Method for determining radio resource control configuration in a wireless communication system supporting dual connectivity and apparatus thereof

• US 10,104,585 B2
• Filed: 07/11/2017
• Issued: 10/16/2018
• Est. Priority Date: 09/30/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Kyungmin, Xu, Jian, Byun, Daewook
• Primary Examiner(s): Nguyen, Khai M
• Application Number:
  US15/646,723
• Publication Number:
  US 20170318505A1
• Time in Patent Office: 462 Days
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/0069 in case of dual connectivity, e.g. decoupled uplink/downlink
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 92/20 between access points

Abstract

A method for determining a radio resource control (RRC) configuration in a wireless communication system supporting dual connectivity, and an apparatus supporting the same is disclosed. The method for determining, by a base station (BS), a radio resource control (RRC) configuration in a wireless communication system supporting dual connectivity, includes transmitting, by a first BS, a first RRC configuration of a serving cell of the first BS or remained user equipment (UE) capability to a second BS configured in a UE, and receiving, by the first BS, a second RRC configuration of a serving cell of the second BS configured in the UE from the second BS. The first BS and the second BS are involved in dual connectivity for the UE, and the second RRC configuration is determined by the second BS based on the first RRC configuration or the remained UE capability.

Claims

1. A method for determining, a radio resource control (RRC) configuration in a wireless communication system supporting dual connectivity, the method comprising:

transmitting a first message to a secondary eNB (SeNB), the first message including a first RRC configuration of a serving cell of the MeNB; and

receiving a second message in response to the first message from the SeNB, the second message including a second RRC configuration of a serving cell of the SeNB,

wherein the MeNB and the SeNB are involved in dual connectivity for a user equipment (UE), and the SeNB determines the second RRC configuration based on the first RRC configuration and a UE capability of the UE.

2. The method of claim 1, further comprising transmitting RRC Connection Reconfiguration message to the UE when the MeNB endorses the second RRC configuration.

3. The method of claim 1, the first message further includes an identifier allocated at the MeNB to identify the UE and a bearer context of the bearer requested to be added.

4. The method of claim 3, the second message further includes an identifier allocated at the MeNB to identify the UE, an identifier allocated at the SeNB to identify the UE and a bearer context of a bearer admitted to be added.

5. The method of claim 1, the first message further includes an identifier allocated at the MeNB to identify the UE, an identifier allocated at the SeNB to identify the UE and a bearer context of the bearer requested to be modified.

6. The method of claim 5, the second message further includes an identifier allocated at the MeNB to identify the UE, an identifier allocated at the SeNB to identify the UE, a bearer context of a bearer admitted to be modified.

7. The method according to claim 1, wherein the second RRC configuration is determined such that a combination of the first RRC configuration and the second RRC configuration do not to exceed the UE capability.

8. A method for determining, a radio resource control (RRC) configuration in a wireless communication system supporting dual connectivity, the method comprising:

receiving a first message from a master eNB (MeNB), the first message including a first RRC configuration of a serving cell of the MeNB; and

transmitting a second message in response to the first message to the MeNB, the second message including a second RRC configuration of a serving cell of the SeNB,

wherein the MeNB and the SeNB are involved in dual connectivity for a user equipment (UE), and the SeNB determines the second RRC configuration based on the first RRC configuration and a UE capability of the UE.