METHOD FOR WIRELESS COMMUNICATION BETWEEN USER EQUIPMENT AND BASE STATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING FIRST USER EQUIPMENT THAT USES SINGLE FREQUENCY BAND AND SECOND USER EQUIPMENT THAT USES PLURALITY OF FREQUENCY BANDS

• US 20110098074A1
• Filed: 10/30/2009
• Published: 04/28/2011
• Est. Priority Date: 10/30/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Jung Hoon, Kim, Ki Jun, Seo, Dong Youn, Kim, Bong Hoe, Ahn, Joon Kui, Kim, Hak Seong, Lee, Dae Won
• Granted Patent: US 8,498,649 B2
• Time in Patent Office: Days
• US Class Current: 455/509
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method for wireless communication between user equipments (UEs) and a base station in a wireless communication system that supports a first UE using a single band and a second UE using multiple bands is provided. In the method, UE receives, from the base station, resource allocation information including information regarding a downlink component carrier (CC) and an uplink CC allocated to the UE, receives the allocated downlink CC, and transmits the allocated uplink CC by applying a cell ID thereto. The allocated downlink CC is one of downlink CCs to which different cell IDs are applied, pairs of CCs are predefined by associating uplink CCs respectively with downlink CCs in order to support the first UE. When the allocated downlink and uplink CCs do not belong to the pairs of CCs, the applied cell ID is a cell ID of a downlink CC that is paired with the allocated uplink CC in the predefined pairs of CCs.

Claims

1. A method for wireless communication between a user equipment and a base station in a wireless communication system that supports a first user equipment that uses a single frequency band and a second user equipment that uses a plurality of frequency bands, the method comprising:

a user equipment receiving, from the base station, resource allocation information including information regarding a downlink component carrier and an uplink component carrier allocated to the user equipment;

receiving the allocated downlink component carrier; and

transmitting the allocated uplink component carrier by applying a cell ID thereto,

wherein the allocated downlink component carrier is one of a plurality of downlink component carriers to which different cell IDs are applied, a plurality of pairs of component carriers are predefined by associating a plurality of uplink component carriers respectively with a plurality of downlink component carriers in order to support the first user equipment, and, when the allocated downlink component carrier and the allocated uplink component carrier do not correspond to any pair of component carriers in the plurality of pairs of component carriers, the cell ID applied to the allocated uplink component carrier is a cell ID of a downlink component carrier that is paired with the allocated uplink component carrier in the plurality of predefined pairs of component carriers.

2. The method according to claim 1, wherein the allocated downlink component carrier is used only for the second user equipment.

3. The method according to claim 1, wherein the resource allocation information is transmitted through user-specific information.

4. A method for wireless communication between a user equipment and a base station in a wireless communication system that supports a first user equipment that uses a single frequency band and a second user equipment that uses a plurality of frequency bands, the method comprising:

the second user equipment being allocated at least one downlink component carrier; and

receiving the at least one downlink component carrier,

wherein the same cell ID is assigned to the at least one downlink component carrier and a different time offset is assigned to each of the at least one downlink component carrier to allow each of the at least one downlink component carrier to have a different start time point.

5. The method according to claim 4, wherein the time offset is in units of subframes.

6. A method for wireless communication between a user equipment and a base station in a wireless communication system that supports a first user equipment that uses a single frequency band and a second user equipment that uses a plurality of frequency bands, the method comprising:

the second user equipment being allocated at least one downlink component carrier; and

receiving the at least one downlink component carrier,

wherein the same cell ID is assigned to the at least one downlink component carrier and a different time delay is assigned to each of the at least one downlink component carrier to allow each of the at least one downlink component carrier to have a different start time point.

7. The method according to claim 6, wherein the time delay is a multiple of the reciprocal of a sample rate.

8. A method for wireless communication between a user equipment and a base station in a wireless communication system that supports a first user equipment that uses a single frequency band and a second user equipment that uses a plurality of frequency bands, the method comprising:

the second user equipment being allocated at least one downlink component carrier; and

receiving the at least one downlink component carrier,

wherein the same cell ID is assigned to the at least one downlink component carrier and a different cyclic shift is assigned to each of the at least one downlink component carrier to allow each of the at least one downlink component carrier to have a different start time point.

9. The method according to claim 8, wherein the cyclic shift is a multiple of the reciprocal of a sample rate.