Interference information processing method and device

• US 9,980,191 B2
• Filed: 10/29/2015
• Issued: 05/22/2018
• Est. Priority Date: 09/27/2010
• Status: Active Grant

• Current Assignee: Datang Mobile Communications Equipment Company Limited (China Information Communication Technology Group Co. Ltd.)
• Original Assignee: China Academy of Telecom Technology (China Information Communication Technology Group Co. Ltd.)
• Inventors: Yan, Nan, Li, Haitao
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): Sharma, Gautam
• Application Number:
  US14/927,419
• Publication Number:
  US 20160050603A1
• Time in Patent Office: 936 Days
• Field of Search: None
• CPC Class Codes: H04W 36/00837 Determination of triggering parameters for hand-off
• CPC Class Codes: H04W 36/20 for optimising the interference level

Abstract

Disclosed are an interference information processing method and device. The method comprises: a user terminal determining completion of reestablishment of an RRC connection; and the user terminal reporting interference indication information to a target cell. In the embodiment of the present invention, after a connection is established between the user terminal and a target cell except a source cell, the target cell may obtain interference indication information of the user terminal through the user terminal or the source cell, so as to avoid in-device interference of the user terminal according to the interference indication information of the user terminal.

Claims

1. A method for processing interference information, comprising:

determining, by a user terminal, completion of cell handover; and

reporting, by the user terminal, interference indication information to a target cell repeatedly, in a case that the user terminal has reported the interference indication information before the cell handover,

wherein the target cell is a cell among cells to which the user terminal is to connect by the reestablishment of the Radio Resource Control RRC connection or is to connect by handover, except a source cell that is currently providing service to the user terminal; and

wherein the interference indication information is information that is used to prevent the user terminal from being switched to interference frequency bands,

wherein the reporting, by the user terminal, the interference indication information to the target cell comprises;

determining, by the user terminal, whether there is a new mutual interference trigger after the cell handover; and

reporting, by the user terminal, the interference indication information repeatedly, if there is not;

or

updating, by the user terminal, the interference indication information according to the new mutual interference trigger, and then reporting the updated information, if there is,

wherein the mutual interference trigger indicates that the reestablishment of the RRC connection is triggered due to mutual interference among a plurality of different wireless access technologies supported by the user terminal.

2. A user terminal, comprising:

a processor;

a memory, connected with the processor via a bus interface, and used to store programs and data used by the processor when performing operations; and

a transceiver, connected with the processor and the memory via the bus interface and used to receive and send data under the control of the processor,

wherein when the processor calls and executes the program and data stored in the memory, the processor is used to;

determine completion of cell handover; and

report interference indication information to a target cell repeatedly, in a case that the user terminal has reported the interference indication information before the cell handover,

wherein the target cell is a cell among cells to which the user terminal is to connect by the reestablishment of the Radio Resource Control RRC connection or is to connect by handover, except a source cell that is currently providing service to the user terminal; and

wherein the interference indication information is information that is used to prevent the user terminal from being switched to interference frequency bands,

wherein the processor is further used to;

determine whether there is a new mutual interference trigger after the cell handover; and

report, the interference indication information repeatedly, if there is not;

or

update the interference indication information according to the new mutual interference trigger, and then reporting the updated information, if there is,

wherein the mutual interference trigger indicates that the reestablishment of the RRC connection is triggered due to mutual interference among a plurality of different wireless access technologies supported by the user terminal.

3. A base station, comprising:

a processor;

a memory, connected with the processor via a bus interface, and used to store programs and data used by the processor when performing operations; and

a transceiver, connected with the processor and the memory via the bus interface and used to receive and send data under the control of the processor,

when the processor calls and executes the program and data stored in the memory, the processor is used to;

determine whether a user terminal is subject to handover;

send interference indication information reported by the user terminal to a target cell during the user terminal is subject to handover,

wherein the target cell is a cell among cells to which the user terminal is to connect by the reestablishment of the Radio Resource Control RRC connection or is to connect by handover, except a source cell that is currently providing service to the user terminal; and

wherein the interference indication information is information that is used to prevent the user terminal from being switched to interference frequency bands,

wherein the processor is further used to;

receive the interference indication information repeatedly if the user terminal determines that there is not a new mutual interference trigger after the cell handover;

or

receive the interference indication information updated by the user terminal according to the new mutual interference trigger if the user terminal determines that there is the new mutual interference trigger after the cell handover;

wherein the mutual interference trigger indicates that the reestablishment of the RRC connection is triggered due to mutual interference among a plurality of different wireless access technologies supported by the user terminal.

4. The base station according to claim 3, wherein the processor is further used to:

send the interference indication information to the target cell by carrying it in a context of the user terminal or a interface message.

5. The base station according to claim 3, wherein the processor is further used to:

send the interference indication information to the target cell through handover preparation message when a source cell determines that the user terminal is subject to handover.