US 8,077,593 B2 · Radio communication mobile station device and correlation setting method

Abstract

Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that the preamble transmission time band and the SRS transmission time band are in the same transmission time band. An SRS transmission band decision unit (103) decides a time interval of a transmission time band which can transmit the SRS according to the preamble transmission time interval inputted from a preamble transmission band decision unit (101) and the correlation rule setting unit (102).

Claims13

Dependent claims

A mobile station apparatus comprising:

a mapping unit configured to map a Sounding Reference Signal (SRS) to a position of a guard time in a subframe, in which a random access preamble is transmitted, the guard time during which nothing is transmitted being added to the last of the random access preamble, and a cyclic prefix being added to the beginning of the random access preamble;
and
a transmitting unit configured to transmit the mapped SRS,
wherein the random access preamble is a preamble sequence selected from a set of preamble sequences, and
wherein the guard time is of a given time length.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/672,679Filed 7 Aug 2008

Priority

JP 2007-2071878 Aug 2007

Published

US 2010/0273494 A128 Oct 2010

Granted

13 Dec 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04L 27/2613
Details of reference signals: structure of the reference signals
H04L 5/0007
Time-frequency: the frequencies being orthogonal, e.g. OFDM or DMT
H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver
H04L 5/0051
Allocation of pilot signals, i.e. of signals known to the receiver: of dedicated pilots, i.e. pilots destined for a single user or terminal

Radio communication mobile station device and correlation setting method

Life of this patent

Radio communication mobile station device and correlation setting method

Life of this patent

Abstract

Claims13