LTEPDCCH (Long Term Evolution System Physical Downlink Control Channel) blind inspection control method and device

A control method and a technology for physical downlink control, which are applied in the field of blind detection control methods and devices for LTE PDCCH, can solve the problems of large computational load, long search time, and high probability of false detection, and achieve the effect of reducing the number of blind detections

Active Publication Date: 2011-11-23
合肥东芯通信股份有限公司
View PDF6 Cites 73 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In view of this, the present invention provides a blind detection control method and device for LTE PDCCH to overcome the unnecessary system

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
  • LTEPDCCH (Long Term Evolution System Physical Downlink Control Channel) blind inspection control method and device
  • LTEPDCCH (Long Term Evolution System Physical Downlink Control Channel) blind inspection control method and device
  • LTEPDCCH (Long Term Evolution System Physical Downlink Control Channel) blind inspection control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Please refer to the attached figure 2 , is a flow chart of a blind detection control method for an LTE PDCCH disclosed by the present invention, mainly comprising the following steps:

[0096] Step S101, obtain the number of CCEs occupied by the PDCCH, that is, determine the size of the entire PDCCH search space, initialize the entire PDCCH search space according to the number of CCEs, and calculate the range of aggregation levels for detection based on the number of CCEs.

[0097] Execute step S101, after obtaining the number of CCEs occupied by the PDCCH, initialize the entire PDCCH search space, and the initialization is carried out in units of CCEs; at the same time, calculate the range of the aggregation level to be detected in the blind detection process through the number of CCEs occupied by the PDCCH , that is, to limit the detected aggregation levels within a certain range according to this condition, thereby reducing subsequent processing on the number of agg...

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 discloses a LTE PDCCH (Long Term Evolution System Physical Downlink Control Channel) blind inspection control method and device. According to the device, the PDCCH blind inspection times can be reduced by limiting polymerization grade ranges to be inspected in a certain range through a polymerization grade range calculation unit, a candidate PDCCH number calculation unit, an uplink/downlink scheduling state maintenance unit, a searching space state maintenance unit and a candidate PDCCH position calculation unit; and the repeated inspection of the same CCE (Control Channel Element) initial position in the same polymerization grade can be prevented by limiting the number of candidate PDCCH corresponding to each polymerization grade in a certain range; the inspected state of each CCE in a searching space is maintained to avoid the repeated inspection of CCE positions of detected DCI (Downlink Control Information) in different polymerization grades; and uplink/downlink scheduling states are maintained to reduce the inspection of uplink/downlink scheduling PDCCH number. By using all the units, the computation quantity and the searching time can be decreased; and the error inspection probability and the system power consumption can be reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, and more specifically, relates to a blind detection control method and device for an LTE (Long Term Evolution system, long term evolution system) PDCCH (physical downlink control channel, physical downlink control channel). Background technique [0002] During the current evolution from 3G to 4G, the LTE system is generally regarded as a 4G wireless communication system, which supports 1.4M to 20M system bandwidth, and the link transmission within the system bandwidth can support flexible physical resource configuration and support uplink and downlink HARQ (Hybrid Automatic Repeat Request, hybrid automatic repeat request) process, uplink power control process, and support 200 users online at the same time. The link transmission control corresponding to the above functions is mainly carried in different PDCCHs, that is, corresponding to different DCI formats (downlink control inform...

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): H04L1/00H04L27/00
Inventor 胡剑锋李亚辉张国松莫勇任江涛吴齐发唐相国
Owner 合肥东芯通信股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap