WO2020088538A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2020088538A1
WO2020088538A1 PCT/CN2019/114419 CN2019114419W WO2020088538A1 WO 2020088538 A1 WO2020088538 A1 WO 2020088538A1 CN 2019114419 W CN2019114419 W CN 2019114419W WO 2020088538 A1 WO2020088538 A1 WO 2020088538A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
network device
data packets
transmission
data
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PCT/CN2019/114419
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English (en)
French (fr)
Inventor
黄曲芳
范强
徐小英
娄崇
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华为技术有限公司
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Publication of WO2020088538A1 publication Critical patent/WO2020088538A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • 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
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • This application relates to the field of communication technology, and in particular, to a communication method and device.
  • the present application provides a communication method and device to realize transmission of industrial production data using a base station.
  • an embodiment of the present application provides a communication method that can be applied to a first network device, including: the first network device receives first information from a second network device, and the first information includes N Data packets, where N is a positive integer; the first network device generates at least one transport block according to the N data packets, the transport block is generated by a media access control MAC layer, and the transport block Does not include the packet data convergence protocol PDCP sequence number SN; the first network device sends the at least one transport block to the terminal device.
  • the number of the transmission blocks is one, and the one transmission block includes the N data packets.
  • each of the M transmission blocks includes size information of the data packet included in the transmission block, or each of the M transmission blocks includes The size index information of the data packet included in the transport block.
  • each of the M transmission blocks further includes transmission block identification information, and the transmission block identification information is used to identify the sequence of the M transmission blocks.
  • the one transmission block further includes size information of each of the N data packets, or the one transmission block further includes each of the N data packets The size index information of the data packet.
  • the terminal device receiving at least one transmission block sent by the first network device includes: the terminal device adopts different hybrid automatic request retransmission HARQ processes to respectively receive the M transmission blocks.
  • a communication device which can be applied to a first network device, including a transceiver and a processor;
  • the transceiver is used to receive the first information from the second network device, and the first information includes N data packets, where N is a positive integer; and the processor is configured to use the N data packets, Generate at least one transport block, the transport block is generated by the MAC layer of the media access control, the transport block does not include the packet data aggregation protocol PDCP sequence number SN; the transceiver is also used to send the at least one Transfer blocks.
  • the number of the transmission blocks is one, and the one transmission block includes the N data packets.
  • the transceiver when the transceiver sends the at least one transmission block, it is specifically used to: use different hybrid automatic request retransmission HARQ processes to separately send the M transmission blocks to the terminal device .
  • the transceiver is further configured to send first indication information to the terminal device, where the first indication information is used to indicate the size of each of the N data packets.
  • the transceiver when the transceiver sends the at least one transmission block to a terminal device, it is specifically used to receive second indication information sent by the terminal device, and the second indication information is used to indicate Sending the at least one transport block; according to the second indication information, sending the at least one transport block to the terminal device.
  • the transceiver is used to receive at least one transmission block sent by the first network device, the transmission block is generated by the media access control MAC layer, the transmission block does not include the packet data aggregation protocol PDCP sequence number SN; Is used to process the at least one transport block to obtain N data packets, where N is a positive integer.
  • the processor when the processor processes the at least one transport block and obtains N data packets, it is specifically used to: perform decapsulation of only the MAC layer on the at least one transport block to obtain The N data packets; or, the at least one transport block is only decapsulated at the PDCP layer and the MAC layer to obtain the N data packets.
  • the number of the transmission blocks is one, and the one transmission block includes the N data packets.
  • the number of the transmission blocks is M
  • the M transmission blocks include the N data packets, where M is an integer greater than or equal to 2.
  • each of the M transmission blocks includes size information of each data packet included in the transmission block, or each transmission block of the M transmission blocks Includes size index information of each data packet included in the transport block.
  • each of the M transmission blocks further includes transmission block identification information, and the transmission block identification information is used to identify the sequence of the M transmission blocks.
  • the transceiver when the transceiver receives at least one transmission block sent by the first network device, it is specifically used to: use different hybrid automatic request retransmission HARQ processes to respectively receive the M transmission blocks.
  • the transceiver further includes: receiving first indication information sent by the first network device, where the first indication information is used to indicate each data in the N data packets The size of the package.
  • the transceiver is further configured to: send second indication information to the first network device, where the second indication information is used to indicate the sending of the at least one transport block.
  • the communication device may further include a memory, wherein the processor is coupled to the memory, and the processor may read instructions in the memory to implement the functions of the processor, such as the at least one transmission block Perform processing to get N packets and so on.
  • an embodiment of the present application further provides a communication device, which can be applied to a first network device, and the communication device includes a processing module and a transceiver module;
  • the transceiving module is used to receive the first information from the second network device, and the first information includes N data packets, where N is a positive integer; the processing module is used to receive the N data packets, Generate at least one transport block, the transport block is generated by the MAC layer of the media access control, the transport block does not include the packet data aggregation protocol PDCP sequence number SN; the transceiver module is also used to send the at least one Transfer blocks.
  • transceiver module and the processing module, please refer to the record of the first aspect.
  • an embodiment of the present application further provides a communication device, which can be applied to a terminal device, and the communication device can include a processing module and a transceiver module;
  • the transceiver module is used to receive at least one transmission block sent by the first network device, the transmission block is generated by the MAC layer of the media access control, the transmission block does not include the packet data aggregation protocol PDCP sequence number SN; processing A module, configured to process the at least one transmission block to obtain N data packets, where N is a positive integer.
  • a computer program product includes computer instructions, and when the computer instructions are executed, the method according to the first aspect or the second aspect is executed.
  • a computer-readable storage medium stores instructions, and when the instructions are executed, the method according to the first aspect or the second aspect is executed.
  • a communication system including a first network device and a terminal device; wherein the first network device is used to perform the method of the first aspect, and the terminal device is used to perform the second aspect Methods.
  • the terminal device may further include: a second network device, where the second network device is used to send the first information to the first network device.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of this application.
  • FIG. 2 is a schematic diagram of a protocol stack provided by an embodiment of this application.
  • FIG. 3 is a schematic diagram of a protocol stack provided by an embodiment of this application.
  • FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of processing a data packet provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of data transmission provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of data packet processing provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of data packet processing provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a RAR message provided by an embodiment of this application.
  • FIG. 11 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • 15 is a schematic structural diagram of a base station provided by an embodiment of this application.
  • 16 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • a terminal device is a device that provides voice and / or data connectivity to users. Specifically, it may be a user equipment (UE), a mobile station (MS), or a mobile terminal (MT). For example, hand-held devices with wireless connection, in-vehicle devices, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • terminals are: mobile phones, tablets, laptops, PDAs, mobile Internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, self-driving wireless terminals, wireless terminals in remote medical surgery, and smart grids Wireless terminals in transportation, transportation safety (transportation safety), wireless terminals in smart cities (smart cities), or wireless terminals in smart homes (smart homes), etc.
  • the terminal device may be an operating arm terminal in industrial control.
  • a network device refers to a device in a wireless network.
  • the network device may be a first network device or a second network device.
  • the first network device is a device in the network that connects the terminal device to the wireless network.
  • the first network device is a node in a wireless access network, and may also be called a base station, and may also be called a radio access network (radio access network, RAN) node (or device).
  • RAN radio access network
  • some examples of network equipment are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), home base station (eg, home evolved Node B, or home Node B, HNB) , Baseband unit (BBU), or WiFi access point (AP), etc.
  • the second network device may be, but not limited to, a controller, and the controller may control the operation of the terminal device.
  • the controller is a programmable logic controller (programmable logic controller, PLC)
  • the terminal device is an operating arm
  • the PLC can control the movement of the operating arm.
  • At least one refers to one or more, and the plurality refers to two or more.
  • At least one (a) of a, b, or c may represent: a; b; c; a and b; a and c; b and c; or a, b and c.
  • a, b, and c may be single or multiple.
  • a possible networking mode is: the controller sends downlink information to the base station, the base station forwards the downlink information to the terminal device, and the terminal device performs the corresponding actions, for example,
  • the controller may be a programmable controller, and the terminal device may be an operating arm. It can be understood that the scenario shown in FIG. 1 is only an example of the application of the embodiment of the present application, and is not intended to limit the embodiment of the present application. For a service whose end-to-end delay is less than the data generation period, or a transmission block The services provided by the embodiments of the present application can be applied to services that do not require rearrangement.
  • the wireless protocol stack between the base station and the terminal equipment in the user plane, includes: service data adaptation protocol (service data adaptation protocol, SDAP) layer, packet data convergence protocol (PDCP) layer, radio link control (RLC) layer, medium access control (MAC) layer and physical (PHY) Floor.
  • service data adaptation protocol service data adaptation protocol
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC medium access control
  • PHY physical
  • the wireless protocol stack shown in FIG. 2 described above is used.
  • the data processing process at the base station side is: the base station receives the downlink information sent by the controller, and encapsulates the downlink information from the top to the bottom in the SDAP layer, PDCP layer, RLC layer, and MAC layer to form a transport block (transport block, TB ), Transmitted via the PHY layer.
  • transport block transport block, TB
  • the terminal device After receiving the TB in the PHY layer, the terminal device passes through the decapsulation of the MAC layer, RLC layer, PDCP layer, and SDAP layer in order from the bottom to the top, obtains the downlink information, and transmits it upward to the application layer (application layer, APP layer), where The application layer is the peer layer between the terminal device and the controller.
  • application layer application layer, APP layer
  • the present application provides a wireless protocol stack.
  • the wireless protocol stack includes a first wireless protocol stack and a second wireless protocol stack.
  • the first wireless protocol stack is used for the first network device and the second network device.
  • the second wireless protocol stack is used for communication between the second network device and the terminal device, and does not limit the first wireless protocol layer in this embodiment of the present application.
  • the second wireless protocol stack includes 2 layers, which are layer 1 and layer 2, respectively. Layer 1 corresponds to the PHY layer, and layer 2 includes at least the MAC layer, but is not limited to at least one of SDAP, PDCP, or RLC layers. If the second wireless protocol stack shown in FIG. 2 is applied to the communication between the terminal equipment and the base station, the data processing process between the base station and the terminal equipment can be simplified, the processing speed can be accelerated, and the speed requirements of industrial production can be met.
  • an example for the second wireless protocol stack shown in FIG. 3 may be: layer 1 includes a PHY layer, and layer 2 includes an SDAP layer, a PDCP layer, and an RLC layer. It can be seen that the second wireless protocol stack shown in FIG. 3 is completely the same as the wireless protocol stack shown in FIG. 2 at this time. At this time, the improvement of the present application is to simplify the operation process of each layer in the second wireless protocol stack.
  • the encapsulation of the PDCP layer may include operations such as encryption, header compression, adding PDCP serial number (SN), and integrity protection.
  • SN PDCP serial number
  • the encapsulation process of the PDCP layer may not include operations such as adding PDCP and SN. That is to say, in the embodiment of the present application, for the second wireless protocol stack shown in FIG. 3, compared with the wireless protocol stack shown in FIG. 2, not only can the number of layers included in the second wireless protocol stack be reduced, but also Can simplify the processing of each layer of packaging operations.
  • this application provides a flow of a communication method.
  • the first network device may be the controller in FIG. 1 described above
  • the second network device may be the base station in FIG. 1 described above
  • the terminal device may It is the terminal device shown in FIG. 1 above.
  • the communication method can be applied in an uplink communication process or a downlink communication process.
  • the following communication process is taken as an example for description. It can be understood that, in the embodiments of the present application, the function of the network device may also be implemented by a chip applied to the network device, and the function of the terminal device may also be implemented by a chip applied to the terminal device.
  • the process includes:
  • the first network device sends first information, where the first information includes N data packets, where N is a positive integer.
  • the second network device receives the first information.
  • the N data packets are specifically data packets of the application layer.
  • the first network device may use the first wireless protocol stack shown in FIG. 3 to encapsulate the N data packets to obtain the first information, via wired or wireless means. Send the first information to the second network device.
  • the second network device may use the first wireless protocol stack shown in FIG. 3 to decapsulate the first information to obtain N data packets.
  • the second network device generates at least one transport block according to the N data packets.
  • the transport block is generated by the MAC layer, and the transport block does not include PDCP SN.
  • the second network device sends the at least one transport block.
  • the second network device may trigger the sending of at least one transmission block by itself, or may be triggered by the terminal device to send at least one transmission block.
  • the terminal device may send second indication information to the first network device, where the second indication information is used to indicate the sending of the at least one transport block.
  • the first network device may send the at least one transport block to the terminal device when receiving the second indication information sent by the terminal device.
  • the terminal device receives the at least one transport block.
  • the second network device may use the second wireless protocol stack shown in FIG. 3 to encapsulate the N data packets, generate at least one transmission block, and transmit it to the terminal device via the air interface.
  • the second network device may encapsulate only N data packets in the MAC layer at layer 2 to obtain at least one transport block, and at least one transport block is transmitted to the terminal device via the PHY layer.
  • the number of the transmission block is one, and the one transmission block includes N data packets.
  • the number of the transmission blocks is M, and M is an integer greater than or equal to 2.
  • the M transmission blocks include the foregoing N data packets, and the data packets included in each transmission block do not overlap.
  • the value of N is 4, and the four data packets are data packet 0, data packet 1, data packet 2, and data packet 3, respectively.
  • the value of M is 2, and the two transmission blocks are transmission block 0 and transmission block 1, respectively.
  • the transmission block 0 may include data packet 0 and data packet 1
  • the transmission block 1 may include data packet 2 and data packet 3. .
  • layer 2 of the second wireless stack protocol stack shown in FIG. 3 includes only the PDCP layer and the MAC layer.
  • the second network device may encapsulate only the NCP packets in the PDCP layer and the MAC layer.
  • At least one transport block is obtained, and at least one transport block is transmitted to the terminal device via the PHY layer.
  • the number of the transmission blocks may be one or M.
  • the encapsulation process of the MAC layer may include at least one of operations such as grouping, concatenating, or adding a MAC subheader.
  • the encapsulation process of the PDCP layer may include at least one of operations such as header compression, encryption, or integrity protection.
  • the PDCP layer may perform only header compression, encryption, or encryption. Only for integrity protection operations, header compression and encryption operations can also be performed at the same time.
  • the terminal device processes the at least one transmission block to obtain N data packets.
  • the terminal device decapsulates only the MAC layer for at least one transport block to obtain N packets.
  • the terminal device only enters the MAC layer and the PDCP layer for at least one transport block Decapsulation.
  • the above transmission block may include size information of data packets included in the transmission block.
  • the one transmission block may further include N data packets Information about the size of each packet.
  • the M transmission blocks include N data packets
  • the i is an integer greater than or equal to 1 and less than or equal to M
  • the i-th transmission block includes X data packets
  • the X data packets are a part of the N data packets
  • the i-th transmission block further includes size information of each of the X data packets.
  • the size information of the data packet included in the above-mentioned transport block may also be replaced with the size index information of the data packet.
  • the limited data packet size can be numbered, and the index value represents the size of the data packet, thereby reducing the load of the transmission block. For example, there are three sizes of data packets in the application layer. A data packet of the first size can be represented by 00, a data packet of the second size can be represented by 01, and a data packet of the third size can be represented by 10.
  • the above transmission block may not include the size information of the data packet or the index information of the size of the data packet.
  • the second network device may notify the terminal device of the size of each data packet by sending first indication information to the terminal device, where the first indication information is used to indicate the size of each of the N data packets.
  • the size of the data packet in the above-mentioned transmission block refers to the size of the data packet processed by layer 2 of the second wireless protocol stack shown in FIG. 2.
  • each data packet includes a header portion and a data portion. If the header compression operation is performed in the PDCP layer of layer 2, the size of the data packet refers to the size of the data packet after header compression, otherwise the size of the data packet refers to the size of the data packet without header compression.
  • MAC integrity protection (MAC, integration, protection, I, MAC-I) information is added to the data packet, so the size of the data packet means that the data packet includes MAC-I After the size, otherwise, the size of the data packet refers to the size of the data packet does not include MAC-I.
  • adding the size information of the data packet, or the size index information, or sending the first indication information to the above-mentioned transmission block is to notify the receiving end of the size of each data packet in the transmission block So that the receiver can read each packet in the transmission block. Therefore, in the embodiment of the present application, for the case where two or more data packets are included in each transmission block, the last data packet included in each transmission block may not add the data packet size information, or the size of the data packet Index information.
  • a transmission block includes two data packets, which are the first data packet and the second data packet. The size information of the first data packet or the size index information can be added to the transmission block. Size information of the second data packet, or size index information. For the case where a data packet is included in the transmission block, the size information or size index information of the data packet may not be added to the transmission block.
  • each of the M transmission blocks further includes transmission block identification information, and the transmission block identification information may be used to identify M The sequence of transmission blocks.
  • the transmission block identification information may be TB SN or a hybrid automatic repeat request (HARQ) process ID.
  • HARQ hybrid automatic repeat request
  • the transmission block numbered 0 is transmitted through HARQ process 0
  • the transmission block numbered 1 is transmitted through HARQ process 1
  • the transmission block numbered M-1 is transmitted through HARQ process M-1 Transmission
  • HARQ can be used directly to identify the transmission sequence of different transmission blocks.
  • each of the M transmission blocks may not include the identification information of the transmission block, and the second network device may notify the terminal device of the selection order of different transmission blocks in the following manner, Different HARQ processes are used to send the M transport blocks to the terminal device respectively.
  • layer 2 shown in FIG. 3 includes a PDCP layer and a MAC layer.
  • the PDCP layer performs operations such as header compression, encryption, and integrity protection, and the MAC layer performs multiplexing and grouping.
  • N data packets are placed in the same transport block TB, and the value of N is 3 for example.
  • a cluster of data includes three data packets, namely data packet 0, data packet 1 and data packet 2, wherein each data packet includes a header portion and data section.
  • the second network device for example, a base station
  • the TB also includes legnth information of each of the above three data packets.
  • the size information of the data packet may specifically refer to the number of bits occupied by each data packet. Regarding the size of the data packet, please refer to the description in FIG. 4 above, which will not be described here.
  • the parameters of the data model can be shown in Table 1. It can be seen that the end-to-end delay of data transmission is lower than the data generation period, that is, the data packet transmitted on the air interface at any time Both come from the same cluster of data. Among them, in Table 1, the transmission delay (transfer interval) can be used to indicate the data generation cycle.
  • the data packets transmitted on the air interface come from the same cluster of data. It can be seen that there is no reordering requirement between the data of different clusters. If the data packets of the same cluster are transmitted through the same TB, there is no reordering requirement. Therefore, all the data in a cluster of data packets can be passed One TB is transmitted without increasing the number of the transport block (for example, the number of the transport block may be the following TB or SN or HARQ process ID).
  • the second network device receives the first cluster of data at time t1, and the first cluster of data includes data packet 1, data packet 2, and data packet 3.
  • the first cluster of data can arrive at the terminal device (eg, operating arm) at time t2.
  • the second network device receives the second cluster data, and the second cluster data includes the data packet 4, the data packet 5, and the data packet 6.
  • the first cluster data and the second cluster data may be generated by a first network device (for example, a PLC controller) and sent to the first network device. It can be seen that the second cluster data is generated after the first cluster data arrives at the terminal device, that is, only the first cluster data is transmitted in the air interface in the time period between t1 and t2. Therefore, if a cluster of data is put into the same TB packet for transmission, there is no need to sort the TB packets.
  • layer 2 shown in FIG. 3 includes a PDCP layer and a MAC layer.
  • the PDCP layer performs operations such as header compression, encryption, and integrity protection
  • the MAC layer performs packet grouping operations to convert N data packets. Placed in M transport blocks TB, N takes a value of 3, and M takes a value of 2 for example.
  • a cluster of data includes three data packets, namely data packet 0, data packet 1 and data packet 2, wherein each data packet includes a header portion and a data portion.
  • the second network device (such as a base station) may first perform the PDCP layer header compression on the above three data packets, then perform the PDCP layer encryption, and finally perform the MAC layer grouping.
  • the above three data packets may be placed in two transport blocks TB, respectively TB1, TB2, and TB1 includes data packet 0 and data packet 1, and TB2 includes data packet 2.
  • the TB1 also includes legnth information of the data packet 0 and the data packet 1, and the size information of the data packet 2 is also included in the TB2.
  • TB1 also includes the TB of TB1
  • TB2 also includes the TB of TB2.
  • the value of TB1 of TB1 can be 0, and the value of TB2 of TB2 can be 1.
  • the terminal device can decapsulate the MAC layer and PDCP layer of TB1, and submit the decapsulated data packet to the upper layer (for example, application layer).
  • a cluster of data is divided into two TB transmissions as an example for description, and is not intended to limit the embodiment of the present application.
  • a cluster of data may be divided into any number of TBs greater than or equal to 2 for transmission.
  • a cluster of data can be divided into several terabytes for transmission and is configurable.
  • the length of TB and SN is related to the number of TB. For example, the number of TB is 2, TB only needs 1 bit, the number of TB is 4, the number of TB needs 2 bits, the number of TB is 8, and the number of TB needs 3 bits.
  • the TB and SN may be replaced with HARQ process IDs.
  • HARQ process IDs For how to replace them with HARQ process IDs, please refer to the above description, which will not be described here.
  • placing a cluster of data in multiple TBs has the following advantages over transmitting a cluster of data in one TB:
  • the terminal device side includes survival time parameters.
  • survival time parameters see the records in Table 1.
  • the survival time parameter indicates the time that the application layer of the terminal device can stay in the working state without receiving data. Once the time is exceeded, the application layer of the terminal device will enter a safe shutdown state and stop working.
  • a cluster of data is divided into multiple TBs for transmission. Only when all TBs fail to be transmitted will the terminal device enter a safe shutdown state, reducing the probability of the terminal device entering a safe shutdown state.
  • layer 2 shown in FIG. 3 includes a PDCP layer and a MAC layer.
  • the PDCP layer performs header compression and encryption operations
  • the MAC layer performs packet grouping operations, placing N data packets in the same transmission.
  • the value of N is 3, and the size of the data packet is not included in the transmission block TB.
  • the second network device such as a base station
  • the size of each data packet is fixed, for example, as shown in Table 1 above, the size of the data packet can be 200Bytes.
  • the data structure of the TB can be further simplified, the length indication field in the data packet header can be eliminated, and the second network device (such as a base station) can notify the terminal device of the size of the data packet through a configuration message. After receiving the configuration message, the terminal device can know the size of each data packet, and then can read the received TB according to the size of the data packet.
  • the size of the data packet please refer to the description in FIG. 4 above, which will not be described here.
  • the size of the data packet is notified to the terminal device through the configuration information, and the length indication field in the TB header is eliminated, which can reduce the load of the TB header.
  • the terminal device triggers the second network device to send at least one transmission block
  • the present application provides the following application scenarios:
  • the second network device may configure a threshold for the terminal device through the configuration message, and the threshold is less than the survival time of the terminal device.
  • a timer may be set on the terminal device side. If the timer duration exceeds the above threshold and the transmission block has not been received, the instruction information is sent to the second network device.
  • the instruction information may be as shown in FIG. 4 above.
  • the second indication information in the embodiment. After receiving the indication information, the second network device may send the transport block. Optionally, the second network device may send the transmission block in a normal configuration, or may send the transmission block in a more robust manner, for example, increasing the transmission power of the transmission block.
  • the terminal device side restarts the timer. Using the above method can prevent the terminal equipment from entering a safe shutdown state.
  • an embodiment of the present application provides a flow of a communication method.
  • the network device in the flow may correspond to the base station in FIG. 1 described above, and the terminal device may correspond to the terminal device shown in FIG. 1 described above.
  • the process can be:
  • the network device sends first indication information, where the first indication information is used to indicate the length of the radio network temporary identity (RNTI) used by the terminal device.
  • RNTI radio network temporary identity
  • RNTI is used to temporarily identify terminal equipment.
  • the length of RNTI is 16 bits, which can represent up to 65536 terminals.
  • the length of the RNTI indicated by the first indication information may be less than 16 bits.
  • the length of the RNTI indicated by the first indication information may be 4 bits.
  • the terminal device receives the first indication information.
  • the terminal device sends a random access preamble.
  • the network device receives the random access preamble.
  • the network device sends a random access response (random access response, RAR) message.
  • RAR random access response
  • the terminal device receives the RAR message.
  • the terminal device determines the RNTI used by the terminal device according to the first indication information and the RNTI in the RAR message.
  • the RAR message may include the RNTI, and the RNTI may be a temporary cell radio network identifier (temporary, cell, RNTI, C-RNTI).
  • the format of the RAR message is not limited.
  • the RAR message may include 7 fields, in order from Oct1 to Oct7.
  • Oct1 includes 3 reserved (reserved, R) fields and a timing advance command (timing advance command) field.
  • Oct2 includes the timing advance command and uplink grant (UL Grant) fields.
  • the Oct3, Oct4, and Oct5 fields include the UL Grant field.
  • the C-RNTI field is included in Oct6 and Oct7.
  • the RAR message may include only the Oct1 to Oct6 fields, but not the Oct7 field.
  • the lengths of the UL, Grant, Timing, and Command fields in the RAR message are also variable, as long as the network device is pre-configured and the terminal device is notified.
  • the terminal device may take an RNTI of a corresponding length at the target position of the RAR message as the RNTI used by the terminal device itself.
  • the target location may be specified through a protocol, or the network device notifies the terminal device through a configuration message.
  • the length of the RNTI indicated by the first indication information is 4 bits.
  • the terminal device can take the first 4 bits of data from the Temporary C-RNTI in the Oct6 field (see the fill in slashes in FIG. 10 Part), as the RNTI used by the terminal equipment itself.
  • the first four bits in the Oct6 field are the above target positions. In the embodiment shown in FIG.
  • the first four bits in the Temporary C-RNTI are used as the RNTI used by the terminal device for illustration, which is not intended to limit the embodiment of the present application.
  • the terminal device may take any bit at any position of the Temporary C-RNTI in Oct6 of FIG. 10 as the RNTI of the terminal device, and the position and the number of bits may be pre-configured by the network device.
  • the RNTI of the terminal equipment will be carried in the downlink control information (DCI).
  • DCI downlink control information
  • the present application provides an application scenario, which is not intended to limit the present application.
  • the network device in FIG. 9 is used as a base station for industrial control and a terminal device
  • the base station for industrial control can notify each UE of the length of the RNTI supported by the cell through a broadcast message. After the UE obtains this information, it can use the above broadcast message The notified length of RNTI is taken out of the specific value of RNTI used by the terminal device in the RAR message for subsequent communication. For example, as shown in FIG.
  • the UE may extract 4 bits from the Temporary C-RNTI of the RAR message as the RNTI used by the terminal device itself. For the extracted 4-bit RNTI, see the oblique line filling part shown in FIG. 10 for details.
  • the network device in FIG. 9 is used as a base station for industrial control, a terminal The equipment is an operating arm ”for example:
  • the base station for industrial control serves both the operation arm of industrial control and the ordinary UE.
  • the base station for industrial control may allocate the RNTI of the first length to the operation arm and the RNTI of the second length to the ordinary UE, and the first length is the same as or different from the second length.
  • the first length is 4 bits
  • the second length is 16 bits.
  • the base station for industrial control sends a first random access response to the operation arm, and the operation arm intercepts the RNTI of the first length in the first random access response message as the RNTI of the operation arm.
  • the base station for industrial control sends a second random access response to the ordinary UE, and the ordinary UE intercepts the RNTI of the second length in the second random access response as the RNTI of the ordinary UE.
  • the types of the first random access response and the second random access response may be the same or different.
  • the base station for industrial control may also allocate a third length of UL grant to the operating arm and a fourth length of UL grant to the ordinary UE.
  • the third length is the same as or different from the fourth length.
  • the third length is 16 bits
  • the fourth length is 25 bits.
  • the present application also provides a flow of a communication method.
  • the base station allocates RNTI and UL grants of different lengths to ordinary UEs and operating arms, and assigns different types of random access to ordinary UEs and operating arms.
  • the base station sends first indication information and second indication information, where the first indication information is used to indicate the RNTI length of the operation arm, and the second indication information is used to indicate the length of the UL arm grant.
  • the operating arm receives the first instruction information and the second instruction information.
  • the operation arm sends a random access preamble.
  • the base station sends third indication information and fourth indication information, where the third indication information is used to indicate the RNTI length of the ordinary UE, and the fourth indication information is used to indicate the UL grant length of the ordinary UE.
  • the ordinary UE receives the third indication information and the fourth indication information.
  • the ordinary UE sends a random access preamble.
  • the base station sends a RAR message of the first type and a RAR message of the second type according to the location or type of the random access preamble.
  • the operating arm receives the first type of RAR message.
  • the ordinary UE receives the second type of RAR message.
  • the method in the embodiment of the present application is adopted so that the operating arm or the ordinary UE uses a shorter RNTI and reduces the size of the DCI. Increase the robustness of the transmission.
  • S111 to S119 is not limited.
  • S114 may be located in front of S111 to S113 or behind S111 to S113.
  • the number of HARQ processes is constant at 8. Due to the business requirements in industrial control and the number of data packets in transit at the same time, the number of HARQ processes can also be reduced. In this way, the DCI size can be reduced and the robustness can be increased.
  • the present application provides a flow of a communication method.
  • the flow can reduce the number of HARQ processes.
  • the network equipment in the flow can correspond to the base station in FIG. 1 above, and the terminal equipment can correspond to the above.
  • the process can be:
  • the network device determines first indication information, where the first indication information is used to indicate the number of HARQ processes used by the terminal device, or the first indication information is used to indicate the number of bits occupied by the identifier of the HARQ process .
  • the network device may use broadcast signaling or preset signaling, such as RRC signaling, to send the first indication information, and the number of HARQ processes indicated by the first indication information may be less than the number of HARQ processes currently used by the terminal device . For example, if the terminal device currently supports 8 HARQ processes, then the number of HARQ processes indicated by the first indication information may be less than 8.
  • the network device sends the first indication information.
  • the terminal device receives the first indication information.
  • the terminal device determines the number of HARQ processes used by the terminal device according to the first indication information.
  • the size of the HARQ process ID used by the terminal device is smaller, and the DCI is more robust.
  • the solutions shown in FIGS. 4, 9 and 12 may be used alone or in combination.
  • the terminal device may use the scheme shown in FIG. 9 during the random access process, the random access process ends, and the scheme shown in FIG. 4 during the subsequent data transmission process.
  • an embodiment of the present application provides a communication device 1300 that includes a transceiver unit 1301 and a processing unit 1302.
  • the communication device 1300 may be applied to a network device or a chip of a network device, and is used to perform the steps in FIG. 4, FIG. 9, FIG. 11, or FIG. 12 with the network device as the main body.
  • the transceiver unit 1301 is configured to receive first information from a second network device, and the first information includes N data packets, where N is a positive integer; and the processing unit 1302 is configured to use the N data Packet, generating at least one transport block, the transport block is generated by the media access control MAC layer, the transport block does not include the packet data aggregation protocol PDCP sequence number SN; the transceiver unit 1301 is also used to send the terminal to the terminal device Describe at least one transport block.
  • the communication device 1300 may be applied to a terminal device or a chip of a terminal device, and is used to perform the steps in FIG. 4, FIG. 9, FIG. 11, or FIG. 12 with the terminal device as the main body of execution.
  • the transceiving unit 1301 is configured to receive at least one transport block sent by the first network device, the transport block is generated by a media access control MAC layer, and the transport block does not include the packet data aggregation protocol PDCP sequence number SN; processing The unit 1302 is configured to process the at least one transport block to obtain N data packets, where N is a positive integer.
  • transceiver unit 1301 For the specific functions of the transceiver unit 1301 and the processing unit 1302, refer to the descriptions in FIG. 4, FIG. 9, FIG. 11, or FIG. 12 above.
  • the communication device 1400 may include a processor 1401.
  • the communication device may further include a memory 1402, and the processor 401 and the memory 1402 are coupled.
  • the device may further include a receiver 1404 and a transmitter 1405.
  • the device may further include a bus system 1403.
  • the processor 1401, the memory 1402, the receiver 1404 and the transmitter 1405 can be connected through a bus system 1403, the memory 1402 can store instructions, and the processor 1401 can be used to execute the instructions stored in the memory 1402 to control the receiver 1404 to receive Signal and control the transmitter 1405 to send a signal to complete the steps in the process shown in FIG. 4, FIG. 9, FIG. 11 or FIG. 12 with the network device or terminal device as the main body.
  • the receiver 1404 and the transmitter 1405 may be different physical entities or the same physical entity, and may be collectively referred to as a transceiver.
  • the memory 1402 may be integrated in the processor 1401, or may be a different physical entity from the processor 1401.
  • the functions of the receiver 1404 and the transmitter 1405 may be implemented through a transceiver circuit or a dedicated chip for transceiver.
  • the processor 1401 may be realized by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
  • a method of using a computer may be considered to implement the functions of the network device or the terminal device provided by the embodiments of the present application.
  • the program codes that will realize the functions of the processor 1401, the receiver 1404, and the transmitter 1405 are stored in the memory 1402, and the general-purpose processor may implement the functions of the processor 1401, the receiver 1404, and the transmitter 1405 by executing the codes in the memory.
  • the communication device 900 may be applied to a network device or a chip in the network device, and the communication device 1400 may be used to execute the process shown in FIG. 4 above, with the first network device as an execution subject A step of.
  • the receiver 1404 can be used to receive the first information from the second network device
  • the processor 1401 can be used to generate at least one transmission block according to the N data packets
  • the transmitter 1405 can be used to send the first information to the terminal device. Describe at least one transport block.
  • the communication device 1400 may be applied to a terminal device or a chip in the terminal device, and the communication device 1400 may be used to perform the steps shown in FIG. 4 with the terminal device as the main body of execution.
  • the receiver 1404 may be used to receive at least one transmission block sent by the first network device.
  • the processor 1401 may be configured to process the at least one transmission block to obtain N data packets.
  • the present application also provides a network device, for example, a schematic structural diagram of a base station.
  • the base station may be applied in the scenario of the communication system shown in FIG. 1, and the base station may be the network device in the process shown in FIG. 4, FIG. 9, FIG. 11, or FIG.
  • the base station 1500 may include one or more radio frequency units, such as a remote radio unit (RRU) 1501 and one or more baseband units (BBUs) (also called digital units, digital units). , DU) 1502.
  • the RRU 1501 may be a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc. It may include at least one antenna 15011 and a radio frequency unit 15012.
  • the RRU1501 part can be used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, to receive the first information from the second network device, or to send less than one transmission block to the terminal device.
  • the BBU1502 part can be used for baseband processing and control of the base station.
  • the RRU1501 and BBU1502 may be physically arranged together, or may be physically separated, that is, distributed base stations.
  • the BBU1502 is the control center of the base station, and may also be called a processing unit, which is used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spread spectrum.
  • the BBU processing unit
  • the BBU can be used to control the base station to execute the steps shown in FIG. 4, FIG. 9, FIG. 11, or FIG. 12 with the network device as the main body of execution.
  • the BBU1502 may be composed of one or more boards, and multiple boards may jointly support a wireless access network (such as an NR network) of a single access standard, or may support wireless access of different access standards respectively. Access the network.
  • the BBU 1502 may further include a memory 15021 and a processor 15022.
  • the memory 15021 is used to store necessary instructions and data.
  • the memory 15021 stores the instruction of “generate at least one block for block transmission according to the N data packets” in the foregoing embodiment.
  • the processor 15022 is used to control the base station to perform necessary actions.
  • each board can also be provided with necessary circuits.
  • FIG. 16 provides a schematic structural diagram of a terminal device.
  • the terminal device can be applied to the processes shown in FIG. 4, FIG. 9, FIG. 11, or FIG. 12 above. Note that FIG. 16 shows only the main components of the terminal device.
  • the terminal device 1600 may include a processor, a memory, and a control circuit, and optionally, may also include an antenna and / or an input / output device.
  • the processor may be used to process communication protocols and communication data, and control user equipment, execute software programs, and process data of software programs.
  • the memory may store software programs and / or data.
  • the control circuit can be used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • the control circuit and the antenna can also be called a transceiver, which can be used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screen, display screen, keyboard, etc., can be used to receive data input by the user and output data to the user.
  • the processor may read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal after radio frequency processing, and then sends the radio frequency signal in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor.
  • the processor converts the baseband signal into data and processes the data.
  • FIG. 16 only shows one memory and processor. In actual user equipment, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc. This embodiment of the present application does not limit this.
  • the processor may include a baseband processor and a central processor.
  • the baseband processor may be used to process communication protocols and communication data
  • the central processor may be used to control the entire user equipment and execute software programs. , Processing data from software programs.
  • the processor in FIG. 16 integrates the functions of the baseband processor and the central processor.
  • the baseband processor and the central processor can also be separate processors, which are interconnected through technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capability, and various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processor can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • an antenna and a control circuit with a transceiver function may be used as the transceiver unit 1601 of the terminal device 1600, and a processor with a processing function may be regarded as a processing unit 1602 of the terminal device 1600.
  • the terminal device 1600 may include a transceiver unit 1601 and a processing unit 1602.
  • the transceiver unit may also be called a transceiver, a transceiver, a transceiver device, or the like.
  • the device used to implement the receiving function in the transceiver unit 1601 may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 1601 may be regarded as a sending unit, that is, the transceiver unit 1601 includes a receiving unit and a sending unit.
  • the receiving unit may also be referred to as a receiver, receiver, receiving circuit, etc.
  • the transmitting unit may also be referred to as a transmitter, transmitter, or transmitting circuit, etc.
  • the network device in each of the above device embodiments corresponds exactly to the network device or terminal device in the terminal device and method embodiments, and the corresponding steps are performed by the corresponding modules or units, for example, the sending module (transmitter) method execution method is implemented
  • the receiving module executes the step of receiving in the method embodiment, and other steps than sending and receiving may be executed by the processing module (processor).
  • the function of the specific module can refer to the corresponding method embodiment.
  • the sending module and the receiving module may form a transceiver module, and the transmitter and the receiver may form a transceiver to jointly realize the sending and receiving function; the processor may be one or more.
  • the embodiment of the present application further provides a communication system, which includes the foregoing first network device and terminal device.
  • a second network device may also be included, and the second network device is used to send the first information to the first network device.
  • the embodiments of the present application further provide a computer-readable storage medium that stores instructions, and when the instructions are executed, the method provided in any one or more of the above embodiments is executed.
  • the computer storage medium may include various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.
  • embodiments of the present application also provide a computer program product, the computer program product includes computer instructions, and when the computer instructions are executed, the method provided in any one or more of the above embodiments is executed.
  • an embodiment of the present application further provides a chip including a processor for implementing the functions involved in any one or more of the above embodiments, such as acquiring or processing information involved in the above method or News.
  • the chip further includes a memory, which is used to store program instructions and data executed by the processor.
  • the chip may also contain chips and other discrete devices.
  • the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration Circuit (application-specific integrated circuit, ASIC), field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the memory may include read-only memory and random access memory, and provide instructions and data to the processor.
  • a portion of the memory may also include non-volatile random access memory.
  • the bus system may also include a power bus, a control bus, and a status signal bus.
  • various buses are marked as bus systems in the figure.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. In order to avoid repetition, they will not be described in detail here.

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Abstract

一种通信方法及装置，该方法的原理为：简化第一网络设备与终端设备间的协议栈，从而简化对数据的处理过程，加快处理速度。比如，第一网络设备针对从第二网络设备中接收的N个数据包，可对N个数据包不添加PDCP SN，相对于，对N个数据包一定添加PDCP SN的方案，可加快数据处理速度。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2018年11月02日提交中国专利局、申请号为201811303690.2、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
随着无线通信技术在工业生产中的应用越来越深入，工业生产中需要处理速度越来越快，如何利用基站实现工业生产中的数据传输，目前并没有相关的解决方案。
发明内容
本申请提供一种通信方法及装置，以实现利用基站传输工业生产数据。
第一方面，本申请实施例提供一种通信方法，该通信方法可应用于第一网络设备，包括：第一网络设备接收来自第二网络设备的第一信息，所述第一信息中包括N个数据包，所述N为正整数；所述第一网络设备根据所述N个数据包，生成至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；所述第一网络设备向终端设备发送所述至少一个传输块。
由于在本申请实施例中，无需对传输块添加PDCP SN，相对于对传输块添加PDCP SN的方案，可简化终端设备与第一网络设备间的处理过程，加快处理速度，满足工业生产对速度的要求。
在一种可能的实现中，所述第一网络设备根据所述N个数据包，生成至少一个传输块，包括：所述第一网络设备对所述N个数据包仅进行MAC层的封装，获得所述至少一个传输块；或者，所述第一网络设备对所述N个数据包仅进行PDCP层和MAC层的封装，获得所述至少一个传输块。
在本申请实施例中，可对应用层的N个数据包仅进行MAC层的封装，或者，仅进行PDCP层和MAC层的封装，相对于，现有的对数据包必须进行SDAP层、PDCP层、MAC层和RLC的封装，简化终端设备与第一网络设备间的协议栈，加快数据处理速度。
在一种可能的实现中，所述传输块的数量为一个，所述一个传输块中包括所述N个数据包。
在一种可能的实现中，所述一个传输块中还包括所述N个数据包中每个数据包的大小信息，或者，所述一个传输块中还包括所述N个数据包中每个数据包的大小索引信息。
在一种可能的实现中，所述传输块的数量为M个，所述M个传输块中包括所述N个数据包，其中，所述M为大于或等于2的整数。
在本申请实施例中，将应用层的N个数据包，放入多个传输块中进行传输，相对于将 N个数据包，放入一个传输块中传输，可避免由于一传输块传输失败，造成N个数据包全部丢失。
在一种可能的实现中，所述M个传输块中的每个传输块中包括所述传输块所包括数据包的大小信息，或者，所述M个传输块中的每个传输块中包括所述传输块所包括数据包的大小索引信息。
在一种可能的实现中，所述M个传输块中的每个传输块中还包括传输块标识信息，所述传输块标识信息用于标识所述M个传输块的先后顺序。
在一种可能的实现中，所述第一网络设备向终端设备发送所述至少一个传输块，包括：所述第一网络设备采用不同的混合自动请求重传HARQ进程，分别向所述终端设备发送所述M个传输块。
在本申请实施例中，利用不同的HARQ进程，发送不同的传输块，从而实现利用不同的HARQ进程，标识不同的传输块，从而无需在传输块中添加传输块标识，节省空口开销。
在一种可能的实现中，所述方法还包括：所述第一网络设备向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述N个数据包中每个数据包的大小。
在一种可能的实现中，所述第一网络设备向终端设备发送所述至少一个传输块，包括：
所述第一网络设备接收所述终端设备发送的第二指示信息，所述第二指示信息用于指示所述至少一个传输块的发送；所述第一网络设备根据所述第二指示信息，向所述终端设备发送所述至少一个传输块。
在本申请实施例中，终端设备可在进入安全停机状态前，发送第二指示信息至第一网络设备，以指示传输块的发送，从而避免终端设备进入安全停机状态。
第二方面，提供一种通信方法，该通信方法可应用于终端设备，包括：终端设备接收第一网络设备发送的至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；所述终端设备对所述至少一个传输块进行处理，获得N个数据包，所述N为正整数。
在一种可能的实现中，所述终端设备对所述至少一个传输块进行处理，获得N个数据包，包括：所述终端设备对所述至少一个传输块仅进行MAC层的解封装，获得所述N个数据包；或者，所述终端设备对所述至少一个传输块仅进行PDCP层和MAC层的解封装，获得所述N个数据包。
在一种可能的实现中，所述传输块的数量为一个，所述一个传输块中包括所述N个数据包。
在一种可能的实现中，所述一个传输块中还包括所述N个数据包中每个数据包的大小信息，或者，所述一个传输块中还包括所述N个数据包中每个数据包的大小索引信息。
在一种可能的实现中，所述传输块的数量为M个，所述M个传输块中包括所述N个数据包，其中M为大于或等于2的整数。
在一种可能的实现中，所述M个传输块中的每个传输块中包括所述传输块所包括的每个数据包的大小信息，或者，所述M个传输块的每个传输块中包括所述传输块中所包括的每个数据包的大小索引信息。
在一种可能的实现中，所述M个传输块中的每个传输块中还包括传输块标识信息，所述传输块标识信息用于标识所述M个传输块的先后顺序。
在一种可能的实现中，所述终端设备接收第一网络设备发送的至少一个传输块，包括： 所述终端设备采用不同的混合自动请求重传HARQ进程，分别接收所述M个传输块。
在一种可能的实现中，所述方法还包括：所述终端设备接收所述第一网络设备发送的第一指示信息，所述第一指示信息用于指示所述N个数据包中每个数据包的大小。
在一种可能的实现中，所述方法还包括：所述终端设备向所述第一网络设备发送第二指示信息，所述第二指示信息用于指示所述至少一个传输块的发送。
第三方面，提供一种通信装置，该通信装置可应用于第一网络设备，包括收发器以及处理器；
其中，收发器，用于接收来自第二网络设备的第一信息，所述第一信息中包括N个数据包，所述N为正整数；处理器，用于根据所述N个数据包，生成至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；收发器，还用于向终端设备发送所述至少一个传输块。
在一种可能的实现中，处理器在根据所述N个数据包，生成至少一个传输块时，具体用于：对所述N个数据包仅进行MAC层的封装，获得所述至少一个传输块；或者，对所述N个数据包仅进行PDCP层和MAC层的封装，获得所述至少一个传输块。
在一种可能的实现中，所述传输块的数量为一个，所述一个传输块中包括所述N个数据包。
在一种可能的实现中，所述一个传输块中还包括所述N个数据包中每个数据包的大小信息，或者，所述一个传输块中还包括所述N个数据包中每个数据包的大小索引信息。
在一种可能的实现中，所述传输块的数量为M个，所述M个传输块中包括所述N个数据包，其中，所述M为大于或等于2的整数。
在一种可能的实现中，所述M个传输块中的每个传输块中包括所述传输块所包括数据包的大小信息，或者，所述M个传输块中的每个传输块中包括所述传输块所包括数据包的大小索引信息。
在一种可能的实现中，所述M个传输块中的每个传输块中还包括传输块标识信息，所述传输块标识信息用于标识所述M个传输块的先后顺序。
在一种可能的实现中，所述收发器在发送所述至少一个传输块时，具体用于：采用不同的混合自动请求重传HARQ进程，分别向所述终端设备发送所述M个传输块。
在一种可能的实现中，所述收发器还用于：向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述N个数据包中每个数据包的大小。
在一种可能的实现中，所述收发器向终端设备发送所述至少一个传输块时，具体用于：接收所述终端设备发送的第二指示信息，所述第二指示信息用于指示所述至少一个传输块的发送；根据所述第二指示信息，向所述终端设备发送所述至少一个传输块。
可选的，上述通信装置还可包括存储器，其中，处理器与存储器耦合，所述处理器可读取所述存储器中的指令，以实现上述处理器的功能，比如根据所述N个数据包，生成至少一个传输块等。
第四方面，提供一种通信装置，该通信装置可应用于终端设备，包括：收发器和处理器；
其中，收发器，用于接收第一网络设备发送的至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；处理器，用于对所述至少一个传输块进行处理，获得N个数据包，所述N为正整数。
在一种可能的实现中，所述处理器对所述至少一个传输块进行处理，获得N个数据包时，具体用于：对所述至少一个传输块仅进行MAC层的解封装，获得所述N个数据包；或者，对所述至少一个传输块仅进行PDCP层和MAC层的解封装，获得所述N个数据包。
在一种可能的实现中，所述传输块的数量为一个，所述一个传输块中包括所述N个数据包。
在一种可能的实现中，所述一个传输块中还包括所述N个数据包中每个数据包的大小信息，或者，所述一个传输块中还包括所述N个数据包中每个数据包的大小索引信息。
在一种可能的实现中，所述传输块的数量为M个，所述M个传输块中包括所述N个数据包，其中M为大于或等于2的整数。
在一种可能的实现中，所述M个传输块中的每个传输块中包括所述传输块所包括的每个数据包的大小信息，或者，所述M个传输块的每个传输块中包括所述传输块中所包括的每个数据包的大小索引信息。
在一种可能的实现中，所述M个传输块中的每个传输块中还包括传输块标识信息，所述传输块标识信息用于标识所述M个传输块的先后顺序。
在一种可能的实现中，所述收发器在接收第一网络设备发送的至少一个传输块时，具体用于：采用不同的混合自动请求重传HARQ进程，分别接收所述M个传输块。
在一种可能的实现中，所述收发器还包用于：接收所述第一网络设备发送的第一指示信息，所述第一指示信息用于指示所述N个数据包中每个数据包的大小。
在一种可能的实现中，所述收发器还用于：向所述第一网络设备发送第二指示信息，所述第二指示信息用于指示所述至少一个传输块的发送。
可选的，上述通信装置还可包括存储器，其中，处理器与存储器耦合，所述处理器可读取所述存储器中的指令，以实现上述处理器的功能，比如对所述至少一个传输块进行处理，获得N个数据包等。
第五方面，本申请实施例还提供一种通信装置，该通信装置可应用于第一网络设备，该通信装置包括处理模块和收发模块；
其中，收发模块，用于接收来自第二网络设备的第一信息，所述第一信息中包括N个数据包，所述N为正整数；处理模块，用于根据所述N个数据包，生成至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；收发模块，还用于向终端设备发送所述至少一个传输块。
其中，关于收发模块和处理模块的介绍，可参见第一方面的记载。
第六方面，本申请实施例还提供一种通信装置，该通信装置可应用于终端设备，该通信装置可包括处理模块和收发模块；
其中，收发模块，用于接收第一网络设备发送的至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；处理模块，用于对所述至少一个传输块进行处理，获得N个数据包，所述N为正整数。
其中，关于收发模块和处理模块的介绍，可参见第二方面的记载。
第七方面，提供一种计算机程序产品，所述计算机程序产品包括计算机指令，当所述计算机指令被执行时，使得第一方面或第二方面所述的方法被执行。
第八方面，提供一种计算机可读存储介质，所述存储介质存储有指令，当所述指令被执行时，使得第一方面或第二方面所述的方法被执行。
第九方面，提供一种通信系统，包括第一网络设备和终端设备；其中，所述第一网络设备用于执行第一方面所述的方法，所述终端设备用于执行第二方面所述的方法。可选的，还可包括：第二网络设备，所述第二网络设备用于向第一网络设备发送第一信息。
附图说明
图1为本申请实施例提供的应用场景的一示意图；
图2为本申请实施例提供的一协议栈的示意图；
图3为本申请实施例提供的一协议栈的示意图；
图4为本申请实施例提供的通信方法的一流程示意图；
图5为本申请实施例提供的对数据包处理的一示意图；
图6为本申请实施例提供的数据传输的一示意图；
图7为本申请实施例提供的对数据包处理的一示意图；
图8为本申请实施例提供的对数据包处理的一示意图；
图9为本申请实施例提供的通信方法的一流程示意图；
图10为本申请实施例提供的RAR消息的一示意图；
图11为本申请实施例提供的通信方法的一流程示意图；
图12为本申请实施例提供的通信方法的一流程示意图；
图13为本申请实施例提供的通信装置的一结构示意图；
图14为本申请实施例提供的通信装置的一结构示意图；
图15为本申请实施例提供的基站的一结构示意图；
图16为本申请实施例提供的终端设备的一结构示意图。
具体实施方式
为了便于理解，示例性的给出了与本申请相关概念的说明以供参考，如下所示：
1)终端设备，是一种向用户提供语音和/或数据连通性的设备。具体可以是用户设备(user equipment，UE)、移动台(mobile station，MS)、或移动终端(mobile terminal，MT)等。例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、或智慧家庭(smart home)中的无线终端等。比如，所述终端设备可为工业控制中的操作臂终端。
2)网络设备，是指无线网络中的设备，所述网络设备可为第一网络设备，或第二网络设备。所述第一网络设备是网络中将终端设备接入到无线网络的设备。所述第一网络设备为无线接入网中的节点，又可以称为基站，还可以称为无线接入网(radio access network，RAN)节点(或设备)。目前，一些网络设备的举例为：gNB、传输接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、家庭基站(例如，home evolved  NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，或WiFi接入点(access point，AP)等。所述第二网络设备可但不限于为控制器，所述控制器可控制终端设备的操作。比如，在工业控制中，控制器为可编程逻辑控制器(programmable logic controller，PLC)，终端设备为操作臂，PLC可控制操作臂的动作。
3)至少一个，是指一个或多个，所述多个指两个或两个以上。
4)a、b、或c中的至少一项(个)，可以表示：a；b；c；a和b；a和c；b和c；或a、b和c。其中，a、b、c可以是单个，也可以是多个。
需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
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、完整的描述。
在未来的工业生产中，如图1所示，一种可能的组网模式为：控制器发送下行信息至基站，基站转发所述下行信息至终端设备，由终端设备完成相应的动作，比如，控制器可为可编程控制器，终端设备可为操作臂。可以理解的是，图1所示的场景，仅为本申请实施例应用的一示例，并不作为对本申请实施例的限定，对于端到端时延小于数据产生周期的业务，或者，传输块没有重排需求的业务，均可应用本申请实施例所提供的方法。
其中，在第五代移动通信系统中，如图2所示，在用户面，基站与终端设备间的无线协议栈，从上至下，依次包括：服务数据适配协议(service data adaptation protocol，SDAP)层、分组数据汇聚协议(packet data convergence protocol，PDCP)层、无线链路控制(radio link control，RLC)层、媒体接入控制(medium access control，MAC)层和物理(physical，PHY)层。
在图1所示的组网模式中，如果基站与终端设备间，沿用上述图2所示的无线协议栈。基站侧的数据处理过程为：基站接收控制器发送的下行信息，对下行信息，从上至下，依次进行SDAP层、PDCP层、RLC层和MAC层的封装，形成传输块(transport block，TB)，经由PHY层传输。终端设备在PHY层接收到TB后，从下至上，依次经过MAC层、RLC层、PDCP层和SDAP层的解封装，获得下行信息，且向上传输给应用层(application layer，APP layer)，其中，应用层是终端设备与控制器间的对等层。
通过上述可以看出，如果在图1所示的组网模式中，基站与终端设备间沿用上述图2所述的无线协议栈，对数据的处理过程较复杂，处理速度较慢，难以满足工业生产对速度的要求。
如图3所示，本申请提供一种无线协议栈，该无线协议栈包括第一无线协议栈和第二无线协议栈，所述第一无线协议栈用于第一网络设备与第二网络设备间的通信，所述第二无线协议栈用于第二网络设备与终端设备间的通信，对第一无线协议层本申请实施例并不作限定。第二无线协议栈包括2层，分别为层1和层2，层1对应PHY层，层2至少包括MAC层，但不限于还包括SDAP、PDCP或RLC层中的至少一个。如果将图2所示的第二无线协议栈，应用于终端设备与基站间的通信，可简化基站与终端设备间的数据处理过程，加快处理速度，满足工业生产对速度的要求。
需要说明的是，针对上述图3所示的第二无线协议栈的一种示例可为：层1包括PHY层，层2包括SDAP层、PDCP层和RLC层。可以看出，此时图3所示的第二无线协议栈与图2所示的无线协议栈已完全相同。此时，本申请的改进之处为，简化第二无线协议栈 中每层的操作过程，与图2所示的无线协议栈相比，同样可达到简化数据处理，加快处理速度的要求。比如，在图2的协议栈中，PDCP层的封装可包括加密、头压缩、增加PDCP序列号(serial number，SN)以及完整性保护等操作。在图3所示的第二无线协议栈中，PDCP层的封装过程可不包括：增加PDCP SN等操作。也就是说，在本申请实施例中，针对图3所示的第二无线协议栈，与图2所示的无线协议栈相比，不但可减少第二无线协议栈所包括层的数量，还可简化每层封装操作的处理过程。
如图4所示，本申请提供一种通信方法的流程，该流程中的第一网络设备可为上述图1中的控制器，第二网络设备可为上述图1中的基站，终端设备可为上述图1所示的终端设备。该通信方法可应用于上行通信过程中，也可应用于下行通信过程中，本申请实施例中，以下行通信过程为例，进行说明。可以理解的是，在本申请实施例中，网络设备的功能也可以通过应用于网络设备的芯片来实现，终端设备的功能也可以通过应用于终端设备的芯片来实现。该流程具体包括：
S401.第一网络设备发送第一信息，所述第一信息中包括N个数据包，所述N为正整数。
S402.第二网络设备接收第一信息。
所述N个数据包具体为应用层的数据包，第一网络设备可采用图3所示的第一无线协议栈，对N个数据包进行封装，获得第一信息，经有线或无线方式，将第一信息发送至第二网络设备。相应的，第二网络设备可采用图3所示的第一无线协议栈，对第一信息进行解封装，获得N个数据包。
S403.第二网络设备根据所述N个数据包，生成至少一个传输块。其中，所述传输块是MAC层生成的，所述传输块中不包括PDCP SN。
S404.第二网络设备发送所述至少一个传输块。
其中，第二网络设备可自行触发至少一个传输块的发送，也可受终端设备的触发至少一个传输块的发送。比如，终端设备可向第一网络设备发送第二指示信息，所述第二指示信息用于指示所述至少一个传输块的发送。第一网络设备可在接收到终端设备发送的第二指示信息时，向所述终端设备发送所述至少一个传输块。
S405.终端设备接收所述至少一个传输块。
具体的，第二网络设备可采用图3所示的第二无线协议栈，对N个数据包进行封装，生成至少一个传输块，经空口传输至终端设备。
一示例中，图3所示的第二无线协议栈的层2中仅包括MAC层。第二网络设备在层2可仅对N个数据包进行MAC层的封装，获得至少一个传输块，至少一个传输块经PHY层传输至终端设备。具体的，所述传输块的数量为一个，所述一个传输块中包括N个数据包。或者，所述传输块的数量为M个，M为大于或等于2的整数，M个传输块中包括上述N个数据包，且每个传输块中所包括的数据包并不重叠。比如，N取值为4，4个数据包分别为数据包0、数据包1、数据包2和数据包3。M取值为2，2个传输块分别为传输块0和传输块1，所述传输块0中可包括数据包0和数据包1，传输块1中可包知数据包2和数据包3。
一示例中，图3所示的第二无线栈议栈的层2中仅包括PDCP层和MAC层，第二网络设备在层2可仅对N个数据包进行PDCP层和MAC层的封装，获得至少一个传输块，至少一个传输块经PHY层传输至终端设备。所述传输块的数量可为一个或M个。关于每 个传输块所包括数据包的数量，可参见上述示例的介绍。
其中，MAC层的封装过程，可包括组包、级联或增加MAC子头等操作中的至少一个。PDCP层的封装过程，可包括头压缩、加密或完整性保护等操作中的至少一个，比如本申请实施例中，PDCP层可仅进行头压缩的操作，也可仅进行加密的操作，也可仅进行完整性保护的操作，也可同时进行头压缩和加密的操作。
S406.终端设备对所述至少一个传输块进行处理，获得N个数据包。
示例的，如果上述第一网络设备在图3所示的第二无线协议栈的层2中仅进行MAC层的封装，相应的，终端设备对至少一个传输块仅进行MAC层的解封装，获得N个数据包。
示例的，如果上述第一网络设备在图3所示的第二无线协议栈的层2仅进行MAC层和PDCP层的封装，相应的，终端设备对至少一个传输块仅进MAC层和PDCP层的解封装。
可选的，上述传输块中可包括传输块所包括的数据包的大小信息，比如，对于上述一个传输块包括N个数据包的情况，所述一个传输块中还可包括N个数据包中每个数据包的大小信息。对于上述M个传输块包括N个数据包的情况，针对第i个传输块，所述i为大于或等于1，小于或等于M的整数，所述第i个传输块中包括X个数据包，所述X个数据包为N个数据包的一部分数据包，第i个传输块中还包括X个数据包中每个数据包的大小信息。可替代的，上述传输块中所包括的数据包的大小信息，还可替换为数据包的大小索引信息。由于应用层的数据包的尺寸只有几种有限的取值，可以将有限的数据包尺寸进行编号，用索引值代表数据包的尺寸，从而可以减少传输块的负荷。比如，应用层的数据包存在三种尺寸，可将第一尺寸的数据包用00表示，第二尺寸的数据包用01，第三尺寸的数据包用10表示等。
可选的，上述传输块中可不包括数据包的大小信息，也不包括数据包大小的索引信息。第二网络设备可采用向终端设备发送第一指示信息的方式，通知终端设备每个数据包的大小，所述第一指示信息用于指示N个数据包中每个数据包的大小。
可以理解的是，上述传输块中数据包的大小，是指经图2所示的第二无线协议栈的层2处理后的数据包大小。比如，如图5、图7或图8所示，每个数据包包括头(header)部分和数据(data)部分。如果在层2的PDCP层进行头压缩操作，所述数据包的大小是指经头压缩后的数据包尺寸，否则数据包的大小是指未经头压缩后的数据包尺寸。如果在层2的MAC层进行完整性保护，所述数据包中添加MAC完整性保护(MAC，integration protection，I，MAC-I)信息，所以数据包的大小是指数据包中包括MAC-I后的尺寸，否则，数据包的大小是指数据包中未包括MAC-I的尺寸。
需要说明的是，在本申请实施例中，在上述传输块中添加数据包的大小信息，或大小索引信息，或发送第一指示信息，是为了通知接收端传输块中每个数据包的大小，以便接收端在传输块中读取每个数据包。因此，在本申请实施例中，针对每个传输块中包括两个或以上数据包的情况，每个传输块中所包括的最后一个数据包可以不添加数据包大小信息，或数据包的大小索引信息。比如，一个传输块中包括两个数据包，分别为第一数据包和第二数据包，可在传输块中添加第一个数包的大小信息，或大小索引信息，在传输块中不添加第二个数据包的大小信息，或大小索引信息。针对传输块中包括一个数据包的情况，可在该传输块中不添加该数据包的大小信息，或大小索引信息。
在本申请实施例中，针对上述N个数据包分配至M个传输块进行传输的情况，M个传输块中的每个传输块中还包括传输块标识信息，传输块标识信息可用于标识M个传输块的先后传输顺序。所述传输块标识信息可为TB SN，也可以混合自动请求重传(hybrid automatic repeat request，HARQ)进程ID。比如，在本申请实施例中，编号为0的传输块通过HARQ进程0传输，编号为1的传输块通过HARQ进程1传输，依次类推，编号为M-1的传输块通过HARQ进程M-1传输，那么，可直接利用HARQ进行标识，标识不同传输块的先后传输顺序。
可替代性的，在本申请实施例中，M个传输块中的每个传输块可不包括传输块标识信息，而第二网络设备可采用以下方式，通知终端设备不同传输块的选后顺序，采用不同的HARQ进程，分别向终端设备发送所述M个传输块。
针对以上介绍，在本申请下述实施例中，以图3所示的层2包括PDCP层和MAC层，PDCP层进行头压缩、加密和完整性保护等操作，MAC层进行复用、组包等操作，将N个数据包放在同一个传输块TB内，N取值为3进行举例说明。
如图5所示，一簇(cluster)数据中包括三个数据包，分别为数据包0、数据包1和数据包2，其中，每个数据包包括头(header)部分和数据(data)部分。在本申请实施例中，第二网络设备(比如，基站)可首先对上述三个数据包进行PDCP层的头压缩操作，然后进行PDCP层的加密和完整性保护等操作，最后进行MAC层的组包操作，将加密后上述三个数据包，放入一个TB中。其中，该TB中还包括上述三个数据包中每个数据包的大小(legnth)信息，所述数据包的大小信息可具体指每个数据包所占的比特数。关于数据包的大小，可具体参见上述图4中的记载，在此不再说明。
针对上述图5所示的数据处理过程，可具体应用于周期性业务的处理，具体为：
对于周期性的业务，其数据模型的参数可如表1所示，可以看出，数据传输的端到端时延要求低于数据的产生周期，也即在任一时刻，在空口传输的数据包都来自同一簇数据。其中，在表1中，可具体用传输时延(transfer interval)表示数据的产生周期。
Figure PCTCN2019114419-appb-000001
表1
这就意味着，在任一时刻，空口中传输的数据包都来自同一簇数据。可以看出，不同簇的数据之间，没有重排序需求，同一簇的数据包，如果通过同一个TB传输，也不存在重排序需求，所以，可以将一簇数据包内的所有数据，通过一个TB传输，而不必增加传输块的编号(比如，该传输块的编号可以为下述TB SN或HARQ进程ID)。
比如，如图6所示，第二网络设备(比如，基站)在时间t1，接收第一簇数据，第一簇数据中包括数据包1、数据包2以及数据包3。第一簇数据可在时间t2到达终端设备(比如，操作臂)。第二网络设备在时间t3，接收第二簇数据，第二簇数据中包括数据包4、数据包5以及数据包6。上述第一簇数据和第二簇数据可为第一网络设备(比如，PLC控制器)产生的，且发送给上述第一网络设备的。可以看出，在第一簇数据到达终端设备后，才会产生第二簇数据，也即在t1至t2间的时间段内，在空口中传输的仅有第一簇数据。因此，如果将一簇数据放到同一个TB包内传输，无需对TB包进行排序。
在本申请下述实施例中，以图3所示的层2包括PDCP层和MAC层，PDCP层进行头压缩、加密和完整性保护等操作，MAC层进行组包操作，将N个数据包放在M个传输块TB内，N取值为3，M取值为2进行举例说明。
如图7所示，一簇数据中包括三个数据包，分别为数据包0、数据包1和数据包2，其中，每个数据包包括头(header)部分和数据(data)部分。其中，第二网络设备(比如基站)可首先对上述3个数据包，进行PDCP层的头压缩，然后进行PDCP层的加密，最后进行MAC层的组包。在本申请实施例中，可将上述三个数据包放到两个传输块TB内，分别为TB1、TB2，TB1中包括数据包0和数据包1，TB2中包括数据包2。其中，TB1中还包括数据包0和数据包1的大小(legnth)信息，TB2中还包括数据包2的大小信息。可选的，TB1中还包括TB1的TB SN，TB2中还包括TB2的TB SN，比如，TB1的TB SN的取值可为0，TB2的TB SN的取值可为1。如果终端设备先收到TB SN＝0的TB1，终端 设备可对TB1进行MAC层和PDCP层的解封装，且将解封装后的数据包递交上层(比如，应用层)。如果终端设备先收到TB SN＝1的TB2，终端设备可等待TB SN＝0的TB1，如果在预设时间(所述预设时间可具体指端到端时延，比如图6所示的t2)内，接收到TB SN＝0的TB1，终端设备可分别对TB SN＝0的TB1和TB SN＝1的TB2进行PDCP层和MAC的解封装，且将解封装后的数据包依次递交至上层。如果在预设时间内，未接收到TB SN＝0的TB1，终端设备可对TB SN＝1的TB 2进行PDCP层和MAC层的解封装，且将解封装后的数据包递交至上层。
在图7所示的实施例中，以将一簇数据分成两个TB传输为例进行说明，并不作为对本申请实施例的限定。比如，在本申请实施例中，可将一簇数据分为大于或等于2的任意个TB进行传输。实际上，一簇数据可划分为几个TB进行传输，是可以配置的。而TB SN的长度，与TB的数量相关。比如，TB的数量为2，TB SN只需1比特，TB的数量为4，TB SN需要2比特，TB的数量为8，TB SN需要3比特。
需要说明的是，在图7所示的实施例中，所述TB SN可用HARQ进程ID替代，关于如何用HARQ进程ID替代，可参见上述记载，在此不再说明。
在图7所示的实施例中，将一簇数据放在多个TB内传输，与将一簇数据放在一个TB内传输相比，具有以下优点：
第一：如果将一簇数据放在一个TB内传输，如果该TB传输失败，那么一簇数据将全部丢失。
第二：对于工业控制类型的业务，终端设备侧包括存活时间(survival time)参数，关于存活时间参数可参见表1中的记载。所述存活时间参数，表示终端设备的应用层在没有收到数据的情况下，可保持在工作状态的时间，一旦超过该时间，终端设备的应用层将进入安全停机状态，停止工作。其中，在工业生产中，为了防止终端设备进入安全停机状态，需保证终端设备在存活时间段内可接收到数据包。如果将一簇数据放在一个TB内传输，如果该TB丢失，终端设备可能会出现超过存活时间，接收不到TB的情况。而在图7所述的实施例中，将一簇数据分成多个TB传输，只有所有TB都传输失败，才会导致终端设备进入安全停机状态，减小终端设备进入安全停机状态的概率。
在本申请下述实施例中，以图3所示的层2包括PDCP层和MAC层，PDCP层进行头压缩和加密操作，MAC层进行组包操作，将N个数据包放在同一个传输块TB内，N取值为3，且传输块TB内不包括数据包的大小信息，第二网络设备(比如基站)对数据包的处理过程，可参见图8所示。
由于在工业控制中的数据模型中，每个数据包的尺寸是固定的，比如可参见上述表1所示，数据包的大小可是200Bytes。针对上述数据结构，可以对TB的数据结构进一步简化，取消数据包头中的长度指示字段，第二网络设备(比如基站)可将数据包的大小通过配置消息通知终端设备。终端设备在收到所述配置消息后，即可得知每个数据包的大小，进而可根据数据包的大小对收到的TB进行读取。针对数据包的大小，可具体参见上述图4中的记载，在此不再说明。
可见，在本申请实施例中，将数据包的大小通过配置信息通知终端设备，取消TB包头中的长度指示字段，可减少TB包头的负荷。
针对上述图4实施例中，由终端设备触发第二网络设备发送至少一个传输块的情况，本申请提供下述应用场景：
第二网络设备可通过配置消息为终端设备配置一门限，该门限小于终端设备的存活时间。终端设备侧可设置一定时器，如果当定时器的定时时长超过上述门限，还未收到传输块时，即发送指示信息至第二网络设备，比如所述指示信息可为上述图4所示实施例中的第二指示信息。第二网络设备在接收到该指示信息后，可发送传输块。可选的，第二网络设备可采用正常配置发送传输块，也可采用更加鲁棒的方式发送传输块，比如，加大传输块的传输功率等。终端设备侧在接收到传输块时，即重启定时器。采用上述方式，可防止终端设备进入安全停机状态。
如图9所示，本申请实施例提供一种通信方法的流程，该流程中的网络设备可对应于上述图1中的基站，终端设备可对应于上述图1所示的终端设备。该流程可为：
S901.网络设备发送第一指示信息，所述第一指示信息用于指示所述终端设备所使用无线网络临时标识(radio network tempory identity，RNTI)的长度。
在无线通信系统中，RNTI用于临时标识终端设备，在第五代移动通信系统中，RNTI的长度是16比特，最多可以表示65536个终端。上述第一指示信息所指示的RNTI的长度可小于16比特，比如，所述第一指示信息所指示的RNTI的长度可为4比特。
S902.终端设备接收第一指示信息。
S903.终端设备发送随机接入前导码。
S904.网络设备接收随机接入前导码。
S905.网络设备发送随机接入响应(random access response，RAR)消息。
S906.终端设备接收RAR消息。
S907.终端设备根据第一指示信息以及RAR消息中的RNTI，确定所述终端设备所使用的RNTI。
其中，RAR消息中可包括RNTI，RNTI可为临时小区无线网络标识(temporary，cell RNTI，C-RNTI)。在本申请实施例中，对RAR消息的格式并不作限定。比如，如图10所示，RAR消息中可包括7个字段，依次为Oct1至Oct7。其中，Oct1中包括3个预留(reserved，R)字段和一个定时提前命令(timing advance command)字段。Oct2包括定时提前命令和上行授权(uplink grant,UL Grant)字段。Oct3、Oct4和Oct5字段中包括UL Grant字段。Oct6和Oct7中包括C-RNTI字段。或者，所述RAR消息中也可仅包括Oct1至Oct6字段，不包括Oct7字段。或者，所述RAR消息中的UL grant、Timing Advance Command等字段的长度也是可变的，只要网络设备预先配置，且通知终端设备即可。
具体的，终端设备可根据第一指示信息，在RAR消息的目标位置取相应长度的RNTI，作为终端设备自己所使用的RNTI。所述目标位置可通过协议规定，或者，网络设备通过配置消息通知终端设备。比如，第一指示信息所指示的RNTI的长度为4比特，如图10所示，终端设备可在Oct6字段中的Temporary C-RNTI中取前4比特数据(可参见图10中用斜线填充的部分)，作为终端设备自己所使用的RNTI。相应的，Oct6字段中的前四比特位置即为上述目标位置。在图10所示的实施例中，是以取Temporary C-RNTI中的前四比特作为终端设备使用的RNTI，进行举例说明的，并不作为对本申请实施例的限定。比如，所述终端设备可在上述图10的Oct6中Temporary C-RNTI的任意位置，取任意比特，作为终端设备的RNTI，所述位置和比特数可由网络设备预先配置。
由于在实际通信过程中，在下行控制信息(down control information,DCI)中会携带终端设备的RNTI，采用本申请的方案，终端设备的RNTI会更短，DCI所占的开销会较小， DCI的传输更加鲁棒。
针对上述图9所示的流程，本申请提供一种应用场景，所述应用场景并不作为对本申请的限定，在该应用场景中“以图9中的网络设备为工业控制用基站，终端设备为UE”进行举例说明：在工业控制场景中，工业控制用基站在上电后，可通过广播消息将本小区所支持的RNTI的长度通知各UE，UE获得该信息后，可根据上述广播消息所通知的RNTI长度，在RAR消息中取出终端设备所使用的RNTI具体值，用于后续通信。比如，如图10所示，如果基站通知RNTI的长度为4比特，UE在接收到RAR消息后，可在RAR消息的Temporary C-RNTI中取出4比特，作为终端设备自己使用的RNTI，终端设备所取出的4比特RNTI，具体参见图10所示的斜线填充部分。
针对上述图9所示的流程，本申请提供另一种应用场景，所述应用场景并不作为对本请的限定，在该应用场景中“以图9中的网络设备为工业控制用基站，终端设备为操作臂”进行举例说明：
实际应用中，同一小区内，工业控制用基站既服务于工业控制的操作臂，又服务于普通UE。工业控制用基站可为操作臂分配第一长度的RNTI，为普通UE分配第二长度的RNTI，第一长度与第二长度相同，或不同。比如，第一长度为4比特，第二长度为16比特。操作臂和普通UE收到后，可根据自己的类型，选择随机接入的时频资源及随机接入码，发起随机接入流程。工业控制用基站发送第一随机接入响应至操作臂，操作臂在第一随机接入响应消息中截取第一长度的RNTI，作为操作臂的RNTI。工业控制用基站发送第二随机接入响应至普通UE，普通UE在第二随机接入响应中截取第二长度的RNTI，作为普通UE的RNTI。其中，第一随机接入响应与第二随机接入响应的类型可相同，也可不同。
可选的，工业控制用基站还可为操作臂分配第三长度的UL grant，为普通UE分配第四长度的UL grant，第三长度与第四长度相同，或不同。比如，第三长度为16比特，第四长度为25比特。
如图11所示，本申请还提供一种通信方法的流程，流程中以“基站为普通UE和操作臂分配不同长度的RNTI和UL grant，且为普通UE和操作臂分配不同类型的随机接入响应为例”，进行说明：
S111.基站发送第一指示信息和第二指示信息，所述第一指示信息用于指示操作臂的RNTI长度，第二指示信息用于指示操作臂UL grant的长度。
S112.操作臂接收第一指示信息和第二指示信息。
S113.操作臂发送随机接入前导码。
S114.基站发送第三指示信息和第四指示信息，所述第三指示信息用于指示普通UE的RNTI长度，第四指示信息用于指示普通UE的UL grant的长度。
S115.普通UE接收第三指示信息和第四指示信息。
S116.普通UE发送随机接入前导码。
S117.基站根据随机接入前导码的位置或类型，发送第一类型的RAR消息和第二类型的RAR消息。
S118.操作臂接收第一类型的RAR消息。
S119.普通UE接收第二类型的RAR消息。
在本申请实施例中，由于在下行控制信息DCI会携带操作臂或普通UE的RNTI，采用本申请实施例中的方法，使得操作臂或普通UE均使用更短的RNTI，减少DCI的尺寸， 增加传输的鲁棒性。
需要说明的是，在图11所示的实施例中，并不限定S111至S119的先后执行顺序。比如，S114可位于S111至S113的前面，也可位于S111至S113的后面。
在第五代移动通信系统中，HARQ进程的数量恒定为8。由于工业控制中的业务需求，同时在途的数据包数量减少，所以，HARQ进程的数量也可以降低，这样，可以减小DCI尺寸，增加鲁棒性。
基于以上，如图12所示，本申请提供一种通信方法的流程，该流程可减少HARQ进程的数量，该流程中的网络设备可对应于上述图1中的基站，终端设备可对应于上述图1中的终端设备。该流程可为：
S120.网络设备确定第一指示信息，所述第一指示信息用于指示终端设备所使用HARQ进程的数量，或者，所述第一指示信息用于指示所述HARQ进程的标识所占用的比特数。
其中，网络设备可采用广播信令，或预设信令，比如RRC信令，发送第一指示信息，所述第一指示信息所指示的HARQ进程数量可小于终端设备目前所采用的HARQ进程数量。比如，终端设备目前支持8个HARQ进程，那么，第一指示信息所指示的HARQ进程数量可小于8。
S121.网络设备发送所述第一指示信息。
S122.终端设备接收第一指示信息。
S123.终端设备根据所述第一指示信息，确定所述终端设备所使用HARQ进程的数量。
在本申请实施例中，终端设备所使用的HARQ进程ID的尺寸更小，DCI更鲁棒。
需要说明的，本申请实施例中，图4、图9和图12所示的方案，可单独使用，也可结合使用。比如，终端设备可在随机接入过程中，使用图9所示的方案，随机接入过程结束，在后续数据传输过程中，使用图4所示的方案。
基于以上构思，如图13所示，本申请实施例提供一种通信装置1300，该通信装置1300包括收发单元1301和处理单元1302。
在本申请的一示例中，所述通信装置1300可应用于网络设备或网络设备的芯片，用于执行图4、图9、图11或图12中以网络设备为执行主体的步骤。
比如，收发单元1301，用于接收来自第二网络设备的第一信息，所述第一信息中包括N个数据包，所述N为正整数；处理单元1302，用于根据所述N个数据包，生成至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；收发单元1301，还用于向终端设备发送所述至少一个传输块。
在本申请的一示例中，通信装置1300可应用于终端设备或终端设备的芯片，用于执行图4、图9、图11或图12中以终端设备为执行主体的步骤。
比如，收发单元1301用于接收第一网络设备发送的至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；处理单元1302，用于对所述至少一个传输块进行处理，获得N个数据包，所述N为正整数。
关于收发单元1301和处理单元1302的具体功能，可参见上述图4、图9、图11或图12中的记载。
基于以上构思，如图14所示，本申请实施例提供一种通信装置1400，该通信装置1400 可应用于上述图4、图9、图11或图12所示的网络设备或网络设备中的芯片，也可应用于上述图4、图9、图11或图12所示的终端设备或终端设备中的芯片。
该通信装置1400可包括处理器1401。可选的，该通信装置还可包括存储器1402，处理器401和存储器1402耦合。进一步的，该装置还可包括接收器1404和发送器1405。进一步的，该装置还可包括总线系统1403。
其中，处理器1401、存储器1402、接收器1404和发送器1405可通过总线系统1403相连，该存储器1402可用存储指令，该处理器1401可用于执行该存储器1402存储的指令，以控制接收器1404接收信号，并控制发送器1405发送信号，完成上述图4、图9、图11或图12所示流程中以网络设备或终端设备为主体的步骤。
其中，接收器1404和发送器1405可以为不同的物理实体，也可为相同的物理实体，可以统称为收发器。存储器1402可以集成在处理器1401中，也可以是与处理器1401不同的物理实体。
作为一种实现方式，接收器1404和发送器1405的功能可以考虑通过收发电路或收发的专用芯片实现。处理器1401可以考虑通过专用处理芯片、处理电路、处理器或通用芯片实现。
作为另一种实现方式，可以考虑使用计算机的方式，来实现本申请实施例提供的网络设备或终端设备的功能。即将实现处理器1401、接收器1404和发送器1405功能的程序代码存储在存储器1402中，通用处理器可通过执行存储器中的代码来实现处理器1401、接收器1404和发送器1405的功能。
该通信装置1400所涉及的与本申请提供的技术方案相关的概念、解释和详细说明以及其他步骤，可参见前述方法或其它实施例中关于这些内容的描述，此处不作赘述。
比如，在本申请的一示例中，该通信装置900可应用于网络设备或网络设备中的芯片，所述通信装置1400可用于执行上述图4所示流程中，以第一网络设备为执行主体的步骤。比如，接收器1404，可用于接收来自第二网络设备的第一信息，处理器1401，可用于根据所述N个数据包，生成至少一个传输块，发送器1405，可用于向终端设备发送所述至少一个传输块。
比如，在本申请的一示例中，该通信装置1400可应用于终端设备或终端设备中的芯片，所述通信装置1400可用于执行上述图4所示流程中，以终端设备为执行主体的步骤。比如，接收器1404，可用于接收第一网络设备发送的至少一个传输块。处理器1401，可用于对所述至少一个传输块进行处理，获得N个数据包。
关于处理器1401、接收器1404以及发送器1405的介绍，可参见上述图4、图9、图11或图12所示流程的介绍，在此不再赘述。
与上构思相同，如图15所示，本申请还提供一种网络设备，比如，基站的结构示意图。该基站可应用于上述图1所示通信系统的场景中，该基站可以为上述图4、图9、图11或图12所示流程中的网络设备。
具体的，基站1500可包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)1501和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1502。该RRU1501可以为收发单元、收发机、收发电路、或者收发器等等，其可以包括至少一个天线15011和射频单元15012。该RRU1501部分可以用于射频信号的收发以及射频信号与基带信号的转换，例如接收来自第二网络设备的第一信息，或向终端设备发送至 少于一个传输块等。该BBU1502部分可以用于基带处理，对基站进行控制等。该RRU1501和BBU1502可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
该BBU1502为基站的控制中心，也可以称为处理单元，用于完成基带处理功能，如信道编码，复用，调制，扩频等。例如该BBU(处理单元)可以用于控制基站执行图4、图9、图11或图12所示流程中以网络设备为执行主体的步骤。
在一个示例中，该BBU1502可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如NR网)，也可以分别支持不同接入制式的无线接入网。该BBU1502还可包括存储器15021和处理器15022。该存储器15021用以存储必要的指令和数据。例如存储器15021存储上述实施例中的“根据所述N个数据包，生成至少一个块输块”的指令，该处理器15022用于控制基站进行必要的动作。此外每个单板上还可以设置有必要的电路。
与上述构思相同，图16提供了一种终端设备的结构示意图，该终端设备可适用于上述图4、图9、图11或图12所示流程，以终端设备为执行主体的步骤，为了便于说明，图16仅示出了终端设备的主要部件。如图16所示，终端设备1600可包括处理器、存储器、控制电路，可选的，还可以包括天线和/或输入输出装置。处理器可用于对通信协议以及通信数据进行处理，以及对用户设备进行控制，执行软件程序，处理软件程序的数据。存储器可以存储软件程序和/或数据。控制电路可用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，可用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏、键盘等，可用于接收用户输入的数据以及对用户输出数据。
在本申请实施例中，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到用户设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图16仅示出了一个存储器和处理器。在实际的用户设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器可用于对通信协议以及通信数据进行处理，中央处理器可用于对整个用户设备进行控制，执行软件程序，处理软件程序的数据。图16中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。该基带处理器也可以表述为基带处理电路或者基带处理芯片。该中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
示例性的，在本申请实施例中，可以将具有收发功能的天线和控制电路作为终端设备 1600的收发单元1601，将具有处理功能的处理器视为终端设备1600的处理单元1602。如图16所示，终端设备1600可包括收发单元1601和处理单元1602。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元1601中用于实现接收功能的器件视为接收单元，将收发单元1601中用于实现发送功能的器件视为发送单元，即收发单元1601包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元也可以称为发射机、发射器或发射电路等。
应理解，上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备完全对应，由相应的模块或单元执行相应的步骤，例如发送模块(发射器)方法执行方法实施例中发送的步骤，接收模块(接收器)执行方法实施例中接收的步骤，除发送接收外的其它步骤可以由处理模块(处理器)执行。具体模块的功能可以参考相应的方法实施例。发送模块和接收模块可以组成收发模块，发射器和接收器可以组成收发器，共同实现收发功能；处理器可以为一个或多个。
根据本申请实施例提供的方法，本申请实施例还提供一种通信系统，其包括前述的第一网络设备和终端设备。可选的，还可包括第二网络设备，所述第二网络设备用于向第一网络设备发送第一信息。
基于以上实施例，本申请实施例还提供一种计算机可读存储介质，所述存储介质存储有指令，当所述指令被执行时，使得上述任意一个或多个实施例提供的方法被执行。该计算机存储介质可以包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
基于以上实施例，本申请实施例还提供一种计算机程序产品，所述计算机程序产品包括计算机指令，当所述计算机指令被执行时，使得上述任意一个或多个实施例提供的方法被执行。基于以上实施例，本申请实施例还提供了一种芯片，该芯片包括处理器，用于实现上述任意一个或多个实施例所涉及的功能，例如获取或处理上述方法中所涉及的信息或者消息。可选地，该芯片还包括存储器，该存储器，用于存储处理器所执行的程序指令和数据。该芯片，也可以包含芯片和其他分立器件。
应理解，在本申请实施例中，处理器可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application-specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、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，也可以是任何常规的处理器等。
该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。
该总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统。在实现过程中，上述方法的各步骤可以通过处理器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步骤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，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系；在本申请的公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。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。

Claims (24)

  1. 一种通信方法，其特征在于，包括：
    第一网络设备接收来自第二网络设备的第一信息，所述第一信息中包括N个数据包，所述N为正整数；
    所述第一网络设备根据所述N个数据包，生成至少一个传输块，所述传输块是媒体接入控制MAC层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；
    所述第一网络设备向终端设备发送所述至少一个传输块。
  2. 如权利要求1所述的方法，其特征在于，所述第一网络设备根据所述N个数据包，生成至少一个传输块，包括：
    所述第一网络设备对所述N个数据包仅进行MAC层的封装，获得所述至少一个传输块；
    或者，所述第一网络设备对所述N个数据包仅进行PDCP层和MAC层的封装，获得所述至少一个传输块。
  3. 如权利要求1或2所述的方法，其特征在于，所述传输块的数量为一个，所述一个传输块中包括所述N个数据包。
  4. 如权利要求3所述的方法，其特征在于，所述一个传输块中还包括所述N个数据包中每个数据包的大小信息，或者，所述一个传输块中还包括所述N个数据包中每个数据包的大小索引信息。
  5. 如权利要求1或2所述的方法，其特征在于，所述传输块的数量为M个，所述M个传输块中包括所述N个数据包，其中，所述M为大于或等于2的整数。
  6. 如权利要求5所述的方法，其特征在于，所述M个传输块中的每个传输块中包括所述传输块所包括数据包的大小信息，或者，所述M个传输块中的每个传输块中包括所述传输块所包括数据包的大小索引信息。
  7. 如权利要求5或6所述的方法，其特征在于，所述M个传输块中的每个传输块中还包括传输块标识信息，所述传输块标识信息用于标识所述M个传输块的先后顺序。
  8. 如权利要求5或6所述的方法，其特征在于，所述第一网络设备向终端设备发送所述至少一个传输块，包括：
    所述第一网络设备采用不同的混合自动请求重传HARQ进程，分别向所述终端设备发送所述M个传输块。
  9. 如权利要求1、2、3、5、7、8任一项所述的方法，其特征在于，所述方法还包括：
    所述第一网络设备向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述N个数据包中每个数据包的大小。
  10. 如权利要求1至9任一项所述的方法，其特征在于，所述第一网络设备向终端设备发送所述至少一个传输块，包括：
    所述第一网络设备接收所述终端设备发送的第二指示信息，所述第二指示信息用于指示所述至少一个传输块的发送；
    所述第一网络设备根据所述第二指示信息，向所述终端设备发送所述至少一个传输块。
  11. 一种通信方法，其特征在于，包括：
    终端设备接收第一网络设备发送的至少一个传输块，所述传输块是媒体接入控制MAC 层生成的，所述传输块中不包括分组数据汇聚协议PDCP序列号SN；
    所述终端设备对所述至少一个传输块进行处理，获得N个数据包，所述N为正整数。
  12. 如权利要求11所述的方法，其特征在于，所述终端设备对所述至少一个传输块进行处理，获得N个数据包，包括：
    所述终端设备对所述至少一个传输块仅进行MAC层的解封装，获得所述N个数据包；
    或者，所述终端设备对所述至少一个传输块仅进行PDCP层和MAC层的解封装，获得所述N个数据包。
  13. 如权利要求11或12所述的方法，其特征在于，所述传输块的数量为一个，所述一个传输块中包括所述N个数据包。
  14. 如权利要求13所述的方法，其特征在于，所述一个传输块中还包括所述N个数据包中每个数据包的大小信息，或者，所述一个传输块中还包括所述N个数据包中每个数据包的大小索引信息。
  15. 如权利要求11或12所述的方法，其特征在于，所述传输块的数量为M个，所述M个传输块中包括所述N个数据包，其中M为大于或等于2的整数。
  16. 如权利要求15所述的方法，其特征在于，所述M个传输块中的每个传输块中包括所述传输块所包括的每个数据包的大小信息，或者，所述M个传输块的每个传输块中包括所述传输块中所包括的每个数据包的大小索引信息。
  17. 如权利要求15或16所述的方法，其特征在于，所述M个传输块中的每个传输块中还包括传输块标识信息，所述传输块标识信息用于标识所述M个传输块的先后顺序。
  18. 如权利要求15或16所述的方法，其特征在于，所述终端设备接收第一网络设备发送的至少一个传输块，包括：
    所述终端设备采用不同的混合自动请求重传HARQ进程，分别接收所述M个传输块。
  19. 如权利要求11、12、13、15、17、18任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述第一网络设备发送的第一指示信息，所述第一指示信息用于指示所述N个数据包中每个数据包的大小。
  20. 如权利要求11至19任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备向所述第一网络设备发送第二指示信息，所述第二指示信息用于指示所述至少一个传输块的发送。
  21. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合，读取并执行所述存储器中的指令，以实现权利要求1至20任一项所述的方法。
  22. 如权利要求21所述的装置，其特征在于，还包括所述存储器。
  23. 一种计算机可读存储介质，其特征在于，所述存储介质存储有指令，当所述指令被执行时，使得如权利要求1至20中任一项所述的方法被执行。
  24. 一种通信系统，其特征在于，包括第一网络设备和终端设备；
    其中，所述第一网络设备用于执行权利要求1至10任一项所述的方法，所述终端设备用于执行权利要求11至20任一项所述的方法。
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