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Uplink transmission power control in multi-carrier communication systems

A technology for transmitting power and communication systems, which is applied in the field of wireless communication systems and can solve problems such as path loss not being fully compensated

Active Publication Date: 2012-04-25
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fractional TPC is obtained for α < 1 because path loss is not fully compensated

Method used

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  • Uplink transmission power control in multi-carrier communication systems
  • Uplink transmission power control in multi-carrier communication systems
  • Uplink transmission power control in multi-carrier communication systems

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Embodiment Construction

[0074] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. A detailed description of well-known functions and configurations incorporated herein will be omitted when they may obscure the subject matter of the present invention.

[0075] Although the present invention is described with respect to an Orthogonal Frequency Division Multiple Access (OFDMA) communication system, the present invention is generally applicable to all Frequency Division Multiplexing (FDM) systems, including single-carrier frequency Division Multiple Access (Single-Carrier Frequency Division Multiple Access, SC-FDMA), OFDM, FDMA, Discrete Fourier Transform (DFT)-spread OFDM, DFT-spread OFDMA, SC-OFDMA, and SC-OFDM.

[0076] The first aspect of the invention considers PUSCH TPC operation from a UE on multiple PUSCH transmissions in subframes of the same UL CC and in multiple UL CCs. According to an embodiment of the present invention, t...

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PUM

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Abstract

In a communication system wherein a User Equipment (UE) transmits at least two data channels in at least two respective component carriers, a method and apparatus for reducing a transmission power allocated to each of the least two data channels relative to each of a respective nominal transmission power, when a total nominal transmission power for the at least two data channels exceeds a predetermined value are provided. The method includes reducing a transmission power of the first data channel by a first amount; and reducing a transmission power of the second data channel by a second amount, wherein the first amount and the second amount have different values.

Description

[0001] priority [0002] This application claims priority to US Provisional Application No. 61 / 160879, entitled "Transmission Power Control in Uplink of Multi-Carrier Communication Systems," filed March 17, 2009, the contents of which are hereby incorporated by reference. technical field [0003] The present invention is generally concerned with wireless communication systems, and more particularly, the present invention relates to transmission power control for data signals and control signals. Background technique [0004] A communication system includes a downlink (DL) and an uplink (UL), where DL supports signal transmission from a base station (i.e., "Node B") to a user equipment (UE) and UL supports signal transmission from a UE to a Node B transmission. UEs are commonly referred to as terminals or mobile stations and may be fixed or mobile and may include wireless devices, cellular telephones, personal computer devices, and the like. A Node B is generally a fixed st...

Claims

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Application Information

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IPC IPC(8): H04W52/30H04W52/18
CPCH04W52/367H04W52/146H04W52/346Y02B60/50H04W52/34H04L5/0007H04L5/001H04L27/18H04W52/241H04W52/281H04W52/325H04L1/1812H04W52/242H04W52/362H04W72/12Y02D30/70H04L5/0092H04W52/18H04W72/0446
Inventor A.帕帕萨科尔拉里奥赵俊暎
Owner SAMSUNG ELECTRONICS CO LTD
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