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Data transmission method, network device and terminal device

A data transmission method and technology of network equipment, applied in the field of data transmission method, network equipment and terminal equipment, can solve problems such as waste of spectrum resources and reduction of utilization efficiency of spectrum resources

Active Publication Date: 2019-02-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the subframe structure described in the prior art, the base station needs to spare time for multiple OFDM symbols to wait for a terminal device to process downlink data, which will cause a serious waste of spectrum resources, thereby reducing the utilization efficiency of spectrum resources

Method used

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  • Data transmission method, network device and terminal device
  • Data transmission method, network device and terminal device
  • Data transmission method, network device and terminal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0284] see Figure 8-b As shown, it is a schematic diagram of the processing delay including UE1 in the nth time slot in the embodiment of the present application. First, illustrate the data transmission process from the side of the cell (or base station, this application does not make a distinction):

[0285] Step 1. The first cell (base station) determines to send downlink data to the first terminal in the nth time slot, and determines to wait to receive the feedback signal of the first terminal for the downlink data in the nth time slot;

[0286] Step 2. The first cell notifies the terminal of the information that the first cell sends downlink data to the first terminal in the nth time slot, and at the same time notifies the terminal of the feedback signal of sending the downlink data to the base station in the nth time slot.

[0287] Further, the first cell may also notify the first terminal which symbol or symbols of the nth time slot to send the downlink data, and which...

Embodiment 2

[0313] see Figure 9 As shown, it is another schematic diagram of the processing delay including UE1 in the nth time slot in the embodiment of the present application. First, an example is given to illustrate the data transmission process from the side of the base station (cell):

[0314] Step 1. The base station determines to send downlink data to the first terminal in the nth time slot, and determines to wait to receive a feedback signal from the first terminal for the downlink data in the nth time slot;

[0315] Step 2: The base station notifies the terminal of the information that the base station sends downlink data to the first terminal in the nth time slot, and at the same time notifies the terminal to send a feedback signal of the downlink data to the base station in the nth time slot.

[0316] There are more than N1 OFDM symbols between the downlink data transmission end time (kth OFDM symbol) and the downlink data feedback signal reception start time (jth OFDM symbo...

Embodiment 3

[0332] see Figure 10 As shown, it is another schematic diagram of the processing delay including UE1 in the nth time slot in the embodiment of the present application. First, illustrate the data transmission process from the base station side:

[0333] Step 1. The base station determines to send downlink data to the first terminal in the nth time slot, and determines to wait to receive a feedback signal from the first terminal for the downlink data in the nth time slot;

[0334] Step 2: The base station notifies the terminal of the information that the base station sends downlink data to the first terminal in the nth time slot, and at the same time notifies the terminal to send a feedback signal of the downlink data to the base station in the nth time slot.

[0335] There are more than N1 OFDM symbols between the downlink data transmission end time (kth OFDM symbol) and the downlink data feedback signal reception start time (jth OFDM symbol), and N1 is greater than or equal ...

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Abstract

The embodiment of the present invention discloses a data transmission method, a network device, and a terminal device. The method comprises the steps that a first network device sends first downlink data to a first terminal device in a first time period in a first time unit; the first network device receives a feedback signal sent by the first terminal device in a second time period in the first time unit, and the first network device determines a third time period from the first time unit, wherein the start point of the third time period is the end time of the first time period, and the end point of the third time period is the start time of the second time period, and at least one of the following time periods may be divided in the third time period: a fourth time period, a fifth time period, and a sixth time period; the first network device can use the time segments of the third time period to perform uplink transmission and downlink transmission, or keep silent, so that the first network device can use the fourth time period or the fifth time period for data transmission. Therefore, the utilization efficiency of spectrum resources is improved.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a data transmission method, network equipment, and terminal equipment. Background technique [0002] In a next-generation wireless communication system, such as a new radio (New Radio, NR) access network, in order to reduce communication delay and improve user experience, various delay reduction methods are proposed. [0003] One way to reduce communication delay is Self-Contained Operation Mode. In this mode, take the transmission of downlink signals as an example. The base station sends downlink data in a certain time slot, and the base station transmits downlink data in this time slot. The feedback signal sent by the terminal is received. The base station may bear downlink control signaling through a physical downlink control channel (Physical Downlink Control Channel, PDCCH), and the base station may bear downlink data through a physical downlink shared ...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L27/26
CPCH04L5/0048H04L5/0053H04L27/261H04L27/26H04L27/26025H04L5/0007H04L5/0094H04L27/2605H04W72/1268H04W80/02H04W72/535
Inventor 冯淑兰
Owner HUAWEI TECH CO LTD