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Data transmission method and equipment

A data transmission method and data technology, applied in the field of communication, can solve problems such as inapplicability

Active Publication Date: 2021-01-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the NoMA technology is different from the existing OMA technology, so the modulation and coding scheme (MCS) for OMA data transmission is not applicable. Therefore, it is urgent to provide a data transmission method suitable for the NoMA technology.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment approach 4

[0202] For the uplink grant-free transmission mode (Grant-free) system, the MCS table corresponding to the number of any active terminal equipment in the system is the same, and the correspondence relationship between the overload indication and the spectral efficiency SE is specifically that any SE corresponds to the same overload indication. For example, the value of the overload indication is 1 / 12 or 1 / 8 or 1 / 6 or 1 / 4 or 1 / 3 or 1 / 2 or 2 / 3 or 5 / 6 or 1 or 3 / 4.

[0203] Example 6:

[0204] Table 18 Number of any active end-devices

[0205]

[0206] Example 7:

[0207] Table 19 Number of any active end-devices

[0208]

[0209] In this embodiment, in Table 18 shown in Example 6, the value of the overload indication OI is 1, and in Table 19 shown in Example 7, the value of the overload indication OI is 1 / 2. In the specific implementation process, the value of the overload indicator OI can also be other values, and the actual MCS table can be part or all of the above-men...

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Abstract

An embodiment of the present application provides a data transmission method and device, the method includes: the sending device obtains the modulation and coding strategy in the MCS table according to the modulation and coding strategy MCS index, and the modulation and coding strategy includes: modulation order, code rate and overload indication , wherein the overload indication is used to indicate the overload information used by the sending device and the receiving device for data transmission; the sending device codes and modulates the data according to the modulation and coding strategy to obtain coded and modulated data; the The sending device sends the coded and modulated data to the receiving device.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method and device. Background technique [0002] Compared with Orthogonal Multiple Access (OMA) technology, Non-orthogonal Multiple Access (NoMA) technology can effectively improve network capacity and is the fifth generation (5G) mobile communication technology. One of the important alternatives to the standard. [0003] The principle of the NoMA technology is mainly to superimpose M data streams of one or more users onto N subcarriers for transmission, where M and N are integers greater than 1. When the value of M is greater than N, there is a single wireless resource (such as a block divided by frequency and time) allocated to multiple users, this type of technology can effectively improve the network capacity, mainly reflected in the system can access user The number increases and the spectral efficiency is impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0003H04L1/0016H04L1/00
Inventor 戴胜辰王坚张华滋李榕王俊马江镭
Owner HUAWEI TECH CO LTD