Downlink data transmission, transmission processing method and device

A technology of downlink data and transmission method, applied in the field of communication, can solve problems such as no solutions, and achieve the effect of ensuring normal communication

Inactive Publication Date: 2014-10-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] For the above-mentioned problems in related tec

Method used

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  • Downlink data transmission, transmission processing method and device
  • Downlink data transmission, transmission processing method and device
  • Downlink data transmission, transmission processing method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0067] The downlink data transmission method in this embodiment is applied to a base station. figure 1 It is a flowchart of a method for transmitting downlink data according to Embodiment 1 of the present invention. like figure 1 As shown, the method includes:

[0068] Step S102, acquiring trigger information for triggering the adoption of a specified transmission mode;

[0069] Step S104, according to the trigger information, transmit the downlink data in a transmission manner corresponding to the trigger information.

[0070] Through the above processing steps, since the corresponding transmission mode is selected according to the acquired trigger information, the transmission mode of downlink data can be flexibly selected according to different trigger information, especially when the communication environment indicated by the above trigger information is a low coverage environment, It can ensure that the terminal correctly receives the data sent by the base station, the...

Embodiment 2

[0101] This embodiment is described on the terminal side. Figure 4 It is a flowchart of a downlink data transmission processing method according to Embodiment 2 of the present invention. like Figure 4 As shown, the method includes:

[0102] Step S402, acquiring trigger information for triggering the adoption of a specified transmission mode;

[0103] Step S404, receiving the above-mentioned downlink data according to the transmission mode corresponding to the above-mentioned trigger information.

[0104] In this embodiment, the above trigger information includes at least one of the following: the number of subframes used to transmit downlink data, the type of terminal used to receive downlink data, and transmission indication signaling received.

[0105] So far, the above implementation process can be expressed as the following implementation methods: Figure 5 It is another flow chart of the downlink data transmission method according to Embodiment 2 of the present inve...

Embodiment 3

[0130] In this embodiment, the method provided by the present invention is described in detail for downlink transmission in an FDD (Frequency Division Duplexing, frequency division duplexing) or TDD (Time Division Duplexing, time division duplexing) system.

[0131] The base station receives the PRACH preamble sent by the terminal as a type with coverage enhancement requirements, obtains that the number of subframes for transmission data information is greater than 1, and at the same time learns that the terminal type is the predefined type 1. To support the coverage enhancement technology terminal, select the following transmission In this case, the data information is the service data information carried on the PDSCH channel. Otherwise, select to send data based on the modulation mode indicated by the downlink control information, and demodulate based on the CRS pilot. The specific processing steps on the base station side are as follows: figure 2 shown.

[0132] The base...

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Abstract

The invention provides a downlink data transmission, a transmission processing method and a device. The transmission method comprises steps of obtaining triggering information for triggering to adopt a designated traditional mode, and transmitting downlink data according to the triggering information adopting the transmission mode corresponding to the triggering information. By adopting the technical method provided by the invention, the technical problems that the reliability of data transmission in a communication system having coverage requirement is not high can be solved so as to guarantee that the terminal device under the environment in which the coverage is low can receive the data information of the base station side and guarantee the normal communication of the terminal device in such environment.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a method and device for transmission and transmission processing of downlink data. Background technique [0002] Machine Type Communication (MTC for short) user terminal (MTC User Equipment, MTC terminal for short), also known as machine to machine (Machine to Machine, M2M for short) user communication equipment, is the main application form of the Internet of Things at this stage . In recent years, due to the high spectral efficiency of Long Term Evolution / Long Term Evolution Advance (LTE / LTE-A), more and more mobile operators choose LTE / LTE-A as the broadband wireless The evolution direction of the communication system. MTC various data services based on LTE / LTE-A will also be more attractive. [0003] The downlink transmission data of the existing LTE / LTE-A system is mainly carried by a Physical Downlink Share Channel (Physical Downlink Share Channel, PDSCH for sh...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L5/00H04W88/08
CPCH04L5/00H04W72/04
Inventor 石靖戴博夏树强李新彩方惠英
Owner ZTE CORP
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