US 9,438,398 B2 · Wireless base station apparatus, wireless terminal apparatus, frequency resource allocation method, and method of forming transmission signal

Abstract

A wireless base station apparatus and wireless terminal apparatus with a configuration which can prevent reductions in the accuracy of channel estimation when non-contiguous band transmission and SRS transmission are employed in an uplink line. In the base station apparatus (100), an allocation setting unit (106), which sets the reception band of an SRS at an SRS extraction unit (103) and sets the units of frequency allocation (RBG) at a CQ1 estimation unit (104) and allocation unit (105), matches the frequency position at the end of the SRS reception band to the frequency position at the end of any of the units of frequency allocation and sets the reception bandwidth of the reference signal to a natural number multiple of the bandwidth of the unit of frequency allocation. In the terminal apparatus (200), a band information setting unit (204), which sets the transmission band and units of frequency allocation (RBG), matches the frequency position at the end of the transmission band to the frequency position at the end of any of the units of frequency allocation and sets the transmission bandwidth of the SRS to a natural number multiple of the bandwidth of the unit of frequency allocation.

Claims17

Dependent claims

A communication apparatus comprising:

transmission band setting circuitry, which, in operation, configures a plurality of consecutive resource block groups (RBGs) in a system band, and configures a sounding reference signal transmission band (SRS transmission band) on a portion of the system band, wherein a frequency position of an edge of one of the plurality of RGBs matches with a frequency position of an edge of the SRS transmission band;
and
mapping circuitry, which, in operation, maps a sounding reference signal (SRS) to the SRS transmission band, a number of RBs included in the SRS transmission band being a multiple of a number of resource blocks (RBs) that form one RBG.

Dependencies are inferred from the claim text.

Facts

Application

14/875,444Filed 5 Oct 2015 · continuation

Priority

JP 2009-09622110 Apr 2009

Published

US 2016/0028523 A128 Jan 2016

Granted

6 Sep 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver
H04B 1/713
Spread spectrum techniques: using frequency hopping
H04L 5/0041
Inter-user or inter-terminal allocation: frequency-non-contiguous
H04L 5/0057
Allocation of signalling, i.e. of overhead other than pilot signals: physical resource allocation for CQI

Family

PCT/JP2010/002616Parent of this continuation · filed 9 Apr 2010

Application14/673,069Parent of this continuation · filed 30 Mar 2015

US 9,019,906 B2Parent of this continuation · filed 28 Apr 2015

US 2016/0028523 A1Pre-grant publication · published 28 Jan 2016

US 9,184,891 B2Parent of this continuation

Application13/258,351Parent of this continuation

US 2012/0008589 A1Published application

US 2015/0270941 A1Published application

US 9,438,398 B2This patent

From the US filing history. Foreign family members aren’t listed.

Wireless base station apparatus, wireless terminal apparatus, frequency resource allocation method, and method of forming transmission signal

Life of this patent

Wireless base station apparatus, wireless terminal apparatus, frequency resource allocation method, and method of forming transmission signal

Life of this patent

Abstract

Claims17