WO2019213975A1 - 一种信息传输方法和通信设备以及网络设备 - Google Patents

一种信息传输方法和通信设备以及网络设备 Download PDF

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Publication number
WO2019213975A1
WO2019213975A1 PCT/CN2018/086617 CN2018086617W WO2019213975A1 WO 2019213975 A1 WO2019213975 A1 WO 2019213975A1 CN 2018086617 W CN2018086617 W CN 2018086617W WO 2019213975 A1 WO2019213975 A1 WO 2019213975A1
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Prior art keywords
message
downlink control
control information
bit
tbs
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PCT/CN2018/086617
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English (en)
French (fr)
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赵越
余政
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18917981.5A priority Critical patent/EP3790207B1/en
Priority to BR112020022906-7A priority patent/BR112020022906A2/pt
Priority to CN201880093284.XA priority patent/CN112088507B/zh
Priority to PCT/CN2018/086617 priority patent/WO2019213975A1/zh
Publication of WO2019213975A1 publication Critical patent/WO2019213975A1/zh
Priority to US17/094,363 priority patent/US11564246B2/en

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    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L1/0001—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
    • 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
    • H04L1/0028—Formatting
    • H04L1/0031—Multiple signaling transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1893—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
    • H04L27/2042—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to an information transmission method, a communication device, and a network device.
  • a large-scale application deployment of a wireless communication system can provide various types of communication to a plurality of users, for example, voice, data, multimedia services, and the like.
  • Msg3 can transmit uplink user data in Msg3, involving the use of the medium access control protocol (Medium).
  • Medium Access Control, MAC
  • RAR Random Access Responses
  • the UE can reselect the Physical Random Access Channel (PRACH) resources to complete the random access.
  • PRACH Physical Random Access Channel
  • the UE needs to repeat the transmission multiple times according to the prior art, which causes waste of transmission resources.
  • the embodiment of the present application provides an information transmission method, a communication device, and a network device, which can save power consumption of the communication device.
  • an embodiment of the present application provides an information transmission method, where the method includes:
  • the communication device receives the first downlink control information, where the first downlink control information includes scheduling information that the communications device transmits the first data;
  • the communication device acquires the indication information in the first downlink control information, where the indication information is used to indicate that the first data transmitted by the communication device is the first message 3 or the second message 3;
  • the first message 3 is a message 3 that does not carry user data, and the second message 3 is a message 3 carrying user data; or the first message 3 is a message 3 carrying user data, the second message Message 3 is a message 3 carrying user data, and the transport block size TBS used for the transmission of the first message 3 is the TBS used by the communication device in the initial message 3 transmission, and the TBS used for the transmission of the second message 3 is TBS of network device configuration;
  • the bit length of the indication information is 1 bit; the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes scheduling information that the communications device transmits the second data. And the second downlink control information does not include the indication information;
  • the communication device transmits the first data according to the scheduling information and the indication information.
  • the communications device may include a device such as a terminal device or a chip.
  • the terminal device receives the first downlink control information, where the first downlink control information includes scheduling information of the first data transmission by the terminal device, and the second downlink control information includes the terminal device that transmits the second data.
  • Scheduling information, and the first downlink control information includes the indication information, and the second downlink control information does not include the indication information, and the format of the first downlink control information is the same as the format of the second downlink control information, and the first downlink
  • the indication information in the line control information may indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3.
  • the first downlink control information for each transmission in the embodiment of the present application may determine, by using the indication information, that the first data to be transmitted is the first message 3 or the second message 3, and the maximum number of HARQs for the network configuration is not required to be transmitted. The number of transmissions, so it can be determined whether to fall back from transmitting the second message 3 to transmitting the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the embodiment of the present application further provides an information transmission method, where the method includes:
  • the network device sends the first downlink control information, where the first downlink control information includes scheduling information that the communications device transmits the first data;
  • the first downlink control information includes indication information, where the indication information is used to indicate that the first data transmitted by the communications device is the first message 3 or the second message 3, where the first message 3 is not carrying a user.
  • the second message 3 is a message 3 carrying user data; or the first message 3 is a message 3 carrying user data, and the second message 3 is a message 3 carrying user data
  • the transport block size TBS used for the transmission of the first message 3 is the TBS used by the communication device in the initial message 3 transmission, and the TBS used for the second message 3 transmission is the TBS configured by the network device;
  • the bit length of the indication information is 1 bit; the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes scheduling information that the communications device transmits the second data. And the second downlink control information does not include the indication information;
  • the network device receives the first data transmitted by the communication device.
  • the network device sends the first downlink control information, where the first downlink control information includes scheduling information that the terminal device transmits the first data, and the second downlink control information includes the scheduling information that the terminal device transmits the second data.
  • the first downlink control information includes the indication information, and the second downlink control information does not include the indication information, and the format of the first downlink control information is the same as the format of the second downlink control information, and the first downlink control information is used.
  • the indication information in the indication that the first data transmitted by the terminal device is the first message 3 or the second message 3.
  • the first downlink control information for each transmission in the embodiment of the present application may determine, by using the indication information, that the first data to be transmitted is the first message 3 or the second message 3, and the maximum number of HARQs for the network configuration is not required to be transmitted. The number of transmissions, so it can be determined whether to fall back from transmitting the second message 3 to transmitting the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the communication device is in coverage enhancement level 0, coverage enhancement level 1, or coverage enhancement mode A;
  • the first downlink control information further includes a first resource allocation field, where the first resource allocation field includes at least a bit, wherein the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth, the 4 bits in the first resource allocation field indicate a resource block allocation in a narrowband corresponding to the narrowband index, and the second downlink control information further includes a second resource allocation field, where The second resource allocation field includes at least a bit in the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation in a narrowband corresponding to the narrowband index;
  • the first downlink control information further includes a first modulation and coding mode field, where a bit length of the first modulation and coding mode field is H bits, and the second downlink control information further includes a second modulation and coding mode.
  • a field, the bit length of the second modulation and coding mode field is H+1 bits, and the H is a positive integer greater than or equal to 1;
  • the first downlink control information does not include a channel state information CSI request field, and the second downlink control information includes a CSI request field;
  • the first downlink control information does not include a sounding reference signal SRS request field
  • the second downlink control information includes the SRS request field
  • the first downlink control information when the terminal device is in the coverage enhancement level 0, the coverage enhancement level 1, or the coverage enhancement mode A, the first downlink control information further includes a first resource allocation field, for example, the first resource.
  • the allocation field may be Resource allocation in DCI Format6-0A, and the first resource allocation field includes at least Bit, Indicates the number of physical resource blocks (PRBs) included in the system bandwidth. Means rounding down, Indicates an up rounding operation.
  • PRBs physical resource blocks
  • Means rounding down Indicates an up rounding operation.
  • the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and 4 bits in the first resource allocation field indicate resource block allocation within a narrowband corresponding to the narrowband index.
  • the second downlink control information further includes a second resource allocation field, where the second resource allocation field includes at least Bit, where the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation within a narrowband corresponding to the narrowband index.
  • the first resource allocation field in the first downlink control information is one bit smaller than the second resource allocation field in the second downlink control information, and the reduced one bit is used for the first downlink control information.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink control information is used in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the support supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the first downlink control information further includes a first modulation and coding mode field, for example, the first modulation and coding mode field is an MCS in DCI Format6-0A, and a bit length of the first modulation and coding mode field.
  • the H-bit, the second downlink control information further includes a second modulation and coding mode field, the bit length of the second modulation and coding mode field is H+1 bits, and H is a positive integer greater than or equal to 1.
  • the first modulation coding mode field in the first downlink control information is one bit less than the second modulation coding mode field in the second downlink control information, and the reduced one bit is used for the first downlink.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink is adopted in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the control information supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the first downlink control information does not include a CSI request field
  • the second downlink control information includes a CSI request field.
  • the CSI request field may be a CSI request in DCI Format6-0A. Therefore, the first downlink control information is compared with the second downlink control information, and the reduced CSI request field is used for the indication information in the first downlink control information, and the first downlink control information and the second The downlink control information has the same format.
  • the indication information in the first downlink control information is used to support the early fallback to the first message 3, without additionally increasing the overhead of the first downlink control information. Thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the base station when the base station is scheduling the second message 3 or the first message 3, the base station does not schedule the CSI to be reported by the UE, and therefore may not include the CSI in the first downlink control information, and uses the CSI request in the DCI Format 6-0A.
  • the field is used as the indication information, and the indication information may indicate that the second message 3 is sent or is rolled back to the first message 3.
  • the indication information may be used to perform retransmission of the EDT Msg3 or fall back to the legacy Msg3.
  • the first downlink control information does not include an SRS request field
  • the second downlink control information includes an SRS request field
  • the CSI request field may be an SRS request in DCI Format6-0A. Therefore, the first downlink control information is reduced by the SRS request field compared to the second downlink control information, and the reduced SRS request field is used for the indication information in the first downlink control information, the first downlink control information and the second
  • the downlink control information has the same format.
  • the indication information in the first downlink control information is used to support the early fallback to the first message 3, without additionally increasing the overhead of the first downlink control information. Thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the communication device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, the bit length of the first modulation and coding mode field is T bits, and the second downlink control information further includes a second modulation and coding mode field, where The bit length of the second modulation coding mode field is T+1 bits, and the T is a positive integer greater than or equal to 1.
  • the first modulation coding mode field in the first downlink control information is one bit less than the second modulation coding mode field in the second downlink control information, and the reduced one bit is used for the first downlink.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink is adopted in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the control information supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the communication device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, where the indication information is carried by the first modulation and coding mode field, and a bit length of the first modulation and coding mode field is 4 bits, where the When the bit state of a modulation coding mode field is a state of 0000 to 1010, the first data transmitted by the communication device is the first message 3, and the bit state of the first modulation and coding mode field is 1011 ⁇ In the state in 1111, the first data transmitted by the communication device is the second message 3.
  • the first modulation and coding mode field is a Modulation and coding scheme in DCI Format6-0B, and has 4 bits.
  • the indication information in the first downlink control information is carried by the first modulation and coding mode field.
  • the bit length of the first modulation and coding mode field is 4 bits, and the bit state of the first modulation and coding mode field is the state of 0000 to 1010.
  • the first data transmitted by the terminal device may be indicated by the state of 0000 to 1010 as the first message 3, and the bit status indicates the transport block size of the first message 3.
  • the bit state of the first modulation and coding mode field is in the state of 1011 to 1111
  • the first data transmitted by the terminal device may be indicated by the state of 0000 to 1010 as the second message 3.
  • the preset state 1111, the preset state 1110, or the preset state 1011 indicates that the first data transmitted by the terminal device is the second message 3.
  • the communication device When the bit state of the indication information is the first bit state, the communication device sends the second message 3 according to the first TBS, and when the bit state of the indication information is the second bit state, the communication device sends the location Said first message 3 or said communication device transmitting said second message 3 according to a second TBS; or
  • the communication device When the bit state of the indication information is the first bit state, the communication device sends the second message 3 according to the second TBS, and when the bit state of the indication information is the second bit state, the communication device sends the location The first message 3 or the communication device sends the second message 3 according to the first TBS;
  • the first TBS is a TBS determined according to the second TBS
  • the second TBS is a TBS configured by a network device.
  • the second TBS may be the maximum TBS configured by the network device, and the bit status of the indication information may be two types: a first bit state and a second bit state, for example, the first bit state may be 0, and the second bit state may be Is 1. Alternatively, the first bit state may be 1 and the second bit state may be 0.
  • the second message 3 carries the user data.
  • the terminal device sends the second message 3 according to the first TBS, for example, the first TBS is less than or equal to the maximum transmission configured by the network device. Block size.
  • the terminal device sends the first message 3 or the terminal device sends the second message 3 according to the second TBS, that is, when the terminal device is in the second bit state according to the bit state of the indication information, the terminal The device may fall back from the transmission of the second message 3 to the first message 3, or may transmit the second message 3 in accordance with the TBS (ie the second TBS) configured by the network device. For example, when the bit status of the indication information is 1, the first message 3 is transmitted, and when the bit status of the indication information is 0, the second message 3 is transmitted.
  • the terminal may be instructed whether to perform EDT fallback, that is, to fall back from the EDT Msg3 to the Msg3 of the leadcy, without retransmitting the random indication for the leadcy Msg3 after the terminal device performs multiple HARQ repeated transmissions.
  • EDT fallback that is, to fall back from the EDT Msg3 to the Msg3 of the leadcy
  • the base station Accessing the preamble sequence, the base station schedules leadcy Msg3 according to the sent random access preamble sequence, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the resource allocation field of the first downlink control information includes at least a bit in the resource allocation field The bit indicates a narrowband index on the upstream bandwidth, and the X bits in the resource allocation field indicate resource allocation within the narrowband;
  • the resource allocation field of the first downlink control information includes at least Bit in the resource allocation field
  • the bit indicates a narrowband index on the uplink bandwidth
  • the first downlink control information further includes a Y bit
  • each of the M ⁇ L states of the Y bit indicates the first transmission by the communication device
  • One data is the first message 3
  • each of the M ⁇ L states of the Y bits indicates a modulation coding mode and a narrowband intraband resource allocation, wherein the narrowband intraband resource allocation has a total of M resources.
  • the modulation coding mode has a total of L types of indexes, and the M and L are positive integers, and one or more states of the Y bits other than the M ⁇ L states indicate The first data transmitted by the communication device is the second message 3.
  • the length of the resource allocation field of the first downlink control information is Bit.
  • the first downlink control information includes 8 bits, and the 8 bits indicate 256 states, and 252 of the 256 states are used to indicate modulation coding mode and narrowband resource allocation.
  • the combination of the intra-narrowband resource allocation includes 21 types, and the index value of the coding mode includes 12 types of K ⁇ (K+10) and M, when the bit status indicates that the index value of the modulation and coding mode is K.
  • the terminal device When the terminal device transmits the first message 3 to a value of (K+10), or the index value of the modulation and coding mode is M, the terminal device transmits the second message 3, where K and M are Integer. For example, K is 0 and M is 11.
  • Joint coding requires 8 bits.
  • the resources in the narrowband are allocated 5 bits, that is, 9 bits in the prior art.
  • the MCS and the resource allocation are jointly encoded and only need 8 bits, so Save 1 bit.
  • the saved 1 bit is used as the indication information, for example, the indication information may be a flag. If the flag is 0, the EDT is retransmitted, and the retransmitted TBS size is adaptively selected by the UE.
  • the EDT retransmission is indicated, and the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index For the other 11 of the 12 MCS values except the A value, then the EDT Msg3 is instructed to fall back to the legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the indicated MCS index.
  • the terminal device when the terminal device is in the coverage enhancement level 2, the coverage enhancement level 3, or the coverage enhancement mode B, when the bit status of the indication information is 0, the length of the resource allocation field of the first downlink control information is Bit.
  • the first downlink control information includes 6 bits, and the 6 bits indicate 64 states, where the 64 states are used to indicate a combination of a modulation coding mode and a narrowband intraband resource allocation.
  • the index value of the coding mode includes eight types of Q to (Q+6) and S, and the index value of the modulation and coding mode is one of Q to (Q+6).
  • the terminal device transmits the first message 3.
  • the index value of the modulation and coding mode is S
  • the existing MCS state can be limited from 11 to 8 types, and the state of resource allocation in the narrowband is still maintained at 8 types.
  • the in-band resources are allocated 3 bits, and the embodiment of the present application saves 1 bit.
  • the saved 1 bit is used as the indication information, for example, the indication information may be flag. If the flag is 0, the EDT is retransmitted, and the retransmitted TBS size is adaptively selected by the UE.
  • the EDT retransmission is indicated, and the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index It is the other 7 of the 8 MCS values, then the EDT Msg3 is instructed to fall back to legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the MCS index.
  • the format of the first downlink control information is downlink control information DCI format format 6-0A; or
  • the format of the first downlink control information is DCI format 6-0B.
  • the embodiment of the present application further provides a communications device, where the communications device includes:
  • a receiving module configured to receive first downlink control information, where the first downlink control information includes scheduling information that the communications device transmits the first data;
  • the processing module is configured to obtain the indication information in the first downlink control information, where the indication information is used to indicate that the first data transmitted by the communication device is the first message 3 or the second message 3;
  • the first message 3 is a message 3 that does not carry user data, and the second message 3 is a message 3 carrying user data; or the first message 3 is a message 3 carrying user data, the second message Message 3 is a message 3 carrying user data, and the transport block size TBS used for the transmission of the first message 3 is the TBS used by the communication device in the initial message 3 transmission, and the TBS used for the transmission of the second message 3 is TBS of network device configuration;
  • the bit length of the indication information is 1 bit; the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes scheduling information that the communications device transmits the second data. And the second downlink control information does not include the indication information;
  • a sending module configured to transmit the first data according to the scheduling information and the indication information.
  • the embodiment of the present application further provides a network device, where the network device includes:
  • a processing module configured to send, by using a sending module, first downlink control information, where the first downlink control information includes scheduling information that the communications device transmits the first data;
  • the first downlink control information includes indication information, where the indication information is used to indicate that the first data transmitted by the communications device is the first message 3 or the second message 3, where the first message 3 is not carrying a user.
  • the second message 3 is a message 3 carrying user data; or the first message 3 is a message 3 carrying user data, and the second message 3 is a message 3 carrying user data
  • the transport block size TBS used for the transmission of the first message 3 is the TBS used by the communication device in the initial message 3 transmission, and the TBS used for the second message 3 transmission is the TBS configured by the network device;
  • the bit length of the indication information is 1 bit; the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes scheduling information that the communications device transmits the second data. And the second downlink control information does not include the indication information;
  • the processing module is configured to receive, by the receiving module, the first data that is transmitted by the communications device.
  • the communication device is in coverage enhancement level 0, coverage enhancement level 1, or coverage enhancement mode A;
  • the first downlink control information further includes a first resource allocation field, where the first resource allocation field includes at least a bit, wherein the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth, the 4 bits in the first resource allocation field indicate a resource block allocation in a narrowband corresponding to the narrowband index, and the second downlink control information further includes a second resource allocation field, where The second resource allocation field includes at least a bit in the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation in a narrowband corresponding to the narrowband index;
  • the first downlink control information further includes a first modulation and coding mode field, where a bit length of the first modulation and coding mode field is H bits, and the second downlink control information further includes a second modulation and coding mode.
  • a field, the bit length of the second modulation and coding mode field is H+1 bits, and the H is a positive integer greater than or equal to 1;
  • the first downlink control information does not include a channel state information CSI request field, and the second downlink control information includes a CSI request field;
  • the first downlink control information does not include a sounding reference signal SRS request field
  • the second downlink control information includes the SRS request field
  • the communication device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, the bit length of the first modulation and coding mode field is T bits, and the second downlink control information further includes a second modulation and coding mode field, where The bit length of the second modulation coding mode field is T+1 bits, and the T is a positive integer greater than or equal to 1.
  • the communication device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, where the indication information is carried by the first modulation and coding mode field, and a bit length of the first modulation and coding mode field is 4 bits, where the When the bit state of a modulation coding mode field is a state of 0000 to 1010, the first data transmitted by the communication device is the first message 3, and the bit state of the first modulation and coding mode field is 1011 ⁇ In the state in 1111, the first data transmitted by the communication device is the second message 3.
  • the communication device When the bit state of the indication information is the first bit state, the communication device sends the second message 3 according to the first TBS, and when the bit state of the indication information is the second bit state, the communication device sends the location Said first message 3 or said communication device transmitting said second message 3 according to a second TBS; or
  • the communication device When the bit state of the indication information is the first bit state, the communication device sends the second message 3 according to the second TBS, and when the bit state of the indication information is the second bit state, the communication device sends the location The first message 3 or the communication device sends the second message 3 according to the first TBS;
  • the first TBS is a TBS determined according to the second TBS
  • the second TBS is a TBS configured by a network device.
  • the resource allocation field of the first downlink control information includes at least a bit in the resource allocation field The bit indicates a narrowband index on the upstream bandwidth, and the X bits in the resource allocation field indicate resource allocation within the narrowband;
  • the resource allocation field of the first downlink control information includes at least Bit in the resource allocation field
  • the bit indicates a narrowband index on the uplink bandwidth
  • the first downlink control information further includes a Y bit
  • each of the M ⁇ L states of the Y bit indicates the first transmission by the communication device
  • One data is the first message 3
  • each of the M ⁇ L states of the Y bits indicates a modulation coding mode and a narrowband intraband resource allocation, wherein the narrowband intraband resource allocation has a total of M resources.
  • the modulation coding mode has a total of L types of indexes, and the M and L are positive integers, and one or more states of the Y bits other than the M ⁇ L states indicate The first data transmitted by the communication device is the second message 3.
  • the format of the first downlink control information is downlink control information DCI format format 6-0A; or
  • the format of the first downlink control information is DCI format 6-0B.
  • the embodiment of the present application further provides an information transmission method, including:
  • the communication device receives downlink control information, where the downlink control information includes scheduling information that the communications device transmits the first data;
  • the communication device determines a first transport block size TBS according to the first downlink control information
  • the first data transmitted by the communications device is the first message 3;
  • the second data transmitted by the communications device is a second message 3;
  • the second TBS is a preset transport block size, or a transport block size configured by system information, or a transport block size configured by radio resource control signaling.
  • the embodiment of the present application further provides an information transmission method, including:
  • the network device sends downlink control information, where the downlink control information includes scheduling information for transmitting, by the communications device, the first downlink control information, where the first downlink control information is used by the communications device to determine a first transport block size TBS;
  • the network device When the first TBS is less than or equal to the second TBS, the network device receives the first message 3;
  • the network device receives the second message 3;
  • the second TBS is a preset transport block size, or a transport block size configured by system information, or a transport block size configured by radio resource control signaling.
  • an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the methods described in the above aspects.
  • an embodiment of the present application provides a computer program product comprising instructions, when executed on a computer, causing a computer to perform the method described in the above aspects.
  • the embodiment of the present application provides a communication device, which may include an entity such as a terminal device or a chip, the communication device includes: a processor and a memory; the memory is used to store an instruction; Executing the instructions in the memory, causing the communication device to perform the method of any of the preceding first or fifth aspect.
  • the embodiment of the present application provides a network device, where the network device may include an entity such as a base station or a chip, where the network device includes: a processor and a memory; the memory is used to store an instruction; and the processor is configured to execute The instructions in the memory cause the network device to perform the method of any of the preceding second or sixth aspect.
  • the present application provides a chip system including a processor for supporting a network device or a communication device to implement the functions involved in the above aspects, for example, for transmitting or processing the method involved in the above method. Data and / or information.
  • the chip system further includes a memory for storing necessary program instructions and data of the network device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • FIG. 1 is a schematic structural diagram of a system for transmitting an information according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of an interaction process between a terminal device and a network device according to an embodiment of the present disclosure
  • FIG. 3 is a schematic block diagram of a method for transmitting information according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of another information transmission method according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of another interaction process between a terminal device and a network device according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another terminal device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.
  • the embodiments of the present application provide an information transmission method, a communication device, and a network device, which save power consumption of the communication device.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • a CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA), CDMA2000, and the like.
  • UTRA may include wideband CDMA (WCDMA) technology and other CDMA variant technologies.
  • CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
  • the TDMA system can implement a wireless technology such as a global system for mobile communication (GSM).
  • GSM global system for mobile communication
  • An OFDMA system can implement such as evolved universal radio land access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies.
  • UTRA and E-UTRA are UMTS and UMTS evolved versions.
  • the various versions of 3GPP in long term evolution (LTE) and LTE-based evolution are new versions of UMTS that use E-UTRA.
  • the fifth generation 5 Generation, referred to as "5G" communication system, New Radio (“NR" for short) is the next generation communication system under study.
  • the communication system 100 can also be applied to the future.
  • the communication technology is applicable to the technical solutions provided by the embodiments of the present invention.
  • the system architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute the technologies provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems, as the network architecture evolves and the new service scenario occurs.
  • FIG. 1 is a schematic structural diagram of a possible radio access network (RAN) according to an embodiment of the present application.
  • the RAN may be a base station access system of a 2G network (ie, the RAN includes a base station and a base station controller), or may be a base station access system of a 3G network (ie, the RAN includes a base station and an RNC), or may be 4G.
  • the base station access system of the network ie, the RAN includes an eNB and an RNC
  • the RAN includes one or more network devices 20.
  • the network device 20 may be any device having a wireless transceiving function, or a chip disposed in a device of a specific wireless transceiving function.
  • the network device 20 includes, but is not limited to, a base station (eg, a base station BS, a base station NodeB, an evolved base station eNodeB or eNB, a base station gNodeB or gNB in a fifth generation 5G communication system, a base station in a future communication system, and a WiFi system). Access node, wireless relay node, wireless backhaul node, etc.
  • the base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, and the like.
  • a plurality of base stations may support a network of one or more of the techniques mentioned above, or a future evolved network.
  • the core network may support the above mentioned network of one or more technologies, or a future evolved network.
  • the base station may include one or more co-site or non-co-located transmission receiving points (TRPs).
  • the network device 20 may also be a wireless controller, a centralized unit (CU), or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.
  • the network device can also be a server, a wearable device, or an in-vehicle device.
  • the network device 20 will be described as an example of a base station.
  • the plurality of network devices 20 may be the same type of base station or different types of base stations.
  • the base station can communicate with the terminal device 1-6 or with the terminal device 1-6 via the relay station.
  • the terminal device 1-6 can support communication with multiple base stations of different technologies.
  • the terminal device can support communication with a base station supporting the LTE network, can also support communication with a base station supporting the 5G network, and can also support a base station with the LTE network.
  • dual connectivity of base stations of a 5G network For example, the terminal is connected to a radio access network (RAN) node of the wireless network.
  • RAN radio access network
  • RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), and Node B (Node).
  • B, NB base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit , BBU), or wireless fidelity (Wifi) access point (AP).
  • a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.
  • the communication device 1-6 which is also called a user equipment (UE), a mobile station (MS), a mobile terminal (MT), a terminal, etc., is a voice and/or A data connectivity device, or a chip disposed in the device, for example, a handheld device having an wireless connection capability, an in-vehicle device, or the like.
  • terminal devices are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, enhancements.
  • Augmented reality (AR) equipment wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid A wireless terminal in a wireless terminal, a wireless terminal in a transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, or the like.
  • AR Augmented reality
  • the base station and the UE1 to the UE6 form a communication system, in which the base station sends one or more of the system information, the RAR message, and the paging message to one or more of the UE1 to the UE6.
  • UEs, in addition, UE4 to UE6 also form a communication system, in which UE5 can be implemented as a function of a base station, and UE5 can send one or more of system information, control information, and paging messages to UE4 and One or more UEs in UE6.
  • FIG. 2 is a schematic diagram of an interaction process between a network device and a terminal device according to an embodiment of the present application.
  • the information transmission method provided by the embodiment of the present application mainly includes the following steps.
  • the network device sends the first downlink control information.
  • the first downlink control information includes scheduling information that the terminal device transmits the first data.
  • the network device may send, to the terminal device, first downlink control information (DCI), where the first downlink control information includes scheduling information, where the scheduling information may be used to schedule the terminal device to transmit
  • DCI downlink control information
  • the first data refers to a third message transmitted by the terminal device (ie, message 3, which may also be referred to as Msg3).
  • message 3 refers to the third message in the random access process, and the message 3 can carry user data.
  • Message 3 can support early data transmission (EDT).
  • EDT early data transmission
  • a plurality of messages that can be sent by the terminal device can be respectively configured with corresponding resources.
  • the message 3 in the random access process can be divided into two different types, for example, the first message 3 and the second message 3.
  • the terminal device can send two different messages 3, and the network device can send different messages 3 Configure the corresponding resources separately.
  • the first message 3 is a message 3 that does not carry user data
  • the first message 3 may also be referred to as a legacy message 3 (legacy Msg3)
  • the second message 3 is a message 3 carrying user data
  • the second message 3 is also It can be called EDT Msg3.
  • the first message 3 may be a normal message 3 transmission, and for example, the first message 3 may be a message 3 that does not perform data transmission in advance.
  • the second message 3 is a message 3 for data transmission in advance.
  • the data here can be the service data of the terminal device.
  • the network device allocates specific resources according to different messages 3 sent by the terminal device. For example, the network device may allocate the number of resource blocks (RBs) and the starting resource blocks for the first message 3 to the terminal device.
  • the index, or network device may allocate the number of resource blocks and the starting resource block index for the second message 3 to the terminal device.
  • the first downlink control information may include, in addition to the scheduling information, indication information of the first data, where the indication information is used to indicate that the first data transmitted by the terminal device is the first message 3 or the second. Message 3, indicating that the bit length of the information is 1 bit.
  • the format of the first downlink control information is the same as the format of the second downlink control information, where the second downlink control information includes scheduling information that the terminal device transmits the second data, where the second data is the first Data with different data.
  • the second data may be data transmitted when the terminal device is in the connected state
  • the first data may be data transmitted by the terminal device in the random access process in the idle state.
  • the second downlink control information does not include the indication information
  • the first downlink control information includes the indication information, so the indication information can indicate to the terminal device whether the message 3 to be sent is the first message 3 or the second message 3.
  • the network device may send different downlink control information, for example, may send the first downlink control information or send the second downlink control information.
  • the terminal device receives the first downlink control information.
  • the first downlink control information includes scheduling information that the terminal device transmits the first data.
  • the format of the first downlink control information is downlink control information DCI format format 6-0A; or the format of the first downlink control information is DCI format 6-0B.
  • the terminal device acquires the indication information in the first downlink control information.
  • the indication information is used to indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3.
  • the bit length of the indication information is 1 bit; the format of the first downlink control information and the format of the second downlink control information.
  • the second downlink control information includes scheduling information that the terminal device transmits the second data, and the second downlink control information does not include the indication information.
  • the first downlink control information sent by the network device includes the indication information, and the terminal device may determine, by parsing the indication information, that the network device indicates that the first data transmitted by the terminal device is the first message 3 or Second message 3.
  • the second downlink control information includes scheduling information that the terminal device transmits the second data, where the second data is data that is different from the first data.
  • the second downlink control information does not include the indication information, and the first downlink control information includes the indication information. Therefore, the terminal device can obtain the indication information by receiving the first downlink control information, and determine, by using the indication information, that the first message is sent. 3 is still the second message 3.
  • the terminal device transmits the first data according to the scheduling information and the indication information.
  • the scheduling information in the first downlink control information indicates a scheduling manner of the first data
  • the indication information in the first downlink control information indicates whether the first data to be transmitted is the first message 3 or the first The second message 3, so the terminal device can transmit the first data by using the scheduling information and the indication information, for example, the terminal device transmits the first data through the wireless network. For example, if the indication information indicates that the first data is the first message 3, the terminal device may send the first message 3 based on the scheduling information received this time. If the indication information indicates that the first data is the second message 3, the terminal The device may send the second message 3 based on the scheduling information received this time.
  • the indication information included in the first downlink control information in the embodiment of the present application may be included in the scheduling information, or may not be in the scheduling information, depending on the implementation scenario.
  • the network device receives the first data transmitted by the terminal device.
  • the terminal device transmits the first data according to the scheduling information and the indication information, and the network device may receive the first data sent by the terminal device according to the scheduling information. For example, if the indication information indicates that the first data is the first message 3, the terminal device may send the first message 3 based on the scheduling information received this time, and the network device may receive the first message 3 sent by the terminal device. If the indication information indicates that the first data is the second message 3, the terminal device may send the second message 3 based on the scheduling information received this time, and the network device may receive the second message 3 sent by the terminal device.
  • the terminal device receives the first downlink control information, where the first downlink control information includes scheduling information of the first data transmission by the terminal device, and the second downlink control information includes the second terminal transmission information.
  • the scheduling information of the data, and the first downlink control information includes the indication information, and the second downlink control information does not include the indication information, and the format of the first downlink control information is the same as the format of the second downlink control information,
  • the indication information in the downlink control information may indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3.
  • the first downlink control information for each transmission in the embodiment of the present application may determine, by using the indication information, that the first data to be transmitted is the first message 3 or the second message 3, and the maximum number of HARQs for the network configuration is not required to be transmitted. The number of transmissions, so it can be determined whether to fall back from transmitting the second message 3 to transmitting the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the embodiment of the present application provides an information transmission method, including:
  • the terminal device receives the first downlink control information, where the first downlink control information includes scheduling information that the terminal device transmits the first data.
  • the terminal device first receives the first downlink control information that is sent by the network device, where the first downlink control information includes scheduling information, where the scheduling information is used to schedule the first data to be transmitted by the terminal device.
  • the first data refers to a message transmitted by the terminal device.
  • Message 3 refers to the third message in the random access process, and the message 3 can carry user data.
  • Message 3 can support data advance transmission.
  • a plurality of messages that can be sent by the terminal device can be respectively configured with corresponding resources.
  • the message 3 in the random access process can be divided into two different types, for example, the first message 3 and the second message 3. Therefore, the terminal device can send two different messages 3, and the network device can send different messages 3 Configure the corresponding resources separately.
  • the first message 3 is a message 3 that does not carry user data
  • the second message 3 is a message 3 that carries user data
  • the first message 3 may be a normal message 3 transmission, and for example, the first message 3 may be a message 3 that does not perform data transmission in advance.
  • the second message 3 is a message 3 for data transmission in advance.
  • the data here can be the service data of the terminal device.
  • the terminal device acquires the indication information in the first downlink control information, where the indication information is used to indicate that the first data that is transmitted by the terminal device is the first message 3 or the second message 3, where the first message 3 is not carrying the user data.
  • the second message 3 is a message 3 carrying user data;
  • the bit length of the indication information is 1 bit;
  • the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes the terminal device
  • the scheduling information of the second data is transmitted, and the second downlink control information does not include the indication information.
  • the first message 3 may be a message 3 carrying user data
  • the second message 3 may be a message 3 carrying user data
  • the transmission used by the first message 3 is transmitted.
  • the block size TBS is the TBS used by the terminal device in the initial message 3 transmission
  • the TBS used for the second message 3 transmission is the TBS configured by the network device.
  • the network device may schedule the terminal device to transmit the message 3 carrying the user data according to the TBS configured by the network device in the retransmission scheduling, so that the base station does not need to perform blind detection when receiving the message 3 carrying the user data, thereby reducing the network device. the complexity.
  • the first downlink control information may include, in addition to the scheduling information, indication information of the first data, where the indication information is used to indicate that the first data transmitted by the terminal device is the first message 3 or the second. Message 3, indicating that the bit length of the information is 1 bit.
  • the terminal device is in coverage enhancement level 0, coverage enhancement level 1, or coverage enhancement mode A;
  • the first downlink control information further includes a first resource allocation field, where the first resource allocation field includes at least Bit, where the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth.
  • the 4 bits in the first resource allocation field indicate the resource block allocation in the narrowband corresponding to the narrowband index
  • the second downlink control information further includes a second resource allocation field, where the second resource allocation field includes at least Bit, where the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation in a narrowband corresponding to the narrowband index;
  • the first downlink control information further includes a first modulation and coding mode field, where a bit length of the first modulation and coding mode field is H bits
  • the second downlink control information further includes a second modulation and coding mode field, and the second modulation and coding
  • the bit length of the mode field is H+1 bits, and H is a positive integer greater than or equal to 1;
  • the first downlink control information does not include a Channel State Information (CSI) request field
  • the second downlink control information includes a CSI request field
  • the first downlink control information does not include a Sounding Reference Signal (SRS) request field
  • the second downlink control information includes an SRS request field.
  • SRS Sounding Reference Signal
  • the terminal device is in the coverage enhancement (CE) level of the connected mode, and the CE level0/1/2/3 is the coverage enhancement level of the idle state.
  • the ModeA corresponds to the CE level 0/1.
  • ModeB corresponds to CE level 2/3.
  • the first downlink control information when the terminal device is in the coverage enhancement level 0, the coverage enhancement level 1, or the coverage enhancement mode A, the first downlink control information further includes a first resource allocation field, for example, the first resource.
  • the allocation field may be Resource allocation in DCI Format6-0A, and the first resource allocation field includes at least Bit, Indicates the number of physical resource blocks (PRBs) included in the system bandwidth. Means rounding down, Indicates an up rounding operation.
  • PRBs physical resource blocks
  • Means rounding down Indicates an up rounding operation.
  • the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and 4 bits in the first resource allocation field indicate resource block allocation within a narrowband corresponding to the narrowband index.
  • the second downlink control information further includes a second resource allocation field, where the second resource allocation field includes at least Bit, where the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation within a narrowband corresponding to the narrowband index.
  • the first resource allocation field in the first downlink control information is one bit smaller than the second resource allocation field in the second downlink control information, and the reduced one bit is used for the first downlink control information.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink control information is used in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the support supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the first downlink control information further includes a first modulation and coding mode field, for example, the first modulation and coding mode field is an MCS in DCI Format6-0A, and a bit length of the first modulation and coding mode field.
  • the H-bit, the second downlink control information further includes a second modulation and coding mode field, where the bit length of the second modulation and coding mode field is H+1 bits, and H is a positive integer greater than or equal to 1, for example, the value of H may be 3 bits, H+1 is 4 bits.
  • the first modulation coding mode field in the first downlink control information is one bit less than the second modulation coding mode field in the second downlink control information, and the reduced one bit is used for the first downlink.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink is adopted in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the control information supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the first downlink control information does not include a CSI request field
  • the second downlink control information includes a CSI request field.
  • the CSI request field may be a CSI request in DCI Format6-0A. Therefore, the first downlink control information is compared with the second downlink control information, and the reduced CSI request field is used for the indication information in the first downlink control information, and the first downlink control information and the second The downlink control information has the same format.
  • the indication information in the first downlink control information is used to support the early fallback to the first message 3, without additionally increasing the overhead of the first downlink control information. Thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the base station when the base station is scheduling the second message 3 or the first message 3, the base station does not schedule the CSI to be reported by the UE, and therefore may not include the CSI in the first downlink control information, and uses the CSI request in the DCI Format 6-0A.
  • the field is used as the indication information, and the indication information may indicate that the second message 3 is sent or is rolled back to the first message 3.
  • the indication information may be used to perform retransmission of the EDT Msg3 or fall back to the legacy Msg3.
  • the first downlink control information does not include an SRS request field
  • the second downlink control information includes an SRS request field
  • the CSI request field may be an SRS request in DCI Format6-0A. Therefore, the first downlink control information is reduced by the SRS request field compared to the second downlink control information, and the reduced SRS request field is used for the indication information in the first downlink control information, the first downlink control information and the second
  • the downlink control information has the same format.
  • the indication information in the first downlink control information is used to support the early fallback to the first message 3, without additionally increasing the overhead of the first downlink control information. Thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the base station does not schedule the UE to send the SRS, so the SRS may not be included in the first downlink control information, and the SRS request field in the DCI Format 6-0A is used as the The indication information is used to indicate retransmission of EDT Msg3 or fallback to legacy Msg3 using the SRS request field in DCI Format 6-0A.
  • the terminal device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, where a bit length of the first modulation and coding mode field is T bits
  • the second downlink control information further includes a second modulation and coding mode field, and a bit of the second modulation and coding mode field
  • T is a positive integer greater than or equal to 1.
  • the value of T may be 3 bits
  • the value of T+1 may be 4 bits.
  • the first modulation and coding mode field is an MCS in the DCI Format6-0B, and the bit length of the first modulation and coding mode field is T bits, and the second downlink control information further includes a second modulation and coding mode field, and the second modulation and coding mode.
  • the bit length of the field is T+1 bits.
  • the first modulation coding mode field in the first downlink control information is one bit less than the second modulation coding mode field in the second downlink control information, and the reduced one bit is used for the first downlink.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink is adopted in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the control information supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the terminal device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, where the indication information is carried by the first modulation and coding mode field, the bit length of the first modulation and coding mode field is 4 bits, and the bit state of the first modulation and coding mode field is 0000.
  • the first data transmitted by the terminal device is the first message 3.
  • the bit state of the first modulation and coding mode field is in the state of 1011 to 1111, the first data transmitted by the terminal device is the second message 3. .
  • the first modulation and coding mode field is a Modulation and coding scheme in DCI Format6-0B, and has 4 bits.
  • the indication information in the first downlink control information is carried by the first modulation and coding mode field.
  • the bit length of the first modulation and coding mode field is 4 bits, and the bit state of the first modulation and coding mode field is the state of 0000 to 1010.
  • the first data transmitted by the terminal device may be indicated by the state of 0000 to 1010 as the first message 3, and the bit status indicates the transport block size of the first message 3.
  • the bit state of the first modulation and coding mode field is in the state of 1011 to 1111
  • the first data transmitted by the terminal device may be indicated by the state of 0000 to 1010 as the second message 3.
  • the preset state 1111, the preset state 1110, or the preset state 1011 indicates that the first data transmitted by the terminal device is the second message 3.
  • the indication information in the first downlink control information is carried by the first modulation and coding mode field, and the first downlink control information and the second downlink control information have the same format, without adding an additional first
  • the indication information in the first downlink control information is used to support the rollback to the first message 3 in advance, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the terminal device when the bit status of the indication information is the first bit status, the terminal device sends the second message 3 according to the first TBS, and when the bit status of the indication information is the second bit status, the terminal device sends the a message 3 or the terminal device sends the second message 3 according to the second TBS; or
  • the terminal device When the bit state of the indication information is the first bit state, the terminal device sends the second message 3 according to the second TBS, indicating that the bit state of the information is the second bit state, the terminal device sends the first message 3 or the terminal device according to the first TBS Send a second message 3;
  • the first TBS is a TBS determined according to the second TBS
  • the second TBS is a TBS configured by the network device.
  • the TBS determined by the first TBS according to the second TBS may include the following process: in the process of the EDT, the network device configures a maximum TBS, that is, a second TBS, by using a system message for each coverage enhancement level/mode. The network device may also enable the UE to select a preset TBS value corresponding to the maximum TBS corresponding to the maximum TBS, that is, select a first TBS that is less than or equal to the second TBS.
  • the network device If the network device enables the UE to select a preset TBS value corresponding to the maximum TBS that is less than or equal to the maximum TBS, the network device needs to blindly detect the TBS value used by the UE when decoding, and if the network device does not enable the UE to select the preset.
  • the maximum TBS corresponds to a TBS value that is less than or equal to the maximum TBS, and the UE transmits the Msg3 including the user data according to the first TBS according to the maximum TBS configured by the network device.
  • the second TBS may be the maximum TBS configured by the network device, and the bit status of the indication information may be two types: a first bit state and a second bit state, for example, the first bit state may be 0, and the second bit state may be Is 1. Alternatively, the first bit state may be 1 and the second bit state may be 0.
  • the second message 3 carries the user data.
  • the terminal device sends the second message 3 according to the first TBS, for example, the first TBS is less than or equal to the maximum transmission configured by the network device. Block size.
  • the terminal device sends the first message 3 or the terminal device sends the second message 3 according to the second TBS, that is, when the terminal device is in the second bit state according to the bit state of the indication information, the terminal The device may fall back from the transmission of the second message 3 to the first message 3, or may transmit the second message 3 in accordance with the TBS (ie the second TBS) configured by the network device. For example, when the bit status of the indication information is 1, the first message 3 is transmitted, and when the bit status of the indication information is 0, the second message 3 is transmitted.
  • the terminal may be instructed whether to perform EDT fallback, that is, to fall back from the EDT Msg3 to the Msg3 of the leadcy, without retransmitting the random indication for the leadcy Msg3 after the terminal device performs multiple HARQ repeated transmissions.
  • EDT fallback that is, to fall back from the EDT Msg3 to the Msg3 of the leadcy
  • the base station Accessing the preamble sequence, the base station schedules leadcy Msg3 according to the sent random access preamble sequence, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the resource allocation field of the first downlink control information includes at least Bit, where the resource allocation field The bit indicates a narrowband index on the uplink bandwidth, and the X bit in the resource allocation field indicates resource allocation in the narrowband;
  • the resource allocation field of the first downlink control information includes at least Bit, in the resource allocation field The bit indicates a narrowband index on the uplink bandwidth, and the first downlink control information further includes a Y bit, and each of the M ⁇ L states of the Y bit indicates that the first data transmitted by the terminal device is the first message 3, And each of the M ⁇ L states of the Y bits indicates a modulation coding mode and a resource allocation in a narrowband, wherein the resource allocation in the narrowband has a total of M resource allocation modes, and the modulation coding mode has a total of L indexes, M and L.
  • the states other than the M ⁇ L state in the Y bit indicate that the first data transmitted by the terminal device is the second message 3.
  • the length of the resource allocation field of the first downlink control information is Bit.
  • the first downlink control information includes 8 bits, and the 8 bits indicate 256 states, and 252 of the 256 states are used to indicate modulation coding mode and narrowband resource allocation.
  • the combination of the intra-narrowband resource allocation includes 21 types, and the index value of the coding mode includes 12 types of K ⁇ (K+10) and M, when the bit status indicates that the index value of the modulation and coding mode is K.
  • the terminal device When the terminal device transmits the first message 3 to a value of (K+10), or the index value of the modulation and coding mode is M, the terminal device transmits the second message 3, where K and M are Integer. For example, K is 0 and M is 11.
  • Joint coding requires 8 bits.
  • the resources in the narrowband are allocated 5 bits, that is, 9 bits in the prior art.
  • the MCS and the resource allocation are jointly encoded and only need 8 bits, so Save 1 bit.
  • the saved 1 bit is used as the indication information, for example, the indication information may be a flag. If the flag is 0, the EDT is retransmitted, and the retransmitted TBS size is adaptively selected by the UE.
  • the EDT retransmission is indicated, and the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index For the other 11 of the 12 MCS values except the A value, then the EDT Msg3 is instructed to fall back to the legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the indicated MCS index.
  • the terminal device when the terminal device is in the coverage enhancement level 2, the coverage enhancement level 3, or the coverage enhancement mode B, when the bit status of the indication information is 0, the length of the resource allocation field of the first downlink control information is Bit.
  • the first downlink control information includes 6 bits, and the 6 bits indicate 64 states, where the 64 states are used to indicate a combination of a modulation coding mode and a narrowband intraband resource allocation.
  • the index value of the coding mode includes eight types of Q to (Q+6) and S, and the index value of the modulation and coding mode is one of Q to (Q+6).
  • the terminal device transmits the first message 3.
  • the index value of the modulation and coding mode is S
  • the existing MCS state can be limited from 11 to 8 types, and the state of resource allocation in the narrowband is still maintained at 8 types.
  • the in-band resources are allocated 3 bits, and the embodiment of the present application saves 1 bit.
  • the saved 1 bit is used as the indication information, for example, the indication information may be flag. If the flag is 0, the EDT is retransmitted, and the retransmitted TBS size is adaptively selected by the UE.
  • the EDT retransmission is indicated, and the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index It is the other 7 of the 8 MCS values, then the EDT Msg3 is instructed to fall back to legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the MCS index.
  • the terminal device transmits the first data according to the scheduling information and the indication information.
  • the scheduling information in the first downlink control information indicates a scheduling manner of the first data
  • the indication information in the first downlink control information indicates whether the first data to be transmitted is the first message 3 or the first The second message 3, so the terminal device can transmit the first data by using the scheduling information and the indication information, for example, the terminal device transmits the first data through the wireless network. For example, if the indication information indicates that the first data is the first message 3, the terminal device may send the first message 3 based on the scheduling information received this time. If the indication information indicates that the first data is the second message 3, the terminal The device may send the second message 3 based on the scheduling information received this time.
  • the terminal device receives the first downlink control information, where the first downlink control information includes scheduling information of the first data transmission by the terminal device, and the second downlink control information includes the second terminal transmission information.
  • the scheduling information of the data, and the first downlink control information includes the indication information, and the second downlink control information does not include the indication information, and the format of the first downlink control information is the same as the format of the second downlink control information,
  • the indication information in the downlink control information may indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3.
  • the first downlink control information for each transmission in the embodiment of the present application may determine, by using the indication information, that the first data to be transmitted is the first message 3 or the second message 3, and the maximum number of HARQs for the network configuration is not required to be transmitted. The number of transmissions, so it can be determined whether to fall back from transmitting the second message 3 to transmitting the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the embodiment of the present application Provide a method of information transmission, including:
  • the network device sends first downlink control information, where the first downlink control information includes scheduling information that the terminal device transmits the first data.
  • the first downlink control information includes indication information, where the indication information is used to indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3, where the first message 3 is the message 3 that does not carry the user data, and the second message 3 is a message 3 carrying user data; the bit length of the indication information is 1 bit; the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes a scheduling for the terminal device to transmit the second data.
  • Information, and the second downlink control information does not include indication information.
  • the first downlink control information may include, in addition to the scheduling information, indication information of the first data, where the indication information is used to indicate that the first data transmitted by the terminal device is the first message 3 or the second. Message 3, indicating that the bit length of the information is 1 bit.
  • the first message 3 may be a message 3 carrying user data
  • the second message 3 may be a message 3 carrying user data
  • the transmission used by the first message 3 is transmitted.
  • the block size TBS is the TBS used by the terminal device in the initial message 3 transmission
  • the TBS used for the second message 3 transmission is the TBS configured by the network device.
  • the network device may schedule the terminal device to transmit the message 3 carrying the user data according to the TBS configured by the network device in the retransmission scheduling, so that the base station does not need to perform blind detection when receiving the message 3 carrying the user data, thereby reducing the network device. the complexity.
  • the terminal device is in coverage enhancement level 0, coverage enhancement level 1, or coverage enhancement mode A;
  • the first downlink control information further includes a first resource allocation field, where the first resource allocation field includes at least Bit, where the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth.
  • the 4 bits in the first resource allocation field indicate the resource block allocation in the narrowband corresponding to the narrowband index
  • the second downlink control information further includes a second resource allocation field, where the second resource allocation field includes at least Bit, where the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation in a narrowband corresponding to the narrowband index;
  • the first downlink control information further includes a first modulation and coding mode field, where a bit length of the first modulation and coding mode field is H bits
  • the second downlink control information further includes a second modulation and coding mode field, and the second modulation and coding
  • the bit length of the mode field is H+1 bits
  • H is a positive integer greater than or equal to 1.
  • the value of H may be 3 bits, and H+1 is 4 bits.
  • the first downlink control information does not include a Channel State Information (CSI) request field
  • the second downlink control information includes a CSI request field
  • the first downlink control information does not include a Sounding Reference Signal (SRS) request field
  • the second downlink control information includes an SRS request field.
  • SRS Sounding Reference Signal
  • the terminal device is in the coverage enhancement (CE) level of the connected mode, and the CE level0/1/2/3 is the coverage enhancement level of the idle state.
  • the ModeA corresponds to the CE level 0/1.
  • ModeB corresponds to CE level 2/3.
  • the first downlink control information when the terminal device is in the coverage enhancement level 0, the coverage enhancement level 1, or the coverage enhancement mode A, the first downlink control information further includes a first resource allocation field, for example, the first resource.
  • the allocation field may be Resource allocation in DCI Format6-0A, and the first resource allocation field includes at least Bit, Indicates the number of physical resource blocks (PRBs) included in the system bandwidth. Means rounding down, Indicates an up rounding operation.
  • PRBs physical resource blocks
  • Means rounding down Indicates an up rounding operation.
  • the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and 4 bits in the first resource allocation field indicate resource block allocation within a narrowband corresponding to the narrowband index.
  • the second downlink control information further includes a second resource allocation field, where the second resource allocation field includes at least Bit, where the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation within a narrowband corresponding to the narrowband index.
  • the first resource allocation field in the first downlink control information is one bit smaller than the second resource allocation field in the second downlink control information, and the reduced one bit is used for the first downlink control information.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink control information is used in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the support supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the first downlink control information further includes a first modulation and coding mode field, for example, the first modulation and coding mode field is an MCS in DCI Format6-0A, and a bit length of the first modulation and coding mode field.
  • the H-bit, the second downlink control information further includes a second modulation and coding mode field, the bit length of the second modulation and coding mode field is H+1 bits, and H is a positive integer greater than or equal to 1.
  • the first modulation coding mode field in the first downlink control information is one bit less than the second modulation coding mode field in the second downlink control information, and the reduced one bit is used for the first downlink.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink is adopted in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the control information supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the first downlink control information does not include a CSI request field
  • the second downlink control information includes a CSI request field.
  • the CSI request field may be a CSI request in DCI Format6-0A. Therefore, the first downlink control information is compared with the second downlink control information, and the reduced CSI request field is used for the indication information in the first downlink control information, and the first downlink control information and the second The downlink control information has the same format.
  • the indication information in the first downlink control information is used to support the early fallback to the first message 3, without additionally increasing the overhead of the first downlink control information. Thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the base station when the base station is scheduling the second message 3 or the first message 3, the base station does not schedule the CSI to be reported by the UE, and therefore may not include the CSI in the first downlink control information, and uses the CSI request in the DCI Format 6-0A.
  • the field is used as the indication information, and the indication information may indicate that the second message 3 is sent or is rolled back to the first message 3.
  • the indication information may be used to perform retransmission of the EDT Msg3 or fall back to the legacy Msg3.
  • the first downlink control information does not include an SRS request field
  • the second downlink control information includes an SRS request field
  • the CSI request field may be an SRS request in DCI Format6-0A. Therefore, the first downlink control information is reduced by the SRS request field compared to the second downlink control information, and the reduced SRS request field is used for the indication information in the first downlink control information, the first downlink control information and the second
  • the downlink control information has the same format.
  • the indication information in the first downlink control information is used to support the early fallback to the first message 3, without additionally increasing the overhead of the first downlink control information. Thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the base station does not schedule the UE to send the SRS, so the SRS may not be included in the first downlink control information, and the SRS request field in the DCI Format 6-0A is used as the The indication information is used to indicate retransmission of EDT Msg3 or fallback to legacy Msg3 using the SRS request field in DCI Format 6-0A.
  • the terminal device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, where a bit length of the first modulation and coding mode field is T bits
  • the second downlink control information further includes a second modulation and coding mode field, and a bit of the second modulation and coding mode field
  • T is a positive integer greater than or equal to 1.
  • the value of T may be 3 bits
  • the value of T+1 may be 4 bits.
  • the first modulation and coding mode field is an MCS in the DCI Format6-0B, and the bit length of the first modulation and coding mode field is T bits, and the second downlink control information further includes a second modulation and coding mode field, and the second modulation and coding mode.
  • the bit length of the field is T+1 bits.
  • the first modulation coding mode field in the first downlink control information is one bit less than the second modulation coding mode field in the second downlink control information, and the reduced one bit is used for the first downlink.
  • the first downlink control information and the second downlink control information have the same format, and the first downlink is adopted in the embodiment of the present application, without additionally adding the overhead of the first downlink control information.
  • the indication information in the control information supports early fallback to the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the terminal device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, where the indication information is carried by the first modulation and coding mode field, the bit length of the first modulation and coding mode field is 4 bits, and the bit state of the first modulation and coding mode field is 0000.
  • the first data transmitted by the terminal device is the first message 3.
  • the bit state of the first modulation and coding mode field is in the state of 1011 to 1111, the first data transmitted by the terminal device is the second message 3. .
  • the first modulation and coding mode field is a Modulation and coding scheme in DCI Format6-0B, and has 4 bits.
  • the indication information in the first downlink control information is carried by the first modulation and coding mode field.
  • the bit length of the first modulation and coding mode field is 4 bits, and the bit state of the first modulation and coding mode field is the state of 0000 to 1010.
  • the first data transmitted by the terminal device may be indicated by the state of 0000 to 1010 as the first message 3, and the bit status indicates the transport block size of the first message 3.
  • the bit state of the first modulation and coding mode field is in the state of 1011 to 1111
  • the first data transmitted by the terminal device may be indicated by the state of 0000 to 1010 as the second message 3.
  • the preset state 1111, the preset state 1110, or the preset state 1011 indicates that the first data transmitted by the terminal device is the second message 3.
  • the indication information in the first downlink control information is carried by the first modulation and coding mode field, and the first downlink control information and the second downlink control information have the same format, without adding an additional first
  • the indication information in the first downlink control information is used to support the rollback to the first message 3 in advance, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the terminal device when the bit status of the indication information is the first bit status, the terminal device sends the second message 3 according to the first TBS, and when the bit status of the indication information is the second bit status, the terminal device sends the a message 3 or the terminal device sends the second message 3 according to the second TBS; or
  • the terminal device When the bit state of the indication information is the first bit state, the terminal device sends the second message 3 according to the second TBS, indicating that the bit state of the information is the second bit state, the terminal device sends the first message 3 or the terminal device according to the first TBS Send a second message 3;
  • the first TBS is a TBS determined according to the second TBS
  • the second TBS is a TBS configured by the network device.
  • the TBS determined by the first TBS according to the second TBS may include the following process: in the process of the EDT, the network device configures a maximum TBS, that is, a second TBS, by using a system message for each coverage enhancement level/mode. The network device may also enable the UE to select a preset TBS value corresponding to the maximum TBS corresponding to the maximum TBS, that is, select a first TBS that is less than or equal to the second TBS.
  • the network device If the network device enables the UE to select a preset TBS value corresponding to the maximum TBS that is less than or equal to the maximum TBS, the network device needs to blindly detect the TBS value used by the UE when decoding, and if the network device does not enable the UE to select the preset.
  • the maximum TBS corresponds to a TBS value that is less than or equal to the maximum TBS, and the UE transmits the Msg3 including the user data according to the first TBS according to the maximum TBS configured by the network device.
  • the second TBS may be the maximum TBS configured by the network device, and the bit status of the indication information may be two types: a first bit state and a second bit state, for example, the first bit state may be 0, and the second bit state may be Is 1. Alternatively, the first bit state may be 1 and the second bit state may be 0.
  • the second message 3 carries the user data.
  • the terminal device sends the second message 3 according to the first TBS, for example, the first TBS is less than or equal to the maximum transmission configured by the network device. Block size.
  • the terminal device sends the first message 3 or the terminal device sends the second message 3 according to the second TBS, that is, when the terminal device is in the second bit state according to the bit state of the indication information
  • the second message 3 is returned from the transmission of the second message 3 to the first message 3, or may be transmitted in accordance with the TBS (ie, the second TBS) configured by the network device.
  • the TBS ie, the second TBS
  • the terminal may be instructed whether to perform EDT fallback, that is, to fall back from the EDT Msg3 to the Msg3 of the leadcy, without retransmitting the random indication for the leadcy Msg3 after the terminal device performs multiple HARQ repeated transmissions.
  • EDT fallback that is, to fall back from the EDT Msg3 to the Msg3 of the leadcy
  • the base station Accessing the preamble sequence, the base station schedules leadcy Msg3 according to the sent random access preamble sequence, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the resource allocation field of the first downlink control information includes at least Bit, where the resource allocation field The bit indicates a narrowband index on the uplink bandwidth, and the X bit in the resource allocation field indicates resource allocation in the narrowband;
  • the resource allocation field of the first downlink control information includes at least Bit, in the resource allocation field The bit indicates a narrowband index on the uplink bandwidth, and the first downlink control information further includes a Y bit, and each of the M ⁇ L states of the Y bit indicates that the first data transmitted by the terminal device is the first message 3, And each of the M ⁇ L states of the Y bits indicates a modulation coding mode and a resource allocation in a narrowband, wherein the resource allocation in the narrowband has a total of M resource allocation modes, and the modulation coding mode has a total of L indexes, M and L.
  • the states other than the M ⁇ L state in the Y bit indicate that the first data transmitted by the terminal device is the second message 3.
  • the length of the resource allocation field of the first downlink control information is Bit.
  • the first downlink control information includes 8 bits, and the 8 bits indicate 256 states, and 252 of the 256 states are used to indicate modulation coding mode and narrowband resource allocation.
  • the combination of the intra-narrowband resource allocation includes 21 types, and the index value of the coding mode includes 12 types of K ⁇ (K+10) and M, when the bit status indicates that the index value of the modulation and coding mode is K.
  • the terminal device When the terminal device transmits the first message 3 to a value of (K+10), or the index value of the modulation and coding mode is M, the terminal device transmits the second message 3, where K and M are Integer. For example, K is 0 and M is 11.
  • Joint coding requires 8 bits.
  • the resources in the narrowband are allocated 5 bits, that is, 9 bits in the prior art.
  • the MCS and the resource allocation are jointly encoded and only need 8 bits, so Save 1 bit.
  • the saved 1 bit is used as the indication information, for example, the indication information may be a flag. If the flag is 0, the EDT is retransmitted, and the retransmitted TBS size is adaptively selected by the UE.
  • the EDT retransmission is indicated, and the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index For the other 11 of the 12 MCS values except the A value, then the EDT Msg3 is instructed to fall back to the legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the indicated MCS index.
  • the terminal device when the terminal device is in the coverage enhancement level 2, the coverage enhancement level 3, or the coverage enhancement mode B, when the bit status of the indication information is 0, the length of the resource allocation field of the first downlink control information is Bit.
  • the first downlink control information includes 6 bits, and the 6 bits indicate 64 states, where the 64 states are used to indicate a combination of a modulation coding mode and a narrowband intraband resource allocation.
  • the index value of the coding mode includes eight types of Q to (Q+6) and S, and the index value of the modulation and coding mode is one of Q to (Q+6).
  • the terminal device transmits the first message 3.
  • the index value of the modulation and coding mode is S
  • the existing MCS state can be limited from 11 to 8 types, and the state of resource allocation in the narrowband is still maintained at 8 types.
  • the in-band resources are allocated 3 bits, and the embodiment of the present application saves 1 bit.
  • the saved 1 bit is used as the indication information, for example, the indication information may be flag. If the flag is 0, the EDT is retransmitted, and the retransmitted TBS size is adaptively selected by the UE.
  • the EDT retransmission is indicated, and the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index It is the other 7 of the 8 MCS values, then the EDT Msg3 is instructed to fall back to legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the MCS index.
  • the network device receives the first data transmitted by the terminal device.
  • the terminal device transmits the first data according to the scheduling information and the indication information, and the network device may receive the first data sent by the terminal device according to the scheduling information. For example, if the indication information indicates that the first data is the first message 3, the terminal device may send the first message 3 based on the scheduling information received this time, and the network device may receive the first message 3 sent by the terminal device. If the indication information indicates that the first data is the second message 3, the terminal device may send the second message 3 based on the scheduling information received this time, and the network device may receive the second message 3 sent by the terminal device.
  • the terminal device receives the first downlink control information, where the first downlink control information includes scheduling information of the first data transmission by the terminal device, and the second downlink control information includes the second terminal transmission information.
  • the scheduling information of the data, and the first downlink control information includes the indication information, and the second downlink control information does not include the indication information, and the format of the first downlink control information is the same as the format of the second downlink control information,
  • the indication information in the downlink control information may indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3.
  • the first downlink control information for each transmission in the embodiment of the present application may determine, by using the indication information, that the first data to be transmitted is the first message 3 or the second message 3, and the maximum number of HARQs for the network configuration is not required to be transmitted. The number of transmissions, so it can be determined whether to fall back from transmitting the second message 3 to transmitting the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • Another information transmission method implemented by the terminal device and the network device provided by the embodiment of the present application includes:
  • the network device sends downlink control information.
  • the downlink control information includes scheduling information that the terminal device transmits the first data.
  • the network device sends the downlink control information, where the downlink control information includes scheduling information, where the scheduling information is used to schedule the first data to be transmitted by the terminal device, where the first data refers to the transmission by the terminal device.
  • Message 3 refers to the third message in the random access process, and the message 3 can carry user data.
  • Message 3 can support data advance transmission.
  • a plurality of messages that can be sent by the terminal device can be respectively configured with corresponding resources.
  • the message 3 in the random access process can be divided into two different types, for example, the first message 3 and the second message 3. Therefore, the terminal device can send two different messages 3, and the network device can send different messages 3 Configure the corresponding resources separately.
  • the first message 3 is a message 3 that does not carry user data
  • the second message 3 is a message 3 that carries user data
  • the first message 3 may be a normal message 3 transmission, and for example, the first message 3 may be a message 3 that does not perform data transmission in advance.
  • the second message 3 is a message 3 for data transmission in advance.
  • the data here can be the service data of the terminal device.
  • the terminal device receives downlink control information, where the downlink control information includes scheduling information that the terminal device transmits the first data.
  • the terminal device first receives the downlink control information that is sent by the network device, where the downlink control information includes scheduling information, where the scheduling information is used to schedule the first data to be transmitted by the terminal device, where the first data is Refers to the message transmitted by the terminal device.
  • Message 3 refers to the third message in the random access process, and the message 3 can carry user data.
  • Message 3 can support data advance transmission.
  • the corresponding resources can be separately configured for various messages that the terminal device can send.
  • the message 3 in the random access process can be divided into two different types, for example, the first message 3 and the second message 3. Therefore, the terminal device can send two different messages 3, and the network device can send different messages 3 Configure the corresponding resources separately.
  • the first message 3 is a message 3 that does not carry user data
  • the second message 3 is a message 3 that carries user data
  • the first message 3 may be a normal message 3 transmission, and for example, the first message 3 may be a message 3 that does not perform data transmission in advance.
  • the second message 3 is a message 3 for data transmission in advance.
  • the data here can be the service data of the terminal device.
  • the terminal device determines, according to the downlink control information, a first transport block size TBS.
  • Step 504 and step 505 are triggered when the first TBS is less than or equal to the second TBS, and steps 506 and 507 are triggered when the first TBS is greater than the second TBS.
  • the first data transmitted by the terminal device is the first message 3.
  • the network device receives the first message 3 transmitted by the terminal device.
  • the first data transmitted by the terminal device is the second message 3.
  • the network device receives the second message 3 transmitted by the terminal device.
  • the second TBS is a preset transport block size, or a transport block size configured by system information, or a transport block size configured by radio resource control signaling.
  • the terminal device determines a first transport block size TBS according to the downlink control information; when the first TBS is less than or equal to the second TBS, the terminal device sends the first message 3, when the first TBS The second TBS is greater than the second TBS, and the second TBS is the preset transport block size, the transport block size of the system message broadcast, or the transport block size of the mobile control message broadcast.
  • the network device may indicate to the terminal device that the type of the first data is the first message 3 or the second message 3 by means of an implicit indication.
  • the network device may indicate, by using a transport block size (TBS), determining the type of the first data according to the first TBS configured by the network device in the DCI and the preset second TBS, where the second TBS It may be a system message transmitted by the network device or a TBS of the mobile control message broadcast, or the second TBS may be a preset TBS. If the first TBS is less than or equal to the second TBS, fall back to legacy Msg3. Otherwise, transmit EDT Msg3.
  • TBS transport block size
  • the TBS that is carried in the downlink control information may be used to determine whether the first data to be transmitted is the first message 3 or the second message 3, and the number of transmissions does not need to reach the maximum number of HARQ retransmissions configured by the network, so it is determined whether Falling back from transmitting the second message 3 to transmitting the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the UE when the number of HARQ retransmissions of Msg3 is maximized and the base station still fails to decode correctly, the UE needs to return to the first step, that is, retransmit the preamble sequence. If the UE wants to roll back to the legacy legacy Msg3 according to the existing standard, the UE needs to repeat the number of repeated transmissions to reach the maximum number of HARQ retransmissions before re-selecting the PRACH resource for indicating legacy Msg3 for legacy random access. In the existing standard, the UE needs to reach the maximum number of HARQ retransmissions from the EDT Msg3 to the legacy Msg 3, with large delay and high power consumption.
  • the DCI Format 6-0A/B is used when the number of UE transmissions does not reach the maximum number of HARQ retransmissions configured by the network. EDT Msg3 falls back to the transport legacy Msg3, which reduces the backoff delay and saves UE power consumption.
  • a new bit indicating the allocation of the sub-PRB resource is used to indicate the EDT fallback.
  • the state of the preset MCS is used to indicate the fallback of the EDT, and the Mode B utilizes the unused state.
  • the rollback is implicitly indicated according to the TBS comparison of the TBS configured in the DCI and the preset/system message/mobile control message broadcast.
  • the network element involved in the embodiment of the present invention includes: a base station and a UE, and the base station is an entity on the network side for transmitting or receiving a signal.
  • the UE can be any terminal.
  • the UE is a user equipment for machine type communication.
  • only use Bit which is high
  • the bit indicates the narrowband index on the system bandwidth; for the legacy Msg3 initial transmission schedule, the lower 4 bits indicate the scheduling of 1, 2, 3 or 6 PRBs in the narrowband; for the EDT Msg3 initial transmission schedule, the lower 4 bits indicate 2 in the narrowband , 3, 4, 5 or 6 PRB scheduling. Therefore, the remaining 1 bit of the resource allocation field is unused.
  • the DCI is the retransmission scheduling information of EDT Msg3;
  • the DCI is the scheduling information of legacy Msg3.
  • the MCS ranges from 0 to 7; when the EDT Msg3 is scheduled, the MCS does not need to be indicated (the TBS with the largest network configuration, and the UE adopts the largest The TBS or a preset set corresponding to the largest TBS selects one TBS for transmitting EDT Msg3, and the base station receives blind detection TBS). Therefore, the state of the preset MCS is used to indicate the fallback of the EDT, and the MCS index: 0 to 7 indicates the backoff; and the MCS index: 8 to 15 indicates the EDT retransmission schedule.
  • the resource allocation field adds 2 or 3 bits. Therefore, a new bit for indicating the sub-PRB resource allocation can be used to indicate whether the EDT is rolled back or not.
  • the base station since the base station is scheduling EDT Msg3 or legacy Msg 3, the base station does not schedule the UE to report channel state information (CSI), and uses the CSI field in the DCI Format 6-0A to indicate the EDT Msg3. Retransmit or fall back to legacy Msg3.
  • CSI channel state information
  • the base station since the base station is scheduling EDT Msg3 or legacy Msg 3, the base station does not schedule the UE to transmit a Sounding Reference Signal (SRS), and indicates the EDT Msg3 by using the SRS request field in the DCI Format 6-0A. Retransmission or fallback to legacy Msg3.
  • SRS Sounding Reference Signal
  • the in-band resources are allocated 5 bits, saving 1 bit. Use the saved 1 bit as the flag. If the flag is 0, indicating EDT retransmission, and the retransmitted TBS size is adaptively selected by the UE; if the flag is 1, and the indicated MCS index is a predefined A value, then the EDT retransmission is indicated at this time.
  • the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index is another 11 of the 12 MCS values, then the EDT Msg3 is instructed to fall back to the legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the MCS index.
  • the memory of the base station and the UE side needs to store a preset state of the MCS for indicating the backoff.
  • the base station and the UE side need to perform the comparison and decision processes of Embodiments 1 to 3. Supports early fallback to legacy Msg3 without any additional DCI overhead, reducing latency and saving power.
  • the MCS since the MCS only supports 0 to 10, there are 5 MCS states unused in the existing standard, and one or some of the 5 unused MCS states are used to indicate the fallback of the EDT.
  • the resource allocation field adds 2 or 3 bits. Therefore, a new bit for indicating the sub-PRB resource allocation can be used to indicate whether the EDT is rolled back or not.
  • the existing MCS state is limited from 11 to 8 types, and the state of resource allocation in the narrowband is still maintained at 8 types.
  • the intra-narrowband resources are allocated 3 bits, saving 1 bit. Use the saved 1 bit as the flag. If the flag is 0, indicating EDT retransmission, and the retransmitted TBS size is adaptively selected by the UE; if the flag is 1, and the indicated MCS index is a predefined B value, then the EDT retransmission is indicated at this time.
  • the retransmitted TBS is the maximum TBS configured by the network device; if the flag is 1, and the indicated MCS index is another 7 of the 8 MCS values, then the EDT Msg3 is instructed to fall back to the legacy Msg3. At this time, the transport block size of legacy Msg3 is determined according to the MCS index.
  • the memory of the base station and the UE side needs to store the state of the MCS for indicating the fallback; the base station and the UE side need to perform the comparison and decision process.
  • the terminal device 600 includes:
  • the receiving module 601 is configured to receive first downlink control information, where the first downlink control information includes scheduling information that the terminal device transmits the first data.
  • the processing module 602 is configured to obtain the indication information in the first downlink control information, where the indication information is used to indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3, where the The first message 3 is a message 3 not carrying user data, the second message 3 is a message 3 carrying user data; or the first message 3 is a message 3 carrying user data, and the second message 3 is Message 3 carrying user data, and the transport block size TBS used for the transmission of the first message 3 is the TBS used by the communication device in the initial message 3 transmission, and the TBS used for the second message 3 transmission is the network device configuration. TBS;
  • the bit length of the indication information is 1 bit; the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes scheduling information that the terminal device transmits the second data. And the second downlink control information does not include the indication information;
  • the sending module 603 is configured to transmit the first data according to the scheduling information and the indication information.
  • the network device 700 includes:
  • the processing module 702 is configured to send the first downlink control information by using the sending module 701, where the first downlink control information includes scheduling information that the terminal device transmits the first data.
  • the first downlink control information includes indication information, where the indication information is used to indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3, where the first message 3 is not carrying a user.
  • the second message 3 is a message 3 carrying user data; or the first message 3 is a message 3 carrying user data, and the second message 3 is a message 3 carrying user data
  • the transport block size TBS used for the transmission of the first message 3 is the TBS used by the communication device in the initial message 3 transmission, and the TBS used for the second message 3 transmission is the TBS configured by the network device;
  • the bit length of the indication information is 1 bit; the format of the first downlink control information is the same as the format of the second downlink control information, and the second downlink control information includes scheduling information that the terminal device transmits the second data. And the second downlink control information does not include the indication information;
  • the processing module 702 is configured to receive, by the receiving module 703, the first data that is transmitted by the terminal device.
  • the terminal device is in coverage enhancement level 0, coverage enhancement level 1, or coverage enhancement mode A;
  • the first downlink control information further includes a first resource allocation field, where the first resource allocation field includes at least a bit, wherein the first resource allocation field The bit indicates a narrowband index in the uplink bandwidth, the 4 bits in the first resource allocation field indicate a resource block allocation in a narrowband corresponding to the narrowband index, and the second downlink control information further includes a second resource allocation field, where The second resource allocation field includes at least a bit in the second resource allocation field The bit indicates a narrowband index in the uplink bandwidth, and the 5 bits in the second resource allocation field indicate resource block allocation in a narrowband corresponding to the narrowband index;
  • the first downlink control information further includes a first modulation and coding mode field, where a bit length of the first modulation and coding mode field is H bits, and the second downlink control information further includes a second modulation and coding mode.
  • a field, the bit length of the second modulation and coding mode field is H+1 bits, and the H is a positive integer greater than or equal to 1;
  • the first downlink control information does not include a channel state information CSI request field, and the second downlink control information includes a CSI request field;
  • the first downlink control information does not include a sounding reference signal SRS request field
  • the second downlink control information includes the SRS request field
  • the terminal device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, the bit length of the first modulation and coding mode field is T bits, and the second downlink control information further includes a second modulation and coding mode field, where The bit length of the second modulation coding mode field is T+1 bits, and the T is a positive integer greater than or equal to 1.
  • the terminal device is in coverage enhancement level 2, coverage enhancement level 3, or coverage enhancement mode B;
  • the first downlink control information further includes a first modulation and coding mode field, where the indication information is carried by the first modulation and coding mode field, and a bit length of the first modulation and coding mode field is 4 bits, where the When the bit state of a modulation and coding mode field is a state of 0000 to 1010, the first data transmitted by the terminal device is the first message 3, and the bit state of the first modulation and coding mode field is 1011 ⁇ In the state in 1111, the first data transmitted by the terminal device is the second message 3.
  • the terminal device When the bit state of the indication information is the first bit state, the terminal device sends the second message 3 according to the first TBS, and when the bit state of the indication information is the second bit state, the terminal device sends the location The first message 3 or the terminal device sends the second message 3 according to the second TBS; or
  • the terminal device When the bit state of the indication information is the first bit state, the terminal device sends the second message 3 according to the second TBS, and when the bit state of the indication information is the second bit state, the terminal device sends the location The first message 3 or the terminal device sends the second message 3 according to the first TBS;
  • the first TBS is a TBS determined according to the second TBS
  • the second TBS is a TBS configured by a network device.
  • the resource allocation field of the first downlink control information includes at least a bit in the resource allocation field The bit indicates a narrowband index on the upstream bandwidth, and the X bits in the resource allocation field indicate resource allocation within the narrowband;
  • the resource allocation field of the first downlink control information includes at least Bit in the resource allocation field
  • the bit indicates a narrowband index on the uplink bandwidth
  • the first downlink control information further includes a Y bit
  • each of the M ⁇ L states of the Y bit indicates the first transmission by the terminal device
  • One data is the first message 3
  • each of the M ⁇ L states of the Y bits indicates a modulation coding mode and a narrowband intraband resource allocation, wherein the narrowband intraband resource allocation has a total of M resources.
  • the modulation coding mode has a total of L types of indexes, and the M and L are positive integers, and one or more states of the Y bits other than the M ⁇ L states indicate The first data transmitted by the terminal device is the second message 3.
  • the format of the first downlink control information is downlink control information DCI format format 6-0A; or
  • the format of the first downlink control information is DCI format 6-0B.
  • the terminal device receives the first downlink control information, where the first downlink control information includes scheduling information of the first data transmission by the terminal device, and the second downlink control information includes the second terminal transmission information.
  • the scheduling information of the data, and the first downlink control information includes the indication information, and the second downlink control information does not include the indication information, and the format of the first downlink control information is the same as the format of the second downlink control information,
  • the indication information in the downlink control information may indicate that the first data transmitted by the terminal device is the first message 3 or the second message 3.
  • the first downlink control information for each transmission in the embodiment of the present application may determine, by using the indication information, that the first data to be transmitted is the first message 3 or the second message 3, and the maximum number of HARQs for the network configuration is not required to be transmitted. The number of transmissions, so it can be determined whether to fall back from transmitting the second message 3 to transmitting the first message 3, thereby reducing the backoff delay and saving power consumption of the terminal device.
  • the embodiment of the present application further provides a network device, including: a sending module and a receiving module, where
  • the sending module is configured to send downlink control information.
  • the downlink control information includes scheduling information that the terminal device transmits the first data.
  • the network device sends the downlink control information, where the downlink control information includes scheduling information, where the scheduling information is used to schedule the first data to be transmitted by the terminal device, where the first data refers to the transmission by the terminal device.
  • Message 3 refers to the third message in the random access process, and the message 3 can carry user data.
  • Message 3 can support data advance transmission.
  • a plurality of messages that can be sent by the terminal device can be respectively configured with corresponding resources.
  • the message 3 in the random access process can be divided into two different types, for example, the first message 3 and the second message 3. Therefore, the terminal device can send two different messages 3, and the network device can send different messages 3 Configure the corresponding resources separately.
  • the first message 3 is a message 3 that does not carry user data
  • the second message 3 is a message 3 that carries user data.
  • the first message 3 may be a normal message 3 transmission, and for example, the first message 3 may be a message 3 that does not perform data transmission in advance.
  • the second message 3 is a message 3 for data transmission in advance.
  • the data here can be the service data of the terminal device.
  • the first message 3 is a message 3 carrying user data
  • the second message 3 is a message 3 carrying user data
  • the transport block size TBS used for the transmission of the first message 3 is that the communication device is
  • the TBS used for the transmission of the second message 3 is a TBS configured by the network device.
  • the receiving module is configured to receive the first message 3 transmitted by the terminal device when the first TBS is less than or equal to the second TBS. When the first TBS is greater than the second TBS, the second message 3 transmitted by the terminal device is received.
  • the second TBS is a preset transport block size, or a transport block size configured by system information, or a transport block size configured by radio resource control signaling.
  • the embodiment of the present application further provides a terminal device, including: a receiving module, a processing module, and a sending module, where
  • the receiving module is configured to receive downlink control information, where the downlink control information includes scheduling information that the terminal device transmits the first data.
  • the terminal device first receives the downlink control information that is sent by the network device, where the downlink control information includes scheduling information, where the scheduling information is used to schedule the first data to be transmitted by the terminal device, where the first data is Refers to the message transmitted by the terminal device.
  • Message 3 refers to the third message in the random access process, and the message 3 can carry user data.
  • Message 3 can support data advance transmission.
  • the corresponding resources can be separately configured for various messages that the terminal device can send.
  • the message 3 in the random access process can be divided into two different types, for example, the first message 3 and the second message 3. Therefore, the terminal device can send two different messages 3, and the network device can send different messages 3 Configure the corresponding resources separately.
  • the first message 3 is a message 3 that does not carry user data
  • the second message 3 is a message 3 that carries user data.
  • the first message 3 may be a normal message 3 transmission, and for example, the first message 3 may be a message 3 that does not perform data transmission in advance.
  • the second message 3 is a message 3 for data transmission in advance.
  • the data here can be the service data of the terminal device.
  • the first message 3 is a message 3 carrying user data
  • the second message 3 is a message 3 carrying user data
  • the transport block size TBS used for the transmission of the first message 3 is that the communication device is
  • the TBS used for the transmission of the second message 3 is a TBS configured by the network device.
  • a processing module configured to determine a first transport block size TBS according to the downlink control information.
  • the sending module is configured to transmit the first data when the first TBS is less than or equal to the second TBS, where the first data is the first message 3. When the first TBS is greater than the second TBS, transmitting the first data is the second message 3.
  • the second TBS is a preset transport block size, or a transport block size configured by system information, or a transport block size configured by radio resource control signaling.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes some or all of the steps described in the foregoing method embodiments.
  • FIG. 8 is a schematic structural diagram of still another device according to an embodiment of the present application.
  • the device is a terminal device, and the terminal device may include: a processor 131 (eg, a CPU), a memory 132, a transmitter 134, and a receiver 133.
  • the transmitter 134 and the receiver 133 are coupled to the processor 131, which controls the transmitting action of the transmitter 134 and the receiving action of the receiver 133.
  • the memory 132 may include a high speed RAM memory, and may also include a non-volatile memory NVM, such as at least one disk memory, in which various instructions may be stored for performing various processing functions and implementing the methods of embodiments of the present application. step.
  • the terminal device involved in the embodiment of the present application may further include one or more of a power source 135, a communication bus 136, and a communication port 137.
  • the receiver 133 and the transmitter 134 may be integrated in the transceiver of the terminal device, or may be separate receiving and transmitting antennas on the terminal device.
  • Communication bus 136 is used to implement a communication connection between components.
  • the communication port 137 is used to implement connection communication between the terminal device and other peripheral devices.
  • the foregoing memory 132 is configured to store computer executable program code, and the program code includes instructions.
  • the instruction causes the processor 131 to perform the processing action of the terminal device in the foregoing method embodiment, so that The transmitter 134 performs the sending operation of the terminal device in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 9 is a schematic structural diagram of still another device according to an embodiment of the present application.
  • the device is a network device, and the network device may include: a processor (eg, a CPU) 141, a memory 142, a receiver 143, and a transmitter 144.
  • the receiver 143 and the transmitter 144 are coupled to the processor 141, which controls the receiving action of the receiver 143 and the transmitting action of the transmitter 144.
  • the memory 142 may include a high speed RAM memory, and may also include a non-volatile memory NVM, such as at least one disk memory, in which various instructions may be stored for performing various processing functions and implementing the methods of embodiments of the present application. step.
  • NVM non-volatile memory
  • the network device involved in the embodiment of the present application may further include one or more of a power source 145, a communication bus 146, and a communication port 147.
  • the receiver 143 and the transmitter 144 may be integrated in a transceiver of the network device, or may be separate receiving and transmitting antennas on the network device.
  • Communication bus 146 is used to implement a communication connection between components.
  • the communication port 147 is used to implement connection communication between the network device and other peripheral devices.
  • the memory 142 is used to store computer executable program code, and the program code includes instructions.
  • the instruction causes the processor 141 to perform the processing action of the network device in the foregoing method embodiment, so that The transmitter 144 performs the sending action of the network device in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the chip comprises: a processing unit and a communication unit
  • the processing unit may be, for example, a processor
  • the communication unit may be, for example, an input/output interface, Pin or circuit, etc.
  • the processing unit may execute computer execution instructions stored by the storage unit to cause the chip within the terminal to perform the wireless communication method of any of the above aspects.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (read) -only memory, ROM) or other types of static storage devices, random access memory (RAM), etc. that can store static information and instructions.
  • the processor mentioned in any of the above may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the integrated circuit of the program execution of the first aspect wireless communication method may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the device embodiments described above are merely illustrative, wherein 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 can be located in one place or distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, and specifically may be implemented as one or more communication buses or signal lines.
  • U disk mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., including a number of instructions to make a computer device (may be A personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present application.
  • a computer device may be A personal computer, server, or network device, etc.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • wire eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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Abstract

一种信息传输方法和通信设备以及网络设备，一种信息传输方法，包括：通信设备接收第一下行控制信息，所述第一下行控制信息包括所述通信设备传输第一数据的调度信息；所述通信设备获取所述第一下行控制信息中的指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3；所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；所述通信设备根据所述调度信息和所述指示信息传输所述第一数据。

Description

一种信息传输方法和通信设备以及网络设备 技术领域
本申请实施例涉及通信领域，尤其涉及一种信息传输方法和通信设备以及网络设备。
背景技术
目前无线通信系统大规模应用部署，可向多个用户提供各种类型的通信，例如，语音、数据、多媒体业务等。
在当前的长期演进(Long Term Evolution，LTE)技术的讨论过程中，对于随机接入过程中的第三条消息即Msg3，可以在Msg3中传输上行用户数据，涉及利用媒体接入控制协议(Medium Access Control，MAC)随机接入响应(Random Access Responses，RAR)。
现有技术中，当Msg3的混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)重传次数达到最大重传次数时，若基站仍然无法正确解码，此时用户设备(User Equipment，UE)需要重新发送前导序列(preamble)。
按照现有技术，UE需要重复传输次数达到最大重传次数之后，才能重新选择物理随机接入信道(Physical Random Access Channel,PRACH)资源，以完成随机接入。UE按照现有技术需要多次重复传输，会造成对传输资源的浪费。
发明内容
本申请实施例提供了一种信息传输方法和通信设备以及网络设备，能够节省通信设备的功耗。
第一方面，本申请实施例提供一种信息传输方法，所述方法包括：
通信设备接收第一下行控制信息，所述第一下行控制信息包括所述通信设备传输第一数据的调度信息；
所述通信设备获取所述第一下行控制信息中的指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3；
其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
所述通信设备根据所述调度信息和所述指示信息传输所述第一数据。
本申请实施例中，通信设备可以包括终端设备或者芯片等设备。以通信设备为终端设备为例，终端设备接收到第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息，第二下行控制信息包括终端设备传输第二数据的调度信息，并且第一下行控制信息包括有指示信息，而第二下行控制信息不包含所述指示信息，第一下行控制信息 的格式和第二下行控制信息的格式相同，通过第一下行控制信息中的指示信息，可以指示终端设备传输的第一数据是第一消息3或者第二消息3。因此本申请实施例中针对每次传输的第一下行控制信息都可以通过指示信息来确定传输的第一数据是第一消息3或者第二消息3，无需传输次数达到网络配置的最大HARQ重传次数，因此可以确定是否从传输第二消息3回退到传输第一消息3，从而减少回退时延，节省终端设备的功耗。
第二方面，本申请实施例还提供一种信息传输方法，所述方法包括：
网络设备发送第一下行控制信息，所述第一下行控制信息包括通信设备传输第一数据的调度信息；
所述第一下行控制信息包括指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3，其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
所述网络设备接收所述通信设备传输的所述第一数据。
在本申请实施例中，网络设备发送第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息，第二下行控制信息包括终端设备传输第二数据的调度信息，并且第一下行控制信息包括有指示信息，而第二下行控制信息不包含所述指示信息，第一下行控制信息的格式和第二下行控制信息的格式相同，通过第一下行控制信息中的指示信息，可以指示终端设备传输的第一数据是第一消息3或者第二消息3。因此本申请实施例中针对每次传输的第一下行控制信息都可以通过指示信息来确定传输的第一数据是第一消息3或者第二消息3，无需传输次数达到网络配置的最大HARQ重传次数，因此可以确定是否从传输第二消息3回退到传输第一消息3，从而减少回退时延，节省终端设备的功耗。
在一种可能的设计中，所述通信设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A；
所述第一下行控制信息还包括第一资源分配字段，所述第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000001
比特，其中，所述第一资源分配字段中的
Figure PCTCN2018086617-appb-000002
比特指示上行带宽中的窄带索引，所述第一资源分配字段中的4比特指示所述窄带索引对应的窄带内的资源块分配，所述第二下行控制信息还包括第二资源分配字段，所述第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000003
比特，其中，所述第二资源分配字段中的
Figure PCTCN2018086617-appb-000004
比特指示上行带宽中的窄带索引，所述第二资源分配字段中的5比特指示所述窄带索引对应的窄带内的资源块分配；
和/或,所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式 字段的比特长度为H比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为H+1比特,所述H是大于或等于1的正整数；
和/或，所述第一下行控制信息不包括信道状态信息CSI请求字段，所述第二下行控制信息包括CSI请求字段；
和/或，所述第一下行控制信息不包括探测参考信号SRS请求字段，所述第二下行控制信息包括所述SRS请求字段。
在本申请的一些实施例中，当终端设备处于处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A时，第一下行控制信息还包括第一资源分配字段，例如该第一资源分配字段可以是DCI Format6-0A中的Resource allocation，第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000005
比特，
Figure PCTCN2018086617-appb-000006
表示系统带宽中包含的上行物理资源块(physical resource block，PRB)的个数，
Figure PCTCN2018086617-appb-000007
表示向下取整运算，
Figure PCTCN2018086617-appb-000008
表示向上取整运算。其中，第一资源分配字段中的
Figure PCTCN2018086617-appb-000009
比特指示上行带宽中的窄带索引，第一资源分配字段中的4比特指示窄带索引对应的窄带内的资源块分配。
第二下行控制信息还包括第二资源分配字段，第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000010
比特，其中，第二资源分配字段中的
Figure PCTCN2018086617-appb-000011
比特指示上行带宽中的窄带索引，第二资源分配字段中的5比特指示窄带索引对应的窄带内的资源块分配。
因此，第一下行控制信息中的第一资源分配字段相比于第二下行控制信息中的第二资源分配字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，第一下行控制信息还包括第一调制编码方式字段,例如该第一调制编码方式字段是DCI Format6-0A中的MCS，第一调制编码方式字段的比特长度为H比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为H+1比特,H是大于或等于1的正整数。
因此，第一下行控制信息中的第一调制编码方式字段相比于第二下行控制信息中的第二调制编码方式字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，第一下行控制信息不包括CSI请求字段，第二下行控制信息包括CSI请求字段。例如该CSI请求字段可以是DCI Format6-0A中的CSI request。因此，第一下行控制信息相比于第二下行控制信息减少了CSI请求字段，所减少的CSI请求字段用于 第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
举例说明如下，基站在调度第二消息3或者第一消息3时，基站不会调度UE上报CSI，因此可以在第一下行控制信息中不包括CSI，利用DCI Format 6-0A中的CSI请求字段作为指示信息，通过该指示信息可以指示发送第二消息3，或者回退到发送第一消息3，例如可以通过该指示信息指示进行EDT Msg3的重传或者回退到legacy Msg3。
在本申请的一些实施例中，第一下行控制信息不包括SRS请求字段，第二下行控制信息包括SRS请求字段，例如该CSI请求字段可以是DCI Format6-0A中的SRS request。因此，第一下行控制信息相比于第二下行控制信息减少了SRS请求字段，所减少的SRS请求字段用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在一种可能的设计中，
所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为T比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为T+1比特,所述T是大于或等于1的正整数。
因此，第一下行控制信息中的第一调制编码方式字段相比于第二下行控制信息中的第二调制编码方式字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在一种可能的设计中，
所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
所述第一下行控制信息还包括第一调制编码方式字段，所述指示信息由所述第一调制编码方式字段承载，所述第一调制编码方式字段的比特长度为4比特，所述第一调制编码方式字段的比特状态为0000～1010中的状态时，所述通信设备传输的所述第一数据是所述第一消息3，所述第一调制编码方式字段的比特状态为1011～1111中的状态时，所述通信设备传输的所述第一数据是所述第二消息3。
其中，该第一调制编码方式字段是DCI Format6-0B中Modulation and coding scheme，具有4bits。第一下行控制信息中的指示信息由第一调制编码方式字段承载，第一调制编码方式字段的比特长度为4比特，第一调制编码方式字段的比特状态为0000～1010中的状态时，通过0000～1010中的某种状态可以指示终端设备传输的第一数据是第一消息3，同时该比特状态指示第一消息3的传输块大小。第一调制编码方式字段的比特状态为1011～1111中的状态时，通过0000～1010中的某种状态可以指示终端设备传输的第一数据是第二消息3。例如，预设的状态1111、预设的状态1110或者预设的状态1011指示终端设备传输的第一数据是第二消息3。
在一种可能的设计中，
所述指示信息的比特状态为第一比特状态时，所述通信设备按照第一TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第二TBS发送所述第二消息3；或，
所述指示信息的比特状态为第一比特状态时，所述通信设备按照第二TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第一TBS发送所述第二消息3；
其中所述第一TBS是根据所述第二TBS确定的TBS，所述第二TBS是网络设备配置的TBS。
举例说明如下，第二TBS可以是网络设备配置的最大TBS，指示信息的比特状态可以有两种：第一比特状态和第二比特状态，例如第一比特状态可以为0，第二比特状态可以为1。或者，第一比特状态可以为1，第二比特状态可以为0。第二消息3携带有用户数据，终端设备在指示信息的比特状态为第一比特状态时，终端设备按照第一TBS发送第二消息3，例如第一TBS是小于或者等于网络设备配置的最大传输块大小。当指示信息的比特状态为第二比特状态时，终端设备发送第一消息3或者终端设备按照第二TBS发送第二消息3，即终端设备根据指示信息的比特状态为第二比特状态时，终端设备可以从传输第二消息3回退到第一消息3，或者可以按照网络设备配置的TBS(即第二TBS)来发送第二消息3。举例说明，指示信息的比特状态为1时，指示传输第一消息3，指示信息的比特状态为0时，指示传输第二消息3。通过指示信息的不同比特状态，可以指示终端是否进行EDT回退，即从EDT Msg3回退到leagcy的Msg3，而不需要终端设备进行多次HARQ重复传输之后，重新发送用于指示leagcy Msg3的随机接入前导序列，基站根据发送的随机接入前导序列调度leagcy Msg3，从而降低了回退时延，节省终端设备的功耗。
在一种可能的设计中，
所述指示信息的比特状态为第一比特状态时，所述第一下行控制信息的资源分配字段至少包括
Figure PCTCN2018086617-appb-000012
比特，其中，所述资源分配字段中的
Figure PCTCN2018086617-appb-000013
比特指示上行带宽上的窄带索引，所述资源分配字段中的X比特指示窄带内的资源分配；
所述指示信息的比特状态为第二比特状态时，所述第一下行控制信息的资源分配字段至少包含
Figure PCTCN2018086617-appb-000014
比特，所述资源分配字段中的
Figure PCTCN2018086617-appb-000015
比特指示上行带宽上的窄带索引，所述第一下行控制信息中还包含Y比特，所述Y比特的M×L种状态中的每一种状态指示了所述通信设备传输的所述第一数据是所述第一消息3，且所述Y比特的M×L种状态中的每一种状态都指示了调制编码方式和窄带内资源分配，其中所述窄带内资源分配共有M种资源分配方式，所述调制编码方式共有L种索引,所述M和L为正整数，所述Y比特中除所述M×L种状态外的其他状态中的一种或多种状态指示了所述通信设备传输的所述第一数据是所述第二消息3。
举例说明如下，终端设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A时， 指示信息的比特状态为0时，第一下行控制信息的资源分配字段的长度为
Figure PCTCN2018086617-appb-000016
比特。指示信息的比特状态为1时，第一下行控制信息中包含8比特，所述8比特指示256种状态，所述256种状态中的252种状态用于指示调制编码方式和窄带内资源分配的组合，所述窄带内资源分配包含21种，所述编码方式的索引值包含K～(K+10)和M共12种，当所述比特状态指示所述调制编码方式的索引值为K至(K+10)中的一个值时，所述终端设备传输第一消息3，或所述调制编码方式的索引值为M时,所述终端设备传输第二消息3，其中K和M为整数。例如K为0，M为11。
需要说明的是，本申请实施例中，将现有技术中的MCS状态由16种限制到12种，窄带内资源分配的状态仍然保持21种，此时12x21＝252种，用MCS和资源分配联合编码，需要8比特。相对于现有技术中的MCS的4比特，窄带内资源分配5比特，即现有技术中共有9个比特，本申请实施例中将MCS和资源分配联合编码后只需要8个比特，因此可以节省1比特。用节省的1比特做为指示信息，例如该指示信息可以是标识(flag)。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的。如果该flag为1，且指示的MCS索引为预定义的A值，那么此时指示EDT重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为12个MCS值中的除A值外的另外11个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据指示的MCS索引确定。
举例说明如下，终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B时，指示信息的比特状态为0时，第一下行控制信息的资源分配字段的长度为
Figure PCTCN2018086617-appb-000017
比特。指示信息的比特状态为1时，第一下行控制信息中包含6比特，所述6比特指示64种状态，所述64种状态用于指示调制编码方式和窄带内资源分配的组合，所述窄带内资源分配包含8种，所述编码方式的索引值包含Q～(Q+6)和S共8种，所述调制编码方式的索引值为Q至(Q+6)中的一个值时，所述终端设备传输第一消息3，所述调制编码方式的索引值为S时,所述终端设备传输第二消息3，其中Q和S为整数。例如，Q＝0，S＝7。
需要说明的是，本申请实施例中可以将现有的MCS状态由11种限制到8种，窄带内资源分配的状态仍然保持8种，此时8x8＝64种，用MCS和资源分配联合编码，需要6比特。相对于现在的MCS的4比特，窄带内资源分配3比特，本申请实施例节省1比特。用节省的1比特做为指示信息，例如该指示信息可以是flag。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的。如果该flag为1，且指示的MCS索引为预定义的B值，那么此时指示EDT重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为8个MCS值中的另外7个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据MCS索引确定。
在一种可能的设计中，
所述第一下行控制信息的格式是下行控制信息DCI格式format 6-0A；或，
所述第一下行控制信息的格式是DCI format 6-0B。
第三方面，本申请实施例还提供一种通信设备，所述通信设备包括：
接收模块，用于接收第一下行控制信息，所述第一下行控制信息包括所述通信设备传输第一数据的调度信息；
处理模块，用于获取所述第一下行控制信息中的指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3；
其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
发送模块，用于根据所述调度信息和所述指示信息传输所述第一数据。
第四方面，本申请实施例还提供一种网络设备，所述网络设备包括：
处理模块，用于通过发送模块发送第一下行控制信息，所述第一下行控制信息包括通信设备传输第一数据的调度信息；
所述第一下行控制信息包括指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3，其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
所述处理模块，用于通过接收模块接收所述通信设备传输的所述第一数据。
在一种可能的设计中，
所述通信设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A；
所述第一下行控制信息还包括第一资源分配字段，所述第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000018
比特，其中，所述第一资源分配字段中的
Figure PCTCN2018086617-appb-000019
比特指示上行带宽中的窄带索引，所述第一资源分配字段中的4比特指示所述窄带索引对应的窄带内的资源块分配，所述第二下行控制信息还包括第二资源分配字段，所述第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000020
比特，其中，所述第二资源分配字段中的
Figure PCTCN2018086617-appb-000021
比特指示上行带宽中的窄带索引，所述第二资源分配字段中的5比特指示所述窄带索引对应的窄带内的资源块分配；
和/或,所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为H比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为H+1比特,所述H是大于或等于1的正整数；
和/或，所述第一下行控制信息不包括信道状态信息CSI请求字段，所述第二下行控制 信息包括CSI请求字段；
和/或，所述第一下行控制信息不包括探测参考信号SRS请求字段，所述第二下行控制信息包括所述SRS请求字段。
在一种可能的设计中，
所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为T比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为T+1比特,所述T是大于或等于1的正整数。
在一种可能的设计中，
所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
所述第一下行控制信息还包括第一调制编码方式字段，所述指示信息由所述第一调制编码方式字段承载，所述第一调制编码方式字段的比特长度为4比特，所述第一调制编码方式字段的比特状态为0000～1010中的状态时，所述通信设备传输的所述第一数据是所述第一消息3，所述第一调制编码方式字段的比特状态为1011～1111中的状态时，所述通信设备传输的所述第一数据是所述第二消息3。
在一种可能的设计中，
所述指示信息的比特状态为第一比特状态时，所述通信设备按照第一TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第二TBS发送所述第二消息3；或，
所述指示信息的比特状态为第一比特状态时，所述通信设备按照第二TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第一TBS发送所述第二消息3；
其中所述第一TBS是根据所述第二TBS确定的TBS，所述第二TBS是网络设备配置的TBS。
在一种可能的设计中，
所述指示信息的比特状态为第一比特状态时，所述第一下行控制信息的资源分配字段至少包括
Figure PCTCN2018086617-appb-000022
比特，其中，所述资源分配字段中的
Figure PCTCN2018086617-appb-000023
比特指示上行带宽上的窄带索引，所述资源分配字段中的X比特指示窄带内的资源分配；
所述指示信息的比特状态为第二比特状态时，所述第一下行控制信息的资源分配字段至少包含
Figure PCTCN2018086617-appb-000024
比特，所述资源分配字段中的
Figure PCTCN2018086617-appb-000025
比特指示上行带宽上的窄带索引，所述第一下行控制信息中还包含Y比特，所述Y比特的M×L种状态中的每一种状态指示了所述通信设备传输的所述第一数据是所述第一消息3，且所述Y比特的M×L种状态中的每一种状态都指示了调制编码方式和窄带内资源分配，其中所述窄带内资源分配共有M种资源分配方式，所述调制编码方式共有L种索引,所述M和L为正整数，所述Y比特中除所述M×L种状态外的其他状态中的一种或多种状态指示了所述通信设备传输的所述第一数据是所述第二消息3。
在一种可能的设计中，
所述第一下行控制信息的格式是下行控制信息DCI格式format 6-0A；或，
所述第一下行控制信息的格式是DCI format 6-0B。
第五方面，本申请实施例还提供一种信息传输方法，包括：
通信设备接收下行控制信息，所述下行控制信息包括所述通信设备传输第一数据的调度信息；
所述通信设备根据所述第一下行控制信息确定第一传输块大小TBS；
所述第一TBS小于或者等于第二TBS时，所述通信设备传输的所述第一数据是第一消息3；
所述第一TBS大于所述第二TBS时，所述通信设备传输的所述第二数据是第二消息3；
其中，所述第二TBS为预设的传输块大小、或者系统信息配置的传输块大小、或者无线资源控制信令配置的传输块大小。
第六方面，本申请实施例还提供一种信息传输方法，包括：
网络设备发送下行控制信息，所述下行控制信息包括通信设备传输第一数据的调度信息，所述第一下行控制信息用于通信设备确定第一传输块大小TBS；
所述第一TBS小于或者等于第二TBS时，所述网络设备接收第一消息3；
所述第一TBS大于所述第二TBS时，所述网络设备接收第二消息3；
其中，所述第二TBS为预设的传输块大小、或者系统信息配置的传输块大小、或者无线资源控制信令配置的传输块大小。
第七方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
第八方面，本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
第九方面，本申请实施例提供一种通信设备，该通信设备可以包括终端设备或者芯片等实体，所述通信设备包括：处理器、存储器；所述存储器用于存储指令；所述处理器用于执行所述存储器中的所述指令，使得所述通信设备执行如前述第一方面或第五方面任一项所述的方法。
第十方面，本申请实施例提供一种网络设备，该网络设备可以包括基站或者芯片等实体，所述网络设备包括：处理器、存储器；所述存储器用于存储指令；所述处理器用于执行所述存储器中的所述指令，使得所述网络设备执行如前述第二方面或第六方面任一项所述的方法。
第十一方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于支持网络设备或通信设备实现上述方面中所涉及的功能，例如，例如发送或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存网络设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
附图说明
图1为本申请实施例提供的一种信息传输方法的系统架构示意图；
图2为本申请实施例提供的终端设备和网络设备之间的一种交互流程示意图；
图3为本申请实施例提供的一种信息传输方法的流程方框示意图；
图4为本申请实施例提供的另一种信息传输方法的流程方框示意图；
图5为本申请实施例提供的终端设备和网络设备之间的另一种交互流程示意图；
图6为本申请实施例提供的一种终端设备的组成结构示意图；
图7为本申请实施例提供的一种网络设备的组成结构示意图；
图8为本申请实施例提供的另一种终端设备的组成结构示意图；
图9为本申请实施例提供的另一种网络设备的组成结构示意图。
具体实施方式
本申请实施例提供了一种信息传输方法和通信设备以及网络设备，节省通信设备的功耗。
下面结合附图，对本申请的实施例进行描述。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，这仅仅是描述本申请的实施例中对相同属性的对象在描述时所采用的区分方式。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，以便包含一系列单元的过程、方法、系统、产品或设备不必限于那些单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它单元。
本发明实施例的技术方案可以应用于各种数据处理的通信系统，例如：例如码分多址(code division multiple access，CDMA)、时分多址(time division multiple access，TDMA)、频分多址(frequency division multiple access，FDMA)、正交频分多址(orthogonal frequency-division multiple access，OFDMA)、单载波频分多址(single carrier FDMA，SC-FDMA)和其它系统等。术语“系统”可以和“网络”相互替换。CDMA系统可以实现例如通用无线陆地接入(universal terrestrial radio access，UTRA)，CDMA2000等无线技术。UTRA可以包括宽带CDMA(wideband CDMA，WCDMA)技术和其它CDMA变形的技术。CDMA2000可以覆盖过渡标准(interim standard，IS)2000(IS-2000)，IS-95和IS-856标准。TDMA系统可以实现例如全球移动通信系统(global system for mobile communication，GSM)等无线技术。OFDMA系统可以实现诸如演进通用无线陆地接入(evolved UTRA，E-UTRA)、超级移动宽带(ultra mobile broadband，UMB)、IEEE 802.11(Wi-Fi)，IEEE 802.16(WiMAX)，IEEE 802.20，Flash OFDMA等无线技术。UTRA和E-UTRA是UMTS以及UMTS演进版本。3GPP在长期演进(long term evolution，LTE)和基于LTE演进的各种版本是使用E-UTRA的UMTS的新版本。第五代(5 Generation，简称：“5G”)通信系统、新空口(New Radio，简称“NR)是正在研究当中的下一代通信系统。此外，所述通信系统100还可以适用于面向未来的通信技术，都适用本发明实施例提供的技术方案。本发明实施例描述的系统架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案，并不构成对于本发明实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络 架构的演变和新业务场景的出现，本发明实施例提供的技术方案对于类似的技术问题，同样适用。
图1示出了本申请实施例的一种可能的无线接入网(radio access network，简称RAN)的结构示意图。所述RAN可以为2G网络的基站接入系统(即所述RAN包括基站和基站控制器)，或可以为3G网络的基站接入系统(即所述RAN包括基站和RNC)，或可以为4G网络的基站接入系统(即所述RAN包括eNB和RNC)，或可以为5G网络的基站接入系统。
所述RAN包括一个或多个网络设备20。所述网络设备20可以是任意一种具有无线收发功能的设备，或，设置于具体无线收发功能的设备内的芯片。所述网络设备20包括但不限于：基站(例如基站BS，基站NodeB、演进型基站eNodeB或eNB、第五代5G通信系统中的基站gNodeB或gNB、未来通信系统中的基站、WiFi系统中的接入节点、无线中继节点、无线回传节点)等。基站可以是：宏基站，微基站，微微基站，小站，中继站等。多个基站可以支持上述提及的一种或者多种技术的网络，或者未来演进网络。所述核心网可以支持上述提及一种或者多种技术的网络，或者未来演进网络。基站可以包含一个或多个共站或非共站的传输接收点(Transmission receiving point，TRP)。网络设备20还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)或者分布单元(distributed unit，DU)等。网络设备还可以是服务器，可穿戴设备，或车载设备等。以下以网络设备20为基站为例进行说明。所述多个网络设备20可以为同一类型的基站，也可以为不同类型的基站。基站可以与终端设备1-6进行通信，也可以通过中继站与终端设备1-6进行通信。终端设备1-6可以支持与不同技术的多个基站进行通信，例如，终端设备可以支持与支持LTE网络的基站通信，也可以支持与支持5G网络的基站通信，还可以支持与LTE网络的基站以及5G网络的基站的双连接。例如将终端接入到无线网络的无线接入网(radio access network，RAN)节点。目前，一些RAN节点的举例为：gNB、传输接收点(transmission reception point，TRP)、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)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，或无线保真(wireless fidelity，Wifi)接入点(access point，AP)等。在一种网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备。
通信设备1-6，又称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、终端等，是一种向用户提供语音和/或数据连通性的设备，或，设置于该设备内的芯片，例如，具有无线连接功允许的手持式设备、车载设备等。目前，一些终端设备的举例为：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、智慧家庭(smart home)中的无线终端等。
在本申请实施例中，基站和UE1～UE6组成一个通信系统，在该通信系统中，基站发送系统信息、RAR消息和寻呼消息中的一种或多种给UE1～UE6中的一个或多个UE，此外，UE4～UE6也组成一个通信系统，在该通信系统中，UE5可以作为基站的功能实现，UE5可以发送系统信息、控制信息和寻呼消息中的一种或多种给UE4和UE6中的一个或多个UE。
请参阅图2所示，为本申请实施例提供的网络设备和终端设备之间的一种交互流程示意图，本申请实施例提供的信息传输方法，主要包括如下步骤。
201、网络设备发送第一下行控制信息。
其中，第一下行控制信息包括终端设备传输第一数据的调度信息。
在本申请实施例中，网络设备可以向终端设备发送第一下行控制信息(downlink control information，DCI)，该第一下行控制信息包括有调度信息，该调度信息可用于调度终端设备即将传输的第一数据，其中，该第一数据是指终端设备传输的第三条消息(即消息3，也可以称为Msg3)。消息3指的是随机接入过程中的第三条消息，该消息3中可以携带用户数据。例如，消息3可以支持数据提前传输(early data transmission，EDT)。针对终端设备可以发送的多种消息可以分别配置相应的资源。例如随机接入过程中的消息3至少可以分为两种不同类型，例如第一消息3和第二消息3，因此终端设备可以发送两种不同的消息3，网络设备针对发送不同的消息3可以分别配置相应的资源。例如，第一消息3是不携带用户数据的消息3，该第一消息3也可以称为传统消息3(legacy Msg3)，第二消息3是携带用户数据的消息3，该第二消息3也可以称为EDT Msg3。例如第一消息3可以是正常的消息3传输，又如，第一消息3可以是不提前进行数据传输的消息3。例如第二消息3是提前进行数据传输的消息3。这里的数据可以是终端设备的业务数据。举例说明如下，网络设备根据终端设备发送的不同消息3来分配具体的资源，例如网络设备可以为终端设备分配用于第一消息3的资源块(resource block，RB)个数及起始资源块索引，或者网络设备可以为终端设备分配用于第二消息3的资源块个数及起始资源块索引。
本申请实施例中，第一下行控制信息中除了包括调度信息，还可以包括对该第一数据的指示信息，指示信息用于指示终端设备传输的第一数据是第一消息3或者第二消息3，指示信息的比特长度为1比特。
在本申请实施例中，第一下行控制信息的格式和第二下行控制信息的格式相同，第二下行控制信息包括终端设备传输第二数据的调度信息，其中，第二数据是与第一数据不相同的数据。例如第二数据可以是终端设备处于连接态时传输的数据，第一数据可以是终端设备在空闲态的随机接入过程中传输的数据。且第二下行控制信息不包含指示信息，而第一下行控制信息包含有该指示信息，因此该指示信息可以向终端设备指示需要发送的消息3是第一消息3还是第二消息3。在需要调度不同的数据时，网络设备可以发送不同的下行控制信息，例如可以选择发送第一下行控制信息，或者发送第二下行控制信息。
202、终端设备接收第一下行控制信息。
其中，第一下行控制信息包括终端设备传输第一数据的调度信息。
在本申请的一些实施例中，第一下行控制信息的格式是下行控制信息DCI格式format 6-0A；或，第一下行控制信息的格式是DCI format 6-0B。
203、终端设备获取第一下行控制信息中的指示信息。
其中，指示信息用于指示终端设备传输的第一数据是第一消息3或者第二消息3，指示信息的比特长度为1比特；第一下行控制信息的格式和第二下行控制信息的格式相同，第二下行控制信息包括终端设备传输第二数据的调度信息，且第二下行控制信息不包含指示信息。
在本申请实施例中，网络设备发送的第一下行控制信息中包括有指示信息，则终端设备通过解析该指示信息，可以确定网络设备指示终端设备传输的第一数据是第一消息3或者第二消息3。由于本申请实施例中，第二下行控制信息包括终端设备传输第二数据的调度信息，第二数据是与第一数据不相同的数据。且第二下行控制信息不包含指示信息，而第一下行控制信息包含有该指示信息，因此终端设备通过接收第一下行控制信息可以获取到指示信息，通过该指示信息确定发送第一消息3还是第二消息3。
204、终端设备根据调度信息和指示信息传输第一数据。
在本申请实施例中，第一下行控制信息中的调度信息指示了第一数据的调度方式，第一下行控制信息中的指示信息指示需要传输的第一数据是第一消息3还是第二消息3，因此终端设备通过调度信息和指示信息可以传输第一数据，例如终端设备通过无线网络传输该第一数据。举例说明，若指示信息指示第一数据是第一消息3，则终端设备可以基于本次收到的调度信息来发送第一消息3，若指示信息指示第一数据是第二消息3，则终端设备可以基于本次收到的调度信息来发送第二消息3。
需要说明的是，本申请实施例中第一下行控制信息中包括的指示信息可以包含在调度信息里，也可以不在调度信息里，具体取决于实现场景。
205、网络设备接收终端设备传输的第一数据。
在本申请实施例中，终端设备根据调度信息和指示信息传输第一数据，网络设备可以根据调度信息来接收终端设备发送的第一数据。举例说明，若指示信息指示第一数据是第一消息3，则终端设备可以基于本次收到的调度信息来发送第一消息3，网络设备可以接收到终端设备发送的第一消息3。若指示信息指示第一数据是第二消息3，则终端设备可以基于本次收到的调度信息来发送第二消息3，网络设备可以接收到终端设备发送的第二消息3。
通过前述实施例对本申请的举例说明可知，终端设备接收到第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息，第二下行控制信息包括终端设备传输第二数据的调度信息，并且第一下行控制信息包括有指示信息，而第二下行控制信息不包含所述指示信息，第一下行控制信息的格式和第二下行控制信息的格式相同，通过第一下行控制信息中的指示信息，可以指示终端设备传输的第一数据是第一消息3或者第二消息3。因此本申请实施例中针对每次传输的第一下行控制信息都可以通过指示信息来确定传输的第一数据是第一消息3或者第二消息3，无需传输次数达到网络配置的最大HARQ重传次数，因此可以确定是否从传输第二消息3回退到传输第一消息3，从而减少回退时延，节省终端设备的功耗。
接下来分别从终端设备和网络设备的角度描述本申请实施例提供的信息传输方法，首先请参阅图3所示，本申请实施例提供一种信息传输方法，包括：
301、终端设备接收第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息。
在本申请实施例中，终端设备首先接收来自网络设备发送的第一下行控制信息，该第一下行控制信息包括有调度信息，该调度信息可用于调度终端设备即将传输的第一数据，其中，该第一数据是指终端设备传输的消息。消息3指的是随机接入过程中的第三条消息，该消息3中可以携带用户数据。例如，消息3可以支持数据提前传输。针对终端设备可以发送的多种消息可以分别配置相应的资源。例如随机接入过程中的消息3至少可以分为两种不同类型，例如第一消息3和第二消息3，因此终端设备可以发送两种不同的消息3，网络设备针对发送不同的消息3可以分别配置相应的资源。例如，第一消息3是不携带用户数据的消息3，第二消息3是携带用户数据的消息3。例如第一消息3可以是正常的消息3传输，又如，第一消息3可以是不提前进行数据传输的消息3。例如第二消息3是提前进行数据传输的消息3。这里的数据可以是终端设备的业务数据。
302、终端设备获取第一下行控制信息中的指示信息，指示信息用于指示终端设备传输的第一数据是第一消息3或者第二消息3，其中第一消息3是不携带用户数据的消息3，第二消息3是携带用户数据的消息3；指示信息的比特长度为1比特；第一下行控制信息的格式和第二下行控制信息的格式相同，第二下行控制信息包括终端设备传输第二数据的调度信息，且第二下行控制信息不包含指示信息。
在本申请的一些实施例中，所述第一消息3可以是携带用户数据的消息3，所述第二消息3可以是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述终端设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS。网络设备可以在重传调度中调度终端设备按照网络设备配置的TBS传输携带用户数据的消息3，从而基站在接收该携带用户数据的消息3时，不需要进行盲检测，从而降低了网络设备的复杂度。
本申请实施例中，第一下行控制信息中除了包括调度信息，还可以包括对该第一数据的指示信息，指示信息用于指示终端设备传输的第一数据是第一消息3或者第二消息3，指示信息的比特长度为1比特。
在本申请的一些实施例中，终端设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A；
第一下行控制信息还包括第一资源分配字段，第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000026
比特，其中，第一资源分配字段中的
Figure PCTCN2018086617-appb-000027
比特指示上行带宽中的窄带索引，第一资源分配字段中的4比特指示窄带索引对应的窄带内的资源块分配，第二下行控制信息还包括第二资源分配字段，第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000028
比特，其中，第二资源分配字段中的
Figure PCTCN2018086617-appb-000029
比特指示上行带宽中的窄带索引，第二资源分配字段中 的5比特指示窄带索引对应的窄带内的资源块分配；
和/或,第一下行控制信息还包括第一调制编码方式字段,第一调制编码方式字段的比特长度为H比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为H+1比特,H是大于或等于1的正整数；
和/或，第一下行控制信息不包括信道状态信息(Channel State Information，CSI)请求字段，第二下行控制信息包括CSI请求字段；
和/或，第一下行控制信息不包括探测参考信号(Sounding Reference Signal，SRS)请求字段，第二下行控制信息包括SRS请求字段。
其中，终端设备处于ModeA或者ModeB为连接态的覆盖增强(coverage enhancement,CE)等级(level)分类，CE level0/1/2/3为空闲态的覆盖增强等级，ModeA对应着CE level 0/1，ModeB对应着CE level 2/3。
在本申请的一些实施例中，当终端设备处于处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A时，第一下行控制信息还包括第一资源分配字段，例如该第一资源分配字段可以是DCI Format6-0A中的Resource allocation，第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000030
比特，
Figure PCTCN2018086617-appb-000031
表示系统带宽中包含的上行物理资源块(physical resource block，PRB)的个数，
Figure PCTCN2018086617-appb-000032
表示向下取整运算，
Figure PCTCN2018086617-appb-000033
表示向上取整运算。其中，第一资源分配字段中的
Figure PCTCN2018086617-appb-000034
比特指示上行带宽中的窄带索引，第一资源分配字段中的4比特指示窄带索引对应的窄带内的资源块分配。
第二下行控制信息还包括第二资源分配字段，第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000035
比特，其中，第二资源分配字段中的
Figure PCTCN2018086617-appb-000036
比特指示上行带宽中的窄带索引，第二资源分配字段中的5比特指示窄带索引对应的窄带内的资源块分配。
因此，第一下行控制信息中的第一资源分配字段相比于第二下行控制信息中的第二资源分配字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，第一下行控制信息还包括第一调制编码方式字段,例如该第一调制编码方式字段是DCI Format6-0A中的MCS，第一调制编码方式字段的比特长度为H比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为H+1比特,H是大于或等于1的正整数，例如H的取值可以是3比特，H+1为4比特。
因此，第一下行控制信息中的第一调制编码方式字段相比于第二下行控制信息中的第二调制编码方式字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息 的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，第一下行控制信息不包括CSI请求字段，第二下行控制信息包括CSI请求字段。例如该CSI请求字段可以是DCI Format6-0A中的CSI request。因此，第一下行控制信息相比于第二下行控制信息减少了CSI请求字段，所减少的CSI请求字段用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
举例说明如下，基站在调度第二消息3或者第一消息3时，基站不会调度UE上报CSI，因此可以在第一下行控制信息中不包括CSI，利用DCI Format 6-0A中的CSI请求字段作为指示信息，通过该指示信息可以指示发送第二消息3，或者回退到发送第一消息3，例如可以通过该指示信息指示进行EDT Msg3的重传或者回退到legacy Msg3。
在本申请的一些实施例中，第一下行控制信息不包括SRS请求字段，第二下行控制信息包括SRS请求字段，例如该CSI请求字段可以是DCI Format6-0A中的SRS request。因此，第一下行控制信息相比于第二下行控制信息减少了SRS请求字段，所减少的SRS请求字段用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
举例说明如下，由于基站在调度EDT Msg3或者legacy Msg 3时，基站不会调度UE发送SRS，因此可以在第一下行控制信息中不包括SRS，利用DCI Format 6-0A中的SRS请求字段作为指示信息，利用DCI Format 6-0A中的SRS请求字段指示EDT Msg3的重传或者回退到legacy Msg3。
在本申请的一些实施例中，终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
第一下行控制信息还包括第一调制编码方式字段,第一调制编码方式字段的比特长度为T比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为T+1比特,T是大于或等于1的正整数，例如，T的取值可以为3比特，T+1的取值可以为4比特。
其中，该第一调制编码方式字段是DCI Format6-0B中的MCS，第一调制编码方式字段的比特长度为T比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为T+1比特。
因此，第一下行控制信息中的第一调制编码方式字段相比于第二下行控制信息中的第二调制编码方式字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
第一下行控制信息还包括第一调制编码方式字段，指示信息由第一调制编码方式字段承载，第一调制编码方式字段的比特长度为4比特，第一调制编码方式字段的比特状态为0000～1010中的状态时，终端设备传输的第一数据是第一消息3，第一调制编码方式字段的比特状态为1011～1111中的状态时，终端设备传输的第一数据是第二消息3。
其中，该第一调制编码方式字段是DCI Format6-0B中Modulation and coding scheme，具有4bits。第一下行控制信息中的指示信息由第一调制编码方式字段承载，第一调制编码方式字段的比特长度为4比特，第一调制编码方式字段的比特状态为0000～1010中的状态时，通过0000～1010中的某种状态可以指示终端设备传输的第一数据是第一消息3，同时该比特状态指示第一消息3的传输块大小。第一调制编码方式字段的比特状态为1011～1111中的状态时，通过0000～1010中的某种状态可以指示终端设备传输的第一数据是第二消息3。例如，预设的状态1111、预设的状态1110或者预设的状态1011指示终端设备传输的第一数据是第二消息3。
本申请实施例中，第一下行控制信息中的指示信息由第一调制编码方式字段来承载，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些一些实施例中，指示信息的比特状态为第一比特状态时，终端设备按照第一TBS发送第二消息3，指示信息的比特状态为第二比特状态时，终端设备发送第一消息3或者终端设备按照第二TBS发送第二消息3；或，
指示信息的比特状态为第一比特状态时，终端设备按照第二TBS发送第二消息3，指示信息的比特状态为第二比特状态时，终端设备发送第一消息3或者终端设备按照第一TBS发送第二消息3；
其中第一TBS是根据第二TBS确定的TBS，第二TBS是网络设备配置的TBS。
其中，第一TBS是根据第二TBS确定的TBS可以包括如下过程：在EDT的过程中，网络设备通过系统消息给每个覆盖增强等级/模式配置最大TBS，即第二TBS。网络设备还可以使能UE选择预设的该最大TBS对应的小于等于该最大TBS的TBS值，即选择小于等于第二TBS的第一TBS。如果网络设备使能UE选择预设的该最大TBS对应的小于等于该最大TBS的TBS值，网络设备在解码时，需要盲检测UE使用的TBS值；如果网络设备没有使能UE选择预设的该最大TBS对应的小于等于该最大TBS的TBS值，UE按照网络设备配置的最大TBS作为第一TBS，按照该第一TBS发送包含用户数据的Msg3。
举例说明如下，第二TBS可以是网络设备配置的最大TBS，指示信息的比特状态可以有两种：第一比特状态和第二比特状态，例如第一比特状态可以为0，第二比特状态可以为1。或者，第一比特状态可以为1，第二比特状态可以为0。第二消息3携带有用户数据，终端设备在指示信息的比特状态为第一比特状态时，终端设备按照第一TBS发送第二消息3，例如第一TBS是小于或者等于网络设备配置的最大传输块大小。当指示信息的比特状态为第二比特状态时，终端设备发送第一消息3或者终端设备按照第二TBS发送第二消息3，即终端设备根据指示信息的比特状态为第二比特状态时，终端设备可以从传输第二消息3回退到第一消息3，或者可以按照网络设备配置的TBS(即第二TBS)来发送第二消息3。举例说明，指示 信息的比特状态为1时，指示传输第一消息3，指示信息的比特状态为0时，指示传输第二消息3。通过指示信息的不同比特状态，可以指示终端是否进行EDT回退，即从EDT Msg3回退到leagcy的Msg3，而不需要终端设备进行多次HARQ重复传输之后，重新发送用于指示leagcy Msg3的随机接入前导序列，基站根据发送的随机接入前导序列调度leagcy Msg3，从而降低了回退时延，节省终端设备的功耗。
进一步的，在本申请的一些实施例中，指示信息的比特状态为第一比特状态时，第一下行控制信息的资源分配字段至少包括
Figure PCTCN2018086617-appb-000037
比特，其中，资源分配字段中的
Figure PCTCN2018086617-appb-000038
比特指示上行带宽上的窄带索引，资源分配字段中的X比特指示窄带内的资源分配；
指示信息的比特状态为第二比特状态时，第一下行控制信息的资源分配字段至少包含
Figure PCTCN2018086617-appb-000039
比特，资源分配字段中的
Figure PCTCN2018086617-appb-000040
比特指示上行带宽上的窄带索引，第一下行控制信息中还包含Y比特，Y比特的M×L种状态中的每一种状态指示了终端设备传输的第一数据是第一消息3，且Y比特的M×L种状态中的每一种状态都指示了调制编码方式和窄带内资源分配，其中窄带内资源分配共有M种资源分配方式，调制编码方式共有L种索引,M和L为正整数，Y比特中除M×L种状态外的其他状态中的一种或多种状态指示了终端设备传输的第一数据是第二消息3。
举例说明如下，终端设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A时，指示信息的比特状态为0时，第一下行控制信息的资源分配字段的长度为
Figure PCTCN2018086617-appb-000041
比特。指示信息的比特状态为1时，第一下行控制信息中包含8比特，所述8比特指示256种状态，所述256种状态中的252种状态用于指示调制编码方式和窄带内资源分配的组合，所述窄带内资源分配包含21种，所述编码方式的索引值包含K～(K+10)和M共12种，当所述比特状态指示所述调制编码方式的索引值为K至(K+10)中的一个值时，所述终端设备传输第一消息3，或所述调制编码方式的索引值为M时,所述终端设备传输第二消息3，其中K和M为整数。例如K为0，M为11。
需要说明的是，本申请实施例中，将现有技术中的MCS状态由16种限制到12种，窄带内资源分配的状态仍然保持21种，此时12x21＝252种，用MCS和资源分配联合编码，需要8比特。相对于现有技术中的MCS的4比特，窄带内资源分配5比特，即现有技术中共有9个比特，本申请实施例中将MCS和资源分配联合编码后只需要8个比特，因此可以节省1比特。用节省的1比特做为指示信息，例如该指示信息可以是标识(flag)。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的。如果该flag为1，且指示的MCS索引为预定义的A值，那么此时指示EDT重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为12个MCS值中的除A值外的另外11个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据指示的MCS索引确定。
举例说明如下，终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B时，指示信息的比特状态为0时，第一下行控制信息的资源分配字段的长度为
Figure PCTCN2018086617-appb-000042
比特。指示信息的比特状态为1时，第一下行控制信息中包含6比特，所述6比特指示64种状态，所述64种状态用于指示调制编码方式和窄带内资源分配的组合，所述窄带内资源分配包含8种，所述编码方式的索引值包含Q～(Q+6)和S共8种，所述调制编码方式的索引值为Q至(Q+6)中的一个值时，所述终端设备传输第一消息3，所述调制编码方式的索引值为S时,所述终端设备传输第二消息3，其中Q和S为整数。例如，Q＝0，S＝7。
需要说明的是，本申请实施例中可以将现有的MCS状态由11种限制到8种，窄带内资源分配的状态仍然保持8种，此时8x8＝64种，用MCS和资源分配联合编码，需要6比特。相对于现在的MCS的4比特，窄带内资源分配3比特，本申请实施例节省1比特。用节省的1比特做为指示信息，例如该指示信息可以是flag。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的。如果该flag为1，且指示的MCS索引为预定义的B值，那么此时指示EDT重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为8个MCS值中的另外7个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据MCS索引确定。
303、终端设备根据调度信息和指示信息传输第一数据。
在本申请实施例中，第一下行控制信息中的调度信息指示了第一数据的调度方式，第一下行控制信息中的指示信息指示需要传输的第一数据是第一消息3还是第二消息3，因此终端设备通过调度信息和指示信息可以传输第一数据，例如终端设备通过无线网络传输该第一数据。举例说明，若指示信息指示第一数据是第一消息3，则终端设备可以基于本次收到的调度信息来发送第一消息3，若指示信息指示第一数据是第二消息3，则终端设备可以基于本次收到的调度信息来发送第二消息3。
通过前述实施例对本申请的举例说明可知，终端设备接收到第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息，第二下行控制信息包括终端设备传输第二数据的调度信息，并且第一下行控制信息包括有指示信息，而第二下行控制信息不包含所述指示信息，第一下行控制信息的格式和第二下行控制信息的格式相同，通过第一下行控制信息中的指示信息，可以指示终端设备传输的第一数据是第一消息3或者第二消息3。因此本申请实施例中针对每次传输的第一下行控制信息都可以通过指示信息来确定传输的第一数据是第一消息3或者第二消息3，无需传输次数达到网络配置的最大HARQ重传次数，因此可以确定是否从传输第二消息3回退到传输第一消息3，从而减少回退时延，节省终端设备的功耗。
前述实施例从终端设备的角度描述了本申请实施例提供的信息传输方法，接下来从网络设备的角度来描述本申请实施例提供的信息传输方法，请参阅图4所示，本申请实施例提供一种信息传输方法，包括：
401、网络设备发送第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息。第一下行控制信息包括指示信息，指示信息用于指示终端设备传输的第一数据是第一消息3或者第二消息3，其中第一消息3是不携带用户数据的消息3，第二消息3是携 带用户数据的消息3；指示信息的比特长度为1比特；第一下行控制信息的格式和第二下行控制信息的格式相同，第二下行控制信息包括终端设备传输第二数据的调度信息，且第二下行控制信息不包含指示信息。
本申请实施例中，第一下行控制信息中除了包括调度信息，还可以包括对该第一数据的指示信息，指示信息用于指示终端设备传输的第一数据是第一消息3或者第二消息3，指示信息的比特长度为1比特。
在本申请的一些实施例中，所述第一消息3可以是携带用户数据的消息3，所述第二消息3可以是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述终端设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS。网络设备可以在重传调度中调度终端设备按照网络设备配置的TBS传输携带用户数据的消息3，从而基站在接收该携带用户数据的消息3时，不需要进行盲检测，从而降低了网络设备的复杂度。
在本申请的一些实施例中，终端设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A；
第一下行控制信息还包括第一资源分配字段，第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000043
比特，其中，第一资源分配字段中的
Figure PCTCN2018086617-appb-000044
比特指示上行带宽中的窄带索引，第一资源分配字段中的4比特指示窄带索引对应的窄带内的资源块分配，第二下行控制信息还包括第二资源分配字段，第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000045
比特，其中，第二资源分配字段中的
Figure PCTCN2018086617-appb-000046
比特指示上行带宽中的窄带索引，第二资源分配字段中的5比特指示窄带索引对应的窄带内的资源块分配；
和/或,第一下行控制信息还包括第一调制编码方式字段,第一调制编码方式字段的比特长度为H比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为H+1比特,H是大于或等于1的正整数，例如H的取值可以是3比特，H+1为4比特；
和/或，第一下行控制信息不包括信道状态信息(Channel State Information，CSI)请求字段，第二下行控制信息包括CSI请求字段；
和/或，第一下行控制信息不包括探测参考信号(Sounding Reference Signal，SRS)请求字段，第二下行控制信息包括SRS请求字段。
其中，终端设备处于ModeA或者ModeB为连接态的覆盖增强(coverage enhancement,CE)等级(level)分类，CE level0/1/2/3为空闲态的覆盖增强等级，ModeA对应着CE level 0/1，ModeB对应着CE level 2/3。
在本申请的一些实施例中，当终端设备处于处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A时，第一下行控制信息还包括第一资源分配字段，例如该第一资源分配字段可以是DCI Format6-0A中的Resource allocation，第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000047
比特，
Figure PCTCN2018086617-appb-000048
表示系统带宽中包含的上行物理资源块(physical resource block，PRB)的个数，
Figure PCTCN2018086617-appb-000049
表示向下取整运算，
Figure PCTCN2018086617-appb-000050
表示向上取整运算。其中，第一资源分配字段中的
Figure PCTCN2018086617-appb-000051
比特指示上行带宽中的窄带索引，第一资源分配字段中的4比特指示窄带索引对应的窄带内的资源块分配。
第二下行控制信息还包括第二资源分配字段，第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000052
比特，其中，第二资源分配字段中的
Figure PCTCN2018086617-appb-000053
比特指示上行带宽中的窄带索引，第二资源分配字段中的5比特指示窄带索引对应的窄带内的资源块分配。
因此，第一下行控制信息中的第一资源分配字段相比于第二下行控制信息中的第二资源分配字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，第一下行控制信息还包括第一调制编码方式字段,例如该第一调制编码方式字段是DCI Format6-0A中的MCS，第一调制编码方式字段的比特长度为H比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为H+1比特,H是大于或等于1的正整数。
因此，第一下行控制信息中的第一调制编码方式字段相比于第二下行控制信息中的第二调制编码方式字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，第一下行控制信息不包括CSI请求字段，第二下行控制信息包括CSI请求字段。例如该CSI请求字段可以是DCI Format6-0A中的CSI request。因此，第一下行控制信息相比于第二下行控制信息减少了CSI请求字段，所减少的CSI请求字段用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
举例说明如下，基站在调度第二消息3或者第一消息3时，基站不会调度UE上报CSI，因此可以在第一下行控制信息中不包括CSI，利用DCI Format 6-0A中的CSI请求字段作为指示信息，通过该指示信息可以指示发送第二消息3，或者回退到发送第一消息3，例如可以通过该指示信息指示进行EDT Msg3的重传或者回退到legacy Msg3。
在本申请的一些实施例中，第一下行控制信息不包括SRS请求字段，第二下行控制信息包括SRS请求字段，例如该CSI请求字段可以是DCI Format6-0A中的SRS request。因此，第 一下行控制信息相比于第二下行控制信息减少了SRS请求字段，所减少的SRS请求字段用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
举例说明如下，由于基站在调度EDT Msg3或者legacy Msg 3时，基站不会调度UE发送SRS，因此可以在第一下行控制信息中不包括SRS，利用DCI Format 6-0A中的SRS请求字段作为指示信息，利用DCI Format 6-0A中的SRS请求字段指示EDT Msg3的重传或者回退到legacy Msg3。
在本申请的一些实施例中，终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
第一下行控制信息还包括第一调制编码方式字段,第一调制编码方式字段的比特长度为T比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为T+1比特,T是大于或等于1的正整数，例如，T的取值可以为3比特，T+1的取值可以为4比特。
其中，该第一调制编码方式字段是DCI Format6-0B中的MCS，第一调制编码方式字段的比特长度为T比特，第二下行控制信息还包括第二调制编码方式字段,第二调制编码方式字段的比特长度为T+1比特。
因此，第一下行控制信息中的第一调制编码方式字段相比于第二下行控制信息中的第二调制编码方式字段少了1个比特，所减少的1个比特用于第一下行控制信息中的指示信息，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些实施例中，终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
第一下行控制信息还包括第一调制编码方式字段，指示信息由第一调制编码方式字段承载，第一调制编码方式字段的比特长度为4比特，第一调制编码方式字段的比特状态为0000～1010中的状态时，终端设备传输的第一数据是第一消息3，第一调制编码方式字段的比特状态为1011～1111中的状态时，终端设备传输的第一数据是第二消息3。
其中，该第一调制编码方式字段是DCI Format6-0B中Modulation and coding scheme，具有4bits。第一下行控制信息中的指示信息由第一调制编码方式字段承载，第一调制编码方式字段的比特长度为4比特，第一调制编码方式字段的比特状态为0000～1010中的状态时，通过0000～1010中的某种状态可以指示终端设备传输的第一数据是第一消息3，同时该比特状态指示第一消息3的传输块大小。第一调制编码方式字段的比特状态为1011～1111中的状态时，通过0000～1010中的某种状态可以指示终端设备传输的第一数据是第二消息3。例如，预设的状态1111、预设的状态1110或者预设的状态1011指示终端设备传输的第一数据是第二消息3。
本申请实施例中，第一下行控制信息中的指示信息由第一调制编码方式字段来承载，第一下行控制信息与第二下行控制信息具有相同的格式，在不额外增加第一下行控制信息 的开销的情况下，本申请实施例中通过第一下行控制信息中的指示信息支持提前回退到第一消息3，从而降低了回退时延，节省终端设备的功耗。
在本申请的一些一些实施例中，指示信息的比特状态为第一比特状态时，终端设备按照第一TBS发送第二消息3，指示信息的比特状态为第二比特状态时，终端设备发送第一消息3或者终端设备按照第二TBS发送第二消息3；或，
指示信息的比特状态为第一比特状态时，终端设备按照第二TBS发送第二消息3，指示信息的比特状态为第二比特状态时，终端设备发送第一消息3或者终端设备按照第一TBS发送第二消息3；
其中第一TBS是根据第二TBS确定的TBS，第二TBS是网络设备配置的TBS。
其中，第一TBS是根据第二TBS确定的TBS可以包括如下过程：在EDT的过程中，网络设备通过系统消息给每个覆盖增强等级/模式配置最大TBS，即第二TBS。网络设备还可以使能UE选择预设的该最大TBS对应的小于等于该最大TBS的TBS值，即选择小于等于第二TBS的第一TBS。如果网络设备使能UE选择预设的该最大TBS对应的小于等于该最大TBS的TBS值，网络设备在解码时，需要盲检测UE使用的TBS值；如果网络设备没有使能UE选择预设的该最大TBS对应的小于等于该最大TBS的TBS值，UE按照网络设备配置的最大TBS作为第一TBS，按照该第一TBS发送包含用户数据的Msg3。
举例说明如下，第二TBS可以是网络设备配置的最大TBS，指示信息的比特状态可以有两种：第一比特状态和第二比特状态，例如第一比特状态可以为0，第二比特状态可以为1。或者，第一比特状态可以为1，第二比特状态可以为0。第二消息3携带有用户数据，终端设备在指示信息的比特状态为第一比特状态时，终端设备按照第一TBS发送第二消息3，例如第一TBS是小于或者等于网络设备配置的最大传输块大小。当指示信息的比特状态为第二比特状态时，终端设备发送第一消息3或者终端设备按照第二TBS发送第二消息3，即终端设备根据指示信息的比特状态为第二比特状态时，可以从传输第二消息3回退到第一消息3，或者可以按照网络设备配置的TBS(即第二TBS)来发送第二消息3。举例说明，指示信息的比特状态为1时，指示传输第一消息3，指示信息的比特状态为0时，指示传输第二消息3。通过指示信息的不同比特状态，可以指示终端是否进行EDT回退，即从EDT Msg3回退到leagcy的Msg3，而不需要终端设备进行多次HARQ重复传输之后，重新发送用于指示leagcy Msg3的随机接入前导序列，基站根据发送的随机接入前导序列调度leagcy Msg3，从而降低了回退时延，节省终端设备的功耗。
进一步的，在本申请的一些实施例中，指示信息的比特状态为第一比特状态时，第一下行控制信息的资源分配字段至少包括
Figure PCTCN2018086617-appb-000054
比特，其中，资源分配字段中的
Figure PCTCN2018086617-appb-000055
比特指示上行带宽上的窄带索引，资源分配字段中的X比特指示窄带内的资源分配；
指示信息的比特状态为第二比特状态时，第一下行控制信息的资源分配字段至少包含
Figure PCTCN2018086617-appb-000056
比特，资源分配字段中的
Figure PCTCN2018086617-appb-000057
比特指示上行带宽上的窄带索引，第一下行控制信息中还包含Y比特，Y比特的M×L种状态中的每一种状态指示了终端设备传输的第一数据是第一消息3，且Y比特的M×L种状态中的每一种状态都指示了调制编码方式和窄带内资源分配，其中窄带内资源分配共有M种资源分配方式，调制编码方式共有L种索引,M和L为正整数，Y比特中除M×L种状态外的其他状态中的一种或多种状态指示了终端设备传输的第一数据是第二消息3。
举例说明如下，终端设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A时，指示信息的比特状态为0时，第一下行控制信息的资源分配字段的长度为
Figure PCTCN2018086617-appb-000058
比特。指示信息的比特状态为1时，第一下行控制信息中包含8比特，所述8比特指示256种状态，所述256种状态中的252种状态用于指示调制编码方式和窄带内资源分配的组合，所述窄带内资源分配包含21种，所述编码方式的索引值包含K～(K+10)和M共12种，当所述比特状态指示所述调制编码方式的索引值为K至(K+10)中的一个值时，所述终端设备传输第一消息3，或所述调制编码方式的索引值为M时,所述终端设备传输第二消息3，其中K和M为整数。例如K为0，M为11。
需要说明的是，本申请实施例中，将现有技术中的MCS状态由16种限制到12种，窄带内资源分配的状态仍然保持21种，此时12x21＝252种，用MCS和资源分配联合编码，需要8比特。相对于现有技术中的MCS的4比特，窄带内资源分配5比特，即现有技术中共有9个比特，本申请实施例中将MCS和资源分配联合编码后只需要8个比特，因此可以节省1比特。用节省的1比特做为指示信息，例如该指示信息可以是标识(flag)。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的。如果该flag为1，且指示的MCS索引为预定义的A值，那么此时指示EDT重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为12个MCS值中的除A值外的另外11个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据指示的MCS索引确定。
举例说明如下，终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B时，指示信息的比特状态为0时，第一下行控制信息的资源分配字段的长度为
Figure PCTCN2018086617-appb-000059
比特。指示信息的比特状态为1时，第一下行控制信息中包含6比特，所述6比特指示64种状态，所述64种状态用于指示调制编码方式和窄带内资源分配的组合，所述窄带内资源分配包含8种，所述编码方式的索引值包含Q～(Q+6)和S共8种，所述调制编码方式的索引值为Q至(Q+6)中的一个值时，所述终端设备传输第一消息3，所述调制编码方式的索引值为S时,所述终端设备传输第二消息3，其中Q和S为整数。例如，Q＝0，S＝7。
需要说明的是，本申请实施例中可以将现有的MCS状态由11种限制到8种，窄带内资源分配的状态仍然保持8种，此时8x8＝64种，用MCS和资源分配联合编码，需要6比特。相对于现在的MCS的4比特，窄带内资源分配3比特，本申请实施例节省1比特。用节省的1比特做为指示信息，例如该指示信息可以是flag。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的。如果该flag为1，且指示的MCS索引为预定义的B值，那么此时指示EDT 重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为8个MCS值中的另外7个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据MCS索引确定。
402、网络设备接收终端设备传输的第一数据。
在本申请实施例中，终端设备根据调度信息和指示信息传输第一数据，网络设备可以根据调度信息来接收终端设备发送的第一数据。举例说明，若指示信息指示第一数据是第一消息3，则终端设备可以基于本次收到的调度信息来发送第一消息3，网络设备可以接收到终端设备发送的第一消息3。若指示信息指示第一数据是第二消息3，则终端设备可以基于本次收到的调度信息来发送第二消息3，网络设备可以接收到终端设备发送的第二消息3。
通过前述实施例对本申请的举例说明可知，终端设备接收到第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息，第二下行控制信息包括终端设备传输第二数据的调度信息，并且第一下行控制信息包括有指示信息，而第二下行控制信息不包含所述指示信息，第一下行控制信息的格式和第二下行控制信息的格式相同，通过第一下行控制信息中的指示信息，可以指示终端设备传输的第一数据是第一消息3或者第二消息3。因此本申请实施例中针对每次传输的第一下行控制信息都可以通过指示信息来确定传输的第一数据是第一消息3或者第二消息3，无需传输次数达到网络配置的最大HARQ重传次数，因此可以确定是否从传输第二消息3回退到传输第一消息3，从而减少回退时延，节省终端设备的功耗。
前述实施例描述了本申请实施例提供的信息传输方法，请参阅图5所示，本申请实施例提供的终端设备和网络设备交互实现的另一种信息传输方法，包括：
501、网络设备发送下行控制信息。其中，下行控制信息包括终端设备传输第一数据的调度信息。
在本申请实施例中，网络设备发送下行控制信息，该下行控制信息包括有调度信息，该调度信息可用于调度终端设备即将传输的第一数据，其中，该第一数据是指终端设备传输的消息。消息3指的是随机接入过程中的第三条消息，该消息3中可以携带用户数据。例如，消息3可以支持数据提前传输。针对终端设备可以发送的多种消息可以分别配置相应的资源。例如随机接入过程中的消息3至少可以分为两种不同类型，例如第一消息3和第二消息3，因此终端设备可以发送两种不同的消息3，网络设备针对发送不同的消息3可以分别配置相应的资源。例如，第一消息3是不携带用户数据的消息3，第二消息3是携带用户数据的消息3。例如第一消息3可以是正常的消息3传输，又如，第一消息3可以是不提前进行数据传输的消息3。例如第二消息3是提前进行数据传输的消息3。这里的数据可以是终端设备的业务数据。
502、终端设备接收下行控制信息，下行控制信息包括终端设备传输第一数据的调度信息。
在本申请实施例中，终端设备首先接收来自网络设备发送的下行控制信息，该下行控制信息包括有调度信息，该调度信息可用于调度终端设备即将传输的第一数据，其中，该第一数据是指终端设备传输的消息。消息3指的是随机接入过程中的第三条消息，该消息3中可以携带用户数据。例如，消息3可以支持数据提前传输。针对终端设备可以发送的多种 消息可以分别配置相应的资源。例如随机接入过程中的消息3至少可以分为两种不同类型，例如第一消息3和第二消息3，因此终端设备可以发送两种不同的消息3，网络设备针对发送不同的消息3可以分别配置相应的资源。例如，第一消息3是不携带用户数据的消息3，第二消息3是携带用户数据的消息3。例如第一消息3可以是正常的消息3传输，又如，第一消息3可以是不提前进行数据传输的消息3。例如第二消息3是提前进行数据传输的消息3。这里的数据可以是终端设备的业务数据。
503、终端设备根据下行控制信息确定第一传输块大小TBS。当第一TBS小于或者等于第二TBS时触发执行步骤504和步骤505，当第一TBS大于第二TBS时触发执行步骤506和步骤507。
504、第一TBS小于或者等于第二TBS时，终端设备传输的第一数据是第一消息3。
505、网络设备接收终端设备传输的第一消息3。
506、第一TBS大于第二TBS时，终端设备传输的第一数据是第二消息3。
507、网络设备接收终端设备传输的第二消息3。
其中，第二TBS为预设的传输块大小、或者系统信息配置的传输块大小、或者无线资源控制信令配置的传输块大小。
在本申请实施例中，终端设备根据下行控制信息确定第一传输块大小TBS；当所述第一TBS小于或者等于第二TBS，所述终端设备发送第一消息3，当所述第一TBS大于第二TBS，所述终端设备发送第二消息3；所述第二TBS为预设的传输块大小、系统消息广播的传输块大小或者移动控制消息广播的传输块大小。举例说明，网络设备可以通过隐式指示的方式来向终端设备指示第一数据的类型是第一消息3或者第二消息3。举例说明，网络设备可以通过传输块大小(transport block size，TBS)来指示，根据网络设备在DCI中配置的第一TBS和预设的第二TBS来确定第一数据的类型，该第二TBS可以是网络设备发送的系统消息或者移动控制消息广播的TBS，或者第二TBS可以是预先设置的TBS。如果第一TBS小于或等于第二TBS，回退到legacy Msg3。否则，传输EDT Msg3。
本申请实施例中可以通过对下行控制信息中携带的TBS来确定传输的第一数据是第一消息3或者第二消息3，无需传输次数达到网络配置的最大HARQ重传次数，因此可以确定是否从传输第二消息3回退到传输第一消息3，从而减少回退时延，节省终端设备的功耗。
为便于更好的理解和实施本发明实施例的上述方案，下面举例相应的应用场景来进行具体说明。
现有技术中，当Msg3的HARQ重传次数达到最大，基站仍然没能正确解码，UE需要返回到第一步，即重新发送前导序列。如果按照现有标准，UE想回退到传输legacy Msg3，UE需要重复传输次数达到最大HARQ重传次数之后，才能重新选择用于指示legacy Msg3的PRACH资源，进行legacy的随机接入。现有标准中，UE从EDT Msg3回退到legacy Msg 3需要达到最大HARQ重传次数，时延大，功耗高。
本申请实施例中，当UE传输EDT Msg3传输不正确或者初始接入负载比较重的情况下，利用DCI Format 6-0A/B在UE传输次数没有达到网络配置的最大HARQ重传次数时，指示EDT Msg3回退到传输legacy Msg3，从而减少回退时延，节省UE功耗。
本申请实施例中，采用如下方案：
1、DCI Format6-0A中的resource allocation的低5比特中的最低/高比特用于指示Mode A EDT Msg3的回退到legacy Msg3。
2、新增的用于指示sub-PRB资源分配的比特用于指示EDT回退。
3、预设的MCS的状态用于指示EDT的回退，Mode B利用unused状态。
4、根据网络在DCI中配置的TBS和预设的/系统消息/移动控制消息广播的TBS对比，隐式地指示回退。
本发明实施例中涉及的网元包括：基站和UE，基站是网络侧的一种用来发送或接收信号的实体。UE可以是任意的终端。如UE是机器类通信的用户设备。
首先以终端设备处于ModeA模式为例。
在一个实施例中，由于EDT Msg3/legacy Msg3初传调度时，只用
Figure PCTCN2018086617-appb-000060
比特，其中高
Figure PCTCN2018086617-appb-000061
比特指示系统带宽上的窄带索引；对于legacy Msg3初传调度，低4比特指示窄带内的1,2，3或者6个PRB的调度；对于EDT Msg3初传调度，低4比特指示窄带内的2,3，4,5或者6个PRB的调度。因此资源分配字段剩余1比特未使用。
因此利用DCI Format6-0A中的resource allocation字段的
Figure PCTCN2018086617-appb-000062
比特的低5比特中的最低/高比特用于指示EDT是否回退，例如：
如果最低/高比特为0：指示EDT Msg3重传，此时DCI为EDT Msg3的重传调度信息；
如果最低/高比特为1：指示回退到legacy Msg3，此时DCI为legacy Msg3的调度信息。
在另一个实施例中，根据现有标准，MAC RAR中legacy sg3初传调度时，MCS的范围为0～7；EDT Msg3调度时，不需要指示MCS(网络配置最大的TBS，UE采用最大的TBS或者与最大TBS对应的预设的集合中选择一个TBS用于发送EDT Msg3,基站接收时盲检TBS)。因此采用预设的MCS的状态指示EDT的回退，MCS index：0～7指示回退；MCS index：8～15指示EDT重传调度。
在另一个实施例中，根据网络设备在DCI中配置的TBS和预设的/系统消息/移动控制消息广播的TBS对比，如果小于或等于预设的/系统消息/移动控制消息广播的TBS，回退到legacy Msg3；否则，传输EDT Msg3。
在另一个实施例中，为了支持sub-PRB资源分配，资源分配字段新增2或3比特。因此可以采用新增的用于指示sub-PRB资源分配的比特用于指示EDT回退与否。
在另一个实施例中，由于基站在调度EDT Msg3或者legacy Msg 3时，基站不会调度UE上报信道状态信息(channel state information，CSI)，利用DCI Format 6-0A中的CSI字段指示EDT Msg3的重传或者回退到legacy Msg3。
在另一个实施例中，由于基站在调度EDT Msg3或者legacy Msg 3时，基站不会调度UE发送探测参考信号(Sounding Reference Signal,SRS)，利用DCI Format 6-0A中的SRS请求字段指示EDT Msg3的重传或者回退到legacy Msg3。
在另一个实施例中，将现有的MCS状态由16种限制到12种，窄带内资源分配的状态仍然保持21种，此时12x21＝252种，用MCS和资源分配联合编码，需要8比特。相对于现在的MCS 4比特，窄带内资源分配5比特，节省1比特。用节省的1比特做为flag。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的；如果该flag为1，且指示的MCS索引为预定义的A值，那么此时指示EDT重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为12个MCS值中的另外11个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据MCS索引确定。
通过前述的举例说明可知，基站和UE侧的存储器需要存储预设的用于指示回退的MCS的状态。基站和UE侧需要执行实施例1～3的对比和判决过程。在不额外增加DCI的开销的情况下，支持提前回退到legacy Msg3，降低时延，节省功耗。
接下来以终端设备处于ModeB模式为例。
在一个实施例中，由于MCS只支持0～10，现有标准中有5种MCS状态unused，5个unused MCS状态中的某一种或者某几种用于指示EDT的回退。
在另一个实施例中，根据网络设备在DCI中配置的TBS和预设的/系统消息/移动控制消息广播的TBS对比，如果小于或等于预设的/系统消息/移动控制消息广播的TBS，回退到legacy Msg3；否则，传输EDT Msg3。
在另一个实施例中，为了支持sub-PRB资源分配，资源分配字段新增2或3比特。因此可以采用新增的用于指示sub-PRB资源分配的比特用于指示EDT回退与否。
在另一个实施例中，将现有的MCS状态由11种限制到8种，窄带内资源分配的状态仍然保持8种，此时8x8＝64种，用MCS和资源分配联合编码，需要6比特。相对于现在的MCS 4比特，窄带内资源分配3比特，节省1比特。用节省的1比特做为flag。如果该flag为0，指示EDT重传，且重传的TBS大小是UE自适应地选择的；如果该flag为1，且指示的MCS索引为预定义的B值，那么此时指示EDT重传，且重传的TBS是网络设备配置的最大TBS；如果该flag为1，且指示的MCS索引为8个MCS值中的另外7个，那么此时指示EDT Msg3回退到legacy Msg3。此时，legacy Msg3的传输块大小根据MCS索引确定。
通过前述的举例说明可知，基站和UE侧的存储器需要存储用于指示回退的MCS的状态；基站和UE侧需要执行对比和判决过程。在不额外增加DCI的开销的情况下，支持提前回退到legacy Msg3，降低时延，节省功耗。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
为便于更好的实施本发明实施例的上述方案，下面还提供用于实施上述方案的相关装置。
本申请实施例提供一种终端设备，如图6所示，终端设备600包括：
接收模块601，用于接收第一下行控制信息，所述第一下行控制信息包括所述终端设备传输第一数据的调度信息；
处理模块602，用于获取所述第一下行控制信息中的指示信息，所述指示信息用于指示所述终端设备传输的第一数据是第一消息3或者第二消息3，其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述终端设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
发送模块603，用于根据所述调度信息和所述指示信息传输所述第一数据。
本申请实施例提供一种网络设备，如图7所示，网络设备700包括：
处理模块702，用于通过发送模块701发送第一下行控制信息，所述第一下行控制信息包括终端设备传输第一数据的调度信息；
所述第一下行控制信息包括指示信息，所述指示信息用于指示所述终端设备传输的第一数据是第一消息3或者第二消息3，其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述终端设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
处理模块702，用于通过接收模块703接收所述终端设备传输的所述第一数据。
在本申请的一些实施例中，
所述终端设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A；
所述第一下行控制信息还包括第一资源分配字段，所述第一资源分配字段至少包括
Figure PCTCN2018086617-appb-000063
比特，其中，所述第一资源分配字段中的
Figure PCTCN2018086617-appb-000064
比特指示上行带宽中的窄带索引，所述第一资源分配字段中的4比特指示所述窄带索引对应的窄带内的资源块分配，所述第二下行控制信息还包括第二资源分配字段，所述第二资源分配字段至少包括
Figure PCTCN2018086617-appb-000065
比特，其中，所述第二资源分配字段中的
Figure PCTCN2018086617-appb-000066
比特指示上行带宽中的窄带索引，所述第二资源分配字段中的5比特指示所述窄带索引对应的窄带内的资源块分配；
和/或,所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为H比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为H+1比特,所述H是大于或等于1的正整数；
和/或，所述第一下行控制信息不包括信道状态信息CSI请求字段，所述第二下行控制 信息包括CSI请求字段；
和/或，所述第一下行控制信息不包括探测参考信号SRS请求字段，所述第二下行控制信息包括所述SRS请求字段。
在本申请的一些实施例中，
所述终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为T比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为T+1比特,所述T是大于或等于1的正整数。
在本申请的一些实施例中，
所述终端设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
所述第一下行控制信息还包括第一调制编码方式字段，所述指示信息由所述第一调制编码方式字段承载，所述第一调制编码方式字段的比特长度为4比特，所述第一调制编码方式字段的比特状态为0000～1010中的状态时，所述终端设备传输的所述第一数据是所述第一消息3，所述第一调制编码方式字段的比特状态为1011～1111中的状态时，所述终端设备传输的所述第一数据是所述第二消息3。
在本申请的一些实施例中，
所述指示信息的比特状态为第一比特状态时，所述终端设备按照第一TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述终端设备发送所述第一消息3或者所述终端设备按照第二TBS发送所述第二消息3；或，
所述指示信息的比特状态为第一比特状态时，所述终端设备按照第二TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述终端设备发送所述第一消息3或者所述终端设备按照第一TBS发送所述第二消息3；
其中所述第一TBS是根据所述第二TBS确定的TBS，所述第二TBS是网络设备配置的TBS。
在本申请的一些实施例中，
所述指示信息的比特状态为第一比特状态时，所述第一下行控制信息的资源分配字段至少包括
Figure PCTCN2018086617-appb-000067
比特，其中，所述资源分配字段中的
Figure PCTCN2018086617-appb-000068
比特指示上行带宽上的窄带索引，所述资源分配字段中的X比特指示窄带内的资源分配；
所述指示信息的比特状态为第二比特状态时，所述第一下行控制信息的资源分配字段至少包含
Figure PCTCN2018086617-appb-000069
比特，所述资源分配字段中的
Figure PCTCN2018086617-appb-000070
比特指示上行带宽上的窄带索引，所述第一下行控制信息中还包含Y比特，所述Y比特的M×L种状态中的每一种状态指示了所述终端设备传输的所述第一数据是所述第一消息3，且所述Y比特的M×L种状态中的每一种状态都指示了调制编码方式和窄带内资源分配，其中所述窄带内资源分配共有M种资源分配方式，所述调制编码方式共有L种索引,所述M和L为正整数，所述Y比特中除所述M×L种状态外的其他状态中的一种或多种状态指示了所述终端设备传输的所述第一数据是所述第二消息3。
在本申请的一些实施例中，
所述第一下行控制信息的格式是下行控制信息DCI格式format 6-0A；或，
所述第一下行控制信息的格式是DCI format 6-0B。
通过前述实施例对本申请的举例说明可知，终端设备接收到第一下行控制信息，第一下行控制信息包括终端设备传输第一数据的调度信息，第二下行控制信息包括终端设备传输第二数据的调度信息，并且第一下行控制信息包括有指示信息，而第二下行控制信息不包含所述指示信息，第一下行控制信息的格式和第二下行控制信息的格式相同，通过第一下行控制信息中的指示信息，可以指示终端设备传输的第一数据是第一消息3或者第二消息3。因此本申请实施例中针对每次传输的第一下行控制信息都可以通过指示信息来确定传输的第一数据是第一消息3或者第二消息3，无需传输次数达到网络配置的最大HARQ重传次数，因此可以确定是否从传输第二消息3回退到传输第一消息3，从而减少回退时延，节省终端设备的功耗。
本申请实施例还提供一种网络设备，包括：发送模块和接收模块，其中，
所述发送模块，用于发送下行控制信息。其中，下行控制信息包括终端设备传输第一数据的调度信息。
在本申请实施例中，网络设备发送下行控制信息，该下行控制信息包括有调度信息，该调度信息可用于调度终端设备即将传输的第一数据，其中，该第一数据是指终端设备传输的消息。消息3指的是随机接入过程中的第三条消息，该消息3中可以携带用户数据。例如，消息3可以支持数据提前传输。针对终端设备可以发送的多种消息可以分别配置相应的资源。例如随机接入过程中的消息3至少可以分为两种不同类型，例如第一消息3和第二消息3，因此终端设备可以发送两种不同的消息3，网络设备针对发送不同的消息3可以分别配置相应的资源。例如，第一消息3是不携带用户数据的消息3，第二消息3是携带用户数据的消息3。例如第一消息3可以是正常的消息3传输，又如，第一消息3可以是不提前进行数据传输的消息3。例如第二消息3是提前进行数据传输的消息3。这里的数据可以是终端设备的业务数据。或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS。
接收模块，用于第一TBS小于或者等于第二TBS时，接收终端设备传输的第一消息3。第一TBS大于第二TBS时，接收终端设备传输的第二消息3。
其中，第二TBS为预设的传输块大小、或者系统信息配置的传输块大小、或者无线资源控制信令配置的传输块大小。
本申请实施例还提供一种终端设备，包括：接收模块，处理模块和发送模块，其中，
接收模块，用于接收下行控制信息，下行控制信息包括终端设备传输第一数据的调度信息。
在本申请实施例中，终端设备首先接收来自网络设备发送的下行控制信息，该下行控制信息包括有调度信息，该调度信息可用于调度终端设备即将传输的第一数据，其中，该第一数据是指终端设备传输的消息。消息3指的是随机接入过程中的第三条消息，该消息3中可以携带用户数据。例如，消息3可以支持数据提前传输。针对终端设备可以发送的多种 消息可以分别配置相应的资源。例如随机接入过程中的消息3至少可以分为两种不同类型，例如第一消息3和第二消息3，因此终端设备可以发送两种不同的消息3，网络设备针对发送不同的消息3可以分别配置相应的资源。例如，第一消息3是不携带用户数据的消息3，第二消息3是携带用户数据的消息3。例如第一消息3可以是正常的消息3传输，又如，第一消息3可以是不提前进行数据传输的消息3。例如第二消息3是提前进行数据传输的消息3。这里的数据可以是终端设备的业务数据。或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS。
处理模块，用于根据下行控制信息确定第一传输块大小TBS。
发送模块，用于第一TBS小于或者等于第二TBS时，传输第一数据，该第一数据是第一消息3。第一TBS大于第二TBS时，传输第一数据是第二消息3。
其中，第二TBS为预设的传输块大小、或者系统信息配置的传输块大小、或者无线资源控制信令配置的传输块大小。
需要说明的是，上述装置各模块/单元之间的信息交互、执行过程等内容，由于与本发明方法实施例基于同一构思，其带来的技术效果与本发明方法实施例相同，具体内容可参见本发明前述所示的方法实施例中的叙述，此处不再赘述。
本发明实施例还提供一种计算机存储介质，其中，该计算机存储介质存储有程序，该程序执行包括上述方法实施例中记载的部分或全部步骤。
如图8所示，为本申请实施例的又一种设备的结构示意图，该设备为终端设备，该终端设备可以包括：处理器131(例如CPU)、存储器132、发送器134和接收器133；发送器134和接收器133耦合至处理器131，处理器131控制发送器134的发送动作和接收器133的接收动作。存储器132可能包含高速RAM存储器，也可能还包括非易失性存储器NVM，例如至少一个磁盘存储器，存储器132中可以存储各种指令，以用于完成各种处理功能以及实现本申请实施例的方法步骤。可选的，本申请实施例涉及的终端设备还可以包括：电源135、通信总线136以及通信端口137中的一个或多个。接收器133和发送器134可以集成在终端设备的收发器中，也可以为终端设备上分别独立的收、发天线。通信总线136用于实现元件之间的通信连接。上述通信端口137用于实现终端设备与其他外设之间进行连接通信。
在本申请实施例中，上述存储器132用于存储计算机可执行程序代码，程序代码包括指令；当处理器131执行指令时，指令使处理器131执行上述方法实施例中终端设备的处理动作，使发送器134执行上述方法实施例中终端设备的发送动作，其实现原理和技术效果类似，在此不再赘述。
如图9所示，为本申请实施例的又一种设备的结构示意图，该设备为网络设备，该网络设备可以包括：处理器(例如CPU)141、存储器142、接收器143和发送器144；接收器143和发送器144耦合至处理器141，处理器141控制接收器143的接收动作和发送器144的发送动作。存储器142可能包含高速RAM存储器，也可能还包括非易失性存储器NVM，例如至少一个磁盘存储器，存储器142中可以存储各种指令，以用于完成各种处理功能以及实现本申请实施例的方法步骤。可选的，本申请实施例涉及的网络设备还可以包括：电 源145、通信总线146以及通信端口147中的一个或多个。接收器143和发送器144可以集成在网络设备的收发器中，也可以为网络设备上分别独立的收、发天线。通信总线146用于实现元件之间的通信连接。上述通信端口147用于实现网络设备与其他外设之间进行连接通信。
在本申请实施例中，上述存储器142用于存储计算机可执行程序代码，程序代码包括指令；当处理器141执行指令时，指令使处理器141执行上述方法实施例中网络设备的处理动作，使发送器144执行上述方法实施例中网络设备的发送动作，其实现原理和技术效果类似，在此不再赘述。
在另一种可能的设计中，当该装置为终端内的芯片时，芯片包括：处理单元和通信单元，所述处理单元例如可以是处理器，所述通信单元例如可以是输入/输出接口、管脚或电路等。该处理单元可执行存储单元存储的计算机执行指令，以使该终端内的芯片执行上述第一方面任意一项的无线通信方法。可选地，所述存储单元为所述芯片内的存储单元，如寄存器、缓存等，所述存储单元还可以是所述终端内的位于所述芯片外部的存储单元，如只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)等。
其中，上述任一处提到的处理器，可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制上述第一方面无线通信方法的程序执行的集成电路。
另外需说明的是，以上所描述的装置实施例仅仅是示意性的，其中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模块来实现本实施例方案的目的。另外，本申请提供的装置实施例附图中，模块之间的连接关系表示它们之间具有通信连接，具体可以实现为一条或多条通信总线或信号线。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本申请可借助软件加必需的通用硬件的方式来实现，当然也可以通过专用硬件包括专用集成电路、专用CPU、专用存储器、专用元器件等来实现。一般情况下，凡由计算机程序完成的功能都可以很容易地用相应的硬件来实现，而且，用来实现同一功能的具体硬件结构也可以是多种多样的，例如模拟电路、数字电路或专用电路等。但是，对本申请而言更多情况下软件程序实现是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在可读取的存储介质中，如计算机的软盘、U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述的方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。
所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。

Claims (20)

  1. 一种信息传输方法，其特征在于，所述方法包括：
    通信设备接收第一下行控制信息，所述第一下行控制信息包括所述通信设备传输第一数据的调度信息；
    所述通信设备获取所述第一下行控制信息中的指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3；
    其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
    所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
    所述通信设备根据所述调度信息和所述指示信息传输所述第一数据。
  2. 一种信息传输方法，其特征在于，所述方法包括：
    网络设备发送第一下行控制信息，所述第一下行控制信息包括通信设备传输第一数据的调度信息；
    所述第一下行控制信息包括指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3，其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
    所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
    所述网络设备接收所述通信设备传输的所述第一数据。
  3. 根据权利要求1或2所述的方法，其特征在于，
    所述通信设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A；
    所述第一下行控制信息还包括第一资源分配字段，所述第一资源分配字段至少包括
    Figure PCTCN2018086617-appb-100001
    比特，其中，所述第一资源分配字段中的
    Figure PCTCN2018086617-appb-100002
    比特指示上行带宽中的窄带索引，所述第一资源分配字段中的4比特指示所述窄带索引对应的窄带内的资源块分配，所述第二下行控制信息还包括第二资源分配字段，所述第二资源分配字段至少包括
    Figure PCTCN2018086617-appb-100003
    比特，其中，所述第二资源分配字段中的
    Figure PCTCN2018086617-appb-100004
    比特指示上行带宽中的窄带索引，所述第二资源分配字段中的5比特指示所述窄带索引对应的窄带内的资源块分配；
    和/或,所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为H比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为H+1比特,所述H是大于或等于1的正整数；
    和/或，所述第一下行控制信息不包括信道状态信息CSI请求字段，所述第二下行控制信息包括CSI请求字段；
    和/或，所述第一下行控制信息不包括探测参考信号SRS请求字段，所述第二下行控制信息包括所述SRS请求字段。
  4. 根据权利要求1或2所述的方法，其特征在于，
    所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
    所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为T比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为T+1比特,所述T是大于或等于1的正整数。
  5. 根据权利要求1或2所述的方法，其特征在于，
    所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
    所述第一下行控制信息还包括第一调制编码方式字段，所述指示信息由所述第一调制编码方式字段承载，所述第一调制编码方式字段的比特长度为4比特，所述第一调制编码方式字段的比特状态为0000～1010中的状态时，所述通信设备传输的所述第一数据是所述第一消息3，所述第一调制编码方式字段的比特状态为1011～1111中的状态时，所述通信设备传输的所述第一数据是所述第二消息3。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，
    所述指示信息的比特状态为第一比特状态时，所述通信设备按照第一TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第二TBS发送所述第二消息3；或，
    所述指示信息的比特状态为第一比特状态时，所述通信设备按照第二TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第一TBS发送所述第二消息3；
    其中所述第一TBS是根据所述第二TBS确定的TBS，所述第二TBS是网络设备配置的TBS。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，
    所述指示信息的比特状态为第一比特状态时，所述第一下行控制信息的资源分配字段至少包括
    Figure PCTCN2018086617-appb-100005
    比特，其中，所述资源分配字段中的
    Figure PCTCN2018086617-appb-100006
    比特指示上行带宽上的窄带索引，所述资源分配字段中的X比特指示窄带内的资源分配；
    所述指示信息的比特状态为第二比特状态时，所述第一下行控制信息的资源分配字段至少包含
    Figure PCTCN2018086617-appb-100007
    比特，所述资源分配字段中的
    Figure PCTCN2018086617-appb-100008
    比特指示上行带宽上的窄带索引，所述第一下行控制信息中还包含Y比特，所述Y比特的M×L种状态中的每一种状态指示了所述通信设备传输的所述第一数据是所述第一消息3，且所述Y比特的M×L种状态中 的每一种状态都指示了调制编码方式和窄带内资源分配，其中所述窄带内资源分配共有M种资源分配方式，所述调制编码方式共有L种索引,所述M和L为正整数，所述Y比特中除所述M×L种状态外的其他状态中的一种或多种状态指示了所述通信设备传输的所述第一数据是所述第二消息3。
  8. 根据权利要求1至7中任一项权利要求所述的方法，其特征在于，
    所述第一下行控制信息的格式是下行控制信息DCI格式format 6-0A；或，
    所述第一下行控制信息的格式是DCI format 6-0B。
  9. 一种通信设备，其特征在于，所述通信设备包括：
    接收模块，用于接收第一下行控制信息，所述第一下行控制信息包括所述通信设备传输第一数据的调度信息；
    处理模块，用于获取所述第一下行控制信息中的指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3；
    其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
    所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
    发送模块，用于根据所述调度信息和所述指示信息传输所述第一数据。
  10. 一种网络设备，其特征在于，所述网络设备包括：
    处理模块，用于通过发送模块发送第一下行控制信息，所述第一下行控制信息包括通信设备传输第一数据的调度信息；
    所述第一下行控制信息包括指示信息，所述指示信息用于指示所述通信设备传输的第一数据是第一消息3或者第二消息3，其中所述第一消息3是不携带用户数据的消息3，所述第二消息3是携带用户数据的消息3；或，所述第一消息3是携带用户数据的消息3，所述第二消息3是携带用户数据的消息3，且所述第一消息3传输所用的传输块大小TBS是所述通信设备在初始消息3传输时所用的TBS,所述第二消息3传输所用的TBS是网络设备配置的TBS；
    所述指示信息的比特长度为1比特；所述第一下行控制信息的格式和第二下行控制信息的格式相同，所述第二下行控制信息包括所述通信设备传输第二数据的调度信息，且所述第二下行控制信息不包含所述指示信息；
    所述处理模块，用于通过接收模块接收所述通信设备传输的所述第一数据。
  11. 根据权利要求9或10所述的设备，其特征在于，
    所述通信设备处于覆盖增强等级0、覆盖增强等级1、或覆盖增强模式A；
    所述第一下行控制信息还包括第一资源分配字段，所述第一资源分配字段至少包括
    Figure PCTCN2018086617-appb-100009
    比特，其中，所述第一资源分配字段中的
    Figure PCTCN2018086617-appb-100010
    比特指示上行带宽中的窄带索引，所述第一资源分配字段中的4比特指示所述窄带索引对应的窄带内的资源块分 配，所述第二下行控制信息还包括第二资源分配字段，所述第二资源分配字段至少包括
    Figure PCTCN2018086617-appb-100011
    比特，其中，所述第二资源分配字段中的
    Figure PCTCN2018086617-appb-100012
    比特指示上行带宽中的窄带索引，所述第二资源分配字段中的5比特指示所述窄带索引对应的窄带内的资源块分配；
    和/或,所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为H比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为H+1比特,所述H是大于或等于1的正整数；
    和/或，所述第一下行控制信息不包括信道状态信息CSI请求字段，所述第二下行控制信息包括CSI请求字段；
    和/或，所述第一下行控制信息不包括探测参考信号SRS请求字段，所述第二下行控制信息包括所述SRS请求字段。
  12. 根据权利要求9或10所述的设备，其特征在于，
    所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
    所述第一下行控制信息还包括第一调制编码方式字段,所述第一调制编码方式字段的比特长度为T比特，所述第二下行控制信息还包括第二调制编码方式字段,所述第二调制编码方式字段的比特长度为T+1比特,所述T是大于或等于1的正整数。
  13. 根据权利要求9或10所述的设备，其特征在于，
    所述通信设备处于覆盖增强等级2、覆盖增强等级3、或覆盖增强模式B；
    所述第一下行控制信息还包括第一调制编码方式字段，所述指示信息由所述第一调制编码方式字段承载，所述第一调制编码方式字段的比特长度为4比特，所述第一调制编码方式字段的比特状态为0000～1010中的状态时，所述通信设备传输的所述第一数据是所述第一消息3，所述第一调制编码方式字段的比特状态为1011～1111中的状态时，所述通信设备传输的所述第一数据是所述第二消息3。
  14. 根据权利要求9至13中任一项所述的设备，其特征在于，
    所述指示信息的比特状态为第一比特状态时，所述通信设备按照第一TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第二TBS发送所述第二消息3；或，
    所述指示信息的比特状态为第一比特状态时，所述通信设备按照第二TBS发送所述第二消息3，所述指示信息的比特状态为第二比特状态时，所述通信设备发送所述第一消息3或者所述通信设备按照第一TBS发送所述第二消息3；
    其中所述第一TBS是根据所述第二TBS确定的TBS，所述第二TBS是网络设备配置的TBS。
  15. 根据权利要求9至14中任一项所述的设备，其特征在于，
    所述指示信息的比特状态为第一比特状态时，所述第一下行控制信息的资源分配字段至少包括
    Figure PCTCN2018086617-appb-100013
    比特，其中，所述资源分配字段中的
    Figure PCTCN2018086617-appb-100014
    比特指示上行带宽上的窄带索引，所述资源分配字段中的X比特指示窄带内的资源分配；
    所述指示信息的比特状态为第二比特状态时，所述第一下行控制信息的资源分配字段至少包含
    Figure PCTCN2018086617-appb-100015
    比特，所述资源分配字段中的
    Figure PCTCN2018086617-appb-100016
    比特指示上行带宽上的窄带索引，所述第一下行控制信息中还包含Y比特，所述Y比特的M×L种状态中的每一种状态指示了所述通信设备传输的所述第一数据是所述第一消息3，且所述Y比特的M×L种状态中的每一种状态都指示了调制编码方式和窄带内资源分配，其中所述窄带内资源分配共有M种资源分配方式，所述调制编码方式共有L种索引,所述M和L为正整数，所述Y比特中除所述M×L种状态外的其他状态中的一种或多种状态指示了所述通信设备传输的所述第一数据是所述第二消息3。
  16. 根据权利要求9至15中任一项权利要求所述的设备，其特征在于，
    所述第一下行控制信息的格式是下行控制信息DCI格式format 6-0A；或，
    所述第一下行控制信息的格式是DCI format 6-0B。
  17. 一种通信设备，其特征在于，所述通信设备包括：处理器，存储器；所述处理器、所述存储器之间进行相互的通信；
    所述存储器用于存储指令；
    所述处理器用于执行所述存储器中的所述指令，执行如权利要求1、3至8中任一项所述的方法。
  18. 一种网络设备，其特征在于，所述网络设备包括：处理器，存储器；所述处理器、所述存储器之间进行相互的通信；
    所述存储器用于存储指令；
    所述处理器用于执行所述存储器中的所述指令，执行如权利要求2至8中任一项所述的方法。
  19. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-8任意一项所述的方法。
  20. 一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如权利要求1-8任意一项所述的方法。
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