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

Method for detecting downlink control information in carrier aggregation scene and user equipment

A technology for controlling information and user equipment, applied in the field of communication, can solve problems such as inconvenience

Active Publication Date: 2010-10-20
ZTE CORP
View PDF3 Cites 50 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no determined solution to clarify how to make changes to the PDCCH monitoring method, which brings inconvenience to practical applications

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 detecting downlink control information in carrier aggregation scene and user equipment
  • Method for detecting downlink control information in carrier aggregation scene and user equipment
  • Method for detecting downlink control information in carrier aggregation scene and user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] In the carrier aggregation scenario, how to monitor the PDCCH for the UE can be as follows:

[0145] In the carrier aggregation scenario, for the primary component carrier, the UE monitors the DCI format in the common search space according to the CRC scrambled by C-RNTI, SPS C-RNTI, SI-RNTI, P-RNTI, and RA-RNTI , and in the user-specific search space, the DCI format is monitored according to the CRC scrambled by the C-RNTI and SPS C-RNTI, and the DCI format to monitor is defined by the transmission mode configured by high-layer signaling. For the secondary component carrier, the UE can monitor the DCI format in the user-specific search space according to the monitoring method of the primary component carrier, and monitor the DCI format only according to the CRC scrambled by C-RNTI in the public search space , specifically DCI format 1C is no longer monitored, but only DCI format 1A or DCI format 0 or DCI format 3 / 3A is monitored.

[0146] For the secondary component c...

Embodiment 2

[0164] In the carrier aggregation scenario, how to monitor the PDCCH for the UE can be as follows:

[0165] In the carrier aggregation scenario, for the primary component carrier, the UE monitors the DCI format in the common search space according to the CRC scrambled by C-RNTI, SPS C-RNTI, SI-RNTI, P-RNTI, and RA-RNTI , and in the user-specific search space, the DCI format is monitored according to the CRC scrambled by the C-RNTI and SPS C-RNTI, and the DCI format to monitor is defined by the transmission mode configured by high-layer signaling. As for the secondary component carrier, the UE can monitor the DCI format in the user-specific search space according to the monitoring method of the primary component carrier. In the public search space, it does not monitor all DCI formats in the public search space. Specifically, it does not Then monitor DCI format 1C, DCI format 1A, DCI format 0 and DCI format 3 / 3A.

[0166] For the secondary component carrier, the method of PDCCH...

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 detecting downlink control information. In a carrier aggregation scene, user equipment performs physical downlink control channel (PDCCH) detection on a component carrier according to the condition that the component carrier is a primary component carrier or a secondary component carrier. The invention also provides the user equipment. The method and the user equipment realize the detection of the PDCCH in the carrier aggregation scene.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for detecting downlink control information in a carrier aggregation scenario and user equipment. Background technique [0002] A radio frame (radio frame) in a Long Term Evolution (LTE, Long Term Evolution) system includes frame structures in a Frequency Division Duplex (FDD, Frequency Division Duplex) mode and a Time Division Duplex (TDD, Time Division Duplex) mode. The frame structure of FDD mode, such as figure 1 As shown, a wireless frame of 10 milliseconds (ms) consists of twenty slots (slots) with a length of 0.5ms and numbers 0 to 19, and slots 2i and 2i+1 form a subframe (subframe) with a length of 1ms i. The frame structure of TDD mode, such as figure 2 As shown, a 10ms radio frame consists of two half frames with a length of 5ms. A half frame includes five subframes with a length of 1ms. Subframe i is defined as two time slots with a length of 0.5ms. 2i a...

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
IPC IPC(8): H04W24/00H04W48/12H04W72/12
CPCH04L5/0053H04L5/001H04W72/042H04L5/0048H04L5/0098H04L1/0038
Inventor 吴欣戴博曾萍左志松
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