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Method and device for retransmitting transmission blocks and terminal device

A technology of terminal equipment and transport block, applied in the field of communication, can solve the problem of not being able to know the first transmission block of the retransmission transmission block, etc.

Inactive Publication Date: 2013-08-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Considering the problem that the first transmission block corresponding to the retransmission transport block cannot be known in the VoIP service in the related art, the present invention is proposed. Therefore, the main purpose of the present invention is to provide a transport block retransmission method and device to solve the above problems

Method used

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  • Method and device for retransmitting transmission blocks and terminal device
  • Method and device for retransmitting transmission blocks and terminal device
  • Method and device for retransmitting transmission blocks and terminal device

Examples

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example 1

[0050] Figure 6 It is a schematic diagram according to Example 1 of the method embodiment of the present invention, as Figure 6 As shown, it can be seen that the retransmission window is set, N=3, the starting point of the retransmission window is the moment of a certain first transmission opportunity, and the length is 20 milliseconds×3=60 milliseconds, within this retransmission window, it is possible to send There are 3 timings for the first transmission block, and the first transmission block sent at each timing when the first transmission block can be sent is represented by {firstTB(1), firstTB(2), firstTB(3)}.

[0051] Using the existing control information in the PDCCH to set the reserved value, you can set 3 reserved values ​​in the MCS of the control information, and these 3 values ​​are represented by {value(1), value(2), value(3) }To represent.

[0052] If the MCS reserved value indication sent by the base station to the terminal in the PDCCH is value(2), the ter...

example 2

[0054] Figure 7 It is a schematic diagram of Example 2 according to the method embodiment of the present invention, as Figure 7 As shown, it can be seen that the retransmission window is set, N=3, the starting point of the retransmission window is a certain first transmission opportunity plus an offset of 2 milliseconds, and the length is 20 milliseconds×3=60 milliseconds, here Within the retransmission window, there are 3 opportunities to send the first transmission block, and the first transmission block sent at each opportunity to send the first transmission block is represented by {firstTB(1), firstTB(2), firstTB(3) }To represent.

[0055] Using the existing control information in the PDCCH to set the reserved value, you can set 3 reserved values ​​in the MCS of the control information, and these 3 values ​​are represented by {value(1), value(2), value(3) }To represent.

[0056] The reserved value of the power control command in the PDCCH is indicated as value (2), so t...

example 3

[0058] Figure 8 It is a schematic diagram according to Example 3 of the method embodiment of the present invention, as Figure 8 As shown, it can be seen that the retransmission window is set, N=3, the starting point of the retransmission window is the moment of a certain first transmission opportunity, and the length is 20 milliseconds×3=60 milliseconds, within this retransmission window, it is possible to send There are 3 timings for the first transmission block, and the first transmission block sent at each opportunity to send the first transmission block is represented by {firstTB(1), firstTB(2), firstTB(3)}, each of which can The timing of sending the first transmission block is to send the first transmission block. Note that the numbers are not sequentially numbered in chronological order. This example shows that the numbers can be scattered as long as the numbers do not overlap with each other.

[0059] Using the existing control information in the PDCCH to set the r...

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Abstract

The invention discloses a method for retransmitting transmission blocks, which comprises the following steps: setting retransmission window, wherein the time length of the retransmission window is N*20 milliseconds, the retransmission window moves forward for 20 milliseconds at intervals of 20 milliseconds, and N represents the number of sending times of first transmission bocks in the retransmission window; numbering each one of the first transmission bocks in the retransmission window, wherein the serial number is used for marking the only corresponding first transmission bock; and when retransmitting the first transmission bocks, carrying the serial numbers of the first transmission bocks retransmitted in the retransmission window in retransmission control information. The invention also provides a device for retransmitting the transmission blocks and user equipment. Through the method, the first transmission blocks corresponding to the retransmission of the transmission blocks in a VoIP service can be determined.

Description

technical field [0001] The present invention relates to the communication field, in particular to a transmission block retransmission method and device, and terminal equipment. Background technique [0002] At present, the Hybrid Automatic Repeat Request (Hybrid ARQ, referred to as HARQ) mechanism uses N-channel parallel process stop and wait to send and retransmit transport blocks (transport blocks, referred to as TB) between layer 1 peer entities, which is used to improve The reliability of a transport block being sent successfully. Wherein, in the downlink direction, each HARQ process is identified by a HARQ process identifier (HARQ Process identifier), wherein the first HARQ transmission and the HARQ retransmission use the same HARQ process and share the same HARQ process identifier. [0003] A Physical Downlink Control Channel (PDCCH for short) is used to carry downlink resource allocation information, wherein the downlink resource allocation information includes a wir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
Inventor 程翔张健
Owner ZTE CORP