Code block retransmission method and device

A technology of retransmission and code block, applied in the field of code block retransmission method and device, can solve problems such as low efficiency, and achieve the effect of high efficiency

Inactive Publication Date: 2017-06-23
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even if a TB is split into multiple code blocks (English: code block, CB) for transmission, the HARQ feedback is still 1 bit, that is, if the TB is divided into multiple CBs for transmission, even if only one CB has an error, the HARQ feedback is NACK, re- The transmission also needs to retransmit the entire TB, which is less efficient

Method used

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  • Code block retransmission method and device
  • Code block retransmission method and device
  • Code block retransmission method and device

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045]The first device in the present invention may specifically be: a base station, of course, in practical applications, it may also be other devices, such as an intelligent terminal. Specifically, the second device may be: an intelligent terminal. Of course, when the first device is an intelligent terminal, the second device may also be a base station. The specific implementation manners of the present invention are not limited to the expression forms of th...

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Abstract

The present invention provides a code block retransmission method. The method comprises the steps of sending a control signaling and a transmission block (TB) from a first device to a second device, wherein the TB comprises at least one code block group (CB Group), and the CB Group is a transmission basic block of the transmission block; receiving a HARQ feedback character corresponding to each code block group of all the plurality of code block groups contained in the TB sent from the second device by the first device; if at least one HARQ feedback character is not successfully received, loading the at least one non-successfully received CB Group in a retransmitted TB by the first device and sending the retransmitted TB to the second device; and sending the control signaling of the retransmitted TB by the first device. The control signaling of the retransmitted TB is used for indicating the second device to identify the at least one CB Group. The technical scheme of the invention has the advantage of high efficiency.

Description

technical field [0001] The invention relates to the fields of electronics and communication, in particular to a code block retransmission method and device. Background technique [0002] In the existing long-term evolution (English: Long Term Evolution, LTE) case, the data transmission is based on the transport block (English: transport block, TB) as the basic unit, and at the same time, there is only one hybrid automatic retransmission request (English: Hybrid Automatic Retransmission Request) for one TB. Repeat request, HARQ) For example: ACK or NACK feedback, that is, 1 bit feedback. Even if a TB is split into multiple code blocks (English: code block, CB) for transmission, the HARQ feedback is still 1 bit, that is, if the TB is divided into multiple CBs for transmission, even if only one CB has an error, the HARQ feedback is NACK, and the The transmission also needs to retransmit the entire TB, which is less efficient. Contents of the invention [0003] The present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16
CPCH04L1/1607H04L1/1809H04L1/1812
Inventor 李明菊张云飞
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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