WO2017101069A1 - 传输数据的方法和终端设备 - Google Patents

传输数据的方法和终端设备 Download PDF

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Publication number
WO2017101069A1
WO2017101069A1 PCT/CN2015/097709 CN2015097709W WO2017101069A1 WO 2017101069 A1 WO2017101069 A1 WO 2017101069A1 CN 2015097709 W CN2015097709 W CN 2015097709W WO 2017101069 A1 WO2017101069 A1 WO 2017101069A1
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Prior art keywords
mac
network device
rlc
sdu
entity
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PCT/CN2015/097709
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English (en)
French (fr)
Inventor
徐小英
郑潇潇
徐敏
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华为技术有限公司
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Priority to PCT/CN2015/097709 priority Critical patent/WO2017101069A1/zh
Publication of WO2017101069A1 publication Critical patent/WO2017101069A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems

Definitions

  • Embodiments of the present invention relate to the field of communications technologies, and, more particularly, to a method and terminal device for transmitting data.
  • a retransmission mechanism is a hybrid automatic repeat request (English: Hybrid Automatic Repeat Request, abbreviation: HARQ) retransmission.
  • Another type of retransmission mechanism is retransmission by the entity controlled by the radio link control (English: Radio Link Control, RLC for short).
  • the RLC entity of the terminal device is responsible for segmenting one RLC SDU to generate multiple RLC PDUs.
  • the MAC entity is responsible for transmitting the plurality of RLC PDUs to the network device.
  • the RLC entity of the network device sends the feedback information of the RLC layer to the RLC entity of the terminal device, to indicate whether the RLC entity of the network device completely receives the RLC SDU.
  • the RLC entity of the network device sends feedback information of the RLC layer in two trigger modes: a polling request trigger or a timer trigger.
  • the polling request triggers the RLC entity of the network device to send the feedback information of the RLC layer, including the following steps: the terminal device sends a polling request to the network device; after receiving the polling request, the network device RLC entity of the network device sends the RLC entity to the terminal device.
  • the RLC entity sends feedback information of the RLC layer.
  • the RLC entity that triggers the network device to send the feedback information of the RLC layer includes the following steps: the network device starts a timer, and the RLC entity of the network device sends the feedback information of the RLC layer to the RLC entity of the terminal device when the timer expires. .
  • the terminal device After receiving the feedback information of the RLC layer, the terminal device sends a response to the network device, where the response is used to indicate whether the terminal device successfully receives the feedback information of the RLC layer.
  • the terminal device In the case of contention based access, the terminal device will contend for the uplink channel to send the response, thereby affecting the uplink transmission of other terminal devices.
  • the embodiment of the invention provides a method for transmitting data and a terminal device, which does not require the network device to send feedback information of the RLC layer to the terminal device.
  • an embodiment of the present invention provides a method for transmitting data, where the method includes: The media access control MAC entity of the device acquires a first MAC service data unit SDU; the MAC entity segments the first MAC SDU, and determines N segment MAC SDUs, where N is a positive integer greater than 1; The network device sends the N segmented MAC SDUs; the MAC entity receives M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N segmented MAC SDUs, where M is less than or A positive integer equal to N; the MAC entity determines, according to the M responses, whether the network device successfully receives the first MAC SDU.
  • the MAC entity in the terminal device may be responsible for segmenting the data that needs to be sent, and may confirm, by the MAC entity, whether the network device completely receives the requirement according to the response of the MAC SDU for confirming whether the segment is successfully received.
  • the data sent Therefore, in the solution shown in FIG. 1, the terminal device does not need to receive a radio link control (English: Radio Link Control, RLC) layer message to determine whether the network device completely receives the data sent by the terminal device, and reduces the terminal device and the network device. Signaling interaction between.
  • the terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received.
  • the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened.
  • the terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the media access control MAC entity of the terminal device acquires the first MAC service data unit SDU, and the MAC entity receives the packet data convergence of the terminal device.
  • the PDCP protocol data unit PDU sent by the protocol PDCP entity and determines that the PDCP PDU is the first MAC SDU.
  • the MAC entity may be responsible for segmenting the acquired PDCP PDU, and may also determine whether the network device successfully receives the PDCP PDU according to the received response.
  • the media access control MAC entity of the terminal device acquires the first MAC service data unit SDU, including: the MAC entity receiving the wireless link of the terminal device Controlling the RLC PDU sent by the RLC entity and determining that the RLC PDU is the first MAC SDU.
  • the MAC entity may be responsible for segmentation, and may also determine whether the network device successfully receives the RLC SDU according to the received response.
  • the determining, by the MAC entity, whether the network device successfully receives the first MAC SDU according to the M responses including: if the MAC entity determines that the M responses indicate that the network device successfully receives the N Segmented MAC SDU, determining that the network device successfully receives the first MAC SDU; or, if the MAC entity determines that the M responses include the first response or determines that there is an unreceived response, determining that the network device is not Receiving the first MAC SDU, the first response is used to indicate that the network device does not successfully receive the corresponding segmented MAC SDU.
  • the determining, by the MAC entity, that the network device does not receive the first MAC SDU further includes: the MAC entity determining a segment MAC SDU that is not successfully received; the MAC entity segmenting the segment MAC SDU that is not successfully received, and determining P re-segment MAC SDUs, where P is greater than 1.
  • the MAC entity sends the P re-segmented MAC SDUs to the network device; the MAC entity receives the Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P
  • the weighted segmented MAC SDU where Q is a positive integer less than or equal to P; the MAC entity determines, according to the Q responses, whether the network device successfully receives the first MAC SDU. In this way, the MAC entity may be responsible for re-segmenting the fragmented MAC SDUs that failed to transmit and retransmitting the re-segmented segmented MAC SDUs to the network device.
  • an embodiment of the present invention provides a method for transmitting data, where the method includes: a radio link control RLC entity of a terminal device segments a first RLC SDU, and determines N segment RLC SDUs, where N is greater than 1.
  • the MAC entity of the terminal device acquires the N segment RLC SDUs; the MAC entity determines N MAC SDUs according to the N segment RLC SDUs and sends the N MAC SDUs to the network device; the MAC entity Receiving M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N MAC SDUs, where M is a positive integer less than or equal to N; the MAC entity generates according to the M responses
  • the RLC feedback information the MAC entity sends the RLC feedback information to the RLC entity; the RLC entity determines, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU.
  • the MAC entity in the terminal device can directly confirm whether the network device completely receives the data to be sent according to the response for confirming whether the MAC SDU is successfully received, and notify the RLC entity by using the RLC feedback information. Therefore, in the solution shown in FIG. 3, the terminal device does not need to receive a radio link control (English: Radio Link Control, RLC) layer message to determine whether the network device completely receives data sent by the terminal device, and reduces the terminal device and the network device. It Signaling interaction between. The terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received.
  • a radio link control English: Radio Link Control, RLC
  • the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened.
  • the terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the MAC entity generates the RLC feedback information according to the M responses, including: if the MAC entity determines that the M responses indicate that the network device successfully receives Determining, the RLC feedback information is the RLC positive feedback, or determining that the RLC feedback information is the RLC if the MAC entity determines that the N responses include the first response or determines that there is an unreceived response. Negative feedback, the first response is used to indicate that the network device does not successfully receive the corresponding MAC SDU.
  • the RLC entity determines, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU, including Determining that the network device successfully receives the first RLC SDU if the RLC entity determines that the RLC feedback information is the RLC positive feedback; or determining the network device if the RLC entity determines that the RLC feedback information is the RLC negative feedback The first RLC SDU was not successfully received.
  • the method further includes: the MAC entity determining a MAC SDU that is not successfully received; the MAC entity segmenting the unsuccessfully received MAC SDU, determining P re-segmented MAC SDUs, P being a positive integer greater than 1; the MAC entity Sending the P re-segmented MAC SDUs to the network device; the MAC entity receiving the Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P re-segmented MAC SDUs, Q is a positive integer less than or equal to P; the MAC entity determines, according to the Q responses, whether the network device successfully receives the P re-segmented MAC SDUs. In this way, the MAC entity may be responsible for re-segmenting the failed
  • an embodiment of the present invention further provides a terminal device, where the terminal device includes: a determining unit, a sending unit, and a receiving unit.
  • the determining unit, the transmitting unit and the receiving unit are operative to perform the method provided by the first aspect.
  • an embodiment of the present invention further provides a terminal device, where the terminal device includes: a determining unit, a sending unit, and a receiving unit.
  • the determining unit, the transmitting unit and the receiving unit are operative to perform the method provided by the first aspect.
  • an embodiment of the present invention further provides a computer readable storage medium, the program stored in the computer readable storage medium comprising instructions for executing the method provided by the first aspect.
  • an embodiment of the present invention further provides a computer readable storage medium, the program stored in the computer readable storage medium comprising instructions for executing the method provided by the second aspect.
  • an embodiment of the present invention further provides a terminal device, where the terminal device includes: a memory, a processor, and a transceiver circuit.
  • the memory is for storing instructions to perform the method provided by the first aspect.
  • the processor reads the instructions stored in the memory and, in conjunction with the transceiver circuit, performs the steps of the method provided by the first aspect.
  • an embodiment of the present invention further provides a terminal device, where the terminal device includes: a memory, a processor, and a transceiver circuit.
  • the memory is for storing instructions to perform the method provided by the second aspect.
  • the processor reads the instructions stored in the memory and, in conjunction with the transceiver circuit, performs the steps of the method provided by the second aspect.
  • FIG. 1 is a schematic flowchart of a method for transmitting data according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a network device according to an embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the system includes, but is not limited to, an LTE Frequency Division Duplex (“FDD”) system and an LTE Time Division Duplex (“TDD”).
  • a terminal device a device that provides voice and/or data connectivity to a user, including a wireless terminal or a wired terminal.
  • the wireless terminal can be a handheld device with wireless connectivity, or other processing device connected to a wireless modem, and a mobile terminal that communicates with one or more core networks via a wireless access network.
  • the wireless terminal can be a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • the wireless terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • the wireless terminal can be part of a user equipment (English: user equipment, referred to as UE).
  • the network device which may be a base station, for example, may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an eNB or an e-NodeB in LTE. Not limited.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB e-NodeB
  • LTE Long Term Evolution
  • FIG. 1 is a schematic flowchart of a method for transmitting data according to an embodiment of the present invention.
  • the medium access control (English: Medium Access Control, MAC for short) entity of the terminal device acquires a first MAC service data unit (English: Service Data Unit, SDU for short).
  • the MAC entity segments the first MAC SDU, and determines N segment MAC SDUs, where N is a positive integer greater than 1.
  • the MAC entity sends the N segmented MAC SDUs to a network device.
  • the MAC entity receives M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N segmented MAC SDUs, where M is a positive integer less than or equal to N.
  • the MAC entity determines, according to the M responses, whether the network device successfully receives the first MAC SDU.
  • the MAC entity in the terminal device may be responsible for segmenting the data to be transmitted, and may confirm whether the network device is complete by the MAC entity directly according to the response for confirming whether the segmented MAC SDU is successfully received. Receive the data that needs to be sent. Therefore, in the solution shown in FIG. 1, the terminal device does not need to receive a radio link control (English: Radio Link Control, RLC) layer message to determine whether the network device completely receives the data sent by the terminal device, and reduces the terminal device and the network device. Signaling interaction between. The terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received.
  • a radio link control English: Radio Link Control, RLC
  • the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened.
  • the terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the acquiring, by the MAC entity of the terminal device, the first MAC SDU includes: the MAC entity receiving the PDCP sent by the packet data convergence protocol (English: Packet Data Convergence Protocol, PDCP) A protocol data unit (English: Protocol Data Unit, PDU for short) and determines that the PDCP PDU is the first MAC SDU.
  • the MAC entity may be responsible for segmenting the acquired PDCP PDU, and may also determine whether the network device successfully receives the PDCP PDU according to the received response.
  • the acquiring, by the MAC entity of the terminal device, the first MAC SDU includes: the MAC entity receiving the RLC PDU sent by the RLC entity of the terminal device, and determining the RLC PDU.
  • the data in the RLC PDU is the same as the data in the RLC SDU.
  • the MAC entity may be responsible for segmentation, and may also determine whether the network device successfully receives the RLC SDU according to the received response.
  • the determining, by the MAC entity, whether the network device successfully receives the first MAC SDU according to the M responses includes: if the MAC entity determines that the M responses indicate that the network device is Receiving the N segmented MAC SDUs, determining that the network device successfully receives the first MAC SDU; or determining, if the MAC entity determines that the M responses include the first response or determining that there is an unreceived response, determining The network device does not receive the first MAC SDU, and the first response is used to indicate that the network device does not successfully receive the corresponding segmented MAC SDU.
  • the method further includes: the MAC entity determining a segmented MAC SDU that is not successfully received; and the MAC entity is not successfully received.
  • Segment MAC SDU performs segmentation to determine P re-segmented MAC SDUs, P is a positive integer greater than 1; the MAC entity sends the P re-segmented MAC SDUs to the network device; the MAC entity receives the network device to send Q responses, wherein the Q responses are used to indicate whether the network device successfully receives the P re-segmented MAC SDUs, and Q is a positive integer less than or equal to P; the MAC entity determines the network device according to the Q responses Whether the first MAC SDU is successfully received.
  • the MAC entity may be responsible for re-segmenting the fragmented MAC SDUs that failed to transmit and retransmitting the re-segmented segmente
  • FIG. 2 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • the MAC entity of the terminal device acquires the first MAC SDU.
  • the RLC entity does not exist in the terminal device.
  • the PDCP entity of the terminal device will send the PDCP PDU to the MAC entity.
  • the MAC entity determines that the received PDCP is the first MAC SDU.
  • an RLC entity exists in the terminal device.
  • the RLC entity sends an RLC PDU to the MAC entity.
  • the RLC entity is not responsible for segmentation.
  • the data in the RLC PDU sent by the RLC entity is the same as the data in the RLC SDU.
  • the MAC entity segments the first MAC SDU to determine N segmented MAC SDUs.
  • the MAC entity divides the first MAC SDU into N segmented MAC SDUs according to the size of the data packet suitable for transmission by the MAC layer to send the segmented MAC SDU to the network device.
  • MAC PDU may also be referred to as a MAC PDU.
  • the MAC entity may only generate the segment MAC SDU for indicating the segmentation. Identification information. For example, if the MAC entity divides the PDCP PDU with sequence number 1 into three segmented MAC SDUs, the three segmented MAC SDUs may be indicated using sequence numbers 1, 2, and 3, respectively. For example, if the MAC entity divides the PDCP PDU with sequence number 2 into three segmented MAC SDUs, the three segmented MAC SDUs may be indicated using sequence numbers 4, 5, and 6, respectively.
  • the MAC entity may only generate the segment MAC SDU for indicating Identification information. For example, if the MAC entity divides the RLC PDU with sequence number 1 into three segmented MAC SDUs, the three segmented MAC SDUs may be indicated using sequence numbers 1, 2, and 3, respectively. For example, if the MAC entity divides the RLC PDU with sequence number 2 into three segmented MAC SDUs, the three segmented MAC SDUs may be indicated using sequence numbers 4, 5, and 6, respectively.
  • the MAC entity may generate identifier information for indicating the PDCP PDU. And identification information of the segmented MAC SDU. For example, if the MAC entity receives two PDCP PDUs, the MAC entity may use sequence numbers 1 and 2 as identification information for indicating the two PDCP PDUs, respectively. If the MAC entity divides the RLC PDU with sequence number 1 into three segmented MAC SDUs, the three segmented MAC SDUs may be indicated using subsequence numbers 1, 2, and 3, respectively. If the MAC entity divides the RLC PDU with sequence number 2 into three segmented MAC SDUs, the three segment MAC SDUs may be indicated using subsequence numbers 1, 2, and 3, respectively.
  • the MAC entity may generate the identifier information used to indicate the RLC PDU. And identification information of the segmented MAC SDU. For example, if the MAC entity receives two RLC PDUs, the MAC entity may use sequence numbers 1 and 2 as identification information for indicating the two RLC PDUs, respectively. If the MAC entity divides the RLC PDU with sequence number 1 into three segmented MAC SDUs, the three segmented MAC SDUs may be indicated using subsequence numbers 1, 2, and 3, respectively. If the MAC entity divides the RLC PDU with sequence number 2 into three segmented MAC SDUs, the sub-sequence numbers 1, 2, and 3 may be used to indicate the three points respectively. Segment MAC SDU.
  • the MAC entity may use sequence numbers 1 and 2 as identification information for indicating the two RLC PDUs, respectively. If the MAC entity divides the RLC PDU with sequence number 1 into three segmented MAC SDUs, the three segmented MAC SDUs may
  • the MAC entity sends the N segmented MAC SDUs to the network device.
  • the process in which the MAC entity sends the N segmented MAC SDUs to the network device is the same as the process in which the MAC entity in the prior art sends the MAC SDU obtained by the RLC entity to the RLC SDU segment, and need not be described.
  • the MAC entity receives M responses sent by the network device.
  • the MAC entity determines, according to the M responses, whether the network device successfully receives the first MAC SDU.
  • each of the N segmented MAC SDUs may be sent to the network device through a MAC layer data packet.
  • the terminal device sends N MAC layer data packets to the network device, and each MAC layer data packet may include a segment MAC SDU.
  • a MAC layer packet may also include multiple segmented MAC SDUs.
  • the network device After receiving the MAC layer data packet sent by the terminal device, the network device sends a response to the UE within a certain timing range, where the response may carry the identifier information of the terminal device and the MAC layer data packet sequence number, or the identifier information of the terminal device. And MAC layer packet sequence number, segment number (ie, identification information used to indicate the segmentation MAC SDU). The response is used to indicate whether the network device successfully receives the MAC layer data packet sent by the terminal device. The terminal device receives a response within the timing range to determine whether the network device successfully receives the corresponding segmented MAC SDU. If the terminal device does not receive the response within the timing range, it is determined that the network device does not successfully receive the corresponding segmented MAC SDU.
  • the network device may send a response to the terminal device after receiving a MAC layer data packet, or may indicate the reception status of multiple MAC layer data packets through a response. For example, the network device may indicate in the response that the initial MAC layer packet number and the terminated MAC layer packet number were successfully received, or indicate the MAC layer packet number that was successfully received, and the start number of the segment and the end of the segment. number.
  • the network device can send the response through a physical layer or MAC layer message. If the response is sent by the network device through the physical layer, the MAC entity of the terminal device may also obtain the response through the physical layer entity. In particular, the network device can send the response in a physical control channel or a physical shared channel.
  • the network device sends a response to the terminal device after successfully receiving a data packet.
  • the network device if the network device successfully receives the N data packets, the network device sends N response messages indicating successful reception to the terminal device, and each response corresponds to one data packet.
  • the terminal device successfully receives the N responses, and determines that the N responses are all responses indicating that the corresponding data packet is successfully received, and determines that the network device successfully receives the first MAC SDU.
  • M is equal to N.
  • N 1 N data packets of the packet successfully received if the network device the network device may send a response to the terminal device N for indicating a successful reception, or an N for indicating transmission success
  • the received response and N 2 are used to indicate a response that was not successfully received, where the sum of N 1 and N 2 is N. If the terminal device determines that a response indicating that the reception was not successfully received is received, or determines that the number of successfully received responses received is less than the number of transmitted data packets, it is determined that the network device does not receive the first MAC SDU.
  • step 206 to step 210 may also be included.
  • the MAC entity determines a segmented MAC SDU that was not successfully received.
  • the MAC entity may determine the segment MAC SDU that was not successfully received by using the identifier information in the response for indicating the segment MAC SDU.
  • the MAC entity segments the unsuccessfully received segmented MAC SDU, and determines P re-segmented MAC SDUs, where P is a positive integer greater than 1.
  • the MAC entity sends the P re-segmented MAC SDUs to the network device.
  • the MAC entity receives the Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P re-segmented MAC SDUs, where Q is a positive integer less than or equal to P.
  • the MAC entity determines, according to the Q responses, whether the network device successfully receives the first MAC SDU.
  • Steps 207 to 210 are similar to steps 202 to 205, and need not be described here.
  • the terminal device does not need to receive the RLC layer feedback information sent by the network device. Therefore, the terminal device also does not need to send a polling frame for triggering the network device to send the RLC layer feedback information to the network device. Alternatively, the network device does not need to start a timer, and determines whether to send RLC layer feedback information to the terminal device according to the timer.
  • the above technical solution saves signaling overhead and improves feedback efficiency.
  • the terminal device also does not need to send a response to the network device for feedback whether the RLC layer message is successfully received. Therefore, in the case of contention-based uplink transmission, the number of times the terminal device competes for the use of the uplink channel is reduced, and the uplink channel resource is saved.
  • FIG. 3 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • the RLC entity of the terminal device segments the first RLC SDU, and determines N segment RLC SDUs, where N is a positive integer greater than 1.
  • the MAC entity of the terminal device acquires the N segment RLC SDUs.
  • the MAC entity determines, according to the N segmented RLC SDUs, N MAC SDUs and sends the N MAC SDUs to the network device.
  • the MAC entity receives M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N MAC SDUs, where M is a positive integer less than or equal to N.
  • the MAC entity generates RLC feedback information according to the M responses.
  • the MAC entity sends the RLC feedback information to the RLC entity.
  • the RLC entity determines, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU.
  • the MAC entity in the terminal device can directly confirm whether the network device completely receives the data to be sent according to the response for confirming whether the MAC SDU is successfully received, and notify the RLC entity through the RLC feedback information. Therefore, in the solution shown in FIG. 3, the terminal device does not need to receive a radio link control (English: Radio Link Control, RLC) layer message to determine whether the network device completely receives data sent by the terminal device, and reduces the terminal device and the network device. Signaling interaction between. The terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received.
  • a radio link control English: Radio Link Control, RLC
  • the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened.
  • the terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the RLC entity before the RLC entity of the terminal device segments the first RLC SDU, the RLC entity receives the PDCP PDU sent by the PDCP entity of the terminal device, and determines that the PDCP PDU is the first RLC SDU.
  • the MAC entity generates the RLC feedback information according to the M responses, including: if the MAC entity determines that the M responses indicate that the network device successfully receives the N MAC SDUs, determining that the RLC feedback information is an RLC positive feedback. Or, if the MAC entity determines the N The first response is determined to include the first response or the presence of the unreceived response, and the RLC feedback information is determined to be an RLC negative feedback, the first response being used to indicate that the network device does not successfully receive the corresponding MAC SDU.
  • the RLC entity determines, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU, if the RLC entity determines that the RLC feedback information is an RLC positive feedback, determining that the network device successfully receives the first An RLC SDU; or, if the RLC entity determines that the RLC feedback information is the RCL negative feedback, determining that the network device has not successfully received the first RLC SDU.
  • the method may further include: the MAC entity determines a MAC SDU that is not successfully received; and the MAC entity segments the unsuccessfully received MAC SDU. Determining P re-segmented MAC SDUs, P being a positive integer greater than one; the MAC entity transmitting the P re-segmented MAC SDUs to the network device; the MAC entity receiving the Q responses sent by the network device, where The Q responses are used to indicate whether the network device successfully receives the P re-segmented MAC SDUs, and Q is a positive integer less than or equal to P.
  • the MAC entity determines, according to the Q responses, whether the network device successfully receives the P devices. Re-segmented MAC SDU. In this way, the MAC entity may be responsible for re-segmenting the failed MAC SDU and retransmitting the re-segmented segmented MAC SDU to the network device.
  • FIG. 4 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • the RLC entity of the terminal device acquires the first RLC SDU.
  • the RLC entity receives the PDCP PDU sent by the PDCP entity of the terminal device and determines that the PDCP PDU is the first RLC SDU.
  • the RLC entity segments the first RLC SDU, and determines N segment RLC SDUs, where N is a positive integer greater than 1.
  • a segmented RLC SDU may also be referred to as an RLC PDU.
  • the RLC PDU adds a sequence number and/or a segment number to the RLC SDU.
  • the MAC entity of the terminal device acquires N segment RLC SDUs.
  • the MAC entity determines N MAC SDUs according to the N segment RLC SDUs.
  • the MAC entity sends the N MAC SDUs to the network device.
  • the MAC entity receives M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N MAC SDUs, where M is a positive integer less than or equal to N.
  • Steps 402 to 406 are the same as the prior art, and need not be described here.
  • the MAC entity generates RLC feedback information according to the M responses.
  • each of the N MAC SDUs may be sent to the network device through a MAC layer data packet.
  • the terminal device sends N MAC layer data packets to the network device, and each MAC layer data packet may include one MAC SDU.
  • a MAC layer packet can also include multiple MAC SDUs.
  • the network device After receiving the MAC layer data packet sent by the terminal device, the network device sends a response to the UE within a certain timing range, where the response may carry the identifier information of the terminal device and the MAC layer data packet sequence number, or the identifier information of the terminal device. And MAC layer packet sequence number, segment number (that is, identification information used to indicate the MAC SDU). The response is used to indicate whether the network device successfully receives the MAC layer data packet sent by the terminal device. The terminal device receives a response within the timing range to determine whether the network device successfully receives the corresponding MAC SDU. If the terminal device does not receive the response within the timing range, it is determined that the network device does not successfully receive the corresponding MAC SDU.
  • the network device may send a response to the terminal device after receiving a MAC layer data packet, or may indicate the reception status of multiple MAC layer data packets through a response. For example, the network device may indicate in the response that the initial MAC layer packet number and the terminated MAC layer packet number were successfully received, or indicate the MAC layer packet number that was successfully received, and the start number of the segment and the end of the segment. number.
  • the network device can send the response through a physical layer or MAC layer message. If the response is sent by the network device through the physical layer, the MAC entity of the terminal device may also obtain the response through the physical layer entity. In particular, the network device can send the response in a physical control channel or a physical shared channel.
  • the network device sends a response to the terminal device after successfully receiving a data packet.
  • the network device if the network device successfully receives the N data packets, the network device sends N response messages indicating successful reception to the terminal device, and each response corresponds to one data packet.
  • the terminal device successfully receives the N responses, and determines that the N responses are all responses indicating that the corresponding data packet is successfully received, and then determines that the RLC feedback information is an RLC positive feedback.
  • M is equal to N.
  • the network device may send a response to the terminal device N for indicating a successful reception, or an N for indicating transmission success
  • the received response and N 2 are used to indicate a response that was not successfully received, where the sum of N 1 and N 2 is N. If the terminal device determines that a response indicating that the reception was not successfully received is received, or determines that the number of successfully received responses received is less than the number of transmitted data packets, it is determined that the RLC feedback information is RLC negative feedback.
  • the MAC entity sends the RLC feedback information to the RLC entity.
  • the RLC entity determines, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU.
  • the RLC entity determines that the received RLC feedback information is RLC positive feedback, it is determined that the network device successfully receives the first RLC SDU. If the RLC entity determines that the received RLC feedback information is RLC negative feedback, it is determined that the network device does not successfully receive the first RLC SDU.
  • step 410 to step 414 may be further included.
  • the MAC entity determines a MAC SDU that is not successfully received.
  • the MAC entity may determine, by using the identifier information used to indicate the MAC SDU in the response, the MAC SDU that is not successfully received.
  • the MAC entity segments the unsuccessfully received MAC SDU, and determines P re-segmented MAC SDUs, where P is a positive integer greater than 1.
  • the specific process of segmenting the unsuccessfully received MAC SDU by the MAC entity is similar to the process of segmenting the MAC SDU by the MAC entity in the embodiment of FIG. 1 , and details are not described herein.
  • the MAC entity sends the P re-segmented MAC SDUs to the network device.
  • the MAC entity receives the Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P re-segmented MAC SDUs, where Q is a positive integer less than or equal to P.
  • the MAC entity determines, according to the Q responses, whether the network device successfully receives the P re-segmented MAC SDUs. If the MAC entity determines that the network device successfully receives the P re-segmented MAC SDUs, sends RLC positive feedback to the RLC entity; if the MAC entity determines that the network device does not successfully receive the P re-segmented MAC SDUs, RLC negative feedback is sent to the RLC entity.
  • Steps 412 to 414 are similar to the steps in the embodiment of FIG. 2, and are similar to steps 205 to 205, and need not be described here.
  • the re-segmentation of the unsuccessfully received MAC SDU may be performed by the RLC entity.
  • the MAC entity may determine the MAC SDU that was not successfully received through the identity information used to indicate the MAC SDU in the response and notify the RLC entity of the unsuccessfully received MAC SDU.
  • the RLC entity re-segmentes the RLC PDUs that need to be retransmitted (ie, the MAC SDUs that are not successfully received), determines the re-segmented RLC PDUs, and sends the re-segmented RLC PDUs to the network device through the MAC entity.
  • the terminal device does not need to receive the RLC layer feedback information sent by the network device. Therefore, the terminal device also does not need to send a polling frame for triggering the network device to send the RLC layer feedback information to the network device. Alternatively, the network device does not need to start a timer, and determines whether to send RLC layer feedback information to the terminal device according to the timer.
  • the above technical solution saves signaling overhead and improves feedback efficiency.
  • the terminal device also does not need to send a response to the network device for feedback whether the RLC layer message is successfully received. Therefore, in the case of contention-based uplink transmission, the number of times the terminal device competes for the use of the uplink channel is reduced, and the uplink channel resource is saved.
  • FIG. 5 is a schematic flowchart of another method for transmitting data according to an embodiment of the present invention.
  • the network device receives, by the terminal device, a plurality of uplink data packets that are sent by using the data sharing channel, where the multiple uplink data packets are used to carry the first data, where the uplink data packet includes data volume information.
  • the data amount information is used to indicate the number of bits or the number of data packets of the first data.
  • the network device determines, according to the data volume information, whether to receive the first data completely. If it is determined that the first data is completely received, determining to send the affirmative feedback information of the RLC layer to the terminal device, where the positive feedback information of the RLC layer is used. Instructing the network device to successfully receive the first data.
  • the negative feedback information of the RLC layer is sent to the terminal device, and the negative feedback information of the RLC layer is used to indicate that the network device does not successfully receive the first data.
  • the RLC layer feedback information may be sent to the terminal device immediately, without triggering through the polling request. Or timer triggering, improved feedback RLC The efficiency of the feedback information of the layer enables the feedback information of the RLC layer to reach the terminal device more quickly.
  • the network device may further start a timer, and send the negative feedback information of the RLC layer to the terminal device if the timer expires and the first data is not completely received.
  • the start timing of the timer may be any of the following: when the RLC entity of the network device is created, when a discontinuous uplink packet is received, or when the first uplink packet is received.
  • the embodiment of the invention further provides a terminal device capable of performing various steps performed by the terminal device as shown in FIG. 1 or FIG. 2 .
  • the terminal device includes: a determining unit, a transmitting unit, and a receiving unit.
  • a determining unit configured to determine a first MAC service data unit SDU.
  • the determining unit is further configured to segment the first MAC SDU, and determine N segment MAC SDUs, where N is a positive integer greater than 1.
  • a sending unit configured to send the N segmented MAC SDUs to the network device.
  • a receiving unit configured to receive M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N segmented MAC SDUs, where M is a positive integer less than or equal to N.
  • the determining unit is further configured to determine, according to the M responses, whether the network device successfully receives the first MAC SDU.
  • the terminal device can directly confirm whether the network device completely receives the data to be sent according to a response for confirming whether the segmented MAC SDU is successfully received. Therefore, the terminal device does not need to receive the RLC layer message to determine whether the network device completely receives the data sent by the terminal device, and reduces signaling interaction between the terminal device and the network device. The terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received. Therefore, in the case of contention-based uplink transmission, the number of times the terminal device competes for the use of the uplink channel is reduced, and the uplink channel resource is saved. At the same time, the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened. The terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the determining unit is specifically configured to determine that the packet data convergence protocol PDCP protocol data unit PDU is the first MAC SDU.
  • the determining unit is specifically configured to determine that the radio link control RLC PDU is the first MAC SDU.
  • the determining unit is configured to: if it is determined that the M responses indicate that the network device successfully receives the N segmented MAC SDUs, determine that the network device successfully receives the first MAC SDU; or, if the M devices are determined If the response includes the first response or determines that there is an unreceived response, it is determined that the network device does not receive the first MAC SDU, and the first response is used to indicate that the network device does not successfully receive the corresponding segmented MAC SDU.
  • the determining unit is further configured to determine a segment MAC SDU that is not successfully received.
  • the determining unit is further configured to segment the unsuccessfully received segmented MAC SDU, and determine P re-segmented MAC SDUs, where P is a positive integer greater than 1.
  • the sending unit is further configured to send the P re-segmented MAC SDUs to the network device.
  • the receiving unit is further configured to receive the Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P re-segmented MAC SDUs, where Q is a positive integer less than or equal to P.
  • the determining unit is further configured to determine, according to the Q responses, whether the network device successfully receives the first MAC SDU.
  • the embodiment of the invention further provides a terminal device capable of performing various steps performed by the terminal device as shown in FIG. 3 or FIG. 4.
  • the terminal device includes: a determining unit, a transmitting unit, and a receiving unit.
  • a determining unit configured to segment the first RLC SDU, and determine N segment RLC SDUs, where N is a positive integer greater than 1.
  • the determining unit is further configured to acquire the N segment RLC SDUs.
  • the determining unit is further configured to determine N MAC SDUs according to the N segment RLC SDUs.
  • a sending unit configured to send the N MAC SDUs to the network device.
  • a receiving unit configured to receive M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N MAC SDUs, where M is a positive integer less than or equal to N.
  • the determining unit is further configured to generate RLC feedback information according to the M responses.
  • the determining unit is further configured to determine, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU.
  • the terminal device can confirm whether the network device completely receives the data to be sent according to the response for confirming whether the MAC SDU is successfully received. Therefore, the terminal device does not need to receive the RLC layer message to determine whether the network device completely receives the data sent by the terminal device, and reduces signaling interaction between the terminal device and the network device. The terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received. Therefore, in the case of contention-based uplink transmission, The number of times that the terminal device competes to use the uplink channel is reduced, and the uplink channel resource is saved. At the same time, the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened. The terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the determining unit is configured to: if it is determined that the M responses indicate that the network device successfully receives the N MAC SDUs, determine that the RLC feedback information is an RLC positive feedback; or, if it is determined that the N responses include the first A response or determining that there is an unreceived response determines that the RLC feedback information is an RLC negative feedback, the first response being used to indicate that the network device has not successfully received the corresponding MAC SDU.
  • the determining unit is specifically configured to: if it is determined that the RLC feedback information is an RLC positive feedback, determine that the network device successfully receives the first RLC SDU; or, if it is determined that the RLC feedback information is the RLC negative feedback, determine The network device does not successfully receive the first RLC SDU.
  • the determining unit is further configured to determine a MAC SDU that is not successfully received.
  • the determining unit is further configured to segment the unsuccessfully received MAC SDU, and determine P re-segmented MAC SDUs, where P is a positive integer greater than 1.
  • the sending unit is further configured to send the P re-segmented MAC SDUs to the network device.
  • the receiving unit is further configured to receive the Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P re-segmented MAC SDUs, where Q is a positive integer less than or equal to P.
  • the determining unit is further configured to determine, according to the Q responses, whether the network device successfully receives the P re-segmented MAC SDUs.
  • the embodiment of the invention further provides a network device capable of performing various steps performed by the network device in the method shown in FIG. 5.
  • the network device includes a receiving unit, a transmitting unit, and a determining unit.
  • the receiving unit is configured to receive, by the terminal device, a plurality of uplink data packets that are sent by using the data sharing channel, where the multiple uplink data packets are used to carry the first data, where the uplink data packet includes data volume information.
  • the data amount information is used to indicate the number of bits or the number of data packets of the first data.
  • the determining unit is configured to determine, according to the data amount information, whether the first data is completely received.
  • the sending unit is configured to send a positive feedback information of the RLC layer to the terminal device, where the determining unit determines to completely receive the first data, where the positive feedback information of the RLC layer is used to indicate that the network device successfully receives the first One data.
  • the sending unit is further configured to: when the determining unit determines that the first data is not completely received, send negative feedback information of the RLC layer to the terminal device, where the negative feedback information of the RLC layer is used to indicate The network device does not successfully receive the first data.
  • the RLC layer feedback information may be sent to the terminal device immediately, without triggering through the polling request. Or the timer is triggered to improve the efficiency of feedback of the feedback information of the RLC layer, so that the feedback information of the RLC layer can reach the terminal device more quickly.
  • the determining unit is further configured to determine a timer.
  • the sending unit may be further configured to send the negative feedback information of the RLC layer to the terminal device if the timer expires and the determining unit determines that the first data is not completely received.
  • the start timing of the timer may be any of the following: when the RLC entity of the network device is created, when a discontinuous uplink packet is received, or when the first uplink packet is received.
  • FIG. 6 is a structural block diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 6, the terminal device 600 includes a processor 601, a memory 602, and a transceiver circuit 603.
  • bus system 604 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 604 various buses are labeled as bus system 604 in FIG.
  • Processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 601 or an instruction in a form of software.
  • the processor 601 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc.
  • RAM random access memory
  • ROM read-only memory
  • programmable read only memory or an electrically erasable programmable memory
  • register etc.
  • the storage medium is located in a memory 602, which is used to store instructions for performing the steps performed by the terminal device as in FIG. 1 or 2.
  • the processor 601 reads and runs the instructions in the memory 602 and, in conjunction with its hardware, performs the steps of the above method.
  • the processor 601 runs a MAC entity, and the MAC entity acquires the first MAC SDU.
  • the MAC entity segments the first MAC SDU to determine N segmented MAC SDUs, where N is a positive integer greater than one.
  • the transceiver circuit 603 is configured to send the N segmented MAC SDUs to the network device and receive M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N segmented MAC SDUs, M is a positive integer less than or equal to N.
  • the MAC entity determines, according to the M responses, whether the network device successfully receives the first MAC SDU.
  • the MAC entity in the terminal device 600 may be responsible for segmenting the data that needs to be transmitted, and may confirm whether the network device completely receives the data to be transmitted by the MAC entity directly according to the response for confirming whether the segmented MAC SDU is successfully received. Therefore, the terminal device does not need to receive the RLC layer message to determine whether the network device completely receives the data sent by the terminal device, and reduces signaling interaction between the terminal device and the network device. The terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received. Therefore, in the case of contention-based uplink transmission, the number of times the terminal device competes for the use of the uplink channel is reduced, and the uplink channel resource is saved.
  • the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened.
  • the terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the processor 601 runs a PDCP entity, where the MAC entity receives the PDCP PDU sent by the PDCP entity and determines that the PDCP PDU is the first MAC SDU.
  • the processor 601 runs an RLC entity, where the MAC entity receives the RLC PDU sent by the RLC entity and determines that the RLC PDU is the first MAC SDU.
  • the MAC entity determines, according to the M responses, whether the network device successfully receives the first MAC SDU, including: if the MAC entity determines that the M responses indicate that the network device successfully receives the N segmented MAC SDUs, Determining that the network device successfully receives the first MAC SDU; or if the MAC entity determines that the M responses include the first response or determines that there is an unreceived response, determining that the network device does not receive the first MAC SDU, the first response is used to indicate that the network device does not successfully receive the corresponding segmented MAC SDU.
  • the MAC entity determines that the network device does not receive the first MAC SDU. In this case, the MAC entity determines the segmented MAC SDU that was not successfully received. The MAC entity segments the unsuccessfully received segmented MAC SDU to determine P re-segmented MAC SDUs, where P is a positive integer greater than one.
  • the transceiver circuit 603 is further configured to send the P re-segmented MAC SDUs to the network device and receive Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P re-segments Segment MAC SDU, Q is a positive integer less than or equal to P. The MAC entity determines, according to the Q responses, whether the network device successfully receives the first MAC SDU.
  • FIG. 7 is a structural block diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 7, the terminal device 700 includes a processor 701, a memory 702, and a transceiver circuit 703.
  • bus system 704 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 704 various buses are labeled as bus system 704 in FIG.
  • Processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in a form of software.
  • the processor 701 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc.
  • RAM random access memory
  • ROM read-only memory
  • programmable read only memory or an electrically erasable programmable memory
  • register etc.
  • the storage medium is located in a memory 702, and a memory 702 for storing instructions to perform the steps performed by the terminal device as in FIG. 1 or 2.
  • the processor 701 reads and runs the instructions in the memory 702 and, in conjunction with its hardware, performs the steps of the above method.
  • the RLC entity and the MAC entity are running in the processor 701.
  • the RLC entity segments the first RLC SDU and determines N segment RLC SDUs, N being a positive integer greater than one.
  • the MAC entity acquires the N segmented RLC SDUs.
  • the MAC entity determines N MAC SDUs based on the N segmented RLC SDUs.
  • the transceiver circuit 703 is configured to send the N MAC SDUs to the network device and receive M responses sent by the network device, where the M responses are used to indicate whether the network device successfully receives the N MAC SDUs, where M is less than or A positive integer equal to N.
  • the MAC entity generates RLC feedback information according to the M responses.
  • the MAC entity sends the RLC feedback information to the RLC entity.
  • the RLC entity determines, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU.
  • the MAC entity in the terminal device 700 can directly confirm whether the network device completely receives the data to be sent according to the response for confirming whether the MAC SDU is successfully received, and notify the RLC entity through the RLC feedback information. Therefore, the terminal device does not need to receive the RLC layer message to determine whether the network device completely receives the data sent by the terminal device, and reduces signaling interaction between the terminal device and the network device. The terminal device also does not need to send a response to the network device for feedback whether the RLC layer message was successfully received. Therefore, in the case of contention-based uplink transmission, the number of times the terminal device competes for the use of the uplink channel is reduced, and the uplink channel resource is saved.
  • the network device does not need to trigger the RLC layer message to the terminal device by using a timer. Therefore, the time to determine whether the data transmission is successful is shortened.
  • the terminal device also does not need to send a polling request to the network device to confirm whether the data was successfully received.
  • the MAC entity generates the RLC feedback information according to the M responses, including: if the MAC entity determines that the M responses indicate that the network device successfully receives the N MAC SDUs, determining that the RLC feedback information is an RLC positive feedback. Or, if the MAC entity determines that the N responses include the first response or determines that there is an unreceived response, determining that the RLC feedback information is an RLC negative feedback, the first response is used to indicate that the network device is not successfully received. Corresponding MAC SDU.
  • the RLC entity determines, according to the RLC feedback information, whether the network device successfully receives the first RLC SDU, if the RLC entity determines that the RLC feedback information is an RLC positive feedback, determining that the network device successfully receives the first An RLC SDU; or, if the RLC entity determines that the RLC feedback information is the RLC negative feedback, determining that the network device has not successfully received the first RLC SDU.
  • the The MAC entity determines the MAC SDU that was not successfully received.
  • the MAC entity segments the unsuccessfully received MAC SDU, and determines P re-segmented MAC SDUs, where P is a positive integer greater than one.
  • the transceiver circuit 703 is further configured to send the P re-segmented MAC SDUs to the network device and receive Q responses sent by the network device, where the Q responses are used to indicate whether the network device successfully receives the P re-segments Segment MAC SDU, Q is a positive integer less than or equal to P.
  • the MAC entity determines, according to the Q responses, whether the network device successfully receives the P re-segmented MAC SDUs.
  • FIG. 8 is a structural block diagram of a network device according to an embodiment of the present invention.
  • the network device 800 includes a processor 801, a memory 802, and a transceiver circuit 803.
  • bus system 804 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 804 various buses are labeled as bus system 804 in FIG.
  • Processor 801 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 801 or an instruction in a form of software.
  • the processor 801 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc.
  • RAM random access memory
  • ROM read-only memory
  • programmable read only memory or an electrically erasable programmable memory
  • register etc.
  • the storage medium is located in a memory 802 for storing instructions for performing the steps performed by the terminal device as in FIG. 1 or 2.
  • the processor 801 reads and runs the instructions in the memory 802 and, in conjunction with its hardware, performs the steps of the above method.
  • the transceiver circuit 803 is configured to receive, by the terminal device, a plurality of uplink data packets that are sent by using the data sharing channel, where the multiple uplink data packets are used to carry the first data, where the uplink data packet includes data volume information.
  • the data amount information is used to indicate the number of bits or the number of data packets of the first data.
  • the processor 801 is configured to determine, according to the data amount information, whether the first data is completely received.
  • the transceiver circuit 803 is configured to send a positive feedback information of the RLC layer to the terminal device, where the processor 801 determines that the first data is completely received, where the positive feedback information of the RLC layer is used to indicate that the network device successfully receives the first One data.
  • the transceiver circuit 803 is further configured to: when the processor 801 determines that the first data is not completely received, send the negative feedback information of the RLC layer to the terminal device, where the negative feedback information of the RLC layer is used to indicate that the network device does not successfully receive the First data.
  • the RLC layer feedback information may be sent to the terminal device immediately, without triggering through the polling request. Or the timer is triggered to improve the efficiency of feedback of the feedback information of the RLC layer, so that the feedback information of the RLC layer can reach the terminal device more quickly.
  • the processor 801 is further configured to determine a timer.
  • the transceiver circuit 803 is further configured to send the negative feedback information of the RLC layer to the terminal device if the timer expires and the processor 801 determines that the first data is not completely received.
  • the start timing of the timer may be any of the following: when the RLC entity of the network device is created, when a discontinuous uplink packet is received, or when the first uplink packet is received.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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  • Mobile Radio Communication Systems (AREA)

Abstract

本发明实施例提供传输数据的方法和终端设备。该方法包括：终端设备的媒体接入控制MAC实体获取第一MAC业务数据单元SDU；该MAC实体对该第一MAC SDU进行分段，确定N个分段MAC SDU；该MAC实体向网络设备发送该N个分段MAC SDU；该MAC实体接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个分段MAC SDU；该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU。基于上述技术方案，终端设备无需接收RLC层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。

Description

传输数据的方法和终端设备 技术领域
本发明实施例涉及通信技术领域，并且更具体地，涉及传输数据的方法和终端设备。
背景技术
现有技术中存在两种重传机制。一种重传机制是混合自动重传请求(英文：Hybrid Automatic Repeat Request，简称：HARQ)重传。另一种重传机制由无线链路控制(英文：Radio Link Control，简称：RLC)实体负责的重传。
具体地，在第二种重传机制中，终端设备的RLC实体负责将一个RLC SDU分段，生成多个RLC PDU。MAC实体负责将该多个RLC PDU发送至网络设备。网络设备的RLC实体会向终端设备的RLC实体发送RLC层的反馈信息，用于指示网络设备的RLC实体是否完整接收到该RLC SDU。
网络设备的RLC实体发送RLC层的反馈信息有两种触发方式：轮询请求触发或定时器触发。轮询请求触发网络设备的RLC实体发送RLC层的反馈信息包括以下步骤：终端设备向网络设备发送轮询请求；网络设备在接收到该轮询请求后，网络设备的RLC实体会向终端设备的RLC实体发送RLC层的反馈信息。定时器触发网络设备的RLC实体发送RLC层的反馈信息包括以下步骤：网络设备会启动一个定时器，网络设备的RLC实体在定时器超时时，会向终端设备的RLC实体发送RLC层的反馈信息。
终端设备在接收到RLC层的反馈信息后，会向该网络设备发送响应，该响应用于指示该终端设备是否成功接收该RLC层的反馈信息。在基于竞争的接入的情况下，该终端设备会竞争上行信道以发送该响应，从而影响其他终端设备的上行传输。
发明内容
本发明实施例提供传输数据的方法和终端设备，无需网络设备向终端设备发送RLC层的反馈信息。
第一方面，本发明实施例提供一种传输数据的方法，该方法包括：终端 设备的媒体接入控制MAC实体获取第一MAC业务数据单元SDU；该MAC实体对该第一MAC SDU进行分段，确定N个分段MAC SDU，N为大于1的正整数；该MAC实体向网络设备发送该N个分段MAC SDU；该MAC实体接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个分段MAC SDU，M为小于或等于N的正整数；该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU。基于上述技术方案，终端设备中的MAC实体可以负责对需要发送的数据进行分段，并且可以由MAC实体直接根据用于确认是否成功接收分段的MAC SDU的响应确认网络设备是否完整接收该需要发送的数据。因此，图1所示的方案中，终端设备无需接收无线链路控制(英文：Radio Link Control，简称：RLC)层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
结合第一方面，在第一方面的第一种可能的实现方式中，该终端设备的媒体接入控制MAC实体获取第一MAC业务数据单元SDU包括：该MAC实体接收该终端设备的分组数据汇聚协议PDCP实体发送的PDCP协议数据单元PDU并确定该PDCP PDU为该第一MAC SDU。这样，在该终端设备中不存在RLC实体的情况下，MAC实体可以负责将获取到的PDCP PDU进行分段，并且还可以根据接收到的响应确定网络设备是否成功接收到该PDCP PDU。
结合第一方面，在第一方面的第二种可能的实现方式中，该终端设备的媒体接入控制MAC实体获取第一MAC业务数据单元SDU包括：该MAC实体接收该终端设备的无线链路控制RLC实体发送的RLC PDU并确定该RLC PDU为该第一MAC SDU。这样，在RLC实体未对RLC SDU进行分段的情况下，MAC实体可以负责分段，并且还可以根据接收到的响应确定网络设备是否成功接收到该RLC SDU。
结合第一方面或第一方面的上述任一种可能的实现方式，在第一方面的 第三种可能的实现方式中，该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU，包括：若该MAC实体确定该M个响应指示该网络设备成功接收该N个分段MAC SDU，则确定该网络设备成功接收该第一MAC SDU；或者，若该MAC实体确定该M个响应中包括第一响应或确定存在未接收到的响应，则确定该网络设备未接收到该第一MAC SDU，该第一响应用于指示该网络设备未成功接收对应的分段MAC SDU。
结合第一方面或第一方面的上述任一种可能的实现方式，在第一方面的第四种可能的实现方式中，在该MAC实体确定该网络设备未接收到该第一MAC SDU的情况下，该方法还包括：该MAC实体确定未成功接收的分段MAC SDU；该MAC实体对该未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；该MAC实体向该网络设备发送该P个重分段MAC SDU；该MAC实体接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数；该MAC实体根据该Q个响应，确定该网络设备是否成功接收该第一MAC SDU。这样，该MAC实体可以负责对传输失败的分段MAC SDU进行重分段并将重分段后的分段MAC SDU重传至该网络设备。
第二方面，本发明实施例提供一种传输数据的方法，该方法包括：终端设备的无线链路控制RLC实体对第一RLC SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数；该终端设备的MAC实体获取该N个分段RLC SDU；该MAC实体根据该N个分段RLC SDU，确定N个MAC SDU并向网络设备发送该N个MAC SDU；该MAC实体接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个MAC SDU，M为小于或等于N的正整数；该MAC实体根据该M个响应，生成RLC反馈信息；该MAC实体将该RLC反馈信息发送至该RLC实体；该RLC实体根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU。基于上述技术方案，终端设备中的MAC实体可以直接根据用于确认是否成功接收MAC SDU的响应确认网络设备是否完整接收该需要发送的数据，并通过RLC反馈信息通知RLC实体。因此，图3所示的方案中，终端设备无需接收无线链路控制(英文：Radio Link Control，简称：RLC)层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之 间的信令交互。终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
结合第二方面，在第二方面的第一种可能的实现方式中，该MAC实体根据该M个响应，生成RLC反馈信息，包括：若该MAC实体确定该M个响应指示该网络设备成功接收该N个MAC SDU，则确定该RLC反馈信息为RLC肯定反馈；或者，若该MAC实体确定该N个响应中包括第一响应或确定存在未接收到的响应，则确定该RLC反馈信息为RLC否定反馈，该第一响应用于指示该网络设备未成功接收对应的MAC SDU。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，该RLC实体根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU，包括：若该RLC实体确定该RLC反馈信息为RLC肯定反馈，则确定该网络设备成功接收该第一RLC SDU；或者，若该RLC实体确定该RLC反馈信息为该RLC否定反馈，则确定该网络设备未成功接收该第一RLC SDU。
结合第二方面或第二方面的上述任一种可能的实现方式，在第二方面的第三种可能的实现方式中，在确定该网络设备未成功接收该第一RLC SDU的情况下，该方法还包括：该MAC实体确定未成功接收的MAC SDU；该MAC实体对该未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；该MAC实体向该网络设备发送该P个重分段MAC SDU；该MAC实体接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数；该MAC实体根据该Q个响应，确定该网络设备是否成功接收该P个重分段MAC SDU。这样，该MAC实体可以负责对传输失败的MAC SDU进行重分段并将重分段后的分段MAC SDU重传至该网络设备。
第三方面，本发明实施例还提供一种终端设备，该终端设备包括：确定单元、发送单元和接收单元。该确定单元、该发送单元和该接收单元用于执行该第一方面提供的方法。
第四方面，本发明实施例还提供一种终端设备，该终端设备包括：确定单元、发送单元和接收单元。该确定单元、该发送单元和该接收单元用于执行该第一方面提供的方法。
第五方面，本发明实施例还提供一种计算机可读存储介质，该计算机可读存储介质存储的程序包括用于执行该第一方面提供的方法的指令。
第六方面，本发明实施例还提供一种计算机可读存储介质，该计算机可读存储介质存储的程序包括用于执行该第二方面提供的方法的指令。
第七方面，本发明实施例还提供一种终端设备，该终端设备包括：存储器、处理器和收发电路。该存储器用于存储执行该第一方面提供的方法的指令。该处理器读取该存储器中存储的指令，结合该收发电路，完成该第一方面提供的方法的步骤。
第八方面，本发明实施例还提供一种终端设备，该终端设备包括：存储器、处理器和收发电路。该存储器用于存储执行该第二方面提供的方法的指令。该处理器读取该存储器中存储的指令，结合该收发电路，完成该第二方面提供的方法的步骤。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅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的前提下，还可以根据这些附图获得其他的附图。
图1是根据本发明实施例提供的传输数据的方法的示意性流程图。
图2是根据本发明实施例提供的另一传输数据的方法的示意性流程图。
图3是根据本发明实施例提供的另一种传输数据的方法的示意性流程图。
图4是根据本发明实施例提供的另一传输数据的方法的示意性流程图。
图5是根据本发明实施例提供的另一种传输数据的方法的示意性流程图。
图6是根据本发明实施例提供的终端设备的结构框图。
图7是根据本发明实施例提供的终端设备的结构框图。
图8是根据本发明实施例提供的网络设备的结构框图。
具体实施方式
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，所述的实施例是本发明的一部分实施例，而不是全部实施例。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的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
应理解，本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，简称“GSM”)系统、码分多址(Code Division Multiple Access，简称“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access，简称“WCDMA”)系统、通用分组无线业务(General Packet Radio Service，简称“GPRS”)、长期演进(Long Term Evolution，简称“LTE”)系统，包括但不限于LTE频分双工(Frequency Division Duplex，简称“FDD”)系统和LTE时分双工(Time Division Duplex，简称“TDD”)。
终端设备，指向用户提供语音和/或数据连通性的设备(device)，包括无线终端或有线终端。无线终端可以是具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备，经无线接入网与一个或多个核心网进行通信的移动终端。例如，无线终端可以是移动电话(或称为“蜂窝”电话)和具有移动终端的计算机。又如，无线终端也可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。再如，无线终端可以为用户设备(英文为：user equipment，简称：UE)的一部分。
网络设备，可以是基站，例如可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的eNB或e-NodeB，本发明并不限定。
图1是根据本发明实施例提供的传输数据的方法的示意性流程图。
101，终端设备的媒体接入控制(英文：Medium Access Control，简称：MAC)实体获取第一MAC业务数据单元(英文：Service Data Unit，简称：SDU)。
102，该MAC实体对该第一MAC SDU进行分段，确定N个分段MAC SDU，N为大于1的正整数。
103，该MAC实体向网络设备发送该N个分段MAC SDU。
104，该MAC实体接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个分段MAC SDU，M为小于或等于N的正整数。
105，该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU。
根据图1所示的方法，终端设备中的MAC实体可以负责对需要发送的数据进行分段，并且可以由MAC实体直接根据用于确认是否成功接收分段的MAC SDU的响应确认网络设备是否完整接收该需要发送的数据。因此，图1所示的方案中，终端设备无需接收无线链路控制(英文：Radio Link Control，简称：RLC)层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
可选的，作为一个实施例，该终端设备的MAC实体获取第一MAC SDU包括：该MAC实体接收该终端设备的分组数据汇聚协议(英文：Packet Data Convergence Protocol，简称：PDCP)实体发送的PDCP协议数据单元(英文：Protocol Data Unit，简称：PDU)并确定该PDCP PDU为该第一MAC SDU。这样，在该终端设备中不存在RLC实体的情况下，MAC实体可以负责将获取到的PDCP PDU进行分段，并且还可以根据接收到的响应确定网络设备是否成功接收到该PDCP PDU。
可选的，作为另一个实施例，该终端设备的MAC实体获取第一MAC SDU包括：该MAC实体接收该终端设备的该MAC实体接收该终端设备的RLC实体发送的RLC PDU并确定该RLC PDU为该第一MAC SDU。其中，该RLC PDU中的数据与RLC SDU中的数据相同。这样，在RLC实体未对RLC SDU进行分段的情况下，MAC实体可以负责分段，并且还可以根据接收到的响应确定网络设备是否成功接收到该RLC SDU。
具体地，该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU包括：若该MAC实体确定该M个响应指示该网络设备成 功接收该N个分段MAC SDU，则确定该网络设备成功接收该第一MAC SDU；或者，若该MAC实体确定该M个响应中包括第一响应或确定存在未接收到的响应，则确定该网络设备未接收到该第一MAC SDU，该第一响应用于指示该网络设备未成功接收对应的分段MAC SDU。
进一步，在该MAC实体确定该网络设备未接收到该第一MAC SDU的情况下，该方法还包括：该MAC实体确定未成功接收的分段MAC SDU；该MAC实体对该未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；该MAC实体向该网络设备发送该P个重分段MAC SDU；该MAC实体接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数；该MAC实体根据该Q个响应，确定该网络设备是否成功接收该第一MAC SDU。这样，该MAC实体可以负责对传输失败的分段MAC SDU进行重分段并将重分段后的分段MAC SDU重传至该网络设备。
为了帮助本领域技术人员更好地理解本发明，下面将结合具体实施了对本发明的技术方案进行进一步描述。可以理解的是，该具体实施例仅是为了帮助更好地理解如图1所示的方法，而并非是对本发明的限制。
图2是根据本发明实施例提供的另一传输数据的方法的示意性流程图。
201，终端设备的MAC实体获取第一MAC SDU。
可选的，作为一个实施例，该终端设备中不存在RLC实体。在此情况下，该终端设备的PDCP实体会将PDCP PDU发送至该MAC实体。该MAC实体确定接收到的PDCP为第一MAC SDU。
可选的，作为另一个实施例，该终端设备中存在RLC实体。该RLC实体向该MAC实体发送RLC PDU。但是，该RLC实体并不负责分段。在此情况下，该RLC实体发送的RLC PDU中的数据与该RLC SDU中的数据相同。
202，该MAC实体对该第一MAC SDU分段，确定N个分段MAC SDU。
具体地，该MAC实体会根据适合MAC层传输的数据包的大小，将该第一MAC SDU分为N个分段MAC SDU以便将分段MAC SDU发送至网络设备。
本领域技术人员可以理解，分段MAC SDU也可以被称为MAC PDU。
可选的，当MAC实体对MAC SDU进行分段时，若接收的PDCP PDU中包括用于指示PDCP PDU的标识信息(例如序列号)时，该MAC实体可以只生成用于指示分段MAC SDU的标识信息。例如，若该MAC实体将序列号为1的PDCP PDU分为三个分段MAC SDU，则可以使用序列号1、2、3分别指示这三个分段MAC SDU。例如，若该MAC实体将序列号为2的PDCP PDU分为三个分段MAC SDU，则可以使用序列号4、5、6分别指示这三个分段MAC SDU。
可选的，当MAC实体对MAC SDU进行分段时，若接收的RLC PDU中包括用于指示RLC PDU的标识信息(例如序列号)时，该MAC实体可以只生成用于指示分段MAC SDU的标识信息。例如，若该MAC实体将序列号为1的RLC PDU分为三个分段MAC SDU，则可以使用序列号1、2、3分别指示这三个分段MAC SDU。例如，若该MAC实体将序列号为2的RLC PDU分为三个分段MAC SDU，则可以使用序列号4、5、6分别指示这三个分段MAC SDU。
可选的，当MAC实体对MAC SDU进行分段时，若接收的PDCP PDU中不包括用于指示PDCP PDU的标识信息(例如序列号)，该MAC实体可以生成用于指示PDCP PDU的标识信息和分段MAC SDU的标识信息。例如，若该MAC实体接收到两个PDCP PDU，则MAC实体可以分别使用序列号1和2作为用于指示这两个PDCP PDU的标识信息。若该MAC实体将序列号为1的RLC PDU分为三个分段MAC SDU，则可以使用子序列号1、2、3分别指示这三个分段MAC SDU。若该MAC实体将序列号为2的RLC PDU分为三个分段MAC SDU，则可以使用子序列号1、2、3分别指示这三个分段MAC SDU。
可选的，当MAC实体对MAC SDU进行分段时，若接收的RLC PDU中不包括用于指示RLC PDU的标识信息(例如序列号)，该MAC实体可以生成用于指示RLC PDU的标识信息和分段MAC SDU的标识信息。例如，若该MAC实体接收到两个RLC PDU，则MAC实体可以分别使用序列号1和2作为用于指示这两个RLC PDU的标识信息。若该MAC实体将序列号为1的RLC PDU分为三个分段MAC SDU，则可以使用子序列号1、2、3分别指示这三个分段MAC SDU。若该MAC实体将序列号为2的RLC PDU分为三个分段MAC SDU，则可以使用子序列号1、2、3分别指示这三个分 段MAC SDU。
203，该MAC实体将该N个分段MAC SDU发送至该网络设备。
该MAC实体将N个分段MAC SDU发送至该网络设备的过程与现有技术中MAC实体发送由RLC实体对RLC SDU分段得到的MAC SDU的过程相同，就不必赘述。
204，该MAC实体接收该网络设备发送的M个响应。
205，该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU。
具体地，该N个分段MAC SDU中的每个分段MAC SDU可以通过一个MAC层数据包发送给该网络设备。换句话说，该终端设备会向该网络设备发送N个MAC层数据包，每个MAC层数据包可以包括一个分段MAC SDU。当然，一个MAC层数据包也可以包括多个分段MAC SDU。
该网络设备在接收到该终端设备发送的MAC层数据包后，在一定的定时范围内向UE发送响应，该响应中可以携带终端设备的标识信息和MAC层数据包序号，或者终端设备的标识信息和MAC层数据包序号、分段号(即用于指示分段MAC SDU的标识信息)。该响应用于指示该网络设备是否成功接收到终端设备发送的MAC层数据包。终端设备在该定时范围内接收响应，以确定该网络设备是否成功接收对应的分段MAC SDU。若终端设备在该定时范围内没有收到响应，则确定该网络设备未成功接收到对应的分段MAC SDU。
该网络设备可以在接收到一个MAC层数据包后向该终端设备发送一个响应，也可以通过一个响应可以指示多个MAC层数据包的接收情况。例如，该网络设备可以在响应中指示成功接收的起始MAC层数据包号和终止MAC层数据包号，或者指示成功接收的MAC层数据包号以及分段的起始号和分段的结束号。
该网络设备可以通过物理层或MAC层消息发送该响应。如果该响应是网络设备通过物理层发送的，则该终端设备的MAC实体也可以通过物理层实体获取到该响应。具体地，网络设备可以在物理控制信道或物理共享信道中发送该响应。
假设，该网络设备在成功接收到一个数据包后就向终端设备发送一个响应。在此情况下，如果该网络设备成功接收该N个数据包，则该网络设备会 向该终端设备发送N个用于指示成功接收的响应，每个响应对应一个数据包。该终端设备成功接收到该N个响应，并且确定该N个响应均是指示成功接收对应的数据包的响应，则确定该网络设备成功接收该第一MAC SDU。在此情况下，M等于N。如果该网络设备成功接收该N个数据包中的N1个数据包，则该网络设备可以向该终端设备发送N1个用于指示成功接收的响应，或者，发送N1个用于指示成功接收的响应和N2个用于指示未成功接收的响应，其中N1与N2的和为N。如果该终端设备确定接收到用于指示未成功接收的响应，或者，确定接收到的成功接收的响应的数目小于发送的数据包的数目，则确定该网络设备未接收到该第一MAC SDU。
如果该终端设备确定出该网络设备未成功接收该第一MAC SDU，那么还可以包括步骤206至步骤210。
206，该MAC实体确定未成功接收的分段MAC SDU。
具体地，该MAC实体可以通过响应中的用于指示分段MAC SDU的标识信息确定未成功接收的分段MAC SDU。
207，该MAC实体对该未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数。
208，该MAC实体向该网络设备发送该P个重分段MAC SDU。
209，该MAC实体接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数。
210，该MAC实体根据该Q个响应，确定该网络设备是否成功接收该第一MAC SDU。
步骤207至步骤210与步骤202至步骤205类似，在此就不必赘述。
通过上述技术方案，在进行RLC层数据重传的过程中，终端设备无需接收网络设备发送的RLC层反馈信息。因此，终端设备也无需向网络设备发送用于触发网络设备发送RLC层反馈信息的轮询帧。或者，该网络设备也无需启动定时器，并根据定时器确定是否向终端设备发送RLC层反馈信息。上述技术方案节省了信令开销并且提高了反馈效率。此外，终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。
图3是根据本发明实施例提供的另一种传输数据的方法的示意性流程图。
301，终端设备的RLC实体对第一RLC SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数。
302，该终端设备的MAC实体获取该N个分段RLC SDU。
303，该MAC实体根据该N个分段RLC SDU，确定N个MAC SDU并向网络设备发送该N个MAC SDU。
304，该MAC实体接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个MAC SDU，M为小于或等于N的正整数。
305，该MAC实体根据该M个响应，生成RLC反馈信息。
306，该MAC实体将该RLC反馈信息发送至该RLC实体。
307，该RLC实体根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU。
根据图3所示的方法，终端设备中的MAC实体可以直接根据用于确认是否成功接收MAC SDU的响应确认网络设备是否完整接收该需要发送的数据，并通过RLC反馈信息通知RLC实体。因此，图3所示的方案中，终端设备无需接收无线链路控制(英文：Radio Link Control，简称：RLC)层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
可选的，作为一个实施例，在该终端设备的RLC实体对该第一RLC SDU进行分段之前，该RLC实体接收该终端设备的PDCP实体发送的PDCP PDU并确定该PDCP PDU为该第一RLC SDU。
具体地，该MAC实体根据该M个响应，生成RLC反馈信息，包括：若该MAC实体确定该M个响应指示该网络设备成功接收该N个MAC SDU，则确定该RLC反馈信息为RLC肯定反馈；或者，若该MAC实体确定该N 个响应中包括第一响应或确定存在未接收到的响应，则确定该RLC反馈信息为RLC否定反馈，该第一响应用于指示该网络设备未成功接收对应的MAC SDU。
具体地，该RLC实体根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU，包括：若该RLC实体确定该RLC反馈信息为RLC肯定反馈，则确定该网络设备成功接收该第一RLC SDU；或者，若该RLC实体确定该RLC反馈信息为该RCL否定反馈，则确定该网络设备未成功接收该第一RLC SDU。
进一步，在确定该网络设备未成功接收该第一RLC SDU的情况下，该方法还可以包括：该MAC实体确定未成功接收的MAC SDU；该MAC实体对该未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；该MAC实体向该网络设备发送该P个重分段MAC SDU；该MAC实体接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数；该MAC实体根据该Q个响应，确定该网络设备是否成功接收该P个重分段MAC SDU。这样，该MAC实体可以负责对传输失败的MAC SDU进行重分段并将重分段后的分段MAC SDU重传至该网络设备。
为了帮助本领域技术人员更好地理解本发明，下面将结合具体实施了对本发明的技术方案进行进一步描述。可以理解的是，该具体实施例仅是为了帮助更好地理解如图3所示的方法，而并非是对本发明的限制。
图4是根据本发明实施例提供的另一传输数据的方法的示意性流程图。
401，终端设备的RLC实体获取第一RLC SDU。
具体地，该RLC实体接收该终端设备的PDCP实体发送的PDCP PDU并确定该PDCP PDU为该第一RLC SDU。
402，该RLC实体对该第一RLC SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数。
分段RLC SDU也可称为RLC PDU。RLC PDU在RLC SDU上增加序列号和/或分段号。
403，该终端设备的MAC实体获取N个分段RLC SDU。
404，该MAC实体根据该N个分段RLC SDU，确定N个MAC SDU。
405，该MAC实体向网络设备发送该N个MAC SDU。
406，该MAC实体接收该网络设备发送的M个响应，其中该M个响应用于指示网络设备是否成功接收该N个MAC SDU，M为小于或等于N的正整数。
步骤402至步骤406与现有技术相同，在此就不必赘述。
407，该MAC实体根据该M个响应，生成RLC反馈信息。
具体地，该N个MAC SDU中的每个MAC SDU可以通过一个MAC层数据包发送给该网络设备。换句话说，该终端设备会向该网络设备发送N个MAC层数据包，每个MAC层数据包可以包括一个MAC SDU。当然，一个MAC层数据包也可以包括多个MAC SDU。
该网络设备在接收到该终端设备发送的MAC层数据包后，在一定的定时范围内向UE发送响应，该响应中可以携带终端设备的标识信息和MAC层数据包序号，或者终端设备的标识信息和MAC层数据包序号、分段号(即用于指示MAC SDU的标识信息)。该响应用于指示该网络设备是否成功接收到终端设备发送的MAC层数据包。终端设备在该定时范围内接收响应，以确定该网络设备是否成功接收对应的MAC SDU。若终端设备在该定时范围内没有收到响应，则确定该网络设备未成功接收到对应的MAC SDU。
该网络设备可以在接收到一个MAC层数据包后向该终端设备发送一个响应，也可以通过一个响应可以指示多个MAC层数据包的接收情况。例如，该网络设备可以在响应中指示成功接收的起始MAC层数据包号和终止MAC层数据包号，或者指示成功接收的MAC层数据包号以及分段的起始号和分段的结束号。
该网络设备可以通过物理层或MAC层消息发送该响应。如果该响应是网络设备通过物理层发送的，则该终端设备的MAC实体也可以通过物理层实体获取到该响应。具体地，网络设备可以在物理控制信道或物理共享信道中发送该响应。
假设，该网络设备在成功接收到一个数据包后就向终端设备发送一个响应。在此情况下，如果该网络设备成功接收该N个数据包，则该网络设备会向该终端设备发送N个用于指示成功接收的响应，每个响应对应一个数据包。该终端设备成功接收到该N个响应，并且确定该N个响应均是指示成功接收对应的数据包的响应，则确定该RLC反馈信息为RLC肯定反馈。在此情况下，M等于N。如果该网络设备成功接收该N个数据包中的N1个数 据包，则该网络设备可以向该终端设备发送N1个用于指示成功接收的响应，或者，发送N1个用于指示成功接收的响应和N2个用于指示未成功接收的响应，其中N1与N2的和为N。如果该终端设备确定接收到用于指示未成功接收的响应，或者，确定接收到的成功接收的响应的数目小于发送的数据包的数目，则确定该RLC反馈信息为RLC否定反馈。
408，该MAC实体将该RLC反馈信息发送至该RLC实体。
409，该RLC实体根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU。
具体地，若该RLC实体确定接收到的RLC反馈信息为RLC肯定反馈，则确定该网络设备成功接收到该第一RLC SDU。若该RLC实体确定接收到的RLC反馈信息为RLC否定反馈，则确定该网络设备未成功接收到该第一RLC SDU。
可选的，作为一个实施例，若该RLC实体确定该网络设备未成功接收该第一RLC SDU，那么还可以包括步骤410至步骤414。
410，该MAC实体确定未成功接收的MAC SDU。
具体地，该MAC实体可以通过响应中的用于指示MAC SDU的标识信息确定未成功接收的MAC SDU。
411，该MAC实体对该未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数。
该MAC实体对该未成功接收的MAC SDU进行分段的具体过程与图1图2实施例中MAC实体对MAC SDU进行分段的过程类似，在此就不必赘述。
412，该MAC实体向该网络设备发送该P个重分段MAC SDU。
413，该MAC实体接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数。
414，该MAC实体根据该Q个响应，确定该网络设备是否成功接收该P个重分段MAC SDU。若该MAC实体确定该网络设备成功接收该P个重分段MAC SDU，则向该RLC实体发送RLC肯定反馈；若该MAC实体确定该网络设备未成功接收该P个重分段MAC SDU，则向该RLC实体发送RLC否定反馈。
步骤412至步骤414与图2实施例中的步骤，在203至步骤205类似，此就不必赘述。
可选的，作为另一个实施例，若该RLC实体确定该网络设备未成功接收该第一RLC SDU，那么对未成功接收的MAC SDU进行重分段的工作可以由RLC实体完成。在此情况下，该MAC实体可以通过响应中的用于指示MAC SDU的标识信息确定未成功接收的MAC SDU并通知该RLC实体该未成功接收的MAC SDU。该RLC实体对需要重传的RLC PDU(即未成功接收的MAC SDU)进行重分段，确定重分段的RLC PDU，并通过MAC实体将重分段的RLC PDU发送至该网络设备。
通过上述技术方案，在进行RLC层数据重传的过程中，终端设备无需接收网络设备发送的RLC层反馈信息。因此，终端设备也无需向网络设备发送用于触发网络设备发送RLC层反馈信息的轮询帧。或者，该网络设备也无需启动定时器，并根据定时器确定是否向终端设备发送RLC层反馈信息。上述技术方案节省了信令开销并且提高了反馈效率。此外，终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。
图5是根据本发明实施例提供的另一种传输数据的方法的示意性流程图。
501，网络设备接收终端设备通过数据共享信道发送的多个上行数据包，该多个上行数据包用于携带第一数据，该上行数据包中包括数据量信息。该数据量信息用于指示该第一数据的比特数或数据包个数。
502，该网络设备根据该数据量信息确定是否完整接收第一数据，若确定完整接收该第一数据，则确定向该终端设备发送RLC层的肯定反馈信息，该RLC层的肯定反馈信息用于指示该网络设备成功接收该第一数据。
可选的，若确定未完整接收该第一数据，则向该终端设备发送RLC层的否定反馈信息，该RLC层的否定反馈信息用于指示该网络设备未成功接收该第一数据。
上述技术方案中，网络设备的RLC实体发送RLC层的反馈信息时，在确定成功接收到终端设备发送的第一数据后可以立刻向该终端设备发送RLC层的反馈信息，无需通过轮询请求触发或定时器触发，提高了反馈RLC 层的反馈信息的效率，使得RLC层的反馈信息可以更快地到达终端设备。
可选的，作为一个实施例，该网络设备还可以启动定时器，并在确定定时器超时以及未完整接收该第一数据的情况下，向该终端设备发送该RLC层的否定反馈信息。该定时器的启动时机可以是以下任一时刻：该网络设备的RLC实体创建时、收到不连续的上行数据包时或收到第一个上行数据包时。
本发明实施例还提供一种终端设备，该终端设备能够执行如图1或图2所示的终端设备执行的各个步骤。该终端设备包括：确定单元、发送单元和接收单元。
确定单元，用于确定第一MAC业务数据单元SDU。
该确定单元，还用于对该第一MAC SDU进行分段，确定N个分段MAC SDU，N为大于1的正整数。
发送单元，用于向网络设备发送该N个分段MAC SDU。
接收单元，用于接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个分段MAC SDU，M为小于或等于N的正整数。
该确定单元，还用于根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU。
该终端设备中可以直接根据用于确认是否成功接收分段的MAC SDU的响应确认网络设备是否完整接收该需要发送的数据。因此，该终端设备无需接收RLC层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。该终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
可选的，作为一个实施例，该确定单元，具体用于确定分组数据汇聚协议PDCP协议数据单元PDU为该第一MAC SDU。
可选的，作为另一个实施例，该确定单元，具体用于确定无线链路控制RLC PDU为该第一MAC SDU。
具体地，该确定单元，具体用于若确定该M个响应指示该网络设备成功接收该N个分段MAC SDU，则确定该网络设备成功接收该第一MAC SDU；或者，若确定该M个响应中包括第一响应或确定存在未接收到的响应，则确定该网络设备未接收到该第一MAC SDU，该第一响应用于指示该网络设备未成功接收对应的分段MAC SDU。
进一步，该确定单元，还用于确定未成功接收的分段MAC SDU。该确定单元，还用于对该未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数。该发送单元，还用于向该网络设备发送该P个重分段MAC SDU。该接收单元，还用于接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数。该确定单元，还用于根据该Q个响应，确定该网络设备是否成功接收该第一MAC SDU。
本发明实施例还提供一种终端设备，该终端设备能够执行如图3或图4所示的终端设备执行的各个步骤。该终端设备包括：确定单元、发送单元和接收单元。
确定单元，用于对第一RLC SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数。
该确定单元，还用于获取该N个分段RLC SDU。
该确定单元，还用于根据该N个分段RLC SDU，确定N个MAC SDU。
发送单元，用于向网络设备发送该N个MAC SDU。
接收单元，用于接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个MAC SDU，M为小于或等于N的正整数。
该确定单元，还用于根据该M个响应，生成RLC反馈信息。
该确定单元，还用于根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU。
该终端设备可以直接根据用于确认是否成功接收MAC SDU的响应确认网络设备是否完整接收该需要发送的数据。因此，该终端设备无需接收RLC层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。该终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下， 减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
具体地，该确定单元，具体用于若确定该M个响应指示该网络设备成功接收该N个MAC SDU，则确定该RLC反馈信息为RLC肯定反馈；或者，若确定该N个响应中包括第一响应或确定存在未接收到的响应，则确定该RLC反馈信息为RLC否定反馈，该第一响应用于指示该网络设备未成功接收对应的MAC SDU。
具体地，该确定单元，具体用于若确定该RLC反馈信息为RLC肯定反馈，则确定该网络设备成功接收该第一RLC SDU；或者，若确定该RLC反馈信息为该RLC否定反馈，则确定该网络设备未成功接收该第一RLC SDU。
进一步，该确定单元，还用于确定未成功接收的MAC SDU。该确定单元，还用于对该未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数。该发送单元，还用于向该网络设备发送该P个重分段MAC SDU。该接收单元，还用于接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数。该确定单元，还用于根据该Q个响应，确定该网络设备是否成功接收该P个重分段MAC SDU。
本发明实施例还提供一种网络设备，该网络设备能够执行如图5所示的方法中网络设备执行的各个步骤。该网络设备包括接收单元、发送单元和确定单元。
该接收单元，用于接收终端设备通过数据共享信道发送的多个上行数据包，该多个上行数据包用于携带第一数据，该上行数据包中包括数据量信息。该数据量信息用于指示该第一数据的比特数或数据包个数。
该确定单元，用于根据该数据量信息确定是否完整接收第一数据。
该发送单元，用于在该确定单元确定完整接收该第一数据的情况下，向该终端设备发送RLC层的肯定反馈信息，该RLC层的肯定反馈信息用于指示该网络设备成功接收该第一数据。
该发送单元，还用于在该确定单元确定未完整接收该第一数据，则向该终端设备发送RLC层的否定反馈信息，该RLC层的否定反馈信息用于指示 该网络设备未成功接收该第一数据。
上述技术方案中，网络设备的RLC实体发送RLC层的反馈信息时，在确定成功接收到终端设备发送的第一数据后可以立刻向该终端设备发送RLC层的反馈信息，无需通过轮询请求触发或定时器触发，提高了反馈RLC层的反馈信息的效率，使得RLC层的反馈信息可以更快地到达终端设备。
可选的，作为一个实施例，该确定单元，还用于确定定时器。该发送单元，还可用于在确定定时器超时以及该确定单元确定未完整接收该第一数据的情况下，向该终端设备发送该RLC层的否定反馈信息。该定时器的启动时机可以是以下任一时刻：该网络设备的RLC实体创建时、收到不连续的上行数据包时或收到第一个上行数据包时。
图6是根据本发明实施例提供的终端设备的结构框图。如图6所示，终端设备600包括处理器601，存储器602，收发电路603。
终端设备600中的各个组件通过总线系统604耦合在一起，其中总线系统604除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图6中将各种总线都标为总线系统604。
上述本发明实施例揭示的方法可以应用于处理器601中，或者由处理器601实现。处理器601可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器601中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器601可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器602，存储器602，用于存储执行如图1或图2中由终端设备执行的步骤的指令。处理器601读取并运行存储器602中的指令，结合其硬件完成上述方法的步骤。
具体地，处理器601中运行MAC实体，该MAC实体获取第一MAC SDU。该MAC实体对该第一MAC SDU进行分段，确定N个分段MAC SDU，N为大于1的正整数。
收发电路603，用于向网络设备发送该N个分段MAC SDU并接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个分段MAC SDU，M为小于或等于N的正整数。
该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU。
终端设备600中的MAC实体可以负责对需要发送的数据进行分段，并且可以由MAC实体直接根据用于确认是否成功接收分段的MAC SDU的响应确认网络设备是否完整接收该需要发送的数据。因此，终端设备无需接收RLC层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
可选的，作为一个实施例，处理器601中运行PDCP实体，该MAC实体接收该PDCP实体发送的PDCP PDU并确定该PDCP PDU为该第一MAC SDU。
可选的，作为另一个实施例，处理器601中运行RLC实体，该MAC实体接收该RLC实体发送的RLC PDU并确定该RLC PDU为该第一MAC SDU。
具体地，该MAC实体根据该M个响应，确定该网络设备是否成功接收该第一MAC SDU，包括：若该MAC实体确定该M个响应指示该网络设备成功接收该N个分段MAC SDU，则确定该网络设备成功接收该第一MAC SDU；或者，若该MAC实体确定该M个响应中包括第一响应或确定存在未接收到的响应，则确定该网络设备未接收到该第一MAC SDU，该第一响应用于指示该网络设备未成功接收对应的分段MAC SDU。
进一步，在该MAC实体确定该网络设备未接收到该第一MAC SDU的 情况下，该MAC实体确定未成功接收的分段MAC SDU。该MAC实体对该未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数。收发电路603，还用于向该网络设备发送该P个重分段MAC SDU并接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数。该MAC实体根据该Q个响应，确定该网络设备是否成功接收该第一MAC SDU。
图7是根据本发明实施例提供的终端设备的结构框图。如图7所示，终端设备700包括处理器701，存储器702，收发电路703。
终端设备700中的各个组件通过总线系统704耦合在一起，其中总线系统704除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图7中将各种总线都标为总线系统704。
上述本发明实施例揭示的方法可以应用于处理器701中，或者由处理器701实现。处理器701可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器701中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器701可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器702，存储器702，用于存储执行如图1或图2中由终端设备执行的步骤的指令。处理器701读取并运行存储器702中的指令，结合其硬件完成上述方法的步骤。
具体地，处理器701中运行RLC实体和MAC实体。
该RLC实体对第一RLC SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数。
该MAC实体获取该N个分段RLC SDU。
该MAC实体根据该N个分段RLC SDU，确定N个MAC SDU。
收发电路703，用于向网络设备发送该N个MAC SDU并接收该网络设备发送的M个响应，其中该M个响应用于指示该网络设备是否成功接收该N个MAC SDU，M为小于或等于N的正整数。
该MAC实体根据该M个响应，生成RLC反馈信息。
该MAC实体将该RLC反馈信息发送至该RLC实体。
该RLC实体根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU。
终端设备700中的MAC实体可以直接根据用于确认是否成功接收MAC SDU的响应确认网络设备是否完整接收该需要发送的数据，并通过RLC反馈信息通知RLC实体。因此，终端设备无需接收RLC层消息确定网络设备是否完整接收终端设备发送的数据，减少了终端设备和网络设备之间的信令交互。终端设备也无需向网络设备发送用于反馈是否成功接收该RLC层消息的响应。因此，在基于竞争的上行传输的情况下，减少终端设备竞争使用上行信道的次数，节省了上行信道资源。同时，网络设备也无需通过定时器触发向终端设备反馈RLC层消息。因此，缩短了确定数据传输是否成功的时间。终端设备也不需要向网络设备发送轮询请求以确认是否成功接收数据。
具体地，该MAC实体根据该M个响应，生成RLC反馈信息，包括：若该MAC实体确定该M个响应指示该网络设备成功接收该N个MAC SDU，则确定该RLC反馈信息为RLC肯定反馈；或者，若该MAC实体确定该N个响应中包括第一响应或确定存在未接收到的响应，则确定该RLC反馈信息为RLC否定反馈，该第一响应用于指示该网络设备未成功接收对应的MAC SDU。
具体地，该RLC实体根据该RLC反馈信息，确定该网络设备是否成功接收该第一RLC SDU，包括：若该RLC实体确定该RLC反馈信息为RLC肯定反馈，则确定该网络设备成功接收该第一RLC SDU；或者，若该RLC实体确定该RLC反馈信息为该RLC否定反馈，则确定该网络设备未成功接收该第一RLC SDU。
进一步，在确定该网络设备未成功接收该第一RLC SDU的情况下，该 MAC实体确定未成功接收的MAC SDU。该MAC实体对该未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数。收发电路703，还用于向该网络设备发送该P个重分段MAC SDU并接收该网络设备发送的Q个响应，其中该Q个响应用于指示该网络设备是否成功接收该P个重分段MAC SDU，Q为小于或等于P的正整数。该MAC实体根据该Q个响应，确定该网络设备是否成功接收该P个重分段MAC SDU。
图8是根据本发明实施例提供的网络设备的结构框图。如图8所示，网络设备800包括处理器801，存储器802，收发电路803。
网络设备800中的各个组件通过总线系统804耦合在一起，其中总线系统804除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图8中将各种总线都标为总线系统804。
上述本发明实施例揭示的方法可以应用于处理器801中，或者由处理器801实现。处理器801可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器801中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器801可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器802，存储器802，用于存储执行如图1或图2中由终端设备执行的步骤的指令。处理器801读取并运行存储器802中的指令，结合其硬件完成上述方法的步骤。
收发电路803，用于接收终端设备通过数据共享信道发送的多个上行数据包，该多个上行数据包用于携带第一数据，该上行数据包中包括数据量信息。该数据量信息用于指示该第一数据的比特数或数据包个数。
处理器801，用于根据该数据量信息确定是否完整接收第一数据。
收发电路803，用于在处理器801确定完整接收该第一数据的情况下，向该终端设备发送RLC层的肯定反馈信息，该RLC层的肯定反馈信息用于指示该网络设备成功接收该第一数据。
收发电路803，还用于在处理器801确定未完整接收该第一数据，则向该终端设备发送RLC层的否定反馈信息，该RLC层的否定反馈信息用于指示该网络设备未成功接收该第一数据。
上述技术方案中，网络设备的RLC实体发送RLC层的反馈信息时，在确定成功接收到终端设备发送的第一数据后可以立刻向该终端设备发送RLC层的反馈信息，无需通过轮询请求触发或定时器触发，提高了反馈RLC层的反馈信息的效率，使得RLC层的反馈信息可以更快地到达终端设备。
可选的，作为一个实施例，处理器801，还用于确定定时器。收发电路803，还可用于在确定定时器超时以及处理器801确定未完整接收该第一数据的情况下，向该终端设备发送该RLC层的否定反馈信息。该定时器的启动时机可以是以下任一时刻：该网络设备的RLC实体创建时、收到不连续的上行数据包时或收到第一个上行数据包时。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作 为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内，因此本发明的保护范围应以权利要求的保护范围为准。

Claims (27)

  1. 一种传输数据的方法，其特征在于，所述方法包括：
    终端设备的媒体接入控制MAC实体获取第一MAC业务数据单元SDU；
    所述MAC实体对所述第一MAC SDU进行分段，确定N个分段MAC SDU，N为大于1的正整数；
    所述MAC实体向网络设备发送所述N个分段MAC SDU；
    所述MAC实体接收所述网络设备发送的M个响应，其中所述M个响应用于指示所述网络设备是否成功接收所述N个分段MAC SDU，M为小于或等于N的正整数；
    所述MAC实体根据所述M个响应，确定所述网络设备是否成功接收所述第一MAC SDU。
  2. 如权利要求1所述的方法，其特征在于，所述终端设备的媒体接入控制MAC实体获取第一MAC业务数据单元SDU包括：
    所述MAC实体接收所述终端设备的分组数据汇聚协议PDCP实体发送的PDCP协议数据单元PDU并确定所述PDCP PDU为所述第一MAC SDU。
  3. 如权利要求1所述的方法，其特征在于，所述终端设备的媒体接入控制MAC实体获取第一MAC业务数据单元SDU包括：
    所述MAC实体接收所述终端设备的无线链路控制RLC实体发送的RLC PDU并确定所述RLC PDU为所述第一MAC SDU。
  4. 如权利要求1至3中任一项所述的方法，其特征在于，所述MAC实体根据所述M个响应，确定所述网络设备是否成功接收所述第一MAC SDU，包括：
    若所述MAC实体确定所述M个响应指示所述网络设备成功接收所述N个分段MAC SDU，则确定所述网络设备成功接收所述第一MAC SDU；或者
    若所述MAC实体确定所述M个响应中包括第一响应或确定存在未接收到的响应，则确定所述网络设备未接收到所述第一MAC SDU，所述第一响应用于指示所述网络设备未成功接收对应的分段MAC SDU。
  5. 如权利要求1至4中任一项所述的方法，其特征在于，在所述MAC实体确定所述网络设备未接收到所述第一MAC SDU的情况下，所述方法还包括：
    所述MAC实体确定未成功接收的分段MAC SDU；
    所述MAC实体对所述未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；
    所述MAC实体向所述网络设备发送所述P个重分段MAC SDU；
    所述MAC实体接收所述网络设备发送的Q个响应，其中所述Q个响应用于指示所述网络设备是否成功接收所述P个重分段MAC SDU，Q为小于或等于P的正整数；
    所述MAC实体根据所述Q个响应，确定所述网络设备是否成功接收所述第一MAC SDU。
  6. 一种传输数据的方法，其特征在于，所述方法包括：
    终端设备的无线链路控制RLC实体对第一RLC业务数据单元SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数；
    所述终端设备的媒体接入控制MAC实体获取所述N个分段RLC SDU；
    所述MAC实体根据所述N个分段RLC SDU，确定N个MAC SDU并向网络设备发送所述N个MAC SDU；
    所述MAC实体接收所述网络设备发送的M个响应，其中所述M个响应用于指示所述网络设备是否成功接收所述N个MAC SDU，M为小于或等于N的正整数；
    所述MAC实体根据所述M个响应，生成RLC反馈信息；
    所述MAC实体将所述RLC反馈信息发送至所述RLC实体；
    所述RLC实体根据所述RLC反馈信息，确定所述网络设备是否成功接收所述第一RLC SDU。
  7. 如权利要求6所述的方法，其特征在于，所述MAC实体根据所述M个响应，生成RLC反馈信息，包括：
    若所述MAC实体确定所述M个响应指示所述网络设备成功接收所述N 个MAC SDU，则确定所述RLC反馈信息为RLC肯定反馈；或者，
    若所述MAC实体确定所述N个响应中包括第一响应或确定存在未接收到的响应，则确定所述RLC反馈信息为RLC否定反馈，所述第一响应用于指示所述网络设备未成功接收对应的MAC SDU。
  8. 如权利要求7所述的方法，其特征在于，所述RLC实体根据所述RLC反馈信息，确定所述网络设备是否成功接收所述第一RLC SDU，包括：
    若所述RLC实体确定所述RLC反馈信息为RLC肯定反馈，则确定所述网络设备成功接收所述第一RLC SDU；或者，
    若所述RLC实体确定所述RLC反馈信息为所述RLC否定反馈，则确定所述网络设备未成功接收所述第一RLC SDU。
  9. 如权利要求6至8中任一项所述的方法，其特征在于，在确定所述网络设备未成功接收所述第一RLC SDU的情况下，所述方法还包括：
    所述MAC实体确定未成功接收的MAC SDU；
    所述MAC实体对所述未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；
    所述MAC实体向所述网络设备发送所述P个重分段MAC SDU；
    所述MAC实体接收所述网络设备发送的Q个响应，其中所述Q个响应用于指示所述网络设备是否成功接收所述P个重分段MAC SDU，Q为小于或等于P的正整数；
    所述MAC实体根据所述Q个响应，确定所述网络设备是否成功接收所述P个重分段MAC SDU。
  10. 一种终端设备，其特征在于，所述终端设备包括：
    确定单元，用于确定第一媒体接入控制MAC业务数据单元SDU；
    所述确定单元，还用于对所述第一MAC SDU进行分段，确定N个分段MAC SDU，N为大于1的正整数；
    发送单元，用于向网络设备发送所述N个分段MAC SDU；
    接收单元，用于接收所述网络设备发送的M个响应，其中所述M个响应用于指示所述网络设备是否成功接收所述N个分段MAC SDU，M为小于 或等于N的正整数；
    所述确定单元，还用于根据所述M个响应，确定所述网络设备是否成功接收所述第一MAC SDU。
  11. 如权利要求10所述的终端设备，其特征在于，所述确定单元，具体用于确定分组数据汇聚协议PDCP协议数据单元PDU为所述第一MAC SDU。
  12. 如权利要求10所述的终端设备，其特征在于，所述确定单元，具体用于确定无线链路控制RLC PDU为所述第一MAC SDU。
  13. 如权利要求10至12中任一项所述的终端设备，其特征在于，所述确定单元，具体用于若确定所述M个响应指示所述网络设备成功接收所述N个分段MAC SDU，则确定所述网络设备成功接收所述第一MAC SDU；或者
    若确定所述M个响应中包括第一响应或确定存在未接收到的响应，则确定所述网络设备未接收到所述第一MAC SDU，所述第一响应用于指示所述网络设备未成功接收对应的分段MAC SDU。
  14. 如权利要求10至12中任一项所述的终端设备，其特征在于，
    所述确定单元，还用于确定未成功接收的分段MAC SDU；
    所述确定单元，还用于对所述未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；
    所述发送单元，还用于向所述网络设备发送所述P个重分段MAC SDU；
    所述接收单元，还用于接收所述网络设备发送的Q个响应，其中所述Q个响应用于指示所述网络设备是否成功接收所述P个重分段MAC SDU，Q为小于或等于P的正整数；
    所述确定单元，还用于根据所述Q个响应，确定所述网络设备是否成功接收所述第一MAC SDU。
  15. 一种终端设备，其特征在于，所述终端设备包括：
    确定单元，用于对第一无线链路控制RLC业务数据单元SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数；
    所述确定单元，还用于获取所述N个分段RLC SDU；
    所述确定单元，还用于根据所述N个分段RLC SDU，确定N个媒体接入控制MAC SDU；
    发送单元，用于向网络设备发送所述N个MAC SDU；
    接收单元，用于接收所述网络设备发送的M个响应，其中所述M个响应用于指示所述网络设备是否成功接收所述N个MAC SDU，M为小于或等于N的正整数；
    所述确定单元，还用于根据所述M个响应，生成RLC反馈信息；
    所述确定单元，还用于根据所述RLC反馈信息，确定所述网络设备是否成功接收所述第一RLC SDU。
  16. 如权利要求15所述的终端设备，其特征在于，所述确定单元，具体用于若确定所述M个响应指示所述网络设备成功接收所述N个MAC SDU，则确定所述RLC反馈信息为RLC肯定反馈；或者，
    若确定所述N个响应中包括第一响应或确定存在未接收到的响应，则确定所述RLC反馈信息为RLC否定反馈，所述第一响应用于指示所述网络设备未成功接收对应的MAC SDU。
  17. 如权利要求16所述的终端设备，其特征在于，所述确定单元，具体用于若确定所述RLC反馈信息为RLC肯定反馈，则确定所述网络设备成功接收所述第一RLC SDU；或者，
    若确定所述RLC反馈信息为所述RLC否定反馈，则确定所述网络设备未成功接收所述第一RLC SDU。
  18. 如权利要求15至17中任一项所述的终端设备，其特征在于，所述确定单元，还用于确定未成功接收的MAC SDU；
    所述确定单元，还用于对所述未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；
    所述发送单元，还用于向所述网络设备发送所述P个重分段MAC SDU；
    所述接收单元，还用于接收所述网络设备发送的Q个响应，其中所述Q个响应用于指示所述网络设备是否成功接收所述P个重分段MAC SDU，Q为小于或等于P的正整数；
    所述确定单元，还用于根据所述Q个响应，确定所述网络设备是否成功接收所述P个重分段MAC SDU。
  19. 一种终端设备，其特征在于，所述终端设备包括：处理器、存储用于由所述处理器执行的程序的存储器以及收发电路；
    所述处理器，用于运行媒体接入控制MAC实体，所述MAC实体获取第一MAC业务数据单元SDU；
    所述MAC实体对所述第一MAC SDU进行分段，确定N个分段MAC SDU，N为大于1的正整数；
    所述收发电路，用于向网络设备发送所述N个分段MAC SDU；
    所述收发电路，还用于接收所述网络设备发送的M个响应，其中所述M个响应用于指示所述网络设备是否成功接收所述N个分段MAC SDU，M为小于或等于N的正整数；
    所述MAC实体根据所述M个响应，确定所述网络设备是否成功接收所述第一MAC SDU。
  20. 如权利要求19所述的终端设备，其特征在于，所述处理器，还用于运行分组数据汇聚协议PDCP实体，所述MAC实体接收所述PDCP实体发送的PDCP协议数据单元PDU并确定所述PDCP PDU为所述第一MAC SDU。
  21. 如权利要求19所述的终端设备，其特征在于，所述处理器，还用于运行无线链路控制RLC实体，所述MAC实体接收所述RLC实体发送的RLC PDU并确定所述RLC PDU为所述第一MAC SDU。
  22. 如权利要求19至21中任一项所述的终端设备，其特征在于，所述MAC实体根据所述M个响应，确定所述网络设备是否成功接收所述第一MAC SDU，包括：
    若所述MAC实体确定所述M个响应指示所述网络设备成功接收所述N个分段MAC SDU，则确定所述网络设备成功接收所述第一MAC SDU；或者
    若所述MAC实体确定所述M个响应中包括第一响应或确定存在未接收到的响应，则确定所述网络设备未接收到所述第一MAC SDU，所述第一响应用于指示所述网络设备未成功接收对应的分段MAC SDU。
  23. 如权利要求19至22中任一项所述的终端设备，其特征在于，在所述MAC实体确定所述网络设备未接收到所述第一MAC SDU的情况下，所述MAC实体确定未成功接收的分段MAC SDU；
    所述MAC实体对所述未成功接收的分段MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；
    所述收发电路，还用于向所述网络设备发送所述P个重分段MAC SDU；
    所述收发电路，还用于接收所述网络设备发送的Q个响应，其中所述Q个响应用于指示所述网络设备是否成功接收所述P个重分段MAC SDU，Q为小于或等于P的正整数；
    所述MAC实体根据所述Q个响应，确定所述网络设备是否成功接收所述第一MAC SDU。
  24. 一种终端设备，其特征在于，所述终端设备包括：处理器、存储用于由所述处理器执行的程序的存储器以及收发电路；
    所述处理器，用于运行无线链路控制RLC实体和媒体接入控制MAC实体，所述RLC实体对第一业务数据单元RLC SDU进行分段，确定N个分段RLC SDU，N为大于1的正整数；
    所述MAC实体获取所述N个分段RLC SDU；
    所述MAC实体根据所述N个分段RLC SDU，确定N个MAC SDU；
    所述收发电路，用于向网络设备发送所述N个MAC SDU；
    所述收发电路，还用于所述网络设备发送的M个响应，其中所述M个响应用于指示所述网络设备是否成功接收所述N个MAC SDU，M为小于或等于N的正整数；
    所述MAC实体根据所述M个响应，生成RLC反馈信息；
    所述MAC实体将所述RLC反馈信息发送至所述RLC实体；
    所述RLC实体根据所述RLC反馈信息，确定所述网络设备是否成功接收所述第一RLC SDU。
  25. 如权利要求24所述的终端设备，其特征在于，所述MAC实体根据所述M个响应，生成RLC反馈信息，包括：
    若所述MAC实体确定所述M个响应指示所述网络设备成功接收所述N个MAC SDU，则确定所述RLC反馈信息为RLC肯定反馈；或者，
    若所述MAC实体确定所述N个响应中包括第一响应或确定存在未接收到的响应，则确定所述RLC反馈信息为RLC否定反馈，所述第一响应用于指示所述网络设备未成功接收对应的MAC SDU。
  26. 如权利要求25所述的终端设备，其特征在于，所述RLC实体根据所述RLC反馈信息，确定所述网络设备是否成功接收所述第一RLC SDU，包括：
    若所述RLC实体确定所述RLC反馈信息为RLC肯定反馈，则确定所述网络设备成功接收所述第一RLC SDU；或者，
    若所述RLC实体确定所述RLC反馈信息为所述RLC否定反馈，则确定所述网络设备未成功接收所述第一RLC SDU。
  27. 如权利要求24至26中任一项所述的终端设备，其特征在于，在确定所述网络设备未成功接收所述第一RLC SDU的情况下，
    所述MAC实体确定未成功接收的MAC SDU；
    所述MAC实体对所述未成功接收的MAC SDU进行分段，确定P个重分段MAC SDU，P为大于1的正整数；
    所述收发电路，还用于向所述网络设备发送所述P个重分段MAC SDU；
    所述收发电路，还用于接收所述网络设备发送的Q个响应，其中所述Q个响应用于指示所述网络设备是否成功接收所述P个重分段MAC SDU，Q为小于或等于P的正整数；
    所述MAC实体根据所述Q个响应，确定所述网络设备是否成功接收所述P个重分段MAC SDU。
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