WO2013044880A1 - 一种数据传输方法和装置 - Google Patents

一种数据传输方法和装置 Download PDF

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Publication number
WO2013044880A1
WO2013044880A1 PCT/CN2012/082542 CN2012082542W WO2013044880A1 WO 2013044880 A1 WO2013044880 A1 WO 2013044880A1 CN 2012082542 W CN2012082542 W CN 2012082542W WO 2013044880 A1 WO2013044880 A1 WO 2013044880A1
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WO
WIPO (PCT)
Prior art keywords
radio frame
uplink
subframe
downlink
data transmission
Prior art date
Application number
PCT/CN2012/082542
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English (en)
French (fr)
Inventor
陈小波
李洋
李超君
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2013044880A1 publication Critical patent/WO2013044880A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1854Scheduling and prioritising arrangements

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • HARQ Hybrid Automatic Repeat Request
  • FEC Forward Error Correction Coding
  • ARQ Automatic Repeat ReQuest
  • the main implementation process of HARQ includes: The sender sends new data, the receiver buffers the received data and performs decoding verification, and sends feedback information (ACK) or non-determination (NACK) to the sender according to the check result. If the sender receives the determined feedback information, it starts to send new data. If the sender receives non-deterministic feedback information, it indicates that the sender sends data error, the sender needs to resend the last error data, and the receiver uses the receiver. The retransmitted data and the last error data in the cache are combined and decoded to solve the correct data.
  • ACK feedback information
  • NACK non-determination
  • a radio frame length is 10 ms (milliseconds), which includes 10 subframes, each subframe is lms in length, and the subframe used for uplink data transmission is called
  • the uplink subframe is represented by the symbol U.
  • the subframe used for downlink data transmission is called a downlink subframe, and is represented by a symbol D.
  • the sub-frame is indicated by the symbol S.
  • the LTE TDD system mode supports multiple uplink and downlink ratios.
  • the network device can send downlink data packets to the user equipment.
  • the user equipment can send uplink data packets to the network device.
  • the network device can send a downlink packet to the user equipment.
  • an embodiment of the present invention provides a data transmission method, including:
  • the first timing time is an uplink/downlink ratio of the first radio frame, and a time interval between transmission downlinks, where the second radio frame is an adjacent frame of the first radio frame, and the The uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • a data transmission apparatus includes:
  • a receiving unit configured to receive downlink data sent by the base station by using a downlink subframe or a special subframe in the first radio frame
  • a processing unit configured to determine, according to the first timing time of the first radio frame, whether the sending unit can be used, to determine that the unusable device is used according to the first timing time of the first radio frame
  • the first uplink subframe required by the time threshold sends the response information to the base station;
  • the first timing time is based on the uplink and downlink ratio of the first radio frame, and the downlink is transmitted.
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • an embodiment of the present invention provides a data transmission method, including:
  • the second timing time is a time between the uplink and downlink ratio of the first radio frame, the uplink subframe that transmits the uplink data, and the downlink subframe or the special subframe that feeds back the response information of the uplink data.
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • an embodiment of the present invention provides a data transmission device.
  • a receiving unit configured to receive, by using an uplink subframe in the first radio frame, uplink data sent by the user equipment
  • a processing unit configured to determine, according to the second timing time of the first radio frame, whether the sending unit can be used, to determine that the second radio frame cannot be used according to the second timing time of the first radio frame Transmitting the response information to the user equipment by using a downlink subframe or a special subframe that meets a time threshold requirement for a time interval of the uplink subframe of the first radio frame;
  • the second timing time is a time between the uplink and downlink ratio of the first radio frame, the uplink subframe that transmits the uplink data, and the downlink subframe or the special subframe that feeds back the response information of the uplink data.
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • an embodiment of the present invention provides a data transmission method, including: And determining, according to the third timing time of the second radio frame, that the uplink data in the uplink subframe of the second radio frame cannot be scheduled by using a scheduling grant command received by the downlink subframe or the special subframe of the second radio frame, where Then, in the first radio frame, the scheduling grant command sent by the base station is received from the latest downlink subframe or the special subframe that meets the time threshold requirement with the time interval of the uplink subframe of the second radio frame; when the scheduling authorization is successfully received When the command is sent, the uplink data scheduled by the scheduling authorization command is sent to the base station in the uplink subframe of the second radio frame;
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing time is a downlink subframe or a special subframe and a transmission according to the uplink and downlink ratio of the second radio frame, and the scheduling authorization command.
  • an embodiment of the present invention provides a data transmission apparatus, including:
  • a processing unit configured to determine, according to a third timing time of the second radio frame, whether the uplink sub-frame of the second radio frame can be scheduled by using a scheduling grant command received by the downlink subframe or the special subframe of the second radio frame Uplink data in the frame;
  • a receiving unit configured to determine, according to the third timing time of the second radio frame, that the scheduling of the second radio frame cannot be scheduled by using a scheduling grant command received by the downlink subframe or the special subframe of the second radio frame
  • the uplink data in the subframe, in the first radio frame receives the scheduling authorization command sent by the base station from the nearest downlink subframe or special subframe that meets the time threshold requirement in the time interval of the uplink subframe of the second radio frame.
  • a sending unit configured to: when the scheduling authorization command is successfully received, send uplink data scheduled by the scheduling authorization command to the base station in the uplink subframe of the second radio frame;
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing time is a downlink subframe or a special subframe and a transmission according to the uplink and downlink ratio of the second radio frame, and the scheduling authorization command.
  • an embodiment of the present invention provides a data transmission method including:
  • Determining, by the third timing time of the second radio frame, that the downlink sub-frame of the second radio frame cannot pass If the scheduling grant command sent by the frame or the special subframe is used to schedule the uplink data in the uplink subframe of the second radio frame, the time interval of the uplink subframe with the second radio frame is used in the first radio frame. The latest downlink subframe or special subframe that meets the time threshold requirement is sent to the user equipment;
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing is a time interval between the uplink and downlink ratio of the second radio frame, the downlink subframe or the special subframe that sends the scheduling grant command, and the uplink subframe that receives the uplink data.
  • an embodiment of the present invention provides a data transmission apparatus, including:
  • a processing unit configured to determine, according to a third timing time of the second radio frame, whether the uplink sub-frame of the second radio frame can be scheduled by using a scheduling grant command sent by the downlink subframe or the special subframe of the second radio frame Uplink data in the frame;
  • a sending unit configured to determine, according to a third timing time of the second radio frame, that an uplink subframe of the second radio frame cannot be scheduled by using a scheduling grant command sent by a downlink subframe or a special subframe of the second radio frame In the first radio frame, the scheduling grant command is sent in the first radio frame by using the latest downlink subframe or special subframe that meets the time threshold requirement for the time interval of the uplink subframe of the second radio frame.
  • a receiving unit configured to receive the uplink data sent by the user equipment in the uplink subframe of the second radio frame
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing is a time interval between the uplink and downlink ratio of the second radio frame, the downlink subframe or the special subframe that sends the scheduling grant command, and the uplink subframe that receives the uplink data.
  • FIG. 1 is a schematic flowchart 1 of a data transmission method according to an embodiment of the present invention.
  • FIG. 1 is a second schematic flowchart of a data transmission method according to another embodiment of the present invention.
  • FIG. 2 is a first schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 2A is a second schematic structural diagram of a data transmission apparatus according to another embodiment of the present invention.
  • FIG. 3 is a schematic flowchart 3 of a data transmission method according to another embodiment of the present invention.
  • FIG. 3A is a schematic flowchart diagram 4 of a data transmission method according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram 3 of a data transmission apparatus according to another embodiment of the present invention.
  • FIG. 4A is a schematic diagram 4 of a structure of a data transmission apparatus according to another embodiment of the present invention.
  • FIG. 5 is a schematic flowchart 5 of a data transmission method according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram 5 of a data transmission apparatus according to another embodiment of the present invention.
  • FIG. 7 is a schematic flowchart 6 of a data transmission method according to another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram 6 of a data transmission apparatus according to another embodiment of the present invention.
  • Figure 25 is a first embodiment of the invention:
  • Figure 28 is a first embodiment of the invention:
  • Figure 28 is a first embodiment of the invention:
  • Figure 29 is a first embodiment of the invention:
  • the uplink and downlink ratios of the radio frames remain unchanged.
  • the data can be smoothly transmitted on the radio frames by defining the timing relationship of the three operations of the initial data, the feedback information, and the retransmission data.
  • the uplink and downlink ratio of the radio frame changes, if the timing relationship of the three operations of the initial data, feedback information, and retransmission data is still defined, the feedback information and the retransmission data cannot be transmitted smoothly. The efficiency of the use of system resources.
  • the terms "initial data”, “subframe of initial data”, “retransmission data”, and “subframe of retransmission data” are used as follows, if one The data transmission fails and needs to be retransmitted.
  • the "initial data” refers to the state before the data is retransmitted, and the retransmission data refers to the state when the data is retransmitted.
  • the subframe used to retransmit the data is a subframe for retransmitting data, before retransmission
  • the subframe in which the data is transmitted is a subframe of the initial transmission data. It can be understood that each downlink subframe, uplink subframe, and special subframe can be used for both initial data transmission and retransmission data.
  • the HARQ hybrid automatic retransmission technology can be applied to the LTE (Evolved Universal Terrestrial Radio Access) protocol, as well as other wireless communication protocols, and thus various communications using hybrid retransmission technology.
  • the system can be applied to the data transmission method or apparatus of the embodiment of the present invention.
  • an embodiment of the present invention provides a data transmission method, including:
  • Step 101 Receive downlink data sent by the base station by using a downlink subframe or a special subframe in the first radio frame.
  • Step 102 Determine, according to the first timing time of the first radio frame, that the first
  • the first uplink subframe required by the inter-threshold sends the response information to the base station;
  • the first timing time is an uplink/downlink ratio of the first radio frame, and a time interval between transmission downlinks, where the second radio frame is an adjacent frame of the first radio frame, and the The uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the user equipment and the network device can correctly perform corresponding response information feedback. Therefore, it can better support the smooth transition of the business and improve the efficiency of the use of system resources.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the data transmission method of the embodiment of the present invention when determining, according to the first timing time of the first radio frame, that the uplink subframe in the first radio frame can be used to feed back the response information of the downlink data, And transmitting the response information to the base station in the uplink subframe of the first radio frame.
  • the first radio frame includes one radio frame or two adjacent radio frames.
  • the second radio frame includes one radio frame or two adjacent radio frames.
  • the data transmission method of the embodiment of the present invention may further include:
  • the subframe set formed by the multiple downlink subframes and/or the special subframe is determined;
  • the base station may allocate a mapping label for the subframe included in the subframe set, and the user equipment may obtain, from the base station, a mapping label allocated for the subframe included in the subframe set.
  • the data transmission method of the embodiment of the present invention may further include:
  • the data transmission method of the embodiment of the present invention may further include:
  • Radio resource control RRC signaling where the RRC signaling carries time information of the uplink and downlink ratio change, and uplink and downlink ratio information of the second radio frame.
  • the base station can notify the user equipment of the uplink and downlink proportion change time and the uplink and downlink proportions before and after the change before the uplink and downlink ratio changes by using the proprietary RRC signaling.
  • the user equipment can also be notified by other methods, such as by broadcast message or physical layer signaling.
  • the user equipment can clearly indicate when the uplink response information is fed back to the base station, thereby realizing the industry. Smooth transition.
  • the user equipment and the network device can correctly perform corresponding data scheduling, Responding to feedback, thus better supporting the smooth transition of services and improving the efficiency of system resources.
  • an embodiment of the present invention provides a data transmission method, including: a user equipment.
  • Step 112 When determining, according to the first timing time of the first radio frame, that the uplink information in the first radio frame cannot be used to receive the response information of the downlink data, in the second radio frame, The first uplink subframe required by the threshold receives the response information of the downlink data sent by the user equipment;
  • the first timing time is an uplink/downlink ratio of the first radio frame, and a time interval between transmission downlinks, where the second radio frame is an adjacent frame of the first radio frame, and the The uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the user equipment and the network device can correctly perform corresponding response information feedback. Therefore, it can better support the smooth transition of the business and improve the efficiency of the use of system resources.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the data transmission method of the embodiment of the present invention when determining, according to the first timing time of the first radio frame, that the uplink sub-frame in the first radio frame is used to receive the response information of the downlink data, The uplink subframe of the first radio frame receives the response information sent by the user equipment.
  • the first radio frame includes one radio frame or two adjacent radio frames.
  • the second radio frame includes one radio frame or two adjacent radio frames.
  • the data transmission method of the embodiment of the present invention may further include:
  • a mapping label is assigned to the subframe included in the subframe set.
  • the data transmission method of the embodiment of the present invention may further include:
  • the RRC signaling is sent to the user equipment, and the RRC signaling carries time information of the uplink and downlink ratio change, and uplink and downlink ratio information of the second radio frame.
  • the base station can notify the user equipment of the uplink and downlink proportion change time and the uplink and downlink proportions before and after the change before the uplink and downlink ratio changes by using the proprietary RRC signaling.
  • the user equipment can also be notified by other methods, such as by broadcast message or physical layer signaling. Therefore, the user equipment can clearly indicate when the uplink response information is fed back to the base station, thereby achieving a smooth transition of the service.
  • Infusion device including:
  • the receiving unit 201 is configured to receive downlink data sent by the base station by using a downlink subframe or a special subframe in the first radio frame.
  • the processing unit 202 is configured to determine, according to the first timing time of the first radio frame, whether the sending unit 203 is configured to determine, according to the first timing time of the first radio frame, that the
  • the first uplink subframe that meets the time threshold requirement sends the response information to the base station;
  • the first timing time is an uplink/downlink ratio of the first radio frame, and a time interval between transmission downlinks, where the second radio frame is an adjacent frame of the first radio frame, and the The uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the data transmission device of the embodiment of the present invention may be separately provided or integrated with the user equipment.
  • the user equipment and the network device can correctly perform corresponding response information feedback. Therefore, it can better support the smooth transition of the business and improve the efficiency of the use of system resources.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4ms.
  • the sending unit 203 is further configured to: when determining, according to the first timing time of the first radio frame, that the uplink subframe in the first radio frame can be used to feed back the response information of the downlink data, Transmitting the response information to the base station in the uplink subframe of the first radio frame.
  • the first radio frame includes one or two adjacent radio frames.
  • the second radio frame includes one or two adjacent radio frames.
  • the data transmission device of the embodiment of the present invention may further include:
  • a determining unit configured to determine, when the response information of the downlink data of the multiple downlink subframes and/or the special subframe is fed back by using the same uplink subframe, the subframe formed by the multiple downlink subframes and/or the special subframe set.
  • an obtaining unit configured to acquire a mapping label allocated for the subframe included in the subframe set.
  • the receiving unit 201 is further configured to receive, by using a downlink subframe or a special subframe in the first radio frame, a scheduling grant command sent by the base station, where the scheduling grant command is used to schedule downlink data transmission.
  • the sending unit 203 is further configured to obtain, according to the control channel unit CCE index occupied by the scheduling authorization command, and the mapping label of the downlink subframe or the special subframe, to obtain an uplink response channel resource index allocated for the downlink data transmission, where And transmitting, by using the channel resource corresponding to the uplink acknowledgement channel resource index, the response information to the base station.
  • the receiving unit 201 is further configured to receive, by the base station, radio resource control RRC signaling, where the RRC signaling carries time information of an uplink-downlink ratio change, and uplink and downlink of the second radio frame. Matching information.
  • the data transmission device of the embodiment of the present invention is used to implement the data transmission method corresponding to FIG. 1.
  • the data transmission device and the configuration thereof of the embodiment of the present invention can be understood corresponding to the actions performed by the data transmission method corresponding to FIG. 1, and are no longer Narration.
  • an embodiment of the present invention provides a data transmission apparatus, including:
  • the sending unit 211 is configured to send downlink data to the user equipment by using a downlink subframe or a special subframe in the first radio frame.
  • the processing unit 212 is configured to determine whether the response information of the downlink data is received by using an uplink subframe in the first radio frame according to the first timing time of the first radio frame.
  • the receiving unit 213 is configured to determine, according to the first timing time of the first radio frame, that the Receiving, by using the uplink subframe in the first radio frame, the response information of the downlink data, and receiving, in the first uplink subframe of the second unsatisfied time threshold, the downlink data sent by the user equipment.
  • Response message
  • the first timing time is an uplink/downlink ratio of the first radio frame, and a time interval between transmission downlinks, where the second radio frame is an adjacent frame of the first radio frame, and the The uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the data transmission device of the embodiment of the present invention may be separately provided or integrated with a network device such as a base station.
  • the user equipment and the network device can correctly perform corresponding response information feedback. Therefore, it can better support the smooth transition of the business and improve the efficiency of the use of system resources.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the receiving unit 212 may be further configured to: when determining, according to the first timing time of the first radio frame, use the uplink subframe in the first radio frame to receive the downlink The response information of the data is received by the user equipment in the uplink subframe of the first radio frame.
  • the first radio frame includes one radio frame or two adjacent radio frames.
  • the second radio frame includes one radio frame or two adjacent radio frames.
  • a determining unit configured to determine, when the same uplink subframe returns feedback information of downlink data of multiple downlink subframes and/or special subframes, a subframe set formed by the multiple downlink subframes and/or special subframes .
  • an allocating unit configured to allocate a mapping label to the subframe included in the subframe set.
  • the sending unit 211 may be further configured to send, by using a downlink subframe or a special subframe in the first radio frame, a scheduling authorization command to the user equipment, where the scheduling authorization command is used. Scheduling downlink data transmission;
  • the receiving unit 213 can also be used for the control channel unit occupied according to the scheduling authorization command.
  • the sending unit 211 may be further configured to send the radio resource control RRC signaling to the user equipment, where the RRC signaling carries time information of the uplink and downlink ratio change, and the second wireless The uplink and downlink ratio information of the frame.
  • the data transmission device of the embodiment of the present invention is used to implement the data transmission method corresponding to FIG. 1A.
  • the data transmission device and the configuration thereof of the embodiment of the present invention can be understood corresponding to the actions performed in the data transmission method corresponding to FIG. 1A. Let me repeat.
  • an embodiment of the present invention provides a data transmission method, including:
  • Step 301 Receive uplink data sent by the user equipment by using an uplink subframe in the first radio frame.
  • Step 302 When it is determined that the second radio frame cannot be used according to the second timing time of the first radio frame, use a time interval of the uplink subframe with the first radio frame to meet a time threshold requirement. Sending the response information to the user equipment in a downlink subframe or a special subframe;
  • the second timing time is a time between the uplink and downlink ratio of the first radio frame, the uplink subframe that transmits the uplink data, and the downlink subframe or the special subframe that feeds back the response information of the uplink data.
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the downlink data or the special subframe in the first radio frame may be used to feed back the uplink data.
  • the response information of the uplink data is sent to the user equipment in the downlink subframe or the special subframe of the first radio frame.
  • the frame may include:
  • the downlink subframe or the special subframe that meets the time threshold requirement for the time interval of the uplink subframe of the first radio frame is determined according to the second timing time of the first radio frame.
  • the uplink of the first radio frame is the uplink subframe or the special subframe
  • the time interval of the subframe satisfies the first downlink subframe or the special subframe required by the time threshold.
  • the data transmission method of the embodiment of the present invention may further include:
  • the response information of the uplink data is a NACK
  • the time interval from the downlink subframe or the special subframe that is used to feed back the response information of the uplink data meets a time threshold requirement.
  • the uplink data that is retransmitted by the user equipment is received in an uplink subframe.
  • the data transmission method of the embodiment of the present invention may further include:
  • the user equipment and the network device can correctly perform corresponding data scheduling, Response information feedback and data retransmission can better support the smooth transition of services and improve the efficiency of system resources.
  • an embodiment of the present invention provides a data transmission method, including:
  • Step 311 Send uplink data to the base station by using an uplink subframe in the first radio frame.
  • Step 312 When it is determined that the downlink subframe or the special subframe in the first radio frame cannot receive the response information of the uplink data according to the second timing time of the first radio frame, then in the second wireless In the frame, the response information of the uplink data sent by the base station is received by the downlink subframe or the special subframe that meets the time threshold requirement by the time interval of the uplink subframe of the first radio frame; wherein, the second The timing is a time interval between the uplink and downlink ratio of the first radio frame, the uplink subframe that transmits the uplink data, and the downlink subframe or the special subframe that receives the response information of the uplink data, where the second interval is The radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the user equipment and the network device can correctly perform corresponding response information feedback. Therefore, it can better support the smooth transition of the business and improve the efficiency of the use of system resources.
  • the time interval meets the time threshold requirement, and the time interval is greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the data transmission method of the embodiment of the present invention may further include:
  • the downlink subframe or the special subframe receives response information of the uplink data sent by the base station.
  • the data transmission method of the embodiment of the present invention in the second radio frame, the downlink subframe or the special sub-requirement that meets the time threshold requirement by the time interval of the uplink subframe of the first radio frame
  • the frame receiving the response information of the uplink data sent by the base station may include:
  • the downlink subframe or the special subframe that meets the time threshold requirement for the time interval of the uplink subframe of the first radio frame is determined according to the second timing time of the first radio frame.
  • the uplink of the first radio frame is the uplink subframe or the special subframe
  • the time interval of the subframe satisfies the first downlink subframe or the special subframe required by the time threshold.
  • the data transmission method of the embodiment of the present invention may further include:
  • the response information of the uplink data is a NACK
  • the first uplink subframe that meets the time threshold is met by the time interval of the downlink subframe or the special subframe that is used to feed back the response information of the uplink data. Resending the uplink data to the base station.
  • an embodiment of the present invention provides a data transmission apparatus, including:
  • the receiving unit 401 is configured to receive uplink data sent by the user equipment by using an uplink subframe in the first radio frame.
  • the processing unit 402 is configured to determine, according to the second timing time of the first radio frame, whether the sending unit 403 can be configured to determine that the time cannot be made according to the second timing time of the first radio frame, Sending, in the second radio frame, the response information to the user equipment by using a downlink subframe or a special subframe that meets a time threshold requirement in a time interval of the uplink subframe of the first radio frame;
  • the second timing time is a time interval between the uplink and downlink ratio of the first radio frame, the uplink subframe for transmitting uplink data, and the downlink subframe or special subframe for feeding back response information of the uplink data
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the data transmission device of the embodiment of the present invention may be separately provided or integrated with a network device such as a base station.
  • the user equipment and the network device can correctly perform corresponding response information feedback. Therefore, it can better support the smooth transition of the business and improve the efficiency of the use of system resources.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the sending unit 403 is further configured to: when the response information according to the second timing of the first radio frame, the downlink subframe or the special sub-frame of the first radio frame Frame transmission The response information of the uplink data is sent to the user equipment.
  • the sending unit 403 is further configured to: when the uplink and downlink ratio of the first radio frame is changed to the uplink and downlink ratio of the second radio frame, when only the first radio frame exists
  • the uplink subframe corresponding to the downlink subframe of the second radio frame is changed, the time interval of the uplink subframe with the first radio frame satisfies a downlink subframe or a special subframe required by a time threshold, a downlink subframe or a special subframe determined by the second timing of the first radio frame.
  • the sending unit 403 is further configured to: when the uplink/downlink ratio of the first radio frame is changed to the uplink and downlink ratio of the second radio frame, when at least one of the first radio frames exists
  • the time interval of the uplink subframe with the first radio frame meets a downlink subframe or a special subframe required by a time threshold, and is a The time interval of the uplink subframe of the first radio frame satisfies a first downlink subframe or a special subframe required by a time threshold.
  • the receiving unit 401 is further configured to: when the response information of the uplink data is NACK, time from the downlink subframe or the special subframe that is used to feed back the response information of the uplink data. Receiving, in the first uplink subframe that meets the time threshold requirement, the uplink data that is retransmitted by the user equipment.
  • the data transmission device of the embodiment of the present invention may further include:
  • the merging unit is configured to combine the uplink data sent by the user equipment and the uplink data resent by the user equipment according to the time relationship between the sending the uplink data and the resending the uplink data.
  • the user equipment and the network device can correctly perform corresponding data scheduling, Response information feedback and data retransmission can better support the smooth transition of services and improve the efficiency of system resources.
  • the data transmission device of the embodiment of the present invention is used to implement the data transmission method corresponding to FIG. 3.
  • the data transmission device and the configuration thereof of the embodiment of the present invention can be understood corresponding to the actions performed in the data transmission method corresponding to FIG. 3, and Let me repeat.
  • FIG. 4A in accordance with the data transmission method shown in FIG. 3A, an embodiment of the present invention provides a data transmission apparatus, including:
  • the sending unit 411 is configured to send uplink data to the base station by using an uplink subframe in the first radio frame.
  • the processing unit 212 is configured to determine whether, according to the second timing time of the first radio frame, the response information of the uplink data is received by using a downlink subframe or a special subframe in the first radio frame.
  • the receiving unit 413 is configured to: when determining, according to the second timing time of the first radio frame, that the downlink information or the special subframe in the first radio frame cannot be used to receive the response information of the uplink data,
  • the response information of the uplink data sent by the base station is received by the downlink subframe or the special subframe that meets the time threshold requirement by the time interval of the uplink subframe of the first radio frame;
  • the second timing time is a time between the uplink and downlink ratio of the first radio frame, the uplink subframe that transmits the uplink data, and the downlink subframe or the special subframe that feeds back the response information of the uplink data.
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame.
  • the data transmission device of the embodiment of the present invention may be separately provided or integrated with the user equipment.
  • the user equipment and the network device can correctly perform corresponding response information feedback. Therefore, it can better support the smooth transition of the business and improve the efficiency of the use of system resources.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the receiving unit 412 is further configured to: when determining, according to the second timing time of the first radio frame, use the downlink in the first radio frame
  • the subframe or the special subframe receives the response information of the uplink data sent by the base station in the downlink subframe or the special subframe of the first radio frame.
  • the data transmission device of the embodiment of the present invention may be further configured to change from an uplink/downlink ratio of the first radio frame to an uplink/downlink ratio of the second radio frame.
  • the uplink subframe of the first radio frame corresponds to the downlink subframe of the second radio frame
  • the time interval of the uplink subframe with the first radio frame meets the downlink threshold of the time threshold requirement.
  • a frame or a special subframe is a downlink subframe or a special subframe determined according to a second timing time of the first radio frame.
  • the receiving unit 412 may be further configured to: when the uplink/downlink ratio of the first radio frame is changed to the uplink and downlink ratio of the second radio frame, when there is at least one downlink of the first radio frame
  • the time interval of the uplink subframe of the first radio frame meets a time threshold requirement
  • the downlink subframe or the special subframe is The time interval of the uplink subframe of the first radio frame satisfies a first downlink subframe or a special subframe required by a time threshold.
  • the sending unit 4114 is further configured to: when the response information of the uplink data is NACK, pass the downlink sub-sponsor with the feedback information of the uplink data The first uplink subframe of the frame or the special subframe whose time interval meets the time threshold requirement retransmits the uplink data to the base station.
  • the user equipment and the network device can correctly perform corresponding data scheduling, Response information feedback and data retransmission can better support the smooth transition of services and improve the efficiency of system resources.
  • the data transmission device of the embodiment of the present invention is used to implement the data transmission method corresponding to FIG. 3A.
  • the data transmission device and the configuration thereof of the embodiment of the present invention can be understood corresponding to the actions performed in the data transmission method corresponding to FIG. 3A. Let me repeat.
  • an embodiment of the present invention provides a data transmission method, including: 501. Determine, according to a third timing time of the second radio frame, that the uplink grant in the uplink subframe of the second radio frame cannot be scheduled by using a scheduling grant command received by the downlink subframe or the special subframe of the second radio frame.
  • the data in the first radio frame, receives the scheduling grant command sent by the base station from the nearest downlink subframe or special subframe that meets the time threshold requirement in the time interval of the uplink subframe of the second radio frame.
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing time is a downlink subframe or a special subframe and a transmission according to the uplink and downlink ratio of the second radio frame, and the scheduling authorization command.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the data transmission method of the embodiment of the present invention determines, according to the third timing time of the second radio frame, a scheduling authorization command that can be received by using a downlink subframe or a special subframe of the second radio frame. Scheduling uplink data in the uplink subframe of the second radio frame, and receiving a scheduling grant command in the downlink subframe or the special subframe of the second radio frame, where the second radio frame is located
  • the uplink subframe transmits the uplink data.
  • an embodiment of the present invention provides a data transmission apparatus, including:
  • the processing unit 601 is configured to determine whether, according to the third timing time of the second radio frame, The scheduling grant command received by the downlink subframe or the special subframe of the second radio frame is used to schedule uplink data in the uplink subframe of the second radio frame.
  • the receiving unit 602 is configured to determine, according to the third timing time of the second radio frame, that the uplink grant sub-frame of the second radio frame cannot be scheduled by using a scheduling grant command received by the downlink subframe or the special subframe of the second radio frame.
  • the uplink data in the frame, in the first radio frame receives the scheduling grant command sent by the base station from the latest downlink subframe or special subframe that meets the time threshold requirement in the time interval of the uplink subframe of the second radio frame.
  • the sending unit 603 is configured to: when the scheduling authorization command is successfully received, send the uplink data scheduled by the scheduling authorization command to the base station in the uplink subframe of the second radio frame;
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing time is a downlink subframe or a special subframe and a transmission according to the uplink and downlink ratio of the second radio frame, and the scheduling authorization command.
  • the data transmission device of the embodiment of the present invention may be separately provided or integrated with the user equipment.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the receiving unit 602 is further configured to: when determining, according to the third timing time of the second radio frame, a scheduling authorization command that can be received by using a downlink subframe or a special subframe of the second radio frame, The uplink data in the uplink subframe of the second radio frame receives the scheduling grant command in the downlink subframe or the special subframe of the second radio frame.
  • the data transmission device of the embodiment of the present invention is used to implement the data transmission method corresponding to FIG. 5, and the present invention
  • the data transmission apparatus of the embodiment and the configuration thereof can be understood corresponding to the operations performed in the data transmission method corresponding to FIG. 5, and details are not described herein again.
  • an embodiment of the present invention provides a data transmission method, including:
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing is a time interval between the uplink and downlink ratio of the second radio frame, the downlink subframe or the special subframe that sends the scheduling grant command, and the uplink subframe that receives the uplink data.
  • the base station needs to schedule uplink data transmission of the user equipment in the uplink subframe of the second radio frame.
  • the time interval satisfies the time threshold requirement, and the method includes: the time interval being greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the data transmission method of the embodiment of the present invention determines, according to the third timing time of the second radio frame, a scheduling authorization that can be sent by using a downlink subframe or a special subframe of the second radio frame.
  • a scheduling authorization that can be sent by using a downlink subframe or a special subframe of the second radio frame.
  • the uplink subframe receives the uplink data.
  • the embodiment of the present invention provides a data transmission apparatus, including: a processing unit 801, configured to determine whether the second radio frame is available according to a third timing time of the second radio frame.
  • the scheduling grant command sent by the downlink subframe or the special subframe is used to schedule uplink data in the uplink subframe of the second radio frame.
  • the sending unit 802 is configured to determine, according to the third timing time of the second radio frame, that the second radio frame cannot be scheduled by using a scheduling grant command sent by the downlink subframe or the special subframe of the second radio frame.
  • the uplink data in the uplink subframe is sent in the first radio frame by using the latest downlink subframe or special subframe that meets the time threshold requirement for the time interval of the uplink subframe of the second radio frame. Scheduling an authorization command to the user equipment.
  • the receiving unit 803 is configured to receive the uplink data sent by the user equipment in the uplink subframe of the second radio frame.
  • the second radio frame is an adjacent frame of the first radio frame, and the uplink and downlink ratio of the second radio frame is different from the uplink and downlink ratio of the first radio frame, and the third
  • the timing is a time interval between the uplink and downlink ratio of the second radio frame, the downlink subframe or the special subframe that sends the scheduling grant command, and the uplink subframe that receives the uplink data.
  • the data transmission device of the embodiment of the present invention may be separately provided or integrated with a network device such as a base station.
  • the time interval meets the time threshold requirement, and the time interval is greater than or equal to the time threshold.
  • the time threshold is 4 ms.
  • the sending by the sending unit 806, the second, transmitting the uplink data requirement, may also be used to determine, when the second radio frame is downlink, according to the third timing of the second radio frame.
  • the scheduling grant command sent by the subframe or the special subframe to schedule the uplink data in the uplink subframe of the second radio frame, and the downlink subframe or the special subframe in the second radio frame Send a scheduling authorization command.
  • the data transmission device of the embodiment of the present invention is used to implement the data transmission method corresponding to FIG. 7.
  • the data transmission device and the configuration thereof of the embodiment of the present invention can be understood corresponding to the actions performed in the data transmission method corresponding to FIG. 7, and Let me repeat.
  • the data transmission method of the embodiment of the present invention is described below with reference to a specific embodiment of the TDD system of the LTE.
  • the time threshold is 4 ms.
  • the dotted line in the referenced figure indicates the time of the uplink and downlink ratio change, and the left side of the dotted line is the first wireless.
  • the frame, the right side of the dotted line is the second radio frame, which will not be described below.
  • the embodiment of the invention provides a data transmission method, which is applicable to a user equipment.
  • the user equipment receives the downlink data sent by the network device (such as the base station), determines whether the data is correctly received, and generates corresponding uplink response information, where the uplink response information includes an ACK (Acknowledgment) or a NACK (Negative Acknowledgment).
  • the user equipment sends uplink response information to the base station.
  • the uplink and downlink ratios are changed, and the user equipment needs to know the uplink and downlink ratio change time in advance, and the uplink and downlink ratios before and after the change.
  • the network device can pass the proprietary RRC.
  • Radio Resource Control Radio Resource Control
  • Radio Resource Control notifies the user equipment of the uplink and downlink ratio change time and the uplink and downlink ratio before and after the change of the uplink and downlink ratios.
  • the user equipment is notified by broadcast message or physical layer signaling. Therefore, the user equipment can specify the time when the uplink response information is fed back to the network device, thereby achieving a smooth transition of the service.
  • a change is made for the uplink-downlink ratio, and a definition is defined.
  • the timing relationship between the downlink data transmission and the uplink response information feedback is the uplink subframe that sends the uplink response information is the first uplink subframe that meets the time threshold between the subframes and the downlink data transmission, and is visible within the time threshold.
  • the user equipment must be capable of at least receiving downlink data and generating corresponding uplink response information according to whether the data is correctly received or not.
  • the time required for the user equipment to complete downlink data reception and generate uplink response information is related to the processing capability of the device. For the TDD system of LTE, after considering the processing capability of the device, the time threshold is set to 4 ms, that is, 4 subframes.
  • the uplink and downlink ratio of the first radio frame is 1, the uplink and downlink ratio of the second radio frame is 2, and the uplink and downlink ratios of the first radio frame to the second radio frame are changed.
  • the uplink and downlink are as shown in Table 1 below:
  • Table 1 shows the uplink and downlink ratios supported by the LTE TDD system:
  • Table 2 shows the downlink subframe or special subframe for transmitting downlink data defined by the uplink-downlink ratio and the feedback
  • the subframe indicated by the subframe index is an uplink subframe used for feeding back uplink response information
  • the subframe index and the uplink-downlink ratio jointly indicate the obtained number
  • each digit corresponds to a downlink subframe for transmitting downlink data
  • the special subframe specifically, the corresponding downlink subframe or the special subframe is obtained after the subframe corresponding to the value given by the forward subframe and the number given by the uplink subframe of the feedback uplink response information That subframe.
  • the downlink ratio 2 is used as an example. If the subframe 2 corresponds to four digits ⁇ 8, 7, 4, 6 ⁇ , the subframes are forwarded by 8, 7, 4, and 6 subframes, respectively, and the corresponding downlink subframes. It is subframe 4, subframe 5, subframe 8, and subframe 6, respectively.
  • the timing relationship between the downlink data transmission defined by the uplink and downlink ratio of the first radio frame and the feedback of the uplink response information is used according to the uplink/downlink ratio of the first radio frame (see Table 2).
  • the downlink data transmission occurs in subframe 5, subframe 6 and subframe 9 in the first radio frame, and the uplink response information cannot be fed back in the first radio frame. Therefore, in the data transmission method provided by the embodiment of the present invention, for downlink data transmission of subframe 5, subframe 6, and subframe 9 in the first radio frame, the user equipment is respectively in subframe 2, subframe 2, and subframe of the second radio frame.
  • the user equipment transmits uplink acknowledgement information using the first uplink subframe that satisfies the time threshold (4 ms) required between subframe 5, subframe 6 and subframe 9 in the first radio intraframe.
  • the time threshold (4 ms) required between subframe 5, subframe 6 and subframe 9 in the first radio intraframe.
  • the uplink and downlink ratio of the first radio frame is 1, the downlink data defined by the uplink and downlink ratio of the first radio frame is transmitted between the uplink response information feedback.
  • the uplink response information may be fed back in the first radio frame, as may be in the first radio frame
  • the subframe 7 and the subframe 8 feed back the corresponding uplink response information
  • the user equipment feeds back the corresponding uplink response information in the subframe 7, the subframe 7, and the subframe 8 of the first radio frame, respectively.
  • the timing relationship defined for the uplink and downlink ratio of the second radio frame may be used.
  • the corresponding uplink subframe feeds back uplink response information; if the wireless uplink subframe after the second radio frame feeds back uplink response information.
  • the uplink and downlink ratio of the first radio frame is 2
  • the uplink and downlink ratio of the second radio frame is 1, and the first radio frame to the second radio frame are changed.
  • the uplink/downlink ratio of the first radio frame is 2
  • the timing relationship between the downlink data transmission and the uplink response information feedback defined by the first radio frame in the prior art occurs in the first radio intraframe 4
  • Downlink data transmission of subframe 5, subframe 6, subframe 8, and subframe 9 the uplink response information cannot be fed back in the first radio frame. Therefore, in the data transmission method provided by the embodiment of the present invention, for downlink data transmission in subframe 4, subframe 5, subframe 6, subframe 8, and subframe 9 in the first radio frame, the user equipment is respectively in the second radio frame.
  • Subframe 2, subframe 2, subframe 2, subframe 2, and subframe 3 feedback corresponding uplink acknowledgement information, that is, the user equipment uses the first radio intraframe 4, subframe 5, and subframe 6, subframe 8
  • the first uplink subframe that satisfies the time threshold (4ms) between subframe 9 and the uplink subframe transmits uplink acknowledgement information.
  • the uplink and downlink ratio of the first radio frame is 2
  • the downlink data defined by the uplink and downlink ratio of the first radio frame is transmitted between the uplink response information feedback.
  • the uplink response information may be fed back in the first radio frame, as may be fed back in subframe 7 of the first radio frame.
  • the user equipment feeds back the corresponding uplink response information in the subframe 7 of the first radio frame.
  • the first radio frame and the second radio frame each include only one radio frame. As shown in FIG. 11 and FIG. 12, the first radio frame and the second radio frame may also include more than one radio. frame.
  • the uplink and downlink ratio of the first radio frame is 5
  • the first radio frame includes two radio frames
  • the uplink and downlink ratio of the second radio frame is 2
  • the first radio frame is In the second radio frame, the uplink and downlink ratios change.
  • the timing relationship between the downlink data transmission and the uplink response information feedback defined by the uplink and downlink ratio of the first radio frame in the prior art occurs in the first wireless.
  • the downlink data transmission of the subframe 8 in the first radio intraframe included in the frame may feed back the uplink response information in the second radio intraframe 2 included in the first radio frame.
  • the downlink data transmission occurs in the first radio intraframe 9 included in the first radio frame, the second radio intraframe 0 in the first radio frame, the subframe 1, the subframe 3, the subframe 8, and the subframe 9.
  • the uplink response information cannot be fed back in the first radio frame.
  • the data transmission method for downlink data transmission in subframe 2, subframe 1, subframe 3 subframe 8 and subframe 9 in the second radio frame included in the first radio frame, the user equipment Evaluating the corresponding uplink response in subframe 2, subframe 2, subframe 2, subframe 2, subframe 2, subframe 2, subframe 2, subframe 2, subframe 2, subframe 2, subframe 2, and subframe 8 of the second radio frame, respectively. information.
  • the uplink and downlink ratio of the first radio frame is 2, the uplink and downlink ratio of the second radio frame is 5, and the second radio frame includes two radio frames, and the first radio frame is In the second radio frame, the uplink and downlink ratios change.
  • the timing relationship between the downlink data transmission and the uplink response information feedback defined by the uplink and downlink ratio of the first radio frame in the prior art occurs in the first wireless.
  • the uplink response information may be fed back in the subframe 7 in the first radio frame.
  • the downlink data transmission occurs in subframe 4, subframe 5, subframe 6, subframe 8, and subframe 9 in the first radio frame, and the uplink response information cannot be fed back in the first radio frame.
  • the user equipment is respectively in the second radio frame.
  • the subframe 2 of the first radio frame included, the subframe 2, the subframe 2, the subframe 2, and the subframe 2 of the second radio frame included in the second radio frame feed back the corresponding uplink response information.
  • the data transmission method of the present invention for other uplink and downlink ratios shown in Table 1, As well as other unillustrated uplink and downlink ratios, the data transmission method of the present invention can be applied.
  • the downlink subframe A for the data transmission occurring in the downlink subframe A, if the corresponding uplink response information is transmitted in the uplink subframe B, the downlink subframe A is referred to as an uplink row associated subframe set.
  • the time interval between the transmission frames defined for each of the uplink and downlink ratios is given, that is, the first timing relationship in the embodiment of the present invention, specifically, the number is given.
  • the number of sub-frames that have been separated can be stored in advance in the base station and the user equipment.
  • subframe 2 corresponds to four numbers ⁇ 8, 7, 4, 6 ⁇
  • the associated downlink subframes corresponding to the four digits are subframe 4 and subframe 5, respectively.
  • Subframe 8 and subframe 6, that is, the associated downlink subframe set corresponding to subframe 2 is ⁇ subframe 4, subframe 5, subframe 8, and subframe 6 ⁇ .
  • Timing relationships provided in all the embodiments provided by the present invention may be defined in a table format similar to that shown in Table 2, and may be pre-stored in the base station and the user equipment.
  • the number of the associated downlink subframes and the associated downlink subframe set are transmitted between the downlink data defined by the embodiment of the present invention and the uplink response information feedback.
  • the timing relationship is determined.
  • the subframe 2 of the second radio frame Only the uplink response information of the two downlink subframes needs to be fed back, and the associated downlink subframe set associated with the second radio frame subframe 2 includes the first radio frame subframe 5 and the first radio frame subframe 6.
  • the subframe 7 of the second radio frame needs to feed back the uplink response information of the first radio frame subframe 9, which is visible.
  • the associated downlink subframe set associated with the subframe 7 in the second radio frame includes a first radio frame subframe 9, a second radio frame subframe 0, a second radio frame subframe 1, and a second radio frame subframe 3. .
  • the network device Before the data transmission, the network device sends a scheduling authorization command to the user equipment, where the scheduling authorization command includes a downlink allocation indication field, which is used to indicate the number of downlink scheduling to the user equipment.
  • the downlink allocation indication field is set in each associated downlink subframe set. Specifically, the downlink allocation indication field indicates that the downlink data transmission is sent to the user equipment and is sent to the user equipment.
  • the number of scheduling authorization commands As shown in FIG. 9 , in the first radio frame, the subframe 5 and the subframe 6 form an associated downlink subframe set of the second radio frame subframe 2, and the downlink allocation indication field is set according to an existing rule in the two subframes. .
  • the downlink allocation indication field value may be set in the scheduling authorization command sent in the subframe 5 and the subframe 6, respectively. For 1 and 2.
  • the timing relationship between the downlink data transmission and the uplink response information feedback provided by the embodiment of the present invention may be Acquire an uplink subframe that feeds back uplink response information. Considering that multiple user equipments simultaneously feed back uplink response information in the same uplink subframe, different uplink acknowledgement channel resources need to be allocated to the multiple user equipments.
  • each associated downlink subframe is determined by the order of its corresponding number in Table 2.
  • the following downlink ratio 2 is used as an example.
  • the base station For the downlink data sent in the associated downlink subframe A, the base station sends a scheduling authorization command to the user equipment in the associated downlink subframe A, and the user equipment first receives the scheduling authorization command, and then receives the downlink data.
  • the user equipment and the base station can calculate and obtain the uplink response channel resource index according to the control channel element (CCE) index occupied by the scheduling authorization command and the mapping label m allocated for the downlink associated subframe A.
  • CCE control channel element
  • the user equipment uses the calculated uplink response channel resource to feed back the uplink response information
  • the base station uses the calculated uplink response channel resource to receive the uplink response information fed back by the user equipment.
  • the number of the associated downlink subframes and the associated downlink subframe set are transmitted between the downlink data defined by the embodiment of the present invention and the uplink response information feedback.
  • the timing relationship is determined, and the mapping label m is assigned according to the order of the associated downlink subframe set for each associated downlink subframe.
  • both the user equipment and the base station can calculate and obtain the uplink response channel resource index " COT " according to the foregoing method.
  • the associated downlink subframe set of the second radio frame subframe 2 is ⁇ first radio frame subframe 5, first radio frame subframe 6 ⁇ or ⁇ first radio frame subframe 6, first radio frame subframe 5 ⁇
  • the base station sends downlink data (initial data) to the user equipment, and the user equipment receives the downlink data sent by the base station, determines whether the data is correctly received, and generates corresponding uplink response information.
  • the uplink response information is NACK
  • the user equipment sends an uplink acknowledgement message NACK to the base station, and the base station resends the downlink data (retransmitted data) to the user equipment.
  • the data retransmission is completely based on the scheduling authorization command, and the downlink data transmission may be sent in the same downlink subframe as the scheduling authorization command, and there is no need to define a timing relationship between the uplink response information feedback and the downlink data retransmission. Therefore, in the data transmission method of the embodiment of the present invention, the timing relationship between the feedback of the uplink response information and the retransmission of the downlink data is not strictly limited, and the time threshold must be met.
  • Embodiment 2 The embodiment of the present invention provides a data transmission method, which is applicable to a network device (such as a base station). Specifically, the network device receives the uplink data sent by the user equipment, determines whether the data is correctly received, and generates corresponding downlink response information (ACK or NACK), and the base station sends the downlink response information to the user equipment.
  • a network device such as a base station
  • the network device receives the uplink data sent by the user equipment, determines whether the data is correctly received, and generates corresponding downlink response information (ACK or NACK), and the base station sends the downlink response information to the user equipment.
  • ACK or NACK downlink response information
  • the base station sends the downlink response information to the user equipment.
  • the uplink and downlink ratios are changed, and the user equipment needs to know the uplink and downlink ratio change time in advance, and the uplink and downlink ratios before and after the change, optionally, the network device.
  • the user equipment may be notified to the user equipment by using the proprietary RRC signaling before the uplink and downlink ratio changes, and the uplink and downlink ratios before and after the change, and of course, by other methods, such as by using broadcast messages or physics.
  • Layer signaling to inform the user equipment. Therefore, the user equipment can clearly indicate when the uplink response information is fed back to the network device, thereby achieving a smooth transition of the service.
  • the timing relationship between the uplink data transmission and the downlink response information feedback is defined for the uplink and downlink ratio change: the downlink subframe or the special subframe for transmitting the downlink response information is the uplink data.
  • the downlink subframe or the special subframe that meets the time threshold between the transmitted subframes can be seen.
  • the network device Within the time threshold, the network device must be able to complete at least the uplink data reception, and generate corresponding downlink response information according to the correct reception or not.
  • the time required for the network device to complete uplink data reception and generate downlink response information is related to the processing capability of the device.
  • the device processing capability of the network device is usually much larger than the device processing capability of the user equipment, the network device needs to receive uplink data of all user equipments and generate corresponding downlink response information, and the user equipment only needs to receive downlink data belonging to itself and generate uplink response information.
  • the time threshold is 4 ms, that is, 4 subframes.
  • the uplink and downlink ratios are changed, and the timing relationship between the downlink response information and the uplink data retransmission is defined: the uplink subframe of the uplink data retransmission is the downlink of the downlink response information.
  • the first radio frame to the second radio frame, the uplink and downlink ratios are changed, and the uplink and downlink ratios of the first radio frame are compared with the uplink and downlink ratios of the second radio frame, and only the uplink subframe of the first radio frame exists.
  • the downlink subframe of the second radio frame corresponds to the case of changing to the downlink subframe of the second radio frame.
  • the downlink response information is not in the first wireless.
  • the frame is fed back; but the subframe determined according to the timing relationship defined by the uplink and downlink ratio of the first radio frame is still a downlink subframe in the second radio frame, and thus the uplink data is transmitted to the downlink.
  • the timing relationship between the response information can still be performed according to the timing relationship defined for the uplink and downlink ratio of the first radio frame, which has the advantage that the introduction of a new timing relationship can be avoided.
  • the same label is used in the second radio frame.
  • the subframe transmits the downlink response information.
  • the downlink response information is the negative acknowledgement information
  • the retransmission of the uplink data is received, where the subframe in which the uplink data retransmission is received is sent by the downlink response information.
  • the first uplink subframe that meets the time threshold requirement is met.
  • the above downlink ratio 0 is changed to the uplink and downlink ratio 2 as an example, according to the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art, and the first radio frame.
  • the downlink response information corresponding to the uplink data transmission of the subframe 7, the subframe 8, and the subframe 9 is respectively fed back in the subframe 1, the subframe 5, and the subframe 6 of the next radio frame. Therefore, in the embodiment of the present invention, the network device is also in the second wireless.
  • the subframe 1, the subframe 5, and the subframe 6 of the frame feed back the downlink response information, and the network device receives the retransmission data of the subframe 7 of the first radio frame in the subframe 7 of the second radio frame.
  • the above downlink ratio 0 is changed to the uplink and downlink ratio 1 as an example, according to the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art, and the first radio frame.
  • the downlink response information corresponding to the uplink data transmission of the subframe 7, the subframe 8, and the subframe 9 is respectively fed back in the subframe 1, the subframe 5, and the subframe 6 of the next radio frame. Therefore, in the embodiment of the present invention, the network device is also in the second wireless.
  • the subframe 1, the subframe 5, and the subframe 6 of the frame feed back the downlink response information, and the network device receives the retransmission data of the subframe 7 of the first radio frame in the subframe 7 of the second radio frame.
  • the above downlink ratio 1 is changed to the uplink and downlink ratio 2 as an example, according to the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art, and the first radio frame.
  • the downlink response information corresponding to the uplink data transmission of the subframe 7 and the subframe 8 is respectively fed back in the subframe 1 and the subframe 4 of the next radio frame. Therefore, in the embodiment of the present invention, the network device is also in the subframe 1 of the second radio frame. Frame 4 feeds back the downlink response information, and the network device receives the retransmission data of subframe 7 of the first radio frame in subframe 7 of the second radio frame.
  • the second case The first radio frame to the second radio frame, the uplink and downlink ratios are changed, and the uplink and downlink ratio of the first radio frame is compared with the uplink and downlink ratio of the second radio frame, and only the downlink subframe of the first radio frame exists. Corresponding to the case of changing to the uplink subframe of the second radio frame.
  • the subframe determined according to the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art is in the second wireless.
  • the frame may have become an uplink subframe and cannot send downlink response information.
  • the subframe that sends the downlink response information is the first that meets the time threshold requirement between the second radio frame and the subframe in which the uplink data transmission is received.
  • the downlink response information is the negative acknowledgement information
  • the retransmission of the uplink data is received, where the subframe in which the uplink data retransmission is received is sent by the downlink response information. After the subframe, the first uplink subframe that meets the time threshold requirement is met.
  • the uplink and downlink ratio 2 is changed to the uplink and downlink ratio 1, and the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art is compared with the subframe of the first radio frame. 7
  • the downlink response information corresponding to the uplink data transmission is fed back in the subframe 3 of the next radio frame.
  • the subframe 3 has been changed to the uplink subframe, and the downlink response information cannot be transmitted. Therefore, in the embodiment of the present invention, according to the timing relationship between the uplink data transmission and the downlink response information feedback defined in the embodiment of the present invention, as shown in FIG.
  • the uplink data transmission occurring in the first radio frame subframe 7 is performed.
  • the network device feeds back the corresponding downlink response information in the subframe 1 of the second radio frame, and the downlink response information defined in the embodiment of the present invention is fed back to the timing relationship between the uplink data retransmission, and the network device is in the second radio frame.
  • the subframe 7 receives the retransmission data of the subframe 7 of the first radio frame.
  • the uplink-downlink ratio 2 is changed to the uplink-downlink ratio 0, and the timing relationship defined by the uplink-downlink ratio of the first radio frame in the prior art is compared with the subframe of the first radio frame. 7
  • the downlink response information corresponding to the uplink data transmission is fed back in the subframe 3 of the next radio frame.
  • the subframe 3 has been changed to the uplink subframe, and the downlink response information cannot be transmitted.
  • the uplink data transmission occurring in the first radio frame subframe 7 is performed, and the network device is in the second The subframe 1 of the radio frame feeds back the corresponding downlink response information, and the downlink response information defined in the embodiment of the present invention is fed back to the timing relationship between the uplink data retransmissions, and the network device is Subframe 7 of the second radio frame receives retransmission data of subframe 7 of the first radio frame.
  • the uplink-downlink ratio 1 is changed to the uplink-downlink ratio 0, and the timing relationship between the uplink data transmission and the downlink response information feedback according to the embodiment of the present invention is compared with the first radio frame.
  • the downlink response information corresponding to the uplink data transmission of the subframe 7 is transmitted, and the network device feeds back the corresponding downlink response information in the subframe 1 of the second radio frame, and the downlink response information defined according to the embodiment of the present invention is fed back to the uplink data retransmission.
  • the timing relationship the network device receives the retransmission data of the subframe 7 of the first radio frame in the subframe 7 of the second radio frame;
  • the network device feeds back the corresponding downlink response information in the subframe 5 of the second radio frame, and the network device receives the retransmission data of the subframe 8 of the first radio frame in the subframe 9 of the second radio frame.
  • the uplink and downlink ratio 2 is changed to the uplink and downlink ratio 6, and the timing relationship between the uplink data transmission and the downlink response information feedback defined by the embodiment of the present invention is compared with the first radio frame.
  • the downlink response information corresponding to the uplink data transmission of the subframe 7 is transmitted, and the network device feeds back the corresponding downlink response information in the subframe 1 of the second radio frame, and the downlink response information defined according to the embodiment of the present invention is fed back to the uplink data retransmission.
  • the timing relationship the network device receives the retransmission data of the subframe 7 of the first radio frame in the subframe 8 of the second radio frame.
  • the third case the first radio frame to the second radio frame, the uplink and downlink ratios are changed, and the uplink and downlink ratio of the first radio frame is compared with the uplink and downlink ratio of the second radio frame, and there is The uplink subframe of the first radio frame is correspondingly changed to the downlink subframe of the second radio frame, and the downlink subframe of the first radio frame is correspondingly changed to the uplink subframe of the second radio frame.
  • the subframe that sends the downlink response information is the first that meets the time threshold requirement between the second radio frame and the subframe in which the uplink data transmission is received.
  • the downlink response information is the negative acknowledgement information
  • the retransmission of the uplink data is received, where the subframe in which the uplink data retransmission is received is sent by the downlink response information.
  • the first uplink subframe that meets the time threshold requirement is met. Exemplarily, as shown in FIG.
  • the uplink-downlink ratio 4 is changed to the uplink-downlink ratio 2, according to the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art, and the subframe of the first radio frame.
  • the downlink response information corresponding to the uplink data transmission the network device feeds back the corresponding downlink response information in the subframe 8 of the first radio frame, and the timing of the downlink response information defined in the embodiment of the present invention is fed back to the uplink data retransmission. Relationship, the network device receives the retransmission data of the subframe 2 of the first radio frame in the subframe 2 of the second radio frame;
  • the downlink response information corresponding to the subframe 9 of the radio frame is fed back, and the downlink response defined according to the embodiment of the present invention.
  • the information is fed back to the timing relationship between the uplink data retransmissions, and the network device receives the retransmission data of the subframe 3 of the first radio frame in the subframe 7 of the second radio frame.
  • the uplink-downlink ratio 3 is changed to the uplink-downlink ratio 1, and the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art is compared with the subframe of the first radio frame.
  • the downlink response information corresponding to the uplink data transmission the network device feeds back the corresponding downlink response information in the subframe 8 of the first radio frame, and the timing of the downlink response information defined in the embodiment of the present invention is fed back to the uplink data retransmission. Relationship, the network device receives the retransmission data of the subframe 2 of the first radio frame in the subframe 2 of the second radio frame;
  • the downlink response information corresponding to the timing of the first radio frame defined by the uplink and downlink ratio of the first radio frame is fed back, and the downlink response is defined according to the embodiment of the present invention.
  • the information is fed back to the timing relationship between the uplink data retransmissions, and the network device receives the retransmission data of the subframe 3 of the first radio frame in the subframe 3 of the second radio frame;
  • the uplink data transmitted to the downlink response information according to the embodiment of the present invention is backed by the network device in the subframe 0 of the second radio frame, and the downlink response information is further determined according to the embodiment of the present invention.
  • the response information is fed back to the timing relationship between the uplink data retransmissions, and the network device receives the retransmission data of the subframe 4 of the first radio frame in the subframe 7 of the second radio frame.
  • the uplink and downlink ratio 2 is changed to the uplink and downlink ratio 4, according to the prior art.
  • the timing relationship defined by the uplink and downlink ratio of the first radio frame, and the downlink response information corresponding to the uplink data transmission of the subframe 2 of the first radio frame, and the network device feeds back the downlink response information corresponding to the subframe 6 of the first radio frame.
  • the uplink and downlink response information defined in the embodiment of the present invention is fed back to the timing relationship between the uplink data retransmission, and the network device receives the retransmission data of the subframe 2 of the first radio frame in the subframe 2 of the second radio frame.
  • the uplink data transmission to the downlink response information inverse network device defined in the embodiment of the present invention feeds back the corresponding downlink response information in the subframe 1 of the second radio frame.
  • the uplink and downlink ratio 1 changes to the uplink and downlink ratio 3, according to the timing relationship defined by the uplink and downlink ratio of the first radio frame in the prior art, and the subframe of the first radio frame.
  • the downlink response information corresponding to the uplink data transmission the network device feeds back the corresponding downlink response information in the subframe 6 of the first radio frame, and the uplink and downlink response information defined in the embodiment of the present invention is fed back to the uplink data retransmission.
  • the network device receives the retransmission data of the subframe 6 of the first radio frame in the subframe 2 of the second radio frame;
  • the subframe 9 of the radio frame is fed back corresponding downlink acknowledgement information
  • the uplink data defined according to the embodiment of the present invention is further Transmitting to a timing relationship between the downlink response information feedback, the network device receiving the retransmission data of the subframe 3 of the first radio frame in the subframe 3 of the second radio frame;
  • the uplink data transmitted to the downlink response information according to the embodiment of the present invention is backed by the network device in the subframe 1 of the second radio frame, and the corresponding downlink acknowledgement message, packet,
  • the uplink data transmission to the downlink response information inverse network device defined in the embodiment of the present invention feeds back the corresponding downlink response information in the subframe 5 of the second radio frame.
  • the prior art is the HARQ process number pair used according to the transmission data when receiving the uplink data transmission and receiving the retransmission uplink data.
  • the received signals are combined.
  • the uplink and downlink ratios of the radio frame are changed, and the uplink data transmission and the retransmission may use different HARQ process numbers.
  • the downlink response information corresponding to the uplink data transmission of the subframe 7 of the first radio frame the network device feeds back the corresponding downlink response information in the subframe 3 of the second radio frame, and the network device is in the second radio frame.
  • the sub-frame 7 receives the retransmission data of the subframe 7 of the first radio frame, where the HARQ process number of the initial transmission of the uplink data of the subframe 7 of the first radio frame is 2, and the HARQ process number of the retransmission uplink data is 1.
  • the network device may combine the received initial transmission uplink data and the retransmission uplink data according to the timing relationship between the uplink data initial transmission and the uplink data retransmission to improve the uplink data reception performance. , the received signals are no longer combined according to the HARQ process number.
  • the embodiment of the invention provides a data transmission method, which is applicable to a user equipment.
  • the network device Before the data transmission, the network device first sends a scheduling authorization command to the user equipment, and the user equipment schedules the uplink data according to the scheduling authorization command.
  • the uplink and downlink ratios are changed, and the user equipment needs to know the uplink and downlink ratio change time in advance, and the uplink and downlink ratios before and after the change.
  • the network device can pass the proprietary RRC letter.
  • the uplink and downlink ratio change time, and the uplink and downlink ratios before and after the change are notified to the user equipment.
  • the user may also be notified by other methods, such as by using broadcast messages or physical layer signaling. device. Therefore, the user equipment can clearly indicate when the uplink response information is fed back to the network device, thereby achieving a smooth transition of the service.
  • the timing relationship between the subframe in which the uplink data is sent and the subframe in which the scheduling grant command is located is defined for the uplink and downlink ratios: the subframe in which the scheduling authorization command is located and the uplink is sent.
  • the time interval of the uplink subframe of the data meets the latest downlink subframe or special subframe of the time threshold. It can be seen that within the time threshold, the user equipment must be able to complete the receiving and parsing of the scheduling grant command at least. Generally, the user equipment completes the receiving and parsing of the scheduling authorization command.
  • the time required is related to the processing power of the device. For the TDD system of LTE, after considering the processing capability of the device, the time threshold is 4 ms, that is, 4 subframes.
  • the uplink-downlink ratio 1 is changed to the uplink-downlink ratio 2, and the uplink data sent in the subframe 2 in the second radio frame is taken as an example, and the uplink-down ratio 2 is defined according to the prior art.
  • the timing relationship between the scheduling authorization command and the uplink data transmission, the scheduling authorization command is to be received in the subframe 8 of the previous radio frame, that is, the subframe 8 of the first radio frame, but according to the uplink and downlink of the first radio frame.
  • Ratio 1 the first radio frame subframe 8 is an uplink subframe, and cannot receive a scheduling grant command.
  • the uplink-downlink ratio 2 is changed to the uplink-downlink ratio 1 to obtain the timing relationship between the subframes in which the sub-frame authority command is located in the second radio frame, and the user equipment is in the first radio frame.
  • Frame 8 receives the scheduling authorization command.
  • the timing relationship between the subframe in which the uplink data is transmitted and the subframe in which the scheduling grant command is located is determined according to the embodiment of the present invention, and the user equipment is in the first Subframe 9 of the radio frame receives a scheduling grant command.
  • the uplink-downlink ratio 2 is changed to the uplink-downlink ratio 0, so that the user equipment is in the first radio frame from the timing relationship between the subframes in which the sub-frame authority command is applied in the second radio frame.
  • Frame 8 receives the scheduling authorization command.
  • the timing relationship between the subframe in which the uplink data is transmitted and the subframe in which the scheduling grant command is located is determined according to the embodiment of the present invention, and the user equipment is in the first Subframe 9 of the radio frame receives a scheduling grant command.
  • the uplink-downlink ratio 0 is changed to the uplink-downlink ratio 2, so that the user equipment is in the first radio frame from the timing relationship between the subframes in which the subframe degree authorization command is located in the second radio frame.
  • Frame 6 receives the scheduling grant command.
  • the uplink-downlink ratio 1 is changed to the uplink-downlink ratio 0, so that the user equipment is in the first radio frame from the timing relationship between the subframes in which the sub-frame authority command is applied in the second radio frame.
  • Frame 6 receive adjustment Authorization command.
  • the timing relationship between the subframe in which the uplink data is transmitted and the subframe in which the scheduling grant command is located is determined according to the embodiment of the present invention, and the user equipment is in the first Subframe 6 of the radio frame receives a scheduling grant command.
  • the timing relationship between the subframe in which the uplink data is transmitted and the subframe in which the scheduling grant command is located is changed from the uplink-downlink ratio 0 to the uplink-downlink ratio 1, the second wireless
  • the uplink data sent in the subframe 2 in the frame, the user equipment receives the scheduling authorization command in the subframe 6 of the first radio frame, the uplink data sent in the subframe 3 in the second radio frame, and the user equipment is in the subframe of the first radio frame.
  • Frame 6 receives the scheduling authorization command.
  • the scheduling grant command corresponding to the uplink data transmission of the subframe 2 and the subframe 3 of the second radio frame is received in the subframe 6 of the first radio frame, it may be adjusted to: in the subframe 3 in the second radio frame
  • the uplink data sent by the user equipment receives the scheduling grant command in the subframe 6 of the first radio frame, and the uplink data sent in the subframe 2 in the second radio frame, the user equipment is in the subframe 5 of the first radio frame, as shown in the figure
  • the dotted line in 30 is shown.
  • the uplink subframes may be sequentially searched in the first radio frame in order from the back to the front.
  • the latest, next most recent downlink subframe or special subframe required by the time threshold is used to send a scheduling grant command.
  • the timing between the subframe in which the uplink data is transmitted and the subframe in which the scheduling grant command is located according to the first radio frame in the prior art is still shown by the dotted line at 30 in the figure. Relationship, the uplink data sent in the subframe 9 in the first radio frame, the user equipment receives the scheduling grant command in the subframe 5 of the first radio frame, and is not required to send the uplink data subframe and the scheduling authorization command as defined in the embodiment of the present invention. The limitation of the timing relationship between the subframes in which they are located.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开的数据传输方法包括:通过第一无线帧中的下行子帧或者特殊子帧接收基站发送的下行数据;在所述第二无线帧内,使用与第一无线帧的下行子帧或者所述特殊子帧的时间间隔满足时间门限要求的第一个上行子帧发送应答信息给所述基站;其中,第一定时时间为根据所述第一无线帧的上下行配比、传输下行数据的下行子帧或者特殊子帧与反馈下行数据的应答信息的上行子帧之间的时间间隔,第二无线帧为所述第一无线帧的相邻帧、且第二无线帧的上下行配比不同于第一无线帧的上下行配比。当上下行配比发生改变时,用户设备和基站之间能够正确地进行应答信息反馈,提高系统资源的使用效率。

Description

一种数据传输方法和装置
本申请要求于 2011 年 09 月 30 日提交中国专利局、 申请号为 201110293734.X,发明名称为"一种数据传输方法和装置"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
本发明实施例涉及通信技术领域, 尤其涉及一种数据传输方法和装置。
背景技术
新一代通信系统中, HARQ ( Hybrid Automatic Repeat Request , 混合自动 重传请求) 是结合 FEC ( Forward Error Correction, 前向纠错编码) 和 ARQ ( Automatic Repeat ReQuest, 自动重传请求)的混合差错控制方式。 HARQ的 主要实现过程包括: 发送端发送新数据,接收端对收到的数据进行緩存并且解 码校验, 根据校验结果向发送端发送确定(ACK )或非确定(NACK )的反馈 信息。 发送端如果收到确定的反馈信息, 则开始发送新数据; 如果发送端收到 非确定的反馈信息, 则说明发送端发送数据出错,发送端需要重新发送上次的 出错数据, 接收端用收到的重传数据和緩存中的上次出错数据进行合并解码, 解出正确的数据。
在 TDD ( Time Division Duplex, 时分双工)模式下, 一个无线帧长度为 10ms (毫秒) , 其中包含 10个子帧, 每个子帧长度均为 lms, 其中, 用于上行 数据传输的子帧称作上行子帧, 用符号 U表示, 用于下行数据传输的子帧称作 下行子帧,用符号 D表示,在下行子帧到上行子帧的转换中间还存在转换子帧, 或可以称作特殊子帧, 用符号 S表示。 LTE的 TDD系统模式支持多种不同的上 下行配比, 在下行子帧时刻, 网络设备可以向用户设备发送下行数据包; 在上 行子帧时刻, 用户设备可以向网络设备发送上行数据包。 在特殊子帧时刻, 网 络设备可以向用户设备发送下行数据包。
但是,在无线帧的上下行配比发生变化时,会存在反馈信息和重传数据无 法顺利传输的缺陷, 影响系统资源的使用效率。
发明内容
本发明实施例的目的是提供一种数据传输方法和装置,实现数据的顺利传 输。
本发明实施例的目的是通过以下技术方案实现的:
一方面, 本发明实施例提供一种数据传输方法, 包括:
通过第一无线帧中的下行子帧或者特殊子帧接收基站发送的下行数据; 当根据所述第一无线帧的第一定时时间,确定无法使用所述第一无线帧中 的上行子帧反馈所述下行数据的应答信息时, 则在第二无线帧内,使用与所述 的第一个上行子帧发送所述应答信息给所述基站;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
对应的, 本发明实施例一种数据传输装置, 包括:
接收单元,用于通过第一无线帧中的下行子帧或者特殊子帧接收基站发送 的下行数据;
处理单元,用于确定根据所述第一无线帧的第一定时时间,是否能使用所 发送单元,用于当根据所述第一无线帧的第一定时时间,确定无法使用所
时间门限要求的第一个上行子帧发送所述应答信息给所述基站;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
另一方面, 本发明实施例提供一种数据传输方法, 包括:
通过第一无线帧中的上行子帧接收用户设备发送的上行数据;
当根据所述第一无线帧的第二定时时间,确定无法使用所述第一无线帧中 内,使用与所述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的下 行子帧或者特殊子帧发送所述应答信息给所述用户设备;
其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与反馈所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
对应的, 本发明实施例提供一种数据传输装置
接收单元,用于通过第一无线帧中的上行子帧接收用户设备发送的上行数 据;
处理单元,用于确定根据所述第一无线帧的第二定时时间,是否能使用所 发送单元,用于当根据所述第一无线帧的第二定时时间,确定无法使用所 在第二无线帧内,使用与所述第一无线帧的所述上行子帧的时间间隔满足时间 门限要求的下行子帧或者特殊子帧发送所述应答信息给所述用户设备;
其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与反馈所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
另一方面, 本发明实施例提供一种数据传输方法, 包括: 根据第二无线帧的第三定时时间,确定无法通过所述第二无线帧的下行子 帧或特殊子帧接收的调度授权命令来调度所述第二无线帧的上行子帧中的上 行数据, 则在第一无线帧内,从与第二无线帧的上行子帧的时间间隔满足时间 门限要求的最近的下行子帧或者特殊子帧中接收基站发送的调度授权命令; 当成功接收到调度授权命令时,在所述第二无线帧的所述上行子帧发送所 述调度授权命令调度的上行数据给基站;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、接收调度授权命令的下行子帧或者特殊子帧与发
对应的, 本发明实施例提供一种数据传输装置, 包括:
处理单元,用于确定根据第二无线帧的第三定时时间,是否能通过所述第 二无线帧的下行子帧或特殊子帧接收的调度授权命令来调度所述第二无线帧 的上行子帧中的上行数据;
接收单元,用于根据所述第二无线帧的第三定时时间,确定无法通过所述 第二无线帧的下行子帧或特殊子帧接收的调度授权命令来调度所述第二无线 帧的上行子帧中的上行数据, 则在第一无线帧内,从与第二无线帧的上行子帧 的时间间隔满足时间门限要求的最近的下行子帧或者特殊子帧中接收基站发 送的调度授权命令;
发送单元,用于当成功接收到调度授权命令时,在所述第二无线帧的所述 上行子帧发送所述调度授权命令调度的上行数据给基站;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、接收调度授权命令的下行子帧或者特殊子帧与发
另一方面, 本发明实施例提供一种数据传输方法包括:
根据第二无线帧的第三定时时间,确定无法通过所述第二无线帧的下行子 帧或特殊子帧发送的调度授权命令来调度所述第二无线帧的上行子帧中的上 行数据, 则在第一无线帧内,使用与所述第二无线帧的上行子帧的时间间隔满 足时间门限要求的最近的下行子帧或者特殊子帧发送所述调度授权命令给所 述用户设备;
在所述第二无线帧的所述上行子帧接收所述用户设备发送的所述上行数 据;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、发送调度授权命令的下行子帧或者特殊子帧与接 收所述上行数据的上行子帧之间的时间间隔。
对应的, 本发明实施例提供一种数据传输装置, 包括:
处理单元,用于确定根据第二无线帧的第三定时时间,是否能通过所述第 二无线帧的下行子帧或特殊子帧发送的调度授权命令来调度所述第二无线帧 的上行子帧中的上行数据;
发送单元,用于根据第二无线帧的第三定时时间,确定无法通过所述第二 无线帧的下行子帧或特殊子帧发送的调度授权命令来调度所述第二无线帧的 上行子帧中的上行数据, 则在第一无线帧内,使用与所述第二无线帧的上行子 帧的时间间隔满足时间门限要求的最近的下行子帧或者特殊子帧发送所述调 度授权命令给所述用户设备;
接收单元,用于在所述第二无线帧的所述上行子帧接收所述用户设备发送 的所述上行数据;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、发送调度授权命令的下行子帧或者特殊子帧与接 收所述上行数据的上行子帧之间的时间间隔。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度、应答信息反馈以及数据重传, 因而能够更好地支持业务 的平滑过渡, 并提高系统资源的使用效率。
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,对于本领域的普通技术人员来讲,在不付出创造性劳动的前提下, 还可以根据这些附图获得其他附图。
图 1为本发明一实施例提供的数据传输方法的流程示意图一。
图 1 A为本发明另一实施例提供的数据传输方法的流程示意图二。
图 2为本发明一实施例提供的数据传输装置的构成示意图一。
图 2A为本发明另一实施例提供的数据传输装置的构成示意图二。
图 3为本发明实另一施例提供的数据传输方法的流程示意图三。
图 3A为本发明另一实施例提供的数据传输方法的流程示意图四。
图 4为本发明另一实施例提供的数据传输装置的构成示意图三。
图 4A为本发明另一实施例提供的数据传输装置的构成示意图四。
图 5为本发明另一实施例提供的数据传输方法的流程示意图五。
图 6为本发明另一实施例提供的数据传输装置的构成示意图五。
图 7为本发明另一实施例提供的数据传输方法的流程示意图六。
图 8为本发明另一实施例提供的数据传输装置的构成示意图六。
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088W0/£I0Z OAV 图 25为本发明一: 图 26为本发明一: 图 27为本发明一: 图 28为本发明一: 图 29为本发明一: 图 30为本发明一:
具体实施方式
下面结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明的实施例, 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, 都属于本发明的保护范围。
现有技术中,通常无线帧的上下行配比保持不变,通过定义好的初传数据、 反馈信息、 重传数据三项操作的时序关系, 数据可以在无线帧上顺利的传输。 但是, 当无线帧的上下行配比发生变化时, 若仍按照定义好的初传数据、 反馈 信息、重传数据三项操作的时序关系,会导致反馈信息和重传数据无法顺利传 输, 影响系统资源的使用效率。
本发明实施例的数据传输方法和装置中, 所用术语"初传数据"、 "初传数 据的子帧"以及"重传数据"、 "重传数据的子帧"作如下的理解, 如果一个数据 发送失败而需要重新传输, "初传数据"指该数据重传之前的状态, 重传数据指 该数据重传之时的状态。 用于重传该数据的子帧为重传数据的子帧, 重传之前 发送该数据的子帧为初传数据的子帧。 可以理解, 每个下行子帧、 上行子帧及 特殊子帧既可以用于初传数据, 也可以用于重传数据。
本领域技术人员应当知道, HARQ混合自动重传技术可以适用于 LTE ( Evolved Universal Terrestrial Radio Access , 演进全球地面无线接入 )协议 , 以及其它无线通信协议中,因此使用混合重传技术的各种通信系统可以适用本 发明实施例的数据传输方法或装置。
如图 1所示, 本发明实施例提供一种数据传输方法, 包括:
步骤 101、 通过第一无线帧中的下行子帧或者特殊子帧接收基站发送的下 行数据。
步骤 102、 当根据所述第一无线帧的第一定时时间, 确定无法使用所述第
间门限要求的第一个上行子帧发送所述应答信息给所述基站;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
较佳的, 所述时间门限为 4ms 。
本发明实施例的数据传输方法, 当根据所述第一无线帧的第一定时时间, 确定可以使用所述第一无线帧中的上行子帧反馈所述下行数据的应答信息时, 则在所述第一无线帧的所述上行子帧中发送所述应答信息给所述基站。
可选的, 所述第一无线帧包括一个无线帧或两个相邻无线帧。
可选的, 所述第二无线帧包括一个无线帧或两个相邻无线帧。
可选的, 本发明实施例的数据传输方法, 还可以包括:
当使用相同的上行子帧反馈多个下行子帧和 /或特殊子帧的下行数据的应 答信息时, 确定所述多个下行子帧和 /或特殊子帧构成的子帧集合;
获取为所述子帧集合所包含的子帧分配的映射标号。
其中,基站可以为子帧集合所包含的子帧分配的映射标号,用户设备可以 从基站初获取为子帧集合所包含的子帧分配的映射标号。
进一步的, 本发明实施例的数据传输方法, 还可以包括:
从所述第一无线帧中的下行子帧或者特殊子帧接收所述基站发送的调度 授权命令, 所述调度授权命令用于调度下行数据传输;
根据所述调度授权命令占用的控制信道单元 CCE索引和所述下行子帧或 者特殊子帧的映射标号 ,获取为所述下行数据传输分配的上行应答信道资源索 引;
使用所述上行应答信道资源索引对应的信道资源, 发送所述应答信息给 所述基站。
可见,考虑到在相同上行子帧有多个用户设备同时反馈上行应答信息,则 需要为这多个用户设备分别分配不同的上行应答信道资源。
可选的, 本发明实施例的数据传输方法, 还可以包括:
接收所述基站发送无线资源控制 RRC信令,所述 RRC信令携带发生上下行 配比改变的时间信息, 以及所述第二无线帧的上下行配比信息。
可见,基站可以通过专有 RRC信令在上下行配比发生改变之前,将上下行 配比改变时刻, 以及改变前后的上下行配比通知用户设备。 可以替换的, 也可 以通过其它方法, 如通过广播消息或物理层信令来通知用户设备。
从而,用户设备能明确在什么时间向基站反馈上行应答信息,从而实现业 务的平滑过渡。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度、 应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统资源的使用效率。
如图 1A所示, 本发明实施例提供一种数据传输方法, 包括: 户设备。
步骤 112、 当根据所述第一无线帧的第一定时时间, 确定无法使用所述第 一无线帧中的上行子帧接收所述下行数据的应答信息时, 则在第二无线帧内, 间门限要求的第一个上行子帧接收所述用户设备发送的所述下行数据的应答 信息;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
较佳的, 所述时间门限为 4ms 。 本发明实施例的数据传输方法, 当根据所述第一无线帧的第一定时时间, 确定可以使用所述第一无线帧中的上行子帧接收所述下行数据的应答信息时, 通过所述第一无线帧的所述上行子帧接收所述用户设备发送的所述应答信息。
可选的, 所述第一无线帧包括一个无线帧或两个相邻无线帧。
可选的, 所述第二无线帧包括一个无线帧或两个相邻无线帧。
可选的, 本发明实施例的数据传输方法, 还可以包括:
当相同的上行子帧反馈多个下行子帧和 /或特殊子帧的下行数据的应答信 息时, 确定所述多个下行子帧和 /或特殊子帧构成的子帧集合;
为所述子帧集合所包含的子帧分配映射标号。
本发明实施例的数据传输方法, 还可以包括:
通过所述第一无线帧中的下行子帧或者特殊子帧接收发送调度授权命令 给所述用户设备, 所述调度授权命令用于调度下行数据传输;
根据所述调度授权命令占用的控制信道单元 CCE索引和所述下行子帧或 者特殊子帧的映射标号 ,获取为所述下行数据传输分配的上行应答信道资源索 引;
根据所述上行应答信道资源索引对应的信道资源,获取所述用户设备发送 的应答信息。
可选的, 本发明实施例的数据传输方法, 还可以包括:
发送无线资源控制 RRC信令给用户设备,所述 RRC信令携带发生上下行配 比改变的时间信息, 以及所述第二无线帧的上下行配比信息。
可见,基站可以通过专有 RRC信令在上下行配比发生改变之前,将上下行 配比改变时刻, 以及改变前后的上下行配比通知用户设备。 可以替换的, 也可 以通过其它方法, 如通过广播消息或物理层信令来通知用户设备。 从而, 用户 设备能明确在什么时间向基站反馈上行应答信息, 从而实现业务的平滑过渡。
如图 2所示,对应图 1所示的数据传输方法,本发明实施例提供一种数据传 输装置, 包括:
接收单元 201 , 用于通过第一无线帧中的下行子帧或者特殊子帧接收基站 发送的下行数据。
处理单元 202, 用于确定根据所述第一无线帧的第一定时时间, 是否能使 发送单元 203 , 用于当根据所述第一无线帧的第一定时时间, 确定无法使
满足时间门限要求的第一个上行子帧发送所述应答信息给所述基站;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
本发明实施例的数据传输装置可以单独设置, 或者与用户设备设置于一 体。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等于所述 时间门限。 所述时间门限为 4ms 。
可选的, 发送单元 203 , 还用于当根据所述第一无线帧的第一定时时间, 确定可以使用所述第一无线帧中的上行子帧反馈所述下行数据的应答信息时, 则在所述第一无线帧的所述上行子帧中发送所述应答信息给所述基站。
可选的, 所述第一无线帧包括一个或两个相邻无线帧。
可选的, 所述第二无线帧包括一个或两个相邻无线帧。 本发明实施例的数据传输装置, 还可以包括:
确定单元, 用于当使用相同的上行子帧反馈多个下行子帧和 /或特殊子帧 的下行数据的应答信息时, 确定所述多个下行子帧和 /或特殊子帧构成的子帧 集合。
获取单元, 用于获取为所述子帧集合所包含的子帧分配的映射标号。 可选的, 接收单元 201 , 还可以用于从所述第一无线帧中的下行子帧或者 特殊子帧接收所述基站发送的调度授权命令,所述调度授权命令用于调度下行 数据传输。
发送单元 203 , 还可以用于根据所述调度授权命令占用的控制信道单元 CCE索引和所述下行子帧或者特殊子帧的映射标号,获取为所述下行数据传输 分配的上行应答信道资源索引 ,使用所述上行应答信道资源索引对应的信道资 源, 发送所述应答信息给所述基站。
可选的, 接收单元 201 , 还可以用于接收所述基站发送无线资源控制 RRC 信令, 所述 RRC信令携带发生上下行配比改变的时间信息, 以及所述第二无线 帧的上下行配比信息。
本发明实施例的数据传输装置用于实现图 1对应的数据传输方法, 本发明 实施例的数据传输装置及其构成可以对应参考图 1对应的数据传输方法执行的 动作得以理解, 在此不再赘述。
对应的, 如图 2A所示, 对应图 1A所示的数据传输方法, 本发明实施例提 供一种数据传输装置, 包括:
发送单元 211 , 用于通过第一无线帧中的下行子帧或者特殊子帧发送下行 数据给用户设备。
处理单元 212, 用于确定根据所述第一无线帧的第一定时时间, 是否能使 用所述第一无线帧中的上行子帧接收所述下行数据的应答信息。
接收单元 213 , 用于当根据所述第一无线帧的第一定时时间, 确定无法使 用所述第一无线帧中的上行子帧接收所述下行数据的应答信息时,则在第二无 满足时间门限要求的第一个上行子帧接收所述用户设备发送的所述下行数据 的应答信息;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
本发明实施例的数据传输装置可以单独设置,或者与网络设备,如基站设 置于一体。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
较佳的, 所述时间门限为 4ms 。
本发明实施例的数据传输装置, 接收单元 212, 还可以用于, 当根据所述 第一无线帧的第一定时时间,确定可以使用所述第一无线帧中的上行子帧接收 所述下行数据的应答信息时,通过所述第一无线帧的所述上行子帧接收所述用 户设备发送的所述应答信息。
可选的, 所述第一无线帧包括一个无线帧或两个相邻无线帧。
可选的, 所述第二无线帧包括一个无线帧或两个相邻无线帧。
本发明实施例的数据传输装置, 还可以包括:
确定单元, 用于当相同的上行子帧反馈多个下行子帧和 /或特殊子帧的下 行数据的应答信息时, 确定所述多个下行子帧和 /或特殊子帧构成的子帧集合。 分配单元, 用于为所述子帧集合所包含的子帧分配映射标号。 本发明实施例的数据传输装置, 发送单元 211 , 还可以用于通过所述第一 无线帧中的下行子帧或者特殊子帧发送调度授权命令给所述用户设备,所述调 度授权命令用于调度下行数据传输;
接收单元 213 , 还可以用于根据所述调度授权命令占用的控制信道单元
CCE索引和所述下行子帧或者特殊子帧的映射标号 ,获取为所述下行数据传输 分配的上行应答信道资源索引 ,根据所述上行应答信道资源索引对应的信道资 源, 获取所述用户设备发送的应答信息。
本发明实施例的数据传输装置, 发送单元 211 , 还可以用于发送无线资源 控制 RRC信令给用户设备, 所述 RRC信令携带发生上下行配比改变的时间信 息, 以及所述第二无线帧的上下行配比信息。
本发明实施例的数据传输装置用于实现图 1A对应的数据传输方法, 本发 明实施例的数据传输装置及其构成可以对应参考图 1A对应的数据传输方法中 执行的动作得以理解, 在此不再赘述。
如图 3所示, 本发明实施例提供一种数据传输方法, 包括:
步骤 301、 通过第一无线帧中的上行子帧接收用户设备发送的上行数据。 步骤 302、 当根据所述第一无线帧的第二定时时间, 确定无法使用所述第 二无线帧内,使用与所述第一无线帧的所述上行子帧的时间间隔满足时间门限 要求的下行子帧或者特殊子帧发送所述应答信息给所述用户设备;
其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与反馈所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。 由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
可选的, 所述时间门限为 4ms 。
可选的,本发明实施例的数据传输方法, 当根据所述第一无线帧的第二定 时时间,确定可以使用所述第一无线帧中的下行子帧或者特殊子帧反馈所述上 行数据的应答信息时,则在所述第一无线帧的所述下行子帧或者所述特殊子帧 发送所述上行数据的应答信息给所述用户设备。
可选的, 本发明实施例的数据传输方法, 在所述第二无线帧内, 使用与所 述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的下行子帧或者 特殊子帧发送所述应答信息给所述用户设备, 可以包括:
在从所述第一无线帧的上下行配比变化为所述第二无线帧的上下行配比 的过程中,当仅存在第一无线帧的上行子帧对应变化为第二无线帧的下行子帧 时 ,所述与所述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的下 行子帧或者特殊子帧,为根据所述第一无线帧的第二定时时间确定的下行子帧 或者特殊子帧;
或者,在从所述第一无线帧的上下行配比变化为所述第二无线帧的上下行 配比的过程中,当存在第一无线帧的至少一个下行子帧对应变化为第二无线帧 的上行子帧时,所述与所述第一无线帧的所述上行子帧的时间间隔满足时间门 限要求的下行子帧或者特殊子帧,为与所述第一无线帧的所述上行子帧的时间 间隔满足时间门限要求的第一个下行子帧或者特殊子帧。
可选的, 本发明实施例的数据传输方法, 还可以包括:
当所述上行数据的应答信息为 NACK时,从与所述反馈所述上行数据的应 答信息的所述下行子帧或者所述特殊子帧的时间间隔满足时间门限要求的第 一个上行子帧中接收所述用户设备重新发送的所述上行数据。
可选的, 本发明实施例的数据传输方法, 还可以包括:
根据所述发送上行数据与重新发送所述上行数据的时间关系 ,合并接到的 所述用户设备发送的上行数据与所述用户设备重新发送的所述上行数据。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度、应答信息反馈以及数据重传, 因而能够更好地支持业务 的平滑过渡, 并提高系统资源的使用效率。
如图 3A所示, 本发明实施例提供一种数据传输方法, 包括:
步骤 311、 通过第一无线帧中的上行子帧发送上行数据给基站。
步骤 312、 当根据所述第一无线帧的第二定时时间, 确定无法使用所述第 一无线帧中的下行子帧或者特殊子帧接收所述上行数据的应答信息时,则在第 二无线帧内,通过与所述第一无线帧的所述上行子帧的时间间隔满足时间门限 要求的下行子帧或者特殊子帧接收基站发送的所述上行数据的应答信息; 其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与接收所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。 可选的, 所述时间门限为 4ms 。
可选的, 本发明实施例的数据传输方法, 还可以包括:
当根据所述第一无线帧的第二定时时间,确定可以使用所述第一无线帧中 的下行子帧或者特殊子帧接收所述上行数据的应答信息时 ,则在所述第一无线 帧的所述下行子帧或者所述特殊子帧接收基站发送的所述上行数据的应答信 息。
可选的, 本发明实施例的数据传输方法, 在所述第二无线帧内, 通过与所 述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的下行子帧或者 特殊子帧接收基站发送的所述上行数据的应答信息, 可以包括:
在从所述第一无线帧的上下行配比变化为所述第二无线帧的上下行配比 的过程中,当仅存在第一无线帧的上行子帧对应变化为第二无线帧的下行子帧 时 ,所述与所述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的下 行子帧或者特殊子帧,为根据所述第一无线帧的第二定时时间确定的下行子帧 或者特殊子帧;
或者,在从所述第一无线帧的上下行配比变化为所述第二无线帧的上下行 配比的过程中,当存在第一无线帧的至少一个下行子帧对应变化为第二无线帧 的上行子帧时,所述与所述第一无线帧的所述上行子帧的时间间隔满足时间门 限要求的下行子帧或者特殊子帧,为与所述第一无线帧的所述上行子帧的时间 间隔满足时间门限要求的第一个下行子帧或者特殊子帧。
可选的, 本发明实施例的数据传输方法, 还可以包括:
当所述上行数据的应答信息为 NACK时,通过与所述反馈所述上行数据的 应答信息的所述下行子帧或者所述特殊子帧的时间间隔满足时间门限要求的 第一个上行子帧重新发送所述上行数据给基站。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度、应答信息反馈以及数据重传, 因而能够更好地支持业务 的平滑过渡, 并提高系统资源的使用效率。 如图 4所示,对应于图 3所示的数据传输方法,本发明实施例提供一种数据 传输装置, 包括:
接收单元 401 , 用于通过第一无线帧中的上行子帧接收用户设备发送的上 行数据。
处理单元 402 , 用于确定根据所述第一无线帧的第二定时时间, 是否能使 发送单元 403 , 用于当根据所述第一无线帧的第二定时时间, 确定无法使 时, 则在第二无线帧内,使用与所述第一无线帧的所述上行子帧的时间间隔满 足时间门限要求的下行子帧或者特殊子帧发送所述应答信息给所述用户设备; 其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与反馈所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
本发明实施例的数据传输装置可以单独设置,或者与网络设备,如基站设 置于一体。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
可选的, 所述时间门限为 4ms 。
可选的, 发送单元 403 , 还可以用于当根据所述第一无线帧的第二定时时 据的应答信息时,则在所述第一无线帧的所述下行子帧或者所述特殊子帧发送 所述上行数据的应答信息给所述用户设备。
可选的, 发送单元 403 , 还可以具体用于在从所述第一无线帧的上下行配 比变化为所述第二无线帧的上下行配比的过程中,当仅存在第一无线帧的上行 子帧对应变化为第二无线帧的下行子帧时,所述与所述第一无线帧的所述上行 子帧的时间间隔满足时间门限要求的下行子帧或者特殊子帧,为根据所述第一 无线帧的第二定时时间确定的下行子帧或者特殊子帧。
或者, 发送单元 403 , 还可以具体用于在从所述第一无线帧的上下行配比 变化为所述第二无线帧的上下行配比的过程中,当存在第一无线帧的至少一个 下行子帧对应变化为第二无线帧的上行子帧时,所述与所述第一无线帧的所述 上行子帧的时间间隔满足时间门限要求的下行子帧或者特殊子帧,为与所述第 一无线帧的所述上行子帧的时间间隔满足时间门限要求的第一个下行子帧或 者特殊子帧。
可选的, 接收单元 401 , 还可以用于当所述上行数据的应答信息为 NACK 时,从与所述反馈所述上行数据的应答信息的所述下行子帧或者所述特殊子帧 的时间间隔满足时间门限要求的第一个上行子帧中接收所述用户设备重新发 送的所述上行数据。
可选的, 本发明实施例的数据传输装置, 还可以包括:
合并单元,用于根据所述发送上行数据与重新发送所述上行数据的时间关 系,合并接到的所述用户设备发送的上行数据与所述用户设备重新发送的所述 上行数据。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度、应答信息反馈以及数据重传, 因而能够更好地支持业务 的平滑过渡, 并提高系统资源的使用效率。
本发明实施例的数据传输装置用于实现图 3对应的数据传输方法, 本发明 实施例的数据传输装置及其构成可以对应参考图 3对应的数据传输方法中执行 的动作得以理解, 在此不再赘述。 如图 4A所示, 对应于图 3A所示的数据传输方法, 本发明实施例提供一种 数据传输装置, 包括:
发送单元 411 , 用于通过第一无线帧中的上行子帧发送上行数据给基站。 处理单元 212, 用于确定根据所述第一无线帧的第二定时时间, 是否能使 用使用所述第一无线帧中的下行子帧或者特殊子帧接收所述上行数据的应答 信息。
接收单元 413 , 用于当根据所述第一无线帧的第二定时时间, 确定无法使 用所述第一无线帧中的下行子帧或者特殊子帧接收所述上行数据的应答信息 时, 则在第二无线帧内,通过与所述第一无线帧的所述上行子帧的时间间隔满 足时间门限要求的下行子帧或者特殊子帧接收基站发送的所述上行数据的应 答信息;
其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与反馈所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
本发明实施例的数据传输装置可以单独设置, 或者与用户设备设置于一 体。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的应答信息反馈, 因而能够更好地支持业务的平滑过渡, 并提高系统 资源的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
可选的, 所述时间门限为 4ms 。
可选的, 本发明实施例的数据传输装置, 接收单元 412 , 还可以用于, 当 根据所述第一无线帧的第二定时时间,确定可以使用所述第一无线帧中的下行 子帧或者特殊子帧接收所述上行数据的应答信息时,则在所述第一无线帧的所 述下行子帧或者所述特殊子帧接收基站发送的所述上行数据的应答信息。
可选的, 本发明实施例的数据传输装置, 接收单元 412 , 还可以用于在从 所述第一无线帧的上下行配比变化为所述第二无线帧的上下行配比的过程中, 当仅存在第一无线帧的上行子帧对应变化为第二无线帧的下行子帧时,所述与 所述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的下行子帧或 者特殊子帧,为根据所述第一无线帧的第二定时时间确定的下行子帧或者特殊 子帧。
或者, 接收单元 412, 还可以用于在从所述第一无线帧的上下行配比变化 为所述第二无线帧的上下行配比的过程中,当存在第一无线帧的至少一个下行 子帧对应变化为第二无线帧的上行子帧时,所述与所述第一无线帧的所述上行 子帧的时间间隔满足时间门限要求的下行子帧或者特殊子帧,为与所述第一无 线帧的所述上行子帧的时间间隔满足时间门限要求的第一个下行子帧或者特 殊子帧。
可选的, 本发明实施例的数据传输装置, 发送单元 4114, 还可以用于当所 述上行数据的应答信息为 NACK时,通过与所述反馈所述上行数据的应答信息 的所述下行子帧或者所述特殊子帧的时间间隔满足时间门限要求的第一个上 行子帧重新发送所述上行数据给基站。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度、应答信息反馈以及数据重传, 因而能够更好地支持业务 的平滑过渡, 并提高系统资源的使用效率。
本发明实施例的数据传输装置用于实现图 3A对应的数据传输方法, 本发 明实施例的数据传输装置及其构成可以对应参考图 3A对应的数据传输方法中 执行的动作得以理解, 在此不再赘述。
如图 5所示, 本发明实施例提供一种数据传输方法, 包括: 501、 根据第二无线帧的第三定时时间, 确定无法通过所述第二无线帧的 下行子帧或特殊子帧接收的调度授权命令来调度所述第二无线帧的上行子帧 中的上行数据, 则在第一无线帧内,从与第二无线帧的上行子帧的时间间隔满 足时间门限要求的最近的下行子帧或者特殊子帧中接收基站发送的调度授权 命令。
502、 当成功接收到调度授权命令时, 在所述第二无线帧的所述上行子帧 发送所述调度授权命令调度的上行数据给基站;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、接收调度授权命令的下行子帧或者特殊子帧与发
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度, 因而能够更好地支持业务的平滑过渡, 并提高系统资源 的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
可选的, 所述时间门限为 4ms 。
可选的,本发明实施例的数据传输方法, 当根据所述第二无线帧的第三定 时时间 ,确定可以通过所述第二无线帧的下行子帧或特殊子帧接收的调度授权 命令来调度所述第二无线帧的上行子帧中的上行数据,则在所述第二无线帧的 所述下行子帧或者所述特殊子帧接收调度授权命令,在所述第二无线帧的所述 上行子帧发送所述上行数据。
如图 6所示, 本发明实施例提供一种数据传输装置, 包括:
处理单元 601 , 用于确定根据第二无线帧的第三定时时间, 是否能通过所 述第二无线帧的下行子帧或特殊子帧接收的调度授权命令来调度所述第二无 线帧的上行子帧中的上行数据。
接收单元 602 , 用于根据第二无线帧的第三定时时间, 确定无法通过所述 第二无线帧的下行子帧或特殊子帧接收的调度授权命令来调度所述第二无线 帧的上行子帧中的上行数据, 则在第一无线帧内,从与第二无线帧的上行子帧 的时间间隔满足时间门限要求的最近的下行子帧或者特殊子帧中接收基站发 送的调度授权命令。
发送单元 603 , 用于当成功接收到调度授权命令时, 在所述第二无线帧的 所述上行子帧发送所述调度授权命令调度的上行数据给基站;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、接收调度授权命令的下行子帧或者特殊子帧与发
本发明实施例的数据传输装置可以单独设置, 或者与用户设备设置于一 体。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度, 因而能够更好地支持业务的平滑过渡, 并提高系统资源 的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
可选的, 所述时间门限为 4ms。
可选的, 接收单元 602 , 还可以用于当根据所述第二无线帧的第三定时时 间 ,确定可以通过所述第二无线帧的下行子帧或特殊子帧接收的调度授权命令 来调度所述第二无线帧的上行子帧中的上行数据,则在所述第二无线帧的所述 下行子帧或者所述特殊子帧接收调度授权命令。
本发明实施例的数据传输装置用于实现图 5对应的数据传输方法, 本发明 实施例的数据传输装置及其构成可以对应参考图 5对应的数据传输方法中执行 的动作得以理解, 在此不再赘述。
如图 7所示, 本发明实施例提供一种数据传输方法, 包括:
701、 根据第二无线帧的第三定时时间, 确定无法通过所述第二无线帧的 下行子帧或特殊子帧发送的调度授权命令来调度所述第二无线帧的上行子帧 中的上行数据, 则在第一无线帧内,使用与所述第二无线帧的上行子帧的时间 间隔满足时间门限要求的最近的下行子帧或者特殊子帧发送所述调度授权命 令给所述用户设备。
702、 在所述第二无线帧的所述上行子帧接收所述用户设备发送的所述上 行数据;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、发送调度授权命令的下行子帧或者特殊子帧与接 收所述上行数据的上行子帧之间的时间间隔。
基站需要在第二无线帧的上行子帧调度用户设备的上行数据传输。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度, 因而能够更好地支持业务的平滑过渡, 并提高系统资源 的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。
可选的, 所述时间门限为 4ms。
可选的,本发明实施例的数据传输方法, 当根据所述第二无线帧的第三定 时时间,确定可以通过所述第二无线帧的下行子帧或特殊子帧发送的调度授权 命令来调度所述第二无线帧的上行子帧中的上行数据,则在所述第二无线帧的 所述下行子帧或者所述特殊子帧发送调度授权命令,在所述第二无线帧的所述 上行子帧接收所述上行数据。
如图 8所示, 对应的, 本发明实施例提供一种数据传输装置, 包括: 处理单元 801 , 用于确定根据第二无线帧的第三定时时间, 是否能通过所 述第二无线帧的下行子帧或特殊子帧发送的调度授权命令来调度所述第二无 线帧的上行子帧中的上行数据。
发送单元 802, 用于根据所述第二无线帧的第三定时时间, 确定无法通过 所述第二无线帧的下行子帧或特殊子帧发送的调度授权命令来调度所述第二 无线帧的上行子帧中的所述上行数据, 则在第一无线帧内,使用与所述第二无 线帧的上行子帧的时间间隔满足时间门限要求的最近的下行子帧或者特殊子 帧发送所述调度授权命令给所述用户设备。
接收单元 803 , 用于在所述第二无线帧的所述上行子帧接收所述用户设备 发送的所述上行数据;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、发送调度授权命令的下行子帧或者特殊子帧与接 收所述上行数据的上行子帧之间的时间间隔。
本发明实施例的数据传输装置可以单独设置,或者与网络设备,如基站设 置于一体。
由上述本发明实施例提供的技术方案可以看出, 当上下行配比发生改变 时,特别是上下行配比变化较为频繁时, 用户设备和网络设备之间能够正确地 进行相应的数据调度, 因而能够更好地支持业务的平滑过渡, 并提高系统资源 的使用效率。
其中, 所述时间间隔满足时间门限要求, 包括: 所述时间间隔大于或者等 于所述时间门限。 可选的, 所述时间门限为 4ms。
可选的, 发送单元 806送的, 第二、 传输上行数据要求的一个 1 , 还可以用 于当根据所述第二无线帧的第三定时时间,确定可以通过所述第二无线帧的下 行子帧或特殊子帧发送的调度授权命令来调度所述第二无线帧的上行子帧中 的所述上行数据,则在所述第二无线帧的所述下行子帧或者所述特殊子帧发送 调度授权命令。
本发明实施例的数据传输装置用于实现图 7对应的数据传输方法, 本发明 实施例的数据传输装置及其构成可以对应参考图 7对应的数据传输方法中执行 的动作得以理解, 在此不再赘述。
下面以 LTE的 TDD系统的具体实施例, 说明本发明实施例的数据传输方 法, 其中, 时间门限为 4ms, 所参考的附图中虚线表示上下行配比改变时刻, 虚线左侧为第一无线帧, 虚线右侧为第二无线帧, 下文不再赘述。
实施例一
本发明实施例提供一种数据传输方法, 适用于用户设备。 具体的, 用户设 备接收网络设备(如基站)发送的下行数据, 判断是否正确接收, 并生成相应 的上行应答信息, 上行应答信息包括 ACK ( Acknowledgment, 肯定应答) 或 者 NACK ( Negative Acknowledgment, 否定应答) , 用户设备发送上行应答信 息给基站。 本发明实施例提供的数据传输方法中,上下行配比发生改变,用户设备需 要提前获知上下行配比改变时刻, 以及改变前后的上下行配比, 可选的, 网络 设备可以通过专有 RRC ( Radio Resource Control, 无线资源控制)信令在上下 行配比发生改变之前,将上下行配比改变时刻, 以及改变前后的上下行配比通 知用户设备, 当然, 也可以通过其它方法, 如通过广播消息或物理层信令来通 知用户设备。从而,用户设备能明确在什么时间向网络设备反馈上行应答信息, 从而实现业务的平滑过渡。 本发明实施例提供的数据传输方法中,针对上下行配比发生改变,定义了 下行数据传输到上行应答信息反馈之间的定时关系:发送上行应答信息的上行 子帧为与下行数据传输的子帧之间满足时间门限的第一个上行子帧, 可见,在 时间门限内, 用户设备至少要能够完成下行数据的接收、 并根据正确接收与否 来生成相应的上行应答信息。通常, 用户设备完成下行数据接收并生成上行应 答信息所需要的时间, 与器件的处理能力有关。 对于 LTE的 TDD系统, 在考虑 器件处理能力后, 所述时间门限被设置为 4ms, 即 4个子帧。
下面分两种情况,来详细描述本发明实施例的数据传输方法中下行数据传 输到上行应答信息反馈之间的定时关系。
( 1 )第一种情况:
示例性的, 如图 9所示, 第一无线帧的上下行配比为 1 , 第二无线帧的上下 行配比为 2, 第一无线帧到第二无线帧, 上下行配比发生改变。 上下行配比如 下表 1所示:
表 1示意出 LTE的 TDD系统所支持的上下行配比:
Figure imgf000031_0001
表 2示意出上下行配比所定义的传输下行数据的下行子帧或者特殊子帧与反馈所述下 行数据的应答信息的上行子帧之间的时间间隔:
Figure imgf000032_0001
其中,子帧索引指示的子帧为用于反馈上行应答信息的上行子帧,子帧索 引与上下行配比共同指示所得到的数字,每个数字对应了一个传输下行数据的 下行子帧或者特殊子帧, 具体的, 所对应的下行子帧或者特殊子帧, 是从反馈 上行应答信息的上行子帧开始,往前数与数字给出的取值对应个数的子帧后所 获得的那个子帧。 如以上下行配比 2为例, 子帧 2对应 4个数字 {8、 7、 4、 6} , 则从子帧 2往前分别数 8、 7、 4、 6个子帧, 对应的下行子帧分别为子帧 4、 子帧 5、 子帧 8和子帧 6。
如图 9所示, 由于根据第一无线帧的上下行配比为 1时,第一无线帧的上下 行配比定义的下行数据传输到上行应答信息反馈之间的定时关系(参见表 2 ), 发生在第一无线帧内子帧 5、 子帧 6和子帧 9的下行数据传输, 上行应答信息无 法在第一无线帧反馈。 因此, 本发明实施例提供的数据传输方法, 对于第一无 线帧内子帧 5、 子帧 6和子帧 9的下行数据传输, 用户设备分别在第二无线帧的 子帧 2、 子帧 2和子帧 7反馈对应的上行应答信息, 也就是, 用户设备使用与第 一无线帧内子帧 5、 子帧 6和子帧 9之间满足时间门限(4ms )要求的第一个上 行子帧发送上行应答信息。 同时, 如图 9所示, 由于根据第一无线帧的上下行配比为 1时, 根据现有技 术中第一无线帧的上下行配比定义的下行数据传输到上行应答信息反馈之间 的定时关系 (参见表 2 ) , 对于发生在第一无线帧内子帧 0、 子帧 1和子帧 4中的 下行数据传输, 上行应答信息可以在第一无线帧反馈,如可以在第一无线帧的 子帧 7和子帧 8反馈对应的上行应答信息,则用户设备分别在第一无线帧的子帧 7、 子帧 7和子帧 8反馈对应的上行应答信息。
同时,对于第二无线帧内发生的下行数据传输,如果第二无线帧后面的无 线帧没有改变的上下行配比,那么可以按照为第二无线帧的上下行配比定义的 定时关系来在相应的上行子帧反馈上行应答信息;如果第二无线帧后面的无线 应的上行子帧反馈上行应答信息。
示例性的, 如图 10所示, 第一无线帧的上下行配比为 2 , 第二无线帧的上 下行配比为 1 , 第一无线帧到第二无线帧, 上下行配比发生改变。 由于根据第 一无线帧的上下行配比为 2时, 根据现有技术中第一无线帧定义的下行数据传 输到上行应答信息反馈之间的定时关系, 发生在第一无线帧内子帧 4、 子帧 5、 子帧 6、子帧 8和子帧 9的下行数据传输, 上行应答信息无法在第一无线帧反馈。 因此,本发明实施例提供的数据传输方法,对于在第一无线帧内子帧 4、子帧 5、 子帧 6、 子帧 8和子帧 9的下行数据传输, 用户设备分别在第二无线帧的子帧 2、 子帧 2、 子帧 2、 子帧 2和子帧 3反馈对应的上行应答信息, 也就是, 用户设备使 用与第一无线帧内子帧 4、 子帧 5和子帧 6、 子帧 8和子帧 9的之间满足时间门限 ( 4ms )要求的第一个上行子帧发送上行应答信息。
同时, 如图 10所示, 由于根据第一无线帧的上下行配比为 2时, 根据现有 技术中第一无线帧的上下行配比定义的下行数据传输到上行应答信息反馈之 间的定时关系, 对于发生在第一无线帧内子帧 0、 子帧 1和子帧 3中的下行数据 传输, 上行应答信息可以在第一无线帧反馈, 如可以在第一无线帧的子帧 7反 馈对应的上行应答信息, 则用户设备分别在第一无线帧的子帧 7反馈对应的上 行应答信息。
( 2 )第二种情况: 如图 9和图 10所示, 第一无线帧和第二无线帧都只包含了一个无线帧, 如 图 11和图 12所示, 第一无线帧和第二无线帧也可以包含大于一个无线帧。
示例性的, 如图 11所示, 第一无线帧的上下行配比为 5 , 第一无线帧包含 了两个无线帧, 第二无线帧的上下行配比为 2 , 第一无线帧到第二无线帧, 上 下行配比发生改变。
由于根据第一无线帧的上下行配比为 5时, 根据现有技术中第一无线帧的 上下行配比定义的下行数据传输到上行应答信息反馈之间的定时关系,发生在 第一无线帧包含的第一个无线帧内子帧 8的下行数据传输, 可以在第一无线帧 包含的第二个无线帧内子帧 2反馈上行应答信息。 发生在第一无线帧包含的第 一个无线帧内子帧 9、 第一无线帧包含的第二个无线帧内子帧 0、 子帧 1、 子帧 3-子帧 8和子帧 9的下行数据传输,上行应答信息无法在第一无线帧反馈。因此, 本发明实施例提供的数据传输方法,对于在第一无线帧包含的第二个无线帧内 子帧 0、 子帧 1、 子帧 3-子帧 8和子帧 9的下行数据传输, 用户设备分别在第二无 线帧的子帧 2、 子帧 2、 子帧 2、 子帧 2、 子帧 2、 子帧 2、 子帧 2、 子帧 2、 子帧 2 和子帧 8反馈对应的上行应答信息。
示例性的, 如图 12所示, 第一无线帧的上下行配比为 2 , 第二无线帧的上 下行配比为 5 , 第二无线帧包含了两个无线帧, 第一无线帧到第二无线帧, 上 下行配比发生改变。
由于根据第一无线帧的上下行配比为 2时, 根据现有技术中第一无线帧的 上下行配比定义的下行数据传输到上行应答信息反馈之间的定时关系,发生在 第一无线帧内子帧 0、 子帧 1和子帧 3的下行数据传输, 可以在第一无线帧内子 帧 7反馈上行应答信息。 发生在第一无线帧内子帧 4、 子帧 5、 子帧 6、 子帧 8和 子帧 9的下行数据传输, 上行应答信息无法在第一无线帧反馈。 因此, 本发明 实施例提供的数据传输方法, 对于在在第一无线帧内子帧 4、 子帧 5、 子帧 6、 子帧 8和子帧 9的下行数据传输,用户设备分别在第二无线帧包含的第一个无线 帧的子帧 2、 子帧 2、 子帧 2、 子帧 2和第二无线帧包含的第二个无线帧的子帧 2 反馈对应的上行应答信息。 本发明实施例提供的数据传输方法中, 对于表 1所示的其它上下行配比、 以及其它未示意的上下行配比, 本发明数据传输方法都可以适用。 本发明实施例提供的数据传输方法中, 对于发生在下行子帧 A的数据传 输, 如果其对应的上行应答信息在上行子帧 B发送, 那么称下行子帧 A为上行 行关联子帧集合。
LTE的 TDD系统中, 如表 2所示, 给出了为每种上下行配比所定义的传输 帧之间的时间间隔, 即本发明实施例中的第一定时关系, 具体地, 数字给出了 间隔的子帧个数。 该表 2可以预先存储在基站和用户设备中。
如表 2所示, 以上下行配比 2为例, 子帧 2对应 4个数字 {8、 7、 4、 6} , 这 4 个数字对应的关联下行子帧分别为子帧 4、 子帧 5、 子帧 8和子帧 6 , 即子帧 2对 应的关联下行子帧集合为 {子帧 4、 子帧 5、 子帧 8和子帧 6}。
对于本发明提供的所有实施例中所提供的定时关系, 都可以按照类似表 2 所示的表格形式进行定义, 并可以预先存储在基站和用户设备中。
本发明实施例提供的数据传输方法中,对于第二无线帧中的上行子帧,其 关联下行子帧数目和关联下行子帧集合由本发明实施例定义的下行数据传输 到上行应答信息反馈之间的定时关系确定。
示例性的, 如图 9所示, 对于第二无线帧中的子帧 2, 根据本发明实施例定 义的下行数据传输到上行应答信息反馈之间的定时关系, 第二无线帧的子帧 2 只需要反馈 2个下行子帧的上行应答信息,与第二无线帧子帧 2关联的关联下行 子帧集合包括第一无线帧子帧 5和第一无线帧子帧 6。
示例性的, 仍如图 9所示, 对于第二无线帧中的子帧 7 , 不仅需要反馈第二 无线帧子帧 0、 第二无线帧子帧 1和第二无线帧子帧 3的上行应答信息, 而且, 根据本发明实施例定义的下行数据传输到上行应答信息反馈之间的定时关系, 第二无线帧的子帧 7还需要反馈第一无线帧子帧 9的上行应答信息, 可见, 与第 二无线帧中的子帧 7关联的关联下行子帧集合包括第一无线帧子帧 9、第二无线 帧子帧 0、 第二无线帧子帧 1和第二无线帧子帧 3。 在数据传输之前, 网络设备向用户设备先发送调度授权命令,调度授权命 令中包含了下行分配指示字段, 用于向用户设备指示下行调度的个数。 在 LTE 的 TDD系统中, 下行分配指示字段在每个关联下行子帧集合内进行设置,具体 地, 下行分配指示字段指示截止到当前子帧为止, 向用户设备发送的用于调度 下行数据传输的调度授权命令个数。 以图 9为例,在第一无线帧中,子帧 5和子帧 6组成了第二无线帧子帧 2的关 联下行子帧集合, 下行分配指示字段在这两个子帧内按现有规则设置。 例如, 当在第一无线帧的子帧 5和子帧 6分别发送了调度下行数据传输的调度授权命 令时,可以在子帧 5和子帧 6发送的调度授权命令中分别设置下行分配指示字段 取值为 1和 2。 本发明实施例提供的数据传输方法中,对于发生在第一无线帧和第二无线 帧的下行数据传输,通过本发明实施例提供的下行数据传输到上行应答信息反 馈之间的定时关系, 可以获取反馈上行应答信息的上行子帧。考虑到在相同上 行子帧有多个用户设备同时反馈上行应答信息,需要为这多个用户设备分别分 配不同的上行应答信道资源。 在 LTE的 TDD系统中, 为上行子帧关联的每个下行子帧, 分配了一个映射 标号 m, 具体地, 每个关联下行子帧由其对应的数字在表 2中的排序决定。 以 上下行配比 2为例, 子帧 2对应的关联下行子帧集合为 {子帧 4、 子帧 5、 子帧 8 和子帧 6} , 那么在子帧 2中获取上行应答信道资源时, 为子帧 4、 子帧 5、 子帧 8 和子帧 6分别分配了映射标号 m=0、 m=l、 m=2和 m=3。 对于在关联下行子帧 A 发送的下行数据, 基站在关联下行子帧 A还会向用户设备发送调度授权命令, 用户设备先接收调度授权命令, 再接收下行数据。根据调度授权命令占用的控 制信道单元( Control Channel Element, CCE ) 索引" 和为下行关联子帧 A分 配的映射标号 m, 用户设备和基站都可以计算获取上行应答信道资源索引
具体过程如下: 首先从 {0, 1 , 2, 3}中选出一个 p值, 使得^≤"CC£ <^+1 ; 通过式 = (M - m - \) x Np + m x Np+l + nCCE + N CCH即可计算获得分配的应答信道资源 索引, 其中 = max{0,L[O(i2x 4)]/36j , 为下行系统带宽, M为上行子帧 B 的关联下行子帧的数目, 为网络设备广播通知的一个偏移值。 在上行子 帧 B, 用户设备使用计算获得的上行应答信道资源反馈上行应答信息, 基站使 用计算获得的上行应答信道资源接收用户设备反馈的上行应答信息。 本发明实施例提供的数据传输方法中,对于第二无线帧中的上行子帧,其 关联下行子帧数目和关联下行子帧集合由本发明实施例定义的下行数据传输 到上行应答信息反馈之间的定时关系确定 ,并根据关联下行子帧集合对每个关 联下行子帧的排序来分配映射标号 m。 根据调度授权命令占用的 CCE索引 n^ 和为下行关联子帧 A分配的映射标号 m, 用户设备和基站都可以按照前面所述 方法来计算获取上行应答信道资源索引" COT。 以图 9为例, 第二无线帧子帧 2 的关联下行子帧集合为{第一无线帧子帧 5、 第一无线帧子帧 6}或者 {第一无线 帧子帧 6、第一无线帧子帧 5} , 那么可以分别为第一无线帧子帧 5和第一无线帧 子帧 6分配映射标号 m=0和 m=l , 或者分配映射标号 m=l和 m=0。
本领域技术人员可以知道, 基站发送下行数据(初传数据)给用户设备, 用户设备接收基站发送的下行数据, 判断是否正确接收, 并生成相应的上行应 答信息, 当上行应答信息为 NACK时, 用户设备发送上行应答信息 NACK给基 站, 基站重新发送下行数据(重传数据)给用户设备。 对于下行数据传输, 其 数据重传是完全基于调度授权命令的,下行数据传输可以与调度授权命令在相 同下行子帧发送,不需要定义上行应答信息反馈到下行数据重传之间的定时关 系。 因此, 本发明实施例的数据传输方法, 没有严格限制上行应答信息反馈到 下行数据重传之间的定时关系必须满足上述时间门限。
实施例二 本发明实施例提供一种数据传输方法, 适用于网络设备(如基站)。 具体 的, 网络设备接收用户设备发送的上行数据, 判断是否正确接收, 并生成相应 的下行应答信息 (ACK或者 NACK ) , 基站发送下行应答信息给用户设备。 本发明实施例的数据传输方法中,上下行配比发生改变,用户设备需要提 前获知上下行配比改变时刻, 以及改变前后的上下行配比, 可选的, 网络设备 可以通过专有 RRC信令在上下行配比发生改变之前, 将上下行配比改变时刻 , 以及改变前后的上下行配比通知用户设备, 当然, 也可以通过其它方法, 如通 过广播消息或物理层信令来通知用户设备。从而, 用户设备能明确在什么时间 向网络设备反馈上行应答信息, 从而实现业务的平滑过渡。
本发明实施例的数据传输方法中,针对上下行配比发生改变,定义了上行 数据传输到下行应答信息反馈之间的定时关系:发送下行应答信息的下行子帧 或特殊子帧为与上行数据传输的子帧之间满足时间门限的下行子帧或特殊子 帧, 可见, 在时间门限内, 网络设备至少要能够完成上行数据的接收、 并根据 正确接收与否来生成相应的下行应答信息。通常, 网络设备完成上行数据接收 并生成下行应答信息所需要的时间, 与器件的处理能力有关。尽管网络设备的 器件处理能力通常远大于用户设备的器件处理能力,但网络设备需要接收所有 用户设备的上行数据并生成相应下行应答信息,用户设备只需要接收属于自己 的下行数据并生成上行应答信息。 对于 LTE的 TDD系统, 在考虑器件处理能力 后, 所述时间门限为 4ms、 即 4个子帧。
本发明实施例的数据传输方法中,上下行配比发生改变,定义了下行应答 信息反馈到上行数据重传之间的定时关系:上行数据重传的上行子帧为与发送 下行应答信息的下行子帧或特殊子帧之间满足时间门限的第一个上行子帧。
下面分三种情况,来详细描述本发明实施例的数据传输方法中反馈下行应 答信息的子帧与上行数据传输的子帧之间定时关系。
( 1 )第一种情况:
第一无线帧到第二无线帧,上下行配比发生改变,将第一无线帧的上下行 配比与第二无线帧的上下行配比进行比较,只存在第一无线帧的上行子帧对应 改变成第二无线帧的下行子帧的情况。
在第一种情况下, 由于只存在由上行子帧改变成下行子帧的情况,尽管根 据现有技术中第一无线帧的上下行配比定义的定时关系,其下行应答信息不在 第一无线帧来反馈;但是根据第一无线帧的上下行配比定义的定时关系所确定 的那个子帧,在第二无线帧中仍然是下行子帧, 因而所述上行数据传输到下行 应答信息之间的定时关系仍然可以按照为第一无线帧的上下行配比定义的定 时关系来进行, 这样做的好处是可以避免引入新的定时关系。 即在第一种情况 下,对所述上行数据传输,根据为第一无线帧的上下行配比所定义的上行数据 传输到下行应答信息之间的定时关系,使用第二无线帧中标号相同的子帧来发 送所述下行应答信息。
在第一种情况下, 当所述下行应答信息为否认应答信息时,接收所述上行 数据的重传, 其中, 接收所述上行数据重传所在的子帧, 是发送所述下行应答 信息所在子帧之后、 满足所述时间门限要求的第一个上行子帧。
示例性的, 如图 13所示, 以上下行配比 0变化到上下行配比 2为例, 根据现 有技术中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 7、 子帧 8和子帧 9上行数据传输对应的下行应答信息分别在下一无线帧的子帧 1、 子帧 5和子帧 6反馈, 因而本发明实施例中, 网络设备也在第二无线帧的子帧 1、 子帧 5和子帧 6反馈下行应答信息, 而且, 网络设备在第二无线帧的子帧 7接收 第一无线帧的子帧 7的重传数据。
示例性的, 如图 14所示, 以上下行配比 0变化到上下行配比 1为例, 根据现 有技术中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 7、 子帧 8和子帧 9上行数据传输对应的下行应答信息分别在下一无线帧的子帧 1、 子帧 5和子帧 6反馈, 因而本发明实施例中, 网络设备也在第二无线帧的子帧 1、 子帧 5和子帧 6反馈下行应答信息, 而且, 网络设备在第二无线帧的子帧 7接收 第一无线帧的子帧 7的重传数据。
示例性的, 如图 15所示, 以上下行配比 1变化到上下行配比 2为例, 根据现 有技术中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 7和 子帧 8上行数据传输对应的下行应答信息分别在下一无线帧的子帧 1、 子帧 4反 馈, 因而本发明实施例中, 网络设备也在第二无线帧的子帧 1、 子帧 4反馈下行 应答信息, 而且, 网络设备在第二无线帧的子帧 7接收第一无线帧的子帧 7的重 传数据。
( 2 )第二种情况: 第一无线帧到第二无线帧,上下行配比发生改变,将第一无线帧的上下行 配比与第二无线帧的上下行配比进行比较,只存在第一无线帧的下行子帧对应 改变成第二无线帧的上行子帧的情况。
在第二种情况下, 由于只存在下行子帧改变成上行子帧的情况,根据现有 技术中第一无线帧的上下行配比定义的定时关系所确定的那个子帧,在第二无 线帧中可能已经变成了上行子帧, 不能发送下行应答信息。 在第二种情况下, 对所述上行数据传输,发送所述下行应答信息的子帧,是第二无线帧中与接收 所述上行数据传输所在子帧之间满足所述时间门限要求的第一个下行子帧。
在第二种情况下, 当所述下行应答信息为否认应答信息时,接收所述上行 数据的重传, 其中, 接收所述上行数据重传所在的子帧, 是发送所述下行应答 信息所在子帧之后、 满足所述时间门限要求的第一个上行子帧。
示例性的, 如图 16所示, 上下行配比 2变化到上下行配比 1 , 根据现有技术 中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 7上行数据 传输对应的下行应答信息,在下一无线帧的子帧 3反馈。但是在下一无线帧中, 根据第二无线帧的上下行配比, 子帧 3已改变为上行子帧, 不能发送下行应答 信息。 因此, 在本发明实施例中, 根据本发明实施例定义的上行数据传输到下 行应答信息反馈之间的定时关系, 如图 16所示, 对第一无线帧子帧 7中发生的 上行数据传输, 网络设备在第二无线帧的子帧 1反馈对应的下行应答信息, 而 且,根据本发明实施例定义的下行应答信息反馈到上行数据重传之间的定时关 系, 网络设备在第二无线帧的子帧 7接收第一无线帧的子帧 7的重传数据。
示例性的, 如图 17所示, 上下行配比 2变化到上下行配比 0, 根据现有技术 中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 7上行数据 传输对应的下行应答信息,在下一无线帧的子帧 3反馈。但是在下一无线帧中, 根据第二无线帧的上下行配比, 子帧 3已改变为上行子帧, 不能发送下行应答 信息。 因此, 在本发明实施例中, 根据本发明实施例定义的上行数据传输到下 行应答信息反馈之间的定时关系 ,对第一无线帧子帧 7中发生的上行数据传输, 网络设备在第二无线帧的子帧 1反馈对应的下行应答信息, 而且, 根据本发明 实施例定义的下行应答信息反馈到上行数据重传之间的定时关系,网络设备在 第二无线帧的子帧 7接收第一无线帧的子帧 7的重传数据。
示例性的, 如图 18所示, 上下行配比 1变化到上下行配比 0, 根据本发明实 施例定义的上行数据传输到下行应答信息反馈之间的定时关系,与第一无线帧 的子帧 7上行数据传输对应的下行应答信息, 网络设备在第二无线帧的子帧 1 反馈对应的下行应答信息, 而且,根据本发明实施例定义的下行应答信息反馈 到上行数据重传之间的定时关系, 网络设备在第二无线帧的子帧 7接收第一无 线帧的子帧 7的重传数据;
网络设备在第二无线帧的子帧 5反馈对应的下行应答信息, 而且, 网络设备在 第二无线帧的子帧 9接收第一无线帧的子帧 8的重传数据。
示例性的, 如图 19所示, 上下行配比 2变化到上下行配比 6, 根据本发明实 施例定义的上行数据传输到下行应答信息反馈之间的定时关系,与第一无线帧 的子帧 7上行数据传输对应的下行应答信息, 网络设备在第二无线帧的子帧 1 反馈对应的下行应答信息, 而且,根据本发明实施例定义的下行应答信息反馈 到上行数据重传之间的定时关系, 网络设备在第二无线帧的子帧 8接收第一无 线帧的子帧 7的重传数据。
( 3 )第三种情况: 第一无线帧到第二无线帧,上下行配比发生改变,将第一无线帧的上下行 配比与第二无线帧的上下行配比进行比较,既存在第一无线帧的上行子帧对应 改变成第二无线帧的下行子帧,也存在第一无线帧的下行子帧对应改变成第二 无线帧的上行子帧的情况。
在第三种情况下, 对所述上行数据传输, 发送所述下行应答信息的子帧, 是第二无线帧中与接收所述上行数据传输所在子帧之间满足所述时间门限要 求的第一个下行子帧。 在第三种情况下, 当所述下行应答信息为否认应答信息时,接收所述上行 数据的重传, 其中, 接收所述上行数据重传所在的子帧, 是发送所述下行应答 信息所在子帧之后、 满足所述时间门限要求的第一个上行子帧。 示例性的, 如图 20所示, 上下行配比 4变化到上下行配比 2, 根据现有技术 中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 2上行数据 传输对应的下行应答信息, 网络设备在第一无线帧的子帧 8反馈对应的下行应 答信息, 而且,根据本发明实施例定义的下行应答信息反馈到上行数据重新传 输之间的定时关系, 网络设备在第二无线帧的子帧 2接收第一无线帧的子帧 2 的重传数据;
仍如图 20所示, 根据现有技术中第一无线帧的上下行配比定义的定时关 一无线帧的子帧 9反馈对应的下行应答信息, 而且, 根据本发明实施例定义的 下行应答信息反馈到上行数据重新传输之间的定时关系,网络设备在第二无线 帧的子帧 7接收第一无线帧的子帧 3的重传数据。
示例性的, 如图 21所示, 上下行配比 3变化到上下行配比 1 , 根据现有技术 中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 2上行数据 传输对应的下行应答信息, 网络设备在第一无线帧的子帧 8反馈对应的下行应 答信息, 而且,根据本发明实施例定义的下行应答信息反馈到上行数据重新传 输之间的定时关系, 网络设备在第二无线帧的子帧 2接收第一无线帧的子帧 2 的重传数据;
仍如图 21所示, 根据现有技术中第一无线帧的上下行配比定义的定时关 一无线帧的子帧 9反馈对应的下行应答信息, 而且, 根据本发明实施例定义的 下行应答信息反馈到上行数据重新传输之间的定时关系,网络设备在第二无线 帧的子帧 3接收第一无线帧的子帧 3的重传数据;
仍如图 21所示,根据本发明实施例定义的上行数据传输到下行应答信息反 网络设备在第二无线帧的子帧 0反馈对应的下行应答信息, 而且, 根据本发明 实施例定义的下行应答信息反馈到上行数据重新传输之间的定时关系,网络设 备在第二无线帧的子帧 7接收第一无线帧的子帧 4的重传数据。
示例性的, 如图 22所示, 上下行配比 2变化到上下行配比 4, 根据现有技术 中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 2上行数据 传输对应的下行应答信息, 网络设备在第一无线帧的子帧 6反馈对应的下行应 答信息, 而且,根据本发明实施例定义的上下行应答信息反馈到上行数据重新 传输之间的定时关系,网络设备在第二无线帧的子帧 2接收第一无线帧的子帧 2 的重传数据;
仍如图 22所示,根据本发明实施例定义的上行数据传输到下行应答信息反 网络设备在第二无线帧的子帧 1反馈对应的下行应答信息。
示例性的, 如图 23所示, 上下行配比 1变化到上下行配比 3 , 根据现有技术 中第一无线帧的上下行配比定义的定时关系, 与第一无线帧的子帧 2上行数据 传输对应的下行应答信息, 网络设备在第一无线帧的子帧 6反馈对应的下行应 答信息, 而且,根据本发明实施例定义的上下行应答信息反馈到上行数据重新 传输之间的定时关系,网络设备在第二无线帧的子帧 2接收第一无线帧的子帧 6 的重传数据;
仍如图 23所示, 根据现有技术中第一无线帧的上下行配比定义的定时关 一无线帧的子帧 9反馈对应的下行应答信息, 而且, 根据本发明实施例定义的 上行数据传输到下行应答信息反馈之间的定时关系,网络设备在第二无线帧的 子帧 3接收第一无线帧的子帧 3的重传数据;
仍如图 23所示,根据本发明实施例定义的上行数据传输到下行应答信息反 网络设备在第二无线帧的子帧 1反馈对应的下行应答信 ,包、;
仍如图 23所示,根据本发明实施例定义的上行数据传输到下行应答信息反 网络设备在第二无线帧的子帧 5反馈对应的下行应答信息。
另外, 本领域技术人员可以知道, 在 LTE的 TDD系统中, 现有技术在接收 上行数据传输及接收重传上行数据时,是根据传输数据使用的 HARQ进程号对 接收到的信号进行合并。
但是, 本发明实施例的数据传输方法中, 无线帧发生上下行配比改变, 上 行数据传输及其重传可能使用不同的 HARQ进程号。 如图 24所示, 与第一无线 帧的子帧 7上行数据传输对应的下行应答信息 ,网络设备在第二无线帧的子帧 3 反馈对应的下行应答信息, 网络设备在第二无线帧的子帧 7接收第一无线帧的 子帧 7的重传数据, 其中, 第一无线帧的子帧 7初传上行数据的 HARQ进程号为 2, 重传上行数据的 HARQ进程号为 1 , 无法按照 HARQ进程号来对接收到的信 号进行正确的合并。 因此, 本发明实施例提供的数据传输方法, 网络设备可以 根据上行数据初传与上行数据重传的定时关系 ,将接收的初传上行数据及重传 上行数据合并, 以改善上行数据的接收性能, 不再按照 HARQ进程号来对接收 到的信号进行合并。
实施例三
本发明实施例提供一种数据传输方法,适用于用户设备。在数据传输之前, 网络设备向用户设备先发送调度授权命令,用户设备根据调度授权命令调度上 行数据。
本发明实施例的数据传输方法中,上下行配比发生改变,用户设备需要提 前获知上下行配比改变时刻, 以及改变前后的上下行配比, 可选的, 网络设备 可以通过专有 RRC信令在上下行配比发生改变之前, 将上下行配比改变时刻 , 以及改变前后的上下行配比通知用户设备, 当然, 也可以通过其它方法, 如通 过广播消息或物理层信令来通知用户设备。从而, 用户设备能明确在什么时间 向网络设备反馈上行应答信息, 从而实现业务的平滑过渡。
本发明实施例的种数据传输方法中,针对上下行配比发生改变,定义了发 送上行数据的子帧与调度授权命令所在子帧之间的定时关系:调度授权命令所 在子帧为与发送上行数据的上行子帧的时间间隔满足时间门限要求的最近的 下行子帧或者特殊子帧, 可见, 在所述时间门限内, 用户设备至少要能够完成 调度授权命令的接收与解析。通常, 用户设备完成调度授权命令的接收与解析 所需要的时间, 与器件的处理能力有关。 对于 LTE的 TDD系统, 在考虑器件处 理能力后, 所述时间门限为 4ms、 即 4个子帧。
如图 25所示,上下行配比 1改变为上下行配比 2, 以从对第二无线帧中子帧 2中发送的上行数据为例,根据现有技术中为上下行配比 2定义的调度授权命令 到上行数据传输之间的定时关系 ,其调度授权命令要在前一个无线帧的子帧 8、 即第一无线帧的子帧 8接收,但是根据第一无线帧的上下行配比 1 , 第一无线帧 子帧 8是上行子帧, 无法接收调度授权命令。 根据本发明实施例定义的发送上 行数据的子帧与调度授权命令所在子帧之间的定时关系,对第二无线帧中子帧 2发送的上行数据, 用户设备在第一无线帧的子帧 6接收调度授权命令。
如图 26所示,上下行配比 2改变为上下行配比 1 , 以从对第二无线帧中子帧 度授权命令所在子帧之间的定时关系, 用户设备在第一无线帧的子帧 8接收调 度授权命令。 以从对第二无线帧中子帧 3中发送的上行数据为例, 根据本发明 实施例定义的发送上行数据的子帧与调度授权命令所在子帧之间的定时关系, 用户设备在第一无线帧的子帧 9接收调度授权命令。
如图 27所示,上下行配比 2改变为上下行配比 0, 以从对第二无线帧中子帧 度授权命令所在子帧之间的定时关系, 用户设备在第一无线帧的子帧 8接收调 度授权命令。 以从对第二无线帧中子帧 3中发送的上行数据为例, 根据本发明 实施例定义的发送上行数据的子帧与调度授权命令所在子帧之间的定时关系, 用户设备在第一无线帧的子帧 9接收调度授权命令。
如图 28所示,上下行配比 0改变为上下行配比 2, 以从对第二无线帧中子帧 度授权命令所在子帧之间的定时关系, 用户设备在第一无线帧的子帧 6接收调 度授权命令。
如图 29所示,上下行配比 1改变为上下行配比 0, 以从对第二无线帧中子帧 度授权命令所在子帧之间的定时关系, 用户设备在第一无线帧的子帧 6接收调 度授权命令。 以从对第二无线帧中子帧 3中发送的上行数据为例, 根据本发明 实施例定义的发送上行数据的子帧与调度授权命令所在子帧之间的定时关系, 用户设备在第一无线帧的子帧 6接收调度授权命令。
如图 30所示,对于从上下行配比 0变为上下行配比 1 ,根据本发明实施例定 义的发送上行数据的子帧与调度授权命令所在子帧之间的定时关系,第二无线 帧中子帧 2中发送的上行数据,用户设备在第一无线帧的子帧 6接收调度授权命 令, 第二无线帧中子帧 3中发送的上行数据, 用户设备在第一无线帧的子帧 6 接收调度授权命令。
另外,由于与第二无线帧的子帧 2和子帧 3的上行数据传输对应的调度授权 命令均在第一无线帧的子帧 6接收, 那么可以调整为: 第二无线帧中子帧 3中 发送的上行数据, 用户设备在第一无线帧的子帧 6接收调度授权命令, 而第二 无线帧中子帧 2中发送的上行数据, 用户设备在第一无线帧的子帧 5 , 如图 30 中虚线所示。可见, 当第二无线帧出现多个上行子帧的调度授权命令在第一无 线帧的相同子帧发送时, 可以按照上行子帧从后往前的顺序,在第一无线帧中 依次寻找满足时间门限要求的最近的、 次最近的下行子帧或者特殊子帧, 来发 送调度授权命令。
仍如图中 30虚线所示, 第一无线帧的上下行配比为 0时, 根据现有技术中 第一无线帧定义的发送上行数据的子帧与调度授权命令所在子帧之间的定时 关系, 第一无线帧中子帧 9中发送的上行数据, 用户设备在第一无线帧的子帧 5 接收调度授权命令,不受本发明实施例定义的发送上行数据的子帧与调度授权 命令所在子帧之间的定时关系的限制。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局 限于此,任何熟悉本技术领域的技术人员在本发明披露的技术范围内, 可轻易 想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应该以权利要求书的保护范围为准。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程 , 是可以通过计算机程序来指令相关的硬件来完成,所述的程序可存储于一计算 机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。 其中,所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory, ROM )或随机存储记忆体( Random Access Memory, RAM )等。

Claims

权 利 要 求
1、 一种数据传输方法, 其特征在于, 包括:
通过第一无线帧中的下行子帧或者特殊子帧接收基站发送的下行数据; 当根据所述第一无线帧的第一定时时间,确定无法使用所述第一无线帧中 的上行子帧反馈所述下行数据的应答信息时, 则在第二无线帧内,使用与所述 的第一个上行子帧发送所述应答信息给所述基站;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
2、根据权利要求 1所述的数据传输方法, 其特征在于, 所述时间间隔满足 时间门限要求, 包括: 所述时间间隔大于或者等于所述时间门限。
3、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 所述时间门限 为 4ms 。
4、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 当根据所述第 一无线帧的第一定时时间,确定可以使用所述第一无线帧中的上行子帧反馈所 述下行数据的应答信息时,则在所述第一无线帧的所述上行子帧中发送所述应 答信息给所述基站。
5、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 所述第一无线 帧包括一个无线帧或两个相邻无线帧。
6、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 所述第二无线 帧包括一个无线帧或两个相邻无线帧。
7、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 所述方法还包 括:
当使用相同的上行子帧反馈多个下行子帧和 /或特殊子帧的下行数据的应 答信息时, 确定所述多个下行子帧和 /或特殊子帧构成的子帧集合; 获取为所述子帧集合所包含的子帧分配的映射标号。
8、根据权利要求 7所述的数据传输方法, 其特征在于, 所述方法还包括: 从所述第一无线帧中的下行子帧或者特殊子帧接收所述基站发送的调度 授权命令, 所述调度授权命令用于调度下行数据传输;
根据所述调度授权命令占用的控制信道单元 CCE索引和所述下行子帧或 者特殊子帧的映射标号 ,获取为所述下行数据传输分配的上行应答信道资源索 引;
使用所述上行应答信道资源索引对应的信道资源, 发送所述应答信息给 所述基站。
9、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 所述方法还包 括:
接收所述基站发送无线资源控制 RRC信令,所述 RRC信令携带发生上下行 配比改变的时间信息, 以及所述第二无线帧的上下行配比信息。
10、 一种数据传输装置, 其特征在于, 包括:
接收单元,用于通过第一无线帧中的下行子帧或者特殊子帧接收基站发送 的下行数据;
处理单元,用于确定根据所述第一无线帧的第一定时时间,是否能使用所 发送单元,用于当根据所述第一无线帧的第一定时时间,确定无法使用所
时间门限要求的第一个上行子帧发送所述应答信息给所述基站;
其中,所述第一定时时间为根据所述第一无线帧的上下行配比、传输下行 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
11、根据权利要求 10所述的数据传输装置, 其特征在于, 所述时间间隔满 足时间门限要求, 包括: 所述时间间隔大于或者等于所述时间门限。
12、根据权利要求 10或 11所述的数据传输装置, 其特征在于, 所述时间门 限为 4ms 。
13、根据权利要求 10或 11所述的数据传输装置, 其特征在于, 所述发送单 元,还用于当根据所述第一无线帧的第一定时时间,确定可以使用所述第一无 线帧中的上行子帧反馈所述下行数据的应答信息时,则在所述第一无线帧的所 述上行子帧中发送所述应答信息给所述基站。
14、根据权利要求 10或 11所述的数据传输装置, 其特征在于, 所述第一无 线帧包括一个或两个相邻无线帧, 所述第二无线帧包括一个或两个相邻无线 帧。
15、根据权利要求 10或 11所述的数据传输装置, 其特征在于, 所述装置还 包括:
确定单元, 用于当使用相同的上行子帧反馈多个下行子帧和 /或特殊子帧 的下行数据的应答信息时, 确定所述多个下行子帧和 /或特殊子帧构成的子帧 获取单元, 用于获取为所述子帧集合所包含的子帧分配的映射标号。
16、 根据权利要求 15所述的数据传输装置, 其特征在于, 所述接收单元, 还用于从所述第一无线帧中的下行子帧或者特殊子帧接收所述基站发送的调 度授权命令, 所述调度授权命令用于调度下行数据传输;
所述发送单元, 还用于根据所述调度授权命令占用的控制信道单元 CCE 索引和所述下行子帧或者特殊子帧的映射标号 ,获取为所述下行数据传输分配 的上行应答信道资源索引, 使用所述上行应答信道资源索引对应的信道资源, 发送所述应答信息给所述基站。
17、 根据权利要求 15所述的数据传输装置, 其特征在于, 所述接收单元, 还用于接收所述基站发送无线资源控制 RRC信令,所述 RRC信令携带发生上下 行配比改变的时间信息, 以及所述第二无线帧的上下行配比信息。
18、 一种数据传输方法, 其特征在于, 包括: 通过第一无线帧中的上行子帧接收用户设备发送的上行数据;
当根据所述第一无线帧的第二定时时间,确定无法使用所述第一无线帧中 内,使用与所述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的下 行子帧或者特殊子帧发送所述应答信息给所述用户设备;
其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与反馈所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
19、根据权利要求 18所述的数据传输方法, 其特征在于, 所述时间间隔满 足时间门限要求, 包括:
所述时间间隔大于或者等于所述时间门限。
20、根据权利要求 18或 19所述的数据传输方法, 其特征在于, 所述时间门 限为 4ms 。
21、根据权利要求 18或 19所述的数据传输方法, 其特征在于, 当根据所述 第一无线帧的第二定时时间,确定可以使用所述第一无线帧中的下行子帧或者 特殊子帧反馈所述上行数据的应答信息时,则在所述第一无线帧的所述下行子 帧或者所述特殊子帧发送所述上行数据的应答信息给所述用户设备。
22、根据权利要求 18或 19所述的数据传输方法, 其特征在于, 在所述第二 无线帧内,使用与所述第一无线帧的所述上行子帧的时间间隔满足时间门限要 求的下行子帧或者特殊子帧发送所述应答信息给所述用户设备, 包括: 在从所述第一无线帧的上下行配比变化为所述第二无线帧的上下行配比 的过程中,当仅存在所述第一无线帧的上行子帧对应变化为所述第二无线帧的 下行子帧时,所述与所述第一无线帧的所述上行子帧的时间间隔满足时间门限 要求的下行子帧或者特殊子帧为:根据所述第一无线帧的第二定时时间确定的 下行子帧或者特殊子帧;
或者,在从所述第一无线帧的上下行配比变化为所述第二无线帧的上下行 配比的过程中,当存在所述第一无线帧的至少一个下行子帧对应变化为所述第 二无线帧的上行子帧时,所述与所述第一无线帧的所述上行子帧的时间间隔满 足时间门限要求的下行子帧或者特殊子帧为:与所述第一无线帧的所述上行子 帧的时间间隔满足时间门限要求的第一个下行子帧或者特殊子帧。
23、根据权利要求 18所述的数据传输方法,其特征在于,所述方法还包括: 当所述上行数据的应答信息为非确定 NACK时,从与所述反馈所述上行数 据的应答信息的所述下行子帧或者所述特殊子帧的时间间隔满足时间门限要 求的第一个上行子帧中接收所述用户设备重新发送的所述上行数据。
24、根据权利要求 23所述的数据传输方法,其特征在于,所述方法还包括: 根据所述发送上行数据与重新发送所述上行数据的时间关系 ,合并接到的 所述用户设备发送的上行数据与所述用户设备重新发送的所述上行数据。
25、 一种数据传输装置, 其特征在于, 包括:
接收单元,用于通过第一无线帧中的上行子帧接收用户设备发送的上行数 据;
处理单元,用于确定根据所述第一无线帧的第二定时时间,是否能使用所
发送单元,用于当根据所述第一无线帧的第二定时时间,确定无法使用所 在第二无线帧内,使用与所述第一无线帧的所述上行子帧的时间间隔满足时间 门限要求的下行子帧或者特殊子帧发送所述应答信息给所述用户设备;
其中,所述第二定时时间为根据所述第一无线帧的上下行配比、传输上行 数据的上行子帧与反馈所述上行数据的应答信息的下行子帧或者特殊子帧之 间的时间间隔, 所述第二无线帧为所述第一无线帧的相邻帧、且所述第二无线 帧的上下行配比不同于所述第一无线帧的上下行配比。
26、根据权利要求 25所述的数据传输装置, 其特征在于, 所述时间间隔满 足时间门限要求, 包括:
所述时间间隔大于或者等于所述时间门限。
27、根据权利要求 25或 26所述的数据传输装置, 其特征在于, 所述时间门 限为 4ms 。
28、根据权利要求 25或 26所述的数据传输装置, 其特征在于, 所述发送单 元,还用于当根据所述第一无线帧的第二定时时间,确定可以使用所述第一无
所述用户设备。
29、根据权利要求 25或 26所述的数据传输装置, 其特征在于, 所述发送单 元,还具体用于在从所述第一无线帧的上下行配比变化为所述第二无线帧的上 下行配比的过程中,当仅存在所述第一无线帧的上行子帧对应变化为所述第二 无线帧的下行子帧时,所述与所述第一无线帧的所述上行子帧的时间间隔满足 时间门限要求的下行子帧或者特殊子帧为:根据所述第一无线帧的第二定时时 间确定的下行子帧或者特殊子帧;
或者,所述发送单元,还具体用于在从所述第一无线帧的上下行配比变化 为所述第二无线帧的上下行配比的过程中,当存在所述第一无线帧的至少一个 下行子帧对应变化为所述第二无线帧的上行子帧时,所述与所述第一无线帧的 所述上行子帧的时间间隔满足时间门限要求的下行子帧或者特殊子帧为:与所 述第一无线帧的所述上行子帧的时间间隔满足时间门限要求的第一个下行子 帧或者特殊子帧。
30、 根据权利要求 25所述的数据传输装置, 其特征在于, 所述接收单元, 还用于当所述上行数据的应答信息为非确定 NACK时,从与所述反馈所述上行 数据的应答信息的所述下行子帧或者所述特殊子帧的时间间隔满足时间门限 要求的第一个上行子帧中接收所述用户设备重新发送的所述上行数据。
31、根据权利要求 30所述的数据传输装置,其特征在于,所述装置还包括: 合并单元,用于根据所述发送上行数据与重新发送所述上行数据的时间关 系,合并接到的所述用户设备发送的上行数据与所述用户设备重新发送的所述 上行数据。
32、 一种数据传输方法, 其特征在于, 包括:
根据第二无线帧的第三定时时间,确定无法通过所述第二无线帧的下行子 帧或特殊子帧接收的调度授权命令来调度所述第二无线帧的上行子帧中的上 行数据, 则在第一无线帧内,从与第二无线帧的上行子帧的时间间隔满足时间 门限要求的最近的下行子帧或者特殊子帧中接收基站发送的调度授权命令; 当成功接收到调度授权命令时,在所述第二无线帧的所述上行子帧发送所 述调度授权命令调度的上行数据给基站;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、接收调度授权命令的下行子帧或者特殊子帧与发
33、根据权利要求 10所述的数据传输方法, 其特征在于, 所述时间间隔满 足时间门限要求, 包括:
所述时间间隔大于或者等于所述时间门限。
34、根据权利要求 10或 11所述的数据传输方法, 其特征在于, 所述时间门 限为 4ms 。
35、 一种数据传输装置, 其特征在于, 包括:
处理单元,用于确定根据第二无线帧的第三定时时间,是否能通过所述第 二无线帧的下行子帧或特殊子帧接收的调度授权命令来调度所述第二无线帧 的上行子帧中的上行数据;
接收单元,用于根据第二无线帧的第三定时时间,确定无法通过所述第二 无线帧的下行子帧或特殊子帧接收的调度授权命令来调度所述第二无线帧的 上行子帧中的上行数据, 则在第一无线帧内,从与第二无线帧的上行子帧的时 间间隔满足时间门限要求的最近的下行子帧或者特殊子帧中接收基站发送的 调度授权命令;
发送单元,用于当成功接收到调度授权命令时,在所述第二无线帧的所述 上行子帧发送所述调度授权命令调度的上行数据给基站;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、接收调度授权命令的下行子帧或者特殊子帧与发
36、根据权利要求 35所述的数据传输装置, 其特征在于, 所述时间间隔满 足时间门限要求, 包括:
所述时间间隔大于或者等于所述时间门限。
37、根据权利要求 35或 36所述的数据传输装置, 其特征在于, 所述时间门 限为 4ms。
38、 一种数据传输方法, 其特征在于, 包括:
根据第二无线帧的第三定时时间,确定无法通过所述第二无线帧的下行子 帧或特殊子帧发送的调度授权命令来调度所述第二无线帧的上行子帧中的上 行数据, 则在第一无线帧内,使用与所述第二无线帧的上行子帧的时间间隔满 足时间门限要求的最近的下行子帧或者特殊子帧发送所述调度授权命令给所 述用户设备;
在所述第二无线帧的所述上行子帧接收所述用户设备发送的所述上行数 据;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、发送调度授权命令的下行子帧或者特殊子帧与接 收所述上行数据的上行子帧之间的时间间隔。
39、根据权利要求 38所述的数据传输方法, 其特征在于, 所述时间间隔满 足时间门限要求, 包括: 所述时间间隔大于或者等于所述时间门限。
40、根据权利要求 38或 39所述的数据传输方法, 其特征在于, 所述时间门 限为 4ms。
41、 一种数据传输装置, 其特征在于, 包括:
处理单元,用于确定根据第二无线帧的第三定时时间,是否能通过所述第 二无线帧的下行子帧或特殊子帧发送的调度授权命令来调度所述第二无线帧 的上行子帧中的上行数据;
发送单元,用于根据第二无线帧的第三定时时间,确定无法通过所述第二 无线帧的下行子帧或特殊子帧发送的调度授权命令来调度所述第二无线帧的 上行子帧中的上行数据, 则在第一无线帧内,使用与所述第二无线帧的上行子 帧的时间间隔满足时间门限要求的最近的下行子帧或者特殊子帧发送所述调 度授权命令给所述用户设备;
接收单元,用于在所述第二无线帧的所述上行子帧接收所述用户设备发送 的所述上行数据;
其中,所述第二无线帧为所述第一无线帧的相邻帧,且所述第二无线帧的 上下行配比不同于所述第一无线帧的上下行配比,所述第三定时时间为根据所 述第二无线帧的上下行配比、发送调度授权命令的下行子帧或者特殊子帧与接 收所述上行数据的上行子帧之间的时间间隔。
42、根据权利要求 41所述的数据传输装置, 其特征在于, 所述时间间隔满 足时间门限要求, 包括:
所述时间间隔大于或者等于所述时间门限。
43、根据权利要求 41或 42所述的数据传输装置, 其特征在于, 所述时间门 限为 4ms。
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