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Transmission method and apparatus of physical downlink control channel

A technology of physical downlink control and transmission method, which is applied in the field of transmission method and device of physical downlink control channel, and can solve the problems of wasting terminal power consumption and the like

Active Publication Date: 2018-10-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, every time the terminal performs blind detection of the PDCCH, it needs to receive a complete subframe before determining whether the corresponding MPDCCH is detected. In this way, the terminal needs to be in the open state all the time, which wastes the power consumption of the terminal.

Method used

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  • Transmission method and apparatus of physical downlink control channel
  • Transmission method and apparatus of physical downlink control channel
  • Transmission method and apparatus of physical downlink control channel

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0028] This embodiment provides a PDCCH transmission method, which is applied to a communication system, such as an MTC system, an NB-IOT system, etc., and the system includes at least: a base station and a terminal.

[0029] figure 1 It is a schematic flow chart of the PDCCH transmission method in the embodiment of the present invention Figure 1 , see figure 1 As shown, the method includes the following:

[0030] S101: The base station sends a first PDCCH carrying first downlink control information (Downlink Control Information, DCI);

[0031] Here, the first DCI may include one or more of the following information: a first indication for indicating whether to detect the second PDCCH, transmission information of the second PDCCH, and a transmission mode of the second PDCCH.

[0032] In the embodiment of the present invention, the value of the above-mentioned first indication may be the first value or the second value; when the first indication takes the first value, the f...

Embodiment 2

[0090] Based on the foregoing embodiments, this embodiment provides a method for transmitting a PDCCH, which is applied to the terminal in one or more of the foregoing embodiments.

[0091] figure 2 It is a schematic flow chart of the PDCCH transmission method in the embodiment of the present invention Figure II , see figure 2 As shown, the method includes the following:

[0092] S201: The terminal detects the first PDCCH, and obtains the first DCI carried on the first PDCCH;

[0093] Wherein, the first DCI includes one or more of the following information: the first indication, the transmission information of the second PDCCH, and the transmission mode of the second PDCCH;

[0094] S202: The terminal determines to detect the second PDCCH according to the first DCI.

[0095] In the embodiment of the present invention, the value of the first indication is the first value or the second value; when the first indication takes the first value, the first indication indicates ...

Embodiment 3

[0111] Based on the foregoing embodiments, this embodiment provides a method for transmitting a PDCCH, which is applied to the base station in one or more of the foregoing embodiments.

[0112] image 3 It is a schematic flow chart of the PDCCH transmission method in the embodiment of the present invention Figure three , see image 3 As shown, the method includes the following:

[0113] S301: The base station sends the first PDCCH carrying the first DCI;

[0114] Wherein, the first DCI includes a combination of one or more of the following information: the first indication, the transmission information of the second PDCCH, and the transmission mode of the second PDCCH;

[0115] S302: The base station determines to send the second PDCCH according to the first DCI.

[0116] In the embodiment of the present invention, the value of the first indication is the first value or the second value; when the first indication takes the first value, the first indication indicates that ...

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Abstract

The embodiment of the invention discloses a transmission method of a physical downlink control channel. The method includes steps: a terminal detects a first physical downlink control channel (PDCCH)and obtains first downlink control information (DCI) carried by the first PDCCH, wherein the first DCI includes one or more of following information: transmission information for a first indication and a second PDCCH and a transmission mode of the second PDCCH; and the terminal determines detection of the second PDCCH according to the first DCI. The embodiment of the invention also discloses a transmission apparatus of the physical downlink control channel.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for transmitting a physical downlink control channel. Background technique [0002] In recent years, due to the high spectral efficiency of Long Term Evolution (LTE) / LTE-A (LTE-Advanced), more and more mobile operators choose LTE / LTE-A as the evolution direction of future broadband wireless communication systems . Multiple types of data services based on LTE / LTE-A Machine Type Communications (Machine Type Communications, MTC) will also become more attractive. [0003] Among several technologies applicable to the cellular Internet of Things (Comb-Internet Of Things, C-IOT) disclosed in the prior art, the narrow-band Internet of Things (Narrow Bang-Internet Of Things, NB-IOT) technology is the most eye-catching. The NB-IOT system focuses on low-complexity and low-throughput radio access technologies. The main research goals include: improved indoor coverage, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W72/12H04L5/00
CPCH04L5/0053H04W52/0225H04L5/0064H04W72/23Y02D30/70
Inventor 杨维维戴博刘锟陈宪明方惠英
Owner ZTE CORP
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