CONTROL METHOD FOR SUPPORTING MULTIPLE CONNECTIONS IN MOBILE COMMUNICATION SYSTEM AND APPARATUS FOR SUPPORTING MULTIPLE CONNECTIONS

• US 20170164419A1
• Filed: 02/20/2017
• Published: 06/08/2017
• Est. Priority Date: 07/04/2013
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Jae Heung
• Granted Patent: US 10,009,952 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04W 36/0009 for a plurality of users or terminals, e.g. group communication or moving wireless networks user group management H04W4/08; processing of subscriber group data H04W8/186
• CPC Class Codes: H04W 36/0069 in case of dual connectivity, e.g. decoupled uplink/downlink
• CPC Class Codes: H04W 36/0083 Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
• CPC Class Codes: H04W 36/04 Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 36/28 involving a plurality of connections, e.g. multi-call or multi-bearer connections
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• 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 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points
• CPC Class Codes: H05K 999/99 dummy group

Abstract

Disclosed are a control method for supporting multiple connections in a mobile communication system and an apparatus for supporting multiple connections. In the method for supporting the multiple connections to be performed in first and second base stations, a first base station receives the measured results for multiple connections from a terminal, determines whether the plurality of connections are set on the basis of the measured results, transmits the information for setting the multiple connections to the second base station when setting the multiple results, and the second base station generates the control information for setting the multiple connections of the terminal on the basis of the information for setting the multiple connections received from the first base station. Thus, the multiple connections can be easily supported and the performance of the mobile communication system can be improved therethrough.

Claims

1. A method for processing a radio link failure (RLF) in a terminal supporting a multiple connectivity using two or more base station, the method comprising:

detecting a RLF between the terminal and a second base station; and

reporting the RLF to a first base station,

wherein the multiple connectivity is a dual connectivity in which the first base station is a primary base station, and the second base station is a secondary base station.

2. The method according to claim 1, wherein the RLF is reported to the first base station via Radio Resource Control (RRC) signaling.

3. A method for processing a radio link failure (RLF) in a terminal supporting a multiple connectivity using two or more base station, the method comprising:

detecting a RLF between the terminal and a second base station; and

reporting the RLF to a first base station,

wherein, when the second base station serves the terminal through a plurality of cells, the RLF is a RLF occurred in a primary cell among the plurality of cells.

4. The method according to claim 3, wherein the RLF is reported to the first base station via Radio Resource Control (RRC) signaling.

5. A method for processing a radio link failure (RLF) in a terminal supporting a multiple connectivity using two or more base station, the method comprising:

detecting a RLF between the terminal and a second base station; and

reporting the RLF to a first base station,

wherein the RLF includes at least one of a physical layer error between the terminal and the second base station, and a failure of a random access procedure performed between the terminal and the second base station.

6. The method according to claim 5, wherein the RLF is reported to the first base station via Radio Resource Control (RRC) signaling.