METHOD FOR DETECTING INTERFERENCE USER, HOME BASE STATION AND USER EQUIPMENT

• US 20130242874A1
• Filed: 05/09/2013
• Published: 09/19/2013
• Est. Priority Date: 11/09/2010
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: LI, Hongchao, ZHANG, Yi, ZHANG, Yuantao, ZHOU, Hua, WU, Jianming
• Granted Patent: US 9,338,729 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

Detecting interference user and home base station including: pre-configuring the cell type information of a home base station as an open cell type, and broadcasting the cell type information by the home base station in the cell; determining whether user equipment is one belonging to the home base station by the home base station according to the related information transmitted by the user equipment via a random access procedure, wherein the related information includes user information or a random access preamble; and determining by the home base station that the user equipment is an interference user, if the user equipment is not one belonging to the home base station.

Claims

1. A method for detecting interference user, wherein the method comprises:

pre-configuring the cell type information of a home base station as an open cell type, and broadcasting the cell type information by the home base station in the cell;

determining whether user equipment is one belonging to the home base station by the home base station according to the related information transmitted by the user equipment via a random access procedure, wherein the related information includes user information or a random access preamble; and

determining by the home base station that the user equipment is an interference user, if the user equipment is not one belonging to the home base station.

2. The method according claim 1, wherein the determining whether user equipment is one belonging to the home base station by the home base station according to the related information transmitted by the user equipment via a random access procedure comprises:

acquiring user information of the user equipment by the home base station according to a message transmitted by the user equipment during the random access procedure, wherein the user information includes identification information of the user; and

determining that the user equipment is not one belonging to the home base station, if the user identification information does not belong to the identification information in a user list that is allowed by the home base station to be accessed.

3. The method according claim 1, wherein the method further comprises:

configuring a random access preamble for detecting interference user in the home base station and other base stations covering the home base station, and prestoring in the other base stations identification of the home base station within the covering area of other base stations;

and when the user equipment is in a data connected state, the determining whether the user equipment is one belonging to the home base station by the home base station according to the related information transmitted by the user equipment via a random access procedure comprises;

receiving by the home base station the random access preamble transmitted by the user equipment, the random access preamble being that allocated to the user equipment by a base station to which the user equipment belongs according to the identification and quality and strength of the signal of an neighboring cell in the measurement report transmitted by the user equipment;

wherein when the identification of the neighboring cell is the identification of the home base station and the quality and strength of the signal are the best, the base station to which the user equipment belongs allocates a pre-configured random access preamble for detecting interference user to the user equipment; and

determining that the user equipment is not one belonging to the home base station, if the random access preamble is the random access preamble for detecting interference user.

4. The method according claim 3, wherein the identification of the home base station is identification of a closed user group pre-configured for the home base station.

5. The method according to claim 1, wherein the broadcasting the cell type information by the home base station in the cell comprises:

transmitting the cell type information by the home base station via open access signaling;

wherein the home base station semi-statically configures the transmission period of the open access signaling.

9. A computer-readable medium comprising a program, wherein when the program is executed in a home base station, the program enables the computer to carry out the method of claim 1.

10. A storage medium in which a computer-readable program is stored, wherein the computer-readable program enables, when executed, the computer to carry out the method of claim 1.

6. A home base station, wherein the home base station comprises:

a first configuring unit to pre-configure the cell type information of the home base station as an open cell type;

an information broadcasting unit to broadcast the configured cell type information in the cell;

a detecting unit to determine whether the user equipment is one belonging to the home base station according to the related information transmitted by the user equipment via a random access procedure, wherein the related information includes user information or a random access preamble; and

an interference determining unit to determine that the user equipment is an interference user, if the detecting unit determines that the user equipment is not one belonging to the home base station.

7. The home base station according to claim 6, wherein the detecting unit comprises:

a user information acquiring unit to acquire user information of the user equipment according to a message transmitted by the user equipment during the random access procedure, wherein the user information includes identification information of the user; and

a first user determining unit to determine that the user equipment is not one belonging to the home base station, if the user identification information acquired by the user information acquiring unit does not belong to the identification information in a user list that is allowed by the home base station to be accessed.

8. The home base station according to claim 6, wherein the home base station further comprises:

a second configuring unit to configure a random access preamble for detecting interference user in the home base station;

when the user equipment is in a data connected state, the detecting unit comprises;

a receiving unit to receive the random access preamble transmitted by the user equipment, the random access preamble being that allocated to the user equipment by a base station to which the user equipment belongs according to the identification and quality and strength of the signal of an neighboring cell in the measurement report sent by the user equipment;

wherein when the identification of the neighboring cell is the identification of the home base station and the quality and strength of the signal are the best, the base station to which the user equipment belongs allocates a pre-configured random access preamble for detecting interference user to the user equipment; and

a second user determining unit to determine that the user equipment is not one belonging to the home base station, if the random access preamble received by the receiving unit is the random access preamble for detecting interference user.

11. User equipment, comprising:

a receiving unit to receive configured cell type information broadcasted from a home base station to a cell; and

a transmitting unit to transmit related information to the home base station via a random access procedure, the related information including user information or a random access preamble;

wherein the home base station determines whether the user equipment is one belonging to the home base station according to the related information, and determines that the user equipment is an interference user, if it is determined that the user equipment is not one belonging to the home base station.