US 12,010,696 B2Granted

Communication apparatus and communication method

AssigneeSun Patent Trust

InventorsSeigo Nakao, Akihiko Nishio, Daichi Imamura, Takahisa Aoyama

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Abstract

Provided are a radio terminal device, a radio base station device, and a channel signal forming method which can prevent quality degradation of the downlink resource allocation information by reducing the frequency of the zero information addition process to the downlink resource allocation information when executing communication using an uplink unit band and multiple downlink unit bands correlated to the uplink unit band. A base station includes: a PDCCH generation unit which includes the uplink allocation information relating to the uplink unit band only in some of the channel signals formed for each of the downlink unit bands; and a padding unit which adds zero information to the downlink allocation information only in the selected some channel signals having the bandwidth of the corresponding downlink unit band smaller than that of the uplink unit band until the downlink allocation information size becomes equal to the uplink allocation information size.

Claims8

Dependent claims

A communication apparatus, for which a first downlink component carrier, a second downlink component carrier, and an uplink component carrier are configured, the communication apparatus comprising:

circuitry, which, in operation, generates a first downlink control signal with a first payload size and a second downlink control signal with a second payload size,
wherein the first downlink control signal includes first resource allocation information related to one of the uplink component carrier and the first downlink component carrier, and the second downlink control signal includes second resource allocation information related to the second downlink component carrier;
and
a transmitter, which is coupled to the circuitry and which, in operation, transmits the first downlink control signal over the first downlink component carrier and transmits the second downlink control signal over the second downlink component carrier;
wherein, the first payload size is determined based on a larger one of a number of information bits related to the first downlink component carrier and a number of information bits related to the uplink component carrier;
and
wherein, the second payload size is determined based on a number of information bits related to the second downlink component carrier.

4 more elements

A communication method performed by a communication apparatus, for which a first downlink component carrier, a second downlink component carrier, and an uplink component carrier are configured, the communication method comprising:

generating a first downlink control signal with a first payload size and a second downlink control signal with a second payload size,
wherein the first downlink control signal includes first resource allocation information related to one of the uplink component carrier and the first downlink component carrier, and the second downlink control signal includes second resource allocation information related to the second downlink component carrier;
and
transmitting the first downlink control signal over the first downlink component carrier and the second downlink control signal over the second downlink component carrier;
wherein, the first payload size is determined based on a larger one of a number of information bits related to the first downlink component carrier and a number of information bits related to the uplink component carrier;
and
wherein, the second payload size is determined based on a number of information bits related to the second downlink component carrier.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/332,659Filed 27 May 2021 · continuation
Priority: JP 2008-28138831 Oct 2008
Published: US 2021/0289483 A116 Sep 2021
Granted: 11 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04L 1/004
Arrangements for detecting or preventing errors in the information received: by using forward error control
H04L 5/001
The frequencies being orthogonal, e.g. OFDM or DMT: the frequencies being arranged in component carriers
H04L 5/003
Arrangements affording multiple use of the transmission path: arrangements for allocating sub-channels of the transmission path

Family

PCT/JP2009/005788Parent of this division · filed 30 Oct 2009
Application14/012,856Parent of this continuation · filed 28 Aug 2013
US 8,743,805 B2Parent of this division · filed 3 Jun 2014
Application14/334,499Parent of this continuation · filed 17 Jul 2014
US 8,817,819 B2Parent of this continuation · filed 26 Aug 2014
Application14/966,278Parent of this continuation · filed 11 Dec 2015
US 9,240,873 B2Parent of this continuation · filed 19 Jan 2016
Application15/975,409Parent of this continuation · filed 9 May 2018
US 9,999,036 B2Parent of this continuation · filed 12 Jun 2018
Application16/802,968Parent of this continuation · filed 27 Feb 2020
US 10,631,282 B2Parent of this continuation · filed 21 Apr 2020
US 2021/0289483 A1Pre-grant publication · published 16 Sep 2021
US 11,051,294 B2Parent of this continuation
Application13/125,422Parent of this division
Application14/012,856Parent of this division
US 2011/0199999 A1Published application
US 2014/0010191 A1Published application
US 2014/0328282 A1Published application
US 2016/0128035 A1Published application
US 2018/0263023 A1Published application
US 2020/0196292 A1Published application
US 12,010,696 B2This patent

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

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