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Control information detection method, control information sending method and equipment

A technology for control information and detection methods, which is applied in wireless communication, signaling distribution, multiplexing communication, etc., and can solve problems such as large scheduling delay and inability to meet low-latency services.

Active Publication Date: 2018-05-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, DCI transmission based on a transmission time interval of 1 ms will cause a relatively large scheduling delay when transmitting DCI, which cannot meet the needs of low-latency services.

Method used

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  • Control information detection method, control information sending method and equipment
  • Control information detection method, control information sending method and equipment
  • Control information detection method, control information sending method and equipment

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Embodiment Construction

[0039] The embodiments of the present application may be applied to a wireless communication system including a network device and a terminal device (terminal device or terminal equipment). For example, LTE system, or other wireless communication systems using various wireless access technologies, such as code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division multiple access, etc. systems with advanced technology, and subsequent evolution systems, such as fifth-generation (5G) systems, etc.

[0040] Specifically, the embodiments of the present application may be applied to data transmission between a terminal device and a network device, data transmission between a terminal device and a terminal device, or data transmission between a network device and a network device. A terminal device may be a device that provides voice or data connectivity to a user, ...

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Abstract

The invention provides a control information detection method, a control information sending method and equipment. The detection method comprises the following steps that terminal equipment determinesa first search space and a second search space, wherein the first search space is part of the second search space; the terminal equipment detects at least one first type of DCI in the first search space; and the terminal equipment detects at least one second type of DCI in the second search space, wherein the first type of DCI is used for scheduling data transmission with a first time length, thesecond type of DCI is used for scheduling data transmission with a second time length, and the first time length is smaller than the second time length. Through adoption of the method or the equipment in the embodiments of the invention, the search space of the data transmission with the low time delay requirement is small, and the blind detection frequency is small, so that the scheduling information can be quickly acquired, and the data processing speed is increased.

Description

technical field [0001] The present application relates to the field of wireless communication, in particular to a method for detecting and sending control information and a method and equipment. Background technique [0002] In addition, the network device also needs to notify the terminal device of power control command information related to uplink transmission. These scheduling information and power control command information are called downlink control information (DCI for short). [0003] In a long term evolution (long term evolution, LTE) system, a network device mainly carries DCI through a physical downlink control channel (physical downlink control channel, PDCCH). In the current wireless communication system, whether it is the PDCCH or the enhanced physical downlink control channel (enhanced PDCCH, ePDCCH for short), when performing DCI transmission, the length of the transmission time interval (transmission time interval, TTI for short) is 1 ms. [0004] In a w...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0053H04W72/23H04W72/04H04L5/0007H04W72/535H04J11/0069H04W80/08
Inventor 李超君邵家枫成艳
Owner HUAWEI TECH CO LTD
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