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Method and apparatus for controlling uplink retransmission in wireless communication system supporting multiple input and multiple output

A wireless communication system, multi-output technology, applied in radio transmission systems, diversity/multi-antenna systems, transmission modification based on link quality, etc., can solve problems such as consumption, multi-frequency resources and transmission power

Active Publication Date: 2015-09-02
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in order to transmit PDCCH, Node B should consume more frequency resources and transmission power

Method used

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  • Method and apparatus for controlling uplink retransmission in wireless communication system supporting multiple input and multiple output
  • Method and apparatus for controlling uplink retransmission in wireless communication system supporting multiple input and multiple output
  • Method and apparatus for controlling uplink retransmission in wireless communication system supporting multiple input and multiple output

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Embodiment Construction

[0067] Embodiments of the present invention are described in detail with reference to the drawings. Although shown in different drawings, the same or similar components may be designated by the same or similar reference numerals. In the following description, specific details such as detailed configuration and components are merely provided to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, detailed descriptions of structures or processes known in the art may be omitted to avoid obscuring the subject matter of the present invention.

[0068] Although the LTE system is considered in the following description of the embodiments of the present invention, the present invention can be applied not only to the LTE system but also to...

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Abstract

A method is provided for controlling retransmission by a User Equipment (UE) in a wireless communication system supporting Multiple Input Multiple Output (MIMO) technology. A plurality of transport blocks is initially transmitted to a Node B. A retransmission request for at least one transport block among the plurality of transport blocks is received from the Node B. A precoding matrix for retransmission of the at least one transport block is determined based on the retransmission request for the at least one transport block. The at least one transport block is retransmitted using the determined precoding matrix.

Description

technical field [0001] The present invention relates generally to methods and apparatus for retransmissions on the uplink (UL) of a wireless communication system, and more particularly and not exclusively, to A method and device for controlling retransmission on UL in a wireless communication system supporting multi-antenna transmission technology. Background technique [0002] Wireless communication systems have evolved into broadband wireless communication systems, which not only provide voice-oriented services but also provide high-speed and high-quality packet data services, including such as 3GPP High Speed ​​Packet Access (HSPA), Long Term Evolution (LTE), 3GPP2 High Rate Packet Data ( HRPD), Ultra Mobile Broadband (UMB), and IEEE802.16e communication standards. [0003] Recently, to improve transmission efficiency, wireless communication systems employ techniques such as Adaptive Modulation and Coding (AMC) and channel-sensitive scheduling. By using AMC, a Node B (a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04H04L1/18H04J11/00
CPCH04L1/06H04L1/1893H04B7/0426H04B7/0617H04L1/0031H04L1/1671H04L1/1812H04L25/0391H04L25/03923H04L25/03929H04L25/03942H04B7/0456H04B7/0623
Inventor 韩臸奎金润善延明勋俞汉一
Owner SAMSUNG ELECTRONICS CO LTD