Random access response sending method and system

A technology of random access response and sending method, which is applied in transmission systems, digital transmission systems, electrical components, etc., and can solve problems such as RA--RNTI confusion

Active Publication Date: 2019-05-14
CHENGDU TD TECH LTD
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a method and system for sending a random access response, which can solve the problem of: in an FDD cell configured with a pair of FDD carriers and at least one uplink carrier of a different frequency point, different uplink carriers The problem of RA--RNTI confusion corresponding to PRACH

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
  • Random access response sending method and system
  • Random access response sending method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] For the uplink large bandwidth requirement of video upload, a special FDD cell can be established in the LTE system: the FDD cell includes a pair of FDD carriers and one or more uplink carriers with different frequency points. Among a pair of FDD carriers in an FDD cell, the downlink carrier is the only downlink carrier in this special FDD cell, and the uplink carrier is the main uplink carrier of this special FDD cell. uplink secondary carrier.

[0020] In this special FDD cell, the FDD frame structure is adopted: the only downlink carrier and each uplink carrier adopt the FDD frame structure, and the only downlink carrier in the FDD cell performs all the downlink carriers in the ordinary FDD cell in the same way. The uplink main...

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 random access response sending method and system. The method includes: configuring an uplink carrier in a FDD cell configured with a pair of FDD carriers and an uplink carrier of the at least one different frequency point, and configuring an uplink carrier for the user equipment UE supporting the cell, and carrying, in the configuration information of the uplink carrier,each allocated for the UE The identifier of the uplink carrier; when the UE sends the PRACH on the configured one of the uplink carriers, and the uplink carrier corresponds to the PDCCH search space in the control domain on the downlink carrier that is unique to the FDD cell, determining according to the identifier corresponding to the carrier The RA-RNTI corresponding to the PRACH, and after transmitting the PRACH, detecting the RA-RNTI scrambled PDCCH in the PDCCH search space in a RAR detection window, and if the corresponding RA-RNTT scrambled PDCCH is detected, according to The downlink control information DCI on the PDCCH receives the PDSCH. With the present invention, the problem that the RA-RNTI corresponding to the PRACH on different uplink carriers is confused in the FDD cell inwhich the uplink carriers of the pair of FDD carriers and the at least one inter-frequency point are configured can be solved.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a random access response sending method and system. Background technique [0002] At present, in the third generation partnership project (3GPP) protocol of the wireless interface, the FDD cell of LTE has a pair of carriers: an uplink carrier and a downlink carrier, and the downlink carrier sends a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) and Physical Broadcast Channel (PBCH). The user equipment (UE) learns the physical layer cell identity (ID) of the FDD cell, the duplex mode of the cell, and the radio frame timing and subframe timing of the cell by detecting the PSS and SSS carried by the downlink carrier. After that, the UE can determine the lower two digits of the radio frame number in the FDD cell and the number of downlink transmission ports of the cell by detecting the PBCH carried by the downlink carrier, and can obtain 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
Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/04H04W72/12H04W72/14H04W74/08
Inventor 魏立梅袁乃华范晨朱玉梅周志宏
Owner CHENGDU TD TECH LTD
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