WO2018023501A1 - 一种harq应答信息传输方法及设备 - Google Patents

一种harq应答信息传输方法及设备 Download PDF

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Publication number
WO2018023501A1
WO2018023501A1 PCT/CN2016/093120 CN2016093120W WO2018023501A1 WO 2018023501 A1 WO2018023501 A1 WO 2018023501A1 CN 2016093120 W CN2016093120 W CN 2016093120W WO 2018023501 A1 WO2018023501 A1 WO 2018023501A1
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WO
WIPO (PCT)
Prior art keywords
subframe
information
user equipment
network device
harq response
Prior art date
Application number
PCT/CN2016/093120
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English (en)
French (fr)
Inventor
李晓翠
徐凯
张莉莉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US16/323,098 priority Critical patent/US20190181989A1/en
Priority to CN201680080084.1A priority patent/CN108702258B/zh
Priority to PCT/CN2016/093120 priority patent/WO2018023501A1/zh
Priority to EP16911098.8A priority patent/EP3487100B1/en
Publication of WO2018023501A1 publication Critical patent/WO2018023501A1/zh

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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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a HARQ response information transmission method and device.
  • the base station For the Hybrid Automatic Repeat-Request (HARQ) in the case of the Frequency Division Duplexing (FDD), the base station sends downlink data to the user equipment (User Equipment, UE) in the subframe n, and the UE receives After the downlink data, the HARQ response information is sent to the base station in the subframe n+4. If the HARQ response information sent by the UE is negative (NACK), the base station may retransmit the downlink data to the UE in the subframe n+8.
  • NACK negative
  • the base station For downlink HARQ in the case of Time Division Duplexing (TDD), the base station transmits downlink data to the UE in subframe n, and after receiving data, the UE performs different uplink/downlink configurations (UL/DL) as shown in Table 1. Configuration), the HARQ response information can be sent to the base station in subframe n+k.
  • TDD Time Division Duplexing
  • UL/DL uplink/downlink configurations
  • LAA-LTE Lens-Assisted Access Using Long Term Evolution
  • TDM Time Division Multiplexing
  • the embodiment of the invention provides a method and a device for transmitting HARQ response information, which are used to provide a method for performing HARQ feedback in a LAA-LTE system.
  • the first aspect provides a method for transmitting HARQ response information, where the method includes: the network device sends first information to the user equipment, where the first information is used to indicate that the user equipment sends the HARQ response information to the network device on the unlicensed carrier. Subframe information. The network device receives the HARQ response information sent by the user equipment on the subframe indicated by the first information.
  • the network device may send the first information to the user equipment, where the first information indicates, by which subframe the user equipment can send the HARQ response information to the network device.
  • the user equipment may send the HARQ response information to the network device according to the first information, that is, perform HARQ feedback, that is, the embodiment of the present invention provides a HARQ feedback mode, which is better in this manner.
  • the HARQ feedback is performed, and the subframe indicated by the network device is an uplink subframe, and the selection failure that may be caused by the user equipment selecting the subframe itself is also avoided.
  • the first information is used to indicate a single subframe, where the first information includes a subframe number or a subframe number of the indicated single subframe Transfer amount.
  • the subframe number offset is used to indicate the offset of the subframe number of the single subframe relative to the subframe number of the subframe in which the network device sends the downlink data to the user equipment, and the downlink data is the downlink data corresponding to the HARQ response information.
  • the first information may indicate a single subframe, and the indication is relatively simple.
  • the user equipment may more easily clarify which subframe the network device indicates according to the first information, thereby directly going to the network on the subframe.
  • the device sends the HARQ response information, because the first information indicates that the number of subframes is small, so that the amount of data of the first information is also small, saving transmission resources, and for the user equipment. It is said that the workload of parsing the first information is also small, and the burden on the device is relatively light.
  • the first information is used to indicate a subframe window, where the first information includes multiple subframes located in a subframe window indicated by the network device At least one of a subframe number, a subframe number of the start subframe in the subframe window, and a subframe number of the end subframe, and a subframe number and a subframe span information of the start subframe in the subframe window .
  • the subframe span information is used to indicate the number of subframes indicated by the first information.
  • the first information may indicate multiple subframes, because the user equipment needs to preempt the channel when sending the HARQ response information to the network device in the subframe indicated by the first information, then the preemptive channel may be unsuccessful. If the first information indicates a plurality of subframes, the user equipment may also preempt the channel in other subframes indicated by the first information after the preemptive channel is unsuccessful, thereby improving the success rate of the user equipment to send the HARQ response information.
  • the multiple subframes are consecutive subframes or Discontinuous subframes.
  • the subframe indicated by the first information may be a continuous subframe or a discontinuous subframe, as long as it is an uplink subframe, which is not limited in this embodiment of the present invention.
  • the first The information is carried in the downlink control information of the physical downlink control channel.
  • the downlink control information may be used for scheduling downlink data, and the first information may be directly carried in the downlink control information, so that the network device does not need to specifically send the first information, and the manner is relatively simple, and the interaction process between the devices may also be reduced.
  • the network device After receiving the HARQ response information sent by the user equipment in the subframe indicated by the first information, if the device fails to receive the HARQ response information in the subframe indicated by the first information, the network device receives the notification message sent by the user equipment, where The notification message is used to indicate that the network device is in other non-granting The HARQ response information is received on the weight carrier or the HARQ response information is received on the authorized carrier.
  • the preemption channel may be unsuccessful if the user equipment preempts the subframe indicated by the first information. If the channel is unsuccessful, the user equipment may send the HARQ response information to the network device on the unlicensed carrier or the authorized carrier across the carrier to ensure that the HARQ response information can be sent normally. Because the network device needs to receive the HARQ response information in the correct location, if the user equipment needs to send the HARQ response information to the network device across the carrier or the authorized carrier, the user equipment may send a notification to the network device. The message notifies the network device, so that the network device can correctly receive the HARQ response information, and avoid the network device receiving failure.
  • the network device After receiving the HARQ response information sent by the user equipment in the subframe indicated by the first information, if the device fails to receive the HARQ response information in the subframe indicated by the first information, the network device sends a notification message to the user equipment, where the notification is sent. The message is used to indicate that the user equipment sends HARQ response information on other unlicensed carriers or sends HARQ response information on the authorized carrier.
  • the network device may determine that the HARQ response information fails to be received.
  • the notification message may be sent to the user equipment to indicate that the user equipment sends the HARQ response information to the network device on the unlicensed carrier or the authorized carrier across the carrier to ensure normal transmission of the HARQ response information.
  • the network device may be more aware of the situation of each carrier. Therefore, the network device indicates that the user equipment is specifically transmitted across the carrier to which carrier, and the user equipment sends according to the indication of the network device, and the probability of successful transmission increases.
  • a second aspect provides a method for transmitting a HARQ response information, where the method includes: receiving, by a user equipment, first information sent by a network device, where the first information is used to indicate that the user equipment sends the HARQ response information to the network device on the unlicensed carrier. Subframe information. User equipment in the first information office The HARQ response information is sent to the network device on the indicated subframe.
  • the network device may send the first information to the user equipment, where the first information indicates, by which subframe the user equipment can send the HARQ response information to the network device, then the user equipment receives the first After the information is sent, the HARQ response information is sent to the network device according to the first information, that is, the HARQ feedback is performed, and the success rate of the HARQ response information is improved.
  • the first information is used to indicate a single subframe, where the first information includes a subframe number or a subframe number of the indicated single subframe Transfer amount.
  • the subframe number offset is used to indicate the offset of the subframe number of the single subframe relative to the subframe number of the subframe in which the network device sends the downlink data to the user equipment, and the downlink data is the downlink data corresponding to the HARQ response information.
  • the first information is used to indicate a subframe window, where the first information includes multiple subframes located in a subframe window indicated by the network device At least one of a subframe number, a subframe number of the start subframe in the subframe window, and a subframe number of the end subframe, and a subframe number and a subframe span information of the start subframe in the subframe window .
  • the subframe span information is used to indicate the number of subframes indicated by the first information.
  • the multiple subframes are consecutive subframes or Discontinuous subframes.
  • the first The information is carried in the downlink control information of the physical downlink control channel.
  • the user equipment in a fifth possible implementation manner of the second aspect, in the user After the device receives the first information sent by the network device, the user equipment preempts the channel on the unlicensed carrier. In this case, the user equipment sends the HARQ response information to the network device in the subframe indicated by the first information, which can be implemented in the following manner: if the user equipment preempts the unlicensed carrier If the channel is successful, the user equipment sends the HARQ response information to the network device in the subframe indicated by the first information.
  • the user equipment needs to preempt the channel when transmitting the HARQ response information to the network device in the subframe indicated by the first information. If the preemption channel is successful, the user equipment can normally send the HARQ to the network device in the subframe indicated by the first information. In response to the information, the network device may also normally receive the HARQ response information according to the first information.
  • the method may further include: if the user equipment fails to preempt the channel on the unlicensed carrier, the user equipment cross-carrier Sending HARQ response information to the network device to the other unlicensed carrier; or if the user equipment fails to preempt the channel on the unlicensed carrier, the user equipment sends the HARQ response information to the network device across the carrier to the authorized carrier.
  • the user equipment may send the HARQ response information to the network device or the authorized carrier to the network device.
  • the HARQ response information is flexible and avoids the failure of HARQ response information transmission.
  • a network device which can include a transmitter and a receiver.
  • the transmitter is configured to send the first information to the user equipment, where the first information is used to indicate the subframe information used by the user equipment to send the HARQ response information to the network device on the unlicensed carrier.
  • the receiver is configured to receive the HARQ response information sent by the user equipment on the subframe indicated by the first information.
  • the first information is used to indicate a single subframe, where the first information includes a subframe number or a subframe number of the indicated single subframe Transfer amount.
  • the subframe number offset is used to indicate the offset of the subframe number of the single subframe relative to the subframe number of the subframe in which the network device sends the downlink data to the user equipment, and the downlink data is the downlink data corresponding to the HARQ response information.
  • the first information is used to indicate a subframe window, where the first information includes multiple subframes located in a subframe window indicated by the network device a subframe number, a subframe number of the start subframe in the subframe window, and a subframe number of the end subframe, And at least one of a subframe number of the start subframe and a subframe span information in the subframe window.
  • the subframe span information is used to indicate the number of subframes indicated by the first information.
  • the multiple subframes are consecutive subframes or Discontinuous subframes.
  • the first The information is carried in the downlink control information of the physical downlink control channel.
  • the receiver The method is further configured to: if the HARQ response information fails to be received on the subframe indicated by the first information, receive the notification message sent by the user equipment.
  • the notification message is used to instruct the network device to receive HARQ response information on other unlicensed carriers or to receive HARQ response information on the authorized carrier.
  • the transmitter The method is further configured to: if the receiver fails to receive the HARQ response information in the subframe indicated by the first information, send a notification message to the user equipment.
  • the notification message is used to indicate that the user equipment sends HARQ response information on other unlicensed carriers or sends HARQ response information on the authorized carrier.
  • a user equipment which can include a receiver and a transmitter.
  • the receiver is configured to receive the first information sent by the network device, where the first information is used to indicate the subframe information used by the user equipment to send the HARQ response information to the network device on the unlicensed carrier.
  • the transmitter is configured to send the HARQ response information to the network device on the subframe indicated by the first information.
  • the first information is used to indicate a single subframe, where the first information includes a subframe number or a subframe number of the indicated single subframe Transfer amount.
  • the subframe number offset is used to indicate the offset of the subframe number of the single subframe relative to the subframe number of the subframe in which the network device sends the downlink data to the user equipment, and the downlink data is the downlink data corresponding to the HARQ response information.
  • the first information is used to indicate a subframe window, where the first information includes multiple subframes located in a subframe window indicated by the network device At least one of a subframe number, a subframe number of the start subframe in the subframe window, and a subframe number of the end subframe, and a subframe number and a subframe span information of the start subframe in the subframe window .
  • the subframe span information is used to indicate the number of subframes indicated by the first information.
  • the multiple subframes are consecutive subframes or Discontinuous subframes.
  • the first The information is carried in the downlink control information of the physical downlink control channel.
  • the user The device also includes a processor.
  • the processor is configured to: preempt the channel on the unlicensed carrier.
  • the transmitter is configured to: if the preemption channel succeeds on the unlicensed carrier, send the HARQ response information to the network device in the subframe indicated by the first information.
  • the transmitter is further configured to: if the user equipment fails to preempt the channel on the unlicensed carrier, cross-carrier to other The HARQ response information is sent to the network device on the unlicensed carrier; or if the user equipment fails to preempt the channel on the unlicensed carrier, the cross-carrier to the authorized carrier sends the HARQ response information to the network device.
  • a fifth aspect there is provided another network device, the network device comprising a functional unit for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a user equipment comprising a functional unit for performing the method of any of the possible implementations of the second aspect or the second aspect.
  • an embodiment of the present invention provides a computer storage medium, configured to store computer software instructions used by the network device, where Program.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the user equipment, including a program designed to perform the above aspects for a user equipment.
  • the network device sends a subframe for transmitting the HARQ response information to the user equipment, and the user equipment does not need to select the subframe, and the HARQ response information may not be sent because the user equipment may not be the uplink subframe. In the case, the transmission success rate of the HARQ response information is improved.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for transmitting HARQ response information according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a user equipment sending HARQ response information according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a user equipment sending HARQ response information according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • User equipment which is a device that provides voice and/or data connectivity to a user, for example, may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem.
  • the user equipment can communicate with the core network via a Radio Access Network (RAN) to exchange voice and/or data with the RAN.
  • the user equipment may include a UE, a wireless terminal device, a mobile terminal device, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile Station, a Remote Station, and a Pickup Station.
  • Access Point AP
  • Remote Terminal Access Terminal
  • User Terminal User Agent
  • User Device etc.
  • it can be a mobile phone (or "cellular" phone), a computer with a mobile terminal, a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistants
  • a network device such as a base station (e.g., an access point), may specifically refer to a device in the access network that communicates with the wireless terminal over one or more sectors over 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 device 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 an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a system such as Long Term Evolution (LTE) or Long Term Evolution (LTE-A).
  • NodeB evolved base station
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • the LAA-LTE system uses the LTE technology in the unlicensed carrier. Based on the carrier aggregation architecture, the licensed carrier is used as the primary cell (PCell) and the unlicensed carrier is used as the secondary cell (SCell). At the same time, in order to ensure coexistence with other technologies working on unlicensed carriers, the LAA-LTE system adopts a channel-competing access mechanism of Listen-Before-Talk (LBT), that is, regardless of user equipment or network equipment. Before sending data on an unlicensed carrier, you must first preempt the channel, and the channel preemption succeeds in sending data.
  • LBT Listen-Before-Talk
  • a physical downlink control channel for transmitting control information such as a physical downlink control channel (Physical Downlink Control Channel, PDCCH), or may be other physical downlink control channels, or the PDCCH may have other names, which are not limited in this embodiment of the present invention.
  • PDCCH Physical Downlink Control Channel
  • system and “network” in the embodiments of the present invention may be used interchangeably.
  • Multiple means two or more.
  • the character "/”, unless otherwise specified, generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 includes a user equipment and a network equipment, and the user equipment and the network equipment can communicate with each other.
  • the user equipment After the network device sends the downlink data to the user equipment, the user equipment returns the HARQ response information to the network device according to the receiving status of the downlink data, where the HARQ response information includes two types: an acknowledgement (ACK) and a NACK.
  • ACK acknowledgement
  • NACK NACK
  • the embodiment of the present invention provides a new HARQ response information transmission method.
  • the method provided by the embodiment of the present invention can be applied not only to the LAA-LTE system, but also to other systems that do not have a fixed uplink and downlink configuration, and can also be applied to a system with a fixed uplink and downlink configuration, for example,
  • the technical solutions provided in the embodiments of the present invention may be applied to the system in the FDD and the TDD, and the embodiments of the present invention are not limited.
  • an embodiment of the present invention provides a method for transmitting HARQ response information by using an application scenario as shown in FIG. 1.
  • a network device is a base station.
  • the base station may send the data to the user equipment at the same time.
  • Sending the first information where the first information is used to indicate the subframe information used by the user equipment to send the HARQ response information to the base station on the unlicensed carrier.
  • the user equipment receives the first information sent by the base station.
  • the first information may be sent through a physical downlink control channel.
  • the first information may be carried in the downlink control information of the physical downlink control channel (the embodiment shown in FIG. 2 is taken as an example), or the first information may also be sent separately, or the first information may also be carried in the physical downlink control.
  • the embodiment of the present invention does not limit this.
  • the downlink control information is scheduling information that is sent by the base station to the user equipment, and the downlink control information is, for example, Downlink Control Information (DCI), or may be other information.
  • DCI Downlink Control Information
  • the base station may first send the DCI to the user equipment, and schedule the downlink transmission resource for the user equipment by using the DCI, so that the user equipment may receive the downlink data sent by the base station according to the downlink transmission resource indicated by the DCI.
  • the downlink control information may carry information such as uplink and downlink transmission resource allocation, HARQ information, or power control.
  • the DCI sent by the base station to the user equipment generally includes the downlink transmission resource scheduled for the downlink data.
  • HARQ response information is generally specified by agreement.
  • the subframe in which the user equipment selects to send the HARQ response information is likely to be not an uplink subframe, which may cause the HARQ response information to be sent.
  • the base station may send the first information to the user equipment, where the first information may indicate in which subframe the user equipment sends the HARQ response information, and the user equipment does not need to select the subframe, and the base station knows which subframes are uplinks. Therefore, it is also possible to avoid the case where the subframe selected by the user equipment is not an uplink subframe, and the success rate of transmission of the HARQ response information is improved.
  • the first information may be used to indicate a single subframe, in which case the first information may include a subframe number or a subframe number offset of a single subframe indicated by the first information. If the first information includes the subframe number offset of the indicated single subframe, the subframe number offset may be that the subframe number of the subframe indicated by the first information is sent to the user equipment with respect to the network device.
  • the base station sends a DCI to the user equipment, where the DCI is used to schedule downlink data that the base station sends to the user equipment in the subframe n, where the first information is carried in the DCI, and one or more bits are added in the DCI.
  • the newly added bit is used as the first information, and is used to carry the k or n+k, and is used to indicate that the user equipment sends the HARQ response information for the downlink data to the base station in the subframe n+k.
  • n+k is the subframe number of the user equipment that sends the HARQ response information.
  • the user equipment can calculate n+k by itself, and k can be regarded as a subframe number offset. If the first information directly includes n+k, the user equipment does not need to perform calculation.
  • the subframe selected by the base station may be an uplink subframe that is closest to the distance of n.
  • the base station sends downlink data in subframe n, and subframe n, subframe n+1, subframe n+2, and subframe n+3 are downlink subframes, subframe n+4, subframe n+5, and sub-frames.
  • the frame n+6 and the subframe n+7 are uplink subframes.
  • the distance between the subframe n+4 and the subframe n is the closest, that is, the difference between n+4 and n is the smallest, so
  • the base station can cause the first information to indicate the subframe n+4, so that the delay of feeding back the HARQ response information can be minimized.
  • the subframe indicated by the first information is not limited to this.
  • the base station may also select an appropriate uplink subframe as the subframe indicated by the first information based on other factors. For example, the subframe and the base station that may feed back the HARQ response message may be required.
  • the subframe spacing for transmitting downlink data is greater than or equal to 4 ms, so k in the selected uplink subframe n+k is greater than or equal to 4.
  • the first information may also be used to indicate multiple subframes.
  • the first information may also be considered to indicate a subframe window, where the first information is included in the subframe window. Multiple sub-frames.
  • the first information may include a subframe number of the multiple subframes located in the subframe window indicated by the first information, and a subframe number and an end of the starting subframe in the subframe window.
  • the subframe span information is used to indicate the number of subframes indicated by the first information, that is, according to the subframe number and the subframe span information of the start subframe in the subframe window, the first frame included in the subframe window may be obtained.
  • the subframe number of the subframe indicated by the information may be consecutive subframes or discontinuous subframes.
  • the initial subframe may be the uplink subframe closest to the distance of n.
  • the base station sends downlink data in subframe n, and subframe n, subframe n+1, subframe n+2, and subframe n+3 are downlink subframes, subframe n+4, subframe n+5, and sub-frames.
  • the frame n+6 and the subframe n+7 are uplink subframes.
  • the distance between the subframe n+4 and the subframe n is the closest, that is, the difference between n+4 and n is the smallest, so
  • the base station may make the starting subframe of the subframe window indicated by the first information into subframe n+4.
  • the span of the subframe window indicated by the first information may be selected within a suitable range, for example, less than or equal to 10, or less than or equal to 8, this can minimize the delay in feeding back HARQ response information.
  • the subframe indicated by the first information is not limited thereto, and the base station may also select an appropriate uplink subframe as the subframe indicated by the first information based on other factors.
  • the base station sends a DCI to the user equipment, where the DCI is used to schedule downlink data that the base station sends to the user equipment in the subframe n, where the first information is carried in the DCI, and one or more bits are added in the DCI.
  • the new bit is used to carry the first information indicating the subframe window, and is used to indicate that the user equipment sends the HARQ response information for the downlink data to the base station in the uplink subframe included in the subframe window.
  • the subframe window indicated by the first information is a subframe window in which the starting subframe is a subframe n+4 and the ending subframe is a subframe n+7
  • the uplink subframe includes four uplink subframes, respectively It is a subframe n+4, a subframe n+5, a subframe n+6, and a subframe n+7.
  • the first information may include subframe numbers of the four subframes, respectively n+4, n+5, n+6, and n+7; or the first information may include the start subframe of the subframe window.
  • the subframe number and the subframe number of the end subframe are n+4 and n+7, respectively, and the user equipment can learn that the subframe indicated by the first information is subframe n+4 and subframe n+5, respectively.
  • the subframe n+6, and the subframe n+7; or the first information may include the subframe number and the subframe span information of the start subframe of the subframe window, respectively, n+4 and 3, and the user equipment may
  • the subframes indicated by the learned first information are subframe n+4, subframe n+5, subframe n+6, and subframe n+7, respectively.
  • the numerical values herein are merely examples for explaining the solution of the embodiment of the present invention, and are not limited thereto in practical applications.
  • the above example describes the case where the subframe numbers of the subframes indicated by the first information are continuous.
  • the subframe numbers indicated by the first information may also be discontinuous.
  • the subframe n+4, the subframe n+5, the subframe n+6, and the subframe n+7 are all uplink subframes, and the first information may be used to indicate the subframe.
  • Part of the uplink subframe such as indicating subframe n+4, subframe n+6, and subframe n+7, not indicating subframe n+5, or indicating subframe n+4 and subframe n+7, instead of The sub-frame n+5 and the sub-frame n+6 are indicated, in which case the sub-frame number indicated by the first sub-frame is discontinuous.
  • the base station sends downlink data to the user equipment, and the user equipment receives the downlink data.
  • the embodiment of the present invention is an example in which the first information is carried in the DCI, and the DCI is used to schedule the downlink transmission resource. Therefore, after the base station sends the DCI to the user equipment, the base station sends the downlink data scheduled by the DCI to the user equipment.
  • the user equipment sends the HARQ response information for the downlink data to the base station, and the base station receives the HARQ response information. If the user equipment determines that the downlink data is successfully received, the HARQ response information sent by the user equipment is an ACK. If the user equipment determines that the downlink data reception fails, the HARQ response information sent by the user equipment is a NACK.
  • the user equipment determines whether the HARQ response information sent to the base station is an ACK or a NACK according to the receiving condition of the downlink data, and then sends the HARQ response information to the base station on the unlicensed carrier according to the subframe indicated by the first information.
  • the user equipment directly sends the HARQ response information to the base station according to the subframe number indicated by the first information.
  • the base station sends a DCI to the user equipment by using the PDCCH of the subframe n, where the DCI includes the first information, where the first information indicates that the user equipment sends the subframe n+5 on the unlicensed carrier to the base station.
  • the user equipment preempts the channel on the unlicensed carrier through the LBT mechanism in the subframe n+5 according to the indication in the DCI. If the channel preemption succeeds, the user equipment sends the downlink to the base station in the subframe n+5.
  • HARQ response information of the data In FIG.
  • subframe n, subframe n+1, subframe n+2, and subframe n+3 are downlink subframes, subframe n+4, subframe n+5, subframe n+6, and sub-frames.
  • Frame n+7 is an uplink subframe.
  • the user equipment needs to preempt the channel when transmitting data on the unlicensed carrier, there may be a case where the channel preemption is unsuccessful.
  • the embodiment shown in FIG. 3 is continued as an example, if the user equipment is in the subcarrier of the unlicensed carrier. If the preemption channel on the frame n+5 is unsuccessful, the user equipment obviously cannot send the HARQ response information to the base station through the subframe indicated by the base station. In this case, in order to protect The certificate can send the HARQ response information to the base station, and the user equipment can send the corresponding HARQ response information from the unlicensed carrier to other unlicensed carriers for transmission, of course, the premise of the multi-carrier case is naturally The non-authorized carrier needs to preempt the channel.
  • the HARQ response information is sent to the base station through the unlicensed carrier.
  • the user equipment may also send the HARQ response information to the base station across the carrier to the authorized carrier.
  • the user equipment may directly cross the carrier from the unlicensed carrier. The transmission is performed on the authorized carrier, and the channel is not required to be preempted on the authorized carrier, and the transmission can be directly performed, and the efficiency is high, and the transmission success rate is also improved.
  • the user equipment may first send the HARQ response information to the network device when the user equipment crosses the carrier to the unlicensed carrier or the authorized carrier.
  • Sending a notification message to the network device the notification message is used to indicate that the user equipment sends the HARQ response information to the network device across the carrier to the unlicensed carrier, or is used to indicate that the user equipment sends the HARQ to the network device across the carrier to the unlicensed carrier.
  • the message is acknowledged so that the network device can listen to and receive the HARQ response message at the correct location. If the user equipment performs multiple cross-carrier processes, for example, after the preemption channel is successfully sent on multiple unlicensed carriers and sent successfully, the user equipment needs to send to the network device every time the cross-carrier is performed. Notification message.
  • the network device acts as the receiver, and if the subframe indicated by the first information does not receive the HARQ response information sent by the user equipment, the network device determines that the user equipment fails to send.
  • the network device may send a notification message to the user equipment, where the notification message is used to indicate that the user equipment sends the HARQ response information to the network device across the carrier to the unlicensed carrier.
  • the notification message may indicate a specific non- Authorizing the carrier, or the notification message is used to indicate that the user equipment sends the HARQ response information to the network device across the carrier to the authorized carrier, so that the user equipment can perform cross-carrier transmission according to the indication of the network device.
  • Send, network devices can also receive correctly. If the network device sends a notification message to the user equipment, the notification message is used to indicate that the user equipment sends the HARQ response information to the network device on the unlicensed carrier, and the network device still does not receive the HARQ on the indicated unlicensed carrier. In response to the information, the network device determines that the user equipment is still transmitting the device, and the network device may continue to send a notification message to the user equipment to indicate that the user equipment transmits the HARQ response information to the other unlicensed carriers or the authorized carrier again.
  • the user equipment may send the HARQ response information to the base station in any one of the subframes indicated by the first information.
  • the base station sends a DCI to the user equipment by using the PDCCH of the subframe n, where the DCI includes the first information, where the first information indicates the subframe n+5, the sub-device of the user equipment on the unlicensed carrier.
  • Frame n+6, or subframe n+7 transmits HARQ response information for the downlink data to the base station.
  • the user equipment may preempt the channel on the unlicensed carrier through the LBT mechanism in the subframe n+5 according to the indication in the DCI. If the channel preemption succeeds, the subframe n+5 on the unlicensed carrier.
  • the HARQ response information for the downlink data is sent to the base station, and the HARQ response information for the downlink data is not transmitted to the base station in subframe n+6 and subframe n+7. If the user equipment fails to preempt the channel on the unlicensed carrier in the subframe n+5, the user equipment can preempt the channel on the unlicensed carrier through the LBT mechanism in the subframe n+6. If the channel preemption succeeds, the user equipment The HARQ response information for the downlink data is sent to the base station in the subframe n+6 on the authorized carrier, and it is not necessary to consider transmitting the HARQ response information for the downlink data to the base station in the subframe n+7.
  • subframe n, subframe n+1, subframe n+2, and subframe n+3 are downlink subframes, subframe n+4, subframe n+5, subframe n+6, and sub-frames.
  • Frame n+7 is an uplink subframe.
  • the user equipment is likely to preempt the channel in the subframe n+5, the subframe n+6, and the subframe n+7, and the user equipment cannot pass the subframe indicated by the base station.
  • the user equipment in order to ensure that the HARQ response information can be transmitted to the base station, if it is a multi-carrier, the user equipment can send the corresponding HARQ response message.
  • the information is transmitted from the unlicensed carrier to other unlicensed carriers. If the user equipment does not successfully occupy the channel on all the unlicensed carriers of the user equipment, the user equipment may also cross the carrier to the authorized carrier to the base station. Send the HARQ response message.
  • the user equipment may directly transmit the unlicensed carrier from the carrier to the authorized carrier, without being required on the authorized carrier. Preempting the channel can be sent directly, with high efficiency, and also improves the transmission success rate.
  • the user equipment may also send the HARQ response information to the network device when the user equipment crosses the carrier to the unlicensed carrier or the authorized carrier.
  • Sending a notification message to the network device the notification message is used to indicate that the user equipment sends the HARQ response information to the network device across the carrier to the unlicensed carrier, or is used to indicate that the user equipment sends the information to the network device across the carrier to the unlicensed carrier.
  • the HARQ acknowledges the information so that the network device can listen to and receive the HARQ response information at the correct location.
  • the network device acts as the receiver, and if the subframe indicated by the first information does not receive the HARQ response information sent by the user equipment, the network device determines that the user equipment fails to send.
  • the network device may send a notification message to the user equipment, where the notification message is used to indicate that the user equipment sends the HARQ response information to the network device across the carrier to the unlicensed carrier.
  • the notification message may indicate a specific non- The authorization carrier, or the notification message is used to indicate that the user equipment sends the HARQ response information to the network device across the carrier, so that the user equipment can perform cross-carrier transmission according to the indication of the network device, and the network device can also receive the information correctly.
  • the authorized carrier needs to transmit more information, so the resources on the authorized carrier are more valuable. Therefore, in the embodiment of the present invention, the HARQ response information is sent on the unlicensed carrier as much as possible. Of course, if the transmission is unsuccessful on the unlicensed carrier, it can also be sent to the authorized carrier to ensure the success rate of the HARQ response information.
  • an embodiment of the present invention provides a first network device, which may include a processor 501, a transmitter 502, and a receiver 503.
  • the processor 501 may include a central processing unit (CPU) or an application specific integrated circuit (ASIC), and may include one or more integrated circuits for controlling program execution, and may include using a field programmable gate array.
  • a hardware circuit developed by a Field Programmable Gate Array (FPGA) may include a baseband chip.
  • the transmitter 502 can be used for network communication with an external device, for example, can communicate with an external device through a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • the receiver 503 can be used for network communication with an external device, for example, can communicate with an external device through a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • the receiver 503 and the transmitter 502 may be a function module, for example, a function module may implement both a sending function and a receiving function, or may be a different sub-module in a function module, or a receiver 503 and send
  • the 502 can also be two functional modules that are independent of one another.
  • the network device may further include a memory 504.
  • the number of memories 504 can be one or more.
  • the memory 504 may include a Read Only Memory (ROM), a Random Access Memory (RAM), and a disk storage, and the like.
  • the memory 504 can be used to store program code required by the processor 501 to perform tasks, and can also be used to store data and the like.
  • the memory 504 is an optional functional module rather than a mandatory functional module, it is shown in dashed lines in FIG.
  • the memory 504, the receiver 503, and the transmitter 502 may be connected to the processor 501 via the bus 500 (as shown in FIG. 5 as an example), or may be connected to the processor 501 through a dedicated connection line.
  • the network device may be used to perform the method provided by the embodiment shown in FIG. 2 above, and may be, for example, a network device as described above. Therefore, for the functions implemented by the units in the network device, Please refer to the description of the previous method section for details.
  • an embodiment of the present invention provides a first user equipment, which may include a processor 601, a transmitter 602, and a receiver 603.
  • the processor 601 may include a CPU or an ASIC, may include one or more integrated circuits for controlling program execution, may include hardware circuits developed using an FPGA, and may include a baseband chip.
  • the transmitter 602 can be used for network communication with an external device, for example, can communicate with an external device through a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • the receiver 603 can be used for network communication with an external device, for example, can communicate with an external device through a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • a network such as an Ethernet, a wireless access network, a wireless local area network, or a wired network.
  • the receiver 603 and the transmitter 602 may be a function module, for example, a function module may implement both a sending function and a receiving function, or may be a different sub-module in a function module, or a receiver 603 and send
  • the 602 can also be two functional modules that are independent of one another.
  • the user equipment may further include a memory 604.
  • the number of memories 604 can be one or more.
  • Memory 604 can include ROM, RAM, and disk storage, and the like.
  • the memory 604 can be used to store program code required by the processor 601 to perform tasks, and can also be used to store data and the like. Wherein, since the memory 604 is an optional functional module rather than a mandatory functional module, it is shown in dashed lines in FIG.
  • the memory 604, the receiver 603, and the transmitter 602 may be connected to the processor 601 via the bus 600 (as shown in FIG. 6 as an example), or may be connected to the processor 601 through a dedicated connection line.
  • the code corresponding to the method shown above is solidified into the chip, thereby enabling the chip to perform the method shown in the previous embodiment while it is running.
  • How to design and program the processor 601 is a technique well known to those skilled in the art, and details are not described herein again.
  • the user equipment may be used to perform the method provided by the embodiment shown in FIG. 2 above, for example, may be a user equipment as described above. Therefore, for the functions and the like implemented by the units in the user equipment, reference may be made to the description of the previous method part, and details are not described herein.
  • an embodiment of the present invention provides a second network device, which may include a sending unit 701 and a receiving unit 702.
  • the network device may further include a processing unit 703, which is shown together in FIG. 7. Since the processing unit 703 is an optional functional module, it is drawn in the form of a dashed line in FIG. 7.
  • the physical device corresponding to the sending unit 701 may be the transmitter 502 in the embodiment shown in FIG. 5, and the physical device corresponding to the receiving unit 702 may be the receiver 503 in the embodiment shown in FIG.
  • the physical device corresponding to unit 703 may be processor 501 in the embodiment shown in FIG.
  • the network device may be used to perform the method provided by the embodiment shown in FIG. 2 above, and may be, for example, a network device as described above. Therefore, for the functions and the like implemented by the units in the network device, reference may be made to the description of the previous method part, and details are not described herein.
  • an embodiment of the present invention provides a second user equipment, where the user equipment may include a sending unit 801 and a receiving unit 802.
  • the network device may further include a processing unit 803, which is shown together in FIG. Since the processing unit 803 is an optional functional module, it is drawn in the form of a dashed line in FIG.
  • the physical device corresponding to the sending unit 801 may be the transmitter 602 in the embodiment shown in FIG. 6, and the physical device corresponding to the receiving unit 802 may be the receiver 603 in the embodiment shown in FIG.
  • the physical device corresponding to unit 803 may be processor 601 in the embodiment shown in FIG. 6.
  • the user equipment may be used to perform the method provided by the embodiment shown in FIG. 2 above, for example, may be a user equipment as described above. Therefore, for the functions and the like implemented by the units in the user equipment, reference may be made to the description of the previous method part, and details are not described herein.
  • the network device may send the first information to the user equipment, where the first information indicates, by which subframe the user equipment can send the HARQ response information to the network device.
  • the user equipment may send the HARQ response information to the network device according to the first information, that is, perform HARQ feedback, that is, the embodiment of the present invention provides a HARQ feedback mode, which is better in this manner.
  • the HARQ feedback is performed, and the subframe indicated by the network device is an uplink subframe, and the selection failure that may be caused by the user equipment selecting the subframe itself is also avoided.
  • the disclosed apparatus and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit or unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations 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 electrical or otherwise.
  • 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 implement the embodiments of the present invention.
  • the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may also be an independent physical module.
  • 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.
  • all or part of the technical solution of the present invention may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device, such as a personal computer. , a server, or a network device or the like, or a processor performs all or part of the steps of the method of the various embodiments of the present invention.
  • the foregoing storage medium includes: a Universal Serial Bus flash drive, a mobile hard disk, a Read-Only Memory (ROM), a random access memory (RAM), a disk. Or a variety of media such as optical discs that can store program code.

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Abstract

一种HARQ应答信息传输方法及设备，用以提供在LAA-LTE系统中进行HARQ反馈的方式。一种HARQ应答信息传输方法包括：网络设备向用户设备发送第一信息；所述第一信息用于指示所述用户设备在非授权载波上向所述网络设备发送HARQ应答信息所采用的子帧信息；所述网络设备在所述第一信息所指示的子帧接收所述用户设备发送的所述HARQ应答信息。

Description

一种HARQ应答信息传输方法及设备 技术领域
本发明涉及移动通信技术领域，尤其涉及一种HARQ应答信息传输方法及设备。
背景技术
对于频分双工(Frequency Division Duplexing，FDD)情况的下行混合自动重传请求(Hybrid Automatic Repeat-request，HARQ)，基站在子帧n发送下行数据给用户设备(User Equipment，UE)，UE接收该下行数据后，在子帧n+4发送HARQ应答信息给基站，如果UE发送的HARQ应答信息是否定应答(NACK)，则基站可以在子帧n+8内向该UE重传该下行数据。
对于时分双工(Time Division Duplexing，TDD)情况的下行HARQ，基站在子帧n发送下行数据给UE，UE接收数据后，根据如表1中所示的不同的上行/下行配置(UL/DL configuration)，可以在子帧n+k发送HARQ应答信息给基站。
表1
Figure PCTCN2016093120-appb-000001
然而，对于长期演进的授权辅助接入(Licensed-Assisted Access Using Long Term Evolution，LAA-LTE)系统而言，由于LAA-LTE中的上下行传输采用时分复用(Time Division Multiplexing，TDM)进行传输，且没有固定的上下行配置，因此在LAA-LTE系统中如果采用FDD中的HARQ反馈方案，那么子帧N+4很可能并不是一个上行子帧，因此不能够发送相应的HARQ应答信息，而 又因为LAA-LTE系统中没有固定的上下行配比，因此也不能采用TDD中的HARQ反馈方案。因此，目前LAA-LTE系统中尚无在非授权载波上进行HARQ反馈的方案。
发明内容
本发明实施例提供一种HARQ应答信息传输方法及设备，用以提供在LAA-LTE系统中进行HARQ反馈的方式。
第一方面，提供一种HARQ应答信息传输方法，该方法包括：网络设备向用户设备发送第一信息，第一信息用于指示用户设备在非授权载波上向网络设备发送HARQ应答信息所采用的子帧信息。网络设备在第一信息所指示的子帧上接收用户设备发送的HARQ应答信息。
本发明实施例中，因为网络设备知晓究竟哪个子帧是上行子帧，因此网络设备可以向用户设备发送第一信息，第一信息就指示用户设备可以通过哪个子帧向网络设备发送HARQ应答信息，那么用户设备接收第一信息后就可以根据第一信息来向网络设备发送HARQ应答信息，即进行HARQ反馈，即，本发明实施例提供了一种HARQ反馈方式，通过这种方式可以较好地进行HARQ反馈，且网络设备所指示的子帧是上行子帧，也避免因为用户设备自己选择子帧而可能导致的选择失败的情况。
结合第一方面，在第一方面的第一种可能的实现方式中，第一信息用于指示单个子帧，其中，第一信息包含所指示的单个子帧的子帧号或者子帧号偏移量。子帧号偏移量用于指示单个子帧的子帧号相对于网络设备向用户设备发送下行数据的子帧的子帧号的偏移量，该下行数据为HARQ应答信息对应的下行数据。
在这种情况下，第一信息可以指示单个子帧，指示较为简单，用户设备根据第一信息就可以较容易地明确网络设备所指示的是哪个子帧，从而直接在该子帧上向网络设备发送HARQ应答信息，第一信息因为指示的子帧较少，因此可以认为第一信息的数据量也较小，节省传输资源，且对于用户设备来 说解析第一信息的工作量也较小，设备负担较轻。
结合第一方面，在第一方面的第二种可能的实现方式中，第一信息用于指示子帧窗口，其中，第一信息包含位于网络设备所指示的子帧窗口中的多个子帧的子帧号、及子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至少一种。子帧跨度信息用于指示第一信息所指示的子帧的数量。
在这种情况下，第一信息可以指示多个子帧，因为用户设备在第一信息所指示的子帧向网络设备发送HARQ应答信息时需要首先抢占信道，那么就可能存在抢占信道不成功的情况，如果第一信息指示了多个子帧，则用户设备在一次抢占信道不成功之后，还可以在第一信息所指示的其他子帧抢占信道，提高了用户设备发送HARQ应答信息的成功率。
结合第一方面的第二种可能的实现方式，在第一方面的第三种可能的实现方式中，若第一信息包含多个子帧的子帧号，则多个子帧为连续的子帧或不连续的子帧。
即，第一信息所指示的子帧可以是连续的子帧或不连续的子帧，只要均是上行子帧即可，本发明实施例对此不作限制。
结合第一方面或第一方面的第一种可能的实现方式至第三种可能的实现方式中的任一种可能的实现方式，在第一方面的第四种可能的实现方式中，第一信息承载在物理下行控制信道的下行控制信息中。
下行控制信息可以是用于调度下行数据的，第一信息可以直接承载在下行控制信息中，则网络设备无需额外专门发送第一信息，方式较为简单，也可以减少设备之间的交互过程。
结合第一方面或第一方面的第一种可能的实现方式至第四种可能的实现方式中的任一种可能的实现方式，在第一方面的第五种可能的实现方式中，在网络设备在第一信息所指示的子帧上接收用户设备发送的HARQ应答信息之后，若在第一信息所指示的子帧上接收HARQ应答信息失败，则网络设备接收用户设备发送的通知消息，该通知消息用于指示网络设备在其他的非授 权载波上接收HARQ应答信息或在授权载波上接收HARQ应答信息。
因为用户设备在第一信息所指示的子帧向网络设备发送HARQ应答信息时需要首先抢占信道，那么就可能存在抢占信道不成功的情况，如果用户设备在第一信息所指示的子帧上抢占信道均不成功，则用户设备可以跨载波到其他的非授权载波上或授权载波上向网络设备发送HARQ应答信息，以保证HARQ应答信息能够正常发送。因为网络设备需要在正确的位置接收该HARQ应答信息，因此用户设备如果需要跨载波到其他的非授权载波上或授权载波上向网络设备发送HARQ应答信息，则用户设备可以通过向网络设备发送通知消息来通知网络设备，从而可以使得网络设备能够正确接收该HARQ应答信息，避免网络设备接收失败。
结合第一方面或第一方面的第一种可能的实现方式至第四种可能的实现方式中的任一种可能的实现方式，在第一方面的第五种可能的实现方式中，在网络设备在第一信息所指示的子帧上接收用户设备发送的HARQ应答信息之后，若在第一信息所指示的子帧上接收HARQ应答信息失败，则网络设备向用户设备发送通知消息，该通知消息用于指示用户设备在其他的非授权载波上发送HARQ应答信息或在授权载波上发送HARQ应答信息。
如果用户设备在第一信息所指示的子帧上抢占信道均不成功，则用户设备无法向网络设备发送该HARQ应答信息，网络设备可以确定接收HARQ应答信息失败，在这种情况下，网络设备可以向用户设备发送通知消息，指示用户设备跨载波到其他的非授权载波上或授权载波上向网络设备发送该HARQ应答信息，保证HARQ应答信息的正常发送。另外，网络设备可能较为了解各个载波的情况，因此由网络设备来指示用户设备具体跨载波到哪个载波上继续发送，用户设备根据网络设备的指示进行发送，发送成功的几率会增加。
第二方面，提供一种HARQ应答信息传输方法，该方法包括：用户设备接收网络设备发送的第一信息，第一信息用于指示用户设备在非授权载波上向网络设备发送HARQ应答信息所采用的子帧信息。用户设备在第一信息所 指示的子帧上向网络设备发送HARQ应答信息。
因为网络设备知晓究竟哪个子帧是上行子帧，因此网络设备可以向用户设备发送第一信息，第一信息就指示用户设备可以通过哪个子帧向网络设备发送HARQ应答信息，那么用户设备接收第一信息后就可以根据第一信息来向网络设备发送HARQ应答信息，即进行HARQ反馈，提高了HARQ应答信息的发送成功率。
结合第二方面，在第二方面的第一种可能的实现方式中，第一信息用于指示单个子帧，其中，第一信息包含所指示的单个子帧的子帧号或者子帧号偏移量。子帧号偏移量用于指示单个子帧的子帧号相对于网络设备向用户设备发送下行数据的子帧的子帧号的偏移量，下行数据为HARQ应答信息对应的下行数据。
结合第二方面，在第二方面的第二种可能的实现方式中，第一信息用于指示子帧窗口，其中，第一信息包含位于网络设备所指示的子帧窗口中的多个子帧的子帧号、及子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至少一种。子帧跨度信息用于指示第一信息所指示的子帧的数量。
结合第二方面的第二种可能的实现方式，在第二方面的第三种可能的实现方式中，若第一信息包含多个子帧的子帧号，则多个子帧为连续的子帧或不连续的子帧。
结合第二方面或第二方面的第一种可能的实现方式至第三种可能的实现方式中的任一种可能的实现方式，在第二方面的第四种可能的实现方式中，第一信息承载在物理下行控制信道的下行控制信息中。
结合第二方面或第二方面的第一种可能的实现方式至第四种可能的实现方式中的任一种可能的实现方式，在第二方面的第五种可能的实现方式中，在用户设备接收网络设备发送的第一信息之后，用户设备在非授权载波上抢占信道。在这种情况下，用户设备在第一信息所指示的子帧向网络设备发送HARQ应答信息，可以通过以下方式实现：若用户设备在非授权载波上抢占 信道成功，则用户设备在第一信息所指示的子帧上向网络设备发送HARQ应答信息。
用户设备在第一信息所指示的子帧上向网络设备发送HARQ应答信息时需要先抢占信道，如果抢占信道成功，则用户设备可以在第一信息所指示的子帧上正常向网络设备发送HARQ应答信息，网络设备也可以根据第一信息正常接收该HARQ应答信息。
结合第二方面的第五种可能的实现方式，在第二方面的第六种可能的实现方式中，该方法还可以包括：若用户设备在非授权载波上抢占信道失败，则用户设备跨载波到其他的非授权载波上向网络设备发送HARQ应答信息；或，若用户设备在非授权载波上抢占信道失败，则用户设备跨载波到授权载波上向网络设备发送HARQ应答信息。
如果用户设备在第一信息所指示的子帧上抢占信道失败，那么为了保证能够向网络设备发送该HARQ应答信息，用户设备可以跨载波到其他的非授权载波上或授权载波上向网络设备发送该HARQ应答信息，方式较为灵活，也避免HARQ应答信息传输失败。
第三方面，提供一种网络设备，该网络设备可以包括发送器和接收器。其中，发送器用于向用户设备发送第一信息，第一信息用于指示用户设备在非授权载波上向网络设备发送HARQ应答信息所采用的子帧信息。接收器用于在第一信息所指示的子帧上接收用户设备发送的HARQ应答信息。
结合第三方面，在第三方面的第一种可能的实现方式中，第一信息用于指示单个子帧，其中，第一信息包含所指示的单个子帧的子帧号或者子帧号偏移量。子帧号偏移量用于指示单个子帧的子帧号相对于网络设备向用户设备发送下行数据的子帧的子帧号的偏移量，下行数据为HARQ应答信息对应的下行数据。
结合第三方面，在第三方面的第二种可能的实现方式中，第一信息用于指示子帧窗口，其中，第一信息包含位于网络设备所指示的子帧窗口中的多个子帧的子帧号、及子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、 及子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至少一种。子帧跨度信息用于指示第一信息所指示的子帧的数量。
结合第三方面的第二种可能的实现方式，在第三方面的第三种可能的实现方式中，若第一信息包含多个子帧的子帧号，则多个子帧为连续的子帧或不连续的子帧。
结合第三方面或第三方面的第一种可能的实现方式至第三种可能的实现方式中的任一种可能的实现方式，在第三方面的第四种可能的实现方式中，第一信息承载在物理下行控制信道的下行控制信息中。
结合第三方面或第三方面的第一种可能的实现方式至第四种可能的实现方式中的任一种可能的实现方式，在第三方面的第五种可能的实现方式中，接收器还用于：若在第一信息所指示的子帧上接收HARQ应答信息失败，则接收用户设备发送的通知消息。该通知消息用于指示网络设备在其他的非授权载波上接收HARQ应答信息或在授权载波上接收HARQ应答信息。
结合第三方面或第三方面的第一种可能的实现方式至第四种可能的实现方式中的任一种可能的实现方式，在第三方面的第六种可能的实现方式中，发送器还用于：若接收器在第一信息所指示的子帧上接收HARQ应答信息失败，则向用户设备发送通知消息。该通知消息用于指示用户设备在其他的非授权载波上发送HARQ应答信息或在授权载波上发送HARQ应答信息。
第四方面，提供一种用户设备，该用户设备可以包括接收器和发送器。其中，接收器用于接收网络设备发送的第一信息，第一信息用于指示用户设备在非授权载波上向网络设备发送HARQ应答信息所采用的子帧信息。发送器用于在第一信息所指示的子帧上向网络设备发送HARQ应答信息。
结合第四方面，在第四方面的第一种可能的实现方式中，第一信息用于指示单个子帧，其中，第一信息包含所指示的单个子帧的子帧号或者子帧号偏移量。子帧号偏移量用于指示单个子帧的子帧号相对于网络设备向用户设备发送下行数据的子帧的子帧号的偏移量，下行数据为HARQ应答信息对应的下行数据。
结合第四方面，在第四方面的第二种可能的实现方式中，第一信息用于指示子帧窗口，其中，第一信息包含位于网络设备所指示的子帧窗口中的多个子帧的子帧号、及子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至少一种。子帧跨度信息用于指示第一信息所指示的子帧的数量。
结合第四方面的第二种可能的实现方式，在第四方面的第三种可能的实现方式中，若第一信息包含多个子帧的子帧号，则多个子帧为连续的子帧或不连续的子帧。
结合第四方面或第四方面的第一种可能的实现方式至第三种可能的实现方式中的任一种可能的实现方式，在第四方面的第四种可能的实现方式中，第一信息承载在物理下行控制信道的下行控制信息中。
结合第四方面或第四方面的第一种可能的实现方式至第四种可能的实现方式中的任一种可能的实现方式，在第四方面的第五种可能的实现方式中，该用户设备还包括处理器。处理器用于：在非授权载波上抢占信道。发送器用于：若在非授权载波上抢占信道成功，则在第一信息所指示的子帧向网络设备发送HARQ应答信息。
结合第四方面的第五种可能的实现方式，在第四方面的第六种可能的实现方式中，发送器还用于：若用户设备在非授权载波上抢占信道失败，则跨载波到其他的非授权载波上向网络设备发送HARQ应答信息；或，若用户设备在非授权载波上抢占信道失败，则跨载波到授权载波上向网络设备发送HARQ应答信息。
第五方面，提供另一种网络设备，该网络设备可以包括用于执行第一方面或第一方面的任一种可能的实现方式的方法的功能单元。
第六方面，提供另一种用户设备，该用户设备可以包括用于执行第二方面或第二方面的任一种可能的实现方式的方法的功能单元。
第七方面，本发明实施例提供了一种计算机存储介质，用于储存为上述网络设备所用的计算机软件指令，其包含用于执行上述方面为网络设备所设 计的程序。
第八方面，本发明实施例提供了一种计算机存储介质，用于储存为上述用户设备所用的计算机软件指令，其包含用于执行上述方面为用户设备所设计的程序。
本发明实施例中，通过网络设备为用户设备指示发送HARQ应答信息的子帧，无需用户设备自行选择子帧，可以尽量避免由于用户设备选择的可能不是上行子帧而导致HARQ应答信息发送失败的情况，提高了HARQ应答信息的发送成功率。
本发明的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍。
图1为本发明实施例的应用场景示意图；
图2为本发明实施例提供的HARQ应答信息传输方法的一种流程图；
图3为本发明实施例提供的用户设备发送HARQ应答信息的一种示意图；
图4为本发明实施例提供的用户设备发送HARQ应答信息的一种示意图；
图5为本发明实施例提供的网络设备的一种结构示意图；
图6为本发明实施例提供的用户设备的一种结构示意图；
图7为本发明实施例提供的网络设备的一种结构示意图；
图8为本发明实施例提供的用户设备的一种结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，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，所描述的实施例是本发明一部分实施例，而不是全部的实施例。
以下，对本发明中的部分用语进行解释说明，以便于本领域技术人员理解。
1)用户设备，是指向用户提供语音和/或数据连通性的设备，例如可以包括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处理设备。该用户设备可以经无线接入网(Radio Access Network，RAN)与核心网进行通信，与RAN交换语音和/或数据。该用户设备可以包括UE、无线终端设备、移动终端设备、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，AP)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、或用户装备(User Device)等。例如，可以是移动电话(或称为“蜂窝”电话)，具有移动终端的计算机，便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。
2)网络设备，例如是基站(例如，接入点)，具体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，作为无线终端设备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，基站可以是长期演进(Long Term Evolution，LTE)或长期演进升级版(LTE-Advanced，LTE-A)等系统中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，本发明实施例并不限定。
3)LAA-LTE系统，在非授权载波中使用LTE技术，基于载波聚合的架构，将授权载波作为主小区(PCell)，将非授权载波作为辅小区(SCell)。同时，为了保证和其他在非授权载波工作的技术共存，LAA-LTE系统采用了先听后说(Listen-Before-Talk，LBT)的信道竞争接入机制，即，无论用户设备还是网络设备，在非授权载波上发送数据之前，都需先抢占信道，信道抢占成功才能发送数据。
4)物理下行控制信道，用于传输控制信息，例如为物理下行控制信道 (Physical Downlink Control Channel，PDCCH)，或者可能是其他的物理下行控制信道，或者PDCCH也可以有其他的名称，本发明实施例对此不作限制。
5)本发明实施例中的术语“系统”和“网络”可被互换使用。“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，字符“/”，如无特殊说明，一般表示前后关联对象是一种“或”的关系。
首先介绍一下本发明实施例的应用场景，请参见图1。图1中包括用户设备和网络设备，用户设备和网络设备可以相互通信。网络设备向用户设备发送下行数据后，用户设备根据对该下行数据的接收情况向网络设备回复HARQ应答信息，HARQ应答信息包括肯定应答(ACK)和NACK两种。如果用户设备对网络设备发送的下行数据接收成功，则用户设备可以向网络设备回复ACK，则网络设备可以继续传输新的数据，或者结束传输过程。而如果用户设备对网络设备发送的下行数据接收失败，则用户设备可以向网络设备回复NACK，则网络设备可以重传上次传输的数据，从而尽量提高数据传输的成功率。
然而在LAA-LTE系统中，由于没有固定的上下行配置，所以用户设备选择的向网络设备发送HARQ应答信息的子帧很可能不是上行子帧，而这可能导致HARQ应答信息传输失败。鉴于此，本发明实施例提供新的HARQ应答信息传输方法。需要知晓的是，本发明实施例所提供的方法不仅可以应用于LAA-LTE系统，还可以应用于其他的没有固定上下行配置的系统，也可以应用于有固定的上下行配置的系统，例如在FDD和TDD等系统中也可以应用本发明实施例所提供的技术方案，本发明实施例不作限制。
下面结合说明书附图介绍本发明实施例提供的技术方案。
请参见图2，本发明一实施例提供一种以图1所示的应用场景为例的HARQ应答信息传输方法，在本发明实施例中，以网络设备是基站为例。
S201：基站在子帧n向用户设备发送下行数据时，可以同时向用户设备发 送第一信息，第一信息用于指示用户设备在非授权载波上向基站发送HARQ应答信息所采用的子帧信息。用户设备接收基站发送的第一信息。
在一种实施方式中，第一信息可以通过物理下行控制信道进行发送。例如第一信息可以承载在物理下行控制信道的下行控制信息中(图2所示的实施例以此为例)，或者第一信息也可以单独发送，或者第一信息也可以承载在物理下行控制信道的其他信息中，本发明实施例对此不作限制。
其中，下行控制信息为基站发送给用户设备的调度信息，下行控制信息例如为下行控制信息(Downlink Control Information，DCI)，或者也可能是其他的信息。例如，基站在要向用户设备发送下行数据前，可以先向用户设备发送DCI，通过DCI为用户设备调度下行传输资源，从而用户设备可以根据DCI所指示的下行传输资源接收基站发送的下行数据。下行控制信息中可以携带上下行传输资源分配、HARQ信息、或功率控制等信息。
以基站向用户设备发送下行数据为例。目前，基站发给用户设备的DCI中一般都是包括为该下行数据所调度的下行传输资源，在有固定的上下行配置的系统中，用户设备究竟通过哪个子帧来反馈针对该下行数据的HARQ应答信息一般都是通过协议规定。然而对于没有固定的上下行配置的系统，例如LAA-LTE系统，则用户设备所选择的发送HARQ应答信息的子帧很可能不是上行子帧，这可能导致HARQ应答信息发送失败。因此本发明实施例中，基站可以向用户设备发送第一信息，第一信息可以指示用户设备究竟在哪个子帧发送HARQ应答信息，无需用户设备自行选择，且基站是知晓哪些子帧是上行子帧的，因此也可以尽量避免用户设备所选择的子帧不是上行子帧的情况，提高了HARQ应答信息的发送成功率。
在一种实施方式中，第一信息可以用于指示单个子帧，在这种情况下，第一信息可以包含第一信息所指示的单个子帧的子帧号或子帧号偏移量。其中，如果第一信息包含所指示的单个子帧的子帧号偏移量，该子帧号偏移量可以是第一信息所指示的子帧的子帧号相对于网络设备向用户设备发送下行数据的子帧的子帧号的偏移量，该下行数据为该HARQ应答信息对应的下行数 据，这里的对应是指，该HARQ应答信息就是反馈用户设备对该下行数据的接收情况。例如，基站发送DCI给用户设备，该DCI用于调度基站在子帧n发送给用户设备的下行数据，其中第一信息承载在DCI中，在DCI中新增了一个或多个比特(bit)，新增的比特作为第一信息，用于承载k或者n+k，用于指示用户设备在子帧n+k向基站发送针对该下行数据的HARQ应答信息。其中，n+k即为用户设备发送HARQ应答信息的子帧号。其中，若第一信息包括k，则用户设备可以自行计算n+k，k即可认为是子帧号偏移量，若第一信息直接包括n+k，则用户设备无需再做计算。
其中，若第一信息用于指示单个子帧，则基站所选择的该子帧，可以是与n的距离最近的上行子帧。例如基站在子帧n发送下行数据，子帧n、子帧n+1、子帧n+2、和子帧n+3均为下行子帧，子帧n+4、子帧n+5、子帧n+6、和子帧n+7为上行子帧，在这些上行子帧中，子帧n+4与子帧n的距离最近，也就是n+4和n之间的差值最小，因此基站可以令第一信息指示子帧n+4，这样可以尽量减小反馈HARQ应答信息的时延。当然第一信息所指示的子帧不限于此，基站也可能基于其他的因素选择合适的上行子帧作为第一信息所指示的子帧，例如，可能要求，反馈HARQ应答消息的子帧与基站发送下行数据的子帧间距大于等于4ms，因此所选择的上行子帧n+k中的k大于等于4。
作为第一信息指示单个子帧的替换方案，第一信息也可以用于指示多个子帧，这种情况也可以认为第一信息指示子帧窗口，在该子帧窗口中包括第一信息所指示的多个子帧。在本发明实施例中，第一信息可以包含位于该第一信息所指示的子帧窗口中的多个子帧的子帧号、及该子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及该子帧窗口中的起始子帧的子帧号和子帧跨度信息中的一种或多种。其中，子帧跨度信息用于指示第一信息所指示的子帧的数量，即根据该子帧窗口中的起始子帧的子帧号和子帧跨度信息可以得到该子帧窗口包括的第一信息所指示的子帧的子帧号。其中，若第一信息包含多个子帧的子帧号，则这多个子帧可以为连续的子帧或不连续的子帧。
其中，若第一信息用于指示子帧窗口，则基站所选择的子帧窗口中的起 始子帧，可以是与n的距离最近的上行子帧。例如基站在子帧n发送下行数据，子帧n、子帧n+1、子帧n+2、和子帧n+3均为下行子帧，子帧n+4、子帧n+5、子帧n+6、和子帧n+7为上行子帧，在这些上行子帧中，子帧n+4与子帧n的距离最近，也就是n+4和n之间的差值最小，因此基站可以令第一信息所指示的子帧窗口的起始子帧为子帧n+4。另外，第一信息所指示的子帧窗口中，子帧的跨度过大的话可能会导致时效性不够好，所以第一信息所指示的子帧窗口的跨度可以选择在合适范围内，例如小于等于10，或小于等于8，这样可以尽量减小反馈HARQ应答信息的时延。当然第一信息所指示的子帧不限于此，基站也可能基于其他的因素选择合适的上行子帧作为第一信息所指示的子帧。
例如，基站发送DCI给用户设备，该DCI用于调度基站在子帧n发送给用户设备的下行数据，其中第一信息承载在DCI中，在DCI中新增了一个或多个比特(bit)，新增的比特用于承载指示子帧窗口的第一信息，用于指示用户设备在该子帧窗口所包括的上行子帧向基站发送针对该下行数据的HARQ应答信息。
例如，第一信息指示的子帧窗口为起始子帧为子帧n+4、结束子帧为子帧n+7的子帧窗口，在该子帧窗口中包括4个上行子帧，分别为子帧n+4、子帧n+5、子帧n+6、和子帧n+7。则第一信息可以包括这四个子帧的子帧号，分别为n+4、n+5、n+6、和n+7；或者第一信息可以包括该子帧窗口的起始子帧的子帧号和结束子帧的子帧号，分别为n+4和n+7，则用户设备可以据此获知第一信息所指示的子帧分别为子帧n+4、子帧n+5、子帧n+6、和子帧n+7；或者第一信息可以包括该子帧窗口的起始子帧的子帧号和子帧跨度信息，分别为n+4和3，则用户设备可以据此获知第一信息所指示的子帧分别为子帧n+4、子帧n+5、子帧n+6、和子帧n+7。当然这里的数值只是为了解释本发明实施例的方案而给出的示例，在实际应用中不限于此。
另外，如上的例子介绍的是第一信息所指示的子帧的子帧号是连续的情况，在实际应用中，第一信息所指示的子帧号也可以不连续。例如子帧n+4、子帧n+5、子帧n+6、和子帧n+7都是上行子帧，则第一信息可以用于指示其中 的部分上行子帧，如指示子帧n+4、子帧n+6、和子帧n+7，而不指示子帧n+5，或者指示子帧n+4和子帧n+7，而不指示子帧n+5和子帧n+6，在这种情况下，第一子帧所指示的子帧号就是不连续的。
S202、基站向用户设备发送下行数据，则用户设备接收该下行数据。
本发明实施例是以第一信息承载在DCI中为例，该DCI用于调度下行传输资源，因此基站在向用户设备发送DCI后，要向用户设备发送该DCI所调度的下行数据。
S203、用户设备向基站发送针对该下行数据的HARQ应答信息，则基站接收该HARQ应答信息。其中，如果用户设备确定该下行数据接收成功，则用户设备发送的HARQ应答信息为ACK，如果用户设备确定该下行数据接收失败，则用户设备发送的HARQ应答信息为NACK。
用户设备根据对下行数据的接收情况确定向基站发送的HARQ应答信息是ACK还是NACK，再根据第一信息所指示的子帧，在非授权载波上向基站发送该HARQ应答信息。
在一种实施方式中，若第一信息指示的是单个子帧的子帧号，则用户设备直接根据第一信息所指示的子帧号向基站发送HARQ应答信息。
举例来说，请参见图3，基站通过子帧n的PDCCH向用户设备发送DCI，DCI中包含第一信息，该第一信息指示用户设备在非授权载波上的子帧n+5向基站发送针对该下行数据的HARQ应答信息，即k＝5。用户设备接收该DCI后，根据DCI中的指示，在子帧n+5通过LBT机制在非授权载波上抢占信道，如果信道抢占成功，则用户设备在子帧n+5向基站发送针对该下行数据的HARQ应答信息。图3中，例如子帧n、子帧n+1、子帧n+2、和子帧n+3为下行子帧，子帧n+4、子帧n+5、子帧n+6、和子帧n+7为上行子帧。
然而，因为用户设备在非授权载波上发送数据时需要先抢占信道，那么就可能存在信道抢占不成功的情况，继续以图3所示的实施例为例，如果用户设备在非授权载波的子帧n+5上抢占信道不成功，则用户设备显然无法通过基站所指示的子帧来向基站发送HARQ应答信息。在这种情况下，为了保 证能够将HARQ应答信息发送给基站，用户设备可以将相应的HARQ应答信息从该非授权载波跨载波到其他的非授权载波上进行发送，当然这样做的前提是多载波的情况，自然在每个非授权载波上发送都需要抢占信道，如果在其中一个非授权载波上抢占信道成功，则通过该非授权载波将该HARQ应答信息发送给基站。这里还可能存在一种情况，即用户设备在该用户设备所有的非授权载波上抢占信道都不成功，那么用户设备也可以跨载波到授权载波上向基站发送该HARQ应答信息。或者，如果用户设备在子帧n+5在非授权载波上抢占信道不成功，即在第一信息所指示的非授权载波上抢占信道不成功，则用户设备可以直接从该非授权载波跨载波到授权载波上进行发送，在授权载波上无需抢占信道，可以直接发送，效率较高，且也提高了发送成功率。
其中，用户设备如果在第一信息所指示的子帧上发送HARQ应答信息失败，则在用户设备跨载波到非授权载波或授权载波上向网络设备发送该HARQ应答信息时，用户设备都可以先向网络设备发送通知消息，该通知消息用于指示用户设备跨载波到非授权载波上向网络设备发送该HARQ应答信息，或用于指示用户设备跨载波到非授权载波上向网络设备发送该HARQ应答信息，以便网络设备可以在正确的位置监听并接收该HARQ应答信息。其中，如果用户设备进行了多次跨载波的过程，例如在多个非授权载波上分别尝试了抢占信道并发送后才发送成功，则用户设备在每次进行跨载波时都需向网络设备发送通知消息。
或者，作为用户设备向网络设备发送通知消息的替换方案，网络设备作为接收方，如果在第一信息所指示的子帧未接收到用户设备发送的HARQ应答信息，则网络设备确定用户设备发送失败，则网络设备可以向用户设备发送通知消息，该通知消息用于指示用户设备跨载波到非授权载波上向网络设备发送该HARQ应答信息，在这种情况下，该通知消息可以指示具体的非授权载波，或该通知消息用于指示用户设备跨载波到授权载波上向网络设备发送该HARQ应答信息，这样用户设备可以根据网络设备的指示进行跨载波发 送，网络设备也可以正确接收。如果网络设备向用户设备发送了一次通知消息，该通知消息用于指示用户设备在非授权载波上向网络设备发送该HARQ应答信息，而网络设备依然未在指示的非授权载波上接收到该HARQ应答信息，则网络设备确定用户设备依然发送设备，则网络设备可以继续向用户设备发送通知消息，以指示用户设备再次跨载波到其他非授权载波上或授权载波上发送该HARQ应答信息。
在另一种实施方式中，若第一信息用于指示子帧窗口，则用户设备可以在第一信息所指示的子帧窗口内的任意一个子帧向基站发送HARQ应答信息。
举例来说，请参见图4，基站通过子帧n的PDCCH向用户设备发送DCI，DCI中包含第一信息，所述第一信息指示用户设备在非授权载波上的子帧n+5、子帧n+6、或子帧n+7向基站发送针对该下行数据的HARQ应答信息。用户设备接收该DCI后，根据DCI中的指示，可以先在子帧n+5通过LBT机制在非授权载波上抢占信道，如果信道抢占成功，则在该非授权载波上的子帧n+5向基站发送针对该下行数据的HARQ应答信息，无需考虑再在子帧n+6和子帧n+7向基站发送针对该下行数据的HARQ应答信息。而如果用户设备在子帧n+5在该非授权载波上抢占信道失败，则用户设备可以在子帧n+6通过LBT机制在非授权载波上抢占信道，如果信道抢占成功，则在该非授权载波上在子帧n+6向基站发送针对该下行数据的HARQ应答信息，无需考虑再在子帧n+7向基站发送针对该下行数据的HARQ应答信息。如果用户设备在子帧n+6在该非授权载波上也抢占信道失败，则用户设备可以在子帧n+7通过LBT机制在非授权载波上抢占信道，以此类推。图4中，例如子帧n、子帧n+1、子帧n+2、和子帧n+3为下行子帧，子帧n+4、子帧n+5、子帧n+6、和子帧n+7为上行子帧。
可以看到，由于需要抢占信道，那么用户设备很可能在子帧n+5、子帧n+6、和子帧n+7都抢占不到信道，则用户设备无法通过基站所指示的子帧来向基站发送HARQ应答信息。在这种情况下，为了保证能够将HARQ应答信息发送给基站，如果是多载波的情况，用户设备可以将相应的HARQ应答信 息从该非授权载波跨载波到其他的非授权载波上进行发送，如果用户设备在该用户设备所有的非授权载波上抢占信道都不成功，那么用户设备也可以跨载波到授权载波上向基站发送该HARQ应答信息。或者，如果用户设备在第一信息所指示的所有子帧在非授权载波上抢占信道都不成功，则用户设备可以直接从该非授权载波跨载波到授权载波上进行发送，在授权载波上无需抢占信道，可以直接发送，效率较高，且也提高了发送成功率。
同样的，用户设备如果在第一信息所指示的子帧上发送HARQ应答信息失败，则在用户设备跨载波到非授权载波或授权载波上向网络设备发送该HARQ应答信息时，用户设备也可以先向网络设备发送通知消息，该通知消息用于指示用户设备跨载波到非授权载波上向网络设备发送该HARQ应答信息，或用于指示用户设备跨载波到非授权载波上向网络设备发送该HARQ应答信息，以便网络设备可以在正确的位置监听并接收该HARQ应答信息。
或者，作为用户设备向网络设备发送通知消息的替换方案，网络设备作为接收方，如果在第一信息所指示的子帧未接收到用户设备发送的HARQ应答信息，则网络设备确定用户设备发送失败，则网络设备可以向用户设备发送通知消息，该通知消息用于指示用户设备跨载波到非授权载波上向网络设备发送该HARQ应答信息，在这种情况下，该通知消息可以指示具体的非授权载波，或该通知消息用于指示用户设备跨载波到授权载波上向网络设备发送该HARQ应答信息，这样用户设备可以根据网络设备的指示进行跨载波发送，网络设备也可以正确接收。关于用户设备向网络设备发送通知消息或网络设备向用户设备发送通知消息的描述可参考关于第一信息指示的是单个子帧的子帧号的部分的相关描述，不多赘述。
对于用户设备来说，授权载波需要传输的信息比较多，所以授权载波上的资源比较宝贵，所以本发明实施例中尽量将HARQ应答信息放在非授权载波上发送。当然，如果在非授权载波上发送不成功，也可以转到授权载波上发送，以尽量保证HARQ应答信息的发送成功率。
下面结合附图介绍本发明实施例提供的设备。
请参见图5，本发明一实施例提供第一种网络设备，该网络设备可以包括处理器501、发送器502、和接收器503。
其中，处理器501可以包括中央处理器(CPU)或特定应用集成电路(Application Specific Integrated Circuit，ASIC)，可以包括一个或多个用于控制程序执行的集成电路，可以包括使用现场可编程门阵列(Field Programmable Gate Array，FPGA)开发的硬件电路，可以包括基带芯片。
发送器502可以用于与外部设备进行网络通信，例如可以通过以太网、无线接入网、无线局域网、或有线网等网络与外部设备进行通信。
接收器503可以用于与外部设备进行网络通信，例如可以通过以太网、无线接入网、无线局域网、或有线网等网络与外部设备进行通信。
可选的，接收器503和发送器502可以是一个功能模块，比如一个功能模块可以既实现发送功能又实现接收功能，或者可以是一个功能模块中的不同的子模块，或者接收器503和发送器502也可以是两个彼此独立的功能模块。
可选的，该网络设备还可以包括存储器504。存储器504的数量可以是一个或多个。存储器504可以包括只读存储器(Read Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)和磁盘存储器，等等。存储器504可以用于存储处理器501执行任务所需的程序代码，还可以用于存储数据等。其中，因存储器504是可选的功能模块而不是必选的功能模块，因此在图5中将其以虚线形式示出。
存储器504、接收器503和发送器502可以通过总线500与处理器501相连接(图5以此为例)，或者也可以通过专门的连接线与处理器501连接。
通过对处理器501进行设计编程，将前述所示的方法所对应的代码固化到芯片内，从而使芯片在运行时能够执行前述实施例中的所示的方法。如何对处理器501进行设计编程为本领域技术人员所公知的技术，这里不再赘述。
该网络设备可以用于执行上述图2所示的实施例提供的方法，例如可以是如前所述的网络设备。因此，对于该网络设备中的各单元所实现的功能等， 可参考如前方法部分的描述，不多赘述。
请参见图6，本发明一实施例提供第一种用户设备，该用户设备可以包括处理器601、发送器602、和接收器603。
其中，处理器601可以包括CPU或ASIC，可以包括一个或多个用于控制程序执行的集成电路，可以包括使用FPGA开发的硬件电路，可以包括基带芯片。
发送器602可以用于与外部设备进行网络通信，例如可以通过以太网、无线接入网、无线局域网、或有线网等网络与外部设备进行通信。
接收器603可以用于与外部设备进行网络通信，例如可以通过以太网、无线接入网、无线局域网、或有线网等网络与外部设备进行通信。
可选的，接收器603和发送器602可以是一个功能模块，比如一个功能模块可以既实现发送功能又实现接收功能，或者可以是一个功能模块中的不同的子模块，或者接收器603和发送器602也可以是两个彼此独立的功能模块。
可选的，该用户设备还可以包括存储器604。存储器604的数量可以是一个或多个。存储器604可以包括ROM、RAM和磁盘存储器，等等。存储器604可以用于存储处理器601执行任务所需的程序代码，还可以用于存储数据等。其中，因存储器604是可选的功能模块而不是必选的功能模块，因此在图6中将其以虚线形式示出。
存储器604、接收器603和发送器602可以通过总线600与处理器601相连接(图6以此为例)，或者也可以通过专门的连接线与处理器601连接。
通过对处理器601进行设计编程，将前述所示的方法所对应的代码固化到芯片内，从而使芯片在运行时能够执行前述实施例中的所示的方法。如何对处理器601进行设计编程为本领域技术人员所公知的技术，这里不再赘述。
该用户设备可以用于执行上述图2所示的实施例提供的方法，例如可以是如前所述的用户设备。因此，对于该用户设备中的各单元所实现的功能等，可参考如前方法部分的描述，不多赘述。
请参见图7，本发明一实施例提供第二种网络设备，该网络设备可以包括发送单元701和接收单元702。
可选的，该网络设备还可以包括处理单元703，在图7中一并示出。因为处理单元703为可选的功能模块，因此在图7中画为虚线形式。
在实际应用中，发送单元701对应的实体设备可以是图5所示的实施例中的发送器502，接收单元702对应的实体设备可以是图5所示的实施例中的接收器503，处理单元703对应的实体设备可以是图5所示的实施例中的处理器501。
该网络设备可以用于执行上述图2所示的实施例提供的方法，例如可以是如前所述的网络设备。因此，对于该网络设备中的各单元所实现的功能等，可参考如前方法部分的描述，不多赘述。
请参见图8，本发明一实施例提供第二种用户设备，该用户设备可以包括发送单元801和接收单元802。
可选的，该网络设备还可以包括处理单元803，在图8中一并示出。因为处理单元803为可选的功能模块，因此在图8中画为虚线形式。
在实际应用中，发送单元801对应的实体设备可以是图6所示的实施例中的发送器602，接收单元802对应的实体设备可以是图6所示的实施例中的接收器603，处理单元803对应的实体设备可以是图6所示的实施例中的处理器601。
该用户设备可以用于执行上述图2所示的实施例提供的方法，例如可以是如前所述的用户设备。因此，对于该用户设备中的各单元所实现的功能等，可参考如前方法部分的描述，不多赘述。
本发明实施例中，因为网络设备知晓究竟哪个子帧是上行子帧，因此网络设备可以向用户设备发送第一信息，第一信息就指示用户设备可以通过哪个子帧向网络设备发送HARQ应答信息，那么用户设备接收第一信息后就可以根据第一信息来向网络设备发送HARQ应答信息，即进行HARQ反馈，即，本发明实施例提供了一种HARQ反馈方式，通过这种方式可以较好地进行HARQ反馈，且网络设备所指示的子帧是上行子帧，也避免因为用户设备自己选择子帧而可能导致的选择失败的情况。
在本发明中，应该理解到，所揭露的设备和方法，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，所述单元或单元的划分，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发明实施例。
在本发明实施例中的各功能单元可以集成在一个处理单元中，或者各个单元也可以均是独立的物理模块。
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，例如可以是个人计算机，服务器，或者网络设备等，或处理器(processor)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：通用串行总线闪存盘(Universal Serial Bus flash drive)、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以对本发明的技术方案进行了详细介绍，但以上实施例的说明只是用于帮助理解本发明实施例的方法，不应理解为对本发明实施例的限制。本技术领域的技术人员可轻易想到的变化或替换，都应涵盖在本发明实施例的保护范围之内。

Claims (26)

  1. 一种混合自动重传请求HARQ应答信息传输方法，其特征在于，包括：
    网络设备向用户设备发送第一信息；所述第一信息用于指示所述用户设备在非授权载波上向所述网络设备发送HARQ应答信息所采用的子帧信息；
    所述网络设备在所述第一信息所指示的子帧上接收所述用户设备发送的所述HARQ应答信息。
  2. 如权利要求1所述的方法，其特征在于，所述第一信息用于指示单个子帧，其中所述第一信息包含所指示的所述单个子帧的子帧号或者子帧号偏移量；所述子帧号偏移量用于指示所述单个子帧的子帧号相对于所述网络设备向所述用户设备发送下行数据的子帧的子帧号的偏移量，所述下行数据为所述HARQ应答信息对应的下行数据。
  3. 如权利要求1所述的方法，其特征在于，所述第一信息用于指示子帧窗口；其中所述第一信息包含位于所述网络设备所指示的所述子帧窗口中的多个子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至少一种；所述子帧跨度信息用于指示所述第一信息所指示的子帧的数量。
  4. 如权利要求3所述的方法，其特征在于，若所述第一信息包含所述多个子帧的子帧号，则所述多个子帧为连续的子帧或不连续的子帧。
  5. 如权利要求1-4中任意一项所述的方法，其特征在于，所述第一信息承载在物理下行控制信道的下行控制信息中。
  6. 如权利要求1-5中任意一项所述的方法，其特征在于，在所述网络设备在所述第一信息所指示的子帧上接收所述用户设备发送的所述HARQ应答信息之后，还包括：
    若在所述第一信息所指示的子帧上接收所述HARQ应答信息失败，则所述网络设备接收所述用户设备发送的通知消息；所述通知消息用于指示所述网络设备在其他的非授权载波上接收所述HARQ应答信息或在授权载波上接 收所述HARQ应答信息；或
    若在所述第一信息所指示的子帧上接收所述HARQ应答信息失败，则所述网络设备向所述用户设备发送通知消息；所述通知消息用于指示所述用户设备在其他的非授权载波上发送所述HARQ应答信息或在授权载波上发送所述HARQ应答信息。
  7. 一种混合自动重传请求HARQ应答信息传输方法，其特征在于，包括：
    用户设备接收网络设备发送的第一信息；所述第一信息用于指示所述用户设备在非授权载波上向所述网络设备发送HARQ应答信息所采用的子帧信息；
    所述用户设备在所述第一信息所指示的子帧上向所述网络设备发送所述HARQ应答信息。
  8. 如权利要求7所述的方法，其特征在于，所述第一信息用于指示单个子帧，其中所述第一信息包含所指示的所述单个子帧的子帧号或者子帧号偏移量；所述子帧号偏移量用于指示所述单个子帧的子帧号相对于所述网络设备向所述用户设备发送下行数据的子帧的子帧号的偏移量，所述下行数据为所述HARQ应答信息对应的下行数据。
  9. 如权利要求7所述的方法，其特征在于，所述第一信息用于指示子帧窗口；其中所述第一信息包含位于所述网络设备所指示的所述子帧窗口中的多个子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至少一种；所述子帧跨度信息用于指示所述第一信息所指示的子帧的数量。
  10. 如权利要求9所述的方法，其特征在于，若所述第一信息包含所述多个子帧的子帧号，则所述多个子帧为连续的子帧或不连续的子帧。
  11. 如权利要求7-10中任意一项所述的方法，其特征在于，所述第一信息承载在物理下行控制信道的下行控制信息中。
  12. 如权利要求7-11中任意一项所述的方法，其特征在于，
    在所述用户设备接收网络设备发送的第一信息之后，还包括：
    所述用户设备在所述非授权载波上抢占信道；
    所述用户设备在所述第一信息所指示的子帧向所述网络设备发送所述HARQ应答信息，包括：
    若所述用户设备在所述非授权载波上抢占信道成功，则所述用户设备在所述第一信息所指示的子帧上向所述网络设备发送所述HARQ应答信息。
  13. 如权利要求12所述的方法，其特征在于，所述方法还包括：
    若所述用户设备在所述非授权载波上抢占信道失败，则所述用户设备跨载波到其他的非授权载波上向所述网络设备发送所述HARQ应答信息；或
    若所述用户设备在所述非授权载波上抢占信道失败，则所述用户设备跨载波到授权载波上向所述网络设备发送所述HARQ应答信息。
  14. 一种网络设备，其特征在于，包括：
    发送单元，用于向用户设备发送第一信息；所述第一信息用于指示所述用户设备在非授权载波上向所述网络设备发送混合自动重传请求HARQ应答信息所采用的子帧信息；
    接收单元，用于在所述第一信息所指示的子帧上接收所述用户设备发送的所述HARQ应答信息。
  15. 如权利要求14所述的网络设备，其特征在于，所述第一信息用于指示单个子帧，其中所述第一信息包含所指示的所述单个子帧的子帧号或者子帧号偏移量；所述子帧号偏移量用于指示所述单个子帧的子帧号相对于所述网络设备向所述用户设备发送下行数据的子帧的子帧号的偏移量，所述下行数据为所述HARQ应答信息对应的下行数据。
  16. 如权利要求14所述的网络设备，其特征在于，所述第一信息用于指示子帧窗口；其中所述第一信息包含位于所述网络设备所指示的所述子帧窗口中的多个子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至少一种；所述子帧跨度信息用于指示所述第一信息所指示的子帧的数量。
  17. 如权利要求16所述的网络设备，其特征在于，若所述第一信息包含 所述多个子帧的子帧号，则所述多个子帧为连续的子帧或不连续的子帧。
  18. 如权利要求14-17中任意一项所述的网络设备，其特征在于，所述第一信息承载在物理下行控制信道的下行控制信息中。
  19. 如权利要求14-18中任意一项所述的网络设备，其特征在于，
    所述接收单元还用于：若在所述第一信息所指示的子帧上接收所述HARQ应答信息失败，则接收所述用户设备发送的通知消息；所述通知消息用于指示所述网络设备在其他的非授权载波上接收所述HARQ应答信息或在授权载波上接收所述HARQ应答信息；或
    所述发送单元还用于：若所述接收单元在所述第一信息所指示的子帧上接收所述HARQ应答信息失败，则向所述用户设备发送通知消息；所述通知消息用于指示所述用户设备在其他的非授权载波上发送所述HARQ应答信息或在授权载波上发送所述HARQ应答信息。
  20. 一种用户设备，其特征在于，包括：
    接收单元，用于接收网络设备发送的第一信息；所述第一信息用于指示所述用户设备在非授权载波上向所述网络设备发送混合自动重传请HARQ应答信息所采用的子帧信息；
    发送单元，用于在所述第一信息所指示的子帧上向所述网络设备发送所述HARQ应答信息。
  21. 如权利要求20所述的用户设备，其特征在于，所述第一信息用于指示单个子帧，其中所述第一信息包含所指示的所述单个子帧的子帧号或者子帧号偏移量；所述子帧号偏移量用于指示所述单个子帧的子帧号相对于所述网络设备向所述用户设备发送下行数据的子帧的子帧号的偏移量，所述下行数据为所述HARQ应答信息对应的下行数据。
  22. 如权利要求20所述的用户设备，其特征在于，所述第一信息用于指示子帧窗口；其中所述第一信息包含位于所述网络设备所指示的所述子帧窗口中的多个子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和结束子帧的子帧号、及所述子帧窗口中的起始子帧的子帧号和子帧跨度信息中的至 少一种；所述子帧跨度信息用于指示所述第一信息所指示的子帧的数量。
  23. 如权利要求22所述的用户设备，其特征在于，若所述第一信息包含所述多个子帧的子帧号，则所述多个子帧为连续的子帧或不连续的子帧。
  24. 如权利要求20-23中任意一项所述的用户设备，其特征在于，所述第一信息承载在物理下行控制信道的下行控制信息中。
  25. 如权利要求20-24中任意一项所述的用户设备，其特征在于，所述用户设备还包括处理单元；
    所述处理单元用于：在所述非授权载波上抢占信道；
    所述发送单元用于：若在所述非授权载波上抢占信道成功，则在所述第一信息所指示的子帧向所述网络设备发送所述HARQ应答信息。
  26. 如权利要求25所述的用户设备，其特征在于，所述发送单元还用于：
    若所述用户设备在所述非授权载波上抢占信道失败，则跨载波到其他的非授权载波上向所述网络设备发送所述HARQ应答信息；或
    若所述用户设备在所述非授权载波上抢占信道失败，则跨载波到授权载波上向所述网络设备发送所述HARQ应答信息。
PCT/CN2016/093120 2016-08-03 2016-08-03 一种harq应答信息传输方法及设备 WO2018023501A1 (zh)

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US16/323,098 US20190181989A1 (en) 2016-08-03 2016-08-03 Method for Transmitting HARQ Acknowledgement Information and Device
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PCT/CN2016/093120 WO2018023501A1 (zh) 2016-08-03 2016-08-03 一种harq应答信息传输方法及设备
EP16911098.8A EP3487100B1 (en) 2016-08-03 2016-08-03 Harq response information transmission method

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