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Downlink control information determination method and a communication device

A technology for control information and information domain, which is applied in the field of downlink control information determination method and communication device, and can solve the problems of low data transmission efficiency and large system resource overhead.

Active Publication Date: 2019-05-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the longer the number of bits of downlink control information, the greater the overhead of occupying system resources, and thus the lower the efficiency of data transmission.

Method used

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  • Downlink control information determination method and a communication device
  • Downlink control information determination method and a communication device
  • Downlink control information determination method and a communication device

Examples

Experimental program
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Embodiment Construction

[0149] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0150] Firstly, the technical concepts involved in the embodiments of the present application are briefly introduced.

[0151] The time domain of the LTE system is identified by a radio frame. A radio frame includes 10 subframes, and the length of each subframe is 1 millisecond. Each subframe includes two time slots, and each time slot is 0.5 milliseconds.

[0152] The number of symbols included in each slot is related to the length of a cyclic prefix (cyclic prefix, CP) in a subframe. If the CP is a common CP, each slot includes 7 symbols, and each subframe consists of 14 symbols. For example, each subframe is composed of sequence numbers #0, #1, #2, #3, #4, #5 , #6, #7, #8, #9, #10, #11, #12, #13 symbols. If the CP is a long CP, each time slot includes 6 symbols, and each subframe consists of 12...

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PUM

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Abstract

The embodiment of the invention discloses a downlink control information determining method and device. wherein the network device determines downlink control information, wherein the downlink controlinformation comprises at least one information domain; and the network device sends the downlink control information in a public search space or a public control resource set, or sends the downlink control information in a specific search space or a specific control resource set of the terminal device, and the terminal device receives the downlink control information and determines the information indicated by the at least one information domain. Through the scheme provided by the embodiment of the invention, the requirements of various communication scenes can be better met.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method for determining downlink control information and a communication device. Background technique [0002] In a communication system, before a terminal device receives downlink data or sends uplink data, it needs to obtain the scheduling information configured by the network device to the terminal device, such as time-frequency resource allocation, modulation and coding mode, etc. In addition, the network device also needs to notify the terminal device and uplink Transmit related power control commands and other information. Therefore, the network device sends downlink control information (DCI) to the terminal device. The downlink control information carries one or more information fields, and each information field indicates information such as scheduling information and power control commands for the terminal device. It can be considered that downlink control contr...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W72/04H04L1/18
CPCH04L1/003H04L1/0027H04L1/0026H04W72/0453H04L1/1812H04L1/0038H04W72/23H04L1/00H04L1/18H04W72/04H04W72/12H04L5/0053H04L5/001H04L5/0094H04W72/0446H04W76/27H04L5/0092H04W72/53
Inventor 马蕊香吕永霞邵家枫宋兴华
Owner HUAWEI TECH CO LTD
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