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Methods and devices for random access

A technology of random access preamble and random access process, which is applied in the direction of electrical components, synchronization devices, duplex signal operations, etc.

Active Publication Date: 2016-04-06
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may cause problems in some communication situations when a communicating party (eg user equipment or base station) determines which TDD configuration another communicating party (eg base station or user equipment) is currently using

Method used

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  • Methods and devices for random access
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  • Methods and devices for random access

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Embodiment Construction

[0058] Embodiments of the present disclosure will be described below with reference to the accompanying drawings. In the following description, numerous specific details are illustrated in order to provide a more complete understanding of the present disclosure. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these details. Additionally, it should be understood that the invention is not limited to the specific embodiments as presented herein. On the contrary, the following combinations of features and elements can be considered to implement and realize the present invention regardless of whether they relate to different embodiments. For example, although the following is described in the context of an LTE or LTE-A type wireless communication system for example purposes, those skilled in the art will recognize that one or more embodiments of the present disclosure are applicable to various other types of wireless comm...

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PUM

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Abstract

One embodiment of the present disclosure relates to a method for random access in a UE in an out-of sync status. The method comprises: sending to a base station a first message including a random access preamble according to a TDD configuration in a SIB; receiving from the base station a second message including a random access response using the random access preamble according to the TDD configuration in the SIB. Another embodiment of the present invention also relates to corresponding method for random access in a base station. According to an aspect of the present disclosure, there are provided corresponding devices.

Description

technical field [0001] The present disclosure relates generally to wireless communications, and in particular to methods and apparatus for random access. Background technique [0002] With the development of Long Term Evolution (LTE) or Long Term Evolution-Advanced (LTE-A), a new feature called Dynamic Time Division Duplex (TDD) is proposed. [0003] For a communication device capable of operating in dynamic TDD mode, such as a user equipment, it may be assigned more than one TDD configuration. This may cause problems in some communication situations when a communicating party (eg user equipment or base station) determines which TDD configuration another communicating party (eg base station or user equipment) is currently using. Contents of the invention [0004] One or more methods and apparatuses according to the present disclosure aim to provide a communication solution for a communication device that can operate in a dynamic TDD scenario. [0005] According to one as...

Claims

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Application Information

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IPC IPC(8): H04W72/10H04W74/08
CPCH04W56/001H04W74/006H04W74/0833H04L5/14
Inventor 范锐E·埃里克森宋兴华
Owner TELEFON AB LM ERICSSON (PUBL)