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

Methods for sending, receiving and transmitting downlink control information and related devices

A technology for controlling information and sending methods, applied in wireless communication, electrical components, multi-frequency code systems, etc., to achieve the effect of low overhead

Inactive Publication Date: 2012-08-01
ZTE CORP
View PDF3 Cites 61 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The technical problem to be solved by the present invention is to provide a method for sending, receiving and transmitting downlink control information and related devices, so as to solve the problem of how to send, receive and monitor downlink control information in the indoor hotspot coverage scenario of LTE

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
  • Methods for sending, receiving and transmitting downlink control information and related devices
  • Methods for sending, receiving and transmitting downlink control information and related devices
  • Methods for sending, receiving and transmitting downlink control information and related devices

Examples

Experimental program
Comparison scheme
Effect test

application example 1

[0111] In the LTE or LTE-Advance indoor hotspot coverage scenario, which can also be called the LTE-LAN ​​scenario, in all subframes of a wireless frame, the OFDM symbol position transmitted by the downlink control channel PDCCH can be set as follows:

[0112] method one:

[0113] The information in the PCFICH indicates that the PDCCH of LTE or LTE-A is transmitted on OFDM symbols 0-2 in the first time slot of a subframe, and the PDSCH and other channels are transmitted on the remaining OFDM symbols. A segment of frequency domain resources (one or more continuous subcarriers) corresponding to the PDSCH is used to transmit the PDCCH of the LTE-LAN. Such as Figure 5 shown in . The time domain position of the PDCCH corresponding to the LTE-LAN ​​is consistent with the time domain position of the PDSCH on the subframe.

[0114] Wherein, the PDCCH of LTE-LAN ​​in the first time slot can be used for resource scheduling of the downlink serving cell, etc., and the PDCCH of LTE-LAN...

application example 2

[0123] In the LTE or LTE-Advance indoor hotspot coverage scenario, also known as the LTE-LAN ​​scenario, after the base station sends downlink control channel information, the UE monitors the corresponding DCI format through the transmission mode configured by the base station. The monitoring methods can be as follows Several:

[0124] method one:

[0125] Which aggregation level or aggregation levels (aggregation levels) need to be monitored when configuring UE monitoring through high-level signaling, the monitoring refers to monitoring in a public search space and a UE-specific search space. The number of PDCCH candidates to be monitored at each aggregation level is different from that specified in LTE / LTE-A, but the total number of PDCCH candidates to be monitored is the same as that specified in LTE / LTE-A.

[0126] For example, high-level signaling notifies UE to use aggregation levels 1 and 2 to monitor PDCCH, then the monitoring method under this carrier can be as shown...

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 methods for sending, receiving and transmitting downlink control information (DCI) and related devices. More specifically, the sending method comprises: a base station sends DCI to user equipment (UE) on N subcarriers corresponding to a subframe through a physical downlink control channel (PDCCH), wherein the N is a positive integer and the PDCCH is located at one or two slots in the subframe; when the PDCCH is located on the one slot in the subframe, a time domain termination position of the PDCCH is a last orthogonal frequency division multiplexing (OFDM) symbol of the slot; and when the PDCCH is located on the two slots in the subframe, the time domain termination position of the PDCCH is a last OFDM symbol of the subframe. According to the invention, sending, receiving and monitoring of DCI are carried out in the scene of indoor hotspot coverage of long term evolution (LTE); and moreover, transmission with low cost, rapid rate and high reliability is realized.

Description

technical field [0001] The invention relates to the field of mobile wireless communication, in particular to a method for sending, receiving and transmitting downlink control information in a wireless communication system and related devices. 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 t...

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): H04W72/12H04L27/26
Inventor 吴欣戴博郁光辉郝鹏夏树强梁春丽许进张峻峰段灿
Owner ZTE CORP
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com