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A data transmission method and base station

A data transmission method and base station technology, applied in the field of data transmission method and base station based on scheduling-free non-orthogonal multiple access technology, can solve problems affecting the correctness of demodulation and decoding, shorten uplink transmission time, and eliminate control information Effects of cost and efficient use

Active Publication Date: 2021-07-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a design brings challenges to the receiver. The receiver needs to perform blind detection without a reference signal. The performance of blind detection will directly affect the correctness of the demodulation and decoding of the receiver.

Method used

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  • A data transmission method and base station
  • A data transmission method and base station
  • A data transmission method and base station

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Embodiment Construction

[0068] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0069] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations.

[0070] In the embodiments of the present invention, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design solution described a...

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Abstract

Embodiments of the present invention provide a data transmission method and a base station, which relate to the technical field of wireless communication, and are used to solve the problem that the base station acquires uplink data sent by the terminal without scheduling, and at the same time eliminates the problem of information interference caused by user non-orthogonality. The method includes: performing antenna polarization in different directions on the received signal to obtain K-channel signals; performing blind detection on the K-channel signals respectively to obtain K×L equalized data streams; The data streams are selected and combined to obtain M data streams that need to be demodulated and decoded; the M data streams are processed to obtain uplink data sent by the terminal. The embodiments of the present invention can be applied in the narrowband Internet of Things scenario, so that uplink services are completely free from scheduling, and spectrum resources are efficiently utilized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a data transmission method and a base station based on a scheduling-free non-orthogonal multiple access technology. Background technique [0002] Narrow Band Internet of Things (NB-IOT) is an IoT communication system based on a cellular network with wide coverage, large connections, low speed, low cost, low power consumption, and an excellent architecture. It only consumes 180KHz bandwidth , can be directly deployed on GSM (Global System for Mobile Communication, Global System for Mobile Communications), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) or LTE (Long Term Evolution, Long Term Evolution) network to reduce deployment costs and achieve smooth upgrades . As one of the most important requirements of NB-IoT, large connection is characterized by occupying as little bandwidth resources as possible and supporting more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L25/02H04W72/02H04B1/69
CPCH04B1/69H04L1/0038H04L1/0045H04L25/0238H04W72/02
Inventor 余文琦
Owner ZTE CORP