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Base station apparatus and communication control method

a technology of communication control and base station, applied in the field of mobile communication system, can solve problems such as impairment of transmission characteristics or radio capacity of the system

Inactive Publication Date: 2012-06-14
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution enables effective scheduling and transmission format determination in LTE uplink communication, enhancing the overall performance and capacity of the system by ensuring optimal resource allocation and interference reduction.

Problems solved by technology

When the scheduling process or a process of determining the transmission format in the AMC (Adaptive Modulation and Coding) scheme is not adequately controlled, the transmission characteristics or radio capacity of the system may be impaired.

Method used

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  • Base station apparatus and communication control method
  • Base station apparatus and communication control method
  • Base station apparatus and communication control method

Examples

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first embodiment

[0045]Next, a best mode for carrying out the present invention is described based on a first embodiment described below with reference to the accompanying drawings.

[0046]Throughout the figures for illustrating the embodiments of the present invention, the same reference numerals are used for the same or equivalent elements and their repeated descriptions may be omitted.

[0047]First, a radio communication system having a base station apparatus according to an embodiment of the present invention is described with reference to FIG. 1.

[0048]As shown in FIG. 1, the radio communication system 1000, which may be an Evolved UTRA (Universal Terrestrial Radio Access) and UTRAN (UTRA Network) system (a.k.a an LTE (Long Term Evolution) system or a super 3G system), includes a base station apparatus (eNB: eNode B) 200 and plural sets of user equipment (UE) 100n (1001, 1002, 1003, . . . 100n; n: an integer greater than zero (0)) (hereinafter, the user equipment (UE) may be referred to as a user eq...

second embodiment

[0337]Next, a best mode for carrying cut the present invention is described based on a second embodiment described below with reference to the accompanying drawings.

[0338]Throughout the figures for illustrating the embodiments of the present invention, the same reference numerals are used for the same or equivalent elements and their repeated descriptions may be omitted.

[0339]First, a radio communication system having a base station apparatus according to an embodiment of the present invention is described with reference to FIG. 1.

[0340]As shown in FIG. 1, the radio communication system 1000, which may be an Evolved UTRA (Universal Terrestrial Radio Access) and UTRAN (UTRA Network) system (a.k.a an LTE (Long Term Evolution) system or a super 3G system), includes a base station apparatus (eNB: eNode B) 200 and plural sets of user equipment (UE) 100n (1001, 1002, 1003, . . . 100n; n: an integer greater than zero (0)) (hereinafter, the user equipment (UE) may be referred to as a user e...

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Abstract

A base station apparatus capable of communicating with a user equipment terminal using an uplink shared channel includes a radio resource allocation unit configured to decrease frequency resources allocated to the shared channel, when transmission power of the user equipment terminal is less than a predetermined threshold.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional application of U.S. patent application Ser. No. 12 / 529,294 filed Aug. 31, 2009, which is a national stage application of PCT / JP2008 / 053308 filed Feb. 26, 2008, which claims priority to JP2007 / 052111 filed Mar. 1, 2007; JP2007 / 161940 filed Jun. 19, 2007; and JP2007 / 329028 filed Dec. 20, 2007. The contents of the priority applications are hereby incorporated by reference in their entirety.TECHNICAL FIELD[0002]The present invention generally relates to a mobile communication system employing an Orthogonal Frequency Division Multiplexing (OFDM) scheme, and more particularly to a base station apparatus and a communication control method.BACKGROUND ART[0003]As a next-generation system of the W-CDMA (Wideband Code Division Multiple Access) and the HSDPA (High Speed Downlink Packet Access), an LTE system has been studied by 3GPP (3rd Generation Partnership Project) which is a standards body of the W-CDMA. In the L...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W24/00H04W68/00H04W72/54H04W74/06
CPCH04W72/1268H04W52/365H04B17/309H04L1/0003H04W72/0453H04W88/08
Inventor ISHII, HIROYUKINISHIKAWA, DAISUKE
Owner NTT DOCOMO INC