Apparatus and method for measuring home cell/private network cell in mobile communication system

• US 8,339,981 B2
• Filed: 08/07/2008
• Issued: 12/25/2012
• Est. Priority Date: 08/07/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jeong, Kyeong-In, Kim, Soeng-Hun
• Primary Examiner(s): Thier, Michael
• Assistant Examiner(s): LOUIS, VINNCELAS
• Application Number:
  US12/672,639
• Publication Number:
  US 20110194424A1
• Time in Patent Office: 1,601 Days
• Field of Search: 370/252, 370/312, 370328-335, 370/338, 455/67, 455423-561
• US Class Current: 370/252
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

Disclosed is a method of measurement on a home cell/private network cell, by a user equipment (UE), in a mobile communication system, the method including the steps of: transmitting a request message requesting the measurement to a network node, the request message including an indicator instructing at least one of register, join, and use of the home cell/private network cell; receiving a response message corresponding to the request message from the network node, the response message including context information for measurement control of at least one home cell/private network cell accessible by the UE; and selectively executing measurement on the accessible home cell/private network cell by using the context information.

Claims

1. A method of measurement on a home cell/private network cell, by a user equipment (UE), in a mobile communication system, the method comprising the steps of:

transmitting a request message requesting the measurement to a network node, the request message comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell;

receiving a response message corresponding to the request message from the network node, the response message comprising context information for measurement control of at least one home cell/private network cell accessible by the UE; and

selectively executing measurement on the accessible home cell/private network cell by using the context information,

wherein the context information comprises identification information of the accessible home cell/private network cell, information on a public/macro cell locally overlapping with the accessible home cell/private network cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

2. The method as claimed in claim 1, wherein the step of selectively executing the measurement comprises the steps of:

when the public/macro cell is detected by using the information on the public/macro cell, determining if a channel condition of the public/macro cell is better than a first channel condition threshold, based on a result of measurement on the public/macro cell;

omitting execution of measurement on the accessible home cell/private network cell when the channel condition of the public/macro cell is worse than the first channel condition threshold;

determining if the channel condition of the public/macro cell is better than a second channel condition threshold when the channel condition of the public/macro cell is better than the first channel condition threshold;

executing measurement on the accessible home cell/private network cell with a first measurement execution period when the channel condition of the public/macro cell is worse than the second channel condition threshold; and

executing measurement on the accessible home cell/private network cell with a second measurement execution period when the channel condition of the public/macro cell is better than the second channel condition threshold.

3. A method of measurement on a home cell/private network cell, by a network node, in a mobile communication system, the method comprising the steps of:

receiving a request message requesting the measurement from a UE, the request message comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell;

obtaining context information for measurement control of at least one home cell/private network cell accessible by the UE from a higher node in accordance with the request message; and

transmitting a response message comprising the context information to the UE,

wherein the context information comprises identification information of the accessible home cell/private network cell, information on a public/macro cell locally overlapping with the accessible home cell/private network cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

4. A UE executing measurement on a home cell/private network cell comprises:

a transceiver for transmitting a request message requesting the measurement to a network node, the request message comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell, and receiving a response message in accordance with the request message, the response message comprising context information for measurement control of at least one home cell/private network cell accessible by the UE; and

a controlling unit for generating the request message and selectively executing measurement on the accessible home cell/private network cell by using the context information,

wherein the context information comprises identification information of the accessible home cell/private network cell, information on a public/macro cell locally overlapping with the accessible home cell/private network cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

5. The UE as claimed in claim 4, wherein the controlling unit executes measurement on the public/macro cell if the public/macro cell is detected by using information of the public/macro cell, and then as a result of the measurement, determines if a channel condition of the public/macro cell is better than a first channel condition threshold;

omits execution of measurement on the accessible home cell/private network cell when the channel condition of the public/macro cell is worse than the first channel condition threshold;

determines if the channel condition of the public/macro cell is better than a second channel condition threshold when the channel condition of the public/macro cell is better than the first channel condition threshold;

executes measurement on the accessible home cell/private network cell with a first measurement execution period when the channel condition of the public/macro cell is worse than the second channel condition threshold; and

executes measurement on the accessible home cell/private network cell with a second measurement execution period when the channel condition of the public/macro cell is better than the second channel condition threshold.

6. A network node executing measurement on a home cell/private network cell comprises:

a controlling unit for;

obtaining context information on at least one home cell/private network cell accessible by a UE from a higher node, in accordance with a request message from the UE, the request message requesting the measurement and comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell; and

generating a response message comprising context information for measurement on the accessible home cell/private network cell; and

a transceiver for receiving the request message and transmitting the generated response message,

wherein the context information comprises identification information of the accessible home cell/private network cell, information on a public/macro cell locally overlapping with the accessible home cell/private network cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

7. A method of measurement on a home cell/private network cell, by a UE, in a mobile communication system, the method comprising the steps of:

transmitting a request message requesting the measurement to a network node, the request message comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell;

receiving a control message instructing measurement on at least one home cell/private network cell accessible by the UE from the network node that has received context information for measurement control of the accessible home cell/private network cell from a higher node; and

executing measurement on the accessible home cell/private network cell in accordance with the control message,

wherein the context information comprises identification information of the accessible home cell/private network cell, information on a public/macro cell locally overlapping with the accessible home cell/private network cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

8. The method as claimed in claim 7, wherein the control message comprises at least one of information items, which comprise information on the accessible home cell/private network cell or at least one home cell/private network cell on which measurement is expected to be changed or stopped, information on a measurement gap, and information on a measurement report method of the accessible home cell/private network cell.

9. The method as claimed in claim 8 further comprises, after executing the measurement, the step of transmitting a measurement report message comprising a execution result of the measurement in accordance with the measurement report method to the network node.

10. A method of measurement on a home cell/private network cell, by a network node, in a mobile communication system, the method comprising the steps of:

receiving a request message requesting the measurement from a UE, the request message comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell;

obtaining context information for measurement control of at least one home cell/private network cell accessible by the UE, from a higher node; and

transmitting a control message instructing measurement on the accessible home cell/private network cell to the UE when a public/macro cell is a serving cell of the UE or neighboring cells of the serving cell based on information of the public/macro cell locally overlapping with the accessible home cell/private network cell, the information of the public/macro cell being included in the context information; and

receiving a measurement report message comprising a execution result of the instructed measurement from the UE,

wherein the context information comprises identification information of the accessible home cell/private network cell, information on the public/macro cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

11. The method as claimed in claim 10, wherein he control message comprises at least one of information items, which comprise information on the accessible home cell/private network cell or at least one home cell/private network cell on which measurement is expected to be changed or stopped, information on a measurement gap, and information on a measurement report method of the accessible home cell/private network cell.

12. A UE executing measurement on a home cell/private network cell comprises:

a transceiver for transmitting a request message requesting the measurement to a network node, the request message comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell, and receiving a control message instructing measurement on at least one home cell/private network cell accessible by the UE from the network node that has received context information for measurement control of the accessible home cell/private network cell from a higher node; and

a controlling unit for generating a first message and executing measurement on the accessible home cell/private network cell in accordance with the control message;

wherein the context information comprises identification information of the accessible home cell/private network cell, information on a public/macro cell locally overlapping with the accessible home cell/private network cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

13. The UE as claimed in claim 12, wherein the control message comprises at least one of information items, which comprise information on the accessible home cell/private network cell or at least one home cell/private network cell on which measurement is expected to be changed or stopped, information on a measurement gap, and information on a measurement report method of the accessible home cell/private network cell.

14. The UE as claimed in claim 13, wherein, after execution of the measurement, the controlling unit controls transmission of a measurement report message comprising a execution result of the measurement to the network node in accordance with the measurement report method.

15. A network node executing measurement on a home cell/private network cell, the network node comprising:

a controlling unit for obtaining context information for measurement control on at least one home cell/private network cell accessible by a UE from a higher node, in accordance with a request message from the UE, the request message requesting the measurement and comprising an indicator instructing at least one of register, join, and use of the home cell/private network cell; and

generating a control message instructing measurement on the accessible home cell/private network cell when a public/macro cell is a serving cell of the UE or neighboring cells of the serving cell based on information of the public/macro cell locally overlapping with the accessible home cell/private network cell, the information of the public/macro cell being included in the context information; and

a transceiver for receiving the request message requesting the measurement and transmitting and receiving the generated control message,

wherein the context information comprises identification information of the accessible home cell/private network cell, information on the public/macro cell, at least one measurement execution period on the accessible home cell/private network cell, at least one channel condition threshold for determining the measurement execution period, and network node information controlling the accessible home cell/private network cell.

16. The network node as claimed in claim 15, wherein the control message comprises at least one of information items, which comprise information on the accessible home cell/private network cell or at least one home cell/private network cell on which measurement is expected to be changed or stopped, information on a measurement gap, and information on a measurement report method of the accessible home cell/private network cell.