WO2019191911A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2019191911A1
WO2019191911A1 PCT/CN2018/081777 CN2018081777W WO2019191911A1 WO 2019191911 A1 WO2019191911 A1 WO 2019191911A1 CN 2018081777 W CN2018081777 W CN 2018081777W WO 2019191911 A1 WO2019191911 A1 WO 2019191911A1
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WO
WIPO (PCT)
Prior art keywords
sub
data
frequency resource
time
feedback information
Prior art date
Application number
PCT/CN2018/081777
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English (en)
Chinese (zh)
Inventor
唐海
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2018/081777 priority Critical patent/WO2019191911A1/fr
Priority to CN201880084841.1A priority patent/CN111543113B/zh
Publication of WO2019191911A1 publication Critical patent/WO2019191911A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • Embodiments of the present application relate to the field of communications and, more particularly, to methods and apparatus for data transmission.
  • the carrier on the licensed spectrum is used as the primary carrier, so as to avoid the carrier on the licensed spectrum as the secondary carrier.
  • the device provides services.
  • the communication device follows the "Listen Before Talk (LBT)" principle, that is, the communication device needs to perform channel detection before transmitting signals on the channel of the unlicensed spectrum.
  • LBT Listen Before Talk
  • the communication device can only perform signal transmission when the channel listening result is that the channel is idle; if the channel detection result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot perform signal transmission.
  • the channel detection bandwidth is consistent with the carrier bandwidth/data transmission bandwidth, for example, both are 20 MHz.
  • the channel detection bandwidth may be inconsistent with the carrier bandwidth/data transmission bandwidth, for example, assuming the channel When the detection bandwidth is 20MHz and the carrier bandwidth/data transmission bandwidth is 80MHz, the bandwidth of data transmission may be 40MHz, but the channel detection is only successful at 20MHz. In this case, how to transmit data is worthwhile. Research questions.
  • the embodiment of the present application provides a data transmission method and device, which can map data that can be independently decoded and fed back on at least two subbands when the channel detection bandwidth is inconsistent with the carrier bandwidth or the data transmission bandwidth of the system. Therefore, the channel access probability can be improved, and the data transmission delay on the unlicensed spectrum can be reduced.
  • a method of data transmission comprising:
  • the first device Determining, by the first device, a first time-frequency resource for transmitting the first data, where the first time-frequency resource occupies resources in at least two sub-bands in the frequency domain, where the at least two sub-bands include a first sub-band and a second sub-band
  • the first data is the data obtained by encoding the original information block, where the original information block is a transport block carried by a physical channel, the first data includes a first sub-data and a second sub-data, the first time-frequency resource
  • the resource occupied by the first sub-band is used to transmit the first sub-data
  • the resource occupied by the first time-frequency resource on the second sub-band is used to transmit the second sub-data;
  • the first device performs channel detection on the at least two sub-bands to determine a sub-band that is usable by the first device in the at least two sub-bands;
  • the first device sends the first data to the second device by using the resource occupied by the first time-frequency resource on the available sub-band.
  • the first device performs channel detection on at least two sub-bands to determine a sub-band that can be used by the first device in the at least two sub-bands, and further, the first device passes the first time-frequency resource.
  • the resources occupied on the available subbands transmit the first data to the second device, thereby improving the channel access probability and reducing the data transmission delay.
  • the first time-frequency resource may be a resource on the unlicensed spectrum.
  • the bandwidth of the first subband is less than or equal to the channel detection bandwidth
  • the bandwidth of the second subband is also less than or equal to the channel detection bandwidth
  • the first device is a terminal device or a network device
  • the second device is a network device or a terminal device.
  • first sub-data is data in the first data mapped on the first sub-band
  • second sub-data is data in the first data mapped on the second sub-band.
  • the original information block includes a first transport block and a second transport block, where the first sub-data includes the first transport block encoded data, and the second sub-data includes the second Transmit block encoded data.
  • the first device may transmit the data encoded by the first transport block by using resources occupied by the first time-frequency resource on the first sub-band, and pass the first time-frequency resource in the second sub-band.
  • the occupied resources transmit the second transport block encoded data, thereby ensuring that the data mapped on the first subband and the second subband can be independently decoded and fed back.
  • the original information block includes a first code block group (CBG) and a second CBG, where the first sub-data includes the first CBG encoded data, the second The sub data includes the second CBG encoded data, the first CBG includes an integer number of CBGs, and the second CBG includes an integer number of CBGs.
  • CBG code block group
  • the first device may transmit the first CBG encoded data by using resources occupied by the first time-frequency resource on the first sub-band, and by using the first time-frequency resource on the second sub-band.
  • the occupied resources transmit the second CBG encoded data, thereby ensuring that the data mapped on the first subband and the second subband can be independently decoded and fed back.
  • the first sub-data corresponds to a first modulation and coding scheme
  • the second sub-data corresponds to a second modulation and coding scheme. That is, the modulation coding scheme corresponding to the data on the first subband and the modulation coding scheme corresponding to the data on the second subband are independently determined.
  • the first device may use a modulation and coding scheme capable of independently reflecting the sub-band signal-to-noise ratio condition on at least two sub-bands, thereby improving the efficiency of data transmission.
  • the first device sends the first data to the second device by using the resource occupied by the first time-frequency resource on the available sub-band, including:
  • the first device sends the first sub-data to the second device by using the resource occupied by the first time-frequency resource on the first sub-band, and The resource occupied by the first time-frequency resource on the second sub-band sends the second sub-data to the second device;
  • the first device sends the first sub-data to the second device by using the resource occupied by the first time-frequency resource on the first sub-band. And discarding, sending, by the first time-frequency resource, the second sub-data on the resource occupied by the second sub-band; or
  • the first device discards that the first time-frequency resource sends the first sub-data on the resource occupied by the first sub-band, and passes the The resource occupied by the one-time frequency resource on the second sub-band sends the second sub-data to the second device; or
  • the first device discards that the first time-frequency resource sends the first sub-data on the resource occupied by the first sub-band, and discards in the first The first time frequency resource sends the second sub data on the resource occupied by the second subband.
  • the first sub-band corresponds to the first feedback information
  • the second sub-band corresponds to the second feedback information
  • the first feedback information and/or the second feedback information is a hybrid automatic retransmission.
  • Request Hybrid Automatic Repeat reQuest, HARQ
  • HARQ Hybrid Automatic Repeat reQuest
  • the first feedback information is HARQ feedback information
  • the status of the first feedback information is Negative Acknowledgement (NACK) or Discontinuous Transmission (Discontinuous Transmission) , DTX); and / or,
  • the second feedback information is HARQ feedback information. If the second sub-band is unavailable, the status of the second feedback information is NACK or DTX.
  • the first device receives the feedback information of the second device for the first sub-band as an ACK, and the first device processes the ACK as a NACK or DTX.
  • the first device receives the feedback information of the second device for the second sub-band as ACK, and the first device processes the ACK as NACK or DTX.
  • the first feedback information may include one or more feedback information.
  • the first feedback information includes three HARQ feedback information, which respectively correspond to different CBGs.
  • the second feedback information may also include one or more feedback information.
  • the method further includes:
  • the first device receives the first feedback information sent by the second device, where the first feedback information is used to determine data transmission of the first device on the second time-frequency resource, where the second time-frequency resource is later than The first time-frequency resource.
  • the first feedback information is used to determine data transmission of the first device on the second time-frequency resource, including at least one of the following situations:
  • the first feedback information is an Acknowledgement (ACK), and the first device sends new transmission data on the second time-frequency resource;
  • ACK Acknowledgement
  • the first feedback information is a NACK and/or a DTX, and the first device sends the retransmission data corresponding to the first sub-data on the second time-frequency resource;
  • the first feedback information is the first measurement information
  • the first device sends data according to the first measurement information by using the resource occupied by the second time-frequency resource in the first sub-band, where the first measurement information includes the Channel State Information (CSI) on the first subband, Channel State Information Reference Signal (CSI-RS) resource identifier on the first subband, and the first subband At least one of the strongest layer information of the signal.
  • CSI Channel State Information
  • CSI-RS Channel State Information Reference Signal
  • the first device may retransmit the retransmission data corresponding to the first sub data, or may only retransmit the data corresponding to the NACK/DTX.
  • the method further includes:
  • the second feedback information is used to determine data transmission of the first device on the third time-frequency resource, including at least one of the following situations:
  • the second feedback information is an ACK, and the first device sends the newly transmitted data on the third time-frequency resource;
  • the second feedback information is a NACK and/or a DTX, and the first device sends the retransmission data corresponding to the second sub-data on the third time-frequency resource;
  • the second feedback information is the second measurement information
  • the first device sends data according to the resource that is occupied by the third time-frequency resource in the second sub-band according to the second measurement information, where the second measurement information includes the At least one of a CSI on the second subband, a CSI-RS resource identifier on the second subband, and a signal strongest layer information on the second subband.
  • the first device determines a first time-frequency resource for transmitting the first data, including:
  • the first device determines the first time-frequency resource according to the scheduling information.
  • the scheduling information is Downlink Control Information (DCI), Radio Resource Control (RRC) signaling, and Media Access Control Element (MAC).
  • DCI Downlink Control Information
  • RRC Radio Resource Control
  • MAC Media Access Control Control Element
  • a method of data transmission comprising:
  • the first time-frequency resource occupies resources in the at least two sub-bands in the frequency domain, where the at least two sub-bands include the first sub-band and a second sub-band, the first data is data obtained by encoding the original information block, the original information block is a transport block carried by a physical channel, and the first data includes a first sub-data and a second sub-data, the first The resource occupied by the time-frequency resource on the first sub-band is used to receive the first sub-data, and the resource occupied by the first time-frequency resource on the second sub-band is used to receive the second sub-data;
  • the second device demodulates the at least two sub-bands respectively, and sends feedback information to the first device according to the demodulation result, where the feedback information indicates data transmitted on each sub-band occupied by the first time-frequency resource. Whether it was successfully received.
  • the second device separately demodulates at least two sub-bands, and sends, according to the demodulation result, whether the data transmitted on each sub-band occupied by the first time-frequency resource is sent to the first device.
  • the feedback information that is successfully received thereby achieving independent demodulation of data mapped on each of the at least two subbands, thereby improving channel access probability and reducing data transmission delay.
  • the original information block includes a first transport block and a second transport block, where the first sub-data includes the first transport block encoded data, and the second sub-data includes the second Transmit block encoded data.
  • the original information block includes a first CBG and a second CBG, where the first sub-data includes the first CBG encoded data, and the second sub-data includes the second CBG encoded Data, the first CBG includes an integer number of CBGs, and the second CBG includes an integer number of CBGs.
  • the first sub-data corresponds to a first modulation and coding scheme
  • the second sub-data corresponds to a second modulation and coding scheme
  • the feedback information includes first feedback information and second feedback information, where the first sub-band corresponds to the first feedback information, and the second sub-band corresponds to the second feedback information, where the A feedback information and/or the second feedback information is at least one of HARQ feedback information and measurement information.
  • the first device sends feedback information to the second device according to the demodulation result, including:
  • the second device sends the first feedback information to the first device according to the demodulation result of the first sub-band, where the first feedback information is at least one of ACK, NACK, DTX, and first measurement information.
  • the first measurement information includes at least one of a CSI on the first subband, a CSI-RS resource identifier on the first subband, and a signal strongest layer information on the first subband.
  • the second device sends the first feedback information to the first device according to the demodulation result for the first sub-band, including:
  • the second device detects the demodulation reference signal on the first subband, and the first subdata transmitted on the first subband is decoded correctly, the second device feeds back an ACK to the first device. / or the first measurement information; or
  • the second device detects the demodulation reference signal on the first subband, and the first subdata transmitted on the first subband is decoded incorrectly, the second device feeds back the NACK to the first device and / or the first measurement information; or
  • the second device If the second device does not detect the demodulation reference signal on the first subband, the second device feeds back DTX to the first device.
  • the first feedback information is an ACK
  • the first feedback information is used to indicate that the first device sends the newly transmitted data on the second time-frequency resource
  • the first feedback information is a NACK and/or a DTX
  • the first feedback information is used to indicate that the first device sends the retransmission data corresponding to the first sub-data on the second time-frequency resource
  • the first feedback information is used to indicate that the first device sends data according to the first measurement information by using resources occupied by the second time-frequency resource on the first sub-band;
  • the second time-frequency resource is later than the first time-frequency resource.
  • the first device sends feedback information to the second device according to the demodulation result, including:
  • the second device sends the second feedback information to the first device according to the demodulation result of the second sub-band, where the second feedback information is at least one of ACK, NACK, DTX, and second measurement information.
  • the second measurement information includes at least one of a CSI on the second subband, a CSI-RS resource identifier on the second subband, and a signal strongest layer information on the second subband.
  • the second device sends the second feedback information to the first device according to the demodulation result for the second sub-band, including:
  • the second device If the second device detects the demodulation reference signal on the second subband, and the second subdata transmitted on the second subband is decoded correctly, the second device feeds back the ACK to the first device. / or the second measurement information; or
  • the second device If the second device detects the demodulation reference signal on the second subband, and the second subdata transmitted on the second subband is decoded incorrectly, the second device feeds back the NACK to the first device and / or the second measurement information; or
  • the second device If the second device does not detect the demodulation reference signal on the second subband, the second device feeds back DTX to the first device.
  • the second feedback information is an ACK
  • the second feedback information is used to indicate that the first device sends the newly transmitted data on the third time-frequency resource
  • the second feedback information is NACK and/or DTX
  • the second feedback information is used to indicate that the first device sends the retransmission data corresponding to the second sub-data on the third time-frequency resource
  • the second feedback information is used to indicate that the first device sends data according to the resource occupied by the third time-frequency resource on the second sub-band according to the second measurement information;
  • the third time-frequency resource is later than the first time-frequency resource.
  • the method before the second device receives the first data sent by the first device on the first time-frequency resource, the method further includes:
  • the second device sends scheduling information to the first device, where the scheduling information is used to determine the first time-frequency resource used for transmitting the first data.
  • the scheduling information is one of DCI, RRC signaling, and MAC CE signaling.
  • an apparatus for data transmission for performing the method of any of the first aspect or the first aspect of the first aspect.
  • the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • an apparatus for data transmission comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the first aspect or the first aspect of the first aspect.
  • an apparatus for data transmission for performing the method of any of the foregoing second aspect or any of the possible implementations of the second aspect.
  • the apparatus comprises means for performing the method of any of the possible implementations of the second aspect or the second aspect described above.
  • an apparatus for data transmission comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the possible implementations of the second aspect or the second aspect above.
  • a computer storage medium for storing computer software instructions for performing the method of any of the above first aspect or any of the possible implementations of the first aspect, comprising program.
  • a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any of the above-described first aspect or any of the alternative implementations of the first aspect.
  • a ninth aspect a computer storage medium for storing computer software instructions for performing the method of any of the above second aspect or any of the possible implementations of the second aspect, comprising program.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the alternative aspects of the second aspect or the second aspect.
  • FIG. 1 is a schematic flowchart of a method of data transmission according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an example of a method of data transmission according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a method for data transmission according to another embodiment of the present application.
  • FIG. 4 is a schematic block diagram of an apparatus for data transmission in accordance with an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of an apparatus for data transmission according to another embodiment of the present application.
  • FIG. 6 is a schematic block diagram of an apparatus for data transmission according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of an apparatus for data transmission according to another embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Code Wideband Code Division Multiple Access
  • Division Multiple Access WCDMA
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Code Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • NR system evolution system LTE-based access to unlicensed spectrum
  • NR-U Universal Mobile Telecommunication System
  • UMTS Wireless Local Area Networks
  • WLAN Wireless Fidelity
  • next-generation communication systems or other communication systems.
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, or may be applied to a Dual Connectivity (DC) scenario, and may also be applied to a Standalone (SA) fabric. Net scene.
  • CA Carrier Aggregation
  • DC Dual Connectivity
  • SA Standalone
  • the embodiment of the present application does not limit the spectrum of the application.
  • the embodiment of the present application can be applied to an authorized spectrum, and can also be applied to an unlicensed spectrum.
  • the embodiments of the present application describe various embodiments in combination with a network device and a terminal device, where the terminal device may also be referred to as a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, and a remote location.
  • UE User Equipment
  • Station remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • the terminal device can be a station in the WLAN (STAION, ST), which can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, and a personal digital processing.
  • WLAN STAION, ST
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • a handheld device with wireless communication capabilities a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a next-generation communication system, such as a terminal device in an NR network or Terminal equipment in the future evolution of the Public Land Mobile Network (PLMN) network.
  • PLMN Public Land Mobile Network
  • the terminal device may also be a wearable device.
  • a wearable device which can also be called a wearable smart device, is a general term for applying wearable technology to intelligently design and wear wearable devices such as glasses, gloves, watches, clothing, and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are more than just a hardware device, but they also implement powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-size, non-reliable smartphones for full or partial functions, such as smart watches or smart glasses, and focus on only one type of application, and need to work with other devices such as smartphones. Use, such as various smart bracelets for smart signs monitoring, smart jewelry, etc.
  • the network device may be a device for communicating with the mobile device, and the network device may be an Access Point (AP) in the WLAN, a Base Transceiver Station (BTS) in GSM or CDMA, or may be in WCDMA.
  • the base station (NodeB, NB) may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or an in-vehicle device, a wearable device, and a network device (gNB) in the NR network. Or a network device or the like in a future evolved PLMN network.
  • the network device provides a service for the cell
  • the terminal device communicates with the network device by using a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell
  • the cell may be a network device (for example, The corresponding cell of the base station, the cell may belong to the macro base station, or may belong to the base station corresponding to the small cell, where the small cell may include: a metro cell, a micro cell, and a pico cell. Cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the physical channel includes a downlink physical channel and an uplink physical channel.
  • the downlink physical channel may include a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (EPDCCH), and a physical downlink shared channel (PDSCH).
  • the downlink reference signal may include a downlink synchronization signal (Synchronization Signal), a phase tracking reference signal (Phase Tracking Reference Signal (PT-RS), a downlink demodulation reference signal (DMRS), and a channel state information reference signal (Channel State Information).
  • the downlink synchronization signal can be used for communication equipment access network and radio resource management measurement
  • the downlink DMRS can be used for downlink channel demodulation
  • the CSI-RS can be used for downlink channel measurement and downlink time
  • PT-RS can also be used for downlink channel measurement, downlink time-frequency synchronization or phase tracking.
  • the downlink physical channel or the downlink reference signal with the same name and different functions may be included in the embodiment of the present application, and may also include a downlink physical channel or a downlink reference signal that is different from the above name and has the same function. Not limited.
  • the uplink physical channel in the embodiment of the present application may include a physical random access channel (Physical Random Access CHannel) (PRACH), a physical uplink control channel (Physical Uplink Control CHannel), and a physical uplink shared channel (Physical Uplink Shared CHannel). , PUSCH) and so on.
  • the uplink reference signal may include an uplink DMRS, a Sounding Reference Signal (SRS), a PT-RS, and the like.
  • the uplink DMRS can be used for demodulation of the uplink channel
  • the SRS can be used for uplink channel measurement, uplink time-frequency synchronization or phase tracking
  • the PT-RS can also be used for uplink channel measurement, uplink time-frequency synchronization or phase tracking.
  • the uplink physical channel or the uplink reference signal with the same name and different functions may be included in the embodiment of the present application, and may also include an uplink physical channel or an uplink reference signal that is different from the above name and has the same function. Not limited.
  • FIG. 1 to FIG. 3 are schematic flowcharts of a method for data transmission according to an embodiment of the present application, showing details of the method.
  • the communication steps or operations, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the various operations in FIGS. 1 through 3.
  • FIGS. 1 through 3 may be performed in a different order than that presented in FIGS. 1 through 3, respectively, and it is possible that not all operations in FIGS. 1 through 3 are to be performed.
  • FIG. 1 is a schematic flowchart of a method 100 for data transmission according to an embodiment of the present application. As shown in FIG. 1, the method 100 may include the following content:
  • the first device determines a first time-frequency resource for transmitting the first data, where the first time-frequency resource occupies resources in at least two sub-bands in the frequency domain, where the at least two sub-bands include a first sub-band and a first a second sub-band, the first data is data obtained by encoding the original information block, the original information block is a transport block carried by a physical channel, and the first data includes a first sub-data and a second sub-data, the first time The resource occupied by the frequency resource on the first sub-band is used to transmit the first sub-data, and the resource occupied by the first time-frequency resource on the second sub-band is used to transmit the second sub-data.
  • the first device performs channel detection on the at least two sub-bands to determine a sub-band that is usable by the first device in the at least two sub-bands.
  • the first device sends the first data to the second device by using the resource occupied by the first time-frequency resource on the available sub-band.
  • the first device is a terminal device or a network device
  • the second device is a network device or a terminal device.
  • the first data is uplink data
  • the at least two sub-bands belong to one PUSCH channel or one PUCCH channel
  • the terminal device uses the first time-frequency resource in the available device.
  • the resources occupied on the subband send the uplink data to the network device.
  • the first device when the first device is a network device, the first data is downlink data, the at least two sub-bands belong to one PDSCH channel, and the network device passes the first time-frequency resource on the available sub-band.
  • the occupied resources send the downlink data to the terminal device.
  • the first time-frequency resource may be a resource on the unlicensed spectrum.
  • the first time-frequency resource occupies part or all of the at least two sub-bands.
  • the bandwidth of the first subband and/or the second subband may be an integer multiple of 20 MHz, and the bandwidth of the first subband may be the same as or different from the bandwidth of the second subband.
  • the bandwidth of the first sub-band is 20 MHz, and the bandwidth of the second sub-band is 40 MHz.
  • the bandwidth of the first subband and/or the second subband is consistent with the channel detection bandwidth.
  • the size of the resource occupied by the first time-frequency resource on the first sub-band and the size of the resource occupied by the first time-frequency resource on the second sub-band may be the same or different.
  • first sub-data is data in the first data mapped on the first sub-band
  • second sub-data is data in the first data mapped on the second sub-band.
  • the terminal device or the network device needs to send the first data by using resources occupied by the first time-frequency resource on the at least two sub-bands, first performing channel detection on the at least two sub-bands to determine the at least two Whether the sub-band is currently in an idle state, or whether the at least two sub-bands are currently used by other devices, and then determining that the terminal device or the network device is in an idle state, or is not used by other devices (ie, the channel is idle)
  • the used subband finally transmits the first data to the terminal device or the network device by using the resource occupied by the first time-frequency resource on the available subband.
  • the first device performs channel detection on the first subband and the second subband
  • the first device sends the first sub-data to the second device by using the resource occupied by the first time-frequency resource on the first sub-band, and The resource occupied by the first time-frequency resource on the second sub-band sends the second sub-data to the second device;
  • the first device sends the first sub-data to the second device by using the resource occupied by the first time-frequency resource on the first sub-band. And discarding, sending, by the first time-frequency resource, the second sub-data on the resource occupied by the second sub-band; or
  • the first device discards that the first time-frequency resource sends the first sub-data on the resource occupied by the first sub-band, and passes the The resource occupied by the one-time frequency resource on the second sub-band sends the second sub-data to the second device; or
  • the first device discards that the first time-frequency resource sends the first sub-data on the resource occupied by the first sub-band, and discards in the first The first time frequency resource sends the second sub data on the resource occupied by the second subband.
  • the original information block includes a first information block and a second information block, where the first sub-data includes data encoded by the first information block, and the second sub-data includes the second information.
  • Information block-encoded data wherein the first information block includes at least one transport block, or an integer number of code block groups in at least one transport block; the second information block includes at least one transport block, or at least one transport block An integer number of code block groups.
  • the original information block includes a first transport block (TB) and a second transport block, where the first sub-data includes data encoded by the first transport block, where The second subdata includes the data encoded by the second transport block.
  • TB transport block
  • the first sub-data includes data encoded by the first transport block
  • the second subdata includes the data encoded by the second transport block.
  • the first sub-data is the TB1 encoded data corresponding to the codeword 0
  • the second sub-data is the TB2 encoded data corresponding to the codeword 1
  • the first device can pass the first time-frequency resource in the first sub- Carrying the TB1 encoded data with the occupied resources, and transmitting the TB2 encoded data by the resources occupied by the first time-frequency resource on the second sub-band, thereby ensuring mapping on the first sub-band and the second sub-band Data can be decoded and fed back independently.
  • the original information block includes a first CBG and a second CBG, where the first sub-data includes the first CBG encoded data, and the second sub-data includes the second CBG
  • the encoded data, the first CBG includes an integer number of CBGs, and the second CBG includes an integer number of CBGs.
  • the first CBG may include an integer number of CBGs in TB1
  • the second CBG may also include an integer number of CBGs in TB1.
  • the CBG in the first CBG does not intersect with the CBG in the second CBG.
  • the CBG included in the first CBG and the second CBG may satisfy the following manner:
  • the first CBG and the second CBG may include an integer number of CBGs in TB1;
  • the first CBG and the second CBG may include an integer number of CBGs in TB2;
  • the first CBG may include an integer number of CBGs in TB1
  • the second CBG may include an integer number of CBGs in TB2;
  • the first CBG may include an integer number of CBGs in TB2
  • the second CBG may include an integer number of CBGs in TB1;
  • the first CBG may include m CBGs in TB1 and n CBGs in TB2, and the second CBG may include x CBGs in TB1 and y CBGs in TB2, and m, n, x, y is a positive integer;
  • the CBG in the first CBG does not intersect with the CBG in the second CBG.
  • the size of the first CBG (for example, the number of CBGs or CBs included in the first CBG) is determined according to the resources occupied by the first time-frequency resource in the first sub-band, and the size of the second CBG is according to the The time-frequency resource is determined by the resources occupied by the second sub-band, and the size of the first CBG and the size of the second CBG may be the same or different.
  • the first sub-data corresponds to a first modulation and coding scheme
  • the second sub-data corresponds to a second modulation and coding scheme
  • MCS Modulation and Coding Scheme
  • QPSK Quadrature Phase Shift Keying
  • 16QAM 16 Quadrature Amplitude Modulation
  • 64QAM 64QAM
  • 256QAM 256QAM
  • 1024QAM 1024QAM
  • the modulation order and/or the code rate corresponding to the first sub-data and the second sub-data are independently determined.
  • the first modulation coding scheme is determined based on a signal to noise ratio condition on the first subband
  • the second modulation coding scheme is determined based on a signal to noise ratio condition on the second subband.
  • the first modulation coding scheme may be the same as or different from the second modulation coding scheme. Therefore, the first device can use a modulation and coding scheme capable of independently reflecting the sub-band signal-to-noise ratio condition on at least two sub-bands, thereby improving the efficiency of data transmission.
  • the first sub-band corresponds to the first feedback information
  • the second sub-band corresponds to the second feedback information
  • the first feedback information and/or the second feedback information is HARQ feedback At least one of information and measurement information.
  • the feedback information may be HARQ feedback information corresponding to data transmitted on the first sub-band, or may be measurement information measured according to the reference signal on the first sub-band.
  • the first feedback information is HARQ feedback information, and if the first subband is unavailable, the state of the first feedback information is NACK or DTX; and/or,
  • the second feedback information is HARQ feedback information. If the second sub-band is unavailable, the status of the second feedback information is NACK or DTX.
  • the first device receives the feedback information of the second device for the first sub-band as an ACK, and the first device processes the ACK as a NACK or DTX. Similarly, if the second sub-band is unavailable, the first device receives the feedback information of the second device for the second sub-band as an ACK, and the first device processes the ACK as a NACK or DTX.
  • the first feedback information may include one or more feedback information.
  • the first feedback information includes three pieces of HARQ feedback information, which respectively correspond to different CBGs.
  • the second feedback information may also include one or more feedback information.
  • the first feedback information is HARQ feedback information
  • the first feedback information may be ACK, NACK, and DTX
  • the second feedback information is HARQ feedback.
  • Information if the second sub-band is available, the second feedback information may be ACK, NACK, DTX.
  • the method 100 further includes:
  • the first device receives the first feedback information sent by the second device, where the first feedback information is used to determine data transmission of the first device on the second time-frequency resource, where the second time-frequency resource is later than The first time-frequency resource.
  • the first feedback information is used to determine data transmission of the first device on the second time-frequency resource, including at least one of the following situations:
  • the first feedback information is an ACK, and the first device sends the newly transmitted data on the second time-frequency resource;
  • the first feedback information is a NACK and/or a DTX, and the first device sends the retransmission data corresponding to the first sub-data on the second time-frequency resource;
  • the first feedback information is the first measurement information
  • the first device sends data according to the first measurement information by using the resource occupied by the second time-frequency resource in the first sub-band, where the first measurement information includes the At least one of a CSI on the first subband, a CSI-RS resource identifier on the first subband, and a signal strongest layer information on the first subband.
  • the first device may retransmit the retransmission data corresponding to the first sub data, and may only retransmit the data corresponding to the NACK/DTX. .
  • the second time-frequency resource and the first time-frequency resource are both used for data transmission of the same HARQ process.
  • the second time-frequency resource may occupy resources on the first sub-band, and may also occupy resources on other sub-bands.
  • the CSI may include at least one of Precoding Matrix Indicators (PMI), Rank Indication (RI), and Channel Quality Indicator (CQI).
  • PMI Precoding Matrix Indicators
  • RI Rank Indication
  • CQI Channel Quality Indicator
  • the signal strongest layer is the layer with the best channel quality in the layer indicated by the RI.
  • the Redundant Version (RV) of the first transmission data corresponding to the first sub-data on the second time-frequency resource may be RV0, and the first device is in the first
  • the RV for transmitting the retransmission data corresponding to the first subdata on the second time frequency resource may be RV1 or RV2.
  • the method 100 further includes:
  • the second feedback information is used to determine data transmission of the first device on the third time-frequency resource, including at least one of the following situations:
  • the second feedback information is an ACK, and the first device sends the newly transmitted data on the third time-frequency resource;
  • the second feedback information is a NACK and/or a DTX, and the first device sends the retransmission data corresponding to the second sub-data on the third time-frequency resource;
  • the second feedback information is the second measurement information
  • the first device sends data according to the resource that is occupied by the third time-frequency resource in the second sub-band according to the second measurement information, where the second measurement information includes the At least one of a CSI on the second subband, a CSI-RS resource identifier on the second subband, and a signal strongest layer information on the second subband.
  • the first device may retransmit the retransmission data corresponding to the second sub data, and may only retransmit the data corresponding to the NACK/DTX. .
  • the third time-frequency resource and the first time-frequency resource are both used for data transmission of the same HARQ process.
  • the third time-frequency resource may occupy resources on the second sub-band, and may also occupy resources on other sub-bands.
  • the first device may determine the first time-frequency resource according to the scheduling information sent by the second device,
  • the scheduling information is used to determine the first time-frequency resource used to transmit the first data.
  • the foregoing second time-frequency resource and the third time-frequency resource may also be determined according to scheduling information sent by the second device.
  • the scheduling information is one of DCI, RRC signaling, and MAC CE signaling.
  • the first device may determine the first time according to the semi-static resource pre-configured to the first device.
  • the semi-static resource pre-configured to the first device Frequency resources.
  • the foregoing second time-frequency resource and the third time-frequency resource may also be determined according to a semi-static resource pre-configured to the first device.
  • the downlink transmission between the network device and the terminal device is taken as an example.
  • the network device schedules a first time-frequency resource for transmitting the first data, where the first time
  • the frequency resource occupies the first sub-band and the second sub-band in the frequency domain
  • the first data is data obtained by encoding the original information block, where the original information block is a transport block carried by the PDSCH, and the first data includes the first data.
  • the sub-data and the second sub-data, the resources occupied by the first time-frequency resource on the first sub-band are used to transmit the first sub-data, and the resources occupied by the first time-frequency resource on the second sub-band are used by The second sub data is transmitted.
  • the network device performs LBT detection on the first sub-band and the second sub-band respectively, and the LBT detection for the first sub-band is successful, and the LBT detection for the second sub-band fails.
  • the network device sends the first sub-data to the terminal device by using the resource occupied by the first time-frequency resource on the first sub-band.
  • the network device sends the second sub-data to the terminal device by using a third time-frequency resource.
  • the second time-frequency resource and the first time-frequency resource are both used for data transmission of the same HARQ process.
  • the first device performs channel detection on at least two sub-bands to determine a sub-band that is usable by the first device in the at least two sub-bands, and the first device is available through the first time-frequency resource.
  • the resources occupied on the subband send the first data to the second device.
  • the first device may map data that can be independently decoded and fed back on at least two subbands, thereby improving channel access probability and reducing data transmission delay on the unlicensed spectrum.
  • FIG. 3 is a schematic flowchart of a method 200 for data transmission according to another embodiment of the present application. As shown in FIG. 3, the method 200 includes the following content:
  • the second device receives, by using the first time-frequency resource, the first data sent by the first device, where the first time-frequency resource occupies resources in the at least two sub-bands in the frequency domain, where the at least two sub-bands include the first sub- And the second sub-band, the first data is data obtained by encoding the original information block, the original information block is a transport block carried by a physical channel, and the first data includes a first sub-data and a second sub-data, where The resource occupied by the first time-frequency resource on the first sub-band is used to receive the first sub-data, and the resource occupied by the first time-frequency resource on the second sub-band is used to receive the second sub-data.
  • the second device separately demodulates the at least two sub-bands, and sends feedback information to the first device according to the demodulation result, where the feedback information indicates that the transmission is performed on each sub-band occupied by the first time-frequency resource. Whether the data was successfully received.
  • the original information block includes a first transport block and a second transport block, where the first sub-data includes the first transport block encoded data, and the second sub-data includes the The second transport block encoded data.
  • the original information block includes a first CBG and a second CBG, where the first sub-data includes the first CBG encoded data, and the second sub-data includes the second CBG
  • the encoded data, the first CBG includes an integer number of CBGs, and the second CBG includes an integer number of CBGs.
  • the first sub-data corresponds to a first modulation and coding scheme
  • the second sub-data corresponds to a second modulation and coding scheme
  • the modulation and coding scheme may be used to determine a modulation order (QPSK, 16QAM, etc.) and/or a code rate, and the second device demodulates the first sub-data according to the first modulation and coding scheme, and according to the first The second modulation coding scheme demodulates the second sub-data.
  • the feedback information includes first feedback information and second feedback information, where the first sub-band corresponds to the first feedback information, and the second sub-band corresponds to the second feedback information,
  • the first feedback information and/or the second feedback information is at least one of HARQ feedback information and measurement information.
  • the second device sends the first feedback information to the first device according to a demodulation result for the first sub-band, where the first feedback information is ACK, NACK, DTX, At least one of the first measurement information, wherein the first measurement information includes a CSI on the first subband, a CSI-RS resource identifier on the first subband, and a signal on the first subband is strongest At least one of the layer information.
  • the second device if the second device detects the demodulation reference signal on the first subband, and the first subdata transmitted on the first subband is correctly decoded, the second device sends the second device to the first device. Feedback ACK and/or the first measurement information; or
  • the second device detects the demodulation reference signal on the first subband, and the first subdata transmitted on the first subband is decoded incorrectly, the second device feeds back the NACK to the first device and / or the first measurement information; or
  • the second device If the second device does not detect the demodulation reference signal on the first subband, the second device feeds back DTX to the first device.
  • the first feedback information is an ACK
  • the first feedback information is used to indicate that the first device sends the newly transmitted data on the second time-frequency resource
  • the first feedback information is a NACK and/or a DTX
  • the first feedback information is used to indicate that the first device sends the retransmission data corresponding to the first sub-data on the second time-frequency resource
  • the first feedback information is used to indicate that the first device sends data according to the first measurement information by using resources occupied by the second time-frequency resource on the first sub-band;
  • the second time-frequency resource is later than the first time-frequency resource.
  • the second device sends the second feedback information to the first device according to the demodulation result for the second sub-band, where the second feedback information is ACK, NACK, DTX, At least one of the second measurement information, wherein the second measurement information includes a CSI on the second subband, a CSI-RS resource identifier on the second subband, and a signal on the second subband is strongest At least one of the layer information.
  • the second device if the second device detects the demodulation reference signal on the second subband, and the second subdata transmitted on the second subband is correctly decoded, the second device sends the second device to the first device. Feedback ACK and/or the second measurement information; or
  • the second device If the second device detects the demodulation reference signal on the second subband, and the second subdata transmitted on the second subband is decoded incorrectly, the second device feeds back the NACK to the first device and / or the second measurement information; or
  • the second device If the second device does not detect the demodulation reference signal on the second subband, the second device feeds back DTX to the first device.
  • the second feedback information is an ACK
  • the second feedback information is used to indicate that the first device sends the newly transmitted data on the third time-frequency resource
  • the second feedback information is NACK and/or DTX
  • the second feedback information is used to indicate that the first device sends the retransmission data corresponding to the second sub-data on the third time-frequency resource
  • the second feedback information is used to indicate that the first device sends data according to the resource occupied by the third time-frequency resource on the second sub-band according to the second measurement information;
  • the third time-frequency resource is later than the first time-frequency resource.
  • the method before the second device receives the first data sent by the first device on the first time-frequency resource, the method further includes:
  • the second device sends scheduling information to the first device, where the scheduling information is used to determine the first time-frequency resource used for transmitting the first data.
  • the scheduling information is one of DCI, RRC signaling, and MAC CE signaling.
  • steps in the method 200 of data transmission may refer to corresponding steps in the method 100 of data transmission, and are not described herein again for brevity.
  • the second device separately demodulates at least two sub-bands, and sends, according to the demodulation result, whether the data transmitted on each sub-band occupied by the first time-frequency resource is sent to the first device.
  • the feedback information that is successfully received thereby achieving independent demodulation of data mapped on each of the at least two subbands, thereby improving channel access probability and reducing data transmission delay.
  • FIG. 4 shows a schematic block diagram of an apparatus 300 for data transmission in accordance with an embodiment of the present application.
  • the device 300 includes:
  • the processing unit 310 is configured to determine a first time-frequency resource for transmitting the first data, where the first time-frequency resource occupies resources in the at least two sub-bands in the frequency domain, where the at least two sub-bands include the first sub-band and a second sub-band, the first data is data obtained by encoding the original information block, the original information block is a transport block carried by a physical channel, and the first data includes a first sub-data and a second sub-data, the first The resource occupied by the time-frequency resource on the first sub-band is used to transmit the first sub-data, and the resource occupied by the first time-frequency resource on the second sub-band is used to transmit the second sub-data;
  • the processing unit 310 is further configured to perform channel detection on the at least two sub-bands to determine a sub-band that is usable by the first device in the at least two sub-bands;
  • the communication unit 320 is configured to send the first data to the second device by using the resource occupied by the first time-frequency resource on the available sub-band.
  • the original information block includes a first transport block and a second transport block, where the first sub-data includes the first transport block encoded data, and the second sub-data includes the The second transport block encoded data.
  • the original information block includes a first CBG and a second CBG, where the first sub-data includes the first CBG encoded data, and the second sub-data includes the second CBG
  • the encoded data, the first CBG includes an integer number of CBGs, and the second CBG includes an integer number of CBGs.
  • the first sub-data corresponds to a first modulation and coding scheme
  • the second sub-data corresponds to a second modulation and coding scheme
  • the communication unit 320 is specifically configured to:
  • the first sub-data is sent to the second device by using the resource occupied by the first time-frequency resource on the first sub-band, and the first time is passed.
  • the resource occupied by the frequency resource on the second sub-band sends the second sub-data to the second device;
  • the first sub-data is sent to the second device by using the resource occupied by the first time-frequency resource on the first sub-band, and the The first time-frequency resource sends the second sub-data on the resource occupied by the second sub-band;
  • the first time-frequency resource is discarded, and the first time-frequency resource is sent on the resource occupied by the first sub-band, and the first time-frequency resource is used.
  • the resource occupied on the second sub-band sends the second sub-data to the second device; or
  • the first time-frequency resource is discarded, the first sub-data is sent on the resource occupied by the first sub-band, and the first time-frequency resource is discarded.
  • the second sub-data is sent on the resource occupied by the second sub-band.
  • the first sub-band corresponds to the first feedback information
  • the second sub-band corresponds to the second feedback information
  • the first feedback information and/or the second feedback information is HARQ feedback At least one of information and measurement information.
  • the first feedback information is HARQ feedback information, and if the first subband is unavailable, the state of the first feedback information is NACK or DTX; and/or,
  • the second feedback information is HARQ feedback information. If the second sub-band is unavailable, the status of the second feedback information is NACK or DTX.
  • the communication unit 320 is further configured to receive the first feedback information sent by the second device, where the first feedback information is used to determine data transmission on the second time-frequency resource, where The second time-frequency resource is later than the first time-frequency resource.
  • the first feedback information is used to determine data transmission on the second time-frequency resource, including at least one of the following:
  • the first feedback information is an ACK, and determining to send new transmission data on the second time-frequency resource
  • the first feedback information is a NACK and/or a DTX, and the retransmission data corresponding to the first sub-data is sent on the second time-frequency resource;
  • the first feedback information is the first measurement information, and the data is sent according to the resource occupied by the second time-frequency resource in the first sub-band according to the first measurement information, where the first measurement information includes the first sub- At least one of a CSI on the band, a CSI-RS resource identifier on the first subband, and a signal strongest layer information on the first subband.
  • the communication unit 320 is also used to
  • the second feedback information is used to determine data transmission on the third time-frequency resource, including at least one of the following:
  • the second feedback information is an ACK, and determining to send new transmission data on the third time-frequency resource
  • the second feedback information is a NACK and/or a DTX, and the retransmission data corresponding to the second sub-data is sent on the third time-frequency resource.
  • the second feedback information is the second measurement information, and is determined to send data according to the resource occupied by the third time-frequency resource in the second sub-band according to the second measurement information, where the second measurement information includes the second sub- At least one of a CSI on the band, a CSI-RS resource identifier on the second subband, and a signal strongest layer information on the second subband.
  • the processing unit 310 is specifically configured to:
  • the first time-frequency resource is determined according to the scheduling information.
  • the scheduling information is one of DCI, RRC signaling, and MAC CE signaling.
  • the device 300 is a network device.
  • the device 300 is a terminal device.
  • the device 300 for data transmission may correspond to the first device in the method embodiment of the present application, and the foregoing and other operations and/or functions of the respective units in the device 300 are respectively implemented in FIG.
  • the corresponding flow of the first device in the method 100 is omitted for brevity.
  • FIG. 5 is a schematic block diagram of an apparatus for data transmission according to an embodiment of the present application.
  • the device 400 of Figure 5 includes:
  • the communication unit 410 is configured to receive, by using the first time-frequency resource, the first data that is sent by the first device, where the first time-frequency resource occupies resources in the at least two sub-bands in the frequency domain, where the at least two sub-bands include the first a sub-band and a second sub-band, the first data is data obtained by encoding the original information block, the original information block is a transport block carried by a physical channel, and the first data includes a first sub-data and a second sub-data, The resource occupied by the first time-frequency resource on the first sub-band is used to receive the first sub-data, and the resource occupied by the first time-frequency resource on the second sub-band is used to receive the second sub-data;
  • the processing unit 420 is configured to separately demodulate the at least two sub-bands, and control the communication unit 410 to send feedback information to the first device according to the demodulation result, where the feedback information indicates that the first time-frequency resource is occupied. Whether the data transmitted on each subband is successfully received.
  • the original information block includes a first transport block and a second transport block, where the first sub-data includes the first transport block encoded data, and the second sub-data includes the The second transport block encoded data.
  • the original information block includes a first CBG and a second CBG, where the first sub-data includes the first CBG encoded data, and the second sub-data includes the second CBG
  • the encoded data, the first CBG includes an integer number of CBGs, and the second CBG includes an integer number of CBGs.
  • the first sub-data corresponds to a first modulation and coding scheme
  • the second sub-data corresponds to a second modulation and coding scheme
  • the feedback information includes first feedback information and second feedback information, where the first sub-band corresponds to the first feedback information, and the second sub-band corresponds to the second feedback information,
  • the first feedback information and/or the second feedback information is at least one of HARQ feedback information and measurement information.
  • the communication unit 410 is specifically configured to:
  • the first feedback information is at least one of ACK, NACK, DTX, and first measurement information
  • the first A measurement information includes at least one of a CSI on the first subband, a CSI-RS resource identifier on the first subband, and a signal strongest layer information on the first subband.
  • the communication unit 410 is specifically configured to:
  • the second device detects the demodulation reference signal on the first subband, and the first subdata transmitted on the first subband is decoded correctly, feeding back the ACK and/or the first device to the first device a measurement information;
  • the second device detects the demodulation reference signal on the first subband, and the first subdata transmitted on the first subband is decoded incorrectly, feeding back the NACK and/or the first device a measurement information;
  • the DTX is fed back to the first device.
  • the first feedback information is an ACK
  • the first feedback information is used to indicate that the first device sends the newly transmitted data on the second time-frequency resource
  • the first feedback information is a NACK and/or a DTX
  • the first feedback information is used to indicate that the first device sends the retransmission data corresponding to the first sub-data on the second time-frequency resource
  • the first feedback information is used to indicate that the first device sends data according to the first measurement information by using resources occupied by the second time-frequency resource on the first sub-band;
  • the second time-frequency resource is later than the first time-frequency resource.
  • the communication unit 410 is specifically configured to:
  • the second feedback information is at least one of ACK, NACK, DTX, and second measurement information
  • the second measurement information includes at least one of a CSI on the second subband, a CSI-RS resource identifier on the second subband, and a signal strongest layer information on the second subband.
  • the communication unit 410 is specifically configured to:
  • the second device detects the demodulation reference signal on the second subband, and the second subdata transmitted on the second subband is decoded correctly, feeding back the ACK and/or the first device to the first device Second measurement information; or
  • the second device detects the demodulation reference signal on the second subband, and the second subdata transmitted on the second subband is decoded incorrectly, feeding back the NACK and/or the first device Second measurement information; or
  • the DTX is fed back to the first device.
  • the second feedback information is an ACK
  • the second feedback information is used to indicate that the first device sends the newly transmitted data on the third time-frequency resource
  • the second feedback information is NACK and/or DTX
  • the second feedback information is used to indicate that the first device sends the retransmission data corresponding to the second sub-data on the third time-frequency resource
  • the second feedback information is used to indicate that the first device sends data according to the resource occupied by the third time-frequency resource on the second sub-band according to the second measurement information;
  • the third time-frequency resource is later than the first time-frequency resource.
  • the communication unit 410 before the communication unit 410 receives the first data sent by the first device on the first time-frequency resource, the communication unit 410 is further configured to send a schedule to the first device. Information, the scheduling information is used to determine the first time-frequency resource used to transmit the first data.
  • the scheduling information is one of DCI, RRC signaling, and MAC CE signaling.
  • the device 400 is a network device.
  • the device 400 is a terminal device.
  • the device 400 may correspond to (for example, may be configured or be itself) the second device described in the foregoing method 200, and each module or unit in the device 400 is used to perform the second method in the foregoing method 200, respectively.
  • Detailed descriptions of the operations and processes performed by the device are omitted here to avoid redundancy.
  • the embodiment of the present application further provides a device 500 for data transmission, which may be the device 300 in FIG. 4, which can be used to execute a first device corresponding to the method 100 in FIG. Content.
  • the device 500 includes an input interface 510, an output interface 520, a processor 530, and a memory 540.
  • the input interface 510, the output interface 520, the processor 530, and the memory 540 can be connected by a bus system.
  • the memory 540 is configured to store programs, instructions or code.
  • the processor 530 is configured to execute a program, an instruction or a code in the memory 540 to control the input interface 510 to receive a signal, control the output interface 520 to send a signal, and complete the operations in the foregoing method embodiments.
  • the processor 530 may be a central processing unit (CPU), and the processor 530 may also be other general purpose processors, digital signal processors (DSPs), dedicated Integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 540 can include read only memory and random access memory and provides instructions and data to the processor 530. A portion of the memory 540 may also include a non-volatile random access memory. For example, the memory 540 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 530 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 540, and the processor 530 reads the information in the memory 540 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processing unit 310 included in the device 300 of FIG. 4 can be implemented by the processor 530 of FIG. 6.
  • the communication unit 320 included in the device 300 of FIG. 4 can use the input interface 510 of FIG.
  • the output interface 520 is implemented.
  • the embodiment of the present application further provides a device 600 for data transmission, which may be the device 400 in FIG. 5, which can be used to execute a second device corresponding to the method 200 in FIG. Content.
  • the device 600 includes an input interface 610, an output interface 620, a processor 630, and a memory 640.
  • the input interface 610, the output interface 620, the processor 630, and the memory 640 can be connected by a bus system.
  • the memory 640 is used to store programs, instructions or code.
  • the processor 630 is configured to execute a program, an instruction or a code in the memory 640 to control the input interface 610 to receive a signal, control the output interface 620 to send a signal, and complete the operations in the foregoing method embodiments.
  • the processor 630 may be a central processing unit (CPU), and the processor 630 may also be other general-purpose processors, digital signal processors (DSPs), dedicated Integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 640 can include read only memory and random access memory and provides instructions and data to the processor 630. A portion of the memory 640 can also include a non-volatile random access memory. For example, the memory 640 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 630 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processing unit 420 included in the device 400 of FIG. 5 can be implemented by the processor 630 of FIG. 7, and the communication unit 410 included in the device 400 of FIG. 5 can use the input interface 610 of FIG.
  • the output interface 620 is implemented.
  • the embodiment of the present application further provides a computer readable storage medium storing one or more programs, the one or more programs including instructions, when the portable electronic device is included in a plurality of applications When executed, the portable electronic device can be caused to perform the method of the embodiment shown in Figures 1-3.
  • the embodiment of the present application also proposes a computer program comprising instructions which, when executed by a computer, cause the computer to perform the corresponding flow of the method of the embodiment shown in Figures 1 to 3.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

La présente invention concerne, selon des modes de réalisation, un procédé et un dispositif de transmission de données qui peuvent mapper des données qui peuvent être décodées de manière indépendante et renvoyées sur au moins deux sous-bandes dans le cas où une largeur de bande de détection de canal est incompatible avec une largeur de bande de porteuse ou avec une largeur de bande de transmission de données d'un système, ce qui permet d'augmenter une probabilité d'accès à un canal et de réduire un retard de transmission de données sur un spectre sans licence. Le procédé comprend les étapes suivantes : un premier dispositif détermine une première ressource temps-fréquence pour transmettre des premières données, la première ressource temps-fréquence occupant des ressources d'au moins deux sous-bandes dans un domaine fréquentiel, lesdites au moins deux sous-bandes comprenant une première sous-bande et une seconde sous-bande, les premières données étant des données obtenues par codage d'un bloc d'informations d'origine, le bloc d'informations d'origine étant un bloc de transport transporté par un canal physique, les premières données comprenant des premières sous-données et des secondes sous-données, les ressources occupées par la première ressource temps-fréquence sur la première sous-bande étant utilisées pour transmettre les premières sous-données et les ressources occupées par la première ressource temps-fréquence sur la seconde sous-bande étant utilisées pour transmettre les secondes sous-données ; le premier dispositif effectue une détection de canal sur les au moins deux sous-bandes pour déterminer une sous-bande disponible pour le premier dispositif parmi les au moins deux sous-bandes ; le premier dispositif envoie les premières données au second dispositif au moyen des ressources occupées par la première ressource temps-fréquence sur la sous-bande disponible.
PCT/CN2018/081777 2018-04-03 2018-04-03 Procédé et dispositif de transmission de données WO2019191911A1 (fr)

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CN201880084841.1A CN111543113B (zh) 2018-04-03 2018-04-03 数据传输的方法和设备

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CN107636997A (zh) * 2015-04-08 2018-01-26 交互数字专利控股公司 用于具有简化能力和覆盖增强的无线发射/接收单元的基于多子带传输的方法和设备
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