WO2009105990A1 - Procédé d'émission montante / de rétroaction basé sur un système de communication sans fil à duplexage par répartition dans le temps - Google Patents

Procédé d'émission montante / de rétroaction basé sur un système de communication sans fil à duplexage par répartition dans le temps Download PDF

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Publication number
WO2009105990A1
WO2009105990A1 PCT/CN2009/070518 CN2009070518W WO2009105990A1 WO 2009105990 A1 WO2009105990 A1 WO 2009105990A1 CN 2009070518 W CN2009070518 W CN 2009070518W WO 2009105990 A1 WO2009105990 A1 WO 2009105990A1
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WO
WIPO (PCT)
Prior art keywords
uplink
data sub
packet
transport block
downlink
Prior art date
Application number
PCT/CN2009/070518
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English (en)
Chinese (zh)
Inventor
辛雨
方永刚
Original Assignee
中兴通讯股份有限公司
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
Priority claimed from CN2008100806347A external-priority patent/CN101521908B/zh
Priority claimed from CN 200810086362 external-priority patent/CN101547073B/zh
Priority claimed from CN 200810086367 external-priority patent/CN101547074B/zh
Priority claimed from CN200810086360A external-priority patent/CN101547071B/zh
Priority claimed from CN 200810086361 external-priority patent/CN101547072B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2009105990A1 publication Critical patent/WO2009105990A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems

Definitions

  • the present invention relates to the field of communications, and in particular to an uplink transmission/feedback method based on a wireless communication time division duplex (TDD) system.
  • TDD time division duplex
  • BACKGROUND In a wireless system that performs data transmission in units of superframes, uplink/downlinks of wireless air interface transmission are generally transmitted in units of superframes; each superframe is composed of a reamble (preamble) and It consists of several PHY Frames; the preamble and PHY Frame are all based on OFDM (Orthogonal Frequency Division Multiplexing) Symbol (symbol).
  • OFDM Orthogonal Frequency Division Multiplexing
  • the current UMB User Mobile Broadband
  • LTE Long-Term Evolution
  • WiMAX Worldwide Interoperability for Microwave Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the uplink/downlinks are transmitted in different frequency bands, so that the resource allocation of the uplink/downlink PHY Frames of the system is relatively independent.
  • the uplink/downlink uses the same frequency band for time division transmission. In this mode, the PHY frames need to be divided into uplink and downlink time division for transmission.
  • the proportion of uplink and downlink physical frames includes: TDD3:5, TDD5:3, TDD4:4, TDD6:2, and so on.
  • the uplink and downlink PHY frames may be transmitted in the following manner: the base station and the terminal transmit data in units of superframes, and within a superframe duration, the base station first sends a preamble to the terminal. And transmitting downlink data to the terminal by using a downlink transport block consisting of 5 consecutive downlink physical frames. At the first time interval, the base station and the terminal do not send data, and then, the base station receives the uplink formed by the terminal through three consecutive uplink physical frames.
  • the uplink data sent by the transport block, the base station and the terminal do not send data at the second time interval, and then the base station sends downlink data to the terminal through another downlink transport block composed of 5 consecutive downlink physical frames, in the third time. At the interval, the base station and the terminal do not send data, and then the base station receives the terminal through 3 consecutive uplink physical frames.
  • the uplink data sent by another uplink transmission block, the base station and the terminal do not send data at the fourth time interval, and then the base station sends the downlink data to the terminal through another downlink transmission block composed of 5 consecutive downlink physical frames.
  • the base station and the terminal do not send data, and then the base station receives the uplink data sent by the terminal through another uplink transport block composed of 3 consecutive uplink physical frames.
  • the uplink and downlink PHY frames can be transmitted in the following manner: The base station and the terminal transmit data in units of superframes, and within a superframe duration, the base station first sends a preamble to the terminal, and then The downlink transmission block consisting of 4 consecutive downlink physical frames sends downlink data to the terminal. At the first time interval, the base station and the terminal do not send data, and then the base station receives the uplink transmission block formed by the terminal through 4 consecutive uplink physical frames.
  • the uplink data sent, the base station and the terminal do not send data at the second time interval, and then the base station sends downlink data to the terminal through another downlink transport block composed of 4 consecutive downlink physical frames, at the third time interval.
  • the base station and the terminal do not send data, and then the base station receives the uplink data sent by the terminal through another uplink transport block composed of 4 consecutive uplink physical frames.
  • the base station and the terminal do not send data, and then The base station sends the downlink to the terminal through another downlink transport block consisting of 4 consecutive downlink physical frames.
  • the base station and the terminal receives the uplink data from another terminal through an uplink transmission block of four consecutive frames of the physical uplink transmission.
  • the uplink and downlink PHY frames may be transmitted in the following manner: The base station and the terminal transmit data in units of superframes, and within a superframe duration, the base station first sends a preamble to the terminal, and then The downlink transmission block consisting of three consecutive downlink physical frames sends downlink data to the terminal. At the first time interval, the base station and the terminal do not send data, and then the base station receives the uplink transmission block formed by the terminal through five consecutive uplink physical frames.
  • the uplink data is sent, and the base station and the terminal do not send data at the second time interval, and then the base station sends downlink data to the terminal through another downlink transport block composed of three consecutive downlink physical frames, at the third time interval.
  • the base station and the terminal do not send data, and then the base station receives the uplink data sent by the terminal through another uplink transport block composed of 5 consecutive uplink physical frames.
  • the base station and the terminal do not send data, and then The base station sends the downlink to the terminal through another downlink transport block consisting of three consecutive downlink physical frames.
  • the base station and the terminal receives the uplink data terminal 5 through successive frames of the physical uplink another uplink transmission block transmitted.
  • the uplink and downlink PHY frames can be as follows: Transmission: The base station and the terminal transmit data in units of superframes. Within a superframe duration, the base station first sends a preamble to the terminal, and then sends downlink data to the terminal through a downlink transport block composed of 6 consecutive downlink physical frames.
  • the base station and the terminal do not send data, and then the base station receives the uplink data sent by the terminal through the uplink transmission block composed of two consecutive uplink physical frames, and the base station and the terminal do not send data at the second time interval. Then, the base station sends downlink data to the terminal through another downlink transport block composed of 6 consecutive downlink physical frames.
  • the base station and the terminal do not send data, and then the base station receives the terminal through 2 consecutive uplinks.
  • the uplink data sent by another uplink transport block composed of the physical frame, the base station and the terminal do not send data at the fourth time interval, and then the base station sends the downlink transmission block composed of 6 consecutive downlink physical frames to the terminal.
  • Downstream data at the fifth time interval, the base station and the terminal do not send data, of course Another uplink transmission block, the receiving terminal through the base station and then two consecutive frames of the physical uplink transmission of uplink data.
  • the terminal needs to change from one TDD mode to another TDD mode when switching between cells; in addition, when the system (terminal, J, zone) is from one When the TDD mode is changed to another TDD mode, the terminal also needs to change from one TDD mode to another TDD mode.
  • the present invention aims to provide time division duplex based on wireless communication.
  • the wireless communication time division duplex system is based on using a downlink transmission block including a continuous first number of downlink physical frames for downlink transmission, which will include continuous
  • the uplink transmission block of the second number of uplink physical frames is used for uplink transmission, and the sum of the first quantity and the second quantity is 8.
  • the uplink transmission/feedback method based on the wireless communication time division duplex system includes: the terminal transmitting the uplink extended data sub-packet to the base station by using two consecutive three or three uplink physical frames of the uplink transport block; The uplink extended data sub-packet; based on the demodulation result, the base station transmits the predetermined downlink physical frame of the downlink transport block after the uplink transport block according to the uplink physical frame used by the terminal, and is used to indicate whether the uplink extended data sub-packet is successfully demodulated.
  • the base station transmits the response message only if the demodulation is successful; for the uplink extended data sub-packet of the demodulation failure, the terminal transmits the retransmission uplink extended data in the corresponding uplink physical frame of the next uplink transport block. package.
  • the base station performs uplink extended data sub-packet demodulation, if the base station demodulates the uplink extended data sub-packet, the response message for demodulating the uplink extended data sub-packet is successful; if the base station demodulates the uplink extended data sub-packet, the demodulated uplink extended data sub-packet The response message of the packet failure.
  • the values of the first quantity and the second quantity include the following: the first quantity is 6, the second quantity is 2; or the first quantity is 5, the second quantity is 3; and/or the first quantity is 4, The second number is 4; and/or the first number is 3 and the second number is 5.
  • the predetermined downlink physical frame is determined according to the following manner: when the terminal sends the uplink extended data sub-packet by using the first two uplink physical frames of the uplink transport block, the predetermined The downlink physical frame is the second downlink physical frame or the third downlink physical frame in the downlink transport block.
  • the predetermined downlink physical frame is the downlink transport block.
  • the third downlink physical frame or the fourth downlink physical frame when the terminal uses the three uplink physical frames of the uplink transport block to send the uplink extended data sub-packet, the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block.
  • the predetermined downlink physical frame when the terminal sends the uplink extended data sub-packet by using the first three uplink physical frames of the uplink transport block, the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block; when the terminal uses the uplink transmission When the last three uplink physical frames of the block send the uplink extended data sub-packets, the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block.
  • the predetermined downlink physical frame is: the third or fourth downlink physical frame of the downlink transport block.
  • the retransmission threshold may be set in advance, and in the case that the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches the retransmission threshold, retransmission is not performed.
  • the uplink extended data packet that is successfully demodulated wherein the position of the corresponding uplink physical frame in the next uplink transport block and the uplink physical frame in which the uplink extended data sub-packet is sent are uplinked.
  • the locations in the transport block are consistent.
  • an uplink transmission/feedback method based on a wireless communication time division duplex system for simultaneously or sequentially adopting TDD4:4, TDD3:5, TDD5:3 in a wireless communication time division duplex system is provided.
  • the transmission/feedback of the uplink extended data sub-packets is implemented in the case where any two or three of the modes perform uplink transmission/feedback.
  • the uplink transmission/feedback method based on the wireless communication time division duplex system includes: the terminal transmits an uplink extended data sub-packet to the base station by using an uplink physical frame of a fixed position in the uplink transport block, and the base station receives and demodulates the extended data sub-packet. And transmitting, in the downlink physical frame of the fixed position in the downlink transport block after the uplink transport block, a response message indicating whether the uplink extended data sub-packet is successfully demodulated; or, the base station only responds if the demodulation is successful. The sending of the message.
  • the uplink physical frame of the fixed position in the uplink transport block is the last three uplink physical frames of the uplink transport block, and the downlink physical frame of the fixed position in the downlink transport block after the uplink transport block is the third downlink physical frame of the downlink transport block.
  • the method may further include: pre-setting a retransmission threshold, and in case the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches a retransmission threshold, no retransmission is performed.
  • the method may further include: for demodulating the successfully uplink data sub-packet, the terminal sends another uplink extended data sub-packet in the corresponding uplink physical frame in the next uplink transport block.
  • the position of the corresponding uplink physical frame in the next uplink transport block is consistent with the position of the uplink physical frame transmitting the uplink extended data sub-packet in the uplink transport block.
  • the terminal transmits the extended data sub-packets on two consecutive consecutive three or three uplink physical frames, and causes the base station to use the uplink physical frame used by the terminal in the predetermined downlink of the downlink transport block.
  • the acknowledgment message is sent on the physical frame, which realizes the transmission and feedback of the uplink extended data sub-packet, which makes up for the defect of the transmission and feedback mechanism lacking the extended data sub-packet in various uplink and downlink physical frame configuration modes in the related art.
  • FIG. 1 is a flow chart of an uplink transmission/feedback method based on a wireless communication time division duplex system according to an embodiment of the method of the present invention
  • FIGS. 2a and 2b are time division duplex based on wireless communication according to an embodiment of the method of the present invention.
  • Schematic diagram of the transmission in the processing example 1 of the uplink transmission/feedback method of the system; 3a and 3b are transmission diagrams in a processing example 2 of an uplink transmission/feedback method based on a wireless communication time division duplex system according to an embodiment of the method of the present invention;
  • FIGS. 4a and 4b are timings based on wireless communication according to an embodiment of the method of the present invention.
  • 5a and 5b are transmissions in the processing example 4 of the uplink transmission/feedback method based on the wireless communication time division duplex system according to an embodiment of the method of the present invention
  • 6a and 6b are transmission diagrams in a processing example 5 of an uplink transmission/feedback method based on a wireless communication time division duplex system according to an embodiment of the method of the present invention
  • FIGS. 7a and 7b are wireless based methods according to an embodiment of the method of the present invention.
  • FIG. 8a and 8b are processing examples 7 of the uplink transmission/feedback method based on the wireless communication time division duplex system according to an embodiment of the method of the present invention; Schematic diagram of transmission; Figures 9a and 9b are uplink transmissions based on wireless communication time division duplex system according to an embodiment of the method of the present invention Transmission diagram of the transmission/feedback method in the eighth embodiment; FIG. 10a and FIG.
  • 10b are schematic diagrams of the transmission in the processing example 9 of the uplink transmission/feedback method based on the wireless communication time division duplex system according to the method embodiment of the present invention
  • 11a and 1b are transmission diagrams in a processing example 10 of an uplink transmission/feedback method based on a wireless communication time division duplex system according to an embodiment of the method of the present invention
  • FIGS. 12a and 12b are diagrams showing an embodiment of the method according to the present invention. Transmission diagram in the processing example 11 of the uplink transmission/feedback method based on the wireless communication time division duplex system
  • FIGS. 13a and 13b are diagrams showing the uplink transmission/feedback method based on the wireless communication time division duplex system according to the method embodiment of the present invention Processing diagram of the transmission in the example 12;
  • Figs. 14a and 14b are diagrams showing the transmission in the processing example 13 of the uplink transmission/feedback method based on the wireless communication time division duplex system according to the method embodiment of the present invention;
  • Figs. 14a and 14b are diagrams showing the transmission in the processing example 13 of the uplink transmission/feedback method based on the wireless communication time division duplex system according to the method embodiment of the present invention; Figs.
  • 15a and 15b are only A transmission diagram in the processing example 14 of the uplink transmission/feedback method based on the wireless communication time division duplex system according to the method embodiment of the present invention
  • 16a and 16b are transmission diagrams in a processing example 15 of an uplink transmission/feedback method based on a wireless communication time division duplex system according to an embodiment of the method of the present invention
  • FIGS. 17a and 17b are diagrams showing an embodiment of the method according to the present invention.
  • FIG. 18 is an uplink transmission/feedback method based on the wireless communication time division duplex system according to the method embodiment of the present invention, configured for three ratios
  • FIG. 19a, b, and c are schematic diagrams showing the transmission of response messages in the three proportional configuration modes of FIG. 18.
  • FIG. 20 is a timing diagram based on wireless communication according to Embodiment 1 of the present invention.
  • FIG. 21 is a block diagram of an uplink transmission/feedback system based on a wireless communication time division duplex system in accordance with a second embodiment of the present invention.
  • an uplink extended data sub-package (or called The transmission and feedback mechanism of the uplink extended data packet, and the mechanism for transforming the TDD mode is required.
  • an embodiment of the present invention provides an uplink transmission/feedback scheme based on a TDD system, which enables a terminal to transmit an extended data sub-packet on two consecutive uplink physical frames or three uplink physical frames, and causes the base station to The transmission and feedback of the extended data sub-packets used by the terminal fills in the gaps in the related art.
  • an uplink transmission/feedback method based on a wireless communication time division duplex system is provided, wherein the wireless communication time division duplex system is based on downlink transmission including a continuous first number of downlink physical frames
  • the block is used for downlink transmission and will include a continuous second number of uplink physical frames.
  • the row transport block is used for uplink transmission, and the sum of the first quantity and the second quantity is 8.
  • an uplink transmission/feedback method based on a wireless communication time division duplex system includes step S102, step S104, step S106, and step S108.
  • Step S102 The terminal sends an uplink extended data sub-packet (also referred to as an uplink extended data packet) to the base station by using two consecutive or three uplink physical frames of the uplink transport block.
  • an uplink extended data sub-packet also referred to as an uplink extended data packet
  • Step S104 the base station demodulates the received uplink extended data sub-packet;
  • Step S106 based on the demodulation result, the base station according to the uplink physical frame used by the terminal, the predetermined downlink physical frame of the downlink transport block after the uplink transport block (or may be Determining, by the predetermined correspondence between the uplink physical frame and the downlink physical frame, the predetermined downlink physical frame, sending a response message indicating whether the uplink extended data sub-packet is successfully demodulated (for example, ACK/NACK, the ACK indicates that the base station successfully demodulated Extended data sub-packet, NACK indicates that the base station does not successfully demodulate the extended data sub-packet); or, the base station transmits the response message only if the demodulation is successful;
  • Step S108 for the uplink extended data sub-demodulation failure (NACK)
  • NACK uplink extended data sub-demodulation failure
  • the base station After the base station performs uplink extended data sub-packet demodulation, if the base station demodulates the uplink extended data sub-packet, the response message for demodulating the uplink extended data sub-packet is successful; if the base station demodulates the uplink extended data sub-packet, the demodulated uplink extended data sub-packet The response message of the packet failure.
  • the retransmission threshold may be set in advance, and in the case that the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches the retransmission threshold, retransmission is not performed.
  • the uplink extended data packet is successfully demodulated. The position of the corresponding uplink physical frame in the next uplink transport block is consistent with the position of the uplink physical frame that sends the uplink extended data sub-packet in the uplink transport block.
  • the first quantity and the second quantity value may include the following configuration cases: the first quantity is 6, the second quantity is 2 (ie, TDD6:2 mode); the first quantity is 5, the second quantity The number is 3 (ie, TDD5:3 mode); the first quantity is 4, the second quantity is 4 (ie, TDD4:4 mode); the first quantity is 3, and the second quantity is 5 (ie, TDD3: 5 mode) ).
  • the uplink feedback/transmission process in the above various configurations will be described in detail below with reference to the accompanying drawings.
  • one downlink transmission block is composed of 5 consecutive downlink physical frames
  • one uplink transmission block is composed of 3 consecutive uplink physical frames.
  • the uplink transmission block of the initial transmission of the uplink extended data sub-packet is unrestricted in the position of the superframe, and the start position may be in the first uplink transmission block of the superframe, or may be in the superframe.
  • the second uplink transport block, the boundary of the superframe has no limitation on the HARQ retransmission processing of the uplink extended data sub-packets.
  • the uplink physical frame used by the terminal may be the first two uplink physical frames in the uplink transport block, or the last two uplink physical frames, or all three uplink physical frames, which is not limited by the present invention.
  • the downlink physical frame used by the base station may also be different.
  • the predetermined downlink physical frame is determined according to the following manner:
  • the predetermined downlink physical frame is the second downlink physical frame or the third downlink physical frame in the downlink transport block, for example, the base station
  • the second or third downlink physical frame may be used to send a response message according to a preset corresponding rule
  • the predetermined downlink physical frame is the third downlink physical frame or the fourth downlink physical frame in the downlink transport block.
  • the base station may send the third or fourth downlink physical frame by using a preset corresponding rule. a response message; (3)
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block. Selecting one of the three physical frames in the middle to send the response message is because, compared to the first downlink physical frame and the last downlink physical frame in the downlink transport block, selecting the intermediate physical frame can ensure that the terminal and the base station have relative More processing time.
  • the base station does not have enough time to perform the response processing because the uplink physical frame of the uplink extended data sub-packet is sent too close to the terminal. If the last physical frame is selected to send the response message, although the processing time of the base station is sufficient, However, since the location of the next uplink transport block is too close, the terminal does not have enough time to perform a transmission or retransmission operation according to the response message of the base station. The above problem can be avoided by selecting the three downlink physical frames in the middle to send a response message.
  • step S108 for the uplink extended data sub-packet of demodulation success (ACK), the terminal sends another uplink extended data sub-packet in the corresponding uplink physical frame in the next uplink transport block (the HARQ retransmission processing method of other extended data sub-packets) The same as the processing method of the extended data subpacket described above).
  • the retransmission threshold (N) may be set in advance, and in the case that the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches the retransmission threshold, retransmission is not performed. For example, you can set N to 5.
  • the retransmission uplink extended data sub-packet sent for the first time is a first-level retransmission uplink extended data sub-packet.
  • the base station If the base station correctly demodulates the first-level retransmission uplink extended data sub-packet, in the downlink transport block composed of the next five consecutive downlink physical frames, the base station sends an ACK message at the predetermined physical frame position; if the base station does not have If the first-level retransmission uplink extended data sub-packet is correctly demodulated, the base station sends a NACK message in the foregoing predetermined physical frame position in the downlink transport block composed of the next five consecutive downlink physical frames.
  • the terminal demodulates the ACK/NACK message.
  • the terminal If it is an ACK message, indicating that the base station successfully demodulates the data, the terminal sends the corresponding 2 or 3 physical frame positions on the uplink transport block composed of the next three consecutive uplink physical frames.
  • Other uplink extended data sub-packets if it is a NACK message, indicating that the base station still does not successfully demodulate the data, the terminal is in the corresponding two or three physical frame positions on the uplink transport block composed of the next three consecutive uplink physical frames.
  • the second-level retransmission extended data sub-packets are sent on the corresponding channel resources until the number of transmissions reaches the retransmission threshold or the base station demodulates successfully.
  • Example 1 The terminal transmits the uplink extended data sub-packet in the first two physical frames of the uplink transport block, as shown in Figure 2 (a) and Figure 2 (b), the first two physical frames of the first uplink transport block of the superframe On R0 and R1, the terminal transmits an uplink extended data sub-packet P0 to the base station.
  • the base station correctly demodulates P0, the ACK message is sent in the second or third downlink physical frame position in the next downlink transport block; that is, the ACK message can be in the physical Send on frame F6 or F7.
  • the terminal After receiving the ACK message, the terminal sends other data sub-packets P, 0 on the first two physical frame positions R3 and R4 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0.
  • the NACK message is sent in the second or third downlink physical frame position in the next downlink transport block, that is, the NACK message can be in the physical The frame is sent on the F6 or F7; in other words, the base station sends a NACK on one of the two downlink physical frames F6 and F7 according to a certain corresponding rule.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the first two physical frame positions R3 and R4 of the next uplink transport block. If the base station correctly demodulates the first-level retransmission extended data sub-packet, the ACK message is sent in the second or third downlink physical frame position in the next downlink transport block; after receiving the ACK message, the terminal is connected The first two physical frame positions of the downlink transport block are sent to transmit other data sub-packets P,0.
  • a NACK message is sent in the second or third downlink physical frame position in the next downlink transport block.
  • the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the first two physical frame positions of the next uplink transport block.
  • the ACK message is sent in the second or third downlink physical frame position in the next downlink transport block, and the terminal receives the ACK message, which is in the corresponding physics.
  • the frame position transmits another data sub-packet; if the base station does not correctly demodulate the uplink extended data sub-packet, the NACK message is sent in the second or third downlink physical frame position in the next downlink transport block, and the terminal receives the NACK message,
  • the Nth-level retransmission data sub-packet needs to be sent on the corresponding channel resource of the corresponding physical frame position, and the maximum value of N is ⁇ 5, which can also be taken as other positive integers.
  • Example 2 The terminal transmits the uplink extended data sub-packet in the first two physical frames of the uplink transport block, as shown in Figure 3 (a) and Figure 3 (b), the last two physical frames of the first uplink transport block of the superframe On R1 and R2, the terminal transmits an uplink extended data sub-packet P0 to the base station.
  • the ACK message is sent in the third or fourth downlink physical frame position in the next downlink transport block; that is, the ACK message may be To send on physical frame F7 or F8.
  • the terminal After receiving the ACK message, the terminal sends other data sub-packets P, 0 on the last two physical frame positions R4 and R5 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0. As shown in FIG.
  • the base station if the base station does not correctly demodulate P0, the base station sends a NACK message at the third or fourth downlink physical frame position in the next downlink transport block, that is, the NACK message can be in the physical The frame is sent on the F7 or F8; in other words, the base station sends a NACK on one of the two downlink physical frames F7 and F8 according to a certain corresponding rule.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the last two physical frame positions R4 and R5 of the next uplink transport block.
  • the ACK message is sent in the third or fourth downlink physical frame position in the next downlink transport block; after receiving the ACK message, the terminal is connected The other two physical frame positions of the uplink transport block are sent to transmit other data sub-packets P,0. If the base station still does not correctly demodulate the first-level retransmission extended data sub-packet, the NACK message is transmitted in the third or fourth downlink physical frame position in the next downlink transport block. After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the last two physical frame positions of the next uplink transport block.
  • the ACK message is sent in the third or fourth downlink physical frame position in the next downlink transport block, and the terminal receives the ACK message, which is in the corresponding physics.
  • the frame position transmits another data sub-packet; if the base station does not correctly demodulate the uplink extended data sub-packet, the NACK message is sent in the third or fourth downlink physical frame position in the next downlink transport block, and the terminal receives the NACK message,
  • the Nth-level retransmission data sub-packet needs to be sent on the corresponding channel resource of the corresponding physical frame position, and the maximum value of N is ⁇ 5, which can also be taken as other positive integers.
  • Example 3 The terminal transmits uplink extended data sub-packets in three physical frames of the uplink transport block, as shown in FIG. 4(a) and FIG. 4(b), three physical frames R0 in the first uplink transport block of the superframe, On R1 and R2, the terminal transmits an uplink extended data sub-packet P0 to the base station.
  • the base station correctly demodulates P0
  • the ACK message is transmitted at the third physical frame position in the next downlink transport block; that is, the ACK message is transmitted on the physical frame F7.
  • the terminal transmits other data sub-packets P, 0 on the three physical frame positions R3, R4 and R5 of the next uplink transport block.
  • the transmission processing method is the same as that of the data sub-packet P0.
  • the NACK message is transmitted at the third physical frame position in the next downlink transport block, that is, the NACK message is transmitted on the physical frame F7.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the three physical frame positions R3, R4 and R5 of the next uplink transport block.
  • the ACK message is sent in the third physical frame position in the next downlink transport block; after receiving the ACK message, the terminal transmits in the next uplink.
  • the other physical sub-packets P, 0 are transmitted at the three physical frame positions of the block.
  • a NACK message is sent at the third physical frame position in the next downlink transport block. After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the three physical frame positions of the next uplink transport block.
  • the ACK message is sent at the third physical frame position in the next downlink transport block, and the terminal receives the ACK message, and transmits the other physical frame position. If the base station does not correctly demodulate the uplink extended data sub-packet, the NACK message is sent in the third physical frame position in the next downlink transport block, and the terminal receives the NACK message at the corresponding physical frame position.
  • the Nth level retransmission data sub-packet needs to be sent on the corresponding channel resource, and the maximum value of N is ⁇ 5, which can also be taken as other positive integers.
  • the terminal by causing the terminal to transmit the extended data sub-packets on two consecutive consecutive three or three uplink physical frames, and causing the base station to send a response on any downlink physical frame of the predetermined downlink physical frame of the downlink transport block.
  • the message implements the transmission and feedback of the uplink extended data sub-packets in the TDD5:3 mode.
  • one downlink transmission block is composed of 4 consecutive downlink physical frames
  • one uplink transmission block is composed of 4 consecutive uplink physical frames.
  • the uplink transmission block of the initial transmission sent by the uplink extended data sub-packet is not limited in the position of the superframe, and the starting position may be the first uplink transmission block of the superframe or the second uplink of the superframe.
  • Transport block, superframe boundary to uplink expansion There is no limit to the HARQ retransmission processing of the extended data sub-packets.
  • the uplink physical frame used by the terminal may be the first two uplink physical frames in the uplink transport block, or may be the last two uplink physical frames, or may be all three uplink physical frames, which is not limited by the present invention.
  • the uplink physical frame used for the uplink transmission of the extended data sub-packet and the downlink physical frame used for the response by the base station may be pre-set with a mapping relationship.
  • the downlink used by the base station is different according to the uplink physical frame used by the terminal. Physical frames may also differ.
  • the predetermined downlink physical frame is determined as follows:
  • the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block; (2) when the terminal uses the uplink transmission When the uplink extended data sub-packet is sent in the last three uplink physical frames of the block, the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block;
  • the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the fourth downlink physical frame in the downlink transport block.
  • step S108 for the uplink extended data sub-packet of demodulation success (ACK), the terminal sends another uplink extended data sub-packet in the corresponding uplink physical frame in the next uplink transport block (the HARQ retransmission processing method of other extended data sub-packets) The same as the processing method of the extended data subpacket described above).
  • the retransmission threshold (N) may be set in advance, and in the case that the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches the retransmission threshold, retransmission is not performed. For example, you can set N to 5.
  • the retransmission uplink extended data sub-packet sent for the first time is a first-level retransmission uplink extended data sub-packet.
  • the base station If the base station correctly demodulates the first-level retransmission uplink extended data sub-packet, in the downlink transport block composed of the next four consecutive downlink physical frames, the base station sends an ACK message at the predetermined physical frame position; if the base station does not have The first stage retransmission uplink extended data sub-packet is correctly demodulated, and in the downlink transport block composed of the next four consecutive downlink physical frames, the base station sends a NACK message at the predetermined physical frame position.
  • the terminal demodulates the ACK/NACK message. If it is an ACK message, indicating that the base station successfully demodulates the data, the terminal sends the corresponding 2 or 3 physical frame positions on the uplink transport block composed of the next 4 consecutive uplink physical frames.
  • uplink extended data sub-packets if it is a NACK message, indicating that the base station still does not successfully demodulate the data, the terminal is in the corresponding 2 or 3 physical frame positions on the uplink transport block composed of the next 4 consecutive uplink physical frames.
  • the second-level retransmission extended data sub-packets are sent on the corresponding channel resources until the number of transmissions reaches the retransmission threshold or the base station demodulates successfully.
  • the transmission process of the uplink extended data sub-packet in Case 2 will be further described below with reference to an example.
  • Example 4 The terminal transmits the uplink extended data sub-packet in the first three physical frames of the uplink transport block, as shown in Figure 5 (a) and Figure 5 (b), the first three physical frames of the first uplink transport block of the superframe On R0, R1 and R2, the terminal transmits an uplink extended data sub-packet P0 to the base station.
  • the base station correctly demodulates P0
  • the ACK message is transmitted at the second downlink physical frame (F5) position in the next downlink transport block.
  • the terminal After receiving the ACK message, the terminal sends other data sub-packets P, 0 on the first three physical frame positions R4, R5 and R6 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0.
  • the base station if the base station does not correctly demodulate P0, the base station transmits a NACK message at the second downlink physical frame (F5) position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the first three physical frame positions R4, R5 and R6 of the next uplink transport block.
  • the ACK message is sent in the second downlink physical frame position in the next downlink transport block; after receiving the ACK message, the terminal is in the next uplink.
  • the other three data frame positions of the transport block transmit other data sub-packets P, 0.
  • the NACK message is sent in the second downlink physical frame position in the next downlink transport block. After receiving the NACK message, the terminal sends the corresponding channel resource in the first three physical frame positions of the next uplink transport block.
  • the second level retransmits the extended data sub-packet R2P0.
  • the ACK message is sent in the second downlink physical frame position in the next downlink transport block, and the terminal receives the ACK message, and sends the corresponding physical frame position.
  • the NACK message is sent in the second downlink physical frame position in the next downlink transport block, and the terminal receives the NACK message, and the corresponding physical frame
  • the Nth level retransmission data sub-packet needs to be sent on the corresponding channel resource of the location, and the maximum value of N is generally 5, and may also be taken as other positive integers.
  • Example 5 The terminal transmits the uplink extended data sub-packet in the last three physical frames of the uplink transport block, as shown in FIG. 6( a ) and FIG. 6 ( b ), and the last three physical frames of the first uplink transport block of the superframe On R1, R2 and R3, the terminal transmits an uplink extended data sub-packet P0 to the base station. As shown in FIG. 6(a), if the base station correctly demodulates P0, the ACK message is transmitted at the third downlink physical frame (F6) position in the next downlink transport block.
  • F6 downlink physical frame
  • the terminal After receiving the ACK message, the terminal sends other data sub-packets P, 0 on the last three physical frame positions R5, R6 and R7 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0.
  • the base station if the base station does not correctly demodulate P0, the base station transmits a NACK message at the third downlink physical frame (F6) position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the last three physical frame positions R5, R6 and R7 of the next uplink transport block. If the base station correctly demodulates the first-level retransmission extended data sub-packet, the ACK message is sent in the third downlink physical frame position in the next downlink transport block; after receiving the ACK message, the terminal is in the next uplink. The other data sub-packets P, 0 are transmitted at the last three physical frame positions of the transport block.
  • a NACK message is sent at the third downlink physical frame position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the last three physical frame positions of the next uplink transport block.
  • the ACK message is sent in the third downlink physical frame position in the next downlink transport block, and the terminal receives the ACK message,
  • the corresponding physical frame position sends another data sub-packet;
  • the base station does not correctly demodulate the uplink extended data sub-packet, the NACK message is sent in the third downlink physical frame position in the next downlink transport block, and the terminal receives the NACK message,
  • the Nth-level retransmission data sub-packet needs to be sent on the corresponding channel resource of the corresponding physical frame position, and the maximum value of N is generally 5, and may also be taken as other positive integers.
  • Example 6 The terminal transmits the uplink extended data sub-packet in the first two physical frames of the uplink transport block, as shown in Figure 7 (a) and Figure 7 (b), the first two physical frames of the first uplink transport block of the superframe On R0 and R1, the terminal transmits an uplink extended data sub-packet P0 to the base station. As shown in FIG. 7(a), if the base station correctly demodulates P0, the ACK message is transmitted at the second physical frame (F5) position in the next downlink transport block.
  • the terminal After receiving the ACK message, the terminal sends other data sub-packets P, 0 on the first two physical frame positions R4 and R5 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0.
  • the base station if the base station does not correctly demodulate P0, the base station transmits a NACK message at the second physical frame (F5) position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the first two physical frame positions R4 and R5 of the next uplink transport block.
  • the ACK message is sent in the second physical frame position in the next downlink transport block; after receiving the ACK message, the terminal transmits in the next uplink.
  • the first two physical frame positions of the block send other data sub-packets P,0.
  • a NACK message is sent at the second physical frame position in the next downlink transport block. After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the first two physical frame positions of the next uplink transport block.
  • the ACK message is sent in the second physical frame position in the next downlink transport block, and the terminal receives the ACK message, and sends the other physical frame position.
  • Data sub-packet if the base station does not correctly demodulate the uplink extended data sub-packet, the NACK message is sent in the second physical frame position in the next downlink transport block, and the terminal receives the NACK message, at the corresponding physical frame position.
  • the Nth level needs to be sent on the corresponding channel resource. Retransmit the data sub-packet, the maximum value of N is ⁇ : 5, and can also be taken as other positive integers.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the first two physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 7 The terminal transmits the uplink extended data sub-packet in the middle of the uplink transport block. Referring to FIG. 8( a ) and FIG. 8 ( b ), it is easy to understand that the terminal uses the middle two uplink physical frames R1 and R2 to send uplink. In the case of the extended data sub-packet, the base station will send an ACK/NACK message in the downlink physical frame F6.
  • the HARQ retransmission processing method is similar to the above process, and will not be repeatedly described herein.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the middle two physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 8 The terminal transmits the uplink extended data sub-packet in the last two physical frames of the uplink transport block. Referring to FIG. 9( a ) and FIG. 9 ( b ), it is easy to understand that two uplink physical frames R2 and R3 are sent for uplink after the terminal is used. In the case of the extended data sub-packet, the base station will send an ACK/NACK message at the position of the downlink physical frame F7, and the HARQ retransmission processing method is similar to the above process, and will not be repeatedly described herein.
  • TDD4:4 is implemented by causing the terminal to transmit the extended data sub-packets on two consecutive consecutive three or three uplink physical frames, and causing the base station to send a response message in a predetermined downlink physical frame of the downlink transport block. The transmission and feedback of the uplink extended data sub-packets in the mode.
  • one downlink transmission block is composed of three consecutive downlink physical frames, and one uplink transmission block is composed of five consecutive uplink physical frames.
  • the uplink transmission block of the initial transmission of the uplink extended data sub-packet is unrestricted in the position of the superframe, and the starting position may be the first uplink transmission block of the superframe or the second of the superframe.
  • the uplink transport block, the boundary of the superframe has no limitation on the HARQ retransmission processing of the uplink extended data sub-packets.
  • the uplink physical frame used by the terminal may It is any two or three consecutive uplink physical frames of the five uplink physical frames of the uplink transport block, which is not limited by the present invention.
  • the uplink physical frame used for the uplink transmission of the extended data sub-packet and the downlink physical frame used for the response by the base station may be pre-set with a mapping relationship.
  • the base station uses the uplink physical frame used by the terminal.
  • the downlink physical frames will also differ, specifically:
  • the predetermined downlink physical frame is the first downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block;
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block;
  • the predetermined downlink physical frame is the first downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block.
  • step S108 for the uplink extended data sub-packet of demodulation success (ACK), the terminal sends another uplink extended data sub-packet in the corresponding uplink physical frame in the next uplink transport block (the HARQ retransmission processing method of other extended data sub-packets) The same as the processing method of the extended data subpacket described above).
  • the retransmission threshold (N) may be set in advance, and the number of uplink extensions failed in demodulation If the number of transmissions of the sub-packets reaches the retransmission threshold, the retransmission is not performed. For example, you can set N to 5.
  • the retransmission uplink extended data sub-packet sent for the first time is a first-level retransmission uplink extended data sub-packet.
  • the base station If the base station correctly demodulates the first-level retransmission uplink extended data sub-packet, in the downlink transport block composed of the next three consecutive downlink physical frames, the base station sends an ACK message at the predetermined physical frame position; if the base station does not have The first stage retransmission uplink extended data sub-packet is correctly demodulated, and in the downlink transport block composed of the next three consecutive downlink physical frames, the base station sends a NACK message at the predetermined physical frame position.
  • the terminal demodulates the ACK/NACK message. If it is an ACK message, indicating that the base station successfully demodulates the data, the terminal corresponds to consecutive two or three physical frames on the uplink transport block composed of the next five consecutive uplink physical frames.
  • the location sends other uplink extended data sub-packets; if it is a NACK message, indicating that the base station still does not successfully demodulate the data, the terminal corresponds to consecutive two or three consecutive uplink transport blocks composed of the next five consecutive uplink physical frames.
  • the second-level retransmission extended data sub-packets are sent on the corresponding channel resources of the physical frame position until the number of transmissions reaches the retransmission threshold or the base station demodulates successfully.
  • the above embodiments will be further described below in conjunction with examples.
  • Example 9 The terminal transmits the uplink extended data sub-packet in the first three physical frames of the uplink transport block, as shown in FIG. 10( a ) and FIG.
  • the terminal sends an uplink extended data sub-packet P0 to the base station.
  • the base station if the base station correctly demodulates P0, the base station transmits an ACK message at the first downlink physical frame (F3) position in the next downlink transport block. After receiving the ACK message, the terminal transmits other data sub-packets P, 0 on the first three physical frame positions R5, R6, and R7 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0. As shown in FIG.
  • the base station if the base station does not correctly demodulate P0, the base station transmits a NACK message at the first downlink physical frame (F3) position in the next downlink transport block. After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the first three physical frame positions R5, R6, and R7 of the next uplink transport block. If the base station correctly demodulates the first-level retransmission extended data sub-packet, the ACK message is sent in the first downlink physical frame position in the next downlink transport block; after receiving the ACK message, the terminal is in the next uplink. The other three data frame positions of the transport block are sent with other data sub-packets P,0.
  • the NACK message is sent in the first downlink physical frame position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the first three physical frame positions of the next uplink transport block.
  • the ACK message is sent in the first downlink physical frame position in the next downlink transport block, and the terminal receives the ACK message, which is in the corresponding uplink physical frame position.
  • the base station if it does not correctly demodulate the uplink extended data sub-packets, it sends a NACK message at the first physical frame position in the next downlink transport block, and the terminal receives the NACK message, which is in the corresponding uplink physics.
  • the Nth level retransmission data sub-packet needs to be sent on the corresponding channel resource of the frame position, and the maximum value of N is generally 5, and may also be taken as other positive integers.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the first three physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 10 The terminal transmits the uplink extended data sub-packet in the middle three physical frames of the uplink transport block.
  • FIG. 11( a ) and FIG. 11 ( b ) it is easy to understand that the intermediate three uplink physical frames R1, R2, and When the R3 sends the uplink extended data sub-packet, the base station sends an ACK/NACK message in the downlink physical frame F4.
  • the HARQ retransmission processing method is similar to the above process, and the description is not repeated here.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the intermediate three physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 11 The terminal transmits the uplink extended data sub-packet in the last three physical frames of the uplink transport block, as shown in FIG. 12( a ) and FIG. 12 ( b ), and the last three physical frames of the first uplink transport block of the superframe On R2, R3, and R4, the terminal sends an uplink extended data sub-packet P0 to the base station.
  • the base station if the base station correctly demodulates P0, the base station transmits an ACK message at the third downlink physical frame (F5) position in the next downlink transport block. After receiving the ACK message, the terminal transmits other data sub-packets P, 0 on the last three physical frame positions R7, R8, and R9 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0.
  • the base station if the base station does not correctly demodulate P0, the base station transmits a NACK message at the third downlink physical frame (F5) position in the next downlink transport block.
  • the terminal receives the NACK After the message, the first-level retransmission extended data sub-packet R1P0 is transmitted on the corresponding channel resources on the last three physical frame positions R7, R8, and R9 of the next uplink transport block.
  • the ACK message is sent in the third downlink physical frame position in the next downlink transport block; after receiving the ACK message, the terminal is in the next uplink.
  • the other three data frame positions of the transport block transmit other data sub-packets P,0.
  • a NACK message is sent at the third downlink physical frame position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the last three physical frame positions of the next uplink transport block.
  • the ACK message is sent in the third downlink physical frame position in the next downlink transport block, and the terminal receives the ACK message, which is at the corresponding uplink physical frame position.
  • the Nth level retransmission data sub-packet needs to be sent on the corresponding channel resource of the frame position, and the maximum value of N is generally 5, and may also be taken as other positive integers.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the last three physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 12 The terminal transmits the uplink extended data sub-packet in the first two physical frames of the uplink transport block, as shown in Figure 13 (a) and Figure 13 (b), the first two physical frames of the first uplink transport block of the superframe On R0 and R1, the terminal transmits an uplink extended data sub-packet P0 to the base station. As shown in FIG.
  • the base station if the base station correctly demodulates P0, the ACK message is transmitted at the first physical frame (F3) position in the next downlink transport block. After receiving the ACK message, the terminal sends other data sub-packets P, 0 on the first two physical frame positions R5 and R6 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0.
  • the base station transmits a NACK message at the first physical frame (F3) position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the first two physical frame positions R5 and R6 of the next uplink transport block. If the base station correctly demodulates the first-level retransmission extended data sub-packet, the ACK message is sent in the first physical frame position in the next downlink transport block; after receiving the ACK message, the terminal transmits in the next uplink. The first two physical frame positions of the block send other data sub-packets P, 0. If the base station still does not correctly demodulate the first level retransmission extended data sub-packet, a NACK message is sent at the first physical frame position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the first two physical frame positions of the next uplink transport block. Similarly, if the base station correctly demodulates the uplink extended data sub-packet, the ACK message is sent in the first physical frame position in the next downlink transport block, and the terminal receives the ACK message, and sends the corresponding uplink physical frame position.
  • the NACK message is sent in the first physical frame position in the next downlink transport block, and the terminal receives the NACK message, and the corresponding uplink physical frame
  • the Nth level retransmission data sub-packet needs to be sent on the corresponding channel resource of the location, and the maximum value of N is ⁇ 5, which can also be taken as other positive integers.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the first two physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 13 The terminal transmits the uplink extended data sub-packet in the second and third physical frame of the uplink transport block. Referring to FIG.
  • the uplink physical frame R1 and R2 send the uplink extended data sub-packet.
  • the base station sends an ACK/NACK message in the downlink physical frame F4.
  • the HARQ retransmission processing method is similar to the above process, and the description is not repeated here.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the second and third physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 14 The terminal transmits the uplink extended data sub-packets in the third and fourth physical frames of the uplink transport block. Referring to FIG. 15(a) and FIG.
  • the uplink physical frame R1 and R2 send the uplink extended data sub-packet.
  • the base station will send an ACK/NACK message at the downlink physical frame F5.
  • the HARQ retransmission processing method is similar to the above process, and will not be repeatedly described herein.
  • the technical solution provided by the example implements feedback and retransmission when the terminal uses the third and fourth physical frames of the uplink transport block to transmit the uplink extended data sub-packets.
  • Example 15 The terminal transmits the uplink extended data sub-packet in the last two physical frames of the uplink transport block. Referring to FIG. 16( a ) and FIG.
  • TDD3:5 is implemented by causing the terminal to transmit the extended data sub-packets on two consecutive consecutive three or three uplink physical frames, and causing the base station to send a response message in a predetermined downlink physical frame of the downlink transport block. The transmission and feedback of the uplink extended data sub-packets in the mode.
  • step S102 the terminal needs to send the uplink extended data sub-packets to the base station by using two uplink physical frames of the uplink transport block; and the uplink transport block of the initial transmission sent by the uplink extended data sub-packets is not limited in the position of the superframe.
  • the starting position may be in the first uplink transport block of the superframe, or in the second uplink transport block of the superframe, and the boundary of the superframe has no limitation on the HARQ retransmission processing of the uplink extended data sub-packet.
  • the third or fourth physical frame in the downlink transport block and which physical frame is used to respond, and the corresponding rule may be used according to a preset rule. It is to be determined that the present invention is not limited thereto.
  • the third or fourth downlink physical frame may be used to transmit the response message. This is because selecting these two physical frames can ensure that the terminal and the base station have relatively more processing time than other downlink physical frames in the downlink transport block.
  • the base station does not have enough time to perform the response processing because the uplink physical frame of the uplink extended data sub-packet is too close to the terminal, and if the last physical frame is selected, the response is sent.
  • the terminal does not have enough time to perform a transmission or retransmission operation according to the response message of the base station. The above problem can be avoided by selecting the third or fourth downlink physical frame to send a reply message.
  • step S108 for the uplink extended data sub-packet of demodulation success (ACK), the terminal transmits other uplink extended data sub-packets in the two uplink physical frames of the next uplink transport block (the HARQ retransmission processing method of other extended data sub-packets) The same as the processing method of the extended data subpacket described above).
  • the retransmission threshold (N) may be set in advance, and in the case that the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches the retransmission threshold, retransmission is not performed. For example, you can set N to 5.
  • the retransmission uplink extended data sub-packet sent for the first time is a first-level retransmission uplink extended data sub-packet.
  • the base station If the base station correctly demodulates the first-level retransmission uplink extended data sub-packet, in the downlink transport block composed of the next six consecutive downlink physical frames, the base station sends an ACK message at the predetermined physical frame position; if the base station does not have If the first-level retransmission uplink extended data sub-packet is correctly demodulated, the base station sends a NACK message in the foregoing predetermined physical frame position in the downlink transport block composed of the next six consecutive downlink physical frames.
  • the terminal demodulates the ACK/NACK message.
  • the terminal If it is an ACK message, indicating that the base station successfully demodulates the data, the terminal sends another uplink extended data element on the corresponding channel resource on the uplink transport block composed of the next two consecutive uplink physical frames. If the packet is a NACK message, indicating that the base station still does not successfully demodulate the data, the terminal sends the second-level retransmission extended data sub-packet on the corresponding channel resource of the uplink transport block composed of the next two consecutive uplink physical frames, until The number of transmissions reaches the retransmission threshold or the base station demodulates successfully.
  • the transmission process of the extended data sub-packet in Case 4 will be further described below with reference to an example. As shown in FIG. 17 (a) and FIG.
  • the terminal transmits the uplink extended data sub-packet P0 to the base station.
  • the base station correctly demodulates P0, the base station sends an ACK message at the third downlink physical frame (F8) or the fourth downlink physical frame (F9) position in the next downlink transport block. That is, the ACK message can be sent on the physical frame F8 or F9.
  • the terminal transmits other data sub-packets P, 0 on the two physical frame positions R2 and R3 of the next uplink transport block.
  • the HARQ retransmission processing method of the other data sub-packets P, 0 is the same as that of the data sub-packet P0.
  • the base station if it does not correctly demodulate P0, it will transmit in the next downlink.
  • the third downlink physical frame (F8) or the fourth downlink physical frame (F9) position in the block transmits a NACK message, that is, the NACK message can be transmitted on the physical frame F8 or F9.
  • the terminal After receiving the NACK message, the terminal sends the first-level retransmission extended data sub-packet R1P0 on the corresponding channel resources on the first three physical frame positions R2 and R3 of the next uplink transport block.
  • the ACK message is sent in the third downlink physical frame or the fourth downlink physical frame position in the next downlink transport block; after the terminal receives the ACK message, And transmitting other data sub-packets P, 0 on the corresponding channel resources of the two physical frame positions of the next uplink transport block. If the base station still does not correctly demodulate the first-level retransmission extended data sub-packet, the NACK message is sent in the third downlink physical frame or the fourth downlink physical frame position in the next downlink transport block.
  • the terminal After receiving the NACK message, the terminal sends the second-level retransmission extended data sub-packet R2P0 on the corresponding channel resource of the two physical frame positions of the next uplink transport block.
  • the ACK message is sent in the third downlink physical frame or the fourth downlink physical frame position in the next downlink transport block, and the terminal receives the ACK message,
  • the two uplink physical frames of the uplink transport block send other data sub-packets; if the base station does not correctly demodulate the uplink extended data sub-packets, the third downlink physical frame or the fourth downlink physical frame position in the next downlink transport block
  • the NACK message is sent, and the terminal receives the NACK message, and sends the Nth-level retransmission data sub-packet in the two uplink physical frames of the uplink transport block.
  • the TDD 6:2 mode is implemented by causing the terminal to transmit the extended data sub-packets on two physical frames of the uplink transport block and causing the base station to send a response message on a predetermined downlink physical frame of the downlink transport block. Transmission and feedback of the next uplink extended data sub-packet.
  • the base station and the terminal do not send data, and then the base station receives the uplink data sent by the terminal through another uplink transport block composed of 4 consecutive uplink physical frames, at the fourth time interval, The base station and the terminal do not send data. Then, the base station sends downlink data to the terminal through another downlink transport block composed of 4 consecutive downlink physical frames.
  • the base station and the terminal do not send data, and then, the base station The receiving terminal further transmits uplink data sent by another uplink transport block composed of 4 consecutive uplink physical frames.
  • the uplink and downlink PHY frames may be transmitted in the following manner: the base station and the terminal transmit data in units of superframes, and within a superframe duration, the base station first sends a preamble to the terminal. And transmitting downlink data to the terminal by using a downlink transport block consisting of three consecutive downlink physical frames. At the first time interval, the base station and the terminal do not send data, and then the base station receives the uplink formed by the terminal through four consecutive uplink physical frames. The uplink data sent by the transport block, the base station and the terminal do not send data at the second time interval, and then the base station sends downlink data to the terminal through another downlink transport block composed of three consecutive downlink physical frames, in the third time.
  • the base station and the terminal do not send data, and then the base station receives the uplink data sent by the terminal through another uplink transport block composed of 5 consecutive uplink physical frames.
  • the base station and the terminal do not send data.
  • the base station sends another downlink transmission block composed of 3 consecutive downlink physical frames to the terminal.
  • Line data in the fifth time interval the base station and the terminal is not sending data, then the base station then receives the uplink data terminal 5 through successive frames of the physical uplink another uplink transmission block transmitted.
  • the uplink and downlink PHY frames may be transmitted in the following manner: the base station and the terminal transmit data in units of superframes, and within a superframe duration, the base station first sends a preamble to the terminal. And transmitting downlink data to the terminal by using a downlink transport block consisting of 5 consecutive downlink physical frames. At the first time interval, the base station and the terminal do not send data, and then, the base station receives the uplink formed by the terminal through three consecutive uplink physical frames. The uplink data sent by the transport block, the base station and the terminal do not send data at the second time interval, and then the base station sends downlink data to the terminal through another downlink transport block composed of 5 consecutive downlink physical frames, in the third time.
  • the base station and the terminal do not send data, and then the base station receives the uplink data sent by the terminal through another uplink transport block composed of three consecutive uplink physical frames.
  • the base station and the terminal do not send data.
  • the base station sends another downlink transmission block consisting of 5 consecutive downlink physical frames to the terminal.
  • Line data in the fifth time interval the base station and the terminal is not sending data, then the base station then receives the uplink data terminal through 3 consecutive frames of the physical uplink another uplink transmission block transmitted.
  • Step S1802 The terminal sends an uplink extended data sub-packet to the base station by using an uplink physical frame in a fixed position in the uplink transport block.
  • the terminal may be located at a terminal at the edge of the cell, or may be a terminal located at another location.
  • Step S 1804 the base station receives and demodulates the extended data sub-packet, and sends a response message indicating whether the uplink extended data sub-packet is successfully demodulated in the downlink physical frame of the fixed position in the downlink transport block after the uplink transport block; Alternatively, the base station transmits the response message only if the demodulation is successful. Specifically, if the base station correctly demodulates, an ACK message is sent, and if it is not properly demodulated, a NACK message is sent.
  • the uplink physical frame of the fixed position in the uplink transport block is the last three uplink physical frames in the uplink transport block, and the downlink physical frame in the fixed position of the downlink transport block after the uplink transport block is the third downlink in the downlink transport block.
  • the retransmission threshold may be set in advance before the processing shown in FIG. 18 is performed, and in the case where the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches the retransmission threshold, retransmission is not performed.
  • the retransmission threshold may be set in advance, and in the case that the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches the retransmission threshold, retransmission is not performed.
  • the uplink extended data for demodulation is successful.
  • the position of the corresponding uplink physical frame in the next uplink transport block is consistent with the position of the uplink physical frame that sends the uplink extended data sub-packet in the uplink transport block.
  • the terminal and the base station transmit or feed back in the same uplink/downlink physical frame when the system adopts different TDD modes, so that when the terminal changes from one TDD mode to another TDD mode.
  • the system uses the system to transmit the uplink extended data packet and the physical frame position of the base station to transmit the feedback information does not change, thereby simplifying the complexity of system processing.
  • the uplink physical frame of the fixed location is the last three uplink physical frames in the uplink transport block, and the downlink physical frame of the fixed location is the third downlink physical frame of the downlink transport block.
  • the processing shown in Fig. 18 can be better understood by the schematic diagram shown in Fig. 19.
  • ⁇ Port diagram 19 shows that in the TDD 4:4 mode, the terminal transmits an uplink extended data sub-packet at R1, R2, and R3, and the base station transmits a response message (ACK/NACK) at F6; as shown in Fig. 19 (b) In the TDD5:3 mode, the terminal sends an uplink extended data sub-packet at R0, R1, and R2, and the base station sends a response message (ACK/NACK) at F7; as shown in FIG. 19(c), in the TDD3:5 mode.
  • the terminal sends an uplink extended data sub-packet at R2, R3, and R4, and the base station sends a response message (ACK/NACK) at F5; thus, whether the terminal switches between cells using different TDD modes, or is used by the cell where the terminal is located.
  • the TDD mode is changed, as long as the cell before and after the handover uses any two of the above TDD modes, or the system used by the terminal can be guaranteed as long as the cell mode of the terminal is changed before and after the two modes are used.
  • the physical frame position for transmitting the uplink extended data packet and the base station transmitting the feedback information does not change, thereby simplifying the complexity of system processing.
  • an uplink transmission/feedback system based on a wireless communication time division duplex system is provided.
  • An uplink transmission/feedback system based on a wireless communication TDD system according to an embodiment of the present invention includes a base station and one or more terminals, and can be based on a time division duplex mode of TDD 4:4, TDD 3:5, TDD 5:3, and TDD 6:2. Transmission/feedback of uplink extended data sub-packets.
  • 20 is a diagram showing uplink transmission based on a wireless communication TDD system according to an embodiment of the present invention/ A block diagram of the feedback system. For convenience of description, only one base station and one terminal are shown in FIG. As shown in FIG.
  • the terminal in an uplink transmission/feedback system based on a wireless communication TDD system according to an embodiment of the present invention, includes: an uplink transmission unit 2002, a response message demodulation unit 2004, and a retransmission unit 2006, where the base station includes: Tuning unit 2008, downlink transmission unit 2010.
  • the uplink transmission unit 2002 is configured to send an uplink extended data sub-packet to the base station by using two consecutive three or three uplink physical frames of the uplink transport block;
  • the response message demodulation unit 2004 is configured to receive and demodulate the response message sent by the base station.
  • the downlink transmission unit determines the predetermined downlink physical frame as follows: (1) When the terminal transmits the uplink extended data sub-packet when using the first two uplink physical frames of the uplink transport block, the downlink physics is scheduled.
  • the frame is a second downlink physical frame or a third downlink physical frame in the downlink transport block, that is, the downlink transmission unit may use the second or third downlink physical frame to send a response message according to a preset corresponding rule;
  • the predetermined downlink physical frame is the third downlink physical frame or the fourth downlink physical frame in the downlink transport block, that is, the downlink transmission unit may The third or fourth downlink physical frame is used to send the response message according to the preset corresponding rule;
  • the predetermined downlink physical frame is scheduled. Is the third downlink physical frame in the downlink transport block.
  • the predetermined downlink physical frame is determined as follows:
  • the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block;
  • the terminal uses the uplink transmission Send uplink extended data when the first two uplink physical frames of the block When the sub-packet, the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block;
  • the predetermined downlink physical frame is the fourth downlink physical frame in the downlink transport block.
  • the predetermined downlink physical frame is determined as follows:
  • the predetermined downlink physical frame is the first downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the second downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block
  • the predetermined downlink physical frame is the third downlink physical frame in the downlink transport block.
  • the predetermined downlink physical frame is the third or fourth physical frame in the downlink transport block, and the specific physical frame is used for the response, and may be determined according to a preset corresponding rule.
  • the invention has no limitation on this.
  • the third or fourth downlink physical frame is used to send the response message because, compared to other downlink physical frames in the downlink transport block, selecting the two physical frames can ensure that the terminal and the base station have relatively more Processing time.
  • the base station does not have enough time to perform the response processing because the uplink physical frame of the uplink extended data sub-packet is too close to the terminal, if the last one is selected.
  • the physical frame transmits a response message.
  • the terminal does not have enough time to perform a transmission or retransmission operation according to the response message of the base station because the location of the next uplink transport block is too close. The above problem can be avoided by selecting the third or fourth downlink physical frame to send a reply message.
  • Figure 21 is a block diagram showing the structure of an uplink transmission/feedback system in accordance with a preferred embodiment of the present invention.
  • the system includes a terminal 1 and a base station 2, wherein the terminal transmits an extended data sub-packet using an uplink physical frame at a fixed position in the uplink transport block, and the base station receives and demodulates the extended data sub-packet, and transmits the extended data sub-packet in the uplink transport block.
  • the downlink physical frame of the fixed position in the subsequent downlink transport block transmits a response message indicating whether the uplink extended data sub-packet is successfully demodulated.
  • the uplink physical frame of the fixed location is the last three uplink physical frames in the uplink transport block, and the downlink physical frame of the fixed location is the third downlink physical frame of the downlink transport block.
  • the terminal 1 further includes: a response message demodulating unit 12, configured to receive and demodulate a response message, and determine whether the uplink extended data sub-packet is successfully demodulated according to the response message; Module 14, for the uplink extended data sub-packet for demodulation failure, in the next uplink transport block
  • the uplink physical frame of the fixed location is sent to retransmit the uplink extended data sub-packet.
  • a retransmission threshold setting module 16 configured to set a retransmission threshold, and in case the number of transmissions of the uplink extended data sub-packets failed to be demodulated reaches a retransmission threshold, the retransmission module is no longer Retransmission is performed, where the retransmission uplink extended data sub-packet sent by the retransmission module is the n-th retransmission uplink extended data sub-packet,
  • the terminal transmits the extended data sub-packets on two consecutive consecutive three or three uplink physical frames, and causes the base station to be in the predetermined downlink physical frame of the downlink transport block.
  • Sending a response message on a downlink physical frame may enable the base station and the terminal to have relatively sufficient time to parse the data or message from the other party and perform subsequent processing, thereby realizing transmission and feedback of the uplink extended data sub-packet and retransmission, thereby making up for the correlation.
  • 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. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • 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)

Abstract

Procédé d'émission montante / de rétroaction basé sur un système de communication sans fil à duplexage par répartition dans le temps, comportant les étapes suivantes : un terminal envoie un sous-paquet de données étendues montantes à une station de base en utilisant 2 ou 3 trames physiques montantes consécutives d'un bloc d'émission montante ; la station de base démodule le sous-paquet de données étendues montantes reçu et, en fonction du résultat de la démodulation et sur la base de la trame physique montante utilisée par le terminal, la station de base envoie un message de réponse dans la trame physique descendante prédéterminée d'un bloc d'émission descendante après le bloc d'émission montante qui indique si le sous-paquet de données étendues montantes a été démodulé avec succès ; la station de base peut également n'envoyer un message de réponse que lorsque la démodulation a réussi ; dans le cas où le sous-paquet de données étendues montantes n'est pas démodulé avec succès, le terminal envoie un sous-paquet de données étendues montantes de réémission dans la trame physique montante correspondante du bloc suivant d'émission montante.
PCT/CN2009/070518 2008-02-25 2009-02-24 Procédé d'émission montante / de rétroaction basé sur un système de communication sans fil à duplexage par répartition dans le temps WO2009105990A1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
CN2008100806347A CN101521908B (zh) 2008-02-25 2008-02-25 基于无线通信时分双工系统的上行传输/反馈方法及系统
CN200810080634.7 2008-02-25
CN200810086367.4 2008-03-26
CN 200810086362 CN101547073B (zh) 2008-03-26 2008-03-26 基于无线通信时分双工系统的上行传输/反馈方法及系统
CN 200810086367 CN101547074B (zh) 2008-03-26 2008-03-26 基于无线通信时分双工系统的上行传输/反馈方法及系统
CN200810086362.1 2008-03-26
CN200810086361.7 2008-03-26
CN200810086360A CN101547071B (zh) 2008-03-26 2008-03-26 基于无线通信时分双工系统的上行传输/反馈方法及系统
CN200810086360.2 2008-03-26
CN 200810086361 CN101547072B (zh) 2008-03-26 2008-03-26 基于无线通信时分双工系统的上行传输/反馈方法

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CN115174011A (zh) * 2022-04-15 2022-10-11 中国科学院沈阳自动化研究所 面向高可靠通信的工业无线上行重传方法

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CN104041128A (zh) * 2012-09-05 2014-09-10 华为技术有限公司 一种信息传递方法、第一网络设备及系统
CN104041128B (zh) * 2012-09-05 2018-03-27 华为技术有限公司 一种信息传递方法、第一网络设备及系统
CN115174011A (zh) * 2022-04-15 2022-10-11 中国科学院沈阳自动化研究所 面向高可靠通信的工业无线上行重传方法
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