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Downlink control information detection method, downlink control information transmission method and device

A technology for controlling information and detection methods, applied in the field of communication, can solve problems such as lack of flexibility

Active Publication Date: 2021-04-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the search space in the existing LTE system will only be configured once in a subframe, and there is no flexibility for data transmission of various TTI lengths or data transmission of various scheduling priorities

Method used

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  • Downlink control information detection method, downlink control information transmission method and device
  • Downlink control information detection method, downlink control information transmission method and device
  • Downlink control information detection method, downlink control information transmission method and device

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Embodiment Construction

[0100] In order to facilitate the understanding of the solutions of the embodiments of the present invention, the basic concepts involved in the embodiments of the present invention are firstly introduced. It is worth noting that the embodiment of the present invention is introduced using the LTE system as an example, but this does not mean that the embodiment of the present invention is only applicable to the LTE system. In fact, any wireless communication system that schedules data transmission through DCI can use The technical solutions provided by the embodiments of the present invention. In addition, the DCI referred to in the embodiments of the present invention refers to information used to schedule data transmission, and is not limited to downlink control information in LTE.

[0101] 1. Frame structure

[0102] A radio frame (radio frame) in the LTE system includes 10 subframes (subframe), the length of each subframe is 1 millisecond (ms), each subframe includes two s...

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Abstract

A method for detecting downlink control information, comprising: a terminal device determines at least one of a first search space and a second search space, the first search space is on a first time unit within a time window T, and the second A time unit belongs to a first time unit set, the second search space is on a second time unit within the time window T, the second time unit belongs to a second time unit set, and the time window T includes N T time units, the first set of time units and the second set of time units are the N T A subset of time units, the N T is an integer and N T ≥2, the first set of time units overlaps partially or completely overlaps with the second set of time units; the terminal device detects at least one piece of downlink control information DCI in the at least one search space. The above method can realize how to flexibly configure the search space and how to flexibly transmit DCI.

Description

[0001] This application is required to be submitted on February 02, 2016, the application number is PCT / CN2016 / 073210, the title of the invention is "downlink control information detection method, downlink control information transmission method and device" and it was submitted on August 09, 2016, and the application number is It is the priority of the international application PCT / CN2016 / 094232, the invention title is "downlink control information detection method, downlink control information transmission method and device", the entire content of which is incorporated in this application by reference. technical field [0002] The present invention relates to the communication field, in particular to a method for detecting downlink control information, a method and a device for sending downlink control information. Background technique [0003] In a wireless communication system, before a terminal device receives downlink data or sends uplink data, it needs to know the sched...

Claims

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Application Information

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IPC IPC(8): H04W24/00
CPCH04L5/0053H04L5/0037H04W92/10H04L5/0078H04W88/06H04W74/006H04W88/10H04W48/12H04W72/23H04W72/0446
Inventor 李超君邵家枫马莎
Owner HUAWEI TECH CO LTD