WO2012142853A2 - Procédé et dispositif de transmission de données, et structure de trame de système de duplexage par répartition temporelle - Google Patents

Procédé et dispositif de transmission de données, et structure de trame de système de duplexage par répartition temporelle Download PDF

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Publication number
WO2012142853A2
WO2012142853A2 PCT/CN2011/085175 CN2011085175W WO2012142853A2 WO 2012142853 A2 WO2012142853 A2 WO 2012142853A2 CN 2011085175 W CN2011085175 W CN 2011085175W WO 2012142853 A2 WO2012142853 A2 WO 2012142853A2
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Prior art keywords
subframe
dynamic
transmitting
pusch
downlink
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PCT/CN2011/085175
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English (en)
Chinese (zh)
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WO2012142853A3 (fr
Inventor
郝鹏
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ZTE Corp
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ZTE Corp
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Publication of WO2012142853A3 publication Critical patent/WO2012142853A3/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • the present invention relates to the field of communications, and in particular to a data transmission method and a frame structure of a Time Division Duplex (TDD) system.
  • TDD Time Division Duplex
  • LTE Long Term Evolution
  • FIG. 1 A frame structure of a Time Division Duplex (TDD) mode of a Long Term Evolution (LTE) system (also referred to as a frame structure type 2) is shown in FIG.
  • each subframe is shown in Table 1, where D represents the downlink subframe used to transmit the downlink signal.
  • U represents an uplink subframe for transmitting an uplink signal.
  • An uplink or downlink subframe is further divided into two 0.5 ms time slots.
  • S represents a special subframe, and includes three special time slots, that is, a Downlink Pilot Time Slot (DwPTS), which is used for transmitting a downlink signal, a guard interval (GP), and an uplink guide.
  • DwPTS Downlink Pilot Time Slot
  • UpPTS Uplink Pilot Time Slot
  • the upper and lower configuration indexes are notified to the mobile phone through broadcast messages. Table 1
  • FIG. 2 is a schematic diagram of a relationship between a resource block and a resource unit according to the related art.
  • resource allocation in an LTE system is in the form of a Resource Block (RB), and one RB occupies 12 in a frequency domain.
  • Resource element (Resource Element, RE for short) (--RE occupies a single carrier-frequency division multiple access (SC-FDMA) symbol in the time domain), occupying in the time domain
  • SC-FDMA single carrier-frequency division multiple access
  • One time slot, that is, one RB is in the normal cyclic prefix (Normal Cyclic Prefix, In the case of CP), 7 SC-FDMA symbols are occupied, and under the extended CP condition, 6 SC-FDMA symbols are occupied.
  • the uplink and downlink data services are transmitted by the LTE system using a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH).
  • PUSCH physical uplink shared channel
  • PDSCH physical downlink shared channel
  • the base station needs to use the uplink grant signaling to notify the corresponding terminal of the time-frequency resource used by the PUSCH channel, the modulation and coding mode of the transport block, and the like.
  • the base station will feed back the correct or error response information (ACK/NACK) of the corresponding transport block, indicating whether the corresponding transport block of the terminal is correctly received.
  • ACK/NACK correct or error response information
  • the base station needs to notify the corresponding terminal by using the downlink authorization signaling.
  • the terminal After transmitting the PDSCH, the terminal feeds back the correct or error response information of the corresponding transport block, indicating whether the corresponding transport block of the base station is correctly received.
  • a data transmission method including: dividing a radio frame of a time division duplex (TDD) system into a fixed downlink subframe, a special subframe, a fixed uplink subframe, and a dynamic subframe according to a predetermined rule Data transmission is performed on the radio frame after the division operation, wherein the dynamic subframe is used to transmit uplink data, downlink data, or cancel data transmission.
  • TDD time division duplex
  • performing data transmission on the radio frame after the dividing operation comprises: notifying the terminal dynamic subframe on the fixed downlink subframe or the dynamic subframe in front of the dynamic subframe for performing data transmission or the dynamic subframe for performing data transmission.
  • the information of transmitting uplink data, transmitting downlink data, or canceling transmission data, the terminal is one, multiple or all terminals in the cell; and using the notification to perform data transmission on the dynamic subframe.
  • the terminal is notified in one of the following ways: sending predetermined signaling to the terminal; determining to transmit uplink data, transmit downlink data, or cancel transmission data on the dynamic subframe according to the transmission condition of the subframe before the dynamic subframe.
  • performing data transmission on the radio frame after the dividing operation comprises: when the physical uplink shared channel (PUSCH) is transmitted on the dynamic subframe on the radio frame after the dividing operation, transmitting the corresponding authorization of the PUSCH in one of the following locations: Signaling: a fixed downlink subframe in front of a dynamic subframe in which a PUSCH is transmitted, a downlink pilot slot DwPTS in front of a dynamic subframe in which a PUSCH is transmitted, and other dynamic subframes in which a downlink signal is transmitted in front of a dynamic subframe in which a PUSCH is transmitted;
  • the acknowledgment/non-acknowledgement (ACK/NACK) information corresponding to the PUSCH is transmitted at one of the following positions: a fixed downlink subframe following the dynamic subframe in which the PUSCH is transmitted, and a downlink pilot slot (DwPTS) following the dynamic subframe in which the PUSCH is transmitted,
  • the number of subframes between the subframe where the authorization signaling is located and the first predetermined dynamic subframe where the PUSCH is located is a natural number greater than or equal to 3; the subframe where the ACK/NACK information is located and the first predetermined dynamic subframe where the PUSCH is located
  • the number of subframes spaced between frames is a natural number greater than or equal to 3.
  • performing data transmission on the radio frame after the dividing operation comprises: when transmitting the physical downlink shared channel (PDSCH) on the dynamic subframe on the radio frame after the dividing operation, transmitting the PDSCH corresponding authorization in one of the following locations: Signaling: transmitting a dynamic subframe of the PDSCH, transmitting a fixed downlink subframe in front of the PDSCH, transmitting a DwPTS in front of the PDSCH, and transmitting other dynamic subframes in the PDSCH for transmitting downlink data; and transmitting a corresponding acknowledgement of the PDSCH in one of the following locations: / ACK/NACK information: a second predetermined dynamic subframe, a fixed uplink subframe following the second predetermined dynamic subframe, and other dynamic subframes subsequent to the second predetermined dynamic subframe for transmitting uplink data.
  • PDSCH physical downlink shared channel
  • the number of subframes between the subframe where the authorization signaling is located and the predetermined dynamic subframe where the PUSCH is located is greater than or a natural number equal to 3; when the subframe where the authorization signaling is located and the second predetermined dynamic subframe where the PUSCH is located is located in a different subframe, the number of subframes between the subframe where the ACK/NACK information is located and the PUSCH is greater than or equal to 3. Natural number.
  • a data transmission apparatus including: a dividing module, configured to divide a radio frame of a time division duplex TDD system into a fixed downlink subframe, a special subframe, and a fixed uplink subframe according to a predetermined rule. And a dynamic subframe; the first transmission module is configured to perform data transmission on the radio frame after the dividing operation.
  • the first transmission module includes: a notification module, configured to notify the terminal dynamic subframe on a fixed downlink subframe before the dynamic subframe for performing data transmission or a dynamic subframe for performing data transmission or on the dynamic subframe
  • a notification module configured to notify the terminal dynamic subframe on a fixed downlink subframe before the dynamic subframe for performing data transmission or a dynamic subframe for performing data transmission or on the dynamic subframe
  • the terminal is one, multiple, or all terminals in the cell, and is used for data transmission on the dynamic subframe by using the notification.
  • the first transmission module includes: a first sending module, configured to: when the physical uplink shared channel PUSCH is transmitted on the dynamic subframe on the radio frame after the dividing operation, send the corresponding signaling signaling of the PUSCH in one of the following locations: a fixed downlink subframe in front of the dynamic subframe in which the PUSCH is transmitted, a downlink pilot slot (DwPTS) in front of the dynamic subframe in which the PUSCH is transmitted, and other dynamic subframes in the downlink before the dynamic subframe in which the PUSCH is transmitted;
  • the second sending module is configured to send the corresponding acknowledge/non-acknowledgement (ACK/NACK) information of the PUSCH in one of the following locations: a fixed downlink subframe after the dynamic subframe in which the PUSCH is transmitted, and a downlink pilot behind the dynamic subframe in which the PUSCH is transmitted A time slot (DwPTS), another dynamic subframe for transmitting downlink data after the dynamic subframe of the PUSCH is transmitted.
  • the first transmission module includes: a third transmission module, configured to send a PDSCH corresponding authorization letter in one of the following locations when the physical downlink shared channel (PDSCH) is transmitted on the dynamic subframe on the radio frame after the division operation
  • a third transmission module configured to send a PDSCH corresponding authorization letter in one of the following locations when the physical downlink shared channel (PDSCH) is transmitted on the dynamic subframe on the radio frame after the division operation
  • the fourth transmission module is set to be in the following
  • the acknowledgment/non-acknowledgement (ACK/NACK) information corresponding to the PDSCH is transmitted at one location: a dynamic subframe in which the PDSCH is transmitted, a fixed uplink subframe after the transmission of the PDSCH, and other dynamic subframe
  • a frame structure of a TDD system including: a fixed downlink subframe, a special subframe, a fixed uplink subframe, and a dynamic subframe, where the dynamic subframe is used to transmit uplink data. , downlink data or cancel data transmission.
  • the radio frame of the TDD system is divided into multiple sub-frame structures including dynamic sub-frames, wherein the dynamic sub-frame is used for transmitting downlink data, uplink data, or canceling data transmission, which solves the problem that the data transmission cannot be satisfied in the related art.
  • the change in the amount of underlying traffic leads to a problem of relatively low data transmission efficiency, thereby achieving an effect of improving data transmission efficiency.
  • FIG. 1 is a schematic diagram of a second type of frame structure of an LTE system according to the related art
  • FIG. 2 is a schematic diagram of a relationship between resource blocks and resource units according to the related art
  • FIG. 3 is a data transmission method according to an embodiment of the present invention
  • Flow chart 4 is a schematic diagram 1 of a timing relationship of a data transmission method according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram 2 of a timing relationship of a data transmission method according to an embodiment of the present invention
  • FIG. 6 is a timing of a data transmission method according to an embodiment of the present invention
  • 3 is a schematic diagram of a timing relationship of a data transmission method according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of a timing relationship of a data transmission method according to an embodiment of the present invention
  • FIG. 9 is a data according to an embodiment of the present invention.
  • a block diagram of a structure of a transmission device and
  • FIG. 10 is a block diagram showing a preferred structure of a data transmission device according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps S302 and S304. Step S302: The radio frame of the time division duplex (TDD) system is divided into a fixed downlink subframe, a special subframe, a fixed uplink subframe, and a dynamic subframe according to a predetermined rule, where the dynamic subframe is used for transmitting uplink data and downlink data.
  • TDD time division duplex
  • Step S304 Perform data transmission on the radio frame after the dividing operation.
  • the radio frame of the TDD system is divided into multiple sub-frame structures including dynamic sub-frames, where the dynamic sub-frame is used for transmitting downlink data, uplink data, or canceling data transmission, which solves the problem that the data transmission cannot be satisfied in the related art.
  • the change in the amount of underlying traffic leads to a problem of relatively low data transmission efficiency, thereby achieving an effect of improving data transmission efficiency.
  • a preferred embodiment of step S304 is described below.
  • Performing data transmission on the radio frame after the dividing operation includes: notifying the terminal dynamic subframe to transmit the uplink data on the fixed downlink subframe or the dynamic subframe in front of the dynamic subframe for performing data transmission or the dynamic subframe for performing data transmission And transmitting downlink data or canceling transmission of data, the terminal is one, multiple or all terminals in the cell; and using the notification to perform data transmission on the dynamic subframe.
  • the channel and control for transmitting data are determined after the dynamic subframe is introduced.
  • the timing relationship between channels reduces the delay of data transmission, ensures the balance of control signaling load, and improves the transmission quality of the system.
  • the terminal is notified in one of the following ways: sending predetermined signaling to the terminal; determining to transmit uplink data, transmit downlink data, or cancel transmission data on the dynamic subframe according to the transmission condition of the subframe before the dynamic subframe.
  • the diversity of the manner in which the terminal is notified is improved.
  • a preferred embodiment of step S304 is described below.
  • the PUSCH corresponding authorization signaling is sent in one of the following locations: Dynamics of transmitting PUSCH a fixed downlink subframe in front of the subframe, a downlink pilot slot DwPTS in front of the dynamic subframe in which the PUSCH is transmitted, and other dynamic subframes in the transmission subframe in front of the dynamic subframe in which the PUSCH is transmitted; Corresponding ACK/NACK information: a fixed downlink subframe following the dynamic subframe in which the PUSCH is transmitted, a DwPTS following the dynamic subframe in which the PUSCH is transmitted, and other dynamic subframes used to transmit the downlink data after the dynamic subframe in which the PUSCH is transmitted.
  • the timing relationship of the dynamic subframe, the grant signaling, and the ACK/NACK information of the PUSCH is determined, and the transmission delay of transmitting the PUSCH is reduced.
  • the number of subframes between the subframe where the authorization signaling is located and the first predetermined dynamic subframe where the PUSCH is located is a natural number greater than or equal to 3; the subframe where the ACK/NACK information is located and the first predetermined dynamic subframe where the PUSCH is located
  • the number of subframes spaced between frames is a natural number greater than or equal to 3.
  • a preferred embodiment of step S304 is described below.
  • the PDSCH corresponding grant signaling is sent in one of the following locations: a dynamic subframe for transmitting the PDSCH, and a fixed downlink subframe for transmitting the PDSCH.
  • the timing relationship of the dynamic subframe, the grant signaling, and the ACK/NACK information for transmitting the PUDCH is determined, and the transmission delay of transmitting the PDSCH is reduced.
  • the number of subframes between the subframe where the authorization signaling is located and the predetermined dynamic subframe where the PUSCH is located is greater than or a natural number equal to 3; when the subframe where the authorization signaling is located and the second predetermined dynamic subframe where the PUSCH is located is located in a different subframe, the number of subframes between the subframe where the ACK/NACK information is located and the PUSCH is greater than or equal to 3.
  • Embodiment 1 This embodiment provides a data transmission method. This embodiment combines the above embodiments and preferred embodiments thereof. The method includes the following steps 1 and 2.
  • Step 1 Divide a radio frame, and the divided radio frame includes: a fixed downlink subframe, a special subframe, a fixed uplink subframe, and a dynamic subframe.
  • the special subframe includes DwPTS, GP, UpPTS o dynamic subframe to transmit uplink signal, transmit downlink signal or not transmit any signal.
  • Step 2 The base station notifies one or more or all terminals in the cell to transmit an uplink signal or a downlink signal or not transmit any signal on a fixed downlink subframe or a dynamic subframe in front of the dynamic subframe.
  • the notification can be in an explicit manner or an implicit manner.
  • the explicit mode in step 2 is to notify by specific signaling.
  • the implicit mode is to determine whether the current dynamic subframe should transmit an uplink or downlink signal by using the transmission condition of the subframe before the dynamic subframe.
  • the corresponding authorization signaling is sent on the fixed downlink subframe or the DwPTS in front of the dynamic subframe or the dynamic subframe used to transmit the downlink signal, and the corresponding correct or error response is sent back.
  • the signaling is sent on a fixed downlink subframe or DwPTS following the dynamic subframe or a dynamic subframe used to transmit the downlink signal.
  • the number of subframes between the subframe where the authorization signaling is located and the subframe where the PUSCH is located is greater than or equal to 3, and the feedback signaling of the correct or incorrect response is The number of subframes separated by the PUSCH is greater than or equal to 3.
  • the corresponding authorization signaling is sent on the dynamic subframe or the DwPTS or on the fixed downlink subframe or DwPTS in front of the dynamic subframe or the dynamic subframe used to transmit the downlink signal.
  • the corresponding correct or error response feedback signaling is sent on a fixed uplink subframe after the dynamic subframe or a dynamic subframe for transmitting an uplink signal.
  • the interval between them is greater than or equal to 3
  • the feedback signaling of the correct or incorrect response is The number of subframes spaced between PDSCHs is greater than or equal to three.
  • FIG. 4 is a schematic diagram 1 of a timing relationship of a data transmission method according to an embodiment of the present invention. As shown in FIG.
  • a downlink grant and a PDSCH are transmitted on the same dynamic subframe, and an ACK/NACK is sent on a fixed uplink subframe.
  • the base station sends downlink grant signaling in subframe 3 of radio frame A+1, and transmits PDSCH on subframe 3, in subframe 7
  • the feedback is correct or error response signaling.
  • the third embodiment of the present invention provides a data transmission method.
  • the embodiment combines the foregoing embodiments and preferred embodiments thereof.
  • the embodiment sends an uplink grant on a fixed downlink subframe or a DwPTS, and sends the uplink subframe.
  • the corresponding PUSCH transmits ACK/NACK on the fixed downlink subframe.
  • subframes 0, 5 are fixed downlink subframes
  • subframes 1, 6 are special subframes, including DwPTS, GT , UpPTS
  • Subframes 3, 4, 8, and 9 are dynamic subframes.
  • FIG. 5 is a schematic diagram of a timing relationship of a data transmission method according to an embodiment of the present invention.
  • an uplink grant is sent on a fixed downlink subframe or a DwPTS
  • a corresponding PUSCH is sent on a dynamic subframe
  • an ACK is sent on a fixed downlink subframe.
  • NACK the base station sends uplink grant signaling in the DwPTS of subframe 1 of the radio frame A
  • the terminal transmits the PUSCH on the subframe 8 (dynamic subframe)
  • the base station is in the subframe 5 of the radio frame A+1 (fixed downlink subframe) Feedback correct or error response signaling.
  • Embodiment 4 This embodiment provides a data transmission method.
  • this embodiment combines the foregoing embodiments and preferred embodiments thereof.
  • the downlink grant and the PDSCH are transmitted on the same dynamic subframe, and the uplink sub-frame is converted by the dynamic subframe.
  • An ACK/NACK is sent on the frame.
  • subframes 0, 5 are fixed downlink subframes
  • subframes 1, 6 are special subframes, including DwPTS, GT, UpPTS
  • Subframes 3, 4, 8, and 9 are dynamic subframes.
  • 6 is a schematic diagram 3 of a timing relationship of a data transmission method according to an embodiment of the present invention. As shown in FIG.
  • a downlink grant and a PDSCH are transmitted on the same dynamic subframe, and an ACK/NACK is sent on an uplink subframe converted by a dynamic subframe.
  • the base station sends downlink grant signaling in subframe 4 of radio frame A+1, and transmits PDSCH on subframe 4, and feeds back a correct or error response message on subframe 8 (an uplink subframe converted by dynamic subframe). make.
  • Embodiment 5 This embodiment provides a data transmission method. This embodiment combines the foregoing embodiment and a preferred implementation manner thereof.
  • an uplink grant is sent on a fixed downlink subframe or a DwPTS, and a corresponding uplink is sent on a dynamic subframe.
  • subframes 0, 5 are fixed downlink subframes; subframes 2, 7 or fixed uplink subframes; subframes 1, 6 are special subframes, including DwPTS, GT, UpPTS; subframes 3, 4, 8,
  • FIG. 7 is a schematic diagram 4 of a timing relationship of a data transmission method according to an embodiment of the present invention.
  • an uplink grant is sent on a fixed downlink subframe or a DwPTS, and a corresponding PUSCH is sent on a dynamic subframe, and the downlink is converted by a dynamic subframe.
  • the subframe sends an ACK/NACK.
  • the base station sends uplink grant signaling in the DwPTS of subframe 1 of the radio frame A, the terminal transmits the PUSCH on the subframe 8 (dynamic subframe), and the base station is in the subframe 3 of the radio frame A+1 (converted by the dynamic subframe)
  • the downlink sub-frame) is fed back with correct or error response signaling.
  • Embodiment 6 This embodiment provides a data transmission method. The embodiment combines the foregoing embodiment and a preferred implementation manner thereof.
  • an uplink grant is sent by using a dynamic subframe in a downlink subframe of dynamic subframe conversion.
  • the corresponding PUSCH is transmitted, and the ACK/NACK is transmitted by the downlink subframe converted by the dynamic subframe.
  • subframes 0, 5 are fixed downlink subframes; subframes 2, 7 or fixed uplink subframes; subframes 1, 6 are special subframes, including DwPTS, GT, UpPTS; subframes 3, 4, 8,
  • FIG. 8 is a schematic diagram 5 of a timing relationship of a data transmission method according to an embodiment of the present invention.
  • an uplink grant is sent on a downlink subframe of a dynamic subframe conversion, and a corresponding PUSCH is sent on a dynamic subframe, and a dynamic subframe is transmitted.
  • the converted downlink subframe transmits an ACK/NACK.
  • the base station transmits uplink grant signaling in subframe 4 of the radio frame A (the downlink subframe converted by the dynamic subframe), and the terminal transmits the PUSCH on the subframe 8 (dynamic subframe), and the base station is in the subframe of the radio frame A+1.
  • FIG. 9 is a structural block diagram of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 9, the apparatus includes: a division module 92 and a first transmission module 94, The foregoing structure is described in detail.
  • the dividing module 92 is configured to divide the radio frame of the time division duplex TDD system into a fixed downlink subframe, a special subframe, a fixed uplink subframe, and a dynamic subframe according to a predetermined rule, where the dynamic subframe is used. The uplink data, the downlink data, or the data transmission is cancelled.
  • the first transmission module 94 is connected to the dividing module 92 for performing data transmission on the radio frame after the dividing operation of the dividing module 92.
  • FIG. 10 is a block diagram of a preferred structure of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 10, the first transmission module 94 includes: a notification module 941, a second transmission module 942, a first transmission module 944, and a second transmission.
  • the first transmission module 94 includes: a notification module 941, used for data transmission dynamic subframe or data transmission
  • the fixed downlink subframe in front of the dynamic subframe or the dynamic subframe is used to notify the terminal that the dynamic subframe is used for transmitting uplink data, transmitting downlink data, or canceling transmission of data, and the terminal is one, multiple, or all terminals in the cell
  • the second transmission module 942 is configured to perform data transmission on the dynamic subframe by using the notification.
  • the first transmission module 94 includes: a first sending module 944, configured to send a PUSCH corresponding authorization signaling in one of the following locations when the PUSCH is transmitted on the dynamic subframe on the radio frame after the dividing operation: transmitting the PUSCH a fixed downlink subframe in front of the dynamic subframe, a downlink pilot slot DwPTS in front of the dynamic subframe in which the PUSCH is transmitted, and other dynamic subframes in the downlink before the dynamic subframe in which the PUSCH is transmitted; the second sending module 945 For transmitting the physical downlink shared channel PDSCH on the dynamic subframe on the radio frame after the division operation, transmitting the corresponding acknowledge/non-acknowledgement (ACK/NACK) information of the PUSCH in one of the following positions: transmitting the dynamic subframe of the PUSCH The following fixed downlink subframe, the downlink pilot slot DwPTS following the dynamic subframe in which the PUSCH is transmitted, and other dynamic subframes after the dynamic subframe in which the PUSCH
  • the first transmission module 94 includes: a third transmission module 947, configured to send a PDSCH corresponding authorization letter in one of the following locations when the physical downlink shared channel PDSCH is transmitted on the dynamic subframe on the radio frame after the division operation Let: transmit the dynamic subframe of the PDSCH, transmit the fixed downlink subframe in front of the PDSCH, and transmit
  • the fourth transmission module 948 is configured to send the ACK/NACK information corresponding to the PDSCH in one of the following locations when the PDSCH is transmitted on the dynamic subframe on the radio frame after the division operation: transmitting the dynamic subframe of the PDSCH, and transmitting the PDSCH
  • the uplink subframe is fixed, and other dynamic subframes for transmitting uplink data behind the PDSCH are transmitted.
  • the foregoing embodiment provides a data transmission method and apparatus, which are configured to divide a radio frame of a TDD system into multiple sub-frame structures including dynamic sub-frames, where the dynamic sub-frame is used for transmitting downlink data, uplink data, or canceling data transmission.
  • the invention solves the problem that the data transmission in the related technology cannot satisfy the change of the upper and lower traffic volume, resulting in relatively low data transmission efficiency, thereby achieving the effect of improving the data transmission efficiency.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention porte sur un procédé et un dispositif de transmission de données et une structure de trame d'un système de duplexage par répartition temporelle (TDD). Le procédé consiste à : classifier des trames sans fil d'un système TDD en sous-trames de liaison descendante fixes, sous-trames spéciales, sous-trames de liaison montante fixes et sous-trames dynamiques selon une règle prédéterminée (S302), les sous-trames dynamiques étant utilisées pour transmettre des données de liaison montante ou des données de liaison descendante, ou annuler une transmission de données; et effectuer une transmission de données sur les trames sans fil après l'opération de classification (S304). La présente invention a pour effet d'améliorer l'efficacité de transmission de données.
PCT/CN2011/085175 2011-04-22 2011-12-31 Procédé et dispositif de transmission de données, et structure de trame de système de duplexage par répartition temporelle Ceased WO2012142853A2 (fr)

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