has not been successfully sent to the secondary base station;
  • the sending module 12 is configured to send the first data to the master base station, so that the master base station can process the first data.
  • the communication apparatus provided in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and details are not repeated here.
  • processing module 11 is specifically used for:
  • the first data that has not been successfully sent to the secondary base station is determined according to the type of the DRB, and the type of the DRB is an unacknowledged mode or an acknowledged mode.
  • the type of the DRB described in 11 is an unacknowledged mode; the processing module is specifically used for:
  • Data that has been generated but not sent to the secondary base station is determined as the first data.
  • the terminal device includes a secondary cell group SCG radio link control RLC layer; the processing module 11 is specifically configured to:
  • the type of the DRB is an acknowledgement mode; the processing module 11 is specifically used for:
  • the data that has been generated but has not been sent to the secondary base station and the data that has been sent to the secondary base station and have not received an acknowledgment response are determined as the first data.
  • the terminal device includes an SCG RLC layer; the processing module 11 is specifically configured to:
  • the data that has been submitted to the SCG RLC layer but has not been sent through the SCG RLC layer, and the data that has been sent to the secondary base station through the SCG RLC layer and have not received an acknowledgment response are determined as the first data.
  • processing module 11 is further configured to:
  • the first data is deleted at the SCG RLC layer.
  • the first data includes multiple Packet Data Convergence Protocol (PDCP) protocol data units (PDUs);
  • PDCP Packet Data Convergence Protocol
  • PDUs protocol data units
  • the processing module 11 is further configured to determine a sending order among the multiple PDCP PDUs, and the sending order is the same as the order in which the multiple PDCP PDUs are submitted to the SCG RLC layer of the terminal device;
  • the sending module 12 is specifically configured to send the multiple PDCP PDUs to the primary base station according to the sending sequence.
  • the terminal equipment includes a primary cell group MCG RLC layer
  • the processing module 11 is further configured to submit the first data to the MCG RLC layer;
  • the sending module 12 is specifically configured to send the first data to the primary base station through the MCG RLC layer.
  • the sending module 12 is further configured to, before the sending module sends the first data to the master base station, suspend sending other data except the first data to the master base station .
  • the communication apparatus provided in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and details are not repeated here.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 20 may include: a transceiver 21 , a memory 22 , and a processor 23 .
  • the transceiver 21 may include: a transmitter and/or a receiver.
  • the transmitter may also be referred to as a transmitter, transmitter, transmit port, or transmit interface, or the like, and the receiver may be referred to as a receiver, receiver, receive port, or receive interface, or the like.
  • the transceiver 21 , the memory 22 , and the processor 23 are connected to each other through a bus 24 .
  • memory 22 for storing program instructions
  • the processor 23 is configured to execute the program instructions stored in the memory, so as to cause the terminal device 20 to execute any one of the communication methods shown above.
  • the terminal device shown in the embodiment of FIG. 6 may execute the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, which will not be repeated here.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the above communication method.
  • Embodiments of the present application may further provide a computer program product, where the computer program product can be executed by a processor, and when the computer program product is executed, the above communication method can be implemented.
  • the aforementioned program can be stored in a readable memory.
  • the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
  • the term “comprising” and its variants may mean non-limiting inclusion; the term “or” and its variants may mean “and/or”.
  • the terms “first”, “second” and the like in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
  • “plurality” means two or more.
  • “And/or”, which describes the association relationship of the associated objects means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.
  • the character “/" generally indicates that the associated objects are an "or” relationship.

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Abstract

本申请实施例提供一种通信方法、装置及设备，该方法应用于终端设备，所述终端设备分别与主基站和辅基站连接，所述方法包括：所述终端设备确定所述终端设备与所述辅基站之间通信异常；所述终端设备确定未向所述辅基站成功发送的第一数据；所述终端设备向主基站发送第一数据，以使所述主基站处理所述第一数据。提高了通信的可靠性。

Description

通信方法、装置及设备
本申请要求于2020年12月22日提交中国专利局、申请号为202011530597.2、申请名称为“通信方法、装置及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法、装置及设备。
背景技术
在非独立组网(Non-Stand alone，NSA)中，终端设备可以同时与长期演进(long term evolution，LTE)基站和新空口(new radio，NR)基站连接。LTE基站可以为主基站，NR基站可以为辅基站。
在实际应用过程中，当终端设备与辅基站之间通信异常时，终端设备继续生成新的数据，并向主基站发送新的数据，以使主基站向接收端(其它终端设备)发送该新的数据。然而，若终端设备存在未成功向辅基站发送的数据时，则导致接收端无法接收到连续的数据，使得接收端接收数据失败，进而导致通信的可靠性差。
发明内容
本申请提供一种通信方法、装置及设备。进而避免数据丢失，提高通信的可靠性。
第一方面，本申请实施例提供一种通信方法，应用于终端设备，所述终端设备分别与主基站和辅基站连接，所述方法包括：
所述终端设备确定所述终端设备与所述辅基站之间通信异常；
所述终端设备确定未向所述辅基站成功发送的第一数据；
所述终端设备向主基站发送第一数据，以使所述主基站处理所述第一数据。
在一种可能的实施方式中，所述终端设备确定未向所述辅基站成功发送的第一数据，包括：
所述终端设备确定所述终端设备与所述辅基站之间的数据无线承载DRB；
所述终端设备根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，所述DRB的类型为非确认模式或者确认模式。
在一种可能的实施方式中，所述DRB的类型为非确认模式；所述终端设备根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，包括：
所述终端设备将已生成且未向所述辅基站发送的数据确定为所述第一数据。
在一种可能的实施方式中，所述终端设备中包括辅小区组SCG无线链路控制RLC层；所述终端设备将已生成且未向所述辅基站发送的数据确定为所述第一数据，包括：
所述终端设备将已提交至所述SCG RLC层，且未通过所述SCG RLC层发送的数据确定为所述第一数据；其中，所述终端设备用于通过所述SCG RLC层向所述辅基站发送数据。
在一种可能的实施方式中，所述DRB的类型为确认模式；所述终端设备根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，包括：
所述终端设备将已生成且未向所述辅基站发送的数据、以及向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
在一种可能的实施方式中，所述终端设备中包括SCG RLC层；所述终端设备将已生成且未向所述辅基站发送的数据、以及向所述辅基站发送且未收到确认响应的数据确定为所述第一数据，包括：
所述终端设备将已提交至所述SCG RLC层且未通过SCG RLC层发送的数据、以及通过所述SCG RLC层向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
在一种可能的实施方式中，所述方法还包括：
所述终端设备在所述SCG RLC层删除所述第一数据。
在一种可能的实施方式中，所述第一数据包括多个分组数据汇聚协议PDCP协议数据单元PDU；所述终端设备向主基站发送第一数据，包括：
所述终端设备确定所述多个PDCP PDU之间的发送顺序，所述发送顺序与所述多个PDCP PDU提交至所述终端设备的SCG RLC层的顺序相同；
所述终端设备按照所述发送顺序，向所述主基站发送所述多个PDCP PDU。
在一种可能的实施方式中，所述终端设备中包括主小区组MCG RLC层；所述终端设备向主基站发送第一数据，包括：
所述终端设备向所述MCG RLC层提交所述第一数据；
所述终端设备通过所述MCG RLC层向所述主基站发送所述第一数据。
在一种可能的实施方式中，所述终端设备向主基站发送第一数据之前，还包括：
所述终端设备暂停向所述主基站发送除所述第一数据之外的其它数据。
第二方面，本申请实施例提供一种通信装置，应用于终端设备，所述终端设备分别与主基站和辅基站连接，所述装置包括：处理模块和发送模块，其中，
所述处理模块用于，确定所述终端设备与所述辅基站之间通信异常；
所述处理模块还用于，确定未向所述辅基站成功发送的第一数据；
所述发送模块用于，向主基站发送第一数据，以使所述主基站处理所述第一数据。
在一种可能的实施方式中，所述处理模块具体用于：
确定所述终端设备与所述辅基站之间的数据无线承载DRB；
根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，所述DRB的类型为非确认模式或者确认模式。
在一种可能的实施方式中，所述DRB的类型为非确认模式；所述处理模块具体用于：
将已生成且未向所述辅基站发送的数据确定为所述第一数据。
在一种可能的实施方式中，所述终端设备中包括辅小区组SCG无线链路控制RLC层；所述处理模块具体用于：
将已提交至所述SCG RLC层，且未通过所述SCG RLC层发送的数据确定为所述第一数据；其中，所述终端设备用于通过所述SCG RLC层向所述辅基站发送数据。
在一种可能的实施方式中，所述DRB的类型为确认模式；所述处理模 块具体用于：
将已生成且未向所述辅基站发送的数据、以及向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
在一种可能的实施方式中，所述终端设备中包括SCG RLC层；所述处理模块具体用于：
将已提交至所述SCG RLC层且未通过SCG RLC层发送的数据、以及通过所述SCG RLC层向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
在一种可能的实施方式中，所述处理模块还用于：
在所述SCG RLC层删除所述第一数据。
在一种可能的实施方式中，所述第一数据包括多个分组数据汇聚协议PDCP协议数据单元PDU；
所述处理模块还用于，确定所述多个PDCP PDU之间的发送顺序，所述发送顺序与所述多个PDCP PDU提交至所述终端设备的SCG RLC层的顺序相同；
所述发送模块具体用于，按照所述发送顺序，向所述主基站发送所述多个PDCP PDU。
在一种可能的实施方式中，所述终端设备中包括主小区组MCG RLC层；
所述处理模块还用于，向所述MCG RLC层提交所述第一数据；
所述发送模块具体用于，通过所述MCG RLC层向所述主基站发送所述第一数据。
在一种可能的实施方式中，所述发送模块还用于，在所述发送模块向主基站发送第一数据之前，暂停向所述主基站发送除所述第一数据之外的其它数据。
第三方面，本申请实施例提供一种终端设备，包括：处理器和存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如第一方面任一项所述的通信方法。
第四方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器 执行时用于实现第一方面任一项所述的通信方法。
第五方面，本申请实施例提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现第一方面任一项所述的通信方法。
本申请实施例提供的通信方法、装置及设备，终端设备分别与主基站和辅基站连接，在终端设备确定与辅基站之间的通信异常时，终端设备可以先确定出未成功向辅基站发送的第一数据，并向主基站发送该部分数据，以使主基站处理该部分数据，进而避免数据丢失，提高通信的可靠性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请提供的系统架构图；
图2为本申请实施例提供的一种通信方法的流程示意图；
图3为本申请实施例提供的另一种通信方法的流程示意图；
图4为本申请实施例提供的一种通信过程示意图；
图5为本申请实施例提供的一种通信装置的结构示意图；
图6为本发明实施例提供的一种终端设备的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为本申请提供的系统架构图，请参见图1，包括终端设备101、主基站102和辅基站103。终端设备101可以同时与主基站102和辅基站103建立连接并进行通信。
终端设备101中包括分组数据汇聚协议(packet data convergence protocol，PDCP)层、主小小区组(master cell group，MCG)无线链路控制(radio link control，RLC)层和辅小区组(Secondary Cell Group，SCG)RLC层。终端设备101可以通过PDCP层生成待发送的数据包。终端设备101可以通过MCG RLC层与主基站102进行通信，例如，终端设备可以通过MCG RLC层向主基站102发送数据包。终端设备101可以通过SCG RLC层与辅基站103进行通信，例如，终端设备101可以通过MCG RLC层向辅基站103发送数据包。
可选的，主基站可以为LTE基站，辅基站可以为NR基站。或者，主基站可以为NR基站，辅基站可以为LTE基站。
终端设备是一种具有无线收发功能的设备。终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、车载终端设备、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备、可穿戴终端设备等。本申请实施例所涉及的终端设备还可以称为终端、用户设备(user equipment，UE)、接入终端设备、车载终端、工业控制终端、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、无线通信设备、UE代理或UE装置等。终端设备也可以是固定的或者移动的。
在相关技术中，当终端设备与辅基站之间通信异常时，终端设备可以触发SCG失败(SCG failure)过程，终端设备执行该过程是会挂起(暂停)向辅基站发送数据包，以及重设(reset)SCG媒体接入控制(media access control，MAC)层。终端设备还向主基站发送SCG失败通知，例如，失败通知可以为SCG Failure Information(SCG失败信息)，并等待主基站的指示信息，主基站接收到SCG失败通知之后，主基站可以根据SCG失 败的类型(例如SCG侧无线链路异常、SCG侧随机接入失败、SCG目标小区同步失败)、以及测量结果等信息确定下一步动作，下一步动作可以包括：释放SCG、重新添加SCG、等待终端设备上报新的测量报告等。
在终端设备确定与辅基站之间通信异常之后，终端设备通过PDCP层可能继续生成新的数据(例如，协议数据单元(protocol data unit，PDU))，并通过MCG RLC向主基站发送该新的数据，以使主基站将该新的数据发送给接收端。然而，终端设备在确定与辅基站之间的通信异常时，终端设备可以已经通过PDCP层生成待发送至辅基站的数据，并且该数据未成功发送至辅基站，以使辅基站无法将该部分数据成功的发送给接收端，导致数据丢失，使得接收端接收到的数据是不连续的，进而影响终端设备的上层应用。
在本申请实施例中，为了解决上述技术问题，在终端设备确定与辅基站之间的通信异常时，终端设备可以先确定出未成功向辅基站发送的数据，并向主基站发送该部分数据，以使主基站处理该部分数据，进而避免数据丢失，提高通信的可靠性。
下面，通过具体实施例对本申请所示的方法进行说明。需要说明的是，下面几个实施例可以独立存在，也可以相互结合，对于相同或相似的内容，在不同的实施例中不再重复说明。
图2为本申请实施例提供的一种通信方法的流程示意图。请参见图2，该方法可以包括：
S201、终端设备确定终端设备与辅基站之间通信异常。
当终端设备确定出现如下几种情况中的任意一种时，终端设备确定与辅基站之间通信异常：SCG侧无线链路异常、SCG侧随机接入失败、SCG目标小区同步失败等。
S202、终端设备确定未向辅基站成功发送的第一数据。
终端设备可以通过如下方式确定第一数据：终端设备确定终端设备与辅基站之间的数据无线承载(data radio bearer，DRB)，并根据DRB的类型，确定未向辅基站成功发送的第一数据，DRB的类型为非确认模式(unacknowledged mode，UM)或者确认模式(acknowledged mode，AM)。
在DRB的类型为非确认模式时，终端设备通过DRB向基站(主基站或者辅基站)发送数据之后，基站不向终端设备发送响应。
在DRB的类型为非确认模式时，终端设备通过DRB向基站(主基站或者辅基站)发送数据之后，基站向终端设备发送响应。例如，若基站成功接收到终端设备发送的数据，则基站向终端设备发送确认响应(ACK)，若基站未成功接收到终端设备发送的数据，则基站向终端设备发送非确认响应(NACK)。
当DRB的类型不同时，终端设备确定未向辅基站成功发送的第一数据的过程也不同，可以包括如下两种情况：
情况1、DRB的类型为非确认模式。
在该种情况下，终端设备可以将已生成且未向辅基站发送的数据确定为第一数据。即，第一数据包括：终端设备已生成且未向辅基站发送的数据。
终端设备可以通过如下方式向辅基站发送数据，终端设备通过PDCP层生成数据，并将PDCP层生成的数据提交至SCG RLC层，终端设备再通过SCG RLC层向辅基站发送数据。SCG RLC层可以设置发送队列，终端设备将PDCP层生成的数据提交至SCG RLC层之后，按照数据的生成顺序，将数据存储至SCG RLC层的发送队列中，终端设备再按照发送队列中的数据的存储顺序，通过SCG RLC层向辅基站发送数据。由于DRB的类型为非确认模式，因此，在终端设备通过SCG RLC层向辅基站发送第一数据之后，终端设备不会收到辅基站发送的响应消息。
在该种情况下，终端设备已生成且向辅基站发送的数据是指终端设备已提交至SCG RLC层，且未通过SCG RLC层发送的数据。因此，终端设备可以将已提交至SCG RLC层，且未通过SCG RLC层发送的数据确定为第一数据。
情况2、DRB的类型为确认模式。
在该种情况下，终端设备可以将已生成且未向辅基站发送的数据、以及向辅基站发送且未收到确认响应的数据确定为第一数据。即，第一数据包括：终端设备已生成且未向辅基站发送的数据、以及向辅基站发送且未收到确认响应的数据。
终端设备向辅基站发送数据的方式可以参见情况1中的描述，此处不再进行赘述。由于DRB的类型为确认模式，因此，在终端设备在通过SCG RLC层向辅基站发送数据之后，辅基站向终端设备发送响应，若辅基站成 功接收到来自终端设备的数据，则辅基站向终端设备发送确认响应(ACK)；若辅基站未成功接收到来自终端设备的数据，则辅基站向终端设备发送非确认响应(NACK)。
在该种情况下，终端设备已生成且未向辅基站发送的数据为终端设备将已提交至SCG RLC层且未通过SCG RLC层发送的数据，终端设备向辅基站发送且未收到确认响应的数据为终端设备通过SCG RLC层向辅基站发送且未收到确认响应的数据。因此，终端设备可以将已提交至SCG RLC层且未通过SCG RLC层发送的数据、以及通过SCG RLC层向辅基站发送且未收到确认响应的数据确定为第一数据。
S203、终端设备向主基站发送第一数据。
终端设备可以通过如下方式向主基站发送第一数据：终端设备向MCG RLC层提交第一数据，并通过MCG RLC层向主基站发送第一数据。
可选的，第一数据可以包括多个PDCP PDU，相应的，终端设备可以确定该多个PDCP PDU之间的发送顺序，并按照该发送顺序向主基站发送该多个PDCP PDU。其中，PDCP PDU之间的发送顺序与该多个PDCP PDU提交至SCG RLC层的顺序相同。这样，可以使得第一数据的发送顺序正确。
可选的，终端设备向主基站发送第一数据之前，若终端设备通过PDCP层生成新的数据，则终端设备暂时不向主基站发送该新的数据，以避免数据的发送顺序出错。例如，在终端设备通过PDCP层生成新的数据之后，终端设备可以暂时不向MCG RLC层提交该新生成的数据，在第一数据全部提及至MCG RLC层之后，终端设备再将新生成的数据提交至MCG RLC层。
可选的，终端设备还删除已经提及中SCG RLC层的第一数据，以避免在终端设备与辅基站之间的通信正常之后，终端设备重复通过SCG RLC向辅基站发送该第一数据。
S204、主基站处理第一数据。
可选的，主基站可以确定接收端，并向接收端发送该第一数据。
当DRB的类型为确认模式时，主基站还向终端设备发送响应(ACK或者NACK)。当DRB的类型为非确认模式时，主基站不向终端设备发送响应。
本申请实施例提供的通信方法，终端设备分别与主基站和辅基站连接，在终端设备确定与辅基站之间的通信异常时，终端设备可以先确定出未成功向辅基站发送的第一数据，并向主基站发送该部分数据，以使主基站处理该部分数据，进而避免数据丢失，提高通信的可靠性。
下面，通过图3所示的实施例，对上述通信方法进行进一步详细说明。
图3为本申请实施例提供的另一种通信方法的流程示意图。请参见图3，该方法可以包括：
S301、端设备确定终端设备与辅基站之间通信异常。
需要说明的是，S301的执行过程可以参见S201的执行过程，此处不再进行赘述。
S302、终端设备确定终端设备与辅基站之间的DRB的类型。
终端设备可以先确定终端设备与辅基站之间存在DRB，再确定DRB的类型，DRB的类型为确认模式或者非确认模式。
S303、终端设备根据DRB的类型，确定为向辅基站成功发送的第一数据。
其中，第一数据中包括多个PDCP PDU。
需要说明的是，S303的执行过程可以参见S202中的相关描述，此处不再进行赘述。
S304、终端设备确定多个PDCP PDU之间的发送顺序。
可选的，终端设备可以将该多个PDCP PDU在SCG RLC层中的存储顺序确定为该多个PDCP PDU的发送顺序。
例如，在SCG RLC层中可以设置有发送队列，可以将发送队里中的PDCP PDU的顺序确定为该多个PDCP PDU之间的发送顺序。
S305、终端设备按照该发送顺序，向MCG RLC层提交该多个PDCP PDU。
可选的，MCG RLC中可以设置有该发送队列，终端设备可以按照该发送顺序，将该多个PDCP PDU存储至该发送队列中。
在实际应用过程中，在S301之后，以及在S305之前，若终端设备生成新的PDCP PDU，则终端设备暂时不向MCG RLC层提交该新的PDCP PDU，直至S305执行完成。
S306、终端设备在SCG RLC层删除多个PDCP PDU。
终端设备可以清空SCG RLC层的缓存队列中的PDCP PDU。
S307、终端设备按照发送顺序，通过MCG RLC层向主基站发送该多个PDCP PDU。
S308、主基站处理该多个PDCP PDU。
需要说明的是，上述图3只是示意出一种可能的执行顺序，并非对执行顺序的限定，例如，还可以在S307之后执行S306，或者在S305之前执行S306，本申请实施例对此不作具体限定。
在图3所示的实施例中，终端设备分别与主基站和辅基站连接，在终端设备确定与辅基站之间的通信异常时，终端设备可以先确定与辅基站之间是否存在DRB，若是，则终端设备根据DRB的类型确定出未成功向辅基站发送的多个PDCP PDU，以及该多个PDCP PDU之间的发送顺序，并按照该发送顺序向MCG RLC层提交该多个PDCP PDU，以及按照发送顺序通过MCG RLC层向主基站发送该多个PDCP PDU，以使主基站处理该多个PDCP PDU，进而避免数据丢失。并且在终端设备向MCG RLC层提交完成该多个PDCP PDU之前，即使终端设备生成新的PDCP PUD，终端设备也不向MCG RLC层提交该新的PDCP PDU，以避免数据包的顺序发生错误。
下面，结合图4，通过具体示例，对本申请实施例所示的通信方法进行详细说明。
图4为本申请实施例提供的一种通信过程示意图。请参见图4，包括终端设备401、辅基站402和主基站403。终端设备401与辅基站402和主基站403之间分别具有通信连接。
在通信过程中，终端设备确定与辅基站之间的通信链路异常，终端设备确定其与辅基站之间具有DRB，则终端设备获取DRB的类型。假设DRB的类型为非确认模式，则终端设备在SCG RLC层的发送队列中确定PDCP层已生成且未向辅基站发送的PDCP PDU包括：PDCP PDU3、PDCP PDU4、PDCP PDU5。
假设此时终端设备通过PDCP层生成新的PDCP PUD6，则终端设备暂时先不想MCG RLC层提交该PDCP PDU6。
终端设备先将PDCP PDU3、PDCP PDU4、PDCP PDU5分别提交至MCG RLC层的发送队列中，然后，再将PDCP PDU6提交至MCG RLC层 的发送队列中，即，MCG RLC层的发送队列中的PDCP PDU依次顺序为：PDCP PDU3、PDCP PDU4、PDCP PDU5、PDCP PDU6。在终端设备将PDCP PDU3至PDCP PDU5存储至MCG RLC层的发送队列之后，终端设备删除SCG RLC层发送队列中的PDCP PDU3至PDCP PDU5。
终端设备依次通过MCG RLC层向主基站发送PDCP PDU3、PDCP PDU4、PDCP PDU5、PDCP PDU6，以使主基站向接收端依次发送PDCP PDU3、PDCP PDU4、PDCP PDU5、PDCP PDU6，这样，不但可以避免接收到漏接收到PDCP PDU3、PDCP PDU4、PDCP PDU5，还可以避免接收到接收的顺序发送错误。
可选的，若DRB的类型为非确认模式，则终端设备通过MCG RLC层向主基站发送一个PDCP PDU之后，终端设备在MCG RLC层的发送队列中删除该PDCP PDU。例如，终端设备通过MCG RLC层向主基站发送PDCP PDU3之后，终端设备在MCG RLC层的发送队列中删除PDCP PDU3，并将依次移动该发送队列中的其它PDCP PDU，以使PDCP PDU4位于队首。
可选的，若DRB的类型为确认模式，则终端设备通过MCG RLC层向主基站发送一个PDCP PDU之后，终端设备若收到该PDCP PDU对应的确认响应，则终端设备在MCG RLC层的发送队列中删除该PDCP PDU，若终端设备在预设时长内均未收到一个PDCP PDU的确认响应，则终端设备可以通过MCG RLC层重发该PDCP PDU。
图5为本申请实施例提供的一种通信装置的结构示意图。该通信装置10可以设置在终端设备中，终端设备分别与主基站和辅基站连接。请参见图5，该通信装置10包括：处理模块11和发送模块12，其中，
所述处理模块11用于，确定所述终端设备与所述辅基站之间通信异常；
所述处理模块11还用于，确定未向所述辅基站成功发送的第一数据；
所述发送模块12用于，向主基站发送第一数据，以使所述主基站处理所述第一数据。
本申请实施例提供的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述处理模块11具体用于：
确定所述终端设备与所述辅基站之间的数据无线承载DRB；
根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，所述DRB的类型为非确认模式或者确认模式。
在一种可能的实施方式中，11所述DRB的类型为非确认模式；所述处理模块具体用于：
将已生成且未向所述辅基站发送的数据确定为所述第一数据。
在一种可能的实施方式中，所述终端设备中包括辅小区组SCG无线链路控制RLC层；所述处理模块11具体用于：
将已提交至所述SCG RLC层，且未通过所述SCG RLC层发送的数据确定为所述第一数据；其中，所述终端设备用于通过所述SCG RLC层向所述辅基站发送数据。
在一种可能的实施方式中，所述DRB的类型为确认模式；所述处理模块11具体用于：
将已生成且未向所述辅基站发送的数据、以及向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
在一种可能的实施方式中，所述终端设备中包括SCG RLC层；所述处理模块11具体用于：
将已提交至所述SCG RLC层且未通过SCG RLC层发送的数据、以及通过所述SCG RLC层向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
在一种可能的实施方式中，所述处理模块11还用于：
在所述SCG RLC层删除所述第一数据。
在一种可能的实施方式中，所述第一数据包括多个分组数据汇聚协议PDCP协议数据单元PDU；
所述处理模块11还用于，确定所述多个PDCP PDU之间的发送顺序，所述发送顺序与所述多个PDCP PDU提交至所述终端设备的SCG RLC层的顺序相同；
所述发送模块12具体用于，按照所述发送顺序，向所述主基站发送所述多个PDCP PDU。
在一种可能的实施方式中，所述终端设备中包括主小区组MCG RLC层；
所述处理模块11还用于，向所述MCG RLC层提交所述第一数据；
所述发送模块12具体用于，通过所述MCG RLC层向所述主基站发送所述第一数据。
在一种可能的实施方式中，所述发送模块12还用于，在所述发送模块向主基站发送第一数据之前，暂停向所述主基站发送除所述第一数据之外的其它数据。
本申请实施例提供的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图6为本发明实施例提供的一种终端设备的结构示意图。请参见图6，终端设备20可以包括：收发器21、存储器22、处理器23。收发器21可包括：发射器和/或接收器。该发射器还可称为发送器、发射机、发送端口或发送接口等类似描述，接收器还可称为接收器、接收机、接收端口或接收接口等类似描述。示例性地，收发器21、存储器22、处理器23，各部分之间通过总线24相互连接。
存储器22用于存储程序指令；
处理器23用于执行该存储器所存储的程序指令，用以使得终端设备20执行上述任一所示的通信方法。
图6实施例所示的终端设备可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现上述通信方法。
本申请实施例还可提供一种计算机程序产品，该计算机程序产品可以由处理器执行，在计算机程序产品被执行时，可实现上述通信方法。
实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一可读取存储器中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储器(存储介质)包括：只读存储器(英文：read-only memory，缩写：ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文：magnetic tape)、软盘(英文：floppy disk)、光盘(英文：optical disc)及其任意组合。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指 令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。
在本申请中，术语“包括”及其变形可以指非限制性的包括；术语“或”及其变形可以指“和/或”。本本申请中术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。本申请中，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。

Claims (23)

  1. 一种通信方法，其特征在于，应用于终端设备，所述终端设备分别与主基站和辅基站连接，所述方法包括：
    所述终端设备确定所述终端设备与所述辅基站之间通信异常；
    所述终端设备确定未向所述辅基站成功发送的第一数据；
    所述终端设备向主基站发送第一数据，以使所述主基站处理所述第一数据。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备确定未向所述辅基站成功发送的第一数据，包括：
    所述终端设备确定所述终端设备与所述辅基站之间的数据无线承载DRB；
    所述终端设备根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，所述DRB的类型为非确认模式或者确认模式。
  3. 根据权利要求2所述的方法，其特征在于，所述DRB的类型为非确认模式；所述终端设备根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，包括：
    所述终端设备将已生成且未向所述辅基站发送的数据确定为所述第一数据。
  4. 根据权利要求3所述的方法，其特征在于，所述终端设备中包括辅小区组SCG无线链路控制RLC层；所述终端设备将已生成且未向所述辅基站发送的数据确定为所述第一数据，包括：
    所述终端设备将已提交至所述SCG RLC层，且未通过所述SCG RLC层发送的数据确定为所述第一数据；其中，所述终端设备用于通过所述SCG RLC层向所述辅基站发送数据。
  5. 根据权利要求2所述的方法，其特征在于，所述DRB的类型为确认模式；所述终端设备根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，包括：
    所述终端设备将已生成且未向所述辅基站发送的数据、以及向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
  6. 根据权利要求5所述的方法，其特征在于，所述终端设备中包括 SCG RLC层；所述终端设备将已生成且未向所述辅基站发送的数据、以及向所述辅基站发送且未收到确认响应的数据确定为所述第一数据，包括：
    所述终端设备将已提交至所述SCG RLC层且未通过SCG RLC层发送的数据、以及通过所述SCG RLC层向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
  7. 根据权利要求4或6所述的方法，其特征在于，所述方法还包括：
    所述终端设备在所述SCG RLC层删除所述第一数据。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述第一数据包括多个分组数据汇聚协议PDCP协议数据单元PDU；所述终端设备向主基站发送第一数据，包括：
    所述终端设备确定所述多个PDCP PDU之间的发送顺序，所述发送顺序与所述多个PDCP PDU提交至所述终端设备的SCG RLC层的顺序相同；
    所述终端设备按照所述发送顺序，向所述主基站发送所述多个PDCP PDU。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述终端设备中包括主小区组MCG RLC层；所述终端设备向主基站发送第一数据，包括：
    所述终端设备向所述MCG RLC层提交所述第一数据；
    所述终端设备通过所述MCG RLC层向所述主基站发送所述第一数据。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，所述终端设备向主基站发送第一数据之前，还包括：
    所述终端设备暂停向所述主基站发送除所述第一数据之外的其它数据。
  11. 一种通信装置，其特征在于，应用于终端设备，所述终端设备分别与主基站和辅基站连接，所述装置包括：处理模块和发送模块，其中，
    所述处理模块用于，确定所述终端设备与所述辅基站之间通信异常；
    所述处理模块还用于，确定未向所述辅基站成功发送的第一数据；
    所述发送模块用于，向主基站发送第一数据，以使所述主基站处理所述第一数据。
  12. 根据权利要求11所述的装置，其特征在于，所述处理模块具体用于：
    确定所述终端设备与所述辅基站之间的数据无线承载DRB；
    根据所述DRB的类型，确定未向所述辅基站成功发送的第一数据，所述DRB的类型为非确认模式或者确认模式。
  13. 根据权利要求12所述的装置，其特征在于，所述DRB的类型为非确认模式；所述处理模块具体用于：
    将已生成且未向所述辅基站发送的数据确定为所述第一数据。
  14. 根据权利要求13所述的装置，其特征在于，所述终端设备中包括辅小区组SCG无线链路控制RLC层；所述处理模块具体用于：
    将已提交至所述SCG RLC层，且未通过所述SCG RLC层发送的数据确定为所述第一数据；其中，所述终端设备用于通过所述SCG RLC层向所述辅基站发送数据。
  15. 根据权利要求13所述的装置，其特征在于，所述DRB的类型为确认模式；所述处理模块具体用于：
    将已生成且未向所述辅基站发送的数据、以及向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
  16. 根据权利要求15所述的装置，其特征在于，所述终端设备中包括SCG RLC层；所述处理模块具体用于：
    将已提交至所述SCG RLC层且未通过SCG RLC层发送的数据、以及通过所述SCG RLC层向所述辅基站发送且未收到确认响应的数据确定为所述第一数据。
  17. 根据权利要求14或16所述的装置，其特征在于，所述处理模块还用于：
    在所述SCG RLC层删除所述第一数据。
  18. 根据权利要求11-17任一项所述的装置，其特征在于，所述第一数据包括多个分组数据汇聚协议PDCP协议数据单元PDU；
    所述处理模块还用于，确定所述多个PDCP PDU之间的发送顺序，所述发送顺序与所述多个PDCP PDU提交至所述终端设备的SCG RLC层的顺序相同；
    所述发送模块具体用于，按照所述发送顺序，向所述主基站发送所述多个PDCP PDU。
  19. 根据权利要求11-18任一项所述的装置，其特征在于，所述终端设备中包括主小区组MCG RLC层；
    所述处理模块还用于，向所述MCG RLC层提交所述第一数据；
    所述发送模块具体用于，通过所述MCG RLC层向所述主基站发送所述第一数据。
  20. 根据权利要求11-19任一项所述的装置，其特征在于，所述发送模块还用于，在所述发送模块向主基站发送第一数据之前，暂停向所述主基站发送除所述第一数据之外的其它数据。
  21. 一种终端设备，其特征在于，包括：处理器和存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求1至10任一项所述的通信方法。
  22. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现权利要求1至10任一项所述的通信方法。
  23. 一种计算机程序产品，其特征在于，包括计算机程序，该计算机程序被处理器执行时实现权利要求1至10任一项所述的通信方法。
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