Apparatus and method of transmitting/receiving signals in mobile communication system supporting carries

• US 10,172,181 B2
• Filed: 05/14/2015
• Issued: 01/01/2019
• Est. Priority Date: 05/16/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Soenghun, Kim, Sangbum, Jang, Jaehyuk, Jeong, Kyeongin
• Primary Examiner(s): Krueger, Kent K
• Application Number:
  US14/712,231
• Publication Number:
  US 20150334769A1
• Time in Patent Office: 1,328 Days
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 1/1835 Buffer management
• CPC Class Codes: H04L 1/1848 Time-out mechanisms
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• 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 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 16/32 Hierarchical cell structures
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 36/0069 in case of dual connectivity, e.g. decoupled uplink/downlink
• CPC Class Codes: H04W 36/36 by user or terminal equipment
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The disclosure relates to methods and systems for converging a 5th-Generation (5G) communication system with technology for Internet of Things (IoT). The disclosure is applicable to intelligent services based on 5G communication and IoT-related technologies. A method for configuring a connection by a terminal is provided, which includes receiving a radio resource control (RRC) message from a base station, determining whether semi-persistent scheduling (SPS) and transmission time interval (TTI) bundling are configured based on the RRC message, determining whether dual connectivity is configured, if the SPS and the TTI bundling are configured, determining whether the TTI bundling is configured for master cell group (MCG) and the SPS is configured for secondary cell group (SCG), if the dual connectivity is configured, and configuring an RRC connection based on the RRC message, if the TTI bundling is configured for the MCG and the SPS is configured for the SCG.

Claims

1. A method for configuring a connection by a terminal, the method comprising:

receiving a radio resource control (RRC) message from a base station;

determining that semi-persistent scheduling (SPS) and transmission time interval (TTI) bundling are simultaneously to be configured based on the RRC message;

when the SPS and the TTI bundling are simultaneously to be configured, determining that dual connectivity is to be configured;

when the dual connectivity is to be configured, determining that the TTI bundling is to be configured for a primary serving cell (PCell) of a master cell group (MCG) and the SPS is to be configured for a primary secondary serving cell (PSCell) of a secondary cell group (SCG); and

when the TTI bundling is to be configured for the PCell of the MCG and the SPS is to be configured for the PSCell of the SCG, configuring an RRC connection based on the RRC message.

2. The method of claim 1, wherein the RRC message comprises an RRCConnectionReconfiguration message.

3. The method of claim 1, further comprising:

when at least one of the SPS or the TTI bundling is not to be configured, configuring the RRC connection based on the RRC message.

4. The method of claim 1, further comprising:

when the SPS and the TTI bundling are simultaneously to be configured, determining whether a number of configured uplinks in the MCG is one; and

when the number of configured uplinks in the MCG is more than one, ignoring the RRC message and initiating an RRC connection reestablishment procedure.

5. The method of claim 1, further comprising:

when the dual connectivity is not to be configured, ignoring the RRC message and initiating an RRC connection reestablishment procedure.

6. A terminal for configuring a connection, the terminal comprising:

a transceiver configured to at least one of transmit or receive a signal; and

a controller coupled with the transceiver and configured to;

receive a radio resource control (RRC) message from a base station,

determine whether semi-persistent scheduling (SPS) and transmission time interval (TTI) bundling are simultaneously to be configured based on the RRC message,

if the SPS and the TTI bundling are simultaneously to be configured, determine whether dual connectivity is to be configured,

if the dual connectivity is to be configured, determine whether the TTI bundling is to be configured for a primary serving cell (PCell) of a master cell group (MCG) and the SPS is to be configured for a primary secondary serving cell (PSCell) of a secondary cell group (SCG), and

if the TTI bundling is to be configured for the PCell of the MCG and the SPS is to be configured for the PSCell of the SCG, configure an RRC connection based on the RRC message.

7. The terminal of claim 6, wherein the RRC message comprises an RRCConnectionReconfiguration message.

8. The terminal of claim 6, wherein the controller is further configured to:

if at least one of the SPS or the TTI bundling is not to be configured, configure the RRC connection based on the RRC message.

9. The terminal of claim 6, wherein the controller is further configured to:

if the SPS and the TTI bundling are simultaneously to be configured, determine whether a number of configured uplinks in the MCG is one, and

if the number of configured uplinks in the MCG is more than one, ignore the RRC message and initiate an RRC connection reestablishment procedure.

10. The terminal of claim 6, wherein the controller is further configured to:

if the dual connectivity is not to be configured, ignore the RRC message and initiate an RRC connection reestablishment procedure.

11. A method for configuring a connection by a base station, the method comprising:

determining that transmission time interval (TTI) bundling is to be configured for a terminal on a primary serving cell (PCell) of a master cell group (MCG);

determining that semi persistent scheduling (SPS) is to be configured for the terminal;

when the TTI bundling is to be configured for the terminal and the SPS is to be configured for the terminal, determining that the SPS is to be configured on the PCell of the MCG or a primary secondary serving cell (PSCell) of a secondary cell group (SCG);

when the SPS is to be configured on the PSCell of the SCG, generating a radio resource control (RRC) message indicating configuration of the TTI bundling on the PCell of the MCG; and

transmitting the RRC message to the terminal.

12. The method of claim 11, wherein the determining that the TTI bundling is to be configured for the terminal on the PCell comprises:

determining whether the TTI bundling is to be configured for the terminal on the PCell based on at least one of a channel status of the terminal or an available transmission power of the terminal.

13. The method of claim 11, wherein, when the SPS is to be configured on the PCell, the TTI bundling is not to be configured on the PCell.

14. A base station for configuring a connection, the base station comprising:

a transceiver configured to at least one of transmit or receive a signal; and

a controller coupled with the transceiver and configured to;

determine whether transmission time interval (TTI) bundling for a terminal is to be configured on a primary serving cell (PCell) of a master cell group (MCG),

determine whether semi persistent scheduling (SPS) is to be configured for the terminal,

if the TTI bundling is to be configured for the terminal and the SPS is to be configured for the terminal, determine whether the SPS is to be configured on the PCell of the MCG or a primary secondary serving cell (PSCell) of a secondary cell group (SCG),

if the SPS is to be configured on the PSCell of the SCG, generate a radio resource control (RRC) message indicating configuration of the TTI bundling on the PCell of the MCG, and

control to transmit the RRC message to the terminal.

15. The base station of claim 14, wherein the controller is further configured to determine whether the TTI bundling is to be configured for the terminal on the PCell based on at least one of a channel status of the terminal or an available transmission power of the terminal.

16. The base station of claim 14, wherein, if the SPS is to be configured on the PCell, the TTI bundling is not to be configured on the PCell.