In-device coexistence interference report control method and apparatus of network in mobile communication system

• US 8,983,448 B2
• Filed: 02/04/2013
• Issued: 03/17/2015
• Est. Priority Date: 02/06/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jang, Jaehyuk, Kim, Soenghun
• Primary Examiner(s): Hua, Quan M
• Application Number:
  US13/758,132
• Publication Number:
  US 20130203418A1
• Time in Patent Office: 771 Days
• Field of Search: 455418-420, 4554321-4323, 455/436, 455462-464, 455/466, 370328-338
• US Class Current: 455/420
• CPC Class Codes: H04W 36/0016 Hand-off preparation specially adapted for end-to-end data sessions
• CPC Class Codes: H04W 36/0066 of control information between different types of networks in order to establish a new radio link in the target network
• CPC Class Codes: H04W 36/00837 Determination of triggering parameters for hand-off
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 36/20 for optimising the interference level
• CPC Class Codes: H04W 36/38 by fixed network equipment
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• 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: Y02D 30/70 in wireless communication networks

Abstract

An in-device coexistence interference report control method of a network for terminal to inform the network of interference among heterogeneous radio communication modules coexisting in the terminal is provided. The method includes determining, at a terminal when a terminal capability enquiry message is received from a base station, whether the base station supports an In-Device Coexistence (IDC) interference report, transmitting, when the IDC interference report is supported, a terminal capacity information message to the base station, receiving a Radio Resource Control (RRC) connection reconfiguration message including information on whether terminal'"'"'s IDC interference indicator transmission is permitted from the base station; and transmitting an RRC connection reconfiguration complete message to the base station in response to the RRC connection reconfiguration message. The in-device coexistence interference indication control method is advantageous in preventing the UE from transmitting useless in-device coexistence interference indication messages, resulting in reduction of unnecessary signaling.

Claims

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

determining, when a terminal capability enquiry message is received from a base station, whether the base station supports an In-Device Coexistence (IDC) interference report;

transmitting, when the IDC interference report is supported, a terminal capacity information message to the base station;

receiving a Radio Resource Control (RRC) connection reconfiguration message including information on whether terminal'"'"'s IDC interference indicator transmission is permitted from the base station; and

transmitting an RRC connection reconfiguration complete message to the base station in response to the RRC connection reconfiguration message.

2. The method of claim 1, further comprising:

determining whether IDC interference occurs in the terminal; and

transmitting, when the IDC interference occurs, an IDC interference indicator to the base station.

3. The method of claim 1, further comprising:

receiving a handover command from the base station,

wherein the handover command includes an indicator indicating whether a target network permits the IDC interference indicator transmission.

4. The method of claim 1, wherein the IDC interference indicator is an in DeviceCoexInd parameter.

5. The method of claim 1, wherein the RRC connection reconfiguration message comprises information on a frequency to which the IDC interference indicator is applied.

6. A method for a base station to control terminal'"'"'s control message transmission in a mobile communication system, the method comprising:

transmitting a terminal capability enquiry message to the terminal to determine terminal capability;

determining, when a terminal capability information message is received from the terminal, whether the terminal capability information message includes an In-Device Coexistence (IDC) interference report capability indicator;

determining, when the IDC interference report capability indicator is included, whether to permit the IDC interference indicator transmission; and

transmitting, when the IDC interference indicator transmission is permitted, to the terminal a Radio Resource Control (RRC) connection reconfiguration message including information on whether the IDC interference indicator transmission is permitted.

7. The method of claim 6, further comprising:

determining whether a handover of the terminal is required; and

transmitting, if the handover of the terminal is required, to a target base station a handover request message including information on IDC interference indicator transmission capability of the terminal.

8. The method of claim 7, further comprising:

receiving a handover response message including information on whether the target base station supports the IDC interference indicator transmission from the target base station; and

when the target base station supports the IDC interference indicator transmission, transmitting a handover command message including an IDC interference indicator transmission indicator to the terminal.

9. The method of claim 6, wherein the IDC interference indicator is an in DeviceCoexInd parameter.

10. The method of claim 6, wherein the RRC connection reconfiguration message comprises information on a frequency to which the IDC interference indicator.

11. A terminal for transmitting a control message in a mobile communication system, the terminal comprising:

a transceiver for communicating with a base station; and

a controller for controlling determining, when a terminal capability enquiry message is received from a base station, whether the base station supports an In-Device Coexistence (IDC) interference report, transmitting, when the IDC interference report is supported, a terminal capacity information message to the base station, receiving a Radio Resource Control (RRC) connection reconfiguration message including information on whether terminal'"'"'s IDC interference indicator transmission is permitted from the base station, and transmitting an RRC connection reconfiguration complete message to the base station in response to the RRC connection reconfiguration message.

12. The terminal of claim 11, wherein the controller controls determining whether IDC interference occurs in the terminal and transmitting, when the IDC interference occurs, an IDC interference indicator to the base station.

13. The terminal of claim 11, wherein the controller controls receiving a handover command from the base station, the handover command including an indicator indicating whether a target network permits the IDC interference indicator transmission.

14. The terminal of claim 11, wherein the IDC interference indicator is an in DeviceCoexInd parameter.

15. The terminal of claim 11, wherein the RRC connection reconfiguration message comprises information on a frequency to which the IDC interference indicator is applied.

16. A base station for controlling control message transmission of a terminal in a mobile communication system, the base station comprising:

a transceiver for communicating with a terminal and other nodes of wireless communication systems; and

a controller for controlling transmitting a terminal capability enquiry message to the terminal to determine terminal capability, determining, when a terminal capability information message is received from the terminal, whether the terminal capability information message includes an In-Device Coexistence (IDC) interference report capability indicator, determining, when the IDC interference report capability indicator is included, whether to permit an IDC interference indicator transmission, and transmitting, when the IDC interference indicator transmission is permitted, to the terminal a Radio Resource Control (RRC) connection reconfiguration message including information on whether the IDC interference indicator transmission is permitted.

17. The base station of claim 16, wherein the controller controls determining whether a handover of the terminal is required and transmitting, if the handover of the terminal is required, to a target base station a handover request message including information on IDC interference indicator transmission capability of the terminal.

18. The base station of claim 16, wherein the controller controls receiving a handover response message including information on whether the target base station supports the IDC interference indicator transmission from the target base station and transmitting, when the target base station supports the IDC interference indicator transmission, to the terminal a handover command message including an IDC interference indicator transmission indicator.

19. The base station of claim 16, wherein the IDC interference indicator is an in DeviceCoexInd parameter.

20. The base station of claim 16, wherein the RRC connection reconfiguration message comprises information on a frequency to which the IDC interference indicator.