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

Method and device for random access

A random access and random correlation technology, applied in the field of communication, can solve problems such as undeveloped procedures

Active Publication Date: 2011-04-27
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 116 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Under the existing technology, in the LTE-A system, for multiple cells configured for the UE, the random access process of the pcell (primary cell) can refer to the execution mode of the LTE system, and how the scell (secondary cell) should initiate random access The access process is to maintain the uplink synchronization between each cell and the network side. The relevant process has not yet been formulated and needs to be further improved.

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 and device for random access
  • Method and device for random access
  • Method and device for random access

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In the LTE-A system using the CA technology, in view of the fact that the TA (Timing adjustment, uplink synchronization timing advance) information of each cell (secondary cell) configured by the network side for the UE may be different, the present invention provides a A method for instructing a UE to initiate an RA (Random Access, random access) procedure by using RRC signaling. Specifically:

[0035] The device on the network side determines the scell configured for the UE, obtains the RA-related parameters set for the scell, and sends the RA-related parameters to the UE, so that the UE, according to the received RA-related parameters, selects the RA-related parameters in each scell configured for it on the network side. , select the scell configured with RA-related parameters to initiate a random access procedure. After the UE on the terminal side receives the RA-related parameters set for the locally configured sells sent by the network side, according to the RA-r...

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 method and a device for random access (RA), which are used in an LTE (long term evolution)-A system employing carrier aggregation technology and realize random access for user equipment (UE) gathering a plurality of cells. The method comprises that: a base station acquires an RA related parameter set for an auxiliary cell of terminal configuration, and sends the RA related parameter to a terminal; the terminal receives an RA related parameter set for an auxiliary cell of local configuration and sent by a network side, and selects the auxiliary cell corresponding to the RA related parameter from various auxiliary cells of the local configuration according to the RA related parameter to initiate a random access flow. Therefore, the aim that the UE is synchronous with the network side in a specific auxiliary cell through the random access is fulfilled, so that the UE keeps uplink synchronism with the network side in the configured scell, and the overall performance of the system is ensured.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for performing random access. Background technique [0002] In the prior art, for the LTE Advanced system (referred to as the LTE-A system), a higher execution standard than that of the LTE system has been formulated, for example, the peak rate is required to reach 1 Gbps in the downlink and 500 Mbps in the uplink. At the same time, good compatibility between the LTE-A system and the LTE system is required. Based on the improvement of the peak rate, the compatibility with the LTE system and the need to fully utilize spectrum resources, the LTE-A system introduces a CA (Carrier Aggregation, carrier aggregation) technology. [0003] The so-called carrier aggregation technology refers to a mechanism in which a base station can configure multiple cells (cells) for a UE at the same time, so that multiple cells can provide data transmission services for the UE at ...

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): H04W74/08
CPCH04W74/006H04W36/0077H04W74/0833H04W74/08
Inventor 许芳丽赵亚利梁靖
Owner DATANG MOBILE COMM EQUIP CO LTD
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