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Method of controlling power in wireless communication system

A wireless communication system and power technology, applied in the field of wireless communication, can solve problems such as changing the coding rate

Inactive Publication Date: 2010-09-22
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in cases where the control channel uses a fixed modulation and does not receive retransmissions, the coding rate must be changed semi-statically with respect to a wide variety of input signals

Method used

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  • Method of controlling power in wireless communication system
  • Method of controlling power in wireless communication system
  • Method of controlling power in wireless communication system

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Embodiment Construction

[0032] figure 1 is a block diagram showing a wireless communication system, which may be a network structure of an Evolved Universal Mobile Telecommunications System (E-UMTS). E-UMTS is also known as Long Term Evolution (LTE). The wireless communication system can be widely deployed to provide various communication services such as voice, packet data, and so on.

[0033] refer to figure 1 , an evolved UMTS terrestrial radio access network (E-UTRAN) includes a base station (BS) 20 for providing a control plane and a user plane.

[0034] User Equipment (UE) 10 may be fixed or mobile, and may be referred to as a Mobile Station (MS), User Terminal (UT), Subscriber Station (SS), wireless device, and the like. Base station 20 generally represents a fixed station that communicates with UE 10 and may be referred to as an evolved Node B (eNB), base transceiver station (BTS), access point (AP), or the like. Base station 209 may provide service to at least one cell. The cell is an a...

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Abstract

Provided is a method of controlling power of a downlink channel in a wireless communication system, the method including: transmitting at least one data to a user equipment; receiving feedback information for the data from the user equipment; and controlling downlink transmission power using the feedback information. It is possible to control the power without time delay and additional use of radio resources in a VoIP service which is responsible for satisfying a fixed transmission rate in real time. Moreover, it is possible to control the power without waste of control channels to perform PDCCH link adaptation.

Description

technical field [0001] The present invention relates to wireless communication, and more particularly, to a method of controlling the power of a downlink channel in a wireless communication system. Background technique [0002] Next-generation multimedia wireless communication systems, which have been extensively researched, are required in order to process various information such as images, wireless data, etc. at a high data transfer rate, in addition to voice-oriented services provided in the early stage. [0003] Therefore, Orthogonal Frequency Division Multiplexing (OFDM) with a high data transfer rate has recently drawn more attention. OFDM is a multicarrier modulation scheme that divides the frequency band into a number of orthogonal subcarriers to transmit data. OFDM can reduce inter-symbol interference with low complexity. The OFDM sequentially converts an input data symbol into N parallel data symbols, respectively loads the N parallel data symbols on N subcarrie...

Claims

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Application Information

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IPC IPC(8): H04B7/26
CPCH04W52/143H04W52/265H04W52/241H04L61/4535
Inventor 崔镇洙金宗珉郑载薰
Owner LG ELECTRONICS INC
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