US 8,711,797 B2Granted

Method and apparatus for transmitting and receiving extension information of component carrier in wireless communication system

AssigneePantech Co., Ltd.

InventorsKitae Kim, Kibum Kwon

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Abstract

A base station comprises: an area information generation unit which generates information for a determined second area by determining an additional assignment of the second area different from a first area to a component carrier (CC) of the first area having a bandwidth smaller than a bandwidth of a maximum assignable CC; a mapping control unit which controls an assignment of a reference signal to a frequency band including the first and second area by generating the reference signal for channel estimation in the first and second areas; a signal generation unit which generates the information for the second area and the reference signal as a wireless signal; and a transmission unit for transmitting the generated wireless signal and is characterized by transmitting data to a user terminal and receiving the data from the user terminal by assigning the resources to the first and second areas.

Claims24

Dependent claims

A base station (BS), comprising:

a region information generator to determine additional assignment of a second region in a frequency band different from a first region in the frequency band, a component carrier (CC) of the first region having a bandwidth narrower than a maximum assignable bandwidth of the CC, and to generate information associated with the second region;
a mapping controller to generate a reference signal to be used for channel estimation in the first region and the second region, and to control the reference signal to be assigned to a frequency band including the first region and the second region;
a signal generator to generate the information associated with the second region and the reference signal assigned by the mapping controller to be a wireless signal;
an a transmitter to transmit the generated wireless signal wherein the BS allocates resources to the first region and the second region so as to perform transmission and reception of data with a user equipment (UE), and wherein the mapping controller comprises a first sequence generator and a second sequence generator, the first sequence generator generates a first sequence based on a value calculated from a bandwidth of the CC of the first region and a cell identifier (ID) of the CC of the first region, the second sequence generator generates a second sequence based on a value calculated from a bandwidth of the second region and a value obtained by adding a predetermined offset to the cell ID of the CC of the first region, and the mapping controller controls the reference signal to be assigned to the CC of the first region, based on the first sequence, and controls the reference signal to be assigned to the second region based on the second sequence.

1 more element

A method for transmitting extension information of a component carrier (CC), the method comprising:

determining an additional assignment of a second region in a frequency band that is different from a first region in the frequency band, a CC of the first region having a bandwidth narrower than a maximum assignable bandwidth of the CC;
generating and transmitting information associated with the second region;
generating a reference signal to be used for channel estimation in the first region and the second region, and transmitting the reference signal by assigning the reference signal to a frequency band including the first region and the second region;
and performing transmission and reception of data with a user equipment (UE) by allocating resources to the first region and the second region, wherein assigning and transmitting of the reference signal comprises:
assigning, to the CC of the first region, the reference signal based on a first sequence that is generated based on a value calculated from a bandwidth of the CC of the first region and a cell identifier (ID) of the CC of the first region;
and assigning, to the second region, the reference signal based on a second sequence that is generated based on a value calculated from a bandwidth of the second region and a value obtained by adding a predetermined offset to the cell ID of the CC of the first region.

3 more elements

A user equipment (UE), comprising:

a receiver to receive, from a base station (BS) through a dedicated signal, information associated with a second region in a frequency band different from a first region in the frequency band, a component carrier (CC) of the first region having a bandwidth narrower than a maximum assignable bandwidth of the CC, and to receive a signal to which a reference signal for channel estimation in the first region and the second region is assigned;
a transmitter to transmit data to the BS;
a storage device to store received information associated with the second region;
and a controller to control the storage device to store the information associated with the second region, and to control the transmitter and the receiver to perform transmission and reception of data with the BS by receiving allocation of resources in the first region and the second region, wherein a reference signal included in a bandwidth of the CC of the first region is mapped based on a first sequence that is generated based on the bandwidth of the CC of the first region and a cell identifier (ID) of a cell where the CC of the first region is included;
and a reference signal included in a bandwidth of the second region is mapped based on a second sequence that is generated based on a value calculated from the bandwidth of the second region and a value obtained by adding a predetermined offset to the cell ID of the CC of the first region.

2 more elements

A method for receiving extension information of a component carrier (CC), the method comprising:

receiving, from a base station (BS) through a dedicated signal, information associated with a second region in a frequency band different from a first region in the frequency band, a CC of the first region having a bandwidth narrower than a maximum assignable bandwidth of the CC;
receiving a signal to which a reference signal for channel estimation in the first region and the second region is assigned;
and performing transmission and reception of data with the BS by receiving allocation of resources in the first region and the second region, wherein the reference signal included in a bandwidth of the CC of the first region is mapped based on a first sequence that is generated through use of the bandwidth of the CC of the first region and a cell ID of a cell where the CC of the first region is included;
and the reference signal included in a bandwidth of the second region is mapped based on a second sequence that is generated through use of a value calculated from the bandwidth of the second region and a value obtained by adding a predetermined offset to the cell ID of the CC of the first region.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 13/521,432Filed 7 Jan 2011
Priority: KR 10-2010-000249512 Jan 2010
Published: US 2012/0320843 A120 Dec 2012
Granted: 29 Apr 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04W 72/04
Local resource management: wireless resource allocation
H04L 5/001
The frequencies being orthogonal, e.g. OFDM or DMT: the frequencies being arranged in component carriers
H04L 5/0037
Arrangements for allocating sub-channels of the transmission path: inter-user or inter-terminal allocation
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals