Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for sending and detecting downlink control information

一种控制信息、发送方法的技术，应用在接入限制、无线通信、信令分配等方向，能够解决解码链制约等问题，达到小信令开销、好调度灵活性的效果

Inactive Publication Date: 2009-12-23
ZTE CORP
View PDF2 Cites 101 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage is the decoding chain problem (that is, the performance of the main PDCCH seriously restricts the overall PDCCH performance)
[0039] It can be seen that the above scheme still has shortcomings in terms of signaling overhead, blind detection times, compatibility, and bit error performance, and further research is needed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for sending and detecting downlink control information
  • Method for sending and detecting downlink control information
  • Method for sending and detecting downlink control information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The DCI format for terminal blind detection on the main (anchor) component carrier is determined by high-layer signaling related settings (RNTI and transmission mode). The DCI format to be checked on the first (anchor) component carrier includes the DCI format used for public control information scheduling (that is, the DCI format used to carry uplink power control information, system information, paging, RACH Response, etc.) and the terminal-specific first The DCI format corresponding to the three types of DCI.

[0074] method 1

[0075] As shown in Fig. 2(a), uplink and downlink scheduling each use a third type of DCI for indication.

[0076] The information carried in the third type of DCI is:

[0077] Uplink or downlink scheduling indication information, 1 bit, used to indicate uplink or downlink scheduling;

[0078] 2*n bits (bit) (2 bits for each component carrier, where 00 indicates that there is no DCI format on the corresponding component carrier, and 01, 10...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for sending and detecting downlink control information, a base station carries the downlink control information in a physical downlink control signal channel, the physical downlink control signal channel is sent through a component carrier, wherein the base station carries the first type of downlink control information on the main component carrier and carries the third type of downlink control information on the first component carrier, the first type of downlink control information carries uplink and / or downlink scheduling information and / or uplink power control information of the component carrier in which the first type of downlink control information is located, the second type of downlink control information carries uplink and / or downlink scheduling information of one or a plurality of component carriers, and the third type of downlink control information carries indication information of the second type of downlink control information. A terminal detects the first type of downlink control information on the main component carrier and detects the third type of downlink control information on the first component carrier. The method has better scheduling flexibility, compatibility and error code performance, lower blind detection times and lower signaling cost.

Description

technical field [0001] The invention relates to the field of mobile wireless communication, in particular to a method for sending and detecting downlink control information in a wireless communication system. Background technique [0002] figure 1 The frame structure of the FDD (Frequency Division Duplex, frequency division duplex) mode and the TDD (Time Division Duplex, time division duplex) mode of the LTE (Long Term Evolution, long term evolution) system is shown. In the frame structure of FDD mode, a 10ms radio frame (wireless frame) consists of twenty slots (time slots) with a length of 0.5ms and numbers 0 to 19, and time slots 2i and 2i+1 form a subframe with a length of 1ms (subframe)i. In the frame structure of the TDD mode, a 10ms radio frame (wireless frame) consists of two half frames (half frames) with a length of 5ms, and a half frame contains five subframes (subframes) with a length of 1ms. Subframe i is defined as two time slots 2i and 2i+1 with a length of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/12H04L1/00H04L27/00H04L25/02
CPCH04L5/0094H04L5/001H04L5/0007H04W72/042H04L5/0082H04L5/0053H04L5/14H04W72/1289H04W72/23
Inventor 李卫军戴博郁光辉陈艺戬
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com