WO2019191952A1 - 数据传输方法、通信设备及网络设备 - Google Patents

数据传输方法、通信设备及网络设备 Download PDF

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Publication number
WO2019191952A1
WO2019191952A1 PCT/CN2018/081965 CN2018081965W WO2019191952A1 WO 2019191952 A1 WO2019191952 A1 WO 2019191952A1 CN 2018081965 W CN2018081965 W CN 2018081965W WO 2019191952 A1 WO2019191952 A1 WO 2019191952A1
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WO
WIPO (PCT)
Prior art keywords
tbs
indication information
mode
tbss
tbs set
Prior art date
Application number
PCT/CN2018/081965
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English (en)
French (fr)
Inventor
王宏
赵越
余政
张戬
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201880091252.6A priority Critical patent/CN111886817B/zh
Priority to PCT/CN2018/081965 priority patent/WO2019191952A1/zh
Priority to EP18913973.6A priority patent/EP3767852A4/en
Publication of WO2019191952A1 publication Critical patent/WO2019191952A1/zh
Priority to US17/035,200 priority patent/US11758522B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the 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
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • 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

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method, a communication device, and a network device.
  • LTE MTC Long Term Evolution Machine Type Communication
  • NB-IoT Narrow Band Internet of Things
  • an Early Data Transmission (EDT) method is usually adopted.
  • the base station when performing data advance transmission, the base station broadcasts a system message, where the system message includes a TBS threshold, and when the terminal device receives the system message, and determines that the data volume of the uplink data to be sent is less than or equal to the TBS.
  • the threshold a message indicating the EDT is sent to the base station, so that the base station allocates resources for transmitting the uplink data to the terminal device.
  • the resource utilization efficiency of this method may be lower.
  • the present application provides a data transmission method, a communication device, and a network device, so as to improve resource utilization efficiency in the process of data advance transmission.
  • an embodiment of the present application provides a data transmission method, where the method may include:
  • the target TBS is a minimum TBS of the TBS in the first TBS set that is greater than or equal to the TBS required by the first data;
  • the first data when the first data is sent, the data is not directly transmitted according to the TBS threshold broadcasted by the network device, as in the prior art, but the first TBS set is first obtained through the second indication information, and is in the first TBS.
  • the minimum TBS of the TBS required to be greater than or equal to the first data is selected as the target TBS in the set. Since the target TBS is greater than or equal to the TBS required for the first data, the first data is not affected by the first TBS according to the target TBS.
  • the transmission of data, and since the target TBS is a minimum TBS greater than or equal to the TBS required for the first data, such that "0" is additionally padded with fewer bits, resulting in less waste of resources, thereby improving resource utilization.
  • the first TBS set is a subset of the second TBS set, where the first TBS set includes a TBS threshold that is less than or equal to the first indication information in the second TBS set and is indicated by the first indication information.
  • the difference between the TBS thresholds is the smallest N TBS, and N is the number of candidate TBSs.
  • the first TBS set is a subset of the second TBS set
  • the first TBS set includes N TBSs in the second TBS set
  • the N TBSs include a minimum TBS in the second TBS set.
  • the maximum TBS, N is equal to the number of candidate TBSs, and the N TBSs satisfy the average distribution in the second TBS set.
  • the method may further include:
  • the third indication information is received from the network device, where the third indication information is used to indicate an enhanced coverage level, and the enhanced coverage level is associated with the number of candidate TBSs.
  • the second TBS set is specified by a communication protocol
  • the configuration information is received from the network device, and the configuration information is used to indicate the second TBS set.
  • the second TBS set is a TBS set in the coverage enhancement mode, where the coverage enhancement mode is a CE Mode A mode or a CE Mode B mode;
  • the second TBS set includes 328, 376, 392, 408, 424, 440, 456, 472, 488, 504, 536, 552, 584, 600, 616, 680, 712, 744. 776, 808, 840, 872, 904, 936, and 1000; or, if the coverage enhancement mode is the CE Mode A mode, the second TBS set includes 328, 424, 536, 616, 712, 808, 904, and 1000; or
  • the second TBS set includes 328, 392, 408, 424, 456, 472, 504, 536, 584, 600, 616, 680, 712, 776, 808, 872, and 936; If the coverage enhancement mode is the CE Mode B mode, the second TBS set includes 328, 408, 504, 584, 680, 776, 872, and 936.
  • the receiving, by the network device, the second indication information may include:
  • the receiving, by the network device, the second indication information may include:
  • Message 2 is received from the network device, and message 2 includes second indication information.
  • the MAC subheader included in the message 2 includes the second indication information
  • the random access response RAR included in the message 2 includes the second indication information; or
  • the uplink grant UL Grant included in the message 2 includes the second indication information.
  • the first data is a message 3 including user plane data.
  • the method is used in a random access procedure.
  • the embodiment of the present application provides a data transmission method, where the method may include:
  • the second indication information is used to indicate the number N of candidate TBSs;
  • the number of candidate TBSs is the number of elements in the first TBS set, and the maximum TBS in the first TBS set is less than or equal to the first indication TBS threshold indicated by the information;
  • the first data is sent by the terminal device according to the target TBS, and the target TBS is a minimum TBS of the TBS in the first TBS set that is greater than or equal to the TBS required by the first data.
  • the first TBS set is a subset of the second TBS set, where the first TBS set includes a TBS threshold that is less than or equal to the first indication information in the second TBS set and is indicated by the first indication information.
  • the difference between the TBS thresholds is the smallest N TBS, and N is the number of candidate TBSs.
  • the first TBS set is a subset of the second TBS set
  • the first TBS set includes N TBSs in the second TBS set
  • the N TBSs include a minimum TBS in the second TBS set.
  • the maximum TBS, N is the number of candidate TBSs, and the N TBSs satisfy the average distribution in the second TBS set.
  • the method may further include:
  • the second TBS set is specified by a communication protocol
  • the second TBS set is a TBS set in the coverage enhancement mode, where the coverage enhancement mode is a CE Mode A mode or a CE Mode B mode;
  • the second TBS set includes 328, 376, 392, 408, 424, 440, 456, 472, 488, 504, 536, 552, 584, 600, 616, 680, 712, 744. 776, 808, 840, 872, 904, 936, and 1000; or, if the coverage enhancement mode is the CE Mode A mode, the second TBS set includes 328, 424, 536, 616, 712, 808, 904, and 1000; or
  • the second TBS set includes 328, 392, 408, 424, 456, 472, 504, 536, 584, 600, 616, 680, 712, 776, 808, 872, and 936; If the coverage enhancement mode is the CE Mode B mode, the second TBS set includes 328, 408, 504, 584, 680, 776, 872, and 936.
  • the sending the second indication information to the terminal device may include:
  • the sending the second indication information to the terminal device may include:
  • the message 2 is sent to the terminal device, and the message 2 includes the second indication information.
  • the MAC subheader included in the message 2 includes the second indication information
  • the random access response RAR included in the message 2 includes the second indication information; or
  • the uplink grant UL Grant included in the message 2 includes the second indication information.
  • the first data is a message 3 including user plane data.
  • the method is used in a random access procedure.
  • an embodiment of the present application provides a communication device, including a processor, configured to couple with a memory, to read and execute an instruction in a memory, to implement the method as shown in any one of the foregoing first aspects.
  • the communications device may further include: a memory.
  • an embodiment of the present application provides a network device, including a processor, where a processor is configured to couple with a memory to read and execute an instruction in a memory to implement the method as shown in any one of the foregoing second aspects.
  • the network device may further include: a memory.
  • an embodiment of the present application provides a computer storage medium, including instructions, wherein when the instruction is run on a communication device, the communication device is caused to perform the method as shown in any one of the foregoing first aspects.
  • the embodiment of the present application provides a computer storage medium, including instructions, wherein when the instruction is run on a network device, the network device is caused to perform the method as shown in any one of the foregoing second aspects.
  • the data transmission method, the communication device, and the network device provided by the embodiment of the present application receive the first indication information and the second indication information that are sent by the network device, where the second indication information is used to indicate the number of candidate TBSs, so that the terminal device can Acquiring the first TBS set according to the second indication information, selecting a target TBS for transmitting the first data in the first TBS set, and then sending the first data to the network device according to the target TBS. It can be seen that, when the first data is sent, the data is not directly transmitted according to the TBS threshold broadcasted by the network device, as in the prior art, but the first TBS set is first obtained through the second indication information, and is in the first TBS.
  • the minimum TBS of the TBS required to be greater than or equal to the first data is selected as the target TBS in the set. Since the target TBS is greater than or equal to the TBS required for the first data, the first data is not affected by the first TBS according to the target TBS.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a data transmission method according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a message 2 according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of an E/T/R/R/BI MAC subheader according to an embodiment of the present application
  • FIG. 5 is a schematic structural diagram of a MAC RAR according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another MAC RAR according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of another data transmission method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the embodiments of the present application can be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a Wideband Code Division Multiple Access (Wideband Code). Division Multiple Access Wireless (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE), 5G communication system or other systems that may appear in the future, some of the following terms in this application The explanation will be made to facilitate understanding by those skilled in the art. It should be noted that, when the solution of the embodiment of the present application is applied to a 5G system or other systems that may appear in the future, the names of the network devices and the terminal may change, but this does not affect the implementation of the solution in the embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present disclosure.
  • the communication system may be applied to an MTC or an NB-IoT.
  • the communication system may include a network device and at least one terminal device. See FIG. 1 for communication.
  • the system is applied to the MTC, and includes the network device, the first terminal device, and the second terminal device as an example.
  • EDT Early Data Transmission
  • the network device may first broadcast a system message to the first terminal device and the second terminal device by using a system message, where the system message includes a maximum threshold value of the TBS for indicating that the terminal device can use the EDT, the first terminal device and the first
  • the system message includes a maximum threshold value of the TBS for indicating that the terminal device can use the EDT
  • the first terminal device and the first After receiving the system message, if the data volume of the uplink data to be sent is determined to be less than or equal to the TBS threshold, the first terminal device and the second terminal device need to be extra when the data volume is less than the TBS threshold. Fill "0" so that the TBS occupied by the data it sends is the maximum TBS threshold. However, this will make some resources useless. In order to transmit valid user data, resource utilization efficiency is low.
  • terminal equipment also known as terminal and user equipment
  • a device that provides voice and/or data connectivity to users, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • Common terminal devices include, for example, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a mobile internet device (MID), and a wearable device.
  • the wearable device includes, for example, a smart watch, a smart wristband, and a step counter. And so on.
  • a network device also known as a radio access network (RAN) device, is a device that accesses a terminal device to a wireless network, and includes network devices in various communication systems, including but not limited to : a base station, an evolved Node B (eNB), a radio network controller (RNC), a Node B (Node B, NB), a network device controller (BSC), a network device Base Transceiver Station (BTS), home network equipment (for example, Home evolved NodeB, or Home Node B, HNB), Baseband Unit (BBU), and the like.
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • BSC network device controller
  • BTS Base Transceiver Station
  • home network equipment for example, Home evolved NodeB, or Home Node B, HNB
  • BBU Baseband Unit
  • the network device includes network devices of various frequency standards, including but not limited to: a low frequency network device and a high frequency network device.
  • Multiple means two or more, and other quantifiers are similar. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • the embodiment of the present application provides a data transmission method, and the method can be applied to a random access process, so that the terminal device is transmitting.
  • the first indication information is received, where the first indication information is used to indicate a transport block size TBS threshold; and the first TBS set is obtained, and the target TBS for transmitting the first data is selected in the first TBS set;
  • the target TBS is a minimum TBS that is greater than or equal to the TBS required for the first data; after that, the first data is sent to the network device according to the target TBS.
  • the data transmission method provided by the embodiment of the present application when transmitting the first data, does not directly transmit data according to the TBS threshold broadcasted by the network device, but selects in the first TBS set, as in the prior art.
  • a minimum TBS of a TBS greater than or equal to the first data is used as the target TBS. Since the target TBS is greater than or equal to the TBS required for the first data, the transmission of the first data according to the target TBS does not affect the transmission of the first data. And because the target TBS is a minimum TBS that is greater than or equal to the TBS required for the first data, such that "0" is required to additionally fill fewer bits, so that waste of resources is less, thereby improving resource utilization.
  • the acquiring, by the terminal device, the first TBS set may be implemented in at least three possible manners, as follows:
  • the network device may send the second indication information to the terminal device, so that the terminal device receives the second indication information from the network device, and determines a TBS set according to the number of candidate TBSs;
  • the two indication information is used to indicate the number of candidate TBSs.
  • the network device may further send third indication information to the terminal device, where the third indication information is used to indicate an enhanced coverage level, and the coverage level and the number of candidate TBSs are enhanced. Association, that is, different enhancement coverage levels may correspond to the number of different candidate TBSs.
  • the network device may send the fourth indication information to the terminal device, so that the terminal device receives the fourth indication information from the network device, where the fourth indication information is used to indicate the first TBS set, the first TBS
  • the set contains values of an integer number of TBSs, so that the terminal device can directly determine the first TBS set according to the fourth indication information.
  • the embodiment of the present application is only described by taking the above two possible implementation manners as an example, but the present application is not limited thereto.
  • the data transmission method provided by the embodiment of the present application is described in detail in conjunction with the foregoing two possible implementation manners of the first TBS set.
  • FIG. 2 A schematic diagram of a data transmission method, which may include:
  • the network device sends the first indication information to the terminal device.
  • the first indication information is used to indicate a transport block size TBS threshold.
  • the terminal device may receive the first indication information by using the system message, where the receiving process is specifically: the network device may broadcast the system message, where the system message includes the first indication information, so that the terminal device The first indication information can be received through a system message.
  • the network device sends the second indication information to the terminal device.
  • the second indication information is used to indicate the number of candidate TBSs.
  • the purpose is to enable the terminal device to determine the first TBS set according to the number of candidate TBSs indicated by the second indication information, so as to select the TBS set in the TBS set.
  • the target TBS for transmitting the first data.
  • the network device may further send third indication information to the terminal device, where the third indication information is used to indicate an enhanced coverage level, and the coverage level is enhanced.
  • the number of candidate TBSs is associated, in other words, when determining the number of candidate TBSs, it is necessary to first determine an enhanced coverage level to determine the number of candidate TBSs according to the relationship between the enhanced coverage level and the number of candidate TBSs.
  • the second indication information may be sent to the terminal device in at least two possible manners, specifically:
  • the network device may send a system message to the terminal device, where the system message includes the second indication information, that is, the second indication information may be sent to the terminal device in the system message.
  • the system message carries the second indication information, it can be implemented as follows:
  • numTBS indicates the number of candidate TBSs.
  • the number of candidate TBSs may be 1, 2, 3, or 4.
  • the network device may further send third indication information to the terminal device, where the third indication information is used to indicate an enhanced coverage level, and the coverage level and the candidate are enhanced.
  • the number of TBSs is associated, that is, the number of identical or different candidate TBSs corresponding to different enhanced coverage levels.
  • the third indication information may also be sent to the terminal device in the system message.
  • the system message carries the second indication information and the third indication information, the system information can be implemented as follows:
  • numTBS:: INTEGER(1,...,4)
  • numTBSList indicates a list of the number of candidate TBSs under different enhanced coverage levels
  • maxCE-level is the largest enhanced coverage level. For example, if max-CE-level is 4, the four enhanced coverage levels are 1, 2, 3, and 4, Each of the coverage levels corresponds to one numTBS, that is, the number of candidate TBSs. For example, the number of candidate TBSs in the enhanced coverage level 1 is 2, the number of candidate TBSs in the enhanced coverage level 2 is 4, the number of candidate TBSs in the enhanced coverage level 3 is 2, and the number of candidate TBSs in the enhanced coverage level 4 is 4.
  • the second indication information and the first indication information may be simultaneously carried in the system message and sent to the terminal device; or, when the candidate TBS When the number of the corresponding TBSs is increased, the first indication information, the second indication information, and the third indication information may be simultaneously carried in the system message and sent to the terminal device.
  • the network device may send a message 2 to the terminal device, where the message 2 includes the second indication information, that is, the second indication information may be carried in the message 2 and sent to the terminal device, where the message 2 includes the RAR in the random access process.
  • the second message may be sent to the terminal device, where the message 2 includes the RAR in the random access process.
  • the MAC sub-header included in the message 2 may include the second indication information, so that the second indication information is sent to the terminal device by using the MAC sub-header; or
  • the random access response RAR included in the message 2 may include the second indication information, so that the second indication information is sent to the terminal device by using the RAR; or the uplink grant UL Grant included in the message 2 may include the second indication information, thereby passing the UL The Grant sends the second indication information to the terminal device.
  • FIG. 3 is a schematic structural diagram of a message 2 according to an embodiment of the present application.
  • the message 2 may include a MAC header, one or more MAC RARs, and Padding (optional).
  • the MAC header may include one or more MAC subheaders, and the second indication information may be carried in the first subheader, that is, carried in the E/T/R/R/BI MAC subheader.
  • the bearer can be carried by the two reserved bits R in the E/T/R/R/BI MAC subheader.
  • FIG. 4 is an E/T/R/R/BI according to an embodiment of the present application.
  • the terminal device that indicates the EDT to the network device through the Preamble needs to read the two reserved bits R, for example, when the two reserved bits R are 00, the number of candidate TBSs indicated by the second indication information is one, and when the two reserved bits R are 01, the number of candidate TBSs indicated by the second indication information is two, when the two reserved bits R are 10:00, indicating that the number of candidate TBSs indicated by the second indication information is three, when two guarantees When the left bit R is 11, the number of candidate TBSs indicated by the second indication information is four, so that the second indication information is carried by the MAC subheader included in the message 2, and the second indication information is sent to the terminal device.
  • reserved bits R are merely exemplary, and methods using two reserved bits to indicate 1, 2, 3, 4 are all included in the present invention.
  • one of the reserved bits R is used to indicate two numbers, for example, "0" indicates 2, "1" indicates 4, and a method of using any reserved bit R to indicate any two of 1, 2, 3, 4 includes In the present invention.
  • FIG. 5 is a schematic structural diagram of a MAC RAR according to an embodiment of the present application, and a reserved bit in the MAC RAR.
  • the R carries the second indication information
  • the reserved bit R is 0, the number of candidate TBSs indicated by the second indication information is two, and when the reserved bit R is 1, the candidate TBS indicated by the second indication information is indicated.
  • the number of the information is four, so that the second indication information is carried by the RAR included in the message 2, and the second indication information is sent to the terminal device.
  • a method of using the reserved bit R to indicate any two of 1, 2, 3, 4 is included in the present invention.
  • FIG. 6 is another structure of the MAC RAR provided by the embodiment of the present application.
  • the second indication information is carried by the two reserved bits R
  • the MAC RAR in the scenario includes six reserved bits R
  • two reserved bits are randomly selected from the six reserved bits to carry the second indication information.
  • the two reserved bits R are 00
  • the number of candidate TBSs indicated by the second indication information is one
  • the two reserved bits R are 01
  • the candidate TBSs indicated by the second indication information are indicated. The number is two.
  • the number of candidate TBSs indicated by the second indication information is three, and when the two reserved bits R are 11, the candidate TBS indicated by the second indication information is indicated.
  • the number is four, so that the second indication information is carried by the MAC RAR included in the message 2, and the second indication information is sent to the terminal device.
  • the use of the above reserved bits R is merely exemplary, and methods using two reserved bits to indicate 1, 2, 3, 4 are all included in the present invention.
  • one of the reserved bits R is used to indicate two numbers, for example, "0" indicates 2, "1" indicates 4, and a method of using any reserved bit R to indicate any two of 1, 2, 3, 4 includes In the present invention.
  • the second indication information when the second indication information is carried in the uplink grant UL Grant in the message 2, as shown in Table 1 below, when the second indication information is carried by the uplink grant UL Grant, when the coverage enhancement mode of the terminal device is Mode A In the mode, the second indication information may be carried in the bit for indicating the MCS index in the uplink grant UL Grant, and the second indication information may be selected by the two bits in the three bits indicating the MCS index; when the terminal device When the coverage enhancement mode is the Mode B mode, the second indication information may be carried in two bits in the uplink grant UL Grant for indicating the TBS index, to carry the second indication information by using the two bits.
  • the uplink grant UL grant carries the second indication information, and sends the second indication information to the terminal device.
  • the use of the above bits is merely exemplary, and methods using two bits indicating 1, 2, 3, 4 are all included in the present invention.
  • one of the bits R is used to indicate two numbers, for example, "0" indicates 2, "1" indicates 4, and a method of using a reserved bit R to indicate any two of 1, 2, 3, 4 is included in In the present invention.
  • the terminal device may perform the following S203:
  • the terminal device acquires the first TBS set according to the second indication information.
  • the first TBS set is a set of candidate TBSs that can be used by the terminal device.
  • the first TBS set may be a subset of the second TBS set, the number of the elements in the first TBS set is equal to the number N of candidate TBSs, and the maximum TBS in the first TBS set is less than or equal to the first indication information. Indicated TBS threshold.
  • the first TBS set is a subset of the second TBS set. Therefore, before determining the first TBS set, the second TBS set needs to be acquired.
  • the second TBS set is specified by the communication protocol; or, when the second TBS set is acquired, the configuration information is received from the network device, and the second TBS set is acquired according to the configuration information.
  • the configuration information is used to indicate the second TBS set, that is, the value of the TBS in the second TBS set.
  • the second TBS set may be determined according to the coverage enhancement mode.
  • the coverage enhancement mode is the CE Mode A mode
  • the PUSCH TBS set in the CE Mode A mode includes 328, 376, 392, 408, 424, and 440. 456, 472, 488, 504, 536, 552, 584, 600, 616, 680, 712, 744, 776, 808, 840, 872, 904, 936 and 1000
  • the PUSCH TBS set is the second TBS set.
  • the coverage enhancement mode is the CE Mode B mode
  • the PUSCH TBS set in the CE Mode B mode includes 328, 392, 408, 424, 456, 472, 504, 536, 584, 600, 616, 680, 712, 776, 808. 872 and 936
  • the PUSCH TBS set is the second TBS set.
  • the second TBS set may also be the largest TBS set in the coverage enhancement mode, where the maximum TBS set is a set of a plurality of maximum TBSs, and the maximum TBS indicated by the first indication information is one element in the maximum TBS set.
  • Table 2 The first column in Table 2 is the index value of the maximum TBS value, the second column is the maximum TBS in CE Mode A mode, and the third column is the maximum TBS in CE Mode B mode.
  • x1, x2, x3, x4, x5 and x6 may be 376, 392, 408, 424, 440, Values in 456, 472, 488, 504, 536, 552, 584, 600, 616, 680, 712, 744, 776, 808, 840, 872, 904, 936; y1, y2, y3, y4, y5, and y6 It can be a value in 392, 408, 424, 456, 472, 504, 536, 584, 600, 616, 680, 712, 776, 808, 872.
  • the terminal device can determine the maximum TBS set by using two different rules:
  • the network device may determine m values according to arg min
  • the network device may determine, according to the selection rule, that the maximum TBS set includes 328, 424, 536, 616, 712, 808, 904, and 1000 in the CE Mode B mode.
  • the maximum TBS set includes 328, 408, 504, 584, 680, 776, 872, and 936 to determine the corresponding maximum TBS set in two different CE modes, as shown in Table 3:
  • the network device can be based on arg min(K-(TBSmin+(TBSMax-TBSmin)/(N+1)*m)), and (K-(TBSmin+(TBSMax-TBSmin)/(N+ 1) *m))>0 determines N values, where K represents any value in the PUSCH TBS set in the coverage enhancement mode, TBSmin represents the minimum TBS in the TBS set of the PSUCH in the coverage enhancement mode, and TBSMax represents the coverage enhancement The maximum TBS in the TBS set of the PSUCH in the mode, and N is an integer greater than or equal to 1.
  • the network device may determine, according to the determining rule, that the maximum TBS set includes 328, 424, 536, 616, 712, 808, 904, and 1000 in CE Mode A mode, in CE Mode B mode.
  • the maximum TBS set includes 328, 424, 504, 600, 680, 776, 872, and 936 to determine the corresponding maximum TBS set in two different CE modes, as shown in Table 4:
  • the embodiment of the present application only uses the above two selection rules as an example for description.
  • the maximum TBS set may be non-uniformly selected and determined. Further restrictions.
  • the terminal device may acquire the first TBS set according to the number of candidate TBSs indicated by the second indication information and the second TBS set.
  • the first TBS set may include N TBSs in the second TBS set that are less than or equal to the TBS threshold indicated by the first indication information and that have the smallest difference from the TBS threshold indicated by the first indication information, where N is the candidate TBS. Quantity.
  • the coverage enhancement mode of the terminal device is CE Mode A
  • the second TBS set includes 328, 424, 536, 616, 712, 808, 904, and 1000 as an example, if the second indication information indicates the candidate TBS
  • the number N is four, and it is determined that the first TBS set includes a TBS threshold of 1000, and three TBSs having the smallest difference from the TBS threshold, namely, 904, 808, and 712.
  • the first TBS set may also include N TBSs in the second TBS set, where the N TBSs include a minimum TBS and a maximum TBS in the second TBS set, N is the number of candidate TBSs, and N TBSs are in the second TBS set.
  • the average distribution is satisfied.
  • the "average distribution" is an approximately even distribution.
  • the average distribution of the original concepts for example, 8 integers between 1 and 10, the 8 integers are 2, 3, 4, 5, 6, 7, 8, and 9. That is, the nature of the arithmetic progression is satisfied.
  • the approximate average distribution for example, three integers between 1 and 10, the three integers are 3, 5 (or 6), 8.
  • the coverage enhancement mode of the terminal device is CE Mode A
  • the second TBS set includes 328, 424, 536, 616, 712, 808, 904, and 1000 as an example. If the number of candidate TBSs indicated by the second indication information is N, For four, it is determined that the first TBS set includes a TBS threshold 1000, a minimum TBS 328, and two TBSs evenly distributed between 328 and 1000. For example, when determining two TBSs that are evenly distributed between 328 and 1000, reference may be made to the above two determination rules, and details are not described herein again.
  • the network device sends a message 2 to the terminal device.
  • the message content included in the message 2 may be combined with the description in S202. If the second indication information in S202 is carried in the system message, the message 2 in the step uses the message 2 in the current technology, that is, does not do If the second indication information in S201 is carried in the message 2, the MAC sub-header of the message 2 in the step may include the second indication information; or the RAR of the message 2 may include the second indication information; or, the message The uplink grant UL grant of 2 may include the second indication information. For details about how to carry the bearer, refer to the description in the foregoing S502.
  • the terminal device selects, in the first TBS set, a target TBS for transmitting the first data.
  • the target TBS is a minimum TBS of the TBS in the first TBS set that is greater than or equal to the TBS required by the first data, and the target TBS is less than or equal to the TBS threshold indicated by the first indication information.
  • the first data is message 3 including user plane data.
  • the target TBS for transmitting the first data may be selected in the first TBS set, and then the first data is transmitted according to the target TBS. For example, if the first TBS set includes 712, 808, 904, and 1000, if the TBS required for the first data to be transmitted is 750, in order to reduce resource waste and improve resource utilization, the first TBS set may be greater than 750. And the TBS with the smallest difference from 750 is determined as the target TBS, that is, the target TBS is 808.
  • the first data may be sent to the network device according to the target TBS. For example, when the first data is sent to the network device according to the target TBS, if the TBS required by the first data is equal to the target TBS, the first data is directly sent to the network device according to the target TBS; if the TBS required for the first data is smaller than
  • the target TBS needs to be additionally padded with "0" after the first data until the TBS of the padded data is equal to the target TBS, and then the first data is sent to the network device according to the target TBS (the first data at this time) Is the padding bit).
  • the first data requires a TBS of 750 and the target TBS is 808.
  • the terminal device needs to additionally fill the 58bite “0” after the first data until the filling.
  • the TBS required for the subsequent data is equal to the target TBS 808, after which the first data is transmitted according to the target TBS.
  • the data transmission method provided by the embodiment of the present application is configured to receive the first indication information and the second indication information that are sent by the network device, where the second indication information is used to indicate the number of candidate TBSs, so that the terminal device can obtain the second indication information according to the second indication information.
  • the first TBS set selects a target TBS for transmitting the first data in the first TBS set, and then sends the first data to the network device according to the target TBS. It can be seen that, when the first data is sent, the data is not directly transmitted according to the TBS threshold broadcasted by the network device, as in the prior art, but the first TBS set is first obtained through the second indication information, and is in the first TBS.
  • the minimum TBS of the TBS required to be greater than or equal to the first data is selected as the target TBS in the set. Since the target TBS is greater than or equal to the TBS required for the first data, the first data is not affected by the first TBS according to the target TBS.
  • the terminal device When the terminal device adopts the foregoing second possible implementation manner, that is, the terminal device acquires the first TBS set according to the fourth indication information, the corresponding data transmission method is shown in FIG. 7 , and FIG. 7 is provided in the embodiment of the present application.
  • Another schematic diagram of a data transmission method the data transmission method may include:
  • the network device sends the first indication information to the terminal device.
  • the first indication information is used to indicate a transport block size TBS threshold.
  • the terminal device may receive the first indication information by using the system message, where the receiving process is specifically: the network device may broadcast the system message, where the system message includes the first indication information, so that the terminal device The first indication information can be received through a system message.
  • the network device sends fourth indication information to the terminal device.
  • the fourth indication information is used to indicate the first TBS set.
  • the indication may be performed by one of the following three possible indication manners, specifically:
  • the first mode and the fourth indication information include the first TBS set, so that the terminal device can directly acquire the first TBS set according to the fourth indication information.
  • the first TBS set contains values of an integer number of TBSs, for example, the first TBS set is ⁇ A, B, C, D ⁇ , where A, B, C, D are the values of the TBS.
  • the network device may send a system message to the terminal device, where the system message includes fourth indication information, that is, the fourth indication information may carry the system. The message is sent to the terminal device.
  • the fourth indication information includes a first TBS set index, where the first TBS set index corresponds to the first TBS set.
  • the network device may send a system message to the terminal device, where the system message includes fourth indication information, that is, the fourth indication information may be carried. Sending to the terminal device in the system message; or, the network device may send the message 2 to the terminal device, and the MAC sub-header included in the message 2 may include the fourth indication information, so that the fourth indication information is sent to the terminal device by using the MAC sub-header; Alternatively, the random access response RAR included in the message 2 may include fourth indication information, so that the fourth indication information is sent to the terminal device by using the RAR; or the uplink grant UL Grant included in the message 2 includes the fourth indication information, thereby The fourth indication information is sent to the terminal device by using the UL Grant.
  • the specific bearer mode is described in the foregoing description in S202. The embodiment will not be described again.
  • the fourth indication information includes an index of an element in the second TBS set.
  • the index of the element in the second TBS set is used to enable the terminal device to acquire the first TBS set, where the first TBS set includes an element corresponding to the index included in the fourth indication information in the second TBS set.
  • the network device may send a system message to the terminal device, where the system message includes fourth indication information, that is, the fourth indication.
  • the information may be carried in the system message and sent to the terminal device; of course, the network device may send the message 2 to the terminal device, and the uplink grant UL Grant included in the message 2 includes the fourth indication information, that is, the fourth indication information may be carried in the uplink.
  • the device sends the fourth indication information to the terminal device by using the system message or the uplink granting the UL Grant.
  • the specific bearer mode refer to the related description in the foregoing S202. No more details are given.
  • the terminal device acquires the first TBS set according to the fourth indication information.
  • the fourth indication information includes a plurality of different indication manners, and correspondingly, the terminal device may obtain the first TBS set by using different acquisition manners.
  • the terminal device may directly acquire the first TBS set according to the fourth indication information including the first TBS set. For example, if the first TBS set that the terminal device can use includes 712, 808, 904, and 1000, the network device directly sends the first TBS set including 712, 808, 904, and 1000 to the terminal device by using a system message, so that the terminal device The first TBS set may be obtained directly according to the fourth indication information carried in the system message.
  • the terminal device may pre-store a plurality of available candidate TBS sets, each of which has its own corresponding TBS set.
  • the TBS set index the network device may send the fourth indication information including the first TBS set index to the terminal device, so that the terminal device may determine the first TBS set according to the first TBS set index included in the fourth indication information. For example, if the terminal device stores four candidate TBS sets in advance, the first candidate TBS set includes 328, 472, 680, and 1000, the TBS set index corresponding to the first candidate TBS set is 1; and the second candidate TBS set includes 328.
  • the TBS set index corresponding to the second candidate TBS set is 2;
  • the third candidate TBS set includes 328, 488, 744, and 1000, and the TBS index set corresponding to the third candidate TBS set is 3;
  • the candidate TBS set includes 712, 808, 904, and 1000, and the TBS set index corresponding to the fourth candidate TBS set is 4;
  • the network device may send the fourth indication information including the first TBS set index 4 to the terminal device, so that the terminal device After receiving the fourth indication information, the first TBS set may be determined as the fourth candidate TBS set including 712, 808, 904, and 1000 according to the first TBS set index 4 included in the fourth indication information, thereby acquiring the first TBS collection.
  • the fourth indication information includes an index of an element in the second TBS set
  • the first TBS set since the first TBS set includes an element corresponding to an index included in the fourth indication information in the second TBS set, before determining the first TBS set, it is required Obtaining a second TBS set, optionally, in the embodiment of the present application, when acquiring the second TBS set, the second TBS set is specified by a communication protocol; or receiving configuration information from the network device, and acquiring according to the configuration information.
  • the configuration information is used to indicate the second TBS set. For the acquisition method and the acquisition process of the second TBS, refer to the related description in the above S202.
  • the embodiment of the present application no longer performs an index.
  • the first TBS set may be determined according to the index included in the second TBS set and the fourth indication information. For example, as shown in Table 3 above, if the second TBS set includes the CE Mode A mode, the index 1 corresponds to 328, the index 2 corresponds to 424, the index 3 corresponds to 536, the index 4 corresponds to 616, and the index 5 corresponds to the index. 712, index 808 corresponding to index 6, index 904 corresponding to index 7, and index 8 corresponding to 1000, and the fourth indication information includes indexes 5, 6, 7, and 8, according to the index 5, 6, 7, and 8 and The two TBS sets determine that the first TBS set includes 712, 808, 904, and 1000 to obtain the first TBS set.
  • the random access code indicating the EDT is sent to the network device.
  • the network device sends a message 2 to the terminal device.
  • the message content included in the message 2 may be combined with the description in S702.
  • the message 2 in the step uses the message 2 in the prior art;
  • the fourth indication information in the message is carried in the message 2, the MAC sub-header of the message 2 in the step may include the fourth indication information; or the RAR of the message 2 may include the fourth indication information; or, in the step
  • the message 2 uplink grant UL Grant may include the second indication information, and the specific description of how to carry the bearer may be referred to in the foregoing description in S202.
  • the terminal device selects, in the first TBS set, a target TBS for transmitting the first data.
  • the target TBS is a minimum TBS of the TBS in the first TBS set that is greater than or equal to the TBS required by the first data, and the target TBS is less than or equal to the TBS threshold indicated by the first indication information.
  • the target TBS set for transmitting the first data may be selected in the first TBS set, and then the first data is transmitted according to the target TBS set. For example, if the first TBS set includes 712, 808, 904, and 1000, if the TBS required for the first data to be transmitted is 750, in order to reduce resource waste and improve resource utilization, the first TBS set may be greater than 750. And the TBS with the smallest difference from 750 is determined as the target TBS, that is, the target TBS is 808.
  • the first data may be sent to the network device according to the target TBS. For example, when the first data is sent to the network device according to the target TBS, if the TBS required by the first data is equal to the target TBS, the first data is directly sent to the network device according to the target TBS; if the TBS required for the first data is smaller than
  • the target TBS needs to additionally add "0" to the first data until the TBS of the first data after the filling is equal to the target TBS, and then send the first data to the network device according to the target TBS.
  • the first data requires a TBS of 750 and the target TBS is 808.
  • the terminal device needs to additionally add 58 bite “0” to the first data until the padding is performed.
  • the required first data is equal to the target TBS 808, and then the first data is transmitted according to the target TBS.
  • the data transmission method provided by the embodiment of the present application is configured to receive the first indication information and the fourth indication information that are sent by the network device, where the fourth indication information is used to indicate the first TBS set, so that the terminal device can obtain according to the fourth indication information.
  • the first TBS set selects a target TBS for transmitting the first data in the first TBS set, and then sends the first data to the network device according to the target TBS. It can be seen that, when the first data is sent, the data is not directly transmitted according to the TBS threshold broadcasted by the network device, as in the prior art, but the first TBS set is first obtained through the fourth indication information, and is in the first TBS.
  • the minimum TBS of the TBS required to be greater than or equal to the first data is selected as the target TBS in the set. Since the target TBS is greater than or equal to the TBS required for the first data, the first data is not affected by the first TBS according to the target TBS. The transmission of data, and since the target TBS is greater than or equal to the minimum TBS of the TBS required for the first data, this requires an additional "0" of less bits, which results in less waste of resources, thereby improving resource utilization. .
  • FIG. 8 is a schematic structural diagram of a communication device 80 according to an embodiment of the present application.
  • the communication device 80 may include a processor 801, and the processor 801 is configured to be coupled to the memory 802 to read and execute the memory.
  • the communication device 80 may further include: a memory 802.
  • the communication device 80 shown in the embodiment of the present application may perform the technical solution of the data transmission method shown in any of the foregoing embodiments.
  • the implementation principle and the beneficial effects are similar, and details are not described herein.
  • FIG. 9 is a schematic structural diagram of a network device 90 according to an embodiment of the present disclosure.
  • the network device 90 may include a processor 901, where the processor 901 is configured to be coupled with the memory 902 to read and execute the memory.
  • the network device 90 can include: a memory 902.
  • the network device 90 shown in the embodiment of the present application may perform the technical solution of the data transmission method shown in any of the foregoing embodiments.
  • the implementation principle and the beneficial effects are similar, and details are not described herein.
  • the embodiment of the present application further provides a computer storage medium, including instructions, when the instruction is run on the communication device, causing the communication device to perform the data transmission method as shown in any one of the foregoing first aspects, the implementation principle and the beneficial effects thereof. Similar, it will not be repeated here.
  • the embodiment of the present application further provides a computer storage medium, including instructions, when the instruction is run on a network device, causing the network device to perform the data transmission method as shown in any one of the foregoing second aspects, the implementation principle and the beneficial effects thereof. Similar, it will not be repeated here.
  • the embodiment of the present application further provides a chip, where a computer program is stored on the chip, and when the computer program is executed by the processor, the data transmission method shown in any of the foregoing embodiments is executed, and the implementation principle and the beneficial effects are similar. Repeatedly.
  • the embodiment of the present application further provides a communication system, which includes the communication device shown in any of the foregoing embodiments and the network device shown in any of the foregoing embodiments, and the implementation principle and the beneficial effects are similar. Narration.
  • the processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). Or other 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 disclosed apparatus and method 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 application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

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Abstract

一种数据传输方法、通信设备及网络设备，方法包括：接收第一指示信息，第一指示信息用于指示传输块大小TBS门限；从网络设备接收第二指示信息，第二指示信息用于指示候选TBS的数量N；获取第一TBS集合，第一TBS集合中元素的数量等于候选TBS的数量N，第一TBS集合中的最大TBS小于或者等于第一指示信息指示的TBS门限；在第一TBS集合中选择用于传输第一数据的目标TBS；其中，目标TBS为第一TBS集合中大于或等于第一数据所需TBS的最小TBS；根据目标TBS向网络设备发送第一数据，从而在数据提前传输过程中，提高了资源的利用效率。

Description

数据传输方法、通信设备及网络设备 技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法、通信设备及网络设备。
背景技术
对于长期演进机器类型通信(Long Term Evolution Machine Type Communication，LTE MTC)或窄带物联网(Narrow Band Internet of Things，NB-IoT)(以下以MTC为例说明)而言，其数据传输的特点是数据量较小，且数据传输呈现周期性。
为了实现数据量较小的数据的传输，通常采用数据提前传输(Early Data transmission,EDT)的方法。现有技术中，在进行数据提前传输时，基站会广播系统消息，该系统消息中包括TBS门限，当终端设备接收到该系统消息，且确定待发送的上行数据的数据量小于或等于该TBS门限时，向基站发送指示EDT的消息，以使基站为终端设备分配用于传输上行数据的资源。但是该方法的资源的利用效率可能会较低。
发明内容
本申请提供一种数据传输方法、通信设备及网络设备，以实现在数据提前传输过程中，提高资源的利用效率。
第一方面，本申请实施例提供一种数据传输方法，该方法可以包括：
接收第一指示信息，第一指示信息用于指示传输块大小TBS门限；
从网络设备接收第二指示信息，第二指示信息用于指示候选TBS的数量N；
获取第一TBS集合，第一TBS集合中元素的数量等于候选TBS的数量N，第一TBS集合中的最大TBS小于或者等于第一指示信息指示的TBS门限；
在第一TBS集合中选择用于传输第一数据的目标TBS；其中，目标TBS为第一TBS集合中大于或等于第一数据所需TBS的最小TBS；
根据目标TBS向网络设备发送第一数据。
由此可见，在发送第一数据时，并不像现有技术中那样，直接根据网络设备广播的TBS门限传输数据，而是先通过第二指示信息获取第一TBS集合，并在第一TBS集合中选择一个大于或等于第一数据所需TBS的最小TBS作为目标TBS，由于该目标TBS大于或等于第一数据所需TBS，因此，根据该目标TBS传输第一数据时不会影响第一数据的传输，且由于该目标TBS是大于或等于第一数据所需TBS的最小TBS，这样需要额外填充较少比特的“0”，使得资源的浪费较少，从而提高了资源的利用率。
在一种可能的实现方式中，第一TBS集合为第二TBS集合的子集，第一TBS集合包括第二TBS集合中小于或者等于第一指示信息指示的TBS门限且与第一指示信息指示的TBS门限的差值最小的N个TBS，N为候选TBS的数量。
在一种可能的实现方式中，第一TBS集合为第二TBS集合的子集，第一TBS集合包括第二TBS集合中的N个TBS，N个TBS包括第二TBS集合中的最小TBS和最大TBS，N等于候选TBS的数量，N个TBS在第二TBS集合中满足平均分布。
在一种可能的实现方式中，该方法还可以包括：
从网络设备接收第三指示信息，第三指示信息用于指示增强覆盖等级，增强覆盖等级与候选TBS的数量关联。
在一种可能的实现方式中，第二TBS集合是通信协议规定的；或者，
从网络设备接收配置信息，配置信息用于指示第二TBS集合。
在一种可能的实现方式中，第二TBS集合为覆盖增强模式下的TBS集合，其中，覆盖增强模式为CE Mode A模式或CE Mode B模式；
若覆盖增强模式为CE Mode A模式，第二TBS集合包括328、376、392、408、424、440、456、472、488、504、536、552、584、600、616、680、712、744、776、808、840、872、904、936及1000；或者，若覆盖增强模式为CE Mode A模式，第二TBS集合包括328、424、536、616、712、808、904及1000；或者；
若覆盖增强模式为CE Mode B模式，第二TBS集合包括328、392、408、424、456、472、504、536、584、600、616、680、712、776、808、872及936；或者，若覆盖增强模式为CE Mode B模式，第二TBS集合包括328、408、504、584、680、776、872及936。
在一种可能的实现方式中，从网络设备接收第二指示信息可以包括：
从网络设备接收系统消息，系统消息包括第二指示信息。
在一种可能的实现方式中，从网络设备接收第二指示信息可以包括：
从网络设备接收消息2，消息2包括第二指示信息。
在一种可能的实现方式中，消息2包括的MAC子头包括第二指示信息；或者，
消息2包括的随机接入响应RAR包括第二指示信息；或者，
消息2包括的上行授权UL Grant包括第二指示信息。
在一种可能的实现方式中，第一数据为包括用户面数据的消息3。
在一种可能的实现方式中，方法用于随机接入过程。
第二方面，本申请实施例提供一种数据传输方法，该方法可以包括：
发送第一指示信息，第一指示信息用于指示传输块大小TBS门限；
向终端设备发送第二指示信息，第二指示信息用于指示候选TBS的数量N；候选TBS的数量为第一TBS集合中元素的数量，第一TBS集合中的最大TBS小于或者等于第一指示信息指示的TBS门限；
从终端设备接收第一数据；第一数据是终端设备根据目标TBS发送的，目标TBS为第一TBS集合中大于或等于第一数据所需TBS的最小TBS。
在一种可能的实现方式中，第一TBS集合为第二TBS集合的子集，第一TBS集合包括第二TBS集合中小于或者等于第一指示信息指示的TBS门限且与第一指示信息指示的TBS门限的差值最小的N个TBS，N为候选TBS的数量。
在一种可能的实现方式中，第一TBS集合为第二TBS集合的子集，第一TBS集合包括第二TBS集合中的N个TBS，N个TBS包括第二TBS集合中的最小TBS和最大TBS， N为候选TBS的数量，N个TBS在第二TBS集合中满足平均分布。
在一种可能的实现方式中，该方法还可以包括：
向终端设备发送第三指示信息，第三指示信息用于指示增强覆盖等级，增强覆盖等级与候选TBS的数量关联。
在一种可能的实现方式中，第二TBS集合是通信协议规定的；或者，
向终端设备发送配置信息，配置信息用于指示第二TBS集合。
在一种可能的实现方式中，第二TBS集合为覆盖增强模式下的TBS集合，其中，覆盖增强模式为CE Mode A模式或CE Mode B模式；
若覆盖增强模式为CE Mode A模式，第二TBS集合包括328、376、392、408、424、440、456、472、488、504、536、552、584、600、616、680、712、744、776、808、840、872、904、936及1000；或者，若覆盖增强模式为CE Mode A模式，第二TBS集合包括328、424、536、616、712、808、904及1000；或者，
若覆盖增强模式为CE Mode B模式，第二TBS集合包括328、392、408、424、456、472、504、536、584、600、616、680、712、776、808、872及936；或者，若覆盖增强模式为CE Mode B模式，第二TBS集合包括328、408、504、584、680、776、872及936。
在一种可能的实现方式中，向终端设备发送第二指示信息可以包括：
向终端设备发送系统消息，系统消息包括第二指示信息。
在一种可能的实现方式中，向终端设备发送第二指示信息可以包括：
向终端设备发送消息2，消息2包括第二指示信息。
在一种可能的实现方式中，消息2包括的MAC子头包括第二指示信息；或者，
消息2包括的随机接入响应RAR包括第二指示信息；或者，
消息2包括的上行授权UL Grant包括第二指示信息。
在一种可能的实现方式中，第一数据为包括用户面数据的消息3。
在一种可能的实现方式中，方法用于随机接入过程。
第三方面，本申请实施例提供一种通信设备，包括处理器，处理器用于与存储器耦合，读取并执行存储器中的指令，以实现如上述第一方面中任一项所示的方法。
在一种可能的实现方式中，该通信设备还可以包括：存储器。
第四方面，本申请实施例提供一种网络设备，包括处理器，处理器用于与存储器耦合，读取并执行存储器中的指令，以实现如上述第二方面中任一项所示的方法。
在一种可能的实现方式中，该网络设备还可以包括：存储器。
第五方面，本申请实施例提供一种计算机存储介质，包括指令，其特征在于，当指令在通信设备上运行时，使得通信设备执行如上述第一方面中任一项所示的方法。
第六方面，本申请实施例提供一种计算机存储介质，包括指令，其特征在于，当指令在网络设备上运行时，使得网络设备执行如上述第二方面中任一项所示的方法。
本申请实施例提供的数据传输方法、通信设备及网络设备，通过接收网络设备发送的第一指示信息和第二指示信息，其中，第二指示信息用于指示候选TBS的数量，使得终端设备可以根据第二指示信息获取第一TBS集合，在第一TBS集合中选择用于传输第一数据的目标TBS，之后，再根据目标TBS向网络设备发送第一数据。由此可见，在发送第一 数据时，并不像现有技术中那样，直接根据网络设备广播的TBS门限传输数据，而是先通过第二指示信息获取第一TBS集合，并在第一TBS集合中选择一个大于或等于第一数据所需TBS的最小TBS作为目标TBS，由于该目标TBS大于或等于第一数据所需TBS，因此，根据该目标TBS传输第一数据时不会影响第一数据的传输，且由于该目标TBS是大于或等于第一数据所需TBS的最小TBS，这样需要额外填充较少比特的“0”，使得资源的浪费较少，从而提高了资源的利用率。
附图说明
图1为本申请实施例提供的一种应用场景示意图；
图2为本申请实施例提供的一种数据传输方法的示意图；
图3为本申请实施例提供的一种消息2的结构示意图；
图4为本申请实施例提供的一种E/T/R/R/BI MAC subheader的结构示意图；
图5为本申请实施例提供的一种MAC RAR的结构示意图；
图6为本申请实施例提供的另一种MAC RAR的结构示意图；
图7为本申请实施例提供的另一种数据传输方法的示意图；
图8为本申请实施例提供的一种通信设备的结构示意图；
图9为本申请实施例提供的一种网络设备的结构示意图。
具体实施方式
本申请实施例可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统，码分多址(Code Division Multiple Access，CDMA)系统，宽带码分多址(Wideband Code Division Multiple Access Wireless，WCDMA)系统，通用分组无线业务(General Packet Radio Service，GPRS)，长期演进(Long Term Evolution，LTE)，5G通信系统或未来可能出现的其他系统，以下对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。需要说明的是，当本申请实施例的方案应用于5G系统或未来可能出现的其他系统时，网络设备和终端的名称可能发生变化，但这并不影响本申请实施例方案的实施。
图1为本申请实施例提供的一种应用场景示意图，该通信系统可以应用于MTC或NB-IoT中，该通信系统可以包括网络设备和至少一个终端设备，请参见图1所示，以通信系统应用于MTC，且包括网络设备、第一终端设备及第二终端设备为例，当第一终端设备和第二终端设备采用数据提前传输(Early Data transmission,EDT)的方式向网络设备上传数据时，网络设备可以先通过系统消息向第一终端设备和第二终端设备广播系统消息，该系统消息中包括用于指示终端设备可使用EDT的TBS的最大门限值，第一终端设备和第二终端设备在接收到该系统消息之后，若确定各自待发送的上行数据的数据量小于或等于该TBS门限时，则第一终端设备和第二终端设备需要在数据量小于该TBS门限时额外填充“0”，以使其发送的数据所占的TBS为最大TBS门限值，然而，这样会使得部分资源没有用于传输有效的用户数据，资源的利用效率较低。
其中，1)终端设备，又称为终端、用户设备，是一种向用户提供语音和/或数据连通 性的设备，例如，具有无线连接功能的手持式设备、车载设备等。常见的终端设备例如包括：手机、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，其中，可穿戴设备例如包括：智能手表、智能手环、计步器等。
2)网络设备，又称为无线接入网(Radio Access Network，RAN)设备是一种将终端设备接入到无线网络的设备，其包括各种通信制式中的网络设备，例如包括但不限于：基站、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、网络设备控制器(Base Station Controller，BSC)、网络设备收发台(Base Transceiver Station,BTS)、家庭网络设备(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)等。
其中，网络设备，包括了各类频率制式的网络设备，例如包括但不限于：低频网络设备、高频网络设备。
3)“多个”是指两个或两个以上，其它量词与之类似。“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这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
为了解决现有技术在数据提前传输过程中，存在的资源的利用效率较低的问题，本申请实施例提供了一种数据传输方法，该方法可以应用于随机接入过程，使得终端设备在传输第一数据之前，先接收第一指示信息，第一指示信息用于指示传输块大小TBS门限；并获取第一TBS集合，在第一TBS集合中选择用于传输第一数据的目标TBS；其中，目标TBS为大于或等于第一数据所需TBS的最小TBS；之后，再根据目标TBS向网络设备发送第一数据。由此可见，本申请实施例提供的数据传输方法，在发送第一数据时，并不像现有技术中那样，直接根据网络设备广播的TBS门限传输数据，而是在第一TBS集合中选择一个大于或等于第一数据所需TBS的最小TBS作为目标TBS，由于该目标TBS大于或等于第一数据所需TBS，因此，根据该目标TBS传输第一数据时不会影响第一数据的传输，且由于该目标TBS是大于或等于第一数据所需TBS的最小TBS，这样需要额外填充较少比特的“0”，使得资源的浪费较少，从而提高了资源的利用率。
需要说明的是，在本申请实施例所示的数据传输方法中，终端设备获取第一TBS集合可以通过至少三种可能的方式实现，具体如下：
在第一种可能的实现方式中，网络设备可以向终端设备发送第二指示信息，以使终端设备从网络设备接收该第二指示信息，并根据候选TBS的数量确定TBS集合；其中，该第二指示信息用于指示候选TBS的数量。在通过第二指示信息指示候选TBS的数量时，可选的，网络设备还可以向终端设备发送第三指示信息，第三指示信息用于指示增强覆盖等级，且增强覆盖等级与候选TBS的数量关联，即不同增强覆盖等级可以对应不同的候选TBS的数量。
在第二种可能的实现方式中，网络设备可以向终端设备发送第四指示信息，以使终端设备从网络设备接收第四指示信息；第四指示信息用于指示第一TBS集合，第一TBS集合包含整数个TBS的值，从而使得终端设备可以直接根据第四指示信息确定第一TBS集合。
需要说明的是，终端设备在获取第一TBS集合时，本申请实施例只是以上述两种可能的实现方式为例进行说明，但并不代表本申请仅局限于此。下面，将结合终端设备获取第 一TBS集合的上述两种可能的实现方式，详细描述本申请实施例提供的数据传输方法。
当终端设备采用上述第一种可能的实现方式，即终端设备根据第二指示信息获取第一TBS集合时，其相应的数据传输方法请参见图2所示，图2为本申请实施例提供的一种数据传输方法的示意图，该数据传输方法可以包括：
S201、网络设备向终端设备发送第一指示信息。
其中，第一指示信息用于指示传输块大小TBS门限。
示例的，终端设备接收第一指示信息时，可以通过系统消息接收第一指示信息，该接收过程具体为：网络设备可以广播该系统消息，该系统消息中包括该第一指示信息，使得终端设备可以通过系统消息接收该第一指示信息。
S202、网络设备向终端设备发送第二指示信息。
其中，第二指示信息用于指示候选TBS的数量。
在本申请实施例中，通过向终端设备发送第二指示信息，其目的在于：可以使得终端设备根据第二指示信息指示的候选TBS的数量确定第一TBS集合，从而在该TBS集合中选择用于传输第一数据的目标TBS。
可选的，在通过第二指示信息指示候选TBS的数量时，可选的，网络设备还可以向终端设备发送第三指示信息，第三指示信息用于指示增强覆盖等级，且增强覆盖等级与候选TBS的数量关联，换言之，在确定候选TBS的数量时，需要先确定增强覆盖等级，以根据增强覆盖等级和候选TBS的数量之间的关系确定候选TBS数量。
需要说明的是，网络设备向终端设备发送第二指示信息时，可以通过至少两种可能的方式向终端设备发送第二指示信息，具体为：
方式1、网络设备可以向终端设备发送系统消息，系统消息包括第二指示信息，即该第二指示信息可以在系统消息中发送给终端设备。当系统消息承载第二指示信息时，可以通过如下形式实现：
SystemInformation::＝SEQUENCE{
numTBS INTEGER(1，…，4)
}
其中，numTBS指示候选TBS的数量。示例的，候选TBS的数量可以为1个，2个，3个，4个。
可选的，当该候选TBS的数量在不同增强覆盖等级下有区别时，网络设备还可以向终端设备发送第三指示信息，第三指示信息用于指示增强覆盖等级，且增强覆盖等级与候选TBS的数量关联，即不同的增强覆盖等级下对应的相同或不同的候选TBS的数量。需要说明的是，该第三指示信息也可以在系统消息中发送给终端设备。当系统消息承载第二指示信息和第三指示信息时，可以通过如下形式实现：
SystemInformation::＝SEQUENCE{
numTBSList SEQUENCE(SIZE(1，…，maxCE-level))OF numTBS
}
numTBS::＝INTEGER(1，…，4)
其中，numTBSList指示不同增强覆盖等级下候选TBS的数量的列表，maxCE-level为最大的增强覆盖等级，例如max-CE-level为4，则分1、2、3、4四个增强覆盖等级，其 中每个覆盖等级对应一个numTBS，即候选TBS的数量。例如增强覆盖等级1下候选TBS的数量为2，增强覆盖等级2下候选TBS的数量为4，增强覆盖等级3下候选TBS的数量为2，增强覆盖等级4下候选TBS的数量为4。
需要说明的是，当网络设备通过系统消息向终端设备发送第二指示信息时，该第二指示信息和第一指示信息可以同时承载在系统消息中发送给终端设备；或者，当该候选TBS的数量为增强覆盖等级下对应的TBS的数量时，第一指示信息、第二指示信息及第三指示信息均可以同时承载在系统消息中发送给终端设备。
方式2：网络设备可以向终端设备发送消息2，该消息2中包括第二指示信息，即第二指示信息可以承载在消息2中发送给终端设备，该消息2为随机接入过程中包含RAR的第二条消息。
需要说明的是，当网络设备向终端设备发送消息2时，可选的，消息2包括的MAC子头可以包括第二指示信息，从而通过MAC子头将第二指示信息发送给终端设备；或者，消息2包括的随机接入响应RAR可以包括第二指示信息，从而通过RAR将第二指示信息发送给终端设备；或者，消息2包括的上行授权UL Grant可以包括第二指示信息，从而通过UL Grant将第二指示信息发送给终端设备。
示例的，请参见图3所示，图3为本申请实施例提供的一种消息2的结构示意图，该消息2可以包括MAC头(MAC header)，一个或多个MAC RAR及Padding(可选的)，其中，MAC头可以包括一个或多个MAC子头(subheader)，第二指示信息可以承载在第一个子头，即承载在E/T/R/R/BI MAC subheader中，具体可以通过E/T/R/R/BI MAC subheader中的两个保留比特R进行承载，请参见图4所示，图4为本申请实施例提供的一种E/T/R/R/BI MAC subheader的结构示意图，在通过两个保留比特R承载第二指示信息时，通过Preamble向网络设备指示EDT的终端设备需要读取这两个保留比特R，例如，当两个保留比特R中为00时，表示第二指示信息指示的候选TBS的数量为1个，当两个保留比特R为01时，表示第二指示信息指示的候选TBS的数量为2个，当两个保留比特R为10时，表示第二指示信息指示的候选TBS的数量为3个，当两个保留比特R为11时，表示第二指示信息指示的候选TBS的数量为4个，从而通过消息2包括的MAC子头承载第二指示信息，并将第二指示信息发送给终端设备。以上保留比特R的使用只是示例性的，使用两个保留比特指示1、2、3、4的方法都包含在本发明中。或者，使用其中一个保留比特R来指示两个数，例如“0”指示2，“1”指示4，使用一个保留比特R指示1、2、3、4中的任意两个数的方法都包含在本发明中。
当第二指示信息承载在消息2中的MAC RAR消息中时，请参见图5所示，图5为本申请实施例提供的一种MAC RAR的结构示意图，在通过MAC RAR中的一个保留比特R承载第二指示信息时，当该保留比特R为0时，表示第二指示信息指示的候选TBS的数量为2个，当该保留比特R为1时，表示第二指示信息指示的候选TBS的数量为4个，从而通过消息2包括的RAR承载第二指示信息，并将第二指示信息发送给终端设备。使用该保留比特R指示1、2、3、4中的任意两个数的方法都包含在本发明中。此外，需要说明的是，当该数据传输方法应用于NB-IoT中时，其对应的MAC RAR的结构请参见图6所示，图6为本申请实施例提供的另一种MAC RAR的结构示意图，在通过两个保留比特R承载第二指示信息时，由于该场景中的MAC RAR中包括6个保留比特R，则在该6 个保留比特中任意选择两个保留比特承载第二指示信息时，同样的，当两个保留比特R为00时，表示第二指示信息指示的候选TBS的数量为1个，当两个保留比特R为01时，表示第二指示信息指示的候选TBS的数量为2个，当两个保留比特R为10时，表示第二指示信息指示的候选TBS的数量为3个，当两个保留比特R为11时，表示第二指示信息指示的候选TBS的数量为4个，从而通过消息2包括的MAC RAR承载第二指示信息，并将第二指示信息发送给终端设备。以上保留比特R的使用只是示例性的，使用两个保留比特指示1、2、3、4的方法都包含在本发明中。或者，使用其中一个保留比特R来指示两个数，例如“0”指示2，“1”指示4，使用一个保留比特R指示1、2、3、4中的任意两个数的方法都包含在本发明中。
当第二指示信息承载在消息2中的上行授权UL Grant中时，请参见下述表1所示，在通过上行授权UL Grant承载第二指示信息时，当终端设备的覆盖增强模式为Mode A模式时，第二指示信息可以承载在上行授权UL Grant中的用于指示MCS索引的比特中，可以在指示MCS索引的三个比特中选择两个比特承载该第二指示信息；当终端设备的覆盖增强模式为Mode B模式时，第二指示信息可以承载在上行授权UL Grant中的用于指示TBS索引的两个比特中，以通过该两个比特承载该第二指示信息。同样的，当两个比特为00时，表示第二指示信息指示的候选TBS的数量为1个，当两个比特为01时，表示第二指示信息指示的候选TBS的数量为2个，当两个比特为10时，表示第二指示信息指示的候选TBS的数量为3个，当两个比特为11时，表示第二指示信息指示的候选TBS的数量为4个，从而通过消息2包括的上行授权UL Grant承载第二指示信息，并将第二指示信息发送给终端设备。以上比特的使用只是示例性的，使用两个比特指示1、2、3、4的方法都包含在本发明中。或者，使用其中一个比特R来指示两个数，例如“0”指示2，“1”指示4，使用一个保留比特R指示1、2、3、4中的任意两个数的方法都包含在本发明中。
表1
Figure PCTCN2018081965-appb-000001
网络设备通过S202将第一指示信息发送给终端设备之后，终端设备就可以执行下述S203：
S203、终端设备根据第二指示信息获取第一TBS集合。
其中，第一TBS集合为终端设备可使用的候选TBS组成的集合。可选的，该第一TBS集合可以为第二TBS集合的子集，第一TBS集合中元素的数量等于候选TBS的数量N，且第一TBS集合中的最大TBS小于或者等于第一指示信息指示的TBS门限。
由于第一TBS集合是第二TBS集合的子集，因此，在确定第一TBS集合之前，需要先获取第二TBS集合，可选的，在本申请实施例中，在获取第二TBS集合时，第二TBS集合是通信协议规定的；或者，在获取第二TBS集合时，从网络设备接收配置信息，并根据配置信息获取第二TBS集合。其中，配置信息用于指示第二TBS集合，即指示第二TBS集合中TBS的值。
可选的，第二TBS集合可以根据覆盖增强模式确定，例如，若覆盖增强模式为CE Mode A模式，该CE Mode A模式下的PUSCH TBS集合包括328、376、392、408、424、440、456、472、488、504、536、552、584、600、616、680、712、744、776、808、840、872、904、936及1000，该PUSCH TBS集合即为第二TBS集合。若覆盖增强模式为CE Mode B模式，该CE Mode B模式下的PUSCH TBS集合包括328、392、408、424、456、472、504、536、584、600、616、680、712、776、808、872及936，该PUSCH TBS集合即为第二TBS集合。
当然，第二TBS集合也可以为上述覆盖增强模式下的最大TBS集合，该最大TBS集合为若干个最大TBS组成的集合，第一指示信息指示的最大TBS为该最大TBS集合中的一个元素。请参见下述表2所示，表2中的第一列为最大TBS值的索引值，第二列为CE Mode A模式下的最大TBS，第三列为CE Mode B模式下的最大TBS。
表2
Figure PCTCN2018081965-appb-000002
其中，328<x1<x2<…<x6<1000，且328<y1<y2<…<y6<936，x1、x2、x3、x4、x5及x6可以为376、392、408、424、440、456、472、488、504、536、552、584、600、616、680、712、744、776、808、840、872、904、936中的值；y1、y2、y3、y4、y5及y6可以为392、408、424、456、472、504、536、584、600、616、680、712、776、808、872中的值。
需要说明的是，终端设备可以通过以下两种不同的规则来确定最大TBS集合：
在一种确定规则中，网络设备可以根据arg min|K-(TBSmin+(TBSMax-TBSmin)/(m+1)*m)|确定m个值，其中，K表示覆盖增强模式下PSUCH的TBS集合中的任一值，TBSmin表示覆盖增强模式下PSUCH的TBS集合中最小TBS，TBSMax表示覆盖增强模式下PSUCH的TBS集合中最大TBS，N为大于等于1的整数。
请结合上述表2所示，示例的，网络设备可以根据该选择规则确定CE Mode A模式下，最大TBS集合包括328、424、536、616、712、808、904及1000，CE Mode B模式下的最大TBS集合包括328、408、504、584、680、776、872及936，从而确定两种不同CE模式下对应的最大TBS集合，请参见表3所示：
表3
Figure PCTCN2018081965-appb-000003
在另一种确定规则中，网络设备可以根据arg min(K-(TBSmin+(TBSMax-TBSmin)/(N+1)*m))，和(K-(TBSmin+(TBSMax-TBSmin)/(N+1)*m))>0确定N个值，，其中，K表示覆盖增强模式下的PUSCH TBS集合中的任一值，TBSmin表示覆盖增强模式下PSUCH的TBS集合中最小TBS，TBSMax表示覆盖增强模式下PSUCH的TBS集合中最大TBS，N为大于等于1的整数。
请结合上述表2所示，示例的，网络设备可以根据该确定规则确定CE Mode A模式下，最大TBS集合包括328、424、536、616、712、808、904及1000，CE Mode B模式下的最大TBS集合包括328、424、504、600、680、776、872及936，从而确定两种不同CE模式下对应最大TBS集合，请参见表4所示：
表4
索引(Index) Mode A下最大TBS值 Mode B下最大TBS值
1 328 328
2 424 424
3 536 504
4 616 600
5 712 680
6 808 776
7 904 872
8 1000 936
需要说明的是，在上述确定最大TBS集合时，本申请实施例只是以上述两种选择规则为例进行说明，当然也可以非均匀选择并确定最大TBS集合，在此，本申请实施例不做进一步地限制。
在确定第二TBS集合之后，终端设备就可以根据第二指示信息指示的候选TBS的数量和第二TBS集合获取第一TBS集合。
可选的，第一TBS集合可以包括第二TBS集合中小于或者等于第一指示信息指示的TBS门限且与第一指示信息指示的TBS门限的差值最小的N个TBS，N为候选TBS的数量。
示例的，以终端设备的覆盖增强模式为CE Mode A，且第二TBS集合包括328、424、536、616、712、808、904及1000为例，若第二指示信息指示的候选TBS的个数N为4个，则确定第一TBS集合包括TBS门限1000，及与TBS门限的差值最小的3个TBS，即904、808及712。
当然，第一TBS集合也可以包括第二TBS集合中的N个TBS，N个TBS包括第二TBS集合中的最小TBS和最大TBS，N为候选TBS的数量，N个TBS在第二TBS集合中满足平均分布。本发明中，所述“平均分布”为近似平均分布。举例说明，原有概念的平均分布，例如1与10之间分布8个整数，则这8个整数为2、3、4、5、6、7、8、9。即满足等差数列的性质。所谓近似平均分布，例如1与10之间分布3个整数，则这3个整数为3、5(或6)、8。
同样以终端设备的覆盖增强模式为CE Mode A，且第二TBS集合包括328、424、536、616、712、808、904及1000为例，若第二指示信息指示的候选TBS的个数N为4个，则确定第一TBS集合包括TBS门限1000、最小TBS 328，以及均匀分布在328和1000之间的两个TBS。可选的，在确定均匀分布在328和1000之间的两个TBS时，可以参见上述两种确定规则，在此，本申请实施例不再进行赘述。
S204、当终端设备有第一数据需要发送时，且该第一数据所需TBS小于或等于TBS门限时，向网络设备发送指示EDT的随机接入码Preamble。
S205、网络设备向终端设备发送消息2。
需要说明的是，该消息2包括的消息内容可以结合S202中的描述，若S202中第二指示信息承载在系统消息中，则该步骤中的消息2使用现在技术中的消息2，即不做改变；若S201中的第二指示信息承载在消息2中，则该步骤中的消息2的MAC子头可以包括第二指示信息；或者，消息2的RAR可以包括第二指示信息；或者，消息2的上行授权UL Grant可以包括第二指示信息，具体如何承载可参见上述S502中的描述，在此，本申请实施例不再进行赘述。
S206、终端设备在第一TBS集合中选择用于传输第一数据的目标TBS。
其中，目标TBS为第一TBS集合中大于或等于第一数据所需TBS的最小TBS，且目标TBS小于或等于第一指示信息指示的TBS门限。
可选的，第一数据为包括用户面数据的消息3。
在确定第一TBS集合之后，就可以在该第一TBS集合中选择用于传输第一数据的目 标TBS，进而根据该目标TBS传输第一数据。以第一TBS集合包括712、808、904及1000为例，若待传输的第一数据所需TBS为750，为了减少资源浪费，并提高资源的利用率，可以将第一TBS集合中大于750，且与750的差值最小的TBS确定为目标TBS，即目标TBS为808。
S207、根据目标TBS向网络设备发送第一数据。
在确定目标TBS之后，就可以根据该目标TBS向网络设备发送第一数据。示例的，在根据目标TBS向网络设备发送第一数据时，若第一数据所需TBS与该目标TBS相等，则直接根据目标TBS向网络设备发送第一数据；若第一数据所需TBS小于该目标TBS，则需要额外在第一数据之后填充“0”，直至填充后的数据所需TBS等于该目标TBS，之后，再根据目标TBS向网络设备发送第一数据(此时的第一数据是包含padding bit的)。示例的，请参见上述S307中的描述，第一数据所需TBS为750，目标TBS为808，则在发送第一数据时，终端设备需要额外在第一数据之后填充58bite“0”，直至填充后的数据所需TBS等于目标TBS 808，之后，再根据该目标TBS发送第一数据。
本申请实施例提供的数据传输方法，通过接收网络设备发送的第一指示信息和第二指示信息，其中，第二指示信息用于指示候选TBS的数量，使得终端设备可以根据第二指示信息获取第一TBS集合，在第一TBS集合中选择用于传输第一数据的目标TBS，之后，再根据目标TBS向网络设备发送第一数据。由此可见，在发送第一数据时，并不像现有技术中那样，直接根据网络设备广播的TBS门限传输数据，而是先通过第二指示信息获取第一TBS集合，并在第一TBS集合中选择一个大于或等于第一数据所需TBS的最小TBS作为目标TBS，由于该目标TBS大于或等于第一数据所需TBS，因此，根据该目标TBS传输第一数据时不会影响第一数据的传输，且由于该目标TBS是大于或等于第一数据所需TBS的最小TBS，这样需要额外填充较少比特的“0”，使得资源的浪费较少，从而提高了资源的利用率。
当终端设备采用上述第二种可能的实现方式，即终端设备根据第四指示信息获取第一TBS集合时，其相应的数据传输方法请参见图7所示，图7为本申请实施例提供的另一种数据传输方法的示意图，该数据传输方法可以包括：
S701、网络设备向终端设备发送第一指示信息。
其中，第一指示信息用于指示传输块大小TBS门限。
示例的，终端设备接收第一指示信息时，可以通过系统消息接收第一指示信息，该接收过程具体为：网络设备可以广播该系统消息，该系统消息中包括该第一指示信息，使得终端设备可以通过系统消息接收该第一指示信息。
S702、网络设备向终端设备发送第四指示信息。
其中，第四指示信息用于指示第一TBS集合。
当第四指示信息用于指示第一TBS集合，可以通过以下三种可能的指示方式中一种方式进行指示，具体为：
方式1、第四指示信息包括第一TBS集合，使得终端设备可以根据第四指示信息直接获取该第一TBS集合。例如，第一TBS集合中包含整数个TBS的值，例如第一TBS集合为{A，B，C，D}，其中A，B，C，D为TBS的值。
需要说明的是，在方式1中，当第四指示信息包括第一TBS集合时，网络设备可以向 终端设备发送系统消息，该系统消息包括第四指示信息，即该第四指示信息可以承载系统消息中发送给终端设备。
方式2：第四指示信息包括第一TBS集合索引，第一TBS集合索引与第一TBS集合对应。
需要说明的是，在方式2中，当第四指示信息包括第一TBS集合索引时，网络设备可以向终端设备发送系统消息，该系统消息包括第四指示信息，即该第四指示信息可以承载在系统消息中发送给终端设备；或者，网络设备可以向终端设备发送消息2，消息2包括的MAC子头可以包括第四指示信息，从而通过MAC子头将第四指示信息发送给终端设备；或者，消息2包括的随机接入响应RAR可以包括第四指示信息，从而通过RAR将第四指示信息发送给终端设备；或者，该消息2中包括的上行授权UL Grant包括第四指示信息，从而通过UL Grant将第四指示信息发送给终端设备，在通过该系统消息或消息2将第四指示信息发送给终端设备时，其具体承载方式请参见上述S202中的相关描述，在此，本申请实施例不再进行赘述。
方式3：第四指示信息包括第二TBS集合中元素的索引。
其中，第二TBS集合中元素的索引用于使终端设备获取第一TBS集合，第一TBS集合包括第二TBS集合中与第四指示信息包括的索引对应的元素。
需要说明的是，在方式3中，当第四指示信息包括第二TBS集合中元素的索引时，网络设备可以向终端设备发送系统消息，该系统消息包括第四指示信息，即该第四指示信息可以承载在系统消息中发送给终端设备；当然，网络设备可以向终端设备发送消息2，该消息2中包括的上行授权UL Grant包括第四指示信息，即该第四指示信息可以承载在上行授权UL Grant中发送给终端设备，在通过该系统消息或上行授权UL Grant将第四指示信息发送给终端设备时，其具体承载方式请参见上述S202中的相关描述，在此，本申请实施例不再进行赘述。
S703、终端设备根据第四指示信息获取第一TBS集合。
终端设备在根据第四指示信息获取第一TBS集合时，由于第四指示信息包括多种不同的指示方式，对应的，终端设备也可以通过不同的获取方式获取第一TBS集合，下面，将对这些不同的获取方式进行详细描述：
当第四指示信息包括第一TBS集合时，终端设备可以直接根据包括第一TBS集合的第四指示信息获取第一TBS集合。示例的，若终端设备可使用的第一TBS集合包括712、808、904及1000，则网络设备直接通过系统消息向终端设备发送包括712、808、904及1000的第一TBS集合，使得终端设备可以直接根据系统消息中承载的第四指示信息获取第一TBS集合。
当第四指示信息包括第一TBS集合索引，且第一TBS集合索引与第一TBS集合对应时，终端设备可以预先存储多个可使用的候选TBS集合，每一个候选TBS集合均对应有各自的TBS集合索引，网络设备可以通过向终端设备发送包括第一TBS集合索引的第四指示信息，使得终端设备可以根据第四指示信息中包括的第一TBS集合索引确定第一TBS集合。示例的，若终端设备预先存储4个候选TBS集合，第一候选TBS集合包括328、472、680及1000，该第一候选TBS集合对应的TBS集合索引为1；第二候选TBS集合包括328、456、714及1000，该第二候选TBS集合对应的TBS集合索引为2；第三候选TBS集合包 括328、488、744及1000，该第三候选TBS集合对应的TBS索引集合为3；第四候选TBS集合包括712、808、904及1000，该第四候选TBS集合对应的TBS集合索引为4；网络设备可以将包括第一TBS集合索引4的第四指示信息发送给终端设备，使得终端设备可以在接收到第四指示信息之后，可以根据第四指示信息中包括的第一TBS集合索引4确定第一TBS集合为包括712、808、904及1000的第四候选TBS集合，从而获取第一TBS集合。
当第四指示信息包括第二TBS集合中元素的索引时，由于第一TBS集合包括第二TBS集合中与第四指示信息包括的索引对应的元素，因此，在确定第一TBS集合之前，需要先获取第二TBS集合，可选的，在本申请实施例中，在获取第二TBS集合时，第二TBS集合是通信协议规定的；或者，从网络设备接收配置信息，并根据配置信息获取第二TBS集合。其中，配置信息用于指示第二TBS集合。在此，关于第二TBS的获取方式及获取过程，可参见上述S202中的相关描述，在此，本申请实施例不再进行指数。
在获取到第二TBS集合之后，就可以根据该第二TBS集合及第四指示信息包括的索引确定第一TBS集合。示例的，请参见上述表3所示，若第二TBS集合包括CE Mode A模式下，索引1对应的328、索引2对应的424，索引3对应的536，索引4对应的616，索引5对应的712，索引6对应的808、索引7对应的904及索引8对应的1000，且第四指示信息包括索引5、6、7及8，则可以根据该索引5、6、7及8及第二TBS集合确定第一TBS集合包括712、808、904及1000，从而获取该第一TBS集合。
S704、当终端设备有第一数据发送时，且该第一数据所需TBS小于或等于TBS门限时，向网络设备发送指示EDT的随机接入码。
S705、网络设备向终端设备发送消息2。
需要说明的是，该消息2包括的消息内容可以结合S702中的描述，若S702中第四指示信息承载在系统消息中，则该步骤中的消息2使用现有技术中的消息2；若S702中的第四指示信息承载在消息2中，则该步骤中的消息2的MAC子头可以包括第四指示信息；或者，消息2的RAR可以包括第四指示信息；或者，则该步骤中的消息2上行授权UL Grant可以包括第二指示信息，具体如何承载可参见上述S202中的描述，在此，本申请实施例不再进行赘述。
S706、终端设备在第一TBS集合中选择用于传输第一数据的目标TBS。
其中，目标TBS为第一TBS集合中大于或等于第一数据所需TBS的最小TBS，且目标TBS小于或等于第一指示信息指示的TBS门限。
在确定第一TBS集合之后，就可以在该第一TBS集合中选择用于传输第一数据的目标TBS集合，进而根据该目标TBS集合传输第一数据。以第一TBS集合包括712、808、904及1000为例，若待传输的第一数据所需TBS为750，为了减少资源浪费，并提高资源的利用率，可以将第一TBS集合中大于750，且与750的差值最小的TBS确定为目标TBS，即目标TBS为808。
S707、根据目标TBS向网络设备发送第一数据。
在确定目标TBS之后，就可以根据该目标TBS向网络设备发送第一数据。示例的，在根据目标TBS向网络设备发送第一数据时，若第一数据所需TBS与该目标TBS相等，则直接根据目标TBS向网络设备发送第一数据；若第一数据所需TBS小于该目标TBS， 则需要额外在第一数据添充“0”，直至填充后的第一数据所需TBS等于该目标TBS，之后，再根据目标TBS向网络设备发送第一数据。示例的，请参见上述S307中的描述，第一数据所需TBS为750，目标TBS为808，则在发送第一数据时，终端设备需要额外在第一数据添充58bite“0”，直至填充后的第一数据所需TBS等于目标TBS808，之后，再根据该目标TBS发送第一数据。
本申请实施例提供的数据传输方法，通过接收网络设备发送的第一指示信息和第四指示信息，其中，第四指示信息用于指示第一TBS集合，使得终端设备可以根据第四指示信息获取第一TBS集合，在第一TBS集合中选择用于传输第一数据的目标TBS，之后，再根据目标TBS向网络设备发送第一数据。由此可见，在发送第一数据时，并不像现有技术中那样，直接根据网络设备广播的TBS门限传输数据，而是先通过第四指示信息获取第一TBS集合，并在第一TBS集合中选择一个大于或等于第一数据所需TBS的最小TBS作为目标TBS，由于该目标TBS大于或等于第一数据所需TBS，因此，根据该目标TBS传输第一数据时不会影响第一数据的传输，且由于该目标TBS是大于或等于第一数据所需TBS的最小TBS，这样需要额外添充较少比特的“0”，使得资源的浪费较少，从而提高了资源的利用率。
图8为本申请实施例提供的一种通信设备80的结构示意图，请参见图8所示，该通信设备80可以包括处理器801，处理器801用于与存储器802耦合，读取并执行存储器802中的指令，以实现如上述第一方面中任一项所示的数据传输方法。
可选的，该通信设备80还可以包括：存储器802。
本申请实施例所示的通信设备80，可以执行上述任一项实施例所示的数据传输方法的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图9为本申请实施例提供的一种网络设备90的结构示意图，请参见图9所示，该网络设备90可以包括处理器901，处理器901用于与存储器902耦合，读取并执行存储器902中的指令，以实现如上述第二方面中任一项所示的数据传输方法。
可选的，该网络设备90可以包括：存储器902。
本申请实施例所示的网络设备90，可以执行上述任一项实施例所示的数据传输方法的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例还提供一种计算机存储介质，包括指令，当指令在通信设备上运行时，使得通信设备执行如上述第一方面中任一项所示的数据传输方法，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例还提供一种计算机存储介质，包括指令，当指令在网络设备上运行时，使得网络设备执行如上述第二方面中任一项所示的数据传输方法，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例还提供一种芯片，芯片上存储有计算机程序，在计算机程序被处理器执行时，执行上述任一实施例所示的数据传输方法，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例还提供一种通信系统，该通信系统包括上述任一实施例所示的通信设备和上述任一实施例所示的网络设备，其实现原理以及有益效果类似，此处不再进行赘述。
上述各个实施例中处理器可以是通用处理器、数字信号处理器(digital signal processor， DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1002，处理器1001读取存储器1002中的指令，结合其硬件完成上述方法的步骤。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。

Claims (28)

  1. 一种数据传输方法，其特征在于，包括：
    接收第一指示信息，所述第一指示信息用于指示传输块大小TBS门限；
    从网络设备接收第二指示信息，所述第二指示信息用于指示候选TBS的数量N；
    获取第一TBS集合，所述第一TBS集合中元素的数量等于所述候选TBS的数量N，所述第一TBS集合中的最大TBS小于或者等于所述第一指示信息指示的所述TBS门限；
    在所述第一TBS集合中选择用于传输第一数据的目标TBS；其中，所述目标TBS为所述第一TBS集合中大于或等于所述第一数据所需TBS的最小TBS；
    根据所述目标TBS向所述网络设备发送所述第一数据。
  2. 根据权利要求1所述的方法，其特征在于，所述第一TBS集合为第二TBS集合的子集，所述第一TBS集合包括所述第二TBS集合中小于或者等于所述第一指示信息指示的所述TBS门限且与所述第一指示信息指示的所述TBS门限的差值最小的N个TBS，N为所述候选TBS的数量。
  3. 根据权利要求1所述的方法，其特征在于，所述第一TBS集合为第二TBS集合的子集，所述第一TBS集合包括所述第二TBS集合中的N个TBS，N个TBS包括所述第二TBS集合中的最小TBS和最大TBS，N等于所述候选TBS的数量，N个TBS在所述第二TBS集合中满足平均分布。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，还包括：
    从网络设备接收第三指示信息，所述第三指示信息用于指示增强覆盖等级，所述增强覆盖等级与所述候选TBS的数量关联。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，
    所述第二TBS集合是通信协议规定的；或者，
    从所述网络设备接收配置信息，所述配置信息用于指示所述第二TBS集合。
  6. 根据权利要求1-5任一所述的方法，其特征在于，所述第二TBS集合为覆盖增强模式下的TBS集合，其中，所述覆盖增强模式为CE Mode A模式或CE Mode B模式；
    若所述覆盖增强模式为CE Mode A模式，所述第二TBS集合包括328、376、392、408、424、440、456、472、488、504、536、552、584、600、616、680、712、744、776、808、840、872、904、936及1000；或者，若所述覆盖增强模式为CE Mode A模式，所述第二TBS集合包括328、424、536、616、712、808、904及1000；或者，
    若所述覆盖增强模式为CE Mode B模式，所述第二TBS集合包括328、392、408、424、456、472、504、536、584、600、616、680、712、776、808、872及936；或者，当所述覆盖增强模式为CE Mode B模式时，所述第二TBS集合包括328、408、504、584、680、776、872及936。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述从网络设备接收第二指示信息包括：
    从所述网络设备接收系统消息，所述系统消息包括所述第二指示信息。
  8. 根据权利要求1-6任一项所述的方法，其特征在于，所述从网络设备接收第二指示 信息包括：
    从所述网络设备接收消息2，所述消息2包括所述第二指示信息。
  9. 根据权利要求8所述的方法，其特征在于，
    所述消息2包括的MAC子头包括所述第二指示信息；或者，
    所述消息2包括的随机接入响应RAR包括所述第二指示信息；或者，
    所述消息2包括的上行授权UL Grant包括所述第二指示信息。
  10. 根据权利要求1-9任一所述的方法，其特征在于，所述第一数据为包括用户面数据的消息3。
  11. 根据权利要求1-10任一所述的方法，其特征在于，所述方法用于随机接入过程。
  12. 一种数据传输方法，其特征在于，包括：
    发送第一指示信息，所述第一指示信息用于指示传输块大小TBS门限；
    向终端设备发送第二指示信息，所述第二指示信息用于指示候选TBS的数量N；所述候选TBS的数量为第一TBS集合中元素的数量，所述第一TBS集合中的最大TBS小于或者等于所述第一指示信息指示的所述TBS门限；
    从所述终端设备接收第一数据；所述第一数据是所述终端设备根据目标TBS发送的，所述目标TBS为所述第一TBS集合中大于或等于所述第一数据所需TBS的最小TBS。
  13. 根据权利要求12所述的方法，其特征在于，所述第一TBS集合为第二TBS集合的子集，所述第一TBS集合包括所述第二TBS集合中小于或者等于所述第一指示信息指示的所述TBS门限且与所述第一指示信息指示的所述TBS门限的差值最小的N个TBS，N为所述候选TBS的数量。
  14. 根据权利要求12所述的方法，其特征在于，所述第一TBS集合为第二TBS集合的子集，所述第一TBS集合包括所述第二TBS集合中的N个TBS，所述N个TBS包括所述第二TBS集合中的最小TBS和最大TBS，N为所述候选TBS的数量，N个TBS在所述第二TBS集合中满足平均分布。
  15. 根据权利要求12-14任一项所述的方法，其特征在于，还包括：
    向所述终端设备发送第三指示信息，所述第三指示信息用于指示增强覆盖等级，所述增强覆盖等级与所述候选TBS的数量关联。
  16. 根据权利要求12-15任一项所述的方法，其特征在于，
    所述第二TBS集合是通信协议规定的；或者，
    向所述终端设备发送配置信息，所述配置信息用于指示所述第二TBS集合。
  17. 根据权利要求12-16任一项所述的方法，其特征在于，所述第二TBS集合为覆盖增强模式下的TBS集合，其中，所述覆盖增强模式为CE Mode A模式或CE Mode B模式；
    若所述覆盖增强模式为CE Mode A模式，所述第二TBS集合包括328、376、392、408、424、440、456、472、488、504、536、552、584、600、616、680、712、744、776、808、840、872、904、936及1000；或者，若所述覆盖增强模式为CE Mode A模式，所述第二TBS集合包括328、424、536、616、712、808、904及1000；或者，
    若所述覆盖增强模式为CE Mode B模式，所述第二TBS集合包括328、392、408、424、456、472、504、536、584、600、616、680、712、776、808、872及 936；或者，所述覆盖增强模式为CE Mode B模式，所述第二TBS集合包括328、408、504、584、680、776、872及936。
  18. 根据权利要求12-17任一项所述的方法，其特征在于，所述向终端设备发送第二指示信息包括：
    向所述终端设备发送系统消息，所述系统消息包括所述第二指示信息。
  19. 根据权利要求12-17任一项所述的方法，其特征在于，所述向终端设备发送第二指示信息包括：
    向所述终端设备发送消息2，所述消息2包括所述第二指示信息。
  20. 根据权利要求19所述的方法，其特征在于，
    所述消息2包括的MAC子头包括所述第二指示信息；或者，
    所述消息2包括的随机接入响应RAR包括所述第二指示信息；或者，
    所述消息2包括的上行授权UL Grant包括所述第二指示信息。
  21. 根据权利要求12-20任一所述的方法，其特征在于，所述第一数据为包括用户面数据的消息3。
  22. 根据权利要求12-21任一所述的方法，其特征在于，所述方法用于随机接入过程。
  23. 一种通信设备，包括处理器，其特征在于，
    所述处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现如权1-11任一所述的方法。
  24. 根据权利要求23所述的设备，其特征在于，还包括：
    所述存储器。
  25. 一种网络设备，包括处理器，其特征在于，
    所述处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现如权12-22任一所述的方法。
  26. 根据权利要求25所述的设备，其特征在于，还包括：
    所述存储器。
  27. 一种计算机存储介质，包括指令，其特征在于，当所述指令在通信设备上运行时，使得所述通信设备执行如权1-11任一所述的方法。
  28. 一种计算机存储介质，包括指令，其特征在于，当所述指令在网络设备上运行时，使得所述网络设备执行如权12-22任一所述的方法。
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