WO2018103637A1 - Procédé de traitement de données, dispositif d'envoi et dispositif de réception - Google Patents

Procédé de traitement de données, dispositif d'envoi et dispositif de réception Download PDF

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Publication number
WO2018103637A1
WO2018103637A1 PCT/CN2017/114636 CN2017114636W WO2018103637A1 WO 2018103637 A1 WO2018103637 A1 WO 2018103637A1 CN 2017114636 W CN2017114636 W CN 2017114636W WO 2018103637 A1 WO2018103637 A1 WO 2018103637A1
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Prior art keywords
mac pdus
data packets
mac
receiving device
transmitting device
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PCT/CN2017/114636
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English (en)
Chinese (zh)
Inventor
权威
张戬
唐珣
李秉肇
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities

Definitions

  • Embodiments of the present invention relate to the field of wireless communication technologies, and, more particularly, to a method, a terminal device, and a network side device for data processing.
  • the user plane protocol stack includes a packet data convergence layer protocol PDCP layer, a radio link control RLC layer, a medium access control MAC layer, a physical PHY layer, and the like.
  • the main functions of the PDCP layer include encryption and decryption, header compression and de-head compression, reordering during handover or multiple connections, and retransmission of PDCP PDUs/SDUs.
  • the main functions of the RLC layer include segmentation, concatenation, reordering, and ARQ retransmission.
  • the main functions of the MAC layer include multiplexing, scheduling, HARQ, DRX, random access (Random Access (RA), etc.).
  • the main function of the PHY layer is to add CRC to the MAC PDU sent by the MAC layer, coding, modulation, resource mapping, and the like.
  • the corresponding layer of the receiving device performs the opposite action.
  • the sending device is based on a scheduling command, and the MAC layer separately requests data from the RLC layer corresponding to the resource notified in the scheduling command; the RLC layer forms multiple RLC PDUs according to the requirement, and sends the same To the MAC layer; the MAC layer encapsulates multiple RLC PDUs of the RLC layer and other possible control elements, such as MAC CE, into a MAC PDU and sends it to the PHY layer.
  • the PHY layer processes the MAC PDU, such as adding CRC, encoding, resource mapping, etc., and finally sends the processed information through the air interface.
  • the layers of the corresponding receiving device perform the opposite actions.
  • the requirements for delay are getting higher and higher, which involves comprehensive optimization of the processing flow.
  • the scheduling of the main data processing layer in the above process is not flexible enough, so that the corresponding resources are not fully scheduled and cannot meet the requirements of low latency.
  • Embodiments of the present invention provide a data processing method, a transmitting device, and a receiving device to improve data processing speed.
  • an embodiment of the present application provides a data processing method and a transmitting device and a receiving device using the same.
  • the method includes the transmitting device determining a plurality of media access control data packet MAC PDUs, and processing the MAC PDU to obtain a plurality of data packets, and transmitting the plurality of data packets to the receiving device in sequence using a transmission time interval TTI, wherein one The MAC PDU corresponds to one packet.
  • the receiving device sequentially receives the plurality of data packets in one TTI and processes them to obtain a plurality of MAC PDUs.
  • the transmitting device and the receiving device can use a smaller granularity MAC PDU, so that the scheduling for the MAC PDU is more flexible, thereby meeting the requirement of low latency.
  • the time between receiving the uplink grant and transmitting the corresponding uplink data can be reduced.
  • the multiple MAC PDUs are for the same terminal device.
  • the sequentially includes, one by one, one by one in chronological order.
  • the order of each data packet is not limited.
  • the so-called one after the other includes: the case where each data packet is connected one after the other, and also includes the case that there are other data or time periods in the middle of a certain data packet.
  • the one TTI is in a mapping relationship with the multiple MAC PDUs.
  • the mapping relationship includes that a plurality of data packets generated after the processing of the multiple MAC PDUs are sequentially sent or received in the TTI.
  • the mapping relationship may be agreed upon by both parties before communication or by signaling. It may be determined by the transmitting device, or may be determined by the receiving device, and may be notified by the necessary notification signaling.
  • the form of the notification can be either explicit or implicit.
  • the implicit mode means that in the notification signaling, there is no information indicating that there is a corresponding characteristic.
  • the data processing process for the MAC PDU may be parallel. That is, in the process of processing a certain MAC PDU, the second MAC PDU is still processed, and the two MAC PDUs have the mapping relationship. Through parallel processing, results can be obtained faster and data processing speed can be improved.
  • the encapsulation order of the data packets is consistent with the order of sending the data packets.
  • the order of receiving the corresponding data packets is consistent with the order of decapsulation.
  • the processing sequence of the data packet is consistent with the order of sending the data packet.
  • the order of processing of the corresponding data packets is consistent with the order of receiving the data packets.
  • an embodiment of the present invention provides a transmitting device.
  • the sending device includes: a processing unit, configured to determine a plurality of media access control data packet MAC PDUs; the processing unit is further configured to process the multiple MAC PDUs to obtain multiple data packets, where one MAC PDU corresponds to one a data packet; the transmitting unit sequentially transmits the plurality of data packets to the receiving device by using a transmission time interval TTI.
  • TTI transmission time interval
  • the sending device further includes: a receiving unit, configured to receive a feedback message, the feedback message indicating whether at least one of the plurality of data packets is correctly received; the processing unit is further configured to: A retransmission mechanism is initiated in response to the feedback message.
  • the response speed can be improved by a timely retransmission mechanism.
  • the sending device is a terminal device, and further includes: the processing unit, configured to receive one or more scheduling commands, where the one or more scheduling commands are used to indicate that the sending device uses And transmitting, by the processing unit, the plurality of MAC PDUs in response to the one or more scheduling commands.
  • the scheduling command Through the scheduling command, the signaling transmission mode can be clarified.
  • the processing unit performs resource mapping (RESOURCE-MAPPING) on the one carrier to obtain the plurality of data packets, wherein one MAC PDU performs resource mapping.
  • resource mapping (RESOURCE-MAPPING)
  • the parallel processing of data packets realized by resource mapping can further improve the data processing speed.
  • an embodiment of the present invention provides a receiving device.
  • the receiving device includes: a receiving unit, configured to sequentially receive a plurality of data packets from the sending device by using one transmission time interval TTI; and a processing unit, configured to: Processing the plurality of data packets, and obtaining a plurality of MAC PDUs based on the processed plurality of data packets, wherein one of the MAC PDUs corresponds to one data packet.
  • the processing unit is further configured to determine one or more scheduling commands, where the one or more scheduling commands are used to instruct the sending device to use a sending time interval TTI The plurality of data packets are sequentially sent; the receiving device further includes a sending unit, configured to send the one or more scheduling commands, where the one or more scheduling commands correspond to the multiple MAC PDUs.
  • the scheduling command the signaling transmission mode can be clarified.
  • the processing unit is further configured to process the plurality of MAC PDUs in parallel to obtain a plurality of data packets, wherein one MAC PDU performs a resource mapping.
  • the parallel processing of data packets realized by resource mapping can further improve the data processing speed.
  • the sending device further includes: the processing unit, configured to process the plurality of data packets, including: the processing unit, configured to confirm whether at least one of the plurality of data packets is
  • the receiving unit is configured to start a retransmission mechanism according to the confirmation result.
  • the response speed can be improved by a timely retransmission mechanism.
  • an embodiment of the present invention provides a data processing method.
  • the data processing method includes: the transmitting device determines a plurality of media access control data packet MAC PDUs; the transmitting device processes the plurality of MAC PDUs to obtain a plurality of data packets, wherein one of the MAC PDUs corresponds to one data packet; The device sequentially transmits the plurality of data packets to the receiving device using a transmission time interval TTI.
  • TTI transmission time interval
  • an embodiment of the present invention provides a data processing method.
  • the data processing method includes: the receiving device sequentially receives a plurality of data packets from the transmitting device using one transmission time interval TTI; the receiving device processes the plurality of data packets; and the receiving device is based on the processed multiple data
  • the packet obtains multiple media access control packet MAC PDUs, one of which corresponds to one data packet.
  • an embodiment of the present invention provides a computer readable storage medium storing instructions for implementing a method for use by the transmitting device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer readable storage medium storing instructions for implementing the method for use by the receiving device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a transmitting device, where the transmitting device includes a memory and a processor, where the memory includes the computer readable storage medium of the above aspect, and the processor is configured to perform the storage of the computer readable storage medium.
  • the instruction to send the method used by the device includes a memory and a processor, where the memory includes the computer readable storage medium of the above aspect, and the processor is configured to perform the storage of the computer readable storage medium. The instruction to send the method used by the device.
  • an embodiment of the present invention provides a receiving device, where the receiving device includes a memory and a processor, where the memory includes the computer readable storage medium of the eleventh aspect, the processor is configured to execute the computer readable storage medium for storage An instruction to implement the method used by the receiving device described above.
  • an embodiment of the present invention provides a communication system, where the system includes the transmitting device and the receiving device described in the foregoing aspects.
  • the data processing speed can be improved.
  • 1 is a schematic diagram of a user plane protocol stack.
  • FIG. 2 is a schematic diagram of a communication system provided in accordance with an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a data processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a processing procedure according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of another data processing method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another processing procedure according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a transmitting device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • FIG. 9 is another schematic structural diagram of a transmitting device according to an embodiment of the present invention.
  • FIG. 10 is another schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • the embodiment of the present invention proposes a solution based on the communication system shown in FIG. 2 to improve the data processing speed.
  • an embodiment of the present invention provides a communication system 100.
  • the communication system 200 includes at least one base station (BS) and a plurality of terminal devices.
  • a terminal device performing cellular communication has a function of performing cellular communication with a base station, and may also be referred to as a cellular terminal device or a cellular terminal.
  • the above base station and terminal device may adopt a user plane protocol stack as shown in FIG. 1.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • a CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA), CDMA2000, and the like.
  • UTRA may include wideband CDMA (WCDMA) technology and other CDMA variant technologies.
  • CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
  • the TDMA system can implement a wireless technology such as a global system for mobile communication (GSM).
  • GSM global system for mobile communication
  • An OFDMA system can implement such as evolved universal radio land access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies.
  • UTRA and E-UTRA are UMTS and UMTS evolved versions.
  • the various versions of 3GPP in long term evolution (LTE) and LTE-based evolution are new versions of UMTS that use E-UTRA.
  • the fifth generation (5Generation, referred to as "5G") communication system, New Radio (“NR" for short) is the next generation communication system under study.
  • the communication system 200 can also be applied to future-oriented communication.
  • Technology both apply to this issue
  • the technical solution provided by the embodiment is shown.
  • the system architecture and the service scenario described in the embodiments of the present invention are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
  • a terminal device which may also be called a user equipment (User Equipment, UE), a mobile terminal (MT), a mobile user equipment, etc., may be accessed via a radio access network (for example, a Radio Access Network, RAN).
  • a radio access network for example, a Radio Access Network, RAN.
  • the user equipment can be a mobile terminal, such as a mobile telephone (or "cellular" telephone) and a computer with a mobile terminal, for example, can be portable, pocket, handheld, built-in Or on-board mobile devices.
  • a network device can be a device deployed in a wireless access network to provide wireless communication functionality to a terminal device.
  • the network may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, etc., and may also include various forms of control nodes, such as network controllers.
  • the control node may connect multiple base stations and allocate resources for multiple terminal devices covered by the multiple base stations.
  • the name of a device with a base station function may be different, such as an eNB or an e-NodeB in LTE, or a base station or a transmitting and receiving endpoint in a 5G or NR (Transmission). Reception Point, abbreviated as "TRP”)
  • TRP Transmission). Reception Point
  • the number and types of terminal devices included in the communication system 200 shown in FIG. 2 are merely exemplary, and the embodiments of the present invention are not limited thereto.
  • it may also include more cellular terminal devices that communicate with the base station, or more D2D terminal devices that perform D2D communication, which are not described in the drawings for the sake of brevity.
  • the communication system 200 shown in FIG. 2 although the base station 20, the base station 22, and the base station 24, and a plurality of terminal devices are shown, the communication system 200 may not be limited to include the base station and the terminal device.
  • it may also include a core network device or a device for carrying a virtualized network function, etc., which will be apparent to those skilled in the art, and will not be described in detail herein.
  • Media access control packet MAC PDU usually refers to the MAC layer that the MAC layer will deliver from the RLC layer, the MAC CE generated by the MAC layer itself, and one or more of the Padding, by adding the MAC layer header. Information encapsulated into packets that can be delivered to the physical layer.
  • Transmission time interval usually the smallest unit of physical layer data processing.
  • the network device sends the resource allocated in the scheduling command to the terminal device, which is at least one TTI in time.
  • the MAC PDU is regarded as an independent minimum processing unit and cannot be reasonably split, so that the corresponding resources are not fully scheduled, and the low delay requirement cannot be met.
  • Embodiments of the present invention provide a data processing method.
  • the method can be used by the transmitting device as shown in FIG.
  • the method includes:
  • the sending device determines multiple media access control data packet MAC PDUs.
  • the sending device processes the multiple MAC PDUs to obtain multiple data packets, where one MAC PDU corresponds to one data packet.
  • the sending device sequentially sends the multiple data packets to the receiving device by using a transmission time interval TTI.
  • the transmitting device may determine a plurality of MAC PDUs according to an agreement with the receiving device.
  • the terminal device can prepare to place the data in one TTI for transmission according to existing resource conditions, such as known channel conditions or channel resources that can be used.
  • the terminal device (such as the MAC layer of the terminal device) determines a plurality of MAC PDUs for carrying the data.
  • the size of the MAC PDU can be the same or different.
  • the multiple MAC PDUs belong to one set, and the set corresponds to one TTI.
  • the agreement between the sending device and the receiving device includes, without limitation, the two parties use the same number of MAC PDUs on the same TTI. For example, one TTI corresponds to three MAC PDUs, and the three MAC PDUs all correspond to the same TTI.
  • 302 can be done by the MAC layer.
  • the multiple MAC PDUs are for the same terminal device.
  • the sending device may also be determined according to the received signaling, such as the signaling may be sent by the network device.
  • the method further includes: 301, the sending device determines one or more scheduling commands, where the one or more scheduling commands are used to instruct the sending device to sequentially send the multiple data packets by using one transmission time interval TTI; 302 includes 302', and the transmitting device determines the plurality of MAC PDUs in response to the one or more scheduling commands.
  • the scheduling command may be an uplink grant (UL grant).
  • the sending device receives one or more uplink grants; and the sending device determines the plurality of MAC PDUs in response to the one or more uplink grants.
  • the scheduling command the signaling transmission mode can be clarified.
  • the scheduling command generates multiple MAC PDUs
  • the granularity of the MAC PDU is smaller.
  • the processing for smaller MAC PDUs takes less time than the technical solution that only produces one MAC PDU.
  • a processing process can be split into multiple processing processes, which greatly reduces the waiting time and meets the requirements of lower latency.
  • the scheduling command may indicate information of a resource used by the sending device.
  • a scheduling command can satisfy the above indication requirements, but when a scheduling command contains too much information, it can be split into multiple scheduling commands to complete the same function. The corresponding transceiver parties can agree on how to handle multiple scheduling commands.
  • the scheduling command may include the allocated physical resource, such as a physical resource block (PRB), and the sending device may use the physical resource to send uplink data.
  • PRB physical resource block
  • the scheduling command may include scheduling information of one or more TB (Transport Block), such as modulation coding of each TB, NDI indication of each TB, and redundancy version (RV) of each TB. , the size of each TB or the total TB size, the process information used by each TB (such as the process number, or the child process number), the encoding mode of each TB, such as Turbo coding, convolution (conventional) code, LDPC code , Polar code, etc.
  • TB is a MAC PDU.
  • the scheduling command may include information about logical channel information or a logical channel group to which data that each TB of the one or more TBs can belong.
  • the information may be, before receiving the scheduling command, the terminal device obtains information about the logical channel information or the logical channel group to which the data that each TB can belong by receiving the configuration message.
  • the logical channel information, or logical channel group information may correspond to a specific service type. For example, the first type of service may use logical channel 1 or logical channel group 1, and the second type of service may use logical channel 2 or logical channel group 2.
  • the scheduling command may include time information used by the terminal device to send each of the one or more TBs. If which OFDM symbol or OFDM symbols are used, and/or frequency information (such as which PRB or which PRBs).
  • the scheduling command may include information that the terminal device sends the number of repetitions of one TB of the one or more TBs in the same TTI, and/or the redundancy version used when the TB is repeated.
  • the foregoing scheduling command may be split into multiple scheduling commands, and each scheduling command carries scheduling information of one of the TBs.
  • the foregoing scheduling command may be a scheduling command in the LTE system, that is, information including physical resources, MCS, RV, NDI, and the like.
  • the scheduling command may be an uplink grant (UL grant), an uplink grant, and the uplink grant has the characteristics of the foregoing scheduling command.
  • the network device determines one or more scheduling commands, where the one or more scheduling commands are used to instruct the sending device to sequentially send the multiple data packets by using one transmission time interval TTI
  • the network device transmits the one or more scheduling commands.
  • the sending device may include different processes for the multiple MAC PDUs, such as adding redundancy check information, coding, modulation, resource mapping, and the like. These processes can use one or more of them, or a combination of them or add other processes. This depends on the requirements of the communication system used and can be chosen by those skilled in the art.
  • the check mode of adding the cyclic redundancy code CRC can be adopted.
  • each MAC PDU is sequentially passed through a process of adding CRC, encoding, modulation, resource mapping.
  • the MAC PDU1 is processed to obtain the data packet 1.
  • the MAC PDU2 is processed to obtain the data packet 2.
  • the MAC PDU3 is processed to obtain the data packet 3.
  • the above-mentioned increase CRC is only one way of performing error check, and other forms of error check mode can also be adopted in the embodiment of the present invention.
  • 303 can be done by the PHY layer.
  • Each MAC PDU has its corresponding physical resource, such as channel resources. On this corresponding resource, the MAC PDU can be sent out.
  • a resource may be a resource element RE, or a physical resource block PRB, or a particular channel.
  • a plurality of MAC PDUs are sequentially mapped to REs corresponding to the allocated good resources.
  • a scheme of performing frequency domain mapping and then performing time domain mapping may be employed. Specifically, the first OFDM symbol of the resource is first mapped in a manner of low frequency to high frequency or high frequency to low frequency. After the mapping of the first MAC PDU is completed, the second PDU, the third PDU, and the like are sequentially mapped in a similar manner.
  • the next MAC PDU of the previous MAC PDU can continue from the Nth OFDM symbol.
  • Resource mapping or resource mapping from the N+1th OFDM symbol. This allows the subsequent MAC PDUs to be sent out more quickly.
  • the plurality of MAC PDUs in the above embodiment use the allocated resources.
  • the resource may be a resource allocated by one scheduling command on one carrier, and the transmitting device divides the resources by itself; if necessary, the sending device may notify the receiving device of the information related to the division by signaling.
  • the resource may also be allocated resources on one carrier; the scheduling command of the receiving device allocates resources required for each MAC PDU, and the transmitting device performs resource mapping according to the allocated resources.
  • the information that may be used in the foregoing processing may be determined by the sending device according to the protocol, or determined according to the configuration of the peer end (such as the receiving device), or obtained from the scheduling command, or the sending device according to environmental factors (such as the packet size). , channel conditions, etc.) are determined.
  • This information includes one of the following or a combination of them: CRC length, encoding, modulation.
  • the coding mode includes: a turbo code, a convolutional code, or an LDPC code, or other codes, which are not limited in the present invention.
  • the next MAC PDU may start from the unmapped OFDM symbol, and then perform resource mapping. That is, adjacent MAC PDUs can use the same OFDM symbol in time, but use different resource elements RE.
  • the uplink modulation data may be used to simultaneously carry the used modulation and/or coding information, so as to receive the device. Decode.
  • the scheduling command does not carry the information, the receiving device needs to perform blind detection of modulation and/or coding.
  • the scheduling command carries only information about the total resources, such as the total size of the MAC PDU1 to the MAC PDU3.
  • the terminal device determines other information, such as modulation information or encoding information, after the uplink data is sent, the related information is carried at the same time, so that the receiving end performs the unpacking process.
  • the invention is not limited.
  • the transmitting device sequentially transmits the plurality of data packets in one TTI.
  • the following manner can be adopted.
  • the transmission of the data packet 1 can be started on the designated TTI, and the transmission is completed at time t1.
  • the transmission of the data packet 2 can be started on the specified TTI, and the transmission is completed at time t2.
  • the transmission of the data packet 3 can be started on the specified TTI, and the transmission is completed at t3.
  • the above three data packets are sequentially sorted in time and transmitted within the same specified TTI.
  • the receiving device can receive partial data (data packet 1) at an earlier time or receive all data (data packets 1-3) at an earlier time. It should be noted that there may be a time interval between the data packets, depending on the time required for the above processing and the division of the MAC PDU. In order to achieve better results, the time interval between data packets can be made zero by reasonable configuration.
  • the ordering includes, in chronological order, one by one.
  • the order of each data packet is not limited.
  • the so-called one after the other includes: the case where each data packet is connected one after the other, and also includes the case that there are other data or time periods in the middle of a certain data packet.
  • the using one The TTI sends a plurality of data packets to the receiving device in sequence, and the encapsulation order of the data packets is the same as the order in which the data packets are sent.
  • the order of receiving the corresponding data packets is consistent with the order of decapsulation.
  • the processing sequence of the data packet is consistent with the order of sending the data packet.
  • the order of processing of the corresponding data packets is consistent with the order of receiving the data packets.
  • the corresponding TTI can be used only when the data corresponding to the entire MAC PDUx completes the resource mapping. Sending, assuming that the processing flow completes the resource mapping for the entire MAC PDUx at time t3, the transmitting device can initiate the transmission process at t3 as early as possible. Second, the time required for each process will be longer because of the longer MAC PDUx.
  • part of the data can be sent out at an earlier time, and all the data is sent out at an earlier time, so that the processing of the data packet is more flexible, thereby shortening the delay required for transmission.
  • the MAC PDU can be split, so that the scheduling for the MAC PDU is more flexible, thereby meeting the requirement of low latency.
  • the time between receiving the uplink grant and transmitting the corresponding uplink data can be reduced.
  • the method may further include:
  • the sending device receives a feedback message, where the feedback message indicates whether at least one of the multiple data packets is correctly received.
  • the sending device starts a retransmission mechanism in response to the feedback message.
  • the feedback message includes, without limitation, HARQ feedback, such as ACK/NACK, or a retransmission command.
  • the retransmission mechanism of the data packet can be initiated by using the confirmation result of one data packet; the retransmission mechanism of all data packets related to this data packet can also be started.
  • Such a correlation may include a relationship of a plurality of data packets corresponding to a plurality of MAC PDUs in the mapping relationship.
  • the time for the transmitting device to confirm whether the data packet is correctly received can be shortened, thereby promptly starting the corresponding retransmission mechanism, and further reducing the processing time of the entire communication system.
  • the sending device may be a network device; and the receiving device may be a terminal device.
  • the sending device may be a terminal device; and the receiving device may be a network device.
  • the transmitting device can use multiple TTIs of different lengths, if the transmitting device is receiving or transmitting data in a longer TTI, if it is required to receive or transmit a shorter TTI data, Then, one MAC PDU corresponding to the longer TTI can be punctured. Punching indicates that it will be empty for a while. That is, the data corresponding to the shorter TTI preempts the resources used by the longer one MAC PDU. Since multiple MAC PDUs sent by the longer TTI are independently coded, this preemption does not affect the decoding performance of other Mac PDUs of longer TTI transmission. The MAC PDU affected by the puncturing can be sent later or discarded. This further increases the flexibility of the transmitting device and allows data to be transmitted preferentially.
  • Embodiments of the present invention provide a data processing method.
  • the method can be made by the receiving device as shown in FIG.
  • the method corresponds to the method of the above transmitting device.
  • the repeated parts will not be described again. Please refer to the schemes of FIG. 3 and FIG. 4.
  • the method includes:
  • the receiving device sequentially receives multiple data packets from the sending device by using a transmission time interval TTI.
  • the receiving device processes the multiple data packets.
  • the receiving device obtains multiple media access control data packet MAC PDUs according to the processed multiple data packets, where one MAC PDU corresponds to one data packet.
  • the one TTI is in a mapping relationship with the multiple MAC PDUs.
  • the mapping relationship includes that a plurality of data packets generated after the processing of the multiple MAC PDUs are sequentially sent or received in the TTI.
  • the mapping relationship may be agreed upon by both parties before communication or by signaling. It may be determined by the transmitting device, or may be determined by the receiving device, and may be notified by the necessary notification signaling.
  • the form of the notification can be either explicit or implicit.
  • the implicit mode means that in the notification signaling, there is no information indicating that there is a corresponding characteristic.
  • the receiving device sequentially receives a plurality of data packets at one TTI.
  • the receiving device sequentially receives data packet 1, data packet 2, and data packet 3 within one TTI.
  • each data packet is not limited.
  • the so-called one after the other includes: the case where each data packet is connected one after the other, and also includes the case that there are other data or time periods in the middle of a certain data packet.
  • the receiving device processes the plurality of data packets.
  • the plurality of data packets correspond to one terminal device.
  • FIG. 6 shows a schematic diagram of a process in accordance with an embodiment of the present invention.
  • the three data packets are subjected to demodulation, decoding, CRC check, and the like, respectively.
  • the CRC check is completed, it is known whether the data packet is correctly received.
  • the first received packet 1 because the process begins first, so the CRC check is completed at t1'; the second received packet 2, the CRC is completed at t2'
  • the third received packet 3 the CRC check is completed at t3'.
  • 503 can be done by the PHY layer.
  • the receiving device obtains multiple media access control data packet MAC PDUs based on the processed multiple data packets, where one MAC PDU corresponds to one data packet.
  • multiple MAC SDUs can be obtained.
  • the MAC PDU1, the MAC PDU2, and the MAC PDU3 are further decapsulated, and the corresponding MAC SDU1, MAC SDU2, and MAC SDU3 are obtained.
  • 504 can be done by the MAC layer.
  • partial data can be received at an earlier time, and all data is received at an earlier time, making the processing of the data packet more flexible, thereby shortening the delay required for reception.
  • the MAC PDU can be split, so that the scheduling for the MAC PDU is more flexible, thereby meeting the requirement of low latency.
  • the time between receiving the uplink grant and transmitting the corresponding uplink data can be reduced.
  • the receiving device processes the multiple data packets, and further includes:
  • the retransmission mechanism includes, without limitation, HARQ feedback, such as ACK/NACK, or a retransmission scheduling command, the retransmission command instructing the transmitting device to resend the data packet.
  • HARQ feedback such as ACK/NACK
  • a retransmission scheduling command the retransmission command instructing the transmitting device to resend the data packet.
  • the retransmission mechanism of the data packet can be initiated by using the confirmation result of one data packet; the retransmission mechanism of all data packets related to this data packet can also be started.
  • Such a correlation may refer to multiple data packets corresponding to multiple MAC PDUs in the above mapping relationship.
  • the corresponding retransmission mechanism is that the NACK of the data packet may instruct the transmitting device to resend the data packet 1, or may instruct the transmitting device to resend All packets, ie packets 1-3.
  • the NACK of the data packet triggers a retransmission scheduling command, which instructs the transmitting device to resend the data packet 1, or may instruct the transmitting device to resend all the data packets, ie, data packets 1-3.
  • the corresponding packet 2 can also have similar functions.
  • 5031, 5032 can be completed by the PHY layer.
  • the time for confirming whether the data packet is correctly received can be shortened, thereby promptly starting the corresponding retransmission mechanism, and further reducing the processing time of the entire communication system.
  • the method further includes:
  • the receiving device determines one or more scheduling commands, where the one or more scheduling commands are used to instruct the sending device to sequentially send the multiple data packets by using one transmission time interval TTI.
  • the receiving device obtains multiple MAC PDUs based on the multiple data packets, including:
  • the sending device obtains the multiple MAC PDUs according to the one or more scheduling commands and the multiple data packets, where the one or more scheduling commands correspond to the multiple MAC PDUs.
  • the scheduling command may be an uplink authorization.
  • the uplink grant can be sent to a sending device, such as a terminal device.
  • the scheduling command may indicate information of a resource used by the sending device. These information are referred to the relevant descriptions above and will not be described again. Through the manner of the scheduling command, the signaling transmission mode can be clarified.
  • the sending device may be a network device; and the receiving device may be a terminal device. And the receiving device receives the one or more scheduling commands, where the one or more scheduling commands are used to indicate that multiple data packets are sequentially received from the sending device by using one transmission time interval TTI.
  • the sending device may be a terminal device; and the receiving device may be a network device.
  • the receiving device may determine one or more scheduling commands, where the one or more scheduling commands are used to instruct the sending device to sequentially send the multiple data packets by using one transmission time interval TTI; sending the one or Multiple scheduling commands
  • the embodiment of the invention further provides a sending device.
  • the transmitting device 700 can use the aforementioned data processing method.
  • the transmitting device includes a processing unit and a transmitting unit.
  • the processing unit 702 is configured to determine a plurality of media access control data packet MAC PDUs, and is further configured to process the multiple MAC PDUs to obtain multiple data packets, where one MAC PDU corresponds to one data packet;
  • the sending unit 703 is configured to sequentially send the multiple data packets to the receiving device by using one transmission time interval TTI.
  • the resources are reasonably scheduled and processed faster.
  • the processing unit may determine multiple MAC PDUs according to an agreement with the receiving device.
  • the terminal device can prepare to place the data in one TTI for transmission according to existing resource conditions, such as known channel conditions or channel resources that can be used.
  • the terminal device (such as the MAC layer of the terminal device) determines a plurality of MAC PDUs for carrying the data.
  • the size of the MAC PDU can be the same or different.
  • the multiple MAC PDUs belong to one set, and the set corresponds to one TTI.
  • some functions of the processing unit may be completed by the MAC layer.
  • the multiple MAC PDUs are for the same terminal device.
  • the processing unit may also determine the multiple MAC PDUs according to the received signaling, for example, the signaling may be sent by the network device.
  • the sending device further includes: the processing unit, configured to determine one or more scheduling commands, where the one or more scheduling commands are used to instruct the sending device to use the one time interval TTI
  • the processing unit is configured to determine that the plurality of MAC PDUs comprise the processing unit, and determine the multiple MAC PDUs in response to the one or more scheduling commands.
  • the scheduling command may be an uplink grant (UL grant).
  • the sending device receives one or more uplink grants; and the sending device determines the plurality of MAC PDUs in response to the one or more uplink grants.
  • the scheduling command the signaling transmission mode can be clarified.
  • the scheduling command generates multiple MAC PDUs
  • the granularity of the MAC PDU is smaller.
  • the processing for smaller MAC PDUs takes less time than the technical solution that only produces one MAC PDU.
  • a processing process can be split into multiple processing processes, which greatly reduces the waiting time and meets the requirements of lower latency.
  • the processing unit may include different processing processes for the multiple MAC PDUs, such as adding redundancy check information, coding, modulation, resource mapping, and the like. These processes can use one or more of them, or a combination of them or add other processes. This depends on the requirements of the communication system used and can be chosen by those skilled in the art.
  • the check mode of adding the cyclic redundancy code CRC can be adopted.
  • the meaning of the resource mapping is the same as the description of the method part of the transmitting device above.
  • the plurality of MAC PDUs in the above embodiment use the allocated resources.
  • the resource may be a resource allocated by one scheduling command on one carrier, and the sending device separately divides the resources; If necessary, the transmitting device can inform the receiving device of the division-related information in the form of signaling.
  • the resource may also be allocated resources on one carrier; the scheduling command of the receiving device allocates resources required for each MAC PDU, and the transmitting device performs resource mapping according to the allocated resources.
  • the information that may be used in the foregoing processing may be determined by the sending device according to the protocol, or determined according to the configuration of the peer end (such as the receiving device), or obtained from the scheduling command, or the sending device according to environmental factors (such as the packet size). , channel conditions, etc.) are determined.
  • This information includes one of the following or a combination of them: CRC length, encoding, modulation.
  • the coding mode includes: a turbo code, a convolutional code, or an LDPC code, or other codes, which are not limited in the present invention.
  • FIG. 4 refers to the description of the method part of the above sending device for the manner of the sending unit.
  • the meaning of the sequence is the same as that of the method part of the transmitting device above.
  • part of the data can be sent out at an earlier time, and all the data is sent out at an earlier time, so that the processing of the data packet is more flexible, thereby shortening the delay required for transmission.
  • the one TTI is in a mapping relationship with the multiple MAC PDUs.
  • the mapping relationship includes that a plurality of data packets generated after the processing of the multiple MAC PDUs are sent or received in the TTI.
  • the MAC PDU can be split, so that the scheduling for the MAC PDU is more flexible, thereby meeting the requirement of low latency.
  • the time between receiving the uplink grant and transmitting the corresponding uplink data can be reduced.
  • the sending device 700 further includes:
  • the receiving unit 705 is configured to receive a feedback message, where the feedback message indicates whether at least one of the multiple data packets is correctly received.
  • the processing unit is further configured to initiate a retransmission mechanism in response to the feedback message.
  • the feedback message includes, without limitation, HARQ feedback, such as ACK/NACK, or a retransmission command.
  • the retransmission mechanism of the data packet can be initiated by using the confirmation result of one data packet; the retransmission mechanism of all data packets related to this data packet can also be started.
  • Such a correlation may include a relationship of a plurality of data packets corresponding to a plurality of MAC PDUs in the mapping relationship.
  • the time for the transmitting device to confirm whether the data packet is correctly received can be shortened, thereby promptly starting the corresponding retransmission mechanism, and further reducing the processing time of the entire communication system.
  • the sending device may be a network device; and the receiving device may be a terminal device.
  • the sending device may be a terminal device; and the receiving device may be a network device.
  • the transmitting device can use multiple TTIs of different lengths, if the transmitting device is receiving or transmitting data in a longer TTI, if it is required to receive or transmit a shorter TTI data, Then, one MAC PDU corresponding to the longer TTI can be punctured. Punching indicates that it will be empty for a while. That is, the data corresponding to the shorter TTI preempts the resources used by the longer one MAC PDU. Since multiple MAC PDUs sent by the longer TTI are independently coded, this preemption does not affect the decoding performance of other Mac PDUs of longer TTI transmission. The MAC PDU affected by the puncturing can be sent later or discarded. This further increases the flexibility of the transmitting device and can be prioritized Lose data.
  • Embodiments of the present invention provide a receiving device.
  • the receiving device can use the aforementioned data processing method, and the receiving device corresponds to the method of the above transmitting device. For the convenience of description, the repeated parts will not be described again.
  • the receiving device 800 includes:
  • the receiving unit 803 is configured to sequentially receive multiple data packets from the sending device by using one transmission time interval TTI;
  • the processing unit 802 is configured to process the multiple data packets.
  • the processing unit 802 is further configured to obtain multiple MAC PDUs based on the processed multiple data packets, where one MAC PDU corresponds to one data packet.
  • the resources are reasonably scheduled, and the processing speed is faster.
  • the one TTI is in a mapping relationship with the multiple MAC PDUs.
  • the mapping relationship includes that a plurality of data packets generated after the processing of the multiple MAC PDUs are sequentially sent or received in the TTI.
  • the mapping relationship may be agreed upon by both parties before communication or by signaling. It may be determined by the transmitting device, or may be determined by the receiving device, and may be notified by the necessary notification signaling.
  • the form of the notification can be either explicit or implicit.
  • the implicit mode means that in the notification signaling, there is no information indicating that there is a corresponding characteristic.
  • the order here refers to one by one in chronological order.
  • the order of each data packet is not limited.
  • the so-called one after the other includes: the case where each data packet is connected one after the other, and also includes the case that there are other data or time periods in the middle of a certain data packet.
  • the encapsulation order of the data packets is consistent with the order of sending the data packets.
  • the order of receiving the corresponding data packets is consistent with the order of decapsulation.
  • the processing sequence of the data packet is consistent with the order of sending the data packet.
  • the order of processing of the corresponding data packets is consistent with the order of receiving the data packets.
  • the processing of the receiving device is a corresponding inverse process. It can be understood that the manner of obtaining the information required in the foregoing processing, the content or the manner of the related information, and the method of the transmitting device are not described herein.
  • a process or a part of a process in which the receiving device processes the multiple data packets may be completed by a PHY layer.
  • obtaining multiple MAC PDUs based on the processed multiple data packets may be completed by the MAC layer.
  • partial data can be received at an earlier time, and all data is received at an earlier time, making the processing of the data packet more flexible, thereby shortening the delay required for reception.
  • the MAC PDU can be split, so that the scheduling for the MAC PDU is more flexible, thereby meeting the requirement of low latency.
  • the time between receiving the uplink grant and transmitting the corresponding uplink data can be reduced.
  • the processing unit is configured to process the multiple data packets, including:
  • the processing unit is configured to confirm whether at least one of the plurality of data packets is correctly received
  • the processing unit is configured to start a retransmission mechanism according to the confirmation result.
  • the retransmission mechanism includes, without limitation, HARQ feedback, such as ACK/NACK, or a retransmission scheduling command, the retransmission command instructing the transmitting device to resend the data packet.
  • HARQ feedback such as ACK/NACK
  • a retransmission scheduling command the retransmission command instructing the transmitting device to resend the data packet.
  • the retransmission mechanism of the data packet can be initiated by using the confirmation result of one data packet; the retransmission mechanism of all data packets related to this data packet can also be started.
  • Such a correlation may refer to multiple data packets corresponding to multiple MAC PDUs in the above mapping relationship.
  • This step can be sent by the transmitting device 805 of the receiving device 800 to transmit corresponding signaling.
  • the function of the processing unit to confirm and start the retransmission mechanism may be completed by the PHY layer.
  • the time for confirming whether the data packet is correctly received can be shortened, thereby promptly starting the corresponding retransmission mechanism, and further reducing the processing time of the entire communication system.
  • the receiving device 800 further includes:
  • the processing unit is further configured to determine one or more scheduling commands, where the one or more scheduling commands are used to instruct the sending device to sequentially send the multiple data packets by using a sending time interval TTI;
  • the processing unit is configured to obtain multiple MAC PDUs based on the multiple data packets, including:
  • the processing unit is configured to obtain the multiple MAC PDUs based on the one or more scheduling commands and the multiple data packets, where the one or more scheduling commands correspond to the multiple MAC PDUs.
  • the scheduling command may be an uplink authorization.
  • the uplink grant may be sent to a transmitting device, such as a terminal device, by the transmitting unit 805.
  • the dotted line in the figure indicates that the part can be omitted.
  • the scheduling command may indicate information of a resource used by the sending device. These information are referred to the relevant descriptions above and will not be described again. Through the manner of the scheduling command, the signaling transmission mode can be clarified.
  • the sending device may be a network device; and the receiving device may be a terminal device.
  • the sending device may be a terminal device; and the receiving device may be a network device.
  • the processing unit may be implemented by a processor, which may be implemented by a transmitter or a transceiver, which may be implemented by a receiver or a transceiver.
  • FIG. 9 is a structural block diagram of a transmitting device according to an embodiment of the present invention.
  • the terminal device 900 includes a processor 901, a memory 902, a transmitter 903, a receiver 904, and an antenna 905.
  • the terminal device 900 may also include other devices such as an input device, an output device, a battery, and the like.
  • Processor 901 can include functionality to operate one or more software programs.
  • the software program can be stored in the memory 902.
  • the software instructions stored by processor 902 and memory 902 can be configured to cause the actions performed by terminal device 900.
  • processor 902 is capable of operating a connection program.
  • the memory 902 can It is an institutional memory, a flash memory, a magnetic storage device such as a hard disk, a floppy disk drive, a magnetic tape, and the like.
  • Memory 902 can store one or more software programs, instructions, information blocks, data, and the like.
  • the memory 902 can store instructions for performing the method performed by the terminal device in the method of FIG.
  • the processor 901 can execute the instructions stored in the memory 902 in combination with other hardware (for example, the transmitter 903, the receiver 904, and the antenna 905) to complete the steps performed by the transmitting device in the method shown in FIG. 3.
  • other hardware for example, the transmitter 903, the receiver 904, and the antenna 905.
  • the memory 902 can store instructions for performing the method performed by the terminal device in the method of FIG.
  • the processor 901 can execute the instructions stored in the memory 902 in combination with other hardware (for example, the transmitter 903, the receiver 904, and the antenna 905) to complete the steps performed by the transmitting device in the method shown in FIG. 4, and the specific working process and beneficial effects can be seen in the figure. 4 Description of the terminal device in the illustrated embodiment.
  • FIG. 10 is a structural block diagram of a network side device according to an embodiment of the present invention.
  • the network side device 1000 shown in FIG. 10 includes a processor 1001, a memory 1002, and a transceiver 1003.
  • the method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1001 or implemented by the processor 1001.
  • the processor 1001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1001 or an instruction in a form of software.
  • the processor 1001 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc.
  • RAM random access memory
  • ROM read-only memory
  • programmable read only memory or an electrically erasable programmable memory
  • register etc.
  • the storage medium is located in the memory 1002, and the processor 1001 reads the instructions in the memory 1002 and completes the steps of the above method in combination with its hardware.
  • the memory 1002 can store instructions for performing the method performed by the receiving device in the method of FIG. 5.
  • the processor 1001 can execute the instructions stored in the memory 1002 in combination with other hardware (for example, the transceiver 1003 and an antenna (not shown)) to complete the steps performed by the receiving device in the method shown in FIG. 5, and the specific working process and beneficial effects can be seen in the figure. A description of the receiving device in the illustrated embodiment.
  • the memory 1002 can store instructions for performing the method performed by the receiving device in the method of FIG.
  • the processor 1001 can execute the instructions stored in the memory 1002 in combination with other hardware (for example, the transceiver 1003) to complete the steps performed by the receiving device in the method shown in FIG. 6.
  • the specific working process and the beneficial effects can be received in the embodiment shown in FIG. Description of the device.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically 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 invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

L'invention concerne un procédé de traitement de données, ainsi qu'un dispositif d'envoi et un dispositif de réception. Le dispositif d'envoi comprend : une unité de traitement utilisée pour déterminer une pluralité de paquets de données de commande d'accès au support (PDU MAC), l'unité de traitement étant en outre utilisée pour traiter la pluralité de PDU MAC pour obtenir de multiples paquets de données, chaque PDU MAC correspondant à un paquet de données ; et une unité d'envoi utilisant un intervalle de temps de transmission (TTI) pour envoyer la pluralité de paquets de données à un dispositif de réception en séquence. En déterminant une pluralité de PDU MAC et en permettant à une pluralité de paquets de données correspondant à ces PDU MAC d'être transmis pendant un TTI, des ressources sont raisonnablement planifiées, ce qui permet d'améliorer la vitesse de traitement de données.
PCT/CN2017/114636 2016-12-07 2017-12-05 Procédé de traitement de données, dispositif d'envoi et dispositif de réception WO2018103637A1 (fr)

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US11770212B2 (en) 2020-06-30 2023-09-26 Boe Technology Group Co., Ltd. Data transmission methods, data transmission device, and data transmission apparatuses
CN113872735B (zh) * 2020-06-30 2023-10-24 京东方科技集团股份有限公司 数据传输方法、装置及设备

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