WO2018040012A1 - 一种非授权频谱下ack/nack反馈方法及相关设备 - Google Patents

一种非授权频谱下ack/nack反馈方法及相关设备 Download PDF

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Publication number
WO2018040012A1
WO2018040012A1 PCT/CN2016/097650 CN2016097650W WO2018040012A1 WO 2018040012 A1 WO2018040012 A1 WO 2018040012A1 CN 2016097650 W CN2016097650 W CN 2016097650W WO 2018040012 A1 WO2018040012 A1 WO 2018040012A1
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WIPO (PCT)
Prior art keywords
terminal device
target data
network device
uplink channel
mapping relationship
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PCT/CN2016/097650
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English (en)
French (fr)
Inventor
于海凤
于峰
张涛
于光炜
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16914578.6A priority Critical patent/EP3496314B1/en
Priority to CN201680084030.2A priority patent/CN109075905B/zh
Priority to PCT/CN2016/097650 priority patent/WO2018040012A1/zh
Priority to JP2019531500A priority patent/JP6794547B2/ja
Publication of WO2018040012A1 publication Critical patent/WO2018040012A1/zh
Priority to US16/287,645 priority patent/US20190200238A1/en

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    • 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
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • H04L1/1607—Details of the supervisory signal
    • 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

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to an ACK/NACK feedback method and related device in an unlicensed spectrum.
  • Wireless communication is realized by using spectrum between communication devices.
  • the spectrum can be roughly divided into two categories, one of which is a licensed spectrum and the other is an unlicensed spectrum.
  • the private access technology represented by SigFox and LoRA appears in the unlicensed spectrum below 1 GHz, and has gradually evolved into a hot spot in the industry. In the future, there will be a large number of terminals working on the unlicensed spectrum.
  • the terminal device accesses the network device in a contention-based manner.
  • the network device After receiving the target data packet sent by the terminal device, the network device replies with an ACK/NACK for the terminal device, considering that the downlink channel resource is limited, and sometimes the network device receives the packet successfully. , also can not reply ACK / NACK in time, causing network device cache accumulation.
  • the number of Internet of Things (IOT) terminals is huge in the future, and the ACK/NACK reply is expensive.
  • the embodiment of the invention provides an ACK/NACK feedback method and related device under the unlicensed spectrum, which aims to solve the problem that the network device fails to reply ACK/NACK in time, causes the network device to accumulate buffer, and the network device replies with ACK/NACK overhead. .
  • a first aspect of the embodiments of the present invention provides an ACK/NACK feedback method in an unlicensed spectrum, where the network device displays or implicitly notifies a terminal device of a mapping relationship, and the network device receives target data sent by the terminal device; the network device according to the target The information and the mapping relationship of the data determine the corresponding indication information; the network device feeds back the ACK/NACK to the terminal device according to the indication information that determines the feedback ACK/NACK.
  • the mapping relationship includes: mapping relationship between the information of the target data sent by the terminal device and the indication information of the network device feedback correct response message ACK/error response message NACK.
  • the terminal device may send, according to the mapping relationship between the uplink channel type of the transmission target data and the indication information of the network device feedback ACK/NACK, to the network device.
  • the target data the network device may determine the corresponding indication information according to the uplink channel type and the mapping relationship of the transmission target data, and determine, according to the indication information, whether the ACK/NACK needs to be fed back to the terminal device.
  • the terminal device may send the target data to the network device according to whether the target data carries a mapping relationship between the indication identifier and the indication information of the network device for feeding back the ACK/NACK, and the network device may be in the target data. And carrying the indication identifier and the mapping relationship to determine corresponding indication information, and determining, according to the indication information, whether the ACK/NACK needs to be fed back to the terminal device.
  • the network device can selectively feed back the ACK/NACK to the terminal device by using the foregoing method, thereby solving the problem that the network device fails to reply to the ACK/NACK, causing the network device to buffer accumulation, and the network device replying to the ACK/ The problem of large NACK overhead.
  • determining, by the network device, the corresponding indication information according to the information and the mapping relationship of the target data the network device determining an uplink channel type of the transmission target data, and determining, by the network device, the corresponding indication according to the uplink channel type and the mapping relationship of the transmission target data. information.
  • the uplink channel type includes: a feedback uplink channel and a non-feedback uplink channel.
  • the network device may receive the target data sent by the terminal device, Corresponding indication information is determined according to an uplink channel type and a mapping relationship of the transmission target data.
  • the network device determines, according to the mapping relationship, the indication information is feedback to the terminal device.
  • ACK/NACK acknowledgment/NACK
  • the network device determines, according to the mapping relationship, the indication information that the ACK/NACK is not fed back to the terminal device.
  • the terminal device if the terminal device sends the target data through the confirmed uplink channel, it indicates that the network device needs to feed back the ACK/NACK to the terminal device corresponding to the target data after receiving the target data; if the terminal device sends the unconfirmed uplink channel
  • the target data indicates that the network device does not need to feed back ACK/NACK to the terminal device corresponding to the target data after receiving the target data.
  • the displaying, by the network device, the mapping relationship to the terminal device comprises: the network device sending the broadcast message to the terminal device.
  • the broadcast message includes: an uplink channel type and a physical downlink control channel PDCCH location corresponding to the feedback uplink channel, where the broadcast message carries a mapping relationship between the uplink channel type of the transmission target data and the indication information of the network device feedback ACK/NACK.
  • the mapping relationship between the uplink channel type of the transmission target data and the indication information of the network device feedback ACK/NACK is a display mapping relationship. That is, the network device has specified to the terminal device which target data transmitted on the uplink channel (eg, the confirmed uplink channel) will feed back ACK/NACK, and the target data transmitted on the uplink channel (unconfirmed uplink channel) will not feed back ACK/ NACK.
  • the network device divides the uplink channel into a confirmed uplink channel and an unconfirmed uplink channel, and carries the division and usage of the two channels in the broadcast message, which facilitates selection of uplink channel resources and control of the access terminal device, and ensures the network.
  • the equipment works steadily.
  • the broadcast message further includes: a selection condition for feeding back the uplink channel, where the selection condition includes: selecting a probability p for feeding back the uplink channel or selecting a terminal device reference attribute of the feedback uplink channel.
  • the network device may formulate corresponding rules for the selection of the confirmed uplink channel and the unconfirmed uplink channel, for example, the probability that the terminal device selects the confirmed uplink channel or the terminal device attribute that needs to be confirmed for the confirmed uplink channel. (eg: quality of service level indication QCI, modulation and coding strategy MCS).
  • the terminal device can also determine the uplink channel by itself. For example, the terminal device determines whether ACK/NACK feedback is required according to its own attributes, which is not limited herein.
  • the broadcast message may not include the selection condition of the feedback uplink channel.
  • determining, by the network device, the corresponding indication information according to the information and the mapping relationship of the target data the network device determining whether the indication data is carried in the target data, and determining, by the network device, whether the indication information and the mapping relationship are carried in the target data, and determining the corresponding indication. information.
  • the network device may determine the corresponding indication information according to whether the target data carries the indication identifier and the mapping relationship after receiving the target data sent by the terminal device.
  • the network device determines, according to whether the indication data and the mapping relationship are carried in the target data, the corresponding indication information, if the target data carries the indication identifier, the network device determines the indication information according to the mapping relationship to feed back the ACK/NACK to the terminal device. ;
  • the network device determines, according to the mapping relationship, the indication information that the ACK/NACK is not fed back to the terminal device.
  • the terminal device if the terminal device carries the indication flag of the 1 bit flag in the target data packet header, it indicates that the network device needs to feed back the ACK/NACK to the terminal device after receiving the target data; if the terminal device is not in the target data packet header Carrying a 1-bit flag indicates that the network device does not need to feed back ACK/NACK to the terminal device after receiving the target data.
  • the network device determines whether the network device carries the indication identifier in the target data sent by the terminal device, whether the ACK feedback is needed, is convenient for the network device to process, and the PDCCH overhead is saved.
  • the indication identifier is a bit bit flag located in a packet header of the target data, such as: 1 bit, 2 bit, etc., which are not limited herein.
  • the network device implicitly notifying the terminal device of the mapping relationship includes: the network device sending the broadcast message to the terminal device.
  • the broadcast message includes: a PDCCH location corresponding to the ACK/NACK, and the broadcast message carries a mapping relationship between the indication information and the indication information of the ACK/NACK of the network device.
  • the mapping relationship between the indication information and the indication information of the ACK/NACK feedback by the network device in the target data is an implicit mapping relationship, that is, the network device is The terminal device is not clarified which target data can feed back the ACK/NACK, but the terminal device carries the indication identifier in the target data, thereby indicating that the network device feeds back the ACK/NACK.
  • the broadcast message may further include: a reference condition that supports ACK/NACK feedback, and the reference condition includes: a terminal device reference attribute that supports ACK/NACK feedback.
  • the broadcast message when the network device does not divide the uplink channel, may include: a PDCCH location corresponding to the feedback ACK/NACK and a reference condition for supporting ACK/NACK feedback, where the reference condition includes: supporting the ACK End device reference attribute for /NACK feedback.
  • the terminal device can decide how to select the uplink channel, the reference condition for supporting ACK/NACK feedback may not be included in the broadcast message.
  • a second aspect of the embodiments of the present invention provides an ACK/NACK feedback method in an unlicensed spectrum, where the terminal device receives a mapping relationship between a network device display or an implicit notification; the terminal device sends the target data to the network device according to the mapping relationship; The device determines the corresponding indication information according to the information and the mapping relationship of the target data; the terminal device monitors the network device to feed back the ACK/NACK according to the indication information that determines the feedback ACK/NACK.
  • the mapping relationship includes: mapping relationship between the information of the target data sent by the terminal device and the indication information of the ACK/NACK fed back by the network device.
  • the terminal device may select a condition according to the network device or Determining, so as to determine the uplink channel type of the transmission target data, and transmitting the target data to the network device through the determined uplink channel, the network device may determine the corresponding indication information according to the uplink channel type and the mapping relationship of the transmission target data, and according to the indication information Determining whether it is necessary to feed back the ACK/NACK to the terminal device; if the network device does not divide the uplink channel, the terminal device may determine whether the target data is carried according to the reference condition of the network device that supports the ACK/NACK feedback or the self-determination. And indicating the identifier, and sending the target data to the network device, the network device may determine whether the indication information and the mapping relationship are in the target data, and determine whether the ACK/NACK needs to be fed back to the terminal device according to the indication information.
  • the receiving, by the terminal device, the mapping relationship that the network device displays the notification includes: the terminal device receives the broadcast message sent by the network device, where the broadcast message includes: an uplink channel type and a PDCCH location corresponding to the feedback uplink channel, where the uplink channel type includes: And the non-feedback uplink channel, the broadcast message carries a mapping relationship between the uplink channel type of the transmission target data and the indication information of the ACK/NACK fed back by the network device.
  • the terminal device sends the target data to the network device according to the mapping relationship, where the terminal device determines whether ACK/NACK feedback is required according to the attribute of the terminal, and if the terminal device needs ACK/NACK feedback, the terminal device determines the transmission target data according to the mapping relationship.
  • the uplink channel is a feedback uplink channel; the terminal device transmits the target data to the network device by feeding back the uplink channel;
  • the terminal device determines that the uplink channel of the transmission target data is a non-feedback uplink channel according to the mapping relationship; and the terminal device transmits the target data to the network device by using the non-feedback uplink channel.
  • the broadcast message may further include: a selection condition for feeding back an uplink channel, where the selection condition includes: selecting a probability p of feeding back the uplink channel or selecting a terminal device reference attribute of the feedback uplink channel.
  • the sending, by the terminal device, the target data to the network device according to the mapping relationship includes:
  • the terminal device randomly selects the value x in [0, 1]; the terminal device compares x with p; if x ⁇ p, the terminal device determines the transmission target data according to the mapping relationship
  • the uplink channel is a feedback uplink channel; the terminal device transmits the target data to the network device by feeding back the uplink channel;
  • the terminal device determines, according to the mapping relationship, that the uplink channel of the transmission target data is a non-feedback uplink channel; and the terminal device transmits the target data to the network device by using the non-feedback uplink channel.
  • the sending, by the terminal device, the target data to the network device according to the mapping relationship includes: if the selection condition is a terminal device reference attribute that selects the feedback uplink channel, the terminal device compares the self attribute with the reference attribute; if the terminal device's own attribute reaches the reference Attribute, the terminal device determines, according to the mapping relationship, that the uplink channel of the transmission target data is a feedback uplink channel; the terminal device transmits the target data to the network device by feeding back the uplink channel;
  • the terminal device determines, according to the mapping relationship, that the uplink channel of the transmission target data is a non-feedback uplink channel; and the terminal device transmits the target data to the network device by using the non-feedback uplink channel.
  • the receiving, by the terminal device, the mapping relationship of the network device implicit notification includes: receiving, by the terminal device, the broadcast message sent by the network device, where the broadcast message includes: feeding back a PDCCH location corresponding to the ACK/NACK, and the broadcast message carries whether the target data carries And indicating a mapping relationship between the identifier and the indication information that the network device feeds back the ACK/NACK.
  • the terminal device sends the target data to the network device according to the mapping relationship, where the terminal device determines whether ACK/NACK feedback is required according to the attribute of the terminal, and if the terminal device needs ACK/NACK feedback, the terminal device carries the target data according to the mapping relationship. Instructing the identifier; the terminal device sends the target data carrying the indication identifier to the network device;
  • the terminal device does not need the ACK/NACK feedback, the terminal device does not carry the indication identifier in the target data according to the mapping relationship; the terminal device sends the target data that does not carry the indication identifier to the network device.
  • the broadcast message may further include: a reference condition that supports ACK/NACK feedback, and the reference condition includes: a terminal device reference attribute that supports ACK/NACK feedback.
  • the terminal device sends the target data to the network device according to the mapping relationship, the terminal device compares the self-attribute with the reference attribute, and if the terminal device's own attribute reaches the reference attribute, the terminal device carries the indication identifier in the target data according to the mapping relationship.
  • the terminal device sends and carries to the network device Indicates the target data of the identification;
  • the terminal device If the terminal device's own attribute does not reach the reference attribute, the terminal device does not carry the indication identifier in the target data according to the mapping relationship; the terminal device sends the target data that does not carry the indication identifier to the network device.
  • a third aspect of the embodiments of the present invention provides a network device, including:
  • mapping relationship includes: mapping relationship between the information of the target data sent by the terminal device and the indication information of the ACK/NACK fed back by the network device;
  • a receiving module configured to receive target data sent by the terminal device
  • a processing module configured to determine corresponding indication information according to information and a mapping relationship of the target data received by the receiving module
  • the sending module is further configured to feed back the ACK/NACK to the terminal device according to the indication information of the determined feedback ACK/NACK obtained by the processing module.
  • the determining, by the processing module, the corresponding indication information, according to the information and the mapping relationship of the target data received by the receiving module includes:
  • the uplink channel type includes: a feedback uplink channel and a non-feedback uplink channel
  • Corresponding indication information is determined according to an uplink channel type and a mapping relationship of the target data received by the transmission receiving module.
  • the processing module is configured to determine, according to an uplink channel type and a mapping relationship of the target data received by the transmission receiving module, the corresponding indication information, including:
  • determining the indication information according to the mapping relationship is to feed back ACK/NACK to the terminal device;
  • the indication information is determined according to the mapping relationship so as not to feed back the ACK/NACK to the terminal device.
  • the sending module is configured to display the notification of the mapping relationship to the terminal device, including:
  • the broadcast message includes: an uplink channel type and feedback
  • the physical downlink control channel PDCCH location corresponding to the row channel, and the broadcast message carries the mapping relationship between the uplink channel type of the transmission target data and the indication information of the ACK/NACK fed back by the network device.
  • the broadcast message further includes: a selection condition for feeding back the uplink channel, where the selection condition includes: selecting a probability p for feeding back the uplink channel or selecting a terminal device reference attribute of the feedback uplink channel.
  • the determining, by the processing module, the corresponding indication information, according to the information and the mapping relationship of the target data received by the receiving module includes:
  • Corresponding indication information is determined according to whether the indication data and the mapping relationship are carried in the target data.
  • the processing module is configured to determine, according to whether the indication data and the mapping relationship are carried in the target data, the corresponding indication information includes:
  • the target data carries the indication identifier, determining the indication information according to the mapping relationship to feed back the ACK/NACK to the terminal device;
  • the indication information is determined according to the mapping relationship so as not to feed back the ACK/NACK to the terminal device.
  • the indication is identified as a bit bit flag located in a header of the target data.
  • the sending module is configured to implicitly notify the terminal device of the mapping relationship, including:
  • the broadcast message includes: a PDCCH location corresponding to the ACK/NACK, and the broadcast message carries a mapping relationship between the indication data and the indication information of the network device to feed back the ACK/NACK.
  • the broadcast message further includes: a reference condition that supports ACK/NACK feedback
  • the reference condition includes: a terminal device reference attribute that supports ACK/NACK feedback.
  • a fourth aspect of the embodiments of the present invention provides a terminal device, including:
  • a receiving module configured to receive a mapping relationship between the display or the implicit notification of the network device, where the mapping relationship includes: mapping relationship between the information of the target data sent by the terminal device and the indication information of the ACK/NACK fed back by the network device;
  • a sending module configured to send target data to the network device according to the mapping relationship received by the receiving module
  • the processing module is configured to determine corresponding indication information according to the information about the target data sent by the sending module and the mapping relationship received by the receiving module, and is further configured to listen to the network device to feed back the ACK/NACK according to the indication information that determines the feedback ACK/NACK.
  • mapping relationship used by the receiving module to receive the notification displayed by the network device includes:
  • the broadcast message includes: an uplink channel type and a PDCCH location corresponding to the feedback uplink channel, where the uplink channel type includes: a feedback uplink channel and a non-feedback uplink channel, where the broadcast message carries the uplink of the transmission target data.
  • the sending, by the sending module, sending the target data to the network device according to the mapping relationship received by the receiving module includes:
  • Whether the ACK/NACK feedback is needed is determined by the processing module according to its own attribute
  • the processing module determines, according to the mapping relationship received by the receiving module, that the uplink channel of the transmission target data is a feedback uplink channel;
  • the processing module determines, according to the mapping relationship received by the receiving module, that the uplink channel of the transmission target data is a non-feedback uplink channel;
  • the target data is transmitted to the network device through the non-feedback uplink channel determined by the processing module.
  • the broadcast message further includes: a selection condition for feeding back the uplink channel, where the selection condition includes: selecting a probability p for feeding back the uplink channel or selecting a terminal device reference attribute of the feedback uplink channel.
  • the sending, by the sending module, sending the target data to the network device according to the mapping relationship received by the receiving module includes:
  • the selection condition is to select p of the feedback uplink channel
  • the value x is randomly selected by the processing module in [0, 1];
  • the processing module determines, according to the mapping relationship received by the receiving module, that the uplink channel of the transmission target data is a feedback uplink channel;
  • the processing module determines, according to the mapping relationship, that the uplink channel of the transmission target data is a non-feedback uplink channel
  • the target data is transmitted to the network device through the non-feedback uplink channel determined by the processing module.
  • the sending, by the sending module, sending the target data to the network device according to the mapping relationship received by the receiving module includes:
  • the processing module compares the self attribute with the reference attribute
  • the processing module determines, according to the mapping relationship received by the receiving module, that the uplink channel of the transmission target data is a feedback uplink channel;
  • the processing module determines, according to the mapping relationship, that the uplink channel of the transmission target data is a non-feedback uplink channel
  • the target data is transmitted to the network device through the non-feedback uplink channel determined by the processing module.
  • mapping relationship used by the receiving module to receive the implicit notification of the network device includes:
  • the broadcast message includes: a PDCCH location corresponding to the ACK/NACK, and the broadcast message carries a mapping relationship between the indication information and the indication information of the ACK/NACK of the network device.
  • the sending, by the sending module, sending the target data to the network device according to the mapping relationship received by the receiving module includes:
  • Whether the ACK/NACK feedback is needed is determined by the processing module according to its own attribute
  • the processing module carries the indication identifier in the target data according to the mapping relationship
  • the processing module does not carry the indication identifier in the target data according to the mapping relationship
  • the target data that does not carry the indication identifier is sent to the network device.
  • the broadcast message further includes: a reference condition that supports ACK/NACK feedback
  • the reference condition includes: a terminal device reference attribute that supports ACK/NACK feedback.
  • the sending, by the sending module, sending the target data to the network device according to the mapping relationship received by the receiving module includes:
  • the processing module carries the indication identifier in the target data according to the mapping relationship
  • the processing module does not carry the indication identifier in the target data according to the mapping relationship
  • the target data that does not carry the indication identifier is sent to the network device.
  • a fifth aspect of the embodiments of the present invention provides a network device, including: a processor, a memory, and a bus;
  • the processor and the memory are connected by a bus, the memory is used to store program code, and the processor is configured to invoke the program code to perform the method according to any one of the first aspects.
  • a sixth aspect of the embodiments of the present invention provides a terminal device, including: a processor, a memory, and a bus;
  • the processor and the memory are connected by a bus, the memory is used to store the program code, and the processor is configured to invoke the program code to perform the method according to any one of the second aspects.
  • the network device displays or implicitly notifies the terminal device of the mapping relationship between the information of the target data sent by the terminal device and the indication information of the ACK/NACK of the network device, and after the network device receives the target data, Corresponding indication information is determined according to the target data, and the ACK/NACK is fed back to the terminal device according to the indication information for determining the feedback ACK/NACK. Therefore, compared with the prior art, the embodiment of the present invention effectively avoids the buffer accumulation problem caused by the ACK/NACK reply not timely, and reduces the reply ACK/NACK overhead of the network device.
  • FIG. 1 is a system architecture diagram of an embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a cellular-based narrowband Internet of Things NB-cIoT based on scheduled transmission according to an embodiment of the present invention
  • FIG. 3 is a flowchart of an embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 9 is a block diagram of a module of an embodiment of a network device according to an embodiment of the present invention.
  • FIG. 10 is a block diagram of a block diagram of an embodiment of a terminal device according to an embodiment of the present invention.
  • FIG. 11 is a hardware block diagram of an embodiment of a network device according to an embodiment of the present invention.
  • FIG. 12 is a hardware block diagram of an embodiment of a terminal device according to an embodiment of the present invention.
  • GSM Global System for Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • LTE Long Term Evolution
  • the embodiments of the present invention are mainly applied to a communication system using an unlicensed spectrum, and the specific application fields may include: smart meter reading, target data collection in a factory, and smart office.
  • the communication system includes: a terminal device and a network device.
  • the terminal device may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network.
  • a wireless terminal may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, or an access point.
  • Remote Terminal Access Terminal, User End User Terminal, User Agent, User Device, or User Equipment.
  • the network device involved in the embodiments of the present invention may be a base station, or an access point, or may refer to a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. This application is not limited.
  • FIG. 1 is a system architecture diagram of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention.
  • the communication system includes: a terminal device 101 and a network device 102, where the network device 102 includes: a core The network controller 1021, the gateway 1022, the baseband processing unit 1023, the macro base station 1024, the micro base station 1025, the radio frequency unit 1026, and the like.
  • the terminal device 101 establishes a communication connection with the network device such as the macro base station 1024, the micro base station 1025, and the radio frequency unit 1026 through the wireless air interface resource, and the gateway 1022, the baseband processing unit 1023, and the macro base station 1024 are connected to the core network controller 1021.
  • the network device such as the macro base station 1024, the micro base station 1025, and the radio frequency unit 1026 through the wireless air interface resource, and the gateway 1022, the baseband processing unit 1023, and the macro base station 1024 are connected to the core network controller 1021.
  • the macro base station 1024, the micro base station 1025, and the radio frequency unit 1026 may exist at the same time, or one or more of them may be deployed separately, which is not limited herein.
  • FIG. 2 is a flowchart of a cellular-based narrowband Internet of Things NB-cIoT based on scheduled transmission according to an embodiment of the present invention, where the method includes:
  • the network device sends a broadcast message to the terminal device, where the terminal device receives the broadcast message sent by the network device.
  • the broadcast message includes: an available physical uplink shared channel PUSCH resource, a physical downlink control channel PDCCH location corresponding to different coverage level terminal devices, and the like, wherein the PUSCH is used to carry a buffer status report sent by the terminal device to the network device (Buffer Status Report) (BSR), the PDCCH is used to carry a correct response message ACK/error response message NACK that the network device feeds back to the terminal device.
  • BSR Buffer Status Report
  • the network device may notify the terminal device of the PUSCH resource, the PDCCH location corresponding to the different level terminal device, and the like by using the broadcast message, so that the terminal device may send the BSR to the network device on the available PUSCH, and may be in the corresponding PDCCH according to the terminal device level.
  • the ACK/NACK fed back by the network device is monitored.
  • the terminal device sends a buffer status report to the network device, and the network device receives the cache status report sent by the terminal device.
  • the terminal device may obtain information about available PUSCH resources, PDCCH locations corresponding to different coverage level terminal devices, and the like from the broadcast message.
  • the terminal device can send a BSR to the network device through the available PUSCH, and the terminal device can inform the network device of the data volume of the target data to be sent in the uplink buffer Buffer through the BSR.
  • the network device sends an uplink channel resource allocation message to the terminal device, where the terminal device receives the uplink channel resource allocation message sent by the network device.
  • the network device After receiving the BSR sent by the terminal device, the network device can learn the data volume of the target data to be sent in the uplink buffer from the BSR, and allocate the corresponding uplink channel resource to the terminal device according to the corresponding scheduling algorithm.
  • the terminal device sends target data to the network device, where the network device receives the target data sent by the terminal device.
  • the terminal device may learn the uplink channel resource allocated by the network device for the terminal device according to the uplink channel resource allocation message, and send the target data to the network device by using the uplink channel resource.
  • the network device feeds back an ACK/NACK to the terminal device, where the terminal device receives an ACK/NACK fed back by the network device.
  • the terminal device After the terminal device sends the target data to the network device, if the network device receives the target data sent by the terminal device, the network device feeds back the ACK/NACK to the terminal device.
  • the ACK/NACK cannot be replied to the terminal device in time, especially when the network device is heavily loaded. If the target data sent by each terminal device is replied, Not only the ACK/NACK reply overhead is large, but also the network device cache is accumulated, which causes the network device to work unstable.
  • an embodiment of the present invention provides an ACK/NACK feedback method under unlicensed spectrum, which aims to solve the problem that the network device fails to reply ACK/NACK in time, causes network device buffer accumulation, and the network device returns ACK/NACK overhead.
  • FIG. 3 is a flowchart of an embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention, where the method includes:
  • the network device sends a broadcast message to the terminal device, where the terminal device receives the broadcast message sent by the network device.
  • the network device may divide the uplink channel into two types: an acknowledged uplink channel (ie, a feedback uplink channel) and a non-acknowledged unconfirmed uplink channel (ie, a non-feedback uplink channel).
  • the confirmed uplink channel is an uplink channel that needs to provide ACK/NACK feedback to the network device.
  • the terminal device sends the target data to the network device through the confirmed uplink channel, and the network device needs to send the target data to the terminal device after receiving the target data on the confirmed uplink channel.
  • Feedback ACK/NACK The unconfirmed uplink channel is an uplink channel that does not require ACK/NACK feedback from the network device.
  • the terminal device sends the target data to the network device through the unconfirmed uplink channel. After the network device receives the target data on the unconfirmed uplink channel, the network device does not need to go to the terminal device. Feedback ACK/NACK.
  • the embodiment of the present invention may indicate whether the network device feeds back ACK/NACK by using the difference of the uplink channel of the target data transmission as the indication information. For the network device, it is judged whether the ACK/NACK needs to be fed back by the target data received from different uplink channels (confirmed uplink channel or unconfirmed uplink channel). In the case that the downlink channel resources are limited, the network device only feeds back some of the uplink channels (eg, the confirmed uplink channel), which saves the network device's response to ACK/NACK.
  • the network device can bind the mapping relationship between the confirmed uplink channel and the PDCCH.
  • the ACK/NACK can be monitored on the corresponding PDCCH. For example, if the network device receives the target data sent by the terminal device on the confirmed uplink channel, correspondingly, the network device feeds back to the terminal device on the PDCCH corresponding to the confirmed uplink channel. ACK/NACK, for this reason, after the terminal device sends the target data to the network device, the ACK/NACK can be monitored on the PDCCH corresponding to the confirmed uplink channel.
  • the network device may formulate corresponding rules, such as: a probability p of the terminal device selecting the confirmed uplink channel or a terminal device attribute required to select the confirmed uplink channel (eg, service)
  • the quality level indicates QCI, modulation and coding strategy (MCS), and the like.
  • MCS modulation and coding strategy
  • the terminal device can also determine the uplink channel by itself. For example, the terminal device determines whether ACK/NACK feedback is required according to its own attributes, which is not limited herein.
  • the network device may not divide the uplink channel, that is, the uplink channel does not have two types of confirmed upstream channel and unconfirmed uplink channel, and the network device may inform the terminal device to support the terminal device attribute of ACK/NACK feedback.
  • the terminal device can learn whether the network device can provide ACK/NACK feedback according to its own attributes, and use the indication identifier (for example, the flag bit carried in the data packet header of the target data (eg: 1bit, 2bit, etc., which is not limited here)) to inform the network device that the network device receives the indication identifier and knows the terminal device's demand for ACK/NACK feedback.
  • the indication identifier for example, the flag bit carried in the data packet header of the target data (eg: 1bit, 2bit, etc., which is not limited here)
  • the terminal device can also determine whether ACK/NACK feedback is needed according to its own attributes, and use the indication identifier to notify the network device. After receiving the indication identifier, the network device knows the terminal device's request for ACK/NACK feedback, specifically not here. Make a limit. That is, the embodiment of the present invention uses the indication information as the indication information when the terminal device sends the target data, thereby indicating whether the network device feeds back the ACK/NACK.
  • the broadcast message may include: an uplink channel type, a PDCCH location corresponding to the feedback uplink channel, and a selection condition of the feedback uplink channel, where the selection condition includes: Select the probability p of the feedback upstream channel or select the terminal device reference attribute of the feedback upstream channel.
  • the broadcast message may not include the selection condition of the feedback uplink channel.
  • the broadcast message may further carry a mapping relationship between the uplink channel type of the transmission target data and the indication information of the ACK/NACK fed back by the network device.
  • the terminal device selects the corresponding uplink channel according to whether ACK/NACK feedback is needed, and the network device according to different uplinks
  • the target data received on the channel obtains corresponding indication information, and determines, according to the indication information, whether an ACK/NACK needs to be fed back to the terminal device.
  • the mapping relationship between the uplink channel type of the transmission target data and the indication information of the network device feedback ACK/NACK is a display mapping. Relationship, that is, the network device has specified to the terminal device which target data transmitted on the uplink channel (eg, confirmed uplink channel) will feed back ACK/NACK, and the target data transmitted on the uplink channel (unconfirmed uplink channel) will not feed back ACK. /NACK.
  • the broadcast message may include: a PDCCH location corresponding to the feedback ACK/NACK and a reference condition supporting the ACK/NACK feedback, where the reference condition includes: the terminal device supporting the ACK/NACK feedback Reference attribute.
  • the terminal device can decide how to select the uplink channel, the reference condition for supporting ACK/NACK feedback may not be included in the broadcast message.
  • the broadcast message may further carry a mapping relationship between the indication data and the indication information indicating that the network device feeds back the ACK/NACK.
  • the terminal device When transmitting the target data, the terminal device carries the indication identifier in the target data according to whether the ACK/NACK feedback is needed. After receiving the target data, the network device determines whether the ACK/NACK needs to be fed back to the terminal device according to whether the target data carries the indication identifier. .
  • the mapping relationship between the indication information and the indication information of the ACK/NACK feedback by the network device in the target data is an implicit mapping relationship, that is, the network device.
  • the terminal device does not specify which target data can feed back the ACK/NACK, but the terminal device carries the indication identifier in the target data, thereby indicating that the network device feeds back the ACK/NACK.
  • the terminal device learns, according to the broadcast message, a mapping relationship between the information of the target data and the indication information.
  • the terminal device can learn the mapping relationship between the uplink channel type and the indication information of the transmission target data by using the broadcast message, and the uplink channel type of the transmission target data is the target. Information about the data.
  • the terminal device can also learn the uplink channel type and feedback uplink information through the broadcast message.
  • the broadcast message may not include the selection condition of the feedback uplink channel.
  • the terminal device can learn, by using the broadcast message, whether the target data carries the mapping relationship between the indication identifier and the indication information, and whether the target identifier carries the information indicating that the identifier is the target data.
  • the terminal device may also learn, by using a broadcast message, a PDCCH location corresponding to the feedback ACK/NACK and a reference condition that supports ACK/NACK feedback, where the reference condition includes: a terminal device reference attribute supporting ACK/NACK feedback.
  • the terminal device can decide how to select the uplink channel, the reference condition for supporting ACK/NACK feedback may not be included in the broadcast message.
  • the terminal device sends target data to the network device according to the mapping relationship, where the network device receives the target data sent by the terminal device.
  • the terminal device may determine the uplink channel type of the transmission target data according to the selection condition set by the network device or determine the uplink channel to the network through the determined uplink channel. The device sends the target data.
  • the terminal device may determine whether the target data carries the indication identifier according to the reference condition for supporting the ACK/NACK feedback set by the network device, and send the target data to the network device. .
  • the network device determines corresponding indication information according to information and mapping relationship of the target data.
  • the network device may determine the corresponding indication information according to the uplink channel type and mapping relationship of the transmission target data after receiving the target data sent by the terminal device.
  • the network device may determine the corresponding indication information according to whether the target data carries the indication identifier and the mapping relationship after receiving the target data sent by the terminal device.
  • the network device feeds back an ACK/NACK to the terminal device according to the indication information that determines the feedback ACK/NACK.
  • the network device may determine the indication information according to the uplink channel type and the mapping relationship of the transmission target data. In order to feed back the ACK/NACK to the terminal device, the network device feeds back the ACK/NACK to the terminal device according to the indication information that determines the feedback ACK/NACK.
  • the network device may determine, according to the indication identifier and the mapping relationship of the feedback ACK/NACK in the target data, the indication information is The ACK/NACK is fed back to the terminal device, and the network device feeds back the ACK/NACK to the terminal device according to the indication information that determines the feedback ACK/NACK.
  • the terminal device monitors the network device to feed back an ACK/NACK according to the indication information that determines the feedback ACK/NACK.
  • the indication information is that the network device needs to feed back the ACK/NACK to the terminal device
  • the ACK/NACK fed back by the network device may be monitored on the corresponding PDCCH.
  • step 306 and step 304 or step 305 are executed, there is no sequence requirement, and after the terminal device can send the target data to the network device, the ACK/NACK fed back by the network device can be monitored on the corresponding PDCCH. Then, the network device determines the corresponding indication information according to the information and the mapping relationship of the target data, and feeds back the ACK/NACK to the terminal device according to the indication information of the feedback ACK/NACK, which is not limited herein.
  • the terminal device may send, according to the mapping relationship between the uplink channel type of the transmission target data and the indication information of the network device feedback ACK/NACK, to the network device.
  • the target data the network device may determine the corresponding indication information according to the uplink channel type and the mapping relationship of the transmission target data, and determine, according to the indication information, whether the ACK/NACK needs to be fed back to the terminal device.
  • the terminal device may carry the finger according to the target data.
  • the mapping relationship between the identifier and the indication information of the ACK/NACK of the network device is sent to the network device, and the network device may determine whether the indication information and the mapping relationship are carried in the target data, and determine whether the terminal needs to be sent to the terminal according to the indication information.
  • the device feeds back ACK/NACK.
  • FIG. 4 it is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention, where the method includes:
  • the terminal device synchronizes with the network device, and listens to the broadcast message sent by the network device.
  • the network device divides the uplink channel into a confirmed uplink channel and an unconfirmed uplink channel, and when selecting the uplink channel, the terminal device selects the confirmed uplink channel and the unconfirmed uplink channel by using the probability p.
  • the terminal device can learn the division of the uplink channel through the broadcast message, confirm the PDCCH location corresponding to the channel, and select the probability p of the confirmed uplink channel.
  • the terminal device determines whether there is target data sent to the network device; if yes, step 403 is performed, and if no, step 407 is performed.
  • the terminal device randomly selects a number x from [0, 1], and determines whether x ⁇ p is established; if yes, step 404 is performed; if not, step 406 is performed.
  • the terminal device selects the confirmed uplink channel to transmit the target data; otherwise, the terminal device selects the unconfirmed uplink channel to transmit the target data.
  • the terminal device sends the target data by using a confirmed uplink channel.
  • the terminal device If the terminal device sends the target data through the confirmed uplink channel, it indicates that the network device needs to feed back the ACK/NACK to the terminal device corresponding to the target data after receiving the target data.
  • the terminal device monitors the ACK/NACK on the PDCCH corresponding to the confirmed uplink channel.
  • the terminal device monitors the ACK/NACK on the PDCCH corresponding to the confirmed uplink channel after transmitting the target data.
  • the terminal device sends the target data by using an unconfirmed uplink channel.
  • the terminal device If the terminal device sends the target data through the unconfirmed uplink channel, it indicates that the network device does not need to feed back the ACK/NACK to the terminal device corresponding to the target data after receiving the target data.
  • the terminal device if the terminal device selects the unconfirmed uplink channel to send the target data, the terminal device ends the current transmission process after transmitting the target data, and does not need to monitor the ACK/NACK on the PDCCH, thereby reducing the work of the terminal device. Consumption.
  • the terminal device selects the confirmed uplink channel and the unconfirmed uplink channel by using the probability p, and the network device may select the uplink channel type according to the transmission target data.
  • the mapping relationship determines the corresponding indication information, and determines, according to the indication information, whether the ACK/NACK needs to be fed back to the terminal device.
  • the terminal device selects the confirmed uplink channel and the unconfirmed uplink channel as the application scenario by using the probability p.
  • the following describes the uplink channel from the network device.
  • the terminal device selects the confirmed uplink channel and the unconfirmed uplink channel according to its own attributes to describe the application scenario.
  • FIG. 5 it is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention, where the method includes:
  • 501 to 502 similar to 401 to 402 in FIG. 4, as described above, and details are not described herein again.
  • the terminal device determines whether the attribute of the terminal meets the condition for selecting the confirmed uplink channel.
  • the network device divides the uplink channel into a confirmed uplink channel and an unconfirmed uplink channel, and the terminal device selects the uplink channel according to the terminal device's own attributes (eg, the quality of service level indicates the QCI, the modulation and coding policy MCS). ) to select the confirmed upstream channel and the unconfirmed upstream channel.
  • the terminal device's own attributes eg, the quality of service level indicates the QCI, the modulation and coding policy MCS.
  • the network device can inform the terminal device through the broadcast message of the attributes that the terminal device needs to have when selecting the confirmed uplink channel to send the target data.
  • the parameter parameters such as the QCI and the MCS of the terminal device need to reach the threshold specified by the network device.
  • 504 to 507 similar to 404 to 407 in FIG. 4, as described above, and details are not described herein again.
  • the terminal device when the network device divides the uplink channel into the confirmed uplink channel and the unconfirmed uplink channel, the terminal device may also select the confirmed uplink channel and the unconfirmed uplink channel according to the attribute of the network, and the network device may select the uplink channel type according to the transmission target data.
  • the mapping relationship determines the corresponding indication information, and determines, according to the indication information, whether the ACK/NACK needs to be fed back to the terminal device.
  • the terminal device selects the confirmed uplink channel and the unconfirmed uplink channel according to the terminal device's own attributes, and the following describes the application scenario from the network device.
  • the terminal device determines whether ACK/NACK feedback is needed to select the confirmed uplink channel and the unconfirmed uplink channel according to its own attributes to describe the application scenario.
  • FIG. 6 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention, the method includes:
  • 601 to 602 similar to 401 to 402 in FIG. 4, as described above, and details are not described herein again.
  • the terminal device determines whether the attribute of the terminal meets the condition for selecting the confirmed uplink channel.
  • the network device divides the uplink channel into a confirmed uplink channel and an unconfirmed uplink channel, and when the terminal device selects the uplink channel, the terminal device determines whether ACK/NACK feedback is needed to select the confirmed uplink channel according to its own attribute. And unconfirmed the upstream channel.
  • the terminal device can determine whether ACK/NACK feedback is needed according to its own attributes, and does not require the network device to formulate an uplink channel selection mode, thereby saving power consumption of the network device, and the broadcast message does not need to carry the information of the uplink channel selection mode. , saving broadcast messages.
  • 604-607 similar to 404-407 in FIG. 4, as described above, and details are not described herein again.
  • the terminal device when the network device divides the uplink channel into the confirmed uplink channel and the unconfirmed uplink channel, the terminal device may also select the confirmed uplink channel and the unconfirmed uplink channel according to its own attributes, without requiring the network device to formulate an uplink channel selection manner.
  • the power consumption of the network device is saved, and the broadcast message does not need to carry the information of the selection mode of the uplink channel, thereby saving broadcast messages.
  • the network device can be based on the uplink channel type and mapping of the transmission target data. The relationship determines the corresponding indication information, and determines whether it is necessary to feed back the ACK/NACK to the terminal device according to the indication information.
  • the terminal device determines whether the ACK/NACK feedback is required to select the confirmed uplink channel and the unconfirmed uplink channel according to its own attributes, and the following scenario is described.
  • the terminal device selects whether to carry the description of the application identifier in the target data according to its own attribute.
  • FIG. 7 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention, the method includes:
  • 701 to 702 similar to 401 to 402 in FIG. 4, as described above, and details are not described herein again.
  • the terminal device randomly selects a number x from [0, 1], and determines whether x ⁇ p' is established; if yes, step 704 is performed; if not, step 708 is performed again.
  • the network device does not divide the uplink channel, but the network device notifies the terminal device by using a broadcast message to select an available uplink channel resource, a corresponding access threshold p', and a PDCCH location and support corresponding to the available uplink channel resource.
  • Terminal device attributes for ACK feedback are not divided.
  • the network device may allow the terminal device to access; otherwise, the network device does not allow the terminal device to access.
  • the terminal device learns, according to the broadcast message, whether the network device can provide ACK/NACK feedback for the target data transmission; if yes, step 705 is performed, and if no, step 707 is performed.
  • the terminal device determines whether the indication data carries the indication identifier in the target data according to the attribute of the terminal and the terminal device attribute of the broadcast message in which the network device supports the ACK feedback.
  • the terminal device carries a 1 bit flag bit in the target packet header.
  • the terminal device If the terminal device carries the indication flag of the 1 bit flag in the target packet header, it indicates that the network device needs to feed back the ACK/NACK to the terminal device after receiving the target data.
  • the terminal device monitors an ACK/NACK on the PDCCH.
  • the terminal device monitors the ACK/NACK on the PDCCH corresponding to the uplink channel of the target data after transmitting the target data. And if the terminal device does not carry the 1bit flag in the target packet header, then After the target device sends the target data, it does not need to monitor the ACK/NACK on the PDCCH, which reduces the power consumption of the terminal device.
  • the terminal device does not carry a 1 bit flag bit in the target packet header.
  • the terminal device does not carry the 1 bit flag in the target packet header, it indicates that the network device does not need to feed back the ACK/NACK to the terminal device after receiving the target data.
  • the terminal device when the network device does not divide the uplink channel, the terminal device may select whether to carry the indication identifier in the target data according to the attribute of the network, and the network device may determine, according to whether the target data carries the indication identifier and the mapping relationship. Indicate information and determine whether it is necessary to feed back ACK/NACK to the terminal device according to the indication information.
  • the terminal device selects whether to carry the indication identifier in the target data as the application scenario according to its own attribute.
  • the terminal device determines whether ACK/NACK feedback is needed to select whether to carry the indication identifier in the target data as the application scenario for description.
  • FIG. 8 is a flowchart of another embodiment of an ACK/NACK feedback method in an unlicensed spectrum according to an embodiment of the present invention, where the method includes:
  • 801 to 803 similar to 701 to 703 in FIG. 7, as described above, and details are not described herein again.
  • the terminal device determines, according to its own attribute, whether ACK/NACK feedback is needed. If yes, step 805 is performed, and if no, step 807 is performed.
  • the network device does not divide the uplink channel, but the terminal device may decide whether ACK/NACK feedback is needed according to its own attributes, and the terminal device may decide whether ACK/NACK feedback is needed according to its own attributes, instead of
  • the network device is required to formulate an uplink channel selection mode, which saves power consumption of the network device, and the broadcast message does not need to carry information of the uplink channel selection mode, thereby saving broadcast messages.
  • 805-808 similar to 705-708 in FIG. 7, as described above, and details are not described herein again.
  • the terminal device may determine, according to its own attributes, whether ACK/NACK feedback is needed to select whether to carry in the target data.
  • the indication flag does not require the network device to formulate the selection mode of the uplink channel, which saves the power consumption of the network device, and the broadcast message does not need to carry the information of the selection mode of the uplink channel, thereby saving the broadcast message.
  • the network device may determine corresponding indication information according to whether the indication data and the mapping relationship are carried in the target data, and determine, according to the indication information, whether the ACK/NACK needs to be fed back to the terminal device.
  • the ACK/NACK feedback method in the unlicensed spectrum in the embodiment of the present invention is described above.
  • the network device in the embodiment of the present invention is described below.
  • the network device 900 includes:
  • the sending module 901 is configured to display or implicitly notify the terminal device of the mapping relationship, where the mapping relationship includes: a mapping relationship between the information of the target data sent by the terminal device and the indication information of the ACK/NACK fed back by the network device;
  • the receiving module 902 is configured to receive target data sent by the terminal device.
  • the processing module 903 is configured to determine corresponding indication information according to information and mapping relationship of the target data received by the receiving module 902;
  • the sending module 901 is further configured to feed back ACK/NACK to the terminal device according to the indication information of the determined feedback ACK/NACK processed by the processing module 903.
  • the physical device corresponding to the sending module 901 is a transmitter
  • the physical device corresponding to the receiving module 902 is a receiver
  • the physical device corresponding to the processing module 903 is a processor. The steps or functions corresponding to the network device in the method embodiment are not described herein.
  • the determining, by the processing module 903, the information about the target data received by the receiving module 902 and the mapping relationship may include:
  • the uplink channel type includes: a feedback uplink channel and a non-feedback uplink channel;
  • Corresponding indication information is determined according to the uplink channel type and mapping relationship of the target data received by the transmission receiving module 902.
  • the processing module 903 is configured to: according to the uplink channel type and the mapping relationship of the target data received by the transmission and receiving module 902, determining the corresponding indication information may include:
  • determining the indication information according to the mapping relationship is to feed back ACK/NACK to the terminal device;
  • the indication information is determined according to the mapping relationship so as not to feed back the ACK/NACK to the terminal device.
  • the sending by the sending module 901, the displaying the mapping relationship to the terminal device may include:
  • the broadcast message may include: an uplink channel type and a physical downlink control channel PDCCH location corresponding to the feedback uplink channel, where the broadcast message carries the uplink channel type of the transmission target data and the network device feeds back the ACK/NACK. Indicates the mapping relationship of information.
  • the broadcast message may further include: a selection condition for feeding back the uplink channel, where the selection condition includes: selecting a probability p for feeding back the uplink channel or selecting a terminal device reference attribute of the feedback uplink channel.
  • the determining, by the processing module 903, the information about the target data received by the receiving module 902 and the mapping relationship may include:
  • Corresponding indication information is determined according to whether the indication data and the mapping relationship are carried in the target data.
  • the processing module 903 is configured to determine, according to whether the indication information and the mapping relationship are carried in the target data, the corresponding indication information may include:
  • the target data carries the indication identifier, determining the indication information according to the mapping relationship to feed back the ACK/NACK to the terminal device;
  • the indication information is determined according to the mapping relationship so as not to feed back the ACK/NACK to the terminal device.
  • the indication is identified as a bit bit flag located in a header of the target data.
  • the sending, by the sending module 901, to notify the terminal device of the mapping relationship may include:
  • the broadcast message includes: a PDCCH location corresponding to the ACK/NACK, and the broadcast message carries a mapping relationship between the indication data and the indication information of the network device to feed back the ACK/NACK.
  • the broadcast message may further include: a reference condition that supports ACK/NACK feedback, and a reference.
  • Conditions include: Terminal device reference attributes that support ACK/NACK feedback.
  • the network device in the embodiment of the present invention has been described above.
  • the terminal device in the embodiment of the present invention is described below.
  • FIG. 10 is a block diagram of a block diagram of an embodiment of a terminal device according to an embodiment of the present invention.
  • the terminal device 1000 includes:
  • the receiving module 1001 is configured to receive a mapping relationship between the display or the implicit notification of the network device, where the mapping relationship includes: a mapping relationship between the information of the target data sent by the terminal device and the indication information of the ACK/NACK fed back by the network device;
  • the sending module 1002 is configured to send target data to the network device according to the mapping relationship received by the receiving module 1001.
  • the processing module 1003 is configured to determine corresponding indication information according to the information of the target data sent by the sending module 1002 and the mapping relationship received by the receiving module, and is further configured to monitor the network device to feed back the ACK/NACK according to the indication information that determines the feedback ACK/NACK.
  • the physical device corresponding to the receiving module 1001 is a receiver
  • the physical device corresponding to the sending module 1002 is a transmitter
  • the physical device corresponding to the processing module 1003 is a processor.
  • the specific functions of the module refer to FIG. 3 to FIG. 3 .
  • the steps or functions corresponding to the terminal device in the method embodiment shown in FIG. 8 are not described herein again.
  • mapping relationship that the receiving module 1001 is configured to receive, by the network device, the notification may include:
  • the broadcast message includes: an uplink channel type and a PDCCH location corresponding to the feedback uplink channel, where the uplink channel type includes: a feedback uplink channel and a non-feedback uplink channel, where the broadcast message carries the uplink of the transmission target data.
  • the sending, by the sending module 1002, the sending the target data to the network device according to the mapping relationship received by the receiving module 1001 may include:
  • Whether the ACK/NACK feedback is needed is determined by the processing module 1003 according to its own attribute;
  • the processing module 1003 determines, according to the mapping relationship received by the receiving module 1001, that the uplink channel of the transmission target data is a feedback uplink channel;
  • the processing module 1003 determines, according to the mapping relationship received by the receiving module 1001, that the uplink channel of the transmission target data is a non-feedback uplink channel;
  • the non-feedback upstream channel determined by the processing module 1003 transmits the target data to the network device.
  • the broadcast message may further include: a selection condition for feeding back the uplink channel, where the selection condition includes: selecting a probability p for feeding back the uplink channel or selecting a terminal device reference attribute of the feedback uplink channel.
  • the sending, by the sending module 1002, the sending the target data to the network device according to the mapping relationship received by the receiving module 1001 may include:
  • the processing module 1003 randomly selects the value x in [0, 1];
  • the processing module 1003 determines, according to the mapping relationship received by the receiving module 1001, that the uplink channel of the transmission target data is a feedback uplink channel;
  • the processing module 1003 determines, according to the mapping relationship, that the uplink channel of the transmission target data is a non-feedback uplink channel;
  • the non-feedback upstream channel determined by the processing module 1003 transmits the target data to the network device.
  • the sending, by the sending module 1002, the sending the target data to the network device according to the mapping relationship received by the receiving module 1001 may include:
  • the processing module compares the self attribute with the reference attribute
  • the processing module determines, according to the mapping relationship received by the receiving module, that the uplink channel of the transmission target data is a feedback uplink channel;
  • the processing module determines, according to the mapping relationship, that the uplink channel of the transmission target data is a non-feedback uplink channel
  • the target data is transmitted to the network device through the non-feedback uplink channel determined by the processing module.
  • mapping relationship that is used by the receiving module 1001 to receive the implicit notification of the network device may include:
  • the broadcast message includes: a PDCCH location corresponding to the ACK/NACK, and the broadcast message carries a mapping relationship between the indication information and the indication information of the ACK/NACK of the network device.
  • the sending, by the sending module 1002, the sending the target data to the network device according to the mapping relationship received by the receiving module 1001 includes:
  • Whether the ACK/NACK feedback is needed is determined by the processing module 1003 according to its own attribute;
  • the processing module 1003 carries the indication identifier in the target data according to the mapping relationship;
  • the processing module 1003 does not carry the indication identifier in the target data according to the mapping relationship;
  • the target data that does not carry the indication identifier is sent to the network device.
  • the broadcast message may further include: a reference condition that supports ACK/NACK feedback, and the reference condition includes: a terminal device reference attribute that supports ACK/NACK feedback.
  • the sending, by the sending module 1002, the sending the target data to the network device according to the mapping relationship received by the receiving module 1001 may include:
  • the processing module 1003 carries the indication identifier in the target data according to the mapping relationship;
  • the processing module 1003 does not carry the indication identifier in the target data according to the mapping relationship;
  • the target data that does not carry the indication identifier is sent to the network device.
  • the network device in the embodiment of the present invention is described above from the perspective of a modular functional entity.
  • the network device in the embodiment of the present invention is described below from the perspective of hardware processing.
  • FIG. 11 is a hardware block diagram of an embodiment of a network device according to an embodiment of the present invention.
  • the network device 1100 may have a large difference due to different configurations or performances, and may include one or more central processing units (central processing). Units, CPU) 1122 (eg, one or more processors) and memory 1132, one or more storage media 1130 that store application 1142 or data 1144 (eg, one or one storage device in Shanghai).
  • the memory 1132 and the storage medium 1130 may be short-term storage or persistent storage.
  • the program stored on storage medium 1130 may include one or more modules (not shown), each of which may include a series of instruction operations in the server.
  • central processor 1122 can be configured to communicate with storage medium 1130, executing a series of instruction operations in storage medium 1130 on network device 1100.
  • Network device 1100 may also include one or more power sources 1126, one or more wired or wireless network interfaces 1150, one or more input and output interfaces 1158, and/or one or more operating systems 1141, such as Windows ServerTM, Mac OS XTM, Unix TM, Linux TM, Free BSD TM and the like.
  • operating systems 1141 such as Windows ServerTM, Mac OS XTM, Unix TM, Linux TM, Free BSD TM and the like.
  • the steps performed by the network device in the foregoing embodiment may be based on the network device structure shown in FIG. 11.
  • the steps performed by the network device in the foregoing embodiment may be based on the network device structure shown in FIG. 11.
  • FIG. 11 For details, refer to the corresponding process in the foregoing embodiment, and details are not described herein again.
  • the terminal device in the embodiment of the present invention is described above from the perspective of a modular functional entity.
  • the terminal device in the embodiment of the present invention is described below from the perspective of hardware processing.
  • FIG. 12 is a hardware block diagram of an embodiment of a terminal device according to an embodiment of the present invention. For ease of description, only parts related to the embodiment of the present invention are shown. For details that are not disclosed, refer to the implementation of the present invention. Example method section.
  • the terminal device may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the terminal device is used as a mobile phone as an example:
  • FIG. 12 is a block diagram showing a partial structure of a mobile phone related to a terminal device provided by an embodiment of the present invention.
  • the mobile phone includes: a radio frequency (RF) circuit 1210, a memory 1220, an input unit 1230, a display unit 1240, a sensor 1250, an audio circuit 1260, a wireless fidelity (WiFi) module 1270, and a processor 1280. And power supply 1290 and other components.
  • RF radio frequency
  • the steps performed by the terminal device in the foregoing embodiment may be based on the structure of the terminal device shown in FIG. 12, and may be specifically referred to the corresponding process in the foregoing embodiment, and details are not described herein again.
  • FIG. 12 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. , including a number of instructions to make a computer device (which can be a personal computer, a server, Or a network device or the like) performing all or part of the steps of the method of the various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本发明实施例公开了一种非授权频谱下ACK/NACK反馈方法及相关设备，该方法包括：网络设备显示或隐示向终端设备通知映射关系，所述映射关系包括：终端设备发送的目标数据的信息与网络设备反馈正确应答消息ACK/错误应答消息NACK的指示信息的映射关系；所述网络设备接收终端设备发送的目标数据；所述网络设备根据所述目标数据的信息和所述映射关系确定对应的指示信息；所述网络设备根据所述确定反馈ACK/NACK的指示信息向所述终端设备反馈ACK/NACK。本发明实施例旨在解决网络设备回复ACK/NACK不及时，造成网络设备缓存堆积，以及网络设备回复ACK/NACK开销大的问题。

Description

一种非授权频谱下ACK/NACK反馈方法及相关设备 技术领域
本发明涉及移动通信技术领域，尤其涉及一种非授权频谱下ACK/NACK反馈方法及相关设备。
背景技术
通信设备之间通过使用频谱来实现无线通信，频谱大致可以分为两类，其中一类为授权(Licensed)频谱，另一类为非授权(Unlicensed)频谱。目前，1GHz以下非授权频谱出现了以SigFox和LoRA为代表的私有接入技术，并逐渐演变为业界的热点，未来将有海量终端在非授权频谱上工作。
对于非授权频谱的使用，由于多个系统共享非授权频段，多个系统之间信号相互干扰，若通信设备在使用非授权频谱进行通信时基于调度传输的方式，可以在一定程度上缓解系统之间的信号相互干扰。但这种基于调度传输的方式并非适用于全部终端设备，对于网络设备覆盖范围较远的终端设备，由于距离较远，信号衰减严重，导致网络设备可能需要多次通过下行信道向终端设备发送调度指令，终端设备才能够获知网络设备分配的频谱资源，这种方式将会增加调度信令的开销，且达不到非授权频谱中调度传输不受干扰的传输效果，因此，非授权场景下采用基于竞争的传输方式。
例如：终端设备采用基于竞争的方式接入网络设备，网络设备接收到终端设备发送的目标数据包后，会为终端设备回复ACK/NACK，考虑到下行信道资源受限，有时即便网络设备接收成功，也不能及时回复ACK/NACK，造成网络设备缓存堆积。此外，未来物联网(Internet of Things，IOT)终端数量庞大，ACK/NACK回复开销大。
因此，亟需一种在下行信道资源受限时，缓解网络设备缓存堆积，节省信令开销的方法。
发明内容
本发明实施例提供了一种非授权频谱下ACK/NACK反馈方法及相关设备，旨在解决网络设备回复ACK/NACK不及时，造成网络设备缓存堆积，以及网络设备回复ACK/NACK开销大的问题。
本发明实施例的第一方面提供一种非授权频谱下ACK/NACK反馈方法，包括：网络设备显示或隐示向终端设备通知映射关系，网络设备接收终端设备发送的目标数据；网络设备根据目标数据的信息和映射关系确定对应的指示信息；网络设备根据确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK。
其中，该映射关系包括：终端设备发送的目标数据的信息与网络设备反馈正确应答消息ACK/错误应答消息NACK的指示信息的映射关系。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备可以根据传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系向网络设备发送目标数据，网络设备可以根据传输目标数据的上行信道类型和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。或者，网络设备没有对上行信道进行划分时，终端设备可以根据目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系向网络设备发送目标数据，网络设备可以目标数据中是否携带指示标识和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
在下行信道资源受限的情况下，网络设备可以通过上述方法选择性地向终端设备反馈ACK/NACK，从而解决网络设备回复ACK/NACK不及时，造成网络设备缓存堆积，以及网络设备回复ACK/NACK开销大的问题。
可选地，网络设备根据目标数据的信息和映射关系确定对应的指示信息包括：网络设备确定传输目标数据的上行信道类型；网络设备根据传输目标数据的上行信道类型和映射关系，确定对应的指示信息。
其中，上行信道类型包括：反馈上行信道和非反馈上行信道。
本发明实施例中，若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，那么网络设备收到终端设备发送的目标数据后，可以 根据传输目标数据的上行信道类型和映射关系确定对应的指示信息。
可选地，网络设备根据传输目标数据的上行信道类型和映射关系，确定对应的指示信息包括：若目标数据是由反馈上行信道传输的，则网络设备根据映射关系确定指示信息为向终端设备反馈ACK/NACK；
或，若目标数据是由非反馈上行信道传输的，则网络设备根据映射关系确定指示信息为不向终端设备反馈ACK/NACK。
本发明实施例中，如果终端设备通过confirmed上行信道发送目标数据，则表明网络设备在收到目标数据后，需要向该目标数据对应的终端设备反馈ACK/NACK；如果终端设备通过unconfirmed上行信道发送目标数据，则表明网络设备在收到目标数据后，不需要向该目标数据对应的终端设备反馈ACK/NACK。
对于网络设备来，便于处理，节省PDCCH开销，并在广播消息中携带两种信道的划分以及使用方式，有助于资源选择和接入控制，保证/NACK，便于网络设备处理，节省PDCCH开销。
可选地，网络设备显示向终端设备通知映射关系包括：网络设备向终端设备发送广播消息。
其中，该广播消息包括：上行信道类型和反馈上行信道对应的物理下行控制信道PDCCH位置，广播消息中携带有传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系。
本发明实施例中，若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，那么传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系为一种显示的映射关系，即网络设备已经向终端设备明确哪种上行信道(如：confirmed上行信道)上传输的目标数据会反馈ACK/NACK，哪种上行信道(unconfirmed上行信道)上传输的目标数据不会反馈ACK/NACK。
其次，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，并在广播消息中携带两种信道的划分以及使用方式，有助于上行信道资源的选择和接入终端设备的控制，保证网络设备稳定工作。
可选地，广播消息还包括：反馈上行信道的选择条件，选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
本发明实施例中，终端设备针对上述confirmed上行信道和unconfirmed上行信道的选择，网络设备可以制定相应的规则，如：终端设备选择confirmed上行信道的概率p或选择confirmed上行信道需具备的终端设备属性(如：服务质量等级指示QCI、调制与编码策略MCS)等。当然，终端设备也可以自行决定如何选择上行信道，如：终端设备根据自身的属性，确定是否需要ACK/NACK反馈，具体此处不做限定。
需要说明的是，如果终端设备可以自行决定如何选择上行信道，那么广播消息中可以不包括反馈上行信道的选择条件。
可选地，网络设备根据目标数据的信息和映射关系确定对应的指示信息包括：网络设备确定目标数据中是否携带指示标识；网络设备根据目标数据中是否携带指示标识和映射关系，确定对应的指示信息。
本发明实施例中，若网络设备没有对上行信道进行划分，那么网络设备收到终端设备发送的目标数据后，可以根据目标数据中是否携带指示标识和映射关系确定对应的指示信息。
可选地，网络设备根据目标数据中是否携带指示标识和映射关系，确定对应的指示信息包括：若目标数据中携带指示标识，则网络设备根据映射关系确定指示信息为向终端设备反馈ACK/NACK；
或，若目标数据中未携带指示标识，则网络设备根据映射关系确定指示信息为不向终端设备反馈ACK/NACK。
本发明实施例中，如果终端设备在目标数据包头中携带1bit标志位的指示标识，则表明网络设备在收到目标数据后，需要向终端设备反馈ACK/NACK；如果终端设备不在目标数据包头中携带1bit标志位，则表明网络设备在收到目标数据后，不需要向终端设备反馈ACK/NACK。
对于网络设备来说，网络设备可以通过终端设备发送的目标数据中是否携带指示标识获知是否需要ACK反馈，便于网络设备处理，节省PDCCH开销。
可选地，指示标识为位于目标数据的数据包头中的比特bit标志位，如： 1bit、2bit等，具体此处不作限定。
可选地，网络设备隐示向终端设备通知映射关系包括：网络设备向终端设备发送广播消息。
其中，该广播消息包括：反馈ACK/NACK对应的PDCCH位置，广播消息中携带有目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系。
本发明实施例中，若网络设备没有对上行信道进行划分，那么目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系为一种隐示的映射关系，即网络设备并没有向终端设备明确哪些目标数据可以反馈ACK/NACK，而是由终端设备在目标数据中携带指示标识，以此来指示网络设备反馈ACK/NACK。
可选地，该广播消息还可以包括：支持ACK/NACK反馈的参考条件，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
本发明实施例中，在网络设备没有对上行信道进行划分时，那么该广播消息可以包括：反馈ACK/NACK对应的PDCCH位置和支持ACK/NACK反馈的参考条件，其中，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
需要说明的是，如果终端设备可以自行决定如何选择上行信道，那么广播消息中可以不包括支持ACK/NACK反馈的参考条件。
本发明实施例的第二方面提供一种非授权频谱下ACK/NACK反馈方法，包括：终端设备接收网络设备显示或隐示通知的映射关系；终端设备根据映射关系向网络设备发送目标数据；终端设备根据目标数据的信息和映射关系确定对应的指示信息；终端设备根据确定反馈ACK/NACK的指示信息监听网络设备反馈ACK/NACK。
其中，映射关系包括：终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系。
本发明实施例中，若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，那么终端设备可以根据网络设备设定的选择条件或者 自行决定，从而确定传输目标数据的上行信道类型，并通过确定的上行信道向网络设备发送目标数据，网络设备可以根据传输目标数据的上行信道类型和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK；若网络设备没有对上行信道进行划分，那么终端设备可以根据网络设备设定的支持ACK/NACK反馈的参考条件或者自行决定，从而确定目标数据中是否携带指示标识，并向网络设备发送该目标数据，网络设备可以目标数据中是否携带指示标识和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
可选地，终端设备接收网络设备显示通知的映射关系包括：终端设备接收网络设备发送的广播消息，广播消息包括：上行信道类型和反馈上行信道对应的PDCCH位置，上行信道类型包括：反馈上行信道和非反馈上行信道，广播消息中携带有传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，终端设备根据映射关系向网络设备发送目标数据包括：终端设备根据自身属性确定是否需要ACK/NACK反馈；若终端设备需要ACK/NACK反馈，则终端设备根据映射关系确定传输目标数据的上行信道为反馈上行信道；终端设备通过反馈上行信道向网络设备传输目标数据；
或，
若终端设备不需要ACK/NACK反馈，则终端设备根据映射关系确定传输目标数据的上行信道为非反馈上行信道；终端设备通过非反馈上行信道向网络设备传输目标数据。
可选地，该广播消息还可以包括：反馈上行信道的选择条件，选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
可选地，终端设备根据映射关系向网络设备发送目标数据包括：
若选择条件为选择反馈上行信道的p，则终端设备在[0，1]中随机选择数值x；终端设备将x与p进行比较；若x<p，则终端设备根据映射关系确定传输目标数据的上行信道为反馈上行信道；终端设备通过反馈上行信道向网络设备传输目标数据；
或，
若x>＝p，则终端设备根据映射关系确定传输目标数据的上行信道为非反馈上行信道；终端设备通过非反馈上行信道向网络设备传输目标数据。
可选地，终端设备根据映射关系向网络设备发送目标数据包括：若选择条件为选择反馈上行信道的终端设备参考属性，则终端设备将自身属性与参考属性进行比较；若终端设备自身属性达到参考属性，则终端设备根据映射关系确定传输目标数据的上行信道为反馈上行信道；终端设备通过反馈上行信道向网络设备传输目标数据；
或，
若终端设备自身属性未达到参考属性，则终端设备根据映射关系确定传输目标数据的上行信道为非反馈上行信道；终端设备通过非反馈上行信道向网络设备传输目标数据。
可选地，终端设备接收网络设备隐示通知的映射关系包括：终端设备接收网络设备发送的广播消息，广播消息包括：反馈ACK/NACK对应的PDCCH位置，广播消息中携带有目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，终端设备根据映射关系向网络设备发送目标数据包括：终端设备根据自身属性确定是否需要ACK/NACK反馈；若终端设备需要ACK/NACK反馈，则终端设备根据映射关系在目标数据中携带指示标识；终端设备向网络设备发送携带指示标识的目标数据；
或，
若终端设备不需要ACK/NACK反馈，则终端设备根据映射关系不在目标数据中携带指示标识；终端设备向网络设备发送未携带指示标识的目标数据。
可选地，该广播消息还可以包括：支持ACK/NACK反馈的参考条件，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
可选地，终端设备根据映射关系向网络设备发送目标数据包括：终端设备将自身属性与参考属性进行比较；若终端设备自身属性达到参考属性，则终端设备根据映射关系在目标数据中携带指示标识；终端设备向网络设备发送携带 指示标识的目标数据；
或，
若终端设备自身属性未达到参考属性，则终端设备根据映射关系不在目标数据中携带指示标识；终端设备向网络设备发送未携带指示标识的目标数据。
本发明实施例的第三方面提供一种网络设备，包括：
发送模块，用于显示或隐示向终端设备通知映射关系，其中，映射关系包括：终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系；
接收模块，用于接收终端设备发送的目标数据；
处理模块，用于根据接收模块接收到的目标数据的信息和映射关系确定对应的指示信息；
发送模块还用于根据处理模块处理得到的确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK。
可选地，处理模块用于根据接收模块接收到的目标数据的信息和映射关系确定对应的指示信息包括：
确定传输接收模块接收到的目标数据的上行信道类型，其中，上行信道类型包括：反馈上行信道和非反馈上行信道；
根据传输接收模块接收到的目标数据的上行信道类型和映射关系，确定对应的指示信息。
可选地，处理模块用于根据传输接收模块接收到的目标数据的上行信道类型和映射关系，确定对应的指示信息包括：
若目标数据是由反馈上行信道传输的，则根据映射关系确定指示信息为向终端设备反馈ACK/NACK；
或，
若目标数据是由非反馈上行信道传输的，则根据映射关系确定指示信息为不向终端设备反馈ACK/NACK。
可选地，发送模块用于显示向终端设备通知映射关系包括：
向终端设备发送广播消息，其中，广播消息包括：上行信道类型和反馈上 行信道对应的物理下行控制信道PDCCH位置，广播消息中携带有传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，广播消息还包括：反馈上行信道的选择条件，选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
可选地，处理模块用于根据接收模块接收到的目标数据的信息和映射关系确定对应的指示信息包括：
确定目标数据中是否携带指示标识；
根据目标数据中是否携带指示标识和映射关系，确定对应的指示信息。
可选地，处理模块用于根据目标数据中是否携带指示标识和映射关系，确定对应的指示信息包括：
若目标数据中携带指示标识，则根据映射关系确定指示信息为向终端设备反馈ACK/NACK；
或，
若目标数据中未携带指示标识，则根据映射关系确定指示信息为不向终端设备反馈ACK/NACK。
可选地，指示标识为位于目标数据的数据包头中的比特bit标志位。
可选地，发送模块用于隐示向终端设备通知映射关系包括：
向终端设备发送广播消息，其中，广播消息包括：反馈ACK/NACK对应的PDCCH位置，广播消息中携带有目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，广播消息还包括：支持ACK/NACK反馈的参考条件，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
本发明实施例的第四方面提供一种终端设备，包括：
接收模块，用于接收网络设备显示或隐示通知的映射关系，其中，映射关系包括：终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系；
发送模块，用于根据接收模块接收到的映射关系向网络设备发送目标数据；
处理模块，用于根据发送模块发送的目标数据的信息和接收模块接收到的映射关系确定对应的指示信息；还用于根据确定反馈ACK/NACK的指示信息监听网络设备反馈ACK/NACK。
可选地，接收模块用于接收网络设备显示通知的映射关系包括：
接收网络设备发送的广播消息，其中，广播消息包括：上行信道类型和反馈上行信道对应的PDCCH位置，上行信道类型包括：反馈上行信道和非反馈上行信道，广播消息中携带有传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，发送模块用于根据接收模块接收到的映射关系向网络设备发送目标数据包括：
通过处理模块根据自身属性确定是否需要ACK/NACK反馈；
若终端设备需要ACK/NACK反馈，则通过处理模块根据接收模块接收到的映射关系确定传输目标数据的上行信道为反馈上行信道；
通过处理模块确定的反馈上行信道向网络设备传输目标数据；
或，
若终端设备不需要ACK/NACK反馈，则通过处理模块根据接收模块接收到的映射关系确定传输目标数据的上行信道为非反馈上行信道；
通过处理模块确定的非反馈上行信道向网络设备传输目标数据。
可选地，广播消息还包括：反馈上行信道的选择条件，选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
可选地，发送模块用于根据接收模块接收到的映射关系向网络设备发送目标数据包括：
若选择条件为选择反馈上行信道的p，则通过处理模块在[0，1]中随机选择数值x；
通过处理模块将x与p进行比较；
若x<p，则通过处理模块根据接收模块接收到的映射关系确定传输目标数据的上行信道为反馈上行信道；
通过处理模块确定的反馈上行信道向网络设备传输目标数据；
或，
若x>＝p，则通过处理模块根据映射关系确定传输目标数据的上行信道为非反馈上行信道；
通过处理模块确定的非反馈上行信道向网络设备传输目标数据。
可选地，发送模块用于根据接收模块接收到的映射关系向网络设备发送目标数据包括：
若选择条件为选择反馈上行信道的终端设备参考属性，则通过处理模块将自身属性与参考属性进行比较；
若终端设备自身属性达到参考属性，则通过处理模块根据接收模块接收到的映射关系确定传输目标数据的上行信道为反馈上行信道；
通过处理模块确定的反馈上行信道向网络设备传输目标数据；
或，
若终端设备自身属性未达到参考属性，则通过处理模块根据映射关系确定传输目标数据的上行信道为非反馈上行信道；
通过处理模块确定的非反馈上行信道向网络设备传输目标数据。
可选地，接收模块用于接收网络设备隐示通知的映射关系包括：
接收网络设备发送的广播消息，广播消息包括：反馈ACK/NACK对应的PDCCH位置，广播消息中携带有目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，发送模块用于根据接收模块接收到的映射关系向网络设备发送目标数据包括：
通过处理模块根据自身属性确定是否需要ACK/NACK反馈；
若终端设备需要ACK/NACK反馈，则通过处理模块根据映射关系在目标数据中携带指示标识；
向网络设备发送携带指示标识的目标数据；
或，
若终端设备不需要ACK/NACK反馈，则通过处理模块根据映射关系不在目标数据中携带指示标识；
向网络设备发送未携带指示标识的目标数据。
可选地，广播消息还包括：支持ACK/NACK反馈的参考条件，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
可选地，发送模块用于根据接收模块接收到的映射关系向网络设备发送目标数据包括：
通过处理模块将自身属性与参考属性进行比较；
若终端设备自身属性达到参考属性，则通过处理模块根据映射关系在目标数据中携带指示标识；
向网络设备发送携带指示标识的目标数据；
或，
若终端设备自身属性未达到参考属性，则通过处理模块根据映射关系不在目标数据中携带指示标识；
向网络设备发送未携带指示标识的目标数据。
本发明实施例的第五方面提供一种网络设备，包括：处理器、存储器和总线；
其中，处理器与存储器通过总线连接，存储器用于存储程序代码，处理器用于调用程序代码执行第一方面任一项所述的方法。
本发明实施例的第六方面提供一种终端设备，包括：处理器、存储器和总线；
其中，处理器与存储器通过总线连接，存储器用于存储程序代码，处理器用于调用程序代码执行第二方面任一项所述的方法。
本发明实施例提供的技术方案中，网络设备显示或隐示向终端设备通知终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系，网络设备收到目标数据后，根据目标数据确定对应的指示信息，并根据确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK。因此相对于现有技术，本发明实施例有效避免网络设备因ACK/NACK回复不及时带来的缓存堆积问题，同时降低了网络设备的回复ACK/NACK开销。
附图说明
图1为本发明实施例中非授权频谱下ACK/NACK反馈方法一个实施例的系统架构图；
图2为本发明实施例中基于蜂窝的窄带物联网NB-cIoT基于调度传输的流程图；
图3为本发明实施例中非授权频谱下ACK/NACK反馈方法一个实施例的流程图；
图4为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图；
图5为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图；
图6为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图；
图7为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图；
图8为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图；
图9为本发明实施例中网络设备一个实施例的模块框图；
图10为本发明实施例中终端设备一个实施例的模块框图；
图11为本发明实施例中网络设备一个实施例的硬件框图；
图12为本发明实施例中终端设备一个实施例的硬件框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”和“第四”等(如果存在)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目标数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。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，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，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步骤或单元。
虽然前述以使用非授权频谱的通信系统为例进行了介绍，但本领域技术人员应当知晓，本发明实施例不仅仅适用于使用非授权频谱的通信系统，也可以适用于其他无线通信系统，例如全球移动通信系统(Global System for Mobile Communications，GSM)，通用移动通信系统(Universal Mobile Telecommunications System，UMTS)，码分多址接入(Code Division Multiple Access，CDMA)系统，(Long Term Evolution，LTE)系统，以及未来不断演进的网络系统等，具体此处不作限定。
本发明实施例主要应用于使用非授权频谱的通信系统，具体应用领域可以包括：智能抄表、工厂中的目标数据采集与智能办公等领域。该通信系统包括：终端设备和网络设备。
本发明实施例所涉及的终端设备，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(PCS，Personal Communication Service)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(WLL，Wireless Local Loop)站、个人数字助理(PDA，Personal Digital Assistant)等设备。无线终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终 端(User Terminal)、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment)。
本发明实施例所涉及的网络设备，可以是基站，或者接入点，或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(eNB或e-NodeB，evolutional Node B)，本申请并不限定。
请参阅图1，其为本发明实施例中非授权频谱下ACK/NACK反馈方法一个实施例的系统架构图，该通信系统包括：终端设备101和网络设备102，其中，网络设备102包括：核心网控制器1021、网关1022、基带处理单元1023、宏基站1024、微基站1025、射频单元1026等。
其中，终端设备101通过无线空口资源与宏基站1024、微基站1025、射频单元1026等网络设备建立通信连接，网关1022、基带处理单元1023和宏基站1024与核心网控制器1021连接。
应理解，宏基站1024、微基站1025、射频单元1026可以同时存在，也可以单独部署其中的一个或多个，具体此处不做限定。
请参阅图2，其为本发明实施例中基于蜂窝的窄带物联网NB-cIoT基于调度传输的流程图，该方法包括：
201、网络设备向终端设备发送广播消息，终端设备接收网络设备发送的广播消息。
该广播消息包括：可用的物理上行共享信道PUSCH资源、不同覆盖等级终端设备对应的物理下行控制信道PDCCH位置等信息，其中，PUSCH用于承载终端设备向网络设备发送的缓存状态报告(Buffer Status Report，BSR)，PDCCH用于承载网络设备向终端设备反馈的正确应答消息ACK/错误应答消息NACK。
网络设备可以通过广播消息告知终端设备可用的PUSCH资源、不同等级终端设备对应的PDCCH位置等信息，使得终端设备可以在可用的PUSCH上向网络设备发送BSR，并可以根据终端设备等级在对应的PDCCH上监听网络设备反馈的ACK/NACK。
202、终端设备向网络设备发送缓存状态报告，网络设备接收终端设备发送的缓存状态报告。
终端设备收到网络设备发送的广播消息后，可以从该广播消息中获取可用的PUSCH资源、不同覆盖等级终端设备对应的PDCCH位置等信息。
其次，终端设备可以通过可用的PUSCH向网络设备发送BSR，终端设备可以通过该BSR告知网络设备上行缓冲器Buffer中待发送的目标数据的数据量。
203、网络设备向终端设备发送上行信道资源分配消息，终端设备接收网络设备发送的上行信道资源分配消息。
网络设备收到终端设备发送的BSR后，可以从BSR中获知上行Buffer中待发送的目标数据的数据量，并根据相应的调度算法为终端设备分配对应的上行信道资源。
204、终端设备向网络设备发送目标数据，网络设备接收终端设备发送的目标数据。
终端设备收到网络设备发送的上行信道资源分配消息后，可以根据该上行信道资源分配消息获知网络设备为终端设备分配的上行信道资源，并通过该上行信道资源向网络设备发送目标数据。
205、网络设备向终端设备反馈ACK/NACK，终端设备接收网络设备反馈的ACK/NACK。
终端设备向网络设备发送目标数据后，若网络设备收到终端设备发送的目标数据，那么网络设备会向终端设备反馈ACK/NACK。
采用图2所示的方法，在下行信道资源受限的情况下，即便网络设备收到终端设备发送的目标数据，也不能及时地向终端设备回复ACK/NACK，特别是当网络设备负载重时，若对每个终端设备发送的目标数据都进行回复的话， 不仅ACK/NACK回复开销大，而且容易造成网络设备缓存堆积，导致网络设备工作不稳定。
基于此，本发明实施例提供一种非授权频谱下ACK/NACK反馈方法，旨在解决网络设备回复ACK/NACK不及时，造成网络设备缓存堆积，以及网络设备回复ACK/NACK开销大的问题。
请参阅图3，其为本发明实施例中非授权频谱下ACK/NACK反馈方法一个实施例的流程图，该方法包括：
301、网络设备向终端设备发送广播消息，终端设备接收网络设备发送的广播消息。
本发明实施例中，网络设备可以将上行信道划分为确认confirmed上行信道(即反馈上行信道)和非确认unconfirmed上行信道(即非反馈上行信道)两种类型。其中，confirmed上行信道为需要网络设备提供ACK/NACK反馈的上行信道，如：终端设备通过confirmed上行信道向网络设备发送目标数据，网络设备在confirmed上行信道上收到目标数据后，需要向终端设备反馈ACK/NACK。unconfirmed上行信道为不需要网络设备提供ACK/NACK反馈的上行信道，如：终端设备通过unconfirmed上行信道向网络设备发送目标数据，网络设备在unconfirmed上行信道上收到目标数据后，不需要向终端设备反馈ACK/NACK。
为此，本发明实施例可以通过目标数据传输的上行信道的不同作为指示信息，来指示网络设备是否反馈ACK/NACK。对于网络设备来说，通过从不同上行信道(confirmed上行信道或unconfirmed上行信道)上收到的目标数据来判断是否需要反馈ACK/NACK。在下行信道资源受限的情况下，网络设备只针对部分上行信道(如：confirmed上行信道)进行反馈，节省了网络设备回复ACK/NACK的开销。
其次，网络设备可以绑定confirmed上行信道与PDCCH的映射关系，在终端设备需要ACK/NACK反馈时，可以在对应的PDCCH上监听ACK/NACK。如：若网络设备在confirmed上行信道上收到终端设备发送的目标数据，相应地，网络设备会在confirmed上行信道对应的PDCCH上向终端设备反馈 ACK/NACK，为此，终端设备向网络设备发完目标数据后，可以在confirmed上行信道对应的PDCCH上监听ACK/NACK。
另外，终端设备针对上述confirmed上行信道和unconfirmed上行信道的选择，网络设备可以制定相应的规则，如：终端设备选择confirmed上行信道的概率p或选择confirmed上行信道需具备的终端设备属性(如：服务质量等级指示QCI、调制与编码策略MCS)等。当然，终端设备也可以自行决定如何选择上行信道，如：终端设备根据自身的属性，确定是否需要ACK/NACK反馈，具体此处不做限定。
应理解，网络设备也可以不对上行信道进行划分，也就是说，上行信道不会有confirmed上行信道和unconfirmed上行信道两种类型之分，网络设备可以告知终端设备支持ACK/NACK反馈的终端设备属性，包括终端设备的QCI、MCS等，终端设备可以根据自身的属性来获知网络设备能否提供ACK/NACK反馈，并利用指示标识(如：携带在目标数据的数据包头中的标志位(如：1bit、2bit等，具体此处不作限定))来告知网络设备，网络设备收到指示标识后获知终端设备对ACK/NACK反馈的需求。当然，终端设备也可以根据自身的属性自行决定是否需要ACK/NACK反馈，并利用指示标识来告知网络设备，网络设备收到指示标识后获知终端设备对ACK/NACK反馈的需求，具体此处不做限定。也就是说，本发明实施例通过终端设备发送目标数据时是否携带指示标识作为指示信息，从而用来指示网络设备是否反馈ACK/NACK。
在网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，那么该广播消息可以包括：上行信道类型、反馈上行信道对应的PDCCH位置和反馈上行信道的选择条件，其中，该选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
需要说明的是，如果终端设备可以自行决定如何选择上行信道，那么广播消息中可以不包括反馈上行信道的选择条件。
进一步地，广播消息中还可以携带传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系。终端设备在发送目标数据时，根据是否需要ACK/NACK反馈选择对应的上行信道，网络设备根据不同的上行 信道上收到的目标数据得到相应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
在本发明实施例中，若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，那么传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系为一种显示的映射关系，即网络设备已经向终端设备明确哪种上行信道(如：confirmed上行信道)上传输的目标数据会反馈ACK/NACK，哪种上行信道(unconfirmed上行信道)上传输的目标数据不会反馈ACK/NACK。
在网络设备没有对上行信道进行划分时，那么该广播消息可以包括：反馈ACK/NACK对应的PDCCH位置和支持ACK/NACK反馈的参考条件，其中，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
需要说明的是，如果终端设备可以自行决定如何选择上行信道，那么广播消息中可以不包括支持ACK/NACK反馈的参考条件。
进一步地，广播消息中还可以携带目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系。终端设备在发送目标数据时，根据是否需要ACK/NACK反馈而在目标数据中携带指示标识，网络设备收到目标数据后，根据目标数据中是否携带指示标识确定是否需要向终端设备反馈ACK/NACK。
在本发明实施例中，若网络设备没有对上行信道进行划分，那么目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系为一种隐示的映射关系，即网络设备并没有向终端设备明确哪些目标数据可以反馈ACK/NACK，而是由终端设备在目标数据中携带指示标识，以此来指示网络设备反馈ACK/NACK。
302、终端设备根据广播消息获知目标数据的信息和指示信息的映射关系。
若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，那么终端设备可以通过广播消息获知传输目标数据的上行信道类型和指示信息的映射关系，该传输目标数据的上行信道类型即为目标数据的信息。
除此之外，终端设备还可以通过广播消息获知上行信道类型、反馈上行信 道对应的PDCCH位置和反馈上行信道的选择条件，其中，该选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
需要说明的是，如果终端设备可以自行决定如何选择上行信道，那么广播消息中可以不包括反馈上行信道的选择条件。
若网络设备没有对上行信道进行划分时，那么终端设备可以通过广播消息获知目标数据中是否携带指示标识和指示信息的映射关系，该目标数据中是否携带指示标识即为目标数据的信息。
除此之外，终端设备还可以通过广播消息获知反馈ACK/NACK对应的PDCCH位置和支持ACK/NACK反馈的参考条件，其中，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
需要说明的是，如果终端设备可以自行决定如何选择上行信道，那么广播消息中可以不包括支持ACK/NACK反馈的参考条件。
303、终端设备根据映射关系向网络设备发送目标数据，网络设备接收终端设备发送的目标数据。
若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，那么终端设备可以根据网络设备设定的选择条件或者自行决定，从而确定传输目标数据的上行信道类型，并通过确定的上行信道向网络设备发送目标数据。
若网络设备没有对上行信道进行划分，那么终端设备可以根据网络设备设定的支持ACK/NACK反馈的参考条件或者自行决定，从而确定目标数据中是否携带指示标识，并向网络设备发送该目标数据。
304、网络设备根据目标数据的信息和映射关系确定对应的指示信息。
若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，那么网络设备收到终端设备发送的目标数据后，可以根据传输目标数据的上行信道类型和映射关系确定对应的指示信息。
若网络设备没有对上行信道进行划分，那么网络设备收到终端设备发送的目标数据后，可以根据目标数据中是否携带指示标识和映射关系确定对应的指示信息。
305、网络设备根据确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK。
若网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，且终端设备是通过confirmed上行信道向网络设备发送目标数据的，那么网络设备可以根据传输目标数据的上行信道类型和映射关系确定指示信息为向终端设备反馈ACK/NACK，网络设备根据确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK。
若网络设备没有对上行信道进行划分，而终端设备在目标数据中携带有反馈ACK/NACK的指示标识，那么网络设备可以根据目标数据中的反馈ACK/NACK的指示标识和映射关系确定指示信息为向终端设备反馈ACK/NACK，网络设备根据确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK。
306、终端设备根据确定反馈ACK/NACK的指示信息监听网络设备反馈ACK/NACK。
在指示信息为网络设备需要向终端设备反馈ACK/NACK时，那么终端设备向网络设备发完目标数据后，可以在对应的PDCCH上监听网络设备反馈的ACK/NACK。
需要说明的是，步骤306与步骤304或步骤305在执行时，没有先后顺序要求，终端设备可以向网络设备发完目标数据后，即可在对应的PDCCH上监听网络设备反馈的ACK/NACK，之后网络设备再根据目标数据的信息和映射关系确定对应的指示信息，以及根据确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK，具体此处不作限定。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备可以根据传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系向网络设备发送目标数据，网络设备可以根据传输目标数据的上行信道类型和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。或者，网络设备没有对上行信道进行划分时，终端设备可以根据目标数据中是否携带指 示标识与网络设备反馈ACK/NACK的指示信息的映射关系向网络设备发送目标数据，网络设备可以目标数据中是否携带指示标识和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
上面从整体思路对本发明实施例中非授权频谱下ACK/NACK反馈方法进行了描述，下面将结合具体应用场景对本发明实施例中非授权频谱下ACK/NACK反馈方法进行描述。
请参阅图4，其为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图，该方法包括：
401、终端设备与网络设备同步，并收听网络设备发送的广播消息。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，且终端设备在选择上行信道时，是以概率p的方式来选择confirmed上行信道和unconfirmed上行信道。
终端设备可以通过广播消息获知上行信道的划分情况，confirmed信道对应的PDCCH位置，以及选择confirmed上行信道的概率p。
402、终端设备判断是否有向网络设备发送的目标数据；若是，则执行步骤403，若否，则执行步骤407。
403、终端设备从[0，1]中随机选择一个数x，并判断x<p是否成立；若是，则执行步骤404，若否，则执行步骤406。
如果终端设备随机选择的一个数x小于p时，则终端设备会选择confirmed上行信道发送目标数据；反之，终端设备会选择unconfirmed上行信道发送目标数据。
404、终端设备通过confirmed上行信道发送目标数据。
如果终端设备通过confirmed上行信道发送目标数据，则表明网络设备在收到目标数据后，需要向该目标数据对应的终端设备反馈ACK/NACK。
405、终端设备在confirmed上行信道对应的PDCCH上监听ACK/NACK。
如果终端设备选择confirmed上行信道发送目标数据，那么终端设备在发送完目标数据后，会在confirmed上行信道对应的PDCCH上监听ACK/NACK。
406、终端设备通过unconfirmed上行信道发送目标数据；
如果终端设备通过unconfirmed上行信道发送目标数据，则表明网络设备在收到目标数据后，不需要向该目标数据对应的终端设备反馈ACK/NACK。
需要说明的是，如果终端设备选择unconfirmed上行信道发送目标数据，那么终端设备在发送完目标数据后，便结束本次发送过程，而不必在PDCCH上监听ACK/NACK，因此降低了终端设备的功耗。
407、结束。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备以概率p的方式来选择confirmed上行信道和unconfirmed上行信道，网络设备可以根据传输目标数据的上行信道类型和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
上面从网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备以概率p的方式来选择confirmed上行信道和unconfirmed上行信道为应用场景进行了描述，下面从网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备根据自身属性来选择confirmed上行信道和unconfirmed上行信道为应用场景进行描述。
请参阅图5，其为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图，该方法包括：
501～502：与图4中的401～402类似，具体如上所述，此处不再赘述。
503、终端设备判断自身属性是否满足选择confirmed上行信道的条件。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，且终端设备在选择上行信道时，是根据终端设备自身属性(如：服务质量等级指示QCI、调制与编码策略MCS)来选择confirmed上行信道和unconfirmed上行信道。
网络设备可以通过广播消息告知终端设备在选择confirmed上行信道发送目标数据时，终端设备自身需具备怎样的属性，如：终端设备的QCI、MCS等指标参数需要达到网络设备规定的阈值。
504～507：与图4中的404～407类似，具体如上所述，此处不再赘述。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备也可以根据自身属性来选择confirmed上行信道和unconfirmed上行信道，网络设备可以根据传输目标数据的上行信道类型和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
上面从网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备根据终端设备自身属性来选择confirmed上行信道和unconfirmed上行信道为应用场景进行了描述，下面从网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备根据自身属性自行决定是否需要ACK/NACK反馈来选择confirmed上行信道和unconfirmed上行信道为应用场景进行描述。
请参阅图6，其为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图，该方法包括：
601～602：与图4中的401～402类似，具体如上所述，此处不再赘述。
603、终端设备判断自身属性是否满足选择confirmed上行信道的条件。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道，且终端设备在选择上行信道时，是由终端设备根据自身属性自行决定是否需要ACK/NACK反馈来选择confirmed上行信道和unconfirmed上行信道。
终端设备可以根据自身的属性自行决定是否需要ACK/NACK反馈，而不需要网络设备制定上行信道的选择方式，节省了网络设备的功耗，同时广播消息也不需承载上行信道的选择方式的信息，节省了广播消息。
604～607：与图4中的404～407类似，具体如上所述，此处不再赘述。
本发明实施例中，网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备也可以根据自身属性来选择confirmed上行信道和unconfirmed上行信道，而不需要网络设备制定上行信道的选择方式，节省了网络设备的功耗，同时广播消息也不需承载上行信道的选择方式的信息，节省了广播消息。网络设备可以根据传输目标数据的上行信道类型和映射 关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
上面从网络设备将上行信道划分为confirmed上行信道和unconfirmed上行信道时，终端设备根据自身属性自行决定是否需要ACK/NACK反馈来选择confirmed上行信道和unconfirmed上行信道为应用场景进行了描述，下面从网络设备没有对上行信道进行划分时，终端设备根据自身属性来选择是否在目标数据中携带指示标识为应用场景进行描述。
请参阅图7，其为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图，该方法包括：
701～702：与图4中的401～402类似，具体如上所述，此处不再赘述。
703、终端设备从[0，1]中随机选择一个数x，并判断x<p’是否成立；若是，则执行步骤704，若否，则再次执行步骤708。
本发明实施例中，网络设备没有对上行信道进行划分，但网络设备会通过广播消息告知终端设备选择可用的上行信道资源和对应接入门限p’、可用的上行信道资源对应的PDCCH位置和支持ACK反馈的终端设备属性。
如果终端设备随机选择的一个数x小于p’时，则网络设备会允许终端设备接入；反之，网络设备不会允许终端设备接入。
704、终端设备根据广播消息，获知网络设备能否为本次目标数据发送提供ACK/NACK反馈；若是，则执行步骤705，若否，则执行步骤707。
终端设备根据自身属性以及广播消息中网络设备支持ACK反馈的终端设备属性来确定目标数据中是否携带指示标识。
705、终端设备在目标数据包头中携带1bit标志位。
如果终端设备在目标数据包头中携带1bit标志位的指示标识，则表明网络设备在收到目标数据后，需要向终端设备反馈ACK/NACK。
706、终端设备在PDCCH上监听ACK/NACK。
如果终端设备在目标数据包头中携带1bit标志位，那么终端设备在发送完目标数据后，会在发送目标数据的上行信道对应的PDCCH上监听ACK/NACK。而如果终端设备不在目标数据包头中携带1bit标志位，那么终 端设备在发送完目标数据后，不必在PDCCH上监听ACK/NACK，降低了终端设备的功耗。
707、终端设备不在目标数据包头中携带1bit标志位。
如果终端设备不在目标数据包头中携带1bit标志位，则表明网络设备在收到目标数据后，不需要向终端设备反馈ACK/NACK。
708、结束。
本发明实施例中，网络设备没有对上行信道进行划分时，终端设备可以根据自身属性来选择是否在目标数据中携带指示标识，网络设备可以根据目标数据中是否携带指示标识和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
上面从网络设备没有对上行信道进行划分时，终端设备根据自身属性来选择是否在目标数据中携带指示标识为应用场景进行了描述，下面从网络设备没有对上行信道进行划分时，终端设备根据自身属性自行决定是否需要ACK/NACK反馈来选择是否在目标数据中携带指示标识为应用场景进行描述。
请参阅图8，其为本发明实施例中非授权频谱下ACK/NACK反馈方法另一个实施例的流程图，该方法包括：
801～803：与图7中的701～703类似，具体如上所述，此处不再赘述。
804、终端设备根据自身属性，判断是否需要ACK/NACK反馈；若是，则执行步骤805，若否，则执行步骤807。
本发明实施例中，网络设备没有对上行信道进行划分，但终端设备可以根据自身的属性自行决定是否需要ACK/NACK反馈，终端设备可以根据自身的属性自行决定是否需要ACK/NACK反馈，而不需要网络设备制定上行信道的选择方式，节省了网络设备的功耗，同时广播消息也不需承载上行信道的选择方式的信息，节省了广播消息。
805～808：与图7中的705～708类似，具体如上所述，此处不再赘述。
本发明实施例中，网络设备没有对上行信道进行划分时，终端设备可以根据自身属性自行决定是否需要ACK/NACK反馈来选择是否在目标数据中携带 指示标识，而不需要网络设备制定上行信道的选择方式，节省了网络设备的功耗，同时广播消息也不需承载上行信道的选择方式的信息，节省了广播消息。网络设备可以根据目标数据中是否携带指示标识和映射关系确定对应的指示信息，并根据指示信息确定是否需要向终端设备反馈ACK/NACK。
上面对本发明实施例中的非授权频谱下ACK/NACK反馈方法进行了描述，下面对本发明实施例中的网络设备进行描述。
请参阅图9，其为本发明实施例中网络设备一个实施例的模块框图，该网络设备900包括：
发送模块901，用于显示或隐示向终端设备通知映射关系，其中，映射关系包括：终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系；
接收模块902，用于接收终端设备发送的目标数据；
处理模块903，用于根据接收模块902接收到的目标数据的信息和映射关系确定对应的指示信息；
发送模块901还用于根据处理模块903处理得到的确定反馈ACK/NACK的指示信息向终端设备反馈ACK/NACK。
需要说明的是，发送模块901对应的实体装置为发送器，接收模块902对应的实体装置为接收器，处理模块903对应的实体装置为处理器，上述模块的具体功能可以参照上述图3所示的方法实施例中网络设备对应的步骤或者功能，具体此处不再赘述。
可选地，处理模块903用于根据接收模块902接收到的目标数据的信息和映射关系确定对应的指示信息可以包括：
确定传输接收模块902接收到的目标数据的上行信道类型，其中，上行信道类型包括：反馈上行信道和非反馈上行信道；
根据传输接收模块902接收到的目标数据的上行信道类型和映射关系，确定对应的指示信息。
可选地，处理模块903用于根据传输接收模块902接收到的目标数据的上行信道类型和映射关系，确定对应的指示信息可以包括：
若目标数据是由反馈上行信道传输的，则根据映射关系确定指示信息为向终端设备反馈ACK/NACK；
或，
若目标数据是由非反馈上行信道传输的，则根据映射关系确定指示信息为不向终端设备反馈ACK/NACK。
可选地，发送模块901用于显示向终端设备通知映射关系可以包括：
向终端设备发送广播消息，其中，广播消息可以包括：上行信道类型和反馈上行信道对应的物理下行控制信道PDCCH位置，广播消息中携带有传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，广播消息还可以包括：反馈上行信道的选择条件，选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
可选地，处理模块903用于根据接收模块902接收到的目标数据的信息和映射关系确定对应的指示信息可以包括：
确定目标数据中是否携带指示标识；
根据目标数据中是否携带指示标识和映射关系，确定对应的指示信息。
可选地，处理模块903用于根据目标数据中是否携带指示标识和映射关系，确定对应的指示信息可以包括：
若目标数据中携带指示标识，则根据映射关系确定指示信息为向终端设备反馈ACK/NACK；
或，
若目标数据中未携带指示标识，则根据映射关系确定指示信息为不向终端设备反馈ACK/NACK。
可选地，指示标识为位于目标数据的数据包头中的比特bit标志位。
可选地，发送模块901用于隐示向终端设备通知映射关系可以包括：
向终端设备发送广播消息，其中，广播消息包括：反馈ACK/NACK对应的PDCCH位置，广播消息中携带有目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，广播消息还可以包括：支持ACK/NACK反馈的参考条件，参考 条件包括：支持ACK/NACK反馈的终端设备参考属性。
上面对本发明实施例中的网络设备进行了描述，下面对本发明实施例中的终端设备进行描述。
请参阅图10，其为本发明实施例中终端设备一个实施例的模块框图，该终端设备1000包括：
接收模块1001，用于接收网络设备显示或隐示通知的映射关系，其中，映射关系包括：终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系；
发送模块1002，用于根据接收模块1001接收到的映射关系向网络设备发送目标数据；
处理模块1003，用于根据发送模块1002发送的目标数据的信息和接收模块接收到的映射关系确定对应的指示信息；还用于根据确定反馈ACK/NACK的指示信息监听网络设备反馈ACK/NACK。
需要说明的是，接收模块1001对应的实体装置为接收器，发送模块1002对应的实体装置为发送器，处理模块1003对应的实体装置为处理器，上述模块的具体功能可以参照上述图3～图8所示的方法实施例中终端设备对应的步骤或者功能，具体此处不再赘述。
可选地，接收模块1001用于接收网络设备显示通知的映射关系可以包括：
接收网络设备发送的广播消息，其中，广播消息包括：上行信道类型和反馈上行信道对应的PDCCH位置，上行信道类型包括：反馈上行信道和非反馈上行信道，广播消息中携带有传输目标数据的上行信道类型与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，发送模块1002用于根据接收模块1001接收到的映射关系向网络设备发送目标数据可以包括：
通过处理模块1003根据自身属性确定是否需要ACK/NACK反馈；
若终端设备需要ACK/NACK反馈，则通过处理模块1003根据接收模块1001接收到的映射关系确定传输目标数据的上行信道为反馈上行信道；
通过处理模块1003确定的反馈上行信道向网络设备传输目标数据；
或，
若终端设备不需要ACK/NACK反馈，则通过处理模块1003根据接收模块1001接收到的映射关系确定传输目标数据的上行信道为非反馈上行信道；
通过处理模块1003确定的非反馈上行信道向网络设备传输目标数据。
可选地，广播消息还可以包括：反馈上行信道的选择条件，选择条件包括：选择反馈上行信道的概率p或选择反馈上行信道的终端设备参考属性。
可选地，发送模块1002用于根据接收模块1001接收到的映射关系向网络设备发送目标数据可以包括：
若选择条件为选择反馈上行信道的p，则通过处理模块1003在[0，1]中随机选择数值x；
通过处理模块1003将x与p进行比较；
若x<p，则通过处理模块1003根据接收模块1001接收到的映射关系确定传输目标数据的上行信道为反馈上行信道；
通过处理模块1003确定的反馈上行信道向网络设备传输目标数据；
或，
若x>＝p，则通过处理模块1003根据映射关系确定传输目标数据的上行信道为非反馈上行信道；
通过处理模块1003确定的非反馈上行信道向网络设备传输目标数据。
可选地，发送模块1002用于根据接收模块1001接收到的映射关系向网络设备发送目标数据可以包括：
若选择条件为选择反馈上行信道的终端设备参考属性，则通过处理模块将自身属性与参考属性进行比较；
若终端设备自身属性达到参考属性，则通过处理模块根据接收模块接收到的映射关系确定传输目标数据的上行信道为反馈上行信道；
通过处理模块确定的反馈上行信道向网络设备传输目标数据；
或，
若终端设备自身属性未达到参考属性，则通过处理模块根据映射关系确定传输目标数据的上行信道为非反馈上行信道；
通过处理模块确定的非反馈上行信道向网络设备传输目标数据。
可选地，接收模块1001用于接收网络设备隐示通知的映射关系可以包括：
接收网络设备发送的广播消息，广播消息包括：反馈ACK/NACK对应的PDCCH位置，广播消息中携带有目标数据中是否携带指示标识与网络设备反馈ACK/NACK的指示信息的映射关系。
可选地，发送模块1002用于根据接收模块1001接收到的映射关系向网络设备发送目标数据包括：
通过处理模块1003根据自身属性确定是否需要ACK/NACK反馈；
若终端设备需要ACK/NACK反馈，则通过处理模块1003根据映射关系在目标数据中携带指示标识；
向网络设备发送携带指示标识的目标数据；
或，
若终端设备不需要ACK/NACK反馈，则通过处理模块1003根据映射关系不在目标数据中携带指示标识；
向网络设备发送未携带指示标识的目标数据。
可选地，广播消息还可以包括：支持ACK/NACK反馈的参考条件，参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
可选地，发送模块1002用于根据接收模块1001接收到的映射关系向网络设备发送目标数据可以包括：
通过处理模块1003将自身属性与参考属性进行比较；
若终端设备自身属性达到参考属性，则通过处理模块1003根据映射关系在目标数据中携带指示标识；
向网络设备发送携带指示标识的目标数据；
或，
若终端设备自身属性未达到参考属性，则通过处理模块1003根据映射关系不在目标数据中携带指示标识；
向网络设备发送未携带指示标识的目标数据。
上面从模块化功能实体的角度对本发明实施例中的网络设备进行了描述， 下面从硬件处理的角度对本发明实施例中的网络设备进行描述。
请参见图11，其为本发明实施例中网络设备一个实施例的硬件框图，该网络设备1100可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上中央处理器(central processing units，CPU)1122(例如，一个或一个以上处理器)和存储器1132，一个或一个以上存储应用程序1142或数据1144的存储介质1130(例如一个或一个以上海量存储设备)。其中，存储器1132和存储介质1130可以是短暂存储或持久存储。存储在存储介质1130的程序可以包括一个或一个以上模块(图示没标出)，每个模块可以包括对服务器中的一系列指令操作。更进一步地，中央处理器1122可以设置为与存储介质1130通信，在网络设备1100上执行存储介质1130中的一系列指令操作。
网络设备1100还可以包括一个或一个以上电源1126，一个或一个以上有线或无线网络接口1150，一个或一个以上输入输出接口1158，和/或，一个或一个以上操作系统1141，例如Windows Server TM，Mac OS XTM，Unix TM,Linux TM，Free BSD TM等等。
上述实施例中由网络设备所执行的步骤可以基于该图11所示的网络设备结构，具体可以参考前述实施例中的对应过程，此处不再赘述。
上面从模块化功能实体的角度对本发明实施例中的终端设备进行了描述，下面从硬件处理的角度对本发明实施例中的终端设备进行描述。
请参见图12，其为本发明实施例中终端设备一个实施例的硬件框图，为了便于说明，仅示出了与本发明实施例相关的部分，具体技术细节未揭示的，请参照本发明实施例方法部分。该终端设备可以为包括手机、平板电脑、PDA(Personal Digital Assistant，个人数字助理)、POS(Point of Sales，销售终端)、车载电脑等任意终端设备，以终端设备为手机为例：
图12示出的是与本发明实施例提供的终端设备相关的手机的部分结构的框图。参考图12，手机包括：射频(Radio Frequency，RF)电路1210、存储器1220、输入单元1230、显示单元1240、传感器1250、音频电路1260、无线保真(wireless fidelity，WiFi)模块1270、处理器1280、以及电源1290等部件。
上述实施例中由终端设备所执行的步骤可以基于该图12所示的终端设备结构，具体可以参考前述实施例中的对应过程，此处不再赘述。
本领域技术人员可以理解，图12中示出的手机结构并不构成对手机的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或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一个存储介质中，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)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：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)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (42)

  1. 一种非授权频谱下ACK/NACK反馈方法，其特征在于，包括：
    网络设备显示或隐示向终端设备通知映射关系，所述映射关系包括：终端设备发送的目标数据的信息与网络设备反馈正确应答消息ACK/错误应答消息NACK的指示信息的映射关系；
    所述网络设备接收终端设备发送的目标数据；
    所述网络设备根据所述目标数据的信息和所述映射关系确定对应的指示信息；
    所述网络设备根据所述确定反馈ACK/NACK的指示信息向所述终端设备反馈ACK/NACK。
  2. 根据权利要求1所述的方法，其特征在于，所述网络设备根据所述目标数据的信息和所述映射关系确定对应的指示信息包括：
    所述网络设备确定传输所述目标数据的上行信道类型，所述上行信道类型包括：反馈上行信道和非反馈上行信道；
    所述网络设备根据传输所述目标数据的上行信道类型和所述映射关系，确定对应的指示信息。
  3. 根据权利要求2所述的方法，其特征在于，所述网络设备根据传输所述目标数据的上行信道类型和所述映射关系，确定对应的指示信息包括：
    若所述目标数据是由所述反馈上行信道传输的，则所述网络设备根据所述映射关系确定所述指示信息为向所述终端设备反馈ACK/NACK；
    或，
    若所述目标数据是由所述非反馈上行信道传输的，则所述网络设备根据所述映射关系确定所述指示信息为不向所述终端设备反馈ACK/NACK。
  4. 根据权利要求2或3所述的方法，其特征在于，所述网络设备显示向终端设备通知映射关系包括：
    所述网络设备向所述终端设备发送广播消息，所述广播消息包括：所述上行信道类型和所述反馈上行信道对应的物理下行控制信道PDCCH位置，所述广播消息中携带有传输所述目标数据的上行信道类型与所述网络设备反馈 ACK/NACK的指示信息的映射关系。
  5. 根据权利要求4所述的方法，其特征在于，所述广播消息还包括：所述反馈上行信道的选择条件，所述选择条件包括：选择所述反馈上行信道的概率p或选择所述反馈上行信道的终端设备参考属性。
  6. 根据权利要求1所述的方法，其特征在于，所述网络设备根据所述目标数据的信息和所述映射关系确定对应的指示信息包括：
    所述网络设备确定所述目标数据中是否携带指示标识；
    所述网络设备根据所述目标数据中是否携带指示标识和所述映射关系，确定对应的指示信息。
  7. 根据权利要求6所述的方法，其特征在于，所述网络设备根据所述目标数据中是否携带指示标识和所述映射关系，确定对应的指示信息包括：
    若所述目标数据中携带所述指示标识，则所述网络设备根据所述映射关系确定所述指示信息为向所述终端设备反馈ACK/NACK；
    或，
    若所述目标数据中未携带所述指示标识，则所述网络设备根据所述映射关系确定所述指示信息为不向所述终端设备反馈ACK/NACK。
  8. 根据权利要求6或7所述的方法，其特征在于，所述指示标识为位于所述目标数据的数据包头中的比特bit标志位。
  9. 根据权利要求6至8任一项所述的方法，其特征在于，所述网络设备隐示向终端设备通知映射关系包括：
    所述网络设备向所述终端设备发送广播消息，所述广播消息包括：反馈ACK/NACK对应的PDCCH位置，所述广播消息中携带有所述目标数据中是否携带指示标识与所述网络设备反馈ACK/NACK的指示信息的映射关系。
  10. 根据权利要求9所述的方法，其特征在于，所述广播消息还包括：支持ACK/NACK反馈的参考条件，所述参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
  11. 一种非授权频谱下ACK/NACK反馈方法，其特征在于，包括：
    终端设备接收网络设备显示或隐示通知的映射关系，所述映射关系包括： 终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系；
    所述终端设备根据所述映射关系向所述网络设备发送目标数据；
    所述终端设备根据所述目标数据的信息和所述映射关系确定对应的指示信息；
    所述终端设备根据确定反馈ACK/NACK的指示信息监听所述网络设备反馈ACK/NACK。
  12. 根据权利要求11所述的方法，其特征在于，所述终端设备接收网络设备显示通知的映射关系包括：
    所述终端设备接收所述网络设备发送的广播消息，所述广播消息包括：上行信道类型和反馈上行信道对应的PDCCH位置，所述上行信道类型包括：反馈上行信道和非反馈上行信道，所述广播消息中携带有传输所述目标数据的上行信道类型与所述网络设备反馈ACK/NACK的指示信息的映射关系。
  13. 根据权利要求12所述的方法，其特征在于，所述终端设备根据所述映射关系向所述网络设备发送目标数据包括：
    所述终端设备根据自身属性确定是否需要ACK/NACK反馈；
    若所述终端设备需要ACK/NACK反馈，则所述终端设备根据所述映射关系确定传输目标数据的上行信道为所述反馈上行信道；
    所述终端设备通过所述反馈上行信道向所述网络设备传输所述目标数据；
    或，
    若所述终端设备不需要ACK/NACK反馈，则所述终端设备根据所述映射关系确定传输目标数据的上行信道为所述非反馈上行信道；
    所述终端设备通过所述非反馈上行信道向所述网络设备传输所述目标数据。
  14. 根据权利要求12所述的方法，其特征在于，所述广播消息还包括：所述反馈上行信道的选择条件，所述选择条件包括：选择所述反馈上行信道的概率p或选择所述反馈上行信道的终端设备参考属性。
  15. 根据权利要求14所述的方法，其特征在于，所述终端设备根据所述 映射关系向所述网络设备发送目标数据包括：
    若所述选择条件为选择所述反馈上行信道的p，则所述终端设备在[0，1]中随机选择数值x；
    所述终端设备将所述x与p进行比较；
    若所述x<p，则所述终端设备根据所述映射关系确定传输目标数据的上行信道为所述反馈上行信道；
    所述终端设备通过所述反馈上行信道向所述网络设备传输所述目标数据；
    或，
    若所述x>＝p，则所述终端设备根据所述映射关系确定传输目标数据的上行信道为所述非反馈上行信道；
    所述终端设备通过所述非反馈上行信道向所述网络设备传输所述目标数据。
  16. 根据权利要求14所述的方法，其特征在于，所述终端设备根据所述映射关系向所述网络设备发送目标数据包括：
    若所述选择条件为选择所述反馈上行信道的终端设备参考属性，则所述终端设备将自身属性与所述参考属性进行比较；
    若所述终端设备自身属性达到所述参考属性，则所述终端设备根据所述映射关系确定传输目标数据的上行信道为所述反馈上行信道；
    所述终端设备通过所述反馈上行信道向所述网络设备传输所述目标数据；
    或，
    若所述终端设备自身属性未达到所述参考属性，则所述终端设备根据所述映射关系确定传输目标数据的上行信道为所述非反馈上行信道；
    所述终端设备通过所述非反馈上行信道向所述网络设备传输所述目标数据。
  17. 根据权利要求11所述的方法，其特征在于，所述终端设备接收网络设备隐示通知的映射关系包括：
    所述终端设备接收所述网络设备发送的广播消息，所述广播消息包括：反馈ACK/NACK对应的PDCCH位置，所述广播消息中携带有所述目标数据中 是否携带指示标识与所述网络设备反馈ACK/NACK的指示信息的映射关系。
  18. 根据权利要求16所述的方法，其特征在于，所述终端设备根据所述映射关系向所述网络设备发送目标数据包括：
    所述终端设备根据自身属性确定是否需要ACK/NACK反馈；
    若所述终端设备需要ACK/NACK反馈，则所述终端设备根据所述映射关系在所述目标数据中携带指示标识；
    所述终端设备向所述网络设备发送携带所述指示标识的目标数据；
    或，
    若所述终端设备不需要ACK/NACK反馈，则所述终端设备根据所述映射关系不在所述目标数据中携带指示标识；
    所述终端设备向所述网络设备发送未携带所述指示标识的目标数据。
  19. 根据权利要求17所述的方法，其特征在于，所述广播消息还包括：支持ACK/NACK反馈的参考条件，所述参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
  20. 根据权利要求19所述的方法，其特征在于，所述终端设备根据所述映射关系向所述网络设备发送目标数据包括：
    所述终端设备将自身属性与所述参考属性进行比较；
    若所述终端设备自身属性达到所述参考属性，则所述终端设备根据所述映射关系在所述目标数据中携带指示标识；
    所述终端设备向所述网络设备发送携带所述指示标识的目标数据；
    或，
    若所述终端设备自身属性未达到所述参考属性，则所述终端设备根据所述映射关系不在所述目标数据中携带指示标识；
    所述终端设备向所述网络设备发送未携带所述指示标识的目标数据。
  21. 一种网络设备，其特征在于，包括：
    发送模块，用于显示或隐示向终端设备通知映射关系，其中，所述映射关系包括：终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的指示信息的映射关系；
    接收模块，用于接收终端设备发送的目标数据；
    处理模块，用于根据所述接收模块接收到的目标数据的信息和所述映射关系确定对应的指示信息；
    所述发送模块还用于根据所述处理模块处理得到的确定反馈ACK/NACK的指示信息向所述终端设备反馈ACK/NACK。
  22. 根据权利要求21所述的网络设备，其特征在于，所述处理模块用于根据所述接收模块接收到的目标数据的信息和所述映射关系确定对应的指示信息包括：
    确定传输所述接收模块接收到的目标数据的上行信道类型，其中，所述上行信道类型包括：反馈上行信道和非反馈上行信道；
    根据传输所述接收模块接收到的目标数据的上行信道类型和所述映射关系，确定对应的指示信息。
  23. 根据权利要求22所述的网络设备，其特征在于，所述处理模块用于根据传输所述接收模块接收到的目标数据的上行信道类型和所述映射关系，确定对应的指示信息包括：
    若所述目标数据是由所述反馈上行信道传输的，则根据所述映射关系确定所述指示信息为向所述终端设备反馈ACK/NACK；
    或，
    若所述目标数据是由所述非反馈上行信道传输的，则根据所述映射关系确定所述指示信息为不向所述终端设备反馈ACK/NACK。
  24. 根据权利要求22或23所述的网络设备，其特征在于，所述发送模块用于显示向终端设备通知映射关系包括：
    向所述终端设备发送广播消息，其中，所述广播消息包括：所述上行信道类型和所述反馈上行信道对应的物理下行控制信道PDCCH位置，所述广播消息中携带有传输所述目标数据的上行信道类型与所述网络设备反馈ACK/NACK的指示信息的映射关系。
  25. 根据权利要求24所述的网络设备，其特征在于，所述广播消息还包括：所述反馈上行信道的选择条件，所述选择条件包括：选择所述反馈上行信 道的概率p或选择所述反馈上行信道的终端设备参考属性。
  26. 根据权利要求21所述的网络设备，其特征在于，所述处理模块用于根据所述接收模块接收到的目标数据的信息和所述映射关系确定对应的指示信息包括：
    确定所述目标数据中是否携带指示标识；
    根据所述目标数据中是否携带指示标识和所述映射关系，确定对应的指示信息。
  27. 根据权利要求26所述的网络设备，其特征在于，所述处理模块用于根据所述目标数据中是否携带指示标识和所述映射关系，确定对应的指示信息包括：
    若所述目标数据中携带所述指示标识，则根据所述映射关系确定所述指示信息为向所述终端设备反馈ACK/NACK；
    或，
    若所述目标数据中未携带所述指示标识，则根据所述映射关系确定所述指示信息为不向所述终端设备反馈ACK/NACK。
  28. 根据权利要求26或27所述的网络设备，其特征在于，所述指示标识为位于所述目标数据的数据包头中的比特bit标志位。
  29. 根据权利要求26至28任一项所述的网络设备，其特征在于，所述发送模块用于隐示向终端设备通知映射关系包括：
    向所述终端设备发送广播消息，其中，所述广播消息包括：反馈ACK/NACK对应的PDCCH位置，所述广播消息中携带有所述目标数据中是否携带指示标识与所述网络设备反馈ACK/NACK的指示信息的映射关系。
  30. 根据权利要求29所述的网络设备，其特征在于，所述广播消息还包括：支持ACK/NACK反馈的参考条件，所述参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
  31. 一种终端设备，其特征在于，包括：
    接收模块，用于接收网络设备显示或隐示通知的映射关系，其中，所述映射关系包括：终端设备发送的目标数据的信息与网络设备反馈ACK/NACK的 指示信息的映射关系；
    发送模块，用于根据所述接收模块接收到的映射关系向所述网络设备发送目标数据；
    处理模块，用于根据所述发送模块发送的目标数据的信息和所述接收模块接收到的映射关系确定对应的指示信息；还用于根据确定反馈ACK/NACK的指示信息监听所述网络设备反馈ACK/NACK。
  32. 根据权利要求31所述的终端设备，其特征在于，所述接收模块用于接收网络设备显示通知的映射关系包括：
    接收所述网络设备发送的广播消息，其中，所述广播消息包括：上行信道类型和反馈上行信道对应的PDCCH位置，所述上行信道类型包括：反馈上行信道和非反馈上行信道，所述广播消息中携带有传输所述目标数据的上行信道类型与所述网络设备反馈ACK/NACK的指示信息的映射关系。
  33. 根据权利要求32所述的终端设备，其特征在于，所述发送模块用于根据所述接收模块接收到的映射关系向所述网络设备发送目标数据包括：
    通过所述处理模块根据自身属性确定是否需要ACK/NACK反馈；
    若所述终端设备需要ACK/NACK反馈，则通过所述处理模块根据所述接收模块接收到的映射关系确定传输目标数据的上行信道为所述反馈上行信道；
    通过所述处理模块确定的反馈上行信道向所述网络设备传输所述目标数据；
    或，
    若所述终端设备不需要ACK/NACK反馈，则通过所述处理模块根据所述接收模块接收到的映射关系确定传输目标数据的上行信道为所述非反馈上行信道；
    通过所述处理模块确定的非反馈上行信道向所述网络设备传输所述目标数据。
  34. 根据权利要求32所述的终端设备，其特征在于，所述广播消息还包括：所述反馈上行信道的选择条件，所述选择条件包括：选择所述反馈上行信道的概率p或选择所述反馈上行信道的终端设备参考属性。
  35. 根据权利要求34所述的终端设备，其特征在于，所述发送模块用于根据所述接收模块接收到的映射关系向所述网络设备发送目标数据包括：
    若所述选择条件为选择所述反馈上行信道的p，则通过所述处理模块在[0，1]中随机选择数值x；
    通过所述处理模块将所述x与p进行比较；
    若所述x<p，则通过所述处理模块根据所述接收模块接收到的映射关系确定传输目标数据的上行信道为所述反馈上行信道；
    通过所述处理模块确定的反馈上行信道向所述网络设备传输所述目标数据；
    或，
    若所述x>＝p，则通过所述处理模块根据所述映射关系确定传输目标数据的上行信道为所述非反馈上行信道；
    通过所述处理模块确定的非反馈上行信道向所述网络设备传输所述目标数据。
  36. 根据权利要求34所述的终端设备，其特征在于，所述发送模块用于根据所述接收模块接收到的映射关系向所述网络设备发送目标数据包括：
    若所述选择条件为选择所述反馈上行信道的终端设备参考属性，则通过所述处理模块将自身属性与所述参考属性进行比较；
    若所述终端设备自身属性达到所述参考属性，则通过所述处理模块根据所述接收模块接收到的映射关系确定传输目标数据的上行信道为所述反馈上行信道；
    通过所述处理模块确定的反馈上行信道向所述网络设备传输所述目标数据；
    或，
    若所述终端设备自身属性未达到所述参考属性，则通过所述处理模块根据所述映射关系确定传输目标数据的上行信道为所述非反馈上行信道；
    通过所述处理模块确定的非反馈上行信道向所述网络设备传输所述目标数据。
  37. 根据权利要求31所述的终端设备，其特征在于，所述接收模块用于接收网络设备隐示通知的映射关系包括：
    接收所述网络设备发送的广播消息，所述广播消息包括：反馈ACK/NACK对应的PDCCH位置，所述广播消息中携带有所述目标数据中是否携带指示标识与所述网络设备反馈ACK/NACK的指示信息的映射关系。
  38. 根据权利要求36所述的终端设备，其特征在于，所述发送模块用于根据所述接收模块接收到的映射关系向所述网络设备发送目标数据包括：
    通过所述处理模块根据自身属性确定是否需要ACK/NACK反馈；
    若所述终端设备需要ACK/NACK反馈，则通过所述处理模块根据所述映射关系在所述目标数据中携带指示标识；
    向所述网络设备发送携带所述指示标识的目标数据；
    或，
    若所述终端设备不需要ACK/NACK反馈，则通过所述处理模块根据所述映射关系不在所述目标数据中携带指示标识；
    向所述网络设备发送未携带所述指示标识的目标数据。
  39. 根据权利要求37所述的终端设备，其特征在于，所述广播消息还包括：支持ACK/NACK反馈的参考条件，所述参考条件包括：支持ACK/NACK反馈的终端设备参考属性。
  40. 根据权利要求39所述的终端设备，其特征在于，所述发送模块用于根据所述接收模块接收到的映射关系向所述网络设备发送目标数据包括：
    通过所述处理模块将自身属性与所述参考属性进行比较；
    若所述终端设备自身属性达到所述参考属性，则通过所述处理模块根据所述映射关系在所述目标数据中携带指示标识；
    向所述网络设备发送携带所述指示标识的目标数据；
    或，
    若所述终端设备自身属性未达到所述参考属性，则通过所述处理模块根据所述映射关系不在所述目标数据中携带指示标识；
    向所述网络设备发送未携带所述指示标识的目标数据。
  41. 一种网络设备，其特征在于，包括：处理器、存储器和总线；
    所述处理器与所述存储器通过所述总线连接，所述存储器用于存储程序代码，所述处理器用于调用所述程序代码执行如权利要求1～10任一项所述的方法。
  42. 一种终端设备，其特征在于，包括：处理器、存储器和总线；
    所述处理器与所述存储器通过所述总线连接，所述存储器用于存储程序代码，所述处理器用于调用所述程序代码执行如权利要求11～20任一项所述的方法。
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