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Method and apparatus for performing uplink/downlink transmission in a flexible subframe

a subframe and flexible technology, applied in the field of wireless communication systems, can solve the problems of interference of uplink signal of a ue, interference of downlink signal transmitted to a ue in the cell, etc., and achieve the effect of improving the performance of ul/dl transmission

Inactive Publication Date: 2014-07-24
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent is about a method and device for transmitting data in a flexible way to improve performance. This can be useful for improving the transmission of data in different situations.

Problems solved by technology

However, problems exist in such a system.
In a cell using the subframe for uplink transmission, an uplink signal of a UE may suffer interference caused by a downlink signal from an adjacent base station.
In a cell using the subframe for downlink transmission, a downlink signal transmitted to a UE in the cell may suffer interference caused by an uplink signal from a UE in an adjacent cell.
Such changes in interference may affect transmission of downlink control signaling and downlink data in the flexible subframes.

Method used

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  • Method and apparatus for performing uplink/downlink transmission in a flexible subframe
  • Method and apparatus for performing uplink/downlink transmission in a flexible subframe
  • Method and apparatus for performing uplink/downlink transmission in a flexible subframe

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Embodiment Construction

[0020]Hereinafter, various embodiments of the present invention are described with reference to the accompanying drawings. In the following description of the present, a detailed description of known functions and configurations incorporated herein may be omitted when such a description may obscure the subject matter of the present invention.

[0021]In a TDD system that supports a flexible configuration of the distribution of UL / DL subframes according to an embodiment of the present invention, a UL / DL configuration is still sent in broadcast channel SIB1 in order to provide backward compatibility, and all UEs in a cell can receive the UL / DL configuration, which is referred to herein as “SIB1 backward UL / DL configuration”. UEs may be classified into two categories based on whether the UEs supports flexible configuration of distribution of UL / DL subframes. One of the two categories includes UEs that do not support flexible configuration of distribution of UL / DL subframes. UEs of categor...

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Abstract

A method and apparatus for performing uplink / downlink (UL / DL) transmission in a flexible subframe are provided. The method includes receiving downlink transmission configuration information in a flexible subframe that is different from configuration information of a subframe that has a fixed duplexing direction; detecting downlink control information transmitted by a base station in the flexible subframe; receiving downlink data corresponding to the downlink control information; and reporting Hybrid Automatic Repeat reQuest ACKnowledgment (HARQ-ACK) for the downlink data and downlink Channel State Indication (CSI) information to the base station.

Description

PRIORITY[0001]This application claims priority under 35 U.S.C. §119(a) to Chinese Patent Application Nos. 201310020656.5, 201310070609.1, 201310116424.X and 201310367667.0 which were filed in the State Intellectual Property Office of the People's Republic of China on Jan. 18, 2013, Mar. 6, 2013, Apr. 3, 2013, and Aug. 21, 2013, respectively, the entire content of each of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates generally to wireless communication systems, and more particularly, to a method and apparatus for performing UpLink / DownLink (UL / DL) transmission in a flexible subframe.[0004]2. Description of the Related Art[0005]A Long Term Evolution (LTE) communication system supports a Time Division Duplexing (TDD) working mode. FIG. 1 is a schematic diagram illustrating a frame structure of a TDD system. Each radio frame has a length of 10 ms and is equally divided into two half frames each hav...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04B1/50
CPCH04B1/50H04W72/048H04L1/1671H04L1/0026H04W72/23H04L1/1812H04L5/0053H04L5/0048H04L5/0007H04W72/541H04W24/10H04W72/0446
Inventor LI, YINGYANGSUN, CHENGJUN
Owner SAMSUNG ELECTRONICS CO LTD
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