WO2018137664A1 - 传输方法、网络设备和终端设备 - Google Patents

传输方法、网络设备和终端设备 Download PDF

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Publication number
WO2018137664A1
WO2018137664A1 PCT/CN2018/074030 CN2018074030W WO2018137664A1 WO 2018137664 A1 WO2018137664 A1 WO 2018137664A1 CN 2018074030 W CN2018074030 W CN 2018074030W WO 2018137664 A1 WO2018137664 A1 WO 2018137664A1
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Prior art keywords
data
information
feedback information
transmission mode
time resource
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PCT/CN2018/074030
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English (en)
French (fr)
Inventor
吴艺群
徐修强
陈雁
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华为技术有限公司
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Priority to EP18744198.5A priority Critical patent/EP3553986B1/en
Priority to KR1020197023030A priority patent/KR102247385B1/ko
Publication of WO2018137664A1 publication Critical patent/WO2018137664A1/zh
Priority to US16/522,269 priority patent/US20190349146A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
    • 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
    • H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1803—Stop-and-wait protocols
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—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
    • 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
    • H04W72/20—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
    • H04L1/12—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
    • H04L1/189—Transmission or retransmission of more than one copy of a message

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a data transmission method and user equipment.
  • a scheduling/authorization (Scheduling/Grant)-based mechanism is used for uplink data transmission. Therefore, uplink data transmission is completely controlled by a base station (BS).
  • the user equipment (UE) first sends an uplink scheduling request to the BS.
  • the BS sends an uplink grant (UL Grant) to the UE to notify the uplink allocated for the UE.
  • UL Grant uplink grant
  • the transmission resource the UE sends uplink data on the allocated uplink transmission resource.
  • the above mechanism is also known as the Grant-based (GB) transport mechanism.
  • Massive Machine Type Communication is a typical application scenario of a next-generation communication network. Its typical feature is a large connection, that is, the number of UEs is large, and the service type is mainly small packet service, and the transmission delay is Certain requirements. When a large number of UEs access the wireless communication network, if the above scheduling/authorization mechanism is used, on the one hand, huge signaling transmission overhead and scheduling pressure of BS resource allocation will be caused, and on the other hand, a significant transmission delay will be caused.
  • Ultra Low Latency and Reliable Communication URLLC is another typical application scenario for next generation communication networks. For URLLC scenarios such as car networking, driverless, and industrial control, the system has high requirements for delay and reliability. In some URLLC applications, the system requires a transmission delay of less than 1 ms. The existing GB transmission mechanism cannot meet such high latency requirements.
  • the next-generation communication network may adopt a Grant-Free (GF) transmission mechanism to support massive UE access and low-latency data transmission.
  • GF Grant-Free
  • the uplink data transmission of the UE does not require dynamic and/or explicit authorization from the base station.
  • the GF transmission mechanism does not have to go through the process of sending an uplink scheduling request and waiting for receiving the base station's Grant, which greatly shortens the transmission delay, thereby satisfying the delay requirements of the mMTC scenario and the URLLC scenario.
  • the BS may pre-configure parameters of some UE uplink transmissions in a semi-static configuration manner, such as a time-frequency resource location and size that the UE may use, a Modulation and Coding Scheme (MCS), and a reference signal ( Reference Signal, RS) configuration information, etc. After the configuration is completed, the BS attempts to detect and demodulate the data transmitted by the UE at the corresponding time-frequency location.
  • MCS Modulation and Coding Scheme
  • RS Reference Signal
  • the multiple UEs may compete for the uplink data on the same time-frequency resource, thereby generating a contention conflict and reducing the reliability of the data transmission.
  • the wireless transmission is susceptible to channel fading and interference, the base station may not be able to correctly receive data transmitted by the UE.
  • the present application provides a data transmission method and user equipment, which can implement data retransmission under the GF transmission mechanism.
  • An aspect of the present invention provides a data transmission method, where the method includes:
  • the user equipment After transmitting the first data to the network device by using the unlicensed transmission mode, the user equipment monitors whether there is feedback information from the network device for the first data;
  • the user equipment determines, according to the feedback information that is monitored, a transmission mode that is used after the feedback information is monitored.
  • the user equipment transmits data according to the adopted transmission mode.
  • Another aspect of the present invention provides a user equipment, where the user equipment includes:
  • a transceiver configured to monitor, after transmitting the first data to the network device by using an unlicensed transmission mode, whether there is feedback information from the network device for the first data
  • a processor configured to determine, according to the feedback information that is monitored, a transmission mode that is used after the feedback information is monitored;
  • the transceiver is further configured to transmit data according to the adopted transmission mode
  • the technical solution provided by the embodiment of the present invention by listening to the feedback information sent by the network device for the first data transmitted by using the unlicensed transmission mode, determining the transmission mode adopted after the feedback information is monitored according to the monitored feedback information, thereby implementing The complete data retransmission mechanism under the GF transport mechanism.
  • FIG. 1 is an exemplary schematic diagram of a wireless communication system in accordance with an embodiment of the present invention
  • FIG. 2 is an exemplary flowchart of a data transmission method in accordance with an embodiment of the present invention
  • FIG. 3 is an exemplary schematic diagram of a listening time window in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of data transmission in accordance with an embodiment of the present invention.
  • FIG. 5 is still another schematic diagram of data transmission according to an embodiment of the invention.
  • FIG. 6 is still another schematic diagram of data transmission according to an embodiment of the invention.
  • FIG. 7 is a schematic diagram of an exemplary hardware structure for a device in accordance with an embodiment of the present invention.
  • a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and a computing device can be a component.
  • One or more components can reside in a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems
  • GSM Global System for Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • a user equipment may be a terminal device, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or User device.
  • the terminal device may be a station (STATION, ST) in a Wireless Local Area Networks (WLAN), and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, or a wireless local loop (Wireless Local).
  • WLAN Wireless Local Area Networks
  • SIP Session Initiation Protocol
  • PDA Personal Digital Assistant
  • handheld devices with wireless communication capabilities computing devices or other processing devices connected to wireless modems
  • in-vehicle devices wearable devices
  • next-generation communication systems For example, a terminal device in a fifth-generation (5G) network or a terminal device in a future evolved public land mobile network (PLMN) network.
  • 5G fifth-generation
  • PLMN public land mobile network
  • the terminal device may also be a wearable device.
  • a wearable device which can also be called a wearable smart device, is a general term for applying wearable technology to intelligently design and wear wearable devices such as glasses, gloves, watches, clothing, and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are more than just a hardware device, but they also implement powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-size, non-reliable smartphones for full or partial functions, such as smart watches or smart glasses, and focus on only one type of application, and need to work with other devices such as smartphones. Use, such as various smart bracelets for smart signs monitoring, smart jewelry, etc.
  • the network device may be any device capable of controlling the UE to access the communication network, such as a base station, a relay station, or an access point, in direct communication with the UE.
  • the base station may be a BTS (Base Transceiver Station) or a WCDMA (Wideband Code Division Multiple Access) in a GSM (Global System for Mobile communication) network or a CDMA (Code Division Multiple Access) network.
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System for Mobile communication
  • CDMA Code Division Multiple Access
  • NB Wideband Code Division Multiple Access
  • eNB or eNodeB evolved NodeB
  • LTE Long Term Evolution
  • 5G next generation
  • the network device provides a service for the cell
  • the terminal device communicates with the network device by using a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell
  • a transmission resource for example, a frequency domain resource, or a spectrum resource
  • the cell may be a network device.
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell, where the small cell may include: a metro cell, a micro cell, and a pico cell. (Pico cell), femto cell, etc.
  • These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.
  • the communication system 100 includes a network device 102, which may include one antenna or multiple antennas such as antennas 104, 106, 108, 110, 112, and 114.
  • network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer) , demodulator, demultiplexer or antenna, etc.).
  • Network device 102 can communicate with multiple UEs (e.g., UE 116 and UE 122). However, it will be appreciated that network device 102 can communicate with any number of UEs similar to UE 116 or UE 122.
  • UEs 116 and 122 may be, for example, cellular telephones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable device for communicating over wireless communication system 100.
  • UE 116 is in communication with antennas 112 and 114, wherein antennas 112 and 114 transmit information to UE 116 over a forward link (also referred to as downlink) 118 and through a reverse link (also known as an uplink).
  • the way 120 receives information from the UE 116.
  • UE 122 is in communication with antennas 104 and 106, wherein antennas 104 and 106 transmit information to UE 122 over forward link 124 and receive information from UE 122 over reverse link 126.
  • the forward link 118 can use a different frequency band than the reverse link 120, and the forward link 124 can be used with the reverse link. 126 uses a different frequency band.
  • FDD Frequency Division Duplex
  • the forward link 118 and the reverse link 120 can use a common frequency band, and the forward link 124 A common frequency band can be used with the reverse link 126.
  • Each antenna (or set of antennas consisting of multiple antennas) and/or regions designed for communication is referred to as a sector of network device 102.
  • the antenna group can be designed to communicate with UEs in sectors of the coverage area of network device 102.
  • a network device can transmit signals to all UEs within its corresponding sector by a single antenna or multiple antenna transmit diversity.
  • the transmit antenna of network device 102 may also utilize beamforming to improve the signal to noise ratio of forward links 118 and 124 during network device 102 communication with UEs 116 and 122 via forward links 118 and 124, respectively.
  • the neighboring cell is compared to the manner in which the network device transmits signals to all of its UEs through single antenna or multi-antenna transmit diversity. Mobile devices in the middle are subject to less interference.
  • network device 102, UE 116 or UE 122 may be a wireless communication transmitting device and/or a wireless communication receiving device.
  • the wireless communication transmitting device can encode the data for transmission.
  • the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device.
  • Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.
  • the unlicensed transmission mode means that the UE does not need authorization from the network device when transmitting data to the network device, and the authorized transmission mode refers to that the UE needs authorization from the network device when transmitting data to the network device.
  • the present invention provides a data transmission method, as shown in FIG. 2, the method includes:
  • Step S10 After transmitting the first data to the network device 102 by using the unlicensed transmission mode, the UE 116 monitors whether there is feedback information from the network device 102 for the first data.
  • the network device 102 can determine whether to the UE 116 according to whether the data transmitted by the UE 116 can be detected and whether the detected data can be correctly demodulated or decoded. Send feedback and the specific content of the feedback message.
  • the network device 102 When the network device 102 can detect the data sent by the UE 116 within a predetermined time but cannot perform correct demodulation or decoding on the detected data, the network device 102 sends feedback information to the UE 116, where the feedback information includes Instructing to retransmit the first information of the first data.
  • the first information including the indication of retransmitting the first data may be a NACK, or may be an uplink transmission grant information for the first data. Both the NACK and the uplink transmission grant information may include information indicating the number of the first data or a number of a process used to transmit the first data.
  • the uplink transmission grant information for the first data may further include information such as a time-frequency resource, a modulation and coding scheme (MCS) allocated for retransmitting the first data.
  • MCS modulation and coding scheme
  • the uplink transmission grant information may be carried in the DCI transmitted to the UE 116.
  • the second information is added to the feedback information that can be sent by the network device 102, where the second information is used to indicate that the UE UE 116 stops the transmission of data after completing the retransmission of the data by using the authorized transmission mode. Or use an unlicensed transmission method to transmit data or use an authorized transmission method to transmit data.
  • the second information may be added to the first information or may be juxtaposed with the first information in the feedback information.
  • the network device 102 When the network device 102 not only detects the data transmitted by the UE 116 within a predetermined time, but also correctly demodulates and decodes the detected data, the network device 102 sends feedback information to the UE 116, where the feedback information includes an indication.
  • the third information may be an ACK.
  • the UE 116 may monitor whether there is feedback information from the network device 102 for the first data on each TTI after the first data is sent, or may be within a predetermined listening time window. Monitor if there is any feedback.
  • FIG 3 shows an example within a predetermined time window.
  • TTIs Transmit Time Intervals
  • a row of cells indicates that the network device 102 transmits downlink control information or downlink data to the UE 116 at each TTI, where the control information is typically located at the front of each TTI.
  • the lower row indicates that the UE 116 transmits uplink data to the network device 102 at each TTI.
  • box numbered n with TB1 (GF) indicates that TB1 is transmitted in an unlicensed transmission mode within the TTI numbered n, and so on.
  • the TB1 transmitted in the TTI numbered n is the TB1 transmitted for the first time, and the TB1 transmitted in the other TTI is the TB1 retransmitted.
  • the listening time window W is three TTIs numbered n+2 to number n+4. Listening to the feedback information on the predetermined listening time window can reduce the number of times the UE listens.
  • the content of the feedback information sent by the network device 102 is different, and the content of the feedback message is different. Accordingly, the processing performed by the UE 116 is also different.
  • step S20 includes: determining, according to the feedback information, a transmission mode used in the first time resource, when the monitored feedback information includes the first information, where
  • the first time resource is a time interval between retransmission of the first data from an indication according to the first information to a next monitoring of the feedback information.
  • determining, according to the feedback information, that the transmission mode used in the first time resource comprises: when determining that the first information is uplink transmission authorization information for the first data, according to pre-storage
  • the configuration information or the second information included in the feedback information determines a transmission mode adopted in the first time resource, wherein the configuration information is used to indicate a time after the retransmission of the data is completed by using the authorized transmission mode.
  • the configuration message may be agreed by the standard, or may be a broadcast message from the network device 102, or a high layer signaling such as RRC sent from the network device 102 to the UE 116.
  • the determining, according to the pre-stored configuration information or the second information included in the feedback information, the transmission mode adopted in the first time resource includes: when the configuration information or the second information When the data transmission is stopped, the user equipment 116 does not transmit the first data or does not transmit any data in the first time resource; when the configuration information or the second information indicates that the data is transmitted by using an unauthorized transmission mode In the case of data, the UE 116 transmits the first data in an unauthorised manner within the first time resource.
  • determining, according to the feedback information, that the transmission mode used in the first time resource comprises: reconfiguring the first information when determining that the first information is uplink transmission authorization information for the first data Parameters for unlicensed transmission within the first time resource, wherein the parameters for the unlicensed transmission include a location of a time-frequency resource for grant-free transmission and/or a modulation coding scheme for grant-free transmission.
  • the method provided in this embodiment can prevent the UE 116 from being interfered by other UEs when transmitting data in an unlicensed transmission manner.
  • the UE 116 When the UE 116 does not transmit the first data or does not transmit any data within the first time resource, interference of other UEs may be reduced.
  • the network When the traffic in the communication network increases, the network may be congested, and when multiple UEs collide with each other, the configuration information or the second information may be set to indicate: the time after the retransmission of the data is completed by using the authorized transmission mode. Within the resource, no data is sent. At this time, the UE 116 does not send the first data or any data after completing the retransmission of the first data by using the authorized transmission mode until the next feedback information is received, thereby reducing the losses suffered by other UEs. interference.
  • the UE 116 continues to transmit the first data in an unlicensed manner within the first time resource, which may increase the probability of successful decoding of the network device 102.
  • the configuration information or the second information may be set to indicate that the data is transmitted by using the unlicensed transmission mode in the time resource after the retransmission of the data is completed by using the authorized transmission mode. The probability that the first data was successfully decoded at the network device 102.
  • the UE 116 determines that the transmission mode used in the first time resource includes: not in the first time resource Transmitting the first data or not transmitting any data.
  • the UE 16 determines that the transmission mode adopted after the feedback information is monitored is: the first available after the feedback information is monitored. Within the time resource, the second data is transmitted or not transmitted using an unlicensed transmission.
  • the user equipment transmits the first data by using an unlicensed transmission mode, where the second time resource is transmitted to the network device for the first time in an unlicensed transmission mode.
  • the time interval between the first data and the first time the feedback information is monitored.
  • the solution of this embodiment may increase the probability that the first data is successfully decoded by the network device 102.
  • the UE 116 further reports the receiving capability of the user equipment to the network device 102 before the UE 116 first transmits the first data to the network device 102 by using the unlicensed transmission mode.
  • Different UEs may have different receiving capabilities. For example, some UEs work in full-duplex mode, and can receive ACK/NACK and uplink transmission grant information sent by network device 102 while transmitting data; some UEs work in half-duplex In the mode, the ACK/NACK or uplink transmission grant information sent by the network device 102 cannot be received while the data is being transmitted; while the UE works in the full-duplex mode, it can only receive ACK/NACK while transmitting data. Unable to receive upstream transmission authorization information. Therefore, the UE needs to report its own receiving capability to the network device 102, so that the network device 102 adopts a message that can be recognized by the UE to implement the first information.
  • Step S30 The UE 116 transmits data according to the transmission mode determined in step S20.
  • FIG. 4 illustrates an example of data transfer provided by the method provided by the embodiment of FIG. 2.
  • the UE 116 uses a plurality of parallel Hybrid Automatic Repeat ReQuest (HARQ) processes when transmitting data to the network device 102, and each HARQ process processes the transport block in a stop mode.
  • TB that is, after transmitting one TB, stop and wait for the corresponding ACK/NACK response, and after receiving the ACK response, the next TB can be transmitted, and after receiving the NACK response, the TB is retransmitted.
  • FIG. 4 shows an example in which the scheme provided by the embodiment shown in FIG. 2 is applied to a specific HARQ process. As shown in FIG.
  • the grid of the row of the DL indicates that the network device 102 transmits downlink control information or downlink data to the UE 116 at each TTI, where the control information is usually located in each TTI.
  • the grid of the row where the UL is located indicates that the UE 116 transmits uplink data to the network device 102 at each TTI.
  • the UE 116 transmits TB1 for the first time in the TTI numbered n in the GF transmission mode, and then monitors whether there is feedback information from the network device 102 for the TB1 from the time slot numbered n+1.
  • the network device 102 detects that the UE 116 has transmitted data but does not successfully demodulate the detected data in the TTI of the number n, so that the feedback information is sent to the UE 116 in the TTI numbered n+1, and the feedback information is specifically the uplink for the TB1.
  • Transfer authorization information (UL Grant for TB1).
  • the UE 116 After listening to the feedback information in the TTI numbered n+1, the UE 116 determines that the feedback information is the uplink grant authorization information (UL Grant for TB1) for TB1, and then considers that the TB1 needs to be retransmitted, so that the number is n+2.
  • TB1 is transmitted in the manner specified by the uplink transmission grant information. Since the transmission of TB1 in the TTI numbered n+2 is specified by the uplink transmission grant information transmitted by the network device, the manner of transmitting TB1 in the TTI numbered n+2 is the authorized transmission mode.
  • the UE 116 determines which transmission mode to use to transmit data based on the configuration information.
  • the configuration information indicates that the transmission mode adopted is: the data is transmitted by using the GF transmission mode. Therefore, the HARQ process of the UE 116 uses the GF transmission in two TTIs numbered n+3 and n+4. The mode transmits TB1.
  • the HARQ process of the UE 116 does not transmit any data within the two TTIs numbered n+3 and n+4, as shown in FIG.
  • the HARQ process of the transmission TB1 of the UE 116 is determined according to the second information instead of being determined according to the configuration information at the numbers n+3 and n.
  • the transmission mode used in the two TTIs of +4 is to continue to transmit TB1 or not to transmit data using GF transmission.
  • the network device 102 sends all
  • the HARQ process transmitting TB1 completes the authorized transmission of TB1 according to the uplink transmission grant information, and the UE 116 according to the second information or configuration mentioned in the foregoing.
  • the information determines the transmission mode adopted by the HARQ process transmitting the TB1 and the HARQ process transmitting the TB2 after the authorized transmission of the TB1 is completed.
  • the UE 116 determines that the HARQ process of the TB1 and the transmission of the TB2 are transmitted after the authorized transmission of the TB1 is completed.
  • the transmission mode adopted by the HARQ process is that neither the HARQ process transmitting TB1 nor the HARQ process transmitting TB2 transmits data.
  • the UE 116 determines that the HARQ process and transmission of the TB1 are transmitted after the authorized transmission of the TB1 is completed.
  • the transmission mode adopted by the TB2 HARQ process is that the HARQ process transmitting TB1 transmits TB1 by using the GF transmission mode, and the HARQ process transmitting TB2 does not change the current transmission mode.
  • the embodiment of the present invention further provides a user equipment, as shown in FIG. 7, the user equipment includes: a transceiver 10 and a processor 20.
  • the transceiver 10 is configured to monitor whether there is feedback information from the network device for the first data after transmitting the first data to the network device by using an unlicensed transmission mode;
  • the processor 20 is configured to determine, according to the monitored feedback information, a transmission mode that is used after the feedback information is monitored.
  • the processor 20 determines, according to the monitored feedback information, that the transmission mode adopted after the feedback information is monitored includes:
  • Determining that the monitored feedback information includes first information indicating that the first data is retransmitted, and determining, according to the feedback information, a transmission mode used in a first time resource, where the first time resource a time interval between retransmission of the first data from an indication according to the first information to a next monitoring of the feedback information.
  • the communication device shown in FIG. 7 performs the method provided by the embodiment shown in FIG. 2.
  • the transceiver 10 performs step S10 and step S30 in the embodiment shown in FIG.
  • the device 20 performs the step S20 in the embodiment of FIG. 2. Therefore, more details of the above-mentioned steps of the transceiver 10 and the processor 20 can be referred to the related description in the embodiment shown in FIG. 2, and details are not described herein again.
  • the processor 20 may be a general-purpose processor, such as but not limited to a central processing unit (CPU), or may be a dedicated processor such as, but not limited to, a digital signal processor (Digital) Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), and Field Programmable Gate Array (FPGA).
  • processor 10 can also be a combination of multiple processors.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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Abstract

提供了一种数据传输的方法和用户设备，其中，所述方法包括：用户设备在采用免授权传输方式向网络设备传输第一数据后，监听是否有来自所述网络设备针对所述第一数据的反馈信息；所述用户设备根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式；所述用户设备根据所述所采用的传输模式传输数据。

Description

传输方法、网络设备和终端设备
本申请要求于2017年01月26日提交中国专利局、申请号为201710061853.X、申请名称为“一种数据传输的方法和用户设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明是涉及无线通信领域，尤其涉及一种数据传输的方法和用户设备。
背景技术
在现有的无线通信网络(例如Long Term Evolution,LTE)中，采用基于调度/授权(Scheduling/Grant)的机制进行上行数据传输，因此，上行数据传输完全受基站(Base Station,BS)控制。在该机制中，用户设备(User Equipment,UE)首先向BS发出上行调度请求，当BS接收到该请求后，向UE发出上行授权(Up Link Grant,UL Grant)以通知为该UE分配的上行传输资源，UE在分配的上行传输资源上发送上行数据。上述机制也被称为授权(Grant-based,GB)传输机制。
大规模机器类型通信(Massive Machine Type Communication,mMTC)是下一代通信网络的典型应用场景，其典型特征是大连接，即UE数量庞大，业务类型以小数据包业务为主，对传输时延有一定的要求。当海量UE接入无线通信网络时，如果沿用上述调度/授权机制，一方面将导致巨大的信令传输开销以及BS资源分配的调度压力，另一方面将造成显著的传输时延。低延时高可靠通信(Ultra Low Latency and Reliable Communication,URLLC)是下一代通信网络的另一典型应用场景。对车联网、无人驾驶、工业控制等URLLC场景来说，***对于时延和可靠性却有着很高的要求。在某些URLLC的应用场景中，***要求传输时延小于1ms，现有的GB传输机制是无法满足如此高的时延要求。
鉴于此，下一代通信网络为支撑海量UE接入和低时延的数据传输，可能采用免授权(Grant-Free,GF)传输机制。在GF传输机制中，UE的上行数据传输并不需要得到来自基站的动态和/或明确的授权。GF传输机制相比于GB传输机制，不必经过发送上行调度请求和等待接收基站的Grant这一过程，大大缩短了传输时延，从而满足了mMTC场景和URLLC场景在延时方面的需求。
为支持GF传输机制，BS可能通过半静态配置的方式预先配置一些UE上行传输的参数，例如UE可能使用的时频资源位置和大小、调制编码方式(Modulation and Coding Scheme,MCS)、参考信号(Reference Signal,RS)配置信息等。完成配置后，BS在对应的时频位置尝试检测并解调UE发送的数据。
在GF传输机制中，由于UE在发送上行数据时不需要得到基站的Grant，那么多个UE可能在同一时频资源上竞争传输上行数据，从而产生竞争冲突，降低数据传输的可靠性。另外，由于无线传输易受信道衰落和干扰的影响，导致基站可能无法正确接收UE发 送的数据。
为提高GF传输机制下的数据传输的可靠性，可以使用数据重传技术。但是，现有技术中缺乏在GF传输机制下如何实现数据重传的解决方案。
发明内容
有鉴于此，本申请提供了一种数据传输的方法和用户设备，可以在GF传输机制下实现数据重传。本发明实施例的一方面，提供了一种数据传输方法，其特征在于，所述方法包括：
用户设备在采用免授权传输方式向网络设备传输第一数据后，监听是否有来自所述网络设备针对所述第一数据的反馈信息；
所述用户设备根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式。
所述用户设备根据所述所采用的传输模式传输数据。
本发明实施例的另一方面，提供了一种用户设备，其特征在于，所述用户设备包括：
收发器，用于在采用免授权传输方式向网络设备传输第一数据后，监听是否有来自所述网络设备针对所述第一数据的反馈信息；
处理器，用于根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式；
所述收发器还用于根据所述所采用的传输模式传输数据
本发明实施例提供的技术方案通过监听网络设备发送的针对采用免授权传输方式传输的第一数据的反馈信息，根据监听到的反馈信息，确定在监听到反馈信息之后采取的传输模式，从而实现了GF传输机制下的完整的数据重传机制。
附图说明
图1是依照本发明一实施例的无线通信***的示范性示意图；
图2是依照本发明一实施例的数据传输方法的示范性流程图；
图3是依照本发明一实施例的监听时间窗口的示范性示意图；
图4是依照本发明一实施例的数据传输的示意图；
图5是依照本发明一实施例的数据传输的又一示意图；
图6是依照本发明一实施例的数据传输的再一示意图；
图7是依照本发明一实施例的用于设备的示范性硬件结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本说明书中使用的术语“部件”、“模块”、“***”、“单元”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部 件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地***、分布式***和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它***交互的互联网)的信号通过本地和/或远程进程来通信。
应理解，本申请实施例可以应用于各种通信***，例如：全球移动通讯(Global System for Mobile communication，GSM)***、码分多址(Code Division Multiple Access，CDMA)***、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)***、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)***、先进的长期演进(Advanced long term evolution，LTE-A)***、通用移动通信***(Universal Mobile Telecommunication System，UMTS)或下一代通信***等。
本申请实施例结合终端设备描述了各个实施例。用户设备(User Equipment，UE)可以为终端设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备可以是无线局域网(Wireless Local Area Networks，WLAN)中的站点(STATION，ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及下一代通信***，例如，第五代通信(fifth-generation，5G)网络中的终端设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，本申请实施例结合网络设备描述了各个实施例。网络设备可以是能和UE直接通信的用于控制UE接入通信网络的任何设备，例如，基站、中继站或接入点。基站可以是GSM(Global System for Mobile communication，全球移动通讯)网络或CDMA(Code Division Multiple Access，码分多址)网络中的BTS(Base Transceiver Station，基站收发台)、WCDMA(Wideband Code Division Multiple Access，宽带码分多址)网络中的NB(NodeB)、LTE(Long Term Evolution，长期演进)中的eNB或eNodeB(evolved NodeB)、或者下一代(例如5G)无线通信网络中的基站设备等网络设备。
另外，在本申请实施例中，网络设备为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(small cell)对 应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
图1是本申请实施例的无线通信***的示意图。如图1所示，该通信***100包括网络设备102，网络设备102可包括1个天线或多个天线例如，天线104、106、108、110、112和114。另外，网络设备102可附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。
网络设备102可以与多个UE(例如UE116和UE122)通信。然而，可以理解，网络设备102可以与类似于UE116或UE122的任意数目的UE通信。UE116和122可以是例如蜂窝电话、智能电话、便携式电脑、手持通信设备、手持计算设备、卫星无线电装置、全球定位***、PDA和/或用于在无线通信***100上通信的任意其它适合设备。
如图1所示，UE116与天线112和114通信，其中天线112和114通过前向链路(也称为下行链路)118向UE116发送信息，并通过反向链路(也称为上行链路)120从UE116接收信息。此外，UE122与天线104和106通信，其中天线104和106通过前向链路124向UE122发送信息，并通过反向链路126从UE122接收信息。
例如，在频分双工(Frequency Division Duplex，简称“FDD”)***中，例如，前向链路118可与反向链路120使用不同的频带，前向链路124可与反向链路126使用不同的频带。
再例如，在时分双工(Time Division Duplex，简称“TDD”)***和全双工(Full Duplex)***中，前向链路118和反向链路120可使用共同频带，前向链路124和反向链路126可使用共同频带。
被设计用于通信的每个天线(或者由多个天线组成的天线组)和/或区域称为网络设备102的扇区。例如，可将天线组设计为与网络设备102覆盖区域的扇区中的UE通信。网络设备可以通过单个天线或多天线发射分集向其对应的扇区内所有的UE发送信号。在网络设备102通过前向链路118和124分别与UE116和122进行通信的过程中，网络设备102的发射天线也可利用波束成形来改善前向链路118和124的信噪比。此外，与网络设备通过单个天线或多天线发射分集向它所有的UE发送信号的方式相比，在网络设备102利用波束成形向相关覆盖区域中随机分散的UE116和122发送信号时，相邻小区中的移动设备会受到较少的干扰。
在给定时间，网络设备102、UE116或UE122可以是无线通信发送装置和/或无线通信接收装置。当发送数据时，无线通信发送装置可对数据进行编码以用于传输。具体地，无线通信发送装置可获取(例如生成、从其它通信装置接收、或在存储器中保存等)要通过信道发送至无线通信接收装置的一定数目的数据比特。这种数据比特可包含在数据的传输块(或多个传输块)中，传输块可被分段以产生多个码块。
在本申请实施例中，免授权传输方式是指UE向网络设备传输数据时不需要来自网络设备的授权，授权传输方式是指UE向网络设备传输数据时需要来自网络设备的授权。
由于在GF传输机制中，不同终端发送的数据很容易在网络设备处发生碰撞，从而降低了数据传输的可靠性。为提高GF传输机制中的数据传输的可靠性，可以使用数据重传 技术。但是，现有技术中缺乏在GF传输机制下如何实现数据重传的解决方案。因此，亟需一种实现数据重传的技术方案，其能被应用到GF传输机制中，以提高GF传输机制中数据传输的可靠性。
为此，本发明实施提供一种数据传输方法，如图2所示，该方法包括：
步骤S10，UE116在采用免授权传输方式向网络设备102传输第一数据后，监听是否有来自网络设备102针对所述第一数据的反馈信息。
UE116在采用免授权方式向网络设备102首次传输第一数据之后，网络设备102可以根据能否检测到UE116发送的数据以及能否对检测到的数据进行正确解调或者译码，决定是否向UE116发送反馈信息，以及反馈消息的具体内容。
当网络设备102在预定的时间内检测不到UE116发送的数据时，不发送任何反馈信息。
当网络设备102在预定的时间内能检测到UE116发送的数据但不能对该检测到的数据进行无法进行正确的解调或者译码时，网络设备102向UE116发送反馈信息，该反馈信息中包含指示重新传输所述第一数据的第一信息。在一具体的实施中，包含指示重新传输所述第一数据的第一信息可以是NACK，也可以是针对所述第一数据的上行传输授权信息。NACK和上行传输授权信息均可以包含指示所述第一数据的编号的信息或者传输所述第一数据所使用的进程的编号。针对所述第一数据的上行传输授权信息还可以包括为重新传输所述第一数据所分配的时频资源，调制编码方案(Modulation and Coding Scheme，MCS)等信息。上行传输授权信息可以被携带在发送给UE116的DCI中。在本实施方式中，网络设备102还可以发送的反馈信息中添加第二信息，该第二信息用于指示UE UE116在采用授权传输方式完成一次数据的重新传输之后的时间资源内：停止传输数据，或者采用免授权传输方式传输数据，或者采用授权传输方式传输数据。第二信息可以被添加到所述第一信息中，也可以和第一信息一起并列包含在所述反馈信息中。
当网络设备102在预定的时间内不仅检测到UE116发送的数据，而且还能对检测到的数据进行正确的解调和译码时，网络设备102向UE116发送反馈信息，该反馈信息中包含指示所述第一数据已被正确接收的第三信息。在一具体实施方式中，第三信息可以是ACK。
UE116为了获得针对第一数据的反馈信息，可以在发送完第一数据之后的每个TTI上监听是否有来自网络设备102针对所述第一数据的反馈信息，也可以在预定的监听时间窗口内监听是否有所述反馈信息。
图3示出了预定的时间窗内的一个例子。在图3中，有七个传输时间间隔(Transmit Time Interval，TTI)，其编号分别为n，n+1，n+2，n+3，n+4，n+5，n+6，上面一行格子表示网络设备102在各TTI向UE116发送下行控制信息或下行数据，其中控制信息通常位于每个TTI的前部。下面一行表示UE116在各TTI向网络设备102发送上行数据。，其中，带有TB1(GF)的编号为n的框表示在编号为n的TTI内采用免授权传输方式传输TB1，其它的依次类推。在编号为n的TTI传输的TB1是首次传输的TB1，其它TTI内传输的TB1是重传的TB1。监听时间窗口W是从编号为n+2到编号为n+4的三个TTI。在预定的监听时间窗口上监听反馈信息，可以减少UE监听的次数。
步骤S20，UE116根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采 用的传输模式。
从上文可知，网络设备102发送的反馈信息的内容有多种，而反馈消息的内容不同，相应地，UE116所执行的处理也不同。
在一具体的实施方式中，步骤S20包括：当所述监听到的所述反馈信息包含第一信息时，根据所述反馈信息确定在第一时间资源内所采用的传输模式，其中，所述第一时间资源为从根据所述第一信息的指示重新传输完所述第一数据到下一次监听到所述反馈信息之间的时间间隔。
在一具体的实施方式中，根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：当确定所述第一信息是NACK时，确定在第一时间资源内所采用的传输模式为：在所述第一时间资源内采用免授权传输方式传输所述第一数据。
在另一实施方式中，根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：当确定所述第一信息是针对所述第一数据的上行传输授权信息时，根据预先存储的配置信息或者所述反馈信息中包含的第二信息确定在第一时间资源内所采用的传输模式，其中，所述配置信息用于指示在采用授权传输方式完成一次数据的重新传输之后的时间资源内：停止传输数据，或者采用免授权传输方式传输数据，或者采用授权传输方式传输数据。配置消息可以是由标准约定的，也可以来自网络设备102的广播消息，或者来自网络设备102发送给UE116的RRC等高层信令。
在一实施方式中，所述根据预先存储的配置信息或者所述反馈信息中包含的第二信息确定在第一时间资源内所采用的传输模式包括：当所述配置信息或者所述第二信息指示停止传输数据时，所述用户设备116在所述第一时间资源内不传输所述第一数据或者不传输任何数据；当所述配置信息或者所述第二信息指示采用免授权传输方式传输数据时，所述UE116在所述第一时间资源内采用免授权方式传输第一数据。
在一实施方式中，根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：当确定所述第一信息是针对所述第一数据的上行传输授权信息时，重新配置所述第一时间资源内用于免授权传输的参数，其中，所述用于免授权传输的参数包括用于免授权传输的时频资源的位置和/或用于免授权传输的调制编码方式。本实施方式所提供的方法，可以避免UE116后续采用免授权传输方式传输数据时受到其它UE的干扰。
UE116在所述第一时间资源内不传输所述第一数据或者不传输任何数据时，可以减少对其它UE的干扰。当通信网络中业务量增加，网络可能出现拥塞，出现多个UE相互干扰碰撞的情况下，可以将配置信息或第二信息设置成指示：在采用授权传输方式完成一次数据的重新传输之后的时间资源内，不发送任何数据，此时UE116在采用授权传输方式完成第一数据的一次重新传输之后到下一次收到反馈信息之前，不发送第一数据或者任何数据，就降低其他UE所遭受的干扰。
UE116在所述第一时间资源内采用免授权方式继续传输第一数据，可以增加网络设备102的成功译码的概率。UE116位于小区边缘时，可以将配置信息或第二信息设置成指示：在采用授权传输方式完成一次数据的重新传输之后的时间资源内，采用免授权传输方式传输数据，此时可以增加UE116发送的第一数据在网络设备102处被成功译码的概率。
在一实施方式中，当所述第一信息是针对所述第一数据的上行传输授权信息时，UE116确定在第一时间资源内所采用的传输模式包括：在所述第一时间资源内不传输所述 第一数据或者不传输任何数据。
在一实施方式中，当所述反馈信息包含指示所述第三信息，UE16确定在监听到所述反馈信息之后所采用的传输模式为：在监听到所述反馈信息之后的第一个可用的时间资源内，采用免授权传输方式传输第二数据或者不传输数据。
在一实施方式中，在第二时间资源内，所述用户设备采用非授权传输方式传输所述第一数据，其中，所述第二时间资源为在采用免授权传输方式向网络设备首次传输完所述第一数据到首次监听到所述反馈信息之间的时间间隔。本实施方式的方案可以增加第一数据被网络设备102成功译码的概率。
在一实施方式中，在所述UE116采用免授权传输方式向网络设备102首次传输所述第一数据之前，所述UE116还进一步向所述网络设备102上报所述用户设备的接收能力。不同的UE可能具有不同的接收能力，例如，有的UE工作在全双工模式，在发送数据的同时能接收网络设备102发送的ACK/NACK和上行传输授权信息；有的UE工作在半双工模式，在发送数据的同时不能接收网络设备102下发的ACK/NACK或上行传输授权信息；还有的UE虽然工作在全双工模式，但在发送数据的同时只能够接收ACK/NACK而无法接收上行传输授权信息。因此，UE需要上报自己的接收能力给网络设备102，以便网络设备102采取能被UE识别的消息来实现第一信息。
步骤S30：UE116根据步骤S20中确定的传输模式传输数据。
图4-6示出了图2所示实施例提供的方法进行数据传输的实例。在这些实例中，UE116向网络设备102发送数据时采用了多个并行的混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)进程，每个HARQ进程采用停等的方式处理传输块(Transport Block,TB)，即传输完一个TB后，停下来等对应的ACK/NACK应答，收到ACK应答后则可传递下一个TB，收到NACK应答后则重传该TB。图4示出了图2所示实施例提供的方案应用到某个特定的HARQ进程的实例。如图4所示，有9个TTI，编号从n到n+8，DL所在行的格子表示网络设备102在各TTI向UE116发送下行控制信息或下行数据，其中控制信息通常位于每个TTI的前部，UL所在行的格子表示UE116在各TTI向网络设备102发送上行数据。
如图4所示，UE116在编号为n的TTI中采用GF传输方式首次传输TB1，然后从编号为n+1的时隙开始监听是否有来自网络设备102发送的针对TB1的反馈信息。网络设备102在编号为n的TTI中检测到UE116有传输数据但未成功解调检测到的数据，于是在编号为n+1的TTI中向UE116发送反馈信息，反馈信息具体为针对TB1的上行传输授权信息(UL Grant for TB1)。UE116在编号为n+1的TTI内监听到所述反馈信息后，确定反馈信息是针对TB1的上行传输授权信息(UL Grant for TB1)，于是认为需要重新传输TB1，于是在编号为n+2的TTI内按照上行传输授权信息所指定的方式传输TB1。因为在编号为n+2的TTI内如何传输TB1是由网络设备发送的上行传输授权信息所指定的，因此，在编号为n+2的TTI内传输TB1的方式就是授权传输方式。在第一时间资源(从编号为n+3的TTI到编号为n+4的TTI)内，UE116根据配置信息确定采用何种传输模式传输数据。在图4所示的实例中，配置信息指示采用的传输模式为：采用GF传输方式传输数据，因此，UE116的该HARQ进程在编号为n+3和n+4的两个TTI内采用GF传输方式传输TB1。当配置信息指示采用的传输模式为不发送数据时，UE116的该HARQ进 程在编号为n+3和n+4的两个TTI内不发送任何数据，如图5所示。
在图4所示的实例中，如果网络设备102发送的反馈信息中包含第二信息，UE116的传输TB1的HARQ进程是根据该第二信息而不是根据配置信息确定在编号为n+3和n+4的两个TTI内所采用的传输模式是采用GF传输方式继续传输TB1还是不传输数据。
可以理解的是，在图4和图5所示的实例中，网络设备102发送的都是
在图6所示的实例中，在收到针对TB1的上行传输授权信息后，传输TB1的HARQ进程根据上行传输授权信息完成TB1的授权传输，并UE116根据前文中提到的第二信息或者配置信息，确定TB1的授权传输完成之后传输TB1的HARQ进程和传输TB2的HARQ进程所采取的传输模式。
当所述配置信息或者第二信息指示在采用授权传输方式完成一次数据的重新传输之后的时间资源内：停止传输数据，则UE116确定在TB1的授权传输完成之后传输TB1的HARQ进程和传输TB2的HARQ进程所采取的传输模式为：传输TB1的HARQ进程和传输TB2的HARQ进程均不发送数据。
当所述配置信息或者第二信息指示在采用授权传输方式完成一次数据的重新传输之后的时间资源内：采用GF传输方式传输数据，UE116确定在TB1的授权传输完成之后传输TB1的HARQ进程和传输TB2的HARQ进程所采取的传输模式为：传输TB1的HARQ进程采用GF传输方式传输TB1，传输TB2的HARQ进程不改变当前的传输模式。
本发明实施例还提供一种用户设备，如图7所示，所述用户设备包括：收发器10和处理器20.
收发器10，用于在采用免授权传输方式向网络设备传输第一数据后，监听是否有来自所述网络设备针对所述第一数据的反馈信息；
处理器20，用于根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式。
在一实施方式中，处理器20根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式包括：
确定所述监听到的所述反馈信息包含指示重新传输所述第一数据的第一信息，根据所述反馈信息确定在第一时间资源内所采用的传输模式，其中，所述第一时间资源为从根据所述第一信息的指示重新传输完所述第一数据到下一次监听到所述反馈信息之间的时间间隔。
从上述实施例可以看出，图7所示的通信设备执行的是图2所示实施例提供的方法，具体地，收发器10执行图2所示实施例中的步骤S10和步骤S30，处理器20执行图2实施例中的步骤S20，因此，收发器10和处理器20执行上述步骤时的更多细节可以参考图2所示实施例中的相关描述，此处不再赘述了。
在本发明实施例中，处理器20可以是通用处理器，例如但不限于，中央处理器(Central Processing Unit，CPU)，也可以是专用处理器，例如但不限于，数字信号处理器(Digital Signal Processor，DSP)、应用专用集成电路(Application Specific Integrated Circuit，ASIC)和现场可编程门阵列(Field Programmable Gate Array，FPGA)等。此外，处理器10还可以是多个处理器的组合。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。 当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。

Claims (22)

  1. 一种数据传输方法，其特征在于，所述方法包括：
    用户设备在采用免授权传输方式向网络设备传输第一数据后，监听是否有来自所述网络设备针对所述第一数据的反馈信息；
    所述用户设备根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式；
    所述用户设备根据所述所采用的传输模式传输数据。
  2. 如权利要求1所述的方法，其特征在于，所述用户设备根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式包括：
    确定所述监听到的所述反馈信息包含指示重新传输所述第一数据的第一信息，根据所述反馈信息确定在第一时间资源内所采用的传输模式，其中，所述第一时间资源为从根据所述第一信息的指示重新传输完所述第一数据到下一次监听到所述反馈信息之间的时间间隔。
  3. 如权利要求2所述的方法，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是NACK时，确定在第一时间资源内所采用的传输模式为：在所述第一时间资源内采用免授权传输方式传输所述第一数据。
  4. 如权利要求2或3所述的方法，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是针对所述第一数据的上行传输授权信息时，根据预先存储的配置信息或者所述反馈信息中包含的第二信息确定在第一时间资源内所采用的传输模式，其中，所述配置信息或者所述第二信息均用于指示在采用授权传输方式完成一次数据的重新传输之后的时间资源内：停止传输数据，或者采用免授权传输方式传输数据，或者采用授权传输方式传输数据。
  5. 如权利要求4所述的方法，其特征在于，所述根据预先存储的配置信息或者所述反馈信息中包含的第二信息确定在第一时间资源内所采用的传输模式包括：
    当所述配置信息或者所述第二信息指示停止传输数据时，所述用户设备在所述第一时间资源内不传输所述第一数据或者不传输任何数据；
    当所述所述配置信息或者所述第二信息指示采用免授权传输方式传输数据时，所述用户设备在所述第一时间资源内采用免授权方式传输第一数据。
  6. 如权利要求2或3所述的方法，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是针对所述第一数据的上行传输授权信息时，在所述第一时间资源内不传输所述第一数据或者不传输任何数据。
  7. 如权利要求1到6任一项所述的方法，其特征在于，所述用户设备根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式包括：
    当所述反馈信息包含指示所述第一数据已被正确接收的第三信息，在监听到所述反馈 信息之后的第一个可用的时间资源内，采用免授权传输方式传输第二数据或者不传输数据。
  8. 如权利要求1到7任一项所述的方法，其特征在于，所述监听是否有来自所述网络设备针对所述第一数据的反馈信息包括：
    在预定的时间窗口监听是否有来自所述网络设备针对所述第一数据的反馈信息。
  9. 如权利要求1到8任一项所述的方法，其特征在于，所述方法还包括：
    在第二时间资源内，所述用户设备采用非授权传输方式传输所述第一数据，其中，所述第二时间资源为在采用免授权传输方式向网络设备传输完所述第一数据到首次监听到所述反馈信息之间的时间间隔。
  10. 如权利要求1到9任一项所述的方法，其特征在于，所述方法还包括：
    在所述用户设备采用免授权传输方式向网络设备传输所述第一数据之前，所述用户设备还进一步向所述网络设备上报所述用户设备的接收能力。
  11. 如权利要求2或3所述的方法，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是针对所述第一数据的上行传输授权信息时，重新配置所述第一时间资源内用于免授权传输的参数，其中，所述用于免授权传输的参数包括用于免授权传输的时频资源的位置和/或用于免授权传输的调制编码方式。
  12. 一种用户设备，其特征在于，所述用户设备包括：
    收发器，用于在采用免授权传输方式向网络设备传输第一数据后，监听是否有来自所述网络设备针对所述第一数据的反馈信息；
    处理器，用于根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式；
    所述收发器还用于根据所述所采用的传输模式传输数据。
  13. 如权利要求12所述的用户设备，其特征在于，所述根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式包括：
    确定所述监听到的所述反馈信息包含指示重新传输所述第一数据的第一信息，根据所述反馈信息确定在第一时间资源内所采用的传输模式，其中，所述第一时间资源为从根据所述第一信息的指示重新传输完所述第一数据到下一次监听到所述反馈信息之间的时间间隔。
  14. 如权利要求13所述的用户设备，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是NACK时，确定在第一时间资源内所采用的传输模式为：在所述第一时间资源内采用免授权传输方式传输所述第一数据。
  15. 如权利要求13或14所述的用户设备，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是针对所述第一数据的上行传输授权信息时，根据配置信息或者所述反馈信息中包含的第二信息确定在第一时间资源内所采用的传输模式，其中，所述配置信息或者所述第二信息均用于指示在采用授权传输方式完成一次数据的重新传输之后的时间资源内：停止传输数据，或者采用免授权传输方式传输数据，或者采用授权传输方 式传输数据。
  16. 如权利要求15所述的用户设备，其特征在于，所述根据配置信息或者所述反馈信息中包含的第二信息确定在第一时间资源内所采用的传输模式包括：
    当所述所述配置信息或者所述第二信息指示停止传输数据时，在所述第一时间资源内不传输所述第一数据或者不传输任何数据；
    当所述所述配置信息或者所述第二信息指示采用免授权传输方式传输数据时，在所述第一时间资源内采用免授权方式传输第一数据。
  17. 如权利要求13或14所述的用户设备，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是针对所述第一数据的上行传输授权信息时，在所述第一时间资源内不传输所述第一数据或者不传输任何数据。
  18. 如权利要求12到17任一项所述的用户设备，其特征在于，所述根据监听到的所述反馈信息，确定在监听到所述反馈信息之后所采用的传输模式包括：
    当所述反馈信息包含指示所述第一数据已被正确接收的第三信息，在监听到所述反馈信息之后的第一个可用的时间资源内，采用免授权传输方式传输第二数据或者不传输数据。
  19. 如权利要求12到18任一项所述的用户设备，其特征在于，所述收发器具体用于：
    在预定的时间窗口监听是否有来自所述网络设备针对所述第一数据的反馈信息。
  20. 如权利要求12到19任一项所述的用户设备，其特征在于，所述收发器还用于：
    在第二时间资源内，采用非授权传输方式传输所述第一数据，其中，所述第二时间资源为在采用免授权传输方式向所述网络设备首次传输完所述第一数据到首次监听到所述反馈信息之间的时间间隔。
  21. 如权利要求12到20任一项所述的用户设备，其特征在于，所述收发器还用于：
    在所述用户设备采用免授权传输方式向网络设备首次传输所述第一数据之前，向所述网络设备发送所述用户设备的接收能力信息。
  22. 如权利要求13到14任一项所述的用户设备，其特征在于，所述根据所述反馈信息确定在第一时间资源内所采用的传输模式包括：
    当确定所述第一信息是针对所述第一数据的上行传输授权信息时，重新配置所述第一时间资源内用于免授权传输的参数，其中，所述用于免授权传输的参数包括用于免授权传输的时频资源的位置和/或用于免授权传输的调制编码方式。
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