WO2017113339A1 - 下行反馈信息的传输方法、基站以及终端设备 - Google Patents

下行反馈信息的传输方法、基站以及终端设备 Download PDF

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Publication number
WO2017113339A1
WO2017113339A1 PCT/CN2015/100212 CN2015100212W WO2017113339A1 WO 2017113339 A1 WO2017113339 A1 WO 2017113339A1 CN 2015100212 W CN2015100212 W CN 2015100212W WO 2017113339 A1 WO2017113339 A1 WO 2017113339A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
base station
downlink
feedback information
information
Prior art date
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PCT/CN2015/100212
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English (en)
French (fr)
Inventor
汲桐
吴毅凌
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
Priority to PCT/CN2015/100212 priority Critical patent/WO2017113339A1/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21202890.6A priority patent/EP4033842A1/en
Priority to JP2018534530A priority patent/JP7149849B2/ja
Priority to CN202010062114.4A priority patent/CN111277390B/zh
Priority to EP15911965.0A priority patent/EP3393185B1/en
Priority to CN201580046146.2A priority patent/CN107852701B/zh
Priority to KR1020207037371A priority patent/KR102410901B1/ko
Priority to CN201810212069.9A priority patent/CN108521320B/zh
Priority to KR1020187022113A priority patent/KR102197441B1/ko
Priority to BR112018013480-5A priority patent/BR112018013480B1/pt
Publication of WO2017113339A1 publication Critical patent/WO2017113339A1/zh
Priority to US16/022,731 priority patent/US10681686B2/en
Priority to US16/886,793 priority patent/US11553472B2/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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H04L1/0004—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/001—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to control information
    • 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
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1893—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for transmitting downlink feedback information, a base station, and a terminal device.
  • M2M communication applications have different business requirements than traditional communication services, such as deep coverage and low power consumption.
  • the following requirements are proposed for the service requirements of the M2M communication application: after the terminal device receives the downlink data sent by the base station on the physical downlink shared channel (English name: Physical Downlink Shared Channel, English abbreviation: PDSCH), the downlink data needs to be received. Feedback is provided. If the reception is successful, the feedback is confirmed (English full name: Acknowledgement, English abbreviation: ACK), otherwise the feedback is negatively confirmed (English full name: Negative Acknowledgement, English abbreviation: NACK).
  • the data transmission process can be as shown in Figure 1. .
  • the current time-frequency resource location of the downlink feedback information is mapped by the time-frequency resource location of the physical downlink control channel (English name: Physical Downlink Control Channel, English abbreviation: PDCCH), so that the downlink feedback is performed.
  • the time-frequency resource location of the information is determined, and the downlink data sent on the PDSCH is fed back at the time-frequency resource location of the downlink feedback information.
  • the time-frequency resource location of the downlink feedback information is mapped by the time-frequency resource location of the PDCCH, and multiple downlink data may be fed back at the time-frequency resource location of the same downlink feedback information, causing resources.
  • the conflict is such that the base station cannot correctly receive the downlink feedback information sent by the terminal device, and the transmission success rate of the downlink feedback information is not high.
  • the embodiment of the present invention provides a method for transmitting downlink feedback information, a base station, and a terminal device, which can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • the first aspect of the present invention provides a method for transmitting downlink feedback information, including:
  • the base station sends the indication information to the terminal device, where the indication information is used to indicate a target time-frequency resource location, where the target time-frequency resource location is a time-frequency resource location where the terminal device sends downlink feedback information, where The downlink feedback information is used to feed back the receiving status of the downlink data received by the terminal device;
  • the base station receives the downlink feedback information sent by the terminal device.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the indication information by the base station, and the base station can ensure that the time-frequency resource locations of the downlink feedback information of different downlink data are different by using the indication information, thereby The problem of the resource conflict in the prior art is avoided. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • a first embodiment of the first aspect of the invention comprises:
  • the method further includes:
  • the base station sends downlink data to the terminal device according to the downlink scheduling information.
  • indication information and the downlink scheduling information are sent in the same message, and may be sent in the same message or in separate lines.
  • a second embodiment of the first aspect of the invention comprises:
  • the sending, by the base station, the indication information to the terminal device including:
  • the base station sends indication information to the terminal device on the physical downlink control channel PDCCH;
  • the PDCCH includes multiple scheduling units, and the indication information separately occupies one scheduling unit in the PDCCH.
  • the scheduling unit includes time-frequency resource location information of downlink feedback information.
  • the third embodiment of the first aspect of the invention comprises:
  • the base station sends indication information to the terminal device on the physical downlink control channel PDCCH;
  • the PDCCH includes multiple scheduling units, and the indication information shares one scheduling unit with the downlink scheduling information.
  • a fourth embodiment of the first aspect of the invention comprises:
  • the base station sends the indication information to the terminal device, which previously includes:
  • the base station sends downlink scheduling information to the terminal device
  • the base station sends downlink data to the terminal device according to the downlink scheduling information.
  • a first embodiment of the first aspect of the invention, a second embodiment of the first aspect of the invention, a third embodiment of the first aspect of the invention, and a fourth embodiment of the first aspect of the invention includes:
  • the downlink feedback information respectively identifies an acknowledgment ACK and a negative acknowledgment NACK through different sequences, and the sequence characterization of the ACK and the sequence of the NACK satisfy cross-correlation and/or orthogonality.
  • a first embodiment of the first aspect of the invention, a second embodiment of the first aspect of the invention, a third embodiment of the first aspect of the invention, and a fourth embodiment of the first aspect of the invention According to a fifth embodiment of the first aspect of the present invention, the sixth embodiment of the first aspect of the present invention comprises:
  • the indication information is further used to indicate a data format used by the terminal device to send the downlink feedback information
  • the base station receives the downlink feedback information that is sent by the terminal device according to the data format indicated by the indication information.
  • the second aspect of the present invention provides a method for transmitting downlink feedback information, including:
  • the terminal device receives the indication information sent by the base station
  • the terminal device sends downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, where the downlink feedback information is used to feed back the terminal device to receive The reception of downlink data.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the indication information by the base station, and the base station can ensure that the time-frequency resource locations of the downlink feedback information of different downlink data are different by using the indication information, thereby The problem of the resource conflict in the prior art is avoided. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • the first embodiment of the second aspect of the invention comprises:
  • the terminal device receives downlink scheduling information sent by the base station
  • the terminal device After receiving the indication information sent by the base station, the terminal device further includes:
  • the terminal device receives downlink data sent by the base station, where the downlink data is downlink data that is sent by the base station to the terminal device according to the downlink scheduling information.
  • a second embodiment of the second aspect of the invention comprises:
  • the method further includes:
  • the terminal device receives downlink scheduling information sent by the base station
  • the terminal device receives downlink data sent by the base station, where the downlink data is downlink data that is sent by the base station to the terminal device according to the downlink scheduling information.
  • the first embodiment of the second aspect of the present invention, and the second embodiment of the second aspect of the present invention, the third embodiment of the second aspect of the present invention includes:
  • the terminal device sends downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, including:
  • the terminal device sends downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, where the downlink feedback information is a sequence;
  • the downlink feedback information respectively identifies the acknowledgement ACK and the negative row determination NACK by different sequences, and the sequence characterizing the ACK and the sequence of the NACK satisfy cross-correlation and/or orthogonality.
  • the first embodiment of the second aspect of the present invention, the second embodiment of the second aspect of the present invention, the third embodiment of the second aspect of the present invention, and the fourth embodiment of the second aspect of the present invention include:
  • the indication information is further used to indicate a data format used by the terminal device to send the downlink feedback information
  • the terminal device sends downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, including:
  • the terminal device sends downlink feedback information to the base station according to the data format indicated by the indication information, according to the target time-frequency resource location indicated by the indication information, at the target time-frequency resource location.
  • the third aspect of the present invention provides a base station, including:
  • a sending unit configured to send, to the terminal device, the indication information, where the indication information is used to indicate a target time-frequency resource location, where the target time-frequency resource location is a time-frequency resource location where the terminal device sends downlink feedback information, where The downlink feedback information is used to feed back the receiving status of the downlink data received by the terminal device;
  • the receiving unit is configured to receive the downlink feedback information sent by the terminal device.
  • the first embodiment of the third aspect of the invention comprises:
  • the sending unit is further configured to send downlink scheduling information to the terminal device;
  • the sending unit After the sending unit sends the indication information to the terminal device, the sending unit is further configured to send downlink data to the terminal device according to the downlink scheduling information.
  • the second embodiment of the third aspect of the invention comprises:
  • the sending unit is specifically configured to send indication information to the terminal device on the physical downlink control channel PDCCH;
  • the PDCCH includes multiple scheduling units, and the indication information separately occupies one scheduling unit in the PDCCH.
  • the third embodiment of the third aspect of the invention comprises:
  • the sending unit is specifically configured to send indication information to the terminal device on the physical downlink control channel PDCCH;
  • the PDCCH includes multiple scheduling units, and the indication information shares one scheduling unit with the downlink scheduling information.
  • a fourth embodiment of the third aspect of the invention comprises:
  • the sending unit is further configured to send downlink scheduling information to the terminal device, and send downlink data to the terminal device according to the downlink scheduling information.
  • a third embodiment of the third aspect of the present invention, a second embodiment of the third aspect of the present invention, a third embodiment of the third aspect of the present invention, and a fourth embodiment of the third aspect of the present invention includes:
  • the receiving unit is specifically configured to receive the downlink feedback information sent by the terminal device, where the downlink feedback information is a sequence;
  • the downlink feedback information respectively identifies an acknowledgment ACK and a negative acknowledgment NACK through different sequences, and the sequence characterization of the ACK and the sequence of the NACK satisfy cross-correlation and/or orthogonality.
  • a third embodiment of the third aspect of the present invention, a second embodiment of the third aspect of the present invention, a third embodiment of the third aspect of the present invention, and a fourth embodiment of the third aspect of the present invention According to a fifth embodiment of the third aspect of the present invention, the sixth embodiment of the third aspect of the present invention comprises:
  • the indication information is further used to indicate a data format used by the terminal device to send the downlink feedback information
  • the receiving unit is specifically configured to receive the downlink feedback information that is sent by the terminal device according to the data format indicated by the indication information.
  • the fourth aspect of the present invention provides a terminal device, including:
  • a receiving unit configured to receive indication information sent by the base station
  • a sending unit configured to send downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, where the downlink feedback information is used to feed back the terminal device to receive The reception of downlink data.
  • the first embodiment of the fourth aspect of the invention comprises:
  • the receiving unit is further configured to receive downlink scheduling information sent by the base station;
  • the receiving unit After the receiving unit receives the indication information sent by the base station, the receiving unit is further configured to receive downlink data sent by the base station, where the downlink data is downlink data sent by the base station to the terminal device according to the downlink scheduling information. .
  • the second embodiment of the fourth aspect of the invention comprises:
  • the receiving unit Before the receiving unit receives the indication information sent by the base station, the receiving unit is further configured to receive downlink scheduling information sent by the base station, and receive downlink data sent by the base station, where the downlink data is sent by the base station according to the downlink scheduling information. Downlink data sent by the terminal device.
  • the first embodiment of the fourth aspect of the present invention, and the second embodiment of the fourth aspect of the present invention, the third embodiment of the fourth aspect of the present invention includes:
  • the sending unit is configured to send, according to the target time-frequency resource location indicated by the indication information, downlink feedback information, the downlink feedback information, to the base station at the target time-frequency resource location. For the sequence;
  • the downlink feedback information respectively identifies the acknowledgement ACK and the negative row determination NACK by different sequences, and the sequence characterizing the ACK and the sequence of the NACK satisfy cross-correlation and/or orthogonality.
  • a first embodiment of the fourth aspect of the present invention, a second embodiment of the fourth aspect of the present invention, and a third embodiment of the fourth aspect of the present invention, a fourth embodiment of the fourth aspect of the present invention include:
  • the indication information is further used to indicate a data format used by the terminal device to send the downlink feedback information
  • the sending unit is configured to send downlink feedback information to the base station according to the data format indicated by the indication information at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the indication information by the base station, and the base station can ensure that the time-frequency resource locations of the downlink feedback information of different downlink data are different by using the indication information. Therefore, the problem of resource conflict in the prior art is avoided. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • FIG. 1 is a flow chart of transmission of a downlink feedback information
  • FIG. 2 is a flowchart of a method for transmitting downlink feedback information according to an embodiment of the present invention
  • FIG. 3 is another flowchart of a method for transmitting downlink feedback information according to an embodiment of the present invention.
  • FIG. 5 is another interaction flowchart of a method for transmitting downlink feedback information according to an embodiment of the present invention.
  • FIG. 6 is another interaction flowchart of a method for transmitting downlink feedback information according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a server according to an embodiment of the present invention.
  • the embodiment of the invention provides a method for transmitting downlink feedback information, a base station, and a terminal device, which can solve the problem of feedback information resource selection of the communication system scheduled across the PDCCH.
  • the LTE system is taken as an example in the foregoing background, the person skilled in the art should know that the present invention is not only applicable to the LTE system, but also applicable to other wireless communication systems, such as the Global System for Global System (Global System for Mobile System). Mobile Communication, GSM), Universal Mobile Telecommunications System (UMTS), Code Division Multiple Access (CDMA) system, and new network systems.
  • GSM Global System for Global System
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • 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), and the wireless terminal can be a mobile terminal, such as a mobile phone (or called a "bee" A "phone” and a computer having a mobile terminal, for example, 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.
  • RAN Radio Access Network
  • Wireless terminals can also Called System, Subscriber Unit, Subscriber Station, Mobile Station, Mobile, Remote Station, Access Point, Remote Terminal (Remote) Terminal), Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • the base station may be configured to convert the received air frame and the IP packet into a router between the wireless terminal and the rest of the access network, where the rest of the access network may include the 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.
  • an embodiment of a method for transmitting downlink feedback information in an embodiment of the present invention includes:
  • the base station sends the indication information to the terminal device, where the indication information is used to indicate the target time-frequency resource location, where the target time-frequency resource location is the time-frequency resource location of the downlink information sent by the terminal device, and the downlink feedback information is used to feed back the foregoing The receiving status of the downlink data received by the terminal device;
  • the base station may send the indication information to the terminal device on the PDCCH, and the base station may also send the indication information to the terminal device on the PDSCH.
  • the downlink data is downlink data that the base station sends to the terminal device in advance
  • the time when the base station sends the downlink data to the terminal device in advance may be before step 101. After the step 101, if possible, the time may be the same as the time of the step 101.
  • the receiving situation refers to whether the terminal device correctly receives the downlink data
  • the time-frequency resource location refers to the time position and/or Or frequency location.
  • the base station sends the indication information to the terminal device, include:
  • the base station sends the indication information to the terminal device on the PDCCH; where the PDCCH includes multiple scheduling units, and the indication information separately occupies one scheduling unit.
  • one scheduling unit that is separately occupied by the foregoing indication information in the PDCCH may be downlink control information (English name: Downlink Control Information, English abbreviation: DCI), and an example scheduling unit may include time-frequency resource location information.
  • modulation and coding scheme English full name: Modulation and Coding Scheme, English abbreviation: MCS
  • coding block size English full name: Code Block Size
  • message identifier English full name: Message Identifier, English abbreviation: MID
  • the time-frequency resource location information is used to indicate the time position and/or frequency location of the downlink feedback information, and the information indicating the time location and the information indicating the frequency location may be separately indicated.
  • the MCS indication information and the CBS indication information are used to indicate the data format used by the user to send the downlink feedback information. For example, if the downlink feedback information needs to be subjected to code modulation and the like, the MCS information may be used to indicate the bit rate and modulation mode of the downlink feedback information.
  • the CBS indication information can be used to indicate the packet size of the downlink feedback information. In addition, if the form of the downlink feedback information is a sequence, the CBS indication information may be used to indicate the sequence length of the downlink feedback information.
  • the message identifier can be used to distinguish which type of scheduling information the indication information belongs to, such as PDSCH scheduling information, PUSCH scheduling information, and feedback information scheduling information.
  • the base station receives downlink feedback information sent by the terminal device.
  • the base station After the base station sends the indication information to the terminal device, the base station receives the downlink feedback information sent by the terminal device.
  • the base station receives the downlink feedback information sent by the terminal device, specifically:
  • the downlink feedback information respectively identifies the acknowledgement ACK and the negative acknowledgement NACK through different sequences, and the sequence of the characterized ACK and the sequence of the NACK satisfy the cross-correlation and/or the orthogonality.
  • the two sequences satisfying the cross-correlation sequence group are the pseudo-random sequence 1 and the pseudo-random sequence 2
  • the two sequences satisfying the orthogonal sequence group are the Hadamard sequence 1 ⁇ Hadamard sequence 2, and other combinations are also included. I will not repeat them one by one.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is adopted by the base station.
  • the base station can ensure that the time-frequency resource positions of the downlink feedback information of different downlink data are different by using the indication information, thereby avoiding the problem of resource conflict in the prior art. Therefore, the present invention can ensure that the base station correctly receives the terminal device.
  • the downlink feedback information sent effectively improves the transmission success rate of the downlink feedback information.
  • another embodiment of a method for transmitting downlink feedback information in an embodiment of the present invention includes:
  • the terminal device receives the indication information sent by the base station.
  • the terminal device may receive the indication information sent by the base station on the PDCCH, and the terminal device may also receive the indication information sent by the base station on the PDSCH.
  • the terminal device sends, according to the target time-frequency resource location indicated by the indication information, downlink feedback information to the base station at the target time-frequency resource location, where the downlink feedback information is used to feed back the downlink data received by the terminal device. .
  • the terminal device After receiving the indication information sent by the base station, the terminal device sends the downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, where the downlink feedback information is received by the terminal device. Feedback information for downstream data.
  • the downlink data is downlink data that the base station sends to the terminal device in advance
  • the time when the base station sends the downlink data to the terminal device in advance may be before step 201, or after step 201, and may be possible, if possible.
  • the above receiving situation refers to whether the terminal device correctly receives the downlink data.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the indication information by the base station, and the base station can ensure that the time-frequency resource location of the downlink feedback information of different downlink data is different by using the indication information, thereby The problem of the resource conflict in the prior art is avoided. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • another embodiment of a method for transmitting downlink feedback information in an embodiment of the present invention includes include:
  • the base station sends downlink scheduling information to the terminal device.
  • the base station in order to send downlink data to the terminal device, the base station needs to first send downlink scheduling information to the terminal device.
  • the base station sends downlink data to the terminal device.
  • the base station After the base station sends the downlink scheduling information to the terminal device, the base station sends the downlink data to the terminal device according to the indication of the downlink scheduling information.
  • the base station sends the indication information to the terminal device.
  • the base station After the base station sends the downlink data to the terminal device, the base station sends the indication information to the terminal device, where the indication information is used to indicate the target time-frequency resource location, where the target time-frequency resource location is the time-frequency resource location where the terminal device sends the downlink feedback information,
  • the downlink feedback information is used to feed back the receiving status of the downlink data received by the terminal device;
  • the terminal device sends downlink feedback information to the base station.
  • the terminal device After the base station sends the indication information to the terminal device, the terminal device sends downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, and the downlink feedback information and the downlink data received by the terminal device. Corresponding.
  • the foregoing indication information may also be used to indicate a data format used by the terminal device to send the downlink feedback information. Therefore, in some embodiments of the present invention, the terminal device may send the downlink feedback information to the base station, which may be specifically: the terminal device. According to the target time-frequency resource location and the data format indicated by the indication information, the downlink feedback information is sent to the base station according to the foregoing data format at the target time-frequency resource location.
  • the indication information may also indicate other information, which will not be enumerated here.
  • the indication information and the downlink scheduling information are sent in the same message, or may be sent in the same message.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the indication information by the base station, and the base station can ensure that the time-frequency resource location of the downlink feedback information of different downlink data is different by using the indication information, thereby The problem of the resource conflict in the prior art is avoided. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • the indication information in this embodiment is sent to the terminal after the downlink data is sent. Therefore, a process for supporting the technical solution of the present invention is provided, which enriches the technical solution of the present invention.
  • another embodiment of a method for transmitting downlink feedback information in an embodiment of the present invention includes:
  • the base station sends downlink scheduling information and indication information to the terminal device.
  • the base station sends downlink scheduling information and indication information to the terminal device on the PDCCH, where the PDCCH includes multiple scheduling units, and the indication information shares one scheduling unit with the downlink scheduling information.
  • the indication information and the downlink scheduling are performed.
  • the information shares a scheduling unit, and the indication information is included in the downlink scheduling information.
  • the indication information can be placed in any PDCCH period for transmission.
  • the base station can place the downlink scheduling information and the indication information into the same scheduling period, so that the terminal device can obtain the same in one scheduling period.
  • the downlink scheduling information and the indication information are also put the indication information into other scheduling periods, for example, before or after the scheduling period in which the downlink scheduling information is located. Scheduling cycle.
  • the base station sends downlink data to the terminal device.
  • the base station After the base station sends the downlink scheduling information to the terminal device, the base station sends the downlink data to the terminal device according to the indication of the downlink scheduling information.
  • the terminal device sends downlink feedback information to the base station.
  • the terminal device After receiving the indication information, the terminal device sends the downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, where the downlink feedback information is used to feed back the downlink data received by the terminal device. Receiving situation.
  • the foregoing indication information may also be used to indicate a data format used by the terminal device to send the downlink feedback information. Therefore, in some embodiments of the present invention, the terminal device may send the downlink feedback information to the base station, which may be specifically: the terminal device. According to the target time-frequency resource location and the data format indicated by the indication information, the downlink feedback information is sent to the base station according to the foregoing data format at the target time-frequency resource location.
  • the indication information may also indicate other information, which will not be enumerated here.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the base station by using the indication information, and the base station can ensure the downlink feedback information of different downlink data by using the indication information.
  • the time-frequency resource location is different, so as to avoid the problem of resource conflict in the prior art. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • the indication information in this embodiment is sent by the base station together with the downlink scheduling information, thereby providing a flow supporting the technical solution of the present invention, which enriches the technical solution of the present invention.
  • another embodiment of a method for transmitting downlink feedback information in an embodiment of the present invention includes:
  • the base station sends downlink scheduling information to the terminal device.
  • the base station sends downlink scheduling information to the terminal device on the PDCCH.
  • the base station sends downlink data to the terminal device, where the downlink data carries indication information.
  • the base station sends downlink data to the terminal device on the PDSCH according to the indication of the downlink scheduling information, where the downlink data carries the indication information.
  • the terminal device sends downlink feedback information to the base station.
  • the terminal device After receiving the indication information, the terminal device sends the downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, where the downlink feedback information is used to feed back the downlink data received by the terminal device. Receiving situation.
  • the foregoing indication information may also be used to indicate a data format used by the terminal device to send the downlink feedback information. Therefore, in some embodiments of the present invention, the terminal device may send the downlink feedback information to the base station, which may be specifically: the terminal device. According to the target time-frequency resource location and the data format indicated by the indication information, the downlink feedback information is sent to the base station according to the foregoing data format at the target time-frequency resource location.
  • the indication information may also indicate other information, which will not be enumerated here.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the indication information by the base station, and the base station can ensure that the time-frequency resource location of the downlink feedback information of different downlink data is different by using the indication information, thereby The problem of the resource conflict in the prior art is avoided. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • the indication information in this embodiment is sent by the base station together with the downlink data, thereby providing a flow supporting the technical solution of the present invention, which enriches the technical solution of the present invention.
  • the base station sends the downlink scheduling information to the terminal device on the PDCCH, and the base station sends the downlink data to the terminal device according to the indication in the downlink scheduling information.
  • the base station sends the indication information to the terminal device, and the indication information is occupied independently.
  • a scheduling unit includes time-frequency resource location information, MCS information, and CBS information, and the MCS information and the CBS information indicate a data format used by the terminal device to send downlink feedback information, and the terminal device parses the indication information after receiving the indication information, The downlink feedback information is fed back to the base station according to the time-frequency resource location indicated by the indication information and the data format.
  • the above embodiments are all real-time time-frequency resource locations and transmission formats of the downlink feedback information, and may also adopt a scheme of fixed resource mapping. Specifically:
  • the signal form may be a sequence. Therefore, different sequences can be used to respectively represent ACK and NACK. If the terminal device successfully receives the downlink data and needs to feed back the ACK, it sends a sequence that represents the ACK. Otherwise, if the NACK needs to be fed back, the sequence characterizing the NACK is sent, and in addition, the ACK is characterized. Sequences and sequences that characterize NACKs need to satisfy cross-correlation and/or orthogonality, such as pseudo-random sequences, Hadamard sequences, or product sequences of pseudo-random sequences and Hadamard sequences.
  • the terminal device determines the available feedback resource block in time according to the end time of the downlink data, and then controls the channel unit according to the start of the scheduling information of the downlink data (Control) Channel Element , CCE)
  • the location of the resource determines the time-frequency resource location of the downlink feedback information.
  • the sequence used by the terminal device to feed back the ACK/NACK is related to the start frame number of the scheduling period in which the downlink scheduling information of the downlink data of the terminal device is located, and the downlink data scheduled in different scheduling periods,
  • the sequences used for feedback ACK/NACK are different and are cross-correlated or orthogonal.
  • the terminal device determines the time-frequency position of the downlink feedback information according to the end time of the downlink data, or the terminal device starts the CCE according to the end time of the downlink data and the downlink control information (Downlink Control Information (DCI) of the scheduled downlink data.
  • the resource location determines the time-frequency location of the downlink feedback information, and selects a different sequence group according to the starting frame number of the scheduling period in which the DCI of the scheduled downlink data is scheduled to represent the ACK/NACK.
  • the scheme for the fixed resource mapping described above performs the code division processing based on different DCI periods for the ACK/NACK sequence. Even if the downlink feedback information of the terminal equipment of different DCI periods collides, the existence of the code division will not be interfered. Correct reception of downlink feedback information.
  • an embodiment of a base station according to an embodiment of the present invention includes:
  • the sending unit 601 is configured to send the indication information to the terminal device, where the indication information is used to indicate a target time-frequency resource location, where the target time-frequency resource location is a time-frequency resource location where the terminal device sends the downlink feedback information, where the downlink feedback information Used to feed back the reception of downlink data received by the terminal device;
  • the receiving unit 602 is configured to receive the downlink feedback information sent by the terminal device.
  • the time-frequency resource location of the downlink feedback information sent by the terminal device is indicated by the sending unit 601 by using the indication information, and the sending unit 601 can ensure that the time-frequency resource location of the downlink feedback information of different downlink data is Different, so as to avoid the problem of resource conflict in the prior art. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • the sending unit 601 is further configured to send downlink scheduling information to the terminal device, and send downlink data to the terminal device according to the downlink scheduling information. Further, in some embodiments of the present invention, the sending unit 601 is specifically configured to send indication information to the terminal device on the physical downlink control information PDCCH, where the PDCCH includes multiple scheduling units, and the indication information is separately occupied in the PDCCH. a scheduling unit;
  • the sending unit 601 is further configured to send downlink scheduling information to the terminal device, and after sending the indication information to the terminal device, further configured to send downlink data to the terminal device according to the downlink scheduling information.
  • the sending unit 601 is specifically configured to send indication information to the terminal device on the physical downlink control information PDCCH, where the PDCCH includes multiple scheduling units, and the indication information and the downlink scheduling information share one scheduling. And the indication information and the downlink scheduling information share a scheduling unit, and the indication information is included in the downlink scheduling information.
  • the receiving unit 602 is specifically configured to receive downlink feedback information sent by the terminal device, where the downlink feedback information is a sequence;
  • the downlink feedback information is respectively characterized by different sequences to confirm ACK and negation
  • the NACK is confirmed, the sequence characterizing the ACK and the sequence of the NACK satisfy the cross-correlation and/or orthogonality.
  • the indication information is further used to indicate a data format used by the terminal device to send the downlink feedback information, where the receiving unit 602 is specifically configured to receive, by the terminal device, the data format that is sent according to the indication information. Downstream feedback information.
  • an embodiment of the terminal device according to the embodiment of the present invention includes:
  • the receiving unit 701 is configured to receive indication information sent by the base station
  • the sending unit 702 is configured to send downlink feedback information to the base station at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information, where the downlink feedback information is used to feed back the downlink data received by the terminal device.
  • the time-frequency resource location of the downlink feedback information sent by the sending unit 702 is indicated by the indication information by the base station, and the base station can ensure that the time-frequency resource locations of the downlink feedback information of different downlink data are different by using the indication information. Therefore, the problem of resource conflict in the prior art is avoided. Therefore, the present invention can ensure that the base station correctly receives the downlink feedback information sent by the terminal device, and effectively improves the transmission success rate of the downlink feedback information.
  • the receiving unit 701 before the receiving unit 701 receives the indication information sent by the base station, the receiving unit 701 is further configured to receive downlink scheduling information sent by the base station, and receive downlink data sent by the base station, where the downlink data is The downlink data that the base station sends to the terminal device according to the downlink scheduling information.
  • the receiving unit 701 after the receiving unit 701 receives the indication information sent by the base station, the receiving unit 701 is further configured to receive downlink data sent by the base station, where the downlink data is sent by the base station to the terminal device according to the downlink scheduling information. Downstream data.
  • the indication information and the downlink scheduling information are sent in the same message, or may be sent in the same message.
  • the sending unit 702 is configured to send downlink feedback information, where the downlink feedback information is sent to the base station, at the target time-frequency resource location according to the target time-frequency resource location indicated by the indication information. For the sequence;
  • the downlink feedback information respectively identifies the acknowledgement ACK and the negative row determination NACK by different sequences, and the sequence of the ACK and the sequence of the NACK satisfy the cross-correlation and/or the orthogonality.
  • the indication information is further used to indicate a data format used by the terminal device to send the downlink feedback information
  • the sending unit 702 is specifically configured to use the target time-frequency resource location and the data format indicated by the indication information.
  • downlink feedback information is sent to the base station according to the above data format.
  • the sending unit 601 sends the downlink scheduling information to the terminal device on the PDCCH, and sends the downlink data to the terminal device according to the indication in the downlink scheduling information.
  • the sending unit 601 sends the indication information to the receiving unit 701, where the indication is sent.
  • the information occupies a scheduling unit, and the scheduling unit includes the time-frequency resource location information, the MCS information, and the CBS information.
  • the MCS information and the CBS information indicate the data format used by the sending unit 702 to send the downlink feedback information, and the receiving unit 701 receives the indication information. And parsing the indication information, the sending unit 702 feeds back the downlink feedback information to the receiving unit 602 according to the time-frequency resource location and the data format indicated by the indication information.
  • an embodiment of the server in the embodiment of the present invention includes:
  • FIG. 9 is a schematic structural diagram of a server according to an embodiment of the present invention.
  • the server 800 may have a large difference due to different configurations or performances, and may include one or more central processing units (CPUs) 801 (for example, One or more processors), one or more storage media 804 that store application 802 or data 803 (eg, one or one storage device in Shanghai).
  • the storage medium 804 can be short-term storage or persistent storage.
  • the program stored on storage medium 804 may include one or more modules (not shown), each of which may include a series of instruction operations in the switch.
  • central processor 801 can be configured to communicate with storage medium 804, executing a series of instruction operations in storage medium 804 on server 800.
  • Server 800 may also include one or more power sources 805, one or more wired or wireless network interfaces 806, one or more output interfaces 807, and/or one or more operating systems 808, such as Windows ServerTM, Mac OS. XTM, UnixTM, LinuxTM, FreeBSDTM and more.
  • operating systems 808, such as Windows ServerTM, Mac OS. XTM, UnixTM, LinuxTM, FreeBSDTM and more.
  • the steps performed by the base station in the above embodiments may be based on the server structure shown in FIG.

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Abstract

本发明公开了下行反馈信息的传输方法、基站以及终端设备，能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。本发明实施例方法包括：基站向终端设备发送指示信息，所述指示信息用于指示目标时频资源位置，所述目标时频资源位置为所述终端设备发送下行反馈信息的时频资源位置，其中，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况；所述基站接收所述终端设备发送的所述下行反馈信息。

Description

下行反馈信息的传输方法、基站以及终端设备 技术领域
本发明涉及通信技术领域，尤其涉及下行反馈信息的传输方法、基站以及终端设备。
背景技术
随着机器到机器(英文全称：Machine to Machine，英文缩写：M2M)通信应用的飞速发展，市场需求和规模呈现爆发式增长。M2M通信应用有着其不同于传统通信业务的业务需求，比如深覆盖和低功耗。针对M2M通信应用的业务需求提出了如下的方案：终端设备在接收到基站在物理下行共享信道(英文全称：Physical Downlink Shared Channel，英文缩写：PDSCH)上发送的下行数据后，需要对该下行数据进行反馈，接收成功则反馈确认(英文全称：Acknowledgement，英文缩写：ACK)，否者反馈否定性确认(英文全称：Negative Acknowledgement，英文缩写：NACK)，例如，数据传输流程可如图1所示。
在图1的数据传输流程中，目前主要是通过物理下行控制信道(英文全称：Physical Downlink Control Channel，英文缩写：PDCCH)的时频资源位置来映射下行反馈信息的时频资源位置，使得下行反馈信息的时频资源位置确定，在下行反馈信息的时频资源位置处对PDSCH上发送的下行数据进行反馈。
但是，对于存在跨PDCCH调度的系统，通过PDCCH的时频资源位置来映射下行反馈信息的时频资源位置，可能存在多个下行数据在同一个下行反馈信息的时频资源位置处反馈，引起资源冲突，使得基站不能正确接收终端设备发送的下行反馈信息，导致下行反馈信息的传输成功率不高。
发明内容
本发明实施例提供了下行反馈信息的传输方法、基站以及终端设备，能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
有鉴于此，本发明第一方面提供了一种下行反馈信息的传输方法，包括：
为了避免多个下行数据在同一个下行反馈信息的时频资源位置处反馈，引 起资源冲突，基站向终端设备发送指示信息，所述指示信息用于指示目标时频资源位置，所述目标时频资源位置为所述终端设备发送下行反馈信息的时频资源位置，其中，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况；
所述基站接收所述终端设备发送的所述下行反馈信息。
需要说明的是，终端设备发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
结合本发明第一方面，本发明第一方面的第一实施方式包括：
所述基站向所述终端设备发送下行调度信息；
所述基站向终端设备发送指示信息之后，还包括：
所述基站根据所述下行调度信息向所述终端设备发送下行数据。
需要说明的是，指示信息和下行调度信息的发送不分先后，可以在同一条消息中发送，也可以分条发送。
结合本发明第一方面，本发明第一方面的第二实施方式包括：
所述基站向终端设备发送指示信息，包括：
所述基站在物理下行控制信道PDCCH上向终端设备发送指示信息；
其中，所述PDCCH包括多个调度单元，所述指示信息在所述PDCCH中单独占用一个调度单元。调度单元包括下行反馈信息的时频资源位置信息。
结合本发明第一方面的第一实施方式，本发明第一方面的第三实施方式包括：
所述基站在物理下行控制信道PDCCH上向终端设备发送指示信息；
其中，所述PDCCH包括多个调度单元，所述指示信息与所述下行调度信息共用一个调度单元。
结合本发明第一方面，本发明第一方面的第四实施方式包括：
所述基站向终端设备发送指示信息，之前包括：
基站向终端设备发送下行调度信息；
所述基站根据所述下行调度信息向所述终端设备发送下行数据。
结合本发明第一方面、本发明第一方面的第一实施方式、本发明第一方面的第二实施方式、本发明第一方面的第三实施方式、本发明第一方面的第四实施方式，本发明第一方面的第五实施方式包括：
所述基站接收所述终端设备发送的所述下行反馈信息，包括：
所述基站接收所述终端设备发送的所述下行反馈信息，所述下行反馈信息为序列；
其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定性确认NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
结合本发明第一方面、本发明第一方面的第一实施方式、本发明第一方面的第二实施方式、本发明第一方面的第三实施方式、本发明第一方面的第四实施方式、本发明第一方面的第五实施方式，本发明第一方面的第六实施方式包括：
所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
所述基站接收所述终端设备发送的所述下行反馈信息，包括：
所述基站接收所述终端设备按照所述指示信息指示的数据格式发送的所述下行反馈信息。
有鉴于此，本发明第二方面提供了一种下行反馈信息的传输方法，包括：
终端设备接收基站发送的指示信息；
所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况。
需要说明的是，终端设备发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
结合本发明第二方面，本发明第二方面的第一实施方式包括：
所述终端设备接收基站发送的下行调度信息；
所述终端设备接收基站发送的指示信息之后，还包括：
所述终端设备接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
结合本发明第二方面，本发明第二方面的第二实施方式包括：
所述终端设备接收基站发送的指示信息之前，还包括：
终端设备接收基站发送的下行调度信息；
所述终端设备接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
结合本发明第二方面、本发明第二方面的第一实施方式、本发明第二方面的第二实施方式，本发明第二方面的第三实施方式包括：
所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，包括：
所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息为序列；
其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定行确定NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
结合本发明第二方面、本发明第二方面的第一实施方式、本发明第二方面的第二实施方式，本发明第二方面的第三实施方式，本发明第二方面的第四实施方式包括：
所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，包括：
所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，按照所述指示信息指示的数据格式向所述基站发送下行反馈信息。
有鉴于此，本发明第三方面提供了一种基站，包括：
发送单元，用于向终端设备发送指示信息，所述指示信息用于指示目标时频资源位置，所述目标时频资源位置为所述终端设备发送下行反馈信息的时频资源位置，其中，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况；
接收单元，用于接收所述终端设备发送的所述下行反馈信息。
结合本发明第三方面，本发明第三方面的第一实施方式包括：
所述发送单元，还用于向所述终端设备发送下行调度信息；
所述发送单元向终端设备发送指示信息之后，所述发送单元，还用于根据所述下行调度信息向所述终端设备发送下行数据。
结合本发明第三方面，本发明第三方面的第二实施方式包括：
所述发送单元，具体用于在物理下行控制信道PDCCH上向终端设备发送指示信息；
其中，所述PDCCH包括多个调度单元，所述指示信息在所述PDCCH中单独占用一个调度单元。
结合本发明第三方面的第一实施方式，本发明第三方面的第三实施方式包括：
所述发送单元，具体用于在物理下行控制信道PDCCH上向终端设备发送指示信息；
其中，所述PDCCH包括多个调度单元，所述指示信息与所述下行调度信息共用一个调度单元。
结合本发明第三方面，本发明第三方面的第四实施方式包括：
所述发送单元，还用于向终端设备发送下行调度信息；根据所述下行调度信息向所述终端设备发送下行数据。
结合本发明第三方面、本发明第三方面的第一实施方式、本发明第三方面的第二实施方式、本发明第三方面的第三实施方式、本发明第三方面的第四实施方式，本发明第三方面的第五实施方式包括：
所述接收单元，具体用于接收所述终端设备发送的所述下行反馈信息，所述下行反馈信息为序列；
其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定性确认NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
结合本发明第三方面、本发明第三方面的第一实施方式、本发明第三方面的第二实施方式、本发明第三方面的第三实施方式、本发明第三方面的第四实施方式、本发明第三方面的第五实施方式，本发明第三方面的第六实施方式包括：
所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
所述接收单元，具体用于接收所述终端设备按照所述指示信息指示的数据格式发送的所述下行反馈信息。
有鉴于此，本发明第四方面提供了一种终端设备，包括：
接收单元，用于接收基站发送的指示信息；
发送单元，用于根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况。
结合本发明第四方面，本发明第四方面的第一实施方式包括：
所述接收单元，还用于接收基站发送的下行调度信息；
所述接收单元接收基站发送的指示信息之后，所述接收单元，还用于接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
结合本发明第四方面，本发明第四方面的第二实施方式包括：
所述接收单元接收基站发送的指示信息之前，所述接收单元，还用于接收基站发送的下行调度信息；接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
结合本发明第四方面、本发明第四方面的第一实施方式、本发明第四方面的第二实施方式，本发明第四方面的第三实施方式包括：
所述发送单元，具体用于根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息 为序列；
其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定行确定NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
结合本发明第四方面、本发明第四方面的第一实施方式、本发明第四方面的第二实施方式、本发明第四方面的第三实施方式，本发明第四方面的第四实施方式包括：
所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
所述发送单元，具体用于根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，按照所述指示信息指示的数据格式向所述基站发送下行反馈信息。
相较于现有技术：终端设备发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为现有的一种下行反馈信息的传输流程图；
图2为本发明实施例中下行反馈信息的传输方法的一个流程图；
图3为本发明实施例中下行反馈信息的传输方法的另一个流程图；
图4为本发明实施例中下行反馈信息的传输方法的一个交互流程图；
图5为本发明实施例中下行反馈信息的传输方法的另一个交互流程图；
图6为本发明实施例中下行反馈信息的传输方法的另一个交互流程图；
图7为本发明实施例基站的结构示意图；
图8为本发明实施例终端设备的结构示意图；
图9为本发明实施例服务器的结构示意图。
具体实施方式
本发明实施例提供了下行反馈信息的传输方法、基站以及终端设备，能够解决跨PDCCH调度的通信系统的反馈信息资源选择问题。
为了使本技术领域的人员更好地理解本发明方案，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的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当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”“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。
虽然在前述背景技术部分以LTE系统为例进行了介绍，但本领域技术人员应当知晓，本发明不仅仅适用于LTE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 Communication，GSM)，移动通信系统(Universal Mobile Telecommunications Systemc，UMTS)，码分多址接入(Code Division Multiple Access，CDMA)系统，以及新的网络系统等。下面以LTE系统为例进行具体实施例的介绍。
本发明实施例涉及的终端设备，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基站，该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。该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。
下面结合具体实施例对本发明中下行反馈信息的传输方法进行说明:
请参阅图2，本发明实施例中下行反馈信息的传输方法一个实施例包括：
101、基站向终端设备发送指示信息，该指示信息用于指示目标时频资源位置，该目标时频资源位置为上述终端设备发送下行反馈信息的时频资源位置，该下行反馈信息用来反馈上述终端设备接收到的下行数据的接收情况；
本实施例中，基站可以在PDCCH上向终端设备发送指示信息，基站也可以在PDSCH上向终端设备发送指示信息。
需要说明的是，上述下行数据为基站预先向终端设备发送的下行数据，基站预先向终端设备发送下行数据的时间可以在步骤101之前。也可以在步骤101之后，在可能的情况下，也可以与步骤101的时间相同，另外，上述接收情况指的是终端设备是否正确接收到下行数据，时频资源位置指的是时间位置和/或频率位置。
需要说明的是，在本发明的一些实施例中，基站向终端设备发送指示信息， 包括：
基站在PDCCH上向终端设备发送指示信息；其中，PDCCH包括多个调度单元，指示信息单独占用一个调度单元。
需要说明的是，上述指示信息在PDCCH中单独占用的一个调度单元，可以为下行控制信息(英文全称：Downlink Control Information，英文缩写：DCI)，一种示例的调度单元可以包括时频资源位置信息，调制和编码方案(英文全称：Modulation and Coding Scheme，英文缩写：MCS)、编码块大小(英文全称：Code Block Size)、消息标识符(英文全称：Message Identifier，英文缩写：MID)，还可以包括其他信息，此处不再一一列举，上述时频资源位置信息用来指示用户发送下行反馈信息的时间位置和/或频率位置，指示时间位置的信息以及指示频率位置的信息可以分开指示，也可以统一一起指示。MCS指示信息和CBS指示信息用来指示用户发送下行反馈信息时采用的数据格式，比如，若下行反馈信息需要经过编码调制等过程，则MCS信息可用来指示下行反馈信息的码率、调制方式、CBS指示信息可用来指示下行反馈信息的包大小。另外，若下行反馈信息的形式是序列，则CBS指示信息可以用来指示下行反馈信息的序列长度。消息标识符可以用来区分该指示信息属于哪一类调度信息，如PDSCH调度信息、PUSCH调度信息、反馈信息调度信息。
102、基站接收上述终端设备发送的下行反馈信息。
基站在向终端设备发送指示信息后，基站接收上述终端设备发送的下行反馈信息。
可选的，在本发明的一些实施例中，基站接收上述终端设备发送的下行反馈信息，具体为：
基站接收上述终端设备发送的下行反馈信息，该下行反馈信息为序列；
其中，该下行反馈信息通过不同的序列分别表征确认ACK以及否定性确认NACK，表征ACK的序列和NACK的序列满足互相关性和/或正交性。
例如，满足互相关性序列组中的两个序列为伪随机序列1和伪随机序列2，满足正交性序列组中的两个序列为Hadamard序列1×Hadamard序列2，还包括其他组合，此处不再一一赘述。
本实施例中，终端设备发送的下行反馈信息的时频资源位置是由基站通过 指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
上面从基站侧对本发明的技术方案进行了描述，下面从终端设备侧对本发明的技术方案进行描述：
请参阅图3，本发明实施例中下行反馈信息的传输方法另一个实施例包括：
201、终端设备接收基站发送的指示信息；
本实施例中，终端设备可以在PDCCH上接收基站发送的指示信息，终端设备也可以在PDSCH上接收基站发送的指示信息。
202、终端设备根据该指示信息指示的目标时频资源位置，在该目标时频资源位置处，向基站发送下行反馈信息，该下行反馈信息用来反馈上述终端设备接收到的下行数据的接收情况。
终端设备在接收基站发送的指示信息后，终端设备根据该指示信息指示的目标时频资源位置，在目标时频资源位置处，向基站发送下行反馈信息，该下行反馈信息为终端设备反馈接收到的下行数据的反馈信息。
需要说明的是，上述下行数据为基站预先向终端设备发送的下行数据，基站预先向终端设备发送下行数据的时间可以在步骤201之前，也可以在步骤201之后，在可能的情况下，也可以与步骤201的时间相同，另外，上述接收情况指的是终端设备是否正确的接收到下行数据。
本实施例中，终端设备发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
上面分别从基站侧、终端设备侧对本发明的技术方案进行了描述，下面从基站与终端设备交互的角度对本发明的技术方案进行详细描述：
请参阅图4，本发明实施例中下行反馈信息的传输方法另一个实施例包 括：
301、基站向终端设备发送下行调度信息；
本实施例中，基站为了向终端设备发送下行数据，需要先向终端设备发送下行调度信息。
302、基站向终端设备发送下行数据；
基站在向终端设备发送下行调度信息后，基站根据下行调度信息的指示向终端设备发送下行数据。
303、基站向终端设备发送指示信息；
基站在向终端设备发送下行数据后，基站向终端设备发送指示信息，该指示信息用于指示目标时频资源位置，该目标时频资源位置为上述终端设备发送下行反馈信息的时频资源位置，该下行反馈信息用来反馈上述终端设备接收到的下行数据的接收情况；
304、终端设备向基站发送下行反馈信息。
基站在向终端设备发送指示信息后，终端设备根据指示信息指示的目标时频资源位置，在目标时频资源位置处，向基站发送下行反馈信息，该下行反馈信息与终端设备接收到的下行数据相对应。
需要说明的是，上述指示信息还可用于指示终端设备发送下行反馈信息采用的数据格式，由此，在本发明的一些实施例中，终端设备向基站发送下行反馈信息还可以具体为：终端设备根据指示信息指示的目标时频资源位置以及数据格式，在目标时频资源位置处，按照上述数据格式向基站发送下行反馈信息。
另外，指示信息还可以指示其他信息，此处不再一一列举。
需要说明的是，在本发明的一些实施例中，指示信息和下行调度信息的发送不分先后，可以在同一条消息中发送，也可以分条发送。
本实施例中，终端设备发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
其次，本实施例中的指示信息是在下行数据发送完毕后，再发送给终端设 备的，由此提供了一种支持本发明的技术方案的流程，丰富了本发明的技术方案。
请参阅图5，本发明实施例中下行反馈信息的传输方法另一个实施例包括：
401、基站向终端设备发送下行调度信息和指示信息；
本实施例中，基站在PDCCH上向终端设备发送下行调度信息和指示信息，其中，该PDCCH包括多个调度单元，该指示信息与下行调度信息共用一个调度单元；另外，该指示信息与下行调度信息共用一个调度单元，可以为：该指示信息包含在下行调度信息中。
需要说明的是，指示信息可以放置到任意的PDCCH周期进行传输，优选的，基站可以将下行调度信息以及指示信息放置到同一个调度周期内，这样，终端设备在一个调度周期内就可以同时获得下行调度信息以及指示信息，当然，如果下行调度信息所处的调度周期调度资源紧张，基站也可以将指示信息放置到其他的调度周期，比如，放置在下行调度信息所处的调度周期前面或后面的调度周期。
402、基站向终端设备发送下行数据；
基站在向终端设备发送下行调度信息后，基站根据下行调度信息的指示向终端设备发送下行数据。
403、终端设备向基站发送下行反馈信息。
终端设备接收指示信息后，终端设备根据指示信息指示的目标时频资源位置，在目标时频资源位置处，向基站发送下行反馈信息，该下行反馈信息用于反馈终端设备接收到的下行数据的接收情况。
需要说明的是，上述指示信息还可用于指示终端设备发送下行反馈信息采用的数据格式，由此，在本发明的一些实施例中，终端设备向基站发送下行反馈信息还可以具体为：终端设备根据指示信息指示的目标时频资源位置以及数据格式，在目标时频资源位置处，按照上述数据格式向基站发送下行反馈信息。
另外，指示信息还可以指示其他信息，此处不再一一列举。
本实施例中，终端设备发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息 的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
其次，本实施例中的指示信息是和下行调度信息一起由基站发送的，由此提供了一种支持本发明的技术方案的流程，丰富了本发明的技术方案。
请参阅图6，本发明实施例中下行反馈信息的传输方法另一个实施例包括：
501、基站向终端设备发送下行调度信息；
本实施例中，基站在PDCCH上向终端设备发送下行调度信息。
502、基站向终端设备发送下行数据，该下行数据携带有指示信息；
基站根据下行调度信息的指示，在PDSCH上向终端设备发送下行数据，该下行数据携带有指示信息。
503、终端设备向基站发送下行反馈信息。
终端设备接收指示信息后，终端设备根据指示信息指示的目标时频资源位置，在目标时频资源位置处，向基站发送下行反馈信息，该下行反馈信息用于反馈终端设备接收到的下行数据的接收情况。
需要说明的是，上述指示信息还可用于指示终端设备发送下行反馈信息采用的数据格式，由此，在本发明的一些实施例中，终端设备向基站发送下行反馈信息还可以具体为：终端设备根据指示信息指示的目标时频资源位置以及数据格式，在目标时频资源位置处，按照上述数据格式向基站发送下行反馈信息。
另外，指示信息还可以指示其他信息，此处不再一一列举。
本实施例中，终端设备发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
其次，本实施例中的指示信息是和下行数据一起由基站发送的，由此提供了一种支持本发明的技术方案的流程，丰富了本发明的技术方案。
为了便于理解，下面以一实际的应用场景对本发明实施例中的下行反馈信 息的传输方法进行描述：
基站在PDCCH向终端设备发送下行调度信息，基站按照下行调度信息中的指示，向终端设备发送下行数据，基站在向终端设备发送下行数据后，基站向终端设备发送指示信息，该指示信息独立占用一个调度单元，调度单元中包括时频资源位置信息、MCS信息以及CBS信息，MCS信息以及CBS信息指示终端设备发送下行反馈信息采用的数据格式，终端设备在接收到指示信息后，解析指示信息，按照指示信息指示的时频资源位置以及数据格式向基站反馈下行反馈信息。
上面的实施例均为基站实时的指示下行反馈信息的时频资源位置、发送格式，另外，还可以采用固定资源映射的方案。具体为：
终端设备发送的下行反馈信息中，信号形式可以为序列。由此可以采用不同的序列分别表征ACK和NACK，若终端设备成功接收下行数据，需要反馈ACK，则发送表征ACK的序列，否则，需要反馈NACK，则发送表征NACK的序列，另外，表征ACK的序列和表征NACK的序列需要满足互相关性和/或正交性，比如伪随机序列、Hadamard序列或者伪随机序列和Hadamard序列的乘积序列。
关于时频资源位置的确定，当终端设备接收完下行数据后，根据下行数据的结束时刻，确定时间上最近的可用反馈信息资源块，然后根据下行数据的调度信息的起始控制信道单元(Control Channel Element，CCE)资源位置确定下行反馈信息的时频资源位置。
关于下行反馈信息的确定，终端设备反馈ACK/NACK所使用的序列，与终端设备的下行数据的下行调度信息所处的调度周期的起始帧号有关，在不同调度周期被调度的下行数据，反馈ACK/NACK所使用的序列是不同的，且是具有互相关性或相互正交。
概括的讲，终端设备根据下行数据的结束时刻确定下行反馈信息的时频位置，或者，终端设备根据下行数据的结束时刻和被调度下行数据的下行控制信息(Downlink Control Information，DCI)起始CCE的资源位置，确定下行反馈信息的时频位置，根据被调度下行数据的DCI所处调度周期的起始帧号选择不同的序列组来表征ACK/NACK。
上述固定资源映射的方案，通过对ACK/NACK序列进行基于不同DCI周期的码分处理，即使不同DCI周期的终端设备的下行反馈信息发生碰撞，由于码分的存在，也不会受到干扰，保证下行反馈信息的正确接收。
下面介绍本发明实施例中的基站，请参阅图7，本发明实施例基站的一个实施例包括：
发送单元601，用于向终端设备发送指示信息，该指示信息用于指示目标时频资源位置，该目标时频资源位置为终端设备发送下行反馈信息的时频资源位置，其中，该下行反馈信息用来反馈终端设备接收到的下行数据的接收情况；
接收单元602，用于接收终端设备发送的上述下行反馈信息。
本实施例中，终端设备发送的下行反馈信息的时频资源位置是由发送单元601通过指示信息指示的，发送单元601通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
可选的，在本发明的一些实施例中，上述发送单元601，还用于向终端设备发送下行调度信息；根据下行调度信息向终端设备发送下行数据。进一步的，在本发明的一些实施例中，上述发送单元601，具体用于在物理下行控制信息PDCCH上向终端设备发送指示信息；其中，PDCCH包括多个调度单元，指示信息在PDCCH中单独占用一个调度单元；
可选的，在本发明的一些实施例中，上述发送单元601，还用于向终端设备发送下行调度信息；向终端设备发送指示信息之后，还用于根据下行调度信息向终端设备发送下行数据。进一步的，在本发明的一些实施例中，上述发送单元601，具体用于在物理下行控制信息PDCCH上向终端设备发送指示信息，PDCCH包括多个调度单元，指示信息与下行调度信息共用一个调度单元；指示信息与下行调度信息共用一个调度单元，包括：指示信息包含在下行调度信息中。
可选的，在本发明的一些实施例中，上述接收单元602，具体用于接收终端设备发送的下行反馈信息，该下行反馈信息为序列；
其中，上述下行反馈信息通过不同的序列分别表征确认ACK以及否定性 确认NACK，表征ACK的序列和NACK的序列满足互相关性和/或正交性。
可选的，在本发明的一些实施例中，指示信息还用于指示终端设备发送下行反馈信息采用的数据格式，上述接收单元602，具体用于接收终端设备按照指示信息指示的数据格式发送的下行反馈信息。
下面介绍本发明的终端设备，请参阅图8，本发明实施例终端设备的一个实施例包括：
接收单元701，用于接收基站发送的指示信息；
发送单元702，用于根据指示信息指示的目标时频资源位置，在目标时频资源位置处，向基站发送下行反馈信息，该下行反馈信息用来反馈终端设备接收到的下行数据的接收情况。
本实施例中，发送单元702发送的下行反馈信息的时频资源位置是由基站通过指示信息指示的，基站通过指示信息能够保证不同的下行数据的下行反馈信息的时频资源位置是不同的，从而避免现有技术中资源冲突的问题，因此，本发明能够保证基站正确接收终端设备发送的下行反馈信息，有效提高了下行反馈信息的传输成功率。
可选的，在本发明的一些实施例中，接收单元701接收基站发送的指示信息之前，接收单元701，还用于接收基站发送的下行调度信息；接收基站发送的下行数据，该下行数据为基站根据下行调度信息向终端设备发送的下行数据。
可选的，在本发明的一些实施例中，接收单元701接收基站发送的指示信息之后，接收单元701还用于接收基站发送的下行数据，该下行数据为基站根据下行调度信息向终端设备发送的下行数据。
需要说明的是，在本发明的一些实施例中，指示信息和下行调度信息的发送不分先后，可以在同一条消息中发送，也可以分条发送。
可选的，在本发明的一些实施例中，发送单元702，具体用于根据指示信息指示的目标时频资源位置，在目标时频资源位置处，向基站发送下行反馈信息，该下行反馈信息为序列；
其中，该下行反馈信息通过不同的序列分别表征确认ACK以及否定行确定NACK，表征ACK的序列和NACK的序列满足互相关性和/或正交性。
可选的，在本发明的一些实施例中，指示信息还用于指示终端设备发送下行反馈信息采用的数据格式，发送单元702，具体用于根据指示信息指示的目标时频资源位置以及数据格式，在目标时频资源位置处，按照上述数据格式向基站发送下行反馈信息。
为了便于理解，下面以一实际的应用场景对本发明实施例中的基站与终端设备之间单元的交互进行描述：
发送单元601在PDCCH向终端设备发送下行调度信息，按照下行调度信息中的指示，向终端设备发送下行数据，发送单元601在向终端设备发送下行数据后，向接收单元701发送指示信息，该指示信息独立占用一个调度单元，调度单元中包括时频资源位置信息、MCS信息以及CBS信息，MCS信息以及CBS信息指示发送单元702发送下行反馈信息采用的数据格式，接收单元701在接收到指示信息后，解析指示信息，发送单元702按照指示信息指示的时频资源位置以及数据格式向接收单元602反馈下行反馈信息。
本发明实施例还提供一种服务器，请参阅图9，本发明实施例中服务器的一个实施例包括：
图9是本发明实施例提供的一种服务器结构示意图，该服务器800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)801(例如，一个或一个以上处理器)，一个或一个以上存储应用程序802或数据803的存储介质804(例如一个或一个以上海量存储设备)。其中，存储介质804可以是短暂存储或持久存储。存储在存储介质804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交换机中的一系列指令操作。更进一步地，中央处理器801可以设置为与存储介质804通信，在服务器800上执行存储介质804中的一系列指令操作。
服务器800还可以包括一个或一个以上电源805，一个或一个以上有线或无线网络接口806，一个或一个以上输输出接口807，和/或，一个或一个以上操作系统808，例如Windows ServerTM，Mac OS XTM，UnixTM,LinuxTM，FreeBSDTM等等。
上述实施例中由基站所执行的步骤可以基于该图9所示的服务器结构。
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 (24)

  1. 一种下行反馈信息的传输方法，其特征在于，包括：
    基站向终端设备发送指示信息，所述指示信息用于指示目标时频资源位置，所述目标时频资源位置为所述终端设备发送下行反馈信息的时频资源位置，其中，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况；
    所述基站接收所述终端设备发送的所述下行反馈信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述基站向所述终端设备发送下行调度信息；
    所述基站向终端设备发送指示信息之后，还包括：
    所述基站根据所述下行调度信息向所述终端设备发送下行数据。
  3. 根据权利要求1所述的方法，其特征在于，所述基站向终端设备发送指示信息，包括：
    所述基站在物理下行控制信道PDCCH上向终端设备发送指示信息；
    其中，所述PDCCH包括多个调度单元，所述指示信息在所述PDCCH中单独占用一个调度单元。
  4. 根据权利要求2所述的方法，其特征在于，所述基站向终端设备发送指示信息，包括：
    所述基站在物理下行控制信道PDCCH上向终端设备发送指示信息；
    其中，所述PDCCH包括多个调度单元，所述指示信息与所述下行调度信息共用一个调度单元。
  5. 根据权利要求1所述的方法，其特征在于，所述基站向终端设备发送指示信息，之前包括：
    基站向终端设备发送下行调度信息；
    所述基站根据所述下行调度信息向所述终端设备发送下行数据。
  6. 根据权利要求1至5任意一项所述的方法，其特征在于，所述基站接收所述终端设备发送的所述下行反馈信息，包括：
    所述基站接收所述终端设备发送的所述下行反馈信息，所述下行反馈信息为序列；
    其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定性确认NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
  7. 根据权利要求1至6任意一项所述的方法，其特征在于，所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
    所述基站接收所述终端设备发送的所述下行反馈信息，包括：
    所述基站接收所述终端设备按照所述指示信息指示的数据格式发送的所述下行反馈信息。
  8. 一种下行反馈信息的传输方法，其特征在于，包括：
    终端设备接收基站发送的指示信息；
    所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收基站发送的下行调度信息；
    所述终端设备接收基站发送的指示信息之后，还包括：
    所述终端设备接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
  10. 根据权利要求8所述的方法，其特征在于，所述终端设备接收基站发送的指示信息之前，还包括：
    终端设备接收基站发送的下行调度信息；
    所述终端设备接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
  11. 根据权利要求8至10任意一项所述的方法，其特征在于，所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，包括：
    所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息为序列；
    其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定行确 定NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
  12. 根据权利要求8至11任意一项所述的方法，其特征在于，所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
    所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，包括：
    所述终端设备根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，按照所述指示信息指示的数据格式向所述基站发送下行反馈信息。
  13. 一种基站，其特征在于，包括：
    发送单元，用于向终端设备发送指示信息，所述指示信息用于指示目标时频资源位置，所述目标时频资源位置为所述终端设备发送下行反馈信息的时频资源位置，其中，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况；
    接收单元，用于接收所述终端设备发送的所述下行反馈信息。
  14. 根据权利要求13所述的基站，其特征在于，
    所述发送单元，还用于向所述终端设备发送下行调度信息；
    所述发送单元向终端设备发送指示信息之后，所述发送单元，还用于根据所述下行调度信息向所述终端设备发送下行数据。
  15. 根据权利要求13所述的基站，其特征在于，所述发送单元，具体用于在物理下行控制信道PDCCH上向终端设备发送指示信息；
    其中，所述PDCCH包括多个调度单元，所述指示信息在所述PDCCH中单独占用一个调度单元。
  16. 根据权利要求14所述的基站，其特征在于，所述发送单元，具体用于在物理下行控制信道PDCCH上向终端设备发送指示信息；
    其中，所述PDCCH包括多个调度单元，所述指示信息与所述下行调度信息共用一个调度单元。
  17. 根据权利要求13所述的基站，其特征在于，所述发送单元，还用于向终端设备发送下行调度信息；根据所述下行调度信息向所述终端设备发送下行 数据。
  18. 根据权利要求13至17任意一项所述的基站，其特征在于，所述接收单元，具体用于接收所述终端设备发送的所述下行反馈信息，所述下行反馈信息为序列；
    其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定性确认NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
  19. 根据权利要求13至18任意一项所述的基站，其特征在于，所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
    所述接收单元，具体用于接收所述终端设备按照所述指示信息指示的数据格式发送的所述下行反馈信息。
  20. 一种终端设备，其特征在于，包括：
    接收单元，用于接收基站发送的指示信息；
    发送单元，用于根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息用来反馈所述终端设备接收到的下行数据的接收情况。
  21. 根据权利要求20所述的终端设备，其特征在于，所述接收单元，还用于接收基站发送的下行调度信息；
    所述接收单元接收基站发送的指示信息之后，所述接收单元，还用于接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
  22. 根据权利要求20所述的终端设备，其特征在于，所述接收单元接收基站发送的指示信息之前，所述接收单元，还用于接收基站发送的下行调度信息；接收基站发送的下行数据，所述下行数据为所述基站根据所述下行调度信息向所述终端设备发送的下行数据。
  23. 根据权利要求20至22任意一项所述的终端设备，其特征在于，所述发送单元，具体用于根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，向所述基站发送下行反馈信息，所述下行反馈信息为序列；
    其中，所述下行反馈信息通过不同的序列分别表征确认ACK以及否定行确 定NACK，表征所述ACK的序列和所述NACK的序列满足互相关性和/或正交性。
  24. 根据权利要求20至23任意一项所述的终端设备，其特征在于，所述指示信息还用于指示所述终端设备发送所述下行反馈信息采用的数据格式；
    所述发送单元，具体用于根据所述指示信息指示的目标时频资源位置，在所述目标时频资源位置处，按照所述指示信息指示的数据格式向所述基站发送下行反馈信息。
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US20200296703A1 (en) 2020-09-17
EP4033842A1 (en) 2022-07-27
KR102410901B1 (ko) 2022-06-22

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