WO2018195960A1 - 无线通信的方法和装置 - Google Patents

无线通信的方法和装置 Download PDF

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Publication number
WO2018195960A1
WO2018195960A1 PCT/CN2017/082507 CN2017082507W WO2018195960A1 WO 2018195960 A1 WO2018195960 A1 WO 2018195960A1 CN 2017082507 W CN2017082507 W CN 2017082507W WO 2018195960 A1 WO2018195960 A1 WO 2018195960A1
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WO
WIPO (PCT)
Prior art keywords
pdu
data type
data
receiving end
duration
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PCT/CN2017/082507
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English (en)
French (fr)
Inventor
杨宁
刘建华
Original Assignee
Oppo广东移动通信有限公司
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.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201780085118.0A priority Critical patent/CN110235416B/zh
Priority to KR1020197032709A priority patent/KR102323906B1/ko
Priority to JP2019556368A priority patent/JP6935509B2/ja
Priority to EP17906861.4A priority patent/EP3609137A4/en
Priority to PCT/CN2017/082507 priority patent/WO2018195960A1/zh
Publication of WO2018195960A1 publication Critical patent/WO2018195960A1/zh
Priority to US16/656,128 priority patent/US11296831B2/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
    • H04W28/04—Error control
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms
    • 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
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0091—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location arrangements specific to receivers, e.g. format detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
    • 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
    • H04L69/28—Timers or timing mechanisms used in protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • 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
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1642—Formats specially adapted for sequence numbers
    • 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]
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end

Definitions

  • Embodiments of the present application relate to the field of communications, and, more particularly, to a method and apparatus for wireless communication.
  • the receiving end In the reordering scenario in the Unacknowledged Mode (UM) of the Long Term Evolution (LTE), the receiving end needs to detect whether the Media Access Control (MAC) has lost a certain radio link control ( Radio Link Control (RLC) Protocol Data Unit (PDU), which can wait for a PDU that has not been received within the length of the reordering timer t_Reordering.
  • the reordering timer in the prior art has a single duration, so that the flexibility of wireless communication is low.
  • the embodiments of the present application provide a method and apparatus for wireless communication, which is beneficial to improving flexibility of wireless communication.
  • a method for wireless communication comprising: the receiving end determines that at least one PDU is not received between the first data protocol unit PDU and the second PDU; and the receiving end is configured according to the at least one PDU
  • the data type determines a target duration of the timer; the receiver starts the timer and waits for each PDU in the at least one PDU within the target duration.
  • the receiving end selects the duration of the timer according to the data type of the lost PDU, which is beneficial to improve the flexibility of the wireless communication.
  • the receiving end may be a terminal device or a network device.
  • determining a target duration of the timer according to the data type of the at least one PDU where the target duration of the timer may be determined according to only the data type of the partial PDU in the at least one PDU, or according to the at least The data type of all PDUs in a PDU determines the target duration of the timer.
  • Waiting for the at least one PDU within the target duration means that the receiving end can wait for the at least one PDU in parallel within the target duration.
  • the plurality of durations are in one-to-one correspondence with the data types.
  • the receiving end may select, according to the at least one PDU, a duration corresponding to a certain data type from the plurality of durations as a target duration.
  • the method further includes: the receiving end determining that the at least one PDU includes a PDU of a first data type and a PDU of a second data type; the receiving end determines, according to a data type of the at least one PDU,
  • the target duration of the timer includes: the receiving end determines the duration corresponding to the first data type as the target duration of the timer.
  • the method further includes: the receiving end determines that a data type of each of the at least one PDU is a second data type; and the receiving end determines, according to the data type of the at least one PDU,
  • the target duration of the timer includes: the receiving end determines the duration corresponding to the second data type as the target duration of the timer.
  • the first data type has a higher priority than the second data type, and the duration corresponding to the first data type is greater than the duration corresponding to the second data type.
  • the receiving end may use the longest duration of the data types corresponding to the data types of the multiple data types as the duration of the timer.
  • each of the first PDU, the second PDU, and the at least one PDU carries an indication field, where the indication field is used to indicate a location of a PDU different from a data type of the PDU.
  • the PDU that is different from the data type of the PDU is the PDU that is sent before the local PDU and is the closest to the sequence number of the PDU.
  • the method further includes: the receiving end according to the indication field carried in the second PDU, Determining the data type of the at least one PDU.
  • the receiving end may determine the maximum of the determined multiple data types corresponding to the certain data type.
  • the duration is determined as the duration of the timer of the unreceived PDU.
  • the indication field may further indicate a location of the PDU that is higher in priority than the data type of the PDU and is closest to the current PDU, and the receiving end may directly set the timer of the at least one PDU.
  • the duration is set to the duration corresponding to the higher priority data type.
  • the sending end may notify the receiving end of the data type of the multiple PDUs to be sent before sending the PDU, and the receiving end may determine that at least one PDU is not received, Determining a data type of each of the at least one PDU according to a data type of the plurality of consecutive PDUs sent by the transmitting end according to the sequence number of the at least one PDU.
  • the receiving end is a terminal device
  • the method further includes: receiving, by the terminal device, the multiple durations sent by the network device.
  • the method further includes: if the timer expires, the receiving end groups all the PDUs in the at least one PDU received within the target duration and updates the reordering window.
  • the data type is an intra-coded frame type, a forward predictive coded frame type, or a bi-predictive interpolated coded frame type.
  • PDUs of different data types may also be data under different service types.
  • the importance of the Ultra-Reliable and Low-Latency Communications (URLLC) service may be higher, so the receiver can configure a longer timer for the data under the service.
  • the enhanced mobile broadband (EMBB) service is relatively common, and the receiving end can configure a timer with a shorter duration for the data under the service.
  • a method for wireless communication comprising: the receiving end determines that a plurality of PDUs having multiple data types between the first data protocol unit PDU and the second PDU are not received; the receiving end is Determining, by the plurality of data types, durations of the plurality of timers corresponding to the plurality of data types; the receiving end simultaneously starts the plurality of timers, and waiting for the plurality of PDUs within the duration of the multiple timers.
  • the receiver uses a variety of timers to improve the flexibility of wireless communication.
  • the multiple data types include a first data type and a second data type, and a duration of a timer corresponding to the first data type is greater than a duration of a timer corresponding to the second data type.
  • the method further includes: if the timer corresponding to the first data type times out, the receiving end groups all the PDUs in the plurality of PDUs received within the duration of the timer corresponding to the first data type Package and update the reordering window.
  • the multiple data types include a first data type and a second data type, and a duration of a timer corresponding to the first data type is greater than a duration of a timer corresponding to the second data type.
  • the method further includes: if the timer corresponding to the second data type times out and the receiving end receives all the PDUs of the first data type of the plurality of PDUs before the timer corresponding to the second data type times out, The receiving end pairs the timers corresponding to the second data type All PDUs of the plurality of PDUs received within the duration are grouped and the reordering window is updated.
  • the multiple data types include a first data type and a second data type, and a duration of a timer corresponding to the first data type is greater than a duration of a timer corresponding to the second data type.
  • the method further includes: if the timer corresponding to the second data type times out and the receiving end receives all the PDUs of the first data type of the plurality of PDUs before the timer corresponding to the first data type times out And the receiving end groups all the PDUs of the plurality of PDUs received before ending the timer corresponding to the first data type and updates the reordering window.
  • the receiving end groups the multiple PDUs and updates the PDUs. Sort window.
  • the first data type has a higher priority than the second data type.
  • each of the first PDU, the second PDU, and the multiple PDUs carries an indication field, where the indication field is used to indicate a location of a PDU different from a data type of the PDU.
  • the PDU that is different from the data type of the PDU is the PDU that is sent before the local PDU and is the closest to the sequence number of the PDU.
  • the method further includes: the receiving end according to the indication field carried in the second PDU, Determine the multiple data types.
  • the multiple data types are at least two of an intra-coded frame type, a forward predictive coded frame type, or a bi-predictive interpolated coded frame type.
  • a method for wireless communication comprising: sending, by a transmitting end, a plurality of data protocol unit PDUs to a receiving end, each of the plurality of PDUs including an indication field, the indication field being used to indicate The location of the PDU with different data types of the PDU, the PDU different from the data type of the PDU is the PDU that is sent before the local PDU and is the closest to the serial number of the local PDU, so that the receiving end determines that the receiving end does not receive the PDU. a data type of at least one PDU, the plurality of PDUs including the at least one PDU.
  • the sending end is a network device
  • the receiving end is a terminal device
  • the method further includes: the network device sending, to the terminal device, a plurality of durations, so that the terminal device is configured according to the at least one PDU.
  • the data type, the target duration of the timer is determined from the multiple durations, and the target duration of the timer is the maximum time that the terminal device waits for each PDU in the at least one PDU.
  • the data type is intra-coded frame type, forward prediction coding Code frame type or bidirectionally predicted interpolated coded frame type.
  • an apparatus for performing the method of any of the first aspect or the first aspect of the first aspect described above.
  • the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • an apparatus for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
  • the apparatus comprises means for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
  • an apparatus for performing the method of any of the above-described third or third possible aspects.
  • the apparatus comprises means for performing the method of any of the above-described third aspect or any of the possible implementations of the second aspect.
  • an apparatus comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the first aspect or the first aspect of the first aspect.
  • an apparatus comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
  • an apparatus comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the above-described third aspect or any of the possible implementations of the third aspect.
  • a tenth aspect a computer storage medium for storing the method in any of the above first aspect or the first aspect, in any of the possible implementations of the second aspect or the second aspect, The method, or computer software instructions for use in the method of any of the third aspect or any of the possible implementations of the third aspect, comprising a program designed to perform the above aspects.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a specific scenario of an embodiment of the present application.
  • FIG. 3 shows a schematic block diagram of a method of wireless communication in an embodiment of the present application.
  • FIG. 4 shows another schematic block diagram of a method of wireless communication in an embodiment of the present application.
  • FIG. 5 shows still another schematic block diagram of a method of wireless communication in an embodiment of the present application.
  • FIG. 6 shows still another schematic block diagram of a method of wireless communication in an embodiment of the present application.
  • FIG. 7 shows still another schematic block diagram of a method of wireless communication in an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of an apparatus for wireless communication in an embodiment of the present application.
  • FIG. 9 is another schematic block diagram of an apparatus for wireless communication in an embodiment of the present application.
  • FIG. 10 is still another schematic block diagram of an apparatus for wireless communication according to an embodiment of the present application.
  • FIG. 11 is still another schematic block diagram of an apparatus for wireless communication in an embodiment of the present application.
  • FIG. 12 is still another schematic block diagram of an apparatus for wireless communication in an embodiment of the present application.
  • FIG. 13 is still another schematic block diagram of an apparatus for wireless communication in an embodiment of the present application.
  • 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
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technologies, such as a sparse code multiple access (SCMA) system, and a low-density signature (Low). Density Signature (LDS) system, etc., of course, the SCMA system and the LDS system may also be referred to as other names in the communication field; further, the technical solution of the embodiment of the present application can be applied to multi-carrier using non-orthogonal multiple access technology.
  • SCMA sparse code multiple access
  • LDS Density Signature
  • the system uses, for example, non-orthogonal multiple access technology, Orthogonal Frequency Division Multiplexing (OFDM), Filter Bank Multi-Carrier (FBMC), and Generalized Frequency Division Multiplexing (Generalized Frequency).
  • OFDM Orthogonal Frequency Division Multiplexing
  • FBMC Filter Bank Multi-Carrier
  • Generalized Frequency Division Multiplexing Generalized Frequency Division Multiplexing
  • GFDM Filtered Orthogonal Frequency Division Multiplexing
  • F-OFDM Filtered-OFDM
  • F-OFDM Frequency Division Multiplexing
  • the terminal device in the embodiment of the present application may refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device.
  • Communication device user agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, where the network device may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in a WCDMA system. And may be an evolved base station (eNB or eNodeB) in the LTE system, or may be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device may be The embodiments of the present application are not limited to the relay station, the access point, the in-vehicle device, the wearable device, and the network device in the future 5G network or the network device in the future evolved PLMN network.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • NB base station
  • CRAN cloud radio access network
  • the embodiments of the present application are not limited to the relay station, the access point, the in-vehicle device, the wearable device, and the network device in the future 5G network or
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • the communication system in FIG. 1 may include a terminal device 10 and a network device 20.
  • the network device 20 is configured to provide communication services for the terminal device 10 and access the core network.
  • the terminal device 10 accesses the network by searching for synchronization signals, broadcast signals, and the like transmitted by the network device 20, thereby performing communication with the network.
  • the arrows shown in FIG. 1 may represent uplink/downlink transmissions by a cellular link between the terminal device 10 and the network device 20.
  • the Radio Link Control (RLC) layer is located between a Packet Data Convergence Protocol (PDCP) layer and a Media Access Control (MAC) layer. It communicates with the PDCP layer through a Service Access Point (SAP) and communicates with the MAC layer through a logical channel. There is one RLC entity per logical channel per UE.
  • the data received by the RLC entity from the PDCP layer, or sent to The data of the PDCP layer is called RLC SDU.
  • the data received by the RLC entity from the MAC layer, or the data sent to the MAC layer is referred to as an RLC PDU.
  • the embodiment of the present application is based on a reordering scenario in the Unacknowledged Mode (UM) of LTE.
  • UM Unacknowledged Mode
  • the UM entity mainly does several things at the receiving end: (1) reassembling the segmented RLC SDU to recover the original RLC SDU and sending it to the PDCP layer; (2) reordering the RLC PDU (reordering) (3) detecting and discarding duplicate detection.
  • the RLC PDUs received by the receiving end are out of order, reordering is required first. Since the MAC layer processes HARQ using multiple Hybrid Automatic Repeat reQuest (HARQ) processes, out-of-order arrival is inevitable. The out-of-order RLC PDUs are first stored in the receiving buffer until the previous RLC PDUs have been successfully received and delivered to the PDCP layer.
  • HARQ Hybrid Automatic Repeat reQuest
  • the receiving end needs to detect whether the MAC layer has lost a certain RLC PDU and avoid excessive reordering delay. Simply put, the receiver only waits for the RLC PDU that has not been received for a while, and waits for it.
  • the reordering timer t_Reordering determines how long it takes to wait for a PDU that has not yet been received. There is only one t_Reordering per UM entity. The purpose of using this timer is to detect whether a certain RLC PDU is lost in the MAC layer. If the PDU is not received within the time specified by t_Reordering, the receiving end considers that the PDU has been lost, and the UM entity will not try again. Receive these PDUs that have been lost.
  • the HARQ processing of the MAC layer causes the RLC PDU to arrive at the RLC layer of the receiving end in the order of PDU 8, PDU 6, and PDU 9.
  • the receiving end reorders the received PDU, and saves the PDU in the receiving buffer in the order of PDU 6, PDU 8, and PDU 9.
  • the timer t_Reordering is started. Since the PDU 7 has not received before the timer expires, the receiving end considers that the PDU 7 is lost.
  • the receiving end When the receiving end reassembles the RLC SDU, the partial segmentation of the SDU 16 and the SDU 17 is lost due to the loss of the PDU 7, so that the complete SDU 16 and the SDU 17 cannot be reassembled, so the received segments of the SDU 16 and the SDU 17 will thrown away. SDU 15 and SDU 18 are fully received and will be delivered to the PDCP layer. The received segment of SDU 19 will continue to be placed in the receive buffer until all segments of SDU 19 are received (and eventually may be discarded).
  • the protocol mainly defines three kinds of frames, which are intra-coded frames (I Frame), forward predictive coded frame (P frame), and bidirectionally predictive interpolated coded frame (B frame).
  • An I frame is usually the first frame of each group of pictures (GOP), which is moderately compressed and used as a reference point for random access, and can be regarded as an image.
  • the I frame can be seen as a compressed product of an image, which can be decompressed into a single complete picture by the video decompression algorithm.
  • a P-frame is a coded image that compresses the amount of transmitted data by sufficiently reducing time-redundant information below the previously encoded frame in the sequence of images, also called a predicted frame, and needs to refer to an I-frame or B-frame in front of it to generate a complete frame.
  • a B-frame is a coded picture, also called a bi-predictive frame, that contemplates the amount of transmitted data, considering both the encoded frame in front of the source picture sequence and the time-redundant information between the encoded frames following the source picture sequence.
  • FIG. 3 shows a schematic block diagram of a method 100 of wireless communication in accordance with an embodiment of the present application. As shown in FIG. 3, the method 100 includes:
  • the receiving end determines that at least one PDU is not received between the first data protocol unit PDU and the second PDU.
  • the receiving end determines a target duration of the timer according to the data type of the at least one PDU.
  • the receiving end starts the timer, and waits for each PDU in the at least one PDU within the target duration.
  • the receiving end can be a terminal device or a network device.
  • the network device can be configured with several different durations. Specifically, the network device can configure a corresponding duration for different data types. Taking the above frame type as an example, the configuration time of the I frame is 100 ms, and the configuration time of the P frame is 50 ms. That is, if the I frame PDU is lost, the I frame PDU can be waited for within 100 ms, if it is a P frame. If the PDU is lost, the P frame PDU can be waited within 50 ms.
  • the receiving end can judge whether there is a PDU loss in the middle according to the SN of two adjacent PDUs.
  • the two adjacent PDUs can be represented by the relevant variables at the receiving end.
  • the RLC entity at the receiving end needs to maintain two variables, which may be VR (UR): record the sequence number of the oldest PDU waiting to be reordered.
  • VR (UX) Records the sequence number of the next PDU of the PDU that triggered the reordering timer.
  • VR(UR) and VR(UX) can respectively record the upper and lower boundaries within the range of the sequence number corresponding to the current timer. That is to say, the PDU between these two variables is in the process of reordering after the timer ends.
  • the data type of the PDU proposed in the embodiment of the present application may be the various frame types mentioned above, or may be data under different service types.
  • the importance of the Ultra-Reliable and Low-Latency Communications (URLLC) service may be higher, so the receiver can configure a longer timer for the data under the service.
  • the enhanced mobile broadband (EMBB) service is relatively common, and the receiving end can configure a timer with a shorter duration for the data under the service.
  • the target duration of the timer may be determined according to the data type of the partial PDU in the at least one PDU, and the target duration of the timer is determined. It is also possible to determine the target duration of the timer based on the data type of all the PDUs in the at least one PDU.
  • the receiving end may determine that one or more PDUs are not received according to the sequence number discontinuity between the two PDUs. As shown in the example of FIG. 2, the receiving end receives the PDU 8 after receiving the PDU 6, and the serial number between the PDU 6 and the PDU 8 is not continuous, and the receiving end can determine that the PDU 7 is lost, that is, The receiving end can determine that the PDU 7 has not been received.
  • the receiving end starts the timer, and waits for any PDU in the at least one PDU within the target duration. Means that for each PDU of the at least one PDU, the receiving end waits for a target duration after starting the timer, and if a certain PDU of the at least one PDU is received within the target duration, the PDU is correctly received. If the PDU of the at least one PDU is not received within the target duration, the receiving end may determine that the PDU is lost, and the receiving end may discard the other data packets of the SDU related to the PDU.
  • the receiving end selects the duration of the timer according to the data type of the lost PDU, which is beneficial to improving the flexibility of the wireless communication.
  • the receiving end is configured according to the data class of the at least one PDU.
  • the determining the target duration of the timer includes: determining, by the receiving end, the target duration of the timer from the preset multiple durations according to the data type of the at least one PDU.
  • the network device can be pre-configured for a plurality of different durations, and the receiving end can select one of the plurality of durations as the target duration of the timer. If the receiving end is a terminal device and the transmitting end is a network device, the network device may send the pre-configured multiple durations to the terminal device, and the terminal device may further select a target duration according to the data type of the unreceived PDU. If the receiving end is a network device, the sending end is a terminal device, and the network device does not need to send to the terminal device after being pre-configured for a plurality of durations, because the multiple durations are data from which the network device is used according to the unreceived PDU. Type to determine the target duration of the timer.
  • the receiving end determines the target duration of the timer according to the data type of the at least one PDU, and the receiving end is configured according to the data type of the at least one PDU.
  • the target duration of the timer is determined in the duration.
  • the method further includes: the receiving end determining that the at least one PDU includes a PDU of a first data type and a PDU of a second data type; and the receiving end is configured according to a data type of the at least one PDU. And determining a target duration of the timer, including: determining, by the receiving end, a duration corresponding to the first data type as a target duration of the timer.
  • the method further includes: the receiving end determines that a data type of each of the at least one PDU is a second data type; and the receiving end determines, according to a data type of the at least one PDU,
  • the target duration of the timer includes: the receiving end determines the duration corresponding to the second data type as the target duration of the timer.
  • the receiving end determines that the at least one PDU that is not received includes the PDUs of the multiple data types, and the receiving end may use the duration corresponding to one of the data types as the duration of the timer of the at least one PDU. For example, if the at least one PDU includes an I frame and a P frame, the receiving end may directly determine the duration corresponding to the I frame as the duration of the timer. Or if the data type of the at least one PDU is the same type of PDU, the receiving end may directly use the duration corresponding to the type as the duration of the timer of the at least one PDU.
  • the receiving end when the receiving end determines that there are multiple PDUs of different data types between two PDUs, the receiving end may use the longest one of the data types corresponding to the multiple data types.
  • the duration is the duration of the timer.
  • the network device can configure a corresponding duration for multiple data types in advance. Taking the above frame type as an example, the network device can configure 100 ms for the I frame and 50 ms for the P frame, which is B. The frame configuration is 25ms. Then, the receiving end (whether the network device or the terminal device) has one I frame in the middle of acquiring the unreceived PDU, and no matter whether the receiving end has other frame type PDUs not received, the unreceived at least may be directly received.
  • the timer duration of a PDU is set to 100ms. If the receiving end obtains at least one PDU that is not received, the receiving end may directly set the timer duration of the at least one PDU that is not received to the duration corresponding to the type. For example, when the receiving end acquires all the unreceived PDUs as P frames, the receiving end can directly set the timer duration of the at least one PDU that is not received to 50 ms.
  • the above description is based on the case where the PDUs of the two data types are not received, and the at least one PDU in the embodiment of the present application may also be three data types.
  • the receiving end may use the longest duration of the data types corresponding to the three data types or more as the duration of the timer of the at least one PDU.
  • each of the first PDU, the second PDU, and the at least one PDU carries an indication field, where the indication field is used to indicate a PDU different from a data type of the current PDU.
  • the PDU that is different from the data type of the PDU is the PDU that is sent before the local PDU and is the closest to the sequence number of the PDU.
  • the method further includes: the receiving end according to the indication carried in the second PDU A field, determining a data type of the at least one PDU.
  • the transmitting end when a transmitting end sends a PDU to a receiving end, it usually carries the data type of the PDU. If each PDU also carries the location of the nearest PDU different from its own data type, the receiving end can determine at the receiving end.
  • the data type of the at least one PDU may be determined according to the location of the latest PDU whose indication is carried by the PDU and the data type of the PDU. For example, if it is determined according to the indication in the PDU that the location of the PDU that is closest to the sequence number and the data type is different from the first PDU and the second PDU, the receiving end may determine the data of the at least one PDU.
  • the type is all the same as the data type of the second PDU, and the duration corresponding to the data type of the second PDU may be determined as the duration of the timer of the at least one PDU. If it is determined according to the indication in the PDU that the location of the PDU that is closest to the sequence number and the data type is different between the first PDU and the second PDU, the receiving end may determine that the data type of the at least one PDU includes at least the The data type of the second PDU is different from the determined data type of the second PDU, and the receiving end may use a time length corresponding to the data type of the second PDU or a data type different from the second PDU. The duration corresponding to the data type is determined as the target duration of the timer of the at least one PDU.
  • the sender may set an additional value of the RLC header field in each PDU to be sent, where the field indicates how many PDUs from the current PDU have a PDU different from the current PDU data type.
  • the sender sends the RLC PDU, the value of the field is included in the RLC PDU.
  • One way is to put it in the RLC header, for example, a byte, indicating the distance from 0 to 255.
  • the receiving end may determine, according to the foregoing manner, that the data type of the unreceived PDU includes two or more specific data types, the receiving end may The maximum duration corresponding to a certain data type is determined as the duration of the timer of the unreceived PDU.
  • the indication field may further indicate a location of the PDU that is higher in priority than the data type of the PDU and is closest to the current PDU, and the receiving end may directly set the timer of the at least one PDU.
  • the duration is set to the duration corresponding to the higher priority data type.
  • the receiving end receives PDUs 1, 2, 3, 8, and 9.
  • the receiving end determines PDU 4, PDU 5, PDU 6, and PDU 7 according to VR (UR) and VR (UX). If the network device is configured in advance, the time length corresponding to the I frame is 100 ms, and the duration corresponding to the P frame is 50 ms.
  • the receiving end determines that there is at least VR between the VR (UR) and the VR (UX) through the RLC header of the PDU 8.
  • An I-frame so that t-Reordering can be started using a 100ms value.
  • the PDUs 1, 4 are received, and the receiving end judges that there is no I frame between VR (UR) and VR (UX) through the RLC header of the PDU 4, so that the started t-Reordering uses a 50 ms value.
  • the sending end may notify the receiving end of the data type of the multiple PDUs to be sent before sending the PDU, and when the receiving end determines that at least one PDU is not received, the receiving end may The sequence number of the at least one PDU is compared with the data type of the plurality of consecutive PDUs sent by the transmitting end to determine the data type of each of the at least one PDU.
  • the transmitting end may send the data type of the 10 PDUs to be sent to the receiving end once every 10 PDUs, and then, after the receiving end determines that the PDU4 to PDU6 are not received, according to the data of the 10 PDUs sent by the previous sending end. Type, you can determine the data type of PDU4 ⁇ PDU6.
  • the receiving end is a terminal device
  • the method further includes: receiving, by the terminal device, the multiple durations sent by the network device.
  • the method further includes: if the timer expires, the receiving The terminal groups all the PDUs in the at least one PDU received within the target duration and updates the reordering window.
  • the network device mentioned above may configure the terminal device with a duration corresponding to multiple data types, and send the multiple durations to the terminal device. And the network device can indicate to the terminal device a default duration. That is to say, if the technical solution of the embodiment of the present application is not adopted, the receiving end may use the duration selected by the network device as the duration of the timer by default.
  • FIG. 6 shows a schematic block diagram of a method 200 of wireless communication in an embodiment of the present application. As shown in FIG. 6, the method 200 includes:
  • the receiving end determines that multiple PDUs of multiple data types are not received between the first data protocol unit PDU and the second PDU.
  • the receiving end waits for the multiple PDUs within the duration of the multiple timers according to the multiple data types.
  • the receiving end starts the multiple timers at the same time, and wait for the PDUs of the corresponding data types in the multiple PDUs within the duration of each timer of the multiple timers.
  • the receiving end may set a timer corresponding to multiple data types, and the receiving end may simultaneously start the multiple timers. And wait for the PDU of the corresponding data type within the duration of each timer.
  • the data type of the lost PDU is an I frame and a P frame. It is assumed that the duration of the I frame that is pre-configured by the network device is 100 ms, and the duration corresponding to the P frame is 50 ms. The following describes the solution of the embodiment of the present application in the following cases:
  • the receiving end judges that all the lost PDUs between the first PDU and the second PDU are received within 50 ms, and the 50 ms timer and the 100 ms timer can be immediately ended.
  • the receiving end judges that all the PDUs with the data type being P frames are received within 50 ms, and the receiving end can immediately terminate the 50 ms timer, and the receiving end further judges that all the PDUs with the data type being I frames are received between 50 ms and 100 ms. , then the receiver can immediately end the 100ms timer.
  • the receiving end judges that all the PDUs whose data type is I frame are received within 50ms, the receiver can immediately end the 100ms timer, and all the PDUs of the data type are not received within 50ms, then the 50ms timer expires. .
  • the receiving end judges that all PDUs whose data type is P frame have not been received within 50 ms, nor After receiving all the PDUs whose data type is I frame, the receiver receives the PDU with the data type of P frame within 50ms-100ms and does not receive the PDU with the data type of I frame.
  • the receiver can consider the 50ms timer and 100ms. The timers all expire, but the PDUs of the P frames received within 50ms-100ms are valid. If the receiving end receives all the PDUs of the I frame within 50ms-100ms but does not receive the PDUs of all the P frames, the receiving end immediately stops the 100ms timer and considers the receiving before receiving all the PDUs of the I frame. The PDUs of all P frames are valid.
  • the receiving end enables different timers for different data types, which is beneficial to improving the flexibility of wireless communication.
  • the multiple data types include a first data type and a second data type, and a timer corresponding to the first data type has a longer duration than a timer corresponding to the second data type.
  • the method further includes: if the timer corresponding to the first data type times out, the receiving end receives all the PDUs of the plurality of PDUs within the duration of the timer corresponding to the first data type Make a package and update the reorder window.
  • the multiple data types include a first data type and a second data type, and a timer corresponding to the first data type has a longer duration than a timer corresponding to the second data type.
  • the method further includes: if the timer corresponding to the second data type times out and the receiving end receives all of the first data types of the plurality of PDUs before the timer corresponding to the second data type times out a PDU, the receiving end grouping all of the plurality of PDUs received within a duration of a timer corresponding to the second data type and updating a reordering window.
  • the multiple data types include a first data type and a second data type, and a timer corresponding to the first data type has a longer duration than a timer corresponding to the second data type.
  • the method further includes: if the timer corresponding to the second data type times out and the receiving end receives the first data type of the plurality of PDUs before the timer corresponding to the first data type times out All PDUs, the receiving end grouping all the PDUs of the plurality of PDUs received before ending the timer corresponding to the first data type and updating the reordering window.
  • the multiple data types include a first data type and a second data type, and a timer corresponding to the first data type has a longer duration than a timer corresponding to the second data type.
  • the method further includes: if the receiving end receives all the PDUs in the plurality of PDUs before the timer corresponding to the first data type times out, the receiving end pair ends the timing corresponding to the first data type Before or before the timer corresponding to the second data type The plurality of received PDUs are grouped and the reordering window is updated.
  • the priority of the first data type is higher than the priority of the second data type.
  • each of the first PDU, the second PDU, and the multiple PDUs carries an indication field, where the indication field is used to indicate a PDU different from a data type of the PDU.
  • the PDU that is different from the data type of the PDU is the PDU that is sent before the local PDU and is the closest to the sequence number of the PDU.
  • the method further includes: the receiving end according to the indication carried in the second PDU A domain that determines the data type of the plurality of PDUs.
  • the multiple data types are at least two of an intra-coded frame type, a forward predictive coded frame type, or a bi-predictive interpolated coded frame type.
  • FIG. 7 shows a schematic block diagram of a method 300 of wireless communication in an embodiment of the present application. As shown in FIG. 7, the method 300 includes:
  • the sending end sends, to the receiving end, a plurality of data protocol unit PDUs, where each of the plurality of PDUs includes an indication field, where the indication field is used to indicate a location of a PDU different from a data type of the current PDU, and the PDU.
  • a PDU having a different data type is a PDU that is sent before the local PDU and is closest to the sequence number of the local PDU, so that the receiving end determines a data type of at least one PDU that is not received, and the multiple PDU includes the at least one PDU.
  • the method for wireless communication in the embodiment of the present application by indicating to the sending end, the indication information for determining the at least one PDU that is not received, so that the receiving end selects different timers for different data type PDUs, which is beneficial to the receiving end. Improve the flexibility of wireless communication.
  • the sending end may further send the data type of the multiple PDUs to the receiving end before sending the multiple PDUs, and then the receiving end determines that at least one of the multiple PDUs is not After receiving, the receiving end can determine which data types of at least one PDU that are not received. Therefore, the receiving end can further determine the duration of the timer of the at least one PDU according to the determined data type.
  • the sending end is a network device
  • the receiving end is a terminal setting.
  • the method further includes: the network device transmitting, to the terminal device, a plurality of durations, so that the terminal device determines a target duration of the timer from the plurality of durations according to the data type of the at least one PDU, the timer The target duration is the maximum time that the terminal device waits for each PDU in the at least one PDU.
  • the data type is an intra-coded frame type, a forward predictive coding frame type, or a bi-predictive interpolated encoded frame type.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the present application.
  • the implementation of the examples constitutes any limitation.
  • FIG. 8 shows a schematic block diagram of an apparatus 400 for wireless communication in an embodiment of the present application. As shown in FIG. 8, the apparatus 400 includes:
  • a first determining unit 410 configured to determine that at least one PDU is not received between the first data protocol unit PDU and the second PDU;
  • a second determining unit 420 configured to determine a target duration of the timer according to the data type of the at least one PDU
  • the waiting unit 430 is configured to start the timer, and wait for the at least one PDU within the target duration.
  • the apparatus for wireless communication in the embodiment of the present application determines the duration of the timer according to the data type of the lost PDU, which is advantageous for improving the flexibility of the wireless communication.
  • the second determining unit 420 is specifically configured to:
  • the device further includes:
  • a third determining unit 440 configured to determine that the at least one PDU includes a PDU of a first data type and a PDU of a second data type;
  • the second determining unit 420 is specifically configured to:
  • the duration corresponding to the first data type is determined as the target duration of the timer.
  • the device further includes:
  • a third determining unit 440 configured to determine that a data type of each of the at least one PDU is a second data type
  • the second determining unit 420 is specifically configured to:
  • the duration corresponding to the second data type is determined as the target duration of the timer.
  • the priority of the first data type is higher than the second data type, and the duration corresponding to the first data type is greater than the duration corresponding to the second data type.
  • each of the first PDU, the second PDU, and the at least one PDU carries an indication field, where the indication field is used to indicate data with the PDU.
  • the PDUs of different types are PDUs that are different from the data type of the PDU.
  • the PDUs that are sent before the current PDU are the ones that are the closest to the sequence number of the local PDU.
  • the device further includes:
  • the fourth determining unit 450 is configured to determine, according to the indication domain that is carried in the second PDU, a data type of the at least one PDU.
  • the device is a terminal device, and the device 400 further includes:
  • the receiving unit 460 is configured to receive the multiple durations sent by the network device.
  • the data type is an intra-coded frame type, a forward predictive coding frame type, or a bi-predictive interpolated encoded frame type.
  • the apparatus 400 further includes: a processing unit 470, configured to: if the timer expires, group the at least one PDU received in the target duration Update the reordering window.
  • the apparatus 400 for wireless communication may correspond to the receiving end in the method embodiment of the present application, and the above and other operations and/or functions of the respective units in the apparatus 400 are respectively implemented in order to implement FIG. 3 to FIG.
  • the corresponding process of the terminal device in the method 100 shown in FIG. 5 is not repeated here for brevity.
  • FIG. 9 shows a schematic block diagram of an apparatus 500 for wireless communication in an embodiment of the present application.
  • the apparatus 500 includes:
  • a first determining unit 510 configured to determine that multiple PDUs of multiple data types are not received between the first data protocol unit PDU and the second PDU;
  • a second determining unit 520 configured to determine, according to the multiple data types, the multiple data types The duration of multiple timers corresponding to one to one;
  • the waiting unit 530 is configured to start the multiple timers at the same time, and wait for the multiple PDUs within the duration of the multiple timers.
  • the multiple data types include a first data type and a second data type, and a timer corresponding to the first data type has a longer duration than a timer corresponding to the second data type.
  • the device further includes: a processing unit 540, configured to: if the timer corresponding to the first data type times out, to the plurality of PDUs received within a duration of a timer corresponding to the first data type All PDUs are grouped and updated with a reordering window.
  • the processing unit 540 is further configured to: if a timer corresponding to the second data type times out and the device receives before a timer corresponding to the second data type times out All the PDUs of the first data type of the plurality of PDUs, all the PDUs received in the plurality of PDUs received within the duration of the timer corresponding to the second data type are grouped and the reordering window is updated.
  • the processing unit 540 is further configured to: if a timer corresponding to the second data type times out and the device receives before a timer corresponding to the first data type times out All PDUs of the first data type of the plurality of PDUs, all the PDUs of the plurality of PDUs received before ending the timer corresponding to the first data type are grouped and the reordering window is updated.
  • the priority of the first data type is higher than the priority of the second data type.
  • each of the first PDU, the second PDU, and the multiple PDUs carries an indication field, where the indication field is used to indicate a PDU different from a data type of the PDU.
  • the PDU that is different from the data type of the PDU is the PDU that is sent before the current PDU and is the closest to the serial number of the PDU.
  • the device 500 further includes: a third determining unit 550, configured to be The indication field in the second PDU determines the plurality of data types.
  • the multiple data types are at least two of an intra-coded frame type, a forward predictive coded frame type, or a bi-predictive interpolated coded frame type.
  • the apparatus 500 for wireless communication may correspond to the transmitting end in the method embodiment of the present application, and the above and other operations and/or functions of the respective units in the apparatus 500 are respectively implemented to implement FIG.
  • the corresponding process of the terminal device in the method 200 is not described here for brevity.
  • FIG. 10 shows a schematic block diagram of an apparatus 600 for wireless communication in an embodiment of the present application. As shown in FIG. 10, the apparatus 600 includes:
  • the first sending unit 610 is configured to send, to the receiving end, a plurality of data protocol unit PDUs, each of the plurality of PDUs including an indication field, where the indication field is used to indicate a PDU different from a data type of the current PDU.
  • Position the PDU different from the data type of the PDU is a PDU that is sent before the local PDU and is closest to the sequence number of the local PDU, so that the receiving end determines data of the at least one PDU that is not received.
  • Type the plurality of PDUs including the at least one PDU.
  • the apparatus for wireless communication in the embodiment of the present application by indicating to the transmitting end, the indication information for determining the at least one PDU that is not received, so that the receiving end selects different timers for different data type PDUs, which is beneficial to the receiving end. Improve the flexibility of wireless communication.
  • the device is a network device, and the receiving end is a terminal device, and the device 600 further includes:
  • the second sending unit 620 is configured to send, to the terminal device, a plurality of durations, so that the terminal device determines a target duration of the timer from the plurality of durations according to the data type of the at least one PDU,
  • the target duration of the timer is the maximum time that the terminal device waits for each of the at least one PDU.
  • the data type is an intra-coded frame type, a forward predictive coding frame type, or a bi-predictive interpolated encoded frame type.
  • the apparatus 600 for wireless communication may correspond to the transmitting end in the method embodiment of the present application, and the above and other operations and/or functions of the respective units in the apparatus 600 are respectively implemented to implement FIG.
  • the corresponding process of the terminal device in the method 300 is not described here for brevity.
  • the embodiment of the present application further provides a device 700 for wireless communication, which may be the device 400 in FIG. 8 , which can be used to execute the content of the receiving end corresponding to the method 100 in FIG. 3 .
  • the apparatus 700 includes an input interface 710, an output interface 720, a processor 730, and a memory 740.
  • the input interface 710, the output interface 720, the processor 730, and the memory 740 can be connected by a bus system.
  • the memory 740 is configured to store programs, instructions or code.
  • the processor 730 is configured to execute a program, an instruction or a code in the memory 740 to control the input interface 710 to receive a signal, control the output interface 720 to send a signal, and complete the operations in the foregoing method embodiments.
  • the apparatus for wireless communication in the embodiment of the present application determines the duration of the timer according to the data type of the lost PDU, which is advantageous for improving the flexibility of the wireless communication.
  • the processor 730 may be a central processing unit (CPU), and the processor 730 may also be other general-purpose processors, digital signal processors, application specific integrated circuits, and ready-made Program gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and more.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 740 can include read only memory and random access memory and provides instructions and data to the processor 730. A portion of the memory 740 can also include a non-volatile random access memory. For example, the memory 740 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 730 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 740, and the processor 730 reads the information in the memory 740 and combines its hardware to perform the contents of the above method. To avoid repetition, it will not be described in detail here.
  • the first determining unit 410, the second determining unit 420, the waiting unit 430, the third determining unit 440, the fourth determining unit 450, and the reordering unit 470 in the apparatus 400 may be processed by the processing in FIG.
  • the implementer 460 in the device 400 can be implemented by the input interface 710 in FIG.
  • the embodiment of the present application further provides a device 800 for wireless communication, which may be the device 500 in FIG. 9, which can be used to execute the content of the sender corresponding to the method 200 in FIG.
  • the apparatus 800 includes an input interface 810, an output interface 820, a processor 830, and a memory 840.
  • the input interface 810, the output interface 820, the processor 830, and the memory 840 can be connected by a bus system.
  • the memory 840 is configured to store programs, instructions or code.
  • the processor 830 is configured to execute a program, an instruction or a code in the memory 840 to control the input interface 810 to receive a signal, control the output interface 820 to send a signal, and complete the operations in the foregoing method embodiments.
  • the apparatus for wireless communication in the embodiment of the present application selects different durations of timers for PDUs of different data types, which is advantageous for improving flexibility of wireless communication.
  • the processor 830 may be a central processing unit (CPU), and the processor 830 may also be other general-purpose processors, digital signal processors, application specific integrated circuits, and ready-made Program gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and more.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 840 can include read only memory and random access memory and provides instructions and data to the processor 830. A portion of the memory 840 may also include a non-volatile random access memory. For example, the memory 840 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 830 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 840, and the processor 830 reads the information in the memory 840 and combines the hardware to complete the contents of the above method. To avoid repetition, it will not be described in detail here.
  • the first determining unit 510, the second determining unit 520, the waiting unit 530, the reordering unit 540, and the third determining unit 550 in the apparatus 500 may be implemented by the output interface 820 in FIG.
  • the embodiment of the present application further provides a device 900 for wireless communication, which may be the device 600 in FIG. 10, which can be used to execute the content of the sender corresponding to the method 300 in FIG.
  • the apparatus 900 includes an input interface 910, an output interface 920, a processor 930, and a memory 940.
  • the input interface 910, the output interface 920, the processor 930, and the memory 940 can be connected by a bus system.
  • the memory 940 is for storing programs, instructions or code.
  • the processor 930 is configured to execute a program, an instruction, or a code in the memory 940 to control the input interface 910 to receive a signal, control the output interface 920 to transmit a signal, and complete the operations in the foregoing method embodiments.
  • the apparatus for wireless communication in the embodiment of the present application by indicating to the transmitting end, the indication information for determining the at least one PDU that is not received, so that the receiving end selects different timers for different data type PDUs, which is beneficial to the receiving end. Improve the flexibility of wireless communication.
  • the processor 930 may be a central processing unit (CPU), and the processor 930 may also be other general-purpose processors, digital signals.
  • processor ASIC, off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 940 can include read only memory and random access memory and provides instructions and data to the processor 930. A portion of the memory 940 can also include a non-volatile random access memory. For example, the memory 940 can also store information of the device type.
  • each content of the above method may be completed by an integrated logic circuit of hardware in the processor 930 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 940, and the processor 930 reads the information in the memory 940 and combines its hardware to complete the contents of the above method. To avoid repetition, it will not be described in detail here.
  • the first sending unit 610 and the second sending unit 620 in the device 600 can be implemented by the output interface 620 in FIG.
  • the embodiment of the present application further provides a computer readable storage medium storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in FIG. 3, FIG. 6, or FIG.
  • the embodiment of the present application also proposes a computer program comprising instructions which, when executed by a computer, cause the computer to execute the corresponding flow of the method of the embodiment shown in FIG. 3, FIG. 6, or FIG.
  • the disclosed systems, devices, and The method can be implemented in other ways.
  • 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 may be Integrate 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 separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to 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 application 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.
  • This functionality if implemented as a software functional unit and sold or used as a standalone product, can be stored on a computer readable storage medium.
  • the technical solution of the present application 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.) to perform all or part of the steps of the method of various embodiments of the present application.
  • 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, which can store program codes. .

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Abstract

本申请实施例公开了一种无线通信的方法和装置，该方法包括：接收端确定在第一数据协议单元PDU和第二PDU之间有至少一个PDU未接收到；该接收端根据该至少一个PDU的数据类型，确定定时器的目标时长；该接收端启动该定时器，且在该目标时长内等待该至少一个PDU。本申请实施例的方法和装置，有利于提高无线通信的灵活性。

Description

无线通信的方法和装置 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种无线通信的方法和装置。
背景技术
在长期演进(Long Term Evolution，LTE)的非确认模式(Unacknowledged Mode，UM)中的重排序场景，接收端需要检测媒体接入控制(MediaAccess Control，MAC)是否丢失了某个无线链路控制(Radio Link Control，RLC)协议数据单元(Protocol Data Unit，PDU)，可以通过在重排序定时器t_Reordering时长范围内等待一个还未收到的PDU。现有技术中的重排序定时器时长单一，从而使得无线通信的灵活性较低。
发明内容
有鉴于此，本申请实施例提供了一种无线通信的方法和装置，有利于提高无线通信的灵活性。
第一方面，提供了一种无线通信的方法，该方法包括：接收端确定在第一数据协议单元PDU和第二PDU之间有至少一个PDU未接收到；该接收端根据该至少一个PDU的数据类型，确定定时器的目标时长；该接收端启动该定时器，且在该目标时长内等待该至少一个PDU中的每个PDU。
接收端根据丢失PDU的数据类型选择定时器的时长，有利于提高无线通信的灵活性。
可选地，该接收端可以是终端设备，也可以是网络设备。
可选地，根据该至少一个PDU的数据类型，确定定时器的目标时长，可以是只根据其中该至少一个PDU中的部分PDU的数据类型来确定定时器的目标时长，也可以是根据该至少一个PDU中的全部PDU的数据类型来确定定时器的目标时长。
在目标时长内等待该至少一个PDU是指接收端可以在该目标时长内并行地等待该至少一个PDU。
在一种可能的实现方式中，该接收端根据该至少一个PDU的数据类型， 确定定时器的目标时长，包括：该接收端根据该至少一个PDU的数据类型，从预设的多个时长中确定该定时器的目标时长。
可选地，该多个时长与数据类型一一对应。换句话说，接收端可以根据该至少一个PDU，从该多个时长中选择与某个数据类型对应的时长为目标时长。
在一种可能的实现方式中，该方法还包括：该接收端确定该至少一个PDU包括第一数据类型的PDU和第二数据类型的PDU；该接收端根据该至少一个PDU的数据类型，确定定时器的目标时长，包括：该接收端将与该第一数据类型对应的时长确定为该定时器的目标时长。
在一种可能的实现方式中，该方法还包括：该接收端确定该至少一个PDU中的每个PDU的数据类型均为第二数据类型；该接收端根据该至少一个PDU的数据类型，确定定时器的目标时长，包括：该接收端将与该第二数据类型对应的时长确定为该定时器的目标时长。
在一种可能的实现方式中，该第一数据类型的优先级高于该第二数据类型，与该第一数据类型对应的时长大于与该第二数据类型对应的时长。
可选地，在接收端确定到某两个PDU之间有多个不同数据类型的PDU时，接收端可以将多个数据类型中数据类型对应的时长中最长的时长作为定时器的时长。
在一种可能的实现方式中，该第一PDU、该第二PDU和该至少一个PDU中的每个PDU均承载指示域，该指示域用于指示与本PDU的数据类型不同的PDU的位置，该与本PDU的数据类型不同的PDU为在该本PDU之前发送的与该本PDU的序列号最近的PDU，该方法还包括：该接收端根据承载于该第二PDU中的指示域，确定该至少一个PDU的数据类型。
可选地，若接收端基于上述方式确定出来未接收的PDU的数据类型包括具体的两种以上的数据类型，那么接收端可以将该确定的多种数据类型中与某一数据类型对应的最大时长确定为该未接收的PDU的定时器的时长。
可选地，在本申请实施例中，该指示域还可以指示比本PDU的数据类型优先级更高且距离本PDU最近的PDU的位置，那么接收端可以直接将该至少一个PDU的定时器的时长设置为与优先级更高的数据类型对应的时长。
可选地，发送端可以在发送PDU之前将接下来将要发送的多个PDU的数据类型通知给接收端，接收端在确定出来至少一个PDU未接收到时，可 以根据该至少一个PDU的序列号对照发送端发送的多个连续的PDU的数据类型，来确定该至少一个PDU中每个PDU的数据类型。
在一种可能的实现方式中，该接收端为终端设备，该方法还包括：该终端设备接收网络设备发送的该多个时长。
在一种可能的实现方式中，该方法还包括：若该定时器超时，该接收端对在该目标时长内接收到的该至少一个PDU中的所有PDU进行组包并更新重排序窗口。
在一种可能的实现方式中，该数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
可选地，不同数据类型的PDU也可以是不同业务类型下的数据。例如，低时延和高可靠通信(Ultra-Reliable and Low-Latency Communications，URLLC)业务的重要性可能更高一些，那么接收端可以为该业务下的数据配置时间较长的定时器。而增强移动宽带(Enhanced Mobile Broadband，EMBB)业务比较普通，那么接收端可以为该业务下的数据配置时长较短的定时器等。
第二方面，提供了一种无线通信的方法，该方法包括：接收端确定在第一数据协议单元PDU和第二PDU之间有多种数据类型的多个PDU未接收到；该接收端根据该多种数据类型，确定与该多种数据类型一一对应的多个定时器的时长；该接收端同时启动该多个定时器，在该多个定时器的时长内等待该多个PDU。
接收端采用多种定时器，有利于提高无线通信的灵活性。
在一种可能的实现方式中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该方法还包括：若与该第一数据类型对应的定时器超时，该接收端对在与该第一数据类型对应的定时器的时长内接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
在一种可能的实现方式中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该方法还包括：若与该第二数据类型对应的定时器超时且该接收端在与该第二数据类型对应的定时器超时之前接收到该多个PDU中第一数据类型的所有PDU，该接收端对在与该第二数据类型对应的定时器的 时长内接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
在一种可能的实现方式中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该方法还包括：若与该第二数据类型对应的定时器超时且该接收端在与该第一数据类型对应的定时器超时之前接收到该多个PDU中的第一数据类型的所有PDU，该接收端对在结束与该第一数据类型对应的定时器之前接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
在一种可能的实现方式中，若在与该第二数据类型对应的定时器的时长内接收到该多个PDU中的每个PDU，则接收端对该多个PDU进行组包并更新重排序窗口。
在一种可能的实现方式中，该第一数据类型的优先级高于该第二数据类型的优先级。
在一种可能的实现方式中，该第一PDU、该第二PDU和该多个PDU中的每个PDU均承载指示域，该指示域用于指示与本PDU的数据类型不同的PDU的位置，该与本PDU的数据类型不同的PDU为在该本PDU之前发送的与该本PDU的序列号最近的PDU，该方法还包括：该接收端根据承载于该第二PDU中的指示域，确定该多个数据类型。
在一种可能的实现方式中，该多种数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型中的至少两种。
第三方面，提供了一种无线通信的方法，该方法包括：发送端向接收端发送多个数据协议单元PDU，该多个PDU中的每个PDU包括指示域，该指示域用于指示与本PDU的数据类型不同的PDU的位置，该与本PDU的数据类型不同的PDU为在该本PDU之前发送的与该本PDU的序列号最近的PDU，以便于该接收端确定未接收到的至少一个PDU的数据类型，该多个PDU包括该至少一个PDU。
在一种可能的实现方式中，该发送端为网络设备，该接收端为终端设备，该方法还包括：该网络设备向该终端设备发送多个时长，以便于该终端设备根据该至少一个PDU的数据类型，从该多个时长中确定定时器的目标时长，该定时器的目标时长为该终端设备等待该至少一个PDU中每个PDU的最长时间。
在一种可能的实现方式中，该数据类型为帧内编码帧类型、前向预测编 码帧类型或双向预测内插编码帧类型。
第四方面，提供了一种装置，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该装置包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第五方面，提供了一种装置，用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。具体地，该装置包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的单元。
第六方面，提供了一种装置，用于执行上述第三方面或第三方面的任意可能的实现方式中的方法。具体地，该装置包括用于执行上述第三方面或第二方面的任意可能的实现方式中的方法的单元。
第七方面，提供了一种装置，该装置包括：存储器、处理器、输入接口和输出接口。其中，存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令，该处理器用于执行该存储器存储的指令，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第八方面，提供了一种装置，该装置包括：存储器、处理器、输入接口和输出接口。其中，存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令，该处理器用于执行该存储器存储的指令，用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第九方面，提供了一种装置，该装置包括：存储器、处理器、输入接口和输出接口。其中，存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令，该处理器用于执行该存储器存储的指令，用于执行上述第三方面或第三方面的任意可能的实现方式中的方法。
第十方面，提供了一种计算机存储介质，用于储存为执行上述第一方面或第一方面的任意可能的实现方式中的方法，上述第二方面或第二方面的任意可能的实现方式中的方法，或者上述第三方面或第三方面的任意可能的实现方式中的方法所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
图1示出了本申请实施例一个应用场景的示意图。
图2示出了本申请实施例的一个具体场景示意图。
图3示出了本申请实施例的无线通信的方法的示意性框图。
图4示出了本申请实施例的无线通信的方法的另一示意性框图。
图5示出了本申请实施例的无线通信的方法的再一示意性框图。
图6示出了本申请实施例的无线通信的方法的再一示意性框图。
图7示出了本申请实施例的无线通信的方法的再一示意性框图。
图8示出了本申请实施例的无线通信的装置的示意性框图。
图9示出了本申请实施例的无线通信的装置的另一示意性框图。
图10示出了本申请实施例的无线通信的装置的再一示意性框图。
图11示出了本申请实施例的无线通信的装置的再一示意性框图。
图12示出了本申请实施例的无线通信的装置的再一示意性框图。
图13示出了本申请实施例的无线通信的装置的再一示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
应理解，本申请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，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统或未来的5G系统等。
特别地，本申请实施例的技术方案可以应用于各种基于非正交多址接入技术的通信系统，例如稀疏码多址接入(Sparse Code Multiple Access，SCMA)系统、低密度签名(Low Density Signature，LDS)系统等，当然SCMA系统和LDS系统在通信领域也可以被称为其他名称；进一步地，本申请实施例的技术方案可以应用于采用非正交多址接入技术的多载波传输 系统，例如采用非正交多址接入技术正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)、滤波器组多载波(Filter Bank Multi-Carrier，FBMC)、通用频分复用(Generalized Frequency Division Multiplexing，GFDM)、滤波正交频分复用(Filtered-OFDM，F-OFDM)系统等。
本申请实施例中的终端设备可以指用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等，本申请实施例并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional NodeB，eNB或eNodeB)，还可以是云无线接入网络(Cloud Radio Access Network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
图1是本申请实施例一个应用场景的示意图。图1中的通信系统可以包括终端设备10和网络设备20。网络设备20用于为终端设备10提供通信服务并接入核心网，终端设备10通过搜索网络设备20发送的同步信号、广播信号等而接入网络，从而进行与网络的通信。图1中所示出的箭头可以表示通过终端设备10与网络设备20之间的蜂窝链路进行的上/下行传输。
无线链路控制(Radio Link Control，RLC)层位于分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层和媒体接入控制(Media Access Control，MAC)层之间。它通过服务访问点(Service Access Point，SAP)与PDCP层进行通信，并通过逻辑信道与MAC层进行通信。每个UE的每个逻辑信道都有一个RLC实体。RLC实体从PDCP层接收到的数据，或发往 PDCP层的数据被称作RLC SDU。RLC实体从MAC层接收到的数据，或发往MAC层的数据被称作RLC PDU。
由于本申请实施例是基于LTE的非确认模式(Unacknowledged Mode，UM)中的重排序场景，为了描述方便，下面先结合图2简单描述一下该场景。
UM实体在接收端主要做几件事：(1)对分段的RLC SDU进行重组(reassembly)，以便恢复出原来的RLC SDU并发往PDCP层；(2)对RLC PDU进行重排序(reordering)；(3)检测并丢弃重复包(duplicate detection)。
如果接收端收到的RLC PDU是乱序的，则需要先进行重排序。由于MAC层使用多个混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)进程来处理HARQ，因此乱序到达是不可避免的。乱序到达的RLC PDU会先保存在接收buffer中，直到之前的RLC PDU都已成功接收并递送给PDCP层。
接收端需要检测MAC层是否丢失了某个RLC PDU，并避免过度的重排序延迟。简单地说，接收端只会等待还未收到的RLC PDU一段时间，等不到就不等了。重排序定时器t_Reordering决定了在多长时间内等待一个还未收到的PDU。每个UM实体只有一个t_Reordering。使用该定时器的目的是为了检测MAC层是否丢失了某个RLC PDU，如果在t_Reordering指定的时间内没有收到该PDU，则接收端认为该PDU已经丢失了，且UM实体不会再去尝试接收这些已经丢失了的PDU。
如图2所示，MAC层的HARQ处理导致了RLC PDU以PDU 8、PDU6和PDU 9的顺序到达接收端的RLC层。此时接收端会对接收到的PDU进行重排序处理，并将PDU以PDU 6、PDU 8和PDU 9的顺序保存在接收buffer中。当接收端收到PDU 8时，会启动定时器t_Reordering。由于在该定时器超时之前，PDU 7还没收到，因此接收端认为PDU 7丢失了。接收端在重组RLC SDU时，由于PDU 7的丢失导致了SDU 16和SDU 17的部分分段丢失，从而无法重组出完整的SDU 16和SDU 17，因此SDU 16和SDU 17的已接收分段将被丢弃。SDU 15和SDU 18是完全接收的，所以会被递送给PDCP层。SDU 19的已接收分段会继续放在接收buffer中，直到接收到SDU 19的所有分段(最终也有可能被丢弃)。
在图像处理方面，协议里主要定义了三种帧，分别为帧内编码帧(I  frame)、前向预测编码帧(P frame)以及双向预测内插编码帧(B frame)。I帧通常是每个图像组(Group of picture，GOP)的第一个帧，经过适度地压缩，做为随机访问的参考点，可以当成图像。I帧可以看成是一个图像经过压缩后的产物，自身可以通过视频解压算法解压成一张单独的完整的图片。P帧是通过充分将低于图像序列中前面已编码帧的时间冗余信息来压缩传输数据量的编码图像，也叫预测帧，需要参考其前面的一个I帧或者B帧来生成一张完整的图片。B帧是既考虑与源图像序列前面已编码帧，也顾及源图像序列后面已编码帧之间的时间冗余信息来压缩传输数据量的编码图像，也叫双向预测帧。
在现有方案中，无论是哪一种帧，都属于同一个无线承载，也就是说将I帧、P帧和/或B帧都被同一个RLC实体所处理，采用的重排序机制也是相同，而鉴于不同帧之间的优先级，即重要程度是不同的，因此，需要针对不同的帧采用不同的重排序机制。
应理解，上述是以各种帧类型为例进行描述的，本申请实施例的技术方案并不限于此。
图3示出了本申请实施例的无线通信的方法100的示意性框图。如图3所示，该方法100包括：
S110，接收端确定在第一数据协议单元PDU和第二PDU之间有至少一个PDU未接收到；
S120，该接收端根据该至少一个PDU的数据类型，确定定时器的目标时长；
S130，该接收端启动该定时器，且在该目标时长内等待该至少一个PDU中的每个PDU。
首先需要说明以下几点：
一、本申请实施例的方案既适用于下行链路，又适用于上行链路。换句话说，该接收端可以是终端设备，也可以是网络设备。
二、网络设备可以先配置几个不同的时长。具体地说，网络设备可以对不同数据类型配置相应的时长。以上述帧类型为例，可以为I帧配置时长为100ms，为P帧配置时长为50ms，也就是说，如果是I帧PDU丢失的话，可以在100ms内等待该I帧PDU，如果是P帧PDU丢失的话，可以在50ms内等待该P帧PDU。
三、接收端可以根据相邻两个PDU的SN来判断中间是否有PDU丢失。可选的，有可能丢失一个PDU，也有可能丢失多个PDU。而这两个相邻PDU可以通过接收端的相关变量来表示。具体地，接收端的RLC实体需要维护两个变量，可以是VR(UR)：记录等待重排序的最早的PDU的序列号。VR(UX)：记录触发重排序计时器的PDU的下一PDU的序列号。当定时器启动时，VR(UR)和VR(UX)可以分别记录当前定时器对应的序列号范围内的上边界和下边界。也就是说在这两个变量之间的PDU在定时器结束后处于重排序的过程。
四、本申请实施例提出的PDU的数据类型，可以是上述提到的各种帧类型，也可以是不同业务类型下的数据。例如，低时延和高可靠通信(Ultra-Reliable and Low-Latency Communications，URLLC)业务的重要性可能更高一些，那么接收端可以为该业务下的数据配置时间较长的定时器。而增强移动宽带(Enhanced Mobile Broadband，EMBB)业务比较普通，那么接收端可以为该业务下的数据配置时长较短的定时器等。
五、应理解，本申请实施例的根据该至少一个PDU的数据类型，确定定时器的目标时长，可以是只根据其中该至少一个PDU中的部分PDU的数据类型来确定定时器的目标时长，也可以是根据该至少一个PDU中的全部PDU的数据类型来确定定时器的目标时长。
六、接收端可以根据两个PDU之间的序号不连续来确定之间有一个或多个PDU未接收到。如图2中所述的例子，接收端在接收到PDU 6之后就收到PDU 8，而PDU 6和PDU 8之间的序列号并不连续，接收端可以确定PDU 7丢失了，也就是说，接收端可以确定PDU 7并没有接收到。
七、接收端启动该定时器，且在该目标时长内等待该至少一个PDU中的任一PDU。是指对于该至少一个PDU中的每个PDU，接收端在启动定时器之后都要等待目标时长，若在该目标时长内接收到该至少一个PDU中的某个PDU，则该PDU被正确接收到；若在该目标时长内没有接收到该至少一个PDU中的某一个PDU，那么接收端可以判断该PDU丢失了，接收端可以对于该PDU相关的SDU的其他数据包进行丢弃处理。
因此，本申请实施例的无线通信的方法，接收端根据丢失PDU的数据类型选择定时器的时长，有利于提高无线通信的灵活性。
可选地，在本申请实施例中，该接收端根据该至少一个PDU的数据类 型，确定定时器的目标时长，包括：该接收端根据该至少一个PDU的数据类型，从预设的多个时长中确定该定时器的目标时长。
正如上面的第二点提到的，网络设备可以预先配置多个不同的时长，接收端可以从该多个时长中选择一个作为定时器的目标时长。若接收端是终端设备，发送端是网络设备，那么网络设备可以将预配置的多个时长发送给终端设备，终端设备进而可以根据未接收到的PDU的数据类型，选择一个目标时长。若接收端是网络设备，发送端是终端设备，网络设备在预配置了多个时长之后，不需要发送给终端设备，因为该多个时长是网络设备用来从中根据未接收到的PDU的数据类型来确定定时器的目标时长。
可选地，在本申请实施例中，该接收端根据该至少一个PDU的数据类型，确定定时器的目标时长，包括：该接收端根据该至少一个PDU的数据类型，从预设的多个时长中确定该定时器的目标时长。
可选地，在本申请实施例中，该方法还包括：该接收端确定该至少一个PDU包括第一数据类型的PDU和第二数据类型的PDU；该接收端根据该至少一个PDU的数据类型，确定定时器的目标时长，包括：该接收端将与该第一数据类型对应的时长确定为该定时器的目标时长。
可选地，所述方法还包括：所述接收端确定所述至少一个PDU中的每个PDU的数据类型均为第二数据类型；所述接收端根据所述至少一个PDU的数据类型，确定定时器的目标时长，包括：所述接收端将与所述第二数据类型对应的时长确定为所述定时器的目标时长。
具体地，接收端在确定未接收到的至少一个PDU包括多种数据类型的PDU，接收端可以将与其中某一种数据类型对应的时长作为该至少一个PDU的定时器的时长。例如，若该至少一个PDU包括I帧和P帧，接收端可以直接将与I帧对应的时长确定为定时器的时长。或者若该至少一个PDU的数据类型为同一种类型的PDU，那么接收端可以直接将与该种类型对应的时长作为该至少一个PDU的定时器的时长。
可选地，在本申请实施例中，在接收端确定到某两个PDU之间有多个不同数据类型的PDU时，接收端可以将多个数据类型中数据类型对应的时长中最长的时长作为定时器的时长。
具体地，网络设备可以提前为多种数据类型配置对应的时长。还是以上述帧类型为例，网络设备可以为I帧配置100ms，为P帧配置50ms，为B 帧配置25ms。那么接收端(无论是网络设备还是终端设备)在获取到未接收到的PDU中间有1个I帧，无论接收端是否还有其他帧类型的PDU未接收到，可以直接将未接收到的至少一个PDU的定时器时长设置为100ms。若接收端获取到未接收到的至少一个PDU为同一类型的PDU，接收端可以直接将未接收到的至少一个PDU的定时器时长设置为与该类型对应的时长。例如，接收端在获取到所有未接收到的PDU均为P帧，接收端可以直接将未接收到的至少一个PDU的定时器时长设置为50ms。
应理解，上述均以未接收的至少一个PDU包括两种数据类型的PDU为例进行描述，本申请实施例中的至少一个PDU还可以是三种数据类型的
PDU或以上，同样地，接收端可以将该三种数据类型或以上中数据类型对应的时长中最长的时长作为该至少一个PDU的定时器的时长。
可选地，在本申请实施例中，该第一PDU、该第二PDU和该至少一个PDU中的每个PDU均承载指示域，该指示域用于指示与本PDU的数据类型不同的PDU的位置，该与本PDU的数据类型不同的PDU为在该本PDU之前发送的与该本PDU的序列号最近的PDU，该方法还包括：该接收端根据承载于该第二PDU中的指示域，确定该至少一个PDU的数据类型。
本领域技术人员理解，发送端向接收端发送PDU时通常会携带该PDU的数据类型，如果每个PDU上还携带与自己的数据类型不同的最近PDU的位置，那么接收端在接收到能够确定有未接收到的至少一个PDU的PDU后，就可以根据该PDU所携带的指示与自己数据类型不同的最近PDU的位置，来判断该至少一个PDU的数据类型都有哪些。举例来说，若根据该PDU中的指示确定出来与自己序列号最接近且数据类型不同的PDU的位置在上述第一PDU和第二PDU之外，那么接收端可以确定该至少一个PDU的数据类型全部与第二PDU的数据类型相同，可以将与该第二PDU的数据类型对应的时长确定为该至少一个PDU的定时器的时长。若根据该PDU中的指示确定出来与自己序号最接近且数据类型不同的PDU的位置在该第一PDU和该第二PDU之间，那么接收端可以确定该至少一个PDU的数据类型至少包括该第二PDU的数据类型和确定的与该第二PDU的数据类型不同的数据类型，那么接收端就可以将与该第二PDU的数据类型对应的时长或与该第二PDU的数据类型不同的数据类型对应的时长确定为该至少一个PDU的定时器的目标时长。
可选地，发送端可以在每个要发送的PDU中设置一个附加的RLC header field的值，该field指示了从本PDU往前多少个PDU有一个与本PDU数据类型不同的PDU。发送端在发送RLC PDU时，将该field的值包含在RLC PDU中，一种方式是放在RLC header，例如一个字节，标示从0到255的距离。
可选地，在本申请实施例中，若接收端基于上述方式确定出来未接收的PDU的数据类型包括具体的两种以上的数据类型，那么接收端可以将该确定的多种数据类型中与某一数据类型对应的最大时长确定为该未接收的PDU的定时器的时长。
可选地，在本申请实施例中，该指示域还可以指示比本PDU的数据类型优先级更高且距离本PDU最近的PDU的位置，那么接收端可以直接将该至少一个PDU的定时器的时长设置为与优先级更高的数据类型对应的时长。
下面同样以数据类型为P帧和I帧为例进行说明。具体地，如图4所示，接收端收到了PDU 1，2，3，8，9，接收端在根据VR(UR)和VR(UX)，确定PDU 4、PDU 5、PDU 6以及PDU 7未接收到，假设网络设备提前配置好与I帧对应的时长为100ms，与P帧对应的时长为50ms，接收端通过PDU 8的RLC header判断VR(UR)和VR(UX)之间至少有一个I帧，从而可以启动的t-Reordering使用100ms值。又如图5所示，PDU1，4收到了，接收端通过PDU 4的RLC header判断VR(UR)和VR(UX)之间没有I帧，从而启动的t-Reordering使用50ms值。
可选地，在本申请实施例中，发送端可以在发送PDU之前将接下来将要发送的多个PDU的数据类型通知给接收端，接收端在确定出来至少一个PDU未接收到时，可以根据该至少一个PDU的序列号对照发送端发送的多个连续的PDU的数据类型，来确定该至少一个PDU中每个PDU的数据类型。例如，发送端可以每10个PDU向接收端发送一次待发送的10个PDU的数据类型，那么当接收端确定出来PDU4～PDU6未接收到之后，根据之前发送端发送的该10个PDU的数据类型，即可确定出来PDU4～PDU6的数据类型。
可选地，在本申请实施例中，该接收端为终端设备，该方法还包括：该终端设备接收网络设备发送的该多个时长。
可选地，在本申请实施例中，该方法还包括：若该定时器超时，该接收 端对在该目标时长内接收到的该至少一个PDU中的所有PDU进行组包并更新重排序窗口。
上述提及网络设备可以为终端设备配置与多个数据类型对应的时长，并将该多个时长发送给终端设备。并且网络设备可以向终端设备指示一个默认的时长。也就是说，若不采用本申请实施例的技术方案时，接收端可以默认采用网络设备选择的时长作为定时器的时长。
应理解，上述接收端的方案既适用于终端设备，也适用于网络设备，本申请实施例对此并不构成限定。
图6示出了本申请实施例的无线通信的方法200的示意性框图。如图6所示，该方法200包括：
S210，接收端确定在第一数据协议单元PDU和第二PDU之间有多种数据类型的多个PDU未接收到；
S220，该接收端根据该多种数据类型，在该多个定时器的时长内等待该多个PDU。
S230，该接收端同时启动该多个定时器，分别在该多个定时器的每个定时器的时长内等待该多个PDU中的对应数据类型的PDU。
具体地，在第一PDU和第二PDU之间有多种类型的PDU未接收到时，接收端可以设置与多种数据类型一一对应的定时器，接收端可以同时启动该多个定时器，并在每个定时器的时长内等待对应数据类型的PDU。
同样地，下面以丢失的PDU的数据类型为I帧和P帧为例进行描述。假设网络设备预先配置的I帧对应的时长为100ms，与P帧对应的时长为50ms，下面分以下几种情况描述本申请实施例的方案：
1、接收端判断在50ms内接收到在第一PDU和第二PDU之间的所有丢失PDU，可以立即结束50ms的定时器和100ms的定时器。
2、接收端判断在50ms内接收到所有数据类型为P帧的PDU，接收端可以立即结束50ms的定时器，接收端进一步再判断在50ms-100ms之间接收到所有数据类型为I帧的PDU，那么接收端立即可以结束100ms的定时器。
3、接收端判断在50ms内接收到所有数据类型为I帧的PDU，接收器可以立即结束100ms的定时器，在50ms内未接收完所有数据类型为P帧的PDU，那么50ms的定时器超时。
4、接收端判断在50ms内未接收完所有数据类型为P帧的PDU，也未 接收到所有数据类型为I帧的PDU，接收端在50ms-100ms内接收到数据类型为P帧的PDU并未接收到数据类型为I帧的PDU，那么接收端可以认为50ms的定时器和100ms的定时器均超时，但是在50ms-100ms内接收到的P帧的PDU为有效的。如果接收端在50ms-100ms内接收到所有I帧的PDU但并未接收完所有P帧的PDU，那么接收端立即停止100ms的定时器，并认为在接收完所有I帧的PDU之前的接收的所有P帧的PDU是有效的。
因此，本申请实施例的无线通信的方法，接收端对不同的数据类型启用不同的定时器，有利于提高无线通信的灵活性。
可选地，在本申请实施例中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该方法还包括：若与该第一数据类型对应的定时器超时，该接收端对在与该第一数据类型对应的定时器的时长内接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
可选地，在本申请实施例中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该方法还包括：若与该第二数据类型对应的定时器超时且该接收端在与该第二数据类型对应的定时器超时之前接收到该多个PDU中第一数据类型的所有PDU，该接收端对在与该第二数据类型对应的定时器的时长内接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
可选地，在本申请实施例中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该方法还包括：若与该第二数据类型对应的定时器超时且该接收端在与该第一数据类型对应的定时器超时之前接收到该多个PDU中的第一数据类型的所有PDU，该接收端对在结束与该第一数据类型对应的定时器之前接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
可选地，在本申请实施例中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该方法还包括：若该接收端在与该第一数据类型对应的定时器超时之前接收到该多个PDU中所有PDU，该接收端对在结束与该第一数据类型对应的定时器之前或结束与该第二数据类型对应的定时器之前 在接收到的该多个PDU进行组包并更新重排序窗口。
可选的，在本申请实施例中，该第一数据类型的优先级高于该第二数据类型的优先级。
应理解，上述仅仅是以4种可能存在的情况为例进行了描述，本申请实施例并不限于此。
可选地，在本申请实施例中，该第一PDU、该第二PDU和该多个PDU中的每个PDU均承载指示域，该指示域用于指示与本PDU的数据类型不同的PDU的位置，该与本PDU的数据类型不同的PDU为在该本PDU之前发送的与该本PDU的序列号最近的PDU，该方法还包括：该接收端根据承载于该第二PDU中的指示域，确定该多个PDU的数据类型。
可选地，在本申请实施例中，该多种数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型中的至少两种。
应理解，方法200中的发送端与接收端的交互及相关特性、功能等与方法100中的接收端的相关特性、功能相应。为了简洁，在此不再赘述。为了简洁，在此不再赘述。
图7示出了本申请实施例的无线通信的方法300的示意性框图。如图7所示，该方法300包括：
S310，发送端向接收端发送多个数据协议单元PDU，该多个PDU中的每个PDU包括指示域，该指示域用于指示与本PDU的数据类型不同的PDU的位置，该与本PDU的数据类型不同的PDU为在该本PDU之前发送的与该本PDU的序列号最近的PDU，以便于该接收端确定未接收到的至少一个PDU的数据类型，该多个PDU包括该至少一个PDU。
因此，本申请实施例的无线通信的方法，通过向发送端指示用于确定未接收到的至少一个PDU的指示信息，使得接收端对不同数据类型的PDU选择不同的定时器的时长，有利于提高无线通信的灵活性。
可选地，在本申请实施例中，发送端还可以在发送多个PDU之前，向接收端发送该多个PDU的数据类型，那么当接收端确定出来该多个PDU中的至少一个PDU未接收到之后，接收端即可确定出来未接收到的至少一个PDU的数据类型都有哪些。从而接收端可以根据确定的数据类型进一步确定该至少一个PDU的定时器的时长。
可选地，在本申请实施例中，该发送端为网络设备，该接收端为终端设 备，该方法还包括：该网络设备向该终端设备发送多个时长，以便于该终端设备根据该至少一个PDU的数据类型，从该多个时长中确定定时器的目标时长，该定时器的目标时长为该终端设备等待该至少一个PDU中每个PDU的最长时间。
可选地，在本申请实施例中，所述数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
应理解，发送端描述的发送端与接收端的交互及相关特性、功能等与接收端的相关特性、功能相应。也就是说，发送端向接收端发送什么信息，接收端相应地就会接收什么信息。为了简洁，在此不再赘述。
还应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
图8示出了本申请实施例的无线通信的装置400的示意性框图。如图8所示，该装置400包括：
第一确定单元410，用于确定在第一数据协议单元PDU和第二PDU之间有至少一个PDU未接收到；
第二确定单元420，用于根据所述至少一个PDU的数据类型，确定定时器的目标时长；
等待单元430，用于启动所述定时器，且在所述目标时长内等待所述至少一个PDU。
因此，本申请实施例的无线通信的装置，根据丢失PDU的数据类型选择定时器的时长，有利于提高无线通信的灵活性。
可选地，在本申请实施例中，所述第二确定单元420具体用于：
根据所述至少一个PDU的数据类型，从预设的多个时长中确定所述定时器的目标时长。
可选地，在本申请实施例中，所述装置还包括：
第三确定单元440，用于确定所述至少一个PDU包括第一数据类型的PDU和第二数据类型的PDU；
所述第二确定单元420具体用于：
将与所述第一数据类型对应的时长确定为所述定时器的目标时长。
可选地，在本申请实施例中，所述装置还包括：
第三确定单元440，用于确定所述至少一个PDU中的每个PDU的数据类型均为第二数据类型；
所述第二确定单元420具体用于：
将与所述第二数据类型对应的时长确定为所述定时器的目标时长。
可选地，在本申请实施例中，所述第一数据类型的优先级高于所述第二数据类型，与所述第一数据类型对应的时长大于与所述第二数据类型对应的时长。
可选地，在本申请实施例中，所述第一PDU、所述第二PDU和所述至少一个PDU中的每个PDU均承载指示域，所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，所述装置还包括：
第四确定单元450，用于根据承载于所述第二PDU中的指示域，确定所述至少一个PDU的数据类型。
可选地，在本申请实施例中，所述装置为终端设备，所述装置400还包括：
接收单元460，用于接收网络设备发送的所述多个时长。
可选地，在本申请实施例中，所述数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
可选地，在本申请实施例中，所述装置400还包括：处理单元470，用于若所述定时器超时，对在所述目标时长内接收到的所述至少一个PDU进行组包并更新重排序窗口。
应理解，根据本申请实施例的无线通信的装置400可对应于本申请方法实施例中的接收端，并且装置400中的各个单元的上述和其它操作和/或功能分别为了实现图3至图5所示方法100中终端设备的相应流程，为了简洁，在此不再赘述。
图9示出了本申请实施例的无线通信的装置500的示意性框图。如图9所示，该装置500包括：
第一确定单元510，用于确定在第一数据协议单元PDU和第二PDU之间有多种数据类型的多个PDU未接收到；
第二确定单元520，用于根据该多种数据类型，确定与该多种数据类型 一一对应的多个定时器的时长；
等待单元530，用于同时启动该多个定时器，在该多个定时器的时长内等待该多个PDU。
可选地，在本申请实施例中，该多种数据类型包括第一数据类型和第二数据类型，与该第一数据类型对应的定时器的时长大于与该第二数据类型对应的定时器的时长，该装置还包括：处理单元540，用于若与该第一数据类型对应的定时器超时，对在与该第一数据类型对应的定时器的时长内接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
可选地，在本申请实施例中，该处理单元540还可以用于：若与该第二数据类型对应的定时器超时且该装置在与该第二数据类型对应的定时器超时之前接收到该多个PDU中第一数据类型的所有PDU，对在与该第二数据类型对应的定时器的时长内接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
可选地，在本申请实施例中，该处理单元540还可以用于：若与该第二数据类型对应的定时器超时且该装置在与该第一数据类型对应的定时器超时之前接收到该多个PDU中的第一数据类型的所有PDU，对在结束与该第一数据类型对应的定时器之前接收到的该多个PDU中的所有PDU进行组包并更新重排序窗口。
可选地，在本申请实施例中，该第一数据类型的优先级高于该第二数据类型的优先级。
可选地，在本申请实施例中，该第一PDU、该第二PDU和该多个PDU中的每个PDU均承载指示域，该指示域用于指示与本PDU的数据类型不同的PDU的位置，该与本PDU的数据类型不同的PDU为在该本PDU之前发送的与该本PDU的序列号最近的PDU，该装置500还包括：第三确定单元550，用于根据承载于该第二PDU中的指示域，确定该多个数据类型。
可选地，在本申请实施例中，该多种数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型中的至少两种。
应理解，根据本申请实施例的无线通信的装置500可对应于本申请方法实施例中的发送端，并且装置500中的各个单元的上述和其它操作和/或功能分别为了实现图6所示方法200中终端设备的相应流程，为了简洁，在此不再赘述。
图10示出了本申请实施例的无线通信的装置600的示意性框图。如图10所示，该装置600包括：
第一发送单元610，用于向接收端发送多个数据协议单元PDU，所述多个PDU中的每个PDU包括指示域，所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，以便于所述接收端确定未接收到的至少一个PDU的数据类型，所述多个PDU包括所述至少一个PDU。
因此，本申请实施例的无线通信的装置，通过向发送端指示用于确定未接收到的至少一个PDU的指示信息，使得接收端对不同数据类型的PDU选择不同的定时器的时长，有利于提高无线通信的灵活性。
可选地，在本申请实施例中，所述装置为网络设备，所述接收端为终端设备，所述装置600还包括：
第二发送单元620，用于向所述终端设备发送多个时长，以便于所述终端设备根据所述至少一个PDU的数据类型，从所述多个时长中确定定时器的目标时长，所述定时器的目标时长为所述终端设备等待所述至少一个PDU中每个PDU的最长时间。
可选地，在本申请实施例中，所述数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
应理解，根据本申请实施例的无线通信的装置600可对应于本申请方法实施例中的发送端，并且装置600中的各个单元的上述和其它操作和/或功能分别为了实现图7所示方法300中终端设备的相应流程，为了简洁，在此不再赘述。
如图11所示，本申请实施例还提供了一种无线通信的装置700，该装置700可以是图8中的装置400，其能够用于执行与图3中方法100对应的接收端的内容。该装置700包括：输入接口710、输出接口720、处理器730以及存储器740，该输入接口710、输出接口720、处理器730和存储器740可以通过总线系统相连。所述存储器740用于存储包括程序、指令或代码。所述处理器730，用于执行所述存储器740中的程序、指令或代码，以控制输入接口710接收信号、控制输出接口720发送信号以及完成前述方法实施例中的操作。
因此，本申请实施例的无线通信的装置，根据丢失PDU的数据类型选择定时器的时长，有利于提高无线通信的灵活性。
应理解，在本申请实施例中，该处理器730可以是中央处理单元(Central Processing Unit，CPU)，该处理器730还可以是其他通用处理器、数字信号处理器、专用集成电路、现成可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。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。
该存储器740可以包括只读存储器和随机存取存储器，并向处理器730提供指令和数据。存储器740的一部分还可以包括非易失性随机存取存储器。例如，存储器740还可以存储设备类型的信息。
在实现过程中，上述方法的各内容可以通过处理器730中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的内容可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或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740，处理器730读取存储器740中的信息，结合其硬件完成上述方法的内容。为避免重复，这里不再详细描述。
一个具体的实施方式中，装置400中的第一确定单元410、第二确定单元420、等待单元430、第三确定单元440、第四确定单元450以及重排序单元470可以由图11中的处理器730实现，装置400中的接收单元460可以由图11中的输入接口710实现。
如图12所示，本申请实施例还提供了一种无线通信的装置800，该装置800可以是图9中的装置500，其能够用于执行与图6中方法200对应的发送端的内容。该装置800包括：输入接口810、输出接口820、处理器830以及存储器840，该输入接口810、输出接口820、处理器830和存储器840可以通过总线系统相连。所述存储器840用于存储包括程序、指令或代码。所述处理器830，用于执行所述存储器840中的程序、指令或代码，以控制输入接口810接收信号、控制输出接口820发送信号以及完成前述方法实施例中的操作。
因此，本申请实施例的无线通信的装置，对不同数据类型的PDU选择不同的定时器的时长，有利于提高无线通信的灵活性。
应理解，在本申请实施例中，该处理器830可以是中央处理单元(Central Processing Unit，CPU)，该处理器830还可以是其他通用处理器、数字信号处理器、专用集成电路、现成可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。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。
该存储器840可以包括只读存储器和随机存取存储器，并向处理器830提供指令和数据。存储器840的一部分还可以包括非易失性随机存取存储器。例如，存储器840还可以存储设备类型的信息。
在实现过程中，上述方法的各内容可以通过处理器830中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的内容可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或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840，处理器830读取存储器840中的信息，结合其硬件完成上述方法的内容。为避免重复，这里不再详细描述。
一个具体的实施方式中，装置500中的第一确定单元510、第二确定单元520、等待单元530、重排序单元540和第三确定单元550可以由图12中的输出接口820实现。
如图13所示，本申请实施例还提供了一种无线通信的装置900，该装置800可以是图10中的装置600，其能够用于执行与图7中方法300对应的发送端的内容。该装置900包括：输入接口910、输出接口920、处理器930以及存储器940，该输入接口910、输出接口920、处理器930和存储器940可以通过总线系统相连。所述存储器940用于存储包括程序、指令或代码。所述处理器930，用于执行所述存储器940中的程序、指令或代码，以控制输入接口910接收信号、控制输出接口920发送信号以及完成前述方法实施例中的操作。
因此，本申请实施例的无线通信的装置，通过向发送端指示用于确定未接收到的至少一个PDU的指示信息，使得接收端对不同数据类型的PDU选择不同的定时器的时长，有利于提高无线通信的灵活性。
应理解，在本申请实施例中，该处理器930可以是中央处理单元(Central Processing Unit，CPU)，该处理器930还可以是其他通用处理器、数字信号 处理器、专用集成电路、现成可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。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。
该存储器940可以包括只读存储器和随机存取存储器，并向处理器930提供指令和数据。存储器940的一部分还可以包括非易失性随机存取存储器。例如，存储器940还可以存储设备类型的信息。
在实现过程中，上述方法的各内容可以通过处理器930中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的内容可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或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940，处理器930读取存储器940中的信息，结合其硬件完成上述方法的内容。为避免重复，这里不再详细描述。
一个具体的实施方式中，装置600中的第一发送单元610和第二发送单元620可以由图13中的输出接口620实现。
本申请实施例还提出了一种计算机可读存储介质，该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行图3、图6或图7所示实施例的方法。
本申请实施例还提出了一种计算机程序，该计算机程序包括指令，当该计算机程序被计算机执行时，使得计算机可以执行图3、图6或图7所示实施例的方法的相应流程。
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申请的范围。
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，该单元的划分，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。
该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，在本申请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。
该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，本申请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)执行本申请各个实施例该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(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请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申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应该以权利要求的保护范围为准。

Claims (38)

  1. 一种无线通信的方法，其特征在于，包括：
    接收端确定在第一数据协议单元PDU和第二PDU之间有至少一个PDU未接收到；
    所述接收端根据所述至少一个PDU的数据类型，确定定时器的目标时长；
    所述接收端启动所述定时器，且在所述目标时长内等待所述至少一个PDU中的每个PDU。
  2. 根据权利要求1所述的方法，其特征在于，所述接收端根据所述至少一个PDU的数据类型，确定定时器的目标时长，包括：
    所述接收端根据所述至少一个PDU的数据类型，从预设的多个时长中确定所述定时器的目标时长。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述接收端确定所述至少一个PDU包括第一数据类型的PDU和第二数据类型的PDU；
    所述接收端根据所述至少一个PDU的数据类型，确定定时器的目标时长，包括：
    所述接收端将与所述第一数据类型对应的时长确定为所述定时器的目标时长。
  4. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述接收端确定所述至少一个PDU中的每个PDU的数据类型均为第二数据类型；
    所述接收端根据所述至少一个PDU的数据类型，确定定时器的目标时长，包括：
    所述接收端将与所述第二数据类型对应的时长确定为所述定时器的目标时长。
  5. 根据权利要求3所述的方法，其特征在于，所述第一数据类型的优先级高于所述第二数据类型，与所述第一数据类型对应的时长大于与所述第二数据类型对应的时长。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第一PDU、所述第二PDU和所述至少一个PDU中的每个PDU均承载指示域， 所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，所述方法还包括：
    所述接收端根据承载于所述第二PDU中的指示域，确定所述至少一个PDU的数据类型。
  7. 根据权利要求2所述的方法，其特征在于，所述接收端为终端设备，所述方法还包括：
    所述终端设备接收网络设备发送的所述多个时长。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述方法还包括：
    若所述定时器超时，所述接收端对在所述目标时长内接收到的所述至少一个PDU中的所有PDU进行组包并更新重排序窗口。
  10. 一种无线通信的方法，其特征在于，包括：
    接收端确定在第一数据协议单元PDU和第二PDU之间有多种数据类型的多个PDU未接收到；
    所述接收端根据所述多种数据类型，确定与所述多种数据类型一一对应的多个定时器的时长；
    所述接收端同时启动所述多个定时器，在所述多个定时器的时长内等待所述多个PDU。
  11. 根据权利要求10所述的方法，其特征在于，所述多种数据类型包括第一数据类型和第二数据类型，与所述第一数据类型对应的定时器的时长大于与所述第二数据类型对应的定时器的时长，所述方法还包括：
    若与所述第一数据类型对应的定时器超时，所述接收端对在与所述第一数据类型对应的定时器的时长内接收到的所述多个PDU中的所有PDU进行组包并更新重排序窗口。
  12. 根据权利要求10所述的方法，其特征在于，所述多种数据类型包括第一数据类型和第二数据类型，与所述第一数据类型对应的定时器的时长大于与所述第二数据类型对应的定时器的时长，所述方法还包括：
    若与所述第二数据类型对应的定时器超时且所述接收端在与所述第二 数据类型对应的定时器超时之前接收到所述多个PDU中第一数据类型的所有PDU，所述接收端对在与所述第二数据类型对应的定时器的时长内接收到的所述多个PDU中的所有PDU进行组包并更新重排序窗口。
  13. 根据权利要求10所述的方法，其特征在于，所述多种数据类型包括第一数据类型和第二数据类型，与所述第一数据类型对应的定时器的时长大于与所述第二数据类型对应的定时器的时长，所述方法还包括：
    若与所述第二数据类型对应的定时器超时且所述接收端在与所述第一数据类型对应的定时器超时之前接收到所述多个PDU中的第一数据类型的所有PDU，所述接收端对在结束与所述第一数据类型对应的定时器之前接收到的所述多个PDU中的所有PDU进行组包并更新重排序窗口。
  14. 根据权利要求11至13中任一项所述的方法，其特征在于，所述第一PDU、所述第二PDU和所述多个PDU中的每个PDU均承载指示域，所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，所述方法还包括：
    所述接收端根据承载于所述第二PDU中的指示域，确定所述多种数据类型。
  15. 根据权利要求11至14中任一项所述的方法，其特征在于，所述第一数据类型的优先级高于所述第二数据类型的优先级。
  16. 根据权利要求10至15中任一项所述的方法，其特征在于，所述多种数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型中的至少两种。
  17. 一种无线通信的方法，其特征在于，包括：
    发送端向接收端发送多个数据协议单元PDU，所述多个PDU中的每个PDU包括指示域，所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，以便于所述接收端确定未接收到的至少一个PDU的数据类型，所述多个PDU包括所述至少一个PDU。
  18. 根据权利要求17所述的方法，其特征在于，所述发送端为网络设备，所述接收端为终端设备，所述方法还包括：
    所述网络设备向所述终端设备发送多个时长，以便于所述终端设备根据 所述至少一个PDU的数据类型，从所述多个时长中确定定时器的目标时长，所述定时器的目标时长为所述终端设备等待所述至少一个PDU中每个PDU的最长时间。
  19. 根据权利要求17或18所述的方法，其特征在于，所述数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
  20. 一种无线通信的装置，其特征在于，所述装置包括：
    第一确定单元，用于确定在第一数据协议单元PDU和第二PDU之间有至少一个PDU未接收到；
    第二确定单元，用于根据所述至少一个PDU的数据类型，确定定时器的目标时长；
    等待单元，用于启动所述定时器，且在所述目标时长内等待所述至少一个PDU。
  21. 根据权利要求20所述的装置，其特征在于，所述第二确定单元具体用于：
    根据所述至少一个PDU的数据类型，从预设的多个时长中确定所述定时器的目标时长。
  22. 根据权利要求20或21所述的装置，其特征在于，所述装置还包括：
    第三确定单元，用于确定所述至少一个PDU包括第一数据类型的PDU和第二数据类型的PDU；
    所述第二确定单元具体用于：
    将与所述第一数据类型对应的时长确定为所述定时器的目标时长。
  23. 根据权利要求20或21所述的装置，其特征在于，所述装置还包括：
    第三确定单元，用于确定所述至少一个PDU中的每个PDU的数据类型均为第二数据类型；
    所述第二确定单元具体用于：
    将与所述第二数据类型对应的时长确定为所述定时器的目标时长。
  24. 根据权利要求22所述的装置，其特征在于，所述第一数据类型的优先级高于所述第二数据类型，与所述第一数据类型对应的时长大于与所述第二数据类型对应的时长。
  25. 根据权利要求20至24中任一项所述的装置，其特征在于，所述第一PDU、所述第二PDU和所述至少一个PDU中的每个PDU均承载指示域， 所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，所述装置还包括：
    第四确定单元，用于根据承载于所述第二PDU中的指示域，确定所述至少一个PDU的数据类型。
  26. 根据权利要求21所述的装置，其特征在于，所述装置为终端设备，所述装置还包括：
    接收单元，用于接收网络设备发送的所述多个时长。
  27. 根据权利要求20至26中任一项所述的装置，其特征在于，所述数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
  28. 根据权利要求20至27中任一项所述的装置，其特征在于，所述装置还包括：
    处理单元，用于若所述定时器超时，对在所述目标时长内接收到的所述至少一个PDU进行组包并更新重排序窗口。
  29. 一种无线通信的装置，其特征在于，所述装置包括：
    第一确定单元，用于确定在第一数据协议单元PDU和第二PDU之间有多种数据类型的多个PDU未接收到；
    第二确定单元，用于根据所述多种数据类型，确定与所述多种数据类型一一对应的多个定时器的时长；
    等待单元，用于同时启动所述多个定时器，在所述多个定时器的时长内等待所述多个PDU。
  30. 根据权利要求29所述的装置，其特征在于，所述多种数据类型包括第一数据类型和第二数据类型，与所述第一数据类型对应的定时器的时长大于与所述第二数据类型对应的定时器的时长，所述装置还包括：
    处理单元，用于若与所述第一数据类型对应的定时器超时，对在与所述第一数据类型对应的定时器的时长内接收到的所述多个PDU中的所有PDU进行组包并更新重排序窗口。
  31. 根据权利要求29所述的装置，其特征在于，所述多种数据类型包括第一数据类型和第二数据类型，与所述第一数据类型对应的定时器的时长大于与所述第二数据类型对应的定时器的时长，所述装置还包括：
    处理单元，用于若与所述第二数据类型对应的定时器超时且所述装置在与所述第二数据类型对应的定时器超时之前接收到所述多个PDU中第一数据类型的所有PDU，对在与所述第二数据类型对应的定时器的时长内接收到的所述多个PDU中的所有PDU进行组包并更新重排序窗口。
  32. 根据权利要求29所述的装置，其特征在于，所述多种数据类型包括第一数据类型和第二数据类型，与所述第一数据类型对应的定时器的时长大于与所述第二数据类型对应的定时器的时长，所述装置还包括：
    处理单元，用于若与所述第二数据类型对应的定时器超时且所述装置在与所述第一数据类型对应的定时器超时之前接收到所述多个PDU中的第一数据类型的所有PDU，对在结束与所述第一数据类型对应的定时器之前接收到的所述多个PDU中的所有PDU进行组包并更新重排序窗口。
  33. 根据权利要求30至32中任一项所述的装置，其特征在于，所述第一PDU、所述第二PDU和所述多个PDU中的每个PDU均承载指示域，所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，所述装置还包括：
    第三确定单元，用于根据承载于所述第二PDU中的指示域，确定所述多种数据类型。
  34. 根据权利要求30至33中任一项所述的装置，其特征在于，所述第一数据类型的优先级高于所述第二数据类型的优先级。
  35. 根据权利要求29至34中任一项所述的装置，其特征在于，所述多种数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型中的至少两种。
  36. 一种无线通信的装置，其特征在于，所述装置包括：
    第一发送单元，用于向接收端发送多个数据协议单元PDU，所述多个PDU中的每个PDU包括指示域，所述指示域用于指示与本PDU的数据类型不同的PDU的位置，所述与本PDU的数据类型不同的PDU为在所述本PDU之前发送的与所述本PDU的序列号最近的PDU，以便于所述接收端确定未接收到的至少一个PDU的数据类型，所述多个PDU包括所述至少一个PDU。
  37. 根据权利要求36所述的装置，其特征在于，所述装置为网络设备，所述接收端为终端设备，所述装置还包括：
    第二发送单元，用于向所述终端设备发送多个时长，以便于所述终端设备根据所述至少一个PDU的数据类型，从所述多个时长中确定定时器的目标时长，所述定时器的目标时长为所述终端设备等待所述至少一个PDU中每个PDU的最长时间。
  38. 根据权利要求36或37所述的装置，其特征在于，所述数据类型为帧内编码帧类型、前向预测编码帧类型或双向预测内插编码帧类型。
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