A method and device for data transmission

A technology of transmission block and coding block, which is applied in the field of data transmission, can solve the problems of system efficiency reduction, retransmission, correct reception, etc., and achieve the effect of improving efficiency, solving efficient and flexible multiplexing, and low delay requirements

Active Publication Date: 2022-04-05
HUAWEI TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the entire TB is retransmitted, the UE cannot correctly receive the TB through HARQ combining
The UE cannot know which CB was punctured by URLLC during the last transmission, so when the UE feeds back NACK, the UE's own HARQ buffer may store URLLC services instead of its own CB, so it is compared with the retransmitted CB HARQ combining not only fails to obtain the HARQ combining gain, but also causes the CB to fail to receive correctly again, which will eventually trigger RLC layer retransmission, resulting in a significant drop in system efficiency

Method used

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  • A method and device for data transmission
  • A method and device for data transmission
  • A method and device for data transmission

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Embodiment Construction

[0178] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. 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.

[0179] figure 1 A communication system 100 to which an embodiment of the present invention is applied is shown. The communication system 100 may include at least one radio access network device 110 and multiple terminal devices 120 located within the coverage of the radio access network device 110 . figure 1 One wireless access network device and two terminal devices are exemplarily shown. Optionally, the communication system 100 may include multiple wireless access network devices an...

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Abstract

The present application provides embodiments of a data transmission method and device. An embodiment of the data transmission method includes: the terminal device receives the control information sent by the wireless access network device and the indication information of the affected coding block, and the control information is used by the wireless access network device to schedule at least A transmission block, each transmission block in the at least one transmission block includes at least one coding block, and the affected coding block is at least one coding block in the at least one transmission block; the terminal device according to the The indication information of the affected coding block determines the affected coding block; the terminal device receives the at least one transmission block according to the control information and the determined affected coding block.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a data transmission method and device. Background technique [0002] Service transmission in an LTE (Long Term Evolution, long term evolution) system is based on base station scheduling, and the basic time unit of scheduling is a subframe. The duration of a subframe is generally 1 ms, and a subframe generally includes two time slots, and a time slot generally includes 7 time domain symbols, and the time domain symbols refer to OFDM or SC-FDMA symbols in the time domain dimension. The specific scheduling process includes that the base station sends a control channel (such as PDCCH), the UE detects the control channel in the subframe, and receives the downlink data channel or sends the uplink data channel according to the scheduling information carried in the detected control channel. The control channel may carry scheduling information of a downlink data channel (such as PDSCH...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/18H04W72/12
CPCH04L1/0006H04L1/0009H04L1/0023H04L1/1806H04L1/1812H04W72/1221H04W72/20H04L1/00H04W72/12H04L1/1887H04L1/1896H04L1/1835H04L1/08H04L1/1671
Inventor 官磊马莎
Owner HUAWEI TECH CO LTD
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