WO2019184699A1 - 数据发送方法、接收方法及用户设备 - Google Patents

数据发送方法、接收方法及用户设备 Download PDF

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Publication number
WO2019184699A1
WO2019184699A1 PCT/CN2019/077793 CN2019077793W WO2019184699A1 WO 2019184699 A1 WO2019184699 A1 WO 2019184699A1 CN 2019077793 W CN2019077793 W CN 2019077793W WO 2019184699 A1 WO2019184699 A1 WO 2019184699A1
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WO
WIPO (PCT)
Prior art keywords
mac
pdu
sdu
sub
user equipment
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PCT/CN2019/077793
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English (en)
French (fr)
Inventor
郑倩
杨晓东
张艳霞
Original Assignee
维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2019184699A1 publication Critical patent/WO2019184699A1/zh
Priority to US17/035,502 priority Critical patent/US11622296B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
    • 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
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a data transmitting method, a receiving method, and a user equipment.
  • a sub-link user equipment introduces a carrier aggregation (PC5 carrier aggregation) function in the wireless air interface PC5, and the UE can perform packet duplication on two PC5 carriers. Thereby further improving data reliability.
  • the Sidelink UE performs data replication at the Packet Data Convergence Protocol (PDCP) layer, and the duplicated Sidelink PDCP Protocol Data Unit (PDU) is delivered to two different radio link controls (Radio Link).
  • Control, RLC Radio Link controls
  • different RLC entities correspond to different logical channels
  • different logical channels have different logical channel identities (LCIDs).
  • MAC Medium Access Control
  • MAC Medium Access Control
  • MAC Medium Access Control
  • MAC Medium Access Control
  • MAC Medium Access Control
  • MAC Medium Access Control
  • Figure 1 shows the sub-link data replication function.
  • the two LCIDs (LCID1, LCID2) used for the packet replication function are a fixed one-to-one mapping.
  • One-to-one mapping relationship such as an LCID1 (taken from the already defined (Legacy) LCID: 1, 2, ..., 10) associated with an LCID2 (taken from the reserved LCID: 11, 12 ,...,twenty one).
  • a MAC PDU received by the Sidelink UE when a MAC PDU received by the Sidelink UE includes a reserved or invalid LCID value, the UE will discard the received MAC PDU.
  • a service data packet of a part of the R15 UE needs to be received by the R14 UE.
  • the LCID2 for duplication (as shown in FIG. 1) is R1 UE, and since the R14 UE does not support Sidelink packet duplication, it belongs to the reserved LCID, so when the R14 UE detects the MAC PDU, The LCID2 is included.
  • the R14 UE discards the entire MAC PDU, resulting in a packet loss of R14 UE data reception performance.
  • the technical problem to be solved by the present disclosure is to provide a data transmitting method, a receiving method, and a user equipment, which can ensure data receiving performance of the user equipment.
  • an embodiment of the present disclosure provides a data receiving method, which is applied to a user equipment, where the method includes:
  • the service data unit SDU or the sub-PDU corresponding to the reserved LCID value in the MAC PDU is discarded.
  • an embodiment of the present disclosure provides a data sending method, which is applied to a user equipment, where the method includes:
  • the MAC SDU When the MAC SDU is associated with the reserved LCID value, the MAC SDU is placed in the first MAC protocol data unit PDU, and when the MAC SDU is not associated with the reserved LCID value, the MAC SDU is placed in the second MAC PDU;
  • an embodiment of the present disclosure provides a user equipment, including:
  • a determining module configured to determine whether the media access control MAC protocol data unit PDU received by the user equipment includes a reserved logical channel identifier LCID value
  • a discarding module configured to discard a service data unit SDU or a sub-PDU corresponding to the reserved LCID value in the MAC PDU when the MAC PDU includes a reserved LCID value.
  • an embodiment of the present disclosure provides a user equipment, including:
  • a determining module configured to determine whether the media access control MAC service data unit SDU is associated with the reserved logical channel identifier LCID value
  • the encapsulating module is configured to: when the MAC SDU is associated with the reserved LCID value, placing the MAC SDU in the first MAC protocol data unit PDU, and placing the MAC SDU in the second MAC PDU when the MAC SDU is not associated with the reserved LCID value ;
  • a sending module configured to separately send the first MAC PDU and the second MAC PDU.
  • an embodiment of the present disclosure provides a user equipment, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor The steps in the data receiving method or the steps in the data transmitting method as described above.
  • an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, where the computer program is executed by a processor to implement the data receiving method as described above. The steps or steps in the data transmission method as described above are implemented.
  • the SDU or the sub-PDU corresponding to the reserved LCID value in the MAC PDU is discarded, instead of discarding the entire MAC PDU, so that the user equipment data is not caused.
  • the reception performance is degraded, thereby ensuring the data reception performance of the user equipment.
  • the MAC SDU associated with the reserved LCID value and the MAC SDU that is not associated with the reserved LCID value are respectively sent in two MAC PDUs, which can prevent the user equipment of the opposite end from receiving the data.
  • the MAC SDU that is not associated with the reserved LCID value is also discarded, which can further ensure the data receiving performance of the user equipment.
  • the data packet receiving performance of the peer user equipment is not affected, thereby ensuring backward compatibility and performance of the communication system.
  • FIG. 1 is a schematic diagram of a secondary link data replication function
  • FIG. 2 is a schematic flowchart of a data receiving method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart diagram of a data sending method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of discarding a MAC SDU and a MAC sub-header according to a specific embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of discarding a MAC sub PDU according to a second embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of separately transmitting a MAC SDU according to a third embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a user equipment according to another embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a data sending method, a receiving method, and a user equipment, which can ensure data receiving performance of a user equipment.
  • An embodiment of the present disclosure provides a data receiving method, which is applied to a user equipment. As shown in FIG. 2, the method includes:
  • Step 101 Determine whether the MAC PDU received by the user equipment includes a reserved LCID value.
  • Step 102 When the MAC PDU includes a reserved LCID value, discard a Service Data Unit (SDU) or a sub-PDU corresponding to the reserved LCID value in the MAC PDU.
  • SDU Service Data Unit
  • the SDU or the sub-PDU corresponding to the reserved LCID value in the MAC PDU is discarded, instead of discarding the entire MAC PDU, thereby not causing the user equipment.
  • the data reception performance is degraded, thereby ensuring the data reception performance of the user equipment.
  • the user equipment activates the data packet replication function to send the service data packet, the data packet receiving performance of the peer user equipment is not affected, thereby ensuring backward compatibility and performance of the communication system.
  • the MAC PDU includes a MAC header and at least one SDU
  • the MAC header includes multiple MAC sub-headers, wherein one sub-header identifies a secondary link shared channel (Sidelink Shared Channel) , SL-SCH), each of the remaining sub-headers corresponding to each SDU, the discarding the SDU corresponding to the reserved LCID value in the MAC PDU includes:
  • the MAC sub-header containing the reserved LCID value and its corresponding SDU are discarded.
  • the MAC PDU includes at least one sub-PDU (subPDU), the sub-PDU includes a MAC sub-header identifier SL-SCH or includes a MAC sub-header and an SDU, and the MAC is discarded.
  • the sub-PDU corresponding to the reserved LCID value in the PDU includes:
  • the method further includes:
  • the embodiment of the present disclosure further provides a data sending method, which is applied to a user equipment. As shown in FIG. 3, the method includes:
  • Step 201 Determine whether the MAC SDU is associated with the reserved LCID value.
  • Step 202 When the MAC SDU is associated with the reserved LCID value, the MAC SDU is placed in the first MAC PDU, and when the MAC SDU is not associated with the reserved LCID value, the MAC SDU is placed in the second MAC PDU.
  • Step 203 Send the first MAC PDU and the second MAC PDU respectively.
  • the MAC SDU associated with the reserved LCID value and the MAC SDU that is not associated with the reserved LCID value are respectively sent in two MAC PDUs, which can prevent the user equipment of the opposite end from receiving.
  • the MAC PDU with the reserved LCID value is included, the MAC SDU that is not associated with the reserved LCID value is also discarded, which can further ensure the data receiving performance of the user equipment.
  • the method specifically includes:
  • the MAC subheader (sub-header) including the reserved LCID value and its corresponding SDU are assembled into a first MAC PDU, and the MAC subheader that does not include the reserved LCID value (ie, the MAC sub containing the LCID value already defined) Header) and its corresponding SDU are assembled into a second MAC PDU;
  • the first MAC PDU and the second MAC PDU are sent via different hybrid automatic repeat request HARQ entities.
  • the foregoing data transmission method and data receiving method in this embodiment are applicable not only to the secondary link user equipment in the Long Term Evolution (LTE) system, but also to the secondary link in the New Radio (NR) system.
  • MAC layer data processing of the user equipment are applicable not only to the secondary link user equipment in the Long Term Evolution (LTE) system, but also to the secondary link in the New Radio (NR) system.
  • the receiving behavior of the Sidelink user equipment is enhanced, and the Sidelink user equipment receives the MAC PDU as shown in FIG. 4.
  • the MAC PDU includes a MAC header (header) and multiple MAC SDUs.
  • the MAC PDU further includes padding. Part of (padding) for MAC PDU length byte alignment.
  • the MAC header includes a plurality of MAC sub-headers, wherein one sub-header identifies the SL-SCH, and each of the remaining sub-headers corresponds to each MAC SDU.
  • the MAC header Also included is the padding sub-header.
  • the Sidelink user equipment when the Sidelink user equipment receives the MAC PDU as shown in FIG. 4, it first determines whether the MAC PDU includes the reserved LCID value; when the MAC PDU includes the reserved LCID value, the Sidelink user equipment discards the pre-included One or more MAC sub-headers with LCID values and corresponding one or more MAC SDUs. In the example shown in Figure 4, the Sidelink user equipment discards the slashed MAC sub-header and MAC SDU.
  • the Sidelink user equipment receives the MAC PDU as shown in FIG. 5.
  • the MAC PDU includes at least two sub-PDUs (subPDUs), and one sub-PDU includes only sub-headers for identifying the SL- SCH, other subPDUs include a MAC sub-header and an SDU.
  • the MAC PDU also includes a padding portion for MAC PDU or MAC sub PDU length byte alignment.
  • the Sidelink user equipment when receiving the MAC PDU as shown in FIG. 5, the Sidelink user equipment first determines whether the MAC subPDU includes the reserved LCID value; when the MAC subPDU includes the reserved LCID value, the Sidelink user equipment discards the reserved LCID value. The sub-PDU where the MAC sub-header is located and the remaining one or more MAC subPDUs. In the example shown in FIG. 5, the Sidelink user equipment discards the slashed MAC subPDU and the remaining multiple MAC sub PDUs.
  • the sending behavior of the Sidelink user equipment is enhanced, and the MAC SDU including the reserved LCID for duplication and the MAC SDU not including the reserved LCID for duplication are respectively sent in two MAC PDUs.
  • the UE when the Sidelink UE activates the packet duplication function, the UE will include one or more MAC sub-headers (ie, shaded portions in FIG. 6) for the reserved LCID value for duplication and a corresponding one.
  • the MAC PDU also includes a padding portion for MAC PDU length byte alignment.
  • the embodiment of the present disclosure further provides a user equipment, as shown in FIG. 7, including:
  • the determining module 31 is configured to determine whether the MAC PDU received by the user equipment includes a reserved LCID value
  • the discarding module 32 is configured to discard an SDU or a sub-PDU corresponding to the reserved LCID value in the MAC PDU when the MAC PDU includes a reserved LCID value.
  • the SDU or the sub-PDU corresponding to the reserved LCID value in the MAC PDU is discarded, instead of discarding the entire MAC PDU, thereby not causing the user equipment.
  • the data reception performance is degraded, thereby ensuring the data reception performance of the user equipment.
  • the user equipment activates the data packet replication function to send the service data packet, the data packet receiving performance of the peer user equipment is not affected, thereby ensuring backward compatibility and performance of the communication system.
  • the MAC PDU includes a MAC header and at least one SDU
  • the MAC header includes multiple MAC subheaders, wherein one sub-header identifies a secondary link shared channel, and each remaining sub-header
  • the discarding module 32 is specifically configured to discard the MAC sub-header including the reserved LCID value and its corresponding SDU.
  • the MAC PDU includes at least one sub-PDU
  • the sub-PDU includes a MAC sub-header identifier SL-SCH or includes a MAC sub-header and an SDU
  • the discarding module 32 is specifically configured to discard the pre-containing The subPDU where the MAC sub-header of the LCID value is located.
  • the discarding module 32 is further configured to discard the remaining subPDUs after the sub PDU in the MAC PDU.
  • the embodiment of the present disclosure further provides a user equipment, as shown in FIG. 8, including:
  • the determining module 41 is configured to determine whether the MAC SDU is associated with the reserved LCID value
  • the encapsulating module 42 is configured to: when the MAC SDU is associated with the reserved LCID value, placing the MAC SDU in the first MAC PDU, and placing the MAC SDU in the second MAC PDU when the MAC SDU is not associated with the reserved LCID value;
  • the sending module 43 is configured to separately send the first MAC PDU and the second MAC PDU.
  • the MAC SDU associated with the reserved LCID value and the MAC SDU that is not associated with the reserved LCID value are respectively sent in two MAC PDUs, which can prevent the user equipment of the opposite end from receiving.
  • the MAC PDU with the reserved LCID value is included, the MAC SDU that is not associated with the reserved LCID value is also discarded, which can further ensure the data receiving performance of the user equipment.
  • the determining module 41 is specifically configured to determine, after the user equipment activates the data packet replication function, whether the MAC SDU is associated with the reserved LCID value;
  • the encapsulating module 42 is specifically configured to assemble a MAC sub-header including a reserved LCID value and a corresponding SDU into a first MAC PDU, and assemble a MAC sub-head that does not include a reserved LCID value and a corresponding SDU into a second MAC PDU;
  • the sending module 43 is specifically configured to send the first MAC PDU and the second MAC PDU by using different HARQ entities.
  • Embodiments of the present disclosure also provide a user equipment, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor to implement The steps in the data receiving method or the steps in the data transmitting method as described above.
  • FIG. 9 is a schematic diagram of a hardware structure of a user equipment that implements various embodiments of the present disclosure.
  • the user equipment 600 includes, but is not limited to, a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and processing.
  • Device 610, and power supply 611 and other components It will be understood by those skilled in the art that the user equipment structure shown in FIG. 9 does not constitute a limitation on the user equipment, and the user equipment may include more or less components than the illustration, or combine some components, or different components. Arrangement.
  • the user equipment includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
  • the processor 610 is configured to determine whether the MAC PDU received by the user equipment includes a reserved LCID value, and when the MAC PDU includes a reserved LCID value, discard the MAC PDU corresponding to the reserved LCID value. SDU or sub-PDU.
  • the MAC PDU includes a MAC header and at least one SDU
  • the MAC header includes multiple MAC subheaders, wherein one sub-header identifies a secondary link shared channel, and each remaining sub-header and each SDU
  • the processor 610 is specifically configured to discard the MAC sub-header including the reserved LCID value and its corresponding SDU.
  • the MAC PDU includes at least one sub-PDU
  • the sub-PDU includes a MAC sub-header identifier SL-SCH or includes a MAC sub-header and an SDU
  • the processor 610 is specifically configured to discard the reserved LCID.
  • processor 610 is specifically configured to discard the remaining subPDUs after the sub PDUs in the MAC PDUs.
  • the processor 610 is further configured to determine whether the MAC SDU is associated with the reserved LCID value; when the MAC SDU is associated with the reserved LCID value, the MAC SDU is placed in the first MAC PDU, and the MAC SDU is not associated with the reserved LCID. In the case of a value, the MAC SDU is placed in the second MAC PDU; the first MAC PDU and the second MAC PDU are respectively sent.
  • the processor 610 is specifically configured to: after the user equipment activates the data packet replication function, determine whether the MAC SDU is associated with the reserved LCID value; and assemble the MAC sub-head including the reserved LCID value and the corresponding SDU into The first MAC PDU, the MAC subheader not including the reserved LCID value and its corresponding SDU are assembled into a second MAC PDU; and the first MAC PDU and the second MAC PDU are sent via different HARQ entities.
  • the radio frequency unit 601 can be used for receiving and transmitting signals during and after receiving or transmitting information, and specifically, receiving downlink data from the base station, and then processing the data to the processor 610; The uplink data is sent to the base station.
  • radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio unit 601 can also communicate with the network and other devices through a wireless communication system.
  • the user equipment provides the user with wireless broadband Internet access through the network module 602, such as helping the user to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 603 can convert the audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as a sound. Moreover, the audio output unit 603 can also provide audio output (eg, call signal reception sound, message reception sound, etc.) associated with a particular function performed by the user device 600.
  • the audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 604 is for receiving an audio or video signal.
  • the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042 that images an still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode.
  • the data is processed.
  • the processed image frame can be displayed on display unit 606.
  • the image frames processed by the graphics processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio unit 601 or the network module 602.
  • the microphone 6042 can receive sound and can process such sound as audio data.
  • the processed audio data can be converted to a format output that can be transmitted to the mobile communication base station via the radio unit 601 in the case of a telephone call mode.
  • User device 600 also includes at least one type of sensor 605, such as a light sensor, motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 6061 according to the brightness of the ambient light, and the proximity sensor can close the display panel 6061 when the user device 600 moves to the ear. / or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the posture of user equipment (such as horizontal and vertical screen switching, related games).
  • sensor 605 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensors and the like are not described here.
  • the display unit 606 is for displaying information input by the user or information provided to the user.
  • the display unit 606 can include a display panel 6061.
  • the display panel 6061 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the user input unit 607 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the user device.
  • the user input unit 607 includes a touch panel 6071 and other input devices 6072.
  • the touch panel 6071 also referred to as a touch screen, can collect touch operations on or near the user (such as a user using a finger, a stylus, or the like on the touch panel 6071 or near the touch panel 6071. operating).
  • the touch panel 6071 may include two parts of a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 610 receives the commands from the processor 610 and executes them.
  • the touch panel 6071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the user input unit 607 may also include other input devices 6072.
  • the other input device 6072 may include, but is not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, and details are not described herein.
  • the touch panel 6071 can be overlaid on the display panel 6061.
  • the touch panel 6071 detects a touch operation thereon or nearby, the touch panel 6071 transmits to the processor 610 to determine the type of the touch event, and then the processor 610 according to the touch.
  • the type of event provides a corresponding visual output on display panel 6061.
  • the touch panel 6071 and the display panel 6061 are used as two independent components to implement the input and output functions of the user device, in some embodiments, the touch panel 6071 can be integrated with the display panel 6061.
  • the input and output functions of the user equipment are implemented, and are not limited herein.
  • the interface unit 608 is an interface in which an external device is connected to the user device 600.
  • the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, and an audio input/output. (I/O) port, video I/O port, headphone port, and more.
  • the interface unit 608 can be configured to receive input from an external device (eg, data information, power, etc.) and transmit the received input to one or more components within the user device 600 or can be used at the user device 600 and externally Data is transferred between devices.
  • an external device eg, data information, power, etc.
  • Memory 609 can be used to store software programs as well as various data.
  • the memory 609 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.).
  • memory 609 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • Processor 610 is the control center of the user equipment, connecting various portions of the entire user equipment using various interfaces and lines, by running or executing software programs and/or modules stored in memory 609, and recalling data stored in memory 609.
  • the user equipment is subjected to various functions and processing data to perform overall monitoring of the user equipment.
  • the processor 610 can include one or more processing units; preferably, the processor 610 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application, etc., and performs modulation and demodulation.
  • the processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 610.
  • the user equipment 600 may also include a power source 611 (such as a battery) that supplies power to the various components.
  • a power source 611 such as a battery
  • the power source 611 may be logically coupled to the processor 610 through a power management system to manage charging, discharging, and power management through the power management system. And other functions.
  • the user equipment 600 includes some functional modules not shown, and details are not described herein again.
  • the SDU or the sub-PDU corresponding to the reserved LCID value in the MAC PDU is discarded, instead of discarding the entire MAC PDU, thereby not causing the user equipment.
  • the data reception performance is degraded, thereby ensuring the data reception performance of the user equipment.
  • the user equipment sends data, the MAC SDU associated with the reserved LCID value and the MAC SDU that is not associated with the reserved LCID value are respectively sent in two MAC PDUs, which can prevent the user equipment of the opposite end from receiving the data.
  • the MAC SDU that is not associated with the reserved LCID value is also discarded, which can further ensure the data receiving performance of the user equipment.
  • the data packet receiving performance of the peer user equipment is not affected, thereby ensuring backward compatibility and performance of the communication system.
  • the embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement steps or implementations in the data receiving method as described above The steps in the data transmission method as described above.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • embodiments of the disclosed embodiments can be provided as a method, apparatus, or computer program product.
  • embodiments of the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • Embodiments of the present disclosure are described with reference to flowchart illustrations and/or block diagrams of methods, user devices (systems), and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing user device processor to generate a machine such that instructions are executed by a processor of a computer or other programmable data processing user device.
  • Means are provided for implementing the functions specified in one or more of the flow or in one or more blocks of the flow chart.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing user device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the instruction device implements the functions specified in one or more blocks of the flowchart or in a flow or block of the flowchart.

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Abstract

本公开提供了一种数据发送方法、接收方法及用户设备，属于通信技术领域。其中，应用于用户设备的数据接收方法包括：判断所述用户设备接收到的媒体接入控制MAC协议数据单元PDU是否包含预留逻辑信道标识LCID值；在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的服务数据单元SDU或子PDU。

Description

数据发送方法、接收方法及用户设备
相关申请的交叉引用
本申请主张在2018年3月29日在中国提交的中国专利申请No.201810272572.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，特别是指一种数据发送方法、接收方法及用户设备。
背景技术
副链路(Sidelink)用户设备(User Equipment，UE)在无线空口PC5中引入了载波聚合(PC5 carrier aggregation,PC5 CA)功能，UE可以在两个PC5载波上进行数据包复制(packet duplication)，从而进一步提高数据可靠性。Sidelink UE在包数据汇聚协议(Packet Data Convergence Protocol，PDCP)层执行数据复制功能，经过复制的Sidelink PDCP协议数据单元(Protocol Data Unit，PDU)分别递交给两个不同的无线链路控制(Radio Link Control，RLC)实体，不同RLC实体对应不同的逻辑信道，不同的逻辑信道具有不同的逻辑信道标识(logical channel identity，LCID)。此外，不支持在同一个PC5载波上传输两个复制的数据包，因此媒体接入控制(Medium Access Control，MAC)层在处理来自不同逻辑信道的复制数据时，需经由不同的混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)实体传输。
如图1所示为副链路数据复制功能示意图，在图1中，协议约定(hard coded)用于数据包复制功能的两个LCID(即LCID1，LCID2)是一种固定的一对一映射(one-to-one mapping)关系，例如一个LCID1(取自已经定义的(Legacy)LCID：1,2,...,10)关联一个LCID2(取自预留(reserved)LCID:11,12,...,21)。
根据相关技术中的MAC协议描述，当Sidelink UE接收到的一个MAC PDU包含reserved或者无效的(invalid)LCID值，UE将会把接收到的这个 MAC PDU丢弃。
相关技术中，部分R15 UE的业务数据包，需要R14 UE也可以接收。但如果R15 UE数据发送激活了duplication功能，用于duplication的LCID2(如图1所示)对于R14 UE而言，由于R14 UE不支持Sidelink packet duplication，属于reserved LCID，因此当R14 UE检测到MAC PDU包含了LCID2，根据相关技术中的MAC协议，R14 UE会将整个MAC PDU丢弃，造成R14 UE数据接收性能的下降(packet loss)。
发明内容
本公开要解决的技术问题是提供一种数据发送方法、接收方法及用户设备，能够保证用户设备的数据接收性能。
为解决上述技术问题，本公开的实施例提供技术方案如下：
第一方面，本公开实施例提供了一种数据接收方法，应用于用户设备，所述方法包括：
判断所述用户设备接收到的媒体接入控制MAC协议数据单元PDU是否包含预留逻辑信道标识LCID值；
在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的服务数据单元SDU或子PDU。
第二方面，本公开实施例提供了一种数据发送方法，应用于用户设备，所述方法包括：
判断媒体接入控制MAC服务数据单元SDU是否关联预留逻辑信道标识LCID值；
在MAC SDU关联预留LCID值时，将MAC SDU放在第一MAC协议数据单元PDU中，在MAC SDU不关联预留LCID值时，将MAC SDU放在第二MAC PDU中；
分别发送所述第一MAC PDU和所述第二MAC PDU。
第三方面，本公开实施例提供了一种用户设备，包括：
判断模块，用于判断所述用户设备接收到的媒体接入控制MAC协议数据单元PDU是否包含预留逻辑信道标识LCID值；
丢弃模块，用于在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的服务数据单元SDU或子PDU。
第四方面，本公开实施例提供了一种用户设备，包括：
判断模块，用于判断媒体接入控制MAC服务数据单元SDU是否关联预留逻辑信道标识LCID值；
封装模块，用于在MAC SDU关联预留LCID值时，将MAC SDU放在第一MAC协议数据单元PDU中，在MAC SDU不关联预留LCID值时，将MAC SDU放在第二MAC PDU中；
发送模块，用于分别发送所述第一MAC PDU和所述第二MAC PDU。
第五方面，本公开实施例提供了一种用户设备，包括：存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如上所述的数据接收方法中的步骤或实现如上所述的数据发送方法中的步骤。
第六方面，本公开实施例提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如上所述的数据接收方法中的步骤或实现如上所述的数据发送方法中的步骤。
本公开的实施例具有以下有益效果：
上述方案中，在用户设备接收到的MAC PDU包含预留LCID值时，丢弃MAC PDU中与预留LCID值对应的SDU或子PDU，而不是将整个MAC PDU丢弃，从而不会造成用户设备数据接收性能的下降，进而保证用户设备的数据接收性能。另一方面，用户设备在发送数据时，将关联预留LCID值的MAC SDU和不关联预留LCID值的MAC SDU分别放在两个MAC PDU中发送，可以避免对端的用户设备在接收到包含预留LCID值的MAC PDU后，将不关联预留LCID值的MAC SDU也丢弃，能够进一步保证用户设备的数据接收性能。通过本公开的技术方案，可以实现在用户设备激活数据包复制功能发送业务数据包时，不影响对端用户设备的数据包接收性能，从而保证通信系统的后向兼容性和性能。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，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为副链路数据复制功能示意图；
图2为本公开实施例数据接收方法的流程示意图；
图3为本公开实施例数据发送方法的流程示意图；
图4为本公开具体实施例一丢弃MAC SDU和MAC sub-header的示意图；
图5为本公开具体实施例二丢弃MAC subPDU的示意图；
图6为本公开具体实施例三分开发送MAC SDU的示意图；
图7为本公开实施例用户设备的结构示意图；
图8为本公开另一实施例用户设备的结构示意图；
图9为本公开实施例用户设备的组成示意图。
具体实施方式
为使本公开的实施例要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
本公开的实施例提供一种数据发送方法、接收方法及用户设备，能够保证用户设备的数据接收性能。
本公开实施例提供一种数据接收方法，应用于用户设备，如图2所示，所述方法包括：
步骤101：判断所述用户设备接收到的MAC PDU是否包含预留LCID值；
步骤102：在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的服务数据单元(Service Data Unit，SDU)或子PDU。
本实施例中，在用户设备接收到的MAC PDU包含预留LCID值时，丢弃MAC PDU中与预留LCID值对应的SDU或子PDU，而不是将整个MAC PDU丢弃，从而不会造成用户设备数据接收性能的下降，进而保证用户设备的数据接收性能。通过本实施例的技术方案，可以实现在用户设备激活数据 包复制功能发送业务数据包时，不影响对端用户设备的数据包接收性能，从而保证通信系统的后向兼容性和性能。
一具体实施方式中，所述MAC PDU包括一个MAC头和至少一个SDU，所述MAC头包括多个MAC子头(sub-header)，其中一个sub-header标识副链路共享信道(Sidelink Shared Channel，SL-SCH)，剩余的每一sub-header与每一SDU对应，所述丢弃所述MAC PDU中与所述预留LCID值对应的SDU包括：
丢弃包含预留LCID值的MAC sub-header及其对应的SDU。
另一具体实施方式中，所述MAC PDU包括至少一个子PDU(subPDU)，所述subPDU包括一个MAC sub-header标识SL-SCH或者包括一个MAC sub-header和一个SDU，所述丢弃所述MAC PDU中与所述预留LCID值对应的子PDU包括：
丢弃包含预留LCID值的MAC sub-header所在的subPDU。
进一步地，所述方法还包括：
丢弃所述MAC PDU中所述subPDU后的剩余的subPDU。
本公开实施例还提供了一种数据发送方法，应用于用户设备，如图3所示，所述方法包括：
步骤201：判断MAC SDU是否关联预留LCID值；
步骤202：在MAC SDU关联预留LCID值时，将MAC SDU放在第一MAC PDU中，在MAC SDU不关联预留LCID值时，将MAC SDU放在第二MAC PDU中；
步骤203：分别发送所述第一MAC PDU和所述第二MAC PDU。
本实施例中，用户设备在发送数据时，将关联预留LCID值的MAC SDU和不关联预留LCID值的MAC SDU分别放在两个MAC PDU中发送，可以避免对端的用户设备在接收到包含预留LCID值的MAC PDU后，将不关联预留LCID值的MAC SDU也丢弃，能够进一步保证用户设备的数据接收性能。通过本公开的技术方案，可以实现在用户设备激活数据包复制功能发送业务数据包时，不影响对端用户设备的数据包接收性能，从而保证通信系统的后向兼容性和性能。
进一步地，所述方法具体包括：
在所述用户设备激活数据包复制功能后，判断MAC SDU是否关联预留LCID值；
将包含预留LCID值的MAC子头(sub-header)及其对应的SDU组装成第一MAC PDU，将不包含预留LCID值的MAC子头(即包含已经定义的LCID值的MAC sub-header)及其对应的SDU组装成第二MAC PDU；
将所述第一MAC PDU和所述第二MAC PDU经由不同的混合自动重传请求HARQ实体发送。
本实施例上述的数据发送方法和数据接收方法不仅适用于长期演进(Long Term Evolution，LTE)系统中的副链路用户设备，还适用于新空口(New Radio，NR)系统中的副链路用户设备的MAC层数据处理。
下面结合具体的实施例对本公开的数据接收方法及数据发送方法进行详细介绍：
实施例一
本实施例中，增强Sidelink用户设备的接收行为，Sidelink用户设备接收如图4所示的MAC PDU，MAC PDU包括一个MAC头(header)、多个MAC SDU，可选地，MAC PDU还包含填充(padding)的部分，用于MAC PDU长度字节对齐。MAC头包括多个MAC子头(sub-header)，其中一个sub-header标识SL-SCH，剩余的每一sub-header与每一MAC SDU对应，在MAC PDU包含padding时，相应地，MAC头还包括有padding sub-header。
本实施例中，Sidelink用户设备接收到如图4所示的MAC PDU时，首先判断MAC PDU是否包含预留LCID值；在MAC PDU包含预留LCID值时，Sidelink用户设备丢弃(discard)包含预留LCID值的一个或多个MAC sub-header及相应的一个或多个MAC SDU。如图4所示的例子中，Sidelink用户设备丢弃有斜线阴影的MAC sub-header及MAC SDU。
实施例二
本实施例中，增强Sidelink用户设备的接收行为，Sidelink用户设备接收如图5所示的MAC PDU，MAC PDU包括至少两个子PDU(subPDU)，有一个subPDU仅包含sub-header用来标识SL-SCH，其他的subPDU包括一个 MAC sub-header和一个SDU。可选地，MAC PDU还包含padding的部分，用于MAC PDU或MAC subPDU长度字节对齐。
本实施例中，Sidelink用户设备接收到如图5所示的MAC PDU时，首先判断MAC subPDU是否包含预留LCID值；在MAC subPDU包含预留LCID值时，Sidelink用户设备丢弃包含预留LCID值的MAC sub-header所在的subPDU以及剩余的一个或多个MAC subPDU。如图5所示的例子中，Sidelink用户设备丢弃有斜线阴影的MAC subPDU以及剩余的多个MAC subPDU。
实施例三
本实施例中，增强Sidelink用户设备的发送行为，将包含用于duplication的reserved LCID的MAC SDU和不包含用于duplication的reserved LCID的MAC SDU分别放在两个MAC PDU发送。如图6所示，当Sidelink UE激活packet duplication功能时，UE将包含用于duplication的reserved LCID值的一个或多个MAC sub-header(即图6中有斜线阴影的部分)及相应的一个或多个MAC SDU(即图6中有斜线阴影的部分)组装成一个MAC PDU；将包含legacy LCID值(用于duplication和non-duplication)的一个或多个MAC sub-header及相应的一个或多个MAC SDU组装成另一个MAC PDU；之后UE将上述封装得到的两个MAC PDU经由不同的HARQ实体传输。可选地，MAC PDU还包含padding的部分，用于MAC PDU长度字节对齐。
本公开实施例还提供了一种用户设备，如图7所示，包括：
判断模块31，用于判断所述用户设备接收到的MAC PDU是否包含预留LCID值；
丢弃模块32，用于在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的SDU或子PDU。
本实施例中，在用户设备接收到的MAC PDU包含预留LCID值时，丢弃MAC PDU中与预留LCID值对应的SDU或子PDU，而不是将整个MAC PDU丢弃，从而不会造成用户设备数据接收性能的下降，进而保证用户设备的数据接收性能。通过本实施例的技术方案，可以实现在用户设备激活数据包复制功能发送业务数据包时，不影响对端用户设备的数据包接收性能，从而保证通信系统的后向兼容性和性能。
一具体实施方式中，所述MAC PDU包括一个MAC头和至少一个SDU，所述MAC头包括多个MAC子头，其中一个sub-header标识副链路共享信道，剩余的每一sub-header与每一SDU对应，丢弃模块32具体用于丢弃包含预留LCID值的MAC sub-header及其对应的SDU。
另一具体实施方式中，所述MAC PDU包括至少一个子PDU，所述subPDU包括一个MAC sub-header标识SL-SCH或者包括一个MAC sub-header和一个SDU，丢弃模块32具体用于丢弃包含预留LCID值的MAC sub-header所在的subPDU。
进一步地，所述丢弃模块32还用于丢弃所述MAC PDU中所述subPDU后的剩余的subPDU。
本公开实施例还提供了一种用户设备，如图8所示，包括：
判断模块41，用于判断MAC SDU是否关联预留LCID值；
封装模块42，用于在MAC SDU关联预留LCID值时，将MAC SDU放在第一MAC PDU中，在MAC SDU不关联预留LCID值时，将MAC SDU放在第二MAC PDU中；
发送模块43，用于分别发送所述第一MAC PDU和所述第二MAC PDU。
本实施例中，用户设备在发送数据时，将关联预留LCID值的MAC SDU和不关联预留LCID值的MAC SDU分别放在两个MAC PDU中发送，可以避免对端的用户设备在接收到包含预留LCID值的MAC PDU后，将不关联预留LCID值的MAC SDU也丢弃，能够进一步保证用户设备的数据接收性能。通过本公开的技术方案，可以实现在用户设备激活数据包复制功能发送业务数据包时，不影响对端用户设备的数据包接收性能，从而保证通信系统的后向兼容性和性能。
进一步地，
所述判断模块41具体用于在所述用户设备激活数据包复制功能后，判断MAC SDU是否关联预留LCID值；
所述封装模块42具体用于将包含预留LCID值的MAC子头及其对应的SDU组装成第一MAC PDU，将不包含预留LCID值的MAC子头及其对应的SDU组装成第二MAC PDU；
所述发送模块43具体用于将所述第一MAC PDU和所述第二MAC PDU经由不同的HARQ实体发送。
本公开实施例还提供了一种用户设备，包括：存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如上所述的数据接收方法中的步骤或实现如上所述的数据发送方法中的步骤。
图9为实现本公开各个实施例的一种用户设备的硬件结构示意图。参见图9，该用户设备600包括但不限于：射频单元601、网络模块602、音频输出单元603、输入单元604、传感器605、显示单元606、用户输入单元607、接口单元608、存储器609、处理器610、以及电源611等部件。本领域技术人员可以理解，图9中示出的用户设备结构并不构成对用户设备的限定，用户设备可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。在本公开实施例中，用户设备包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。
所述处理器610用于判断所述用户设备接收到的MAC PDU是否包含预留LCID值；在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的SDU或子PDU。
进一步地，所述MAC PDU包括一个MAC头和至少一个SDU，所述MAC头包括多个MAC子头，其中一个sub-header标识副链路共享信道，剩余的每一sub-header与每一SDU对应，所述处理器610具体用于丢弃包含预留LCID值的MAC sub-header及其对应的SDU。
进一步地，所述MAC PDU包括至少一个子PDU，所述subPDU包括一个MAC sub-header标识SL-SCH或者包括一个MAC sub-header和一个SDU，所述处理器610具体用于丢弃包含预留LCID值的MAC sub-header所在的subPDU。
进一步地，所述处理器610具体用于丢弃所述MAC PDU中所述subPDU后的剩余的subPDU。
进一步地，所述处理器610还用于判断MAC SDU是否关联预留LCID值；在MAC SDU关联预留LCID值时，将MAC SDU放在第一MAC PDU 中，在MAC SDU不关联预留LCID值时，将MAC SDU放在第二MAC PDU中；分别发送所述第一MAC PDU和所述第二MAC PDU。
进一步地，所述处理器610具体用于在所述用户设备激活数据包复制功能后，判断MAC SDU是否关联预留LCID值；将包含预留LCID值的MAC子头及其对应的SDU组装成第一MAC PDU，将不包含预留LCID值的MAC子头及其对应的SDU组装成第二MAC PDU；将所述第一MAC PDU和所述第二MAC PDU经由不同的HARQ实体发送。
应理解的是，本公开实施例中，射频单元601可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器610处理；另外，将上行的数据发送给基站。通常，射频单元601包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元601还可以通过无线通信系统与网络和其他设备通信。
用户设备通过网络模块602为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元603可以将射频单元601或网络模块602接收的或者在存储器609中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元603还可以提供与用户设备600执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元603包括扬声器、蜂鸣器以及受话器等。
输入单元604用于接收音频或视频信号。输入单元604可以包括图形处理器(Graphics Processing Unit，GPU)6041和麦克风6042，图形处理器6041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元606上。经图形处理器6041处理后的图像帧可以存储在存储器609(或其它存储介质)中或者经由射频单元601或网络模块602进行发送。麦克风6042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元601发送到移动通信基站的格式输出。
用户设备600还包括至少一种传感器605，比如光传感器、运动传感器 以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板6061的亮度，接近传感器可在用户设备600移动到耳边时，关闭显示面板6061和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别用户设备姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器605还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元606用于显示由用户输入的信息或提供给用户的信息。显示单元606可包括显示面板6061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode，OLED)等形式来配置显示面板6061。
用户输入单元607可用于接收输入的数字或字符信息，以及产生与用户设备的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元607包括触控面板6071以及其他输入设备6072。触控面板6071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板6071上或在触控面板6071附近的操作)。触控面板6071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器610，接收处理器610发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板6071。除了触控面板6071，用户输入单元607还可以包括其他输入设备6072。具体地，其他输入设备6072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板6071可覆盖在显示面板6061上，当触控面板6071检测到在其上或附近的触摸操作后，传送给处理器610以确定触摸事件的类型，随后处理器610根据触摸事件的类型在显示面板6061上提供相应的视觉 输出。虽然在图9中，触控面板6071与显示面板6061是作为两个独立的部件来实现用户设备的输入和输出功能，但是在某些实施例中，可以将触控面板6071与显示面板6061集成而实现用户设备的输入和输出功能，具体此处不做限定。
接口单元608为外部装置与用户设备600连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元608可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到用户设备600内的一个或多个元件或者可以用于在用户设备600和外部装置之间传输数据。
存储器609可用于存储软件程序以及各种数据。存储器609可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器609可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器610是用户设备的控制中心，利用各种接口和线路连接整个用户设备的各个部分，通过运行或执行存储在存储器609内的软件程序和/或模块，以及调用存储在存储器609内的数据，执行用户设备的各种功能和处理数据，从而对用户设备进行整体监控。处理器610可包括一个或多个处理单元；优选地，处理器610可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器610中。
用户设备600还可以包括给各个部件供电的电源611(比如电池)，优选地，电源611可以通过电源管理系统与处理器610逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，用户设备600包括一些未示出的功能模块，在此不再赘述。
本实施例中，在用户设备接收到的MAC PDU包含预留LCID值时，丢 弃MAC PDU中与预留LCID值对应的SDU或子PDU，而不是将整个MAC PDU丢弃，从而不会造成用户设备数据接收性能的下降，进而保证用户设备的数据接收性能。另一方面，用户设备在发送数据时，将关联预留LCID值的MAC SDU和不关联预留LCID值的MAC SDU分别放在两个MAC PDU中发送，可以避免对端的用户设备在接收到包含预留LCID值的MAC PDU后，将不关联预留LCID值的MAC SDU也丢弃，能够进一步保证用户设备的数据接收性能。通过本公开的技术方案，可以实现在用户设备激活数据包复制功能发送业务数据包时，不影响对端用户设备的数据包接收性能，从而保证通信系统的后向兼容性和性能。
本公开实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如上所述的数据接收方法中的步骤或实现如上所述的数据发送方法中的步骤。
可以理解的是，本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本文所述功能的模块(例如过程、函数等)来实现本文所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
本领域内的技术人员应明白，本公开实施例的实施例可提供为方法、装置、或计算机程序产品。因此，本公开实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开实施例是参照根据本公开实施例的方法、用户设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理用户设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理用户设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理用户设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理用户设备上，使得在计算机或其他可编程用户设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程用户设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本公开实施例的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本公开实施例范围的所有变更和修改。
还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者用户设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者用 户设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者用户设备中还存在另外的相同要素。
以上所述的是本公开的优选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (14)

  1. 一种数据接收方法，应用于用户设备，所述方法包括：
    判断所述用户设备接收到的媒体接入控制MAC协议数据单元PDU是否包含预留逻辑信道标识LCID值；
    在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的服务数据单元SDU或子PDU。
  2. 根据权利要求1所述的数据接收方法，其中，所述MAC PDU包括一个MAC头和至少一个SDU，所述MAC头包括多个MAC子头，其中一个子头标识副链路共享信道SL-SCH，剩余的每一子头与每一SDU对应，所述丢弃所述MAC PDU中与所述预留LCID值对应的SDU包括：
    丢弃包含预留LCID值的MAC子头及其对应的SDU。
  3. 根据权利要求1所述的数据接收方法，其中，所述MAC PDU包括至少一个子PDU，所述子PDU包括一个MAC子头标识SL-SCH或者包括一个MAC子头和一个SDU，所述丢弃所述MAC PDU中与所述预留LCID值对应的子PDU包括：
    丢弃包含预留LCID值的MAC子头所在的子PDU。
  4. 根据权利要求3所述的数据接收方法，其中，所述方法还包括：
    丢弃所述MAC PDU中所述子PDU后的剩余的子PDU。
  5. 一种数据发送方法，应用于用户设备，所述方法包括：
    判断媒体接入控制MAC服务数据单元SDU是否关联预留逻辑信道标识LCID值；
    在MAC SDU关联预留LCID值时，将MAC SDU放在第一MAC协议数据单元PDU中，在MAC SDU不关联预留LCID值时，将MAC SDU放在第二MAC PDU中；
    分别发送所述第一MAC PDU和所述第二MAC PDU。
  6. 根据权利要求5所述的数据发送方法，其中，所述方法具体包括：
    在所述用户设备激活数据包复制功能后，判断MAC SDU是否关联预留LCID值；
    将包含预留LCID值的MAC子头及其对应的SDU组装成第一MAC PDU，将不包含预留LCID值的MAC子头及其对应的SDU组装成第二MAC PDU；
    将所述第一MAC PDU和所述第二MAC PDU经由不同的混合自动重传请求HARQ实体发送。
  7. 一种用户设备，包括：
    判断模块，用于判断所述用户设备接收到的媒体接入控制MAC协议数据单元PDU是否包含预留逻辑信道标识LCID值；
    丢弃模块，用于在所述MAC PDU包含预留LCID值时，丢弃所述MAC PDU中与所述预留LCID值对应的服务数据单元SDU或子PDU。
  8. 根据权利要求7所述的用户设备，其中，所述MAC PDU包括一个MAC头和至少一个SDU，所述MAC头包括多个MAC子头，其中一个子头标识副链路共享信道SL-SCH，剩余的每一子头与每一SDU对应，所述丢弃模块具体用于丢弃包含预留LCID值的MAC子头及其对应的SDU。
  9. 根据权利要求7所述的用户设备，其中，所述MAC PDU包括至少一个子PDU，所述子PDU包括一个MAC子头标识SL-SCH或者包括一个MAC子头和一个SDU，所述丢弃模块具体用于丢弃包含预留LCID值的MAC子头所在的子PDU。
  10. 根据权利要求9所述的用户设备，其中，所述丢弃模块还用于丢弃所述MAC PDU中所述子PDU后的剩余的子PDU。
  11. 一种用户设备，包括：
    判断模块，用于判断媒体接入控制MAC服务数据单元SDU是否关联预留逻辑信道标识LCID值；
    封装模块，用于在MAC SDU关联预留LCID值时，将MAC SDU放在第一MAC协议数据单元PDU中，在MAC SDU不关联预留LCID值时，将MAC SDU放在第二MAC PDU中；
    发送模块，用于分别发送所述第一MAC PDU和所述第二MAC PDU。
  12. 根据权利要求11所述的用户设备，其中，
    所述判断模块具体用于在所述用户设备激活数据包复制功能后，判断MAC SDU是否关联预留LCID值；
    所述封装模块具体用于将包含预留LCID值的MAC子头及其对应的SDU组装成第一MAC PDU，将不包含预留LCID值的MAC子头及其对应的SDU组装成第二MAC PDU；
    所述发送模块具体用于将所述第一MAC PDU和所述第二MAC PDU经由不同的混合自动重传请求HARQ实体发送。
  13. 一种用户设备，包括：存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至4中任一项所述的数据接收方法中的步骤或实现如权利要求5或6所述的数据发送方法中的步骤。
  14. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至4中任一项所述的数据接收方法中的步骤或实现如权利要求5或6所述的数据发送方法中的步骤。
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