Method and apparatus of transmitting data in multiple RF system

• US 9,900,139 B2
• Filed: 01/03/2014
• Issued: 02/20/2018
• Est. Priority Date: 08/04/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Moon Il, Han, Seung Hee, Chung, Jae Hoon, Ko, Hyun Soo, Ihm, Bin Chul
• Primary Examiner(s): Rutkowski, Jeffrey M
• Assistant Examiner(s): Deng, Fangyan
• Application Number:
  US14/147,407
• Publication Number:
  US 20140185552A1
• Time in Patent Office: 1,509 Days
• CPC Class Codes: H04L 27/2636 with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
• 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 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0041 Frequency-non-contiguous
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/1469 using time-sharing

Abstract

A method and an apparatus of receiving data, the method carried in a user equipment (UE) configured to communicate with a first cell and a second cell, are provided. The method includes: receiving a first downlink data through a first downlink channel from the first cell, receiving a second downlink data through a second downlink channel from the second cell, and transmitting a data on a third channel, wherein the data transmitted on the third channel is related to a HARQ operation, and wherein the third channel is used to transmit the data related to the HARQ operation with respect to both the first data and the second data which have been received from the first and second cells, respectively.

Claims

1. A method of receiving data in a multi-cell environment, the method being performed by a user equipment (UE) configured to communicate with a first cell and a second cell, the method comprising:

receiving, from the first cell, first control information on a first downlink channel of the first cell through a physical downlink control channel (PDCCH) region;

receiving, from the first cell, second control information on a second downlink channel of the second cell through the PDCCH region;

receiving a first downlink data through the first downlink channel from the first cell, based on the first control information;

receiving a second downlink data through the second downlink channel from the second cell, based on the second control information;

determining a common uplink channel for both the first cell and the second cell; and

performing a transmission through the determined common uplink channel to only one cell of;

the first cell and the second cell,

wherein the common uplink channel is used for transmitting, at the same time, both of;

information for the first cell and information for the second cell to only the only one cell of the first cell and the second cell, and

wherein both of the information for the first cell and the information for the second cell transmitted on the uplink channel are related to a hybrid automatic repeat request (HARQ) operation.

2. The method of claim 1, further comprising transmitting feedback information on least one of:

a precoding and a power control.

3. The method of claim 1, further comprising transmitting feedback information on least one of:

a location of the UE and an interference.

4. The method of claim 1, further comprising

transmitting a first uplink data to the first cell;

and

transmitting a second uplink data to the second cell.

5. The method of claim 4, wherein the first uplink data is transmitted on a single carrier-frequency division multiple access (SC-FDMA) signal.

6. The method of claim 1, wherein the UE supports a carrier aggregation.

7. The method of claim 1, wherein each bandwidth of the first downlink channel and the second downlink channel corresponds to a maximum of 20 megahertz (MHz).

8. The method of claim 1, wherein the UE supports a maximum of 100 megahertz (MHz) for a carrier aggregation.

9. A user equipment, comprising:

a transceiver configured to communicate with a first cell and a second cell; and

a processor coupled with the transceiver and configured to;

receive, from the first cell, first control information on a first downlink channel of the first cell through a physical downlink control channel (PDCCH) region;

receive, from the first cell, second control information on a second downlink channel of the second cell through the PDCCH region;

receive a first downlink data through the first downlink channel from the first cell, based on the first control information;

receive a second downlink data through the second downlink channel from the second cell, based on the second control information;

determine a common uplink channel for both the first cell and the second cell; and

perform a transmission through the determined common uplink channel to only one cell of;

the first cell and the second cell,

wherein the common uplink channel is used for transmitting, at the same time, both of;

information for the first cell and information for the second cell to only the only one cell of the first cell and the second cell, and

wherein both of the information for the first cell and the information for the second cell transmitted on the uplink channel are related to a hybrid automatic repeat request (HARD) operation.

10. The user equipment of claim 9, wherein the processor is further configured to transmit feedback information on least one of:

a precoding and a power control.

11. The user equipment of claim 9, wherein the processor is further configured to transmit feedback information on least one of:

a location of the UE and an interference.

12. The user equipment of claim 9, wherein the transceiver supports a carrier aggregation.

13. The user equipment of claim 9, wherein each bandwidth of the first downlink channel and the second downlink channel corresponds to a maximum of 20 megahertz (MHz).

14. The user equipment of claim 9, wherein the transceiver supports a maximum of 100 megahertz (MHz) for a carrier aggregation.