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Mobile communication system, transmission device, reception device, and method

A technology of sending device and receiving device, which is applied in the field of sending device, mobile communication system and receiving device to achieve the effect of improving the receiving quality

Inactive Publication Date: 2011-09-07
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are cases where the acknowledgment information and CQI for the downlink data channel must be reported to the base station apparatus even though such resource blocks are not allocated.

Method used

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  • Mobile communication system, transmission device, reception device, and method
  • Mobile communication system, transmission device, reception device, and method
  • Mobile communication system, transmission device, reception device, and method

Examples

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Embodiment Construction

[0098] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In order to facilitate understanding of the invention, specific examples of numerical values ​​have been used for the description, but unless otherwise specified, these numerical values ​​are simply examples, and any appropriate value may be used.

[0099] In LTE-Advanced, it is the minimum requirement to satisfy the requirements stipulated in IMT-Advanced, and the following items are mainly considered to study the multi-access (multi-access) method.

[0100] (1) Support for sending and receiving broadband signal transmission

[0101] (2) Backward compatibility with Rel-8LTE

[0102] (3) Optimization of characteristic improvement and trade-off of control signal overhead

[0103] (4) Support of various community environments

[0104]Regarding (1), in order to satisfy the requirement of a peak data rate of 1 Gbps or higher especially in the downlink, it is necessary to e...

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Abstract

A system band is divided into a plurality of fundamental frequency blocks each having a predetermined bandwidth. A transmission device transmits an uplink control signal by using a predetermined number of fundamental frequency blocks among the plurality of fundamental frequency blocks. The transmission device includes: a mapping unit which maps control information to a subcarrier in the fundamental frequency block in a certain (first) subframe; an inverse Fourier transform unit which executes the inverse Fourier transform on the mapped signal; and a radio transmission unit which radio-transmits a transmission signal containing the signal subjected to the inverse Fourier transform, to a reception device. In a (second) subframe following the first subframe, the mapping unit maps control information to a subcarrier in a fundamental frequency block of a band different from that of the fundamental frequency block in the first subframe.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a mobile communication system, a sending device, a receiving device and a method using the next generation mobile communication technology. Background technique [0002] In the ITU-R (International Telecommunication Union Radio communication sector, the International Telecommunication Union Radio Communication Sector), calls for proposals for advanced IMT (IMT-Advanced) radio interfaces have begun, and standardization work has begun with the goal of completing the specifications in 2011. [0003] Along with this, in 3GPP (3rd Generation Partnership Project), research on LTE-Advanced (LTE-Advanced) has started as an advanced system of Release 8 LTE (hereinafter referred to as Rel-8 LTE). [0004] In such a mobile communication system, one or more resource blocks (Resource Blocks) are allocated to a user apparatus in both downlink and uplink, and communication is perfo...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04J11/00H04W72/12H04W72/14
CPCH04B1/713H04W72/00H04J13/0059H04L5/001H04L5/0023H04L5/0037H04L5/0053H04L5/0012H04L27/2628H04L27/265H04W72/0453
Inventor 三木信彦川村辉雄樋口健一佐和桥卫
Owner NTT DOCOMO INC
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