Method and apparatus for transceiving data using plurality of carriers in mobile communication system

• US 9,544,896 B2
• Filed: 05/09/2013
• Issued: 01/10/2017
• Est. Priority Date: 05/09/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Soeng Hun, Jang, Jae Hyuk, Choi, Jongsoo
• Primary Examiner(s): Mui, Gary
• Application Number:
  US14/398,900
• Publication Number:
  US 20150117287A1
• Time in Patent Office: 1,342 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0241 where no transmission is received, e.g. out of range of the transmitter
• CPC Class Codes: H04W 56/0005 synchronizing of arrival of multiple uplinks
• CPC Class Codes: H04W 56/0045 compensating for timing error by altering transmission time
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 76/34 Selective release of ongoing connections
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention relates to a method and apparatus for performing a discontinuous reception (DRX) operation while transceiving data using a plurality of carriers in a mobile communication system. The communication method for a terminal according to one embodiment of the present invention comprises receiving a control message, including setting information of a secondary serving cell (SCell) to be added and discontinuous reception setting information, from a primary serving cell (PCell) and applying, if the control message includes an indicator indicating that the first base station to which the SCell to be added belongs and the second base station to which the PCell belongs are different from each other, the DRX setting information to the serving cell of a first base station. According to one embodiment of the present invention, a discontinuous reception (DRX) operation is applied upon the occurrence of inter-base-station carrier aggregation, thus reducing battery consumption.

Claims

1. A communication method of a terminal in a mobile communication system, the method comprising:

receiving, from a primary serving cell (PCell), a first control message including secondary serving cell (SCell) configuration information for an SCell and discontinuous reception (DRX) configuration information;

applying, when the first control message includes an indicator indicating that a first base station for the SCell is different from a second base station for the PCell, the DRX configuration information to the SCell of the first base station;

receiving a second control message including a DRX media access layer (MAC) control element (CE);

determining whether the DRX MAC CE is received from a non-primary set serving cell or a primary set serving cell; and

stopping, if the DRX MAC CE is received from the non-primary set serving cell, the DRX timer for the non-primary set serving cell.

2. The method of claim 1, further comprising applying, if the first control message does not include the indicator, the DRX configuration information to the PCell of the second base station.

3. The method of claim 1, further comprising stopping, if the DRX MAC CE is received from the primary set serving cell, the DRX timer for the primary set serving cell.

4. The method of claim 1, wherein the DRX configuration information comprises at least one of an active time timer and a DRX-cycle parameter.

5. A communication method of a primary base station in a mobile communication system, the method comprising:

transmitting, to a terminal, a first control message including secondary serving cell (SCell) configuration information for an SCell to be added and discontinuous reception (DRX) configuration information, the first control message including an indicator indicating that a first base station for the SCell is different from a second base station for the PCell; and

transmitting a second control message including a DRX media access layer (MAC) control element (CE).

6. The method of claim 5, wherein the DRX configuration information comprises at least one of an active time timer and a DRX-cycle parameter.

7. A communication method of a base station in a mobile communication system, the method comprising:

receiving a secondary serving cell (SCell) add request message from a first base station for a primary serving cell (PCell);

transmitting a SCell parameter and discontinuous reception (DRX) configuration information to the first base station; and

transmitting a control message including a DRX media access layer (MAC) control element (CE),

wherein the DRX configuration information is applied to a SCell of a second base station, if the second base station for the SCell is different from the first base station for the PCell.

8. A terminal comprising:

a transceiver configured to communicate with a base station; and

at least one processor configured to;

control receiving, from a primary serving cell (PCell), a first control message including secondary serving cell (SCell) configuration information for an SCell and discontinuous reception (DRX) configuration information, and

applying, if the first control message includes an indicator indicating that a first base station for the SCell is different from a second base station for the PCell, the DRX configuration information to the SCell of the first base station,

wherein the at least one processor is further configured to control receiving a second control message including a DRX media access layer (MAC) control element (CE), determining whether the DRX MAC CE is received from one of a non-primary set serving cell and a primary set serving cell, and stopping, if the DRX MAC CE is received from the non-primary set serving cell, the DRX timer for the non-primary set serving cell.

9. The terminal of claim 8, wherein the at least one processor is further configured to control applying, if the control message does not include the indicator, the DRX configuration information to the PCell of the second base station.

10. The terminal of claim 8, wherein the at least one processor is further configured to control stopping, if the DRX MAC CE is received from the primary set serving cell, the DRX timer for the primary set serving cell.

11. The terminal of claim 8, wherein the DRX configuration information comprises at least one of an active time timer and a DRX-cycle parameter.

12. A primary base station comprising:

a transceiver configured to communicate with a terminal; and

at least one processor configured to control transmitting, to a terminal, a first control message including secondary serving cell (SCell) configuration information for an SCell and discontinuous reception (DRX) configuration information, the first control message including an indicator indicating that a first base station for the SCell is different from a second base station the PCell,

wherein the controller is further configured to control transmitting a second control message including a DRX media access layer (MAC) control element (CE).

13. The primary base station of claim 12, wherein the DRX configuration information comprises at least one of an active time timer and a DRX-cycle parameter.

14. A non-primary base station comprising:

a transceiver configured to communicate with a terminal; and

at least one processor configured to;

control receiving a secondary serving cell (SCell) add request message from a first base station for a primary serving cell (PCell), and

control transmitting a SCell parameter and discontinuous reception (DRX) configuration information to the first base station,

wherein the DRX configuration information is applied to a SCell of a second base station, if the second base station for the SCell is different from the first base station for the PCell, and

wherein the at least one processor is further configured to control transmitting a control message including a DRX media access layer (MAC) control element (CE).