Method for detecting interference user, home base station and user equipment

• US 9,338,729 B2
• Filed: 05/09/2013
• Issued: 05/10/2016
• 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
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Ko, Sithu
• Application Number:
  US13/890,823
• Publication Number:
  US 20130242874A1
• Time in Patent Office: 1,097 Days
• Field of Search: 370/328
• US Class Current: 1/1
• 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 an interference user, wherein the method comprises:

pre-configuring a 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 related information transmitted by the user equipment via a random access procedure, wherein the related information includes 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;

wherein the method further comprises;

configuring the random access preamble for detecting an 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 a 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 the 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 an identification and quality and strength of a signal of an neighboring cell in a 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 the 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 the interference user.

2. The method according claim 1, wherein the identification of the home base station is identification of a closed user group pre-configured for the home base station.

3. 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 a transmission period of the open access signaling.

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

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

a transmitter to broadcast the configured cell type information in the cell;

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

a first processor to determine that the user equipment is an interference user, if the hardware detector determines that the user equipment is not one belonging to the home base station;

a second hardware configurator to configure the random access preamble for detecting an interference user in the home base station;

when the user equipment is in a data connected state, the hardware detector comprises;

a receiver 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 an identification and quality and strength of a signal of an neighboring cell in a 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 the interference user to the user equipment; and

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

5. A non-transitory 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 following:

pre-configuring a 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 related information transmitted by the user equipment via a random access procedure, wherein the related information includes 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;

wherein the computer further to carry out the following;

configuring the random access preamble for detecting an 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 a 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 the 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 an identification and quality and strength of a signal of an neighboring cell in a 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 the 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 the interference user.

6. A non-transitory storage medium in which a computer-readable program is stored, wherein the computer-readable program enables, when executed, the computer to carry out the following:

pre-configuring a 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 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;

wherein the computer further to carry out the following;

configuring the random access preamble for detecting an 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 a 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 the 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 an identification and quality and strength of a signal of an neighboring cell in a 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 the 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 the interference user.

7. A user equipment, comprising:

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

a transmitter to transmit related information to the home base station via a random access procedure, the related information including 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;

the random access preamble for detecting an interference user is configured in the home base station and other base stations covering the home base station, and identification of the home base station within a covering area of other base stations is prestored in the 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 according to the related information transmitted by the user equipment via the 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 an identification and quality and strength of a signal of an neighboring cell in a 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 the 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 the interference user.