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Data transmission method, device and system

A data transmission method and data technology, applied in the field of wireless communication, can solve problems such as difficulty and poor channel quality, and achieve the effect of improving reliability

Inactive Publication Date: 2018-11-13
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Based on the requirement of reliability, it is currently considered to support multiple repeated transmissions of the same URLLC service data. However, due to the poor channel quality of some user equipment (User Equipment, UE), such as the UE at the edge of the cell, its signal-to-noise ratio (SIGNAL-NOISE RATIO, SNR) may be -5dB. Under this signal-to-noise ratio, to achieve 99.999% reliability, it may take 8 to 16 transmissions after evaluation, assuming that URLLC data transmission uses a scheduling unit with a time length of only 0.125ms , and can only transmit up to 8 times within 1ms, that is, it is difficult to achieve 99.999% reliability requirements within 1ms

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  • Data transmission method, device and system

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0042] The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0043] The technology described in the present invention can be applied to the Long Term Evolution (LTE for short) system, or other wireless communication systems using various wireless access technologies, such as code division multiple access, frequ...

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Abstract

The invention relates to the technical field of wireless communication, and particularly relates to a data transmission method, a device and a system. The invention provides the data transmission method, user equipment UE receive data from a first access network device to which a service cell belongs; the UE send a decoding result of the data to the first access network device, and a second accessnetwork device to which a collaborative cell belongs; if the decoding result is a negative acknowledgement signaling NACK, the UE receive the data retransmitted from the first access network device,and receive the data from the second access network device. The data transmission method, the device and the system provided by the invention aim at helping the first access network device to transmitor retransmit the data to the UE through the second access network device so as to improve reliability of data transmission under a low-delay scene.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a data transmission method, device and system in a wireless communication system. Background technique [0002] Mobile communication technology has profoundly changed people's lives, but people's pursuit of higher performance mobile communication technology has never stopped. In order to cope with the explosive growth of mobile data traffic in the future, massive mobile communication device connections, and various new services and application scenarios emerging, the fifth generation (5G) mobile communication system has emerged as the times require. The 5G mobile communication system needs to support enhanced mobile broadband (eMBB) services, ultra reliable and low latency communications (URLLC) services, and massive machine type communications (mMTC) services . [0003] Among them, the URLLC service has extremely high requirements on delay. Without...

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Application Information

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IPC IPC(8): H04L1/16H04L5/00H04L1/00
CPCH04L1/0045H04L1/1657H04L5/0055H04L1/188H04L1/1893H04L5/001H04L5/0035H04L5/0044H04L5/0053H04L5/0091H04L2001/0097H04B7/024H04L1/1864H04L1/1896
Inventor 彭金磷任海豹董朋朋张鹏
Owner HUAWEI TECH CO LTD
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