Transmission method and apparatus for carrier aggregation and uplink MIMO

• US 9,036,583 B2
• Filed: 07/06/2011
• Issued: 05/19/2015
• Est. Priority Date: 07/16/2010
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lim, Suhwan, Jung, Manyoung, Yang, Yoonoh, Lee, Sangwook
• Primary Examiner(s): O'Connor, Brian
• Application Number:
  US13/809,376
• Publication Number:
  US 20130114578A1
• Time in Patent Office: 1,413 Days
• Field of Search: 370/328, 370/329, 370/334, 370/336, 455/59, 455/60, 455/101, 455/103
• US Class Current: 370/329
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04B 7/0404 the mobile station comprising multiple antennas, e.g. to provide uplink diversity
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0613 using simultaneous transmission H04B7/0686 takes precedence

Abstract

A transmission method for carrier aggregation, more particularly, for uplink MIMO and carrier aggregation, in a method for transmitting an uplink signal by the carrier aggregation in a terminal having at least four antennas, includes receiving a grant signal for transmission of the uplink signal, the grant signal including information related to use of a primary cell and a secondary cell, determining one antenna or at least two antennas to use the primary cell, determining one antenna or at least two antennas to use the secondary cell, and transmitting a first uplink signal to the primary cell and a second uplink signal to the secondary cell using the respective determined antennas.

Claims

1. A transmission method for uplink Multi-Input Multi-Output (MIMO) and Carrier Aggregation (CA), in a method for transmitting an uplink signal by CA in a terminal having at least four antennas, the method comprising:

receiving a grant signal for transmission of an uplink signal, the grant signal including information related to uplink antenna configuration for a primary cell and a secondary cell;

determining one antenna or at least two antennas to use for the primary cell and the secondary cell using the uplink antenna configuration; and

transmitting a first uplink signal on the primary cell and a second uplink signal on the secondary cell using the determined respective antennas,

wherein the antennas for the primary cell do not overlap the antennas for the secondary cell,

wherein when at least two antennas are used for the primary cell, the at least two antennas for the primary cell are not adjacent to each other, and

wherein when at least two antennas are used for the secondary cell, the at least two antennas for the secondary cell are not adjacent to each other.

2. The method of claim 1, wherein the transmission of the first uplink signal on the primary cell and the second uplink signal on the secondary cell using the determined respective antennas are an inter-band or intraband transmission.

3. A transmission apparatus for uplink Multi-Input Multi-Output (MIMO) and Carrier Aggregation (CA), in an apparatus for transmitting an uplink signal by CA in a terminal having at least four antennas, the apparatus comprising:

a receiver configured to receive a grant signal for transmission of the uplink signal, the grant signal including information related to uplink antenna configuration for a primary cell and a secondary cell;

a controller configured to determine one antenna or at least two antennas to use for the primary cell and the secondary cell; and

a transmitter configured to transmit a first uplink signal to the on the primary cell and a second uplink signal on the secondary cell using the determined respective antennas,

wherein the controller determines the antennas to be used for the primary cell and the secondary cell in a non-overlapped state,

wherein when at least two antennas are used for the primary cell, the at least two antennas for the primary cell are not adjacent to each other, and

wherein when at least two antennas are used for the secondary cell, the at least two antennas for the secondary cell are not adjacent to each other.

4. The apparatus of claim 3, wherein the transmission of the first uplink signal to the primary cell and the second uplink signal to the secondary cell using the determined respective antennas are an inter-band or intraband transmission.