WO2013071861A1 - 一种发送数据块的方法及设备 - Google Patents

一种发送数据块的方法及设备 Download PDF

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Publication number
WO2013071861A1
WO2013071861A1 PCT/CN2012/084572 CN2012084572W WO2013071861A1 WO 2013071861 A1 WO2013071861 A1 WO 2013071861A1 CN 2012084572 W CN2012084572 W CN 2012084572W WO 2013071861 A1 WO2013071861 A1 WO 2013071861A1
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Prior art keywords
data block
harq rtt
network side
sent
tti
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PCT/CN2012/084572
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English (en)
French (fr)
Inventor
李龠
王力
马洁
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华为技术有限公司
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Publication of WO2013071861A1 publication Critical patent/WO2013071861A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end

Definitions

  • the present application claims priority to Chinese patent application filed on November 14, 2011, the Chinese Patent Office, the application number is 201110360148.2, and the invention name is "a method and device for transmitting data blocks". The entire contents of which are incorporated herein by reference.
  • the present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting a data block.
  • a UE User Equipment
  • HARQ RTT Hybrid Automatic Repeat Request Round-Trip Time
  • the transmission time interval (transmission time interval) in the round-trip delay is used to send data blocks to the network side.
  • the UE is scheduled by the network side, and the UE sends a data block in a certain TTI in the current HARQ RTT, which is assumed to be the first frame, and the current four consecutive HARQ RTTs are four consecutive times.
  • the first TTI included in the HARQ RTT is used as a reserved TTI for retransmitting the data block. If the data block fails to be transmitted, the UE resends the data block in the reserved TTI of the data block, where : The UE cannot send other data blocks within the reserved TTI of the data block.
  • the UE needs to reserve four TTIs for retransmission in four consecutive HARQ RTTs after the current HARQ RTT, and the reserved four TTIs cannot be used to transmit other data blocks even if they are not occupied, so a lot of waste. resource of.
  • a method for transmitting a data block comprising:
  • Extracting the data block from the buffer if the data block is not the last data block to be sent, when the TTI is used to transmit the data block in the HARQ RTT, the data block is sent to the network side according to the scheduling information;
  • the data block is used to send the data block in the next HARQ RTT adjacent to the HARQ RTT, and the data block is retransmitted according to the scheduling information to the network side;
  • the data block is fetched from the buffer, and if the data block is not the last data block to be transmitted, it is used in the next HARQ RTT adjacent to the HARQ RTT When the TTI of the data block is sent, the data block is sent to the network side according to the scheduling information.
  • an apparatus for transmitting a data block comprising:
  • a first sending module configured to: retrieve a data block from the buffer, and if the data block is not the last data block to be sent, transmit the data block in the hybrid automatic repeat request round-trip delay HARQ RTT When the time interval is TTI, the data block is sent to the network side according to the scheduling information.
  • a first retransmission module configured to: when the first sending module does not successfully send the data block, when used to send a data block in a next HARQ RTT adjacent to the HARQ RTT, according to the scheduling Information resending the data block to the network side;
  • a second sending module configured to: if the first sending module successfully sends the data block, extract a data block from the buffer, if the data block is not the last data block that needs to be sent, When the TTI for transmitting the data block in the next HARQ RTT adjacent to the HARQ RTT is described, the data block is sent to the network side according to the scheduling information.
  • the HARQ when a certain TTI in a HARQ RTT is transmitted, the HARQ is determined.
  • the data block is transmitted within the TTI determined in the RTT. If the data block is not successfully transmitted, the data block is retransmitted in the same frame in the next HARQ RTT. If the data block is successfully transmitted, the same block is in the next HARQ RTT. Send other data blocks.
  • for resending the data block
  • the data block is not successfully transmitted, and the data block is preferentially re-transmitted in the next HARQ RTT, thereby fully utilizing the time slot resource. , reduce waste of resources.
  • FIG. 1 is a flowchart of a method for transmitting a data block according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for transmitting a data block according to another embodiment of the present invention
  • FIG. 3 is another embodiment of the present invention
  • FIG. 4 is a flowchart of a method for transmitting a data block according to another embodiment of the present invention
  • FIG. 5 is a flowchart of a method for transmitting a data block according to another embodiment of the present invention
  • FIG. 6 is a schematic diagram of an apparatus for transmitting a data block according to an embodiment of the present invention.
  • the present invention provides an embodiment of a method for transmitting a data block, including: Step 101: Retrieving a data block from a buffer, if the data block is not the last data block to be sent, When the TTI of the data block is used in the HARQ RTT, the data block is sent to the network side according to the scheduling information.
  • Step 102 If the data block is not successfully sent, when the TTI of the data block is sent in the next HARQ RTT adjacent to the HARQ RTT, the data block is retransmitted according to the scheduling information to the network side;
  • Step 103 If the data block is successfully sent, the data block is taken out from the buffer, and if the extracted data block is not the last data block to be sent, it is used for sending in the next HARQ RTT adjacent to the HARQ RTT. When the TTI of the data block is transmitted, the extracted data block is sent to the network side according to the scheduling information.
  • the present invention when a certain TTI transmission data block in the HARQ RTT is determined, the data block is sent in the TTI determined in the HARQ RTT, and if the data block is not successfully sent, the same TTI is in the next HARQ RTT.
  • the data block is retransmitted internally, and if the data block is successfully transmitted, other data blocks are transmitted within the same TTI in the next HARQ RTT.
  • the present invention provides another embodiment of a method for transmitting a data block, including:
  • Step 201 When the UE needs to send the data block to the network side, the UE sends a scheduling request to the network side.
  • the UE When the UE needs to send the data block to the network side, the UE first caches the data block that needs to be sent in the buffer, and then The scheduling request is sent to the network side, and the network side scheduling is requested.
  • the UE needs to transmit the first data block, the second data block, and the first The three data blocks are buffered in the buffer, and then the UE requests the network side to schedule and send the buffered first data block, the second data block, and the third data block to the network side.
  • Step 202 The UE receives the scheduling information sent by the network side through the control channel, and obtains the ⁇ receiving the scheduling information.
  • the network side After receiving the scheduling request sent by the UE, the network side allocates resources for the UE, selects a TTI in a HARQ RTT, and sends scheduling information to the UE through the control channel in the selected TTI.
  • the control channel may be a PDCCH (Physical Downlink Control Channel) channel or an AICH (Acquisition Indicator Channel) channel
  • the allocated resource may be a frequency resource
  • the scheduling information may include a modulation coding mode and an allocated channel.
  • Information such as the location of the resource.
  • the HARQ RTT is a retransmission period, and one HARQ RTT may include eight ⁇ .
  • Step 203 The UE determines, according to the ⁇ receiving the scheduling information, the TTI used to send the data block in the HARQ RTT, and extracts a data block from the buffer.
  • the UE may directly determine the TTI for receiving the scheduling information as the TTI for transmitting the data block, or may determine the Nth TTI after receiving the TTI of the scheduling information as the TTI for sending the data block, where N is greater than or equal to 1. And less than or equal to 8, then the UE may send a data block to the network side when transmitting the TTI of the data block in each HARQ RTT.
  • the ⁇ receiving the scheduling information is the first TTI in the HARQ RTT
  • the UE may directly determine the first TTI as the TTI for transmitting the data block, that is, the UE may send the first TTI of each HARQ RTT.
  • the data block is sent to the network side.
  • the UE may determine the second TTI after the first TTI as the TTI for transmitting the data block, and the second TTI after the first TTI is the third TTI in the HARQ RTT. That is, the UE may send a data block to the network side at the third TTI of each HARQ RTT.
  • the UE receives the scheduling information sent by the network side in the first TTI of the HARQ RTT, determines that the TTI used to send the data block is the first one in the HARQ RTT, and then from the buffer. Take out the first data block.
  • Step 204 The UE determines whether the extracted data block is the last data block that needs to be sent. If not, step 205 is performed, and if yes, step 209 is performed;
  • Step 205 The UE sends, in the HARQ RTT, a data block that is sent according to the received scheduling information to the network side.
  • the scheduling information may include information such as a modulation and coding mode and a resource location.
  • the UE when transmitting the extracted data block, the UE may first encode the extracted data block according to the modulation and coding manner, and find the corresponding resource according to the resource location. For example, for the spectrum, etc., the encoded data block is transmitted through the sought resource.
  • the network side receives the data block sent by the UE and sends a feedback message to the UE. If the received data block has no error, the feedback message sent by the network side to the UE is a success message, and the success message is used to indicate to the UE that the message is successful. Receiving the data block sent by the UE; if the received data block is in error, the feedback message sent by the network side to the UE is a reception failure message, and the reception failure message is used to indicate to the UE that the data block sent by the UE is not successfully received.
  • the receiving success message may be an ACK, and the receiving failure message may be a NACK.
  • the UE after receiving the scheduling information in the first TTI of the HARQ RTT, the UE then fetches the first data block, and waits until the first TTI of the next HARQ RTT, and sends the first data block that is sent according to the received scheduling information.
  • the network side receives the first data block sent by the UE, and assumes that the network side successfully receives the first data block, and the network side sends a success message to the UE.
  • Step 206 The UE receives the feedback message sent by the network side. If the received feedback message is a success message, the process proceeds to step 207. If the received feedback message is a failure message, the process proceeds to step 208.
  • Step 207 The UE waits for the ⁇ of the next HARQ RTT for transmitting the data block, and takes a data block from the remaining data block in the buffer, and returns to step 204;
  • the UE waits for the ⁇ of the next HARQ RTT to send the data block, and extracts the second data block from the second data block and the third data block remaining in the buffer, and then sends according to the received scheduling information.
  • the second data block is taken out to the network side, and if the network side is not successfully connected
  • the UE sends a reception failure message to the UE. After receiving the reception failure message, the UE performs step 208.
  • Step 208 The UE waits for the HAR in the next HARQ RTT to send the data block, and retransmits the extracted data block to the network side according to the received scheduling information, and performs step 206;
  • the UE may wait until the TTI of the next HARQ RTT for transmitting the data block to resend the data block until the data block is successfully sent to the network side.
  • the UE determines whether the number of retransmissions of the data block is less than the maximum number of retransmissions, and if yes, performs step (2), and if not, performs step (3);
  • the initial value of the number of retransmissions of each data block may be 0 or 1. If the UE does not successfully send the data block to the network side, the UE may resend the data block, and the number of times the data block is retransmitted does not exceed the maximum number of retransmissions.
  • the initial value of the number of retransmissions of each data block is set to 0 and the maximum number of retransmissions is 2, so the UE determines that the number of retransmissions of the second data block is 0 less than the maximum retransmission.
  • the number of times 2, step 209 is performed.
  • the number of retransmissions of the data block may be increased by: increasing the number of retransmissions of the data block by one or two equal values.
  • the specific value added is not limited.
  • the network side may resend the data block in the TTI for sending the data block in the next HARQ RTT.
  • Network side For example, when the UE waits for the first TTI of the next HARQ RTT, it resends the second data block to the network side according to the received scheduling information, and adds 1 to the number of retransmissions of the second data block to obtain retransmission of the second data block.
  • the number of times is 1; the network side receives the second data block retransmitted by the UE, and if the network has not successfully received the second data block, the network side sends a reception failure message to the UE; the UE determines the number of retransmissions of the second data block. If the number of retransmissions is less than 2, and waits until the first TTI of the next HARQ RTT, the second data block is retransmitted according to the received scheduling information to the network side, and the number of retransmissions of the second data block is increased by 1 to obtain the second.
  • the number of retransmissions of the data block is 2; the network side receives the second data block retransmitted by the UE.
  • the network side If the network side successfully receives the second data block, the network side sends a success message to the UE, and the UE waits until the next one.
  • the first TTI of the HARQ RTT takes the third data block from the remaining third data block in the buffer, and then returns to step 204.
  • the UE discards the data block, and waits for the TTI in the next HARQ RTT to send a data block, and takes a data block from the remaining data block in the buffer, and returns to step 204;
  • the number of times the UE is allowed to resend the data block does not exceed the maximum number of retransmissions. If the number of retransmissions of a data block is equal to the maximum number of retransmissions, that is, the number of retransmissions of the data block has reached the maximum number of retransmissions, the UE may The data block is discarded directly and the remaining data blocks continue to be transmitted.
  • Step 209 The UE sends the data block and the indication information for indicating that the data block is the last data block to the network side according to the received scheduling information in the ⁇ of the HARQ RTT for sending the data block.
  • the network side receives the data block and the indication information sent by the UE, determines, according to the received indication information, that the received data block is the last data block that the UE needs to send, and determines whether the received data block has an error, and if an error occurs,
  • the feedback information sent to the UE is a reception failure message, and the number of retransmissions of the data block is increased; if there is no error, the feedback information sent to the UE is a reception success message.
  • the network side may allow the UE to resend the last data block, but allows the UE to re- The number of times the last data block is sent does not exceed the maximum number of retransmissions, and the initial value of the number of retransmissions of the last data block in the network side is the same as the initial value of the number of retransmissions of the last data block in the UE, and the network The value of the maximum number of retransmissions allowed on the side is the same as the value of the maximum number of retransmissions allowed by the UE.
  • the third data block and the indication information for indicating that the third data block is the last data block are sent to the network side according to the received scheduling information at the first TTI in the next HARQ RTT.
  • the network side receives the third data block and the indication information, and determines, according to the indication information, that the received third data block is the last data block that the UE needs to send, and assumes that the third data block received by the network side is in error, and the network side sends and receives.
  • the failure message is sent to the UE and the initial value of the number of retransmissions of the third data block is incremented by one to obtain the number of retransmissions of the third data block being one.
  • Step 210 The UE receives the feedback message sent by the network side. If the feedback message is a success message, the UE allocates the resources allocated by the network side, and ends the operation. If the message is a failure, the number of retransmissions of the data block is less than the maximum number of retransmissions. , then step 211 is performed;
  • Step 211 The UE waits for the ⁇ of the next HARQ RTT to send the data block, and retransmits the data block to the network side according to the received scheduling information, and performs step 210.
  • the UE determines whether the number of retransmissions of the data block is less than the maximum number of retransmissions. If not, retransmits the data block to the network side when transmitting the TTI of the data block in the next HARQ RTT. And increasing the number of retransmissions of the data block, returning to step 210, if yes, discarding the data block, releasing resources allocated by the network side, stopping continuing to send the data block to the network side, and ending the operation.
  • the network side receives the data block retransmitted by the UE, determines whether the received data block has an error, and if there is no error, sends a reception success message to the UE, and if an error occurs, determines whether the number of retransmissions of the data block is less than the maximum retransmission. Number of times, if no, discard the data block, stop continuing to receive the UE to resend the data block, send a reception failure message to the UE, and end the operation. If yes, send a reception failure message to the UE, and increase the data block. The number of retransmissions.
  • the network side determines that the third data block is in error, sending a reception failure message to the UE;
  • the UE receives the reception failure message, and determines that the number of retransmissions 0 of the third data block is less than the maximum number of retransmissions 2 in the first TTI of the HARQ RTT, and retransmits the third data block to the network side, and the third data block is sent.
  • the number of retransmissions 0 plus 1 obtains the number of retransmissions of the third data block 1; the network side receives the third data block retransmitted by the UE, assuming that the received third data block is still in error, and the network side determines the weight of the third data block.
  • the number of transmissions 1 is less than the maximum number of retransmissions 2, and the receiving and receiving failure message is sent to the UE, and the number of retransmissions 1 of the third data block is increased by 1 to obtain the number of retransmissions of the third data block 2; the UE receives the reception failure message, and determines the third The number of retransmissions 1 of the data block is less than the maximum number of retransmissions 2, and the third data block is retransmitted to the network side at the first TTI of the next HARQ RTT, and the number of retransmissions of the third data block is incremented by one to obtain the first The number of retransmissions of the three data blocks is 2; the network side receives the third data block sent by the UE, and assumes that the third data block received by the network side is still in error, and the network side determines that the number of retransmissions 2 of the third data block is equal to the maximum number of retransmissions.
  • the data block when a certain TTI transmission data block in the HARQ RTT is determined, the data block is sent in the TTI determined in the HARQ RTT, and if the data block is not successfully sent, the same TTI is in the next HARQ RTT.
  • the data block is retransmitted internally, and if the data block is successfully transmitted, other data blocks are transmitted within the same TTI in the next HARQ RTT.
  • the data block is preferentially retransmitted in the next HARQ RTT, thereby fully utilizing the time slot resource. , reduce waste of resources.
  • the method for transmitting a data block provided by another embodiment of the foregoing method for transmitting a data block may be applied to an LTE system. Referring to FIG. 4, the method includes:
  • Step 301 The UE caches the data block that needs to be sent in a buffer, and sends a scheduling request to the network side. After receiving the scheduling request sent by the UE, the network side allocates resources for the UE, selects one ⁇ in one HARQ RTT, and sends scheduling information to the UE through the PDCCH channel in the selected ⁇ .
  • Step 302 The UE receives the scheduling information sent by the network side through the PDCCH channel, determines a TTI for sending the data block according to the TTI that receives the scheduling information, and takes out a data block from the buffer.
  • the network side may also send the scheduling information to the UE through the RRC message in advance, and the UE receives the scheduling information and buffers the received scheduling information.
  • the UE when the UE needs to send the data block to the network side, the UE first sends a scheduling request to the UE.
  • the network side requests the network side scheduling, and after receiving the scheduling request of the UE, the network side sends a notification message to the UE through the PDCCH channel, and the UE receives the notification message to determine the UI for transmitting the data block according to the TTI that receives the notification message.
  • Step 303 The UE determines whether the extracted data block is the last data block to be sent. If not, step 304 is performed, and if yes, step 308 is performed;
  • Step 304 The UE sends a data block to be sent to the network side according to the received scheduling information in the ⁇ in the HARQ RTT.
  • the scheduling information may include information such as a modulation and coding mode and a resource location.
  • the UE when transmitting the extracted data block, the UE may first encode the extracted data block according to the modulation and coding manner, and find the corresponding resource according to the resource location. For example, for the spectrum, etc., the encoded data block is transmitted through the sought resource.
  • the network receives the data block sent by the UE and sends a feedback message to the UE. If the data block sent by the UE is successfully received, the feedback message sent by the network to the UE is a success message, and the success message is used to indicate to the UE that the message has been sent to the UE. Successfully receiving the data block sent by the UE; if the data block sent by the UE is not successfully received, the feedback message sent by the network side to the UE is a reception failure message, and the reception failure message is used to indicate to the UE that the data block sent by the UE is not successfully received. .
  • Step 305 The UE receives the feedback message sent by the network side. If the received feedback message is a receiving success message, step 306 is performed. If the received feedback message is a receiving failure message, Step 307;
  • Step 306 The UE waits for the HAR of the next HARQ RTT for transmitting the data block, and takes a data block from the remaining data block in the buffer, and returns to step 303;
  • Step 307 The UE waits for the TTI in the next HARQ RTT to send the data block, retransmits the extracted data block, and performs step 305;
  • the UE may resend the data block until the data block is successfully sent to the network side, and a new data block is taken out from the buffer to be sent to the network side.
  • the step may specifically include the following steps (A) - (C):
  • the number of retransmissions of the data block may be increased by: increasing the number of retransmissions of the data block by one or two equal values.
  • the network side If the network side does not successfully receive the data block that is retransmitted by the UE, the network side continues to send a reception failure message to the UE, and then the UE may resend the data block in the TTI for sending the data block in the next HARQ RTT. Network side.
  • the UE directly discards the data block and continues to transmit the remaining data blocks.
  • Step 308 The UE sends the data block and the indication letter for indicating that the data block is the last data block according to the received scheduling information in the TTI for transmitting the data block in the HARQ RTT.
  • the network side receives the data block and the indication information sent by the UE, determines, according to the received indication information, that the received data block is the last data block that the UE needs to send, and determines whether the data block is correct, and if not, sends the data block to
  • the feedback information of the UE is a reception failure message, and the number of retransmissions of the data block is increased. If it is correct, the feedback information sent to the UE is a reception success message.
  • Step 309 The UE receives the feedback message sent by the network side. If the feedback message is a success message, the UE allocates the resource allocated by the network side, and ends the operation. If the feedback message is a failure message, the number of retransmissions of the data block is less than the maximum. The number of retransmissions, step 310 is performed;
  • Step 310 The UE waits for the ⁇ of the next HARQ RTT to send the data block, and retransmits the retrieved data block to the network side according to the received scheduling information, and performs step 309.
  • the UE determines whether the number of retransmissions of the data block is less than the maximum number of retransmissions, and if yes, retransmits the data block to the network side when transmitting the TTI of the data block in the next HARQ RTT. And increasing the number of retransmissions of the data block, returning to step 309; if not, discarding the data block, stopping continuing to resend the data block, releasing the resources allocated by the network side, and ending the operation.
  • the network side receives the data block retransmitted by the UE, determines whether the received data block has an error, and if there is no error, sends a reception success message to the UE, and if an error occurs, determines whether the number of retransmissions of the data block is less than the maximum retransmission. Number of times, if no, discard the data block, stop continuing to receive the UE to resend the data block, send a reception failure message to the UE, and end the operation. If yes, send a reception failure message to the UE, and increase the data block. The number of retransmissions.
  • the data block when a certain TTI transmission data block in the HARQ RTT is determined, the data block is sent in the TTI determined in the HARQ RTT, and if the data block is not successfully sent, the same TTI is in the next HARQ RTT.
  • the data block is retransmitted internally, and if the data block is successfully transmitted, other data blocks are transmitted within the same TTI in the next HARQ RTT.
  • the data block is preferentially resent in the next HARQ RTT.
  • Step 401 The UE caches the data block that needs to be sent in the buffer, selects a set of preamble competing resources, and sends a selected set of preamble competing resources to the network side;
  • a plurality of preamble competing resources are configured in advance in each UE.
  • the UE needs to send a data block to the network side, the UE selects a set of preamble competing resources, and requests scheduling by using the selected preamble competing resources to the network side; The side allocates scheduling information to the UE after receiving the preamble contention resource, and sends the allocated scheduling information to the UE through the AICH channel.
  • the scheduling information includes an E-DCH (Enhanced Dedicated Channel) resource, a ⁇ and a TA (Timing Advance) for transmitting a data block, and correspondingly, the network side allocates scheduling information to the UE.
  • the E-DCH resource is allocated according to the received preamble contention resource, and the TA is determined according to the received preamble contention resource, and the ⁇ for transmitting the data block is determined.
  • Step 402 The UE receives scheduling information sent by the network side by using an AICH channel, where the scheduling information includes an E-DCH resource, and a ⁇ and a ⁇ used to send the data block.
  • Step 403 The UE sends an acknowledgment message to the network side, and the acknowledgment message carries its own identifier.
  • the identifier of the UE may be an E-RNCH (E-DCH Radio Network Temporary Identifier E-DCH, a wireless network temporary identifier).
  • each UE may be multiple UEs simultaneously selecting the same preamble contention resource and sending the same preamble contention resource to the network side, so that the network side allocates the same E-DCH resource according to the received preamble contention resource and sends it to multiple
  • the UE causes the multiple UEs to compete for the conflict of the E-DCH resources.
  • each UE After receiving the EDCH resources sent by the network side, each UE sends an acknowledgement message to the network side.
  • the network side receives only one acknowledgment message sent by the UE, it indicates that no multiple UEs simultaneously send the same preamble contention request scheduling, and the network sends the acknowledgment message to carry the identity of the UE through the AGCH;
  • the acknowledgment message sent by multiple UEs indicates that multiple UEs simultaneously send the same preambke contention request scheduling, and the network side selects an acknowledgment message, and sends the selected acknowledgment message to carry the identity of the UE through the AGCH.
  • Step 403 The UE receives the identifier sent by the network side to the UE through the AGCH, and takes out a data block from the buffer.
  • Step 404 The UE determines whether the extracted data block is the last data block to be sent. If not, step 405 is performed, and if yes, step 411 is performed;
  • Step 405 The UE sends, in the HARQ RTT, a data block that is sent according to the received scheduling information to the network side.
  • the network side receives the data block sent by the UE and sends a feedback message to the UE. If the data block sent by the UE is successfully received, the feedback message sent by the network side to the UE is a success message, and the success message is used to indicate to the UE. The data block sent by the UE has been successfully received. If the data block sent by the UE is not successfully received, the feedback message sent by the network to the UE is a reception failure message, and the reception failure message is used to indicate to the UE that the data sent by the UE is not successfully received. Piece.
  • Step 406 The UE receives the feedback message sent by the network side. If the received feedback message is a success message, the process proceeds to step 407. If the received feedback message is a failure message, the process proceeds to step 408.
  • Step 407 The UE waits for the ⁇ of the next HARQ RTT for transmitting the data block, and takes a data block from the remaining data block in the buffer, and returns to step 404;
  • Step 408 The UE waits for the ⁇ of the next HARQ RTT to send the data block, retransmits the retrieved data block, and performs step 406;
  • the UE may resend the data block until the data block is successfully sent to the network side, and a new data block is taken out from the buffer to be sent to the network side.
  • this step may specifically include the following steps (a) - (c):
  • the initial value of the number of retransmissions of each data block may be 0 or 1.
  • the number of retransmissions of the data block may be increased by: increasing the number of retransmissions of the data block by one or two equal values.
  • the network side If the network side does not successfully receive the data block that is retransmitted by the UE, the network side continues to send a reception failure message to the UE, and then the UE may resend the data block in the TTI for sending the data block in the next HARQ RTT. Network side.
  • the UE directly discards the data block and continues to transmit the remaining data blocks.
  • Step 409 The UE sends the data block and the indication information for indicating that the data block is the last data block to the network side according to the received scheduling information in the ⁇ of the HARQ RTT for transmitting the data block.
  • the network side receives the data block and the indication information sent by the UE, determines, according to the received indication information, that the received data block is the last data block that the UE needs to send, and determines whether the data block is correct, and if not, sends the data block to
  • the feedback information of the UE is a reception failure message, and the number of retransmissions of the data block is increased. If it is correct, the feedback information sent to the UE is a reception success message.
  • Step 410 The UE receives the feedback message sent by the network side. If the feedback message is a success message, the resource allocated by the network side is released, and the operation ends; if it is a failure message, Perform step 411;
  • Step 411 The UE determines whether the number of retransmissions of the data block is less than the maximum number of retransmissions. If yes, retransmits the data block to the network side when the TTI of the data block is sent in the next HARQ RTT, and adds the data. For the number of retransmissions of the block, go to step 410.
  • the UE determines whether the number of retransmissions of the data block is less than the maximum number of retransmissions, and if yes, retransmits the data block to the network side when transmitting the TTI of the data block in the next HARQ RTT. And increasing the number of retransmissions of the data block, returning to step 410; if not, discarding the data block, stopping to continue to resend the data block, releasing the resources allocated by the network side, and ending the operation.
  • the network side receives the data block retransmitted by the UE, determines whether the received data block has an error, and if there is no error, sends a reception success message to the UE, and if an error occurs, determines whether the number of retransmissions of the data block is less than the maximum retransmission. Number of times, if no, discard the data block, stop continuing to receive the UE to resend the data block, send a reception failure message to the UE, and end the operation. If yes, send a reception failure message to the UE, and increase the data block. The number of retransmissions.
  • the data block when a certain TTI transmission data block in the HARQ RTT is determined, the data block is sent in the TTI determined in the HARQ RTT, and if the data block is not successfully sent, the same TTI is in the next HARQ RTT.
  • the data block is retransmitted internally, and if the data block is successfully transmitted, other data blocks are transmitted within the same TTI in the next HARQ RTT.
  • the data block is preferentially retransmitted in the next HARQ RTT, thereby fully utilizing the time slot resource. , reduce waste of resources. As shown in FIG.
  • the present invention provides an embodiment of a device for transmitting data blocks, including: a first sending module 501, configured to retrieve a data block from a buffer, if the data block is not the last one to be sent.
  • the data block is sent to the network side according to the scheduling information when the data block is used in the HARQ RTT.
  • the first retransmission module 502 is configured to: if the first sending module 501 does not successfully send the data block, when the data block is sent in the next HARQ RTT adjacent to the HARQ RTT, retransmit the according to the scheduling information.
  • the second sending module 503 is configured to: if the first sending module 501 successfully sends the data block, extract the data block from the buffer, if the extracted data block is not the last data block that needs to be sent, then the HARQ RTT phase When the neighboring next HARQ RTT is used to transmit the data block, the extracted data block is sent to the network side according to the scheduling information.
  • the first retransmission module 502 is specifically configured to: when the number of retransmissions of the data block is less than the maximum number of retransmissions, when the TTI of the data block is used in the next HARQ RTT adjacent to the HARQ RTT, according to the scheduling
  • the information resends the data block to the network side, and increases the number of retransmissions of the data block.
  • the device further includes:
  • a first discarding module configured to: if the number of times the first retransmission module 502 retransmits the data block is equal to or greater than a maximum number of retransmissions, discard the data block, and extract a data block from the buffer, if The data block is not the last data block to be transmitted.
  • the TTI of the data block is used in the next HARQ RTT adjacent to the HARQ RTT, the data block is sent to the network side according to the scheduling information.
  • the device further includes:
  • a third sending module configured to: if the data block sent by the first sending module 501 is the last data block to be sent, when the TTI is used to send the data block in the HARQ RTT, send the data block according to the scheduling information.
  • the device further includes:
  • a second retransmission module configured to: when the third sending module successfully sends the data block, release the resource allocated by the network side; when the third sending module does not successfully send the data block, if the number of retransmissions of the data block is less than the maximum The number of retransmissions, then the next HARQ RTT adjacent to the HARQ RTT When the TTI for transmitting a data block is used, the data block is retransmitted and the number of retransmissions of the data block is increased.
  • the device further includes:
  • the second discarding module is configured to discard the data block and release the resources allocated by the network side if the number of times the second retransmission module 502 retransmits the data block is equal to or greater than the maximum number of retransmission times.
  • the device further includes:
  • a determining module configured to receive scheduling information sent by the network side, and determine, according to the received scheduling information, the ⁇ used to send the data block in the HARQ RTT.
  • the data block when a certain data transmission block in the HARQ RTT is determined, the data block is sent in the TTI determined in the HARQ RTT, and if the data block is not successfully sent, the same TTI in the next HARQ RTT.
  • the data block is retransmitted internally, and if the data block is successfully transmitted, other data blocks are transmitted within the same TTI in the next HARQ RTT.
  • the data block is preferentially retransmitted in the next HARQ RTT, thereby fully utilizing the time slot resource. , reduce waste of resources.

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Abstract

本发明公开了一种发送数据块的方法及设备,属于通信领域领域。所述方法包括:从缓冲区中取出数据块,如果所述数据块不是最后一个需要发送的数据块,则在HARQ RTT中用于发送数据块的TTI时,根据调度信息发送所述数据块给网络侧;如果没有成功发送所述数据块,则在所述HARQ RTT相邻的下一个HARQ RTT中用于发送数据块的TTI时,根据所述调度信息重新发送所述数据块给网络侧;如果成功发送所述数据块,则从所述缓冲区中取出数据块,如果所述数据块不是最后一个需要发送的数据块,则在所述HARQ RTT相邻的下一个HARQ RTT中用于发送数据块的TTI时,根据所述调度信息发送所述数据块给网络侧。所述设备包括:第一发送模块、第一重传模块和第二发送模块。本发明能够减少资源浪费。

Description

一种发送数据块的方法及设备 本申请要求于 2011 年 11 月 14 日提交中国专利局、 申请号为 201110360148.2、发明名称为"一种发送数据块的方法及设备"的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及通信领域, 特别涉及一种发送数据块的方法及设备。
背景技术 在通信领域, UE ( User Equipment, 用户设备 )需要在一定的时隙资源 上发送数据块给网络侧, 即 UE需要占用 HARQ RTT ( Hybrid Automatic Repeat Request Round-Trip Time, 混合自动重传请求往返时延) 中的 ΤΉ ( Transmission Time Interval, 传输时间间隔 )来发送数据块给网络侧。
例如, 目前在 LTE ( Long Term Evolution , 长期演进) 系统中网络侧调 度 UE, UE在当前 HARQ RTT中的某个 TTI发送数据块,假设为第一 ΤΉ, 同时将当前 HARQ RTT后的连续四个 HARQ RTT中包括的第一 TTI作为用 于重传该数据块的预留 TTI, 如果该数据块发送失败, UE在该数据块的预 留 TTI内重新发送该数据块, 其中, 需要说明的是: UE在该数据块的预留 TTI内不能发送其他数据块。
UE需要在当前 HARQ RTT后的连续四个 HARQ RTT中预留四个用于 重传的 TTI,且预留的四个 TTI即使未被占用,也不能用于发送其他的数据 块, 如此浪费大量的资源。
发明内容 为了减少资源浪费, 本发明提供了一种发送数据块的方法及设备。 所 述技术方案如下:
一方面, 提供了一种发送数据块的方法, 所述方法包括:
从緩冲区中取出数据块, 如果所述数据块不是最后一个需要发送的数 据块, 则在 HARQ RTT中用于发送数据块的 TTI时, 根据调度信息发送所 述数据块给网络侧;
如果没有成功发送所述数据块, 则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 ΤΉ时根据所述调度信息重新发送所述数 据块给网络侧;
如果成功发送所述数据块, 则从所述緩冲区中取出数据块, 如果所述 数据块不是最后一个需要发送的数据块, 则在所述 HARQ RTT相邻的下一 个 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息发送所述数 据块给网络侧。
另一方面, 提供了一种发送数据块的设备, 所述设备包括:
第一发送模块, 用于从緩冲区中取出数据块, 如果所述数据块不是最 后一个需要发送的数据块, 则在混合自动重传请求往返时延 HARQ RTT中 用于发送数据块的传输时间间隔 TTI时, 根据调度信息发送所述数据块给 网络侧;
第一重传模块, 用于如果所述第一发送模块没有成功发送所述数据块, 则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 ΤΉ 时, 根据所述调度信息重新发送所述数据块给网络侧;
第二发送模块, 用于如果所述第一发送模块成功发送所述数据块, 则 从所述緩冲区中取出数据块, 如果所述数据块不是最后一个需要发送的数 据块,则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息发送所述数据块给网络侧。
在本发明中,确定在 HARQ RTT中的某个 TTI发送数据块时,在 HARQ RTT中确定的 TTI内发送数据块, 如果没有成功发送该数据块, 则在下一 个 HARQ RTT中相同的 ΤΤΙ内重新发送数据块, 如果成功发送该数据块, 则在下一个 HARQ RTT中相同的 ΤΤΙ内发送其他的数据块。 如此当发送完 某个数据块后, 不需要预留 ΤΤΙ用于重新发送该数据块, 且没有成功发送 该数据块, 则在下一个 HARQ RTT中优先重新发送该数据块, 从而充分使 用时隙资源, 减少资源浪费。 附图说明 为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述 中所需要使用的附图作简要介绍, 显而易见地, 下面描述中的附图仅仅是 本发明的一些实施例, 对于本领域的普通技术人员来讲, 在不付出创造性 劳动性的前提下, 还可以根据这些附图获得其他的附图。 图 1是本发明一个实施例提供的一种发送数据块的方法流程图; 图 2是本发明另一个实施例提供的一种发送数据块的方法流程图; 图 3是本发明另一个实施例提供的一种 UE发送数据块的示意图; 图 4是本发明另一个实施例提供的一种发送数据块的方法流程图; 图 5是本发明另一个实施例提供的一种发送数据块的方法流程图; 图 6是本发明一个实施例提供的一种发送数据块的设备示意图。
具体实施方式 为了使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对 本发明作进一步地详细描述, 显然, 所描述的实施例仅仅是本发明一部份 实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术 人员在没有做出创造性劳动前提下所获得的所有其它实施例, 都属于本发 明保护的范围。 如图 1所示, 本发明提供了一种发送数据块方法的一个实施例, 包括: 步骤 101 : 从緩冲区中取出数据块, 如果该数据块不是最后一个需要发 送的数据块, 则在 HARQ RTT中用于发送数据块的 TTI时, 根据调度信息 发送该数据块给网络侧;
步骤 102: 如果没有成功发送该数据块, 则在该 HARQ RTT相邻的下 一个 HARQ RTT中用于发送数据块的 TTI时, 根据该调度信息重新发送该 数据块给网络侧;
步骤 103: 如果成功发送该数据块, 则从緩冲区中取出数据块, 如果取 出的数据块不是最后一个需要发送的数据块, 则在该 HARQ RTT相邻的下 一个 HARQ RTT中用于发送数据块的 TTI时, 根据该调度信息发送取出的 数据块给网络侧。
在本发明实施例中, 确定在 HARQ RTT中的某个 TTI发送数据块时, 在 HARQ RTT中确定的 TTI内发送数据块, 如果没有成功发送该数据块, 则在下一个 HARQ RTT中相同的 TTI内重新发送数据块, 如果成功发送该 数据块, 则在下一个 HARQ RTT中相同的 TTI内发送其他的数据块。 如此 当发送完某个数据块后, 不需要预留 TTI用于重新发送该数据块, 且没有 成功发送该数据块, 则在下一个 HARQ RTT中优先重新发送该数据块, 从 而充分使用时隙资源, 减少资源浪费。 如图 2所示, 本发明提供了一种发送数据块方法的另一个实施例, 包 括:
步骤 201 : UE当需要发送数据块给网络侧时,发送调度请求给网络侧; 其中, 当 UE需要发送数据块给网络侧时, UE先将需要发送的数据块 緩存在緩冲区中, 再发送调度请求给网络侧, 请求网络侧调度。
假设, 在本实施例中, UE将需要发送的第一数据块、 第二数据块和第 三数据块緩存在緩冲区中,然后 UE再请求网络侧调度并发送緩存的第一数 据块、 第二数据块和第三数据块给网络侧。
步骤 202: UE通过控制信道接收网络侧发送的调度信息, 并获取接收 该调度信息的 ΤΉ;
其中, 网络侧接收到 UE发送的调度请求后, 为 UE分配资源, 在一个 HARQ RTT中选择一个 TTI, 在选择的 TTI内并通过控制信道发送调度信 息给 UE。 其中, 控制信道可以为 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道 )信道或 AICH ( Acquisition Indicator Channel, 捕获指示信道)信道, 分配的资源可以为频率资源, 调度信息可以包括调 制编码方式和分配的资源的位置等信息。 其中, 如图 3所示, HARQ RTT 为重传周期, 一个 HARQ RTT可以包括八个 ΤΉ。
步骤 203: UE根据接收调度信息的 ΤΤΙ, 确定出在 HARQ RTT中用于 发送数据块的 TTI, 从緩冲区取出一个数据块;
其中, UE可以直接将接收调度信息的 TTI确定为用于发送数据块的 TTI,也可以将接收调度信息的 TTI后的第 N个 TTI确定为用于发送数据块 的 TTI, N大于或等于 1且小于或等于 8, 然后 UE可以在每个 HARQ RTT 中用于发送数据块的 TTI时发送数据块给网络侧。
例如,接收调度信息的 ΤΉ为 HARQ RTT中的第 1个 TTI, UE可以直 接将第 1个 TTI确定为用于发送数据块的 TTI,即 UE可以在每个 HARQ RTT 的第 1个 TTI时发送数据块给网络侧; UE也可以将第 1个 TTI后的第 2个 TTI确定为用于发送数据块的 TTI,第 1个 TTI后的第 2个 TTI为 HARQ RTT 中的第 3个 TTI, 即 UE可以在每个 HARQ RTT的第 3个 TTI发送数据块 给网络侧。
例如, 如图 3所示, UE在 HARQ RTT的第一个 TTI内接收网络侧发 送的调度信息,确定用于发送数据块的 TTI为 HARQ RTT中的第一个 ΤΉ, 然后从緩冲区中取出第一数据块。 步骤 204: UE判断取出的数据块是否为最后一个需要发送的数据块, 如果否, 则执行步骤 205, 如果是, 则执行步骤 209;
步骤 205: UE在 HARQ RTT中用于发送数据块的 ΤΉ内根据接收的调 度信息发送取出的一个数据块给网络侧;
其中, 调度信息可以包括调制编码方式和资源位置等信息, 相应地, UE在发送取出的一个数据块时, 首先可以根据调制编码方式对取出的数据 块进行编码, 根据资源位置寻找到对应的资源, 例如为频谱等, 通过寻找 的资源发送编码后的数据块。
其中, 网络侧接收 UE发送的数据块后发送反馈消息给 UE, 如果接收 的数据块没有出错, 则网络侧发送给 UE的反馈消息为接收成功消息,该接 收成功消息用于向 UE说明已成功接收 UE发送的数据块;如果接收的数据 块出错,则网络侧发送给 UE的反馈消息为接收失败消息,该接收失败消息 用于向 UE说明没有成功接收 UE发送的数据块。
其中, 接收成功消息可以为 ACK, 接收失败消息可以为 NACK。
例如, UE在 HARQ RTT的第一个 TTI内接收到调度信息后, 然后取 出第一数据块, 等待到下一个 HARQ RTT的第一个 TTI时根据接收的调度 信息发送取出的第一数据块给网络侧; 网络侧接收 UE发送的第一数据块, 假设网络侧成功接收到第一数据块, 网络侧发送接收成功消息给 UE。
步骤 206: UE接收网络侧发送的反馈消息, 如果接收的反馈消息为接 收成功消息, 则执行步骤 207, 如果接收的反馈消息为接收失败消息, 则执 行步骤 208;
步骤 207: UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ 时, 从緩冲区中剩下的数据块中取出一个数据块, 返回步骤 204;
例如, UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ时从 緩冲区中剩下的第二数据块和第三数据块中取出第二数据块, 然后根据接 收的调度信息发送取出的第二数据块给网络侧, 网络侧如果没有成功地接 收 UE发送的第二数据块, 则发送接收失败消息给 UE, UE接收接收失败 消息后, 执行步骤 208。
步骤 208: UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ 时,根据接收的调度信息重新发送取出的该数据块给网络侧,执行步骤 206;
其中, 如果 UE没有成功地将该数据块发送给网络, UE可以等到下一 个 HARQ RTT中的用于发送数据块的 TTI时重新发送该数据块, 直到成功 将该数据块发送给网络侧。
其中, 在本实施例中, 当 UE没有成功地将该数据块发送给网络侧时, 也可以设置 UE 允许重新发送该数据块的次数不超过最大重传次数, 相应 地, 本步骤可以具体包括如下 (1 ) - ( 3 ) 的步骤:
( 1 ) : UE判断该数据块的重传次数是否小于最大重传次数, 如果是, 则执行步骤(2 ), 如果否, 则执行步骤(3 );
其中, 每个数据块的重传次数的初值可以为 0或 1等。 UE如果没有成 功地将数据块发送给网络侧, UE还可以重新发送该数据块, 且重新发送该 数据块的次数不超过最大重传次数。
例如, 4艮设, 在本实施例中设置每个数据块的重传次数的初值为 0 以 及最大重传次数为 2, 所以 UE判断第二数据块的重传次数为 0小于最大重 传次数 2, 执行步骤 209。
( 2 ) : UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ时, 根据接收的调度信息重新发送取出的该数据块给网络侧, 并增加该数据块 的重传次数, 返回步骤 206;
其中, 增加该数据块的重传次数可以具体为: 将该数据块的重传次数 增加 1或 2等值。 其中, 在本实施例中, 对增加的具体值不做限制。
其中,如果网络侧没有成功地接收到 UE重新发送的数据块, 则网络侧 继续发送接收失败消息给 UE,然后 UE可以在下一个 HARQ RTT中用于发 送数据块的 TTI内重新发送该数据块给网络侧。 例如, UE等待到下一个 HARQ RTT的第一个 TTI时根据接收的调度 信息重新发送第二数据块给网络侧, 并将第二数据块的重传次数加 1 得到 第二数据块的重传次数为 1 ; 网络侧接收 UE重新发送的第二数据块, 假设 网络还未成功地接收第二数据块, 则网络侧发送接收失败消息给 UE; UE 判断出第二数据块的重传次数 1 小于最大重传次数 2 , 并等待到下一个 HARQ RTT的第一个 TTI时根据接收的调度信息重新发送第二数据块给网 络侧, 同时将第二数据块的重传次数加 1得到第二数据块的重传次数为 2; 网络侧接收 UE重新发送的第二数据块,假设, 网络侧成功的接收到第二数 据块, 则网络侧发送接收成功消息给 UE, 且 UE等待到下一个 HARQ RTT 的第一个 TTI时从緩冲区中剩下的第三数据块中取出第三数据块, 然后返 回执行步骤 204。
( 3 ): UE丟弃该数据块, 并等待到下一个 HARQ RTT中的用于发送 数据块的 TTI时从緩冲区中剩下的数据块中取出一个数据块, 并返回执行 步骤 204;
其中, UE允许重新发送数据块的次数不超过最大重传次数, 如果某个 数据块的重传次数等于最大重传次数, 即重新发送该数据块的次数已达到 最大重传次数, 则 UE可以直接丟弃该数据块, 并继续发送剩下的数据块。
步骤 209: UE在 HARQ RTT中的用于发送数据块的 ΤΉ内,根据接收 的调度信息发送该数据块和用于指示该数据块为最后一个数据块的指示信 息给网络侧;
其中, 网络侧接收 UE发送的数据块和指示信息,根据接收的指示信息 确定出接收的数据块为 UE需要发送的最后一个数据块,并且判断接收的该 数据块有没有出错, 如果出错, 则发送给 UE的反馈信息为接收失败消息, 并增加该数据块的重传次数; 如果没有出错, 则发送给 UE的反馈信息为接 收成功消息。
其中, 网络侧可以允许 UE重新发送最后一个数据块, 但允许 UE重新 发送最后一个数据块的次数不超过最大重传次数, 且在网络侧内的最后一 个数据块的重传次数的初值与 UE 内的最后一个数据块的重传次数的初值 相同,以及网络侧允许的最大重传次数的值与 UE允许的最大重传次数的值 相同。
例如, UE取出第三数据块后, 在下一个 HARQ RTT中的第一个 TTI 时根据接收的调度信息发送第三数据块和用于指示第三数据块为最后一个 数据块的指示信息给网络侧; 网络侧接收该第三数据块和指示信息, 根据 该指示信息确定出接收的第三数据块为 UE需要发送的最后一个数据块,假 设网络侧接收的第三数据块出错,网络侧发送接收失败消息给 UE并将第三 数据块的重传次数的初值加 1得到第三数据块的重传次数为 1。
步骤 210: UE接收网络侧发送的反馈消息, 如果该反馈消息为接收成 功消息, 则释放网络侧分配的资源, 结束操作; 如果为接收失败消息且该 数据块的重传次数小于最大重传次数, 则执行步骤 211 ;
步骤 211 : UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ 时, 根据接收的调度信息重新发送该数据块给网络侧, 执行步骤 210。
其中, 在本实施例中, UE判断该数据块的重传次数是否小于最大重传 次数, 如果否, 则在下一个 HARQ RTT中的用于发送数据块的 TTI时重新 发送该数据块给网络侧, 并增加该数据块的重传次数, 返回执行步骤 210, 如果是, 丟弃该数据块, 释放网络侧分配的资源, 停止继续发送该数据块 给网络侧, 结束操作。
其中, 网络侧接收 UE重新发送的数据块,判断接收的数据块有没有出 错, 如果没有出错, 则发送接收成功消息给 UE, 如果出错, 则判断该数据 块的重传次数是否小于最大重传次数, 如果否, 则丟弃该数据块, 停止继 续接收 UE重新发送该数据块, 发送接收失败消息给 UE, 并结束操作, 如 果是, 则发送接收失败消息给 UE, 并增加该数据块的重传次数。
例如, 当网络侧判断出第三数据块出错时, 发送接收失败消息给 UE; UE接收到接收失败消息, 在一下 HARQ RTT的第一个 TTI时判断出第三 数据块的重传次数 0小于最大重传次数 2, 重新发送第三数据块给网络侧, 将第三数据块的重传次数 0加 1得到第三数据块的重传次数 1 ; 网络侧接收 UE重新发送的第三数据块, 假设接收的第三数据块还出错, 网络侧判断出 第三数据块的重传次数 1小于最大重传次数 2, 发送接收失败消息给 UE, 并将第三数据块的重传次数 1加 1得到第三数据块的重传次数 2; UE接收 接收失败消息, 判断第三数据块的重传次数 1小于最大重传次数 2, 并在下 一个 HARQ RTT中的第一个 TTI时重新发送第三数据块给网络侧, 将第三 数据块的重传次数 1加 1得到第三数据块的重传次数为 2; 网络侧接收 UE 发送的第三数据块, 假设网络侧接收的第三数据块仍出错, 网络侧判断第 三数据块的重传次数 2等于最大重传次数 2, 发送接收失败消息给 UE, 停 止继续接收 UE重新发送的第三数据块并丟弃第三数据块; UE接收接收失 败消息, 判断第三数据块的重传次数 2等于最大重传次数 2, 丟弃第三数据 块, 释放网络侧分配的资源, 结束继续发送第三数据块。
在本发明实施例中, 确定在 HARQ RTT中的某个 TTI发送数据块时, 在 HARQ RTT中确定的 TTI内发送数据块, 如果没有成功发送该数据块, 则在下一个 HARQ RTT中相同的 TTI内重新发送数据块, 如果成功发送该 数据块, 则在下一个 HARQ RTT中相同的 TTI内发送其他的数据块。 如此 当发送完某个数据块后, 不需要预留 TTI用于重新发送该数据块, 且没有 成功发送该数据块, 则在下一个 HARQ RTT中优先重新发送该数据块, 从 而充分使用时隙资源, 减少资源浪费。 对于上述一种发送数据块方法的另一个实施例提供的发送数据块的方 法可以应用于 LTE系统, 参见图 4, 该方法包括:
步骤 301 : UE将需要发送的数据块緩存在緩冲区中, 并发送调度请求 给网络侧; 其中, 网络侧接收到 UE发送的调度请求后, 为 UE分配资源, 在一个 HARQ RTT中选择一个 ΤΉ,在选择的 ΤΉ内通过 PDCCH信道发送调度信 息给 UE。
步骤 302: UE通过 PDCCH信道接收网络侧发送的调度信息, 根据接 收该调度信息的 TTI确定用于发送数据块的 TTI,从緩冲区中取出一个数据 块;
其中, 网络侧也可以事先通过 RRC消息将调度信息发送给 UE, UE接 收该调度信息后并緩存接收的调度信息;相应地, 当 UE需要发送数据块给 网络侧时, UE先发送调度请求给网络侧请求网络侧调度, 网络侧接收 UE 的调度请求后通过 PDCCH信道发送一个通知消息给 UE, UE接收该通知 消息根据接收该通知消息的 TTI确定用于发送数据块的 ΤΉ。
步骤 303: UE判断取出的数据块是否为最后一个需要发送的数据块, 如果否, 则执行步骤 304, 如果是, 则执行步骤 308;
步骤 304: UE在 HARQ RTT中用于发送数据块的 ΤΉ内根据接收的调 度信息发送取出的一个数据块给网络侧;
其中, 调度信息可以包括调制编码方式和资源位置等信息, 相应地, UE在发送取出的一个数据块时, 首先可以根据调制编码方式对取出的数据 块进行编码, 根据资源位置寻找到对应的资源, 例如为频谱等, 通过寻找 的资源发送编码后的数据块。
其中, 网络接收 UE发送的数据块后发送反馈消息给 UE, 如果成功接 收到 UE发送的数据块, 则网络侧发送给 UE的反馈消息为接收成功消息, 该接收成功消息用于向 UE说明已成功接收 UE发送的数据块;如果未成功 接收到 UE发送的数据块,则网络侧发送给 UE的反馈消息为接收失败消息, 该接收失败消息用于向 UE说明没有成功接收 UE发送的数据块。
步骤 305: UE接收网络侧发送的反馈消息, 如果接收的反馈消息为接 收成功消息, 则执行步骤 306, 如果接收的反馈消息为接收失败消息, 则执 行步骤 307;
步骤 306: UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ 时, 从緩冲区中剩下的数据块中取出一个数据块, 返回步骤 303;
步骤 307: UE待到下一个 HARQ RTT中的用于发送数据块的 TTI时, 重新发送取出的该数据块, 执行步骤 305;
其中, UE可以重新发送该数据块, 直到成功地将该数据块发送给网络 侧, 才从緩冲区中取出一新的数据块来发送给网络侧。
其中,在本实施例中,可以设置 UE允许重新发送该数据块的次数不超 过最大重传次数, 相应地, 本步骤可以具体包括如下 (A ) - ( C ) 的步骤:
( A ) : UE判断该数据块的重传次数是否小于最大重传次数, 如果是, 则执行步骤(B ), 如果否, 则执行步骤(C );
( B ) : UE等待到下一个 HARQ RTT的用于发送数据块的 TTI时, 根 据接收的调度信息重新发送取出的该数据块给网络侧, 并增加该数据块的 重传次数, 返回步骤 305;
其中, 增加该数据块的重传次数可以具体为: 将该数据块的重传次数 增加 1或 2等值。
其中,如果网络侧没有成功地接收到 UE重新发送的数据块, 则网络侧 继续发送接收失败消息给 UE,然后 UE可以在下一个 HARQ RTT中用于发 送数据块的 TTI内重新发送该数据块给网络侧。
( C ) : UE丟弃该数据块, 并等待到下一个 HARQ RTT中的用于发送 数据块的 TTI时从緩冲区中剩下的数据块中取出一个数据块, 并返回执行 步骤 303;
其中,如果某个数据块的重传次数超过最大重传次数,则 UE直接丟弃 该数据块, 并继续发送剩下的数据块。
步骤 308: UE在 HARQ RTT中的用于发送数据块的 TTI内,根据接收 的调度信息发送该数据块和用于指示该数据块为最后一个数据块的指示信 息给网络侧;
其中, 网络侧接收 UE发送的数据块和指示信息,根据接收的指示信息 确定出接收的数据块为 UE需要发送的最后一个数据块,并且判断该数据块 是否正确, 如果不正确, 则发送给 UE的反馈信息为接收失败消息, 并增加 该数据块的重传次数,如果正确,则发送给 UE的反馈信息为接收成功消息。
步骤 309: UE接收网络侧发送的反馈消息, 如果该反馈消息为接收成 功消息, 则释放网络侧分配的资源, 结束操作; 如果该反馈消息为接收失 败消息且该数据块的重传次数小于最大重传次数, 则执行步骤 310;
步骤 310: UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ 时,根据接收的调度信息重新发送取出的该数据块给网络侧,执行步骤 309。
其中, 在本实施例中, UE判断该数据块的重传次数是否小于最大重传 次数, 如果是, 则在下一个 HARQ RTT中的用于发送数据块的 TTI时重新 发送该数据块给网络侧, 并增加该数据块的重传次数, 返回执行步骤 309; 如果否, 丟弃该数据块, 停止继续重新发送该数据块, 释放网络侧分配的 资源, 结束操作。
其中, 网络侧接收 UE重新发送的数据块,判断接收的数据块有没有出 错, 如果没有出错, 则发送接收成功消息给 UE, 如果出错, 则判断该数据 块的重传次数是否小于最大重传次数, 如果否, 则丟弃该数据块, 停止继 续接收 UE重新发送该数据块, 发送接收失败消息给 UE, 并结束操作, 如 果是, 则发送接收失败消息给 UE, 并增加该数据块的重传次数。
在本发明实施例中, 确定在 HARQ RTT中的某个 TTI发送数据块时, 在 HARQ RTT中确定的 TTI内发送数据块, 如果没有成功发送该数据块, 则在下一个 HARQ RTT中相同的 TTI内重新发送数据块, 如果成功发送该 数据块, 则在下一个 HARQ RTT中相同的 TTI内发送其他的数据块。 如此 当发送完某个数据块后, 不需要预留 TTI用于重新发送该数据块, 且没有 成功发送该数据块, 则在下一个 HARQ RTT中优先重新发送该数据块, 从 而充分使用时隙资源, 减少资源浪费。 对于上述一种发送数据块方法的另一个实施例提供的发送数据块的方 动通信系统) 系统, 参见图 5, 该方法包括:
步骤 401: UE将需要发送的数据块緩存在緩冲区中,选择一套 preamble 竟争资源, 发送选择的一套 preamble竟争资源给网络侧;
其中, 每个 UE内事先配置多套 preamble竟争资源, UE当需要发送数 据块给网络侧时, UE选择一套 preamble竟争资源, 并通过选择的 preamble 竟争资源向网络侧请求调度; 网络侧当接收到 preamble竟争资源后为 UE 分配调度信息, 通过 AICH信道发送分配的调度信息给 UE。
其中, 调度信息包括 E-DCH ( Enhanced Dedicated Channel , 增强专用 信道)资源、用于发送数据块的 ΤΤΙ和 TA ( Timing Advance, 时间提前量), 相应地, 网络侧为 UE 分配调度信息的操作可以具体为: 根据接收的 preamble竟争资源分配 E-DCH资源,根据接收的 preamble竟争资源计算出 TA, 确定用于发送数据块的 ΤΉ。
步骤 402: UE通过 AICH信道接收网络侧发送的调度信息, 该调度信 息包括 E-DCH资源、 用于发送数据块的 ΤΤΙ和 ΤΑ;
步骤 403: UE发送确认消息给网络侧,且该确认消息携带自身的标识; 其中, UE 的标识可以为 E-RNTI ( E-DCH Radio Network Temporary Identifier E-DCH, 无线网络临时标识)。
其中, 可能存在多个 UE同时选择相同的 preamble竟争资源并发送相 同的 preamble竟争资源给网络侧, 如此使得网络侧根据接收的 preamble竟 争资源分配相同的 E-DCH 资源并发送给多个 UE, 使得多个 UE 竟争该 E-DCH资源产生冲突; 每个 UE接收到网络侧发送的 EDCH资源后, 都会 发送确认消息给网络侧。 其中,如果网络侧只接收到一个 UE发送的确认消息,则表明没有多个 UE同时发送相同的 preamble竟争资源请求调度, 网络通过 AGCH发送该 确认肖息携带 UE的标识;如果网络侧同时接收到多个 UE发送的确认消息, 则表明有多个 UE同时发送相同的 preambke竟争资源请求调度, 网络侧选 择一个确认消息, 通过 AGCH发送选择的确认消息携带 UE的标识。
步骤 403: UE通过 AGCH接收网络侧发送给自身的标识, 从緩冲区中 取出一个数据块;
步骤 404: UE判断取出的数据块是否为最后一个需要发送的数据块, 如果否, 则执行步骤 405, 如果是, 则执行步骤 411 ;
步骤 405: UE在 HARQ RTT中用于发送数据块的 ΤΉ内根据接收的调 度信息发送取出的一个数据块给网络侧;
其中, 网络侧接收 UE发送的数据块后发送反馈消息给 UE, 如果成功 接收到 UE发送的数据块,则网络侧发送给 UE的反馈消息为接收成功消息, 该接收成功消息用于向 UE说明已成功接收 UE发送的数据块;如果未成功 接收到 UE发送的数据块,则网络侧发送给 UE的反馈消息为接收失败消息, 该接收失败消息用于向 UE说明没有成功接收 UE发送的数据块。
步骤 406: UE接收网络侧发送的反馈消息, 如果接收的反馈消息为接 收成功消息, 则执行步骤 407, 如果接收的反馈消息为接收失败消息, 则执 行步骤 408;
步骤 407: UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ 时, 从緩冲区中剩下的数据块中取出一个数据块, 返回步骤 404;
步骤 408: UE等待到下一个 HARQ RTT中的用于发送数据块的 ΤΉ 时, 重新发送取出的该数据块, 执行步骤 406;
其中, UE可以重新发送该数据块, 直到成功地将该数据块发送给网络 侧, 才从緩冲区中取出一新的数据块来发送给网络侧。
其中,在本实施例中,也可以设置 UE允许重新发送该数据块的次数不 超过最大重传次数, 相应地, 本步骤可以具体包括如下(a ) - ( c )的步骤:
( a ) : UE判断该数据块的重传次数是否小于最大重传次数, 如果是, 则执行步骤(b ), 如果否, 则执行步骤(c );
其中, 每个数据块的重传次数的初值可以为 0或 1等。
( b ) : UE等待到下一个 HARQ RTT的用于发送数据块的 TTI时, 根 据接收的调度信息重新发送取出的该数据块给网络侧, 并增加该数据块的 重传次数, 返回步骤 406;
其中, 增加该数据块的重传次数可以具体为: 将该数据块的重传次数 增加 1或 2等值。
其中,如果网络侧没有成功地接收到 UE重新发送的数据块, 则网络侧 继续发送接收失败消息给 UE,然后 UE可以在下一个 HARQ RTT中用于发 送数据块的 TTI内重新发送该数据块给网络侧。
( c ) : UE丟弃该数据块, 并等待到下一个 HARQ RTT中的用于发送 数据块的 TTI时从緩冲区中剩下的数据块中取出一个数据块, 并返回执行 步骤 404;
其中,如果某个数据块的重传次数超过最大重传次数,则 UE直接丟弃 该数据块, 并继续发送剩下的数据块。
步骤 409: UE在 HARQ RTT中的用于发送数据块的 ΤΉ内,根据接收 的调度信息发送该数据块和用于指示该数据块为最后一个数据块的指示信 息给网络侧;
其中, 网络侧接收 UE发送的数据块和指示信息,根据接收的指示信息 确定出接收的数据块为 UE需要发送的最后一个数据块,并且判断该数据块 是否正确, 如果不正确, 则发送给 UE的反馈信息为接收失败消息, 并增加 该数据块的重传次数,如果正确,则发送给 UE的反馈信息为接收成功消息。
步骤 410: UE接收网络侧发送的反馈消息, 如果该反馈消息为接收成 功消息, 则释放网络侧分配的资源, 结束操作; 如果为接收失败消息, 则 执行步骤 411 ;
步骤 411 : UE判断该数据块的重传次数是否小于最大重传次数, 如果 是, 则在下一个 HARQ RTT中的用于发送数据块的 TTI时重新发送该数据 块给网络侧, 并增加该数据块的重传次数, 执行步骤 410。
其中, 在本实施例中, UE判断该数据块的重传次数是否小于最大重 传次数, 如果是, 则在下一个 HARQ RTT中的用于发送数据块的 TTI时重 新发送该数据块给网络侧,并增加该数据块的重传次数,返回执行步骤 410; 如果否, 丟弃该数据块, 停止继续重新发送该数据块, 释放网络侧分配的 资源, 结束操作。
其中, 网络侧接收 UE重新发送的数据块,判断接收的数据块有没有出 错, 如果没有出错, 则发送接收成功消息给 UE, 如果出错, 则判断该数据 块的重传次数是否小于最大重传次数, 如果否, 则丟弃该数据块, 停止继 续接收 UE重新发送该数据块, 发送接收失败消息给 UE, 并结束操作, 如 果是, 则发送接收失败消息给 UE, 并增加该数据块的重传次数。
在本发明实施例中, 确定在 HARQ RTT中的某个 TTI发送数据块时, 在 HARQ RTT中确定的 TTI内发送数据块, 如果没有成功发送该数据块, 则在下一个 HARQ RTT中相同的 TTI内重新发送数据块, 如果成功发送该 数据块, 则在下一个 HARQ RTT中相同的 TTI内发送其他的数据块。 如此 当发送完某个数据块后, 不需要预留 TTI用于重新发送该数据块, 且没有 成功发送该数据块, 则在下一个 HARQ RTT中优先重新发送该数据块, 从 而充分使用时隙资源, 减少资源浪费。 如图 6所示, 本发明提供了一种发送数据块设备的一个实施例, 包括: 第一发送模块 501 , 用于从緩冲区中取出数据块, 如果该数据块不是最 后一个需要发送的数据块, 则在 HARQ RTT中用于发送数据块的 ΤΉ时, 根据调度信息发送该数据块给网络侧; 第一重传模块 502,用于如果第一发送模块 501没有成功发送该数据块, 则在该 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 ΤΉ时, 根据调度信息重新发送该数据块给网络侧;
第二发送模块 503 , 用于如果第一发送模块 501成功发送该数据块, 则 从緩冲区中取出数据块, 如果取出的数据块不是最后一个需要发送的数据 块,则在该 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 ΤΉ 时, 根据调度信息发送取出的数据块给网络侧。
其中, 第一重传模块 502, 具体用于如果该数据块的重传次数小于最大 重传次数,则在该 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块 的 TTI时, 根据调度信息重新发送该数据块给网络侧, 增加该数据块的重 传次数。
进一步地, 该设备还包括:
第一丟弃模块, 用于如果第一重传模块 502重传该数据块的次数等于 或大于最大重传次数, 则丟弃该数据块, 从所述緩冲区中取出数据块, 如 果该数据块不是最后一个需要发送的数据块, 则在该 HARQ RTT相邻的下 一个 HARQ RTT中用于发送数据块的 TTI时, 根据调度信息发送该数据块 给网络侧。
进一步地, 该设备还包括:
第三发送模块, 用于如果第一发送模块 501 发送的该数据块是最后一 个需要发送的数据块, 则在该 HARQ RTT中用于发送数据块的 TTI时, 根 据调度信息发送该数据块和用于指示所述数据块为最后一个需要发送的数 据块的指示信息给网络侧。
进一步地, 该设备还包括:
第二重传模块, 用于当第三发送模块成功发送该数据块, 则释放网络 侧分配的资源; 当第三发送模块没有成功发送该数据块, 则如果该数据块 的重传次数小于最大重传次数, 则在 HARQ RTT相邻的下一个 HARQ RTT 中用于发送数据块的 TTI时, 重新发送该数据块并增加该数据块的重传次 数。
进一步地, 该设备还包括:
第二丟弃模块, 用于如果第二重传模块 502重传该数据块的次数等于 或大于最大重传次数值, 则丟弃该数据块并释放网络侧分配的资源。
进一步地, 该设备还包括:
确定模块,用于接收网络侧发送的调度信息,根据接收调度信息的 ΤΉ 确定在 HARQ RTT中用于发送数据块的 ΤΉ。
在本发明实施例中, 确定在 HARQ RTT中的某个 ΤΤΙ发送数据块时, 在 HARQ RTT中确定的 TTI内发送数据块, 如果没有成功发送该数据块, 则在下一个 HARQ RTT中相同的 TTI内重新发送数据块, 如果成功发送该 数据块, 则在下一个 HARQ RTT中相同的 TTI内发送其他的数据块。 如此 当发送完某个数据块后, 不需要预留 TTI用于重新发送该数据块, 且没有 成功发送该数据块, 则在下一个 HARQ RTT中优先重新发送该数据块, 从 而充分使用时隙资源, 减少资源浪费。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以 通过硬件来完成, 也可以通过程序来指令相关的硬件完成, 所述的程序可 以存储于一种计算机可读存储介质中, 上述提到的存储介质可以是只读存 储器, 磁盘或光盘等。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发 明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在 本发明的保护范围之内。

Claims

权利要求
1、 一种发送数据块的方法, 其特征在于, 所述方法包括:
从緩冲区中取出数据块, 如果所述数据块不是最后一个需要发送的数 据块, 则在混合自动重传请求往返时延 HARQ RTT中用于发送数据块的传 输时间间隔 TTI时, 根据调度信息发送所述数据块给网络侧;
如果没有成功发送所述数据块, 则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息重新发送所述 数据块给网络侧;
如果成功发送所述数据块, 则从所述緩冲区中取出数据块, 如果所述 数据块不是最后一个需要发送的数据块, 则在所述 HARQ RTT相邻的下一 个 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息发送所述数 据块给网络侧。
2、 如权利要求 1所述的方法, 其特征在于, 所述在 HARQ RTT相邻 的下一个 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息重新 发送所述数据块给网络侧, 包括:
如果所述数据块的重传次数小于最大重传次数值, 则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 ΤΉ时, 根据所述调度 信息重新发送所述数据块给网络侧, 增加所述数据块的重传次数。
3、 如权利要求 2所述的方法, 其特征在于, 所述方法还包括: 如果所述数据块的重传次数等于或大于最大重传次数, 则丟弃所述数 据块, 从所述緩冲区中取出数据块, 如果所述数据块不是最后一个需要发 送的数据块,则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数 据块的 TTI时, 根据所述调度信息发送所述数据块给网络侧。
4、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括: 如果所述数据块是最后一个需要发送的数据块, 则在所述 HARQ RTT 中用于发送数据块的 TTI时, 根据所述调度信息发送所述数据块和用于指 示所述数据块为最后一个需要发送的数据块的指示信息给网络侧。
5、 如权利要求 4所述的方法, 其特征在于, 所述方法还包括: 当成功发送所述数据块, 则释放所述网络侧分配的资源; 当没有成功 发送所述数据块, 则如果所述数据块的重传次数小于最大重传次数, 则在 所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 ΤΉ时 ,重 新发送所述数据块并增加所述数据块的重传次数。
6、 如权利要求 5所述的方法, 其特征在于, 所述方法还包括: 如果所述数据块的重传次数等于或大于最大重传次数, 则丟弃所述数 据块并释放所述网络侧分配的资源。
7、 如权利要求 1-6任一项权利要求所述的方法, 其特征在于, 所述在
TTI时, 根据调度信息发送所述数据块给网络侧之前, 还包括:
接收所述网络侧发送的调度信息, 根据接收所述调度信息的 TTI确定 在所述 HARQ RTT中用于发送数据块的 ΤΉ。
8、 一种发送数据块的设备, 其特征在于, 所述设备包括:
第一发送模块, 用于从緩冲区中取出数据块, 如果所述数据块不是最 后一个需要发送的数据块, 则在混合自动重传请求往返时延 HARQ RTT中 用于发送数据块的传输时间间隔 TTI时, 根据调度信息发送所述数据块给 网络侧;
第一重传模块, 用于如果所述第一发送模块没有成功发送所述数据块, 则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 ΤΉ 时, 根据所述调度信息重新发送所述数据块给网络侧;
第二发送模块, 用于如果所述第一发送模块成功发送所述数据块, 则 从所述緩冲区中取出数据块, 如果所述数据块不是最后一个需要发送的数 据块,则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息发送所述数据块给网络侧。
9、 如权利要求 8所述的设备, 其特征在于,
所述第一重传模块, 具体用于如果所述数据块的重传次数小于最大重 传次数值,则在所述 HARQ RTT相邻的下一个 HARQ RTT中用于发送数据 块的 TTI时, 根据所述调度信息重新发送所述数据块给网络侧, 增加所述 数据块的重传次数。
10、 如权利要求 9所述的设备, 其特征在于, 所述设备还包括: 第一丟弃模块, 用于如果所述第一重传模块重传所述数据块的次数等 于或大于最大重传次数, 则丟弃所述数据块, 从所述緩冲区中取出数据块, 如果所述数据块不是最后一个需要发送的数据块, 则在所述 HARQ RTT相 邻的下一个 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息发 送所述数据块给网络侧。
11、 如权利要求 8所述的设备, 其特征在于, 所述设备还包括: 第三发送模块, 用于如果所述第一发送模块发送的所述数据块是最后 一个需要发送的数据块,则在所述 HARQ RTT中用于发送数据块的 TTI时, 根据所述调度信息发送所述数据块和用于指示所述数据块为最后一个需要 发送的数据块的指示信息给网络侧。
12、 如权利要求 11所述的设备, 其特征在于, 所述设备还包括: 第二重传模块, 用于当所述第三发送模块成功发送所述数据块, 则释 放所述网络侧分配的资源; 当所述第三发送模块没有成功发送所述数据块, 则如果所述数据块的重传次数小于最大重传次数, 则在所述 HARQ RTT相 邻的下一个 HARQ RTT中用于发送数据块的 TTI时, 重新发送所述数据块 并增加所述数据块的重传次数。
13、 如权利要求 12所述的设备, 其特征在于, 所述设备还包括: 第二丟弃模块, 用于如果所述第二重传模块重传所述数据块的次数等
14、 如权利要求 8-13任一项权利要求所述的设备, 其特征在于, 所述 设备还包括:
确定模块, 用于接收所述网络侧发送的调度信息, 根据接收所述调度 信息的 TTI确定在所述 HARQ RTT中用于发送数据块的 ΤΉ。
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